CN113418009B - Self-locking valve - Google Patents
Self-locking valve Download PDFInfo
- Publication number
- CN113418009B CN113418009B CN202110572549.8A CN202110572549A CN113418009B CN 113418009 B CN113418009 B CN 113418009B CN 202110572549 A CN202110572549 A CN 202110572549A CN 113418009 B CN113418009 B CN 113418009B
- Authority
- CN
- China
- Prior art keywords
- locking
- valve core
- assembly
- valve
- ring
- 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
- 239000000306 component Substances 0.000 claims description 12
- 239000008358 core component Substances 0.000 claims description 10
- 230000005389 magnetism Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 7
- 108091092878 Microsatellite Proteins 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 6
- 210000004907 gland Anatomy 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011990 functional testing Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- F16K27/029—Electromagnetically actuated valves
-
- 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
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- 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
Abstract
The invention discloses a self-locking valve, which comprises a housing cover, wherein a coil assembly is arranged on the left side of the interior of the housing cover, a locking magnetic ring is arranged at the right end of the coil assembly and positioned in the housing cover, a locking sleeve is arranged at the right end of the locking magnetic ring, a locking valve core assembly is arranged in the coil assembly, a valve core sleeve assembly is arranged at the right end of the housing cover, a valve seat is arranged in the valve core sleeve assembly through a compression nut, a filter is arranged between the valve core sleeve assembly and the left end of the valve seat, the left end of the valve seat is contacted with the locking valve core assembly, a housing nut is arranged at the left end of the housing cover, a magnetic conduction semi-ring is wrapped at the outer side of the locking magnetic ring in the housing cover, the width of the magnetic conduction semi-ring is equal to the width of the locking magnetic ring, and magnetic isolation gaskets are arranged at two ends of the locking valve core assembly. The invention is mainly applied to microsatellites and has the advantages of simple structure, light weight, small volume and the like.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a self-locking valve.
Background
The existing self-locking valve is an electromagnetic valve with two stable states of opening and closing, and the domestic self-locking valve is widely applied to attitude and orbit control power systems in the fields of spaceship, satellite and the like, and comprises satellites such as a Shenzhou airship series, a freight airship, a Oriental red No. two, a Oriental red No. three, a Fengyun No. two and the like.
Most of the existing self-locking valves adopt all-welded structures, a certain space is reserved for inlet and outlet pipelines, most of working pressures are below 35MPa, the circulation caliber is larger than 1mm, the manufacturing process flow is complex, the operation is complex, the working efficiency is reduced, and the cost is very high. Therefore, the self-locking valve is provided, an independent coil structure is adopted, a coil assembly can be independently prepared and detected, the preparation can be carried out without depending on the valve shell, and the process series connection links are reduced; by adopting an independent functional structure, the system can complete the functional test of the system before the system is assembled, and simultaneously complete the multifunctional integrated design with other functional combinations, thereby being applicable to application scenes with narrow space and high functional modularization integration level; the working pressure of the product exceeds 40MPa, the circulation caliber is 0.3mm, and the product is specially designed for electric propulsion, micro-cow-level cold air propulsion and other applications; the whole structure is simple in design, the movable connection structures are adopted, the preparation process can be completed in parallel, parts can be assembled according to the drawing after being sleeved in a uniform manner, the parts can be disassembled and repaired in the assembly test process, the working efficiency is greatly improved, and the preparation cost is reduced.
Disclosure of Invention
The invention aims to provide a self-locking valve, which adopts an independent coil, an integral plug-in type and a movable connection structure, abandons an all-welded structure, reduces the size of the self-locking valve, improves the flexibility of the self-locking valve in system integration, improves the working efficiency of the preparation of the self-locking valve and reduces the cost.
The invention is achieved by a self-locking valve comprising:
the valve seat is provided with a filter, a locking valve core assembly is arranged between the valve seat and the blind hole of the valve core sleeve assembly, a locking sleeve, a locking magnetic ring and a shell are sleeved outside the valve core sleeve assembly, the coil assembly is wound on the shell, and a magnetic conduction semi-ring is wrapped outside the locking magnetic ring.
Preferably, as one preferable aspect of the present invention, the valve core sleeve assembly is fixed to an open end of the housing cover.
Preferably, as a preferable mode of the invention, the head part of one end of the valve core sleeve assembly penetrates through the through hole of the closed end of the housing cover, and the head part of the valve core sleeve assembly is in threaded connection with the housing nut.
Preferably, as a preferable mode of the invention, an annular groove is formed on the outer side of a part, which is positioned outside the housing cover, of the valve core sleeve assembly, and a first check ring and a first gasket are sleeved in the annular groove in sequence.
Preferably, as one preferable mode of the invention, the tail part of the valve seat is provided with a ring groove, and a second gasket and a second check ring are sequentially arranged in the ring groove.
Preferably, as a preferable mode of the invention, a magnetism isolating gasket is arranged between the locking valve core component and the blind hole of the valve core sleeve component, and a magnetism isolating gasket is also arranged between the locking valve core component and the head of the valve seat.
Preferably, as one preferable aspect of the present invention, the locking valve core assembly is a cylindrical structure, and a through hole is formed in the middle.
Preferably, as one preferable aspect of the present invention, one end of the locking valve core assembly is connected with a spring through a positioning nut, and one end of the spring is connected with a convex-shaped blocking block arranged in the through hole.
Preferably, as a preferable mode of the present invention, a spacer is provided between the blocking member and the spring.
Preferably, as one preferred aspect of the present invention, the coil assembly has two sets of coils capable of generating magnetic fields in opposite directions.
Compared with the prior art, the invention has the beneficial effects that:
the invention is mainly applied to an electric propulsion system and a micro-cow propulsion system and has the advantages of simple structure, light weight, small volume, low cost and the like.
Drawings
FIG. 1 is a schematic diagram of a self-locking valve according to the present invention;
FIG. 2 is a schematic illustration of a valve core sleeve assembly;
fig. 3 is a schematic view of a valve seat structure.
In the figure: the valve comprises a valve core assembly 1, a coil assembly 2, a valve core sleeve assembly 3, a filter 4, a valve seat 5, a cover shell 6, a locking sleeve 7, a locking magnetic ring 8, a compression nut 9, a magnetism isolating gasket 10, a magnetism conducting semi-ring 11, a cover nut 12, a first gasket 13, a first check ring 14, a second gasket 15, a second check ring 16, a cover shell 17 and a spring 18.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, in the description of the present invention, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected via an intermediary, or connected by communication between two elements. It will be understood by those of ordinary skill in the art that the specific meaning of "a plurality of" in the present invention is two or more, unless explicitly defined otherwise, by the specific meaning as appropriate.
The invention provides a self-locking valve, which adopts an independent coil structure, a coil assembly can be independently prepared and detected without depending on the valve shell to be molded, and the process series link is reduced; by adopting an independent functional structure, the system can complete the functional test of the system before the system is assembled, and simultaneously complete the multifunctional integrated design with other functional combinations, thereby being applicable to application scenes with narrow space and high functional modularization integration level; the working pressure of the invention exceeds 40MPa, the circulation caliber is 0.3mm, and the invention is specially designed for electric propulsion, micro-cow grade cold air propulsion and other applications; the whole structure is simple in design, the movable connection structures are adopted, the preparation process can be completed in parallel, parts can be assembled according to the drawing after being sleeved in a uniform manner, the parts can be disassembled and repaired in the assembly test process, the working efficiency is greatly improved, and the preparation cost is reduced.
As shown in fig. 1, the present invention provides a self-locking valve: comprising the following steps:
the thin-walled cylindrical housing cover 6, one end of the housing cover 6 is open, the other end is closed and has a through hole structure, one end of the valve core sleeve component 3 has a step structure, the valve core sleeve component 3 passes through the open end of the housing cover 6 and is fixedly connected with the open end of the housing cover 6, the head of one end of the valve core sleeve component 3, which has a step structure, passes through the through hole of the closed end of the housing cover 6, the housing nut 12 is in threaded connection with the head of the valve core sleeve component 3, and the valve core sleeve component 3 and the housing cover 6 are fixed together. The outside that is located the outside position of cover cap 6 of case cover subassembly 3 opens there is the annular, and the annular is interior to be overlapped in proper order to be equipped with first retaining ring 14 and first packing ring 13, and the centre of case cover subassembly 3 is opened there is the step blind hole, gland nut 9 stretch into in the blind hole and through threaded connection in the tip of case cover subassembly 3, the centre of gland nut 9 is opened there is the through-hole, the shaft-like disk seat 5 passes gland nut 9's through-hole, gland nut 9 fixes disk seat 5 at case cover subassembly 3 inner chamber, install annular filter 4 between disk seat 5 and the gland nut 9, filter 4 installs at disk seat entry front end. The valve seat 5 is also provided with a plurality of pore canals which are communicated with the filter 4, the tail part (right end shown in figure 1) of the valve seat 5 is provided with a ring groove, a second gasket 15 and a second retainer 16 are sequentially arranged in the ring groove, a locking valve core component 1 is arranged between the valve seat 5 and a blind hole of the valve core sleeve component 3, the locking valve core component 1 is of a cylindrical structure, a through hole is arranged in the middle, one end of the locking valve core component 1 is connected with a spring 18 through a positioning nut, the other end of the spring 18 is connected with a convex-shaped blocking block 19 arranged in the through hole, a gasket is further arranged between the blocking block 19 and the spring 18, a magnetism isolating gasket 10 is arranged between the locking valve core component 1 and the blind hole of the valve core sleeve component 3, a magnetism isolating gasket 10 is also arranged between the locking valve core component 1 and the head of the valve seat 5, a cavity is formed between the magnetism isolating gasket 10 and the head of the valve seat 5, and the blocking block 19 of the valve core component 1 is provided with a through hole in the middle of the valve seat 5 under the action of the spring 18. A locking sleeve 7, a locking magnetic ring 8 and a shell sleeve 17 are sequentially arranged in an annular cavity formed between the valve core sleeve assembly 3 and the housing cover 6, the locking magnetic ring 8 is a permanent magnet, the coil assembly 2 is wound on the shell sleeve 17, the coil assembly 2 is provided with two groups of coils with opposite magnetic field directions, the shell sleeve 17 is sleeved on the valve core sleeve assembly 3, and the magnetic conducting semi-ring 11 is wrapped outside the locking magnetic ring 8, so that the magnetic conducting effect can be achieved. The width of the magnetic conduction semi-ring 11 is equal to the width of the locking magnetic ring 8, so that the locking magnetic ring is wrapped by the magnetic conduction semi-ring.
The invention has the beneficial effects that: when the valve needs to be started, the coil assembly 2 generates a magnetic field consistent with the locking magnetic ring 8, and the magnetic field acts on the locking valve core assembly 1 to overcome the pressure of the spring 18, so that the locking valve core assembly 1 moves to the left side as shown in fig. 1, a tiny gap is generated between the locking valve core assembly 1 and the valve seat 5, and a loop is formed between a through hole in the middle of the valve seat 5 and a pore canal communicated with the filter. When the valve needs to be closed, the coil assembly 2 generates a magnetic field opposite to the locking magnetic ring 8, and the magnetic field can offset a part of the locking magnetic ring 8, so that the force acting on the locking valve core assembly 1 is smaller than the pressure of the spring 18, and the locking valve core assembly 1 is driven to move rightward to seal the through hole of the valve seat 5.
The invention is mainly applied to microsatellites and has the advantages of simple structure, light weight, small volume and the like.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A self-locking valve, comprising:
the valve seat is provided with a filter, a locking valve core assembly is arranged between the valve seat and the blind hole of the valve core sleeve assembly, a locking sleeve, a locking magnetic ring and a shell are sleeved outside the valve core sleeve assembly, the coil assembly is wound on the shell, and a magnetic conduction semi-ring is wrapped outside the locking magnetic ring;
the locking valve core component is of a cylindrical structure, and a through hole is formed in the middle of the locking valve core component;
one end of the locking valve core assembly is connected with a spring through a positioning nut, and one end of the spring is connected with a convex-shaped blocking block arranged in the through hole;
the coil assembly has two sets of coils that are capable of generating magnetic fields in opposite directions.
2. A latching valve according to claim 1, wherein: the valve core sleeve component is fixed with the opening end of the cover shell.
3. A latching valve according to claim 2, wherein: the head of one end of the valve core sleeve component passes through the through hole of the closed end of the housing cover, and the head of the valve core sleeve component is in threaded connection with the housing nut.
4. A latching valve according to claim 1, wherein: the outside of the part of the valve core sleeve component, which is positioned outside the housing cover, is provided with a ring groove, and a first check ring and a first gasket are sleeved in the ring groove in sequence.
5. A latching valve according to claim 1, wherein: the tail of the valve seat is provided with a ring groove, and a second gasket and a second check ring are sequentially arranged in the ring groove.
6. A latching valve according to claim 1, wherein: a magnetism isolating gasket is arranged between the locking valve core assembly and the blind hole of the valve core sleeve assembly, and a magnetism isolating gasket is also arranged between the locking valve core assembly and the head of the valve seat.
7. A latching valve according to claim 1, wherein: a gasket is arranged between the blocking block and the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110572549.8A CN113418009B (en) | 2021-05-25 | 2021-05-25 | Self-locking valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110572549.8A CN113418009B (en) | 2021-05-25 | 2021-05-25 | Self-locking valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113418009A CN113418009A (en) | 2021-09-21 |
| CN113418009B true CN113418009B (en) | 2024-02-09 |
Family
ID=77712837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110572549.8A Active CN113418009B (en) | 2021-05-25 | 2021-05-25 | Self-locking valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113418009B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201413753Y (en) * | 2009-04-22 | 2010-02-24 | 宁波华液机器制造有限公司 | Wet-type electromagnet used for explosion-proof hydraulic valve |
| CN102829233A (en) * | 2011-06-15 | 2012-12-19 | 上海空间推进研究所 | Pneumatic self-locking valve |
| CN106015591A (en) * | 2016-05-23 | 2016-10-12 | 上海空间推进研究所 | Novel high-pressure one-way self-locking valve |
| CN205918987U (en) * | 2016-06-28 | 2017-02-01 | 河南航天液压气动技术有限公司 | Diaphragm latching valve |
| CN206190911U (en) * | 2016-08-29 | 2017-05-24 | 河南航天液压气动技术有限公司 | Take pressure compensation's floating case and use latching valve of this case |
| CN107061841A (en) * | 2017-03-31 | 2017-08-18 | 佛山市优嘉绿化园艺有限公司 | Magnetic valve with auto-lock function |
| CN206608601U (en) * | 2017-03-31 | 2017-11-03 | 佛山市优嘉绿化园艺有限公司 | Magnetic valve with auto-lock function |
| CN109695770A (en) * | 2019-01-25 | 2019-04-30 | 北京控制工程研究所 | A kind of simply highly reliable miniature self-locking valve of structure |
-
2021
- 2021-05-25 CN CN202110572549.8A patent/CN113418009B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201413753Y (en) * | 2009-04-22 | 2010-02-24 | 宁波华液机器制造有限公司 | Wet-type electromagnet used for explosion-proof hydraulic valve |
| CN102829233A (en) * | 2011-06-15 | 2012-12-19 | 上海空间推进研究所 | Pneumatic self-locking valve |
| CN106015591A (en) * | 2016-05-23 | 2016-10-12 | 上海空间推进研究所 | Novel high-pressure one-way self-locking valve |
| CN205918987U (en) * | 2016-06-28 | 2017-02-01 | 河南航天液压气动技术有限公司 | Diaphragm latching valve |
| CN206190911U (en) * | 2016-08-29 | 2017-05-24 | 河南航天液压气动技术有限公司 | Take pressure compensation's floating case and use latching valve of this case |
| CN107061841A (en) * | 2017-03-31 | 2017-08-18 | 佛山市优嘉绿化园艺有限公司 | Magnetic valve with auto-lock function |
| CN206608601U (en) * | 2017-03-31 | 2017-11-03 | 佛山市优嘉绿化园艺有限公司 | Magnetic valve with auto-lock function |
| CN109695770A (en) * | 2019-01-25 | 2019-04-30 | 北京控制工程研究所 | A kind of simply highly reliable miniature self-locking valve of structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113418009A (en) | 2021-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6994308B1 (en) | In-tube solenoid gas valve | |
| US7322562B2 (en) | Shut-off valve providing pressure equalization | |
| KR20130035982A (en) | Control valve | |
| US10030785B2 (en) | Valve for fuel cell | |
| US10920900B2 (en) | Fuel supply valve for fuel cell system | |
| US5522424A (en) | Controlling the flow of fluids using solenoid-actuated valves | |
| CN106895194B (en) | Small high-pressure self-locking valve | |
| WO2013036572A1 (en) | High flow outward opening gaseous injector for automotive applications | |
| CN217519318U (en) | Electromagnetic pneumatic control two-way valve | |
| CN101273193A (en) | Solenoid isolation valve | |
| CN109899566A (en) | A kind of pilot-operated type air-operated solenoid valve | |
| CN113418009B (en) | Self-locking valve | |
| WO2022054746A1 (en) | Flow-switching solenoid valve | |
| CN107401630B (en) | Miniature self-locking valve and its control method | |
| JP2005227859A (en) | Regulator for gas | |
| CN213808878U (en) | Electromagnetic valve | |
| CN106015591A (en) | Novel high-pressure one-way self-locking valve | |
| WO2018119082A1 (en) | Passive valve for a fuel injector with a tension spring, fuel injector and methods for producing the same | |
| CN112555426B (en) | Double-control valve with high reliability for cabin double-pressure | |
| CN211175490U (en) | Electromagnetic pilot four-way valve | |
| CN218719062U (en) | Electromagnetic pneumatic pressure stabilizing valve structure | |
| WO2007045067A1 (en) | In-tube solenoid gas valve | |
| CN112049947A (en) | Valve structure and liquid engine | |
| CN218376688U (en) | Gas cut-off valve | |
| CN220505838U (en) | High-precision flow control proportional electromagnetic 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 |