CN107387844B - It is a kind of without friction proportioning valve magnetic structure - Google Patents
It is a kind of without friction proportioning valve magnetic structure Download PDFInfo
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- CN107387844B CN107387844B CN201710700711.3A CN201710700711A CN107387844B CN 107387844 B CN107387844 B CN 107387844B CN 201710700711 A CN201710700711 A CN 201710700711A CN 107387844 B CN107387844 B CN 107387844B
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a kind of without friction proportioning valve magnetic structure, the micro-scale solenoid valve is small using magnetic material B-H (magnetic density-magnetic induction intensity) curve slope at low magnetic flux metric density area, that is the electromagnetic force feature lower with increase in current rate proposes a kind of New Type Proportional valve magnetic circuit based on big leakage field technology.Different and traditional proportion magnetic valve magnetic structures, utilize big leakage field magnetic circuit, the reliability that the valve not only fully achieves the frictionless motion of valve, improves proportional precision, increases valve, proportioning valve is also reduced to the accordance with tolerance of shoe-like part machining accuracy, so that proportioning valve has better batch consistency.The structure can be used for the proportional flow control of microfluid, also can provide scaling-based shift output.
Description
Technical field
The present invention relates to a kind of proportioning valve magnetic structures.
Background technique
In micrometeor ratio control field, proportion magnetic valve magnetic circuit activates actuator as a kind of ratio, has operation side
Just, the advantages that simple is controlled, is a kind of driving method of extensive application.The essence of proportioning valve be make electromagnetic force to displacement not
Sensitivity, and only relationship proportional to driving voltage or electric current, so that itself and the spring dynamic balance acted on spool.But it passes
The ratio electromagnetic circuit of system is all to reduce electromagnetic force using the method for bypass leakage field to increase speed with current or voltage is increased,
Achieving the purpose that can be with spring dynamic balance to which ratio controls, and this structure bypasses the armature valve core of movement and magnetic circuit
Gap is smaller, and disadvantage specifically includes that the performance of solenoid valve is more demanding to pole shoe shape.It has higher requirements to machining accuracy,
It is not easy being consistent property in production, is not easy to assemble；Since spool is needed during the motion through wall surface leakage field, spool with
The spacing of wall surface is smaller, although certain structures have been suspended spool by plate-like spring, but still has the risk of friction, is easy by environment
It influences to generate friction, to influence product proportion performance；It is equally since leakage field magnetic circuit is smaller, magnetic circuit is influenced vulnerable to deformation, such as
Once then entire ratio magnetic circuit performance can generate larger change since temperature or operation cause Light deformation.
Application No. is the patents of CN201420652237.3 to disclose the solenoid-operated proportional of the PC-EPC for excavator system
Valve structure-improved solves electromagnetic proportional valve and exports abnormal, regular clamping stagnation, causes hydraulic pump power bigger than normal or less than normal,
So that excavator occur it is regular the problem of suppressing vehicle and slow motion.It is arranged by the middle position to the solenoid-operated proportional valve core
Compensating groove；The bottom setting guide part of spool improves electromagnetic proportional valve the operation is stable, and sensitivity greatly increases, and solves original
The problem of easy clamping stagnation, so that regular being addressed the problem of suppressing vehicle and slow motion occurs in excavator.But the electricity of the structure
Magnet valve still falls within the proportion magnetic valve magnetic circuit of friction, although improving catching phenomenon, without fundamentally solving friction
The problem of, but encounter temperature, there are still clamping stagnation risks for the influence of external force.
Application No. is the Chinese patents of CN201610044647.3 to disclose a kind of ratio electromagnetic gas valve, and the screw thread of the valve connects
One end of fitting is fixedly connected with valve pocket；Valve nozzle is connected to one end of valve pocket；Threaded connector, valve nozzle are respectively positioned on the same of valve pocket
End；The axially extending bore that valve nozzle is equipped with radial through-hole and is connected to valve pocket, radial through-hole are connected to axially extending bore；Armature sliding is matched
It closes in valve pocket；One end of armature can offset with the inner end of axially extending bore to be sealed, and the other end and electromagnetism of armature are kept off
Elasticity reset device is equipped between iron；Electromagnetism buting iron is connected to the other end of valve pocket；Shell is socketed in valve pocket outer and shell and valve
Set is fixedly connected；Electromagnetic coil is located between valve pocket and shell.As described in patent, the solenoid valve armature of the structure passes through sliding
Cooperation, is that one kind has friction electromagnetic valve structure；In addition, magnetic circuit part has triangle, the consistency of processing influences magnetic property
It is larger, it is higher to processing request.
