CN102679149B - Gas cylinder integrated valve for automotive liquefied natural gas - Google Patents
Gas cylinder integrated valve for automotive liquefied natural gas Download PDFInfo
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- CN102679149B CN102679149B CN2012101703912A CN201210170391A CN102679149B CN 102679149 B CN102679149 B CN 102679149B CN 2012101703912 A CN2012101703912 A CN 2012101703912A CN 201210170391 A CN201210170391 A CN 201210170391A CN 102679149 B CN102679149 B CN 102679149B
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Abstract
The invention relates to a gas cylinder integrated valve for automotive liquefied natural gas, which is characterized in that a distributing head is a porous cavity having a flat cylindrical shape, wherein a pipeline is reserved in the distributing head; a plurality of threaded interfaces are arranged on an upper end face of the distributing head; a one-way throttle valve, a stop valve I, a liquidometer sensor component, an economical gas throttle valve, an emergency cut-off valve, a stop valve III and a pressurizing pressure regulating valve are all sealed by using low-temperature resisting sealing elements and are directly integrated and connected with the corresponding threaded interfaces of the distributing head through threads; a connecting pipeline between the valve and the distributing head in the prior art is abandoned; three welded thread ports and liquid filling interfaces are respectively welded with side holes of the distributing head and are integrated with the distributing head; the liquid level height in the gas cylinder is detected by the liquidometer sensor component; the change in pressure is monitored by a pressure gage; and the safety of the gas cylinder and system is ensured by a double insurance which is formed by a first-level safety valve and a second-level safety valve. The gas cylinder integrated valve for automotive liquefied natural gas has the advantages of compact structure, excellent reliability and safety, lower cost, convenience in detecting and maintaining, and the like.
Description
Technical field
The present invention relates to a kind of Vehicular liquefied natural gas cylinder integrated valve, belong to low-temperature liquefaction natural gas applications technical field, it is adapted to topping up and the feed flow of Vehicular liquefied natural gas cylinder especially.
Background technique
LNG Liquefied natural gas (LNG) gas cylinder is a kind of cryogenic liquide insulated gas cylinder, and the topping up of liquefied natural gas bottle and feed flow must be realized by various control valves.In background technique, present liquefied natural gas bottle both domestic and external manufacturer is all the Placement that adopts " distributing head-stainless-steel pipe-control valve-stainless-steel pipe-connecting head-exterior line " installing of its control valve, namely at a plurality of jointings of distributing head many stainless-steel pipes that are welded, then stainless-steel pipe is welded to an end of control valve, the other end of valve is connected with exterior line with jointing by the stainless-steel pipe that is welded again.The major defect that this Placement exists in actual use is manufacturing and difficult in maintenance, in case particularly valve has damage, must carry out cutting and weld and just can carry out maintenance or the replacing of valve stainless-steel pipe, the external long stainless-steel pipe of distributing head can cause the increase that heat transmits simultaneously, is unfavorable for the thermal insulation of low temperature cylinder.Publication number is that the patent of CN101761776A discloses the distributing head on a kind of mounted gas cylinder, it moves to mid-rear portion in distributing head with the one-way valve of the anti-backflow in liquid entering hole place, it makes the speed of topping up be improved to a certain extent, but other control valve still is connected in distributing head by the Stainless Steel Tube pipeline, and same the existence made and defective difficult in maintenance, that the Cryo Heat Insulation effect is relatively poor.For overcoming the deficiency of above existence, Vehicular liquefied natural gas cylinder integrated valve is developed.
Summary of the invention
Technical problem to be solved by this invention is that a kind of Vehicular liquefied natural gas cylinder integrated valve will be provided, it directly is integratedly connected on distributing head by screw thread one-way throttle valve, Emergeny Cutoff Valves, economic air throttle, supercharging pressure regulator valve and a plurality of stop valve respectively, cancelled the connecting tube between each valve and distributing head, structure is compacter, can greatly reduce heat transmission, reduce costs, can guarantee reliably to use safety simultaneously, easy to maintenance quick.
The technological scheme that the present invention solves its technical problem employing is: it comprises distributing head, one-way throttle valve, stop valve I, stop valve II, welding type screw socket I, level meter sensor cluster, secondary safety valve, pressure gauge, cross fitting, primary safety valve for inner container, economic air throttle, Emergeny Cutoff Valves, welding type screw socket II, stop valve III, topping up joint, topping up safety check, supercharging pressure regulator valve, welding type screw socket III, throttle valve gland and black box, vaporizer
Distributing head is the inner porous cavity of reserving pipeline of oblate cylindricality, there are a plurality of threaded joints the upper-end surface of distributing head, one-way throttle valve, stop valve I, level meter sensor cluster, economic air throttle, Emergeny Cutoff Valves, stop valve III, supercharging pressure regulator valve are all with low temperature resistant Sealing sealing and respectively by the direct integrated corresponding threaded joint that is bolted in the distributing head upper-end surface of screw thread
Liquid pipe and gas phase pipeline that the soldering opening of distributing head lower end surface is welded and is built in gas cylinder,
Welding type screw socket I, welding type screw socket II, topping up joint and welding type screw socket III are welded respectively and form an integral body in the corresponding side opening in distributing head side and with distributing head, welding type screw socket I, welding type screw socket II, topping up joint and welding type screw socket III corresponding and four interfaces of D, F, A, B on distributing head respectively are connected
The J of welding type screw socket II outlet be bolted be threaded onto vaporizer use the liquid pipeline,
The K outlet of welding type screw socket III is bolted with the pressure pipeline that is threaded onto vaporizer,
The stop valve II is threadedly connected to welding type screw socket I, and the N entrance of stop valve II is connected with pressure pipeline, and the gas returning port R outlet of stop valve II can connect outside muffler,
The front end of topping up safety check is threadedly connected to the topping up joint, and filled mouthful of M entrance of topping up safety check rear end can connect outside topping up pipe,
An interface of cross fitting is threadedly connected to the lateral aperture of distributing head by a straight coupling, another three interfaces of cross fitting are connected with respectively secondary safety valve, pressure gauge, primary safety valve for inner container.
During LNG Liquefied natural gas (LNG) gas cylinder topping up:
Outside topping up pipe is connected in filled mouthful of M entrance of topping up safety check, outside muffler is connected in the gas returning port R outlet of stop valve II, open the stop valve II, close stop valve I and stop valve III, LNG liquid enters from filling a mouthful M entrance, this moment, the topping up safety check was opened automatically, and LNG liquid enters gas cylinder through the topping up safety check from the A mouth.Along with being filled with of LNG liquid, the part gaseous natural gas that coexists with liquid LNG in bottle from the D outlet through pressure gauge, primary safety valve for inner container, secondary safety valve to the muffler that is connected in stop valve II gas returning port R outlet, enter outside recovering device.In the topping up process, the level meter sensor cluster detects the height of liquid level in bottle, dynamically shows the variation of liquid level in whole topping up process, when liquid level reaches desired location, topping up safety check autoshutdown, topping up stops, close the stop valve II, remove external topping up pipe, muffler.
During LNG Liquefied natural gas (LNG) gas cylinder feed flow:
Open stop valve I, stop valve II and stop valve III,
1) if in bottle, the gas pressure of gaseous natural gas is higher than the setting pressure of economic air throttle, this moment, economic air throttle can be opened automatically, one-way throttle valve is in closed condition, in bottle, rock gas gas gas phase pipeline in the gas cylinder is flowed out by the D outlet, arrive Emergeny Cutoff Valves through economic air throttle, stop valve III, through Emergeny Cutoff Valves to J outlet, then through the J outlet be spirally connected be threaded onto vaporizer enter automobile-used vaporizer for vehicle with the liquid pipeline, a bottle interior rock gas is preferentially confessed with gaseous form at this moment.
2) if in bottle, the rock gas gas pressure is lower than the setting pressure of economic air throttle, this moment economic air throttle autoshutdown, one-way throttle valve is opened, in bottle, liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head, arrive Emergeny Cutoff Valves through one-way throttle valve, stop valve III, through Emergeny Cutoff Valves to J outlet, then through the J outlet be spirally connected be threaded onto vaporizer with the vaporization of liquid device for cleaning pipeline overflash device after for vehicle.When the rock gas gas pressure in using the liquid pipeline after vaporization was too high, part LNG liquid flowed back to gas cylinder from the throttling pore on one-way throttle valve, keeps the pressure of the inside of a bottle balance.
3) if in bottle, the rock gas gas pressure is lower than the setting pressure of supercharging pressure regulator valve, this moment, economic air throttle was closed, one-way throttle valve and supercharging pressure regulator valve are opened, in bottle, liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head, part LNG liquid arrives Emergeny Cutoff Valves through one-way throttle valve, stop valve III, through Emergeny Cutoff Valves to J outlet, then through the J outlet be spirally connected be threaded onto vaporizer with the vaporization of liquid device for cleaning pipeline overflash device after for vehicle.Separately have simultaneously part LNG liquid through stop valve I, supercharging pressure regulator valve to the K outlet, after the vaporizer vaporization that outlet is spirally connected through K, backflow from the boost port N entrance of stop valve II by pressure pipeline and enter gas cylinder, increase the interior gas pressure of gas cylinder.When gas pressure in bottle during higher than the setting pressure of supercharging pressure regulator valve, supercharging pressure regulator valve autoshutdown.
In topping up, feed flow/air feed process, the level meter sensor cluster detects the height of liquid level in bottle, and in pressure gauge Real-Time Monitoring bottle, the pressure of gas changes, and the double insurance that primary safety valve for inner container and secondary safety valve form can effectively guarantee gas cylinder and security of system.
The present invention compares the beneficial effect that produces with prior art:
1, be assemblied on a distributing head by the valve Integrated design with a plurality of standalone features, a large amount of external connecting pipes road between having saved in the prior art from the distributing head to the valve, effectively reduced the heat transmission, improved the use efficiency, low temperature cylinder valve field belongs to pioneering at home.
2, due to the distance that has shortened between valve and valve, structurally greatly reduced node, compact structure is reasonable, and manufacturing, installation and maintenance cost are low, detection, easy to maintenance quick.
3, it is little that it has wearing and tearing, long service life, the advantage such as reliability is high, Security is good.
Description of drawings
Fig. 1 is the structural representation of the Vehicular liquefied natural gas cylinder integrated valve of the present invention.
Fig. 2 is the structural representation of distributing head 1 in Fig. 1.
Fig. 3 is the P-P sectional view of Fig. 1.
Fig. 4 is the Q-Q sectional view of Fig. 1.
Fig. 5 is the schematic diagram of the Vehicular liquefied natural gas cylinder integrated valve of the present invention.
Embodiment
Below in conjunction with accompanying drawing, most preferred embodiment of the present invention is further described.
Referring to accompanying drawing 1～5, a kind of Vehicular liquefied natural gas cylinder integrated valve, it comprises distributing head 1, one-way throttle valve 2, stop valve I 3, stop valve II 4, welding type screw socket I 5, level meter sensor cluster 6, secondary safety valve 7, pressure gauge 8, cross fitting 9, primary safety valve for inner container 10, economic air throttle 11, Emergeny Cutoff Valves 12, welding type screw socket II 13, stop valve III 14, topping up joint 15, topping up safety check 16, supercharging pressure regulator valve 17, welding type screw socket III 18, throttle valve gland and black box 19, vaporizer 20.
Distributing head 1 is the inner porous cavity of reserving pipeline of oblate cylindricality, there are 7 threaded joint B, C, D, E, F, G, H in the upper-end surface of distributing head 1, stop valve I 3, level meter sensor cluster 6, economic air throttle 11, Emergeny Cutoff Valves 12, stop valve III 14, supercharging pressure regulator valve 17 be all with dual low temperature resistant Sealing sealing and respectively by direct integrated C, D, E, F, G, the B threaded joint that is bolted in distributing head 1 upper-end surface of screw thread, and one-way throttle valve 2 is bolted in the H threaded joint of distributing head 1 upper-end surface and fixing by throttle valve gland and black box 19 sealings.
A, the C soldering opening of distributing head 1 lower end surface connect respectively the liquid pipe that is built in gas cylinder, and the D soldering opening of distributing head 1 lower end surface connects the gas phase pipeline that is built in gas cylinder.
Welding type screw socket I 5, welding type screw socket II 13, topping up joint 15 and welding type screw socket III 18 are welded respectively and form an integral body in the distributing head 1 corresponding side opening in side and with distributing head 1, and welding type screw socket I 5, welding type screw socket II 13, topping up joint 15 and welding type screw socket III 18 corresponding and four interfaces of D, F, A, B on distributing head 1 respectively are connected.
What be threaded onto vaporizer 20 is bolted in the J outlet of welding type screw socket II 13 with the liquid pipeline, liquid LNG through vaporizer 20 vaporizations after by entering automobile-used vaporizer for vehicle with the liquid pipeline.
The pressure pipeline that is threaded onto vaporizer 20 is bolted in the K outlet of welding type screw socket III 18, when rock gas gas pressure in bottle during lower than the setting pressure of supercharging pressure regulator valve 17, can enter gas cylinder with backflowing from the boost port N entrance of stop valve II 4 through the gaseous natural gas after vaporizer 20 vaporization by this pressure pipeline, increase the gas pressure in gas cylinder.
Stop valve II 4 is threadedly connected to welding type screw socket I 5, and the boost port N entrance of stop valve II 4 tops and the pressure pipeline that is bolted in the 18 K outlets of welding type screw socket III are communicated with, and the gas returning port R outlet of stop valve II 4 belows can connect outside muffler.
The front end of topping up safety check 16 is threadedly connected to topping up joint 15, and filled mouthful of M entrance of topping up safety check 16 rear ends can connect outside topping up pipe.
An interface of cross fitting 9 is threadedly connected to the side opening of distributing head 1 side by a straight coupling, secondary safety valve 7, pressure gauge 8, primary safety valve for inner container 10 are connected to another three interfaces of cross fitting 9.
Referring to accompanying drawing 5, during LNG Liquefied natural gas (LNG) gas cylinder topping up:
Outside topping up pipe is connected in filled mouthful of M entrance of topping up safety check 16, outside muffler is connected in the gas returning port R outlet of stop valve II 4, open stop valve II 4, close stop valve I 3 and stop valve III 14, LNG liquid enters from filling a mouthful M entrance, topping up safety check 16 is opened automatically at this moment, and LNG liquid enters gas cylinder through topping up safety check 16 from the A mouth.Along with being filled with of LNG liquid, the part gaseous natural gas that coexists with liquid LNG in bottle from the D outlet through pressure gauge 8, primary safety valve for inner container 10, secondary safety valve 7 to the muffler that is connected in the 4 gas returning port R outlets of stop valve II, enter outside recovering device.In the topping up process, level meter sensor cluster 6 detects the height of liquid level in bottle, dynamically shows the variation of liquid level in whole topping up process, when liquid level reaches desired location, topping up safety check 16 autoshutdowns, topping up stops, close stop valve II 4, remove external topping up pipe, muffler.
During LNG Liquefied natural gas (LNG) gas cylinder feed flow:
Open stop valve I 3, stop valve II 4 and stop valve III 14,
1) if in bottle, the gas pressure of gaseous natural gas is higher than the setting pressure of economic air throttle 11, this moment, economic air throttle 11 can be opened automatically, one-way throttle valve 2 is in closed condition, in bottle, rock gas gas gas phase pipeline in the gas cylinder is flowed out by the D outlet, arrive Emergeny Cutoff Valves 12 through economic air throttle 11, stop valve III 14, through Emergeny Cutoff Valves 12 to J outlets, again through J outlet be spirally connected be threaded onto vaporizer 20 enter automobile-used vaporizer for vehicle with the liquid pipeline, a bottle interior rock gas is preferentially confessed with gaseous form at this moment.
2) if in bottle, the rock gas gas pressure is lower than the setting pressure of economic air throttle 11, this moment economic air throttle 11 autoshutdowns, one-way throttle valve 2 is opened, in bottle, liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head 1, arrive Emergeny Cutoff Valves 12 through one-way throttle valve 2, stop valve III 14, through Emergeny Cutoff Valves 12 to the J outlet, then through the J outlet be spirally connected be threaded onto vaporizer 20 with 20 vaporizations of liquid device for cleaning pipeline overflash device after for vehicle.When the rock gas gas pressure in using the liquid pipeline after vaporization was too high, part LNG liquid flowed back to gas cylinder from the throttling pore on one-way throttle valve 2, keeps the pressure of the inside of a bottle balance.
3) if in bottle, the rock gas gas pressure is lower than the setting pressure of supercharging pressure regulator valve 17, this moment, economic air throttle 11 was closed, one-way throttle valve 2 and supercharging pressure regulator valve 17 are opened, in bottle, liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head 1, part LNG liquid arrives Emergeny Cutoff Valves 12 through one-way throttle valve 2, stop valve III 14, through Emergeny Cutoff Valves 12 to the J outlet, then through the J outlet be spirally connected be threaded onto vaporizer 20 with 20 vaporizations of liquid device for cleaning pipeline overflash device after for vehicle.Part LNG liquid is separately arranged simultaneously through stop valve I 3,17 to the K outlets of supercharging pressure regulator valve, after vaporizer 20 vaporizations that outlet is spirally connected through K, backflow from the boost port N entrance of stop valve II 4 by pressure pipeline and enter gas cylinder, increase the gas pressure in gas cylinder.When gas pressure in bottle during higher than the setting pressure of supercharging pressure regulator valve 17, supercharging pressure regulator valve 17 autoshutdowns.
In topping up, feed flow/air feed process, level meter sensor cluster 6 detects the height of liquid level in bottle, dynamically show the variation of liquid level in whole topping up process, in pressure gauge 8 Real-Time Monitoring bottles, the pressure of gas changes, and the double insurance that primary safety valve for inner container 10 and secondary safety valve 7 form can effectively guarantee gas cylinder and security of system.
Claims (3)
1. Vehicular liquefied natural gas cylinder integrated valve, it is characterized in that it comprises distributing head (1), one-way throttle valve (2), stop valve I (3), stop valve II (4), welding type screw socket I (5), level meter sensor cluster (6), secondary safety valve (7), pressure gauge (8), cross fitting (9), primary safety valve for inner container (10), economic air throttle (11), Emergeny Cutoff Valves (12), welding type screw socket II (13), stop valve III (14), topping up joint (15), topping up safety check (16), supercharging pressure regulator valve (17), welding type screw socket III (18), throttle valve gland and black box (19), vaporizer (20),
Distributing head (1) is the inner porous cavity of reserving pipeline of oblate cylindricality, and there are 7 threaded joint B, C, D, E, F, G, H in the upper-end surface of distributing head (1);
Stop valve I (3), level meter sensor cluster (6), economic air throttle (11), Emergeny Cutoff Valves (12), stop valve III (14), supercharging pressure regulator valve (17) be all with dual low temperature resistant Sealing sealing and respectively by direct integrated C, D, E, F, G, the B threaded joint that is bolted in distributing head (1) upper-end surface of screw thread, and one-way throttle valve (2) is bolted in the H threaded joint of distributing head (1) upper-end surface and fixing by throttle valve gland and black box (19) sealing;
Welding type screw socket I (5), welding type screw socket II (13), topping up joint (15) and welding type screw socket III (18) are welded respectively in the side opening of distributing head (1), form an integral body with distributing head (1);
Stop valve II (4) is threadedly connected to welding type screw socket I (5), and the front end of topping up safety check (16) is threadedly connected to topping up joint (15), and the rear end of topping up safety check (16) can connect outside topping up pipe;
What connect exterior vehicle is bolted in the J outlet of welding type screw socket II (13) with the liquid pipeline, and the K that the pressure pipeline that increases gas pressure in gas cylinder is bolted in welding type screw socket III (18) exports, and is threaded onto simultaneously in vaporizer (20) with liquid pipeline and pressure pipeline;
An interface of cross fitting (9) is threadedly connected to the side opening of distributing head (1) side by a straight coupling, secondary safety valve (7), pressure gauge (8), primary safety valve for inner container (10) are connected to another three interfaces of cross fitting (9);
A, the C soldering opening of distributing head (1) lower end surface connect respectively the liquid pipe that is built in gas cylinder, and the D soldering opening of distributing head (1) lower end surface connects the gas phase pipeline that is built in gas cylinder.
2. Vehicular liquefied natural gas cylinder integrated valve according to claim 1, there is boost port N entrance the top that it is characterized in that described stop valve II (4), there is gas returning port R outlet the below of stop valve II (4), the N entrance of top is communicated with the pressure pipeline that is bolted in welding type screw socket III (18) K outlet, and the R outlet of below can connect outside muffler.
3. Vehicular liquefied natural gas cylinder integrated valve according to claim 1, it is characterized in that welding type screw socket I (5), welding type screw socket II (13), topping up joint (15) and welding type screw socket III (18) that distributing head (1) side is welded respectively corresponding and four interfaces of D, F, A, B on distributing head (1) be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101703912A CN102679149B (en) | 2012-05-29 | 2012-05-29 | Gas cylinder integrated valve for automotive liquefied natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101703912A CN102679149B (en) | 2012-05-29 | 2012-05-29 | Gas cylinder integrated valve for automotive liquefied natural gas |
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| Publication Number | Publication Date |
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| CN102679149A CN102679149A (en) | 2012-09-19 |
| CN102679149B true CN102679149B (en) | 2013-11-06 |
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| CN2012101703912A Expired - Fee Related CN102679149B (en) | 2012-05-29 | 2012-05-29 | Gas cylinder integrated valve for automotive liquefied natural gas |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047537B (en) * | 2012-12-19 | 2015-09-02 | 湖北三江航天红阳机电有限公司 | The explosion-proof air feed control system of a kind of yacht LNG |
| CN103398289B (en) * | 2013-08-07 | 2015-01-28 | 北京天海工业有限公司 | Multifunctional valve box |
| CN105156889B (en) * | 2015-08-20 | 2017-09-22 | 江南工业集团有限公司 | A kind of liquefied natural gas bottle integrated valve body and its control method |
| CN105042330B (en) * | 2015-08-27 | 2017-06-06 | 江南工业集团有限公司 | A kind of liquefied natural gas bottle multifunction valve and control topping up, the method for going out liquid |
| CN105065904B (en) * | 2015-08-27 | 2017-06-23 | 江南工业集团有限公司 | A kind of automobile liquefied natural gas bottle |
| CN106609906A (en) * | 2015-10-24 | 2017-05-03 | 河北斯玛特深冷技术有限公司 | Novel LNG vehicle-mounted cylinder |
| CN106609909B (en) * | 2015-10-24 | 2019-10-11 | 河北斯玛特深冷技术有限公司 | LNG mounted gas cylinder |
| CN113124316A (en) * | 2019-12-31 | 2021-07-16 | 陕西重型汽车有限公司 | Automobile-used LNG feed system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2479232Y (en) * | 2001-04-30 | 2002-02-27 | 冀为民 | Integrated valve for vehicle |
| CN2482625Y (en) * | 2001-06-22 | 2002-03-20 | 陈祥州 | Liquefied gas steel cylinder integrated valve for automotive vehicle |
| CN1492175A (en) * | 2002-10-25 | 2004-04-28 | 上海中油企业发展有限公司 | Petroleum liquefied gas cylinder integrated valve for motor vehicle |
| CN2620164Y (en) * | 2003-03-07 | 2004-06-09 | 陈利祥 | Liquefied gas cylinder integrated valve assembly for vehicle |
| CN201133566Y (en) * | 2007-11-12 | 2008-10-15 | 诸暨市万隆机械有限公司 | Motor vehicle integrating valve |
| KR20110007641A (en) * | 2009-07-17 | 2011-01-25 | 유세환 | Solid mask |
| CN202812791U (en) * | 2012-05-29 | 2013-03-20 | 江南工业集团有限公司 | Gas cylinder integrated valve for automotive liquefied natural gas |
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Granted publication date: 20131106 Termination date: 20180529 |