CN104100839A - Pressure regulation and safety device for gas - Google Patents
Pressure regulation and safety device for gas Download PDFInfo
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- CN104100839A CN104100839A CN201410356091.2A CN201410356091A CN104100839A CN 104100839 A CN104100839 A CN 104100839A CN 201410356091 A CN201410356091 A CN 201410356091A CN 104100839 A CN104100839 A CN 104100839A
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Abstract
The invention relates to a pressure regulation and safety device for gas. A bypass gas conveying pipeline is parallelly disposed on a main gas conveying pipeline behind a decarbonization system outlet gate valve. A stop valve is disposed on the bypass gas conveying pipeline. A pneumatic pressure regulating valve is mounted on the main gas conveying pipeline. An emergency cut-off valve is disposed behind the intersection of the bypass gas conveying pipeline and the main gas conveying pipeline. The pneumatic pressure regulating valve and the emergency cut-off valve are connected with a computer distributed control system. The pneumatic pressure regulating valve is a pressure balance type regulating valve, adopts a single seat and sleeve type structure, is matched with a multi-spring pneumatic film executing mechanism, and uses a cage type sleeve valve element. The pressure regulation and safety device is simple in structure, sensitive in response, reliable in action, and the like. By the pneumatic pressure regulating valve and the emergency cut-off valve, stable and safe gas supply of a natural gas pipeline is achieved.
Description
Technical field
The present invention relates to gas pressure regulation and safety installations, especially relate to a kind of pressure regulation and safety installations of rock gas.
Background technique
Rock gas decompression air feed generally adopts traditional relief valve group, it is made up of multiple accessories, and one group of control fitting is generally made up of reduction valve, pressure gauge, stop valve, y-type filter, rubber soft joint, spring manometer, pressure gauge valve, pressure gauge bend pipe, safety valve etc.
Natural gas pressure-reducing valve is made up of main valve and pilot valve two-part.Main valve is mainly made up of parts such as valve seat, main valve disc, piston, springs.Pilot valve is mainly made up of parts such as valve seat, flap, diaphragm, spring, Regulation springs.By regulating Regulation spring pressure setting outlet pressure, utilizing diaphragm sensing outlet pressure to change, open and close the size of driven plunger adjusting main valve throttling position area of passage by pilot valve, realize pressure-reduced and-regulated function.The work of reduction valve is controlled by downstream pressure.In the time that pressure inductor detects that valve pressure instruction raises, reduction valve valve opening reduces; When detecting that decompression downstream pressure reduces, reduction valve valve opening increases, to meet control requirement.But it is more loaded down with trivial details that above-mentioned reduction valve group is installed, react in process of production slow motion, flow, pressure regulate unstable, easily form pipe resistance, the most important thing is that inconvenience, with changing and regulate in time supply gas pressure and air demand with gas, affects resident's normal air feed demand and stablizes.
Zheng Tuoxiang Qidong, Nantong China Resources transport gas, maximum delivery can reach 3000NM
3/ h, natural-gas transfer pipeline is directly drawn from my company's decarbonization system outlet, decarbonization system pressure is 1.3-1.4MPa, and need ensure below safety pressure 0.45MPa to China Resources gas pipeline, to prevent pipeline superpressure booster phenomenon, cause serious accident involving serious consequences, and China Resources can, according to the high low peak adjustment of resident's use gas air demand, cause decarbonization system outlet valve to regulate frequent.
Summary of the invention
Gas pressure regulation of the present invention and safety installations, solved in production process and reacted slow motion, and flow, pressure regulate unstable, convenient with changing and regulate in time supply gas pressure and air demand with gas.
A kind of gas pressure regulation and safety installations, it is characterized in that, on main air delivering pipeline after decarbonization system outlet gate valve, be arranged in parallel a bypass air delivering pipeline, on bypass air delivering pipeline, be provided with stop valve, main air delivering pipeline is installed pneumatic pressure-regulating valve, after the joint of bypass pneumatic tube and main air delivering pipeline, Emergeny Cutoff Valves is set, described pneumatic pressure-regulating valve, Emergeny Cutoff Valves is connected with computer distributed control system, described pneumatic pressure-regulating valve is pressure balance type modulating valve, adopt single seat, telescoping structure, many springs of adapted pneumatic diaphragn actuating mechanism, pneumatic pressure-regulating valve spool adopts cage sleeve spool.
Gas pressure regulation and safety installations can arrange respectively stop valve at automatic stop valve both sides pipeline, facilitate replacing and the maintenance of automatic stop valve.
After system outlet gate valve, pneumatic pressure-regulating valve is installed, by computer distributed control system, can, easily according to changing with gas, be adjusted supply gas pressure and air demand.Pneumatic pressure-regulating valve is a kind of pressure balance type modulating valve, adopts single seat, telescoping structure, many springs of adapted pneumatic diaphragn actuating mechanism, and actuator is highly low, lightweight, it is easy to equip.Pneumatic pressure-regulating valve spool adopts cage sleeve spool, bleed pressure is transformed to the straight-line displacement of spool, and regulating and controlling valve opening, reaches the pressure of pipeline inner fluid is regulated continuously automatically.
Pneumatic pressure-regulating valve, because do not need exterior power supply, only depends on source of the gas to drive, safe and convenient to use, sets force value and can drop into automatic operation, so obtained using more and more widely after installing.Its relative natural gas pressure-reducing valve group is easy for installation, control is simple, and reaction is swift in motion, and can complete fast regulating command, and essential safety, does not need to take in addition explosion precaution again.
We increase automatic stop valve on gas pipeline simultaneously, feed back according to pressure signal.If because superpressure appears in special circumstances, can cut off in time air feed in air feed process, guarantee system stable operation under safety pressure.It is made up of many springs pneumatic diaphragn actuating mechanism or floating type piston actuator and modulating valve, receives the signal of regulation meter, controls cut-out, connection or the switching of process pipe inner fluid.Have simple in structurely, be quick on the draw, the features such as reliable in action, by pneumatic control valve and emergency cut-off valve action, natural gas line reaches steady, the safe object of air feed.
brief description of the drawings
Fig. 1 is traditional relief valve group structural drawing;
Fig. 2 is gas pressure regulation of the present invention and safety installations schematic diagram.
Embodiment
Fig. 2 is gas pressure regulation of the present invention and safety installations schematic diagram, on main air delivering pipeline after decarbonization system outlet gate valve, be arranged in parallel a bypass air delivering pipeline, on bypass air delivering pipeline, be provided with stop valve, main air delivering pipeline is installed pneumatic pressure-regulating valve, after the joint of bypass pneumatic tube and main air delivering pipeline, Emergeny Cutoff Valves is set, described pneumatic pressure-regulating valve, Emergeny Cutoff Valves is connected with computer distributed control system, described pneumatic pressure-regulating valve is pressure balance type modulating valve, adopt single seat, telescoping structure, many springs of adapted pneumatic diaphragn actuating mechanism, pneumatic pressure-regulating valve spool adopts cage sleeve spool.
Gas pressure regulation and safety installations can arrange respectively stop valve at automatic stop valve both sides pipeline, facilitate replacing and the maintenance of automatic stop valve.
After system outlet gate valve, pneumatic pressure-regulating valve is installed, by computer distributed control system, can, easily according to changing with gas, be adjusted supply gas pressure and air demand.Pneumatic pressure-regulating valve is a kind of pressure balance type modulating valve, adopts single seat, telescoping structure, many springs of adapted pneumatic diaphragn actuating mechanism, and actuator is highly low, lightweight, it is easy to equip.Pneumatic pressure-regulating valve spool adopts cage sleeve spool, bleed pressure is transformed to the straight-line displacement of spool, and regulating and controlling valve opening, reaches the pressure of pipeline inner fluid is regulated continuously automatically.
Pneumatic pressure-regulating valve, because do not need exterior power supply, only depends on source of the gas to drive, safe and convenient to use, sets force value and can drop into automatic operation, so obtained using more and more widely after installing.Its relative natural gas pressure-reducing valve group is easy for installation, control is simple, and reaction is swift in motion, and can complete fast regulating command, and essential safety, does not need to take in addition explosion precaution again.
Simultaneously we increase automatic stop valve on gas pipeline, according to pressure signal feedback, if in air feed process because superpressure appears in special circumstances, can cut off in time air feed, guarantee system stable operation under safety pressure.It is made up of many springs pneumatic diaphragn actuating mechanism or floating type piston actuator and modulating valve, receives the signal of regulation meter, controls cut-out, connection or the switching of process pipe inner fluid.Have simple in structurely, be quick on the draw, the features such as reliable in action, by pneumatic control valve and emergency cut-off valve action, natural gas line reaches steady, the safe object of air feed.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. a gas pressure regulation and safety installations, it is characterized in that, on main air delivering pipeline after decarbonization system outlet gate valve, be arranged in parallel a bypass air delivering pipeline, on bypass air delivering pipeline, be provided with stop valve, main air delivering pipeline is installed pneumatic pressure-regulating valve, after the joint of bypass pneumatic tube and main air delivering pipeline, Emergeny Cutoff Valves is set, described pneumatic pressure-regulating valve, Emergeny Cutoff Valves is connected with computer distributed control system, described pneumatic pressure-regulating valve is pressure balance type modulating valve, adopt single seat, telescoping structure, many springs of adapted pneumatic diaphragn actuating mechanism, pneumatic pressure-regulating valve spool adopts cage sleeve spool.
2. gas pressure regulation according to claim 1 and safety installations, is characterized in that, on automatic stop valve both sides, pipeline arranges respectively stop valve.
3. gas pressure regulation according to claim 1 and safety installations, is characterized in that, described gas is rock gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356091.2A CN104100839A (en) | 2014-07-24 | 2014-07-24 | Pressure regulation and safety device for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356091.2A CN104100839A (en) | 2014-07-24 | 2014-07-24 | Pressure regulation and safety device for gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104100839A true CN104100839A (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410356091.2A Pending CN104100839A (en) | 2014-07-24 | 2014-07-24 | Pressure regulation and safety device for gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN104100839A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283584A (en) * | 2020-10-15 | 2021-01-29 | 中国能源建设集团广东省电力设计研究院有限公司 | Exchange system |
| CN113175623A (en) * | 2021-03-17 | 2021-07-27 | 河钢股份有限公司承德分公司 | Device and method for stably supplying metallurgical steam |
| CN113757562A (en) * | 2021-08-24 | 2021-12-07 | 广东欧文莱陶瓷有限公司 | Natural gas supply system and natural gas environmental protection ceramic brick kiln |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235799A (en) * | 1987-03-25 | 1988-09-30 | Toshiba Corp | Compressed air feeder |
| CN201297647Y (en) * | 2008-11-19 | 2009-08-26 | 攀枝花新钢钒股份有限公司 | Combustible gas pipeline pressure control system |
| CN102155621A (en) * | 2011-01-14 | 2011-08-17 | 上海万事红燃气技术发展有限公司 | Medium pressure regulating box in compressed natural gas supplying station and pressure regulating and gas supplying method thereof |
| CN204005259U (en) * | 2014-07-24 | 2014-12-10 | 北京正拓气体科技有限公司 | A kind of gas pressure regulation and safety installations |
-
2014
- 2014-07-24 CN CN201410356091.2A patent/CN104100839A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235799A (en) * | 1987-03-25 | 1988-09-30 | Toshiba Corp | Compressed air feeder |
| CN201297647Y (en) * | 2008-11-19 | 2009-08-26 | 攀枝花新钢钒股份有限公司 | Combustible gas pipeline pressure control system |
| CN102155621A (en) * | 2011-01-14 | 2011-08-17 | 上海万事红燃气技术发展有限公司 | Medium pressure regulating box in compressed natural gas supplying station and pressure regulating and gas supplying method thereof |
| CN204005259U (en) * | 2014-07-24 | 2014-12-10 | 北京正拓气体科技有限公司 | A kind of gas pressure regulation and safety installations |
Non-Patent Citations (1)
| Title |
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| 钟小木等: "输气管道分输站调压系统的优化设置", 《天然气与石油》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283584A (en) * | 2020-10-15 | 2021-01-29 | 中国能源建设集团广东省电力设计研究院有限公司 | Exchange system |
| CN113175623A (en) * | 2021-03-17 | 2021-07-27 | 河钢股份有限公司承德分公司 | Device and method for stably supplying metallurgical steam |
| CN113757562A (en) * | 2021-08-24 | 2021-12-07 | 广东欧文莱陶瓷有限公司 | Natural gas supply system and natural gas environmental protection ceramic brick kiln |
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Application publication date: 20141015 |