CN103511692A - Pipeline pressure-relief device - Google Patents
Pipeline pressure-relief device Download PDFInfo
- Publication number
- CN103511692A CN103511692A CN201210212410.3A CN201210212410A CN103511692A CN 103511692 A CN103511692 A CN 103511692A CN 201210212410 A CN201210212410 A CN 201210212410A CN 103511692 A CN103511692 A CN 103511692A
- Authority
- CN
- China
- Prior art keywords
- valve body
- pipeline pressure
- pressure release
- pipeline
- release device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
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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
- F16K17/12—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side weight-loaded
Abstract
The invention discloses a pipeline pressure-relief device. The pipeline pressure-relief device comprises a valve body and a valve cover, the valve body is arranged at the terminal of a pipeline and connected to the pipeline in a sealed mode, the valve body is movably connected to the valve cover, a seal ring is arranged between the valve body and the valve cover, the valve body is provided with a rocker arm shaft which is connected with a rocker arm clamping hook, and the rocker arm clamping hook is buckled to the valve cover; the valve body is further provided with an air cylinder which is provided with an small air-cylinder hole, the small air-cylinder hole is communicated with the interior of the valve body, and a piston rod of the air cylinder is connected to the rocker arm clamping hook; an elastomer is further arranged between the valve body and the rocker arm clamping hook, the elastomer and the piston rod of the air cylinder form a lever structure for the rocker arm clamping hook, and the lever structure makes the rocker arm shaft as the fulcrum. The pipeline pressure-relief device is small in size, light in weight, simple in structure, low in production cost, high in control accuracy, and capable of resetting and being sealed automatically.
Description
Technical field
The present invention relates to pressure relief device, relate in particular to a kind of pipeline pressure release device.
Background technique
Existing pipeline gas flameproof apparatus is mostly membrance valve, and adpting flange is installed on gas pipeline, and guide rod is fixed on adpting flange, and adpting flange is movably set on guide rod, and spacing by bounding means; Gas pipeline is provided with membrance valve.During normal operation, adpting flange confining gas pipeline; In gas pipeline, during gas pressure postcritical, membrance valve is subject to gas pressure-acting destroyed, and gas is gone out gas pipeline, and adpting flange is upwards ejected, and causes gas to external leakage; And after gas pressure declines, adpting flange cannot be returned to original position and the complete confining gas pipeline mouth of pipe, makes gas pipeline continue to leak and causes second accident.Chinese patent discloses CN03255798.1 gas anti-explosion automatic sealing device, is installed on gas pipeline, comprises adpting flange, position shelf, gear-stopping bar, airtight ball; Wherein, described adpting flange, comprises upper and lower flange, is fixed on gas pipeline, and this upper and lower flange offers respectively relief hole; Described position shelf surrounds a box shaped body by some positioning plates, is fixed on adpting flange; Described gear-stopping bar is arranged on position shelf; Airtight ball is arranged in position shelf, is positioned on adpting flange relief hole, and this airtight ball coordinates with relief hole.Prior art Decompression valves is mainly used in pipeline terminal, pilot line pressure, the size of pilot pressure regulates by the counterweight of tops, be applicable to the industrial departments such as cement, electric power, when system pressure surpasses setting pressure, wash Decompression valves top cover open pressure release, after earth pressure release, under counterweight Action of Gravity Field, reset.But be that pipeline gas flameproof apparatus or Decompression valves all exist complex structure, the defect that cost of production is high.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide a kind of volume little, lightweight, simple in structure, save material, cost of production is low, control accuracy is high, and the pipeline pressure release device of the sealing that can automatically reset.
The present invention is achieved by the following technical solution:
Pipeline pressure release device, comprise valve body and valve gap, described valve body is arranged on pipeline terminal and is connected with seal for pipe joints, described valve body is flexibly connected with valve gap, between described valve body and valve gap, be provided with seal ring, on described valve body, be provided with pitman arm shaft, described pitman arm shaft is connected with rocking arm snap fit, and described rocking arm snap fit buckle valve gap; Described valve body is also provided with cylinder, and described cylinder is provided with cylinder aperture, and described cylinder aperture communicates with valve inner, and the piston rod of described cylinder is connected with rocking arm snap fit; Between described valve body and rocking arm snap fit, be also provided with elastomer, described elastomer and cylinder piston rod form and take the lever construction that pitman arm shaft is fulcrum rocking arm snap fit.
On described valve body, be also provided with valve gap postive stop baffle.
Described valve body is connected by the rotating shaft being arranged on valve body with valve gap.
Described pitman arm shaft is connected with valve body by pillar.
Described elastomer is stage clip.
When the present invention works, when pipeline internal air pressure is during lower than setting pressure, stage clip compresses rocking arm snap fit valve body cover plate and is pressed on valve body by seal ring; When pipeline internal air pressure is during higher than setting pressure, gas promotes cylinder piston by cylinder aperture and piston rod promotion rocking arm snap fit overcomes pressure spring force, and rocking arm snap fit leaves top cover, and top cover is washed pressure release open, after earth pressure release, under Gravitative Loads, reset, rocking arm snap fit catches on top cover again.Pipeline pressure release device of the present invention replaces counterweight gravity reduction in prior art, controls manifold pressure.
The present invention compared with prior art has following beneficial effect:
Pipeline pressure release device of the present invention replaces counterweight, by regulating stage clip pressure size, can control valve road in maximum pressure, there is volume little, lightweight, simple in structure, save material, cost of production is low, control accuracy is high, and the feature that can automatically reset and seal.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Sequence number in figure: 1, valve body, 2, valve gap, 3, seal ring, 4, pitman arm shaft, 5, rocking arm snap fit, 6, cylinder, 7, cylinder aperture, 8, piston rod, 9, valve gap postive stop baffle, 10, rotating shaft, 11, pillar, 12, stage clip.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Shown in Fig. 1, a kind of pipeline pressure release device of the present invention, comprise valve body 1 and valve gap 2, described valve body 1 is arranged on pipeline terminal and is connected with seal for pipe joints, described valve body 1 is connected by the rotating shaft 10 being arranged on valve body 1 with valve gap 2, between described valve body 1 and valve gap 2, is provided with seal ring 3; On described valve body 1, be provided with pitman arm shaft 4, described pitman arm shaft 4 is connected with valve body 1 by pillar 11, and described pitman arm shaft 4 is connected with rocking arm snap fit 5, and described rocking arm snap fit 5 buckles valve gap 2; Described valve body 1 is also provided with cylinder 6, establishes piston and piston rod 8 in described cylinder 6, and described cylinder 6 is also provided with cylinder aperture 7, and described cylinder aperture 7 communicates with valve body 1 inside, and the piston rod 8 of described cylinder is connected with rocking arm snap fit 5; Between described valve body 1 and rocking arm snap fit 5, be also provided with stage clip 12,8 pairs of rocking arm snap fits of described stage clip 12 and cylinder piston rod 5 form take the lever construction that pitman arm shaft 4 is fulcrum; On described valve body 1, be also provided with valve gap postive stop baffle 9.
Embodiment is just for the ease of understanding technological scheme of the present invention; do not form limiting the scope of the invention; every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present invention, above scheme being done that does not depart from technical solution of the present invention, within all still belonging to protection domain of the present invention.
Claims (8)
1. pipeline pressure release device, comprise valve body (1) with valve gap (2), (1) described valve body is arranged on pipeline terminal and is connected with seal for pipe joints, (2) (1) described valve body be flexibly connected with valve gap, described valve body (1) and valve gap be provided with seal ring (3) between (2), it is characterized in that: on described valve body, be provided with pitman arm shaft (4), (5) described pitman arm shaft is connected with rocking arm snap fit, described rocking arm snap fit buckle valve gap; (6) described valve body is also provided with cylinder, and (7) described cylinder is provided with cylinder aperture, and (7) described cylinder aperture communicates with valve inner, and (8) the piston rod of described cylinder is connected with rocking arm snap fit; Between described valve body and rocking arm snap fit, be also provided with elastomer, described elastomer and cylinder piston rod form and take the lever construction that pitman arm shaft is fulcrum rocking arm snap fit.
2. pipeline pressure release device according to claim 1, is characterized in that: on described valve body, be also provided with valve gap postive stop baffle (9).
3. pipeline pressure release device according to claim 1 and 2, is characterized in that: (10) described valve body is connected by the rotating shaft being arranged on valve body with valve gap.
4. pipeline pressure release device according to claim 1 and 2, is characterized in that: (11) described pitman arm shaft is connected with valve body by pillar.
5. pipeline pressure release device according to claim 3, is characterized in that: described pitman arm shaft is connected with valve body by pillar.
6. pipeline pressure release device according to claim 1 and 2, is characterized in that: described elastomer be stage clip (12).
7. pipeline pressure release device according to claim 3, is characterized in that: described elastomer be stage clip (12).
8. pipeline pressure release device according to claim 4, is characterized in that: described elastomer be stage clip (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210212410.3A CN103511692A (en) | 2012-06-26 | 2012-06-26 | Pipeline pressure-relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210212410.3A CN103511692A (en) | 2012-06-26 | 2012-06-26 | Pipeline pressure-relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103511692A true CN103511692A (en) | 2014-01-15 |
Family
ID=49894883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210212410.3A Pending CN103511692A (en) | 2012-06-26 | 2012-06-26 | Pipeline pressure-relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103511692A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2867013Y (en) * | 2005-12-15 | 2007-02-07 | 石家庄太行冶金阀门有限公司 | Pneumatic spring pressing explosion releasing valve |
| CN201111578Y (en) * | 2007-10-26 | 2008-09-10 | 江苏科林集团有限公司 | Spring self-restoring decompression device |
| CN102506206A (en) * | 2011-11-23 | 2012-06-20 | 石家庄阀门一厂股份有限公司 | Bleeding valve realizing sealing effect by adopting magnetic force and gravity of valve cap |
| CN202708232U (en) * | 2012-06-26 | 2013-01-30 | 江苏海陵机械有限公司 | Pipeline pressure relief device |
-
2012
- 2012-06-26 CN CN201210212410.3A patent/CN103511692A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2867013Y (en) * | 2005-12-15 | 2007-02-07 | 石家庄太行冶金阀门有限公司 | Pneumatic spring pressing explosion releasing valve |
| CN201111578Y (en) * | 2007-10-26 | 2008-09-10 | 江苏科林集团有限公司 | Spring self-restoring decompression device |
| CN102506206A (en) * | 2011-11-23 | 2012-06-20 | 石家庄阀门一厂股份有限公司 | Bleeding valve realizing sealing effect by adopting magnetic force and gravity of valve cap |
| CN202708232U (en) * | 2012-06-26 | 2013-01-30 | 江苏海陵机械有限公司 | Pipeline pressure relief device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |