CN205298707U - Safety blow -off valve for gas pipeline - Google Patents
Safety blow -off valve for gas pipeline Download PDFInfo
- Publication number
- CN205298707U CN205298707U CN201521025237.1U CN201521025237U CN205298707U CN 205298707 U CN205298707 U CN 205298707U CN 201521025237 U CN201521025237 U CN 201521025237U CN 205298707 U CN205298707 U CN 205298707U
- Authority
- CN
- China
- Prior art keywords
- threaded rod
- valve
- valve body
- hole
- slide bar
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a safety blow -off valve for gas pipeline, including valve body and valve gap, be provided with atmospheric pressure mouth and pressure release mouth on the valve body, the interior disc of the one end of atmospheric pressure mouth in the valve body is the taper surface, is equipped with in the atmospheric pressure mouth to seal the piece with the taper surface complex, the top of sealed piece is equipped with the threaded rod, and the valve body is stretched out to the threaded rod upper end, and is connected with the twist grip, threaded rod and bonnet thread cooperation, the threaded rod is followed axial direction and has been seted up the through -hole, but is equipped with the slide bar rather than sliding fit in the through -hole, the lower extreme and the sealed piece fixed connection of slide bar, the slide bar overcoat is equipped with the spring, and the one end of spring is connected with the lower terminal surface of threaded rod, and the other end is connected with the up end of sealed piece, be equipped with the screw rod in the through -hole of threaded rod, the threaded rod is stretched out to the upper end of screw rod, and is connected with the handle, the screw rod passes through screw -thread fit with the through -hole of threaded rod. This safety blow -off valve for gas pipeline simple structure can popularize and apply.
Description
Technical field
This utility model relates to valve field, in particular to a kind of fuel gas pipeline Safety relief valve.
Background technology
In the transmission & distribution process of pipe gas, when the downstream no user of pressure regulator uses combustion gas, then pressure regulator can be automatically switched off, and making by the gas flow of pressure regulator is zero, and now, the downstream pipe of pressure regulator is in air-tight state; Under this sealing state, if the ambient temperature around downstream pipe occurs rising or pressure regulator to leak between upstream and downstream, then the pressure of downstream pipe can constantly raise, so that the safety of the gas equipment on downstream pipe is on the hazard, for this, need, after pressure rises to certain value, the combustion gas of downstream pipe is carried out automatic relief, to maintain the pressure of downstream pipe within safety range.
The safe pressure of diffusion valve on the market is determined by spool deadweight at present, and after using a period of time, the spring within diffusion valve will deform so that the keying precision of diffusion valve reduces so that the stability of system and reliability reduce.
Utility model content
The purpose of this utility model is in that to provide a kind of fuel gas pipeline Safety relief valve, to solve the deficiencies in the prior art.
For realizing this utility model purpose, the technical scheme of employing is:
A kind of fuel gas pipeline Safety relief valve, including valve body and valve gap, valve body is provided with air pressure mouth and pressure relief opening, it is characterised in that the inner headed face of described air pressure mouth one end in valve body is taper surface, is provided with the sealing block coordinated with taper surface in air pressure mouth; Described sealing block be arranged over threaded rod, valve body is stretched out in threaded rod upper end, and is connected to rotary handle; Described threaded rod and valve gap threaded engagement; Described threaded rod in axial direction offers through hole, is provided with the slide bar slidably coordinated with it in through hole, and the lower end of slide bar is fixing with sealing block to be connected; Being arranged with spring outside described slide bar, one end of spring is connected with the lower surface of threaded rod, and the other end is connected with the upper surface of sealing block;Being provided with screw rod in the through hole of described threaded rod, threaded rod is stretched out in the upper end of screw rod, and is connected to hands handle; The through hole of described screw rod and threaded rod passes through threaded engagement.
Further, described sealing block is elastomeric material.
Further, described valve body and valve gap are bolted to connection, and facilitate it to dismantle.
The beneficial effects of the utility model are,
1, being led in threaded rod slip by slide bar, effectively avoid air pressure mouth pressure too high, there is flexural deformation when compression in spring, causes that the service life of spring reduces.
2, slide bar is had position-limiting action by the lower surface of screw rod, it is to avoid the pressure of air pressure mouth unexpected too high time, spring quickly shorten exceed spring self shorten maximum, cause that damaging occurs in paralysis.
3, sealing block and air pressure mouth are by cone match, and the spring of compression can make it closely cooperate, and in timely life-time service process, abrasion occurs in sealing block, can also realize automatic compensation under the thrust of spring. Thus improving stability and the reliability of diffusion valve.
4, by turning handle, make screw rod move up and down in threaded rod through hole, thus extending or shortening the distance between screw rod and slide bar, can meet when different size of spring is applied on this fuel gas pipeline Safety relief valve and spring is protected; By with the spring changed in diffusion valve, it is achieved diffusion valve is applied on the trachea of different air pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the fuel gas pipeline Safety relief valve that this utility model provides.
Detailed description of the invention
Below by specific embodiment son and in conjunction with accompanying drawing, this utility model is described in further detail.
