Device and method for determining failure in motor-operated valve

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

 

The present invention relates to a valve, which is provided by a controlled distance drive mechanism. In particular, the invention relates to a device and a method of determining faults in the main structural elements of the valve, such as a drive shaft, engine valve, in particular, when the valve is used in such an important, from the point of view of the security system, as the fuel system of the aircraft.

Fuel system aircraft contain, as a rule, the fuel valves to perform tasks such as interrupt fuel supply to the engines, the beginning of fuel or moving fuel between independent tanks.

As shown in figure 1, the fuel injection valve 1 comprises a drive mechanism 11 driven by an electric motor 12 connected to the gearbox. The drive mechanism 11 causes the rotating spherical head 13 through the drive shaft 14, which is inserted inside the fuel tank 15. The spherical head 13 is placed in the housing 16 of the valve and is mounted rigidly connected in rotation around the axis 132 mentioned inside the valve body. The spherical head 13 includes a through hole 133 with the axis 134, which is essentially perpendicular to the axis 132. The body 16 of the valve contains two end 161 that has essentially a cylindrical shape, which are attached to the fuel tube 17, moreover, their diameter being less than the diameter of the spherical head. The two ends 161 are located essentially on the same axis 171, which is essentially perpendicular to the axis 132.

Such fuel valves when operating in normal mode do not have any intermediate position: can be either an open position or closed position.

When the valve is in the open position that allows flow of fuel, the axis 134 of the holes 133 of the spherical head 13 and the axis 171 of the fuel tubes 17 are arranged essentially coaxially.

When the valve is in the closed position, which ensures the termination of the flow of fuel, the axis 134 of the holes 133 of the spherical head 13 and the axis 171 of the fuel tubes 17 are essentially perpendicular to each other.

Current methods of control of such valves consist in comparing the controlled position of the valve and determine the position of the valve through the contact breakers located in the actuator 11. Malfunction of the device control is associated with the risk of damaging one or more of the contact breakers, for example, caused problems electrical contact or damage to the mechanism of the contact breaker. In this case, the position of the valve cannot be determined, and the error message that is passed as for example, "unspecified error"is returned in the control system of the aircraft. Thus, it is considered necessary activities for maintenance and repair for closing the valve in a known position and replace the contact breaker 11, which may entail the setting for the repair of aircraft and more or less prolonged periods, is required to determine the damage and work on fixing it. Another limitation is that is controlled only by the position of the drive mechanism, not the actual position of the spherical head 13 or the drive shaft 14. This restriction leads to the possibility of the presence of hidden faults. Thus, it is possible that the position of the drive mechanism will be determined and transmitted to the cockpit, while the spherical head 13 will not be in a suitable position, e.g. due to undetected damage to the drive shaft 11. These hidden faults, including, among others, and malfunction of the drive shaft 11 that may affect the operational readiness of the aircraft, and therefore it is necessary to provide for certain regularity of measures on maintenance and repair in order to check the good functioning is of valves, what may be considered as prejudicing their operating aviation companies.

The solution would be to install on the spherical head 13 of the position sensors. However, the use of these sensors could cause the cables inside the fuel tank, and such cables inside the fuel tank may entail the risk of a short circuit.

In patent applications US 2003193310 and US 20055156550, as well as in Japanese patents JP 7280705 and JP 1121733 and Japanese patent application JP 19930349329 describes the various devices using specially designed microprocessors connected to the position sensors, or placed inside the actual engine, or on the drive shaft 14, or adjacent to it. Such solutions are recognized as complex and have a drawback, which is that it is necessary to increase the number of sensors and their power sources, which are attached near the fuel tanks.

In the present invention proposes a valve and a method for diagnosing operation of the valve during its operation to determine malfunction at the gate.

The valve of the fuel system of the aircraft includes a cylinder in the valve body, which can be attached to the fuel tubes, and said movable head, the chief is ensured around the axis of rotation in the above-mentioned valve body and rigidly connected with the first end of the drive shaft, driven in rotation by an electric drive mechanism. The head contains a through hole with an axis essentially perpendicular to the rotation axis, and has two stable positions of the two edges of the zone of rotation of the said head, such as:

in the first position of the head, the so-called "Open"position, the axis of the hole is oriented to ensure the flow of fuel through the tubes;

in the second position, the so-called "Closed"position, the axis of the hole is oriented to prevent the flow of fuel through the tubes.

According to the invention, the valve includes:

tools of education torque placed on one end of the secondary shaft rigidly connected with the head; and the means of education torque form of torque depending on the position of the head in the body of the valve is changed to the drive shaft, and can lead to an increase in current produced by the drive mechanism;

- means for determining the position located on the second end of the drive shaft opposite the first end, which is capable of feeding signals characterizing the provisions of the drive shaft.

Preferably the means of education torque and means for determining the position are such that, when proishodit the transition from the open position to the closed position, the torque is increased before it is defined closed position, and when there is a transition from closed to open position, the torque increases to be determined open position.

Training tools torque does not form a significant torque to the site, located close to two edges of the zone of rotation and form a torque, successively increasing from the site, located near each edge, to the edge.

According to a variant of the practical implementation of the invention the means of education torque contain:

disc rigidly connected with the secondary shaft from the free end containing at least one protruding structural element;

two are installed on the valve body bounding structural element,

disposable such that the at least one protruding structural element in contact with the bounding structural element when the head is essentially located in front of the open position, and that at least one protruding structural element in contact with the second restrictive element when the head is essentially located in front of the closed position.

Another is arianto practical implementation of the invention, the means of education torque contain:

disc rigidly connected with the secondary shaft from the free end containing at least one protruding structural element;

- one mounted on the valve body bounding structural element,

disposable such that the at least one protruding structural element in contact with the first side surface of the aforementioned restrictive structural element when the head is essentially located in front of the open position, and that at least one protruding structural element in contact with the second side surface of the aforementioned restrictive structural element when the head is essentially located in front of the closed position.

Preferably the means for determining the position producing at least one signal characterizing the open position and at least one signal characterizing the closed position.

According to a variant of the practical implementation of the invention means for determining the position include:

Cam rigidly connected to the drive shaft from the second end containing at least one protruding structural element;

at least one determinant exact position next to the speakers structural element located at each edge the zone of rotation,

so that at least one specifier position changes position under the influence of the speaker structural element.

According to another variant of the practical implementation of the invention means for determining the position contain at least two keys to position on each edge of the zone of rotation located so that, when a transition from the open position to the closed position, the first detection position signal characterizing the position mentioned drive shaft, before the second detection position, and when there is a transition from the closed position to the open position, the first detection position signal characterizing the position mentioned drive shaft, before the second detection position.

The invention also relates to a method of diagnosing operation of the valve of the fuel system during operation, in accordance with which to check the coherence of the control signal supplied to the drive mechanism to cause to turn head, with the signals produced by the means of education torque and means positioning (19), or detected non-coherency.

The invention also relates to a device for implementing the method. The device includes:/p>

- controls that can control the rotation of the electric drive mechanism and to record the signals generated by the means of education torque and means of detecting position;

- power, capable of flow necessary for the drive mechanism of the electric current;

- controls current, capable of measuring current and to analyze the current produced by the drive mechanism;

- maintenance tools capable of generating an alarm signal in case of malfunction of the valve.

A detailed description of the invention made with reference to the figures, in which:

- 1 (already mentioned) depicts a view in section of the fuel valve on the basis of the prior art;

- figure 2 represents a view in section of the fuel valve according to the invention;

- figure 3 represents a top view of the means of education of torque, connected to the fuel valve;

- figure 4 represents a view in analysis of educational tools torque connected with the fuel valve;

- figure 5 represents a view of the means of positioning connected with the fuel valve;

- 6 is a block diagram illustrating the determination device malfunction and containing the fuel valve according to the invention.

As of pokazanova 2, fuel valve 1 fuel system of the aircraft, according to the invention, comprises a drive mechanism 11 driven by at least one electric motor 12 connected to the gearbox. Motor drive mechanism 11 causes the rotation of the drive shaft 14, which is inserted into the fuel tank through a hermetic enter the tank wall. The drive shaft 14 at the first end 143 drives the spherical head 13.

The spherical head 13 is rigidly connected with the secondary shaft 131 and is introduced into the housing of the fuel valve 16 through the output shaft 131, which protrudes above-mentioned valve body. The spherical head 13 and the output shaft 131 is collected rigidly connected in rotation around the axis 132 inside the valve body 16.

The description of the present invention are given for the spherical head 13. This choice is not restrictive, and in practice, the head may have any other shape, therefore, it may be the surface of the body around the axis of rotation 132 such as, for example, a cylinder.

The valve body 16 contains two open edges of the end 161, to which are attached the fuel tube 17, having an essentially cylindrical shape and a diameter which is essentially smaller than the diameter of the spherical head 13. Two end 161 is essentially aligned with the axis 171 that p is essentially perpendicular to the axis 132.

The spherical head 13 includes a through hole 133-axis 134, which is essentially perpendicular to the axis 132. To ensure or prevent the passage of fuel between the two fuel pipes 17 the location of the holes 133 of the spherical head 13 relative to the two fuel tubes 17 by rotation of the spherical head 13 around the axis 132 between two stable positions:

- the first position of the head, the so-called open position providing for the flow of fuel, in which the axis of the holes 134 133 spherical head 13 and the axis 171 of the fuel tubes 17 are essentially coaxial;

the second position, the so-called closed position, blocking the flow of fuel, in which the axis of the holes 134 133 spherical head 13 and the axis 171 of the fuel tubes 17 are essentially perpendicular to each other.

Fuel valve 1, as shown in figure 3 and 4, contains, in addition, means 18 education torque.

The shaft 131 contains the end 135 that is accessible from the outer side of the valve body 16, the side 136 on which is mounted a disk 181, preferably, essentially the same diameter as the side of the shaft 131. The said disk includes on the outer peripheral surface 182, at least one protruding structural element 183.

Preferably, at least one vystupali the structural element 183 is a thickening of the disk 181, forming one and the same item.

According to the way of practical implementation, at least one protruding structural element 183 is formed having the shape of a truncated cone constructive element rigidly connected to the outer peripheral surface of the disk by a larger base.

Preferably the disk 181 is made of elastomer, and mentioned material should be chosen among durable and resistant to fuel materials.

Preferably the disk 181 contains all or part of the outer peripheral surface 182 of the sheet covering the mentioned outer peripheral surface to make the surface of the wear-resistant properties. Preferably the sheet is made from metal.

Sheet 181 is held rigidly United with the secondary shaft 131 by means of the covering metal sheet 185. To prevent relative movement between the said disk and the said secondary shaft coating metal sheet 185 includes means for locking 186, such as, for example, one blocking groove or one anti-rotation device.

Covering metal sheet 185 and the disk 186 is fastened to the said secondary shaft by means of the fastening element 187. As it follows from the example shown in figure 4, the fastening element is a bolt connected to the washer 188. The said bolt passes through the top sheet metal 185 and the disk 181 for lessons provisions in part with threaded 137, coupled with the said nut, made in the shaft 131.

Two restrictive structural element 189 is fastened to the valve body 16 by means of fastening, such as, for example, a screw.

At least one protruding structural element 183 is in contact (for a given angular position of the disk 181) with the first bounding element 189 and comes in contact (for the second given angular position of the disk 181) with the second restrictive element 189.

Two restrictive structural element 189 is placed so that when the spherical head 13 is in the open position, the at least one protruding structural element 183 disk 181 is in contact with the first bounding element 189, and when the spherical head 13 is in the closed position, the second protruding structural element 183 is in contact with the second restrictive element 189.

According to a variant implementation, shown in figure 3 and 4, for engagement restrictive structural elements 189 provisions, to the extent possible, remote with respect to axis 132, the disk 181 contains two in the coming structural element, having angular movement, to achieve the same result.

Preferably, the bounding structural elements 189 made of durable material, such as steel.

According to the way of practical implementation of restrictive structural elements 189 formed through the cylinder, one of the grounds which are rigidly connected to the valve body 16.

The disk 18, which is rigidly connected to the drive shaft 14 is a display position of the spherical head 13.

When the secondary shaft 131, is rigidly connected with a spherical head 13 will be given a rotary movement in a certain direction or to open or close the aforementioned spherical head through at least one of the engine 12, the said disk 181 at the same time will be given a rotary movement up until at least one protruding structural element 183 will not come into contact with restrictive constructive element 189. The result is the opposition that is reflected in the increase in torque on the drive shaft 14.

The zone of rotation of the spherical head 13, thus, is limited at each end by a gain of torque that is measured from the rising level of current produced by at least one motor 12.

Preferably, Velich is to gain torque is sufficient for the formation of a distinct and recurring impulse current, however, measures are taken to limit the torque on the control shaft to a reasonable level to avoid wear problems on the level of teeth of the gear drive mechanism.

Preferably, the torque change can be controlled by the level of deformation of the protruding structural elements 183 disk 181. Such smoothing of the deformation is carried out, for example, by changing the diameter of the disk 181 or changing the distance between the bounding structural elements 189 and the secondary shaft 131, is rigidly connected with a spherical head 13.

According to another variant implementation (not shown) one bounding structural element 189 is attached to the valve body 16, and at least one protruding structural element 183 comes into contact with the first side of the bounding structural element 189 at a given angular position of the disk 181 and the second side of the bounding structural element 189 when another predetermined angular position of the disk 181.

As shown in figure 5, the fuel injection valve 1 also includes means for determining the position 19 located inside of the drive mechanism 11. Mentioned means for determining the position contain the Cam 191, rigidly connected to the drive shaft a the level of the second end 141, located by the drive mechanism 11 and, thus, inside the fuel tank.

The Cam washer 191 on its outer peripheral surface 192 includes at least one protruding structural element 193, which results in an action for a given angular position of the Cam washer 191 determinant 195 angular position and which puts in place for another given angular position of the Cam washer 191 another determinant 195 angular position.

Two keys to position 195 and Cam washer 191 are positioned such that one of the determinants position 195 is actuated when the spherical head 13 is in the open position, and the other keys to position 195 is actuated when the spherical head 13 is in the closed position.

According to a variant implementation, presented in figure 5, to accommodate the determinants position 195 in the provisions, as more remote relative to the axis 132, the Cam washer 191 to achieve the same result contains two having angular movement of the protruding structural element.

Preferably, the protruding structural elements 193 represent thickening of the Cam washer 191, forming one and the same item.

According to the method of practicesmobilisation protruding structural elements 193 is formed having the shape of a truncated cone elements, which are rigidly connected to the outer peripheral surface 192 of the Cam washer 191 through a larger base.

According to the example of practical implementation of the reference position 195 are contact sensors, such as, for example, contact breakers, the lever 196 which comes into contact with one of the two protruding structural elements 193 of the Cam washer 191.

According to another example of the practical implementation of the determinants position 195 are proximity sensors, such as Hall sensors.

Determinants position 195 provide information about the position of the drive mechanism 11 of the valve 1 respectively.

Preferably, the means for determining the position 19 contain the second qualifiers position 197, placed near each determinant position 195.

Second, the determinants position 197 perform a dual role. On the one hand, when there is damage to the determinants position 195, the second identifiers of the provisions of the act as subsidiary means for the return signal characterizing the position of the drive mechanism 11. On the other hand, when there is damage to the drive shaft 14, the latter determinants position 197 is used as a means of warning about exceeding the zone of rotation of the drive mech the mechanism.

According to another example implementation, the second reference position 197 are proximity sensors, such as Hall sensors. Due to the fact that they are non-contact, the second qualifiers position 197 are more reliable.

The fuel valve is preferably installed in the device 20 of failure detection, which is depicted in the schematic view of figure 6. The said device comprises means 21 of the control is able to operate at least one of the engine by means of 22 supply.

The beginning of the rotational movement of the spherical head 13 is carried out according to the command generated by the means 21 of the control depending on the signals received by other systems (not shown), and (or) by the governing body, which is driven by the crew, such as the contact breaker, which is located in the cockpit of the aircraft.

After running out of commands means 21 of the control information bus 24 transmit signal means 22 provide power, and the means of supply are feed power cables 29 of the electricity distribution grids 25 DC power supply, at least one motor 12.

Powered by at least one engine 2 imparts a rotational movement of the drive mechanism 11 (rotation is essentially a quarter turn in a given direction), the drive shaft 14, which, in turn, results in movement of the spherical head 13 to ensure its translation from the open position to the closed position and Vice versa.

Means 22 provide power to contain, in addition, means 26 of the control current, which allow you to measure amperage and analyze current generated at least one engine.

After detecting means 26 current control boost current, which is seen as strengthening the torque generated by the means 18 education torque, produced the first signal or the so-called prior stop signal, at least one engine.

In normal operation, when the means 21 management team serves on the location of the spherical head 13 or the open position or in closed position, is supplied with current, at least one motor 12, mounted near the drive mechanism 11. Mentioned drive mechanism causes the rotation of the drive shaft 14, which, in turn, imparts rotational movement of the spherical head 13, is rigidly connected with the means of education torque 18. The spherical head 13 is rotated around the axis until, until, at least one protruding structural element 183 disk 181 will not come into contact the CT with restrictive constructive element 189. This contact causes a resistance which counteracts the rotation of the spherical head and leads to an increase of torque on the drive shaft 14, which is expressed in impulse current generated at least one motor 12. When determining the impulse current funds 21 management develop a preliminary signal to stop, at least one engine. At least one motor 12, which continues to be energized, actuates the drive shaft 14 to until at least one protruding structural element 193 of the Cam washer 191 means of determining the position 19 actuates keys to position 195. Then, a second signal or a so-called interrupt signal power of at least one of the engine 12 is supplied to the means 21 controls that stop the power supply, at least one motor 12, which leads to the stop of rotation of the drive shaft 14 and the spherical head 13 or the open position or closed position depending on the team that developed the means 21 of the control.

From the analysis of the normal operation of the fuel valve 1, it follows that the signals associated with the boost current is considered as the gain of the torque generated by the means 18 education torque, and comprising the receiving identifiers provisions produced by the means 19 positioning, in accordance with precise logic, described previously.

The basic defect of such a fuel valve 1, which include:

- lock the spherical head 13;

- breakage of the drive shaft 14;

- malfunction of the drive mechanism 11,

affect the above-mentioned signals, resulting, in particular, is no longer met, the logical schema, ensuring the good functioning of the fuel valve 1.

Thus, any non-coherency identified in the signals produced by the means 18 education torque and means 19 positioning, registered means 21 management, and first means 21 of the control is generated, and then on the data bus 24 control means 27 is transmitted fault message.

According to the practical implementation of any information needed by the staff, making maintenance and repair, to identify the malfunction, including, for example, information about which component is faulty, and available before the production of the repair time depends largely on the criticality of the fuel valve 1, are stored in the tool 28 maintenance.

Fault identifiers provisions 195

<> The determination device malfunction, according to the invention may, for example, to detect a malfunction of the determinants position 195 using the second identifier position 197.

After determining the boost current is supplied to the first signal, and the drive shaft 14 continues its rotation. If the determinants position 195 is faulty and does not serve due to this, the signals of the means 21 of the control, the drive shaft 14 continues to make its rotation by an additional fraction of a degree up until at least one protruding structural element 193 of the Cam washer 191 means 19 positioning will not be determined by the second reference position 197. In the situation mentioned second identifiers provisions replace the first mentioned determinants position and the signals of the means 21 controls which interrupt the power supply, at least one of the engine 12. Referred to controls transmit the message, maintenance-t, for example, type "fault contact breaker"means 28 provide technical services for action by replacing the defective determinants position 195. Information about the presence of such faults determinants position 195 does not lead to immediate decommissioning aircraft apparatly valve 1, thus, can be used as the spherical head 13 continues to effectively rotate, and the second qualifiers position 197 temporarily replace the determinants position 195.

Motor failure

According to another case of a malfunction, when the command received from the means 21 of the control is not applied, no current, at least one motor 12, the power supply of said at least one engine stops. Such a failure is considered as damage to at least one of the engine 12, and in this connection provides for the implementation of actions on maintenance and repair, aimed at replacing the motor of the drive mechanism 11. Depending on the criticality of the fuel valve maintenance and repair are planned for a longer or shorter period.

A bearing failure and (or) gear

According to another case of malfunction in case of detection means 26 controls the current cyclical deviations from the norm (if the mentioned deviations from the norm periodically repeated each time bringing into rotation of the drive shaft 14) these deviations from the norm are seen as a sign of incipient faults at the level of the bearing and / or gear such as the R, damage to the gear reducer.

The fault at the level of the drive shaft

According to another occasion faulty when unable to determine no impulse current, and means 19 determine the position of the transmit signal to interrupt the power supply, the non-coherency is considered as a deviation from the norm at the level of the drive shaft 14.

No refund of torque, which is expressed in the absence of the stimulus current level of 26 current control allows you to provide means 21 controls the information that the drive mechanism 11 is rotated around the axis in accordance with the commands that were submitted means 21 of the control, and the spherical head 13 remained in the previous, prior to receipt of the command position.

Indeed, due to the fact that the spherical head 13 is not rotating, at least one protruding structural element 183 disk 181 means 18 education torque is not included in the bounding structural elements 189, and thus not detected any opposition to the motion when the driving mechanism 11 is approaching the position-controlled means 21 of the control. In the absence of a return torque means 21 of the control signal is not detected by the interruption of the power supply, and the drive shaft 14 continues to rotate is about as long while at least one protruding structural element 193 of the Cam washer 191 detection tools 19 is driven in one of two qualifiers position 195. Under these conditions, the reduction in the movement of the determinants position 195 is considered as the first additional signal, and feeding at least one motor 12 is interrupted as soon as at least one protruding structural element 193 is detected by the second reference position 197. Further means 21 of the control message is sent to the means 28 maintenance to prevent loss of motion of the spherical head 13 and to plan actions for immediate maintenance and repair. Thus, the crew immediately becomes aware of the nature of the problem. Outdoor gap of the drive shaft 14 must entail the replacement of the valve until the next flight.

The blocking valve

According to another occasion faulty when funds 21 control register strong impulse current, but do not receive funds from 19 positioning any information about the position of the drive shaft 14, can be considered such deviations from the norm, as jam or icing of the spherical head 13 due to the presence of ice in the fuel tubes 17. In tokyotower obviously, that at least one engine 12 applies torque, however, the drive shaft 14 is not rotating. Recognition of fault and identify the presence of ice from other conditions Troubleshooting method is to enable a means 21 of the control algorithm is able to record in a storage device that retains information when power is turned off, the detected phenomena affecting the bearings or gear or other parts of the valve. Thus, if no subsequent mechanical failure is not confirmed, the presence of ice in the fuel tubes 17 is the most likely cause of the blocking valve.

Among the ways to raise doubt in the presence of ice as the cause of the blocking valve, preferably initiated attempts the relative movements of the spherical head 13. Mentioned attempts to confirm the presence of ice, if the spherical head remains stationary. Another solution is to check the valve when the fuel temperature reaches a temperature sufficient to ensure that no more water in the state of aggregation of ice. If such actions prove it, the case is recorded in the memory means 28 maintenance, and goes with benie on the implementation of actions on maintenance and repair, such as checking for the removal of water in the tank.

1. Valve (1) fuel system of the aircraft includes a cylinder (13) in the housing (16) of the valve is configured to be attached to the fuel pipe (17), and head (13) is movable, is rotated around the axis (132) in the valve body and rigidly connected with the first end (143) of the drive shaft (14)driven in rotation by an electric drive mechanism (11), and the head contains a through hole (133) with the axis (134) and has two stable positions, on the two ends of the zone of rotation of the head, such as:
in the first position of the head, the so-called open position, the axis (134) holes (133) is aimed to ensure the flow of fuel through the tubes (17);
in the second position of the head, the so-called closed position, the axis (134) holes (133) is oriented to prevent the flow of fuel through the tubes (17),
characterized in that the valve (1) contains:
training tools torque (18)located at one end (135) secondary shaft (131), rigidly connected to the head (13), with the means of education torque form the torque on the drive shaft (14), which depending on the position of the head (13) in the housing (16) of the valve is changed, and made with the possibility to increase the current generated by p is wodnym mechanism (11);
means for determining the position (19)located at the second end (141) of the drive shaft (14), opposite the first end (143), and performed with the opportunity to signal characterizing the position of the drive shaft.

2. Valve (1) according to claim 1 in which the means of education torque (18) and means for determining the position (19) are arranged so that, when moving from the open position to the closed position, the torque increases to be defined closed position, and when a transition from the closed position to the open position, the torque increases to be determined open position.

3. Valve (1) according to any one of the preceding paragraphs, in which the means of education torque (18) does not form a significant torque to the site, located near the two ends of the zone of rotation, and form a torque gradually increasing from the site, located near each end, to the end.

4. Valve (1) according to claim 3 in which the means of education torque (18) contain:
drive (181), rigidly connected with the secondary shaft (131) from the free end (135)containing at least one protruding structural element (183);
two restrictive design the active element (189), installed on the housing (16) of the valve
located in such a way that at least one protruding structural element (183) in contact with the bounding element (189)when the cylinder (13), essentially located in front of the open position, and at least one protruding structural element (183) is in contact with the second restrictive element (189)when the cylinder (13), essentially located in front of the closed position.

5. Valve (1) according to claim 3 in which the means of education torque (18) contain:
drive (181), rigidly connected with the secondary shaft (131) from the free end (135)containing at least one protruding structural element (183);
one restrictive structural element (189) mounted on the housing (16) of the valve
located in such a way that at least one protruding structural element (183) in contact with the first side surface bounding structural element when the cylinder (13), essentially located in front of the open position, and at least one protruding structural element (183) is in contact with the second side surface bounding structural element (189)when the cylinder (13), essentially located in front of the closed position.

6. Valve (1) according to claim 3 in which the means for determining the position of (19) is produced, at least one signal characterizing the open position, and at least one signal characterizing the closed position.

7. Valve (1) according to claim 6, in which means for determining the position (19) contain:
Cam (191), rigidly connected to the drive shaft (14) from the second end (141)containing at least one protruding structural element (193);
at least one detection position (195), essentially next to the speakers constructive element (193), located at each end of the zone of rotation so that at least one specifier position (195) changes position under the influence of the speaker structural element (193).

8. Valve (1) according to claim 7, in which means for determining the position (19) contain at least two key provisions (195, 197) at each end of the zone of rotation located so that, when a transition from the open position to the closed position, the first detection position (195) sends a signal characterizing the position of the drive shaft (14), before the second detection position (197), and when there is a transition from the closed position to the open position, the first detection position (195) sends a signal characterizing the position of the drive shaft (14), before the second detection position (197).

9. How di the Gnostics operation of the valve (1) according to any one of claims 1 to 8 during operation, which checks the coherence of the control signal supplied to the actuator (11) to cause to turn the head (13), with the signals produced by the means of education torque (18) and means positioning (19), or find non-coherency.

10. The device, containing:
control means (21) by the rotation of the electric drive mechanism (11) and reception of signals generated by the means of education torque (18) and means of detecting the position (19) of the valve (1) according to any one of claims 1 to 8;
money supply (22) power drive mechanism (11);
controls current (26) measure amperage and analysis of the current produced by the drive mechanism (11);
tool maintenance (28)that generates the alarm signal in case of malfunction of the valve (1)when it encounters non-coherency between the control signal supplied to the drive mechanism (11) for imparting rotation to the cylinder (13), the signals produced by the means of education torque (18) and means for determining the position (19).



 

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Ball valve // 2465504

FIELD: machine building.

SUBSTANCE: ball valve includes housing consisting of lower nipple part and upper coupling part, which are connected to each other by means of cylindrical thread. Ball with a central hole is installed in the bore of lower nipple part of housing with possibility of rotation. Spindle in the form of stepped bushing is arranged coaxially to ball in lower nipple part of housing with possibility of rotation. Longitudinal slot is made on side surface of ball on the spindle side symmetrically to diametral plane and perpendicular to central hole of the ball. Projection is made on inner edge of spindle and interacts with the above longitudinal slot. Upper and lower seats interact with the ball. Elastic deformable element pressing the seats to the ball in the form of a ring from elastomer is installed in the bore of the housing. Ball turning limit stop is fixed in the wall of lower nipple part of housing coaxially to the ball. The above limit stop is made in the form of a ring with projection on external surface, the lateral edges of which are mutually perpendicular. Symmetry axis of its lateral edges is located at an angle of 45° to longitudinal axis of housing and directed downwards. Spindle is arranged in the bore of ball turning limit stop. Recess is made on side surface of the ball on the spindle side above longitudinal slot. Lateral edges of the recess are parallel and axisymmetrical to longitudinal slot of the ball, and when the ball is turned through 90°, they interact with lateral edges of ball turning limit stop.

EFFECT: improving operating reliability and safety of the ball; enlarging its operating capabilities.

6 dwg

Valve with filter // 2464471

FIELD: machine building.

SUBSTANCE: valve with filter includes body 1 with ball gate valve 6, inlet 2 and outlet 3 coupling branch pipes located on one axis on opposite sides, filtration chamber 5 located radially relative to axis of inlet 2 and outlet 3 branch pipes, plug 9 and filtering element 10 in the form of a bushing. Clear gap of cavity of body 1 between inlet 2 and outlet 3 coupling branch pipes is shut-off with dividing cross connection 11. Filtration chamber 5 has annular centring element 13 adjacent to one of end parts 12 of filtering element 10 and passing along dividing cross connection 11 and part of body in the zone of inlet 2 branch pipe, in the centre of which inlet hole 14 is located. Plug 9 is fixed in filtration chamber 5 and provided with annular centring element 15 that is adjacent to the second end part 16 of filtering element 10. Annular centring elements 13, 15 and filtering element 10 are located on one and the same axis crossing the location axis of inlet 2 and outlet 3 branch pipes at right angle. Ball gate valve 6 is provided with guide opening 18 and installed in body 1 between dividing cross connection 11 and inlet 2 branch pipe with possibility of being turned manually through right angle. Inner side walls 23 of filtration chamber 5 are located at some distance from external surface 24 of filtering element 10 for formation of annular cavity 25 located around filtering element 10 and interconnected with cavity 26 of outlet coupling branch pipe 3 by means of discharge channel 27. Side surfaces of discharge channel 27 are located at sharp angle to axis of inlet 2 and outlet 3 branch pipes, the vertex of which faces the direction from inlet 2 branch pipe to outlet 3 branch pipe.

EFFECT: enlarging the number of means of shutoff and water purifying valves for pipelines, which provide high purification degree in compliance with the parameters specified with filtering element owing to reducing the probable penetration of filtered particles through filtering element.

7 cl, 2 dwg

Ball valve // 2447347

FIELD: machine building.

SUBSTANCE: body of a valve from synthetic material comprises a bearing structure. The bearing structure comprises a ball of a valve with a through hole, two support rings arranged oppositely to each other and one connecting element that connects the specified support rings. The bearing structure fully separates the valve ball from the synthetic material of the casing. The specified bearing structure is enclosed into a shell from the synthetic material of the specified casing, formed during casting of this casing, and comprises fixing supports made in the specified connecting element having the cylindrical shape. Support rings are arranged at the previously determined distance from each other to form a gap between a valve ball and support rings, which are fixed in the specified position. Areas of contact of support rings with a cylindrical connecting element are fused or adhered.

EFFECT: simplified manufacturing and improved tightness of a ball valve in a casing of synthetic material.

19 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: group of inventions refers to tightness tests of ball valves of multi-purpose accessories (MPA) of main. The procedure for check of ball valve tightness of multi-purpose accessories of mains consists in connection of a drain tube to a cavity of the checked valve and in measurement of static pressure in pipelines of high and low pressure in the main, and also in the cavity of the ball valve. Also, successively in time, first the low pressure pipeline of the main is connected with the drain tube; under the set mode there is measured flow rate of transported medium downstream through the first packing of the ball valve. Further, the high pressure pipeline is connected and flow rate is measured through the second packing of the ball valve. Finally, there is measured summary flow rate of transported medium running through the first and second packing of the ball valve. There are compared values of measured summary flow rate with sum of earlier measured values of flow rates. If summary flow rate is not equal to sum of earlier measured values of flow rates, there is diagnosed leak of transported medium through the ball valve into atmosphere. There are disclosed versions of devices for check of tightness of the ball valve of multi-purpose accessories.

EFFECT: upgraded accuracy of measurements of gas flow rates due to direct measurements of gas flow rates though each packing of MPA downstream of gas; evaluation of gas flow rate leaking to atmosphere.

15 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: procedure consists of assembly of two coupled semi-cases with plug and seat, in boring aperture for flange installation and in welding flange around circumference to edge of bored aperture. An additional recess is made in an upper journal of the plug. Boring of the matching bore for installation of the flange is preliminary made in two coupled semi-cases of the valve. Diametre of the matching bore is 1-2 mm bigger, than matching diametre of the flange. The plug and the seat with associated elements are installed in the case of the global valve. The coupled semi-cases are inter-tightened providing a welding gap along perimetre of a locking seam. The locking seam is welded; the flange is assembled upon case cooling. The flange is fixed in process accessories. Axis of process accessories maximally coincides both with axis of the plug and axis of the flange. Process accessories with the attached flange are arranged in the recess of the upper journal of the plug. Thus fitted flange is tack welded to the case of the global valve in several points. Further bottom run is welded. The process accessories are removed and the seam is finally welded. When the case is cooled, the global valve is finally assembled with installation of a spindle and sealing with associated elements.

EFFECT: increased service life of global valve and its reliability during operation, reduced total labour input for assembly.

3 dwg

FIELD: medicine, fire fighting equipment.

SUBSTANCE: valve for piping of fire extinguishing systems containing inlet device supplying with fire-extinguishing liquid under high pressure, outlet for fire-extinguishing liquid, located between the inlet and outlet shutoff valves and actuating devices for switching shutoff valves in open/closed position while at rest shutoff valves are in closed position and in case of fire an actuating devices switches shutoff valves from a closed position into an open position so that fire-extinguishing liquid from the inlet to the outlet. In order to maintain without loss of fire-extinguishing liquid it is suggested that there will be a possibility of switching into maintenance mode from closed position by means of actuating devices.

EFFECT: no leakage of fire extinguishing fluid from the inlet to the outlet in maintenance mode.

13 cl, 7 dwg

Multipurpose valve // 2382924

FIELD: machine building.

SUBSTANCE: invention relates to field of armature engineering and is provided for parametres regulation of flows of working mediums in equipment of gas, oil, chemical, energy, metallurgical and coal industry. Multipurpose valve contains casing with inlet and outlet fittings, drive, sphere rotary gate with passage opening and shutoff part, saddle of sphere rotary gate with thickening surfaces. In passage opening of sphere rotary gate there are located throttling elements. Eight equispaced by circumference of passage opening, throttling elements allows in section perpendicular to axis of passage opening shape of isoscales triangle with 90° vertex. Vertex is directed to axis of passage opening. Four of mentioned throttling elements are stationary. The other four are located between them with ability of displacement in the direction of axis of passage opening. Value of this displacement is equal to leg of triangle of immovable throttling element.

EFFECT: invention provides increasing of regulation reliability in abrasive-carrying flow of working medium ensured by de-turbulising operation of configuration of passage opening with ability of leak-free shutoff of valve independently of wear of throttling elements.

4 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: valve can be used in the capacity of multipurpose member during pipeline transportation of gas, oil, water and other liquids and gaseous materials. In valve body nearby abutment lip it is implemented annular groove, connected by openings to inner cavity of valve. Valve seat is installed in cylindrical counterbore with restricted axial and radial clearances between abutment lip of casing and smooth cross-cut surface of reciprocal conjunctive flange. Seal face of seat matches to globular convex seal face of segment. Butt of seat is implemented as beveled. Self-sealings are installed at external surface of seat end, removed from abutment lip of casing, with sealing element at the butt, contacting to smooth face surface of abutment lip of body. Driving shaft is implemented end block with reduced cross-sectional area between mounting surfaces for installation of segment and is installed perpendicularly to central axis of valve and is shifted relative to valve axis. Into clearance between body and driving end of shaft it is installed sealing device, implemented with ability of continuous pressing to bearing sleeve. Into gap between casing and free end of shaft it is installed compaction, installed with ability of preload.

EFFECT: increasing of valve tightness at interlocking of flow, improvement of reliability, manufacturability and accuracy of manufacturing.

5 dwg

FIELD: machine building.

SUBSTANCE: invention is intended for use in pipeline systems of oil- and gas pipelines, water supply and multitude of other hydraulic units. Globe valve contains casing with one or two covers with channels for liquid passing, sphere valve with pass and controlling spindle, floating between two saddles from elements with high and low rigidity, located in covers and casing in joints of channels to gate. Rigid element of saddle is implemented in the form of ring from rigid and strong material with antifriction properties on surface of contact to gate and is installed without initial tightness by gate. Soft element of saddle is located on external surface of rigid element and is implemented in the form of flange collar. Blade of each collar allows tightness by sphere valve. Flange part of collar is located with diametral tightness in enveloping it housing or cover boring.

EFFECT: invention is directed to multiple increasing of permissible diametres of passes and pressure difference of liquid and also to increasing of work resource of globe valve with floating gate at simultaneous reduction of labour-intensiveness of manufacturing and moment on controlling spindle.

1 dwg

FIELD: machine building.

SUBSTANCE: network systems includes the following: many additional valve monitoring devices (VMD) (11). Each monitoring device (11) is attached to ball valve (1) and includes the following: sensor of ball valve state; wireless communication unit of narrow working range for transmission of the state as perceived with the above sensor, and for transmission of the state as perceived together with identification of the above device to one or more readout devices (18) of valve devices (VRD), which are located within the above narrow working range; mechanism for attachment of additional VMD to monitored ball valve in the way, which does not disturb the normal functioning of the valve; one or more readout devices of valve devices (VRD) to receive the transmission of valve state and identification of VMD of the above valve monitoring devices (VMD) and for submission of transmission of the valve state to server (21) via Ethernet (25). There is additional valve monitoring device (VMD) operated from storage battery, which is attached on the outer side to available ball valve to monitor the state of ball valve.

EFFECT: furnishing of ball valve with monitoring device that has low cost.

20 cl, 10 dwg

FIELD: machine building.

SUBSTANCE: valve assembly includes valve body forming a fluid medium flow channel. Valve sealing housing is arranged in fluid medium flow channel and provided with possibility of functioning between open position allowing the flow passage and closed position not allowing the flow passage. Valve stock has a free end and an interacting end. The latter interacts with valve sealing housing so that rotation of valve stock can control the valve sealing housing between open and closed positions. Measuring channel passes through the valve stock from free end to the interacting end. Thus, measuring channel is in connection of fluid medium to fluid medium channel at least when it is open. Note that at least one sealing element is located inside the measuring channel. Valve stock assembly is described.

EFFECT: lower cost and easier assembly.

20 cl, 16 dwg

FIELD: construction.

SUBSTANCE: position sensor for a valve controlled by means of a drive comprises a casing and a rotary driven lever. The casing bears one component of the group. This group comprises a magnetic flow sensor and a source of a magnetic flow for detection of magnetic field variances that occur as a result of relative displacement of the magnetic flow sensor and the magnetic flow source. The rotary driven lever bears another component from the specified group providing for relative displacement of the magnetic flow sensor and the magnetic flow source. In the rotary driven lever there is one element of the group comprising an inclined surface and a contact element, to ensure movable contact with another element of the specified group, available on the movable component of the specified valve. The rotary driven lever is connected to the casing as capable of rotation relative to it. There is a unit of a position sensor and a version of a position sensor design for the valve.

EFFECT: improving position sensor reliability.

22 cl, 7 dwg

FIELD: equipment for firefighters.

SUBSTANCE: mask installation with the ventilator contains the exhalation valve located on the fore part of the front cover is made to be moved towards opening position during exhalation and towards closing position during inhalation, the inhalation valve located on the fore part of the front cover is made to be moved towards closing position during exhalation and towards opening position during inhalation; the mask is equipped with the ventilator driven by the electric motor, the ventilator control sensor closely located to the exhalation valve and it determines the exhalation valve motion position during the inhalation without interacting with the exhalation valve and generates the signal; the installation comprises the warning sensor which determines the exhalation valve motion position in the cases when the pressure in the front cover is lower than the external atmospheric pressure during the air inhalation it signals about the above without interacting with the valve; the warning device works in correspondence with the signal of the warning sensor; the ventilator control sensor and warning sensor comprise the contactless sensor which monitor the exhalation valve status.

EFFECT: invention ensures convenience of application.

3 cl, 10 dwg

FIELD: machine building.

SUBSTANCE: procedure for identification of valve position consists in application of identification code on section of surface. The identification code corresponds to a sequence of marks. The marks are oriented along line of marking. Automated recognition of marks is ensured with the code. A pulse signal is generated at reading the identification code. The signal differs depending on direction of identification code reading. The pulse signal is converted into a digital binary code. The latter is compared with a reference; a position of the valve is identified at matching obtained digital code and reference.

EFFECT: upgraded measurement accuracy of rotation angle of rod.

4 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: valve consists of case, seat, of shut-off element, rod, spring, packing element, additional spring, washer, two permanent magnets, two magnet conductors, spacer and throttle. Upper and lower magnetic conductors are located on both sides of the washer. The upper one is made in form of a plug and is screwed into the case. The throttle corresponds to a disk in a through channel of the seat and is rigidly connected to the shut-off element. The latter corresponds to a disk. The disk consists out of two plates with a circular chamber between them and is conjugated with a radial gap with the through channel of the seat. The packing element is made in form of a ring of round cross section and is positioned in the chamber with gaps along axis of the valve; it performs free radial travels. The chamber is communicated with space under the shut-off element. The spacer rests against a movable upper magnetic conductor by means of a hollow cover and the spring ring. The bush is screwed into the cover. A pin is set into the latter. The pin is connected with an end of the rod and has a disk permanent magnet on its end. The permanent magnet is conjugated with two position sensors. The sensors turn on magnetically operated sealed switches. The latter are spaced by height within the length of rod run. The disk magnet is compressed in a sleeve between sets of adjusting washers and magnetic conductors.

EFFECT: reliable valve of considerable resource, efficient in operation and serviceable.

2 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: control system consists of control valve, of valve controller, of control line, of supporting component, of two pressure gauges, of logic, of processor, and of storage for recording threshold rate of change. The valve controller consists of two pressure gauges and is connected to a pneumatic actuator of the valve and to a solenoid valve for testing the valve actuator and solenoid valve under the on-line mode. To test the solenoid valve the valve controller measures pressure at various ports of the solenoid valve by actuating the solenoid valve for a very short period of time. The valve controller determines complete operability of the solenoid valve by derivative of difference between measured pressure signals, i.e. basing on rate of change of difference of measured pressure signals in time.

EFFECT: raised reliability of system functionality.

15 cl, 4 dwg

Flow control valve // 2406000

FIELD: machine building.

SUBSTANCE: valve comprises case having through channel and tap arranged at the angle to through channel. In through channel there is a throttle device, having throttle element actuated via tap, and two points of measurement to measure pressure in through channel along both sides of throttle device. Each point via channel of pressure measurement is connected to hole for measurement of pressure at least one pressure measurement channel passes through bend.

EFFECT: possibility to expand capabilities in part of flow control valve layout.

12 cl, 3 dwg

Ball transducer // 2399822

FIELD: machine building.

SUBSTANCE: ball transducer consists of removable unit including circular chamber, flow swirler, rod-displacer, ball and additional restriction. Further, the ball transducer consists of a permanent unit including a case with a cover and with an inlet and outlet branches, also of a signal recording unit positioned on the cover.

EFFECT: reduced diametre of ball motion orbit and thereby reduced speed of ball motion diminishing contact force effecting ball; also reduced length of ball run for service life which increases operation life of removable unit.

5 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: invention can be implemented for testing multi-purpose accessories (MPA) of main (M). The essence of the invention is as follows: a draining tube (DT) is connected to inter-cock cavity of the ball cock and to pipelines of high and low pressure (HPP and LPP) via pulse tubes of high and low pressure (HPPT and LPPT). An electro-magnet valves (EMV) are installed in the HPPT and LPPT, while a reverse flow metre is installed in the DT. The reverse flow metre and outlets of pulse tubes are communicated with atmosphere via a pneumatic crosspiece. Controlled inputs of the EMV are coupled to the output of the server via an analogue-digital converter. The output of the flow metre is connected to the input of the server via the analogue-digital converter. The system facilitates measuring gas leaks through the first and the second sealing down gas stream at the ball cock of the MPA by means of the reverse flow metre under the automatic mode.

EFFECT: upgraded accuracy of measurements of gas leaks and automation of measuring process.

5 cl, 3 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

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