CN205781982U - LNG filling station is unloaded without pump, is filled and charging system - Google Patents
LNG filling station is unloaded without pump, is filled and charging system Download PDFInfo
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- CN205781982U CN205781982U CN201620471669.3U CN201620471669U CN205781982U CN 205781982 U CN205781982 U CN 205781982U CN 201620471669 U CN201620471669 U CN 201620471669U CN 205781982 U CN205781982 U CN 205781982U
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- lng
- storage tank
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- nitrogen
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Abstract
This utility model LNG filling station unloads without pump, fill and charging system relates to a kind of filing provision being applicable to LNG filling station.Its purpose is to provide the LNG filling station that a kind of operating cost is low, reliability is high to unload without pump, fill and charging system.LNG filling station in this utility model includes at least one LNG storage tank, BOG liquefying plant, the first supercharging gasifier and gas-liquid metering device without pump unloading system.LNG filling station in this utility model includes at least one LNG storage tank, BOG liquefying plant, filling machine and the 3rd supercharging gasifier without pump loading system.LNG filling station in this utility model includes at least one LNG storage tank, BOG liquefying plant, the first supercharging gasifier, gas-liquid metering device, the 3rd supercharging gasifier and filling machine without pump charging system.
Description
Technical field
This utility model relates to liquefied natural gas filling field, particularly relates to one and is applicable to liquefied natural gas
The filing provision of filling station.
Background technology
Liquefied natural gas (LNG) is the energy of a kind of clean and effective, with gasoline, diesel oil and compressed natural gas (CNG)
Compare, have that safety is high, economy is strong, negative environment effects is little, the high obvious advantage of energy storage density.LNG
As motor vehicle fuel, it is widely used in city bus, heavy truck and intercity big bus, and matched LNG
Filling station also synchronizes to be rapidly developed.Existing LNG filling station is unloaded, fills and is filled all to use and dives
, there is investment and the shortcoming such as operating cost is high, reliability is low in liquid pump.
Utility model content
The technical problems to be solved in the utility model is to provide the LNG that a kind of operating cost is low, reliability is high and adds
Note station is unloaded without pump, is filled and charging system.
LNG filling station in this utility model is without pump unloading system, including at least one LNG storage tank, BOG
Liquefying plant, the first supercharging gasifier and gas-liquid metering device,
Described gas-liquid metering device the first outfan is connected with LNG storage tank, and first input end is connected to into filling
The LNG transfer cask in LNG transport vehicle unloaded in station, is used for measuring the LNG amount of unloading；
Described gas-liquid metering device the second outfan is connected with BOG liquefying plant, the second input be connected to into
The LNG transfer cask in LNG transport vehicle that filling station is unloaded, is used for measuring the BOG amount of unloading；
It is connected by gas phase pipeline between described BOG liquefying plant and LNG storage tank, for LNG storage tank
The liquefaction of middle BOG, and reduce LNG storage tank internal gas pressure；
Liquid pipe in described BOG liquefying plant is connected with LNG storage tank, after being liquefied by BOG
LNG is recycled to LNG storage tank；
Described first supercharging gasifier is connected with LNG transfer cask, to LNG transfer cask during being used for unloading
Supercharging, makes to be formed between LNG transfer cask and LNG storage tank pressure reduction.
LNG filling station in this utility model includes without pump unloading system, wherein said BOG liquefying plant
Liquid nitrogen storage tank, the second supercharging gasifier, heat exchanger and LNG reclaim storage tank,
Described heat exchanger gas feed is defeated with described LNG storage tank gas outlet and gas-liquid metering device second respectively
Going out end to connect, liquid outlet reclaims storage tank with described LNG and is connected, for being liquefied by BOG cold by liquid nitrogen
Coagulate for LNG, and be recycled to LNG and reclaim in storage tank；
Described LNG reclaims the outlet of storage tank liquid pipe and is connected with LNG storage tank；
Described liquid nitrogen storage tank, is condensed to heat exchanger for liquefying BOG by pipeline conveying liquid nitrogen；
Described second supercharging gasifier is connected with liquid nitrogen storage tank, for liquid nitrogen storage tank is carried out supercharging, makes liquid nitrogen
Heat exchanger can be delivered to by pipeline.
LNG filling station in this utility model, without pump unloading system, also includes nitrogen heater and nitrogen buffering
Tank,
Described nitrogen heater is connected with the heat exchanger nitrogen outlet in BOG liquefying plant, is used for making the most complete
The liquid nitrogen of gasification heats up and gasifies；
Described nitrogen buffer tank is connected with nitrogen heater, after the recovery of nitrogen tail gas, described gasification
Nitrogen can be used for stand interior instrument wind, air filling gun purging, the dilution leakage purposes such as gas and fire extinguishing.
LNG filling station in this utility model is without pump loading system, including at least one LNG storage tank, BOG
Liquefying plant, filling machine and the 3rd supercharging gasifier,
Described filling machine first input end is connected with LNG storage tank, and the first outfan is connected with vehicle-mounted bottle, is used for
Metering vehicle-mounted bottle LNG adding amount；
Described filling machine the second input is connected with vehicle-mounted bottle, and the second outfan is connected with BOG liquefying plant,
For measuring vehicle-mounted bottle BOG yield；
The outlet of described BOG liquefying plant liquid pipe is connected to LNG storage tank, for the BOG in vehicle-mounted bottle
Liquefaction is recycled in LNG storage tank；
Described 3rd supercharging gasifier is connected with LNG storage tank, for LNG storage tank is carried out supercharging, makes LNG
Pressure reduction is formed between storage tank and vehicle-mounted bottle.
LNG filling station in this utility model includes without pump loading system, wherein said BOG liquefying plant
Liquid nitrogen storage tank, the second supercharging gasifier, heat exchanger and LNG reclaim storage tank,
Described heat exchanger gas feed connects with described LNG storage tank gas outlet and filling machine the second outfan respectively
Connecing, liquid outlet reclaims storage tank with described LNG and is connected, for BOG liquefaction being condensed into LNG by liquid nitrogen,
And be recycled in LNG recovery storage tank；
Described LNG reclaims the outlet of storage tank liquid pipe and is connected with LNG storage tank；
Described liquid nitrogen storage tank, is condensed to heat exchanger for liquefying BOG by pipeline conveying liquid nitrogen；
Described second supercharging gasifier is connected with liquid nitrogen storage tank, for liquid nitrogen storage tank is carried out supercharging, makes liquid nitrogen
Heat exchanger can be delivered to by pipeline.
LNG filling station in this utility model, without pump loading system, also includes nitrogen heater and nitrogen buffering
Tank,
Described nitrogen heater is connected with the heat exchanger nitrogen outlet in BOG liquefying plant, is used for making the most complete
The liquid nitrogen of gasification heats up and gasifies；
Described nitrogen buffer tank is connected with nitrogen heater, after the recovery of nitrogen tail gas, described gasification
Nitrogen can be used for stand interior instrument wind, air filling gun purging, the dilution leakage purposes such as gas and fire extinguishing.
LNG filling station in this utility model is without pump charging system, including at least one LNG storage tank, BOG
Liquefying plant, the first supercharging gasifier, gas-liquid metering device, the 3rd supercharging gasifier and filling machine,
Described gas-liquid metering device the first outfan is connected with LNG storage tank, and first input end is connected to into filling
The LNG transfer cask in LNG transport vehicle unloaded in station, is used for measuring the LNG amount of unloading；
Described gas-liquid metering device the second outfan is connected with BOG liquefying plant, the second input be connected to into
The LNG transfer cask in LNG transport vehicle that filling station is unloaded, is used for measuring the BOG amount of unloading；
It is connected by gas phase pipeline between described BOG liquefying plant and LNG storage tank, for LNG storage tank
The liquefaction of middle BOG, and reduce LNG storage tank internal gas pressure；
Liquid pipe in described BOG liquefying plant is connected with LNG storage tank, after being liquefied by BOG
LNG is recycled to LNG storage tank；
Described first supercharging gasifier is connected with LNG transfer cask, is used for the process of unloading and increases LNG transfer cask
Pressure, makes to be formed between LNG transfer cask and LNG storage tank pressure reduction；
Described filling machine first input end is connected with LNG storage tank, and the first outfan is connected with vehicle-mounted bottle, is used for
Metering vehicle-mounted bottle LNG adding amount；
Described filling machine the second input is connected with vehicle-mounted bottle, and the second outfan is connected with BOG liquefying plant,
For measuring vehicle-mounted bottle BOG yield；
Described 3rd supercharging gasifier is connected with LNG storage tank, for LNG storage tank is carried out supercharging, makes LNG
Pressure reduction is formed between storage tank and vehicle-mounted bottle.
LNG filling station in this utility model is without pump charging system, including two LNG storage tank, and wherein two
Individual LNG storage tank is respectively the first LNG storage tank and the second LNG storage tank；
Wherein, described gas-liquid metering device the first outfan and the first LNG storage tank connect, and first input end is even
It is connected to the LNG transfer cask (3) in the LNG transport vehicle unloaded into filling station, is used for measuring LNG and unloads
Amount；
Described gas-liquid metering device the second outfan is connected with BOG liquefying plant, the second input be connected to into
The LNG transfer cask in LNG transport vehicle that filling station is unloaded, is used for measuring the BOG amount of unloading；
Connected by gas phase pipeline between described BOG liquefying plant and the first LNG storage tank, for first
The liquefaction of BOG in LNG storage tank, and reduce the first LNG storage tank internal gas pressure；
Liquid pipe and the first LNG storage tank in described BOG liquefying plant connect, for being liquefied by BOG
After LNG be recycled to the first LNG storage tank；
Described first supercharging gasifier is connected with LNG transfer cask, is used for the process of unloading and increases LNG transfer cask
Pressure, makes to be formed between LNG transfer cask and the first LNG storage tank pressure reduction；
Described filling machine first input end and the second LNG storage tank connect, the first outfan and vehicle-mounted bottle (10)
Connect, be used for measuring vehicle-mounted bottle LNG adding amount；
Described filling machine the second input is connected with vehicle-mounted bottle, and the second outfan is connected with BOG liquefying plant,
For measuring vehicle-mounted bottle BOG yield；
Described BOG liquefying plant liquid-phase outlet is connected to the second LNG storage tank, for the BOG in vehicle-mounted bottle
Liquefaction is recycled in the second LNG storage tank；
Described 3rd supercharging gasifier and the second LNG storage tank connect, for increasing the second LNG storage tank
Pressure, makes to be formed between the second LNG storage tank and vehicle-mounted bottle pressure reduction.
LNG filling station in this utility model includes without pump charging system, wherein said BOG liquefying plant
Liquid nitrogen storage tank, the second supercharging gasifier, heat exchanger and LNG reclaim storage tank,
Described heat exchanger gas feed respectively with described first LNG storage tank gas outlet, gas-liquid metering device
Two outfans and filling machine the second outfan connect, and liquid outlet reclaims storage tank with described LNG and is connected, and uses
In by liquid nitrogen, BOG liquefaction being condensed into LNG, and it is recycled to LNG and reclaims in storage tank；
Described LNG reclaims the outlet of storage tank liquid pipe and connects with the first LNG storage tank and the second LNG storage tank respectively
Connect；
Described liquid nitrogen storage tank, is condensed to heat exchanger for liquefying BOG by pipeline conveying liquid nitrogen；
Described second supercharging gasifier is connected with liquid nitrogen storage tank, for liquid nitrogen storage tank is carried out supercharging, makes liquid nitrogen
Heat exchanger can be delivered to by pipeline.
LNG filling station in this utility model, without pump charging system, also includes nitrogen heater and nitrogen buffering
Tank,
Described nitrogen heater is connected with the heat exchanger nitrogen outlet in BOG liquefying plant, is used for making the most complete
The liquid nitrogen of gasification heats up and gasifies；
Described nitrogen buffer tank is connected with nitrogen heater, after the recovery of nitrogen tail gas, described gasification
Nitrogen can be used for stand interior instrument wind, air filling gun purging, the dilution leakage purposes such as gas and fire extinguishing.
This utility model LNG filling station unloads without pump, fill and charging system utilizes pressure reduction to complete to unload and add
Note, during unloading, first passes through BOG liquefying plant and carries out liquefying and returning by the BOG in LNG storage tank
Receive and reclaim storage tank to LNG, reduce the pressure in LNG storage tank；The first supercharging gasifier is utilized to increase afterwards
Pressure in LNG transfer cask, the pressure differential between LNG transfer cask and LNG storage tank reaches certain numerical value
Time, the BOG in LNG transfer cask is transported in LNG storage tank under the effect of the pressure.After unloading,
BOG in LNG transfer cask is put to BOG liquefying plant condensation liquefaction and is recycled to LNG recovery storage
In tank.In filling process, opening the 3rd supercharging gasifier, the pressure in regulation LNG storage tank, by vehicle-mounted
BOG in Ping is put by filling machine and is condensed and recycled to BOG liquefying plant in LNG recovery storage tank,
Reduce the pressure in vehicle-mounted bottle；When pressure differential between LNG storage tank and vehicle-mounted bottle reaches certain numerical value, LNG
LNG in storage tank is filled in vehicle-mounted bottle under the effect of the pressure.From the foregoing, it will be observed that unload whole and add
During note, will not use immersed pump, therefore, this utility model operating cost is low, reliability is high.
The utility model is described in further detail below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 be in this utility model LNG filling station without the structural representation of pump unloading system；
Fig. 2 be in this utility model LNG filling station without the structural representation of pump loading system；
Fig. 3 is the structure that in this utility model, LNG filling station includes a LNG storage tank without pump charging system
Schematic diagram；
Fig. 4 is the structure that in this utility model, LNG filling station includes two LNG storage tank without pump charging system
Schematic diagram；
Fig. 5 is to use the LNG filling station in this utility model without the process chart of pump charging system.
Detailed description of the invention
As it is shown in figure 1, the LNG filling station in this utility model is without pump unloading system, including at least one LNG
Storage tank 1, BOG liquefying plant, the first supercharging gasifier 11 and gas-liquid metering device 12.
Described gas-liquid metering device 12 first outfan is connected with LNG storage tank 1, and first input end is connected to
Enter the LNG transfer cask 3 in the LNG transport vehicle that filling station is unloaded, be used for measuring the LNG amount of unloading.Described
Gas-liquid metering device 12 second outfan is connected with BOG liquefying plant, and the second input is connected to into filling
The LNG transfer cask 3 in LNG transport vehicle unloaded in station, is used for measuring the BOG amount of unloading.
It is connected by gas phase pipeline between described BOG liquefying plant and LNG storage tank 1, for LNG is stored up
The liquefaction of BOG in tank 1, and reduce LNG storage tank 1 internal gas pressure.Liquid phase in described BOG liquefying plant
Pipeline is connected with LNG storage tank 1, and the LNG after being liquefied by BOG is recycled to LNG storage tank 1.
Described first supercharging gasifier 11 is connected with LNG transfer cask 3, during being used for unloading transports LNG
The supercharging of defeated tank 3, makes to be formed between LNG transfer cask 3 and LNG storage tank 1 pressure reduction.
LNG filling station in this utility model includes without pump unloading system, wherein said BOG liquefying plant
Liquid nitrogen storage tank the 5, second supercharging gasifier 7, heat exchanger 6 and LNG reclaim storage tank 4.Described heat exchanger 6
Gas feed is connected with described LNG storage tank 1 gas outlet and gas-liquid metering device 12 second outfan respectively,
Liquid outlet reclaims storage tank 4 with described LNG and is connected, for BOG liquefaction being condensed into LNG by liquid nitrogen,
And be recycled in LNG recovery storage tank 4.Described LNG reclaims the outlet of storage tank 4 liquid pipe and LNG storage tank
1 connects；Described liquid nitrogen storage tank 5, is condensed to heat exchanger 6 for liquefying BOG by pipeline conveying liquid nitrogen；
Described second supercharging gasifier 7 is connected with liquid nitrogen storage tank 5, for liquid nitrogen storage tank 5 is carried out supercharging, makes liquid
Nitrogen can be delivered to heat exchanger 6 by pipeline.
LNG filling station in this utility model, without pump unloading system, also includes that nitrogen heater 8 and nitrogen delay
Rushing tank 9, described nitrogen heater 8 is connected with heat exchanger 6 nitrogen outlet in BOG liquefying plant, is used for
Make the liquid nitrogen not being gasified totally heat up to gasify.Described nitrogen buffer tank 9 is connected with nitrogen heater 8, is used for
The recovery of nitrogen tail gas, can be used for standing interior instrument wind, air filling gun purging, the dilution of the nitrogen after described gasification is let out
The purposes such as gas leak body and fire extinguishing.
As in figure 2 it is shown, the LNG filling station in this utility model is without pump loading system, including at least one LNG
Storage tank 1, BOG liquefying plant, filling machine 13 and the 3rd supercharging gasifier 2.
Described filling machine 13 first input end is connected with LNG storage tank 1, and the first outfan is with vehicle-mounted bottle 10 even
Connect, be used for measuring vehicle-mounted bottle LNG adding amount；Described filling machine 13 second input is connected with vehicle-mounted bottle 10,
Second outfan is connected with BOG liquefying plant, is used for measuring vehicle-mounted bottle BOG yield.
The outlet of described BOG liquefying plant liquid pipe is connected to LNG storage tank 1, in vehicle-mounted bottle 10
BOG liquefaction be recycled in LNG storage tank 1.Described 3rd supercharging gasifier 2 is connected with LNG storage tank 1,
For LNG storage tank 1 is carried out supercharging, make to be formed between LNG storage tank 1 and vehicle-mounted bottle 10 pressure reduction.
LNG filling station in this utility model includes without pump loading system, wherein said BOG liquefying plant
Liquid nitrogen storage tank the 5, second supercharging gasifier 7, heat exchanger 6 and LNG reclaim storage tank 4.Described heat exchanger 6
Gas feed is connected with described LNG storage tank 1 gas outlet and filling machine 13 second outfan respectively, liquid
Export and be connected with described LNG recovery storage tank 4, for BOG liquefaction being condensed into LNG by liquid nitrogen, and
It is recycled to LNG reclaim in storage tank 4.Described LNG reclaims the outlet of storage tank 4 liquid pipe and LNG storage tank 1
Connect；Described liquid nitrogen storage tank 5, is condensed to heat exchanger 6 for liquefying BOG by pipeline conveying liquid nitrogen；
Described second supercharging gasifier 7 is connected with liquid nitrogen storage tank 5, for liquid nitrogen storage tank 5 is carried out supercharging, makes liquid
Nitrogen can be delivered to heat exchanger 6 by pipeline.
LNG filling station in this utility model, without pump loading system, also includes that nitrogen heater 8 and nitrogen delay
Rush tank 9.Described nitrogen heater 8 is connected with heat exchanger 6 nitrogen outlet in BOG liquefying plant, is used for
Make the liquid nitrogen not being gasified totally heat up to gasify.Described nitrogen buffer tank 9 is connected with nitrogen heater 8, is used for
The recovery of nitrogen tail gas, can be used for standing interior instrument wind, air filling gun purging, the dilution of the nitrogen after described gasification is let out
The purposes such as gas leak body and fire extinguishing.
As it is shown on figure 3, the LNG filling station in this utility model is without pump charging system, including at least one LNG
Storage tank 1, BOG liquefying plant, the first supercharging gasifier 11, gas-liquid metering device the 12, the 3rd supercharging gasification
Device 2 and filling machine 13.
Described gas-liquid metering device the first outfan is connected with LNG storage tank, and first input end is connected to into filling
The LNG transfer cask 3 in LNG transport vehicle unloaded in station, is used for measuring the LNG amount of unloading；Described gas-liquid meter
Amount device the second outfan is connected with BOG liquefying plant, and the second input is connected to unload into filling station
LNG transfer cask in LNG transport vehicle, is used for measuring the BOG amount of unloading.
It is connected by gas phase pipeline between described BOG liquefying plant and LNG storage tank, for LNG storage tank
The liquefaction of middle BOG, and reduce LNG storage tank internal gas pressure；Liquid pipe in described BOG liquefying plant with
LNG storage tank connects, and the LNG after being liquefied by BOG is recycled to LNG storage tank.
Described first supercharging gasifier is connected with LNG transfer cask, is used for the process of unloading and increases LNG transfer cask
Pressure, makes to be formed between LNG transfer cask and LNG storage tank pressure reduction.
Described filling machine first input end is connected with LNG storage tank, and the first outfan is connected with vehicle-mounted bottle (10),
For measuring vehicle-mounted bottle LNG adding amount.
Described filling machine the second input is connected with vehicle-mounted bottle, and the second outfan is connected with BOG liquefying plant,
For measuring vehicle-mounted bottle BOG yield.
Described 3rd supercharging gasifier is connected with LNG storage tank, for LNG storage tank is carried out supercharging, makes LNG
Pressure reduction is formed between storage tank and vehicle-mounted bottle.
As shown in Figure 4, the LNG filling station in this utility model is without pump charging system, including two LNG
Storage tank, BOG liquefying plant, the first supercharging gasifier 11, gas-liquid metering device the 12, the 3rd supercharging gasifier
2 and filling machine 13, two LNG storage tank are respectively the first LNG storage tank 101 and the second LNG storage tank 102.
Described gas-liquid metering device 12 first outfan and the first LNG storage tank 101 connect, first input end
It is connected to the LNG transfer cask 3 in the LNG transport vehicle unloaded into filling station, is used for measuring the LNG amount of unloading.
Described gas-liquid metering device 12 second outfan is connected with BOG liquefying plant, the second input be connected to into
The LNG transfer cask 3 in LNG transport vehicle that filling station is unloaded, is used for measuring the BOG amount of unloading.
Connected by gas phase pipeline between described BOG liquefying plant and the first LNG storage tank 101, for right
The liquefaction of BOG in first LNG storage tank 101, and reduce the first LNG storage tank 101 internal gas pressure；Described
Liquid pipe and the first LNG storage tank 101 in BOG liquefying plant connect, after being liquefied by BOG
LNG is recycled to the first LNG storage tank 101.
Described first supercharging gasifier 11 is connected with LNG transfer cask 3, is used for the process of unloading and transports LNG
Tank 3 supercharging, makes to be formed between LNG transfer cask 3 and the first LNG storage tank 101 pressure reduction.
Described filling machine 13 first input end and the second LNG storage tank 102 connect, and the first outfan is with vehicle-mounted
Bottle 10 connects, and is used for measuring vehicle-mounted bottle LNG adding amount；Described filling machine 13 second input and vehicle-mounted bottle
10 connect, and the second outfan is connected with BOG liquefying plant, is used for measuring vehicle-mounted bottle BOG yield.Institute
State BOG liquefying plant liquid-phase outlet and be connected to the second LNG storage tank 102, for the BOG in vehicle-mounted bottle 10
Liquefaction is recycled in the second LNG storage tank 102.Described 3rd supercharging gasifier 2 and the second LNG storage tank 102
Connect, for the second LNG storage tank 102 is carried out supercharging, make the second LNG storage tank 102 and vehicle-mounted bottle 10
Between formed pressure reduction.
First LNG storage tank 101 also can be connected with the 3rd supercharging gasifier 2 and filling machine 13 by pipeline,
Complete the LNG to vehicle-mounted bottle 10 and fill operation；Second LNG storage tank 102 also can be by pipeline and gas-liquid meter
Amount device 12 connects, and completes the LNG car unloading operation in the LNG transfer cask 3 in LNG transport vehicle.
LNG filling station in this utility model includes without pump charging system, wherein said BOG liquefying plant
Liquid nitrogen storage tank the 5, second supercharging gasifier 7, heat exchanger 6 and LNG reclaim storage tank 4.
The gas feed of described heat exchanger 6 respectively with described first LNG storage tank 101 gas outlet, gas-liquid metering
Device 12 second outfan and filling machine 13 second outfan connect, and liquid outlet reclaims with described LNG
Storage tank 4 connects, and for BOG liquefaction being condensed into LNG by liquid nitrogen, and is recycled to LNG and reclaims storage tank
In 4.
Described LNG reclaim storage tank 4 liquid pipe outlet respectively with the first LNG storage tank 101 and the 2nd LNG
Storage tank 102 connects.Described liquid nitrogen storage tank 5, is used for BOG liquid to heat exchanger 6 by pipeline conveying liquid nitrogen
Change condensation.Described second supercharging gasifier 7 is connected with liquid nitrogen storage tank 5, for increasing liquid nitrogen storage tank 5
Pressure, makes liquid nitrogen can be delivered to heat exchanger 6 by pipeline.
LNG filling station in this utility model, without pump charging system, also includes that nitrogen heater 8 and nitrogen delay
Rush tank 9.Described nitrogen heater 8 is connected with heat exchanger 6 nitrogen outlet in BOG liquefying plant, is used for
Make the liquid nitrogen not being gasified totally heat up to gasify.Described nitrogen buffer tank 9 is connected with nitrogen heater 8, is used for
The recovery of nitrogen tail gas, can be used for standing interior instrument wind, air filling gun purging, the dilution of the nitrogen after described gasification is let out
The purposes such as gas leak body and fire extinguishing.
As it is shown in figure 5, LNG filling station in use this utility model is without the technique of pump charging system, including
Following steps:
(1) unload without pump and BOG recovery process in LNG transfer cask: the LNG that filling station is unloaded will be entered
LNG transfer cask 3 in transport vehicle is connected by gas-liquid metering device 12；Open BOG liquefying plant, will
BOG in LNG storage tank is put to BOG liquefying plant condensation liquefaction and is recycled to LNG recovery storage tank 4
In, now, in LNG storage tank, pressure reduces；By the first supercharging gasifier 11, LNG transfer cask 3 is entered
Row supercharging, in making LNG transfer cask 3, pressure is more than LNG storage tank pressure, treats LNG transfer cask 3 and LNG
Storage tank pressure reduction reaches preset value for the moment, begins through gas-liquid metering device 12 and completes to unload；During unloading one
Give LNG transfer cask 3 supercharging to keep LNG transfer cask 3 and LNG straight through the first supercharging gasifier 11
Pressure reduction between storage tank, and BOG liquefying plant is always on；Unload after terminating, by LNG transfer cask 3
It is connected to BOG liquefying plant by gas-liquid metering device 12 and reclaims the BOG in LNG transfer cask 3, make
LNG transfer cask pressure drop as little as safety value；
(2) without pump filling and vehicle-mounted bottle BOG recovery process: open the 3rd supercharging gasifier 2, LNG is regulated
Pressure in storage tank；The vehicle-mounted bottle 10 entering filling station filling is connected by filling machine 13, opens BOG liquefaction
Device, puts the BOG in vehicle-mounted bottle 10 to BOG liquefying plant condensed fluid and is recycled to LNG recovery
In storage tank 4, now, in vehicle-mounted bottle 10, pressure reduces；Treat that LNG storage tank reaches pre-with vehicle-mounted bottle 10 pressure reduction
If during value two, begin through filling machine 13 and complete filling；The BOG produced in vehicle-mounted bottle 10 in filling process
It is recycled to BOG liquefying plant always.
In above-mentioned technique, when described LNG storage tank is one, step (1) and step (2) can not be entered simultaneously
OK；When described LNG storage tank is two, step (1) and step (2) can be carried out simultaneously, wherein run step
Suddenly the LNG storage tank of (1) is not same with the LNG storage tank of operating procedure (2).
LNG transfer cask LNG discharging quantity and BOG discharging quantity sum are actual total amount of unloading；Filling
LNG amount is actual filling total amount with the difference of the vehicle-mounted bottle BOG amount reclaimed.Described preset value one >=
0.15MPa, described safety value≤0.2MPa, described preset value two >=0.15MPa.
In above-mentioned technique, fill the nitrogen produced in flow process and the liquid nitrogen not being gasified totally can be through being connected to liquefaction
Nitrogen heater 8 heating after device heat exchanger 6 is gasified totally, and is temporarily stored into afterwards in nitrogen buffer tank 9,
Nitrogen tail gas can be used for instrument wind, air filling gun purging, the dilution leakage purposes such as gas and fire extinguishing in filling station.
LNG filling station in this utility model use solar energy as electricity consumption power supply in station, aerating and unloading all
Do not use pump as power, but utilize pressure reduction to realize.
Advantage of the present utility model and having the beneficial effect that:
1, this utility model has LNG without pump filling, this charging method, has saved power consumption, has saved and safeguard fortune
Row expense；
2, this utility model has BOG recovery, all diffuses without BOG during unloading in filling, improves energy
Source utilization rate and Safety and Environmental Protection；
3, this utility model realizes filling and the automatization unloaded, and improves safety；
4, this utility model uses solar powered, more energy-conserving and environment-protective.
5, this utility model eliminates air compressor machine, uses the nitrogen reclaimed as instrument wind and purge gas, also uses
Make leakage dilution and fire extinguishing gas, decrease investment and maintenance operation cost, more safe and efficient.
6, this utility model uses gas-liquid metering device to measure, and it is more accurate to measure.
This utility model has carried out following experimental verification:
This experiment purpose detection BOG liquefying plant liquid nitrogen consumption, test apparatus, equipment mainly include
LNG tank car (including BOG), BOG liquefying plant, Dewar container for liquefied nitrogen tank (including liquid nitrogen), carburator
And associated conduit valve instrument etc..
Experimental principle: utilize BOG liquefying plant that the cold of liquid nitrogen is transferred to BOG, BOG and absorb cold
Rear liquefaction thus collect, be stored into LNG and reclaim in storage tank.
Experimental procedure: by the liquid nitrogen import UNICOM of Dewar container for liquefied nitrogen tank liquid phase mouth and BOG liquefying plant, it is ensured that
The liquid nitrogen supply of BOG liquefying plant, the LNG tank car gas phase mouth after unloading and BOG liquefying plant BOG
Import connects, and all pipelines, instrument supply gas connect, and after the assay was approved, opens BOG inlet valve to BOG
BOG it is passed through in liquefying plant, after pressure stabilisation, open liquid nitrogen inlet valve, in BOG liquefying plant
Portion is passed through liquid nitrogen, and liquid nitrogen valve is automatically adjusted according to BOG liquefying plant liquid nitrogen level, to ensure liquid nitrogen level,
Nitrogen after re-heat is vented by nitrogen atmospheric valve, and atmospheric valve is automatically adjusted according to nitrogen pressure.
Interpretation, can draw following result by experimental record:
Liquid nitrogen usage amount be 853-689=164kg, LNG yield be 95-40=55kg, therefore, this device
Observable index 1:3, i.e. reclaiming 1 kilogram of BOG needs 3 kilograms of liquid nitrogen.
Experiment Data Records
Error analysis:
1, the insulation of liquid nitrogen pipeline, in process of the test, liquid nitrogen pipeline heat-insulation layer is rubber-plastic sponge, and cold insulation effect is relatively
Difference, quite a few loss of refrigeration capacity, causes liquefying plant energy consumption to raise, due to consumption relatively little waste during experiment
A small amount of liquid nitrogen will result in bigger error.
2, LNG tank car utilizes weighbridge to measure, and owing to weighbridge exists 20kg error, passes through retracting device
Liquidometer determines BOG yield with LNG tank car pressure drop contrast.
3, due to the complex mainly methane of BOG component, Theoretical Calculation is in terms of pure methane medium is carried out
Calculate, will also result in observable index and there is error with Theoretical Calculation.
Economic benefit, social benefit analysis (analyzing according to present stage liquid nitrogen price, LNG price comparison):
One, LNG tank car BOG reclaims:
(1), with LNG price it is that 4.6 yuan/kg calculates, 0.6 yuan/kg of liquid nitrogen price calculates, and i.e. reclaims 1
The liquid nitrogen cost of kilogram LNG is 1.8 yuan/kg, and profit is 2.8 yuan/kg.Now reclaim 200kg with 1 tank car,
Every day 1, tank car calculated, and profit is 200X2.8=560 unit/sky, within 1 year, calculated with 360 days, and annual return is 20.2
Ten thousand.
(2), with LNG price it is that 4.6 yuan/kg calculates, 1 yuan/kg of liquid nitrogen price calculates, and i.e. reclaims 1
The liquid nitrogen cost of kilogram LNG is 3 yuan/kg, and profit is 1.6 yuan/kg.Now reclaim 200kg with 1 tank car, often
It 1 tank car calculates, and profit is 200X1.6=320 unit/sky, within 1 year, calculates with 360 days, and annual return is 11.5
Ten thousand.
Two, LNG storage tank BOG reclaims:
Ensure that when LNG station is run idle discharge is not put by BOG, recyclable 100Kg/ days.
Three, vehicle-mounted LNG bottle BOG reclaims:
User can be helped to save LNG usage amount according to actual adding amount measuring and calculating every day, reduce operating cost.
Four, other benefit
Simultaneously device reclaim after nitrogen can as gauge valve, purge gas and leakage extinguishment by dilution gas,
Eliminating compressor operation maintenance cost, year can save 4.5 ten thousand yuan.
Five, environmental benefit
Natural gas is the most seriously about 21 times of carbon dioxide, if to BOG for the destruction of atmospheric ozone
Discharge be not controlled by, be allowed to discharge, quite serious to the destruction of environment, therefore to reducing carbon emission also
It is favourable, can reduce by 1512 tons of carbon emissions every year.
Being analyzed by above experimental result data, BOG retracting device does not only have considerable economic benefit, for
Low-carbon economy is also very favorable.
This utility model can be applicable to LNG, L-CNG, L/CNG gas combustion automobile filling station, LNG Industrial Steel
The fields such as bottle fueling station.
Embodiment described above is only to be described preferred implementation of the present utility model, the most right
Scope of the present utility model is defined, on the premise of without departing from this utility model design spirit, and this area
Various deformation that the technical solution of the utility model is made by those of ordinary skill and improvement, all should fall into this reality
In the protection domain determined with novel claims.
Claims (10)
1. LNG filling station is without a pump unloading system, including at least one LNG storage tank (1), BOG
Liquefying plant, the first supercharging gasifier (11) and gas-liquid metering device (12), it is characterised in that:
Described gas-liquid metering device the first outfan is connected with LNG storage tank, and first input end is connected to into filling
LNG transfer cask (3) in the LNG transport vehicle unloaded in station, is used for measuring the LNG amount of unloading；
Described gas-liquid metering device the second outfan is connected with BOG liquefying plant, the second input be connected to into
The LNG transfer cask in LNG transport vehicle that filling station is unloaded, is used for measuring the BOG amount of unloading；
It is connected by gas phase pipeline between described BOG liquefying plant and LNG storage tank, for LNG storage tank
The liquefaction of middle BOG, and reduce LNG storage tank internal gas pressure；
Liquid pipe in described BOG liquefying plant is connected with LNG storage tank, after being liquefied by BOG
LNG is recycled to LNG storage tank；
Described first supercharging gasifier is connected with LNG transfer cask, to LNG transfer cask during being used for unloading
Supercharging, makes to be formed between LNG transfer cask and LNG storage tank pressure reduction.
LNG filling station the most according to claim 1 liquefies without pump unloading system, wherein said BOG
Device includes that liquid nitrogen storage tank (5), the second supercharging gasifier (7), heat exchanger (6) and LNG reclaim storage
Tank (4), it is characterised in that:
Described heat exchanger gas feed respectively with described LNG storage tank (1) gas outlet and gas-liquid metering device
(12) second outfans connect, and liquid outlet reclaims storage tank with described LNG and is connected, and being used for will by liquid nitrogen
BOG liquefaction is condensed into LNG, and is recycled in LNG recovery storage tank；
Described LNG reclaims the outlet of storage tank liquid pipe and is connected with LNG storage tank；
Described liquid nitrogen storage tank, is condensed to heat exchanger for liquefying BOG by pipeline conveying liquid nitrogen；
Described second supercharging gasifier is connected with liquid nitrogen storage tank, for liquid nitrogen storage tank is carried out supercharging, makes liquid nitrogen
Heat exchanger can be delivered to by pipeline.
LNG filling station the most according to claim 2, without pump unloading system, also includes nitrogen heater
And nitrogen buffer tank (9) (8), it is characterised in that:
Described nitrogen heater is connected with heat exchanger (6) nitrogen outlet in BOG liquefying plant, is used for making
The liquid nitrogen not being gasified totally heats up and gasifies；
Described nitrogen buffer tank is connected with nitrogen heater, after the recovery of nitrogen tail gas, described gasification
Nitrogen can be used for stand interior instrument wind, air filling gun purging, the dilution leakage purposes such as gas and fire extinguishing.
4. LNG filling station is without a pump loading system, including at least one LNG storage tank (1), BOG
Liquefying plant, filling machine (13) and the 3rd supercharging gasifier (2), it is characterised in that:
Described filling machine first input end is connected with LNG storage tank, and the first outfan is connected with vehicle-mounted bottle (10),
For measuring vehicle-mounted bottle LNG adding amount；
Described filling machine the second input is connected with vehicle-mounted bottle, and the second outfan is connected with BOG liquefying plant,
For measuring vehicle-mounted bottle BOG yield；
The outlet of described BOG liquefying plant liquid pipe is connected to LNG storage tank, for the BOG in vehicle-mounted bottle
Liquefaction is recycled in LNG storage tank；
Described 3rd supercharging gasifier is connected with LNG storage tank, for LNG storage tank is carried out supercharging, makes LNG
Pressure reduction is formed between storage tank and vehicle-mounted bottle.
LNG filling station the most according to claim 4 liquefies without pump loading system, wherein said BOG
Device includes that liquid nitrogen storage tank (5), the second supercharging gasifier (7), heat exchanger (6) and LNG reclaim storage
Tank (4), it is characterised in that:
Described heat exchanger gas feed respectively with described LNG storage tank (1) gas outlet and filling machine (13)
Second outfan connects, and liquid outlet reclaims storage tank (4) with described LNG and is connected, and being used for will by liquid nitrogen
BOG liquefaction is condensed into LNG, and is recycled in LNG recovery storage tank；
Described LNG reclaims the outlet of storage tank liquid pipe and is connected with LNG storage tank；
Described liquid nitrogen storage tank, is condensed to heat exchanger for liquefying BOG by pipeline conveying liquid nitrogen；
Described second supercharging gasifier is connected with liquid nitrogen storage tank, for liquid nitrogen storage tank is carried out supercharging, makes liquid nitrogen
Heat exchanger can be delivered to by pipeline.
LNG filling station the most according to claim 5, without pump loading system, also includes nitrogen heater
And nitrogen buffer tank (9) (8), it is characterised in that:
Described nitrogen heater is connected with heat exchanger (6) nitrogen outlet in BOG liquefying plant, is used for making
The liquid nitrogen not being gasified totally heats up and gasifies；
Described nitrogen buffer tank is connected with nitrogen heater, after the recovery of nitrogen tail gas, described gasification
Nitrogen can be used for stand interior instrument wind, air filling gun purging, the dilution leakage purposes such as gas and fire extinguishing.
7. LNG filling station is without a pump charging system, including at least one LNG storage tank (1), BOG
Liquefying plant, the first supercharging gasifier (11), gas-liquid metering device (12), the 3rd supercharging gasifier (2)
With filling machine (13), it is characterised in that:
Described gas-liquid metering device the first outfan is connected with LNG storage tank, and first input end is connected to into filling
LNG transfer cask (3) in the LNG transport vehicle unloaded in station, is used for measuring the LNG amount of unloading；
Described gas-liquid metering device the second outfan is connected with BOG liquefying plant, the second input be connected to into
The LNG transfer cask in LNG transport vehicle that filling station is unloaded, is used for measuring the BOG amount of unloading；
It is connected by gas phase pipeline between described BOG liquefying plant and LNG storage tank, for LNG storage tank
The liquefaction of middle BOG, and reduce LNG storage tank internal gas pressure；
Liquid pipe in described BOG liquefying plant is connected with LNG storage tank, after being liquefied by BOG
LNG is recycled to LNG storage tank；
Described first supercharging gasifier is connected with LNG transfer cask, is used for the process of unloading and increases LNG transfer cask
Pressure, makes to be formed between LNG transfer cask and LNG storage tank pressure reduction；
Described filling machine first input end is connected with LNG storage tank, and the first outfan is connected with vehicle-mounted bottle (10),
For measuring vehicle-mounted bottle LNG adding amount；
Described filling machine the second input is connected with vehicle-mounted bottle, and the second outfan is connected with BOG liquefying plant,
For measuring vehicle-mounted bottle BOG yield；
Described 3rd supercharging gasifier is connected with LNG storage tank, for LNG storage tank is carried out supercharging, makes LNG
Pressure reduction is formed between storage tank and vehicle-mounted bottle.
LNG filling station the most according to claim 7 is without pump charging system, it is characterised in that include
Two LNG storage tank, two of which LNG storage tank is respectively the first LNG storage tank (101) and the 2nd LNG
Storage tank (102)；
Wherein, described gas-liquid metering device the first outfan and the first LNG storage tank connect, and first input end is even
It is connected to the LNG transfer cask (3) in the LNG transport vehicle unloaded into filling station, is used for measuring LNG and unloads
Amount；
Described gas-liquid metering device the second outfan is connected with BOG liquefying plant, the second input be connected to into
The LNG transfer cask in LNG transport vehicle that filling station is unloaded, is used for measuring the BOG amount of unloading；
Connected by gas phase pipeline between described BOG liquefying plant and the first LNG storage tank, for first
The liquefaction of BOG in LNG storage tank, and reduce the first LNG storage tank internal gas pressure；
Liquid pipe and the first LNG storage tank in described BOG liquefying plant connect, for being liquefied by BOG
After LNG be recycled to the first LNG storage tank；
Described first supercharging gasifier is connected with LNG transfer cask, is used for the process of unloading and increases LNG transfer cask
Pressure, makes to be formed between LNG transfer cask and the first LNG storage tank pressure reduction；
Described filling machine first input end and the second LNG storage tank connect, the first outfan and vehicle-mounted bottle (10)
Connect, be used for measuring vehicle-mounted bottle LNG adding amount；
Described filling machine the second input is connected with vehicle-mounted bottle, and the second outfan is connected with BOG liquefying plant,
For measuring vehicle-mounted bottle BOG yield；
Described BOG liquefying plant liquid-phase outlet is connected to the second LNG storage tank, for the BOG in vehicle-mounted bottle
Liquefaction is recycled in the second LNG storage tank；
Described 3rd supercharging gasifier and the second LNG storage tank connect, for increasing the second LNG storage tank
Pressure, makes to be formed between the second LNG storage tank and vehicle-mounted bottle pressure reduction.
LNG filling station the most according to claim 8 liquefies without pump charging system, wherein said BOG
Device includes that liquid nitrogen storage tank (5), the second supercharging gasifier (7), heat exchanger (6) and LNG reclaim storage
Tank (4), it is characterised in that:
Described heat exchanger gas feed respectively with described first LNG storage tank (101) gas outlet, gas-liquid meter
Amount device (12) second outfan and filling machine (13) second outfan connect, and liquid outlet is with described
LNG reclaims storage tank and connects, and for BOG liquefaction being condensed into LNG by liquid nitrogen, and is recycled to LNG and returns
Store up in tank；
Described LNG reclaim storage tank liquid pipe outlet respectively with the first LNG storage tank and the second LNG storage tank
(102) connect；
Described liquid nitrogen storage tank, is condensed to heat exchanger for liquefying BOG by pipeline conveying liquid nitrogen；
Described second supercharging gasifier is connected with liquid nitrogen storage tank, for liquid nitrogen storage tank is carried out supercharging, makes liquid nitrogen
Heat exchanger can be delivered to by pipeline.
LNG filling station the most according to claim 9, without pump charging system, also includes nitrogen heater
And nitrogen buffer tank (9) (8), it is characterised in that:
Described nitrogen heater is connected with heat exchanger (6) nitrogen outlet in BOG liquefying plant, is used for making
The liquid nitrogen not being gasified totally heats up and gasifies；
Described nitrogen buffer tank is connected with nitrogen heater, after the recovery of nitrogen tail gas, described gasification
Nitrogen can be used for stand interior instrument wind, air filling gun purging, the dilution leakage purposes such as gas and fire extinguishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620471669.3U CN205781982U (en) | 2016-05-23 | 2016-05-23 | LNG filling station is unloaded without pump, is filled and charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620471669.3U CN205781982U (en) | 2016-05-23 | 2016-05-23 | LNG filling station is unloaded without pump, is filled and charging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205781982U true CN205781982U (en) | 2016-12-07 |
Family
ID=58115653
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620471669.3U Withdrawn - After Issue CN205781982U (en) | 2016-05-23 | 2016-05-23 | LNG filling station is unloaded without pump, is filled and charging system |
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| CN (1) | CN205781982U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864636A (en) * | 2016-05-23 | 2016-08-17 | 唐山市新概念科技有限公司 | Pump-free unloading, refueling and filling systems and pump-free filling technology of LNG refueling station |
| CN108224082A (en) * | 2018-01-16 | 2018-06-29 | 中科睿凌江苏低温设备有限公司 | A kind of simple and feasible cryogenic gas reliquefaction installation |
| CN112963734A (en) * | 2021-03-19 | 2021-06-15 | 嘉寓氢能源科技(辽宁)有限公司 | Hydrogenation station gas column system that unloads |
-
2016
- 2016-05-23 CN CN201620471669.3U patent/CN205781982U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864636A (en) * | 2016-05-23 | 2016-08-17 | 唐山市新概念科技有限公司 | Pump-free unloading, refueling and filling systems and pump-free filling technology of LNG refueling station |
| CN105864636B (en) * | 2016-05-23 | 2018-11-06 | 唐山市新概念科技有限公司 | LNG filling stations unload without pump, fill, charging system and fill technique |
| CN108224082A (en) * | 2018-01-16 | 2018-06-29 | 中科睿凌江苏低温设备有限公司 | A kind of simple and feasible cryogenic gas reliquefaction installation |
| CN112963734A (en) * | 2021-03-19 | 2021-06-15 | 嘉寓氢能源科技(辽宁)有限公司 | Hydrogenation station gas column system that unloads |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20181106 |
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