The fuel gas pipeline Safety relief valve of this utility model offer that Fig. 1 is shown, including valve body 1, sealing block 2, spring 3, slide bar 4, valve gap 5, rotary handle 6, threaded rod 12, screw rod 7, bolt 8, pressure relief opening 9, handle 11 and air pressure mouth 10. Described valve body 1 is provided with air pressure mouth 10 and pressure relief opening 9; The inner headed face of described air pressure mouth 10 one end in valve body 1 is taper surface, is provided with the sealing block 2 coordinated with taper surface in air pressure mouth 10; Described sealing block 2 be arranged over threaded rod 12, valve body 1 is stretched out in threaded rod 12 upper end, and is connected to rotary handle 6; Described threaded rod 12 and valve gap 5 threaded engagement; Described threaded rod 12 in axial direction offers through hole, is provided with the slide bar 4 slidably coordinated with it in through hole, and the lower end of slide bar 4 is fixing with sealing block 2 to be connected; Being arranged with spring 3 outside described slide bar 4, one end of spring 3 is connected with the lower surface of threaded rod 12, and the other end is connected with the upper surface of sealing block 2; Being provided with screw rod 7 in the through hole of described threaded rod 12, threaded rod 12 is stretched out in the upper end of screw rod 7, and is connected to handle 11; The through hole of described screw rod 7 and threaded rod 12 passes through threaded engagement; Described sealing block 2 is elastomeric material; Described valve body 1 and valve gap 5 connect by bolt 8 is fixing, facilitate it to dismantle.
Being led in threaded rod 12 slip by slide bar 4, effectively avoid air pressure mouth pressure too high, there is flexural deformation when compression in spring 3, causes that the service life of spring 3 reduces.
Slide bar 4 is had position-limiting action by the lower surface of screw rod 7, it is to avoid the pressure of air pressure mouth 10 unexpected too high time, spring 3 quickly shorten exceed spring 3 self shorten maximum, cause that damaging occurs in paralysis.
Sealing block 2 and air pressure mouth 10 are by cone match, and the spring 3 of compression can make it closely cooperate, and in timely life-time service process, abrasion occurs in sealing block 2, can also realize automatic compensation under the thrust of spring 3.Thus improving stability and the reliability of diffusion valve.
By turning handle 11, make screw rod 7 move up and down in threaded rod 12 through hole, thus extending or shortening the distance between screw rod 7 and slide bar 4, can meet when different size of spring 3 is applied on this fuel gas pipeline Safety relief valve and spring 3 is protected; By with the spring 3 changed in diffusion valve, it is achieved diffusion valve is applied on the trachea of different air pressure.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations. All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (3)
1. a fuel gas pipeline Safety relief valve, including valve body and valve gap, valve body is provided with air pressure mouth and pressure relief opening, it is characterised in that the inner headed face of described air pressure mouth one end in valve body is taper surface, is provided with the sealing block coordinated with taper surface in air pressure mouth; Described sealing block be arranged over threaded rod, valve body is stretched out in threaded rod upper end, and is connected to rotary handle; Described threaded rod and valve gap threaded engagement; Described threaded rod in axial direction offers through hole, is provided with the slide bar slidably coordinated with it in through hole, and the lower end of slide bar is fixing with sealing block to be connected; Being arranged with spring outside described slide bar, one end of spring is connected with the lower surface of threaded rod, and the other end is connected with the upper surface of sealing block; Being provided with screw rod in the through hole of described threaded rod, threaded rod is stretched out in the upper end of screw rod, and is connected to hands handle; The through hole of described screw rod and threaded rod passes through threaded engagement.
2. fuel gas pipeline Safety relief valve according to claim 1, it is characterised in that: described sealing block is elastomeric material.
3. fuel gas pipeline Safety relief valve according to claim 1, it is characterised in that: described valve body and valve gap are bolted to connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521025237.1U CN205298707U (en) | 2015-12-11 | 2015-12-11 | Safety blow -off valve for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521025237.1U CN205298707U (en) | 2015-12-11 | 2015-12-11 | Safety blow -off valve for gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205298707U true CN205298707U (en) | 2016-06-08 |
Family
ID=56430547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521025237.1U Expired - Fee Related CN205298707U (en) | 2015-12-11 | 2015-12-11 | Safety blow -off valve for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205298707U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370941A (en) * | 2015-12-11 | 2016-03-02 | 四川嘉星燃气设备制造有限公司 | Safety blow-off valve for gas pipeline |
| CN111711321A (en) * | 2020-05-09 | 2020-09-25 | 南京玛格耐特智能科技有限公司 | Oil cooling speed regulation type cooling system |
-
2015
- 2015-12-11 CN CN201521025237.1U patent/CN205298707U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370941A (en) * | 2015-12-11 | 2016-03-02 | 四川嘉星燃气设备制造有限公司 | Safety blow-off valve for gas pipeline |
| CN111711321A (en) * | 2020-05-09 | 2020-09-25 | 南京玛格耐特智能科技有限公司 | Oil cooling speed regulation type cooling system |
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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: 20160608 Termination date: 20171211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |