CN205299060U - System of LNG gas station - Google Patents
System of LNG gas station Download PDFInfo
- Publication number
- CN205299060U CN205299060U CN201620012372.0U CN201620012372U CN205299060U CN 205299060 U CN205299060 U CN 205299060U CN 201620012372 U CN201620012372 U CN 201620012372U CN 205299060 U CN205299060 U CN 205299060U
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- China
- Prior art keywords
- liquid
- storage tank
- lng
- inlet
- heat
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- 239000007788 liquid Substances 0.000 claims abstract description 81
- 239000000945 filler Substances 0.000 claims description 31
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000003949 liquefied natural gas Substances 0.000 description 35
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000011890 sandwich Nutrition 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a system of LNG gas station, includes storage tank, the pump pond that links to each other with the liquid outlet of this storage tank and the liquid adding machine who links to each other with the liquid outlet in this pump pond, this liquid adding machine's the inlet that returns liquid mouth and this storage tank links to each other, still include: indirect heating equipment, its cluster is established between the liquid outlet in this pump pond and this liquid adding machine's inlet to the cluster is established between the inlet of this liquid adding machine's time liquid mouth and this storage tank, is used for realizing the liquid of this storage tank and the heat exchange between the feed liquor. The utility model discloses be favorable to long -time safe preserve of LNG in the storage tank.
Description
Technical field
This utility model relates to storage and the conveyer device of fuel, especially relates to a kind of LNG filling gas station equipment.
Background technology
Along with LNG(liquefiednaturalgas, liquefied natural gas) the developing rapidly of industry, the construction of LNG gas station presents explosive growth. Referring to Fig. 1, existing LNG station system 10a generally comprises storage tank 1a, pump pond 2a and liquid filler 3a. Wherein, on-the-spot pipeline is longer, when liquid filler 3a works, needing effusion meter, liquid feeding rifle are carried out pre-cooling operation, pre-cold flow is generally: low temperature LNG flows out from the liquid outlet A of storage tank 1a, enters pump pond 2a via the inlet C of pump pond 2a, after the cryopump 21a inlet F being transported to liquid filler 3a, by effusion meter or liquid feeding rifle, flow out from the liquid return hole G of liquid filler 3a, flowed back in storage tank 1a through inlet B, J of storage tank 1a by pipeline. Now, the LNG liquid flowing back into storage tank 1a is high-temp liquid, and the heat that on-the-spot all devices, pipeline absorb from environment is all absorbed by the LNG in cyclic process, and brings storage tank 1a into, thus improve the temperature of LNG in storage tank 1a, having a strong impact on LNG and having stored duration and discharge capacity. For existing problem, it is thus proposed that a kind of improvement project, this improvement project specifically includes that the unified cold insulation performance improving pipeline, equipment, for instance: all adopt the vacuum heat-preserving forms of sandwichs. This improvement project, can cause being multiplied of cost, and the structure of vacuum heat-preserving can only ensure that heat-insulating property within the regular hour (being generally 5 years). Visible, it is necessary the structure of existing LNG station system is improved in fact.
Utility model content
Technical problem to be solved in the utility model is in that to overcome the deficiency existing for above-mentioned prior art, and proposes a kind of LNG station system, is conducive to the LNG long safe storage in storage tank.
This utility model proposes a kind of LNG station system for above-mentioned technical problem, and including storage tank, the pump pond being connected with the liquid outlet of this storage tank and the liquid filler that is connected with the liquid outlet in this pump pond, the liquid return hole of this liquid filler is connected with the inlet of this storage tank; Also including: heat-exchange apparatus, its string is located between liquid outlet and the inlet of this liquid filler in this pump pond, and string is located between the liquid return hole of this liquid filler and the inlet of this storage tank, for realizing the heat exchange between liquid and feed liquor of this storage tank.
In certain embodiments, this heat-exchange apparatus includes: first input port, is connected with the liquid outlet in this pump pond;Second input port, is connected with the liquid return hole of this liquid filler; First output port, is connected with the inlet of this liquid filler; And second output port, it is connected with the inlet of this storage tank.
Compared with prior art, LNG station system of the present utility model, by arranging heat-exchange apparatus dexterously, for realizing the heat exchange between liquid and feed liquor of storage tank, be conducive to the LNG long safe storage in storage tank.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing LNG station system.
Fig. 2 is the structural representation of LNG station system of the present utility model.
Wherein, description of reference numerals is as follows: 10aLNG station system 1a storage tank 2a pump pond 3a liquid filler 21a pump; 10LNG station system 1 storage tank 2 pump pond 3 liquid filler 4 heat-exchange apparatus 21 pump.
Detailed description of the invention
Below in conjunction with the accompanying drawing of this specification, preferred embodiment of the present utility model is given elaboration further.
Referring to the structural representation that Fig. 2, Fig. 2 are LNG station systems of the present utility model. The utility model proposes a kind of LNG station system 10, it generally comprises: storage tank 1; With the liquid outlet A of this storage tank 1 pump pond 2 being connected; The liquid filler 3 being connected with the liquid outlet in this pump pond 2, the liquid return hole F of this liquid filler 3 is connected with the inlet B/J of this storage tank 1; And heat-exchange apparatus 4, its string is located between the liquid outlet in this pump pond 2 and the inlet G of this liquid filler 3, and string is located between the liquid return hole F of this liquid filler 3 and the inlet B/J of this storage tank 1, for realizing the heat exchange between liquid and feed liquor of this storage tank 1.
Specifically, this heat-exchange apparatus 4 includes: first input port D, is connected with the liquid outlet in this pump pond 2; Second input port E, is connected with the liquid return hole F of this liquid filler 3; First output port H, is connected with the inlet G of this liquid filler 3; And the second output port I, it is connected with the inlet B/J of this storage tank 1. Wherein, the position higher than the two input port D, E, the position of the two output port H, I.
The operation principle of LNG station system 10 of the present utility model generally comprises:
1. liquid filler liquid feeding flow process: LNG flows out from the liquid outlet A of storage tank 1, pump pond 2 is entered through the inlet C in pump pond 2, it flow to the D mouth of heat-exchange apparatus 4 through the outlet of pump 21 to enter heat-exchange apparatus 4 and carry out heat exchange, flow out from the H mouth of heat-exchange apparatus 4, liquid filler 3 is entered from the G mouth of liquid filler 3, from air filling gun, LNG is added vehicle-mounted bottle, complete liquid feeding flow process. In this process, LNG from on-the-spot vapor return line, the low temperature LNG liquid constantly flowed out from storage tank 1 in heat-exchange apparatus 4 carries out heat exchange, the heat absorbed in on-the-spot vapor return line is taken away, ensure that pipeline will not absorb too much heat and produce too much BOG(boiledoffgas, flash steam).
2. the pre-cold flow of liquid filler: LNG flows out from the liquid outlet A of storage tank 1, pump pond 2 is entered through the inlet C in pump pond 2, the D mouth flowing to heat-exchange apparatus 4 through the outlet of pump 21 enters heat-exchange apparatus 4, flow out from the H mouth of heat-exchange apparatus 4, liquid filler 3 is entered from the G mouth of liquid filler 3, flow through effusion meter or liquid feeding rifle, flow out from the F mouth of liquid filler 3, through heat-exchange apparatus 4 E mouth enter heat-exchange apparatus 4 carry out heat exchange, flow out from the I mouth of heat-exchange apparatus 4, through B mouth or the J mouth entrance storage tank 1 of storage tank 1, complete pre-cold flow. In this process, from the high temperature LNG that on-the-spot pipeline flows back to, in heat-exchange apparatus 4, heat exchange is carried out with the low temperature LNG liquid flowed out from storage tank 1 so that the LNG temperature of liquid returning storage tank 1 reduces, and reduces the heat taking back storage tank 1.
Compared with prior art, LNG station system of the present utility model, by arranging heat-exchange apparatus 4 dexterously, for realizing the heat exchange between liquid and feed liquor of storage tank 1, solve the on-the-spot length of pipeline, the LNG in storage tank 1 is heated up by cold insulation performance, gasification, the directly affecting of discharge, effectively reduce LNG gasification and discharge capacity, ensure that LNG can safe storage for more time storage tank 1 in simultaneously; It addition, reduce the requirement of on-the-spot pipeline cold insulation performance, it is possible to substantially reduce field pipes wire material cost, reduce difficulty of construction, improve efficiency of construction, shorten construction period, hence it is evident that reduce construction cost.
Foregoing is only preferred embodiment of the present utility model; it is not intended to limit embodiment of the present utility model; those of ordinary skill in the art are according to central scope of the present utility model and spirit; corresponding flexible or amendment can be carried out very easily, therefore protection domain of the present utility model should be as the criterion with the protection domain required by claims.
Claims (2)
1. a LNG station system, including storage tank, the pump pond being connected with the liquid outlet of this storage tank and the liquid filler that is connected with the liquid outlet in this pump pond, the liquid return hole of this liquid filler is connected with the inlet of this storage tank; It is characterized in that, also include: heat-exchange apparatus, its string is located between liquid outlet and the inlet of this liquid filler in this pump pond, and string is located between the liquid return hole of this liquid filler and the inlet of this storage tank, for realizing the heat exchange between liquid and feed liquor of this storage tank.
2. according to the LNG station system described in claim 1, it is characterised in that this heat-exchange apparatus includes: first input port, is connected with the liquid outlet in this pump pond; Second input port, is connected with the liquid return hole of this liquid filler; First output port, is connected with the inlet of this liquid filler; And second output port, it is connected with the inlet of this storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620012372.0U CN205299060U (en) | 2016-01-07 | 2016-01-07 | System of LNG gas station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620012372.0U CN205299060U (en) | 2016-01-07 | 2016-01-07 | System of LNG gas station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205299060U true CN205299060U (en) | 2016-06-08 |
Family
ID=56486181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620012372.0U Active CN205299060U (en) | 2016-01-07 | 2016-01-07 | System of LNG gas station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205299060U (en) |
-
2016
- 2016-01-07 CN CN201620012372.0U patent/CN205299060U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |