CN113757388A - Pilot-operated high-pressure self-locking valve - Google Patents
Pilot-operated high-pressure self-locking valve Download PDFInfo
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- CN113757388A CN113757388A CN202111048324.9A CN202111048324A CN113757388A CN 113757388 A CN113757388 A CN 113757388A CN 202111048324 A CN202111048324 A CN 202111048324A CN 113757388 A CN113757388 A CN 113757388A
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- 238000007789 sealing Methods 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 8
- 229920002313 fluoropolymer Polymers 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims 3
- 238000009434 installation Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 5
- 238000004880 explosion Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 230000001681 protective effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/42—Arrangements or adaptations of power supply systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated 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
- F16K31/0644—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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
- F16K31/408—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston the discharge being effected through the piston and being blockable by an electrically-actuated member making contact with the piston
Abstract
The invention discloses a pilot-operated high-pressure self-locking valve, which comprises a main valve and a pilot valve, wherein the pilot valve is arranged on the main valve and is set to be communicated with a main valve core (6) of the main valve at the inlet of the pilot valve, the outlet of the pilot valve is communicated with an outlet channel of the main valve, and the opening and closing of the main valve core (6) are controlled by changing the stress state of the main valve core (6) by changing the pressure at the rear end of the main valve core (6). The pilot-operated high-pressure self-locking valve has high working pressure and high response speed, and can be started repeatedly.
Description
Technical Field
The invention relates to the technical field of self-locking valves, in particular to a pilot-operated high-pressure self-locking valve.
Background
In engine systems for rockets, satellites and weapons, it is common to use an electro-explosive valve as the opening valve for the gas cylinder, because of the high pressure of the gas cylinder. Although the electric explosion valve has the advantages of good sealing performance and high working reliability, the electric explosion valve is a disposable product and cannot meet the requirement of repeated use or repeated start of a system. Meanwhile, the electric explosion valve can generate larger impact force when detonated, and can influence an engine system, particularly an attitude control engine system, so that the flight attitude of the aircraft is influenced.
Therefore, it is desirable to provide a pilot-operated high-pressure self-locking valve to solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide a pilot-operated high-pressure self-locking valve which has high working pressure and high response speed and can be started repeatedly.
In order to achieve the above object, the present invention provides a pilot type high pressure latching valve, which includes a main valve and a pilot valve, the pilot valve being mounted to the main valve and configured such that an inlet of the pilot valve communicates with a main spool of the main valve, an outlet of the pilot valve communicates with an outlet passage of the main valve, and opening and closing of the main spool is controlled by changing a pressure at a rear end of the main spool to change a force state of the main spool.
Preferably, the main valve comprises a housing and a main valve spool assembly arranged in the housing, one end of the housing is provided with an inlet connector, a main valve inlet passage is formed in the inlet connector, and a main valve outlet passage is formed at the other end of the housing;
the main valve spool assembly is located between the main valve inlet passage and the main valve outlet passage and is used for controlling connection and disconnection between the main valve inlet passage and the main valve outlet passage.
Preferably, the main spool assembly includes a valve housing, a main spool, and a spring, wherein,
the valve sleeve is fixedly arranged in the shell, one end of the valve sleeve, which is close to the inlet channel of the main valve, is provided with a flow channel communicated with the inlet channel of the main valve, one end of the valve sleeve, which is close to the outlet channel of the main valve, is internally provided with a main valve core mounting hole, and the side wall of the valve sleeve is provided with a pressure guide channel;
the main valve core is arranged in the main valve core mounting hole, the front end of the main valve core is used for sealing the main valve outlet channel, the rear end of the main valve core is provided with a spring hole for mounting a spring, and the spring is arranged between the main valve core and the valve sleeve.
Preferably, the pilot valve comprises a valve seat, a coil assembly and a pilot valve spool for controlling the opening and closing of the main valve spool assembly, wherein,
one end of the valve seat is fixedly connected with the shell, the other end of the valve seat and the sealing surface of the pilot valve core form a sealing pair, a pilot valve inlet channel and a pilot valve outlet channel respectively penetrate through the valve seat, the pilot valve inlet channel is communicated with a pressure guiding channel of the valve sleeve, and the pilot valve outlet channel is communicated with a main valve outlet channel;
the coil assembly comprises a coil shell, an opening coil, a closing coil, a permanent magnet block and a cover shell, wherein the opening coil and the closing coil are wound on the outer wall of the coil shell and used for generating a magnetic field; wherein the content of the first and second substances,
the starting coil is positioned at the upper end of the pilot valve core, the closing coil is positioned at the lower end of the pilot valve core, and the pilot valve core moves upwards and a pilot valve channel is opened when a short pulse voltage signal is given to the starting coil; when a short pulse voltage signal is applied to the close coil, the pilot valve core moves downward and the pilot valve channel closes.
