Water and air control valve for water sprayers

FIELD: machine building.

SUBSTANCE: invention relates to water and air feed valves for water sprayers intended for example for making at artificial snow. Valve (1) comprises body (2) with two independent paths (C1, C2) for air and water circulation. Each of said paths (C1, C2) comprises: chamber (5, 15) with slide valve (6, 16), fluid inlet channel (7, 17), fluid discharge channel (8, 18) and channel (9, 19) to discharge fluid from said outlet channel (8, 18). Valve incorporates control means for driving said slide valves (6, 16) to open position for fluid flow whereat said emptying channel (9, 19) is shutoff and to closed position for shutting-off of fluid flow whereat said channel (9, 19) is open. Said control means incorporates common drive (25) for control over said slide valves (6, 16) and structure (26) for mechanical connection of said valves (6, 16) to allow simultaneous control there over inside their appropriate chamber (5, 15). Invention covers also the method of application of above described valve.

EFFECT: higher reliability.

24 cl, 11 dwg

 

The invention relates to a valve for the distribution of water and air used in spraying water under pressure, in particular, for the production of artificial snow.

Modern installation of artificial snow cover include numerous technological advances that have allowed to increase their efficiency and productivity through better use of climate conditions.

In particular, it relates to spraying devices, which are equipped with these facilities for artificial snow production and which can operate at different flow rates of water and air, to make best use of climatic conditions.

Usually this regulation consumption values perform using valves designed for distribution of water and air, which will equip the supply circuits connected to these devices spray.

A valve of this type is widely used in snowmaking installations described, for example, in document FR 2573854.

This valve is a spool distribution device that is connected to the supply pipe of the water and air in the installation. A single cylindrical slide valve is moved by sliding inside the camera, made in the valve body to control flow in the s, air and for discharging.

Despite its appeal and effectiveness, this valve still has a drawback, as it contains only one drain, performed on the circuit at the output of the gate. Water that may be present in the circuit, when severe frosts may lead to freezing of the spraying device located at the outlet; another disadvantage is the possibility of water ingress into the air in case of failure of gaskets, because the channel is common to both paths.

Also known universal valves made with the possibility distribution of water and, if necessary, air installations spraying water under pressure.

Such valves are described, for example, in document FR 2795494, in practice, are efficient and flexible to use; however, they are relatively bulky, when they unite, and require independent control of water and air circuits, which appears to be rather complicated.

In addition, this leads to an increase in the number of management tools and associated equipment, in particular hydraulic and electric connections, with all the ensuing economic consequences.

In addition, with the increasing size of networks snowmaking new challenges:

air - contour seats can delay the tested significant amounts of water; this water may be the main reason for the formation of ice in the snow guns,

- water circuit may also contain air, which may introduce distortion in the adjustment of the valves.

None of the above two systems do not effectively address the problems associated with the blowing of the edges, i.e. with clean input circuits when the valve is opened, and the problems associated with the removal of the fluid contained in the output circuit, when closing the valve.

The task of the invention to provide a valve for the distribution of water and air, having a compact and economical construction and at the same time providing effective control of the output flow of fluid. This valve also provides emptying both circuit and preferably also allows the blowing paths (in particular, the air path).

The problem is solved in the valve containing, according to the invention, on the one hand, the housing is equipped with two independent circuits for the circulation of fluid, one for air and one for water, these paths contain each: (i) a chamber in which is installed a valve in the form of a spool, (ii) the entry channel of the fluid, the setting specified in the housing through the inlet and connected with this chamber through the outlet, (iii) the anal to exit the fluid, connected with this chamber through the inlet and out from the housing through the outlet, and (iv) channel which is connected with the specified output channel or made with the possibility of establishing a message with the latter, equipped with inlet and out (preferably at the lower end of the respective chamber through the outlet, in particular, to ensure the removal of the fluid contained in the specified output channel

and, on the other hand, means to control these valves are located and guided in their respective chamber, each, between:

- open position in which the specified input channel is communicated with the specified output channel through the checkpoint area specified camera and wherein said channel emptying blocked, and

- closed position in which the specified checkpoint area (and preferably the outlet of the input channel and/or entrance aperture of the output channel) blocked specified by the corresponding valve, and in which the channel emptying opened,

these controls include:

a single actuator to control these valves, and

- design, providing a mechanical connection between the two valves to allow simultaneous management of these about is their valves within their respective chambers.

According to the private variant implementation, the actuator cooperates with one of the valves, and connecting structure mechanically connects the upper end of both valves to ensure their simultaneous control.

According to another distinctive feature, the valve is structurally designed so that the valves can be controlled in the configuration in which the valve air path is in its open position, while valve water circuit is in its closed position.

He also made constructively so that the transfer valve to the open position is possible to adjust the flow rate and to control the pressure, at least one of the fluid.

According to another distinctive feature, the valve in accordance with the present invention contains the channel on its air path and/or channel on their water circuit made(e) opportunity to interact with the valve of the corresponding circuit for the implementation of the blowdown water to air or air to water, depending on the case, in the input pipeline before opening the specified air and/or water paths.

According to another distinctive feature, the channel discharge air path is made in the valve body outside dimensions of the corresponding camera is so to its inlet connected with the outlet channel of the specified air path and that the outlet was at the lower end of the specified chamber; and valve specified air path configured to transfer control means in an intermediate position between the closed and open positions, in which, on the one hand, the specified input channel communicates with the outlet channel through the checkpoint area corresponding to the camera and, on the other hand, the channel emptying is open, in particular, to ensure the active operation of the purge air path while opening the specified air path.

According to another distinctive feature, the output channel of the air path includes a portion in the form of a labyrinth, containing the camera of two parts, input and output, divided by a transverse partition, equipped with a through hole, is shifted upward relative to the inlet of the specified input part, with the specified output part of the chamber continued in the upper part of the outlet air path and contains in the lower part of the inlet channel purge/evacuation.

The implementation of this output channel of the air path in the maze allows you to separate contained in the air condensates.

In addition, the channel emptying leading the CSO circuit is preferably in the valve specified water circuit at the level of its lower end, when the specified channel emptying contains the outlet opening opposite the lower end of the respective chamber, and an inlet opening that communicates with the passage area of the fluid specified camera, with the specified channel emptying opened or closed depending on the position of the specified valve with tube, made on the level of the lower end of the specified camera.

Preferably, the water circuit, the outlet channel is located under the inlet of the output channel; on the other hand, for the air path, the outlet channel is located above the inlet of the output channel.

