CN203431496U - BOG recovery device of liquefied natural gas filling station - Google Patents
BOG recovery device of liquefied natural gas filling station Download PDFInfo
- Publication number
- CN203431496U CN203431496U CN201320535245.5U CN201320535245U CN203431496U CN 203431496 U CN203431496 U CN 203431496U CN 201320535245 U CN201320535245 U CN 201320535245U CN 203431496 U CN203431496 U CN 203431496U
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- Prior art keywords
- valve
- bog
- liquefied natural
- natural gas
- gas filling
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- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 27
- 238000011084 recovery Methods 0.000 title abstract 5
- 239000007789 gas Substances 0.000 claims abstract description 39
- 230000009467 reduction Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 238000012806 monitoring device Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a BOG recovery device of a liquefied natural gas filling station. A low-temperature emergency cut-off valve, a BOG carburetor, a low-temperature stop valve, a pressure reducing valve, a pressure gage, a pressure transmitter, a thermometer, a temperature transmitter, a safety relief valve and a check valve are sequentially connected to an inlet of a main pipe; the low-temperature stop valve is in parallel connection with a recuperator, and the pressure reducing valve is in parallel connection with a by-pass stop valve; the BOG recovery device further comprises a combustible gas alarm. The BOG recovery device has the advantages that the BOG recovery device saves energy and is simple in process and suitable for construction of gas filling stations, a skid-mounted structure is adopted, the occupied area is small, and the cost is low. The pipe is made of stainless steel materials, thereby being resistant to low temperature and corrosion. Various monitoring devices are arranged in the pipe, and therefore the safety performance is improved.
Description
Technical field
The utility model belongs to liquefied natural gas filling station equipment, particularly a kind of liquefied natural gas filling station BOG gas concentration unit.
Background technique
Rock gas is the emerging energy of clean and effective, the production of rock gas and use have tremendous development in China, with the obvious advantage because of it, LNG (LNG Liquefied natural gas) automobile is widely used at present, LNG (LNG Liquefied natural gas) automobile filling station large size is built, yet this type of filling station system can produce a large amount of BOG gas.BOG gas refers to the gas forming by after liquid natural gas gasification, and BOG is mainly derived from the gasification naturally of every day approximately 0.3% in LNG tank car return-air and LNG storage tank.This part BOG, as discharged not in time, can make the pressure in LNG storage tank upper gaseous phase space raise.
In prior art, BOG gas generally all discharges sky, or processes by torch burning, causes the wasting of resources.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of liquefied natural gas filling station equipment, is especially applicable to the recovering device of liquefied natural gas filling station BOG gas.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of liquefied natural gas filling station BOG gas concentration unit, is connected with low temperature Emergeny Cutoff Valves, BOG heat booster, cryogenic globe valve, reduction valve, pressure gauge, pressure transmitter, thermometer, temperature transmitter, Safety relief valve and safety check in turn in the ingress of main pipeline; Described cryogenic globe valve is parallel with a recuperator, and described reduction valve is parallel with a bypass stop valve; Also comprise a flammable gas alarm.
Further, described BOG heat booster is air temperature type BOG heat booster.
Further, described recuperator is electrothermal water bath type recuperator.
Further, the import of described electrothermal water bath type recuperator and outlet are respectively provided with a valve.
Further, the two ends of described reduction valve are respectively provided with a valve.
Further, described pressure gauge is provided with a valve on the pipeline being connected with main pipeline.
Further, described pressure transmitter is provided with a valve on the pipeline being connected with main pipeline.
Further, described Safety relief valve is provided with a valve on the pipeline being connected with main pipeline.
Advantage and the good effect that the utlity model has are: owing to adopting technique scheme,
1, this device technique simple, be applicable to gas station construction, floor space is little, cost is low.
2, in device, pressure, temperature and flammable gas alarm etc. carry out automation control, guarantee safety in utilization.
3, the employing stainless steel that originally installs pipes is furnished with electrothermal water bath type recuperator simultaneously, is applicable to northern area use in winter.
4, with temperature, pressure is on-the-spot, show, with Safety relief valve assurance device safety.
5, outlet is provided with safety check, prevents that pipeline gas from refluxing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment
In figure:
1, low temperature Emergeny Cutoff Valves 2, air temperature type BOG heat booster 3, cryogenic globe valve
4, valve 5, bypass cutoff valve 6, pressure gauge
7, pressure transmitter 8, thermometer 9, temperature transmitter
10, Safety relief valve 11, safety check 12, flammable gas alarm
13, reduction valve 14, electrothermal water bath type recuperator 15, flange
Embodiment
As shown in Figure 1, the present embodiment is a kind of liquefied natural gas filling station BOG gas concentration unit, starts to be connected with in turn low temperature Emergeny Cutoff Valves 1, air temperature type BOG heat booster 2, cryogenic globe valve 3, reduction valve 13, pressure gauge 6, pressure transmitter 7, thermometer 8, temperature transmitter 9, Safety relief valve 10 and safety check 11 in main pipeline ingress; Cryogenic globe valve 3 is parallel with an electrothermal water bath type recuperator 14, and reduction valve 13 is parallel with a bypass stop valve 5; Also comprise a flammable gas alarm 12.The import of electrothermal water bath type recuperator 14 and outlet are respectively provided with a valve 4.The two ends of reduction valve 13 are respectively provided with a valve 4.On the pipeline that pressure gauge 6, thermometer 8, Safety relief valve 10 are connected with main pipeline, be all respectively provided with a valve 4.
