CN106989197B - Pilot valve body structure and pilot electromagnetic pneumatic valve - Google Patents
Pilot valve body structure and pilot electromagnetic pneumatic valve Download PDFInfo
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- CN106989197B CN106989197B CN201710330688.3A CN201710330688A CN106989197B CN 106989197 B CN106989197 B CN 106989197B CN 201710330688 A CN201710330688 A CN 201710330688A CN 106989197 B CN106989197 B CN 106989197B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
Abstract
The invention belongs to the field of control valves, and particularly relates to a pilot valve body structure and a pilot electromagnetic pneumatic valve. The valve body adopts a single-action sealing two-position three-way dry unloading structure, so that the influence of medium force on the pilot valve core is reduced when the pilot valve is opened and closed, the friction force on the pilot valve core is greatly reduced, and the quick response of the pilot valve is facilitated. The invention also provides a pilot electromagnetic pneumatic valve comprising the pilot valve body structure, and the pilot electromagnetic pneumatic valve also comprises an electromagnetic driving device and a main valve. The invention is mainly used for occasions with high flow and high pressure, such as liquid rocket engines, satellite on-orbit execution systems, ground test systems, automatic fluid pipeline systems and the like, and has the advantage of quick response.
Description
Technical Field
The invention belongs to the field of control valves, and particularly relates to a pilot valve body structure and a pilot electromagnetic pneumatic valve.
Background
The pilot-operated solenoid-operated valve generally comprises a solenoid driver, a pilot valve and a main valve, wherein the design of the solenoid driver directly influences the opening or closing speed of the pilot-operated solenoid-operated valve.
The pilot-operated electromagnetic pneumatic valve is mainly used for controlling the starting and closing of an engine, and the response speed of the pilot-operated electromagnetic pneumatic valve is not high in requirement on a common automobile due to the fact that fuel pressure is low and flow is not large.
The propellant flow of the orbit control engine in the aerospace application field is large, the pressure is high, the pilot-operated electromagnetic pneumatic valve is required to respond quickly under the condition of large flow, and the response time is not more than 3ms. Due to special requirements of products, the traditional solenoid valve cannot meet the requirement of quick response. Therefore, a pilot-operated electromagnetic pneumatic valve which can meet the requirement needs to be developed.
Disclosure of Invention
In order to solve the problems, the invention provides a pilot valve body structure which adopts a two-position three-way dry unloading structure and can realize quick response; the invention also provides a pilot-operated electromagnetic pneumatic valve comprising the pilot valve body structure, which has the characteristic of quick response and can meet the use requirements under the working conditions of high pressure and large flow.
The technical scheme for solving the problems is as follows: a pilot valve body structure comprises a pilot valve body, and is characterized in that:
a pilot valve core installation cavity, an air inlet, an exhaust port and a control cavity are arranged in the pilot valve body;
a pilot valve core assembly is arranged in the pilot valve core mounting cavity and comprises a pilot valve core and a return spring;
the guide valve core installation cavity is sequentially divided into a cavity upper part, a cavity middle lower part and a cavity lower part from top to bottom, a first cavity matching surface is arranged between the cavity upper part and the cavity middle upper part, a first guide valve seat is arranged between the cavity middle upper part and the cavity middle lower part, a second guide valve seat is arranged between the cavity middle lower part and the cavity lower part,
the guide valve core is divided into a guide valve core A section, a guide valve core B section, a guide valve core C section and a guide valve core D section, wherein the guide valve core A section is positioned in the upper part of the cavity and the middle upper part of the cavity, the guide valve core B section is positioned in the middle upper part of the cavity and the middle lower part of the cavity, the guide valve core C section is positioned in the middle lower part of the cavity, and the guide valve core D section is positioned in the middle lower part of the cavity and the lower part of the cavity; the reset spring is arranged in the lower part of the cavity and is positioned between the D section of the pilot valve core and the pilot valve body;
the diameter of the section A of the pilot valve core is equal to the inner diameters of the first pilot valve seat and the second pilot valve seat;
the side surface of the section A of the guide valve core is a first control cavity binding surface which is matched with the first cavity body binding surface, a first sealing surface is formed between the section B of the guide valve core and the section C of the guide valve core, and a second sealing surface is formed between the section C of the guide valve core and the section D of the guide valve core;
the air inlet is communicated with the middle upper part of the cavity, the air outlet is communicated with the lower part of the cavity, and the middle lower part of the cavity is communicated with the control cavity.
Further, the pilot valve core assembly comprises a sealing element, the sealing element is arranged in the upper portion of the cavity, and the sealing element is matched with the section A of the pilot valve core to form sealing.
Further, the sealing element is a radial sealing element.
Furthermore, the sealing element is an O-shaped rubber sealing ring or a spring energy storage sealing ring.
The technical scheme of the pilot electromagnetic pneumatic valve provided by the invention is as follows: a pilot-operated electromagnetic pneumatic valve comprises an electromagnetic driving device and a main valve, and is characterized in that:
the pilot valve body structure is also included;
the main valve comprises a main valve body, and the main valve body is fixedly connected with the pilot valve body 1;
the electromagnetic driving device is used for controlling the opening and closing of the pilot valve;
the pilot valve is used for controlling the opening and closing of the main valve.
Compared with the prior art, the invention has the advantages that:
1. the valve core and the valve seat of the pilot valve are optimally designed, and a two-position three-way dry unloading structure is adopted, so that the influence of medium force on the pilot valve core is reduced when the pilot valve is opened and closed, the friction force on the pilot valve core is greatly reduced, and the quick response of the pilot valve is facilitated.
2. The guide valve core is sealed only one time to realize the dry-wet separation of the electromagnet, so that the electromagnetic driving device is isolated from the control medium, and the problem of medium compatibility can not be considered by the soft magnetic material in the electromagnetic driving device.
3. The invention can be applied to liquid rocket engines, can be popularized and applied to relevant valves of satellite in-orbit execution systems, ground test systems and automatic fluid pipeline systems, can effectively improve the response of the valves and can ensure larger circulation capacity.
Drawings
FIG. 1 is an axial cross-sectional view of a pilot operated solenoid pneumatic valve of the present invention;
FIG. 2 is a schematic view of the pilot operated solenoid operated valve of the present invention with the pilot valve closed;
fig. 3 is an unloading schematic diagram of the pilot operated solenoid operated valve of the present invention in an open state of the pilot valve.
Wherein: 1-a pilot valve body; 101-a main valve body; 201-a housing; 202-an electromagnetic coil; 203-permanent magnet; 204-an armature; 205-magnetic isolation pad; 206-a mandril; 3-a pilot valve core; 31-section A of the pilot valve core; 32-section B of the guide valve core; 33-section C of the guide valve core; 34-section D of the guide valve core; 311-a first control cavity abutment surface; 321-a first sealing surface; 331-a second sealing surface; 4-a return spring; 5-a sealing element; 6-main valve core; 7-a second return spring; 8-sealing element B; 9-a guide valve core mounting cavity; 91-upper part of cavity; 912-a first cavity mating face; 913-a first pilot valve seat; 914-a second pilot valve seat; 92-the middle upper part of the cavity; 93-the middle lower part of the cavity; 94-lower part of cavity; 10-main valve core installation cavity; 103-main valve seat; 106-a control chamber; 12-an air inlet; 13-an exhaust port; 14-a media inlet; 15-a medium outlet; 17-sealing element C.
d 1 -diameter of section a of the pilot poppet;
d 2 -an inner diameter of the first pilot valve seat;
d 3 -an inner diameter of the second pilot valve seat;
f-medium force.
Detailed Description
The invention is described in detail below with reference to the following examples, which are given in the accompanying drawings:
referring to fig. 1, a pilot valve body structure comprises a pilot valve body 1, wherein a pilot valve core installation cavity 9, an air inlet 12, an air outlet 13 and a control cavity 106 are arranged in the pilot valve body 1.
A pilot valve core assembly is arranged in the pilot valve core mounting cavity 9 and comprises a pilot valve core 3 and a first return spring 4.
The guide valve core installation cavity 9 is sequentially divided into a cavity upper part 91, a cavity middle upper part 92, a cavity middle lower part 93 and a cavity lower part 94 from top to bottom, a first cavity matching surface 912 is arranged between the cavity upper part 91 and the cavity middle upper part 92, a first guide valve seat 913 is arranged between the cavity middle upper part 92 and the cavity middle lower part 93, and a second guide valve seat 914 is arranged between the cavity middle lower part 93 and the cavity lower part 94.
The guide valve core 3 is divided into a guide valve core A section 31, a guide valve core B section 32, a guide valve core C section 33 and a guide valve core D section 34, the guide valve core A section 31 is positioned in the upper part 91 of the cavity and the upper middle part 92 of the cavity, the guide valve core B section 32 is positioned in the upper middle part 92 of the cavity and the lower middle part 93 of the cavity, the guide valve core C section 33 is positioned in the lower middle part 93 of the cavity, and the guide valve core D section 34 is positioned in the lower middle part 93 of the cavity and the lower part 94 of the cavity; the first return spring 4 is disposed within the lower chamber portion 94 between the pilot valve spool D-section 34 and the pilot valve body 1.
The diameter of the pilot valve spool a-section 31 is equal to the inner diameter of both the first pilot valve seat 913 and the second pilot valve seat 914. The side surface of the guide valve core a section 31 is a first control cavity joint surface 311, the first control cavity joint surface 311 is matched with the first cavity joint surface 912, a first sealing surface 321 is formed between the guide valve core B section 32 and the guide valve core C section 33, and a second sealing surface 331 is formed between the guide valve core C section 33 and the guide valve core D section 34.
The air inlet 12 is communicated with the upper middle part 92 of the cavity, the air outlet 13 is communicated with the lower part 94 of the cavity, and the lower middle part 93 of the cavity is communicated with the control cavity 106.
The pilot valve spool assembly further includes a sealing member 5, the sealing member 5 being disposed within the chamber upper portion 91, the sealing member 5 cooperating with the pilot valve spool a-section 31 to form a seal. The sealing element 5 is a radial sealing element and can adopt an O-shaped rubber sealing ring or a spring energy storage sealing ring.
Referring to fig. 2 and 3, in order to realize quick response, the guide valve core 3 and the guide valve core mounting cavity 9 are optimizedAnd (6) counting. The sealing element 5 is arranged on the guide valve core A section 31 extending into the cavity upper part 91 to prevent the control gas from entering the cavity upper part 91, thereby preventing the end surface of the guide valve core A section 31 from bearing the pressure of the control gas, and simultaneously, the diameter d of the guide valve core A section 31 is utilized 1 And an inner diameter d of the first pilot valve seat 913 2 An inner diameter d of the second pilot valve seat 914 3 And the same, forming an unloading structure. In the state of sealing the inlet end of the pilot valve, the diameter d of the A section 31 of the pilot valve core is utilized 1 And an inner diameter d of the first pilot valve seat 913 2 The unloading structure is formed by the equal components, so that the load force caused by the medium force can be reduced, the influence of the medium force on the opening movement of the guide valve core 3 is reduced, and the quick opening response is realized. Using the diameter d of the pilot valve core A section 31 in the pilot valve vent end sealing state 1 And an inner diameter d of the second pilot valve seat 914 3 The valve core 3 is provided with a valve core and a valve core, and the valve core is provided with a valve core opening and a valve core closing opening.
Referring to fig. 1, a pilot operated solenoid-operated valve includes a pilot valve body 1, a main valve body 101, a pilot valve unit, a main valve unit, and a solenoid driver. The pilot valve unit includes a pilot valve spool assembly and the main valve unit includes a main valve spool assembly. The valve body 1 is internally provided with a guide valve core mounting cavity 9, a main valve core mounting cavity 10, an air inlet 12, an air outlet 13, a medium inlet 14 and a medium outlet 15.
The pilot valve core assembly is arranged in the pilot valve core mounting cavity 9 and comprises a pilot valve core 3, a return spring 4 and a radial sealing element 5; the main valve spool assembly includes a main valve spool 6.
The guide valve core installation cavity 9 is sequentially divided into a cavity upper part 91, a cavity middle upper part 92, a cavity middle lower part 93 and a cavity lower part 94 from top to bottom, a first cavity matching surface 912 is arranged between the cavity upper part 91 and the cavity middle upper part 92, a first guide valve seat 913 is arranged between the cavity middle upper part 92 and the cavity middle lower part 93, and a second guide valve seat 914 is arranged between the cavity middle lower part 93 and the cavity lower part 94.
Main spool mounting cavity 10 includes a control cavity 106; at the medium outlet 15 a main valve seat 103 is provided.
The guide valve core 3 is divided into a guide valve core A section 31, a guide valve core B section 32, a guide valve core C section 33 and a guide valve core D section 34, the guide valve core A section 31 is positioned in the upper part 91 of the cavity and the upper middle part 92 of the cavity, the guide valve core B section 32 is positioned in the upper middle part 92 of the cavity and the lower middle part 93 of the cavity, the guide valve core C section 33 is positioned in the lower middle part 93 of the cavity, and the guide valve core D section 34 is positioned in the lower middle part 93 of the cavity and the lower part 94 of the cavity; the return spring 4 is disposed within the lower chamber portion 94 between the pilot D section 34 and the valve body 1.
The side surface of the guide valve core a section 31 is a first control cavity contact surface 311, the first control cavity contact surface 311 is matched with a first cavity contact surface 912, a first sealing surface 321 is formed between the guide valve core B section 32 and the guide valve core C section 33, and a second sealing surface 331 is formed between the guide valve core C section 33 and the guide valve core D section 34.
The inlet port 12 communicates with the upper middle portion 92 of the chamber, the outlet port 13 communicates with the lower portion 94 of the chamber, and the lower middle portion 93 of the chamber communicates with the main spool mounting chamber 10.
The electromagnetic driving device comprises a shell 201, an electromagnetic coil 202, a permanent magnet 203, an armature 204, a magnetic isolation pad 205 and a top rod 206; the electromagnetic coil 202, the permanent magnet 203 and the armature 204 are arranged in the shell 201, the permanent magnet 203 is annular and is arranged in the middle of the shell 201 and is concentric with the shell 201, the permanent magnet 203 respectively generates magnetic fields at the upper part and the lower part of the armature 204, and the directions of the upper magnetic field and the lower magnetic field are opposite; the electromagnetic coil 202 is concentric with the shell 201, the electromagnetic coil 202 is divided into two sections, and the two sections of the electromagnetic coil 202 are respectively arranged on the upper part and the lower part of the permanent magnet 203; when the electromagnetic coil 202 is energized, the direction of the magnetic field generated by the electromagnetic coil is opposite to the direction of the upper magnetic field generated by the permanent magnet 203, and is the same as the direction of the lower magnetic field generated by the permanent magnet 203.
The armature 204 is arranged along the axial direction of the shell 201, is concentric with the shell 201, and penetrates through the permanent magnet 203 and the electromagnetic coil 202, a gap is reserved between the outer side surface of the armature 204 and the inner side surfaces of the permanent magnet 203 and the electromagnetic coil 202, and the armature 204 can move up and down in the axial direction in the shell 201; when the electromagnetic coil 202 is not energized, the permanent magnet 203 is located between the upper and lower end faces of the armature 204.
In order to realize quick response, the electromagnetic driving device is optimally designed. When the electromagnetic coil 202 is not electrified, the distance between the upper end surface of the armature 204 and the upper surface of the interior of the shell 201 and the distance between the lower end surface of the armature 204 and the lower surface of the interior of the shell 201 are equal or approximately equal by arranging the magnetic isolation pad 205, so that mutual offset of initial permanent magnetic self-locking force is realized through the design, and the influence of the permanent magnetic 203 self-locking force on a load is overcome.
The sealing element 5, the sealing element B8 and the sealing element C17 can adopt O-shaped rubber sealing rings or spring energy storage sealing rings. The housing 201 and the armature 204 are made of soft magnetic materials.
The pilot-operated electromagnetic pneumatic valve provided by the invention has the working principle that:
in an initial state, the permanent magnet 203 forms an upper magnetic circuit and a lower magnetic circuit in the shell 201, when the working gaps of the armature 204 relative to the upper end surface and the lower end surface of the shell 201 in the axial direction are equal, the self-locking forces generated by the upper end and the lower end of the permanent magnet 203 are mutually counteracted, and the sealing state of the pilot valve is not influenced; when the electromagnetic coil 202 is electrified, the direction of a generated magnetic field is opposite to the direction of a magnetic field of an upper magnetic circuit of the permanent magnet 203 and is the same as the direction of a magnetic field of a lower magnetic circuit of the permanent magnet 203, so that the upper magnetic circuit generated by the permanent magnet 203 is weakened, the lower magnetic circuit is strengthened, the electromagnetic attraction force of the two end faces of the armature 204 breaks the balance, and the electromagnetic attraction force which is downward in the axial direction is generated, the guide valve core 3 is driven to move downward through the ejector rod 206, when the guide valve core 3 moves towards the exhaust port 13, control gas enters the guide valve core installation cavity 9 from the gas inlet 12, after the guide valve core 3 moves to the upper limit of the stroke, the second sealing surface 331 and the second guide valve seat 914 form sealing fit to prevent the control gas from flowing out from the exhaust port 13, after the control gas builds up pressure in the control cavity 106, the main valve core 6 is driven to move towards the medium outlet 15, the medium outlet 15 is opened, propellant medium flows out of the medium inlet 14, and the engine starts to work; after the electromagnetic driving device is powered off, the magnetic energy caused by the magnetic potential of the electromagnetic coil 202 is rapidly weakened, finally, the reset spring 4 overcomes the permanent magnetic self-locking force at the full-open position, the control gas is exhausted from the exhaust port 13, the pressure in the control cavity 106 of the main valve core mounting cavity 10 is relieved, the second reset spring 7 is reset to rapidly push the main valve core 6 to move towards the guide valve core 3, the main valve core 6 and the main valve seat 103 form sealing to prevent the propellant medium from flowing out from the medium outlet 15, after the guide valve core 3 moves to the upper limit of the stroke, the first sealing surface 321 and the first guide valve seat 913 form sealing to close the control cavity 106, the supply of the propellant medium is cut off, and the engine is shut down.
The section A31 of the guide valve core adopts a radial sealing ring to realize the isolation of the electromagnetic coil driving device from a control medium, and the problem of medium compatibility can not be considered by a soft magnetic material used by the electromagnetic coil driving device.
The first sealing surface 321 and the second sealing surface 331 are sealed with the first pilot valve seat 913 and the second pilot valve seat 914, respectively, in a mushroom shape, and here, a cone seal may be used; the main valve element 6 is sealed with the main valve seat 103 by a conical seal, but here a mushroom seal is also possible.
The invention can be applied to liquid rocket engines, can be popularized and applied to relevant valves of satellite in-orbit execution systems, ground test systems and automatic fluid pipeline systems, can effectively improve the response of the valves and can ensure larger circulation capacity.
