CN103574283A - Liquefied natural gas (LNG) emergency mobile filling device - Google Patents
Liquefied natural gas (LNG) emergency mobile filling device Download PDFInfo
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- CN103574283A CN103574283A CN201210252300.XA CN201210252300A CN103574283A CN 103574283 A CN103574283 A CN 103574283A CN 201210252300 A CN201210252300 A CN 201210252300A CN 103574283 A CN103574283 A CN 103574283A
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Abstract
The invention discloses a liquefied natural gas (LNG) emergency mobile filling device. The liquefied natural gas (LNG) emergency mobile filling device is skid-mounted equipment mainly composed of vehicle-mounted LNG cylinders; and comprises the vehicle-mounted LNG cylinders, a self-operated pressure reducing valve, a filling valve, a liquid adding flexible metal pipe and a liquid adding gun, an air-returning flexible metal pipe and an air-returning gun, an EAG heater, a flame arrester, a safety valve, other accessories, and the like. The size of the LNG emergency mobile filling device is small, so that the LNG emergency mobile filling device can be transported to any places, where filling of LNG is required, by a light pickup truck, and is used for LNG filling for LNG vehicles; and during the process of LNG filling, no external power sources or other power sources are required by the skid equipment, movement is convenient, and response for scheduling can be realized at any time. The LNG emergency mobile filling device is capable of providing rapid and safe LNG filling when it is impossible to start a LNG vehicle with an empty LNG vehicle-mounted cylinder, and it is also impossible to transport the LNG vehicle to a LNG filling station for LNG filling, wherein long-term inoperation or other reasons would lead to the empty LNG vehicle-mounted cylinder. The LNG emergency mobile filling device is capable of providing a best emergency solution plan which is flexible, convenient, safe, reliable, cheap and economical.
Description
Technical field
The present invention relates to a kind of emergent mobile filling apparatus for LNG automobile filling LNG fuel (LNG: LNG Liquefied natural gas, lower together).
Background technique
LNG fuel automobile is a kind of new-energy automobile, because its clean environment firendly, distance travelled is long, and filling time short (with respect to compressed natural gas) etc. advantage, is extensively promoted the use of in recent years.LNG is a kind of rock gas of low-temperature liquefaction, and its temperature under normal pressure is-162.5 ℃.LNG fuel automobile berth for a long time do not use or route change, due to the leakage heat of LNG gas cylinder the continuous reason such as gasification venting, there will be the LNG phenomenon of casting anchor that runs out of gas.At this moment need LNG fuel to transport to LNG automobile position, at the scene LNG is added in LNG automobile and just can start LNG automobile.Portable filling vehicle for the filling of LNG automobile is mainly tank car, semitrailer etc. now, all by portable storage tank, immersed pump, filling device and pipeline and valve etc., formed, equipment is complicated, price is high, high to using service condition, need to be equipped with large capacity power source etc. former thereby hindered the use of existing mobile filling vehicle.But mobile filling is mainly for a certain reason the gas in gas cylinder discharged and can not start ，Er LNG gas station and also can not this situation of aerating use in far place at LNG automobile.Be characterized in: 1, adding tolerance does not need too much, as long as can make LNG start DaoLNG gas station just can reach the requirement of emergent aerating; 2, automobile may at roadside, road, parking space etc. Anywhere, not have large power supply; 3, there is particularity, disperse, seldom occur, once set out the emergent filling of LNG and only have car of minority or several cars.At least there is following problem in the mobile filling automobile therefore using now: 1, equipment is large, generally all more than 5 sides, emergent once have more than is needed so much, causes the waste of gas product and operating cost; 2, investment is large, and a set of equipment is hundreds of thousands unit at least, at most units up to a million; 3, field condition is complicated, there is no power supply, and the pump that existing equipment arranges and filling device and other device power load are very large, are generally not less than 15KW, in most cases cannot electricity consumption work, be subject to the restriction of a lot of conditions.
Summary of the invention
The object of the invention is: the deficiency that overcomes background technique, provide a kind of simple and reasonable, capacity is little (generally at 500L～2000L not etc.), meet that emergent filling requires, cost is low, without pump without electricity consumption, can not be subject to the emergent LNG of a kind of LNG of condition restriction aerating to move filling apparatus whenever and wherever possible.
The emergent mobile filling apparatus (101) of LNG of the present invention stores low temperature LNG liquid by one or more LNG gas cylinders (102a, 102b) of manufacturing by mounted gas cylinder requirement, thereby has guaranteed safety, has also reduced cost; By a liquid-filling valve (V13), control liquid feeding, an operated pressure-reducing modulating valve (V12) is set and controls the pressure of mounted gas cylinder (103), the pressure that makes mounted gas cylinder (103) is all the time lower than the pressure 0.2MPa～0.4MPa of the emergent mobile filling apparatus (101) of a kind of LNG, thereby only with pressure filling, saved fluid filling pump, also avoided use power supply; Use again an EAG vaporizer (V18) to focus on the rock gas that safety valve diffuses and manually diffuses, make the natural gas temperature of diffusing only lower than 50 degrees Celsius of left and right of ambient temperature, thereby rock gas is risen and unlikely causing danger on high-altitude, guarantee safety; The emergent mobile filling apparatus (101) of LNG is filled rear gross weight and is no more than 600Kg, can use picking-up vehicle to transport safely, flexible.
The concrete technological scheme of the emergent mobile filling apparatus of LNG is, adopt one or several vehicle-mounted LNG gas cylinder (102a, 102b) storage low temperature LNG liquid, LNG gas cylinder (102a, 102b) is the LNG gas cylinder of installing and using on LNG automobile that aims at LNG configuration of automobiles, meets standard and the safety requirement of mobile device.It has LNG gas cylinder tap hole (204), LNG gas cylinder implementation of port (201), LNG gas cylinder pressure release relief opening (203), (202) four interfaces of safety valve emptying mouth, be respectively equipped with gas cylinder supercharging vaporizer (V9a, V9b), gas cylinder self-powering type boost pressure regulation valve (V8a, V8b), LNG gas cylinder safely bleeder (V3a, V3b, V5a, V5b), LNG storage pressure display unit (V4a, V4b), capacitance liquid level meter (V2a, V2b) and LNG gas cylinder bottle (V1a, V1b) etc. form.LNG gas cylinder bottle (V1a, V1b) is a chuck double layer construction that interior outer tank forms, in interlayer, there are multilayer reflection material and thermoinsulation material interval to be wound around, reflecting away radiation heat transmits, and interlayer is taken out to ultrahigh vacuum, avoid heat transfer by convection, add the heat conduction of the minimum interior outer tank of supporting structure of science, thereby make tank body have good cold insulation performance, having guaranteed that low temperature LNG liquid is stored in tank does not need discharge for 15 days.
A plurality of gas cylinder corresponding interfaces are parallel with one another, form a whole, to adapt to Different L NG capacity requirement.After LNG gas cylinder implementation of port (201) parallel connection, receive and fill on seat; After LNG gas cylinder pressure release relief opening (203) parallel connection, receive on return-air seat; After safety valve emptying mouth (202) is in parallel, by after EAG vaporizer (V18) heating, by flame trap (V19), diffuse; After LNG gas cylinder tap hole (204) is in parallel, by a liquid-filling valve (V13), be connected to topping up metallic hose and liquid feeding rifle (V14), by liquid feeding rifle, be connected with mounted gas cylinder implementation of port (403).Mounted gas cylinder pressure release relief opening (402), by return-air metallic hose and return-air rifle (V15), be connected with operated pressure-reducing modulating valve (V12), the pressure that guarantees gas cylinder on car is not less than setting pressure, the high saturation state pressure that setting pressure generally requires higher than automobile, to guarantee the stability and safety operation of car, also avoided filling liquid to adjust saturated processing; When mounted gas cylinder (103) pressure surpasses the setting pressure of operated pressure-reducing modulating valve (V12), by operated pressure-reducing modulating valve (V12), EAG vaporizer (V18), flame trap (V19) emptying, guarantee the safety of EAG gas purging.
Accompanying drawing explanation
Fig. 1 is the emergent mobile filling apparatus flow chart of a kind of LNG;
101-LNG meet an urgent need mobile filling apparatus 102a, 102b-LNG gas cylinder 103-mounted gas cylinder
201-LNG gas cylinder implementation of port 202-safety valve emptying mouth 203-LNG gas cylinder pressure release relief opening 204-LNG gas cylinder tap hole
301-device implementation of port 302-device pressure release relief opening 303-device liquid port 304-gas returning port 305-safety vent mouth
401-mounted gas cylinder tap hole 402-mounted gas cylinder pressure release relief opening 403-mounted gas cylinder implementation of port
Vla, V1b-LNG gas cylinder bottle V2a, V2b-capacitance liquid level meter V3a, V3b-LNG gas cylinder safely bleeder V4a, V4b-LNG storage pressure display unit V5a, V5b-gas cylinder safely bleeder V6a, V6b-liquid entering hole one-way valve V7a, V7b-gas cylinder pressure charging valve V8a, V8b-gas cylinder self-powering type boost pressure regulation valve V9a, V9b-gas cylinder supercharging vaporizer V10a, V10b-gas cylinder liquid port one-way valve V11a, V11b-gas cylinder liquid port carries only valve V12-operated pressure-reducing modulating valve V13-liquid-filling valve V14-topping up metallic hose and liquid feeding rifle V15-return-air metallic hose and return-air rifle V16, V17-purges Decompression valves V18-EAG vaporizer V19-flame trap V20a, V20b-gas cylinder return-air valve V20c-mounted gas cylinder return-air valve
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described, illustrates that the emergent LNG of LNG moves filling apparatus and how to work.
The supercharging of the LNG gas cylinder (102a, 102b) in the emergent mobile filling apparatus (101) of LNG, that the interior LNG cryogenic liquide of bottle is at dirty pressure charging valve (V7a, V7b), the gas cylinder self-powering type boost pressure regulation valve (V8a, V8b) through opening of effect of self gravitation, by gas cylinder supercharging vaporizer (V9a, V9b) heating and gasifying, enter again the gas-phase space of LNG gas cylinder (102a, 102b), thereby make LNG gas cylinder (102a, 102b) supercharging.Gas cylinder self-powering type boost pressure regulation valve (V8a, V8b) is self-acting valve, valve is setting pressure within the specific limits, when outlet pressure is more than or equal to valve setting pressure, valve closing, otherwise be opening state, so the pressure of LNG gas cylinder (102a, 102b) can be higher than the setting pressure of valve.The highest can being set under 1.6MPa of LNG gas cylinder worked.The emergent mobile filling apparatus (101) of LNG is pressurized to after setting pressure, by topping up metallic hose and liquid feeding rifle (V14) connection set liquid port (303) and mounted gas cylinder implementation of port (403), return-air metallic hose and return-air rifle (V15)) connect gas returning port (304) and mounted gas cylinder pressure release relief opening (402), thus the emergent mobile filling apparatus (101) of LNG is connected with the mounted gas cylinder (103) on car.Open mounted gas cylinder return-air valve (V20c), when on car, LNG storage pressure is higher than operated pressure-reducing modulating valve (V12) setting pressure of the emergent mobile filling apparatus (101) of LNG, on car, LNG gas cylinder will be by return-air metallic hose and return-air rifle (V15)), operated pressure-reducing modulating valve (V12), EAG vaporizer (V18), flame trap (V19), diffusion mouth (305) emptying, make mounted gas cylinder (103) pressure stability in the setting pressure of operated pressure-reducing modulating valve (V12), generally lower than emergent mobile filling apparatus (101) storage pressure 0.2～0.4MPa of LNG.At this moment open the liquid-filling valve (V13) of the emergent mobile filling apparatus (101) of LNG, because emergent mobile filling apparatus (101) pressure of LNG is higher than mounted gas cylinder (103) pressure, under the effect of pressure difference, the LNG liquid in the emergent mobile filling apparatus (101) of LNG is filled with to mounted gas cylinder (103).Mounted gas cylinder (103) is due to the carrying out of topping up, pressure will progressively raise, after reaching the pressure of emergent mobile filling apparatus (101) operated pressure-reducing modulating valve (V12) setting of LNG, operated pressure-reducing modulating valve (V12) is opened by EAG vaporizer (V18) again and is diffused, for mounted gas cylinder (103) release, until gas cylinder liquid level is closed topping up valve after being shown to specified position or requiring liquid level on car, stop topping up.In whole topping up process, can guarantee that the pressure of mounted gas cylinder (103) is not less than the setting pressure of operated pressure-reducing modulating valve (V12) like this, thereby guarantee that filling liquid is high saturation state liquid.Simultaneously, the emergent mobile filling apparatus (101) of LNG is along with the carrying out of topping up, liquid level and pressure drop, after the setting pressure lower than gas cylinder supercharging vaporizer (V9a, V9b), gas cylinder supercharging vaporizer (V9a, V9b) is opened automatically, for the gas cylinder supercharging of the emergent mobile filling apparatus (101) of LNG, make it to be stabilized in the setting pressure of gas cylinder supercharging vaporizer (V9a, V9b).After topping up completes, close the mounted gas cylinder return-air valve (V20c) of gas cylinder on car, unclamp liquid feeding rifle and return-air rifle.Metallic hose purges after pressure-relief valve V16, V17 release by abundant preheating and by opening, and takes off entrucking, and the work of unloading completes.
After having unloaded, the emergent mobile filling apparatus of LNG should be by driving to set out on a journey after pressure pressure release to safety pressure, to guarantee safety.
Claims (2)
1. the emergent mobile filling apparatus of LNG, is characterized in that: use one or several vehicle-mounted LNG gas cylinder (102a, 102b) to be connected in parallel as the memory device of LNG; And at drain, EAG vaporizer (V18) is set, flame trap (V19) carries out safety and diffuses.
2. the emergent mobile filling apparatus of LNG according to claim 1, it is characterized in that: be provided with a gas returning port (304), and at gas returning port (304), locate to arrange operated pressure-reducing modulating valve (V12), guarantee that the fluid temperature of liquid feeding is high saturation state liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210252300.XA CN103574283B (en) | 2012-07-20 | 2012-07-20 | A kind of LNG meets an urgent need mobile filling apparatus |
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| CN201210252300.XA CN103574283B (en) | 2012-07-20 | 2012-07-20 | A kind of LNG meets an urgent need mobile filling apparatus |
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| CN103574283A true CN103574283A (en) | 2014-02-12 |
| CN103574283B CN103574283B (en) | 2015-08-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327474A (en) * | 2014-08-14 | 2016-02-17 | 张家港中集圣达因低温装备有限公司 | Low-temperature storage transportation container and ice-blockage-prevention system of fire barrier of low-temperature storage transportation container |
| CN106224764A (en) * | 2016-08-31 | 2016-12-14 | 张家港富瑞特种装备股份有限公司 | Vehicular liquefied natural gas box differential pressure filling apparatus and method |
| DE102016004116A1 (en) | 2016-04-05 | 2017-10-05 | Linde Aktiengesellschaft | Filling a compressed gas tank |
| DE102016004122A1 (en) | 2016-04-05 | 2017-10-05 | Linde Aktiengesellschaft | Refueling a vehicle with hydrogen |
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2012
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Patent Citations (6)
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| US5582218A (en) * | 1994-05-27 | 1996-12-10 | Jeffrey P. Beale | Dispensing system for refueling transport containers with cryogenic liquids |
| JP2005030434A (en) * | 2003-07-08 | 2005-02-03 | Mikuni Kikai Kk | Liquefied gas filler |
| CN201162936Y (en) * | 2008-01-04 | 2008-12-10 | 刘亚东 | Liquefied natural gas feeder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327474A (en) * | 2014-08-14 | 2016-02-17 | 张家港中集圣达因低温装备有限公司 | Low-temperature storage transportation container and ice-blockage-prevention system of fire barrier of low-temperature storage transportation container |
| DE102016004116A1 (en) | 2016-04-05 | 2017-10-05 | Linde Aktiengesellschaft | Filling a compressed gas tank |
| DE102016004122A1 (en) | 2016-04-05 | 2017-10-05 | Linde Aktiengesellschaft | Refueling a vehicle with hydrogen |
| CN106224764A (en) * | 2016-08-31 | 2016-12-14 | 张家港富瑞特种装备股份有限公司 | Vehicular liquefied natural gas box differential pressure filling apparatus and method |
| CN106224764B (en) * | 2016-08-31 | 2019-05-28 | 张家港富瑞特种装备股份有限公司 | Vehicular liquefied natural air-box type differential pressure filling apparatus and method |
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| Publication number | Publication date |
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| CN103574283B (en) | 2015-08-26 |
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