A kind of gasification installation for LNGTechnical field
It unloads technical field more particularly to a kind of gasification installation for LNG the present invention relates to LNG.
Background technology
LNG is English liquefied natural gas（liquefied natural gas）Abbreviation.Main component is methane.LNG withoutColor, tasteless, nontoxic and non-corrosive, volume is about the 1/600 of same amount gaseous natural gas volume.LNG and gasoline, diesel oil and pressureContracting natural gas (CNG) is compared, and has the apparent advantages such as safe, economy is strong, negative environment effects are small, energy storage density is high.LNG is widely used in city bus, heavy truck and intercity bus as motor vehicle fuel, and matched LNG filling stationsIt synchronizes and is rapidly developed.Existing LNG filling stations or gasification station, which are unloaded, fill and filled, all uses immersed pump, there is throwingThe disadvantages such as money and operating cost are high, reliability is low.And the BOG generated in station and in LNG tank cars cannot be efficiently used, and be easyGenerate waste.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of gasification for LNG proposedDevice.
To achieve the goals above, present invention employs following technical solutions：
A kind of gasification installation for LNG, it is characterised in that：Including the first tank car interface, the second tank car interface being correspondingly arrangedWith third tank car interface, the second liquid phase that the second tank car interface unloads hose connection LNG tank cars by second exports, the second tank carInterface connects tank car booster by first pipe, and tank car booster connects third tank car interface, third slot by second pipeVehicle interface connects the gas phase entrances of LNG tank cars by third hose of unloading, and the first liquid-phase outlet of LNG tank cars unloads by firstHose connects the first tank car interface, and the first tank car interface connects feed liquor quick action emergency valve, feed liquor emergency cut-off by third pipelineValve by the 4th pipeline connect LNG storage tank into liquid interface；
The BOG interfaces of LNG tank cars connect BOG heaters by the 5th pipeline, motor-driven valve are additionally provided on the 5th pipeline, BOG addsHot device connects the intake interface of natural gas storage tank by the 6th pipeline, and natural gas storage tank passes through gas of using by oneself in the 7th pipeline docking stationThe BOG interfaces of pipeline, the LNG storage tank are also connected by the 8th pipeline with the 5th pipeline；
The liquid interface that goes out of LNG storage tank connects air temperature type vaporizer by the 12nd pipeline, and it is tight to be equipped with out liquid on the 12nd pipelineAnxious stop valve, air temperature type vaporizer connect water bath type vaporizer by the 13rd pipeline, and water bath type vaporizer passes through the 14th pipeRoad connects regulator, and regulator connects flowmeter by the 15th pipeline, and flowmeter is added smelly by the connection of the 16th pipelineMachine, odorization machine pass through the 17th pipeline connection tracheae network interface.
Preferably, the EAG interfaces of the LNG storage tank connect low-temperature safety valve by low temperature blow-down pipe, and low-temperature safety valve is logicalThe 9th pipeline connection EAG heaters are crossed, EAG heaters connect spark arrester by the tenth pipeline, and spark arrester passes through the 11st pipelineConnection emptying tower.
Preferably, the vent of the BOG interfaces of the LNG storage tank, natural gas storage tank is connected often by room temperature blow-down pipeWarm safety valve, room temperature safety valve are connected by the 12nd pipeline with the tenth pipeline.
Preferably, in the first pipe, second pipe, third pipeline, the 4th pipeline, the 5th pipeline, the 6th pipeline,Seven pipelines, the 8th pipeline, the 9th pipeline, the tenth pipeline, the 11st pipeline, the 12nd pipeline, the 13rd pipeline, the 14th pipeRoad, the 15th pipeline, the 16th pipeline, the 17th pipe ends are all provided with there are one corresponding control valve.
Preferably, it is equipped with bypass pipe in the water bath type vaporizer both sides, bypass pipe both ends are managed with the described 13rd respectivelyRoad and the 14th pipeline are connected, and ball valve is equipped on bypass pipe.
Preferably, the regulator also connects feed channel of using by oneself in the station by the 18th pipeline, in the 18th pipeCheck valve is additionally provided with by the arrive at a station direction of interior personal feed channel of regulator on road.
The advantage of the invention is that：A kind of low, stabilization of unloading of gasification installation energy consumption for LNG provided by the present invention,The BOG caused by supercharging for personal, safe and convenient in standing, passes through air temperature and water bath carburetor gasification LNG, energy consumption after processingLow, feed liquor is equipped with quick action emergency valve with outlet tube, and securely and reliably, water bath type vaporizer is equipped with by-pass line, in ambient temperatureWithout using not only about resource but also service life of equipment being extended, when the BOG in station after processing is not enough to supply in the case of heightShould stand it is interior with gas when, also being capable of use in depot after LNG gasification.
