Hydraulic ram

FIELD: engines and pumps.

SUBSTANCE: hydraulic ram comprises pressure pipeline, air chamber with inlet valve communicated with said pipeline, piston fitted in casing and piston stroke limiter. Said piston is secured to rod. Hydraulic ram comprises hydraulic drive composed of interconnected piston-type one-way servo-motor and throttle valve. Piston fitted in cylinder is arranged parallel with pressure pipeline. Impact valve hinge pin is located between pipeline axis and pipeline wall.

EFFECT: higher efficiency of hydraulic rams.

 

The invention relates to a pump engineering turn out, in particular, to the design of hydraulic Taranov, and can be used as vodopodyomnaya in the system of land reclamation and water resources.

Known hydrotron containing the supply pipe with a shock valve and located on the pipeline of the air cap with check valve and discharge line, the shock valve is made in the form of a piston having a diagonal slice from the side of the cap and located perpendicular to the axis of the feed pipe (USSR Author's certificate No. 918576, CL F04F 7/02, 1982).

The disadvantage of this Tarana is the lack of coherence of the drum and discharge valves, resulting in reduced reliability due to the need to frequently make the position of the piston vertically, causing closing of a sharp blow. This leads to the destruction of the walls of the pipeline, i.e. low reliability. Ultimately, reduce the durability of the machine and the efficiency as a whole. The design of the shock valve heavy and complex. Work flow in the pipeline is often aggressive environment (sand, clay etc), which ultimately hinders the operation of the shock valve. In addition, there are large hydraulic resistance of the piston and the braking movement of the shock valve with low performance.

Also known an air cap of hydracarina, comprising a housing with an air and liquid compartments, an inlet valve and fitting pressure line, a piston dividing the housing for air and liquid cavity and rigidly mounted spring-loaded rod that has a stroke limiter (USSR Author's certificate No. 1224464, CL F04F 7/02, 1984).

A disadvantage of the known device is a low efficiency due to waste energy on challenging management position of the shock valve, designated high-altitude location in the body and depending on the weight of the valve, that is to lift a certain part of the height you need to expend a lot of energy flow. In this part of the unproductive energy is lost to resistance in the case when a large enough weight. In addition, the air cap, provided with a piston, requires additional effort on the ascent of the piston in the housing, which requires maximum effort pressure in the pipeline, i.e. the part of the energy overhead is lost in the hydraulic shock rise from the horizon in the case of the air cap. Therefore, advanced and proposed artificial recharge compressor through a spiral tube in the lid, which leads to higher operating hydraulic RAM.

An overall review of the operation of the pump shows that what should be the exchange of energy between the fluid and any moving body work, to which energy is supplied.

Thus, it should be noted that we need such a pump in which the fluid moves under force in the chamber, having constant communication with the inlet and outlet nozzles.

The purpose of the invention to increase productivity by converting the pressure energy of the flow into mechanical energy.

This objective is achieved in that the hydraulic RAM (containing discharge pipe connected therewith an air cap with an inlet valve, a pipe connecting the cap to the water tank, mounted in the housing, the piston and the stroke limiter him, and a piston fixed to the rod, the RAM contains the hydraulic actuator, is made in the form of two mechanically interconnected with the piston of the servo motor unilateral action and the throttle valve, and a piston placed in the cylinder, installed parallel to the pressure pipe, the axis of the hinge valve is located between the axis of the pipe and its wall, and it is further provided with a housing fixed to the wall and placed in the chamber, communicated with the discharge pipe, the cavity of which communicates with apporopriate pipe, and the housing contains a diaphragm actuator, made in the form of an elastic diaphragm, fixed on the rod, missed through which risku, on the lower end of which is fixed to the valve can be used to communicate with the inlet hole of the housing associated with apporopriate pipe, the upper cavity of the membrane actuator is provided with a check valve and a charging tube, and the charging pipe is connected with apporopriate pipe.

This design hydraulic drive provides automation hydraulic RAM the throttle valve (drums) in collaboration sealed enclosure located in the chamber, connected rigidly with the partition and the outlet pipeline. The maximum pressure reciprocating pump connected to the stem with the valve lever, the axis of rotation the last few displaced from the axis of the pipe to the wall it reduces the pressure force on the valve to rotate it around an axis substantially due to the fact that the rise carry a great part of the shock valve, made in the form of a throttle. In addition, the moment of forces hydrodynamic effect of the fluid on the wall of the shock valve can be reduced by changing the calculation of the length of the lever. Himself of the shock valve is streamlined in the absence of significant face area. This ensures full coverage valve of the pipeline, given the connection with the blocking piston pump.

the shock valve is opened only when the trigger control device made in the form of a body placed in the chamber and fixed to the wall with the outlet pipe. Emptying the cavity of the housing, made with a diaphragm actuator, is determined by the opening of the check valve, mounted on the rod, and release of water in the discharge pipe, which is connected with a hydraulic shock in the pressure pipeline is in accordance with the distribution of hydraulic waves in the past. This provides a significant reduction in the pressure on top of the membrane, because the top cavity is released from the liquid by vacuum effect when joining the work apporopriate pipe associated with the charging tube. Resulting in a working spring adjusts the corresponding moving down the position of the shutoff valve in the inlet hole of the socket and saves the time required to close the valve, at the same time by opening the check valve in the upper part of the body and there is a flow of fluid in namebrand cavity that requires a tight shut-off valve drain holes in the housing with a slight time.

The actuator housing in the form of a diaphragm actuator having a relatively small size, PR is a process flow of a surge in pressure pipeline and regulation of the servo piston single-acting with shock valve, made in the form of the throttle.

Efficiency Tarana is that it is simple in design, improves the accuracy of the regulation and performance in the work, while working with an aggressive environment reliable, no sudden shock upon contact with the pipe when changing the closing or opening of the shock valve. In addition, Taran is characterized by reliability ensure a lasting moment of closing the shock valve connected to the hinge lever with the rod of the piston of servo motor associated with pressurised pipeline.

The drawing shows a schematic diagram of a hydraulic battering RAM.

Hydraulic RAM contains pressure pipeline pipeline 1, which is connected with him an air cap 2 with the injection valve 3 and the discharge pipe 4 connected to the water tank 5, the Hydraulic actuator is made in the form of mechanically interconnected with the piston of the servo motor 6 unilateral action and the shock valve 7 in the form of a throttle valve installed with a horizontal axis 8 of rotation located between the axis of the discharge pipe 1 and its wall and divides the valve 7 into two unequal parts 9 and 10. On the inner side of the valve 7 is installed float-counterweight 11, covering the edge of the valve 7 with the side part 10. One end of the axis 8 passing through a case Tr is aprovada 1 to the outside and is connected through a lever 12, the free end of which is pivotally connected to a rod 13 with a piston 14 mounted for movement in the cylinder 15, and the housing of the servo motor 6 with the cylinder 15 is parallel to the pipe 1. When the cylinder 15 contains the lugs 16 and 17, and the piston 14 is placed between them, and the lugs 16 and 17 is arranged to limit the movement of the piston 14. Shock valve 7 in the form of a throttle valve is mounted for engagement with the stop 18, the limiting rotates the valve 7 in the pipeline 1. The cylinder 15 of the piston 14 is located in the immediate vicinity of the discharge pipe 1 and is equipped with a pressure tube 19, is in communication with the pressure pipe 1 in the form of socket 20.

The control device is made in the form of the control diaphragm actuator and fixed inside the housing 21, in which the elastic membrane 22 with a hard centre 23 mounted on the rod 24 with a check valve 25 with the possibility of its interaction with the inlet opening of the housing associated with apporopriate pipe 26 of the membrane actuator, and the upper chamber 27 is inside the spring 28 and the wall of the inlet with a check valve 29. The stem 24 of the upper end passed through the guides 30 and 31 in the cover 32.

The housing 21 with the membrane Executive actuator is rigidly fixed to the pipe 26 and the charging tube 33 to p is regalodge 35. In addition, the charging tube 33 connected to the upper cavity 27, isolated from the lower cavity 34 of the membrane 22, is connected by discharge line 36 to the nozzle 26.

For optimal backwater water in the delivery pipe 1, respectively, and increase the pressure before the socket 20 of the tube 19, which is connected with the power cylinder 15 and to quickly move to the left of the piston 14, the increase in hydraulic shock valve 7 (valve 7 can rotate on the axis 8 is much faster), the crest of the overflow partition 35 is installed at a certain height, namely, to create the optimum pressure before the motor 6. Drain water through the crest of the septum, made in the form of Weir, flows into the discharge pipe 36.

Hydraulic RAM operates as follows.

On the main pipe 1 opens a valve (not shown), and when open, the shock valve 7 water flows to the walls 35. At the same time, by creating a pressure, the pressure in front of the socket 20 of the tube 19 is increased, and the water under pressure enters the working space of the servo motor in the form of a cylinder 15, the inlet tube 19 which is at the time of actuation of the servo motor drain during the reverse movement of the piston 14. The piston 14 moves to the left and turns sharply shock valve 7 counterclockwise to the key (in closed position) and held in this position, until the work of the Executive mechanism and the float-counterweight 11 is additionally accelerates the rotation of the valve 7 on the axis 8 due to the possibility of lifting force. Closing the shock valve 7 causes the hammer, the energy which forces the discharge valve 3 to open. Water through the open discharge valve is served in an air cap 2. When closing the shock valve 7, while behind it (turn the lower part 9 in the side walls), there is formed a reverse shock wave in the side walls 35. At this point, when the difference in water pressure from two sides of the shock valve 7 will be more gravity valve 25, there is a rapid opening of the water outlet hole of the housing 21, is associated with apporopriate pipe 26, and the closing of the check valve 29. Water through pipe 26 is discharged into the discharge pipe 36, and from the cavity 27 water quickly sucked through the charging tube 33 through the outlet pipe 26 to the vacuum zone at the outlet of the pressure source at a given hydraulic gradient between the upper and lower downstream. Because of the presence of the calculated diameters of the working holes and a certain arrangement of valves 25 and 29 in the membrane actuator is the outflow of water in the lower water outlet pipe 36.

As a result of falling levels before the partition 35 and reduce the pressure on the front of I the house into the socket 20 of the tube 19 is quick draining of the working cavity of the cylinder 15 through the pipe 19 into the pipe 1. After the liberation of the cylinder bore 15 and under the action of the return stroke of the piston 14, the water from the cavity of the cylinder is pressed into the pipe 1 through the socket 20. When this occurs simultaneously opening shock valve 7 until the next moment when specified the design head of the front wall 35, as in the valve part 10 located to the right of the axis of rotation exceeds the size of the left part 9, however, the right side located in the direction of the lever 12, pivotally connected with the rod 13 of the piston 14 moves to the right, valve 7 is rotated clockwise (in the open position), and the force of hydrostatic pressure on the valve casing 7 to rotate it around the axis is greatly increased by further opening of the valve 7, thanks is the movement of the piston 14 in the opposite direction.

With the axis of the valve mechanically connected to the piston is moved to the stop body, which again provides an initial horizontal position in the pipeline 1, i.e. the moment of weight to his right side with respect to an axis more time weight to his left side. With the axis 8 of the valve 7 can be mechanically connected end electrical switches, signaling the end positions of the valve 7 (not shown).

Spring 28 adjusts the corresponding moving down position locking the reg is youseo valve 25 above the intake opening of the housing 21, associated with the pipe 26. Through the pipe 26 is provided previously specified discharge water flow.

The release of water is linked to the reverse hydraulic shock wave, respectively, is regulated and the time of the drawdown level of the upstream. Due to the small volume of water in adminpanel cavity 27 when filling it requires negligible time required for energy to bending of the membrane up, and Vice versa, filling the latter with an adjustment spring increases the pressure in adminpanel cavity.

It maintains a given level before the partition 35 and closing of the valve 25, and also by the adjustment lever 12, which reduces the geometric dimensions of the hydraulic actuator with the servo piston 6, which reduces the consumption of materials.

After the opening shock of the valve 7 closes the valve 25. The working cycle is repeated in the described sequence.

The efficiency of the hydraulic RAM is that it is simple in design, improves the accuracy of the regulation and performance in the work, with no large load on the friction in the pressure flow and decreases the amount of control effort when working Tarana. In addition, Taran is characterized by reliability ensure a lasting moment of closing the shock valve and from Ustia silting cavities regulating membrane actuator.

1. Hydraulic RAM containing a discharge pipe connected therewith an air cap with an inlet valve mounted in the housing, the piston and the stroke limiter him, and a piston fixed to the rod, characterized in that, to increase productivity by converting the pressure energy of the flow into mechanical energy, Taran contains a hydraulic actuator, is made in the form of two mechanically interconnected with the piston of the servo motor unilateral action and the throttle valve, and a piston placed in the cylinder, installed parallel to the pressure pipe, the axis of the hinge valve is located between the axis of the pipe and its wall.

2. Hydraulic RAM according to claim 1, characterized in that it further provided with a housing fixed to the wall and placed in the chamber, communicated with the discharge pipe, the cavity of which communicates with apporopriate pipe, and the housing contains a diaphragm actuator, made in the form of an elastic diaphragm, fixed on the rod, missed through the cover, the lower end of which is fixed to the valve can be used to communicate with the inlet hole of the housing associated with apporopriate pipe, the upper cavity of the membrane actuator is equipped with check valve and charger pipe.

3. Hidraulicas the s battering RAM according to claim 2, characterized in that the charging pipe is connected with apporopriate pipe.



 

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EFFECT: invention provides for control of operation, increased reliability, higher efficiency of a hydraulic ram.

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FIELD: machine building.

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EFFECT: higher efficiency, decreased weight and overall dimensions.

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