Preferably, the sealing structures of the main valve core and the pilot valve core are both fluoroplastic-metal combined mushroom-shaped sealing structures.
Preferably, an O-ring for realizing connection static sealing of each part is arranged between the inlet nozzle and the shell, between the valve seat and the shell, and between the pilot valve and the main valve.
Preferably, a plurality of flow blocking rings made of fluoroplastics are arranged on the main valve core, and the outer diameter size of each flow blocking ring is in transition fit with the size of the inner hole of the valve sleeve.
Preferably, a filter assembly for preventing the entry of excess material into the interior of the valve body is provided within the main valve inlet passage.
Preferably, the pilot valve core is provided with a lightening hole for lightening the weight of the pilot valve core and a threaded hole for mounting and dismounting the pilot valve core.
Preferably, a magnetism isolating gasket is welded and fixed on the end face of the pilot valve core with the lightening hole.
According to the technical scheme, the invention adopts a structure form of a built-in pilot, the valve sleeve and the shell are internally provided with a flow channel communicated with the inlet and the outlet of the pilot valve, the inlet flow channel of the pilot valve is arranged at the rear end of the main valve core, and the outlet flow channel converges to the main path outlet. The pilot valve is used for changing the pressure at the rear end of the main valve core, so that the stress state of the main valve core is changed, and the opening and closing of the main valve core are controlled. Because the built-in pilot structure is adopted, the scheme does not need to be matched with a control air source independently, meanwhile, the outlet of the pilot valve is communicated with the outlet of the main valve, the pilot valve does not need an independent exhaust hole, the structure of the valve is simplified, and further the impact on the system when the air is exhausted externally is avoided.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a pilot-operated high-pressure latching valve provided by the present invention;
fig. 2 is a schematic structural diagram of a coil assembly in the pilot-operated high-pressure self-locking valve provided by the invention.
Description of the reference numerals
1-inlet nozzle 2-filter assembly
3-valve pocket 4-spring
5-flow blocking ring 6-main valve core
7-shell 8-O-ring
9-valve seat 10-coil assembly
1001-close coil 1002-permanent magnet
1003-opening coil 1004-coil housing
1005-housing 11-lightening hole
12-main valve inlet channel 13-main valve outlet channel
14-flow passage 15-main valve core mounting hole
16-pressure guide channel 17-pilot valve core
18-Pilot inlet passage 19-Pilot outlet passage
20-magnetic isolation gasket 21-threaded hole
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the directional words "upper, lower, inner, outer" and the like included in the terms merely represent the orientation of the terms in a conventional use state or are colloquially understood by those skilled in the art, and should not be construed as limiting the terms.
Referring to fig. 1, the present invention provides a pilot type high pressure latching valve, which includes a main valve and a pilot valve, the pilot valve is mounted to the main valve and is configured such that an inlet of the pilot valve communicates with a main spool 6 of the main valve, an outlet of the pilot valve communicates with an outlet passage of the main valve, and opening and closing of the main spool 6 is controlled by changing a pressure at a rear end of the main spool 6 to change a stress state of the main spool 6.
The main valve comprises a shell 7 and a main valve core assembly arranged in the shell 7, wherein one end of the shell 7 is provided with an inlet connector 1, a main valve inlet channel 12 is formed in the inlet connector 1, the other end of the shell 7 is provided with a main valve outlet channel 13, and the main valve inlet channel 12 and the main valve outlet channel 13 are on the same axis;
a main spool assembly is located between the main valve inlet passage 12 and the main valve outlet passage 13 for controlling the make and break of the main valve inlet passage 12 and the main valve outlet passage 13.
The main spool assembly includes a valve housing 3, a main spool 6, and a spring 4, wherein,
the valve sleeve 3 is fixedly arranged in the shell 7, one end of the valve sleeve 3 close to the main valve inlet channel 12 is provided with a flow channel 14 communicated with the main valve inlet channel 12, one end of the valve sleeve 3 close to the main valve outlet channel 13 is internally provided with a main valve core mounting hole 15, and the side wall of the valve sleeve 3 is provided with a pressure guide channel 16;
The pilot valve comprises a valve seat 9, a coil assembly 10 and a pilot valve spool 17 for controlling the opening and closing of the main spool assembly, wherein,
one end of the valve seat 9 is fixedly connected with the shell 7, the other end of the valve seat forms a sealing pair with a sealing surface of the pilot valve core 17, a pilot valve inlet channel 18 and a pilot valve outlet channel 19 respectively penetrate through the valve seat 9, the pilot valve inlet channel 18 is communicated with a pressure guiding channel 16 of the valve sleeve 3, and the pilot valve outlet channel 19 is communicated with a main valve outlet channel 13;
as shown in fig. 2, the coil assembly 10 includes a coil housing 1004, an opening coil 1003 and a closing coil 1001 wound around an outer wall of the coil housing 1004 for generating a magnetic field, a permanent magnet 1002 for generating a self-locking force, and a cover 1005 disposed outside the coil housing 1004 for forming a magnetic field loop; wherein the content of the first and second substances,
the opening coil 1003 is positioned at the upper end of the pilot valve core 17, the closing coil 1001 is positioned at the lower end of the pilot valve core 17, and the pilot valve core 17 moves upwards when a short pulse voltage signal is given to the opening coil 1003, the pilot valve core 17 is opened and realizes opening position self-locking, and a pilot valve channel is opened; when a short pulse voltage signal is given to the close coil 1001, the pilot valve spool 17 moves downward, the pilot valve spool 17 closes and self-locking is achieved at the off position, and the pilot valve channel is closed.
The sealing structures of the main valve element 6 and the pilot valve element 17 are both fluoroplastic-metal combined mushroom-shaped sealing structures, and fluoroplastic is fixed on the valve element through a hot pressing technology, so that the sealing reliability in high pressure is improved.
O-shaped rings 8 for realizing connection and static sealing of all parts are arranged between the inlet nozzle 1 and the shell 7, between the valve seat 9 and the shell 3 and between the pilot valve and the main valve.
The main valve core 6 is provided with a plurality of flow blocking rings 5 made of fluoroplastic, preferably four flow blocking rings, and the outer diameter size of the flow blocking rings 5 is in transition fit with the inner hole size of the valve sleeve 3.
The filter assembly 2 for preventing the redundant materials from entering the interior of the valve body is arranged in the main valve inlet channel 12, so that the working reliability of the product can be improved, and filters with different precisions can be selected according to the requirements of media.
The pilot valve core 17 is provided with a lightening hole 11 for lightening the weight of the pilot valve core 17 and a threaded hole 21 for mounting and dismounting the pilot valve core 17, so that damage to a matching part and a sealing surface can be avoided when the pilot valve core 17 is replaced.
And a magnetic isolation gasket 20 is welded and fixed on the end face of the pilot valve core 17 with the lightening hole 11.
The pilot-operated high-pressure self-locking valve is used for controlling the on-off of gas in a high-pressure gas cylinder, before the gas cylinder at the front end of the self-locking valve is pressurized, the pilot valve core 17 is in a closed state under the self-locking force of the permanent magnet 1002, the main valve core 6 is in the closed state under the action of the force of the spring 4, the pressure of an inlet of the self-locking valve rises along with the starting pressurization of the gas cylinder at the front end, and the main valve core 6 and the pilot valve core 17 are easily sealed by medium pressure.
When the self-locking pilot valve works, a short pulse voltage signal is supplied to the opening coil 1003, a magnetic field is generated around the short pulse voltage signal, soft magnetic materials forming the coil assembly 10 and the pilot valve core 17 are magnetized, the pilot valve core 17 is opened under the action of a comprehensive magnetic field generated by the opening coil 1003 and the permanent magnet 1002, and the pilot valve core 17 can still keep an opening state under the action of the permanent magnet 1002 when the coil loses the voltage signal, so that the self-locking function of opening is realized. At this time, the gas medium in the pilot valve is discharged from the outlet, which causes the medium pressure at the rear end of main valve element 6 to be released, and the gas medium pressure at the front end of main valve element 6 overcomes the biasing force of spring 4, causing main valve element 6 to move to the left side, forming a medium passage. When the medium circulation needs to be cut off, a short pulse voltage signal is provided for a closing coil 1001 of the pilot valve, the pilot valve core 17 is closed under the action of a comprehensive magnetic field generated by the closing coil 1001 and a permanent magnet 1002, self-locking of a closing state is achieved, the pressure at the rear end of the main valve core 6 is increased to be the same as the pressure at the front end of the main valve core 6, the main valve core 6 is reset under the action of a spring 4, and a medium flow channel is closed.
Therefore, according to the technical scheme, a structure form of a built-in pilot is adopted, a flow channel communicated with an inlet and an outlet of the pilot valve is arranged in the valve sleeve 3 and the shell 7, the pilot valve inlet channel 18 is arranged at the rear end of the main valve core 6, and the outlet flow channel is converged to a main path outlet. The pilot valve is used for changing the pressure at the rear end of the main valve element 6, further changing the stress state of the main valve element 6 and controlling the opening and closing of the main valve element 6. Because the built-in pilot structure is adopted, the scheme does not need to be matched with a control air source independently, meanwhile, the outlet of the pilot valve is communicated with the outlet of the main valve, the pilot valve does not need an independent exhaust hole, the structure of the valve is simplified, and further the impact on the system when the air is exhausted externally is avoided.
Meanwhile, the control form of combining the double coils with the permanent magnet is adopted, the bistable passive self-holding function can be realized, power supply is not needed in long-term work, and compared with an electromagnetic valve, the energy consumption of the system can be greatly reduced. The pilot valve adopts the two logical structures of formula of bearing, can furthest reduced product structure size and weight.
And, be provided with the retaining ring on main valve core 6 for improve main valve core 6 and valve barrel 3 complex alignment nature, under the big condition of main valve core 6 travel stroke, can effectually eliminate main valve core 6 jamming, card and die etc. trouble, the retaining ring also plays the damped effect simultaneously, has good effect to eliminating the tremble phenomenon when main valve core 6 moves.
In addition, 3D printing additive forming technology is adopted in the processing of the shell 7 of the main valve, a flow channel can be directly formed, the processing of complex holes and the filling welding of process holes are not needed, the processing difficulty is reduced, and meanwhile the strength of the shell 7 can be increased.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A pilot type high pressure self-locking valve is characterized in that the pilot type high pressure self-locking valve comprises a main valve and a pilot valve, the pilot valve is installed on the main valve and is arranged that an inlet of the pilot valve is communicated with a main valve core (6) of the main valve, an outlet of the pilot valve is communicated with an outlet channel of the main valve, and the opening and the closing of the main valve core (6) are controlled by changing the pressure at the rear end of the main valve core (6) to change the stress state of the main valve core (6).
2. Piloted high pressure latching valve as in claim 1, characterized in that said main valve comprises a housing (7) and a main spool assembly arranged inside said housing (7), said housing (7) being provided at one end with an inlet nipple (1) and said inlet nipple (1) having a main valve inlet passage (12) formed therein, said housing (7) being formed at the other end with a main valve outlet passage (13);
the main valve core assembly is located between the main valve inlet channel (12) and the main valve outlet channel (13) and used for controlling the connection and disconnection between the main valve inlet channel (12) and the main valve outlet channel (13).
3. Piloted high pressure latching valve as in claim 2, characterized in that said main spool assembly comprises a valve housing (3), a main spool (6) and a spring (4), wherein,
the valve sleeve (3) is fixedly arranged in the shell (7), one end, close to the main valve inlet channel (12), of the valve sleeve (3) is provided with a flow channel (14) communicated with the main valve inlet channel (12), one end, close to the main valve outlet channel (13), of the valve sleeve (3) is internally provided with a main valve core mounting hole (15), and the side wall of the valve sleeve (3) is provided with a pressure guide channel (16);
the main valve core (6) is installed in the main valve core installation hole (15), the front end of the main valve core (6) is used for sealing the main valve outlet channel (13), the rear end of the main valve core (6) is provided with a spring hole used for installing the spring (4), and the spring (4) is installed between the main valve core (6) and the valve sleeve (3).
4. Piloted high pressure latching valve as in claim 3, characterized in that the pilot valve comprises a valve seat (9), a coil assembly (10) and a pilot valve spool (17) for controlling the opening and closing of the main spool assembly, wherein,
one end of the valve seat (9) is fixedly connected with the shell (7), the other end of the valve seat forms a sealing pair with a sealing surface of the pilot valve core (17), a pilot valve inlet channel (18) and a pilot valve outlet channel (19) respectively penetrate through the valve seat (9), the pilot valve inlet channel (18) is communicated with a pressure guide channel (16) of the valve sleeve (3), and the pilot valve outlet channel (19) is communicated with a main valve outlet channel (13);
the coil assembly (10) comprises a coil shell (1004), an opening coil (1003) and a closing coil (1001) which are wound on the outer wall of the coil shell (1004) and used for generating a magnetic field, a permanent magnet (1002) used for generating self-locking force and a cover shell (1005) which is sleeved outside the coil shell (1004) and used for forming a magnetic field loop; wherein the content of the first and second substances,
the opening coil (1003) is positioned at the upper end of the pilot valve core (17), the closing coil (1001) is positioned at the lower end of the pilot valve core (17), and the pilot valve core (17) moves upwards and a pilot valve channel is opened when a short pulse voltage signal is given to the opening coil (1003); when a short pulse voltage signal is applied to the closing coil (1001), the pilot valve spool (17) moves downward and the pilot valve passage is closed.
5. The pilot-operated high-pressure self-locking valve according to claim 4, wherein the sealing structures of the main spool (6) and the pilot spool (17) are both fluoroplastic-metal combined mushroom-shaped sealing structures.
6. Piloted high pressure latching valve as in claim 4, characterized by the fact that between the inlet nipple (1) and the housing (7), between the valve seat (9) and the housing (3), between the pilot valve and the main valve, there are provided O-rings (8) for the static sealing of the connection of the parts.
7. The pilot-operated high-pressure self-locking valve according to claim 3, wherein a plurality of flow blocking rings (5) made of fluoroplastic are arranged on the main valve core (6), and the outer diameter of each flow blocking ring (5) is in transition fit with the inner hole of the valve sleeve (3).
8. Piloted high pressure latching valve according to claim 2, characterized in that a filter assembly (2) for preventing the entry of excess into the interior of the valve body is provided in said main valve inlet passage (12).
9. The pilot type high pressure self-locking valve according to claim 4, wherein the pilot poppet (17) is provided with a lightening hole (11) for lightening the weight of the pilot poppet (17) and a screw hole (21) for mounting and dismounting the pilot poppet (17).
10. The pilot-operated high-pressure self-locking valve according to claim 9, wherein a magnetic spacer (20) is welded and fixed to an end surface of the pilot valve spool (17) having the lightening hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111048324.9A CN113757388A (en) | 2021-09-08 | 2021-09-08 | Pilot-operated high-pressure self-locking valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111048324.9A CN113757388A (en) | 2021-09-08 | 2021-09-08 | Pilot-operated high-pressure self-locking valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113757388A true CN113757388A (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111048324.9A Pending CN113757388A (en) | 2021-09-08 | 2021-09-08 | Pilot-operated high-pressure self-locking valve |
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| CN (1) | CN113757388A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2166424A1 (en) * | 2008-09-19 | 2010-03-24 | Isomatic A/S | Fluid regulator |
| KR20140036591A (en) * | 2012-09-17 | 2014-03-26 | 주식회사 케이 디 텍 | Pilot type solenoid valve |
| CN105570470A (en) * | 2015-12-20 | 2016-05-11 | 西安航天动力研究所 | Built-in pilot operated solenoid valve |
| CN109538773A (en) * | 2018-12-13 | 2019-03-29 | 西安航天动力研究所 | A kind of high pressure pilot-operated type latching valve |
| CN110486479A (en) * | 2019-08-28 | 2019-11-22 | 西安航天动力研究所 | A kind of big flow three-level guide electromagnetic valve |
| CN112236610A (en) * | 2018-04-11 | 2021-01-15 | 沃克工业技术有限公司 | Solenoid valve and air flow divider |
| CN112855960A (en) * | 2021-03-12 | 2021-05-28 | 安徽华东光电技术研究所有限公司 | Double-valve-core electromagnetic valve |
| CN113236792A (en) * | 2021-06-23 | 2021-08-10 | 天津航宇卓然科技有限公司 | Deep low temperature guide formula solenoid valve |
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2021
- 2021-09-08 CN CN202111048324.9A patent/CN113757388A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2166424A1 (en) * | 2008-09-19 | 2010-03-24 | Isomatic A/S | Fluid regulator |
| KR20140036591A (en) * | 2012-09-17 | 2014-03-26 | 주식회사 케이 디 텍 | Pilot type solenoid valve |
| CN105570470A (en) * | 2015-12-20 | 2016-05-11 | 西安航天动力研究所 | Built-in pilot operated solenoid valve |
| CN112236610A (en) * | 2018-04-11 | 2021-01-15 | 沃克工业技术有限公司 | Solenoid valve and air flow divider |
| CN109538773A (en) * | 2018-12-13 | 2019-03-29 | 西安航天动力研究所 | A kind of high pressure pilot-operated type latching valve |
| CN110486479A (en) * | 2019-08-28 | 2019-11-22 | 西安航天动力研究所 | A kind of big flow three-level guide electromagnetic valve |
| CN112855960A (en) * | 2021-03-12 | 2021-05-28 | 安徽华东光电技术研究所有限公司 | Double-valve-core electromagnetic valve |
| CN113236792A (en) * | 2021-06-23 | 2021-08-10 | 天津航宇卓然科技有限公司 | Deep low temperature guide formula solenoid valve |
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