Description of the drawings
Fig. 1 is a kind of basic structure schematic diagram of gasification installation for LNG provided by the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, rightThe present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, andIt is not used in the restriction present invention.
As shown in Figure 1, a kind of gasification installation for LNG provided by the invention, it is characterised in that：Including what is be correspondingly arrangedFirst tank car interface 1, the second tank car interface 2 and third tank car interface 3, the first tank car interface 1, the second tank car interface 2 and thirdTank car interface 3 connects LNG tank cars 14 by corresponding hose.Second tank car interface 2 by second unload hose 1.2 connectThe second liquid phase of LNG tank cars 14 exports, and the second tank car interface 2 connects tank car booster 4, tank car booster by first pipe 214 connect third tank car interface 3 by second pipe 22, and third tank car interface 3 connects LNG tank cars by third hose 1.3 of unloading14 gas phase entrance.LNG in LNG storage tank 5 is again introduced into after being gasified by tank car booster 4 in LNG tank cars 14, leads to LNGPressure rise in tank car 14.
First liquid-phase outlet of LNG tank cars 14 by first unload hose 1.1 connect the first tank car interface 1, the first tank carInterface 1 connects feed liquor quick action emergency valve 12 by third pipeline 23, and feed liquor quick action emergency valve 12 connects LNG by the 4th pipeline 24Storage tank 5 into liquid interface 29.Pressure in the LNG tank cars 14 is more than the pressure in LNG storage tank 5, the LNG in LNG tank cars 14Entered in LNG storage tank 5 by third pipeline 23 and the 4th pipeline 24.Feed liquor quick action emergency valve 12 is used for emergency cut-off.
The liquid interface that goes out of LNG storage tank 5 connects air temperature type vaporizer 18 by the 12nd pipeline 32, on the 12nd pipeline 32It is equipped with out liquid quick action emergency valve 17, goes out liquid quick action emergency valve 17 for emergency cut-off.Air temperature type vaporizer 18 passes through the 13rd pipeRoad 33 connects water bath type vaporizer 19, and water bath type vaporizer 19 connects regulator 50 by the 14th pipeline 34.In the water19 both sides of bath vaporizer be equipped with bypass pipe 70,70 both ends of bypass pipe respectively with the 13rd pipeline 33 and the 14th pipeline 34It is connected, ball valve 70.1 is equipped on bypass pipe 70.
Regulator 50 connects flowmeter 51 by the 15th pipeline 35, and flowmeter 51 is added by the connection of the 16th pipeline 36Smelly machine 52, odorization machine 52 pass through the 17th pipeline 37 connection tracheae network interface 53.Gas after metering is by adding smelly processingAfter transport to station external application tracheae network interface 53.
The BOG interfaces of LNG tank cars 14 connect BOG heaters 7 by the 5th pipeline 25, and electricity is additionally provided on the 5th pipeline 25Dynamic valve 13.When unloading, motor-driven valve 13 is closed, and motor-driven valve 13 is opened after unloading, and the BOG in LNG tank cars 14 is defeated after processingTo natural gas storage tank 6.BOG heaters 7 connect the intake interface of natural gas storage tank 6 by the 6th pipeline 26, and natural gas storage tank 6 is logicalCross feed channel 10 of using by oneself in 27 docking station of the 7th pipeline, the BOG interfaces of the LNG storage tank 5 also by the 8th pipeline 28 with it is described5th pipeline 25 is connected.
The regulator 50 also connects feed channel 10 of using by oneself in the station by the 18th pipeline 38, in the 18th pipelineCheck valve 38.1 is additionally provided with by the arrive at a station direction of interior personal feed channel 10 of regulator 50 on 38.
The EAG interfaces of the LNG storage tank 5 connect low-temperature safety valve 15 by low temperature blow-down pipe 41, and low-temperature safety valve 15 is logicalCross the 9th pipeline 29 connection EAG heaters 8, EAG heaters 8 connect spark arrester 9 by the tenth pipeline 30, and spark arrester 9 passes through the11 pipelines 31 connection emptying tower 11.
The vent of the BOG interfaces of the LNG storage tank 5, natural gas storage tank 6 connects room temperature peace by room temperature blow-down pipe 42Full valve 16, room temperature safety valve 16 are connected by the 12nd pipeline 32 with the tenth pipeline 30.
In the first pipe 21, second pipe 22, third pipeline 23, the 4th pipeline 24, the 5th pipeline 25, the 6th pipeline26, the 7th pipeline 27, the 8th pipeline 28, the 9th pipeline 29, the tenth pipeline 30, the 11st pipeline 31, the 12nd pipeline the 32, the tenthThree pipelines 33, the 14th pipeline 34, the 15th pipeline 35, the 16th pipeline 36,37 both ends of the 17th pipeline are all provided with that there are one phasesThe control valve answered.