The working procedure of this example: BOG gas enters air temperature type BOG heat booster 2 by main pipeline, if the gas after heating does not reach temperature requirement, cryogenic globe valve 3 is closed, BOG gas enters electrothermal water bath type recuperator 14, according to water temperature and the start and stop of water level signal automatic control electrical heating rod, make water temperature and water level keep constant.BOG gas continues, by reduction valve 13, pressure gauge 6, pressure transmitter 7, thermometer 8, temperature transmitter 9, to carry out the monitoring of pressure, temperature, monitors qualified gas and by Safety relief valve 10 and safety check 11, reclaims.
When temperature or pressure exceed standard, occur when dangerous, can open Safety relief valve 10 and carrying out diffusing of portion gas, guarantee the safety of package unit.The safety check 11 of main pipeline outlet, can prevent that pipeline gas from refluxing.Also include a flammable gas alarm 12 and play monitoring effect.In device, the signal is far passed such as pressure, temperature and flammable gas alarm 12 is to central control system, and any point numerical value exceeds standard, central control system automatic feedback signal cut device portal low temperature Emergeny Cutoff Valves 1, the safety of protection package unit.Air temperature type BOG heat booster 2 two ends are flexibly connected with main pipeline by flange 15, are convenient to dismounting and repair and replacement.The bypass cutoff valve 5 in parallel with reduction valve 13 can cut out the rear dismounting maintenance of valve 4 at reduction valve 13 two ends when reduction valve 13 breaks down, and makes gas pass through main pipeline from bypass cutoff valve 5, do not affect the use of complete equipment.
This device technique is simple, be applicable to gas station construction, adopts skid-mounted structure, and floor space is little, and cost is low.Pipeline adopts stainless steel, low temperature resistant, anticorrosive, is furnished with multiple monitoring device in pipeline, has improved Safety performance.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (8)
1. a liquefied natural gas filling station BOG gas concentration unit, is characterized in that: the ingress on main pipeline is connected with low temperature Emergeny Cutoff Valves, BOG heat booster, cryogenic globe valve, reduction valve, pressure gauge, pressure transmitter, thermometer, temperature transmitter, Safety relief valve and safety check in turn; Described cryogenic globe valve is parallel with a recuperator, and described reduction valve is parallel with a bypass stop valve; Also comprise a flammable gas alarm.
2. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, is characterized in that: described BOG heat booster is air temperature type BOG heat booster.
3. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, is characterized in that: described recuperator is electrothermal water bath type recuperator.
4. liquefied natural gas filling according to claim 3 station BOG gas concentration unit, is characterized in that: the import of described electrothermal water bath type recuperator and outlet are respectively provided with a valve.
5. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, is characterized in that: the two ends of described reduction valve are respectively provided with a valve.
6. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, is characterized in that: described pressure gauge is provided with a valve on the pipeline being connected with main pipeline.
7. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, is characterized in that: described pressure transmitter is provided with a valve on the pipeline being connected with main pipeline.
8. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, is characterized in that: described Safety relief valve is provided with a valve on the pipeline being connected with main pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320535245.5U CN203431496U (en) | 2013-08-28 | 2013-08-28 | BOG recovery device of liquefied natural gas filling station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320535245.5U CN203431496U (en) | 2013-08-28 | 2013-08-28 | BOG recovery device of liquefied natural gas filling station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203431496U true CN203431496U (en) | 2014-02-12 |
Family
ID=50060533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320535245.5U Expired - Fee Related CN203431496U (en) | 2013-08-28 | 2013-08-28 | BOG recovery device of liquefied natural gas filling station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203431496U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319350A (en) * | 2019-07-15 | 2019-10-11 | 西南石油大学 | A kind of recovery process that gas phase ethane pipeline is dropped a hint and device |
| CN110529731A (en) * | 2019-09-03 | 2019-12-03 | 江苏鼎程新能源科技有限公司 | A kind of Intelligent skid-mounted liquefied natural gas tank car BOG recyclable device |
| CN113983348A (en) * | 2021-11-16 | 2022-01-28 | 江南造船(集团)有限责任公司 | Liquid nitrogen constant-temperature subcooler for LNG (liquefied Natural gas) filling |
-
2013
- 2013-08-28 CN CN201320535245.5U patent/CN203431496U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319350A (en) * | 2019-07-15 | 2019-10-11 | 西南石油大学 | A kind of recovery process that gas phase ethane pipeline is dropped a hint and device |
| CN110319350B (en) * | 2019-07-15 | 2021-04-13 | 西南石油大学 | Recovery process and device for gas-phase ethane pipeline vent gas |
| CN110529731A (en) * | 2019-09-03 | 2019-12-03 | 江苏鼎程新能源科技有限公司 | A kind of Intelligent skid-mounted liquefied natural gas tank car BOG recyclable device |
| CN110529731B (en) * | 2019-09-03 | 2024-04-19 | 江苏鼎程新能源科技有限公司 | BOG recovery device of intelligent skid-mounted liquefied natural gas tank car |
| CN113983348A (en) * | 2021-11-16 | 2022-01-28 | 江南造船(集团)有限责任公司 | Liquid nitrogen constant-temperature subcooler for LNG (liquefied Natural gas) filling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20150828 |
|
| EXPY | Termination of patent right or utility model |