CN101575958B - Electromagnetic pneumatic switch well valve for natural gas well - Google Patents
Electromagnetic pneumatic switch well valve for natural gas well Download PDFInfo
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- CN101575958B CN101575958B CN2009100866215A CN200910086621A CN101575958B CN 101575958 B CN101575958 B CN 101575958B CN 2009100866215 A CN2009100866215 A CN 2009100866215A CN 200910086621 A CN200910086621 A CN 200910086621A CN 101575958 B CN101575958 B CN 101575958B
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- 239000002343 natural gas well Substances 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 28
- 239000011148 porous material Substances 0.000 claims description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 12
- 239000003345 natural gas Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910001096 P alloy Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
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- 238000000034 method Methods 0.000 description 2
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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Abstract
The electromagnetic pneumatic well valve for natural gas well is used in natural gas well field and gas pipeline. Is characterized in that: a cylindrical main valve element is arranged in the valve body. The upper part of the main valve core is fixed with a valve cover. The main valve core is provided with a spring. The main valve core wall is provided with a balance pressure hole. The valve body and the valve cover are internally provided with communicating holes. The top of the valve cover is connected with a magnetic head fixing seat. The valve cover is provided with a pressure relief hole. A transverse electromagnetic head and a longitudinal electromagnetic head are fixed on the magnetic head fixing seat through a union cap. An annular groove is formed in the outer wall of the longitudinal core, and the annular groove is located so that the transverse core locks the longitudinal core when the longitudinal core is lifted up to fully open the communication hole. The effect is as follows: the valve can be suitable for a natural gas wellhead pipeline, the valve is switched on and off by weak electromagnetic force under the condition of not depending on external air source driving, and the natural gas wellhead remote control switching well and ultra-low pressure switching well are realized through a control circuit. And the air source is automatically cut off to realize protection when the pressure exceeds or is under low pressure. The remote control opening, remote control closing and automatic under-voltage closing can be realized.
Description
Technical field
The present invention relates to production gas technology field, oil field, the electromagnetic pneumatic switch valve on particularly a kind of natural gas well site and the gas pipeline.
Background technology
In the natural gas well manufacturing process, when adopting the downhole choke explained hereafter, pit shaft and surface line can adopt the mesolow design.Lost efficacy to the destruction of downstream mesolow pipeline and relevant device for preventing underground throttle device this moment, prevents simultaneously to cause a large amount of leakages of natural gas because of downstream line breaks, and well head need be installed high-low pressure safeguard protection cutting device.This moment, the work of switch well can only be accomplished in the well site.Big when the gas field area, producing well quantity is many, when well location disperses, the gas well production later stage, switch well workload was big, can't realize manual control switch's well valve when changing Batch Process over to, gas well management maintenance difficulty is big; And when being in an emergency, in time there is certain potential safety hazard in closed-in well implication source.Therefore need a kind of novel remote gauge tap well device of development,, reduce manpower and materials consumption to guarantee system's security of operation.And the gas well well location disperses, no external power supply etc., and conventional valves can't satisfy on-the-spot needs.It is little under this background condition, to have developed a kind of maintenance workload, is applicable to the control electromagnetic pneumatic switch well device wireless far away of the natural gas well, can realize that Long-distance Control promptly blocks and the switch well.
Chinese patent open (bulletin) number: CN2918908Y provides a kind of " the straight explosion-proof solenoid valve that natural gas is used ", is that to be used for compressed natural gas be working media, the right-angle type explosion-proof solenoid valve that the natural gas of realization open and close controlling function is used in pipeline.Form by housing, discharge connection, main valve parts, anti-explosion is electromagnetic iron, guide's shutter member, attaching nut; Housing one end is connected with anti-explosion is electromagnetic iron through the attaching nut; The housing other end is connected with discharge connection; The main valve parts are positioned at the space of discharge connection and housing formation, and guide's shutter member is arranged in anti-explosion is electromagnetic iron, and the one of which end is in housing; Anti-explosion is electromagnetic iron is made up of coil, armature, nut, separation sleeve, and the ladder axial hole is arranged in the armature, and guide's shutter member is arranged on the ladder axial hole; Two valve are arranged, and guide's valve is opened during work, and main valve is opened again, is two steps of branch to realize that gas is arranged the enclosure interior in valve through discharge connection, and safety in utilization improves.
Summary of the invention
The objective of the invention is: a kind of electromagnetic pneumatic switch well valve of natural gas well is provided; Can be applicable to that natural gas well head external transport pipeline closes; Under the situation that does not rely on external high-pressure air source driving; Under faint electric energy control, realize natural gas well well head remote control switch well and ultra under-pressure closing well, realize the safe and efficient management that gas well is produced.This electromagnetic pneumatic switch well valve of natural gas well is installed on the gas production wellhead external transport pipeline, and when pressure was not in setting range, through RTU circuit Long-distance Control and setting pressure comparison, power supply realized the valve emergency cut-off to Electrical heads; When ultra under-pressure, block source of the gas automatically and realize protection.
The technical scheme that the present invention adopts is: electromagnetic pneumatic switch well valve of natural gas well, mainly form by valve body, transverse electric magnetic head, crossed strip, horizontal magnetic core, vertical Electrical heads, longitudinal spring, vertical magnetic core, magnetic head holder, valve gap, spring, main valve plug.There are air inlet port and gas outlet in the valve body both sides, and air inlet port and gas outlet can connecting lines.In the air inlet port of valve body inlet channel is arranged, outlet passageway is arranged in the gas outlet.Between inlet channel and outlet passageway, valve core case is arranged.Cylindric main valve plug is arranged in valve body, and main valve plug can slide up and down in the centre bore of valve body, and the main valve plug baseplane is on the valve core case between inlet channel and the outlet passageway.It is characterized in that: be fixed with valve gap on main valve plug top.Spring is arranged in the main valve plug, and valve gap is pressed in the top of spring.The equilibrium pressure hole is arranged on the main valve plug wall, and the equilibrium pressure hole is communicated with the inlet channel of valve body.On valve body and valve gap, intercommunicating pore is arranged, opening part one end of intercommunicating pore is in the outlet passageway of valve body; The opening part other end of intercommunicating pore is in the top center position of valve gap.Top bit at valve gap is equipped with protruding cylinder, and the cylinder outer wall has screw thread, is connected with the magnetic head holder on the cylinder outer wall thread.There is annular groove on the plane on cylinder.Pressure relief vent is arranged on the valve gap, and the opening of pressure relief vent one end is in the cylindrical top annular groove of valve gap, and the other end opening of pressure relief vent is in the bottom of valve gap.Pressure relief vent can import intercommunicating pore with the gases at high pressure in the main valve plug.
On the magnetic head holder, be fixed with transverse electric magnetic head and vertical Electrical heads through the union cap.Vertically in the Electrical heads longitudinal spring and vertical magnetic core are being arranged, vertically magnetic core is cylindrical.Longitudinal spring can promote vertical magnetic core, and vertically the bottom of magnetic core is at the opening part of intercommunicating pore.Vertically magnetic core moves back and forth and can open or close intercommunicating pore.Crossed strip and horizontal magnetic core are arranged in the transverse electric magnetic head, and laterally magnetic core is cylindrical, and crossed strip can promote horizontal magnetic core.On the outer wall of vertical magnetic core, annular groove is arranged, the position of annular groove is when carrying on vertical magnetic core when opening intercommunicating pore fully, and laterally the end of magnetic core can embed in the annular groove of vertical magnetic core, and horizontal magnetic core can lock vertical magnetic core.
Described transverse electric magnetic head is the Electrical heads that direct current is controlled with vertical Electrical heads, and there are coil and electromagnet in inside, and those skilled in the art can accomplish, and is not key of the present invention, is not described in detail.
In order to reduce or to avoid dirt to get in the main valve plug, on the main valve plug wall, be with silk screen, silk screen covers on the equilibrium pressure hole.
In order to lower the main valve plug slip resistance, between valve body and main valve plug, be fixed with the ring lining cover.
For moving back and forth, vertical magnetic core opens or closes intercommunicating pore.End at vertical magnetic core is fixed with seal cover.
Beneficial effect of the present invention: electromagnetic pneumatic switch well valve of natural gas well of the present invention; Be installed on the gas production wellhead external transport pipeline; Can be applicable to natural gas well head pipeline; Do not relying under the external gas source driving situation, under faint electric energy control, realizing natural gas well well head remote control switch well and ultra under-pressure closing well.When pressure was not in setting range, through RTU circuit Long-distance Control and setting pressure comparison, power supply realized the valve emergency cut-off to Electrical heads; When ultra under-pressure, block source of the gas automatically and realize protection.Can realize that control far away is opened, control far away is closed, under-voltagely close automatically.
This electromagnetic pneumatic switch well valve of natural gas well has compact conformation, in light weight, safe and reliable characteristics.This device adopts on-the-spot solar energy low pressure direct current 12V power supply, only needs the moment energising promptly accomplish the valve switch action, and spool position does not need electricity to keep, and energy conservation is specially adapted to be located in the situation that innerland, desert, well head do not have conventional power supply.And must be charged always during the work of conventional electromagnetic valve, for the long-term charged unsafe factor that causes of gas well mouth; Conventional electromagnetic valve can only often be opened or often close; Conventional electromagnetic valve has only low pressure and little caliber.
Measure explosion-proof, anticorrosion, sand control that this Design of device has been considered.Install employed Electrical heads and belong to Exia level explosion-proof type Electrical heads, the coil and the connector lug of Electrical heads all water envelope with epoxy resin, and explosion-proof performance is fabulous, can bear the pressure of 36MPa, and electromagnetic coil has EXd II CT4 explosive-proof grade.This device valve body material adopts 2Cr13 (stainless steel) device integral body to machine the back nickel-phosphorus alloy plating, is common stainless steel anti-H 2 S, anticorrosive, anti-oxidant etc. three times.The device inner workings adopts totally enclosed type interlock switching mechanism.Spool mounting filtering net and sand control elastic tape, so valve implements can not receive in the switch motion process influence of sand grains and other solid matters, from device structure solved puzzlement gas for a long time the device damage problem that causes with solid impurity.
Switch time, the switch well pressure is pressure differences not less than 1 second; Use 30 watts of power, the battery of 12AH is full of electricity can satisfy switch nearly ten thousand times.
Description of drawings
Fig. 1 is an electromagnetic pneumatic switch well valve of natural gas well structural profile sketch map of the present invention.
Fig. 2 is valve gap 13 structural representations.
Fig. 3 is valve body 1 structural representation.
Fig. 4 is main valve plug 15 structural representations.
Latched position relation when Fig. 5 a is Open valve between horizontal magnetic core 4 and the vertical magnetic core 8.
Latched position relation when Fig. 5 b is valve-off between horizontal magnetic core 4 and the vertical magnetic core 8.
Among the figure, 1. valve body, 2. transverse electric magnetic head, 3. crossed strip, 4. laterally magnetic core, 5. union cap; 6. vertical Electrical heads, 7. longitudinal spring, 8. vertically magnetic core, 9. magnetic head seat, 10. seal cover; 11. pressure relief vent, 12. intercommunicating pores, 13. valve seats, 14. springs, 15. main valve plugs; 16. liner, 17. equilibrium pressure holes, 18. silk screens, 19. sealing mats, 20. pipelines.
The specific embodiment
Embodiment 1: with an electromagnetic pneumatic switch well valve of natural gas well is example, and the present invention is done further explain.
Consult Fig. 1.Electromagnetic pneumatic switch well valve of natural gas well mainly is made up of valve body 1, transverse electric magnetic head 2, crossed strip 3, horizontal magnetic core 4, vertical Electrical heads 6, longitudinal spring 7, vertical magnetic core 8, magnetic head holder 9, valve gap 13, spring 14, main valve plug 15.Valve body 1 adopts 2Cr13 (stainless steel) integral body to be processed into, then nickel-phosphorus alloy plating.There are air inlet port and gas outlet in valve body 1 both sides, and air inlet port and gas outlet can connecting lines 20.The internal diameter of air inlet port and gas outlet is 45 millimeters of φ.In the air inlet port of valve body 1 inlet channel is arranged, outlet passageway is arranged in the gas outlet.Between inlet channel and outlet passageway, process a plane valve core case.A cylindric main valve plug 15 is arranged in valve body 1 centre bore, and the external diameter of main valve plug 15 is 66 millimeters.Between valve body 1 and main valve plug 15, be fixed with a ring lining cover 16.Main valve plug 15 can slide up and down in the centre bore of valve body 1, and main valve plug 15 baseplanes are on the valve core case between inlet channel and the outlet passageway.Be fixed with valve gap 13 on main valve plug 15 tops.Spring 14 is arranged in the main valve plug 15, and valve gap 13 is pressed in the top of spring 14.Consult Fig. 4.An equilibrium pressure hole 17 is arranged on main valve plug 15 walls, and the diameter in equilibrium pressure hole 17 is 1.2 millimeters.On main valve plug 15 walls, be with layer of copper silk screen 18, copper mesh 18 covers on equilibrium pressure hole 17.Equilibrium pressure hole 17 is communicated with the inlet channel of valve body 1.On the lower plane of main valve plug 15, inlay and be fixed with a sealing mat 19.Sealing mat 19 cooperates with the plane valve core case of valve body 1, plays sealing function.
Consult Fig. 1.On valve body 1 and valve gap 13, intercommunicating pore 12 is arranged, the minimum diameter of intercommunicating pore 12 is 2 millimeters.12 fens two parts parts of intercommunicating pore are on valve body 1, and another part is installed back two parts intercommunicating pore 12 and is communicated with on valve gap 13.In the outlet passageway of valve body 1, the opening part other end of intercommunicating pore 12 is in the top center position of valve gap 13 at opening part one end of intercommunicating pore 12.Consult Fig. 2.Top bit at valve gap 13 is equipped with protruding cylinder, and the cylinder outer wall has screw thread.Consult Fig. 1.Be connected with magnetic head holder 9 on the cylinder outer wall thread.There is annular groove on the plane on cylinder.A pressure relief vent 11 is arranged on the valve gap 13, and the diameter of pressure relief vent 11 is 2 millimeters.The opening of pressure relief vent 11 1 ends is in valve gap 13 cylindrical top annular grooves, and the other end opening of pressure relief vent 11 is in the bottom of valve gap 13.Pressure relief vent 11 can import intercommunicating pore 12 with the gases at high pressure in the main valve plug 15.When inlet pressure is 1～6MPa, can both realize the steady opening and closing of valve.
Consult Fig. 1.On magnetic head holder 9, be fixed with transverse electric magnetic head 2 and vertical Electrical heads 6 through union cap 5.Union cap 5 is hold-doun nuts, on water pipeline, often adopts, and the technician can understand.Vertically in the Electrical heads 6 longitudinal spring 7 and vertical magnetic core 8 are being arranged, vertically magnetic core 8 is cylindrical.End at vertical magnetic core 8 is fixed with a plastic cement seal cover 10.Longitudinal spring 7 can promote vertical magnetic core 8, and vertically the bottom of magnetic core 8 is at the opening part of intercommunicating pore 12.Vertically magnetic core 8 moves back and forth and can open or close intercommunicating pore 12.Crossed strip 3 and horizontal magnetic core 4 are arranged in transverse electric magnetic head 2, and laterally magnetic core 4 is cylindrical, and crossed strip 3 can promote horizontal magnetic core 4.Consult Fig. 5 a.Laterally magnetic core 4 is with vertically magnetic core 8 is vertical each other.On the outer wall of vertical magnetic core 8, annular groove is arranged, the position of annular groove is when carrying on vertical magnetic core 8 when opening intercommunicating pore 12 fully, and laterally the end of magnetic core 4 can embed in the annular groove of vertical magnetic core 8, and horizontal magnetic core 4 can lock vertical magnetic core 8.
The course of work of electromagnetic pneumatic switch well valve of natural gas well:
Consult Fig. 1.During Open valve, give vertical Electrical heads 6 energisings, vertically Electrical heads 6 is inhaled vertical magnetic core 8; Horizontal magnetic core 4 in the transverse electric magnetic head 2 leans on crossed strip 3 elastic force to stretch out, and laterally insert in the cannelure of vertical magnetic core 8 end of magnetic core 4, with vertical magnetic core 8 lockings, vertically Electrical heads 6 outages.This moment, intercommunicating pore 12 was opened; Main valve plug 15 inner chambers are communicated with intercommunicating pore 12 and outlet passageway low pressure through pressure relief vent 11; Pressure in the main valve plug 15 descends rapidly; Pressure in the inlet channel is greater than main valve plug 15 chamber pressures, and pushed at high pressure main valve plug 15 moves up main valve plug 15, thereby opens valve.
During valve-off, 2 energisings of transverse electric magnetic head, transverse electric magnetic head 2 attracts the end of horizontal iron core 4 horizontal iron cores 4 in the annular groove of vertical magnetic core 8, to withdraw from, and is released state; Vertically magnetic core 8 moves downward under longitudinal spring 7 elastic force and action of gravity and cuts out intercommunicating pore 12,2 outages of transverse electric magnetic head.Owing to vertically bear upper reaches high pressure in Electrical heads 6 inner chambers, so intercommunicating pore 12 can be by tight closing.The high pressure draught of inlet channel makes main valve plug 15 cavity pressures and upstream pressure approaching through the inner chamber of the equilibrium pressure hole 17 entering main valve plugs 15 of main valve plug 15 at this moment, and under the elastic force effect of spring 14, main valve plug 15 moves downward, thereby cuts off air-flow.This moment, upstream pressure continued to raise, and continue air inlet through equilibrium pressure hole 13 in main valve plug 15 chambeies, thereby pressure was increasingly high, and main valve plug 15 is to pressing down tightlyer, and valve closing is tighter.
When stream pressure in the inlet channel of valve body 1 is crossed when low; Through RTU remote terminal control system get before valve body 1 air inlet port force value with set ultra under-pressure power value and compare; Force value before valve body 1 air inlet port is than setting ultra under-pressure power value hour; Through RTU control transverse electric magnetic head 2 is switched on, and then realize valve closing, accomplish ultra under-pressure and protect automatically.Through RTU receiving remote control system signal, control can realize remote switch well function to Electrical heads power supply completion valve switch.
Transverse electric magnetic head 2 is controlled being connected of system with vertical Electrical heads 6 with the RTU remote terminal; Transverse electric magnetic head 2 and vertical Electrical heads 6 are connected with battery (solar storage battery); The setting of ultra under-pressure power value, the technician can require to accomplish according to reality.
Claims (4)
1. an electromagnetic pneumatic switch well valve of natural gas well mainly is made up of valve body (1), transverse electric magnetic head (2), crossed strip (3), horizontal magnetic core (4), vertical Electrical heads (6), longitudinal spring (7), vertical magnetic core (8), magnetic head holder (9), valve gap (13), spring (14), main valve plug (15), and there are air inlet port and gas outlet in valve body (1) both sides; Air inlet port and gas outlet ability connecting line; In the air inlet port of valve body (1) inlet channel is arranged, outlet passageway is arranged in the gas outlet, between inlet channel and outlet passageway, valve core case is arranged; Cylindric main valve plug (15) is arranged in valve body (1); Main valve plug (15) can slide up and down in the centre bore of valve body (1), and main valve plug (15) baseplane is characterized in that on the valve core case between inlet channel and the outlet passageway: be fixed with valve gap (13) on main valve plug (15) top; Spring (14) is arranged in the main valve plug (15); Valve gap (13) is pressed in the top of spring (14), on main valve plug (15) wall, equilibrium pressure hole (17) is arranged, and equilibrium pressure hole (17) are communicated with the inlet channel of valve body (1); On valve body (1) and valve gap (13), intercommunicating pore (12) is arranged, opening part one end of intercommunicating pore (12) is in the outlet passageway of valve body (1); The opening part other end of intercommunicating pore (12) is in the top center position of valve gap (13); Top bit at valve gap (13) is equipped with protruding cylinder, and the cylinder outer wall has screw thread, is connected with magnetic head holder (9) on the cylinder outer wall thread; There is annular groove on the plane on cylinder; Pressure relief vent (11) is arranged on the valve gap (13), and the opening of pressure relief vent (11) one ends is in the cylindrical top annular groove of valve gap (13), and the other end opening of pressure relief vent (11) is in the bottom of valve gap (13);
Upward be fixed with transverse electric magnetic head (2) and vertical Electrical heads (6) through union cap (5) at magnetic head holder (9), vertically in the Electrical heads (6) longitudinal spring (7) and vertical magnetic core (8) arranged, vertically magnetic core (8) is a column shape; Longitudinal spring (7) can promote vertical magnetic core (8); Vertically the bottom of magnetic core (8) is at the opening part of intercommunicating pore (12), and vertically magnetic core (8) moves back and forth and can open or close intercommunicating pore (12), and crossed strip (3) and horizontal magnetic core (4) are arranged in transverse electric magnetic head (2); Laterally magnetic core (4) is a column shape; Crossed strip (3) can promote horizontal magnetic core (4), on the outer wall of vertical magnetic core (8), annular groove is arranged, and the position of this annular groove is when carrying on vertical magnetic core (8) when opening intercommunicating pore (12) fully; Laterally the end of magnetic core (4) can embed in the annular groove of vertical magnetic core (8), and laterally magnetic core (4) locks vertical magnetic core (8).
2. electromagnetic pneumatic switch well valve of natural gas well according to claim 1 is characterized in that: on main valve plug (15) wall, be with silk screen (18), silk screen (18) covers on equilibrium pressure hole (17).
3. electromagnetic pneumatic switch well valve of natural gas well according to claim 1 is characterized in that: between valve body (1) and main valve plug (15), be fixed with ring lining (16).
4. according to claim 1,2 or 3 described electromagnetic pneumatic switch well valve of natural gas well, it is characterized in that: the end at vertical magnetic core (8) is fixed with seal cover (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100866215A CN101575958B (en) | 2009-06-12 | 2009-06-12 | Electromagnetic pneumatic switch well valve for natural gas well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100866215A CN101575958B (en) | 2009-06-12 | 2009-06-12 | Electromagnetic pneumatic switch well valve for natural gas well |
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| Publication Number | Publication Date |
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| CN101575958A CN101575958A (en) | 2009-11-11 |
| CN101575958B true CN101575958B (en) | 2012-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100866215A Active CN101575958B (en) | 2009-06-12 | 2009-06-12 | Electromagnetic pneumatic switch well valve for natural gas well |
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| CN (1) | CN101575958B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787866B (en) * | 2010-02-25 | 2013-07-03 | 中国石油天然气股份有限公司 | Pilot-operated self-holding electromagnetic valve for gas well mouth |
| CN103291241B (en) * | 2012-11-26 | 2016-03-09 | 中国石油天然气股份有限公司 | Gas well remote high-pressure well switching device and control method |
| CN112943163B (en) * | 2021-01-12 | 2023-04-07 | 中国石油天然气股份有限公司 | Electromagnetic type middle-low pressure gas collection gas well remote control well switching device, system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB834837A (en) * | 1957-05-22 | 1960-05-11 | Calor Gas Distributing Company | Improvements in and relating to electromagnetic flame failure gas valves |
| CN2237157Y (en) * | 1995-11-07 | 1996-10-09 | 鞍山市盛尧电子仪器仪表有限公司 | Spring pneumatic electromagnetic valve |
| CN1170077C (en) * | 2002-05-24 | 2004-10-06 | 浙江大学 | Control valve of high-pressure pneumatic switch |
| CN2918908Y (en) * | 2006-04-21 | 2007-07-04 | 宁波星箭航天机械厂 | Straight-corner type explosion-proof electromagnetic valve for natural gas |
| CN201412116Y (en) * | 2009-06-12 | 2010-02-24 | 中国石油天然气股份有限公司 | Electromagnetic pneumatic switch well valve for natural gas well |
-
2009
- 2009-06-12 CN CN2009100866215A patent/CN101575958B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB834837A (en) * | 1957-05-22 | 1960-05-11 | Calor Gas Distributing Company | Improvements in and relating to electromagnetic flame failure gas valves |
| CN2237157Y (en) * | 1995-11-07 | 1996-10-09 | 鞍山市盛尧电子仪器仪表有限公司 | Spring pneumatic electromagnetic valve |
| CN1170077C (en) * | 2002-05-24 | 2004-10-06 | 浙江大学 | Control valve of high-pressure pneumatic switch |
| CN2918908Y (en) * | 2006-04-21 | 2007-07-04 | 宁波星箭航天机械厂 | Straight-corner type explosion-proof electromagnetic valve for natural gas |
| CN201412116Y (en) * | 2009-06-12 | 2010-02-24 | 中国石油天然气股份有限公司 | Electromagnetic pneumatic switch well valve for natural gas well |
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| Publication number | Publication date |
|---|---|
| CN101575958A (en) | 2009-11-11 |
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