On 3 phases in 2013 " hydraulic and pneumatic ", article " specificity analysis of proportion magnetic valve and experimental study " (make by supplement
Person) a kind of proportioning valve adjusted for variable thrust liquid rocket engine flow is described, comparative example electromagnet static state suction is special
Property, solenoid valve valve port flow characteristic and proportion electro-magnet dynamic response characteristic are studied.The shortcoming of the proportioning valve is still
It is so that magnetic force adjustment is carried out using bypass, armature front has chamfering for pole shoe structure；Easy processing is not allowed, and chamfer machining is consistent
Property has larger impact to product batches consistency；Armature is still easy to be influenced to generate friction with valve body by the external world, to reduce ratio
Valve performance.
Summary of the invention
Technology of the invention solves the problems, such as: in order to overcome the deficiencies of the prior art, proposing a kind of based on big leakage field technology
Without friction proportioning valve magnetic structure, structure is simple, compact, scalability is strong, is suitable for low-power consumption, high-precision, without friction, Gao Ke
It leans on, micrometeor fluid control systems, also can be used as minor proportions actuator and scaling-based shift output is provided.
The technical solution of the invention is as follows: a kind of without friction proportioning valve magnetic structure, including valve component, outer magnetic conduction
Body, coil, lead, valve seat, armature component；The valve component includes valve inlet tip side, magnetism-isolating loop, outlet end；Entrance
Tip side, outlet end are rotary structure, and magnetism-isolating loop is mounted on inlet attack end end and is mounted in the port of outlet end；Institute
The armature component stated includes non-metallic seal, baffle, spring, armature；Non-metallic seal is mounted on baffle one end, armature peace
Mounted in the baffle other end；Spring pocket is compressed on baffle by armature；The outer magnetizer covers on inlet attack end, one end with
Inlet attack end outer wall face contact, the other end are contacted with outlet end end；The coil is in outer magnetizer and inlet attack end
Between, it is located at magnetism-isolating loop side；The lead is separately connected with coil both ends, is exported and is drawn from outer magnetizer lower end；Armature group
Part is mounted in the inner cavity of outlet end by spring, and valve seat compresses armature component；The valve seat outlet end is fixedly connected.
It further include gasket, the gasket is mounted between spring and outlet end, and spring, gasket are pressed in out by the port of valve seat
On step structure in mouth end inner cavity.
The outer magnetizer, inlet attack end, outlet end, baffle, armature are magnetic conductive metal material；Magnetism-isolating loop is non-magnetic
Metal material.
Spring, which is in, in the state that the coil is not powered, in armature component pre-tightens compressive state.
There are air gap a between inlet attack end end and armature, and air gap a is in the armature axial direction direction of motion；The rank
There are air gap b between iron and outlet end, and air gap b is in armature radial direction.
The inlet attack end is provided with through-hole along axis, is connected to the inner cavity of outlet end.
The sum of described air gap a and air gap b is greater than 5 times of armature impulse stroke.
Compared with the prior art, the invention has the advantages that:
(1) present invention passes through balanced armature direction of motion air gap and bypass air gap two using big leakage field design concept is based on
A size, (magnetic density-magnetic induction intensity) curve slope at low magnetic flux metric density area is small, i.e., electromagnetic force is with driving current
Or the feature that driving voltage rate of rise is lower, devise a kind of novel magnetic circuit.In entire working range, the magnetic flux of magnetic circuit is close
It spends maximum value and is less than 0.4T, be in low magnetic flux metric density working condition.Have ratio special under the conditions of big leakage field using solenoid valve
Property, simultaneously because armature component and valve body have larger gap, realize in the course of work without friction, greatly improving can
By property, the service life, solenoid-operated proportional performance stability.
(2) the armature baffle plate assembly that electromagnetic proportional valve magnetic Circuit Design of the invention reed and armature collectively constitute, will hold in the mouth
Iron baffle plate assembly suspends completely, and not with valve body friction when switch motion, performance stablizes, and consistency is good；Automatic pollution is avoided, is switched
High reliablity.The solenoid valve that the present invention designs still ensures that sealing performance after No. 1,000,000 switches.
(3) in the present invention, it is the ratio electromagnetic structure under the conditions of big leakage field due to the essence of this magnetic circuit, influences proportionality
The crucial selection in two void dimensions.So being different from traditional proportion magnetic valve structure, it is no longer necessary to be tied by boots portion
Structure or chamfering structure reduce electromagnetic force with driving current or the growth rate of driving voltage, so that design of part is simple
Easy to process, complete machine is convenient for assembling and setting, and is also easier to guarantee batch consistency for production control.