Those skilled in the art will appreciate that various additions, modifications and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
Claims (4)
1. The utility model provides a pilot valve body structure, includes pilot valve body (1), its characterized in that:
a guide valve core mounting cavity (9), an air inlet (12), an air outlet (13) and a control cavity (106) are arranged in the guide valve body (1);
a pilot valve core assembly is arranged in the pilot valve core mounting cavity (9), and comprises a pilot valve core (3) and a return spring (4);
the guide valve core mounting cavity (9) is sequentially divided into a cavity upper part (91), a cavity middle upper part (92), a cavity middle lower part (93) and a cavity lower part (94) from top to bottom, a first cavity matching surface (912) is arranged between the cavity upper part (91) and the cavity middle upper part (92), a first guide valve seat (913) is arranged between the cavity middle upper part (92) and the cavity middle lower part (93), a second guide valve seat (914) is arranged between the cavity middle lower part (93) and the cavity lower part (94),
the guide valve core (3) is divided into a guide valve core A section (31), a guide valve core B section (32), a guide valve core C section (33) and a guide valve core D section (34), the guide valve core A section (31) is positioned in the upper part (91) of the cavity and the middle upper part (92) of the cavity, the guide valve core B section (32) is positioned in the middle upper part (92) of the cavity and the middle lower part (93) of the cavity, the guide valve core C section (33) is positioned in the middle lower part (93) of the cavity, and the guide valve core D section (34) is positioned in the middle lower part (93) of the cavity and the lower part (94) of the cavity; the return spring (4) is arranged in the lower part (94) of the cavity and is positioned between the D section (34) of the pilot valve core and the pilot valve body (1),
the diameter of the pilot valve core A section (31) is equal to the inner diameters of the first pilot valve seat (913) and the second pilot valve seat (914);
the side surface of the guide valve core A section (31) is a first control cavity joint surface (311), the first control cavity joint surface (311) is matched with a first cavity joint surface (912), a first sealing surface (321) is formed between the guide valve core B section (32) and the guide valve core C section (33), and a second sealing surface (331) is formed between the guide valve core C section (33) and the guide valve core D section (34);
the air inlet (12) is communicated with the middle upper part (92) of the cavity, the exhaust port (13) is communicated with the lower part (94) of the cavity, and the middle lower part (93) of the cavity is communicated with the control cavity (106).
2. A pilot valve body structure as defined in claim 1, wherein: the pilot valve core assembly comprises a sealing element (5), the sealing element (5) is arranged in the upper portion (91) of the cavity, and the sealing element (5) is matched with the A section (31) of the pilot valve core to form sealing.
3. A pilot valve body structure as defined in claim 2, wherein: the sealing element (5) is a radial sealing element.
4. A pilot valve body structure as defined in claim 3, wherein: the sealing element (5) adopts an O-shaped rubber sealing ring or a spring energy storage sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710330688.3A CN106989197B (en) | 2017-05-11 | 2017-05-11 | Pilot valve body structure and pilot electromagnetic pneumatic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710330688.3A CN106989197B (en) | 2017-05-11 | 2017-05-11 | Pilot valve body structure and pilot electromagnetic pneumatic valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106989197A CN106989197A (en) | 2017-07-28 |
| CN106989197B true CN106989197B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710330688.3A Active CN106989197B (en) | 2017-05-11 | 2017-05-11 | Pilot valve body structure and pilot electromagnetic pneumatic valve |
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| CN (1) | CN106989197B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360834B (en) * | 2020-10-15 | 2021-10-08 | 同济大学 | Oil supply source automatic switching thread cartridge reversing valve |
| CN113864272B (en) * | 2021-10-18 | 2024-02-27 | 山东泰丰智能控制股份有限公司 | Proportional dynamic prefill valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004069045A (en) * | 2002-06-13 | 2004-03-04 | Tgk Co Ltd | Solenoid valve |
| WO2010135902A1 (en) * | 2009-05-27 | 2010-12-02 | 泸州川油钻采工具有限公司 | High-low pressure pilot valve |
| CN202834247U (en) * | 2012-09-05 | 2013-03-27 | 北京工业大学 | Pure water hydraulic electromagnetism unloading overflow valve |
| CN105387218A (en) * | 2015-12-10 | 2016-03-09 | 西安航天动力研究所 | Air-control pilot electromagnetic valve |
-
2017
- 2017-05-11 CN CN201710330688.3A patent/CN106989197B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004069045A (en) * | 2002-06-13 | 2004-03-04 | Tgk Co Ltd | Solenoid valve |
| WO2010135902A1 (en) * | 2009-05-27 | 2010-12-02 | 泸州川油钻采工具有限公司 | High-low pressure pilot valve |
| CN202834247U (en) * | 2012-09-05 | 2013-03-27 | 北京工业大学 | Pure water hydraulic electromagnetism unloading overflow valve |
| CN105387218A (en) * | 2015-12-10 | 2016-03-09 | 西安航天动力研究所 | Air-control pilot electromagnetic valve |
Non-Patent Citations (1)
| Title |
|---|
| 一种航天器用先导级电磁阀的新型结构设计;张榛;《空间控制技术与应用》;20140215(第01期);全文 * |
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| CN106989197A (en) | 2017-07-28 |
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