CN115435124A - Self-operated nitrogen seals governing valve for pressure relief device - Google Patents

Self-operated nitrogen seals governing valve for pressure relief device Download PDF

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Publication number
CN115435124A
CN115435124A CN202210959489.XA CN202210959489A CN115435124A CN 115435124 A CN115435124 A CN 115435124A CN 202210959489 A CN202210959489 A CN 202210959489A CN 115435124 A CN115435124 A CN 115435124A
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China
Prior art keywords
valve
chuck
self
rod
sleeve
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CN202210959489.XA
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Chinese (zh)
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CN115435124B (en
Inventor
罗华明
陆国军
李�瑞
罗扬
章国林
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Hangzhou Fischer Technology Co ltd
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Hangzhou Fischer Technology Co ltd
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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
    • 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
    • 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
    • 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
    • F16K37/0008—Mechanical means
    • F16K37/0016—Mechanical means having a graduated scale
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The invention discloses a self-operated regulating valve for a nitrogen-sealed pressure reducing device, which comprises a valve seat and a valve sleeve, and comprises a box body shell and a heat exchanger, wherein the heat exchanger is fixedly arranged in the box body shell; utilize the setting of transfer controlling part for this formula of relying on oneself nitrogen seals governing valve for pressure relief device has pressure control and adjusts the structure, makes it can correspond according to the internal nitrogen pressure of jar and adjusts, adapts to different use scenes, promotes the flexibility when this formula of relying on oneself nitrogen seals governing valve for pressure relief device uses.

Description

Self-operated nitrogen seals governing valve for pressure relief device
Technical Field
The invention belongs to the technical field of regulating valves, and particularly relates to a regulating valve for a self-operated nitrogen seal pressure reducing device.
Background
This formula of relying on oneself nitrogen seals governing valve for pressure relief device is one kind and uses in the nitrogen gas seals up the in-process of depositing, carries out the valve body structure of formula of relying on oneself pressure adjustment operation to the nitrogen gas of pouring into in the jar body, can carry out corresponding regulation according to the nitrogen gas pressure in the jar body through it.
Patent No. CN 109506022A's patent file discloses a nitrogen seals formula of relying on oneself governing valve suitable for ultralow pressure adjustment, which comprises a valve body, be equipped with the disk seat in the valve body, the one end of valve body is equipped with the end cover, the one end that the end cover was kept away from to the valve body is equipped with the valve gap, the valve gap is kept away from the valve body end and is connected with down the membrane lid and be connected with the membrane lid under on the membrane lid, the membrane lid is equipped with the diaphragm with the inside of last membrane lid down, be equipped with in the end cover and run through the valve body and disk seat and stretch into down the valve rod between membrane lid and the last membrane lid, the one end at the valve rod is fixed to the diaphragm, the end connection who goes up the membrane lid and keep away from down the membrane lid has the spring housing, the one end of spring housing is equipped with the pressure regulating nut cover and is equipped with the pressure regulating lead screw in the pressure regulating nut cover, the tip that the pressure regulating lead screw was kept away from the nut cover is equipped with the mounting disc and is equipped with the spring on the mounting disc. The pressure regulating device has the advantages of compact structure, sensitive regulation, wide use occasions and targeted pressure regulating range.
The self-operated regulating valve has certain defects when in use, the self-operated regulating valve adopts a spring structure to control the opening and closing of the valve body, and the self-operated regulating valve does not have a pressure control structure, so that the self-operated regulating valve cannot be correspondingly regulated according to the upper limit of pressure, the self-operated regulating valve can only be suitable for the nitrogen pressure in a fixed range, and the flexibility of the self-operated regulating valve in use is reduced; secondly, the self-operated regulating valve does not have a splicing type combined structure, and after the self-operated regulating valve is used for a long time, the spring structure in the self-operated regulating valve can be fatigued, so that the pressure control effect of the self-operated regulating valve is reduced; meanwhile, the self-operated regulating valve is not provided with a self-locking fixing structure, and is controlled by the pressure, so that the self-operated regulating valve is not provided with a locking sealing structure, the self-operated regulating valve cannot be locked and sealed according to the use requirement, and the self-operated regulating valve is single in functionality.
Disclosure of Invention
The invention aims to provide a regulating valve for a self-operated nitrogen seal pressure reducing device, which can solve the existing problems.
The invention solves the problems that:
1. the self-operated regulating valve adopts a spring structure to control the opening and closing of the valve body, and the self-operated regulating valve does not have a pressure control structure, so that the self-operated regulating valve cannot be correspondingly regulated according to the upper limit of pressure, the self-operated regulating valve can only be suitable for the nitrogen pressure in a fixed range, and the flexibility of the self-operated regulating valve in use is reduced;
2. the self-operated regulating valve does not have a splicing type combined structure, and after the self-operated regulating valve is used for a long time, the spring structure in the self-operated regulating valve can be fatigued, so that the pressure control effect of the self-operated regulating valve is reduced;
3. the self-operated regulating valve is not provided with a self-locking fixing structure, and is controlled by the pressure, so that the self-operated regulating valve is not provided with a locking sealing structure, the self-operated regulating valve cannot be locked and sealed according to the use requirement, and the self-operated regulating valve is single in functionality.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a formula of relying on oneself nitrogen seals governing valve for pressure relief device, includes disk seat and valve barrel, valve barrel fixed mounting is in the upper end surface middle part position of disk seat, the equal movable mounting in inboard of disk seat and valve barrel has the valve rod, the lower extreme surface of valve rod is located the inboard movable mounting of disk seat has the sealing plug, the upper end surface middle part fixed mounting of valve barrel has the butt joint sleeve pipe, butt joint sheathed tube inside fixed mounting has fixing chuck, and fixing chuck cup joints at the surface of valve rod, fixing chuck's inboard is equipped with the arc card pad that is used for controlling the valve rod, butt joint sheathed tube upper end surface fixed mounting has lower gland, the upper portion of lower gland is equipped with the gland, the tight pressing piece is installed to the inboard of lower gland and last gland, and the tight pressing piece setting is in the upper end of valve rod, the upper end middle part fixed mounting of going up the gland has the regulating part that is used for adjusting the valve rod.
As a further technical scheme of the invention, a sealing ring is fixedly mounted on the outer surface of the side edge of the sealing plug, a thread cutting sleeve is arranged in the middle of the upper end of the sealing plug, the sealing plug and the valve rod are fixedly butted through the thread cutting sleeve, the sealing plug and the valve rod can be disassembled by the aid of the thread cutting sleeve, and meanwhile, the sealing performance of the sealing plug during closing can be improved and the using effect of the sealing plug can be improved by the aid of the sealing ring.
As a further technical scheme, a second threaded rod used for driving the arc-shaped clamping pad is movably mounted on the inner side of the fixed chuck, a telescopic sleeve rod is fixedly mounted in the middle of the side edge of the arc-shaped clamping pad, the telescopic sleeve rod is in butt joint with the second threaded rod through a rotating shaft, and a user rotates the second threaded rod to enable the second threaded rod to drive the telescopic sleeve rod to move by means of a threaded structure, so that the arc-shaped clamping pad is clamped on the outer surface of the valve rod by the telescopic sleeve rod, and the valve rod is prevented from moving.
As a further technical scheme of the invention, the inner side of the fixed chuck is provided with a limiting chute, the outer surface of the side edge of the telescopic sleeve rod is provided with a clamping block matched with the limiting chute for use, the clamping block is matched with the limiting chute for use, so that the telescopic sleeve rod can only be adjusted in a telescopic way, and when the second threaded rod rotates, the second threaded rod can be prevented from driving the telescopic sleeve rod to rotate by using the rotating shaft, so that the arc-shaped clamping pad is prevented from rotating.
As a further technical scheme, the pressing part comprises a lower chuck and an upper chuck, the upper chuck is movably mounted at the upper part of the lower chuck, a spring is arranged between the lower chuck and the upper chuck, clamping grooves matched with the spring are formed in the surfaces of the lower chuck and the upper chuck, the lower chuck and the upper chuck have certain elasticity by the aid of the arrangement of the spring, the lower chuck is fixed on the outer surface of the upper end of the valve rod, when the pressure of nitrogen at the air inlet end of the valve seat is too high, the sealing plug is jacked up by air in the valve seat to drive the valve rod to move upwards, and the lower chuck is jacked upwards by the valve rod to enable the spring between the lower chuck and the upper chuck to be extruded and deformed to keep the lower chuck in an opening state.
As a further technical scheme of the invention, the lower chuck and the upper chuck are movably connected through a telescopic rod, a clamping groove is formed in the outer surface of the lower end of the telescopic rod, a threaded clamping ring is fixedly mounted in the middle of the upper end of the upper chuck, the lower chuck and the upper chuck are kept in a movable state through the arrangement of the telescopic rod, and the lower chuck and the upper chuck can be provided with elastic pressing structures through matching with a spring.
As a further technical scheme, the regulating and controlling part comprises a fixed disc and a first threaded rod, the first threaded rod is movably mounted in the middle of the inner side of the fixed disc, a butt joint clamping sleeve is movably mounted on the outer surface of the lower end of the first threaded rod, the butt joint clamping sleeve and the threaded clamping ring are mutually butted, when a user rotates the first threaded rod, the first threaded rod is enabled to extrude the upper chuck through the butt joint clamping sleeve, so that the pressure of a spring between the upper chuck and the lower chuck is regulated, the spring is matched with the valve rod to use, a pressure control regulating effect is achieved on a sealing plug at the lower end of the valve rod, and the sealing plug can be suitable for different pressure conditions.
As a further technical scheme of the invention, the first threaded rod is movably butted with the butting clamping sleeve through the rotating cap, the fixed disc is butted and fixed with the upper pressing cover through the fixed bolt, and the first threaded rod and the butting clamping sleeve are kept in a movable state by utilizing the arrangement of the rotating cap, so that the first threaded rod is prevented from driving the butting clamping sleeve to rotate, and the first threaded rod is prevented from driving the upper chuck to rotate.
As a further technical scheme of the invention, a sealing sleeve is sleeved between the valve seat and the valve rod, sealing filler is filled at the upper part of the inner side of the valve seat, a scale bar is fixedly installed at the inner side of the valve sleeve, and a stroke pointer matched with the scale bar for use is fixedly installed on the outer surface of the valve rod.
The invention has the beneficial effects that:
1. through setting up the regulation and control part, when this self-operated nitrogen seals the governing valve for the pressure relief device and uses, the regulation and control part utilizes the gim peg to install on the upper portion of upper gland, make the tight casting die have the pressure control regulation structure, when its operation, when the nitrogen gas pressure of disk seat inlet end is too big, gas in the disk seat jacks up the sealing plug, make the sealing plug drive the valve rod and shift up, utilize the valve rod to jack up lower chuck, make the spring extrusion deformation between lower chuck and the upper chuck, make lower chuck keep the open mode, when the user rotates first threaded rod, make first threaded rod extrude upper chuck through the butt joint cutting ferrule, thereby adjust the pressure size of spring between upper chuck and the lower chuck, spring cooperation valve rod uses, play the pressure control regulation effect to the sealing plug of valve rod lower extreme, make the sealing plug can be suitable for different pressure situations, when first threaded rod drive butt joint cutting ferrule moves down, the spring compression between upper chuck and the lower chuck, make sealing plug self pressure increase, when first threaded rod drive the butt joint cutting ferrule to shift up, spring release between upper chuck and lower chuck, make self-operated pressure regulation effect, make the self-operated nitrogen seals the regulating valve for the setting of pressure regulation device and can make the regulation of this self-operated nitrogen gas seal device to carry out when the pressure regulation device and make it correspond to use the regulation structure, the self-operated nitrogen sealing plug, when the self-operated pressure regulation device and make it can be suitable for the regulation device.
2. Through setting up the pressing part, after this self-reliance nitrogen seals pressure relief device uses the governing valve for a long time, the user can take off the bolt between last gland and the lower gland, take off the gim peg of regulating part simultaneously, will regulate and separate between controlling part and the last gland, will go up again and separate between gland and the lower gland, utilize the helicitic texture with the separation between valve rod and the lower chuck, make the pressing part take off from the lower gland, utilize the setting of telescopic link, make lower chuck and last chuck keep the active state, make it cooperate the spring, can make lower chuck and last chuck have elasticity and sticis the structure, the user passes through the draw-in groove formula butt joint structure of telescopic link lower extreme, with the separation between telescopic link and the lower chuck, make and separate between lower chuck and the upper chuck, thereby will take off the spring between lower chuck and the upper chuck, convenience of use person changes the operation to the spring, utilize the setting of pressing part, make this self-reliance nitrogen seals pressure relief device have concatenation formula integrated configuration, make its elastic construction can change the operation, avoid it to appear elasticity fatigue phenomenon, promote its result of use.
3. Through setting up fixing chuck and arc card pad, when this formula of relying on oneself nitrogen seals governing valve for pressure relief device uses, the user is through rotating the second threaded rod, make the second threaded rod utilize the flexible loop bar of helicitic texture drive to remove, make flexible loop bar with the chucking of arc card pad at the surface of valve rod, avoid the valve rod to appear the removal phenomenon, thereby accomplish the locking fixed operation to valve rod and disk seat, secondly, utilize the use of the spacing spout of fixture block cooperation, play spacing fixed action to the flexible loop bar, make flexible loop bar only can do flexible regulation, when the second threaded rod rotates, utilize the setting of pivot, can avoid the second threaded rod to drive flexible loop bar and rotate, thereby prevent that the arc card pad from rotating, through setting up fixing chuck and arc card pad, make this formula of relying on oneself nitrogen seals governing valve for pressure relief device has locking seal structure, make formula of relying on oneself governing valve can lock the sealing operation according to the user demand, promote its self-functionality.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of a regulating valve for a self-operated nitrogen-sealed pressure reducing device according to the present invention;
FIG. 2 is an internal structure diagram of a regulating member in a regulating valve for a self-operated nitrogen seal pressure reducing device according to the invention;
FIG. 3 is an overall structure diagram of a pressing member in a regulating valve for a self-operated nitrogen-sealed pressure reducing device according to the present invention;
FIG. 4 is a plan view of a fixing chuck of a regulating valve for a self-operated nitrogen-sealed pressure reducing device according to the present invention;
fig. 5 is an overall structure diagram of a sealing plug in a regulating valve for a self-operated nitrogen-sealed pressure reducing device.
In the figure: 1. a valve seat; 2. a sealing plug; 3. turning the cap; 4. sealing the filler; 5. a valve housing; 6. butting the sleeve; 7. pressing the piece tightly; 8. adjusting a control piece; 9. a gland is arranged; 10. a lower gland; 11. fixing the chuck; 12. a valve stem; 13. a trip pointer; 14. a scale bar; 15. a sealing sleeve; 16. butting a clamping sleeve; 17. a fixing bolt; 18. fixing the disc; 19. a first threaded rod; 20. a lower chuck; 21. a spring; 22. a telescopic rod; 23. an upper chuck; 24. a threaded snap ring; 25. an arc-shaped clamping pad; 26. a limiting chute; 27. a telescopic loop bar; 28. a second threaded rod; 29. a seal ring; 30. and (4) a threaded cutting sleeve.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, characteristics and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1-5, a self-operated regulating valve for a nitrogen-sealed pressure reducing device includes a valve seat 1 and a valve sleeve 5, the valve sleeve 5 is fixedly installed at a middle position of an upper outer surface of the valve seat 1, a valve rod 12 is movably installed at inner sides of the valve seat 1 and the valve sleeve 5, a sealing plug 2 is movably installed at an inner side of the valve seat 1 at an outer surface of a lower end of the valve rod 12, a docking sleeve 6 is fixedly installed at a middle position of an upper outer surface of the valve sleeve 5, a fixing chuck 11 is fixedly installed inside the docking sleeve 6, the fixing chuck 11 is sleeved on an outer surface of the valve rod 12, an arc-shaped clamping pad 25 for controlling the valve rod 12 is installed at an inner side of the fixing chuck 11, a lower gland 10 is fixedly installed at an outer surface of an upper end of the docking sleeve 6, an upper gland 9 is installed at an upper portion of the lower gland 10, a pressing member 7 is installed at inner sides of the lower gland 10 and the upper gland 9, the pressing member 7 is installed at an upper end of the valve rod 12, and a regulating member 8 for regulating the valve rod 12 is fixedly installed at a middle position of the upper gland 9.
Fixed surface installs sealing washer 29 on the side of sealing plug 2, the upper end middle part position of sealing plug 2 is equipped with screw thread cutting ferrule 30, through screw thread cutting ferrule 30 butt joint between sealing plug 2 and the valve rod 12 fixed, utilize screw thread cutting ferrule 30's setting, can be to dismantling the operation between sealing plug 2 and the valve rod 12, utilize sealing washer 29's setting simultaneously, can promote the leakproofness when sealing plug 2 closes, promote its result of use.
The inboard movable mounting of fixing chuck 11 has the second threaded rod 28 that is used for driving arc card pad 25, arc card pad 25's side middle part fixed position installs flexible loop bar 27, dock through the pivot between flexible loop bar 27 and the second threaded rod 28, the user is through rotating second threaded rod 28, make second threaded rod 28 utilize the flexible loop bar 27 of helicitic texture drive to remove, make flexible loop bar 27 with arc card pad 25 chucking at the surface of valve rod 12, avoid valve rod 12 the removal phenomenon to appear.
The inboard of fixing chuck 11 is equipped with spacing spout 26, and the side surface of flexible loop bar 27 is equipped with the fixture block that cooperates spacing spout 26 to use, utilizes the use of fixture block cooperation spacing spout 26, plays spacing fixed action to flexible loop bar 27 for flexible regulation can only be done to flexible loop bar 27, and when second threaded rod 28 rotated, the setting of utilization pivot can be avoided second threaded rod 28 to drive flexible loop bar 27 and rotate, thereby prevents that arc card pad 25 from rotating.
The pressing piece 7 comprises a lower chuck 20 and an upper chuck 23, the upper chuck 23 is movably mounted on the upper portion of the lower chuck 20, a spring 21 is arranged between the lower chuck 20 and the upper chuck 23, clamping grooves matched with the spring 21 are formed in the surfaces of the lower chuck 20 and the upper chuck 23, the spring 21 is arranged, certain elasticity is formed between the lower chuck 20 and the upper chuck 23, meanwhile, the lower chuck 20 is fixed on the outer surface of the upper end of the valve rod 12, when the pressure of nitrogen at the air inlet end of the valve seat 1 is too large, the sealing plug 2 is jacked up by gas in the valve seat 1, the sealing plug 2 drives the valve rod 12 to move upwards, the lower chuck 20 is jacked up upwards by the valve rod 12, the spring 21 between the lower chuck 20 and the upper chuck 23 is extruded and deformed, and the lower chuck 20 is kept in an opening state.
Lower chuck 20 and last chuck 23 between through telescopic link 22 swing joint, and the lower extreme surface of telescopic link 22 is equipped with the draw-in groove, and the upper end middle part fixed mounting of going up chuck 23 has screw thread snap ring 24, utilizes telescopic link 22's setting for lower chuck 20 and last chuck 23 keep the active state, make its cooperation spring 21, can make lower chuck 20 and last chuck 23 have elasticity and sticis the structure.
The adjusting part 8 comprises a fixed disc 18 and a first threaded rod 19, the first threaded rod 19 is movably arranged at the middle position of the inner side of the fixed disc 18, the lower end outer surface of the first threaded rod 19 is movably provided with a butt joint clamping sleeve 16, the butt joint clamping sleeve 16 and a threaded clamping ring 24 are mutually butted, when a user rotates the first threaded rod 19, the first threaded rod 19 extrudes an upper chuck 23 through the butt joint clamping sleeve 16, the pressure of a spring 21 between the upper chuck 23 and a lower chuck 20 is adjusted, the spring 21 is matched with a valve rod 12 for use, the lower end sealing plug 2 of the valve rod 12 plays a role in pressure control and adjustment, and the sealing plug 2 can be suitable for different pressure conditions.
First threaded rod 19 and butt joint cutting ferrule 16 between through changeing the butt joint of 3 activities of cap, fixed disk 18 and go up between the gland 9 through gim peg 17 butt joint fixed, utilize the setting of changeing cap 3 for first threaded rod 19 and butt joint cutting ferrule 16 between keep active state, avoid first threaded rod 19 to drive and dock cutting ferrule 16 and rotate, prevent that first threaded rod 19 from driving chuck 23 and rotate.
A sealing sleeve 15 is sleeved between the valve seat 1 and the valve rod 12, the upper part of the inner side of the valve seat 1 is filled with sealing filler 4, the inner side of the valve sleeve 5 is fixedly provided with a scale bar 14, and the outer surface of the valve rod 12 is fixedly provided with a stroke pointer 13 matched with the scale bar 14 for use.
The regulating valve for the self-operated nitrogen sealing pressure reducing device is characterized in that a regulating part 8 is arranged, when the regulating valve for the self-operated nitrogen sealing pressure reducing device is used, the regulating part 8 is arranged on the upper part of an upper gland 9 by using a fixing bolt 17, so that a pressing part 7 has a pressure control regulating structure, when the regulating valve is operated, when the nitrogen pressure at the air inlet end of a valve seat 1 is overlarge, gas in the valve seat 1 jacks up a sealing plug 2, the sealing plug 2 drives a valve rod 12 to move upwards, a lower chuck 20 is jacked up by using the valve rod 12 upwards, a spring 21 between the lower chuck 20 and the upper chuck 23 is extruded and deformed, the lower chuck 20 is kept in an open state, when a user rotates a first threaded rod 19, the first threaded rod 19 extrudes the upper chuck 23 through a butting sleeve 16, the pressure of the spring 21 between the upper chuck 23 and the lower chuck 20 is regulated, and the spring 21 is matched with the valve rod 12 for use, the pressure control and regulation function is performed on the sealing plug 2 at the lower end of the valve rod 12, so that the sealing plug 2 can be suitable for different pressure conditions, when the first threaded rod 19 drives the butt joint clamping sleeve 16 to move downwards, the spring 21 between the upper chuck 23 and the lower chuck 20 is compressed, the pressure of the sealing plug 2 is increased, when the first threaded rod 19 drives the butt joint clamping sleeve 16 to move upwards, the spring 21 between the upper chuck 23 and the lower chuck 20 is released, the pressure of the sealing plug 2 is reduced, the pressure control and regulation function is performed on the valve seat 1, the pressure control and regulation function is performed by the setting of the regulation part 8, the regulating valve for the self-operated nitrogen sealing pressure reducing device is provided with a pressure control and regulation structure, the regulating valve can be correspondingly regulated according to the nitrogen pressure in the tank body, different use scenes are adapted, and the flexibility of the regulating valve for the self-operated nitrogen sealing pressure reducing device in use is improved;
by arranging the pressing piece 7, after the self-operated nitrogen sealing pressure reducing device is used for a long time by the adjusting valve, a user can take down a bolt between the upper gland 9 and the lower gland 10, simultaneously take down the fixing bolt 17 of the lower control piece 8, separate the adjusting piece 8 from the upper gland 9, separate the upper gland 9 from the lower gland 10, separate the valve rod 12 from the lower chuck 20 by using a threaded structure, so that the pressing piece 7 is taken down from the lower gland 10, the lower chuck 20 and the upper chuck 23 are kept in a movable state by using the arrangement of the telescopic rod 22, and are matched with the spring 21, so that the lower chuck 20 and the upper chuck 23 have an elastic pressing structure, the user can separate the telescopic rod 22 from the lower chuck 20 by using a clamping groove type butt joint structure at the lower end of the telescopic rod 22, so that the lower chuck 20 and the upper chuck 23 are separated, so that the spring 21 between the lower chuck 20 and the upper chuck 23 is taken down, the user can conveniently replace the spring 21, and the self-operated by using the arrangement of the pressing piece 7, so that the self-operated elastic pressing device has a combined structure, and can avoid the elastic fatigue splicing phenomenon, and the use effect of the self-operated;
through setting up fixing chuck 11 and arc card pad 25, when this self-operated nitrogen seals governing valve for pressure relief device uses, the user is through rotating second threaded rod 28, make second threaded rod 28 utilize the flexible loop bar 27 of helicitic texture drive to remove, make flexible loop bar 27 with the chucking of arc card pad 25 at the surface of valve rod 12, avoid valve rod 12 to appear moving phenomenon, thereby accomplish the locking fixed operation to valve rod 12 and disk seat 1, secondly, utilize the use of fixture block cooperation spacing spout 26, play spacing fixed action to flexible loop bar 27, make flexible loop bar 27 only can do flexible regulation, when second threaded rod 28 rotates, utilize the setting of pivot, can avoid second threaded rod 28 to drive flexible loop bar 27 and rotate, thereby prevent arc card pad 25 from rotating, through setting up fixing chuck 11 and arc card pad 25, make this self-operated nitrogen seals governing valve for pressure relief device have the locking, make self-operated governing valve can lock sealing operation according to the user demand, promote its self-operated sealing structure.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. The utility model provides a formula of relying on oneself nitrogen seals governing valve for pressure relief device, includes disk seat (1) and valve barrel (5), valve barrel (5) fixed mounting is in the upper end surface middle position of disk seat (1), the equal movable mounting in inboard of disk seat (1) and valve barrel (5) has valve rod (12), the inboard movable mounting that the lower extreme surface of valve rod (12) is located disk seat (1) has sealing plug (2), a serial communication port, the upper end surface middle position fixed mounting of valve barrel (5) has butt joint sleeve pipe (6), the inside fixed mounting of butt joint sleeve pipe (6) has fixed chuck (11), and fixed chuck (11) cup joint the surface at valve rod (12), the inboard of fixed chuck (11) is equipped with arc card pad (25) that are used for controlling valve rod (12), the upper end surface fixed mounting of butt joint sleeve pipe (6) has lower gland (10), the upper portion of lower gland (10) is equipped with gland (9), gland (7) are installed to the inboard of lower gland (10) and last gland (9), and the upper end setting of compressing part (7) is in the upper end of valve rod (12), the upper end position of upper gland (9) is installed and is used for regulating and is adjusted and adjusting part (8) of valve rod (8).
2. The regulating valve for the self-operated nitrogen seal pressure relief device according to claim 1, wherein a sealing ring (29) is fixedly mounted on the outer surface of the side edge of the sealing plug (2), a threaded sleeve (30) is arranged in the middle of the upper end of the sealing plug (2), and the sealing plug (2) and the valve rod (12) are in butt joint fixation through the threaded sleeve (30).
3. The regulating valve for the self-operated nitrogen sealing pressure reducing device according to claim 1, wherein a second threaded rod (28) for driving the arc-shaped clamping pad (25) is movably mounted on the inner side of the fixed chuck (11), a telescopic sleeve rod (27) is fixedly mounted in the middle of the side edge of the arc-shaped clamping pad (25), and the telescopic sleeve rod (27) is in butt joint with the second threaded rod (28) through a rotating shaft.
4. The regulating valve for the self-operated nitrogen sealing pressure reducing device according to claim 3, wherein the inner side of the fixed chuck (11) is provided with a limiting sliding groove (26), and the outer surface of the side edge of the telescopic loop bar (27) is provided with a clamping block matched with the limiting sliding groove (26).
5. The regulating valve for the self-operated nitrogen sealing pressure reducing device according to claim 1, wherein the pressing member (7) comprises a lower chuck (20) and an upper chuck (23), the upper chuck (23) is movably mounted at the upper part of the lower chuck (20), a spring (21) is arranged between the lower chuck (20) and the upper chuck (23), and clamping grooves matched with the spring (21) are arranged on the surfaces of the lower chuck (20) and the upper chuck (23).
6. The regulating valve for the self-operated nitrogen sealing pressure reducing device according to claim 5, wherein the lower chuck (20) and the upper chuck (23) are movably connected through a telescopic rod (22), a clamping groove is formed in the outer surface of the lower end of the telescopic rod (22), and a threaded clamping ring (24) is fixedly installed in the middle of the upper end of the upper chuck (23).
7. The regulating valve for the self-operated nitrogen seal pressure relief device according to claim 1, wherein the regulating member (8) comprises a fixed disk (18) and a first threaded rod (19), the first threaded rod (19) is movably mounted in the middle of the inner side of the fixed disk (18), and a butt joint clamping sleeve (16) is movably mounted on the outer surface of the lower end of the first threaded rod (19).
8. The regulating valve for the self-operated nitrogen-sealed pressure reducing device according to claim 7, wherein the first threaded rod (19) is movably butted with the butting sleeve (16) through a rotating cap (3), and the fixed disk (18) is butted and fixed with the upper gland (9) through a fixed bolt (17).
9. The regulating valve for the self-operated nitrogen seal pressure reducing device according to claim 1, wherein a sealing sleeve (15) is sleeved between the valve seat (1) and the valve rod (12), the upper part of the inner side of the valve seat (1) is filled with a sealing filler (4), the inner side of the valve sleeve (5) is fixedly provided with a scale bar (14), and the outer surface of the valve rod (12) is fixedly provided with a stroke pointer (13) matched with the scale bar (14) for use.
CN202210959489.XA 2022-08-11 2022-08-11 Self-operated nitrogen seal governing valve for pressure reducing device Active CN115435124B (en)

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Cited By (1)

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CN115929961A (en) * 2023-02-21 2023-04-07 四川旭信阀门制造有限公司 Self-operated pressure regulating valve and use method thereof

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US20120159940A1 (en) * 2009-05-01 2012-06-28 Yang Cong Pressure Regulating Device, Compressed Air Supply System and Motor Vehicle
CN202733089U (en) * 2012-06-21 2013-02-13 浙江科海仪表有限公司 Pressure release type self-operated pressure regulator
CN205938034U (en) * 2016-07-19 2017-02-08 浙江永盛科技股份有限公司 Formula of relying on oneself bellows governing valve
US20200224776A1 (en) * 2016-11-30 2020-07-16 Fujikin Incorporated Valve device, flow control method using the same, and semiconductor manufacturing method
CN211390644U (en) * 2019-12-20 2020-09-01 晋中职业技术学院 Financial management is with high safe machine of stamping

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Publication number Priority date Publication date Assignee Title
US20120159940A1 (en) * 2009-05-01 2012-06-28 Yang Cong Pressure Regulating Device, Compressed Air Supply System and Motor Vehicle
CN202733089U (en) * 2012-06-21 2013-02-13 浙江科海仪表有限公司 Pressure release type self-operated pressure regulator
CN205938034U (en) * 2016-07-19 2017-02-08 浙江永盛科技股份有限公司 Formula of relying on oneself bellows governing valve
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115929961A (en) * 2023-02-21 2023-04-07 四川旭信阀门制造有限公司 Self-operated pressure regulating valve and use method thereof
CN115929961B (en) * 2023-02-21 2023-05-12 四川旭信阀门制造有限公司 Self-operated pressure regulating valve and use method thereof

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