CN204647839U - LNG gas station unload pipeline, unload nitrogen debugging pipeline and gas station - Google Patents
LNG gas station unload pipeline, unload nitrogen debugging pipeline and gas station Download PDFInfo
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- CN204647839U CN204647839U CN201420857709.9U CN201420857709U CN204647839U CN 204647839 U CN204647839 U CN 204647839U CN 201420857709 U CN201420857709 U CN 201420857709U CN 204647839 U CN204647839 U CN 204647839U
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- connecting tube
- side interface
- gas station
- unload
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims description 106
- 239000007789 gas Substances 0.000 title claims description 61
- 229910052757 nitrogen Inorganic materials 0.000 title claims description 53
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 238000009792 diffusion process Methods 0.000 claims description 23
- 239000003949 liquefied natural gas Substances 0.000 description 35
- 238000003466 welding Methods 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000007789 sealing Methods 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000006200 vaporizer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model relates to one and to unload pipeline, particularly relate to a kind of liquid gas station to unload pipeline, comprise and unload liquid pipe, muffler, pressure inlet, each pipeline includes tank car side interface gentle station side interface, and each pipeline is all provided with cutting device near gas station side interface; It is characterized in that, on the pipeline between the tank car side interface of described muffler and pressure inlet and described cutting device, be installed the first connecting tube of both connections, described first connecting tube is provided with block valve; Described pressure inlet and on unloading between the tank car side interface of liquid pipe and described cutting device pipeline, is provided with the second connecting tube of both connections, described second connecting tube is provided with block valve.What the utility model provided unload, and pipeline is not only of many uses but also easy to operate, more pleasant, and improves the Security of pipeline of unloading greatly.
Description
Technical field
The utility model relates to one and to unload pipeline, particularly relate to a kind of LNG gas station unload pipeline, unload nitrogen debugging pipeline and gas station.
Background technique
LNG Liquefied natural gas is fast-developing in automobile industry as automotive fuel, and LNG gas station use amount is also swift and violent lifting.Pipeline of unloading in gas station occupies critical positions in the operation of gas station, the ratio had an accident at the place of unloading accounts for 70% of whole gas station accident, and normal gas station mostly needs 2 ~ 3 days or shorter time in operation, must unload once, the utilization rate of pipeline of unloading is very high.Therefore the place of unloading of each LNG gas station is the strict place controlled, and is mostly provided with concentration of natural gas detector and suddenly stops operating button.Along with the raising to gas station accident prevention understanding, higher, safer requirement be it is also proposed to pipeline of unloading.
Existing LNG gas station pipeline structure of unloading is shown in Fig. 2, there are three bye-passes in the structure shown here, be respectively LNG tank car and unload liquid pipe, LNG tank car muffler, LNG tank car pressure inlet, all charge and discharge rubber lined hose is included again in every bye-pass, above-mentioned three bye-passes have block valve V01, V02, V03 respectively, and have respectively and diffuse valve V11, V12, V13.First LNG Liquefied natural gas tank car connects charge and discharge rubber lined hose place flange and tank car flange when unloading liquid, ensure the correctness connected, because the pressure of tank car is lower than the pressure of storage tank when unloading, supercharging must be implemented to tank car, pressure difference reaches certain numerical value, could meet the condition of unloading liquid.Therefore first open block valve V02, V03 and carry out tank car supercharging, after certain pressure, open and pipeline unloads liquid block valve V01, the valve finally opened on tank car carries out unloading liquid.Unload after liquid completes, close the above block valve opened respectively, open every bye-pass and diffuse valve, diffused the every bye-pass of rear closedown and diffused valve, then remove charge and discharge rubber lined hose place flange, and carry out shutoff, the whole process of unloading completes.
The every bye-pass of existing pipeline of unloading all arranges diffusion valve, and same function opens and closes valve often, inconvenient operation.In dismounting charge and discharge rubber lined hose flange, pipeline easily enters air, or has the phenomenons such as natural gas leaking to occur, and easily causes the accident.When using liquid nitrogen medium to debug, band can only be used from the liquid nitrogen car of pressurization system, the supercharging vaporizer in station can not be utilized, have narrow limitation.
Summary of the invention
The utility model provides a kind of LNG gas station to unload pipeline, and the every bye-pass of existing pipeline of unloading all arranges diffusion valve, and same function opens and closes valve often, inconvenient operation.In dismounting charge and discharge rubber lined hose flange, pipeline easily enters air, or has the phenomenons such as natural gas leaking to occur, and easily causes the accident.When using liquid nitrogen medium to debug, band can only be used from the liquid nitrogen car of pressurization system, the supercharging vaporizer in station can not be utilized, have narrow limitation.The utility model provides a kind of LNG gas station to unload pipeline, and the object pipeline that is to make to unload is easy to operate, and greatly improves the Security of sheet of unloading, and of many uses.
For solving the problem, the utility model provides a kind of LNG gas station to unload pipeline, and comprise and unload liquid pipe, muffler, pressure inlet, each pipeline includes tank car side interface gentle station side interface, and each pipeline is all provided with cutting device near gas station side interface; It is characterized in that,
On pipeline between the tank car side interface of described muffler and pressure inlet and described cutting device, be installed the first connecting tube of both connections, described first connecting tube is provided with block valve;
Described pressure inlet and on unloading between the tank car side interface of liquid pipe and described cutting device pipeline, is provided with the second connecting tube of both connections, described second connecting tube is provided with block valve.
Based on above-mentioned design, also have a diffusion mouth, described diffusion mouth is on the pipeline between wherein arbitrary tank car side interface and described cutting device of described each pipeline.
Based on above-mentioned design, also have and fill nitrogen mouth, described in fill nitrogen mouth on the pipeline between wherein arbitrary tank car side interface and described cutting device of described each pipeline.
Based on above-mentioned design, described diffusion mouth is installed on unloading on liquid pipe between described second connecting tube and cutting device.
Based on above-mentioned design, described in fill on muffler that nitrogen mouth is installed between described first connecting tube and described second connecting tube.
Based on above-mentioned design, described diffusion mouth comprises third connecting pipe, and described third connecting pipe is provided with block valve.
Based on above-mentioned design, described in fill nitrogen mouth and comprised for the 4th connecting tube, described 4th connecting tube is provided with block valve.
Based on above-mentioned design, the tank car side interface of described each pipeline is all provided with charge and discharge rubber lined hose, and described charge and discharge rubber lined hose is removably connected by flange and described each pipeline and described tank car.
The utility model also provides a kind of LNG gas station to unload nitrogen debugging pipeline, and comprise and unload liquid pipe, muffler, pressure inlet, each pipeline includes tank car side interface gentle station side interface, and each pipeline is all provided with cutting device near gas station side interface; It is characterized in that,
On pipeline between the tank car side interface of described muffler and pressure inlet and described cutting device, be installed the first connecting tube of both connections, described first connecting tube is provided with block valve;
Described pressure inlet and on unloading between the tank car side interface of liquid pipe and described cutting device pipeline, is provided with the second connecting tube of both connections, described second connecting tube is provided with block valve.
Based on above-mentioned design, also have a diffusion mouth, described diffusion mouth is on the pipeline between wherein arbitrary tank car side interface and described cutting device of described each pipeline.
Based on above-mentioned design, also have and fill nitrogen mouth, described in fill nitrogen mouth on the pipeline between wherein arbitrary tank car side interface and described cutting device of described each pipeline.
Based on above-mentioned design, described diffusion mouth is installed on unloading on liquid pipe between described second connecting tube and cutting device.
Based on above-mentioned design, described in fill on muffler that nitrogen mouth is installed between described first connecting tube and described second connecting tube.
Based on above-mentioned design, described diffusion mouth comprises third connecting pipe, and described third connecting pipe is provided with block valve.
Based on above-mentioned design, described in fill nitrogen mouth and comprised for the 4th connecting tube, described 4th connecting tube is provided with block valve.
Based on above-mentioned design, the tank car side interface of described each pipeline is all provided with charge and discharge rubber lined hose, and described charge and discharge rubber lined hose is removably connected by flange and described each pipeline and described tank car.
Based on above-mentioned design, the utility model also provides a kind of LNG gas station, comprises unload pipeline or LNG gas station of LNG gas station as above and unloads nitrogen debugging pipeline.
In sum, the LNG gas station that the utility model provides unloads pipeline, described pressure inlet is provided with the second connecting tube both being communicated with and block valve with unloading between liquid pipe, the pipeline that makes to unload is free to select supercharging or unload liquid function, make the utility model not only be suitable for LNG to unload, and go for liquid nitrogen to unload, expand using scope, add the convenience of operation; Between described muffler and pressure inlet, be provided with the first connecting tube and the block valve of both connections, when first, second connecting tube connects, only need arrange diffusion mouth on arbitrary pipeline can diffuse three bye-passes, the convenience of the operation increased greatly; Arrange on arbitrary pipeline and fill nitrogen mouth, carry out the displacement of nitrogen to rock gas, not only prevent air from entering pipeline, but also can prevent there is remaining rock gas in pipeline, thus substantially increase Security.
Accompanying drawing explanation
Fig. 1 is that the utility model LNG unloads pipeline schematic diagram
Fig. 2 is that prior art LNG unloads pipeline schematic diagram
Embodiment
The exemplary embodiments embodying the utility model feature & benefits will describe in detail in the following description.Be understood that the utility model can have various changes in different embodiments, it neither departs from scope of the present utility model, and explanation wherein and to be shown in be use when explain in essence, and be not used to limit the utility model.
Below in conjunction with accompanying drawing, describe specific embodiment of the utility model in detail, as shown in Figure 1, the utility model provides a kind of LNG gas station to unload pipeline, comprises and unloads liquid pipe 1, muffler 2, pressure inlet 3.Above-mentioned each pipeline includes tank car side interface 4 gentle station side interface 5, and the tank car side interface 4 of each pipeline comprises flange 41 and charge and discharge rubber lined hose 42, and tank car side interface 4 is connected with the corresponding interface of tank car is dismountable by flange 41 and charge and discharge rubber lined hose 42.Certainly Placement is only citing use herein, and not for limiting the Placement of tank car side interface 4 and tank car, it also can be other other Placement well-known to those skilled in the art.Gas station side interface 5 connects by welding manner and is directly connected in gas station, can certainly be connected in above-mentioned gas station by alternate manner is dismountable, such as, be connected by Flange joint, socket joint connection, bonding connection or other Placement well-known to those skilled in the art.Consider that above-mentioned pipeline has certain pressure in use, so above-mentioned Placement also should have certain bearing capacity.
As shown in Figure 1, above-mentioned each pipeline is all provided with cutting device 6 near gas station side interface 5, and cutting device 6 is for controlling unlatching or the closedown of each pipeline.This cutting device 6 can be the valve member with On/Off function, also can be the valve member with automatic control function, or other well-known to those skilled in the art other can the control gear of pilot line On/Off, the utility model is not as limit.In the present embodiment, this cutting device 6 specifically can be a kind of valve, and the Placement between this cutting device 6 with each pipeline can be threaded, Flange joint and welding, or other other Placement well-known to those skilled in the art.Connection between cutting device 6 and pipeline should have sealing and have certain bearing capacity.
As shown in Figure 1, in the utility model one embodiment, also comprise one first connecting tube L1, this first connecting tube, L1 was between above-mentioned tank car side interface 4 and cutting device 6, and near the side of tank car side interface 4.Above-mentioned muffler 2 can be communicated with pressure inlet 3 by this first connecting tube L1, and its Placement can be Flange joint, welding or other Placement.And this first connecting tube L 1 is also provided with a block valve V1, this block valve V1 can be the valve member with On/Off function, also can be the valve member with automatic control function, or other well-known to those skilled in the art other can the control gear of pilot line On/Off, the utility model is not as limit.Specific in the present embodiment, this block valve V1 is a kind of valve, and it can control unlatching or the closedown of this first connecting tube L1.The Placement of block valve V1 and this first connecting tube L1 can for being threaded, Flange joint and welding, or other Placement well-known to those skilled in the art.Connection between block valve V1 and the first connecting tube L1 should have sealing and have certain bearing capacity.
As shown in Figure 1, in the utility model one embodiment, also comprise one second connecting tube L2, this second connecting tube L2 is between above-mentioned first connecting tube L1 and cutting device 6, the above-mentioned liquid pipe 1 that unloads can be communicated with pressure inlet 3 by this second connecting tube L2, and its Placement can be Flange joint, welding or other Placement.And this second connecting tube L2 is also provided with a block valve V2, this block valve V2 can be the valve member with On/Off function, also can be the valve member with automatic control function, or other well-known to those skilled in the art other can the control gear of pilot line On/Off, the utility model is not as limit.Specific in the present embodiment, this block valve V2 is a kind of valve, and it can control unlatching or the closedown of this second connecting tube L2.The Placement of block valve V2 and this second connecting tube L2 can for being threaded, Flange joint and welding, or other Placement well-known to those skilled in the art.Connection between block valve V2 and the second connecting tube L2 should have sealing and have certain bearing capacity.
As shown in Figure 1, in the utility model one embodiment, one diffusion mouth 7 comprises an a third connecting pipe L3 and block valve V3, this diffusion mouth 7 unloads on liquid pipe 1, on the arbitrary position that also can be installed on other pipeline between above-mentioned tank car side interface 4 gentle station side interface 5 of diffusion mouth 7 between above-mentioned second connecting tube L2 and cutting device 6.This third connecting pipe L3 is arranged to unload on liquid pipe 1 and be communicated with and unloads liquid pipe 1, and its Placement can be Flange joint, welding or other Placement.Block valve V3 is installed on third connecting pipe L3, for controlling unlatching or the closedown of this third connecting pipe L3, this block valve V3 can be the valve member with On/Off function, also can be the valve member with automatic control function, or other well-known to those skilled in the art other can the control gear of pilot line On/Off, the utility model is not as limit.Specific in the present embodiment, this block valve V3 is a kind of valve, and it can control unlatching or the closedown of this third connecting pipe L3.The Placement of block valve V3 and this third connecting pipe L3 can for being threaded, Flange joint and welding, or other Placement well-known to those skilled in the art.Connection between block valve V3 and third connecting pipe L3 should have sealing and have certain bearing capacity.
As shown in Figure 1, in the utility model one embodiment, one fills nitrogen mouth 8 comprises one a 4th connecting tube L4 and block valve V4, this fills on the muffler 2 of nitrogen mouth 8 between above-mentioned first connecting tube L1 and the second connecting tube L2, fills on the arbitrary position that also can be installed on other pipeline between above-mentioned tank car side interface 4 and cutting device 6 of nitrogen mouth 8.4th connecting tube L4 to be arranged on muffler 2 and to be communicated with muffler 2, and its Placement can be Flange joint, welding or other Placement; Block valve V4 is installed on the 4th connecting tube L4, for controlling unlatching or the closedown of the 4th connecting tube L4, this block valve V4 can be the valve member with On/Off function, also can be the valve member with automatic control function, or other well-known to those skilled in the art other can the control gear of pilot line On/Off, the utility model is not as limit.Specific in the present embodiment, this block valve V4 is a kind of valve, and it can control unlatching or the closedown of the 4th connecting tube L4.The Placement of block valve V4 and the 4th connecting tube L4 can for being threaded, Flange joint and welding, or other Placement well-known to those skilled in the art.Connection between block valve V4 and the 4th connecting tube L4 should have sealing and have certain bearing capacity.
As shown in Figure 1, in the utility model one embodiment, because LNG and LN2 belongs to low-temperature deep medium, therefore the material of above-mentioned each pipeline is the material (that is: 30408) of Austenitic Stainless Steel, each valve that pipeline configures and cutting device 6 are also cryogenic globe valve, unloading medium in liquid pipe 1 and pressure inlet 3 is that liquid phase needs to carry out isothermal holding, and muffler 2 medium is that gas phase does not need insulation.
In the present embodiment, unloading liquid mouth of pipe footpath is DN50, and cutting device 6 specification is DN50 cryogenic globe valve.Muffler and pressure inlet bore are DN40, and the specification of the cutting device 6 on above-mentioned two pipelines is DN40 cryogenic globe valve.Above-mentioned V1, V2, V3, V4 valve is cryogenic globe valve, each connecting tube bore be DN15, valve specification is DN15.
In the present embodiment, the material of gas station charge and discharge rubber lined hose 6 is stainless steel corrugated flexible hose, bore can according to the bore of above-mentioned each pipeline with above caliber, and stainless steel corrugated flexible hose one can be 6 meters long, and one end is fixed the other end by flange and can be put flexibly according to the difference of tank car position, install.
LNG unloads step
LNG tank car is arranged three interfaces, be respectively LNG inlet/outlet and gas phase mouth and boost port, it is corresponding and above-mentioned respectively unloads liquid pipe 1, muffler 2, pressure inlet 3 are connected, open above-mentioned muffler 2 and the cutting device 6 on pressure inlet 3, supercharging is carried out to LNG tank car, after reaching certain pressure in tank car, open the cutting device 6 unloading liquid pipe 1 and carry out unloading liquid.After unloading liquid and completing, close the cutting device 6 of above-mentioned each pipeline, open above-mentioned block valve V1, V2 and open above-mentioned diffusion mouth 7 and diffuse.Owing to being provided with first, second connecting tube in pipeline, making only to open single step of releasing raw edge 7 can carry out diffusing pipeline, greatly improves the convenience of operation and the pleasant property of pipeline.Nitrogen can also be filled by the above-mentioned nitrogen mouth 8 pairs of pipelines that fill after having diffused, use the LNG gas in nitrogen displacement pipeline, LNG gas is avoided to mix in pipeline with air, stop the generation of exploding, prevent the danger of natural gas leaking initiation fire, improve the Safety performance of pipeline greatly.As the pleasant property operated in the utility model, the nitrogen filled protection of the pipeline of unloading after unloading, all serves the safe operation of gas station and changes preventive effect in advance into by post.
LNG gas station liquid nitrogen car carries out unloading nitrogen and debugging step
Owing to liquid nitrogen car being arranged two interfaces, i.e. liquid nitrogen inlet/outlet and gas phase mouth, liquid pipe 1 can be unloaded with above-mentioned and muffler 2 is connected by corresponding for two interfaces, as long as now open above-mentioned block valve V2, namely be equivalent to be communicated with pressure inlet 3, namely an interface leads to two branch roads, selects supercharging still to unload the function of liquid freely.Not only such design can meet the demand of LNG tank car supercharging but also meet the function of liquid nitrogen car supercharging.Also solving when using liquid nitrogen medium to debug simultaneously, band can only be used from the liquid nitrogen car of pressurization system, the problem of supercharging vaporizer in station can not be utilized, expand using scope.When using the utility model embodiment to carry out liquid nitrogen test to LNG gas station, its interface mode is consistent with above-mentioned liquid nitrogen unloading way, and it specifically unloads liquid step and can refer to LNG and to unload step, is not repeating at this.
Although exemplary embodiment describe the utility model with reference to several, should be appreciated that term used illustrates and exemplary and nonrestrictive term.Specifically can implement in a variety of forms due to the utility model and not depart from spirit or the essence of model utility, so be to be understood that, above-described embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claim of enclosing, therefore fall into whole change in claim or its equivalent scope and remodeling and all should be claim of enclosing and contained.
Claims (17)
1. LNG gas station unloads a pipeline, and comprise and unload liquid pipe, muffler, pressure inlet, each pipeline includes tank car side interface gentle station side interface, and each pipeline is all provided with cutting device near gas station side interface; It is characterized in that,
On pipeline between the tank car side interface of described muffler and pressure inlet and described cutting device, be installed the first connecting tube of both connections, described first connecting tube is provided with block valve;
Described pressure inlet and on unloading between the tank car side interface of liquid pipe and described cutting device pipeline, is provided with the second connecting tube of both connections, described second connecting tube is provided with block valve.
2. LNG gas station as claimed in claim 1 unloads pipeline, and it is characterized in that also having a diffusion mouth, described diffusion mouth is on the pipeline between wherein arbitrary tank car side interface and described cutting device of described each pipeline.
3. LNG gas station as claimed in claim 2 unloads pipeline, it is characterized in that also having and fill nitrogen mouth, described in fill nitrogen mouth on the pipeline between wherein arbitrary tank car side interface and described cutting device of described each pipeline.
4. LNG gas station as claimed in claim 2 unloads pipeline, and it is characterized in that, described diffusion mouth is installed on unloading on liquid pipe between described second connecting tube and cutting device.
5. LNG gas station as claimed in claim 3 unloads pipeline, it is characterized in that, described in fill on muffler that nitrogen mouth is installed between described first connecting tube and described second connecting tube.
6. LNG gas station as claimed in claim 4 unloads pipeline, and it is characterized in that, described diffusion mouth comprises third connecting pipe, and described third connecting pipe is provided with block valve.
7. LNG gas station as claimed in claim 5 unloads pipeline, it is characterized in that, described in fill nitrogen mouth and comprised for the 4th connecting tube, described 4th connecting tube is provided with block valve.
8. the LNG gas station as described in as arbitrary in claim 1 to 7 unloads pipeline, and the tank car side interface of described each pipeline is all provided with charge and discharge rubber lined hose, and described charge and discharge rubber lined hose is removably connected by flange and described each pipeline and described tank car.
9. LNG gas station unloads a nitrogen debugging pipeline, and comprise and unload liquid pipe, muffler, pressure inlet, each pipeline includes tank car side interface gentle station side interface, and each pipeline is all provided with cutting device near gas station side interface; It is characterized in that,
On pipeline between the tank car side interface of described muffler and pressure inlet and described cutting device, be installed the first connecting tube of both connections, described first connecting tube is provided with block valve;
Described pressure inlet and on unloading between the tank car side interface of liquid pipe and described cutting device pipeline, is provided with the second connecting tube of both connections, described second connecting tube is provided with block valve.
10. LNG gas station as claimed in claim 9 unloads nitrogen debugging pipeline, and it is characterized in that also having a diffusion mouth, described diffusion mouth is on the pipeline between wherein arbitrary tank car side interface and described cutting device of described each pipeline.
11. LNG gas stations as claimed in claim 10 unload nitrogen debugging pipeline, it is characterized in that also having and fill nitrogen mouth, described in fill nitrogen mouth on the pipeline between wherein arbitrary tank car side interface and described cutting device of described each pipeline.
12. LNG gas stations as claimed in claim 10 unload nitrogen debugging pipeline, and it is characterized in that, described diffusion mouth is installed on unloading on liquid pipe between described second connecting tube and cutting device.
13. LNG gas stations as claimed in claim 11 unload nitrogen debugging pipeline, it is characterized in that, described in fill on muffler that nitrogen mouth is installed between described first connecting tube and described second connecting tube.
14. LNG gas stations as claimed in claim 12 unload nitrogen debugging pipeline, and it is characterized in that, described diffusion mouth comprises third connecting pipe, and described third connecting pipe is provided with block valve.
15. LNG gas stations as claimed in claim 13 unload nitrogen debugging pipeline, it is characterized in that, described in fill nitrogen mouth and comprised for the 4th connecting tube, described 4th connecting tube is provided with block valve.
16. as arbitrary in claim 9 to 15 as described in LNG gas station unload nitrogen debugging pipeline, the tank car side interface of described each pipeline is all provided with charge and discharge rubber lined hose, and described charge and discharge rubber lined hose is removably connected by flange and described each pipeline and described tank car.
17. 1 kinds of LNG gas stations, comprise as wherein arbitrary in claim 1 to 16 as described in unload pipeline or LNG gas station of LNG gas station unload nitrogen debugging pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857709.9U CN204647839U (en) | 2014-12-30 | 2014-12-30 | LNG gas station unload pipeline, unload nitrogen debugging pipeline and gas station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420857709.9U CN204647839U (en) | 2014-12-30 | 2014-12-30 | LNG gas station unload pipeline, unload nitrogen debugging pipeline and gas station |
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| CN204647839U true CN204647839U (en) | 2015-09-16 |
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