CN113882972B - Double-component variable flow electromagnetic pilot control valve - Google Patents
Double-component variable flow electromagnetic pilot control valve Download PDFInfo
- Publication number
- CN113882972B CN113882972B CN202111108344.0A CN202111108344A CN113882972B CN 113882972 B CN113882972 B CN 113882972B CN 202111108344 A CN202111108344 A CN 202111108344A CN 113882972 B CN113882972 B CN 113882972B
- Authority
- CN
- China
- Prior art keywords
- valve
- valve core
- outlet
- auxiliary
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
- F02K9/56—Control
- F02K9/58—Propellant feed valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to a bipropellant control valve, in particular to a bipropellant variable-flow electromagnetic pilot control valve, which solves the defects that the existing control valve for a bipropellant variable-thrust engine is not beneficial to structural optimization and small-size light design due to larger space size occupation and higher structural weight, and leads to larger space layout and total assembly difficulty when a plurality of bipropellant variable-thrust engines are assembled. The double-component variable-flow electromagnetic pilot gas control valve comprises a first auxiliary valve, a second auxiliary valve, a first main valve and a second main valve. The invention integrates two paths of double-component medium channels and two paths of control gas channels, realizes the synchronous variable flow control of the double-component medium, performs integrated optimization on the structural space, and completes the small-sized and weight-reduced design of the control valve structure while realizing the synchronous variable flow and the quick switch control.
Description
Technical Field
The invention relates to a bipropellant control valve, in particular to a bipropellant variable-flow electromagnetic pilot-actuated control valve.
Background
In the development of a track attitude control engine, in order to meet the requirements of quick start and shutdown control of a high-performance two-component variable thrust engine, the development of a control valve for meeting the requirements of synchronous variable flow and on-off control of two-way media is provided.
To realize synchronous variable flow and on-off control of two-way media, four main valve cores are usually needed for regulation and control, the space size is large during independent assembly, the structural weight is high, the structure optimization and the small-sized lightweight design are not facilitated, the space layout and the assembly difficulty are increased when the attitude control power system is assembled with a plurality of two-component variable thrust engines, and the structural strength and the weight are difficult to meet the requirements.
Disclosure of Invention
The invention aims to solve the defects that the existing control valve for a bipropellant variable-thrust engine is not beneficial to structural optimization and small-size light design due to large occupied space size and high structural weight, and the space layout and the general assembly difficulty are increased during the assembly of a plurality of bipropellant variable-thrust engines, and provides a bipropellant variable-flow electromagnetic pilot-operated air control valve.
In order to solve the defects of the prior art, the invention provides the following technical solutions:
a double-group variable flow electromagnetic pilot control valve is characterized in that: the system comprises a first auxiliary valve, a second auxiliary valve, a first main valve and a second main valve;
the first auxiliary valve and the second auxiliary valve have the same structure and respectively comprise an auxiliary valve body, an auxiliary valve core, an auxiliary valve coil and an auxiliary valve spring; the auxiliary valve body is provided with an air inlet and an air outlet; an auxiliary valve core is arranged in the auxiliary valve body, one end of the auxiliary valve core corresponds to the air inlet, the other end of the auxiliary valve core corresponds to the air outlet, and an auxiliary valve spring is arranged between the end part of the auxiliary valve core and the auxiliary valve body; an air inlet and exhaust cavity communicated with an air inlet and an air outlet is formed between the auxiliary valve core and the auxiliary valve body; the auxiliary valve coil is arranged in the auxiliary valve body;
the first main valve and the second main valve have the same structure and respectively comprise a main valve body, an outer valve core, a cover plate, an inner valve core, an annular lining, an outer spring and an inner spring;
the main valve body is provided with an inlet and an outlet; an outer valve core is arranged in the main valve body, a first annular cavity and an outer inlet and outlet cavity for communicating an inlet and an outlet are formed between the outer valve core and the main valve body;
a guide hole is formed in the middle of the upper end of the outer valve core, the inner valve core is positioned on the upper portion of the outer valve core, the lower end of the inner valve core extends into the guide hole, a second annular cavity is formed among the main valve body, the inner valve core and the outer valve core, and an inner inlet and outlet cavity is formed among the inner valve core and the outer valve core;
the annular bushing is positioned in the second annular cavity, the second annular cavity is divided into a second annular cavity upper part and a second annular cavity lower part, the inner wall of the annular bushing is tightly attached to the inner valve core, and the outer wall of the annular bushing is fixedly connected with the main valve body; the outer spring is positioned in the lower part of the second annular cavity, and two ends of the outer spring are respectively connected with the outer valve core and the annular bushing;
the cover plate is positioned at the upper part of the inner valve core and is fixedly connected with the main valve body; the middle of the upper end of the inner valve core is provided with a groove, the cover plate is provided with a bulge matched with the groove, the inner spring is positioned in the groove, and two ends of the inner spring are respectively connected with the bulges of the inner valve core and the cover plate;
the outer valve core is provided with an axial through hole for communicating the inner inlet and outlet cavity with the outlet, and a radial through hole for communicating the inner inlet and outlet cavity with the outer inlet and outlet cavity; the inner valve core is provided with a through hole for communicating the groove and the inner inlet and outlet cavities;
the air inlet of the first auxiliary valve is sequentially communicated with the first annular cavity of the first main valve and the first annular cavity of the second main valve through a flow passage, and the air inlet of the second auxiliary valve is sequentially communicated with the upper portion of the second annular cavity of the first main valve and the upper portion of the second annular cavity of the second main valve through a flow passage.
Furthermore, the outlet end of the axial through hole is provided with a throttling nail, so that the flow resistance characteristic of the double-component medium under the low-flow working condition can be accurately adjusted.
Furthermore, an outer outlet valve seat with an annular bulge is axially arranged on the inner wall of the main valve body, and a sealing ring is arranged at the contact position of the outer valve core and the outer outlet valve seat; the outer valve core is provided with an annular raised inner outlet valve seat at the inlet end of the axial through hole along the axial direction, and a sealing gasket is arranged at the contact part of the inner valve core and the inner outlet valve seat.
Furthermore, sealing rings are arranged between the outer valve core and the main valve body and between the outer valve core and the inner valve core; and sealing rings are arranged between the inner valve core and the main valve body and between the inner valve core and the annular bushing.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention integrates two paths of bipropellant medium channels and two paths of control gas channels, a first auxiliary valve and a second auxiliary valve are electromagnetic pilot valves, and the opening or closing of an outer valve core and an inner valve core inside a first main valve and a second main valve is controlled by controlling the on-off of gas, so that the synchronous variable flow control of bipropellant media is realized; the inner valve core is nested in the guide hole of the outer valve core, integration optimization is carried out on the structural space, synchronous variable flow and quick switch control are achieved, meanwhile, the control valve is small in structure and weight reduction design is completed, and spatial layout and final assembly of a plurality of two-component variable thrust engines during assembly are facilitated.
(2) The outer valve core and the main valve body form a medium flow passage with a large drift diameter, the inner valve core is nested in a guide hole of the outer valve core, the medium flow passage with a small drift diameter is integrated in the outer valve core, and the large-flow working condition or the small-flow working condition can be realized by controlling the opening of the outer valve core or the inner valve core of the first main valve and the second main valve.
(3) According to the invention, the inner spring is pressed in the groove of the inner valve core by the bulge of the cover plate, so that the required installation volume of the inner spring can be realized, the groove can be sealed, a medium enters the groove under a low-flow working condition through the matching of the groove of the inner valve core and the T-shaped through hole, a downward pressing force is applied to the inner valve core, the closing of the inner valve core is facilitated, the spring force of the required inner spring is reduced, and the small-size and light-weight design of the control valve structure is further realized.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
The reference numerals are explained below: 11-a first secondary valve, 12-a second secondary valve, 13-a first main valve, 14-a second main valve; 21-an auxiliary valve body, 22-an auxiliary valve core, 23-an auxiliary valve coil, 24-an auxiliary valve spring, 25-an air inlet, 26-an air outlet and 27-an air inlet and air outlet cavity; 31-main valve body, 32-outer valve core, 33-cover plate, 34-inner valve core, 35-annular bushing, 36-outer spring, 37-inner spring, 38-inlet and 39-outlet; 41-a first annular cavity, 42-an outer inlet and outlet cavity, 43-an upper part of a second annular cavity, 44-a lower part of the second annular cavity, and 45-an inner inlet and outlet cavity; 5-a throttling nail; 61-outer outlet valve seat, 62-inner outlet valve seat.
Detailed Description
The invention will be further described with reference to the drawings and exemplary embodiments.
Referring to fig. 1, a two-component variable flow electromagnetic pilot control valve includes a first sub-valve 11, a second sub-valve 12, a first main valve 13, and a second main valve 14.
