CN117006285A - Miniature high-sensitivity multifunctional pressure control valve - Google Patents

Miniature high-sensitivity multifunctional pressure control valve Download PDF

Info

Publication number
CN117006285A
CN117006285A CN202311066397.XA CN202311066397A CN117006285A CN 117006285 A CN117006285 A CN 117006285A CN 202311066397 A CN202311066397 A CN 202311066397A CN 117006285 A CN117006285 A CN 117006285A
Authority
CN
China
Prior art keywords
cavity
pressure
valve
safety valve
port
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.)
Pending
Application number
CN202311066397.XA
Other languages
Chinese (zh)
Inventor
苏尔敦
王超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Hanggong Technology Co ltd
Original Assignee
Suzhou Hanggong Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Hanggong Technology Co ltd filed Critical Suzhou Hanggong Technology Co ltd
Priority to CN202311066397.XA priority Critical patent/CN117006285A/en
Publication of CN117006285A publication Critical patent/CN117006285A/en
Pending legal-status Critical Current

Links

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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0066—Hydraulic or pneumatic means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

The application discloses a miniature high-sensitivity multifunctional pressure control valve, which relates to the technical field of aerospace control and comprises a shell, an air inlet valve base, an auxiliary spring, an air inlet valve, a polyimide resin gasket, a locking gasket, a high-sensitivity pressure control film, a compression ring, a threaded sleeve, a main spring, a double-cavity valve core, an adjusting flange, a safety valve end cover, a safety valve spring, a safety valve piston and a high-damping vibration reduction sealing rubber ring. The shell is divided into a high-pressure cavity, a low-pressure cavity and an adjusting cavity, the locking gasket, the high-sensitivity pressure control film, the compression ring, the threaded sleeve, the main spring, the safety valve end cover, the safety valve spring, the safety valve piston and the high-damping vibration attenuation sealing rubber ring are installed in the adjusting cavity by taking the double-cavity valve core as a base, and the auxiliary spring, the air inlet valve and the polyimide resin gasket are installed in the low-pressure cavity by taking the air inlet valve base as a base. The application has three functions of pressure regulation, system pressure relief and safety alarm.

Description

Miniature high-sensitivity multifunctional pressure control valve
Technical Field
The application relates to the technical field of aerospace control, in particular to a miniature high-sensitivity multifunctional pressure control valve suitable for a pressure regulating system of a space station equipment cabin.
Background
The pressure regulating valve and the safety valve are two valve products widely applied to the aerospace field, and are widely used in space station environment-controlled life protection, satellite control propulsion systems and attitude control engines of solid and liquid rockets.
The pressure regulating valve is an important liquid/gas pressure closed-loop regulating device, and can be used for reducing the pressure of upstream high-pressure liquid/gas to the working pressure required by downstream devices, and can still maintain the outlet pressure within a specified deviation range when the upstream pressure changes or the downstream load flow changes, so that the system has certain stability.
The safety valve is an important hydraulic/pneumatic system protection device, and when unstable fluctuation or excessive pressure of the pressure value in the system is detected, the safety valve can be automatically opened to release pressure to the outside environment of the system so as to protect the normal operation of certain important precise parts in the system.
In normal hydraulic/pneumatic systems, pressure regulating valves often exist independently of safety valves, resulting in a relatively large number of internal interfaces, relatively large weights, relatively large volumes, and relatively high failure rates of the system, and therefore, a solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The present application is directed to a miniature high-sensitivity multifunctional pressure control valve that overcomes the above-described problems.
The technical scheme adopted by the application is as follows:
the miniature high-sensitivity multifunctional pressure control valve comprises a control valve shell, wherein the control valve shell is provided with an input interface, an output interface, an adjusting interface, a high-pressure cavity and a low-pressure cavity;
the high-pressure cavity comprises a first port detachably connected with the base of the air inlet valve, a second port communicated with the input interface and a third port provided with a first control component and leading to the low-pressure cavity; the first control component comprises an air inlet valve, a secondary spring elastically extruded between the air inlet valve and an air inlet valve base, and a polyimide resin gasket connected with the air inlet valve and used for cutting off a third port of the high-pressure cavity;
the low pressure chamber includes a first port matching the high pressure chamber, a second port in communication with the output port, and a third port leading to the regulation port;
the second upper control assembly comprises a high-sensitivity pressure control film for sealing a third port of the low-pressure cavity, a compression ring which is pressed down on the edge of the high-sensitivity pressure control film, a threaded sleeve which is pressed down on the compression ring and is in threaded connection with the inner wall of the adjustment interface, and an adjustment flange which is used for limiting the top end position of the threaded sleeve and is in threaded connection with the outer wall of the control valve shell;
the safety valve comprises a threaded sleeve, a first control assembly, a second control assembly, a safety valve piston, a safety valve spring, a safety valve end cover, a high-damping vibration attenuation sealing rubber ring, a locking gasket and a high-sensitivity pressure control film, wherein the threaded sleeve is internally provided with the first control assembly;
the double-cavity valve core is provided with a gas leakage channel, the lower end of the gas leakage channel is communicated with the low-pressure cavity, the safety valve piston is provided with a gas leakage hole which is communicated with the upper part and the lower part, the safety valve end cover is provided with a gas leakage hole, the gas leakage hole and the gas leakage channel can be cut off through the high-damping vibration reduction sealing rubber ring, when the gas leakage hole and the gas leakage channel are communicated, the gas leakage channel, the gas leakage hole and the gas leakage hole are communicated with the low-pressure cavity and the outside to realize pressure relief, and high-frequency sound can be generated during pressure relief.
In a preferred embodiment of the application, the control valve housing is screwed with a locking nut, by means of which the adjusting flange can be completely fixed relative to the control valve housing.
In a preferred embodiment of the present application, a filter screen is disposed at both the second port of the low pressure chamber and the second port of the high pressure chamber.
In one aspect of the applicationIn a preferred embodiment, the filter screen has a mounting interface size M4, and the high pressure chamber has a first port diameter ofThe second port diameter is->
In a preferred embodiment of the present application, the high-sensitivity pressure control film is circular and has a diameterThe thickness is 0.5mm; the external thread specification of the threaded sleeve is M18×0.5, and the diameter of the inner cylindrical mating surface isThe height is 12mm; the rigidity of the main spring is 2.50N/mm, the free height is 11.5mm, and the pre-pressing amount is 1mm; the external thread specification of the safety valve end cover is M8×0.5, and the internal diameter is +.>The height is 2.0mm; the safety valve piston and the high damping vibration attenuation sealing rubber ring are combined together in a vulcanization mode, and the outer diameter of the safety valve piston isThe inner diameter is +.>The rigidity of the safety valve spring is 0.6N/mm, the free height is 10.0mm, and the pre-pressing amount is 1.5mm; the outer diameter of the double-cavity valve core is +.>The diameter of the probe rod at the lower end head is +.>The diameter of the inner cavity isThe diameter of the outer circle of the outer cavity is->The height is 18.0mm.
In a preferred embodiment of the present application, the inlet valve has an inner diameter ofThe height of the polyimide resin gasket is 8.0mm, and the polyimide resin gasket passes through the diameter +.>Is tightly matched with the assembly hole of the assembly rod; the stiffness of the auxiliary spring is 0.3N/mm, the free height is 8.5mm, and the pre-pressing amount is 1mm; the air inlet valve base is connected with the low-pressure cavity through M10 threads, and comprises a valve seat with an inner diameter of +>And a cylindrical section of the secondary spring is built in.
Compared with the prior art, the application has the beneficial effects that:
the application can be applied to a certain equipment cabin of a space station, is used for adjusting the working pressure of a certain system and has the functions of a safety valve and an alarm when the system pressure exceeds the tolerance;
the application is not limited by the structure, space and layout of the space station, the pressure regulating pressure is not changed along with the change of the input pressure, the pressure regulating valve is an ideal constant value, and the pressure regulating valve is also a constant value;
the application is a multifunctional pressure control valve, which integrates three functions of pressure regulation, system pressure relief and safety alarm;
the miniature high-sensitivity valve has the total weight of less than or equal to 50g, is 1/10 of a product with only a pressure regulating function in the market, has the volume equivalent to that of a table tennis ball, is 1/5 of the product with only the pressure regulating function in the market, has the pressure regulating precision of +/-1 kpa, and is 1/10 of the product with only the pressure regulating function in the market.
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an embodiment of the present application.
Fig. 2 is a three-dimensional exploded schematic view of the structure shown in fig. 1.
FIG. 3 is a schematic view of the dual chamber spool shown in FIG. 1.
Fig. 4 is a schematic view of the intake valve shown in fig. 1.
Fig. 5 is a schematic view of the three-dimensional structure of the safety valve end cap shown in fig. 1.
Fig. 6 is a schematic view of the relief valve piston of fig. 1.
Fig. 7 is a schematic view of the screen of fig. 1.
In the figure: 1. a control valve housing; 2. an air inlet valve base; 3. a secondary spring; 4. an air intake valve; 5. polyimide resin washers; 6. a locking spacer; 7. a high sensitivity pressure control membrane; 8. a clamp ring; 9. a threaded sleeve; 10. a lock nut; 11. a main spring; 12. a dual-chamber spool; 13. an adjusting flange; 14. a safety valve end cap; 15. a safety valve spring; 16. a safety valve piston; 17. high damping vibration attenuation sealing rubber ring; 18. a filter screen; 19. a venting channel; 20. air passing holes; 21. and a vent hole.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application.
Referring to fig. 1 to 7, the embodiment of the application provides a miniature high-sensitivity multifunctional pressure control valve, which mainly comprises a control valve housing 1, an air inlet valve base 2, an auxiliary spring 3, an air inlet valve 4, a polyimide resin gasket 5, a locking gasket 6, a high-sensitivity pressure control film 7, a compression ring 8, a threaded sleeve 9, a locking nut 10, a main spring 11, a double-cavity valve core 12, an adjusting flange 13, a safety valve end cover 14, a safety valve spring 15, a safety valve piston 16, a high-damping vibration-damping sealing rubber ring 17 and a filter screen 18.
The high-sensitivity pressure control film 7 is made of silicon or a polymer material for converting pressure changes externally applied thereto into mechanical movements for pressure control. The high damping vibration attenuation sealing rubber ring 17 is made of nitrile rubber or silicone rubber to reduce transmission of mechanical vibration and provide effective sealing performance.
The control valve shell 1 is a product installation matrix, integrates an input interface S, an output interface P and an adjusting interface T, and is internally provided with a high-pressure cavity A, a low-pressure cavity B and an adjusting cavity C, wherein the input interface S is connected with the high-pressure cavity A, the output interface P is connected with the low-pressure cavity B, and the adjusting interface T is connected with the adjusting cavity C.
The screen 18 is mounted in a threaded flow path between the inlet port S and the high pressure chamber a.
The locking gasket 6, the high-sensitivity pressure control film 7, the clamp ring 8, the threaded sleeve 9, the main spring 11, the safety valve end cover 14, the safety valve spring 15, the safety valve piston 16 and the high-damping vibration attenuation sealing rubber ring 17 are installed in the shell adjusting cavity C through the double-cavity valve core 12 as a base, the product locking gasket 6 is fixedly connected with the double-cavity valve core 12 through threads, the high-sensitivity pressure control film 7 is installed between the locking gasket 6 and the double-cavity valve core 12, the sealing performance of the film is guaranteed through setting the threaded locking moment, and the edge of the high-sensitivity pressure control film 7 is pressed on the sealing end face of the shell adjusting cavity C through the clamp ring 8. The threaded sleeve 9 is screwed into the housing adjustment chamber C and presses the compression ring 8. The safety valve end cover 14, the safety valve spring 15, the safety valve piston 16 and the high damping vibration attenuation sealing rubber ring 17 are arranged in the inner cavity of the double-cavity valve core 12 to form a safety valve module. The double-cavity valve core 12 is assembled with the inner wall of the threaded sleeve 9 in a matched manner, the outer cavity of the double-cavity valve core is provided with the main spring 11, the adjusting flange 13 is arranged on the outer thread of the control valve shell 1, and the initial pre-tightening amount of the main spring 11 is limited and is locked through the locking nut 10.
