CN206036326U - Second grade gas pressure reduction valve - Google Patents
Second grade gas pressure reduction valve Download PDFInfo
- Publication number
- CN206036326U CN206036326U CN201620986507.3U CN201620986507U CN206036326U CN 206036326 U CN206036326 U CN 206036326U CN 201620986507 U CN201620986507 U CN 201620986507U CN 206036326 U CN206036326 U CN 206036326U
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Abstract
The utility model provides an export links to each other, and the centre is provided with the restricting orifice that second grade gas pressure reduction valve, by two pressure reducing valve group one -tenth, left side one -level relief pressure valve formal dress, right side second grade relief pressure valve are turned over and are adorned, the entry and the one -level relief pressure valve of second grade relief pressure valve. High -pressure gas is gaseous through the middling pressure that obtains a definite value after one -level relief pressure valve decompression and the steady voltage, and the middling pressure is gaseous to get into the second grade relief pressure valve through the restricting orifice, and the second grade relief pressure valve continues to make middling pressure gas pressure reduction and steady voltage to required low pressure gas with middling pressure gas pressure reduction and steady voltage, satisfies the requirement of gas piping system. Compared with the prior art, the utility model, it is showing the advantage: 1 ) outlet pressure control accuracy height, pressure stability, dynamic characteristic are good, and the pressure regulating range is big, pressure -relief is obvious, 2 ) sensing element and throttling valve core simultaneous reaction when the pressure regulating have reduced reaction aftereffect, make the pressure regulating response sooner, more accurate.
Description
Technical field
This utility model is related to gas pressure reducer field, specifically a kind of secondary gas air relief valve.
Background technology
Gas pressure reducer is a kind of orifice size by changing valve seat location, occurs the flow velocity and kinetic energy of medium particle
Change, cause different pressure drops, so as to the pressure for reaching and keeping outlet side different, and outlet pressure is made certainly using energy itself
The dynamic valve for meeting pre-provisioning request, widely uses gas pressure reducer high pressure air reducing to required low in gas piping system
Pressure, meets the needs of system.
Of home make gas pressure reducer mostly is the typical structure of single-stage at present, and main element has sensing element, throttling group
Part, reference load element, off-load element.Although single-stage pressure reducing valve possesses the function of blood pressure lowering and voltage stabilizing, but its outlet pressure
Precision is affected larger by the disturbance of inlet pressure with the accuracy of manufacture of pressure regulating spring with stability.Therefore for outlet pressure
The good occasion of control accuracy height, pressure stability, dynamic characteristic, single-stage representative gases air relief valve cannot meet requirement.
The content of the invention
This utility model patent solves disturbance of the inlet pressure change to outlet pressure, makes set-pressure stable at one
Work in the range of very little, there is provided a kind of new secondary gas air relief valve.
This secondary gas air relief valve, it is characterised in that by two reducer units into left side one-level pressure relief valve formal dress is right
Side second depressurized valve is counter to be filled, and the entrance of second depressurized valve is connected with the outlet of one-level pressure relief valve, and middle setting has restricting orifice.
One-level body cavity installs valve assembly and throttle valve seat, upper end connection one-level valve gap, end connection on one-step valve lid
One-level adjusting nut, one-step valve cover chamber and are internally formed the cavity that a length can be adjusted with one-level adjusting nut, in cavity
One-level spring pop-up, one-level are installed from top to bottom successively and adjust spring, one-level spring subiculum, first stage piston compacting ring；One-level bullet
Spring subiculum lower end is a cone, and it is coordinated with the conical socket of first stage piston compacting ring upper end, makes one-level adjust the pre- of spring
Clamp force all can be acted on first stage piston compacting ring, and the lower end of first stage piston compacting ring is valve assembly, and valve assembly is
Piston is connected with throttling valve core with two hex nuts, the connecting portion between piston and throttling valve core leans on O-ring back-up ring
With seal with O ring；Piston has a boss, and boss root drives a cannelure, constitutes damping ring with one-level valve gap lower end
Seam and damping cavity, are a cavity inside throttle valve seat, and upper end is cylindrical to constitute a circular passage with body cavity, and upper end is cylindrical
Radially there is a circle circumference uniform distribution hole, the hole is by circular passage and throttle valve seat connects with the internal cavities, referred to as outlet plenum；One-level valve body
Middle part is opened two holes and is connected with outlet plenum, and a hole is the pressure measurement interface of one-level pressure relief valve, and another hole is one-level pressure relief valve
Outlet；The seal boss of throttle valve seat lower end and the adjustable throttling circumferential weld of throttling valve core one aperture of formation, throttle valve seat lower end
It is referred to as entrance cavity with the cavity of one-level valve body composition.
Secondary valve intracoelomic cavity installs valve assembly and throttle valve seat, lower end connection secondary valve lid, the connection of secondary valve lid lower end
Two grades of regulation blind nuts, blind nut lower end connection locking nut and two grades of adjusting screws；Shape inside secondary valve lid and two grades of regulation blind nuts
Second piston compacting ring, two grades of regulation springs, two-level springs are installed from top to bottom successively to support in a cavity, cavity, two
The upper end of level piston compacting ring is valve assembly, and valve assembly is identical with the valve assembly of one-level pressure relief valve；Piston has one
Individual boss, boss root drive a cannelure, and with secondary valve cap-shaped into damping circumferential weld and damping cavity, throttle valve seat is reduced pressure with one-level
Valve throttle valve seat is identical, opens two holes and connect with outlet plenum in the middle part of secondary valve body, and a hole is the pressure measurement interface of second depressurized valve,
Another hole is the outlet of second depressurized valve 3.
The operation principle of this utility model patent：
Gases at high pressure obtain the medium pressure gas of certain value after one-level pressure relief valve decompression with voltage stabilizing, and medium pressure gas are by section
Discharge orifice plate enters second depressurized valve, and second depressurized valve continues medium pressure gas reduce pressure and voltage stabilizing, makes medium pressure gas decompression voltage stabilizing
To required low-pressure gas, the requirement of gas piping system is met.
This utility model compared with prior art, its remarkable advantage：
1）Control accuracy of outlet pressure height, pressure stability, dynamic characteristic are good；
2）Throttling valve core adopts metal to nonmetallic seal combination with the sealing surface of throttle valve seat, reduces sealing necessary
Than pressure, sealing surface itself can adsorbing contaminant, make sealing more stable, reliably；
3）Current limiting element " orifice plate " is set up between one-level pressure relief valve and second depressurized valve, for slowing down the prominent of inlet pressure
So change the impact caused to outlet pressure, improve entry condition；
4）Pressure regulation amplitude is big, effect of easing stress obvious, when inlet pressure isGases at high pressure by one-level decompression after export
Pressure is, after second depressurized, outlet pressure is, andIt is less than,It is less than；
5）Start-up course does not produce self-oscillation, working stability, long service life；
6）Sensing element and throttling valve core are combined into valve assembly by the valve, and in pressure regulation, sensing element is same with throttling valve core
Shi Fanying, reduces reaction aftereffect, make pressure regulation respond faster, it is more accurate；
7）Improve the utilization rate of source of the gas, more energy efficient environmental protection；
Description of the drawings：
Fig. 1 is structure principle chart of the present utility model
Fig. 2 is front view of the present utility model
Fig. 3 is right pseudosection of the present utility model
Fig. 4 is the profile of this utility model valve assembly
In figure, 1：One-level pressure relief valve；2：Restricting orifice；3：Second depressurized valve；4：One-level adjusting nut；5 one-level valve gaps；6：
One-level valve body；7：Secondary valve body；8：Secondary valve lid；9：Two grades of regulation blind nuts；10：Locking nut；11：Two grades of adjusting screws；12：
One-level spring pop-up；13：One-level adjusts spring；14：One-level spring subiculum；15：First stage piston compacting ring；16：Valve assembly；
17：Throttle valve seat；18：Second piston compacting ring；19：Two grades of regulation springs；20：Two-level spring is supported；21：Hex nut；22：
Piston；23：O-ring back-up ring；24：Throttling valve core.
