CN204025798U - A kind of fuel gas pipeline Safety relief valve - Google Patents
A kind of fuel gas pipeline Safety relief valve Download PDFInfo
- Publication number
- CN204025798U CN204025798U CN201420346747.8U CN201420346747U CN204025798U CN 204025798 U CN204025798 U CN 204025798U CN 201420346747 U CN201420346747 U CN 201420346747U CN 204025798 U CN204025798 U CN 204025798U
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- valve
- adjusting screw
- valve body
- diaphragm
- pressure
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Abstract
The utility model discloses a kind of fuel gas pipeline Safety relief valve, comprise valve body, valve gap, diaphragm, force bearing disk, stifle, spring, tension adjusting screw; Valve body is bowl-like member, and bead place is flange, and sidewall has suction port, and inner chamber has cylindrical structure, and cylindrical wall and film contact place are valve port, endoporus connection valve intracoelomic cavity and outlet; Valve gap one end is flange, and the other end is tapped hole; Flexible diaphragm is installed between valve body and valve gap; On diaphragm, spiral-lock has force bearing disk; Spring-force driven dual, on force bearing disk, can be regulated by tension adjusting screw; Stifle can prevent foreign matter from entering.During use, suction port connects protected pipeline, and outlet communicates with air; When the pressure of protected pipeline exceed default diffuse pressure time, diffusion valve is opened, pipeline pressure release; When the pressure drop in protected pipeline is to when diffusing pressure, diffusion valve is closed.The utility model structure is simple, and installation, maintenance is convenient, and it is high to diffuse precision; Through actual test, diffuse precision be better than ± 3%.
Description
Technical field
The utility model belongs to gas transmission and distribution technical field, is specifically related to a kind of fuel gas pipeline Safety relief valve.
Background technique
In the transmission & distribution process of pipeline gas, when the downstream no user use combustion gas of pressure governor, then pressure governor can cut out automatically, and making by the gas flow of pressure governor is zero, and now, the downstream pipe of pressure governor is in air-tight state; Under this sealing state, if there is rising in the ambient temperature around downstream pipe or pressure governor leaks between upstream and downstream, then the pressure of downstream pipe can constantly raise, thus the safety of the gas equipment on downstream pipe is on the hazard, for this reason, need after pressure increase to certain value, to carry out automatic relief to the combustion gas of downstream pipe, to maintain the pressure of downstream pipe within safety range.
Summary of the invention
For above-mentioned situation, the purpose of this utility model is to provide simple, with low cost, the sensitive fuel gas pipeline Safety relief valve of a kind of structure.
For achieving the above object, the utility model by the following technical solutions:
A kind of fuel gas pipeline Safety relief valve, it comprises valve body, valve gap, diaphragm, force bearing disk, stifle, spring, tension adjusting screw; Described valve body is circular bowl structure, its bead place is flange arrangement, within it there is a cylindrical structure bottom in chamber along shaft axis, one end by body cavity on cylindrical wall is shaped with valve mouth structure, it is a through hole in cylinder, its one end is connected with body cavity, and the other end is connected with the external world as outlet; The sidewall of valve body is provided with suction port; One end of described valve gap is disc-shaped structure, and its bead place is the flange arrangement matched with valve body, and its other end is interior threaded hole structure, and disk and interior threaded hole structure on the same axis, the sidewall of interior threaded hole are shaped with the spiracle of a ventilation; Described diaphragm is flexible disc-shaped component, is installed between valve body and the flange of valve gap; Side spiral-lock relative with valve port on diaphragm has a circular force bearing disk, makes diaphragm between force bearing disk and valve port; Being connected firmly and sealing between force bearing disk and diaphragm; Apply a suitable active force at the center of force bearing disk to valve port direction and just can cut off runner between diaphragm and valve port, thus make the inner chamber chamber of valve body be in air-tight state; Outside thread on described tension adjusting screw and the internal thread on valve gap match, and are installed on valve gap, and rotary pressure adjusting screw can make it move up and down on valve gap; Tension adjusting screw is provided with location hole of the spring towards the side of force bearing disk, spring by location and installation between tension adjusting screw and force bearing disk; Rotary pressure adjusting screw can the decrement of Regulation spring, thus the size of Regulation spring power; Tapped hole port outside valve gap is provided with a stifle in case foreign matter enters.
The working principle of diffusion valve is: when body cavity does not have hydrodynamic pressure, the spring between tension adjusting screw and force bearing disk produce spring-force driven dual on force bearing disk, diaphragm is pushed to valve port, makes diaphragm be close to valve port; When body cavity has certain hydrodynamic pressure time, the fluid force that this fluid pressure action produces on diaphragm, makes diaphragm have the trend departing from valve port; Under the acting in conjunction of spring force and fluid force, between diaphragm and valve port, produce a sealing force; The spring force of diffusion valve is once set up, and the size of sealing force just depends on and the size of fluid force namely depends on the hydrodynamic pressure of body cavity: the hydrodynamic pressure of body cavity is larger, sealing force is less, otherwise the hydrodynamic pressure of body cavity is less, and sealing force is larger; When the hydrodynamic pressure of body cavity is less, when sealing force is greater than the minimum sealing force that can keep valve port sealing state, diffusion valve is just in closed condition; When the hydrodynamic pressure of body cavity rises gradually, fluid force can become large gradually, and sealing force will reduce gradually, and when sealing force is less than the minimum sealing force that can keep valve port sealing state, diffusion valve is just opened; Along with the unlatching of diffusion valve, the fluid just outwards discharge of body cavity; Along with fluid constantly outwards discharges, the hydrodynamic pressure of body cavity declines gradually, and the sealing force between diaphragm and valve port increases gradually, and when sealing force increases to more than the minimum sealing force that can keep valve port sealing state again, diffusion valve is just closed again; Make diffusion valve start open fluid pressure value be exactly diffusion valve diffuse pressure; The size of Regulation spring power just can regulate the size of diffusing force value.
During actual use, suction port connects protected pipeline, and outlet connects specifically diffuses pipeline or is directly connected with air, rotary pressure adjusting screw, and what make diffusion valve diffuses the safety margins pressure that pressure is protected pipeline; Time more than the pressure increase in protected pipeline to safety margins pressure, diffusion valve is just opened, fluid in protected pipeline just by the runner between valve port and diaphragm to specifically diffusing pipeline or directly to airborne release, make the pressure drop in protected pipeline, reach the object of safety protection; Time below the pressure drop in protected pipeline to safety margins pressure, diffusion valve is just closed automatically.
The utility model beneficial effect is: structure is simple, and processing, installation, maintenance are convenient, and it is high most importantly to diffuse precision; Through actual use test, diffuse precision be better than ± 3%.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation
In figure, 1-valve body, 2-valve gap, 3-diaphragm, 4-force bearing disk, 5-stifle, 6-spring, 7-tension adjusting screw.
Embodiment
Composition graphs 1 is described as follows embodiment of the present utility model:
A kind of fuel gas pipeline Safety relief valve, it comprises valve body 1, valve gap 2, diaphragm 3, force bearing disk 4, stifle 5, spring 6, tension adjusting screw 7; Described valve body 1 is circular bowl structure, its bead place is flange arrangement, within it there is a cylindrical structure bottom in chamber along shaft axis, one end by valve body 1 inner chamber on cylindrical wall is shaped with valve mouth structure, it is a through hole in cylinder, its one end and valve body 1 intracavity inter-connection, the other end is connected with the external world as outlet; One end of described valve gap 2 is disc-shaped structure, and its bead place is the flange arrangement matched with valve body 1, and its other end is interior threaded hole structure, and disk and interior threaded hole structure on the same axis, the sidewall of interior threaded hole are shaped with the spiracle of a ventilation; Described diaphragm 3 is flexible disc-shaped components, between the flange being installed in valve body 1 and valve gap 2; Side spiral-lock relative with valve port on diaphragm 3 has a circular force bearing disk 4, being connected firmly and sealing between force bearing disk 4 and diaphragm 3; Apply a suitable active force at the center of force bearing disk 4 to valve port direction and just can cut off runner between diaphragm 3 and valve port, thus make the inner chamber of valve body 1 be in air-tight state; Outside thread on described tension adjusting screw 7 and the internal thread on valve gap 2 match, and are installed on valve gap 2, and rotary pressure adjusting screw 7 can make it move up and down on valve gap 2; Tension adjusting screw 7 is provided with location hole of the spring towards the side of force bearing disk, spring 6 by location and installation between tension adjusting screw 7 and force bearing disk 4; Rotary pressure adjusting screw 7 can the decrement of Regulation spring 6, thus the size of Regulation spring power T; Tapped hole port outside valve gap 2 is provided with a stifle 5 in case foreign matter enters.
The working principle of diffusion valve is: when the inner chamber of valve body 1 does not have hydrodynamic pressure, the spring 6 between tension adjusting screw 7 and force bearing disk 4 produce spring force T act on force bearing disk 4, diaphragm 3 is pushed to valve port, makes diaphragm 3 be close to valve port; When diffusion valve inner chamber has certain hydrodynamic pressure time, the fluid force F that this fluid pressure action produces on diaphragm, makes diaphragm 3 have the trend departing from valve port; Under the acting in conjunction of spring force T and fluid force F, produce a sealing force between diaphragm 3 and valve port, its size is T-F; The spring force T of diffusion valve is once set up, and the size of sealing force just depends on and the size of fluid force F namely depends on the hydrodynamic pressure of valve body 1 inner chamber: the hydrodynamic pressure of valve body 1 inner chamber is larger, sealing force is less, otherwise the hydrodynamic pressure of valve body 1 inner chamber is less, and sealing force is larger; When the hydrodynamic pressure of valve body 1 inner chamber is less, when sealing force is greater than the minimum sealing force that can keep valve port sealing state, diffusion valve is just in closed condition; When the hydrodynamic pressure of valve body 1 inner chamber rises gradually, fluid force F can become large gradually, and sealing force will reduce gradually, and when sealing force is less than the minimum sealing force that can keep valve port sealing state, diffusion valve is just opened; Along with the unlatching of diffusion valve, the fluid just outwards discharge of valve body 1 inner chamber; Along with fluid constantly outwards discharges, the hydrodynamic pressure of valve body 1 inner chamber declines gradually, and the sealing force between diaphragm 3 and valve port increases gradually, and when sealing force increases to more than the minimum sealing force that can keep valve port sealing state again, diffusion valve is just closed again; Make diffusion valve start open fluid pressure value be exactly diffusion valve diffuse pressure; The size of Regulation spring power T just can regulate the size of diffusing force value.
During actual use, suction port connects protected pipeline, and outlet connects specifically diffuses pipeline or is directly connected with air, rotary pressure adjusting screw 7, and what make diffusion valve diffuses the safety margins pressure that pressure is protected pipeline; Time more than the pressure increase in protected pipeline to safety margins pressure, diffusion valve is just opened, fluid in protected pipeline just by valve port to specifically diffusing pipeline or directly to airborne release, making the pressure drop in protected pipeline, reach the object of safety protection; Time below the pressure drop in protected pipeline to safety margins pressure, diffusion valve is just closed automatically.
Claims (4)
1. a fuel gas pipeline Safety relief valve, it comprises valve body (1), valve gap (2), diaphragm (3), force bearing disk (4), stifle (5), spring (6), tension adjusting screw (7); It is characterized in that valve body (1) is for circular bowl structure, its bead place is flange arrangement, within it there is a cylindrical structure bottom in chamber along shaft axis, one end by valve body (1) inner chamber on cylindrical wall is shaped with valve mouth structure, it is a through hole in cylinder, its one end and valve body (1) intracavity inter-connection, the other end is connected with the external world as outlet; The sidewall of valve body (1) is provided with suction port; One end of valve gap (2) is disc-shaped structure, its bead place is the flange arrangement matched with valve body (1), its the other end is interior threaded hole structure, and disk and interior threaded hole structure on the same axis, the sidewall of interior threaded hole are shaped with the spiracle of a ventilation; Diaphragm (3) is flexible disc-shaped component, between the flange being installed in valve body (1) and valve gap (2); A circular force bearing disk (4) is had in the upper side spiral-lock relative with valve port of diaphragm (3).
2. the fuel gas pipeline Safety relief valve according to claims 1, it is characterized in that tension adjusting screw (7) is arranged on valve gap (2) by the outside thread matched with the internal thread on valve gap (2) on it, turning adjusting screw (7) can make it move up and down on valve gap (2); The center of tension adjusting screw (7) is being provided with a location hole of the spring towards the orientation of force bearing disk (4).
3. the fuel gas pipeline Safety relief valve according to claims 1 or 2, is characterized in that spring (6) by the positioning hole location and installation on tension adjusting screw (7) between tension adjusting screw (7) and force bearing disk (4).
4. the fuel gas pipeline Safety relief valve according to claims 1 or 2, is characterized in that the tapped hole port outside valve gap being provided with a stifle (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420346747.8U CN204025798U (en) | 2014-06-18 | 2014-06-18 | A kind of fuel gas pipeline Safety relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420346747.8U CN204025798U (en) | 2014-06-18 | 2014-06-18 | A kind of fuel gas pipeline Safety relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204025798U true CN204025798U (en) | 2014-12-17 |
Family
ID=52065665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420346747.8U Expired - Fee Related CN204025798U (en) | 2014-06-18 | 2014-06-18 | A kind of fuel gas pipeline Safety relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204025798U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850239A (en) * | 2015-07-03 | 2018-03-27 | 杜尔系统股份公司 | Needle-valve |
-
2014
- 2014-06-18 CN CN201420346747.8U patent/CN204025798U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850239A (en) * | 2015-07-03 | 2018-03-27 | 杜尔系统股份公司 | Needle-valve |
| US10870117B2 (en) | 2015-07-03 | 2020-12-22 | Dürr Systems Ag | Needle valve |
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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: 20141217 Termination date: 20180618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |