CN203533186U - Communication and connection structure for submerged pump pool in storage tank of LNG filling station - Google Patents
Communication and connection structure for submerged pump pool in storage tank of LNG filling station Download PDFInfo
- Publication number
- CN203533186U CN203533186U CN201320654660.2U CN201320654660U CN203533186U CN 203533186 U CN203533186 U CN 203533186U CN 201320654660 U CN201320654660 U CN 201320654660U CN 203533186 U CN203533186 U CN 203533186U
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- Prior art keywords
- storage tank
- valve
- tank
- immersed pump
- filling station
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- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000012530 fluid Substances 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003949 liquefied natural gas Substances 0.000 description 25
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A communication and connection structure for a submerged pump pool in a storage tank of an LNG filling station comprises the submerged pump pool which is arranged at the bottom of the storage tank and has an independent and sealed space, and a submerged pump arranged in the submerged pump pool, and is characterized in that a liquid filling pipe opening and a passage communicated with the storage tank through a plate turning valve are arranged in the top cover of the pump pool; a liquid charging opening communicated with a tank car through a shut-off valve is formed in the pump pool body; a branching pipeline connected with the liquid filling pipe opening is respectively communicated with the top part of the storage tank and a liquid inlet of a liquid filling machine through a stop valve and a switch valve. According to the communication and connection structure, with the submerged pump in the LNG storage tank, functions of discharging in the tank and charging from the outside the tank are realized, and on/off of the valves in the tank body can be controlled from the outside of the storage tank by a management person through the plate turning valve structure conveniently.
Description
Technical field
The utility model belongs to LNG apparatus field, relates to a kind of LNG filling station equipment, the particularly linkage structure in a kind of LNG filling station storage tank and immersed pump pond.
Background technique
Along with the fast development of gas industry, LNG(LNG Liquefied natural gas) as a kind of clean energy, in industry and civil area, be also developed rapidly, LNG filling station construction demand increases.LNG filling station equipment mainly comprises low-temperature storage tank and for user being completed to the LNG low temperature immersed pump of filling.
Low temperature immersed pump must be worked in LNG cryogenic, and its modes of emplacement mainly contains two kinds at present: a kind of is that immersed pump is placed among the cryogenic liquid within storage tank, and this mode immersed pump can only be realized to liquid filler liquid feeding.Immersed pump can also be placed in to independently pump pond in addition, build separately outside tank in pump pond, and a general immersed pump is only realized filling or function of drainage; Adopt in addition and need in this way pump pond to carry out cold insulation to prevent LNG gasification, construction and operating cost are high, and pipeline is complicated.
If LNG immersed pump and pump pond thereof are placed in storage tank, immersed pump is constantly in low-temperature condition, and outside feed flow at any time after startup, does not exist precooling process.But existing pump pond all only has a liquid entering hole, can only be from storage tank to pump pond feed liquor by immersed pump to liquid filler liquid feeding, cannot realize by same immersed pump to storage tank drainage.And LNG is inflammable, explosion hazard gases, the valve from storage tank to pump pond feed liquor pipeline can not adopt common electric control valve, cannot be easily from the switching of pump pond liquid flowing valve in storage tank external control tank.Therefore, for LNG filling station, in the urgent need to a kind of, can realize unloading and the outer tank pump linkage structure of annotating of tank in tank by the immersed pump being built in LNG storage tank, and the valve that facilitates administrative staff to control outside tank.
Summary of the invention
The utility model is in order to utilize the immersed pump being built in LNG storage tank to realize unloading and the outer function of annotating of tank in tank, and facilitate administrative staff to control the conversion of valve in tank outward at tank, designed immersed pump pond in a kind of LNG filling station storage tank logical, link structure.
The technical solution of the utility model is: logical, the link structure in immersed pump pond in a kind of LNG filling station storage tank, structure comprises and is arranged on immersed pump tank bottom, that have independent enclosed space pond, be in the immersed pump in pond, key is: the passage that is provided with the fluid injection mouth of pipe, is communicated with storage tank by Flap valve on the top cover of pump pond, is provided with the implementation of port that is communicated with tank car by shut-off valve on the body of pump pond; The branch line being connected on the fluid injection mouth of pipe is communicated with tank top and liquid filler liquid entering hole by stop valve and changing valve respectively.
The beneficial effects of the utility model are: 1, on immersed pump pond, be designed with the fluid injection mouth of pipe that is communicated with tank car and storage tank respectively and passage and respectively to the branch line of storage tank and liquid filler topping up, so just can utilize the immersed pump being built in LNG storage tank to realize the function that in tank, unloading and tank are annotated outward; 2, utilize the quadratic crank mechanism of air cylinder driven to drive the Flap valve of ball face sealing to open and close, facilitate administrative staff to control the switching of valve in tank outward at tank.
Accompanying drawing explanation
Fig. 1 is linkage structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of Flap valve;
LNG when Fig. 3 is filling state flows to schematic diagram;
Fig. 4 is that the LNG while unloading to storage tank flows to schematic diagram;
In accompanying drawing, 1 represents shut-off valve, and 2 represent stop valve, 3 represent changing valve, and 4 represent Flap valve, and 4-1 represents valve port, 4-2 represents flap, 4-3 representative is positioned at the valve plate on lower rocking bar, and 5 represent immersed pump pond, and 5-1 represents the fluid injection mouth of pipe, 5-2 represents passage, 5-3 represents implementation of port, and 5-4 represents pump Chi Gai, and 6 represent storage tank, 6-1 represents tank top, 7 represent liquid filler, and 8 represent tank car, and 9 represent quadratic crank mechanism, the lower rocking bar of 9-1 representative, rocking bar in 9-2 representative, 10 represent cylinder, the direction of arrow represents the flow direction of LNG.
Embodiment
Logical, the link structure in immersed pump pond in a kind of LNG filling station storage tank, structure comprises and is arranged on storage tank immersed pumps 6 bottoms, that have independent enclosed space pond 5, be in the immersed pump in pond, key is: the passage 5-2 that be provided with fluid injection mouth of pipe 5-1 on the top cover 5-4 of pump pond, is communicated with by Flap valve 4 with storage tank 6, is provided with the implementation of port 5-3 that is communicated with tank car 8 by shut-off valve 1 on the body of pump pond; The branch line being connected on fluid injection mouth of pipe 5-1 is communicated with storage tank 6 tops and liquid filler 7 liquid entering holes by stop valve 2 and changing valve 3 respectively.
In order to realize the switching of Flap valve 4 in tank, quadratic crank mechanism 9 is placed in storage tank 6.The structure of Flap valve 4 comprises: spacing valve plate 4-3 on the lid 5-4 of pump pond, and supporting elastic seal ring is also positioned at the hemisphere flap 4-2 on valve plate 4-3, and is arranged on the valve port 4-1 in the lid 5-4 of pump pond; Valve plate 4-3 is hinged spacing on the lid 5-4 of pump pond by the lower rocking bar 9-1 in quadratic crank mechanism 9.Valve plate 4-3 drives flap 4-2 to coordinate with the switching of valve port 4-1 by waving of lower rocking bar 9-1.In quadratic crank mechanism, be also provided with rocking bar 9-2 and be hinged on the left and right connecting rod between two rocking bars.The cylinder 10 that is located at tank top 6-1 outside connects the keying that drives quadratic crank mechanism 9 to drive valve plate 4-3.
In order to make immersed pump constantly in low-temperature condition, the first half in immersed pump pond 5 is placed in storage tank 6 tank bodies, Lower Half is placed in storage tank 6 thermal insulating layers.
During concrete enforcement, during to liquid filler 7 liquid feeding, with reference to Fig. 3, shut-off valve 1 and stop valve 2 are closed, and changing valve 3 is opened, cylinder 10 is descending, by upper rocking bar 9-2, drive pull bar effect, pull Flap valve 4 to open, storage tank 6 is to immersed pump pond 5 feed liquors, by the driving of immersed pump, from fluid injection mouth of pipe 5-1, through branch line b, be connected the outside liquid feeding of liquid filler 7 with changing valve 3.
While unloading, with reference to Fig. 4, shut-off valve 1 and stop valve 2 are opened, and changing valve 3 cuts out, and cylinder 10 is up, by pull bar effect, globe disk 4-2 is pressed on the seal ring of valve port 4-1, and Flap valve 4 cuts out, tank car 8 through shut-off valve 1 to immersed pump pond 5 feed liquors, by the driving of immersed pump, from fluid injection mouth of pipe 5-1, through branch line a and the inside that is communicated with stop valve 2, lead to fluid injection in storage tank 6 head tube road direction tanks.
Claims (5)
- In a LNG filling station storage tank immersed pump pond logical, link structure, structure comprises and is arranged on immersed pump pond (5) storage tank (6) bottom, that have independent enclosed space, be in the immersed pump in pond, it is characterized in that: the passage (5-2) that be provided with the fluid injection mouth of pipe (5-1) on pump pond top cover (5-4), is communicated with by Flap valve (4) with storage tank (6), is provided with the implementation of port (5-3) that is communicated with tank car (8) by shut-off valve (1) on the body of pump pond; The branch line being connected on the fluid injection mouth of pipe (5-1) is communicated with storage tank (6) top and liquid filler (7) liquid entering hole by stop valve (2) and changing valve (3) respectively.
- 2. logical, the link structure in immersed pump pond in a kind of LNG filling station storage tank according to claim 1, is characterized in that: the first half in described immersed pump pond (5) is placed in storage tank (6) tank body, and Lower Half is placed in storage tank (6) thermal insulating layer.
- In a kind of LNG filling station storage tank according to claim 1 immersed pump pond logical, link structure, it is characterized in that: the pipeline a being connected on the fluid injection mouth of pipe (5-1) is communicated with spray LNG downwards with storage tank (6) head room through stop valve (2), and be connected with liquid filler (7) with changing valve (3) by branch line b.
- In a kind of LNG filling station storage tank according to claim 1 immersed pump pond logical, link structure, it is characterized in that: the structure of described Flap valve (4) comprising: spacing valve plate (4-3) on pump Chi Gai (5-4), supporting elastic seal ring is also positioned at the hemisphere flap (4-2) on valve plate (4-3), and is arranged on the valve port (4-1) in pump Chi Gai (5-4); Valve plate (4-3) is hinged spacing on pump Chi Gai (5-4) by the lower rocking bar (9-1) in quadratic crank mechanism (9).
- In a kind of LNG filling station storage tank according to claim 4 immersed pump pond logical, link structure, it is characterized in that: within described quadratic crank mechanism (9) is placed in storage tank (6), in structure, wrap rocking bar (9-2), lower rocking bar (9-1), is hinged on the left and right connecting rod between two rocking bars; Be located at the outside cylinder (10) of tank top (6-1) and connect the keying that drives quadratic crank mechanism (9) to drive valve plate (4-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654660.2U CN203533186U (en) | 2013-10-23 | 2013-10-23 | Communication and connection structure for submerged pump pool in storage tank of LNG filling station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654660.2U CN203533186U (en) | 2013-10-23 | 2013-10-23 | Communication and connection structure for submerged pump pool in storage tank of LNG filling station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203533186U true CN203533186U (en) | 2014-04-09 |
Family
ID=50419391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320654660.2U Expired - Lifetime CN203533186U (en) | 2013-10-23 | 2013-10-23 | Communication and connection structure for submerged pump pool in storage tank of LNG filling station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203533186U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523902A (en) * | 2016-12-20 | 2017-03-22 | 山东新兴重工科技发展有限公司 | Low-temperature liquid filling vehicle for built-in pump |
| CN108027108A (en) * | 2015-09-28 | 2018-05-11 | 瓦锡兰芬兰有限公司 | The fuel tank arrangement of marine ships |
| CN113357529A (en) * | 2021-06-06 | 2021-09-07 | 沈军 | Low-temperature storage tank and liquid hydrogen hydrogenation station formed by same |
-
2013
- 2013-10-23 CN CN201320654660.2U patent/CN203533186U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108027108A (en) * | 2015-09-28 | 2018-05-11 | 瓦锡兰芬兰有限公司 | The fuel tank arrangement of marine ships |
| CN108027108B (en) * | 2015-09-28 | 2019-09-10 | 瓦锡兰芬兰有限公司 | The fuel tank arrangement of marine ships |
| CN106523902A (en) * | 2016-12-20 | 2017-03-22 | 山东新兴重工科技发展有限公司 | Low-temperature liquid filling vehicle for built-in pump |
| CN113357529A (en) * | 2021-06-06 | 2021-09-07 | 沈军 | Low-temperature storage tank and liquid hydrogen hydrogenation station formed by same |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |
|
| CX01 | Expiry of patent term |