Zero-leakage dual-redundancy plug-in two-dimensional electromagnetic directional valve

Abstract

The invention relates to the technical field of reversing valves, in particular to a zero-leakage dual-redundancy plug-in two-dimensional electromagnetic reversing valve which comprises a driving device, a valve sleeve is arranged at the output end of the driving device, a valve element assembly is arranged in the valve sleeve, and a spring seat is arranged at the output end of the driving device and connected with the valve element assembly. A connector is arranged at the end of the valve element assembly and arranged in the spring seat in a sliding mode, a reset spring is arranged on the outer side of the connector in a winding mode, a hollow cavity is formed in the middle of the valve element assembly, a plurality of oil outlets are formed in the side wall of the valve element assembly, oil cavities matched with the oil outlets are formed in the inner wall of the valve sleeve, and the valve element assembly is arranged in the hollow cavity. A sealing ring is arranged between each two oil cavities, and the sealing rings are additionally arranged at leakage points, so that internal leakage is reduced to zero, pressure loss is greatly reduced, the reliability of a system and the efficiency of equipment are improved, and the opening response time of the reversing valve is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of reversing valves, and in particular to a zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve. Background Art

[0002] The two-dimensional solenoid reversing valve is a directional control valve with more than two forms of movement and more than two oil ports. It is a valve that realizes the communication, cutting off and reversing of hydraulic oil flow, as well as pressure unloading and sequential action. The increase in internal leakage will affect the timeliness of the system's pressure buildup and the reliability of the system's operation. When the leakage is serious, the sensitive chamber and the high-pressure chamber cannot build up pressure, causing the valve function to fail. When the rotating solenoid coil fails, the valve core assembly cannot rotate or move axially, causing the reversing function to fail. Summary of the invention

[0003] The purpose of the present invention is to overcome the disadvantage of the prior art that the reversing valve is prone to functional failure, and to provide a zero-leakage dual-redundancy plug-in two-dimensional electromagnetic reversing valve.

[0004] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve, including a driving device, a valve sleeve is provided at the output end of the driving device, a valve core assembly is provided inside the valve sleeve, a spring seat is provided at the output end of the driving device and connected with the valve core assembly, a connecting head is provided at the end of the valve core assembly and is slidably arranged inside the spring seat, a return spring is wound around the outer side of the connecting head, a hollow cavity is provided at the middle position of the valve core assembly, a plurality of oil outlets are provided on the side wall of the valve core assembly, an oil cavity matching the oil outlet is provided on the inner wall of the valve sleeve, and a sealing ring is provided between the two oil cavities.

[0005] Furthermore, the driving device comprises a connecting plate connected to the valve sleeve, an electromagnet protection cover is arranged on the other side of the connecting plate, and a dual-redundancy driver is arranged inside the electromagnet protection cover.

[0006] Furthermore, the dual-redundancy driver includes a dual-redundancy shell arranged inside the electromagnet protection cover, a dual-redundancy frame is arranged inside the dual-redundancy shell, a dual-redundancy coil 1 and a dual-redundancy coil 2 are arranged on the dual-redundancy frame, a dual-redundancy front stop iron and a dual-redundancy rear stop iron are arranged in the middle position of the dual-redundancy frame, and a dual-redundancy rotor assembly is arranged between the dual-redundancy front stop iron and the dual-redundancy rear stop iron.

[0007] Furthermore, the double-redundant rotor assembly includes a rotating disk, an output shaft is arranged at the middle position of the rotating disk, a shift fork is arranged at one end of the output shaft, an active shift rod is arranged at one end of the shift fork, the end of the active shift rod is connected to a driven shift rod via a connecting shaft, the other side of the driven shift rod is connected to the valve core assembly, and the output shaft and the valve core assembly are arranged coaxially.

[0008] Furthermore, one end of the valve core assembly is inserted into the interior of the connector, and a sealing ring 1 is provided between the valve core assembly and the inner wall of the connector.

[0009] Furthermore, the end of the hollow cavity is arranged to be open, and the interior of the connector and the end of the valve core assembly form a high-pressure cavity.

[0010] Furthermore, a sensitive cavity is formed between an end of the valve core assembly away from the connector and an inner wall of the valve sleeve.

[0011] Furthermore, the oil outlet cooperates with the inner wall of the valve sleeve and the valve core assembly to form oil chamber A, oil chamber T and oil chamber P. A sealing ring 2 is provided between the oil chamber T and the oil chamber A, and a sealing ring 3 is provided between the oil chamber P and the oil chamber A.

[0012] The beneficial effects of the embodiment of the present invention are as follows: the dual-redundancy coil 1 and the dual-redundancy coil 2 are arranged on the dual-redundancy skeleton, and the dual-redundancy front baffle iron and the dual-redundancy rear baffle iron assist in installing the dual-redundancy rotor assembly, which together constitute an efficient and reliable dual-redundancy rotating electromagnet. By controlling the opening and closing of the valve port of the dual-redundancy coil 1 and the dual-redundancy coil 2, by using two coils, it can be effectively guaranteed that the reversing valve is in operation. When any one of the coils fails, the other coil can be enabled at any time as a driving unit to ensure that the product can work normally, prevent the entire valve body from failing, and improve the reliability during use. By optimizing the structure of the valve core assembly and the oil outlet, and arranging multiple sealing rings, the sealing of the valve body is ensured, and the internal leakage problem is avoided. It can meet the needs under various complex working conditions, has high reliability, and strong anti-pollution ability, and can be used in important fields such as aviation and aerospace. By adding a sealing ring at the leakage point, the internal leakage is reduced to zero, which greatly reduces the pressure loss, improves the reliability of the system and the efficiency of the equipment, and reduces the opening response time of the reversing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0015] Figure 3 It is a schematic diagram of the structure of the output shaft and valve core assembly of the present invention;

[0016] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the valve sleeve of the present invention;

[0017] In the figure: 1. valve sleeve; 101. sensitive chamber; 102. high-pressure chamber; 2. valve core assembly; 201. sealing ring 1; 202. sealing ring 2; 203. sealing ring 3; 3. connector; 301. reset spring; 4. connecting plate; 5. electromagnet protection cover; 501. double-redundant coil 1; 502. double-redundant coil 2; 503. double-redundant skeleton; 504. double-redundant front stop; 505. output shaft; 5051. shift fork; 5052. active shift rod; 5053. driven shift rod; 506. double-redundant rear stop. DETAILED DESCRIPTION

[0018] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0019] See also Figures 1 to 4 The embodiment of the present invention discloses a zero-leakage dual-redundancy plug-in two-dimensional electromagnetic reversing valve, which mainly includes a driving device, a valve sleeve 1, a valve core assembly 2, a spring seat, a connector 3 and a reset spring 301. The driving device is used to provide power. The driving device includes a connecting plate 4, an electromagnet protection cover 5 and a dual-redundancy driver. The connecting plate 4 is connected to the valve sleeve 1. The electromagnet protection cover 5 is arranged on the other side of the connecting plate 4 to protect the dual-redundancy driver. The dual-redundancy driver includes a dual-redundancy shell with a dual-redundancy skeleton, a dual-redundancy coil 1 501 and a dual-redundancy coil 2 502. The double-redundant rotor assembly is mounted on the double-redundant frame 503, and the double-redundant front stop 504 and the double-redundant rear stop 506 assist in installing the double-redundant rotor assembly, which together constitute an efficient and reliable double-redundant rotating electromagnet. The opening and closing of the valve port are controlled by controlling the on-off of the double-redundant coil 1 501 and the double-redundant coil 2 502. By using two coils, it can be effectively guaranteed that during the operation of the reversing valve, when any one of the coils fails, the other coil can be enabled as a driving unit at any time to ensure that the product can work normally, prevent the entire valve body from failing, and improve reliability during use.

[0020] The double-redundancy rotor assembly includes a rotating disk, an output shaft 505, a shift fork 5051, an active shift rod 5052, a driven shift rod 5053 and other components. The rotating disk is arranged between the double-redundancy front stop iron 504 and the double-redundancy rear stop iron 506. One end of the output shaft 505 is connected to the rotating disk, and the other end is provided with a shift fork 5051. One end of the shift fork 5051 is provided with an active shift rod 5052. The end of the active shift rod 5052 is connected to the driven shift rod 5053 through a connecting shaft. The other side of the driven shift rod 5053 is connected to the valve core assembly 2. When the double-redundancy driver is working, the double-redundancy rotor assembly can be driven to rotate, and then the shift fork 5051, the active shift rod 50 52 and the driven lever 5053 drive the valve core assembly 2 to rotate and move axially, the spring seat and the connecting head 3 are used to connect and support the valve core assembly 2, the reset spring 301 is used to reset the valve core assembly 2, the valve sleeve 1 is provided with the valve core assembly 2, the end of the valve core assembly 2 is provided with a connecting head 3, the connecting head 3 is slidably arranged inside the spring seat, the outer side of the connecting head 3 is wound with a reset spring 301, which is used to reset the valve core assembly 2 after being acted upon by an external force, a hollow cavity is provided in the middle position of the valve core assembly 2, a plurality of oil outlets are provided on the side wall, an oil cavity matching the oil outlet is provided on the inner wall of the valve sleeve 1, and a sealing ring is provided between the two oil cavities to ensure the sealing.

[0021] One end of the valve core assembly 2 is inserted into the connector 3, and a sealing ring 1 201 is arranged between the inner wall of the connector 3 to ensure sealing. The end of the hollow cavity is set to be an opening. The interior of the connector 3 and the end of the valve core assembly 2 form a high-pressure chamber 102, and the end of the valve core assembly 2 away from the connector 3 and the inner wall of the valve sleeve 1 form a sensitive chamber 101. These designs can ensure that the valve core assembly 2 will not leak hydraulic oil during operation. The oil outlet cooperates with the inner wall of the valve sleeve 1 and the valve core assembly 2 to form an oil chamber A, an oil chamber T and an oil chamber P. A sealing ring 202 is arranged between the oil chamber T and the oil chamber A, and a sealing ring 3 203 is arranged between the oil chamber P and the oil chamber A. These sealing rings can ensure the sealing between the various oil chambers, prevent hydraulic oil leakage, and improve the use effect.

[0022] When in use, when the rotating electromagnet double redundant coil 501 is powered off, the sensitive chamber 101 is in a low oil pressure state, the high pressure chamber 102 is in a high oil pressure state, and the valve core assembly 2 moves to the right under the action of the hydraulic pressure to achieve AT pass, and the internal leakage is zero. When the rotating electromagnet double redundant coil 501 is powered on, the sensitive chamber 101 is in a high oil pressure state, and the oil pressure of the sensitive chamber 101 is greater than the oil pressure of the high pressure chamber 102. The valve core assembly 2 moves to the left under the action of the hydraulic pressure to achieve PA pass, and the internal leakage is zero. When the rotating electromagnet double redundant coil 2 502 is powered off, the sensitive chamber 101 is in a low oil pressure state, the high pressure chamber 102 is in a high oil pressure state, and the valve core assembly 2 moves to the right under the action of the hydraulic pressure to achieve AT pass, and the internal leakage is zero. When the rotating electromagnet double redundant coil 2 502 is powered on, the sensitive chamber 101 is in a high oil pressure state, the oil pressure in the sensitive chamber 101 is greater than the oil pressure in the high pressure chamber 102, and the valve core assembly 2 moves to the left under the action of the hydraulic pressure to achieve PA pass, and the internal leakage is zero.

[0023] Working principle: When the dual-redundancy driver is working, the dual-redundancy coil 1 501 or the dual-redundancy coil 2 502 is energized to generate a magnetic field, driving the dual-redundancy rotor assembly to rotate, and the rotating disk drives the output shaft 505, the fork 5051, the active lever 5052 and the driven lever 5053 to move, thereby driving the valve core assembly 2 to rotate and move axially. The movement of the valve core assembly 2 can change the on-off state between the oil outlet and the oil chamber, realize the functions of communication, cutting and reversing of the hydraulic oil flow, and improve the reliability and stability of the drive system. At the same time, by optimizing the structure of the valve core assembly 2 and the oil outlet, and setting multiple sealing rings, the sealing of the valve body is ensured, and the internal leakage problem is avoided. It can meet the needs of various complex working conditions, has high reliability and strong anti-pollution ability, and can be used in important fields such as aviation and aerospace. By adding a sealing ring at the leakage point, the oil can be completely sealed in the crude oil liquid cavity during the opening and closing process of the two-dimensional electromagnetic reversing valve port when PA is passed and AT is passed, reducing the internal leakage to zero, greatly reducing the pressure loss, improving the reliability of the system and the efficiency of the equipment, and reducing the opening response time of the reversing valve.

[0024] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0027] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve, including a drive device, characterized in that: The output end of the driving device is provided with a valve sleeve, a valve core assembly is provided inside the valve sleeve, the output end of the driving device is provided with a spring seat connected to the valve core assembly, the end of the valve core assembly is provided with a connecting head slidably arranged inside the spring seat, a return spring is wound around the outer side of the connecting head, a hollow cavity is provided in the middle position of the valve core assembly, a plurality of oil outlets are provided on the side wall of the valve core assembly, an oil cavity matching the oil outlet is provided on the inner wall of the valve sleeve, and a sealing ring is provided between the two oil cavities.

2. The zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve according to claim 1 is characterized in that: The driving device comprises a connecting plate connected to the valve sleeve, an electromagnet protection cover is arranged on the other side of the connecting plate, and a double-redundant driver is arranged inside the electromagnet protection cover.

3. The zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve according to claim 2 is characterized in that: The dual-redundancy driver comprises a dual-redundancy shell arranged inside an electromagnet protective cover, a dual-redundancy frame arranged inside the dual-redundancy shell, a dual-redundancy coil 1 and a dual-redundancy coil 2 arranged on the dual-redundancy frame, a dual-redundancy front iron and a dual-redundancy rear iron arranged in the middle position of the dual-redundancy frame, and a dual-redundancy rotor assembly arranged between the dual-redundancy front iron and the dual-redundancy rear iron.

4. The zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve according to claim 3 is characterized in that: The double-redundant rotor assembly includes a rotating disk, an output shaft is arranged in the middle position of the rotating disk, a shift fork is arranged at one end of the output shaft, an active shift rod is arranged at one end of the shift fork, the end of the active shift rod is connected to a driven shift rod via a connecting shaft, the other side of the driven shift rod is connected to the valve core assembly, and the output shaft and the valve core assembly are arranged coaxially.

5. The zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve according to claim 1 is characterized in that: One end of the valve core assembly is inserted into the interior of the connector, and a sealing ring 1 is arranged between the valve core assembly and the inner wall of the connector.

6. The zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve according to claim 5 is characterized in that: The end of the hollow cavity is arranged to be open, and the interior of the connector and the end of the valve core assembly form a high-pressure cavity.

7. The zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve according to claim 5, characterized in that: A sensitive cavity is formed between one end of the valve core component away from the connector and the inner wall of the valve sleeve.

8. The zero-leakage dual-redundancy cartridge-type two-dimensional electromagnetic reversing valve according to claim 1, characterized in that: The oil outlet cooperates with the inner wall of the valve sleeve and the valve core assembly to form an oil chamber A, an oil chamber T and an oil chamber P. A sealing ring 2 is provided between the oil chamber T and the oil chamber A, and a sealing ring 3 is provided between the oil chamber P and the oil chamber A.

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