CN202561436U - Liquefied natural gas station flashed vapor recovery device - Google Patents

Liquefied natural gas station flashed vapor recovery device Download PDF

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Publication number
CN202561436U
CN202561436U CN2012200543803U CN201220054380U CN202561436U CN 202561436 U CN202561436 U CN 202561436U CN 2012200543803 U CN2012200543803 U CN 2012200543803U CN 201220054380 U CN201220054380 U CN 201220054380U CN 202561436 U CN202561436 U CN 202561436U
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CN
China
Prior art keywords
valve
natural gas
liquefied natural
stop valve
lng
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2012200543803U
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Chinese (zh)
Inventor
张付伟
苗灏
杨尚宾
郑龙杰
郭玉华
张可红
马继伟
侯全兵
梅利
黄利涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANDONG GREEN ENERGY GAS INDUSTRIAL Co Ltd
ZHONGYUAN LUNENG HIGH-TECHNOLOGIES Co Ltd HENAN PROV
Original Assignee
SHANDONG GREEN ENERGY GAS INDUSTRIAL Co Ltd
ZHONGYUAN LUNENG HIGH-TECHNOLOGIES Co Ltd HENAN PROV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by SHANDONG GREEN ENERGY GAS INDUSTRIAL Co Ltd, ZHONGYUAN LUNENG HIGH-TECHNOLOGIES Co Ltd HENAN PROV filed Critical SHANDONG GREEN ENERGY GAS INDUSTRIAL Co Ltd
Priority to CN2012200543803U priority Critical patent/CN202561436U/en
Application granted granted Critical
Publication of CN202561436U publication Critical patent/CN202561436U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A liquefied natural gas station flashed vapor recovery device is a recycle technology of liquefied natural gas station, solving the safety problem in the prior production, wherein the structural relation is as follows: a first shutoff valve, a first atmospheric valve and a first pneumatic valve are arranged on a pipe line in the middle of a liquefied natural gas storage tank and an air temperature type vaporizer in sequence; an electric heater, a second pneumatic valve, a compressor, a third pneumatic valve and a one way valve are arranged on a pipe line in the middle of the air temperature type vaporizer and an air reservoir in sequence; a second shutoff valve is arranged on a pipe line in the middle of the liquefied natural gas storage tank and a liquefied natural gas tank car; a fourth shutoff valve and a fifth shutoff valve are arranged on the unloading pipe line of the liquefied natural gas tank car in parallel; and a second atmospheric valve and a third shutoff valve are arranged in the middle of the unloading pipe line and a liquefied natural gas charging device area.

Description

Gas filling of liquefied natural gas station flashed vapour recovering device
Technical field: this practical recycling of a kind of gas filling of liquefied natural gas station technology, especially gas filling of liquefied natural gas station flashed vapour recovering device of relating to.
Background technique: along with improving constantly of fuel price and continuing to increase of energy supply and demand contradiction; In order to alleviate fuel oil crisis and fuel saving expense; Automobile with compressed natural gas has obtained long-term development and has popularized widely, but can not be applied in the higher heavy goods vehicles of consumption combustion because of its fuel amount of carrying is few and above the long-distance car.The appearance of LNG Liquefied natural gas has fundamentally solved heavy goods vehicles and the long-distance car problem big to demand for fuel; The promotion efficiency of the fast development of China's LNG Liquefied natural gas industry and LNGV demonstration in recent years continues to increase, and makes LNG Liquefied natural gas more and more ripe as the technology of vehicle fuel.Increasing car owner hopes to change the burning LNG Liquefied natural gas under the driving of economic benefits, and the LNGV gas station also builds more and more under the situation that LNGV is on the increase and a large amount of universal gesture are arranged.
The gas filling of liquefied natural gas station is through actual motion practice discovery; There are a large amount of flashed vapours every day in the gas filling of liquefied natural gas station; Flashed vapour was more when especially the aerating vehicle was few, must not timing every day carry out emptying to the flashed vapour that gas station produces in order to ensure the safety gas station.Emptying also must be carried out to flashed vapour in the tank car except after producing the external end of unloading of flashed vapour every day at every turn in order to ensure LNG Liquefied natural gas tank car backhaul safety in the gas filling of liquefied natural gas station.The emptying flashed vapour operates in to gas station and brings the tremendous economic loss time also to cause huge potential safety hazard.
Domestic recycling about the LNG Liquefied natural gas flashed vapour at present mainly is the city gas aspect; When storage device pressure is high; At first release urban pipe network the inside of LNG Liquefied natural gas flashed vapour, but the gas station aspect also can be followed about how recycling flashed vapour beyond example.
Summary of the invention: the purpose of the utility model provides a kind of gas filling of liquefied natural gas station flashed vapour recovering device of safe operation; It has solved the safety problem in the original production; The purpose of the utility model is to realize like this; It is to be formed by connecting in LNG tank, first stop valve, first atmospheric valve, first pneumatic valve, air temperature type vaporizer, electric heater, second pneumatic valve, compressor, the 3rd pneumatic valve, one-way valve, gas station air reservoir, second stop valve, the 3rd stop valve, the 4th stop valve, the 5th stop valve, the pipeline of unloading, second atmospheric valve, LNG Liquefied natural gas tank car; Order is installed with first stop valve, first atmospheric valve, first pneumatic valve on the pipeline in the middle of LNG tank and the air temperature type vaporizer, and order is being installed with electric heater, second pneumatic valve, compressor, the 3rd pneumatic valve, one-way valve on the pipeline in the middle of air temperature type vaporizer and the air reservoir; In the middle of LNG tank and LNG Liquefied natural gas tank car pipeline on second stop valve is installed; The 4th stop valve and the 5th stop valve are installed on the pipeline of unloading of LNG Liquefied natural gas tank car side by side, second atmospheric valve and the 3rd stop valve are installed in the middle of unload pipeline and LNG Liquefied natural gas liquid-adding device district.
When LNG tank pressure is high, start compressor start button; First pneumatic valve is opened; Flashed vapour gets into compressor through air temperature type vaporizer, electric heater and second pneumatic valve successively and carries out the level pressurization, and the flashed vapour after the pressurization is finally sold through the compressed natural gas gas selling machine through the 3rd pneumatic valve and one-way valve entering gas station air reservoir.
Need not launch electric heater at summer environment temperature height; When the winter environment temperature is low behind the air temperature type vaporizer rewarming; The flashed vapour temperature still is lower than compressor second pneumatic valve that requires of intake temperature cuts out; Compressor can't start, electric heater start when the flashed vapour temperature behind the rewarming be higher than compressor to the requirement of intake temperature after compressor can be with startup., recovering device directly opens first stop valve when breaking down and first atmospheric valve carries out emptying to flashed vapour in the LNG tank.
Unload at every turn and close the 3rd stop valve and the 5th stop valve after finishing, open second stop valve and the 4th stop valve, start compressor flashed vapour in the LNG Liquefied natural gas tank car is reclaimed.When recovering device breaks down, close the 3rd stop valve, open second atmospheric valve, flashed vapour in the LNG Liquefied natural gas tank car is carried out emptying handle.
The utility model uses the finned air temperature type vaporizer of aluminium and two kinds of methods of electric heating that flashed vapour is carried out rewarming; Adopt 3 grades of reciprocal compressors, the flashed vapour behind the rewarming is compressed, the compressor type of cooling is air-cooled; Recovering device can be realized four seasons rewarming to flashed vapour, and the flashed vapour behind the rewarming can be pressurized to 20Mpa and sell as compressed natural gas.
The utility model has the advantages that: can the flashed vapour that gas station produces be reclaimed; Can also the flashed vapour that the LNG Liquefied natural gas tank car produces be reclaimed; And can use in the northern area four seasons of cold weather, the flashed vapour after the pressurization can directly be sold as compressed natural gas.
Description of drawings: the schematic representation of Fig. 1 gas filling of liquefied natural gas station flashed vapour recovering device, among the figure 1, LNG tank 2, first stop valve 3, first atmospheric valve 4, first pneumatic valve 5, air temperature type vaporizer 6, electric heater 7, second pneumatic valve 8, compressor 9, the 3rd pneumatic valve 10, one-way valve 11, gas station air reservoir 12, LNG Liquefied natural gas tank car 13, the 5th stop valve 14, the 4th stop valve 15, the pipeline 16 of unloading, second stop valve 17, second atmospheric valve 18, the 3rd stop valve 19, LNG Liquefied natural gas liquid-adding device district
Embodiment: the utility model is to be formed by connecting in LNG tank 1, first stop valve 2, first atmospheric valve 3, first pneumatic valve 4, temperature-control type vaporizer 5, electric heater 6, second pneumatic valve 7, compressor 8, the 3rd pneumatic valve 9, one-way valve 10, gas station air reservoir 11, second stop valve 16, the 3rd stop valve 18, the 4th stop valve 14, the 5th stop valve 13, the pipeline 15 of unloading, second atmospheric valve 17, LNG Liquefied natural gas tank car 12, and order is installed with first stop valve 2, first atmospheric valve 3, first pneumatic valve 4 on the pipeline in the middle of LNG tank 1 and the air temperature type vaporizer 5; Order is being installed with electric heater 6, second pneumatic valve 7, compressor 8, the 3rd pneumatic valve 9, one-way valve 10 on the pipeline in the middle of temperature-control type vaporizer 5 and the gas station air reservoir 11.
Embodiment 2, on the pipeline in the middle of LNG tank 1 and the LNG Liquefied natural gas tank car 12, second stop valve 16 is installed; The 4th stop valve 14 and the 5th stop valve 13 are installed side by side, at pipeline 15 and LNG Liquefied natural gas liquid-adding device district 19 middle second atmospheric valve 17 and the 3rd stop valves 18 of being installed with of unloading on the pipeline of unloading of LNG Liquefied natural gas tank car 12.

Claims (2)

1. gas filling of liquefied natural gas station flashed vapour recovering device; It is to be formed by connecting in LNG tank (1), first stop valve (2), first atmospheric valve (3), first pneumatic valve (4), temperature-control type vaporizer (5), electric heater (6), second pneumatic valve (7), compressor (8), the 3rd pneumatic valve (9), one-way valve (10), gas station air reservoir (11), second stop valve (16), the 3rd stop valve (18), the 4th stop valve (14), the 5th stop valve (13), the pipeline of unloading (15), second atmospheric valve (17), LNG Liquefied natural gas tank car (12), LNG Liquefied natural gas liquid-adding device district (19), it is characterized in that: order is installed with first stop valve (2), first atmospheric valve (3), first pneumatic valve (4) on the pipeline in the middle of LNG tank (1) and the air temperature type vaporizer (5); Order is being installed with electric heater (6), second pneumatic valve (7), compressor (8), the 3rd pneumatic valve (9), one-way valve (10) on the pipeline in the middle of temperature-control type vaporizer (5) and the gas station air reservoir (11).
2. gas filling of liquefied natural gas according to claim 1 station flashed vapour recovering device is characterized in that: on the pipeline in the middle of LNG tank (1) and the LNG Liquefied natural gas tank car (12), second stop valve (16) is installed; The 4th stop valve (14) and the 5th stop valve (13) are installed side by side, at pipeline of unloading (15) and middle second atmospheric valve (17) and the 3rd stop valve (18) of being installed with in LNG Liquefied natural gas liquid-adding device district (19) on the pipeline of unloading of LNG Liquefied natural gas tank car (12).
CN2012200543803U 2012-02-20 2012-02-20 Liquefied natural gas station flashed vapor recovery device Expired - Fee Related CN202561436U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200543803U CN202561436U (en) 2012-02-20 2012-02-20 Liquefied natural gas station flashed vapor recovery device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200543803U CN202561436U (en) 2012-02-20 2012-02-20 Liquefied natural gas station flashed vapor recovery device

Publications (1)

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CN202561436U true CN202561436U (en) 2012-11-28

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CN2012200543803U Expired - Fee Related CN202561436U (en) 2012-02-20 2012-02-20 Liquefied natural gas station flashed vapor recovery device

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105135208A (en) * 2015-08-20 2015-12-09 中国石油大学(北京) Compression recycling method for evaporation gas of liquefied natural gas
CN105202363A (en) * 2013-07-24 2015-12-30 沈军 Device for recovering liquid residue and gas residue in liquid natural gas transport vehicle tank
CN105927848A (en) * 2016-04-20 2016-09-07 中国石油化工股份有限公司 Small device and method for rapidly re-liquefying and recovering liquefied natural gas vapour
CN106764417A (en) * 2016-12-20 2017-05-31 山东新兴重工科技发展有限公司 A kind of BOG recycling and processing devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105202363A (en) * 2013-07-24 2015-12-30 沈军 Device for recovering liquid residue and gas residue in liquid natural gas transport vehicle tank
CN105135208A (en) * 2015-08-20 2015-12-09 中国石油大学(北京) Compression recycling method for evaporation gas of liquefied natural gas
CN105927848A (en) * 2016-04-20 2016-09-07 中国石油化工股份有限公司 Small device and method for rapidly re-liquefying and recovering liquefied natural gas vapour
CN106764417A (en) * 2016-12-20 2017-05-31 山东新兴重工科技发展有限公司 A kind of BOG recycling and processing devices

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Effective date of registration: 20200902

Granted publication date: 20121128

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Date of cancellation: 20220220

Granted publication date: 20121128

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121128

Termination date: 20200220