CN102679149A - 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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- CN102679149A CN102679149A CN2012101703912A CN201210170391A CN102679149A CN 102679149 A CN102679149 A CN 102679149A CN 2012101703912 A CN2012101703912 A CN 2012101703912A CN 201210170391 A CN201210170391 A CN 201210170391A CN 102679149 A CN102679149 A CN 102679149A
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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 the 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 LNG Liquefied natural gas gas cylinder and feed flow must be realized through various control valves.In the background technique; Present LNG Liquefied natural gas gas cylinder both domestic and external manufacturer all is the Placement that adopts " distributing head-stainless-steel pipe-control valve-stainless-steel pipe-connecting head-exterior line " installing of its control valve; Promptly 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 links to each other with exterior line with jointing through 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 stainless-steel pipe and cut and weld and just can carry out the maintenance or the replacing of valve; The external long stainless-steel pipe of distributing head can cause the increase of heat transfer 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 vehicle-mounted gas cylinder; It moves to the 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 through the Stainless Steel Tube pipeline, and same the existence makes 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 one-way throttle valve, Emergeny Cutoff Valves, economic air throttle, supercharging pressure regulator valve and a plurality of stop valve on the distributing head through screw thread respectively, has cancelled the connecting tube between each valve and the distributing head, and structure is compact more; Can significantly reduce heat transmission; Reduce cost, can guarantee safe in utilization, easy to maintenance quick simultaneously reliably.
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 mouths that are spirally connected 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 through the direct integrated mouth that is spirally connected accordingly 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,
Be welded respectively in the distributing head side corresponding side opening and form an integral body of welding type screw socket I, welding type screw socket II, topping up joint and welding type screw socket III with distributing head; Welding type screw socket I, welding type screw socket II, topping up joint and welding type screw socket III corresponding respectively with distributing head on four interfaces of D, F, A, B be 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 inlet of stop valve II is connected with pressure pipeline, and the return-air mouth 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 inlet 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 through a straight coupling, and three interfaces in addition of cross fitting are connected with secondary safety valve, pressure gauge, primary safety valve for inner container respectively.
During LNG Liquefied natural gas (LNG) gas cylinder topping up:
Outside topping up pipe is connected in filled mouthful of M inlet of topping up safety check; Outside muffler is connected in the return-air mouth R outlet of stop valve II; Open the stop valve II, close stop valve I and stop valve III, LNG liquid gets into from filling a mouthful M inlet; This moment, the topping up safety check was opened automatically, and LNG liquid gets into gas cylinder through the topping up safety check from the A mouth.Along with charging into of LNG liquid, the part gaseous natural gas of bottle interior and liquid LNG coexistence exports through pressure gauge, primary safety valve for inner container, secondary safety valve to being connected in the muffler that stop valve II return-air mouth R exports, the recovering device that entering is outside from D.In the topping up process, the level meter sensor cluster detects the height of liquid level in the bottle, dynamically shows the variation of liquid level in the whole topping up process; When liquid level reached desired location, the topping up safety check cut out automatically, and 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 the gas pressure of the interior gaseous natural gas of bottle is higher than the setting pressure of economic air throttle; This moment, economic air throttle can be opened automatically, and one-way throttle valve is in closed condition, and rock gas gas gas phase pipeline in the gas cylinder is flowed out by the D outlet in the bottle; Arrive Emergeny Cutoff Valves through economic air throttle, stop valve III; Through Emergeny Cutoff Valves to J outlet, again through the J outlet be spirally connected be threaded onto vaporizer get into the use of buying car in installments of automobile-used vaporizer with the liquid pipeline, the interior rock gas of bottle this moment is preferentially confessed with gaseous form.
2) if the interior rock gas gas pressure of bottle is lower than the setting pressure of economic air throttle; This moment, economic air throttle was closed automatically; One-way throttle valve is opened, and liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head in the bottle, through one-way throttle valve, stop valve III to Emergeny Cutoff Valves; To J outlet, be threaded onto a use of buying car in installments after the vaporizing through vaporizer of vaporizer through what the J outlet was spirally connected through Emergeny Cutoff Valves again with the liquid pipeline.When the rock gas gas pressure in the liquid pipeline after the vaporization was too high, partial L NG liquid flowed back to gas cylinder from the throttling pore on the one-way throttle valve, keeps the pressure of the inside of a bottle balance.
3) if the interior rock gas gas pressure of bottle 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, and liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head in the bottle, partial L NG liquid through one-way throttle valve, stop valve III to Emergeny Cutoff Valves; To J outlet, be threaded onto a use of buying car in installments after the vaporizing through vaporizer of vaporizer through what the J outlet was spirally connected through Emergeny Cutoff Valves again with the liquid pipeline.Have in addition simultaneously partial L NG liquid through stop valve I, supercharging pressure regulator valve to the K outlet, after the vaporizer vaporization that outlet is spirally connected through K, from the boost port N inlet of the stop valve II entering gas cylinder that backflows, increase the interior gas pressure of gas cylinder through pressure pipeline.When gas pressure in the bottle was higher than the setting pressure of supercharging pressure regulator valve, the supercharging pressure regulator valve cut out automatically.
In topping up, the feed flow/air feed process, the level meter sensor cluster detects the height of liquid level in the bottle, and pressure gauge is monitored the variation in pressure of bottle interior gas in real time, and the double insurance that primary safety valve for inner container and secondary safety valve are formed can effectively guarantee gas cylinder and security of system.
The present invention compares the beneficial effect that is produced with existing technology:
1, through the integrated design of the valve of a plurality of standalone features is assemblied on the distributing head; A large amount of external connecting pipes road between having saved in the existing technology from the distributing head to the valve; Reduced heat transfer effectively, improved the use efficiency, low temperature cylinder valve field belongs to initiative at home.
2, owing to shortened the distance between valve and the valve, structurally significantly 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, 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 among 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 be spirally connected a mouthful 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 through direct integrated C, D, E, F, G, the B that the is bolted in distributing head 1 upper-end surface mouth that is spirally connected of screw thread, and the H that one-way throttle valve 2 is bolted in distributing head 1 upper-end surface is spirally connected mouthful and through throttle valve gland and black box 19 sealing and fixing.
A, the C soldering opening of distributing head 1 lower end surface connect the liquid pipe that is built in gas cylinder respectively, 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 corresponding side opening in distributing head 1 side and with distributing head 1, welding type screw socket I 5, welding type screw socket II 13, topping up joint 15 and welding type screw socket III 18 corresponding respectively with distributing head 1 on four interfaces of D, F, A, B be 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 vaporization backs through get into the use of buying car in installments of automobile-used vaporizer 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 the rock gas gas pressure is lower than the setting pressure of supercharging pressure regulator valve 17 in the bottle; Can increase the gas pressure in the gas cylinder with passing through gaseous natural gas after vaporizer 20 vaporization through this pressure pipeline from the boost port N inlet of the stop valve II 4 entering gas cylinder that backflows.
Stop valve II 4 is threadedly connected to welding type screw socket I 5, and the boost port N of stop valve II 4 tops enters the mouth and is bolted in the pressure pipeline connection that welding type screw socket III 18 K export, and the return-air mouth 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 inlet 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 through a straight coupling, and secondary safety valve 7, pressure gauge 8, primary safety valve for inner container 10 are connected to three interfaces in addition 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 inlet of topping up safety check 16; Outside muffler is connected in the return-air mouth R outlet of stop valve II 4; Open stop valve II 4, close stop valve I 3 and stop valve III 14, LNG liquid gets into from filling a mouthful M inlet; Topping up safety check 16 is opened automatically at this moment, and LNG liquid gets into gas cylinder through topping up safety check 16 from the A mouth.Along with charging into of LNG liquid, the part gaseous natural gas of bottle interior and liquid LNG coexistence exports through pressure gauge 8, primary safety valve for inner container 10, secondary safety valve 7 to being connected in the muffler that stop valve II 4 return-air mouth R export, the recovering device that entering is outside from D.In the topping up process, level meter sensor cluster 6 detects the height of liquid level in the bottle, dynamically shows the variation of liquid level in the whole topping up process; When liquid level reached desired location, topping up safety check 16 cut out automatically, and 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 the gas pressure of the interior gaseous natural gas of bottle 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; Rock gas gas gas phase pipeline in the gas cylinder is flowed out by the D outlet in the bottle, through economic air throttle 11, stop valve III 14 to Emergeny Cutoff Valves 12, through Emergeny Cutoff Valves 12 to J outlets; Again through J outlet be spirally connected be threaded onto vaporizer 20 get into the use of buying car in installments of automobile-used vaporizer with the liquid pipeline, the interior rock gas of bottle this moment is preferentially confessed with gaseous form.
2) if the interior rock gas gas pressure of bottle is lower than the setting pressure of economic air throttle 11; This moment, economic air throttle 11 was closed automatically; One-way throttle valve 2 is opened, and liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head 1 in the bottle, through one-way throttle valve 2, stop valve III 14 to Emergeny Cutoff Valves 12; To the J outlet, be threaded onto a use of buying car in installments after the vaporizing through vaporizer 20 of vaporizer 20 through what the J outlet was spirally connected through Emergeny Cutoff Valves 12 again with the liquid pipeline.When the rock gas gas pressure in the liquid pipeline after the vaporization was too high, partial L NG liquid flowed back to gas cylinder from the throttling pore on the one-way throttle valve 2, keeps the pressure of the inside of a bottle balance.
3) if the interior rock gas gas pressure of bottle 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 is opened with supercharging pressure regulator valve 17, and liquid LNG liquid pipe in the bottle is flowed out by the C outlet of distributing head 1 in the bottle, partial L NG liquid through one-way throttle valve 2, stop valve III 14 to Emergeny Cutoff Valves 12; To the J outlet, be threaded onto a use of buying car in installments after the vaporizing through vaporizer 20 of vaporizer 20 through what the J outlet was spirally connected through Emergeny Cutoff Valves 12 again with the liquid pipeline.Partial L NG liquid is arranged simultaneously in addition 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, from the boost port N inlet of the stop valve II 4 entering gas cylinder that backflows, increase the gas pressure in the gas cylinder through pressure pipeline.When gas pressure in the bottle was higher than the setting pressure of supercharging pressure regulator valve 17, supercharging pressure regulator valve 17 cut out automatically.
In topping up, the feed flow/air feed process; Level meter sensor cluster 6 detects the height of liquid level in the bottle; Dynamically show the variation of liquid level in the whole topping up process; Pressure gauge 8 is the variation in pressure of the interior gas of monitoring bottle in real time, and primary safety valve for inner container 10 can effectively guarantee gas cylinder and security of system with the double insurance that secondary safety valve 7 is formed.
Claims (3)
1. a Vehicular liquefied natural gas cylinder integrated valve 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 be spirally connected a mouthful 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 through direct integrated C, D, E, F, G, the B that is bolted in distributing head (1) the upper-end surface mouth that is spirally connected of screw thread, and the H that one-way throttle valve (2) is bolted in distributing head (1) upper-end surface is spirally connected mouthful and through throttle valve gland and black box (19) sealing and fixing;
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 the gas cylinder is bolted in welding type screw socket III (18) exports, and is threaded onto simultaneously in the 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 through a straight coupling, and secondary safety valve (7), pressure gauge (8), primary safety valve for inner container (10) are connected to three interfaces in addition of cross fitting (9);
A, the C soldering opening of distributing head (1) lower end surface connect the liquid pipe that is built in gas cylinder respectively, 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 inlet the top that it is characterized in that said stop valve II (4); There is return-air mouth R outlet the below of stop valve II (4); The N inlet 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 corresponding respectively with distributing head (1) on four interfaces of D, F, A, B 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 true CN102679149A (en) | 2012-09-19 |
| CN102679149B CN102679149B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103047537A (en) * | 2012-12-19 | 2013-04-17 | 湖北三江航天红阳机电有限公司 | LNG (Liquefied Natural Gas) explosion-proof gas supply control system of yacht |
| CN103398289A (en) * | 2013-08-07 | 2013-11-20 | 北京天海工业有限公司 | Multifunctional valve box |
| CN105042330A (en) * | 2015-08-27 | 2015-11-11 | 江南工业集团有限公司 | Multifunctional valve of liquefied natural gas cylinder and method for controlling liquid charging and discharging |
| CN105065904A (en) * | 2015-08-27 | 2015-11-18 | 江南工业集团有限公司 | Liquefied natural gas bottle for automobile |
| CN105156889A (en) * | 2015-08-20 | 2015-12-16 | 江南工业集团有限公司 | Liquefied natural gas gas-cylinder integration valve and control method thereof |
| 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 |
| CN106609909A (en) * | 2015-10-24 | 2017-05-03 | 河北斯玛特深冷技术有限公司 | LNG vehicle-mounted cylinder |
| CN113124316A (en) * | 2019-12-31 | 2021-07-16 | 陕西重型汽车有限公司 | Automobile-used LNG feed system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047537A (en) * | 2012-12-19 | 2013-04-17 | 湖北三江航天红阳机电有限公司 | LNG (Liquefied Natural Gas) explosion-proof gas supply control system of yacht |
| CN103398289A (en) * | 2013-08-07 | 2013-11-20 | 北京天海工业有限公司 | Multifunctional valve box |
| CN105156889A (en) * | 2015-08-20 | 2015-12-16 | 江南工业集团有限公司 | Liquefied natural gas gas-cylinder integration valve and control method thereof |
| CN105042330A (en) * | 2015-08-27 | 2015-11-11 | 江南工业集团有限公司 | Multifunctional valve of liquefied natural gas cylinder and method for controlling liquid charging and discharging |
| CN105065904A (en) * | 2015-08-27 | 2015-11-18 | 江南工业集团有限公司 | Liquefied natural gas bottle for automobile |
| 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 |
| CN106609909A (en) * | 2015-10-24 | 2017-05-03 | 河北斯玛特深冷技术有限公司 | LNG vehicle-mounted cylinder |
| CN113124316A (en) * | 2019-12-31 | 2021-07-16 | 陕西重型汽车有限公司 | Automobile-used LNG feed system |
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|---|---|
| CN102679149B (en) | 2013-11-06 |
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