(4) present invention is due to the magnetic structure using big leakage field, and the rigidity of springs is that same size passes in armature component
3-5 times of system proportioning valve, therefore armature component has higher displacement resolution and stability.Wherein, displacement resolution can reach 1
μm。
(5) the configuration of the present invention is simple, compact, scalability is strong；By Improvement, can be fitted using appropriate magnetic structure
Application is exported for different operating pressure, different opening desired ratio valve or scaling-based shift.
Detailed description of the invention
Fig. 1 is a kind of without friction proportioning valve magnetic structure schematic diagram；
Fig. 2 is valve component structural schematic diagram of the present invention；
Fig. 3 is armature component structural schematic diagram of the present invention；
Fig. 4 is magnetic circuit path structural schematic diagram of the present invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing.
As shown in Figure 1, be the present invention without friction proportioning valve magnetic structure schematic diagram, it is a kind of without friction proportioning valve magnetic circuit knot
Structure, including valve component 1, outer magnetizer 2, coil 3, lead 4, gasket 5, valve seat 6, armature component 7.
As shown in Fig. 2, the valve component 1 includes inlet attack end 11, magnetism-isolating loop 12, outlet end 13；Inlet attack
End 11, outlet end 13 are rotary structure, and magnetism-isolating loop 12 is mounted on 11 end of inlet attack end and is mounted on 13 end of outlet end
In mouthful, they are linked together by welding manner；Inlet attack end 11 is provided with through-hole along axis, connects with the inner cavity of outlet end 13
It is logical.Valve component 1 is the skeleton of entire solenoid valve, is one of magnetic circuit path of solenoid valve.
As shown in figure 3, the armature component 7 includes non-metallic seal 71, baffle 72, spring 73, armature 74.Non- gold
Belonging to sealing element 71 can be connected at one end by way of sulfuration process, heat pressing process or screw thread or mechanical compaction with baffle, armature
74 are mounted on 72 other end of baffle；73 sets of spring on baffle 72, are compressed by armature 74, and armature 74 and baffle 72 are connected by fixed
It is connected together.To be suspended in armature component 7 in solenoid valve, using radial rigidity, spring 73 big and good to neutrality makes component
Suspension is got up, and spring 73 is springs.This suspension support mode make armature component 7 not with wall friction in solenoid valve, because
And there is performance to stablize, switch reliability and the strong advantage of high sealing reliability, contamination resistance.
Outer magnetizer 2 is one of magnetic circuit channel in the periphery of valve component 1.2 sets of outer magnetizer at inlet attack end 11
On, one end and 11 outer wall face contact of inlet attack end, the other end are contacted with 13 end of outlet end, outer magnetizer 2 and ingress interface
End 11 is connected by screw to；Coil 3 is between outer magnetizer 2 and inlet attack end 11, is located at 12 side of magnetism-isolating loop, coil 3
It is to be formed around valve component coiling；Lead 4 is separately connected with 3 both ends of coil, is exported and is drawn from 2 lower end of outer magnetizer；Armature
Component 7 is mounted in the inner cavity of outlet end 13 by spring 73, and valve seat 6 compresses armature component 7；6 outlet end 13 of valve seat
It is fixedly connected.Gasket 5 is mounted between spring 73 and outlet end 13, and spring 73, gasket 5 are pressed in outlet end by the port of valve seat 6
On step structure in 13 inner cavities.
Spring 73, which is in, in the state that coil 3 is not powered, in armature component 7 pre-tightens compressive state.
Valve component 1, outer magnetizer 2, coil 3, lead 4, gasket 5, valve seat 6, baffle 72, spring 73,74 material of armature
For metal；Non-metallic seal 71 is nonmetallic；Wherein, outer magnetizer 2, valve component-inlet attack end 11, valve component-
Outlet end 13, baffle 72, armature 74 are magnetic conductive metal material；Valve component-magnetism-isolating loop 12 is non-magnetic metal material.
There are air gap a 8, air gap a 8 to be axially moved direction in armature 7 between 11 end of inlet attack end and armature 74；Institute
It states there are air gap b 9 between armature 74 and outlet end 13, air gap b 9 is radial in armature 7.The sum of air gap a 8 and air gap b 9 are greater than
5 times of 74 impulse stroke of armature.
As shown in figure 4, magnetic circuit 10 of the invention passes through outer magnetizer 2, valve body permeability magnetic material-inlet attack end 11, air gap a
8, armature 74, air gap b 9, valve body permeability magnetic material-, valve component-outlet end 13, outer magnetizer 2 are closed.
As shown in figure 4, the present invention is a kind of New Type Proportional magnetic circuit based on big leakage field design concept.It is transported by balanced armature
Dynamic direction air gap and bypass two sizes of air gap ----air gap a 8 and air gap b 9, so that proportion magnetic valve magnetic flux at work
Density maxima is less than 0.4T, is in low magnetic flux metric density working condition.
Pass through analytical formula:It is found that if making Bδ 2It is relatively slow with increasing speed for displacement, then it can make magnetic
Flux density is insensitive to being displaced.Electromagnetic force only relationship proportional to driving voltage or electric current at this time, so that itself and effect
Spring dynamic balance on spool can be obtained by corresponding displacement by control voltage or electric current.
In formula: F is electromagnet suction；BδFor working gas gap magnetic density；A is the actuation area of armature 74；μ0Indicate empty
Gas magnetic conductivity: μ0=1.257 × 10-6H/m。
When installation, coil 3 is wound on the inlet attack end 11 of valve component 1 first, and by drawing on being welded to connect
Line 4；Then outer magnetizer 2 is mounted on to periphery and the fastening at inlet attack end 11；1 middle outlet end 13 of valve component is equipped with sky
Armature component 7 is then put into the cavity of outlet end 13 by chamber, and the size of air gap a 8 is adjusted by gasket 5, air gap b's 9
Size then passes through design size and processing guarantees；Pay attention to gasket 5 be located at 13 inner cavity of armature component 7 and outlet end step structure it
Between, armature component 7, gasket 5 are pressed in the inner cavity of outlet end 13 finally by valve seat 6.Valve seat 6 compress armature component 7 after with
Outlet end 13 is affixed.Composition is completely without friction proportioning valve magnetic structure in this way.
The course of work without friction proportioning valve magnetic structure is as follows: in the state that coil 4 is not powered, armature component 7 is hit by a bullet
Spring 73 is in compressive state.When solenoid valve lead 4 establishes operating voltage or operating current, since solenoid coil 3 is perception
Element, electric current exponentially increases in coil 3, and the magnetic field strength of solenoid valve magnetic circuit increases, and acts on the magnetic field of armature component 7
Power increases.When magnetic field force can overcome the power of spring 73,74 setting in motion of armature, valve port is opened.Since this is that one kind is based on
The New Type Proportional magnetic circuit of big leakage field design concept, during the work time, magnetic density changes to a very small extent, to electromagnetism
The influence very little of power, therefore magnetic density is insensitive to the variation of armature component position, magnetic density and driving work electricity
Pressure or operating current proportion relation, therefore electromagnetic force caused by increasing due to voltage or electric current can be increased by spring 73
Large deformation balances, and stablizes on the specific position；When proportion magnetic valve reduces voltage or electric current, under coil current
Drop causes 7 magnetic density of armature component to reduce, same reason, and magnetic density is unwise to the variation of armature component position
Sense, magnetic density and driving operating voltage or operating current proportion relation, therefore since voltage or electric current increase draw
Electromagnetic force can by spring 73 reduce deformation balance, and stablize on certain position.When driving voltage or electric current
After being down to 0, the output of ratio driver will also be returned to zero-bit, realize and reset under the action of spring 73.
Different and traditional proportion magnetic valve magnetic structures, the present invention utilize big leakage field magnetic circuit, which not only fully achieves
The frictionless motion of valve, the reliability for improving proportional precision, increasing valve, also reduce proportioning valve to shoe-like part
The accordance with tolerance of machining accuracy, so that proportioning valve has better batch consistency.Described in the present invention is only one of example, base
In this principle, be applicable to by using appropriate magnetic structure different operating pressure, different opening desired ratio valve or
Scaling-based shift exports application.Finally, the structure can be used for the proportional flow control of microfluid, it is defeated also to can provide scaling-based shift
Out.
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.
Claims (6)
1. a kind of without friction proportioning valve magnetic structure, which is characterized in that including valve component (1), outer magnetizer (2), coil
(3), lead (4), valve seat (6), armature component (7)；The valve component (1) includes valve inlet tip side (11), magnetism-isolating loop
(12), outlet end (13)；Inlet attack end (11), outlet end (13) are rotary structure, and magnetism-isolating loop (12) is mounted on entrance
It tip side (11) end and is mounted in outlet end (13) port；The armature component (7) include non-metallic seal (71),
Baffle (72), spring (73), armature (74)；Non-metallic seal (71) is mounted on baffle (72) one end, and armature (74) is mounted on
Baffle (72) other end；Spring (73) covers on baffle (72), is compressed by armature (74)；The outer magnetizer (2) covers in entrance
On tip side (11), one end and inlet attack end (11) outer wall face contact, the other end are contacted with outlet end (13) end；The line
Circle (3) is between outer magnetizer (2) and inlet attack end (11), is located at magnetism-isolating loop (12) side；The lead (4) and coil
(3) both ends are separately connected, and are exported and are drawn from outer magnetizer (2) lower end；Armature component (7) is mounted on outlet end by spring (73)
(13) in inner cavity, valve seat (6) compresses armature component (7)；Valve seat (6) outlet end (13) is fixedly connected；
There are air gap a (8) between inlet attack end (11) end and armature (74), air gap a (8) is axially transported in armature (7)
Dynamic direction；There are air gap b (9) between the armature (74) and outlet end (13), air gap b (9) is radial in armature (7).
2. according to claim 1 a kind of without friction proportioning valve magnetic structure, which is characterized in that further include gasket (5), institute
It states gasket (5) to be mounted between spring (73) and outlet end (13), spring (73), gasket (5) are pressed in out by the port of valve seat (6)
On step structure in mouth end (13) inner cavity.
3. according to claim 1 or 2 a kind of without friction proportioning valve magnetic structure, which is characterized in that the outer magnetizer
(2), inlet attack end (11), outlet end (13), baffle (72), armature (74) are magnetic conductive metal material；Magnetism-isolating loop (12) is not
Magnetic conductive metal material.
4. according to claim 1 or 2 a kind of without friction proportioning valve magnetic structure, which is characterized in that the coil (3) is no
Spring (73), which is in, in the state of power-up, in armature component (7) pre-tightens compressive state.
5. according to claim 1 a kind of without friction proportioning valve magnetic structure, which is characterized in that the inlet attack end
(11) it is provided with through-hole along axis, is connected to the inner cavity of outlet end (13).
6. according to claim 1 a kind of without friction proportioning valve magnetic structure, which is characterized in that the air gap a (8) and gas
The sum of gap b (9) is greater than 5 times of armature (74) impulse stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700711.3A CN107387844B (en) | 2017-08-16 | 2017-08-16 | It is a kind of without friction proportioning valve magnetic structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700711.3A CN107387844B (en) | 2017-08-16 | 2017-08-16 | It is a kind of without friction proportioning valve magnetic structure |
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| CN107387844A CN107387844A (en) | 2017-11-24 |
| CN107387844B true CN107387844B (en) | 2019-01-15 |
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| CN201710700711.3A Active CN107387844B (en) | 2017-08-16 | 2017-08-16 | It is a kind of without friction proportioning valve magnetic structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006313B (en) * | 2017-12-20 | 2023-06-02 | 西安航天计量测试研究所 | Electromagnetic valve action polarity detection system and method based on armature displacement |
| CN108426070B (en) * | 2018-02-28 | 2019-07-12 | 北京控制工程研究所 | A kind of isolated solenoid-operated proportional balanced valve suitable under more pressure working conditions |
| CN108533820B (en) * | 2018-03-16 | 2020-04-10 | 北京控制工程研究所 | Magnetic circuit symmetrical bipolar friction-free self-locking valve |
| CN109340380A (en) * | 2018-10-17 | 2019-02-15 | 北京七星华创流量计有限公司 | Solenoid valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02173485A (en) * | 1988-12-23 | 1990-07-04 | Tokyo Keiki Co Ltd | Proportional solenoid |
| 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 |
| CN104633218A (en) * | 2013-11-07 | 2015-05-20 | 贵州红林机械有限公司 | Switching electromagnetic valve for controlling high-pressure gas |
| CN106641391A (en) * | 2016-12-05 | 2017-05-10 | 北京控制工程研究所 | Quick-response solenoid electromagnetic valve |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2682274T3 (en) * | 2012-07-11 | 2018-09-19 | Flextronics Ap, Llc | Direct Acting Solenoid Actuator |
-
2017
- 2017-08-16 CN CN201710700711.3A patent/CN107387844B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02173485A (en) * | 1988-12-23 | 1990-07-04 | Tokyo Keiki Co Ltd | Proportional solenoid |
| 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 |
| CN104633218A (en) * | 2013-11-07 | 2015-05-20 | 贵州红林机械有限公司 | Switching electromagnetic valve for controlling high-pressure gas |
| 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 |
| CN106641391A (en) * | 2016-12-05 | 2017-05-10 | 北京控制工程研究所 | Quick-response solenoid electromagnetic valve |
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