CN113236624B - Working mode conversion device and pressure selection valve - Google Patents
Working mode conversion device and pressure selection valve Download PDFInfo
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- CN113236624B CN113236624B CN202110667853.0A CN202110667853A CN113236624B CN 113236624 B CN113236624 B CN 113236624B CN 202110667853 A CN202110667853 A CN 202110667853A CN 113236624 B CN113236624 B CN 113236624B
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- 238000006243 chemical reaction Methods 0.000 title abstract description 9
- 230000001960 triggered effect Effects 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000000806 elastomer Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The embodiment of the invention provides a working mode switching device and a pressure selection valve, wherein the device comprises the pressure selection valve and the switching valve; the pressure selection valve includes: a solenoid valve and a first check valve; the second interface is connected with the liquid outlet of the first one-way valve; the third interface is connected with an input interface of the switching valve; the liquid inlet of the first one-way valve is used for connecting a hydraulic source; when the circuit interface is powered on, triggering and blocking the communication between the first interface and the third interface, and triggering the second interface to be communicated with the third interface; when the circuit interface is not powered on, the communication between the second interface and the third interface is triggered to be blocked, and the first interface and the third interface are triggered to be communicated. The scheme provided by the embodiment of the invention can provide continuous and stable power for the conversion valve under the condition of no hydraulic power.
Description
Technical Field
The invention relates to the technical field of hydraulic pressure, in particular to a working conversion device and a pressure selection valve.
Background
The hydraulic transmission is a transmission mode for transmitting and controlling energy by taking fluid as a working medium, and has the advantages of large output force, compact structure, small volume, convenient speed regulation, easy control and the like compared with electric transmission and mechanical transmission, so that the hydraulic transmission is widely applied to airplanes.
The hydraulic transmission applied on the aircraft is a transmission mode that oil liquid is used as a working medium on the aircraft, and the load executing mechanism is driven by the oil pressure to complete specific operation; in the prior art, the working principle of hydraulic transmission applied to an airplane is as follows: in the flight process of the aircraft, the hydraulic source can provide power for the switching valve connected with the main working oil way in real time, and the main working oil way drives the actuating load mechanism of the control surface to rotate so that the aircraft can fly normally. Based on the working principle of the hydraulic transmission of the aircraft, the situation that the supplied high pressure is lost due to pressure fluctuation of the hydraulic source possibly exists, but under the situation that the high pressure is lost, the hydraulic source cannot provide power for the switching valve, so that a main working oil way connected with the switching valve cannot keep continuous normal operation, and in order to keep the normal flight of the aircraft, the influence of the pressure fluctuation of the hydraulic source on the aircraft is removed, and a device capable of providing continuous stable power for the switching valve is needed.
Disclosure of Invention
The embodiment of the invention aims to provide a working conversion device and a pressure selection valve, which are used for solving the problem that continuous and stable power can be provided for a conversion valve under the condition of no hydraulic power.
The specific technical scheme is as follows:
an operating mode switching device, the device comprising: a pressure selection valve and a switching valve;
the pressure selection valve includes: a solenoid valve and a first check valve;
the switching valve includes: the device comprises an input interface and a working interface used for being connected with a main working pipeline, wherein when the input pressure of the input interface is larger than a preset threshold value, the main working pipeline connected with the working interface is triggered to be communicated, and when the input pressure of the input interface is not larger than the preset threshold value, the main working pipeline connected with the working interface is triggered to be blocked;
the electromagnetic valve is provided with a first interface, a second interface, a third interface and a circuit interface;
the first interface is used for being connected with a box body for providing working media;
the second interface is connected with the liquid outlet of the first one-way valve;
the third interface is connected with an input interface of the switching valve;
the liquid inlet of the first one-way valve is used for being connected with a hydraulic source;
the circuit interface is used for connecting a power supply, and when the circuit interface is powered on, the first interface and the third interface are triggered to be blocked from being communicated, and the second interface and the third interface are triggered to be communicated;
when the circuit interface is not powered on, the communication between the second interface and the third interface is triggered to be blocked, and the first interface and the third interface are triggered to be communicated.
