CN113090804A - High-reliability magnetic lock type self-locking valve device - Google Patents
High-reliability magnetic lock type self-locking valve device Download PDFInfo
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- CN113090804A CN113090804A CN202110342285.7A CN202110342285A CN113090804A CN 113090804 A CN113090804 A CN 113090804A CN 202110342285 A CN202110342285 A CN 202110342285A CN 113090804 A CN113090804 A CN 113090804A
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- armature
- coil assembly
- locking
- assembly
- valve device
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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
- F16K31/0644—One-way valve
- F16K31/0655—Lift 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
- F16K31/02—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
- F16K31/0679—Electromagnet aspects, e.g. electric supply therefor with more than one energising coil
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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
- F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
- F16K31/082—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet using a electromagnet and a permanent magnet
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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
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/16—Means to prevent accidental or unauthorised actuation with locking member actuated by magnet
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides a high-reliability magnetic lock type self-locking valve device which comprises a coil assembly, a reed assembly and a valve seat. The coil assembly and the spring assembly are both arranged in the valve seat; the reed component controls the on-off of the valve seat; when the coil assembly is powered on, the spring assembly is driven to open or close the valve seat, and when the coil assembly is powered off, the spring assembly is kept at the position when the coil assembly is powered off. The armature is connected and clamped at two ends by two reeds, so that the moving part is suspended, no friction is generated in the action process of the moving part, the reeds clamping the moving part adopt a structure with a plurality of S-shaped ribs, the volume and the weight of the valve are reduced, and the permanent magnet, the armature, the coil assembly and the valve seat jointly form a magnetic loop to control the opening and closing of the valve; the valve seat is used for pressing and attaching the nonmetal sealing element, realizes reliable sealing in a closing state, and forms a magnetic loop together with the coil assembly and the spring assembly to control the opening and closing of the valve. The invention has the advantages of reliable sealing, more times of actions, high reliability, long service life, light weight and quick response.
Description
Technical Field
The invention relates to the field of space stations, in particular to a high-reliability magnetic lock type self-locking valve device.
Background
The high-reliability magnetic lock type self-locking valve device is an important component in space stations and micro satellite orbit control systems.
The construction of the space station is the key project in the aerospace field in recent years in China, and the near earth orbit space station or moon and mars orbit space station is required to have the service life of more than 10 years. Failure of the valve operation can have fatal consequences. Therefore, the self-locking valve needs to have stable long-term working performance and high reliability.
In addition, the microsatellite has low investment and operation cost, short system construction period, high technical performance and strong flexibility, and the application value and potential in the fields of scientific experiments, remote sensing, communication, navigation, tactical application and the like are continuously improved. A large-scale small satellite constellation plan is provided in the field, constellation networking becomes an important way for the small satellite to exert the efficiency, and the small satellite constellation plan is one of the main trends of the future development of satellite propulsion systems and has wide application prospects. The common requirements of the self-locking valve in the satellite field are long service life and high reliability.
In order to meet the requirements of a propulsion system, a long-service-life self-locking valve is necessary to be developed and applied to the fields of a microsatellite propulsion system, manned space flight, deep space exploration and the like.
According to the requirements of space stations and microsatellites, the working media of the valve are methyl hydrazine (MMH) and green dinitrogen tetroxide (MON-1), and the number of the service life of the work task is accumulated (more than or equal to 1 multiplied by 10)5Second) is very much, and the sealing requirement is very high (the inner leakage rate is less than or equal to1×10-6Pa·m3S, external leakage rate less than or equal to 1 x 10-7Pa·m3/s)。
The high-reliability magnetic lock type self-locking valve device is different from the traditional magnetic lock type self-locking valve in that the working times and the leakage rate of the traditional magnetic lock type self-locking valve can not meet the severe requirements, and the high-reliability magnetic lock type self-locking valve device can not be used in occasions with long service life and high reliability in space stations and microsatellites. The moving piece of the high-reliability magnetic lock type self-locking valve device is connected at two ends by the reeds, so that the moving piece is suspended and does not directly contact and rub with the inner wall of the coil, and the action failure caused by surface abrasion is avoided. The traditional magnetic lock type self-locking valve has the working times of 1 multiplied by 103Surface abrasion caused by friction after the operation easily causes the jamming of the moving part, the movement of the moving part is not smooth, and the final action fails along with the increase of the action times (the failure probability increases along with the increase of the action times, and the failure times are generally 1 multiplied by 103sub-1X 104Between the next time). The high-reliability magnetic lock type self-locking valve device reaches 1 multiplied by 105The number of times of the secondary action is not failed,
the reed of the high-reliability magnetic locking type self-locking valve device adopts a plurality of S-shaped rib structures, and the traditional reed has extremely large required volume if meeting the requirement that the structural stress does not exceed the fatigue limit under the condition of generating required elasticity, so that the valve cannot meet the requirements of a spacecraft on volume miniaturization and light weight, and cannot be applied to long-term in-orbit spacecraft such as space stations and the like in the field of spaceflight. Under the condition that the S-shaped reed generates the required elastic force, the structural stress is far smaller than that of the traditional reed, the volume required by the S-shaped reed not exceeding the fatigue limit is far smaller than that of the traditional reed structure, the volume and the weight of the valve are greatly reduced, the requirements of the spacecraft on volume miniaturization and light weight can be met, and the S-shaped reed is applied to the field of space stations.
At present, a high-reliability magnetic lock type self-locking valve device is not available at home, a design scheme of a similar principle at abroad has no public data, and descriptions and reports of similar technologies of the invention are not discovered at all, so that the high-reliability magnetic lock type self-locking valve device belongs to a new design field.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a high-reliability magnetic locking type self-locking valve device.
According to the invention, the high-reliability magnetic lock type self-locking valve device comprises a valve seat, a coil assembly and a spring assembly, wherein:
the reed component controls the on-off of the valve seat;
when the coil assembly is powered on, the spring assembly is driven to open or close the valve seat, and when the coil assembly is powered off, the spring assembly is kept at the position when the coil assembly is powered off.
Preferably, the coil assembly comprises two spiral coils in forward and reverse directions, providing forward and reverse spiral currents, respectively.
Preferably, the spring assembly comprises a seal, a permanent magnet, an inner armature, an outer armature and a spring, wherein:
the sealing element is arranged on the inner armature and matched with the channel in the valve seat;
the two ends of the reed are connected with and clamp the inner armature, so that the inner armature is suspended and centered, and the inner armature is not in sliding fit with the outer armature;
the permanent magnet is embedded in the outer armature.
Preferably, the permanent magnet comprises a plurality of arc-shaped permanent magnets which are uniformly distributed in the outer armature along the circumferential direction.
Preferably, the leaf spring comprises a plurality of perforated flexible spring leaves with a plurality of S-shaped rib structures.
Preferably, the coil assembly further comprises a housing, and the permanent magnet, the inner armature, the outer armature and the spring are all arranged in the housing.
Preferably, the permanent magnet is isolated from the working medium.
Preferably, when the power supply is cut off, the inner armature is kept at an opening or closing position by virtue of a magnetic field generated by the permanent magnet.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention has reasonable structure, ingenious design and convenient operation;
2. the invention adopts the suspended design of the moving part without sliding fit, avoids the action failure caused by surface abrasion, and can meet the requirements of high sealing reliability, multiple action times and long service life;
3. the invention adopts the multi-hole flexible spring piece with the structure of the plurality of S-shaped ribs, and the permanent magnet is embedded in the spring piece assembly, thereby reducing the structural weight of the self-locking valve, reducing the response time and meeting the requirements of light weight and quick response.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the spring assembly of the present invention.
FIG. 3 is a schematic view of the S-shaped spring of the present invention.
The figures show that:
Reed assembly 2
Seal 201
Reed 205
And valve seat 3
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a highly reliable magnetic lock type self-locking valve device, which includes a coil assembly 1, a spring assembly 2 and a valve seat 3, wherein the coil assembly, the spring assembly and the valve seat together form a magnetic circuit in two states of opening and closing. The coil assembly 1 comprises a forward spiral coil and a reverse spiral coil, and can respectively provide forward and reverse spiral currents and respectively control the opening and closing of the device.
As shown in fig. 2, the spring assembly integrated seal 201, the permanent magnet 202, the inner armature 203, the outer armature 204 and the spring 205 of the present invention are embedded in the inner cavity of the coil assembly. Wherein:
the permanent magnet 202 is arranged at one end of the coil, and a plurality of arc-shaped permanent magnets 202 which are uniformly distributed in the circumferential direction are embedded in the outer armature 204 and are isolated from the working medium; when the power is cut off, the magnetic flux generated by the permanent magnet 202 flows through the cover of the coil assembly, the armature 203 in the shell, the outer armature 204 and the valve seat to generate a locking force, so that the inner armature is controlled to be kept at the position when the power is cut off, and the position is locked in an on or off state.
The inner armature 203 is connected and clamped at two ends by the reed 205, so that the inner armature 203 of the moving part is suspended and centered without sliding fit; the reed 205 is a perforated flexible spring plate with a plurality of S-shaped ribs.
As shown in figure 1, when the valve needs to be opened, a forward coil in a control coil component 1 is electrified, an induction magnetic field is generated around the coil, a magnetic loop is formed by a permanent magnet and a component made of soft magnetic materials, an armature in a moving part overcomes medium pressure to move under the action of electromagnetic attraction force which is beneficial to opening the valve, and the device is opened. After the power is cut off, the induced magnetic field around the coil is gradually weakened until the induced magnetic field disappears, and the generated magnetic flux flows through the housing of the coil assembly, the armature 203 in the housing, the outer armature 204 and the valve seat to generate locking force, so that the inner armature is controlled to be kept at the position when the power is cut off and the position is locked at the open state;
when the valve needs to be closed, the reverse coil in the control coil component 1 is electrified, an induction magnetic field is generated around the coil, a magnetic loop is formed by the permanent magnet and the component made of soft magnetic materials, the armature in the moving part moves under the action of electromagnetic attraction which is beneficial to closing the valve, and the device is closed. After the power is cut off, the induced magnetic field around the coil is gradually weakened until the induced magnetic field disappears, and the generated magnetic flux flows through the housing of the coil assembly, the armature 203 in the housing, the outer armature 204 and the valve seat to generate locking force, so that the inner armature is controlled to be kept at the position when the power is cut off and the position is locked in the off state.
The spring plate supports the inner armature on the metal seat through pretightening force.
In the switching process of the self-locking valve, the inner armature is clamped by the reed and always keeps a certain gap with the outer armature, so that the inner armature is not contacted with the outer armature in the whole process, and friction is not generated.
As shown in fig. 3, the reed 205 adopts a plurality of S-shaped rib structures, and the S-shaped rib structures share deformation, and stress is uniformly distributed on the rib arcs of the plurality of S-shaped ribs.
The invention utilizes special structure, special material and special elastic element to meet the requirements of high sealing reliability, multiple times of actions, long service life, light weight and quick response. The opening of the high-reliability magnetic lock type self-locking valve device is 0.7mm, long-time power-on is not needed when the switch position is locked, the instantaneous power consumption of the switch is only 25.2W, and the weight of the valve is only 600 g.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. The utility model provides a high reliable magnetic locking formula self-locking valve device which characterized in that, includes disk seat, coil pack and reed subassembly, wherein:
the reed component controls the on-off of the valve seat;
when the coil assembly is powered on, the spring assembly is driven to open or close the valve seat, and when the coil assembly is powered off, the spring assembly is kept at the position when the coil assembly is powered off.
2. The high reliability magnetic locking type self-locking valve device according to claim 1, wherein the coil assembly comprises two spiral coils of forward and reverse directions, providing forward and reverse spiral currents, respectively.
3. The high reliability magnetic latching self-locking valve device according to claim 1 wherein the reed assembly comprises a seal, a permanent magnet, an inner armature, an outer armature and a reed, wherein:
the sealing element is arranged on the inner armature and matched with the channel in the valve seat;
the two ends of the reed are connected with and clamp the inner armature, so that the inner armature is suspended and centered, and the inner armature is not in sliding fit with the outer armature;
the permanent magnet is embedded in the outer armature.
4. The high reliability magnetic latching self locking valve device of claim 4 wherein the permanent magnet comprises a plurality of arc bar shaped permanent magnets evenly distributed in the outer armature along the circumferential direction.
5. The high reliability magnetic locking self locking valve device of claim 4 wherein the reed is a plurality of perforated flexible spring strips with a plurality of S-shaped rib structures.
6. The high reliability magnetic latching self-locking valve device of claim 4 wherein the coil assembly further comprises a housing, the permanent magnet, the inner armature, the outer armature and the spring are disposed within the housing.
7. The high reliability magnetic locking self locking valve assembly of claim 4 wherein the permanent magnet is isolated from the working medium.
8. The high reliability magnetic locking type self-locking valve device of claim 4, wherein when the power is off, the inner armature is kept at the open or close position by the magnetic field generated by the permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110342285.7A CN113090804B (en) | 2021-03-30 | 2021-03-30 | High-reliability magnetic lock type self-locking valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110342285.7A CN113090804B (en) | 2021-03-30 | 2021-03-30 | High-reliability magnetic lock type self-locking valve device |
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| CN113090804A true CN113090804A (en) | 2021-07-09 |
| CN113090804B CN113090804B (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110342285.7A Active CN113090804B (en) | 2021-03-30 | 2021-03-30 | High-reliability magnetic lock type self-locking valve device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669462A (en) * | 2021-08-19 | 2021-11-19 | 浙江大学 | Low-power-consumption bistable electromagnetic valve |
| CN113669461A (en) * | 2021-08-19 | 2021-11-19 | 浙江大学 | Bistable electromagnetic valve |
| WO2023019492A1 (en) * | 2021-08-19 | 2023-02-23 | 浙江大学 | Bistable solenoid valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2258940Y (en) * | 1996-05-20 | 1997-08-06 | 任明琪 | Low energy consumption magnetic holding open-close valve |
| CN2601336Y (en) * | 2002-12-27 | 2004-01-28 | 上海杰灵磁性器材有限公司 | Double steady-state energy saving electromagnetic valve |
| CN102506219A (en) * | 2011-12-08 | 2012-06-20 | 北京控制工程研究所 | Permanent magnetic valve with characteristic of fast response |
| CN102518859A (en) * | 2011-12-08 | 2012-06-27 | 合肥美亚光电技术股份有限公司 | Electromagnetic valve and electromagnetic valve system |
| CN105179791A (en) * | 2015-08-25 | 2015-12-23 | 北京控制工程研究所 | Monostable axial-flow type solenoid valve based on uncoupled permanent magnet bias |
| CN106763991A (en) * | 2016-11-22 | 2017-05-31 | 上海空间推进研究所 | A kind of minisize electromagnetic proportional directional valve |
| CN108413106A (en) * | 2018-03-16 | 2018-08-17 | 北京控制工程研究所 | A kind of proportion magnetic valve that tiny flow quantity accurately controls |
| CN212360971U (en) * | 2020-05-27 | 2021-01-15 | 星豹(北京)氢能源科技股份有限公司 | Long-life high-pressure self-locking axial flow electromagnetic valve for hydrogen fuel cell |
-
2021
- 2021-03-30 CN CN202110342285.7A patent/CN113090804B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2258940Y (en) * | 1996-05-20 | 1997-08-06 | 任明琪 | Low energy consumption magnetic holding open-close valve |
| CN2601336Y (en) * | 2002-12-27 | 2004-01-28 | 上海杰灵磁性器材有限公司 | Double steady-state energy saving electromagnetic valve |
| CN102506219A (en) * | 2011-12-08 | 2012-06-20 | 北京控制工程研究所 | Permanent magnetic valve with characteristic of fast response |
| CN102518859A (en) * | 2011-12-08 | 2012-06-27 | 合肥美亚光电技术股份有限公司 | Electromagnetic valve and electromagnetic valve system |
| CN105179791A (en) * | 2015-08-25 | 2015-12-23 | 北京控制工程研究所 | Monostable axial-flow type solenoid valve based on uncoupled permanent magnet bias |
| CN106763991A (en) * | 2016-11-22 | 2017-05-31 | 上海空间推进研究所 | A kind of minisize electromagnetic proportional directional valve |
| CN108413106A (en) * | 2018-03-16 | 2018-08-17 | 北京控制工程研究所 | A kind of proportion magnetic valve that tiny flow quantity accurately controls |
| CN212360971U (en) * | 2020-05-27 | 2021-01-15 | 星豹(北京)氢能源科技股份有限公司 | Long-life high-pressure self-locking axial flow electromagnetic valve for hydrogen fuel cell |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669462A (en) * | 2021-08-19 | 2021-11-19 | 浙江大学 | Low-power-consumption bistable electromagnetic valve |
| CN113669461A (en) * | 2021-08-19 | 2021-11-19 | 浙江大学 | Bistable electromagnetic valve |
| CN113669461B (en) * | 2021-08-19 | 2022-04-05 | 浙江大学 | Bistable electromagnetic valve |
| WO2023019492A1 (en) * | 2021-08-19 | 2023-02-23 | 浙江大学 | Bistable solenoid valve |
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|---|---|
| CN113090804B (en) | 2022-10-18 |
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