CN209655015U - A kind of re-liquefied system of BOG - Google Patents
A kind of re-liquefied system of BOG Download PDFInfo
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- CN209655015U CN209655015U CN201920273494.9U CN201920273494U CN209655015U CN 209655015 U CN209655015 U CN 209655015U CN 201920273494 U CN201920273494 U CN 201920273494U CN 209655015 U CN209655015 U CN 209655015U
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Abstract
The utility model discloses a kind of re-liquefied systems of BOG, including several re-liquefied equipment, every re-liquefied equipment includes low-temperature liquid buffering tank, refrigerating plant, radiator, control system, refrigerating plant is connected on the low-temperature liquid buffering tank, the refrigerating plant includes hot end and cold end, radiator is connected on the hot end of the refrigerating plant, the low-temperature liquid buffering tank enters pipe and liquid return tube by gas and connect with LNG storage tank, the gas, which enters on pipe, to be connected with gas and enters valve, liquid reflux valve is connected on the liquid return tube, the control system and gas enter valve, liquid reflux valve, refrigerating plant and the connection of LNG storage tank signal.The utility model adjusts re-liquefied opening of device quantity by controlling the electrically operated valve on re-liquefied equipment parallel pipeline, can be realized the effective recycling and the saving and reasonable disposition of cost of BOG.
Description
Technical field
The utility model relates to the re-liquefied technical field of gas more particularly to a kind of re-liquefied systems of BOG.
Background technique
Liquefied natural gas (LNG) is to be cooled to -162 DEG C by gaseous natural gas under normal pressure, is allowed to condense into liquid.
Storage and transportation space can be greatlyd save after natural gas liquefaction, and has the characteristics that calorific value is big, performance is high.The low temperature of LNG storage
LNG will generate BOG since there are heat exchanges with the external world.To guarantee equipment safety, it will usually which the BOG of generation to be directly discharged into
Atmosphere, results in waste of resources and environmental pollution and security risk.
Currently, mainly utilizing liquid nitrogen liquefaction recycling BOG for the re-liquefied way of recycling of BOG, which needs a large amount of
Equipment investment, process flow is complicated, while according to the actual conditions of collection site difference, will lead to utilization rate of equipment and installations difference very
Greatly.
Therefore, a kind of re-liquefied system of novel B OG is needed at present, can effectively recycle the BOG in LNG storage tank area, reduces BOG
Discharge, avoid the wasting of resources and environmental pollution, while carrying out automatically controlling according to the amount of BOG to equipment start-stop, cost of implementation
It saves.
Utility model content
It can solve to handle in a manner of emptying in the prior art the technical problem to be solved by the utility model is to provide one kind
The BOG generated in LNG storage tank solves the problem of that the own discharge of existing energy waste is dangerous re-liquefied with the BOG of environmental pollution
System.
In order to solve the above technical problems, the utility model provides a kind of re-liquefied system of BOG, including several re-liquefied set
Standby, every re-liquefied equipment includes low-temperature liquid buffering tank, refrigerating plant, radiator, control system, it is characterised in that: institute
It states and is connected with refrigerating plant on low-temperature liquid buffering tank, the refrigerating plant includes hot end and cold end, the heat of the refrigerating plant
Radiator is connected on end, the low-temperature liquid buffering tank enters pipe by gas and connect with LNG storage tank, the cryogenic liquid
Surge tank is connect by liquid return tube with LNG storage tank, and the gas, which enters on pipe, to be connected with gas and enter valve, the liquid time
Liquid reflux valve is connected in flow tube, the control system and gas enter valve, liquid reflux valve, refrigerating plant and LNG storage tank
Signal connection.
Further, the re-liquefied equipment is connected in parallel by parallel pipeline, the gas of every re-liquefied equipment into
Enter to be equipped with gas on pipe and liquid return tube and enters valve and liquid reflux valve.
Further, the refrigerating plant is the refrigeration equipments such as Stirling-electric hybrid, pulse thermoacoustic machine or external refrigeration machine.
Further, the cold end is set to inside low-temperature liquid buffering tank, and the hot end is set to outside low-temperature liquid buffering tank
Portion selects suitable flange method by welding or according to cold end position size between the refrigerating plant and low-temperature liquid buffering tank
Connection.
Further, the radiator on the refrigerating plant is designed using air-cooled or Water Cooling Technology.
Further, the gas enters pipe and is connected at LNG storage tank top blowdown piping and low-temperature liquid buffering tank
Between top or upper end, the liquid return tube is connected between the bottom end of LNG storage tank and the bottom end of low-temperature liquid buffering tank,
Connection type is all made of flanged joint.
Further, LNG storage tank top blowdown piping opening and welded flange, the top of the low-temperature liquid buffering tank
End or upper end are welded with flanged joint mouth, enter pipe for connecting gas, LNG storage tank bottom end pipeline tapping is welded with method
The bottom end pipe outlet of orchid, the low-temperature liquid buffering tank is welded with flanged joint mouth, for connecting liquid return tube.
Further, the low-temperature liquid buffering tank is insulated cryogen container, and adiabatic method is vacuum insulation.
Further, it is the low temperature resistant pipeline of stainless steel that the gas, which enters pipe and liquid return tube, is Cryo Heat Insulation pipe
Line.
Further, aluminum heat sink is installed, the aluminum heat sink is ripple in the low-temperature liquid buffering tank
Netted hollow out heat sink, the aluminum heat sink marginal position are provided with stainless steel supporting support, and the gas enters valve, liquid
Return valve is electrically operated valve, and the control system is PLC control system, can pressure, temperature according to the LNG storage tank received
Signal controls the automatic switch start and stop that gas enters valve, liquid reflux valve and refrigerating plant.
Compared with prior art, the utility model has the following beneficial effects:
The utility model, which by control system opens gas and enters valve and enter pipe by gas, enters low-temperature liquid buffering tank
It is interior, cooled down by refrigerating plant re-liquefied, the cold end of refrigerating plant guarantees heat transfer efficiency equipped with aluminum heat sink, and BOG liquefaction is
After LNG by gravity storage-stable in low-temperature liquid buffering tank, when surge tank will be full, liquid reflux valve, liquefaction are opened
Liquid afterwards is collected by liquid return tube reflux to LNG storage tank, to realize the recycling of BOG, while the system can be according to production
The amount of raw BOG automatically adjusts the unlatching quantity of re-liquefied equipment, can effectively save cost, reasonable disposition is carried out to resource.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Figure label:
1- low-temperature liquid buffering tank 2- refrigerating plant 3- radiator
4- aluminum heat sink 5- pipeline coupling flange 6- gas enters pipe
7- liquid return tube 8- gas enters valve 9- liquid reflux valve
The hot end 10- control system 21- 22- cold end.
Specific embodiment
The preferred embodiment of the utility model is elaborated with reference to the accompanying drawing so that the advantages of the utility model and
Feature can be easier to be readily appreciated by one skilled in the art, to make to the protection scope of the utility model apparent specific
It defines.
It is shown in Figure 1, a kind of re-liquefied system of BOG, including several re-liquefied equipment, every re-liquefied equipment includes
Low-temperature liquid buffering tank 1, refrigerating plant 2, radiator 3, control system 10 are connected with system on the low-temperature liquid buffering tank 1
Device for cooling 2, the refrigerating plant 2 include hot end 21 and cold end 22, are connected with radiator on the hot end 21 of the refrigerating plant 2
3, the low-temperature liquid buffering tank 1 enters pipe 6 by gas and connect with LNG storage tank, and the low-temperature liquid buffering tank 1 passes through liquid
Return pipe 7 is connect with LNG storage tank, and the gas, which enters on pipe 6, to be connected with gas and enter valve 8, is connected on the liquid return tube 7
There is liquid reflux valve 9, the control system 10 enters valve 8, liquid reflux valve 9, refrigerating plant 2 and LNG storage tank signal with gas
Connection.
Specifically, the re-liquefied equipment is connected in parallel by parallel pipeline, the gas of every re-liquefied equipment enters
Gas, which is equipped with, on pipe 6 and liquid return tube 7 enters valve 8 and liquid reflux valve 9.
Specifically, the refrigerating plant 2 is the refrigeration equipments such as Stirling-electric hybrid, pulse thermoacoustic machine or external refrigeration machine.
Specifically, the cold end 22 is set to inside low-temperature liquid buffering tank 1, the hot end 22 is set to low-temperature liquid buffering tank
Outside 1, suitable method is selected by welding or according to cold end position size between the refrigerating plant 2 and low-temperature liquid buffering tank 1
Blue mode connects.
Specifically, the radiator 3 on the refrigerating plant 2 is designed using air-cooled or Water Cooling Technology.
Specifically, the gas, which enters pipe 6, is connected at LNG storage tank top blowdown piping and low-temperature liquid buffering tank 1
Between top or upper end, the liquid return tube 7 be connected at LNG storage tank bottom end and low-temperature liquid buffering tank 1 bottom end it
Between, connection type is all made of the connection of flange 5.
Specifically, LNG storage tank top blowdown piping opening and welded flange, the top of the low-temperature liquid buffering tank 1
End or upper end are welded with flanged joint mouth, enter pipe 6 for connecting gas, LNG storage tank bottom end pipeline tapping is welded with method
The bottom end pipe outlet of orchid, the low-temperature liquid buffering tank 1 is welded with flanged joint mouth, for connecting liquid return tube 7.
Specifically, the low-temperature liquid buffering tank 1 is insulated cryogen container, adiabatic method is vacuum insulation.
Specifically, it is the low temperature resistant pipeline of stainless steel that the gas, which enters pipe 6 and liquid return tube 7, it is Cryo Heat Insulation pipe
Line.
Specifically, being equipped with aluminum heat sink 4 in the low-temperature liquid buffering tank 1, the aluminum heat sink 4 is ripple net
Shape hollow out heat sink, 4 marginal position of aluminum heat sink are provided with stainless steel supporting support, and the gas enters valve 8, liquid
Return valve 9 is electrically operated valve, and the control system 10 is PLC control system, can according to the pressure of the LNG storage tank received,
Temperature signal controls the automatic switch start and stop that gas enters valve 8, liquid reflux valve 9 and refrigerating plant 2.
The working principle of the utility model are as follows: in the LNG storage tank area for thering are a large amount of BOG to generate, the BOG that is generated in LNG storage tank
Opening gas is controlled by pressure and enters valve 8, and pipe 6 is entered by gas and is entered in low-temperature liquid buffering tank 1, refrigerating plant is passed through
2 cooling liquefaction, BOG liquefaction lean on gravity storage-stable in low-temperature liquid buffering tank 1 after being LNG, when surge tank will be full,
Liquid reflux valve 9 is opened, LNG can be back in LNG storage tank by liquid return tube 7, to realize the recycling of BOG, while this is
System can automatically adjust the unlatching quantity of re-liquefied equipment according to the amount for generating BOG, can effectively save cost, resource is closed
Reason configuration.
The foregoing is merely the better embodiment of the utility model, the protection scope of the utility model is not with above-mentioned reality
The mode of applying is limited, as long as those of ordinary skill in the art's equivalent modification according to made by the utility model disclosure or change
Change, should be included in the scope of the protection described in the claims.
Claims (10)
1. a kind of re-liquefied system of BOG, including several re-liquefied equipment, every re-liquefied equipment includes low-temperature liquid buffering
Tank, refrigerating plant, radiator, control system, it is characterised in that: it is connected with refrigerating plant on the low-temperature liquid buffering tank,
The refrigerating plant includes hot end and cold end, and radiator is connected on the hot end of the refrigerating plant, and the cryogenic liquid is slow
It rushing tank pipe and liquid return tube is entered by gas and connect with LNG storage tank, the gas, which enters on pipe, to be connected with gas and enters valve,
Liquid reflux valve is connected on the liquid return tube, the control system and gas enter valve, liquid reflux valve, refrigerating plant
And LNG storage tank signal connection.