Further, the number of the first one-way valves is larger than one, and the liquid inlet of each first one-way valve is used for being connected with one hydraulic source.
Further, the number of the first check valves is one.
Further, the switching valve includes: valve housing, valve core and elastomer;
the valve pocket is the hollow structure of both ends confined, be equipped with two pairs of work interfaces that are used for the intercommunication on the lateral wall of hollow structure main working pipeline, wherein, every pair of work interface includes: a fourth interface and a fifth interface;
the valve core is arranged in the cavity of the valve sleeve, an elastic body is fixedly arranged at the first end of the valve core, and the second end of the valve core is used as the input interface to penetrate through the closed end of the valve sleeve and is connected with the third interface;
when the input pressure of the second end is larger than a preset threshold value, each pair of working interfaces are triggered to be communicated;
and triggering the valve core to block each pair of working interfaces from communicating with the main working pipeline when the input pressure of the second end is not greater than a preset threshold value.
Further, the elastic body is a spring.
Further, the valve core is of a rod-shaped structure, and two shaft shoulders are respectively arranged on the rod-shaped structure;
the apparatus further comprises: an actuation assembly;
the actuation assembly includes: the wall hole type centering actuating cylinder, two second one-way valves and a piston rod;
the piston rod is provided with a shaft shoulder;
the cylinder arm of the wall hole type centering actuating cylinder is provided with two sixth interfaces and a centering pipeline interface for connecting the box body, and the centering pipeline interface is positioned between the two sixth interfaces;
the piston rod is arranged in the wall hole type centering actuating cylinder cavity;
each sixth interface corresponds to one fifth interface and one second one-way valve, each sixth interface is respectively connected with one fifth interface and one liquid outlet of the second one-way valve, and a liquid inlet of each second one-way valve is connected with the box body;
when the input pressure of the second end is greater than a preset threshold value, the shaft shoulder of the piston rod can move along the wall hole type centering actuating cylinder under the action of the pressure output by the main working pipeline of the fourth interface;
when the input pressure of the second end is not greater than a preset threshold value, the shaft shoulder of one valve core corresponds to one fourth interface, the shaft shoulders of each valve core are triggered to correspond to and seal one fourth interface, and if the external load direction born by the piston rod points to the return pipeline interface along the axial direction of the piston rod, the shaft shoulder of the piston rod is triggered to seal the return pipeline interface.
Further, a pair of loop interfaces are provided on the end side wall, the pair of loop interfaces comprising: a seventh interface and an eighth interface; the end side wall is a side wall between the closed end of the hollow structure and a shaft shoulder adjacent to the valve core;
the return pipeline interface is connected with the seventh interface, and the eighth interface is used for connecting the box body.
A pressure selection valve, the pressure selection valve comprising: a solenoid valve and a first check valve;
the electromagnetic valve is provided with a first interface, a second interface, a third interface and a circuit interface;
the first interface is used for being connected with a box body for providing working media;
the second interface is connected with the liquid outlet of the first one-way valve;
the third interface is connected with an input interface of the switching valve;
the liquid inlet of the first one-way valve is used for being connected with a hydraulic source;
the circuit interface is used for connecting a power supply, and when the circuit interface is powered on, the communication between the first interface and the third interface is triggered to be blocked, and the second interface is triggered to be communicated with the third interface;
when the circuit interface is not powered on, the communication between the second interface and the third interface is triggered to be blocked, and the first interface and the third interface are triggered to be communicated.
Further, the number of the first one-way valves is larger than one, and the liquid inlet of each first one-way valve is used for being connected with one hydraulic source.
Further, the number of the first check valves is one.
The embodiment of the invention provides a working conversion device and a pressure selection valve, wherein the device comprises the pressure selection valve and the conversion valve; the pressure selection valve includes: a solenoid valve and a first check valve; the switching valve includes: the device comprises an input interface and a working interface used for being connected with a main working pipeline, wherein when the input pressure of the input interface is larger than a preset threshold value, the main working pipeline connected with the working interface is triggered to be communicated, and when the input pressure of the input interface is not larger than the preset threshold value, the main working pipeline connected with the working interface is triggered to be blocked; the circuit interface is used for connecting a power supply, when the circuit interface is powered on, the communication between the first interface and the third interface is triggered and blocked, and the second interface is triggered to be communicated with the third interface; when the circuit interface is not powered on, the communication between the first interface and the second interface is triggered to be blocked, and the first interface is triggered to be communicated with the third interface. The device is provided with the first one-way valve, so that when the pressure fluctuation of the hydraulic source occurs, namely under the condition of no hydraulic power, the device can provide continuous and stable power for the switching valve. Of course, it is not necessary for any one product or method of practicing the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic structural diagram of a first operation mode switching device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second operation mode switching device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a switching valve according to an embodiment of the present invention;
1-a pressure selection valve; a 2-switching valve; 3-a box body; 11-an electromagnetic valve; 12-a first one-way valve; 13-a hydraulic source; 111-a first interface; 112-a second interface; 113-a third interface; 114-a power interface; 201-valve sleeve; 202-valve core; 203-an elastomer; 204-fourth interface; 205-fifth interface; 206-wall hole type centering actuator cylinder; 207-a second one-way valve; 208-a piston rod; 209-sixth interface; 210-return line interface; 211-seventh interface; 212-eighth interface; 213-load mechanism.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a first operation mode conversion device according to an embodiment of the present invention, where the device includes: a pressure selection valve 1 and a changeover valve 2;
the pressure selection valve 1 includes: a solenoid valve 11 and a first check valve 12;
the switching valve 2 includes: the device comprises an input interface and a working interface used for being connected with a main working pipeline, wherein when the input pressure of the input interface is larger than a preset threshold value, the main working pipeline connected with the working interface is triggered to be communicated, and when the input pressure of the input interface is not larger than the preset threshold value, the main working pipeline connected with the working interface is triggered to be blocked;
the electromagnetic valve 11 is provided with a first interface 111, a second interface 112, a third interface 113 and a circuit interface;
the first interface 111 is used for connecting with the box 3 for providing working medium;
the second port 112 is connected to the liquid outlet of the first check valve 12;
the third interface 113 is connected with an input interface of the switching valve 2;
the liquid inlet of the first one-way valve 12 is used for connecting a hydraulic source 13;
the circuit interface 114 is configured to connect to a power supply, and when the circuit interface 114 is powered on, trigger to block communication between the first interface 111 and the third interface 113, and trigger the second interface 112 to communicate with the third interface 113;
when the circuit interface 114 is not powered on, the communication between the second interface 112 and the third interface 113 is triggered to be blocked, and the first interface 111 is triggered to be communicated with the third interface 113.
The working medium may be oil, soapy water or water, which is not limited in the embodiment of the present invention. If the working medium is oil, the tank 3 for supplying oil may be used as an oil tank, and if the working medium is water, the tank 3 for supplying water may be used as a water tank.
It should be noted that, since the related field of the embodiment of the present invention is the field of hydraulic technology, the connection between the interfaces or the connection between the interfaces and the tank according to the embodiment of the present invention may be understood as a connection through a pipeline, and may also be understood as: when the interfaces are in a tubular structure, the connection between the interfaces or the connection between the interfaces and the box body is direct connection. For example: the connection of the first port 111 to the tank 3 for providing the medium may be understood as that the first port 111 is connected to the tank 3 through a pipeline, and if the first port 111 has a tubular structure, the first port 111 may be directly connected to the tank 3 without using a pipeline; similarly, the connection between the second port 112 and the liquid outlet of the first check valve 12, the connection between the third port 113 and the input port of the switching valve 2, and the connection between the liquid inlet of the first check valve 12 and the hydraulic source 13 may be through a pipeline connection or a butt joint between the ports.
The preset threshold may be 2.5MPa, and when a pressure greater than 2.5MPa is used as the high pressure, a pressure not greater than 2.5MPa is used as the low pressure.
Taking working medium as oil as an example, the working principle of the device is as follows: the hydraulic source 13 continuously provides power through oil, namely high pressure is generated through the oil in a pipeline, the high pressure oil sequentially passes through the first one-way valve 12 to reach the second interface 112 of the electromagnetic valve 2, when the circuit interface 114 of the electromagnetic valve 11 is powered on, the communication between the first interface 111 and the third interface 113 is triggered and blocked in the cavity of the electromagnetic valve 11, and the second interface 112 is triggered to be communicated with the third interface 113; the hydraulic source 13 generates high oil pressure, enters from the second interface 112, and exits from the third interface 113, and enters an input interface of the switching valve 2, so that a working interface of the switching valve 2 is communicated with a main working pipeline, and further a control surface supported by the hydraulic source is in a normal working state;
when the circuit interface 114 of the electromagnetic valve 11 is not powered on, triggering and blocking the communication between the second interface 112 and the third interface 113, triggering the first interface 111 to communicate with the third interface 113, so that the second interface 112 is in an unconnected state with the first one-way valve 12, and the first interface 111 and the third interface 113 are in a connected state; so that the oil outputted from the third port 113 belongs to low-pressure oil, the oil pressure inputted to the input port of the switching valve 2 is also low-pressure oil, and the main working line communicating with the working port of the switching valve 2 is triggered to be blocked.
Therefore, when the circuit interface 114 is powered on, the device provided by the embodiment of the invention can trigger the second interface 112 to be communicated with the third interface 113, high-pressure oil provided by the hydraulic source is output to the input interface of the switching valve 2 through the third interface 113 by the first one-way valve 12, and the main working pipeline connected with the working interface is triggered to be communicated, so that when the hydraulic source fluctuates, continuous and stable power can be still provided for the switching valve, and further, the normal working of a control surface supported by the hydraulic source 13 is realized, and the aircraft can fly normally.
The connection between the first check valve 12 and the hydraulic source 13 may be in various manners, where when the first check valve 12 is one, in order to ensure that the hydraulic source 13 can provide continuous pressure, that is, the hydraulic source 13 may be multiple, and then the liquid inlet of the first check valve 12 is connected to the multiple hydraulic sources 13 through a pipeline, as shown in fig. 2, when one hydraulic source 13 fails, the other hydraulic source 13 can provide continuous power through the pipeline, so as to improve the success rate of the normal operation of the control surface supported by the hydraulic source.
When the number of the first check valves 12 is greater than one, the liquid inlet of each first check valve 12 is used for connecting one hydraulic source 13, that is, the number of the hydraulic sources 13 is the same as that of the first check valves 12, one hydraulic source 13 corresponds to one first check valve 12, the oil inlet of the first check valve 12 is connected with the hydraulic source 13 through a pipeline, as shown in fig. 1, when one hydraulic source 13 fails, the other hydraulic source 13 can provide continuous power through the pipeline, and the success rate of normal operation of the control surface supported by the hydraulic source 13 is improved.
In order to achieve control of the operating state of the control surface by switching the operating mode of the main operating oil circuit, in one implementation the switching valve 2 comprises: valve housing 201, valve element 202, and elastomer 203;
the valve housing 201 is a hollow structure with two closed ends, and two pairs of working interfaces for communicating with the main working pipeline are arranged on the side wall of the hollow structure, wherein each pair of working interfaces comprises: a fourth interface 204 and a fifth interface 205;
the valve core 202 is disposed in the cavity of the valve sleeve 201, the first end of the valve core 202 is fixedly provided with an elastomer 203, and the second end of the valve core 202 is used as the input interface to penetrate through the closed end of the valve sleeve 201 and is connected with the third interface 113;
when the input pressure of the second end is larger than a preset threshold value, each pair of working interfaces is triggered to be communicated with the main working pipeline;
when the input pressure of the second end is not greater than a preset threshold value, the valve core 202 is triggered to block the communication between each pair of working interfaces and the main working pipeline.
The working principle of the switching valve in the implementation mode is as follows: when the input pressure of the second end of the valve core 202 is high pressure, the high pressure is compared with the elastic force of the elastic body 203, when the high pressure overcomes the elastic force, the elastic body 203 is in a compressed state, each pair of working interfaces is connected, and the control surface connected with the main working pipeline works normally; when the input pressure of the second end of the valve core is low pressure, and the elastic force of the spring is high pressure, the low pressure is smaller than Yu Danxing force, the elastic body is restored to a compressed state, the elastic force is released, and the elastic force released by the elastic body 203 triggers the valve core 202 to block the communication of each pair of working interfaces.
As can be seen, the switching valve 2 in this implementation manner is provided with two pairs of working interfaces on the valve sleeve 201, so that when the input pressure at the second end outputs high pressure, each pair of working interfaces is triggered to be communicated with the main working pipeline, the aircraft is in a normal flight state, and when the input pressure at the second end outputs low pressure, the valve element 202 blocks the communication between each pair of working interfaces and the main working pipeline, so that the main oil circuit enters a fault mode, and the fault mode is processed, so that the flight safety of the aircraft can be improved.
In one implementation, the elastomer may be a spring, which is simple and inexpensive.
Based on the working principle of hydraulic transmission of an aircraft, the situation that a hydraulic source fails may exist, if one hydraulic source fails, a control surface supported by the failed hydraulic source cannot return to a neutral position, and therefore, the aircraft cannot be controlled.
To return the failed control surface to the neutral position, to facilitate control of the aircraft by the pilot through other control surfaces, in one implementation, the apparatus includes: a switching valve 2 and an actuation assembly;
the switching valve 2 includes: valve sleeve 201, valve core 202, elastomer 203, wall hole type centering actuator 206, two second check valves 207 and piston rod 208;
the valve sleeve 201 is a hollow structure with two closed ends, and two pairs of working interfaces for communicating the main working pipeline are arranged on the side wall of the hollow structure, wherein each pair of working interfaces comprises: a fourth interface 204 and a fifth interface 205;
the valve core 202 is in a rod-shaped structure, and two shaft shoulders are respectively arranged on the rod-shaped structure;
the actuation assembly includes: a wall hole type centering actuator cylinder 206, two second one-way valves 207 and a piston rod 208;
the piston rod 208 is provided with a shaft shoulder;
the arm of the wall hole type centering actuator cylinder 206 is provided with two sixth interfaces 209 and a centering pipeline interface 210 for connecting the box 3, and the centering pipeline interface 210 is positioned between the two sixth interfaces 209;
the piston rod 208 is disposed within the cavity of the wall hole type centering ram 206;
each sixth interface 209 corresponds to one fifth interface 205 and one second one-way valve 207, each sixth interface 209 is respectively connected with a liquid outlet of one fifth interface 205 and one second one-way valve 207, and a liquid inlet of each second one-way valve 207 is connected with the box 3;
the valve core 202 is disposed in the cavity of the valve sleeve 201, the first end of the valve core 202 is fixedly provided with an elastomer 203, and the second end of the valve core 202 is used as the input interface to penetrate through the closed end of the valve sleeve 201 and is connected with the third interface 113;
when the input pressure of the second end is greater than a preset threshold value, the shoulder of the piston rod 208 can move along the wall hole type centering actuator cylinder 206 under the pressure output by the main working pipeline of the fourth interface 204;
when the input pressure of the second end is not greater than the preset threshold, the shoulder of one valve core 202 corresponds to one fourth interface 204, the shoulder of each valve core 202 is triggered to seal one fourth interface 204, and if the external load direction received by the piston rod 208 points to the return-to-middle pipeline interface 210 along the axial direction of the piston rod 208, the shoulder of the piston rod 208 is triggered to seal the return-to-middle pipeline interface 206, so that the actuating assembly is in a return-to-middle state.
In order to properly arrange the fourth port and the fifth port, a pair of working ports, that is, the fourth port and the fifth port, may be disposed on the side wall of the valve housing 201. The fourth port and the fifth port may be disposed on the side wall of the valve housing 201 directly opposite to each other, or the fourth port and the fifth port may be disposed on the side wall of the valve housing 201 in a staggered manner.
It should be noted that, each pair of working ports is in a connection state with the main working pipeline, and at this time, each pair of working ports is in a connection state.
In addition, the two shaft shoulders arranged on the valve core simply and quickly realize the sealing of the fourth interface.
It should be noted that, when the load end of the piston rod 208 is used for connecting the load mechanism 213 that controls the movement of the control surface, and the input pressure of the second end is not greater than the preset threshold value, the shoulder of one valve core 202 corresponds to one fourth interface 204, and the shoulders of each valve core 202 correspond to seal one fourth interface 204, so that the working interfaces are not communicated with the main working pipeline, as shown in fig. 3, when the control surface has an external load and has the same direction as the centering direction, the external load pushes the piston rod to move from the first cavity to the second cavity, the oil in the first cavity is supplemented by the oil tank through the second one-way valve 207 and the sixth interface 209, and the oil in the second cavity returns to the oil tank through the centering pipeline interface 210, the seventh interface 211 and the eighth interface 212 until the shoulder of the piston rod seals the centering pipeline interface; at this point, the piston rod connected load mechanism 213 causes the control surface to be in a neutral position.
As can be seen, in the switching valve in this implementation manner, by providing the wall hole type centering actuator cylinder and providing two pairs of working interfaces communicating with the main working pipeline on the valve sleeve, when the input pressure at the second end is greater than the preset threshold value, each pair of working interfaces is triggered to communicate with the main working pipeline, and the oil pressure flowing through the fifth interface 205 triggers the piston rod 208 to move along the wall hole type centering actuator cylinder 206, so that the control surface is in a normal working state; when the input pressure of the second end is not greater than the preset threshold, and an external load with the same direction as that of the centering exists, the shoulder of the piston rod 208 can be made to seal the centering pipeline interface 206, so that the control surface can return to the neutral position, and the pilot can conveniently control the aircraft through other control surfaces, so that the normal flight of the aircraft is maintained.
To reduce the arrangement of the pipeline, as shown in fig. 3, one implementation is as follows: a pair of loop interfaces are provided on the end side wall, the pair of loop interfaces comprising: a seventh interface 211 and an eighth interface 212; the end side wall is the side wall between the closed end of the hollow structure and the shaft shoulder adjacent to the valve core 202;
the return pipe joint 210 is connected to the seventh joint 211, and the eighth joint is used for connecting the tank 3.
It can be seen that this implementation manner not only realizes the communication between the return pipeline interface 210 and the box 3, but also saves pipelines, and reasonably realizes the layout of the pipelines.
When the hydraulic pressure source generates pressure fluctuation, the pressure fluctuation enables the hydraulic pressure provided by the hydraulic pressure source to be smaller than the elastic force of an elastic body in the switching valve, namely continuous power cannot be continuously provided for the switching valve, so that the switching valve cuts off the communication between the working interface and the main working oil way under the condition that the electromagnetic valve is electrified, and the main working oil way cannot keep continuous normal working, and in order to keep normal flight of an airplane, the embodiment of the invention provides a pressure selection valve, which comprises the following components: a solenoid valve 11 and a first check valve 12;
the electromagnetic valve 11 is provided with a first interface 111, a second interface 112, a third interface 113 and a circuit interface 114;
the first interface 111 is used for connecting with the box 3 for providing working medium;
the second port 112 is connected to the liquid outlet of the first check valve 12;
the third interface 113 is connected with an input interface of the switching valve 2;
the liquid inlet of the first one-way valve 12 is used for connecting a hydraulic source 13;
the circuit interface 114 is used for connecting a power supply, and when the circuit interface 114 is powered on, the communication between the first interface 111 and the third interface 113 is triggered and blocked, and the second interface 112 and the third interface 113 are triggered to be communicated;
when the circuit interface 114 is not powered on, the communication between the second interface 112 and the third interface 113 is triggered to be blocked, and the first interface 111 is triggered to be communicated with the third interface 113.
Therefore, the pressure selection valve provided by the embodiment of the invention is provided with the first one-way valve 12, so that the hydraulic source can provide continuous power for the main working pipeline under the condition of fluctuation, and the aircraft can fly normally.
In one implementation, the number of the first check valves 12 is greater than one, and the liquid inlet of each first check valve 12 is used for connecting with one hydraulic pressure source 13; the implementation way improves the success rate of normal operation of the control surface supported by the hydraulic source.
In one implementation, the number of first check valves 12 is one. The implementation method also improves the success rate of normal operation of the control surface supported by the hydraulic source 13, and also solves the number of the first one-way valves.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments in part.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (5)
1. An operating mode switching device, the device comprising: a pressure selection valve (1) and a changeover valve (2);
the pressure selection valve (1) includes: a solenoid valve (11) and a first one-way valve (12);
the switching valve (2) comprises: the device comprises an input interface and a working interface used for being connected with a main working pipeline, wherein when the input pressure of the input interface is larger than a preset threshold value, the main working pipeline connected with the working interface is triggered to be communicated, and when the input pressure of the input interface is not larger than the preset threshold value, the main working pipeline connected with the working interface is triggered to be blocked;
the electromagnetic valve (11) is provided with a first interface (111), a second interface (112), a third interface (113) and a circuit interface (114);
the first interface (111) is used for being connected with a box body (3) for providing working medium;
the second interface (112) is connected with a liquid outlet of the first one-way valve (12);
the third interface (113) is connected with an input interface of the switching valve (2);
the liquid inlet of the first one-way valve (12) is used for being connected with a hydraulic source (13);
the circuit interface (114) is used for connecting a power supply, and when the circuit interface (114) is powered on, the communication between the first interface (111) and the third interface (113) is triggered to be blocked, and the second interface (112) is triggered to be communicated with the third interface (113);
triggering to block communication between the second interface (112) and the third interface (113) when the circuit interface (114) is not powered on, triggering the first interface (111) to communicate with the third interface (113);
the switching valve (2) comprises: a valve housing (201), a valve core (202) and an elastic body (203);
the valve pocket (201) is a hollow structure with two closed ends, two pairs of working interfaces for communicating the main working pipeline are arranged on the side wall of the hollow structure, and each pair of working interfaces comprises: a fourth interface (204) and a fifth interface (205);
the valve core (202) is arranged in the cavity of the valve sleeve (201), the elastic body (203) is fixed at the first end of the valve core (202), and the second end of the valve core (202) is used as the input interface to penetrate through the closed end of the valve sleeve (201) and is connected with the third interface (113);
when the input pressure of the second end is larger than a preset threshold value, each pair of working interfaces are triggered to be communicated;
when the input pressure of the second end is not greater than a preset threshold value, triggering the valve element (202) to block each pair of working interfaces from being communicated with a main working pipeline;
the valve core (202) is of a rod-shaped structure, and two shaft shoulders are respectively arranged on the rod-shaped structure;
the apparatus further comprises: an actuation assembly;
the actuation assembly includes: a wall hole type centering actuator cylinder (206), two second one-way valves (207) and a piston rod (208);
the piston rod (208) is provided with a shaft shoulder;
the cylinder arm of the wall hole type centering actuating cylinder (206) is provided with two sixth interfaces (209) and a centering pipeline interface (210) for connecting the box body (3), and the centering pipeline interface (210) is positioned between the two sixth interfaces (209);
the piston rod (208) is arranged in the cavity of the wall hole type centering actuating cylinder (206);
each sixth interface (209) corresponds to one fifth interface (205) and one second one-way valve (207), each sixth interface (209) is respectively connected with a liquid outlet of one fifth interface (205) and one second one-way valve (207), and a liquid inlet of each second one-way valve (207) is connected with the box body (3);
when the input pressure of the second end is greater than a preset threshold value, the shaft shoulder of the piston rod (208) can move along the wall hole type centering actuating cylinder (206) under the action of the pressure output by the main working pipeline of the fourth interface (204);
when the input pressure of the second end is not greater than a preset threshold value, the shaft shoulder of one valve core (202) corresponds to one fourth interface (204), the shaft shoulder of each valve core (202) is triggered to correspondingly seal one fourth interface (204), and if the external load direction born by the piston rod (208) points to the return-to-center pipeline interface (210) along the axial direction of the piston rod (208), the shaft shoulder of the piston rod (208) is triggered to seal the return-to-center pipeline interface (210).
2. The device according to claim 1, wherein the number of said first non-return valves (12) is greater than one, the inlet of each of said first non-return valves (12) being adapted to be connected to one of said hydraulic sources (13).
3. The device according to claim 1, wherein the number of first non-return valves (12) is one.
4. The device according to claim 1, wherein the elastomer (203) is a spring.
5. The apparatus of claim 1, wherein the end side wall is provided with a pair of loop interfaces, the pair of loop interfaces comprising: a seventh interface (211) and an eighth interface (212); the end side wall is a side wall between the closed end of the hollow structure and a shaft shoulder adjacent to the valve core (202);
the return pipeline interface (210) is connected with the seventh interface (211), and the eighth interface is used for connecting with the box body (3).
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| CN202110667853.0A CN113236624B (en) | 2021-06-16 | 2021-06-16 | Working mode conversion device and pressure selection valve |
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| CN202110667853.0A CN113236624B (en) | 2021-06-16 | 2021-06-16 | Working mode conversion device and pressure selection valve |
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| CN113236624B true CN113236624B (en) | 2024-03-08 |
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| CN101451556A (en) * | 2007-11-30 | 2009-06-10 | 中国航空工业第一集团公司沈阳发动机设计研究所 | Hydraulic pressure moving tube with emergency back function |
| EP2161459A2 (en) * | 2008-09-03 | 2010-03-10 | Daimler AG | Drive device for a door and method for operating the same |
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| CN105864230A (en) * | 2015-01-23 | 2016-08-17 | 鞍钢股份有限公司 | Energy recovery device and method for hydraulic system |
| CN111498087A (en) * | 2020-04-30 | 2020-08-07 | 庆安集团有限公司 | Electro-hydraulic servo actuator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2522744B (en) * | 2014-11-14 | 2016-03-16 | Blagdon Actuation Res Ltd | Servo actuators |
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2021
- 2021-06-16 CN CN202110667853.0A patent/CN113236624B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451556A (en) * | 2007-11-30 | 2009-06-10 | 中国航空工业第一集团公司沈阳发动机设计研究所 | Hydraulic pressure moving tube with emergency back function |
| EP2161459A2 (en) * | 2008-09-03 | 2010-03-10 | Daimler AG | Drive device for a door and method for operating the same |
| CN105864230A (en) * | 2015-01-23 | 2016-08-17 | 鞍钢股份有限公司 | Energy recovery device and method for hydraulic system |
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