The first auxiliary valve 11 and the second auxiliary valve 12 are electromagnetic pilot valves, and have the same structure and comprise an auxiliary valve body 21, an auxiliary valve core 22, an auxiliary valve coil 23 and an auxiliary valve spring 24; the auxiliary valve body 21 is provided with an air inlet 25 and an air outlet 26; an auxiliary valve core 22 is arranged in the auxiliary valve body 21, one end of the auxiliary valve core 22 corresponds to the air inlet valve seat, the other end of the auxiliary valve core 22 corresponds to the air outlet 26, and an auxiliary valve spring 24 is arranged between the end part of the auxiliary valve core 22 and the auxiliary valve body 21; the sub-valve coil 23 is disposed in the sub-valve body 21; an air inlet and outlet cavity 27 for communicating the air inlet 25 and the air outlet 26 is formed between the auxiliary valve core 22 and the auxiliary valve body 21; the inner wall of the auxiliary valve body 21 is provided with an air inlet valve seat protruding in an annular shape along the axial direction, and the air inlet valve seat is used for improving the sealing performance of the air inlet and outlet cavity 27.
The first main valve 13 and the second main valve 14 are pneumatic main valves, and the two main valves have the same structure and respectively comprise a main valve body 31, an outer valve core 32, a cover plate 33, an inner valve core 34, an annular bushing 35, an outer spring 36 and an inner spring 37; the main valve body 31 is provided with an inlet 38 and an outlet 39; an outer valve core 32 is arranged inside the main valve body 31, a sealing ring is arranged between the outer valve core 32 and the main valve body 31 for realizing sliding sealing, a first annular cavity 41 is formed between the outer valve core 32 and the main valve body 31, and an outer inlet and outlet cavity 42 communicating the inlet 38 and the outlet 39 is formed.
A guide hole is formed in the middle of the upper end of the outer valve core 32, the inner valve core 34 is positioned on the upper portion of the outer valve core 32, the lower end of the inner valve core 34 extends into the guide hole, a second annular cavity is formed among the main valve body 31, the inner valve core 34 and the outer valve core 32, and an inner inlet and outlet cavity 45 is formed between the inner valve core 34 and the outer valve core 32; the annular bushing 35 is positioned in the second annular cavity, the second annular cavity is divided into a second annular cavity upper part 43 and a second annular cavity lower part 44, the inner wall of the annular bushing 35 is tightly attached to the inner valve core 34, and the outer wall of the annular bushing is fixedly connected with the main valve body 31; sealing rings for sliding sealing are arranged between the inner valve core 34 and the main valve body 31 and between the inner valve core 34 and the annular bushing 35.
The outer spring 36 is positioned in the second annular chamber lower part 44, and two ends of the outer spring are respectively connected with the outer valve core 32 and the annular bushing 35; the cover plate 33 is positioned on the upper part of the inner valve core 34 and is fixedly connected with the main valve body 31; a groove is formed in the middle of the upper end of the inner valve core 34, a protrusion matched with the groove is arranged on the cover plate 33, the protrusion presses the inner spring 37 in the groove, two ends of the inner spring 37 are respectively connected with the protrusions of the inner valve core 34 and the cover plate 33, and a sealing ring is arranged between the protrusion and the groove; the raised structure serves on the one hand to achieve a structurally compact and lightweight design and on the other hand to achieve a sealing of the recess.
The inner valve core 34 is provided with a T-shaped through hole for communicating the groove with the inner inlet and outlet cavity 45, the outer valve core 32 is provided with an axial through hole for communicating the inner inlet and outlet cavity 45 with the outlet 39 and a radial through hole for communicating the inner inlet and outlet cavity 45 with the outer inlet and outlet cavity 42, and the outlet end of the axial through hole is fixedly provided with a throttling nail 5.
The inlet 25 of the first auxiliary valve 11 is sequentially communicated with the first annular cavity 41 of the first main valve 13 and the first annular cavity 41 of the second main valve 14 through flow passages, and the inlet 25 of the second auxiliary valve 12 is sequentially communicated with the second annular cavity upper part 43 of the first main valve 14 and the second annular cavity upper part 43 of the second main valve 14 through flow passages.
In order to improve the tightness of the outlet 39, an outer outlet valve seat 61 which is annularly raised is axially arranged on the inner wall of the main valve body 31, and a sealing ring is arranged at the contact part of the outer valve core 32 and the outer outlet valve seat 61; the outer valve core 32 is provided with an inner outlet valve seat 62 with an annular protrusion along the axial direction at the inlet end of the axial through hole, and a sealing gasket is arranged on the inner valve core 34 at the contact part with the inner outlet valve seat 62.
In this embodiment, the first auxiliary valve 11 and the second auxiliary valve 12 are used to control the on-off of gas and the direction change management of charging and discharging, the inlet 38 and the outlet 39 of the first main valve 13 are respectively a fuel inlet and a fuel outlet, the inlet 38 and the outlet 39 of the second main valve 14 are respectively an oxidant inlet and an oxidant outlet, and the two-component variable-flow electromagnetic pilot control valve can realize the synchronous variable-flow control of the two-component medium and is provided with a large-flow working condition and a small-flow working condition.
Under the large-flow working condition, the auxiliary valve coil 23 of the second auxiliary valve 12 is electrified, the air inlet 25, the air inlet and outlet cavity 27 and the air outlet 26 of the second auxiliary valve 12 are communicated, the auxiliary valve coil 23 of the first auxiliary valve 11 is deenergized, the air inlet 25 of the first auxiliary valve 11 is disconnected with the air inlet and outlet cavity 27, gas enters from the air inlet 25 of the first auxiliary valve 11, is filled into the first annular cavity 41 of the first main valve 13 and the second main valve 14 through a flow passage, acts on the outer valve cores 32 of the first main valve 13 and the second main valve 14, so that the outer valve cores 32 and the inner valve cores 34 of the first main valve 13 and the second main valve 14 move upwards together, a gap is formed between the outer valve cores 32 and the outer outlet valve seats of the first main valve 13, the outer inlet and outlet cavities 42 of the first main valve 13 are communicated with the fuel outlet, and the oxidant inlet and outer inlet and outlet cavities 42 of the second main valve 14 are communicated with the oxidant outlet.
Under the working condition of small flow, the auxiliary valve coil 23 of the first auxiliary valve 11 is electrified, the air inlet 25, the air inlet and outlet cavity 27 and the air outlet 26 of the first auxiliary valve 11 are communicated, the auxiliary valve coil 23 of the second auxiliary valve 12 is powered off, the air inlet 25 of the second auxiliary valve 12 is disconnected with the air inlet and outlet cavity 27, gas enters the second annular cavity upper part 43 filled into the first main valve 13 and the second main valve 14 through a flow passage from the air inlet 25 of the second auxiliary valve 12 and acts on the inner valve core 34 of the first main valve 13 and the second main valve 14, so that the outer valve cores 32 of the first main valve 13 and the second main valve 14 are static, the inner valve core 34 moves upwards, and a gap is formed between the inner valve core 34 and the inner outlet valve seat of the first main valve 13 and the second main valve 14; the fuel inlet, the outer inlet and outlet cavity 42 of the first main valve 13, the radial through hole of the outer valve core 32 of the first main valve 13, the inner inlet and outlet cavity 45 of the first main valve 13, the axial through hole of the outer valve core 32 of the first main valve 13 and the fuel outlet are communicated, the oxidant inlet, the outer inlet and outlet cavity 42 of the second main valve 14, the radial through hole of the outer valve core 32 of the second main valve 14, the inner inlet and outlet cavity 45 of the second main valve 14, the axial through hole of the outer valve core 32 of the second main valve 14 and the oxidant outlet are communicated, and the throttle nail 5 is used for accurately adjusting the flow resistance characteristic of the low-flow working condition; the T-shaped through hole of the inner valve core 34 is used for guiding the medium to the groove where the inner spring 37 is located under the working condition of low flow, and the medium provides downward pressing force for the inner valve core 34 in the groove, so that the inner valve core 34 is closed, the spring force of the inner spring 37 is reduced, and the small-size and light-weight design of the control valve structure is realized.
The above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and it is obvious for a person skilled in the art to modify the specific technical solutions described in the foregoing embodiments or to substitute part of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions protected by the present invention.
Claims (4)
1. A double-component variable flow electromagnetic pilot control valve is characterized in that: comprises a first auxiliary valve (11), a second auxiliary valve (12), a first main valve (13) and a second main valve (14);
the first auxiliary valve (11) and the second auxiliary valve (12) are identical in structure and respectively comprise an auxiliary valve body (21), an auxiliary valve core (22), an auxiliary valve coil (23) and an auxiliary valve spring (24); the auxiliary valve body (21) is provided with an air inlet (25) and an air outlet (26); an auxiliary valve core (22) is arranged in the auxiliary valve body (21), one end of the auxiliary valve core (22) corresponds to the air inlet (25), the other end of the auxiliary valve core (22) corresponds to the air outlet (26), and an auxiliary valve spring (24) is arranged between the end part of the auxiliary valve core (22) and the auxiliary valve body (21); an air inlet and outlet cavity (27) communicated with an air inlet (25) and an air outlet (26) is formed between the auxiliary valve core (22) and the auxiliary valve body (21); the auxiliary valve coil (23) is arranged in the auxiliary valve body (21);
the first main valve (13) and the second main valve (14) are identical in structure and respectively comprise a main valve body (31), an outer valve core (32), a cover plate (33), an inner valve core (34), an annular bushing (35), an outer spring (36) and an inner spring (37);
the main valve body (31) is provided with an inlet (38) and an outlet (39); an outer valve core (32) is arranged in the main valve body (31), a first annular cavity (41) is formed between the outer valve core (32) and the main valve body (31), and an outer inlet and outlet cavity (42) for communicating the inlet (38) with the outlet (39);
a guide hole is formed in the middle of the upper end of the outer valve core (32), the inner valve core (34) is positioned at the upper part of the outer valve core (32), the lower end of the inner valve core (34) extends into the guide hole, a second annular cavity is formed among the main valve body (31), the inner valve core (34) and the outer valve core (32), and an inner inlet and outlet cavity (45) is formed among the inner valve core (34) and the outer valve core (32);
the annular bushing (35) is positioned in the second annular cavity, the second annular cavity is divided into a second annular cavity upper part (43) and a second annular cavity lower part (44), the inner wall of the annular bushing (35) is tightly attached to the inner valve core (34), and the outer wall of the annular bushing is fixedly connected with the main valve body (31); the outer spring (36) is positioned in the lower part (44) of the second annular cavity, and two ends of the outer spring are respectively connected with the outer valve core (32) and the annular bushing (35);
the cover plate (33) is positioned at the upper part of the inner valve core (34) and is fixedly connected with the main valve body (31); a groove is formed in the middle of the upper end of the inner valve core (34), a protrusion matched with the groove is formed in the cover plate (33), the inner spring (37) is located in the groove, and two ends of the inner spring are connected with the protrusion of the inner valve core (34) and the protrusion of the cover plate (33) respectively;
the outer valve core (32) is provided with an axial through hole for communicating the inner inlet and outlet cavity (45) with the outlet (39) and a radial through hole for communicating the inner inlet and outlet cavity (45) with the outer inlet and outlet cavity (42); the inner valve core (34) is provided with a through hole for communicating the groove with the inner inlet and outlet cavity (45);
the air inlet (25) of the first auxiliary valve (11) is sequentially communicated with the first annular cavity (41) of the first main valve (13) and the first annular cavity (41) of the second main valve (14) through flow channels, and the air inlet (25) of the second auxiliary valve (12) is sequentially communicated with the upper portion (43) of the second annular cavity of the first main valve (14) and the upper portion (43) of the second annular cavity of the second main valve (14) through flow channels.
2. The two-component variable-flow electromagnetic pilot control valve according to claim 1, characterized in that: and a throttling nail (5) is arranged at the outlet end of the axial through hole.
3. The two-component variable-flow electromagnetic pilot control valve according to claim 2, characterized in that: an outer outlet valve seat (61) which is annularly raised is axially arranged on the inner wall of the main valve body (31), and a sealing ring is arranged at the contact position of the outer valve core (32) and the outer outlet valve seat; an annular raised inner outlet valve seat (62) is axially arranged at the inlet end of the axial through hole of the outer valve core (32), and a sealing gasket is arranged at the contact position of the inner valve core (34) and the inner outlet valve seat.
4. The two-component variable-flow electromagnetic pilot control valve according to claim 3, characterized in that: sealing rings are arranged between the outer valve core (32) and the main valve body (31) and between the outer valve core (32) and the inner valve core (34); and sealing rings are arranged between the inner valve core (34) and the main valve body (31), between the inner valve core (34) and the annular bushing (35), and between the inner valve core (34) and the cover plate (33) in a protruding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108344.0A CN113882972B (en) | 2021-09-22 | 2021-09-22 | Double-component variable flow electromagnetic pilot control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108344.0A CN113882972B (en) | 2021-09-22 | 2021-09-22 | Double-component variable flow electromagnetic pilot control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113882972A CN113882972A (en) | 2022-01-04 |
| CN113882972B true CN113882972B (en) | 2022-07-05 |
Family
ID=79009803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111108344.0A Active CN113882972B (en) | 2021-09-22 | 2021-09-22 | Double-component variable flow electromagnetic pilot control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113882972B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991996A (en) * | 2022-05-25 | 2022-09-02 | 西安航天动力研究所 | Pneumatic control high-pressure variable flow control valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997038363A1 (en) * | 1996-04-04 | 1997-10-16 | The Curators Of The University Of Missouri | Low operating power, fast-response servovalve |
| CN201982717U (en) * | 2011-04-01 | 2011-09-21 | 蒋可贞 | Double-channel electromagnetic valve |
| CN102425581A (en) * | 2011-12-12 | 2012-04-25 | 太原理工大学 | Pilot flow closed-loop controlled flow valve and control method |
| CN203477329U (en) * | 2013-08-19 | 2014-03-12 | 南京理工大学 | High-pressure solenoid valve of parallel valve core type |
| CN105570470A (en) * | 2015-12-20 | 2016-05-11 | 西安航天动力研究所 | Built-in pilot operated solenoid valve |
| CN109899566A (en) * | 2019-04-02 | 2019-06-18 | 沈阳航天新光集团有限公司 | A kind of pilot-operated type air-operated solenoid valve |
-
2021
- 2021-09-22 CN CN202111108344.0A patent/CN113882972B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997038363A1 (en) * | 1996-04-04 | 1997-10-16 | The Curators Of The University Of Missouri | Low operating power, fast-response servovalve |
| CN201982717U (en) * | 2011-04-01 | 2011-09-21 | 蒋可贞 | Double-channel electromagnetic valve |
| CN102425581A (en) * | 2011-12-12 | 2012-04-25 | 太原理工大学 | Pilot flow closed-loop controlled flow valve and control method |
| CN203477329U (en) * | 2013-08-19 | 2014-03-12 | 南京理工大学 | High-pressure solenoid valve of parallel valve core type |
| CN105570470A (en) * | 2015-12-20 | 2016-05-11 | 西安航天动力研究所 | Built-in pilot operated solenoid valve |
| CN109899566A (en) * | 2019-04-02 | 2019-06-18 | 沈阳航天新光集团有限公司 | A kind of pilot-operated type air-operated solenoid valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113882972A (en) | 2022-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5404902A (en) | Isolation automatic control valve | |
| US4175589A (en) | Fluid pressure drive device | |
| CN106989195B (en) | Pilot-operated electromagnetic pneumatic valve and combined control valve | |
| CN113882972B (en) | Double-component variable flow electromagnetic pilot control valve | |
| US9279433B2 (en) | Poppet valve assembly for controlling a pneumatic actuator | |
| US20140026985A1 (en) | Electro-proportional pilot operated poppet valve with pressure compensation | |
| KR20010052471A (en) | Double safety valve | |
| CN109595098B (en) | Mixing ratio multi-opening regulating valve of liquid rocket engine | |
| US4971115A (en) | Four-way poppet valve with hollow stem and four-port body | |
| EP2980463B1 (en) | Bidirectional electromagnetic valve | |
| US6786236B2 (en) | Electrohydraulic servo valve | |
| CN106195399B (en) | Guide electromagnetic valve | |
| CN109538562B (en) | Pilot valve sleeve control type switch valve | |
| US6390078B1 (en) | Two stage concentric EGR valves | |
| CN114935035A (en) | Pneumatic control electromagnetic valve for hypersonic aircraft | |
| CN107850231A (en) | Magnetic valve | |
| CN113048243A (en) | Valve body and step-by-step direct-acting electromagnetic valve | |
| CN109296575B (en) | Pilot control type switch valve | |
| CN106989196A (en) | A kind of electromagnetic actuator device and guide type electromagnetic pneumatic operated valve | |
| CN220749184U (en) | Modular combined valve structure | |
| CN217713831U (en) | Electromagnetic valve with compact structure | |
| EP4311963A1 (en) | Two-way solenoid valve with three ports | |
| JPH0514063Y2 (en) | ||
| CN214331580U (en) | Two tee bend control valves of fluid pressure | |
| CN112066070B (en) | Variable flow electromagnetic pilot control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |