CN205137064U - Liquefied natural gas tank wagon that liquefied natural gas and CNG built station jointly device of unloading - Google Patents
Liquefied natural gas tank wagon that liquefied natural gas and CNG built station jointly device of unloading Download PDFInfo
- Publication number
- CN205137064U CN205137064U CN201520771809.4U CN201520771809U CN205137064U CN 205137064 U CN205137064 U CN 205137064U CN 201520771809 U CN201520771809 U CN 201520771809U CN 205137064 U CN205137064 U CN 205137064U
- Authority
- CN
- China
- Prior art keywords
- natural gas
- lng
- liquefied natural
- gas
- heat exchanger
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides an one end is connected with the 1st hose (2) of liquefied natural gas tank wagon that liquefied natural gas and CNG built station jointly device of unloading is CNG trunk line (17), the other end has connected gradually the 1st stop valve (3), relief pressure valve (5), the 1st check valve (8) and second hose (14), the gas exports of LNG storage tank (11) is connected through the low temperature gas feed of the 2nd stop valve (10) with heat exchanger (6), the low temperature gas outlet of heat exchanger (6) is connected with the import of empty thermoscope (7), the export of empty thermoscope (7) is connected with the import of compressor (4), the export of compressor (4) is connected with the gas access of heat exchanger (6), LNG storage tank inlet piping (18) one end loops through the access connection of the 3rd check valve (13) and the 3rd stop valve (12) and LNG storage tank (11), the 3rd hose (15) is connected to the other end. The utility model has the advantages of can reduce LNG gasification rate, not have the waste, the LNG tank wagon is unloaded conveniently.
Description
Technical field
The utility model belongs to a kind of unloading unit of LNG Liquefied natural gas tank car, is specifically related to LNG (LNG Liquefied natural gas) the tank car unloading unit that a kind of LNG (LNG Liquefied natural gas) and CNG (compressed natural gas) builds station jointly.
Background technique
Along with being on the increase of LNG (LNG Liquefied natural gas) automobile, drive the fast development of whole gas station industry, the unloading way of current LNG (LNG Liquefied natural gas) gas station has two kinds: immersed pump is unloaded and unloaded from supercharging.The feature of two kinds of unloading ways sees the following form.
Two kinds of method contrasts of unloading
With regard to order first two unloading way, in gas station actual motion, adopt is unloaded from supercharging more.LNG (LNG Liquefied natural gas) and CNG (compressed natural gas) builds jointly in station, and CNG (compressed natural gas) trailer unloads end of a period pressure at about 2.0MPa, and in trailer, still some rock gas is not utilized, and causes waste.
Summary of the invention
The purpose of this utility model is to provide one can reduce LNG (LNG Liquefied natural gas) rate of gasification, and without waste, unload LNG Liquefied natural gas and compressed natural gas easily of LNG tank car builds the LNG Liquefied natural gas tank car unloading unit at station jointly.
The utility model gives a kind of supercharging unloading way that can reduce LNG rate of gasification, decreases the use of immersed pump in process of simultaneously unloading, and compensate for the deficiency of existing two kinds of unloading ways.
Unloading unit of the present utility model, it comprises compressor (4), empty warm device (7), heat exchanger (6), LNG (LNG Liquefied natural gas) storage tank (11), flexible pipe, reduction valve, stop valve and pipeline, it is characterized in that one end of CNG (compressed natural gas) main pipeline 17 is connected with the 1st flexible pipe 2, the other end is connected with the 1st stop valve 3 in turn, reduction valve 5, 1st safety check 8 and the second flexible pipe 14, 2nd flexible pipe 14 is the outlet of CNG (compressed natural gas) main pipeline 17, and pipeline is connected by the 2nd check valve 9 with the gas outlet after the supercharging from heat exchanger 6 between the 1st safety check 8 and the 2nd flexible pipe 14, the gaseous phase outlet pipeline of LNG (LNG Liquefied natural gas) storage tank 11 is connected with the cryogenic gas import of heat exchanger 6 by the 2nd stop valve 10, the cryogenic gas outlet of heat exchanger 6 is connected with the import of sky temperature device 7, the outlet of empty warm device 7 is connected with the import of compressor 4, the outlet of compressor 4 is connected with the gas access of heat exchanger 6, LNG (LNG Liquefied natural gas) storage tank inlet pipeline 18 one end is connected with the import of the 3rd stop valve 12 with LNG (LNG Liquefied natural gas) storage tank 11 by the 3rd safety check 13 successively, and the other end connects the 3rd flexible pipe 15.
The application of the utility model unloading unit, comprises the steps:
(1) CNG (compressed natural gas) trailer 1 is connected with the 1st flexible pipe 2, LNG (LNG Liquefied natural gas) tank car is connected with the 2nd flexible pipe 14 and the 3rd flexible pipe 15 respectively, carry out preparation of unloading;
(2) when the pressure of LNG (LNG Liquefied natural gas) storage tank 11 is higher than 0.5MPa, open the 2nd stop valve 10 and the 3rd stop valve 12, BOG (flash steam) gas in LNG (LNG Liquefied natural gas) storage tank 11 by pipeline through heat exchanger 6, empty warm device 7, enter into compressor 4, heat exchanger 6 is again entered after compressor 4 supercharging, LNG (LNG Liquefied natural gas) tank car 16 is entered into after compressed natural gas temperature is reduced, for the supercharging of LNG (LNG Liquefied natural gas) tank car 16, thus the LNG (LNG Liquefied natural gas) in LNG (LNG Liquefied natural gas) tank car 16 is discharged in LNG (LNG Liquefied natural gas) storage tank 11,
(3) when the pressure in LNG (LNG Liquefied natural gas) storage tank 11 is lower than 0.3MPa, close the 2nd stop valve 10, open the 1st stop valve 3 and the 3rd stop valve 12, now make full use of the residual air pressure in CNG (compressed natural gas) trailer, by the CNG (compressed natural gas) in CNG (compressed natural gas) trailer by directly entering into LNG (LNG Liquefied natural gas) tank car 16 for the supercharging of LNG (LNG Liquefied natural gas) tank car, LNG (LNG Liquefied natural gas) in LNG (LNG Liquefied natural gas) tank car 16 is discharged into LNG (LNG Liquefied natural gas) storage tank 11, complete the process of unloading.
Above-mentionedly unload in step, when the pressure of LNG (LNG Liquefied natural gas) storage tank is lower than 0.3MPa, is switched to step (3) and unloads; When the pressure in LNG (LNG Liquefied natural gas) storage tank is higher than 0.5MPa, system automatically switches to step (2) and unloads.The switching of above-mentioned two kinds of situations is realized by robot control system(RCS).
The utility model patent has the following advantages:
1, decrease LNG (LNG Liquefied natural gas) to unload the rate of gasification of LNG (LNG Liquefied natural gas) in process;
2, diffusing of BOG gas in LNG (LNG Liquefied natural gas) storage tank is decreased;
3, the low-pressure gas in CNG (compressed natural gas) trailer is made full use of;
4, the cold in LNG (LNG Liquefied natural gas) storage tank is made full use of, reach energy-conservation object;
Accompanying drawing illustrates:
Fig. 1 is the utility model apparatus structure schematic diagram;
Schematic diagram when Fig. 2 is the use of the utility model device.
1 is CNG (compressed natural gas) trailer, 2 is the 1st flexible pipes, 3 is the 1st stop valves, 4 is compressors, and 5 is reduction valve, and 6 is heat exchangers, 7 is empty temperature devices, 8 is the 1st safety check, and 9 is second safety check, and 10 is the 2nd stop valves, 11 is LNG (LNG Liquefied natural gas) storage tanks, 12 the 2nd stop valves, 13 is the 3rd safety check, and 14 is the 2nd flexible pipes, 15 is the 3rd flexible pipes, 16 is LNG (LNG Liquefied natural gas) tank cars, and 17 is CNG (compressed natural gas) main pipelines, and 18 is LNG (LNG Liquefied natural gas) main pipelines.
Embodiment
The technical problem solved to make the utility model, the economic benefit brought is more directly perceived, below in conjunction with accompanying drawing, is described further the utility model.
Embodiment 1
Unloading unit of the present utility model, it comprises compressor (4), empty warm device (7), heat exchanger (6), LNG (LNG Liquefied natural gas) storage tank (11), flexible pipe, reduction valve, stop valve and pipeline, it is characterized in that one end of CNG (compressed natural gas) main pipeline 17 is connected with the 1st flexible pipe 2, the other end is connected with the 1st stop valve 3 in turn, reduction valve 5, 1st safety check 8 and the second flexible pipe 14, 2nd flexible pipe 14 is the outlet of CNG (compressed natural gas) main pipeline 17, and pipeline is connected by the 2nd check valve 9 with the gas outlet after the supercharging from heat exchanger 6 between the 1st safety check 8 and the 2nd flexible pipe 14, the gaseous phase outlet pipeline of LNG (LNG Liquefied natural gas) storage tank 11 is connected with the cryogenic gas import of heat exchanger 6 by the 2nd stop valve 10, the cryogenic gas outlet of heat exchanger 6 is connected with the import of sky temperature device 7, the outlet of empty warm device 7 is connected with the import of compressor 4, the outlet of compressor 4 is connected with the gas access of heat exchanger 6, LNG (LNG Liquefied natural gas) storage tank inlet pipeline 18 one end is connected with the import of the 3rd stop valve 12 with LNG (LNG Liquefied natural gas) storage tank 11 by the 3rd safety check 13 successively, and the other end connects the 3rd flexible pipe 15.
