CN203836578U - Natural gas liquid-feeding device - Google Patents
Natural gas liquid-feeding device Download PDFInfo
- Publication number
- CN203836578U CN203836578U CN201420222068.XU CN201420222068U CN203836578U CN 203836578 U CN203836578 U CN 203836578U CN 201420222068 U CN201420222068 U CN 201420222068U CN 203836578 U CN203836578 U CN 203836578U
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- CN
- China
- Prior art keywords
- liquid
- valve
- road
- branch road
- feed liquor
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- 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
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Abstract
The utility model discloses a natural gas liquid-feeding device. The natural gas liquid-feeding device comprises a liquid feeding station which is provided with at least one liquid feeding pump; each liquid feeding pump is connected with at least one liquid feeder; the liquid feeder comprises a liquid return pipeline and a liquid inlet pipeline; the liquid return pipeline is communicated with the liquid inlet pipeline by virtue of a backflow branch; a liquid inlet stop valve is arranged at the liquid inlet end of the liquid inlet pipeline; a gas filling gun is connected to the liquid feeding end of the liquid inlet pipeline. When one liquid feeder is under the working condition, the liquid inlet stop valve at the liquid inlet of one liquid feeder in the standby state can be automatically closed so as to prevent LNG (Liquefied Natural Gas) flow from short-circuiting, and the liquid feeding efficiency of the liquid feeder in the liquid feeding state is improved; when all the liquid feeders are in the standby state, the liquid inlet stop valves of all the liquid feeders are opened to protect a flowmeter.
Description
Technical field
The utility model relates to rock gas liquid feeding field, relates in particular to a kind of rock gas liquid-adding device.
Background technique
In the situation that the current energy is day by day nervous, reserves are huge, clean, rock gas has become the energy most with prospects after oil and industrial chemicals efficiently.LNG liquid filling station system is for storing, sell the minimum unit of the LNG energy.
Tradition LNG liquid feeding system is in order to protect flowmeter, and liquid filler can be closed liquid feeding cut-off valve under standby mode, opens backflow cut-off valve, is carved with the LNG flowmeter of flowing through while guaranteeing.This LNG liquid filler in the LNG liquid feeding system of 1 pump 1 machine and no problem, but in the LNG liquid feeding system of 1 pump multimachine, there will be problem.For example, 1 liquid filler in the LNG liquid feeding system of 1 pump multimachine is during just at liquid feeding, and other liquid filler is in standby mode, and the backflow cut-off valve of the liquid filler under standby mode is opened.Because the inlet hydraulic of all liquid fillers is identical, under standby mode, the reflux valve of liquid filler is all opened, and can cause the liquid flow short-circuit of LNG, and most of LNG liquid fails to be convened for lack of a quorum and flows back in system by backflow cut-off valve, thereby cause just too small at the liquid filler LNG of liquid feeding flow, liquid feeding inefficiency.
Model utility content
In view of above-mentioned the deficiencies in the prior art, a kind of rock gas liquid-adding device that the utility model provides, to improve the liquid feeding efficiency of 1 pump multimachine.
For solving the problems of the technologies described above, the utility model scheme comprises:
A kind of rock gas liquid-adding device, it comprises liquid filling station, wherein, described liquid filling station is provided with at least one fluid filling pump, each fluid filling pump is connected with at least one liquid filler, described liquid filler comprises a liquid return pipe Lu Yuyi feed liquor pipeline, liquid return pipe road is connected by a backflow branch road with feed liquor pipeline, on backflow branch road, be provided with the first safety check and backflow cut-off valve, on liquid return pipe road, be provided with aerating seat, liquid return pipe road is provided with the second safety check on the one end that is provided with aerating seat, on liquid return pipe road between the second safety check and backflow branch road, access a return-air gun barrel road, return-air gun barrel road is connected with return-air rifle, on return-air gun barrel road, be provided with the 3rd safety check, the liquid feeding end of feed liquor pipeline is provided with liquid entering hole cut-off valve, and the liquid feeding end of feed liquor pipeline is connected with an air filling gun.
Described rock gas liquid-adding device, wherein, on feed liquor pipeline, from liquid feeding end to liquid feeding end, be disposed with safe branch road, flowmeter, liquid feeding cut-off valve, pressurization branch road, on safe branch road, be provided with the first stop valve and safety valve, the joint of backflow branch road and feed liquor pipeline is between flowmeter and liquid feeding cut-off valve, on pressurization branch road, be provided with the second stop valve and pressure transmitter, on the feed liquor pipeline at liquid feeding cut-off valve two ends, access a loop pipe, in loop pipe, be provided with the 3rd safety check.
A kind of rock gas liquid-adding device that the utility model provides, when liquid filler in running order lower time, can automatically close the liquid entering hole cut-off valve at the liquid filler liquid entering hole place in holding state, thereby prevent LNG flow short-circuit, improve in adding the liquid feeding efficiency of the liquid filler of liquid status; When all liquid fillers are all in holding state lower time, the liquid entering hole cut-off valve of all liquid fillers is opened, thus protection flowmeter.
Accompanying drawing explanation
Fig. 1 is the structural representation of liquid filler in the utility model;
Fig. 2 is the schematic diagram of rock gas liquid-adding device in holding state in the utility model;
Fig. 3 is the schematic diagram that in the utility model, rock gas liquid-adding device only has the standby of a liquid filler work residue liquid filler.
Embodiment
The utility model provides a kind of rock gas liquid-adding device, for making the purpose of this utility model, technological scheme and effect clearer, clear and definite, below the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of rock gas liquid-adding device, as Fig. 1, shown in Fig. 2 and Fig. 3, it comprises liquid filling station, wherein, described liquid filling station is provided with at least one fluid filling pump, each fluid filling pump is connected with at least one liquid filler 1, described liquid filler 1 comprises a liquid return pipe road 2 and a feed liquor pipeline 3, liquid return pipe road 2 is connected by a backflow branch road 4 with feed liquor pipeline 3, on backflow branch road 4, be provided with the first safety check 5 and backflow cut-off valve 6, on liquid return pipe road 2, be provided with aerating seat 7, liquid return pipe road 2 is provided with the second safety check 8 being provided with on 7 one end of aerating seat, on liquid return pipe road 2 between the second safety check 8 and backflow branch road 4, access a return-air gun barrel road 9, return-air gun barrel road 9 is connected with return-air rifle, on return-air gun barrel road 9, be provided with the 3rd safety check 10, the liquid feeding end of feed liquor pipeline 3 is provided with liquid entering hole cut-off valve 11, and the liquid feeding end of feed liquor pipeline 3 is connected with an air filling gun.
Further, on feed liquor pipeline 3, from liquid feeding end to liquid feeding end, be disposed with safe branch road 12, flowmeter 13, liquid feeding cut-off valve 14, pressurization branch road 15, on safe branch road 12, be provided with the first stop valve 16 and safety valve 17, the joint of backflow branch road 4 and feed liquor pipeline 3 is between flowmeter 13 and liquid feeding cut-off valve 14, on pressurization branch road 15, be provided with the second stop valve 18 and pressure transmitter 19, on the feed liquor pipeline at liquid feeding cut-off valve 14 two ends, access a loop pipe 20, in loop pipe 20, be provided with the 3rd safety check 21.
Under its concrete operation:
As shown in Figure 2, in figure, be filled with the valve of black for closing, do not fill the valve of black for opening, the flow direction of direction of arrow express liquid rock gas, obvious, the rock gas liquid-adding device in the utility model can arrange a plurality of liquid fillers 1.In rock gas liquid-adding device, all liquid fillers 1 are when holding state, and all liquid entering hole cut-off valves 11 are all opened, and liquid feeding cut-off valve 14 Close Alls have guaranteed the normal standby of rock gas liquid-adding device.
When the liquid filler 1 in rock gas liquid-adding device starts liquid feeding, as shown in Figure 3, in figure, be filled with the valve of black for closing, do not fill the valve of black for opening, the flow direction of direction of arrow express liquid rock gas, obvious, the rock gas liquid-adding device in the utility model can arrange a plurality of liquid fillers 1.The liquid entering hole cut-off valve 11, the liquid feeding cut-off valve 14 that carry out in the liquid filler 1 of liquid feeding are all opened, liquid entering hole cut-off valve 11 in residue liquid filler, liquid feeding cut-off valve 14 be Close All, guaranteed in residue liquid filler the formation short circuit that can not reflux of LNG liquid, and then make fluid filling pump provide sufficient liquid natural gas by the smooth liquid filler 1 to work, improved the liquid feeding efficiency of liquid filler, further description is, only have the corresponding valve opening in the liquid filler of working state, the corresponding valve in idle liquid filler is closed.And all liquid fillers are all when holding state, the corresponding valve in each liquid filler is all opened.
Obvious, in order to realize the full-automation of said process, can configure a plurality of sensors and corresponding control system, but it does not belong to the utility model emphasis description scheme, at this, is not repeating one by one yet.
Certainly; more than explanation is only preferred embodiment of the present utility model; the utility model is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this specification; that makes is allly equal to alternative, obvious variant, within all dropping on the essential scope of this specification, ought to be subject to protection of the present utility model.
Claims (2)
1. a rock gas liquid-adding device, it comprises liquid filling station, it is characterized in that, described liquid filling station is provided with at least one fluid filling pump, each fluid filling pump is connected with at least one liquid filler, described liquid filler comprises a liquid return pipe Lu Yuyi feed liquor pipeline, liquid return pipe road is connected by a backflow branch road with feed liquor pipeline, on backflow branch road, be provided with the first safety check and backflow cut-off valve, on liquid return pipe road, be provided with aerating seat, liquid return pipe road is provided with the second safety check on the one end that is provided with aerating seat, on liquid return pipe road between the second safety check and backflow branch road, access a return-air gun barrel road, return-air gun barrel road is connected with return-air rifle, on return-air gun barrel road, be provided with the 3rd safety check, the liquid feeding end of feed liquor pipeline is provided with liquid entering hole cut-off valve, and the liquid feeding end of feed liquor pipeline is connected with an air filling gun.
2. rock gas liquid-adding device according to claim 1, it is characterized in that, on feed liquor pipeline, from liquid feeding end to liquid feeding end, be disposed with safe branch road, flowmeter, liquid feeding cut-off valve, pressurization branch road, on safe branch road, be provided with the first stop valve and safety valve, the joint of backflow branch road and feed liquor pipeline is between flowmeter and liquid feeding cut-off valve, on pressurization branch road, be provided with the second stop valve and pressure transmitter, on the feed liquor pipeline at liquid feeding cut-off valve two ends, access a loop pipe, in loop pipe, be provided with the 3rd safety check.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222068.XU CN203836578U (en) | 2014-04-30 | 2014-04-30 | Natural gas liquid-feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222068.XU CN203836578U (en) | 2014-04-30 | 2014-04-30 | Natural gas liquid-feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836578U true CN203836578U (en) | 2014-09-17 |
Family
ID=51514419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420222068.XU Expired - Fee Related CN203836578U (en) | 2014-04-30 | 2014-04-30 | Natural gas liquid-feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203836578U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359002A (en) * | 2014-09-30 | 2015-02-18 | 无锡特汇能源装备有限公司 | LNG dispenser |
-
2014
- 2014-04-30 CN CN201420222068.XU patent/CN203836578U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359002A (en) * | 2014-09-30 | 2015-02-18 | 无锡特汇能源装备有限公司 | LNG dispenser |
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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: 20140917 Termination date: 20150430 |
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| EXPY | Termination of patent right or utility model |