2. the re-liquefied system of a kind of BOG according to claim 1, it is characterised in that: the re-liquefied equipment passes through parallel connection
Pipeline is connected in parallel, and the gas of every re-liquefied equipment, which enters, to be equipped with gas on pipe and liquid return tube and enter valve and liquid
Return valve.
3. the re-liquefied system of a kind of BOG according to claim 1, it is characterised in that: the refrigerating plant be Stirling-electric hybrid,
The refrigeration equipments such as pulse thermoacoustic machine or external refrigeration machine.
4. the re-liquefied system of a kind of BOG according to claim 1, it is characterised in that: the cold end is slow set on cryogenic liquid
It rushes inside tank, the hot end is set to outside low-temperature liquid buffering tank, is passed through between the refrigerating plant and low-temperature liquid buffering tank
Welding selects suitable flange method connection according to cold end position size.
5. the re-liquefied system of a kind of BOG according to claim 1, it is characterised in that: the heat dissipation dress on the refrigerating plant
It sets and is designed using air-cooled or Water Cooling Technology.
6. the re-liquefied system of a kind of BOG according to claim 1, it is characterised in that: the gas enters pipe and is connected at
Between LNG storage tank top blowdown piping and the top or upper end of low-temperature liquid buffering tank, the liquid return tube is connected at LNG
Between the bottom end of storage tank and the bottom end of low-temperature liquid buffering tank, connection type is all made of flanged joint.
7. the re-liquefied system of a kind of BOG according to claim 1, it is characterised in that: LNG storage tank top blowdown piping
Be open and welded flange, the top or upper end of the low-temperature liquid buffering tank be welded with flanged joint mouth, for connect gas into
Enter pipe, LNG storage tank bottom end pipeline tapping is welded with flange, and the bottom end pipe outlet of the low-temperature liquid buffering tank is welded with
Flanged joint mouth, for connecting liquid return tube.
8. the re-liquefied system of a kind of BOG according to claim 1, it is characterised in that: the low-temperature liquid buffering tank is exhausted
Hot low-temperature (low temperature) vessel, adiabatic method are vacuum insulation.
9. the re-liquefied system of a kind of BOG according to claim 1, it is characterised in that: the gas enters pipe and liquid returns
Flow tube is the low temperature resistant pipeline of stainless steel, is Cryo Heat Insulation pipeline.
10. the re-liquefied system of a kind of BOG according to claim 1, it is characterised in that: pacify in the low-temperature liquid buffering tank
Equipped with aluminum heat sink, the aluminum heat sink is the netted hollow out heat sink of ripple, the aluminum heat sink marginal position setting
There is stainless steel supporting support, the gas enters valve, liquid reflux valve is electrically operated valve, and the control system is PLC control
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920273494.9U CN209655015U (en) | 2019-03-05 | 2019-03-05 | A kind of re-liquefied system of BOG |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920273494.9U CN209655015U (en) | 2019-03-05 | 2019-03-05 | A kind of re-liquefied system of BOG |
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| Publication Number | Publication Date |
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| CN209655015U true CN209655015U (en) | 2019-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920273494.9U Active CN209655015U (en) | 2019-03-05 | 2019-03-05 | A kind of re-liquefied system of BOG |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798439A (en) * | 2019-03-05 | 2019-05-24 | 江苏鼎程新能源科技有限公司 | A kind of re-liquefied system of BOG |
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2019
- 2019-03-05 CN CN201920273494.9U patent/CN209655015U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798439A (en) * | 2019-03-05 | 2019-05-24 | 江苏鼎程新能源科技有限公司 | A kind of re-liquefied system of BOG |
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