Specific embodiment：
Below in conjunction with the accompanying drawings, the technical scheme of this utility model patent is described further.
In FIG：Left side 1 formal dress of one-level pressure relief valve, right side second depressurized valve 3 is anti-to be filled, the entrance of second depressurized valve 3 and
The outlet of level air relief valve 1 is connected, middle setting restricting orifice 2.
In fig. 2：Gases at high pressure are flowed into from 6 lower end of one-level valve body in left side, Jing reduce pressure twice with after voltage stabilizing from right side
Flow out in the middle of secondary valve body 7, outlet latus rectum is more than entrance latus rectum.
In figure 3：6 inner chamber of one-level valve body installs valve assembly 16 and throttle valve seat 17, upper end connection one-level valve gap 5, and one
Level valve gap 5 upper end connection one-level adjusting nut 4,5 epicoele of one-level valve gap and one-level adjusting nut 4 are internally formed a length can be with
The pop-up 12, one-level of one-level spring is installed in the cavity of regulation, cavity from top to bottom successively and adjusts spring 13, one-level spring subiculum
14th, first stage piston compacting ring 15；14 lower end of one-level spring subiculum is a cone, its cone with 15 upper end of first stage piston compacting ring
Connected in star coordinates, and the pretightning force that one-level adjusts spring 13 is all acted on first stage piston compacting ring 15, first stage piston
The lower end of compacting ring 15 is valve assembly 16, and valve assembly 16 is connected piston 22 with throttling valve core 24 with two hex nuts 21
Integral, the connecting portion between piston 22 and throttling valve core 24 leans on O-ring back-up ring 23 and seal with O ring；22 lower end of piston has one
Individual boss, boss root drive a cannelure, damp circumferential weld and damping cavity with 5 lower end of one-level valve gap composition, in throttle valve seat 17
Portion is a cavity, and upper end is cylindrical to constitute a circular passage with body cavity, and the cylindrical radial direction in upper end has a circle circumference uniform distribution hole,
The hole is by circular passage and 17 connects with the internal cavities of throttle valve seat, referred to as outlet plenum；Two holes and outlet is opened in the middle part of one-level valve body 6
Chamber connects, and a hole is the pressure measurement interface of one-level pressure relief valve 1, and another hole is the outlet of one-level pressure relief valve 1；Under throttle valve seat 17
The seal boss at end and the adjustable throttling circumferential weld of one aperture of formation of throttling valve core 24,17 lower end of throttle valve seat and one-level valve body 6
The cavity of composition is referred to as entrance cavity.
7 inner chamber of secondary valve body installs valve assembly 16 and throttle valve seat 17, and lower end connects secondary valve lid 8, under secondary valve lid 8
Two grades of regulation blind nuts 9 of end connection, two grades adjust 9 lower end of blind nut connection locking nut 10 and two grades of adjusting screws 11；Secondary valve lid 8
Blind nut 9 is adjusted with two grades and is internally formed in a cavity, cavity from top to bottom 18, two grades of tune of installation second piston compacting ring successively
Section spring 19, two-level spring supports 20, and the upper end of second piston compacting ring 18 is valve assembly 16, and valve assembly 16 is subtracted with one-level
The valve assembly 16 of pressure valve 1 is identical；There is a boss 22 lower end of piston, and boss root drives a cannelure, with 8 shape of secondary valve lid
Into damping circumferential weld and damping cavity, throttle valve seat 17 is identical with 1 throttle valve seat of one-level pressure relief valve, opens two holes in the middle part of secondary valve body 7
Connect with outlet plenum, a hole is the pressure measurement interface of second depressurized valve 3, and another hole is the outlet of second depressurized valve 3.
One-level adjusting nut 4 is adjusted, one-level is adjusted after spring 13 compresses and is produced downward initial tension of spring, spring pre-tightening
Power passes to first stage piston compacting ring 15 by one-level spring subiculum 14, promotes the valve assembly 16 of one-level pressure relief valve 1 to transport downwards
Dynamic, 1 valve of one-level pressure relief valve is opened, gases at high pressure throttled by valve after reduced pressure to medium pressure gas；Medium pressure gas are flowed into
1 throttle valve seat of one-level pressure relief valve, 17 upper end is divided into two-way：The damping circumferential weld that one route one-step valve lid 5 is formed with valve assembly 16 enters
Enter the damping cavity of 16 lower end of valve assembly, now the medium thrust upwards of valve assembly 16 and one-level adjust the pretightning force of spring 13
Dynamic equilibrium is formed, medium pressure gas obtain voltage stabilizing；Another route restricting orifice 2 flows into the entrance cavity of second depressurized valve 3；
Two grades of adjusting screws 11 are adjusted, makes two grades to adjust the initial tension of spring for producing after spring 19 compresses upwards, spring is pre-
Clamp force promotes the valve assembly 16 of second depressurized valve 3 to move upwards by second piston compacting ring 18, and 3 valve of second depressurized valve is beaten
Open, medium pressure gas by valve throttling after reduced pressure to low-pressure gas；Low-pressure gas flows into 3 throttle valve seat 17 of second depressurized valve
Lower end is divided into two-way：The damping circumferential weld that one route secondary valve lid 8 is formed with valve assembly 16 enters the resistance of 16 upper end of valve assembly
Buddhist nun chamber, now the pretightning forces formation dynamic equilibrium of the downward medium thrust of valve assembly 16 and two grades of regulation springs 19, low pressure gas
Body obtains voltage stabilizing；The outlet of another route second depressurized valve 3 is flowed out, and system obtains stable low-pressure gas.
In the diagram：Each one in one-level pressure relief valve 1 with second depressurized valve 3, it is with two hexagonal spiral shells to valve assembly 16
Piston 20 is connected by female 21 with throttling valve core 22；Middle O-ring back-up ring 21 is located at seal with O ring piston 22 and choke valve
Connecting portion between core 24；There is a boss 22 lower end of piston, and boss root drives a cannelure, and its effect is and one-level valve gap
5th, secondary valve lid 8 forms damping circumferential weld and damping cavity；Sealing surface in the middle of throttling valve core 24 is embedded in nonmetallic materials, and its effect is
Reduce seal pressure.
Claims (4)
1. a kind of secondary gas air relief valve, it is characterised in that by two reducer units into, left side one-level pressure relief valve formal dress, right side
Second depressurized valve is counter to be filled, and the entrance of second depressurized valve is connected with the outlet of one-level pressure relief valve, and middle setting has restricting orifice.
2. a kind of secondary gas air relief valve according to claim 1, it is characterised in that one-level body cavity installs valve group
Part and throttle valve seat, upper end connection one-level valve gap, connection one-level adjusting nut in end on one-step valve lid, one-step valve cover chamber and one-level
Adjusting nut is internally formed the cavity that a length can be adjusted, installed successively in cavity from top to bottom one-level spring pop-up, one
Level adjusts spring, one-level spring subiculum, first stage piston compacting ring；One-level spring subiculum lower end is a cone, and it is lived with one-level
The conical socket of plug compacting ring upper end coordinates, and allows the pretightning force that one-level adjusts spring all to act on first stage piston compacting ring
On, the lower end of first stage piston compacting ring is valve assembly, and valve assembly is connected piston with throttling valve core with two hex nuts
Integral, the connecting portion between piston and throttling valve core leans on O-ring back-up ring and seal with O ring；Piston has a boss, convex
Platform root drives a cannelure, with one-level valve gap lower end composition damping circumferential weld and damping cavity, is a cavity inside throttle valve seat,
Upper end is cylindrical to constitute a circular passage with body cavity, and the cylindrical radial direction in upper end has a circle circumference uniform distribution hole, and the hole is logical by annular
Road and throttle valve seat connects with the internal cavities, referred to as outlet plenum；Open two holes to connect with outlet plenum in the middle part of one-level valve body, a hole is
The pressure measurement interface of one-level pressure relief valve, another hole are the outlets of one-level pressure relief valve；The seal boss of throttle valve seat lower end and throttling
The adjustable throttling circumferential weld of valve element one aperture of formation, throttle valve seat lower end is referred to as entrance cavity with the cavity of one-level valve body composition.
3. a kind of secondary gas air relief valve according to claim 1, it is characterised in that secondary valve intracoelomic cavity installs valve group
Part and throttle valve seat, lower end connection secondary valve lid, secondary valve lid lower end connect two grades of regulation blind nuts, and two grades adjust blind nut lower end and connect
Connect locking nut and two grades of adjusting screws；Secondary valve lid and two grades adjust blind nuts and are internally formed in a cavity, cavity from upper past
Under install successively second piston compacting ring, two grades adjust spring, two-level springs support, the upper end of second piston compacting ring is valve
Component, valve assembly are identical with the valve assembly of one-level pressure relief valve；Piston has a boss, boss root open one it is annular
Groove, with secondary valve cap-shaped into damping circumferential weld and damping cavity, throttle valve seat is identical with one-level pressure relief valve throttle valve seat, in secondary valve body
Portion is opened two holes and is connected with outlet plenum, and a hole is the pressure measurement interface of second depressurized valve, and another hole is going out for second depressurized valve
Mouthful.
4. a kind of secondary gas air relief valve according to claim 1, it is characterised in that valve assembly（16）Reduce pressure in one-level
Valve（1）With second depressurized valve（3）In each one, it is with two hex nuts（21）By piston（22）With throttling valve core（24）Even
It is integral；Middle O-ring back-up ring（23）Positioned at the piston of seal with O ring（22）With throttling valve core（24）Between connecting portion；
Piston（22）There is a boss lower end, and boss root drives a cannelure, and its effect is and one-level valve gap（5）, secondary valve lid（8）
Form damping circumferential weld and damping cavity；Throttling valve core（24）The embedded nonmetallic materials of middle sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620986507.3U CN206036326U (en) | 2016-08-31 | 2016-08-31 | Second grade gas pressure reduction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620986507.3U CN206036326U (en) | 2016-08-31 | 2016-08-31 | Second grade gas pressure reduction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206036326U true CN206036326U (en) | 2017-03-22 |
Family
ID=58302367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620986507.3U Expired - Fee Related CN206036326U (en) | 2016-08-31 | 2016-08-31 | Second grade gas pressure reduction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206036326U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090363A (en) * | 2016-08-31 | 2016-11-09 | 常德翔宇设备制造有限公司 | Two-stage gas pressure reducing valve |
| CN108087602A (en) * | 2017-12-15 | 2018-05-29 | 上海瀚氢动力科技有限公司 | A kind of integrated pressure reducing valve |
| CN109723695A (en) * | 2019-03-08 | 2019-05-07 | 广东南曦液压机械有限公司 | A kind of extra-high pressure unloading valve |
| CN113685593A (en) * | 2021-08-20 | 2021-11-23 | 沈阳航天新光集团有限公司 | Gas explosion type pressure reducing module |
-
2016
- 2016-08-31 CN CN201620986507.3U patent/CN206036326U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090363A (en) * | 2016-08-31 | 2016-11-09 | 常德翔宇设备制造有限公司 | Two-stage gas pressure reducing valve |
| CN108087602A (en) * | 2017-12-15 | 2018-05-29 | 上海瀚氢动力科技有限公司 | A kind of integrated pressure reducing valve |
| CN109723695A (en) * | 2019-03-08 | 2019-05-07 | 广东南曦液压机械有限公司 | A kind of extra-high pressure unloading valve |
| CN109723695B (en) * | 2019-03-08 | 2023-10-20 | 广东南曦液压机械有限公司 | Ultrahigh pressure unloading valve |
| CN113685593A (en) * | 2021-08-20 | 2021-11-23 | 沈阳航天新光集团有限公司 | Gas explosion type pressure reducing module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20200831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |