CN205371732U - A relief valve for low pressure gas piping - Google Patents
A relief valve for low pressure gas piping Download PDFInfo
- Publication number
- CN205371732U CN205371732U CN201620027181.1U CN201620027181U CN205371732U CN 205371732 U CN205371732 U CN 205371732U CN 201620027181 U CN201620027181 U CN 201620027181U CN 205371732 U CN205371732 U CN 205371732U
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- Prior art keywords
- valve
- pressure
- medium inlet
- connecting rod
- relief valve
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- Expired - Fee Related
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Abstract
The utility model provides a relief valve for low pressure gas piping, includes valve gap, safety cover, adjusting screw, regulation pole, gland, combined seal ring, sealing washer, spring, valve body, valve plate, medium inlet, medium export, axle sleeve and connecting axle, it passes through the spring and is connected with the connecting axle on valve plate upper portion to adjust the pole lower part, the medium inlet sets up in the valve body bottom, the medium export sets up on the valve body right side, the valve plate is connected with the connecting rod, the connecting rod lower part is provided with fixed plate and fly leaf, the fly leaf articulates the tip at the connecting rod, be provided with torque spring between fly leaf and the connecting rod, the medium inlet is inside to be linked together through the intercommunicating pore with the medium export. The utility model discloses a two -stage pressure release when pressure exceedes one -level pressure, starts the one -level pressure release to report to the police, convenient timely adjust pressure when pressure exceedes second grade pressure, starts the second grade pressure release, quick pressure release, and pressure control is more accurate, reacts sensitiveer.
Description
Technical field
This utility model belongs to relief valve, is specially a kind of relief valve for low-pressure gas pipeline.
Background technology
Relief valve has another name called relief valve, the operating pressure energy automatic open close according to system, is generally mounted on the equipment of closed system or pipeline protection security of system.When equipment or manifold pressure exceed relief valve setting pressure, namely automatically turn on pressure release, it is ensured that equipment and pipeline internal medium pressure, under setting pressure, protect equipment and pipeline, it is prevented that occur unexpected.
Pressure-relief valve structure mainly has two big classes: spring and lever.Spring refers to the sealing active force by spring of flap and valve seat.Lever is the active force by lever and weight.Along with jumbo needs, there is again a kind of pulsed relief valve, also referred to as pilot operated pressure relief valve, be made up of main relief valve and auxiliary valve.When pipeline internal medium pressure exceedes authorized pressure value, auxiliary valve is first opened, and medium enters main relief valve along conduit, and is opened by main relief valve, makes the pressure medium increased reduce.
There is the steel production enterprise of nearly 2000 in China, a lot of medium-sized and small enterprises are realized relatively thin in safety in production, a lot of gas pipings is fitted without " low-pressure gas relief valve ", or it is mounted with the valve diffused, but this valve is high pressure valve, the effect not acting on low pressure pipeline or playing is relatively small.So " low-pressure gas relief valve " consumption is very huge, market prospect is very considerable.
Current low-pressure gas diffusion valve is the main executive component in pipe-work system; metallurgy industry be used primarily in fire dust, iron and steel, petrochemical industry; on electric power, environmental protection, hot blast stove system, grain processing, gas medium pipeline or device; pipeline or apparatus are shielded and is used widely in industry; relief valve is a kind of safety early warning device that flammable explosion hazard gases carried by pipeline; when certain temporary transient reason makes the pressure at control point exceed setting value, namely discharge the valve of a certain amount of gas.Realize safety, quantity-produced ideal equipment.
At present, in disclosed patent documentation, patent publication No.: CN2714918Y, disclose a kind of Spring-Loaded Pressure Relief Valve, but this Spring-Loaded Pressure Relief Valve is suitable for poor effect on the low-pressure gas pipeline of level design.
Utility model content
The purpose of this utility model is in that to provide a kind of relief valve for low-pressure gas pipeline, solves the problem in background technology.
This utility model realizes by the following technical solutions:
nullA kind of relief valve for low-pressure gas pipeline，Including valve gap、Protective cover、Regulate screw、Adjusting rod、Gland、Combined seal ring、Sealing ring、Spring、Valve body、Valve plate、Medium inlet、Media outlet、Axle sleeve and connection axle，Connecting rod、Fixing plate、Portable plate，Torque spring、Intercommunicating pore and seal receptacle，Described medium inlet is arranged on body base，Described media outlet is arranged on the right side of valve body，Described valve gap is bolted on the top of valve body，Described bonnet lower is provided with axle sleeve，The contact surface of described valve gap and valve body is provided with sealing ring，Described protective cover is bolted on valve gap，Described protective cover is internally provided with adjusting rod，Described adjusting rod is stuck in axle sleeve by gland，It is provided with combined seal ring between described gland and axle sleeve，Described adjusting rod top is provided with adjustment screw，Described adjusting rod bottom is connected by the connection axle of spring with valve plate top，The sealing surface place of described valve plate bottom surface and medium inlet is provided with sealing ring，Described medium inlet and media outlet are 90 ° of angles，The cross section of described sealing ring is trapezoidal，Described connection axle and axle sleeve fit tightly，Described medium inlet arranged outside has bolt hole，Described media outlet arranged outside has bolt hole，The internal diameter of described medium inlet and media outlet is equal，Described valve plate is connected to connecting rod，Described connecting rod bottom is provided with fixing plate and portable plate，Described portable plate is hinged on the end of connecting rod，It is provided with torque spring between described portable plate and connecting rod，Described medium inlet is internal to be connected by intercommunicating pore with media outlet.
In this utility model, the upper side of described torque spring one end and portable plate compresses, and the left surface of the other end and connecting rod compresses.
In this utility model, in the middle part of described medium inlet, it is provided with seal receptacle.
In this utility model, described fixing plate end and seal receptacle closely cooperate, and described portable plate end and seal receptacle closely cooperate.
In this utility model, described fixing plate and portable plate end are trapezoidal.
In this utility model, described portable plate top is provided with gas leak detector.
Beneficial effect: this utility model adopts two-stage pressure release, when pressure exceedes first class pressure, starts one-level pressure release, and reports to the police, conveniently regulate pressure in time, when pressure exceedes secondary pressure, starts two grades of pressure releases, quick pressure releasing, and Stress control is more accurate, reacts sensitiveer.This utility model volume is little, light weight, with material economize, be active in one's movements, response speed is fast, discharge precision height, compact conformation, easy for installation, simple operation, usage safety performance height；This utility model integrates control and command, safety automation diffuses；This utility model energy band back pressure discharge, long working life, stable and reliable in work, can adjusting and measuring on line；This utility model remains to after repeatedly opening jumping automatically return seat, close full discharge tight, isometrical；This utility model is not necessary to dismounting and grinds spool valve seat；This utility model, when medium contains the corrosive substance such as sulfur, benzene, can be selected for corrosion resistant material；This utility model Applicable media is natural gas, artificial coal gas, liquefied petroleum gas, air etc.；This utility model is applicable to urban gate station, region voltage regulating station, industrial and civilian all types of user.This utility model adopts angle type valve structure, has an advantage in that, can meet and be applicable to horizontal gas piping；Simple in construction: angle type valve is that lower water inlet is cleared, and horizontal direction can also connect other device；Installing space is little: due to angie type structure, and its valve installation dimension meets standard GB/T/T12221-2005 standard；Without exposing part: being thought of as its working environment during this utility model design is outdoor installation, therefore when design without exposing part, to ensure the overall performance of valve.This utility model adopts soft sealing structure, and sealing ring is arranged on valve stamen.Sealing pair is rubber sealing and rustless steel valve seat, owing to sealing ring is arranged on valve stamen, it is simple to changing sealing ring, this utility model is soft sealing structure form, and its seal request meets GB/T13927-2008 standard A level requirement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is partial structurtes schematic diagram of the present utility model.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with being specifically illustrating, this utility model is expanded on further.
nullReferring to Fig. 1，A kind of structural representation of the relief valve for low-pressure gas pipeline，A kind of relief valve for low-pressure gas pipeline，Including valve gap 1、Protective cover 2、Regulate screw 3、Adjusting rod 4、Gland 5、Combined seal ring 6、Sealing ring 7、Spring 8、Valve body 9、Valve plate 10、Medium inlet 11、Media outlet 12、Axle sleeve 13 and connection axle 14，Connecting rod 15、Fixing plate 16、Portable plate 17，Torque spring 18、Intercommunicating pore 19 and seal receptacle 20，Described medium inlet 11 is arranged on bottom valve body 9，Described media outlet 12 is arranged on the right side of valve body 9，Described valve gap 1 is bolted on the top of valve body 9，Described valve gap 1 bottom is provided with axle sleeve 13，The contact surface of described valve gap 1 and valve body 9 is provided with sealing ring 7，Described protective cover 2 is bolted on valve gap 1，Described protective cover 2 is internally provided with adjusting rod 4，Described adjusting rod 4 is stuck in axle sleeve 13 by gland 5，It is provided with combined seal ring 6 between described gland 5 and axle sleeve 13，Described adjusting rod 4 top is provided with adjustment screw 3，Described adjusting rod 4 bottom is connected by the connection axle 14 of spring 8 with valve plate 10 top，The sealing surface place of described valve plate 10 bottom surface and medium inlet 11 is provided with sealing ring 7，Described medium inlet 11 and media outlet 12 are in 90 ° of angles，The cross section of described sealing ring 7 is trapezoidal，Described connection axle 14 fits tightly with axle sleeve 13，Described medium inlet 11 arranged outside has bolt hole，Described media outlet 12 arranged outside has bolt hole，The internal diameter of described medium inlet 11 and media outlet 12 is equal，Described valve plate 10 is connected to connecting rod 15，Described connecting rod 15 bottom is provided with fixing plate 16 and portable plate 17，Described portable plate 17 is hinged on the end of connecting rod 15，It is provided with torque spring 18 between described portable plate 17 and connecting rod 15.
Referring to Fig. 2, a kind of partial structurtes schematic diagram of the relief valve for low-pressure gas pipeline, the upper side of described torque spring 18 one end and portable plate 17 compresses, the left surface of the other end and connecting rod 15 compresses, it is provided with seal receptacle 20 in the middle part of described medium inlet 11, described fixing plate 16 end and seal receptacle 20 closely cooperate, described portable plate 17 end and seal receptacle 20 closely cooperate, described fixing plate 16 and portable plate 17 end are trapezoidal, described medium inlet 11 is internal to be connected by intercommunicating pore 19 with media outlet 12, described portable plate 17 top is provided with gas leak detector 21.
Embodiment 1
This utility model is welding pattern valve, during preparation, flange, valve body 9, bracing frame weldering are integrated relatively, all sizes can carry out the processing of finished product after the measurement of specialty testing staff confirms, seal receptacle and the sealing supporting finished product of valve plate, the sealing ring of low-pressure gas relief valve can be changed, and needs dismounting valve gap 1, valve body 9 just can be replaced the sealing ring 7 of valve during replacing, and convenient disassembly, compact conformation, keying are flexible.The main application fields of this utility model valve is in metallurgy, coal gas, air, the dust fired, iron and steel, petrochemical industry, the application aspect of the industry pipelines such as electric power, environmental protection, hot blast stove system, grain processing, gas.
Embodiment 2
During use, do not prize sleeve pipe when installing valve group；Guarantee that pipeline is straight, internal free from admixture；Checking all pressure, whether the parameter such as temperature meets valve operation requirement；Not being arranged on unsteady basis by valve group relief valve should be arranged on the downstream of pressure regulator valve.Media outlet 12 and medium inlet 11 are welded on low-pressure gas pipeline respectively through flange and bracing frame, pressure requirements according to low-pressure gas pipeline, regulate the two ends thrust of torque spring 18, thus arranging the pressure of portable plate 17 and medium inlet 11, it is set as first class pressure, arrange and regulate screw 3 thus arranging the spring 8 being connected with adjusting rod 4, thus arranging the pressure of valve plate 10 and medium inlet 11, it is set to secondary pressure, when the medium in pipeline exceed first class pressure require time, first medium washes portable plate 17 open, enter in medium inlet 11, gas leak detector 21 detects coal gas, start and report to the police, conveniently regulate pipeline pressure in time.Then passing through intercommunicating pore 19 and enter into media outlet 12, and flow out from media outlet 12, when pressure is lower than the pressure set, portable plate 17 recloses medium inlet 11, thus reaching the purpose of one-level pressure release.When the medium in pipeline exceed secondary pressure require time, the while that medium being by fixing plate 16 and portable plate 17 upwardly, connecting rod 15 moves upward, wash valve plate 10 open, it is internal that medium enters valve body 9, and flows out from media outlet 12, when pressure is lower than the secondary pressure set, valve plate 10 comes back to closed state, thus reaching the purpose of pressure release.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described; skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope; this utility model also has various changes and modifications; these changes and improvements both fall within the scope of claimed this utility model, and this utility model claims scope and defined by appending claims and equivalent thereof.
Claims (6)
- null1. the relief valve for low-pressure gas pipeline，Including valve gap、Protective cover、Regulate screw、Adjusting rod、Gland、Combined seal ring、Sealing ring、Spring、Valve body、Valve plate、Medium inlet、Media outlet、Axle sleeve and connection axle，Connecting rod、Fixing plate、Portable plate，Torque spring、Intercommunicating pore and seal receptacle，Described medium inlet is arranged on body base，Described media outlet is arranged on the right side of valve body，Described valve gap is bolted on the top of valve body，Described bonnet lower is provided with axle sleeve，The contact surface of described valve gap and valve body is provided with sealing ring，Described protective cover is bolted on valve gap，Described protective cover is internally provided with adjusting rod，Described adjusting rod is stuck in axle sleeve by gland，It is provided with combined seal ring between described gland and axle sleeve，Described adjusting rod top is provided with adjustment screw，Described adjusting rod bottom is connected by the connection axle of spring with valve plate top，The sealing surface place of described valve plate bottom surface and medium inlet is provided with sealing ring，Described medium inlet and media outlet are 90 ° of angles，The cross section of described sealing ring is trapezoidal，Described connection axle and axle sleeve fit tightly，Described medium inlet arranged outside has bolt hole，Described media outlet arranged outside has bolt hole，The internal diameter of described medium inlet and media outlet is equal，It is characterized in that，Described valve plate is connected to connecting rod，Described connecting rod bottom is provided with fixing plate and portable plate，Described portable plate is hinged on the end of connecting rod，It is provided with torque spring between described portable plate and connecting rod，Described medium inlet is internal to be connected by intercommunicating pore with media outlet.
- 2. a kind of relief valve for low-pressure gas pipeline according to claim 1, it is characterised in that the upper side of described torque spring one end and portable plate compresses, the left surface of the other end and connecting rod compresses.
- 3. a kind of relief valve for low-pressure gas pipeline according to claim 1, it is characterised in that be provided with seal receptacle in the middle part of described medium inlet.
- 4. a kind of relief valve for low-pressure gas pipeline according to claim 1, it is characterised in that described fixing plate end and seal receptacle closely cooperate, described portable plate end and seal receptacle closely cooperate.
- 5. a kind of relief valve for low-pressure gas pipeline according to claim 1, it is characterised in that described fixing plate and portable plate end are trapezoidal.
- 6. a kind of relief valve for low-pressure gas pipeline according to claim 1, it is characterised in that described portable plate top is provided with gas leak detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620027181.1U CN205371732U (en) | 2016-01-13 | 2016-01-13 | A relief valve for low pressure gas piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620027181.1U CN205371732U (en) | 2016-01-13 | 2016-01-13 | A relief valve for low pressure gas piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205371732U true CN205371732U (en) | 2016-07-06 |
Family
ID=56276793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620027181.1U Expired - Fee Related CN205371732U (en) | 2016-01-13 | 2016-01-13 | A relief valve for low pressure gas piping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205371732U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119682A (en) * | 2016-11-29 | 2018-06-05 | 天津芩佳溢盛科技发展有限公司 | A kind of science and technology experimental gas auxiliary diffusion valve |
| CN110469702A (en) * | 2019-09-17 | 2019-11-19 | 天津祥嘉流体控制系统有限公司 | A kind of coal gas relief valve with doubly-linked rod structure |
| CN115199631A (en) * | 2022-07-26 | 2022-10-18 | 靖江市飞天紧固件制造有限公司 | Pressure relief type bolt structure |
| CN116792542A (en) * | 2022-05-27 | 2023-09-22 | 南通金百吉五金制造有限公司 | Adjustable pressure relief valve suitable for buffer tank |
-
2016
- 2016-01-13 CN CN201620027181.1U patent/CN205371732U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119682A (en) * | 2016-11-29 | 2018-06-05 | 天津芩佳溢盛科技发展有限公司 | A kind of science and technology experimental gas auxiliary diffusion valve |
| CN110469702A (en) * | 2019-09-17 | 2019-11-19 | 天津祥嘉流体控制系统有限公司 | A kind of coal gas relief valve with doubly-linked rod structure |
| CN116792542A (en) * | 2022-05-27 | 2023-09-22 | 南通金百吉五金制造有限公司 | Adjustable pressure relief valve suitable for buffer tank |
| CN115199631A (en) * | 2022-07-26 | 2022-10-18 | 靖江市飞天紧固件制造有限公司 | Pressure relief type bolt structure |
| CN115199631B (en) * | 2022-07-26 | 2023-09-19 | 靖江市飞天紧固件制造有限公司 | Pressure relief type bolt structure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20220113 |