The object of the present invention is also a method of using at least one control valve for the distribution of water and air in installations spraying water under pressure, for example, for the production of artificial snow, with the specified valve or these valves contain each:

on the one hand building, with these independent circuits, each of which is designed to circulate a fluid medium, one for air and one for water, these paths contain, each, (i) a chamber in which is installed a valve in the form of a spool, (ii) the entry channel of the fluid entering the specified enclosure through the inlet hole is involved and connected with this chamber through the outlet, (iii) the output channel for the fluid connected with this chamber through the inlet and out from the housing through the outlet, and (iv) channel for emptying which is connected with the specified output channel or made with the possibility of establishing a message with the latter, equipped with inlet and out through the outlet, in particular, to ensure the removal of the fluid contained in the specified output channel

and, on the other hand, means to control these valves are located and guided in their respective chamber, each, between:

- open position in which the specified input channel is communicated with the specified output channel through the checkpoint area specified camera, and wherein said channel emptying blocked, and

- closed position in which the specified checkpoint area covered by the specified corresponding valve, and in which the channel emptying opened,

these valves air path and/or the water circuit is performed also with the possibility of transfer in an intermediate position between the closed and open positions, in which, on the one hand, the specified input channel communicates with the outlet channel through the specified checkpoint area corresponding to the camera and, on the other hand, the channel emptying is open

the method contains a sequence of the following steps, starting from the closed position for both paths of a fluid medium:

a) moving in an intermediate position, at least one of the valves to effect the purging of the corresponding path,

b) move to the open position only valve air path for supply air, and then

C) move to the open position of the valve, the water circuit for the supply of water

while these stages are carried out in reverse order to ensure the return to the closed position the two valves at the time of termination of the water and air.

In the private embodiment, both valves of the air circuit and the water circuit can be translated into an intermediate position to effect the purging of both paths; in this case, preferably the intermediate position of the valve, the water circuit is achieved before the intermediate position of the valve air path.

If the valve is structurally designed so that the position of the valves is possible to adjust the flow rate and to control the pressure of the fluid, preferably the position of the valve in an open configuration, and the exposure time at the specified position-dependent measured values of pressure and/or flow rate of those who UCA environment or from the data coming from a sensor of the presence of water in the output channel.

What follows is a description of the private variant embodiment of the invention presented as a non-limiting example, with reference to the accompanying drawings.

Figure 1 shows a valve in accordance with the present invention in position for lifting;

figure 2 shows the valve shown in figure 1, a top view;

figure 3 shows the valve shown in figures 1 and 2, a view in section along a vertical section plane III-III of figure 1, passing through the axis of the valve, the water circuit (in this case in the open position);

figure 4 shows the valve shown in figures 1 and 2, a view in section along a vertical section plane IV-IV of figure 1, passing through the axis of the valve air path (in this case in the open position).

figure 5 shows the valve shown in figures 1 and 2, a view in section along a vertical section plane V-V of figure 2, passing through the axis of the valve of the air and water circuits (in this case in the closed position);

figure 6 shows in detail the constituent elements of the water circuit, partial and slightly enlarged view of figure 5;

figure 7 shows in detail the constituent elements of the air circuit and partial detailed view of figure 5;

on Fig-11 shows the kinematics of the transition valve air and water paths from their closed position to their quality control Department is itoe position.

The valve 1 in accordance with the present invention, shown in Fig.1-5, intended in particular for use in spraying water under pressure, in particular, in snow (snow cannons for artificial snow production.

In the case of such facilities, snowmaking valve 1 is preferably placed in hidden locations distributed along intended for snowmaking trails; it is made with the possibility of connection, on the one hand, the input sources of water and air under pressure in the form of pipelines along the route from the machine room containing the pump and compressor units, and, on the other hand, the output of the pipelines associated with the spraying devices (for example, in the form of snow cannons).

The valve 1 includes a housing 2, in this case in the form of a compact unit in the form of a parallelepiped, which are means of 3 control.

The valve body 2 is made, for example, of aluminium; preferably it is an Assembly of several cast parts.

The housing 2 of the valve is equipped with two independent circuits C1 and C2, each of which is designed to circulate a fluid medium:

the first contour C1 in detail and separately shown in Fig.6, circulates water under pressure, and

- the second contour C2 in detail and separately pokazannaya 7, designed for air circulation under pressure.

To facilitate understanding of the description of the use of the terms "input" and "output" takes into account the direction of the normal passage of fluid in the respective contours C1 and C2.

Water circuit C1 shown, in particular, figure 6, contains its own chamber 5 in which is installed and routed the movable valve 6, which will be described in detail below.

Camera 5 includes a through hole in a generally cylindrical form, made according to the height of the housing 2 of the valve and centered on the axis 5'. It contains two axial end 5A and 5b, the opening downwards and upwards respectively during the application of the valve 1.

This circuit C1 also contains three channels 7, 8 and 9 for the passage of water inside the chamber 5:

channel 7 to enter or water supply, limited front entrance hole 7a in the housing 2 of the valve and the outlet 7b (in this case a spiral)opening into the chamber 5 (Fig 3 and 6),

channel 8 for water outlet, a restricted inlet 8A (in this case a spiral), communicating with the chamber 5 (Fig 3 and 6), and the outlet 8b extending from the housing 2 of the valve, and

channel 9 for discharging restricted inlet 9a and the outlet 9b, which will be described in detail below.

The inlet end 7a of the channel 7 filing is intended to ger lichnogo connections with common power source (not shown); as for the outlet 8b of the output channel 8, it is made with the possibility tight connection with a snow gun, preferably through a flexible pipeline.

Input 7 and output 8 channels communicate with the chamber 5 so that the outlet 7b of the input channel 7 is located under the inlet 8A of the outlet channel 8. This distinctive feature is of particular interest when emptying operations that will be described below.

The intermediate portion 5C of the camera 5, which is located between the two holes 7b and 8A, forms, when it is closed by the valve 6, the area of circulation of water within the specified camera 5 (in this case, in the uplink direction).

To optimize the discharge by gravity of the output circuit of the axis 8' of the output channel 8 is inclined upward in the direction of its output, for example, at an angle of 45°.

Above the valve 6 is made in monoblock form elongated parts forming the valve, is arranged to move by sliding in the longitudinal direction in the chamber 5.

This valve 6 includes, in particular, the two cylindrical parts, an upper 6A and the bottom 6b, United monoblock Central shaft 6C.

Both the cylindrical part 6A and 6b have the same diameter, appropriate, taking into account the gap, the diameter of the guide chamber 5. They are equipped with a toroidal Proclus is demi to ensure the integrity of the water circuit C1.

The rod 6 has a diameter approximately equal to half the diameter of the above-mentioned cylindrical portions 6A and 6b.

These cylindrical parts, an upper 6A and the bottom 6b, directed, each part of the chamber 5, respectively, from its upper end 5A and its lower end 5b.

In this case, the lower cylindrical part 6b of the valve 6 is moved in front of the outlet 7b of the channel 7 filing, forming a kind of valve and adjusting the water flow rate at the output of circuit C1 in the output level of the channel 8.

This lower cylindrical portion 6b of the valve 6 is directed, in particular, in the sleeve or the sleeve 10 installed at the lower end 5b of the camera 5 (forming, thus, the lower end).

The sleeve 10 comprises a tubular cylindrical part 10A inserted into the housing 2 of the valve on the part of the height of the camera 5.

The lower flange 10b allows you to secure the sleeve 10 on the lower part of the body 2 of the valve; the bottom 10C of this sleeve 10 also contains holes (in the drawing are not visible with regard to the section plane), which allow to remove water during emptying, which will be described in detail below.

The lower cylindrical part 6b of the valve 6 includes an upper end 6b1 in the form of a truncated cone converging from bottom to top.

This profile variable cross-section allows you to adjust flow in interaction with the profile of the 5s camera 5 and to control the pressure, m is waiting for input channel 7 output channel 8.

Channel 9 emptying is made directly to the valve 6.

This channel 9 emptying performed in this case in the form of holes drilled in the bottom of the cylindrical part 6b of the valve 6 and centered on the axis 6' of the specified valve.

Its inlet 9a is located from the upper end 6b1 lower cylindrical part 6b. In this case, it is made in the form of an inclined channel connected to the chamber 5. The outlet 9b is a side liner 10 emptying, i.e. from the lower end 5b of the camera 5.

The bottom 10c of the sleeve 10 includes a tube 11 in the form of a rod or pin which is coaxial with respect to the chamber 5, the valve 6 and to the channel 9 emptying. This tube 11 toroidal gasket at its end (not shown), is intended for closing the channel 9 emptying, when the valve 6 is switched to the open position, which will be described below. In the normal closed position of the valve 1, on the contrary, the tube 11 is separated from the channel 9, which allows for automatic emptying of the water circuit C1.

Air circuit C2, separately shown in Fig.7. similar to the water circuit C1 described above with reference to figure 5 and 6 (except for the original system purge/evacuation).

In particular, it also contains a chamber 15 in which is installed and napravlyaet the valve 16.

In this case, the camera 15 is also made in the form of through holes of General cylindrical form, made according to the height of the housing 2 of the valve and centered on the axis 15'.

This camera 15 includes two facing outward axial end 15a and 15b, which should be directed downwards and upwards respectively during the application of the valve 1.

Axis 5' and 15' of the two chambers 5 and 15 of the housing 2 of the valve are parallel to each other.

The contour C2 also contains three channels for the passage of air through his camera 15:

channel 17 to enter or air supply, limited front entrance hole 17a in the housing 2 of the valve and the outlet 17b (in this case a spiral), facing into the chamber 15,

channel 18 for an air outlet, a restricted inlet 18a (in this case a spiral), looking inside the camera 15 (7), and the outlet 18b extending from the housing 2 of the valve (figure 2 and 7), and

channel 19 purge/evacuation, is also limited through the inlet 19a and through the outlet 19b.

The input end 17a of the feed channel 17 is designed for leak proof connection with a common power source (not shown); the outlet 18b of the output channel 18 is made with the possibility tight connection with a snow gun, preferably using Flex.

The inlet 17 and outlet 18 ka is Aly air circuit C2 is communicated with the chamber 15 thus, that the outlet 17b of the input channel 17 is located above the inlet 18a of the output channel 18.

The intermediate portion 15C chamber 15 located between the two holes 17b and 18a, forms a zone of circulation of air within the specified camera 15 (in this case downward), if it is not blocked by the valve 16.

Output channel 18 is approximately located in the plane that is perpendicular to the plane formed by the axis of the camera 15 and the axis 17' of the input channel 17.

In addition, the input 17a 18b and the output openings of the air circuit C2 are located on one side of the housing 2 of the valve and centered on axes that are in parallel vertical planes.

Output channel 18 of the air circuit C2 differs also in that it includes a portion in the form of a labyrinth, intended to separate and extract air condensates.

For this output channel 18 includes a camera 20, which consists of two parts, input 20a / output 20b (relative to the direction normal to the passage of air in the channel 18), separated by a transverse partition 20c.

These parts, input 20a and the output 20b, the camera 20 are each, General cylindrical shape and centered on the axes 20a' and 20b', parallel relation to each other and relative to the axis 15' of the camera.

This chamber 20 is also equipped with a set of hole at back is s, proceed as follows to change the direction of air flow; in particular, the transverse partition 20 includes a through hole C, which is shifted upward relative to the inlet 20a1 input portion 20a. This inlet 20a1 corresponds to the end of the small channel 18C feed that passes from the inlet 18a, and the axis of this channel 18C is perpendicular to the axis 15' of the camera 15.

Preferably these openings 20a1 and 20c1 camera 20 centered on axes that are parallel relative to each other and offset adjustment. In addition, these openings 20a1 and is oriented perpendicular to the front wall, respectively, to the front wall of the partition wall 20 and the rear wall of the output chamber 20b, and this location allows you to delay the microscopic water droplets carried by the air.

In addition, the output portion 20b of the chamber 20 contains a top opening, centered on its axis 20b', which extends into the outlet 18b of the output channel 18, and the lower hole, also centered on the axis 20b', which corresponds to the inlet 19a of the channel 19 purge/evacuation.

Unlike the above-described water circuit C1 channel 19 purge/evacuation of air circuit C2 is executed directly in the housing 2 of the valve outside dimensions correspond to what she cylindrical chamber 15.

This channel 19 purge/evacuation performed in such a manner that:

his entrance aperture 19a comes into output channel 18 of the air circuit C2, as indicated above, and

- the outlet 19b enters at the lower end 15b of chamber 15.

The valve 16 of this air circuit C2 is similar to the valve 6, as described above for the water circuit C1. It is made in the form of the rolling spool containing two cylindrical portions 16a and 16b, United monoblock stem 16c.

In this case, both the cylindrical part 16a and 16b have the same diameter, appropriate, taking into account clearance, to the diameter of the chamber 15. They are also equipped with a toroidal gaskets to ensure the air tightness of the contour C2.

These top 16a and the bottom 16b of the cylindrical part are directed, each part of the chamber 15 respectively from the upper end 15a and the lower end 15b of this camera.

The rod 16C has a diameter that corresponds approximately to half the diameter of the above-mentioned cylindrical portions 16a and 16b.

The lower cylindrical portion 16b of the valve 16 forms a valve that is intended to move at the level of:

- the inlet 18a of the output channel 18, providing a flow control and pressure control at the output of the circuit C2, and

- the outlet 19b channel 19 purge/evacuation to obtain open and closed on the ogeni this channel.

The profile of the upper end of the lower portion 16b of the valve 16 can be performed with a variable cross-section to optimize the above-mentioned flow rate control and pressure control.

In addition, 3 of the control valve 1 is designed to provide simultaneous or simultaneous movement of the two valves 6 and 16 within the corresponding chamber 5 and 15.

As shown in particular in figure 5, these means 3 controls for this contain two basic elements:

a single actuator 25 to move the valves 6 and 16, and

- design 26, providing a mechanical connection between the two valves 6 and 16.

A single actuator 25, which represents, for example, electric gear motor, mounted on the upper side of the housing 2 of the valve and is protected by a cowling design.

The actuator 25 can be driven with variable speed and position control (for example, a gear motor type brushless); it is associated with the respective control means configured accordingly (in particular, control of speed and position allows you to set the duration of each phase of the following cycle).

To ensure its work, the valve 1 is preferably equipped with various sensors 27 pressure, both for air and for water. These sensors pressure is in this case connected to the channels 7 and 17 supply and output channels 8 and 18 of the two contours C1 and C2.

The housing 2 of the valve also contains a hole that allows you to lay the power and/or control.

The valve 1 also includes a device end of turn associated with different units, ensuring its operation, and the collection of parameters relevant to this work.

Controls can be programmed to automatically adjust the position of the valves 6 and 16 on the measured physical quantity, such as pressure and/or flow rate of water and/or air, or by the presence of water (detected by the corresponding sensor, for example, inside the chamber 20). The duration of the exposure in one of the positions (described below) may, therefore, depend on the values of at least one of the measured physical quantities.

According to a variant implementation, the drive element 25 causes the rotation of the screw 28 around its axis, with the specified screw 28 communicates with the inner threaded hole 29 made in the axial direction inside the upper cylindrical portion 6a of the valve 6, which is equipped with a water circuit C1.

With regard to the design 26 mechanical connection between the two valves 6 and 16, it is made in the form of a plate fixedly connected by any appropriate means (for example by screwing) to the upper end of the cylindrical is part 6a and 16a, forming the valves 6 and 16.

Thus, the speed of the translational movement is transmitted to the valve 6 water circuit C1 actuator 25, in this case accurately and continuously corresponds to the move valve 16, which is equipped with air circuit C2. Thus, given the design of the housing 2 of the valve and the valves 6 and 16, the air path is opened before the water circuit.

In practice, according to the invention, the means 3 controls the movement of the sliding of the two valves 6 and 16 in the respective cylindrical chambers 5 and 15, and each of them between:

- open position (Fig 3, 4 and 11), in which the input channels 7 and 17 are communicated with the respective output channels 8 and 18 through the intermediate zone 5c and 15c cameras, and in which the channels 9 and 19 of the discharge is closed,

- closed position (figure 5), in which the intermediate zone 5c and 15c are overlapped with the respective valves 6 and 16, and in which the output channels 8 and 18 are communicated with the respective open channels 9 and 19 emptying.

In particular, in the closed position, as shown in figure 5, the valves 6 and 16 both contours C1 and C2 are in the top position in the corresponding chamber 5 and 15.

In this closed position, the water C1 and air C2 contours covered:

the lower cylindrical portion 6b of the valve 6 water circuit C1 overlaps the outlet 7b of the input channel is 7, and

the lower cylindrical portion 16b of the valve 16 air circuit C2 overlaps the inlet end 18a of the output channel 18.

In this closed position, the water installation at the outlet of the valve may leak just under the influence of gravity through the channel 9 emptying, which is open (tube 11 is located outside the channel 9 emptying) and out through the holes drilled in the bottom 10C of the sleeve 10.

Similarly, the lower end of the valve 16 air circuit C2 is located over the outlet 19b of the channel 19, providing for the removal of water that may be present in the output channel 18 and on the gate output.

Starting from this closed position to submit the water and the air in the installation at the outlet of the valve means 3 move the control valves 6 and 16 in the direction of the lower end 5b and 15b their respective chambers 5 and 15.

Before opening the water circuit C1 is a special design of the valve 1 allows to obtain various provisions for the protection and run.

In particular, one of the provisions provides active blowing air supply line, not allowing, in particular, water that may be present in the pipeline, up to a spraying device at the output (the presence of water can lead to the formation of ice in some parts of the spraying device, in particular in the molds). This action is of optimized through the labyrinth shape of the output channel 18.

As shown in Fig and 9, the design of the valve 1 provides control valves 6 and 16 in the first intermediate configuration in which:

the valve 6 remains in the position closing the water circuit C1, and

the valve 16 air circuit C2 is the so-called intermediate position located between the closed and open positions.

In this intermediate position, the air circuit C2 has the following configuration:

on the one hand, the input channel 17 begins to communicate with the outlet channel 18 through the intermediate zone 15 from the camera, which at least partially releases the lower end 16b of the valve 16 (the inlet 18a of the output channel 18 is partially open), and

on the other hand, the outlet 19b channel 19 stores open position (it is not blocked by a valve 16).

The air under pressure coming from the input channel 17, is held simultaneously to the outlet 18b of the output channel 18 and through the channel 19; is blowing air pipe on the gate output.

Water that may be present in the air, actively removed through the channel 19 (so this channel is called the channel purge/evacuation). Thus, it is possible to avoid the problem of clogging of the spraying devices at the output of water in the solid state.

Continued movement of the valves 6 and 16 in the managing of their respective open positions leads to the second intermediate configuration, shown in figure 10, in which:

the valve 16 air circuit C2 remains in the open position (connections between input 17 and output channel 18 through the intermediate zone 15C camera 15), but now the channel 19 purge/evacuation (and, in particular, its output end 19b) is overlapped with the lower cylindrical portion 16b of the valve 16, and

- valve 6 holds water circuit C1 in its closed position.

Thus, the pressure in the air circuit of the snow gun is created before entering the water, thus avoiding any return of water through the possible mixing chamber.

After that, as shown in figure 11, the valve 6 water circuit C1 also reaches its open position, in which the lower cylindrical part 6b frees the outlet 7b of the channel 7 filing.

In this position, and at the level of the water circuit C1 input channel 7 communicates with the outlet channel 8 through the intermediate zone 5s camera, and channel 9 emptying blocked by a stopper 11.

If the power devices spraying should be stopped, the valves 6 and 16 move in the opposite order to ensure their return to the closed position shown in figure 5.

During their return to the closed position, the water circuit C1 is blocked sooner than an air circuit C2, which allows for cleaning and blowing out of the water, finding the Asa at the level of the spraying device at the output.

In the final closed position after operation is automatic emptying of both contours C1 and C2, while water exits by gravity through the appropriate channels 9 and 19 in the open position.

Not shown in the drawings the embodiment, the water circuit C1 is equipped with an output channel that is identical or similar to the output channel of the air circuit C2.

In this case, the intermediate position of the valve, the water circuit allows purging of the input circuit, in particular the removal of air trapped in the water, for example, during the filling of the water.

Preferably this intermediate position of the flushing water circuit is achieved before the provisions of the purge air circuit, in particular, to input the circuit can perform actions without wasting air.

For these operations blowing on the water and in the air followed by the opening of the air path, and then the open water circuit (as described above).

Thus, the valve allows you to remove the air contained in the water, which can interfere with the regulation of the pressure.

This valve allows you to restrict the use of means for performing this function, the removal of air; thus it is necessary to provide appropriate control of the actuator and Khujand is designed cycles of operation.

These funds blowing on the circuit can be provided regardless of the availability of funds purge air path.

In addition, a purge air circuit and means for blowing on the circuit can be performed independent of the channels engaged in emptying (through special channels or holes formed in the valve body communicating with the respective valve 6 and/or 16).

1. Valve for water distribution and air installations spraying water under pressure, in particular, for the production of artificial snow, characterized in that it contains:
case (2) with two independent circuits (C1, C2) circulation of fluid, one for air and one for water, each of these contours (C1, C2) contains (i) a chamber (5, 15) located in it a valve (6, 16) in the form of a spool, (ii) channel (7, 17) for entry of the fluid entering the specified body (2) through the inlet (7a, 17a) and connected to the camera (5, 15) through the output hole (7b, 17b), (iii) channel (8, 18) for exit of the fluid, coupled with the specified camera (5, 15) through the inlet (8a, 18a) in and out of the specified body (2) through the outlet (8b, 18b), and (iv) channel (9, 19)which is connected with the specified output channel (8, 18) or made with the possibility of establishing a message with the specified output channel is m (8, 18), equipped with the inlet hole (9a, 19a) and out through the exit hole (9b, 19b) to ensure the removal of the fluid contained in the specified output channel (8, 18),
and means for controlling these valves (6, 16), each of which is located and guided in its respective chamber (5, 15) between:
- open position in which the specified input channel (7, 17) communicates with the specified output channel (8, 18) through the checkpoint zone (5c, 15c) of the said camera and wherein said channel (9, 19) emptying blocked, and
- closed position in which the specified checkpoint area (5s, 15s) blocked specified by the relevant valve (6, 16), and in which the channel (9, 19) emptying opened,
these controls include:
a single actuator (25) for controlling these valves (6, 16) and
- design (26), arranged to provide a mechanical connection between the two valves (6, 16) to allow for the simultaneous management of these two valves (6, 16) within their respective chambers (5, 15).

2. The valve according to claim 1, characterized in that the actuator (3) is arranged to communicate with one of the valves (6), the connecting structure (26) is made with the possibility of mechanical connection of the upper ends (6a, 16a) both valves (6, 16) to provide them at the same time what about the move.

3. The valve according to claim 1, characterized in that it has a construction in which the valves (6, 16) is arranged to move, when the valve (6) air circuit is in its open position and the valve (16), the water circuit is in its closed position.

4. The valve according to claim 1, characterized in that it has a construction in which the movement of the valves (6, 16) in the open position allows you to adjust the flow rate and to control the pressure, at least one of the fluid.

5. The valve according to claim 2, characterized in that it has a construction in which the movement of the valves (6, 16) in the open position allows you to adjust the flow rate and to control the pressure, at least one of the fluid.

6. The valve according to claim 3, characterized in that it has a construction in which the movement of the valves (6, 16) in the open position allows you to adjust the flow rate and to control the pressure, at least one of the fluid.

7. Valve according to any one of claims 1 to 6, characterized in that it contains the channel (19) at its air circuit (C2) and/or the channel on their water circuit (C1), made(e) opportunity to interact with the valve (6, 16) of the corresponding path (C1, C2) for the implementation of the blowdown water to air or air to water, depending on the case, in the input pipeline before opening the specified air and/or in Django contours (C1, C2).

8. Valve according to any one of claims 1 to 6, characterized in that the channel (19) discharge air circuit (C2) is made in the case (2) valve outside dimensions of the respective chamber (15), with its inlet opening (19a) communicates with the outlet channel (18) of the specified air circuit (C2)and the outlet (19b) is at the lower end (15b) of the said chamber (15)and the valve (16) of the specified air circuit (C2) is arranged to move the controls in the intermediate position between the closed and open positions, wherein said input channel (17) communicates with the outlet channel (18) through the checkpoint area (15c) of the chamber (15)and the channel (19) emptying is open, in particular, to ensure the active operation of the purge air circuit (C2) during the specified opening of the air path.

9. The valve according to claim 7, characterized in that the channel (19) discharge air circuit (C2) is made in the case (2) valve outside dimensions of the respective chamber (15), with its inlet opening (19a) communicates with the outlet channel (18) of the specified air circuit (C2)and the outlet (19b) is at the lower end (15b) of the said chamber (15)and the valve (16) of the specified air circuit (C2) is arranged to move the controls in the middleware is agenie between closed and open positions, wherein said input channel (17) communicates with the outlet channel (18) through the checkpoint area (15c) of the chamber (15)and the channel (19) emptying is open, in particular, to ensure the active operation of the purge air circuit (C2) during the specified opening of the air path.

10. Valve according to any one of claims 1 to 6, 9, characterized in that the outlet channel (18) of the air circuit (C2) contains part in the form of a labyrinth containing chamber (20) of two parts - input (20a) and output (20b), separated by a transverse partition wall (20c), in which is formed a through hole (20c1), is shifted upward relative to the inlet (20a1) specified input part (20a), while the output part (20b) of the chamber (20) continued in the upper part of the outlet (18b) air circuit (C2) and contains in the lower part of the inlet opening (19a) of the channel (19) purge/evacuation.

11. The valve according to claim 7, characterized in that the outlet channel (18) of the air circuit (C2) contains part in the form of a labyrinth containing chamber (20) of two parts - input (20a) and output (20b), separated by a transverse partition wall (20c), in which is formed a through hole (20c1), is shifted upward relative to the inlet (20a1) specified input part (20a), while the output part (20b) of the chamber (20) continued in the upper part of the outlet (18b) of the air circuit (C2) and contains the lower is her part of the inlet opening (19a) of the channel (19) purge/evacuation.

12. The valve according to claim 8, characterized in that the outlet channel (18) of the air circuit (C2) contains part in the form of a labyrinth containing chamber (20) of two parts - input (20a) and output (20b), separated by a transverse partition wall (20c), in which is formed a through hole (20c1), is shifted upward relative to the inlet (20a1) specified input part (20a), while the output part (20b) of the chamber (20) continued in the upper part of the outlet (18b) of the air circuit (C2) and contains in the lower part of the inlet opening (19a) of the channel (19) purge/evacuation.

13. Valve according to any one of claims 1 to 6, 9, 11, 12, characterized in that the channel (9) emptying water circuit (C1) is preferably in the valve (6) specified water circuit (C1) at the level of its lower end, with the specified channel (9) emptying contains the hole (9b)extending across the lower end (5b) of the chamber (5)and an inlet opening (9a)that communicates with the zone (5c) passage of a fluid medium specified camera (5), the specified channel (9) the discharge is made with the ability to be open or closed depending on the position of the specified valve (6) through the tube (11), located at the lower end (5b) of the said chamber (5).

14. The valve according to claim 7, characterized in that the channel (9) emptying water circuit (C1) is preferably in the valve (6) of the criminal code of the related water circuit (C1) at the level of its lower end, when the specified channel (9) emptying contains the hole (9b)extending across the lower end (5b) of the chamber (5)and an inlet opening (9a)that communicates with the zone (5c) passage of a fluid medium specified camera (5), the specified channel (9) the discharge is made with the ability to be open or closed depending on the position of the specified valve (6) through the tube (11), located at the lower end (5b) of the said chamber (5).

15. The valve according to claim 8, characterized in that the channel (9) emptying water circuit (C1) is preferably in the valve (6) specified water circuit (C1) at the level of its lower end, with the specified channel (9) emptying contains the hole (9b)extending across the lower end (5b) of the chamber (5)and an inlet opening (9a)that communicates with the zone (5c) passage of a fluid medium specified camera (5), the specified channel (9) the discharge is made with the ability to be open or closed depending on the position of the specified valve (6) through the tube (11), located at the lower end (5b) of the said chamber (5).

16. The valve according to claim 10, characterized in that the channel (9) emptying water circuit (C1) is preferably in the valve (6) specified water circuit (C1) at the level of its lower end, with the specified channel (9) emptying contains the exit hole (9b), extending across the lower end (5b) of the chamber (5)and an inlet opening (9a)that communicates with the zone (5c) passage of a fluid medium specified camera (5), the specified channel (9) the discharge is made with the ability to be open or closed depending on the position of the specified valve (6) through the tube (11), located at the lower end (5b) of the said chamber (5).

17. Valve according to any one of claims 1 to 6, 9, 11, 12, 14-16, characterized in that the water circuit (C1) outlet (7b) input channel (7) is located under the entrance hole (8a) output channel (8), and for air circuit (C2) an outlet opening (17b) input channel (17) is located above the entrance hole (18a) of the outlet channel (18).

18. The valve according to claim 7, characterized in that the water circuit (C1) outlet (7b) input channel (7) is located under the entrance hole (8a) output channel (8), and for air circuit (C2) an outlet opening (17b) input channel (17) is located above the entrance hole (18a) of the outlet channel (18).

19. The valve of claim 8, wherein the water circuit (C1) outlet (7b) input channel (7) is located under the entrance hole (8a) output channel (8), and for air circuit (C2) an outlet opening (17b) input channel (17) is located above the entrance hole (18a) of the outlet channel (18).

20. The valve according to claim 10, characterized the eat, that water circuit (C1) outlet (7b) input channel (7) is located under the entrance hole (8a) output channel (8), and for air circuit (C2) an outlet opening (17b) input channel (17) is located above the entrance hole (18a) of the outlet channel (18).

21. The valve according to item 13, wherein the water circuit (C1) outlet (7b) input channel (7) is located under the entrance hole (8a) output channel (8), and for air circuit (C2) an outlet opening (17b) input channel (17) is located above the entrance hole (18a) of the outlet channel (18).

22. The method of application, at least one control valve for the distribution of water and air in installations spraying water under pressure, in particular, for the production of artificial snow, with the specified valve or the valves form two paths of fluid, one for air and one for water, and contain:
case (2), equipped with these independent circuits (C1, C2), each of which is designed to circulate a fluid medium, one for air and one for water, each of these contours (C1, C2) contains (i) a chamber (5, 15) mounted inside the valve (6, 16) in the form of a spool, (ii) channel (7, 17) for entry of the fluid entering the specified body (2) through the inlet (7a, 17a) and coupled with the specified camera (5, 15) through the output hole at back is s (7b, 17b), (iii) channel (8, 18) for exit of the fluid, coupled with the specified camera (5, 15) through the inlet (8a, 18a) in and out of the specified body (2) through the outlet (8b, 18b), and (iv) channel (9, 19) for emptying which is connected with the specified output channel (8, 18) or made with the possibility of establishing a message with the specified output channel (8, 18), equipped with the inlet hole (9a, 19a) and the upcoming through the hole (9b, 19b), in particular, to ensure the removal of the fluid contained in the specified output channel (8, 18), and means for controlling these valves (6, 16), each of which is located and guided in its respective chamber (5, 15) between:
- open position in which the specified input channel (7, 17) communicates with the specified output channel (8, 18) through the checkpoint zone (5c, 15c) of the said chamber (5, 15) and wherein said channel (9, 19) emptying blocked, and
- closed position in which the specified anadromous zone (5c, 15c) blocked specified by the relevant valve (6, 16), and in which the channel (9, 19) emptying opened,
these valves (6, 16) of the air circuit (C1) and/or water circuit (C2) is made with the possibility of transfer in an intermediate position between the closed and open positions, wherein said input channel (7, 17) communicates with the outlet channel (8, 18) through the criminal code of the related checkpoint zone (5c, 15c) of the camera (5, 15)and the channel (9, 19) emptying opened,
the method includes the sequential steps that, starting from the closed position for both circuits (C1, C2) fluid:
a) move in an intermediate position, at least one of the valves (6, 16) to carry out a purge of the corresponding path (C1, C2),
b) move to the open position only valve (16) of the air circuit (C2) for the supply of air, and then
C) move to the open position of the valve (6) water circuit (C1) for the supply of water,
while these stages are carried out in reverse order to ensure the return to the closed position the two valves (6, 16) at the time of termination of the water and air.

23. The method according to item 22, characterized in that the valves (6, 16) of the air circuit (C2) and water circuit (C1) can be translated into an intermediate position to effect the purging of both paths, but such an intermediate position of the valve (6), the water circuit is achieved before the intermediate position of the valve (16) of the air path.

24. The method according to item 22 item 23 or, characterized in that the valve (1) is structurally designed so that the position of the valves (6, 16) allows you to adjust the flow rate and to control the pressure of the fluid at the position of the valves (6, 16) in an open configuration and and time at the specified position-dependent measured values of pressure and/or flow rate of the fluid or from the data coming from a sensor of the presence of water in the outlet channel (18).



 

Same patents:

FIELD: heating.

SUBSTANCE: device for generation of artificial snow by means of a snow cannon, in which water is atomised by compressed air that is supplied with a compressor to a compressor zone that has an inlet air supply hole to the compressor zone and an outlet compressed air supply hole to the snow cannon. Compressed air is supplied through the primary circuit of the heat exchanger, the secondary circuit of which forms some part of an evaporator in a closed cooling circuit, in which cooling agent circulates by means of a compressor element actuated by an actuator. The device includes a controller to provide the desired temperature or pressure of dew point at the outlet of the primary section of the heat exchanger.

EFFECT: use of this invention allows generating high-quality snow and reducing total snow generation time.

13 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: installation consists of water spraying unit made in form of row of pipes arranged at equal space between them radially in plane perpendicular to axis of rotation of hollow shaft of electric engine. Inlets of pipes are connected to a cavity of the electric engine shaft. Sprayers are secured on outlets of pipes. The water spraying unit starts to operate under the mode of a centrifugal pump upon turning electric drive on and after supply of water through a channel of the hollow shaft of the electric engine into the water spraying unit.

EFFECT: reduced hydraulic resistance of flow channels of water spraying unit ensuring supply of water under low pressure.

2 cl, 3 dwg

FIELD: snow production.

SUBSTANCE: the apparatus has at least one water-air atomizer adapted for ejection of water-air mixture, featured by the fact that it has at least one jet-type pump that is actuated by water as the main drive aid, accomplishes mixing of air with water and provides compression of the mixture of water and air with formation of a water-air mixture that is supplied at least to one water-air atomizer.

EFFECT: enhanced efficiency of use of the given apparatus for production of snow.

36 cl

The invention relates to the field of artificial creation of snow used in various fields, for example for cleaning atmospheric air, dust or other airborne particles, as well as for the formation of artificial snow used, preferably, for events at the sports and recreation complexes

The invention relates to a device for making artificial snow

The invention relates to methods and techniques of desalination natural freezing and can be used to process mineralized natural and anthropogenic water, including wastewater industry and agriculture

The invention relates to the production of snow and can be used for dust precipitation at low temperatures in mines and quarries

Valve assembly // 2482370

FIELD: machine building.

SUBSTANCE: valve assembly for control of fluid medium supply from a high pressure header to a working chamber of the mechanism operating with fluid medium includes the main valve, an auxiliary valve, and electromagnet and a core. The main valve includes an element of the main valve with the seating on the surface and the seat of the main valve. An auxiliary valve includes an auxiliary valve element. The auxiliary valve opens before the main valve so that pressure on the main valve element can be balanced. The core is connected to the auxiliary valve element and has the possibility of being moved along the channel passing between the first position and the second position. The connection between the core and the auxiliary valve element has the possibility of ensuring the core movement from the first position to the second position without the corresponding movement of the auxiliary valve element. The core moves from the first position closer to the electromagnet when the auxiliary valve opens by means of forces applied through the connection between the core and the auxiliary valve element. The mechanism operating with fluid medium is described.

EFFECT: creation of the valve assembly that is capable of being opened quickly against considerable pressure difference, thus reducing the power consumption.

17 cl, 10 dwg

FIELD: machine building.

SUBSTANCE: valve has the possibility of being attached to fuel tubes and includes movable head in valve body. Head is turned about axis in valve body and rigidly attached to the first end of driven shaft brought into rotation by means of electric drive mechanism. Head includes a through hole with axis and has two stable positions on two ends of head rotation zone. Axis of hole is oriented so that fuel flow via tubes is available in the first open position of the head. Axis of hole is oriented so that fuel flow via tubes is prohibited in the second closed position of the head. Valve includes torque moment formation devices and position determination devices. Torque moment formation devices are rigidly attached to head and form torque moment on drive shaft, which changes depending on head position in valve body. Position determination devices supply signals characterising the positions of the above drive shaft. Valve operation diagnostics device and method are described.

EFFECT: higher reliability of device.

10 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: drive two-stage multi-plane-pinion planetary gearbox comprises input shaft 4, support central wheel 11, two-support planet carrier 6, plane pinions in number corresponding to odd number of said pinions in every stage and arranged in pairs on said carrier 6, and two-support output shaft 19 with output central wheel 12 fitted thereon. Axes of motor rotor 7, input shaft 4, carrier 6 and output shaft 19 are arranged inter-aligned and aligned with shutoff valve spindle travel axis. Stator covers rotor and is secured on the flange of housing 1. Input shaft, pinion carrier and reduction gear output shaft are hollow components. Sums of central wheel teeth in both planetary stages are equal and selected from the range of 200…400. Numbers of second stage central wheels are selected from parameters series.

EFFECT: higher reliability and efficiency, decreased sizes.

12 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: multi-way valve (30) includes body (31), head (32) from which outer end (33) of rotary stem (34) of valve projects, and actuator (1). Head (32) of valve has connection means (35) for movable connection of actuator (1) to housing (31) of valve and outer end (33) of valve stem (34), which has attachment surfaces (36), for fixed interaction with the first end (11) of connection element (10) the other end (12) of which interacts in rigid manner with rotary control shaft (2) of actuator (1). Connection element (10) has the possibility of being reversed. Both ends (11; 12) of connection element (10) are provided with central hole (13) and toothed rim (15, 16). One hole (13) is provided with possibility of fixed interaction with attachment surfaces on external end of valve stem of the first type. The other central hole (14) is provided with possibility of fixed interaction with attachment surfaces (36) on external end (33) of valve stem (34) of the second type. Each toothed rim (15, 16) envelopes the corresponding hole (13, 14), and when it faces the opposite side from valve head (32), it interacts with gear teeth (3) in rigid manner. Those teeth are made on mating end of actuator shaft (2) of one and the same type. There is the second invention object.

EFFECT: enlarging functional capabilities owing to using one and the same actuator and one and the same connection element for various types of rotary valve stems.

12 cl, 2 dwg

FIELD: fire fighting systems.

SUBSTANCE: invention refers to protection drive device with emergency protection circuit and can be used in firefighting and monitoring systems used in the sphere of air conditioning, heating and ventilation. Protection drive device (10) with circuit (12) of emergency protection installs damper or valve into the set position ensuring safety for regulation of volumetric gas or flowing medium flow. The important parts of the device (10) are the executing mechanism (14) with controlled electric motor (28), unit (20) of capacity storage, energy converter (22) with energy module and power unit (18). During normal operation electric current in the energy module of converter (22) is converted into lower voltage and the charge is stored in the unit (20) comprising at least one double-layer condenser. In case of voltage decrease lower the set value or in case of electric supply failure the accumulated electric charge is converted with the same energy module into higher voltage, and as a result, the electric motor (28) works until the set position ensuring safety is reached.

EFFECT: simplification and improvement of emergency protection circuit.

25 cl, 9 dwg

FIELD: electricity.

SUBSTANCE: electromechanical drive includes electric motor, stator, rollers and output stock. Stator encloses hollow rotor. Rollers are equipped with external thread and arranged in cavity of rotor in threaded sleeve in circumferential direction. Axes of rollers are parallel to rotor axis. Screw is coaxially arranged inside rotor. Screw has external thread. Thread of screw interacts with thread of rollers. Thread of rollers interacts with internal thread of sleeve. Sleeve is rigidly attached to one end of output stock. The latter is installed so that it is protected against being turned. One screw end is rigidly attached to rotor. The other end of screw is arranged in cavity of output stock.

EFFECT: higher reliability of electromechanical drive.

9 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: invention is designed for application of device preventing rotation of servo-motor mounted on driven shaft of rotary shut-off gate of gas-transporting pipe. In particular, this gate can be positioned in a structure of a heating pipe, ventilation, air conditioning or smoke pipe. Device preventing rotation of servo-motor (10) is set with geometric lock and/or power lock on projecting driven shaft (22) of rotary shut-off gate (62) of gas-transporting pipe (34). At least one shifting lengthwise bracket (36) maintaining servo-motor (10) is positioned at adjusted axial distance (a) from driven shaft (22).

EFFECT: simplified assembly and operation of device.

10 cl, 10 dwg

FIELD: transport.

SUBSTANCE: valving drive comprises reversible motor and extending spindle. The latter is coupled with valve gate. Reduction gear is arranged between motor and extending spindle. Reduction gear consists of housing, drive cam shaft, bevel pinion, cone coupling, sliding nut and hollow output shaft. The latter is arranged aligned with extending spindle. Helical pinion is a two-rim pinion. Said helical pinion is jointed with housing and engaged with two-rim pinion rim. Cone coupling is jointed with hollow output shaft and engaged with two-rim pinion rim. Sliding nut is fitted at hollow shaft lower part.

EFFECT: motor reduced rpm for lifting valve gate at drive lower weight and smaller sizes.

1 dwg

FIELD: machine building.

SUBSTANCE: drive of valve consists of case, valve rod, spring and of driving devices. The rod is connected to a gate element. The gate element travels between the first and the second positions. The spring shifts the gate element from the said first position into the said second position. The first driving devices are designed for tension of the spring and for retaining the spring in a compressed state. The second driving devices are designed for transfer of the gate element from the first position into the second position. The second driving devices include a transmission with a roller screw. Also the second driving devices operate independently from the first driving devices. Releasing devices free the spring to return the gate element into the second position. There is disclosed the version of design of the valve device for this drive.

EFFECT: increased speed of response for valve opening in emergency cases.

7 cl, 10 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention relates to field of pipeline valves, particularly to structures of quick-acting motor valves with axisymmetric seats and rotary plugs, and is provided for close control of flows of arbitrary flowing fluids on the basis of liquids and gases, locking and unlocking of vacuum pipelines. Motor valve with rotary plug contains casing 1 with inlet 2 and outlet 3 branches, axisymmetric seat 4, rotary plug 5, rotary drive on the basis of piezoelectric motor 7. Seat 4 is rigidly fixed inside the casing 1. Rotary plug 5 is put into seat 4 and allows guide bar 6. Motor 7 allows annular piezoelectric oscillator 8 radially directed vertical acoustic waves. Oscillator 8 is rigidly fixed with casing 1 of valve and outfitted by facilities for connection to pulsed current source and control system. Flexible annulus 9 is acoustic hermetically joined to piezoelectric oscillator 8. Annulus 9 is outfitted by flexible clack tappet 10. Rotor 11 is located with steady clearance relative to piezoelectric oscillator. Rotor 11 is introduced into frictional contact with flexible clack tappet 10. Rotor 11 is interlocked with guide bar 6 of rotary plug 5.

EFFECT: rising of valve performance and rising of precision of angular positioning of plug relative to seat.

7 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: operation method of a valve controlling a cooling agent flow in a cooling system, which contains the first valve part (1) having at least one hole (2, 5) and the second valve part (3) having at least one hole (4, 6) where the first (1) and the second (3) valve parts are installed so that they can perform relative movements. Relative location of the hole or holes (2, 5) of the first valve part (1) and the hole or holes (4, 6) of the second valve part (3) creates the valve opening degree due to an overlap area of hole (2, 5) of the first valve part (1) and hole (4, 6) of the second valve part (3); with that, the method provides for the following: movement of the first valve part (1) and/or the second valve part (3) from the position determining maximum degree of the valve opening to the position determining minimum valve opening so that relative movement speed of the first valve part (1) and the second valve part (3) changes as a function of surface area of the overlap area between hole (2, 5) of the first valve part (1) and hole (4, 6) of the second valve part (3). Besides, the speed decreases at reduction of surface area of the overlap area. Relative movement speed between the first valve part (1) and the second valve part (3) also depends on the required mass flow rate of cooling agent flowing through the valve so that when load on cooling systems requires large amount of cooling agent supplied to an evaporator, thus requiring high mass flow rate of cooling agent flowing through an expansion valve, there provided is such relative movement speed of valve parts (1, 3), which can lead to pressure pulsation when load on cooling systems requires lower amount of cooling agent supplied to the evaporator, which requires lower mass of cooling agent flow passing through the expansion valve.

EFFECT: such relative movement speed of valve parts is provided, which prevents a hydraulic impact.

7 cl, 8 dwg

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