CN204647843U - LNGV (liquefied natural gas vehicle) liquid-adding device - Google Patents
LNGV (liquefied natural gas vehicle) liquid-adding device Download PDFInfo
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- CN204647843U CN204647843U CN201520308638.1U CN201520308638U CN204647843U CN 204647843 U CN204647843 U CN 204647843U CN 201520308638 U CN201520308638 U CN 201520308638U CN 204647843 U CN204647843 U CN 204647843U
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Abstract
The utility model provides a kind of multi-functional LNGV (liquefied natural gas vehicle) liquid-adding device, this device comprises the equipment such as LNG immersed pump pond, immersed pump, LNG air-heating type gasifier, BOG EAG heater, flowmeter of unloading, LNGV liquid filler, PLC and industrial computer supervisory system, all reasonably device is on same chassis, by pneumatic or hand off valve, forms several functions passage every cold connecting line: realize from supercharging, immersed pump or both combine and unload LNG tank car; System is adjusted saturated; Be LNGV vehicle-mounted bottle liquid feeding from supercharging, immersed pump and reclaim gas; By the BOG that LNG tank car remnants and liquid filling station discharge, heated up by BOG EAG heater, enter BOG and reclaim the functions such as storage tank storage.Realize liquid filling station increasingly automated and intelligently store, liquid feeding and BOG reclaim, reach the effect of convenience, safety, economy, environmental protection, guarantee energy-saving and emission-reduction, avoid environmental pollution.
Description
Technical field
The utility model relates to a kind of LNGV (liquefied natural gas vehicle) liquid-adding device in resource and environment field.
Background technique
LNG Liquefied natural gas (LNG) is rock gas after dehydration, removing heavy hydrocarbon wherein and sour gas, adopt supercharging, throttling, expansion or additional cold refrigeration, cool in the ice chest entering-180 DEG C under 3.0MPa, become-138 DEG C, the LNG of 0.35MPa, LNG volume-diminished to one of six percentages of gaseous state, at pressure 0MPa, temperature-161.48 DEG C of state lower densities: gaseous state 1.2-1.5kg/m
3, liquid 430-460kg/m
3, convenient storage and transport more.
LNG is efficient, environmental protection, the easily energy, has been common people's common recognition.Relative coal, often burn 1.0 tons of LNG calorific values that suitable 3.98-7.37 tons of coals produce, can reducing emission of carbon dioxide 3.5 tons.So common people generally acknowledge that 21st century is the epoch that rock gas develops on a large scale.
LNG is in operation process, and because system can not definitely every cold, under ectocine, LNG can produce steam (BOG), if be directly discharged in air by the BOG of superpressure, greenhouse effect of its generation are 21 times of carbon dioxide; Foreign applications LNG country relatively early, has been equipped with corresponding BOG recovery plant all: as will the BOG of discharge by compression, refrigeration reliquefaction installation, more condensed LNG returns LNG storage tank and stores; Or compression, gasification inject low-pressure pipe network as Domestic Gas.
China LNG applies at the early-stage, in more than 1000 LNGV (liquefied natural gas vehicle) (LNGV) liquid filling station of now having gone into operation liquid filler, low temperature immersed pump and pump pond, air temperature type vaporizer, LNG storage tank, automatic detection and control system etc. purchase respectively all separately, install scattered, floor space large and lack this lack that, insufficiency, poor stability.More very that most of LNGV liquid filling station ignores BOG recycling, this just causes heavy economic losses: sell 40 tons of LNGV liquid filling stations an every day according to statistics, the BOG amount of discharging superpressure every day is 280-340kg, the loss amount of money reaches 3300-4100 yuan, and the loss of a year then reaches over one hundred ten thousand; And its greenhouse effect produced are then 21 times of carbon dioxide, more serious, anxious to be modified to the pollution of surrounding environment.
Model utility content
Technical problem to be solved in the utility model be to provide a kind of multiple functional, volume is little, the LNGV (liquefied natural gas vehicle) liquid-adding device that can move integrally.
For solving the problems of the technologies described above, the utility model provides a kind of LNGV (liquefied natural gas vehicle) liquid-adding device, comprise the immersed pump containing LNG immersed pump pond, LNG air-heating type gasifier, BOG EAG heater, LNGV liquid filler, and store up tank connected liquid, gas interface with LNG storage tank, tank car, recovery BOG;
LNGV liquid filler is provided with liquid feeding rifle, return-air rifle that storage bottle vehicle-mounted with LNGV is connected;
Service aisle is constructed as follows by being mutually tightly connected every cold LNG and BOG pipeline between the said equipment:
Vehicle passage is unloaded from supercharging, LNG pipeline connects the feed liquor interface of the liquid phase supercharging interface of LNG tank car, LNG air-heating type gasifier, LNG storage tank, LNG tank car flows out part LNG and heats up through LNG air-heating type gasifier, enter LNG tank car again, enter tank car for its supercharging, form pressure reduction in LNG tank car with in LNG storage tank, namely the LNG in LNG tank car transports in LNG storage tank by unloading vehicle passage from supercharging;
Pump unloads vehicle passage, and LNG pipeline connects the feed liquor interface of the interface of unloading of LNG tank car, immersed pump and LNG storage tank successively, from LNG tank car unload LNG that interface flows out, through immersed pump supercharging, transport in LNG storage tank by LNG storage tank feed liquor interface;
Adjust saturated passage, LNG pipeline connect LNG storage tank go out liquid interface, immersed pump and LNG air-heating type gasifier; LNG in LNG storage tank, go out liquid interface from LNG storage tank and enter, heat up through immersed pump supercharging, LNG air-heating type gasifier, then return in LNG storage tank, circulate the state that reaches capacity;
Liquid feeding return gas channel, LNG pipeline connects the liquid feeding rifle that LNG storage tank goes out liquid interface, immersed pump, liquid filler, LNG in LNG storage tank goes out liquid interface from LNG storage tank, and through immersed pump supercharging input liquid filler, LNG inputs in the vehicle-mounted storage bottle of LNGV by liquid feeding rifle by liquid filler; BOG pipeline connects the intake interface of liquid filler return-air rifle, BOG EAG heater and BOG storage tank, and in the vehicle-mounted storage bottle of LNGV, BOG is then by liquid filler return-air rifle, enters in BOG storage tank and store after BOG EAG heater;
Reclaim B0G passage, BOG pipeline connects the intake interface diffusing interface, BOG EAG heater, BOG storage tank, the air outlet hole place of LNG storage tank is provided with pressure regulator valve, after pressure in LNG storage tank is greater than the predetermined value of pressure regulator valve, the BOG of release in LNG storage tank enters in BOG storage tank store by diffusing interface after BOG EAG heater.
In order to clearer understanding technology contents of the present utility model, below by this LNGV (liquefied natural gas vehicle) liquid-adding device referred to as this device.
This device utilizes and unloads vehicle passage from supercharging and the LNG in LNG tank car can be fed through in LNG storage tank and store, LNG air-heating type gasifier is utilized to be boosted by LNG, after making to form certain pressure reduction between LNG tank car and LNG storage tank, export in LNG storage tank eventually through LNG storage tank liquid entering hole and store.
This device utilizes immersed pump to unload vehicle passage, also the LNG in LNG tank car can be exported in LNG storage tank through immersed pump pressurization and store.Because the vehicle-mounted LNG storage bottle of part LNGV is not with pressurized machine, and the liquid be filled in vehicle-mounted LNGV storage bottle must be saturation state, for this reason before giving LNGV automobile liquid feeding, first to the LNG in LNG storage tank carry out tune saturated after can to automobile liquid feeding, this LNGV (liquefied natural gas vehicle) liquid-adding device can utilize adjusts saturated passage, annotates the LNG of the tune saturation state in LNG storage tank in the vehicle-mounted LNG storage bottle of LNGV.
The liquid feeding return gas channel of this device utilizes immersed pump and liquid filler to carry out in liquid feeding process to the vehicle-mounted storage bottle of LNGV, the BOG in the vehicle-mounted LNG storage bottle simultaneously reclaimed, and by return-air rifle, the preheating of BOG EAG heater of liquid filler, is recycled in BOG storage tank.
LNG storage tank Daily boil-off-rate is approximately 0.15%, if the BOG produced exceedes storage tank setting working pressure, discharges not in time, LNG storage tank safety valve will be caused automatically to open emptying, befouling environment.Therefore the jointing of giving vent to anger of LNG storage tank is provided with pressure regulator valve, when BOG pressure in storage tank reaches pressure regulator valve setting, pressure regulator valve is opened automatically, the BOG of discharge is after the preheating of BOG EAG heater, enter BOG recycling can to store, the BOG that BOG storage tank reclaims, can be used as the fuel of water-heating boiler or water-bath type NG heater in the winter time, summer can enter urban pipe network and supplement Domestic Gas.
After adopting such structure, this device can require according to difference and different environment completes that LNG tank car is unloaded flexibly, LNG storage tank tune is saturated, LNGV liquid feeding, discharge the operation such as BOG recovery, and realize that taking up room of this device is little, compact structure, rationally distributed, multiple functional advantage, while performing every operation function, and can energy-saving and emission-reduction.
The pump pond of this device LNG immersed pump is provided with interface of giving vent to anger, and pump pond interface of giving vent to anger is connected with the intake interface of LNG storage tank by BOG pipeline, and pump pond jointing of giving vent to anger is provided with safety valve.
After adopting such structure, the BOG produced in immersed pump working procedure in pump pond can directly by entering storage tank pressure regulation with the gas phase pipeline of LNG storage tank, can be passed through the BOG of LNG storage tank pressure regulator valve discharge during superpressure, and enter in BOG storage tank through BOG EAG heater and reclaim.
The LNG immersed pump inlet and outlet of this device is all provided with one way stop peturn valve; After adopting such structure, in case LNG backflow.
Unload interface and LNG storage tank feed liquor interface of the LNG tank car of this device is arranged symmetrically with; After adopting such structure, convenient installation, reduces duct length, owing to being symplex structure, decreases the use of elbow in pipeline, reduce energy consumption in the work of this device, reduces operating cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of this device embodiment.
Fig. 2 is Fig. 1 left view.
Fig. 3 is Fig. 1 right elevation.
Fig. 4 is Fig. 1 schematic top plan view.
Embodiment
As shown in Figures 1 to 4
This device comprises the immersed pump 1, LNG air-heating type gasifier 2, BOG EAG heater 3, LNGV liquid filler 7, the control system that comprise immersed pump pond, and store up tank connected liquid, gas interface with LNG storage tank, tank car, recovery BOG, above-mentioned liquid, gas interface respectively:
For be connected with LNG storage tank intake interface 41, go out liquid interface 42, feed liquor interface 43;
Intake interface 51(for being connected with tank car gives vent to anger interface and the public interface of intake interface), liquid phase supercharging interface 52, interface 53 of unloading;
Interface 63 is diffused, for storing up tank connected intake interface 61 with BOG for what be connected with LNG storage tank with BOG EAG heater 3.
LNGV liquid filler 7 is provided with liquid feeding rifle, return-air rifle that storage bottle vehicle-mounted with LNGV is connected, LNGV liquid filler 7 is also provided with LNG stream gauge, and LNG stream gauge measures the LNG amount of input, and display quality (or volume number) and price on the control panel.
Service aisle is constructed as follows by being mutually tightly connected every cold LNG and BOG pipeline between the said equipment and interface:
Vehicle passage is unloaded from supercharging, LNG pipeline connects LNG tank car liquid phase supercharging interface 52, LNG air-heating type gasifier 2, LNG storage tank feed liquor interface 43, liquid is unloaded from supercharging to station inner storage tank for LNG tank car, then the intake interface 51 that LNG tank car air outlet hole and this device are used for being connected with tank car is connected, the liquid phase supercharging interface 52 LNG tank car outage and this device being used for being connected with tank car is connected, the LNG that tank car exports, LNG tank car is returned through LNG air-heating type gasifier 2 supercharging of vaporizing, its pressure higher than station in LNG storage tank pressure time, in LNG tank car, namely LNG flows into LNG storage tank by the pipeline that is connected with LNG storage tank and stores, and show its LNG amount of unloading by flowmeter of unloading.
Pump unloads vehicle passage, and LNG pipeline connects the feed liquor interface 43 of the interface 53 of unloading of LNG tank car, immersed pump 1 and LNG storage tank successively, from LNG tank car unload LNG that interface 53 flows out, through immersed pump 1 supercharging, transported in LNG storage tank by LNG storage tank feed liquor interface 43.
LNG tank car, when supercharging is unloaded, can be the vehicle-mounted storage bottle liquid feeding of LNGV simultaneously; LNG tank car also can be connected with LNG immersed pump pond, by the LNG after LNG immersed pump 1 supercharging, opens the control valve that to be connected with LNG storage tank, can enter LNG storage tank and store; Or open simultaneously be connected with LNG air-heating type gasifier 2 control valve, can vaporize, supercharging returns LNG tank car, under two kinds of function actings in conjunction, accelerate LNG and unload vehicle speed.
Adjust saturated passage, LNG pipeline connect LNG storage tank go out liquid interface 42, immersed pump 1 and LNG air-heating type gasifier 2; LNG in LNG storage tank, go out liquid interface 42 from LNG storage tank to enter, heat up through immersed pump 1 supercharging, LNG air-heating type gasifier 2, feed liquor interface 43 again through LNG storage tank returns in LNG storage tank, circulate the state that reaches capacity several times, saturation state is in: during pressure 0.752MPa, temperature-130 DEG C to guarantee to be filled with LNG in the vehicle-mounted storage bottle of LNGV; During pressure 0.956MPa, temperature-125 DEG C.
Liquid feeding return gas channel, LNG pipeline connects the liquid feeding rifle that LNG storage tank goes out liquid interface 42, immersed pump 1, liquid filler 7, LNG in LNG storage tank goes out liquid interface 42 from LNG storage tank, and through immersed pump 1 supercharging input liquid filler 7, LNG inputs in the vehicle-mounted storage bottle of LNGV by liquid feeding rifle by liquid filler 7; In the vehicle-mounted storage bottle of intake interface 61, LNGV of BOG pipeline connection liquid filler 7 return-air rifle, BOG EAG heater 3 and BOG storage tank, BOG is then by liquid filler 7 return-air rifle, enters in BOG storage tank and store after BOG EAG heater 3.
Reclaim B0G passage, BOG pipeline connects the intake interface 61 diffusing interface 63, BOG EAG heater 3, BOG storage tank, LNG storage tank top air outlet hole is provided with pressure regulator valve, after pressure in LNG storage tank is greater than the predetermined value of pressure regulator valve, the BOG of release in LNG storage tank enters in BOG storage tank store by diffusing interface 63 after BOG EAG heater 3.
This device superpressure gives off the remaining BOG of BOG, LNG tank car etc., all can be passed through this device BOG EAG heater 3 heats, heat up reach more than-20 DEG C, BOG recycling can be entered in storage.
The discharge pipe of all safety valves that this device pipeline is arranged all is connected with BOG EAG heater 3 aerating pipeline, and its BOG opening discharge all can enter the storage of BOG recovery storage tank after BOG EAG heater 3 heats up, all.
All safety valve is provided with, pressure, temperature transducer in each passage above-mentioned.
The control system of this device realizes system automation and intellectuality by PLG and industrial computer supervisory system.Reach the effect of safety, economy, environmental protection.Can the opening and closing of control LNG air-heating type gasifier 2, immersed pump 1 and liquid filler 7, and can realize that LNG tank car is unloaded from supercharging, immersed pump 1 is unloaded and combine unloading, adjusting the operations such as saturated, LNGV vehicle-mounted storage bottle liquid feeding return-air, BOG recovery to implement.
Corresponding site is equipped with safety valve, pneumatic, hand stop valve, pressure-temperature sensor between each equipment of this device and between pipeline; Corresponding function can be performed as required; The pressure of setting is automatically discharged, is reclaimed BOG, and to guarantee that LNGV liquid filling station is normally done business, safety valve then guarantees that storage tank, pipeline are unlikely to when working to exceed setting pressure, with support equipment safety.
The all devices of this device can be arranged in protection sled; security monitoring, alarm system and the emergency protections etc. such as low temperature leak, detonation, fire-fighting, production protection also should be provided with in protection sled sled; PLC control system and industrial computer supervisory system etc. are placed on same sled; realize increasingly automated and intelligent; reach the effect of safety, economy, environmental protection; guarantee storage capacity and the filling ability of liquid filling station, and reduce the gas discharging in running.
Above-described is only a kind of mode of execution of the present utility model; it should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from the utility model principle; can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.
Claims (4)
1. a LNGV (liquefied natural gas vehicle) liquid-adding device, it is characterized in that: comprise the immersed pump containing immersed pump pond, LNG air-heating type gasifier, BOG EAG heater, LNGV liquid filler, and store up tank connected liquid, gas interface with LNG storage tank, tank car, recovery BOG;
LNGV liquid filler is provided with liquid feeding rifle, return-air rifle that storage bottle vehicle-mounted with LNGV is connected;
Service aisle is constructed as follows by being mutually tightly connected every cold LNG and BOG pipeline between the said equipment:
Vehicle passage is unloaded from supercharging, LNG pipeline connects LNG tank car liquid phase supercharging interface, LNG air-heating type gasifier, LNG storage tank feed liquor interface, LNG tank car flows out part LNG and heats up through LNG air-heating type gasifier, enter LNG tank car again, enter tank car for its supercharging, form pressure reduction in LNG tank car with in LNG storage tank, namely the LNG in LNG tank car transports in LNG storage tank by unloading vehicle passage from supercharging;
Pump unloads vehicle passage, and LNG pipeline connects the feed liquor interface of the interface of unloading of LNG tank car, immersed pump and LNG storage tank successively, the LNG flowed out from the interface of unloading of LNG tank car, through immersed pump supercharging, transports in LNG storage tank by LNG storage tank feed liquor interface;
Adjust saturated passage, LNG pipeline connect LNG storage tank go out liquid interface, immersed pump and LNG air-heating type gasifier; LNG in LNG storage tank, go out liquid interface from LNG storage tank and enter, heat up through immersed pump supercharging, LNG air-heating type gasifier, then return in LNG storage tank, circulate the state that reaches capacity;
Liquid feeding return gas channel, LNG pipeline connects the liquid feeding rifle that LNG storage tank goes out liquid interface, immersed pump, liquid filler, LNG in LNG storage tank goes out liquid interface from LNG storage tank, and through immersed pump supercharging input liquid filler, LNG inputs in the vehicle-mounted storage bottle of LNGV by liquid feeding rifle by liquid filler; BOG pipeline connects the intake interface of liquid filler return-air rifle, BOG EAG heater and BOG storage tank, and in the vehicle-mounted storage bottle of LNGV, BOG is then by liquid filler return-air rifle, enters in BOG storage tank and store after BOG EAG heater;
Reclaim B0G passage, BOG pipeline connects the intake interface diffusing interface, BOG EAG heater, BOG storage tank, the air outlet hole place of LNG storage tank is provided with pressure regulator valve, after pressure in LNG storage tank is greater than the predetermined value of pressure regulator valve, the BOG of release in LNG storage tank enters in BOG storage tank store by diffusing interface after BOG EAG heater.
2. LNGV (liquefied natural gas vehicle) liquid-adding device according to claim 1, is characterized in that: the pump pond of LNG immersed pump is provided with interface of giving vent to anger, and pump pond interface of giving vent to anger is connected with the intake interface of LNG storage tank by BOG pipeline, and pump pond jointing of giving vent to anger is provided with safety valve.
3. LNGV (liquefied natural gas vehicle) liquid-adding device according to claim 1, is characterized in that: LNG immersed pump pump pond liquid inlet pipe and LNG immersed pump drain pipe place are all provided with one way stop peturn valve.
4. LNGV (liquefied natural gas vehicle) liquid-adding device according to claim 1, is characterized in that: unload interface and LNG storage tank feed liquor interface of described LNG tank car is arranged symmetrically with.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819378A (en) * | 2015-05-13 | 2015-08-05 | 安徽省鸿申压缩机有限公司 | Liquefied natural gas (LNG) automobile liquid adding device |
| CN106090599A (en) * | 2016-06-28 | 2016-11-09 | 沈军 | Hydrogen energy supply chain |
| CN108285121A (en) * | 2016-01-25 | 2018-07-17 | 王晶怡 | A kind of temperature control method |
| CN111795293A (en) * | 2019-04-09 | 2020-10-20 | 马格纳斯泰尔汽车技术两合公司 | Storage tank for cryogenic liquefied gas |
| CN112324643A (en) * | 2021-01-04 | 2021-02-05 | 湖南省特种设备检验检测研究院 | Vacuumizing method and vacuumizing device for low-temperature tank car |
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2015
- 2015-05-13 CN CN201520308638.1U patent/CN204647843U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819378A (en) * | 2015-05-13 | 2015-08-05 | 安徽省鸿申压缩机有限公司 | Liquefied natural gas (LNG) automobile liquid adding device |
| CN104819378B (en) * | 2015-05-13 | 2017-02-01 | 安徽省鸿申压缩机有限公司 | Liquefied natural gas (LNG) automobile liquid adding device |
| CN108285121A (en) * | 2016-01-25 | 2018-07-17 | 王晶怡 | A kind of temperature control method |
| CN106090599A (en) * | 2016-06-28 | 2016-11-09 | 沈军 | Hydrogen energy supply chain |
| CN111795293A (en) * | 2019-04-09 | 2020-10-20 | 马格纳斯泰尔汽车技术两合公司 | Storage tank for cryogenic liquefied gas |
| US11415084B2 (en) | 2019-04-09 | 2022-08-16 | Magna Steyr Fahrzeugtechnik Ag & Co Kg | Storage tank for cryogenic liquid gas |
| CN112324643A (en) * | 2021-01-04 | 2021-02-05 | 湖南省特种设备检验检测研究院 | Vacuumizing method and vacuumizing device for low-temperature tank car |
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