The auxiliary spring 3, the air inlet valve 4 and the polyimide resin gasket 5 are arranged in the low-pressure cavity B of the shell by taking the air inlet valve base 2 as a base. The product auxiliary spring 3 and the air inlet valve 4 are assembled into the inner cavity of the air inlet valve base 2 through clearance fit, the polyimide resin gasket 5 is adhered to the upper end of the air inlet valve 4 through an adhesive, and the air inlet valve base 2 is connected into the low-pressure cavity B of the shell through threads.
The filter screen 18 has a mounting interface size M4 and a first port diameter of the high pressure chamber ofThe second port diameter is->
The high-sensitivity pressure control film 7 is circular in shape and has a diameter ofThe thickness is 0.5mm; the external thread specification of the threaded sleeve 9 is M18×0.5, and the diameter of the inner cylindrical mating surface is +.>The height is 12mm; the rigidity of the main spring 11 is 2.50N/mm, the free height is 11.5mm, and the pre-pressing amount is 1mm; as shown in FIG. 5, the safety valve cap 14 has an external thread specification of M8×0.5 and an internal diameter of +.>The height is 2.0mm; the safety valve piston 16 and the high damping vibration attenuation sealing rubber ring 17 are combined together in a vulcanization mode, and the outer diameter of the safety valve piston 16 is +.>The inner diameter is +.>The rigidity of the safety valve spring 15 is 0.6N/mm, the free height is 10.0mm, and the pre-pressing amount is 1.5mm; the dual-chamber valve core 12 is shown in FIG. 3, and has an outer diameter of +.>The diameter of the probe rod at the lower end head is +.>The diameter of the inner cavity is->The diameter of the outer circle of the outer cavity isThe height is 18.0mm.
As shown in FIG. 4, the inner diameter of the intake valve 4 isThe height of the polyimide resin gasket is 8.0mm, and the polyimide resin gasket 5 is provided with a diameter +.>Is tightly matched with the assembly hole of the assembly rod; the rigidity of the auxiliary spring 3 is 0.3N/mm, the free height is 8.5mm, and the pre-pressing amount is 1mm; the air inlet valve base 2 and the low-pressure cavity are connected through M10 threads, and the air inlet valve base 2 comprises a valve body with an inner diameter of +.>And a cylindrical section of the secondary spring 3 is built in.
The working principle of the miniature high-sensitivity multifunctional pressure control valve of the embodiment is as follows:
in the non-working state, the inlet is working pressure, and the air inlet valve 4 is in a closed position under the action of the adjusting flange 13, the locking nut 10, the main spring 11 and the auxiliary spring 3, namely, the high-pressure cavity A and the low-pressure cavity B are sealed and cut off through the polyimide resin gasket 5.
When the air inlet valve is in a working state, high-pressure air enters the high-pressure cavity A through the input interface S, the air is throttled through an annular gap between the conical surface of the air inlet valve 4 and the valve seat to form pressure drop, and the low-pressure air after the pressure drop enters the low-pressure cavity B; one path of gas in the low-pressure cavity B flows to a load from the output interface P, the other path of gas acts on the high-sensitivity pressure control film 7 and continuously acts on the main spring 11 and the adjusting flange 13 in an upward feedback way, and the output pressure is adjusted by manually screwing the adjusting flange 13, so that the whole valve is in a dynamic balance state; when the outlet pressure is higher than the rated output pressure, the force acting on the air inlet valve 4 is increased, the balance state of the force is destroyed, the air inlet valve 4 is driven to move upwards, the throttling area is reduced, the output pressure is reduced until the new force balance is achieved, and the stable rated outlet pressure is maintained; conversely, when the outlet pressure is lower than the rated output pressure, the force drives the intake valve 4 to move downward, the throttle area increases, and the output pressure increases. By adjusting the adjusting flange 13, the pressure output by the valve can be changed, and by tightening the lock nut 10, the position of the adjusting flange 13 can be fixed for calibrating the operating pressure of the adjusting valve.
When the system is abnormal, the input interface S exceeds the designed safety value, the high-pressure gas pushes the safety valve piston 16 to move upwards, the high-damping vibration attenuation sealing rubber ring 17 is separated from the sealing structure of the double-cavity valve core 12, namely the gas passing hole 20 is communicated with the gas discharging channel 19, the gas passing hole 20 and the gas discharging hole 21 are communicated with the low-pressure cavity and the outside, the high-pressure gas sequentially passes through the gas discharging channel 19 of the double-cavity valve core 12, flows through the gas passing hole 20 of the safety valve piston 16, passes through the safety valve spring 15 and then reaches the gas discharging hole 21 of the safety valve end cover 14, so that pressure relief is realized, the pressure relief is realized to the outside of the control valve, high-frequency whistle is generated during high-speed circulation and pressure relief, the early warning function is played, and other components of the whole system are protected.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (6)

1. The miniature high-sensitivity multifunctional pressure control valve is characterized by comprising a control valve shell (1), wherein the control valve shell (1) is provided with an input interface, an output interface, an adjusting interface, a high-pressure cavity and a low-pressure cavity;
the high-pressure cavity comprises a first port detachably connected with the air inlet valve base (2), a second port communicated with the input interface and a third port provided with a first control component and leading to the low-pressure cavity; the first control component comprises an air inlet valve (4), a secondary spring (3) elastically extruded between the air inlet valve (4) and an air inlet valve base (2), and a polyimide resin gasket (5) connected with the air inlet valve (4) and used for cutting off a third port of the high-pressure cavity;
the low pressure chamber includes a first port matching the high pressure chamber, a second port in communication with the output port, and a third port leading to the regulation port;
the second upper control assembly comprises a high-sensitivity pressure control film (7) for sealing a third port of the low-pressure cavity, a compression ring (8) which is pressed down on the edge of the high-sensitivity pressure control film (7), and a threaded sleeve (9) which is pressed down on the compression ring (8) and is connected with the inner wall of the adjustment interface in a threaded manner, and an adjustment flange (13) which is used for limiting the top end position of the threaded sleeve (9) and is connected with the outer wall of the control valve shell (1) in a threaded manner;
the device comprises a threaded sleeve (9), a threaded control assembly, a first control assembly, a second control assembly, a safety valve piston (16), a safety valve spring (15), a safety valve end cover (14), a high-damping vibration attenuation sealing rubber ring (17), a high-sensitivity pressure control film (7), a locking gasket (6) and a high-sensitivity pressure control film, wherein the threaded sleeve (9) is internally provided with the first control assembly, the first control assembly comprises a double-cavity valve core (12) coaxially and slidably matched in the threaded sleeve (9), the main spring (11) is elastically compressed between the bottom of an outer cavity of the double-cavity valve core (12) and an adjusting flange (13), the safety valve piston (16) is slidably assembled in an inner cavity of the double-cavity valve core (12), the safety valve spring (15) is positioned in the safety valve piston (16), the safety valve end cover (14) is in threaded connection with the inner cavity of the double-cavity valve core (12) and is pressed at the upper end of the safety valve spring (15), the high-damping vibration attenuation sealing rubber ring (17) is assembled at the bottom end of the double-cavity valve core (12), and the middle part of the high-sensitivity pressure control film (7) is sealed and fixed on a locking gasket (6) of the double-cavity valve core (12);
the double-cavity valve core (12) is provided with a gas leakage channel (19), the lower end of the gas leakage channel (19) is communicated with the low-pressure cavity, the safety valve piston (16) is provided with a gas passing hole (20) which is vertically communicated, the safety valve end cover (14) is provided with a gas leakage hole (21), the gas passing hole (20) and the gas leakage channel (19) can be cut off through the high-damping vibration reduction sealing rubber ring (17), and when the gas passing hole (20) and the gas leakage channel (19) are communicated, the gas leakage channel (19), the gas passing hole (20) and the gas leakage hole (21) are communicated with the low-pressure cavity and the outside to realize pressure relief, and high-frequency sound can be generated during pressure relief.
2. Miniature high-sensitivity multifunctional pressure control valve according to claim 1, characterized in that the control valve housing (1) is screwed with a lock nut (10), by means of which lock nut (10) the adjusting flange (13) can be completely fixed relative to the control valve housing (1).
3. The miniature high-sensitivity multifunctional pressure control valve according to claim 1, characterized in that a filter screen (18) is provided at both the second port of the low-pressure chamber and the second port of the high-pressure chamber.
4. A miniature high-sensitivity multifunctional pressure control valve according to claim 3, characterized in that the mounting interface of said filter screen (18) is of size M4, the first port diameter of said high-pressure chamber isThe second port diameter is->
5. According to claim 1Is characterized in that the high-sensitivity pressure control film (7) is round and has a diameter ofThe thickness is 0.5mm; the external thread specification of the threaded sleeve (9) is M18×0.5, and the diameter of the inner cylindrical matching surface is +.>The height is 12mm; the rigidity of the main spring (11) is 2.50N/mm, the free height is 11.5mm, and the pre-pressing amount is 1mm; the external thread specification of the safety valve end cover (14) is M8×0.5, and the internal diameter is +.>The height is 2.0mm; the safety valve piston (16) and the high damping vibration attenuation sealing rubber ring (17) are combined together in a vulcanization mode, and the outer diameter of the safety valve piston (16) is +>The inner diameter is +.>The rigidity of the safety valve spring (15) is 0.6N/mm, the free height is 10.0mm, and the pre-pressing amount is 1.5mm; the outer diameter of the double-cavity valve core (12) is +.>The diameter of the probe rod at the lower end head is +.>The diameter of the inner cavity is->The diameter of the outer circle of the outer cavity is->The height is 18.0mm.
6. The miniature high-sensitivity multifunctional pressure control valve according to claim 1, characterized in that the inner diameter of the air inlet valve (4) isThe height of which is 8.0mm, and the diameter of which is +.>Is tightly matched with the assembly hole of the assembly rod; the rigidity of the auxiliary spring (3) is 0.3N/mm, the free height is 8.5mm, and the pre-pressing amount is 1mm; the air inlet valve base (2) is in threaded connection with the low-pressure cavity through M10, and the air inlet valve base (2) comprises a valve body with an inner diameter of +>And a cylinder section of the auxiliary spring (3) is arranged in the cylinder section.
CN202311066397.XA 2023-08-23 2023-08-23 Miniature high-sensitivity multifunctional pressure control valve Pending CN117006285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311066397.XA CN117006285A (en) 2023-08-23 2023-08-23 Miniature high-sensitivity multifunctional pressure control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311066397.XA CN117006285A (en) 2023-08-23 2023-08-23 Miniature high-sensitivity multifunctional pressure control valve

Publications (1)

Publication Number Publication Date
CN117006285A true CN117006285A (en) 2023-11-07

Family

ID=88569053

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311066397.XA Pending CN117006285A (en) 2023-08-23 2023-08-23 Miniature high-sensitivity multifunctional pressure control valve

Country Status (1)

Country Link
CN (1) CN117006285A (en)

Similar Documents

Publication Publication Date Title
US6708712B2 (en) Pressure regulator utilizing a disc spring
US8695765B2 (en) Shock absorber having resilient device in rebound chamber
EP0331665B1 (en) Droop compensated direct acting pressure regulator
US8869827B2 (en) Pressure regulator
EP3551914B1 (en) Flow and pressure stabilization systems, methods, and devices
WO2004049084A2 (en) A gas pressure regulator
US3774628A (en) Pressure regulator
RU2406903C1 (en) Reducing valve
US5520215A (en) Pressure regulator and dampener assembly
US5062449A (en) Vibration dampener for direct acting pressure regulator
US9128491B2 (en) Regulator for corrosive gas tapping in under-atmospheric conditions
CN117006285A (en) Miniature high-sensitivity multifunctional pressure control valve
US20080135110A1 (en) Bi-directional positive/negative pressure relief valve
US20100200084A1 (en) Pressure control system and pressure regulating valve thereof
CN111022554B (en) Thread damping piston
US20200018402A1 (en) Automatic back-pressure valve for use in supercritical fluid chromatographic system
CN213332576U (en) High back pressure spring relief valve
CN109854559A (en) A kind of parallel spring safety valve of low frequency response
GB2298026A (en) Pressure reducing valve
CN113719656B (en) Follow-up valve core assembly, direct-acting overflow valve and pilot-operated overflow valve
CN212657309U (en) Air pressure type adjusting pressure reducing valve
US20230151899A1 (en) Mechanical valve for pressure control
CN116557601B (en) Pressure reducing valve of multi-sensitive piston multi-resetting device
CN117823691A (en) Piston type miniature pressure control valve with feedback adjustment
CN116538330B (en) Pressure reducing valve with multiple sensitive pistons

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