As shown in Figure 2, when CNG (compressed natural gas) trailer 1 is at the end of unloading, CNG (compressed natural gas) trailer 1 still about have pressure be the rock gas of 2MPa in trailer, the rock gas under this pressure in trailer 1 cannot utilize, and causes waste.The heat transfer of ambient air and LNG (LNG Liquefied natural gas) storage tank 11; the pressure of LNG (LNG Liquefied natural gas) storage tank 11 can be made to raise; usually can recycle by natural gas recycling device or reach certain pressure the rock gas of gasification in storage tank 11 and diffuse the pressure reducing storage tank; front a kind of mode causes the waste of cold, and rear a kind of mode causes the waste of cold and the energy.Adopt the unloading way from supercharging, easily cause the waste of cold, amount of vaporization is increased, reduce the effectively amount of unloading.
The application of unloading unit of the present invention, comprises the steps:
(1) CNG (compressed natural gas) trailer 1 is connected with the 1st flexible pipe 2, LNG (LNG Liquefied natural gas) tank car 16 is connected with the 2nd flexible pipe 14 and the 3rd flexible pipe 15 respectively, carry out preparation of unloading;
(2) when the pressure of LNG (LNG Liquefied natural gas) storage tank 11 is higher than 0.5MPa, open the 2nd stop valve 10 and the 3rd stop valve 12, BOG (flash steam) gas in LNG (LNG Liquefied natural gas) storage tank 11 carries out heat exchange by pipeline through heat exchanger 6, then enter into empty temperature device 7 to heat up, after being warming up to the inhalation temperature meeting compressor 4, enter compressor 4 and carry out supercharging, after compressor 4 supercharging, again enter heat exchanger 6 lower the temperature, LNG (LNG Liquefied natural gas) tank car 16 is entered into after compressed natural gas temperature is reduced, for the supercharging of LNG (LNG Liquefied natural gas) tank car 16, thus the LNG (LNG Liquefied natural gas) in LNG (LNG Liquefied natural gas) tank car 16 is discharged in LNG (LNG Liquefied natural gas) storage tank 11,
(3) when the pressure in LNG (LNG Liquefied natural gas) storage tank 11 is lower than 0.3MPa, close the 2nd stop valve 10, open the 1st stop valve 3 and the 3rd stop valve 12, now make full use of the residual air pressure in CNG (compressed natural gas) trailer 1, CNG (compressed natural gas) in CNG (compressed natural gas) trailer 1 is directly entered into LNG (LNG Liquefied natural gas) tank car 16 for the supercharging of LNG (LNG Liquefied natural gas) tank car 16, LNG (LNG Liquefied natural gas) in LNG (LNG Liquefied natural gas) tank car 16 is discharged into LNG (LNG Liquefied natural gas) storage tank 11, complete the process of unloading.
The source of the gas of unloading is not limited to the gas in storage tank and the gas in CNG (compressed natural gas) trailer, can also be that pipeline carrys out the modes such as gas, carry out atmospheric pressure judged whether to be unloaded by compressor boost by robot control system(RCS) according to pipeline.The method is not limited to unloading of LNG (LNG Liquefied natural gas), is also adapted to unloading of the cryogenic liquide such as liquid oxygen, liquid nitrogen.
Claims (1)
1. a LNG Liquefied natural gas and compressed natural gas build the LNG Liquefied natural gas tank car unloading unit at station jointly, it comprises compressor (4), empty warm device (7), heat exchanger (6), LNG liquefied natural gas (LNG) tank (11), flexible pipe, reduction valve, stop valve and pipeline, it is characterized in that one end of compressed natural gas main pipeline (17) is connected with the 1st flexible pipe (2), the other end is connected with the 1st stop valve (3) in turn, reduction valve (5), 1st safety check (8) and the second flexible pipe (14), the outlet that 2nd flexible pipe (14) is compressed natural gas main pipeline (17), and pipeline is connected by the 2nd check valve (9) with the gas outlet after the supercharging from heat exchanger (6) between the 1st safety check (8) and the 2nd flexible pipe (14), the gaseous phase outlet of liquefied natural gas (LNG) tank (11) is connected with the cryogenic gas import of heat exchanger (6) by the 2nd stop valve (10), the cryogenic gas outlet of heat exchanger (6) is connected with the import of sky temperature device (7), the outlet of empty warm device (7) is connected with the import of compressor (4), the outlet of compressor (4) is connected with the gas access of heat exchanger (6), liquefied natural gas (LNG) tank inlet pipeline (18) one end is connected with the import of liquefied natural gas (LNG) tank (11) with the 3rd stop valve (12) by the 3rd safety check (13) successively, the other end connects the 3rd flexible pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771809.4U CN205137064U (en) | 2015-09-30 | 2015-09-30 | Liquefied natural gas tank wagon that liquefied natural gas and CNG built station jointly device of unloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520771809.4U CN205137064U (en) | 2015-09-30 | 2015-09-30 | Liquefied natural gas tank wagon that liquefied natural gas and CNG built station jointly device of unloading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205137064U true CN205137064U (en) | 2016-04-06 |
Family
ID=55622856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520771809.4U Withdrawn - After Issue CN205137064U (en) | 2015-09-30 | 2015-09-30 | Liquefied natural gas tank wagon that liquefied natural gas and CNG built station jointly device of unloading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205137064U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179930A (en) * | 2015-09-30 | 2015-12-23 | 赛鼎工程有限公司 | Liquefied natural gas tank car unloading device of liquefied natural gas and compressed natural gas cooperative station and application |
| CN107676623A (en) * | 2017-11-06 | 2018-02-09 | 成都华气厚普机电设备股份有限公司 | A kind of differential LNG loading systems |
-
2015
- 2015-09-30 CN CN201520771809.4U patent/CN205137064U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179930A (en) * | 2015-09-30 | 2015-12-23 | 赛鼎工程有限公司 | Liquefied natural gas tank car unloading device of liquefied natural gas and compressed natural gas cooperative station and application |
| CN107676623A (en) * | 2017-11-06 | 2018-02-09 | 成都华气厚普机电设备股份有限公司 | A kind of differential LNG loading systems |
| CN107676623B (en) * | 2017-11-06 | 2023-08-22 | 厚普清洁能源(集团)股份有限公司 | Differential pressure type LNG filling system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105179930A (en) | Liquefied natural gas tank car unloading device of liquefied natural gas and compressed natural gas cooperative station and application | |
| CN107076358B (en) | It is unloaded with BOG accumulation of energy pressure difference LNG gas station, liquid feeding, re-liquefied and accumulation of energy method | |
| US5603360A (en) | Method and system for transporting natural gas from a pipeline to a compressed natural gas automotive re-fueling station | |
| CN112483886A (en) | Liquid hydrogen storage type hydrogenation device adopting liquid hydrogen pre-cooling | |
| CN111256028B (en) | Hydrogen filling system | |
| CN104197186B (en) | LNG gas station BOG recycling system and its implementation | |
| CN101975335A (en) | Reliquefaction device for boil-off gas from liquefied natural gas vehicle gas filling station | |
| CN110594579B (en) | Multifunctional hydrogen refueling station hydrogen fuel refueling system | |
| CN214249133U (en) | Liquid hydrogen storage type hydrogenation device adopting liquid hydrogen precooling | |
| CN105135208A (en) | Compression recycling method for evaporation gas of liquefied natural gas | |
| CN111928109A (en) | Boil-off gas recovery system of hydrogenation station | |
| CN205137064U (en) | Liquefied natural gas tank wagon that liquefied natural gas and CNG built station jointly device of unloading | |
| CN104763875A (en) | Liquid unloading method for liquefied natural gas or coal gas | |
| CN105020574A (en) | L-CNG gas station | |
| CN205560279U (en) | Dodge vapor recovery storage device | |
| WO2024183398A1 (en) | Liquid hydrogen pressurizing and refueling system cooperatively driven by work and heat | |
| CN207848959U (en) | A kind of LNG air supply systems | |
| CN206637250U (en) | A kind of BOG reclaims refueling system | |
| CN212537494U (en) | Discharging pressure regulating system applied to hydrogen storage type hydrogen adding station | |
| CN212298527U (en) | Boil-off gas recovery system of hydrogenation station | |
| CN202791322U (en) | LNG (liquefied natural gas) gasification station | |
| CN105318181A (en) | Movable liquefied natural gas (LNG) pump-free filling device | |
| CN205299067U (en) | Device that liquefied natural gas tank wagon high efficiency was unloaded | |
| CN216447916U (en) | Low temperature liquid is with device of unloading | |
| RU127166U1 (en) | GAS FILLING STATION |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160406 Effective date of abandoning: 20170919 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160406 Effective date of abandoning: 20170919 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |