CN204879436U - Built -in no bottom valve LNG pump well structure - Google Patents
Built -in no bottom valve LNG pump well structure Download PDFInfo
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- CN204879436U CN204879436U CN201520648806.1U CN201520648806U CN204879436U CN 204879436 U CN204879436 U CN 204879436U CN 201520648806 U CN201520648806 U CN 201520648806U CN 204879436 U CN204879436 U CN 204879436U
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- storage tank
- pump
- pipeline
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- lng
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Abstract
The utility model discloses a built -in no bottom valve LNG pump well structure belongs to LNG pump well field. The utility model discloses a pump well of built -in no bottom valve LNG pump well structure in locating the storage tank, be equipped with the immersed pump in the pump well, form the feed liquor chamber between the entrance point of immersed pump and the pump shaft bottom end, the pump is aboveground to be equipped with a plurality of stretching out to the outside pipeline of storage tank, the one end and the feed liquor chamber intercommunication of pipeline, the other end of pipeline communicates to the storage tank in from the storage tank outside, the pipeline is located and is equipped with a plurality of stop valves in the outside part of storage tank. The utility model discloses a built -in no bottom valve LNG pump well structure has simple structure, implements the simple installation, not only can maintain the immersed pump at any time, also can maintain the valve that communicates between control storage tank and the pump well at any time, to reduce LNG extravagant by a wide margin, does not have the characteristics of threat to maintenance personal's safety.
Description
Technical field
The utility model relates to a kind of LNG pump well construction, particularly a kind of built-in without bottom valve LNG pump well construction.
Background technique
Large-scale LNG storage tank generally build underground in, and storage tank is higher than liquid level with the connection part of outside pipeline.For this storage tank, outwards during conveying LNG, immersed pump must be adopted.Immersed pump is arranged on the bottom of storage tank usually, and for the ease of maintenance pump, prior art is for each pump arranges a vertical tube, is referred to as " pump sump ".Immersed pump is arranged on the bottom of pump sump, and storage tank and pump sump are separated by one, bottom valve, are referred to as " bottom valve ".The base of pump is positioned at above bottom valve, and when pump is installed to after on base, rely on the Action of Gravity Field of pump by valve open, pump sump is communicated with LNG storage tank.If by pump take out maintenance, valve just loses pump Action of Gravity Field, in the active force and storage tank of spring static pressure acting in conjunction under, make valve closing, serve the effect isolated in storage tank space and pump sump space.
Although the design of prior art is convenient, immersed pump is keeped in repair, but when bottom valve fault, mention immersed pump and also cannot close being communicated with of storage tank and pump sump, on-call maintenance cannot be carried out to immersed pump, if be only provided with a pump in storage tank, so just can only be emptying by the LNG in storage tank, cause the waste of a large amount of LNG; Bottom valve also cannot carry out maintain and replace at any time; When keeping in repair bottom valve, maintenance man needs to be deep into pump sump inside, not only inconvenient but also larger to the security presence of maintenance man threat.
Model utility content
Model utility object of the present utility model is: for above-mentioned Problems existing, provides a kind of structure simple, implements simple installation; Can not only keep in repair immersed pump at any time, also can keep in repair with the valve be communicated with between pump sump control storage tank at any time; Significantly reduce LNG waste, to maintenance man's safety without the without bottom valve pump sump threatened.
The technical solution adopted in the utility model is as follows:
Built-in without bottom valve LNG pump well construction of the present utility model, comprises the pump sump be located in storage tank, is provided with immersed pump in described pump sump, form admission chamber between the entrance point of described immersed pump and pump sump bottom; Described pump sump is provided with some pipelines extending out to storage tank outside, and one end of described pipeline is communicated with admission chamber, and the other end of described pipeline is from storage tank ft connection in storage tank; The part that described pipeline is positioned at storage tank outside is provided with some stop valves.
Owing to have employed said structure, control pump sump and move on to storage tank outside with the stop valve be communicated with between storage tank, when needs keep in repair immersed pump, close stop valve from outside and namely can disconnect being communicated with between pump sump with storage tank, now immersed pump is hung out well and can keep in repair immersed pump outward; Pump sump structure is simple, implements simply easy for installation, has extremely strong practicability; Stop valve is arranged on outside pump sump and storage tank, and controlling component can be made to be separated with reservoir part, reduces possibility operator being caused to security incident.
Built-in without bottom valve LNG pump well construction of the present utility model, described pump sump bottom is sealing configuration, and described pipeline is communicated with admission chamber on the bottom surface and/or sidewall of pump sump.
Owing to have employed said structure, what ensure that between pump sump and storage tank is isolated, avoid LNG from storage tank to pump sump seepage, reduce the waste of LNG.
Built-in without bottom valve LNG pump well construction of the present utility model, described pipeline one end be positioned at outside storage tank is connected to storage tank bottom surface; And/or described pipeline one end be positioned at outside storage tank is connected to the side of storage tank, is provided with the inner suction pipe be connected with this pipeline in described storage tank, described inner suction pipe extends the inner bottom part of storage tank.
Owing to have employed said structure, pipeline connects tank bottom, and/or is connected to storage tank inner bottom part by inner suction pipe, ensure that the liquid entering pump sump in storage tank is LNG, and the BOG that storage tank upper strata can not be caused to exist sucks.
Built-in without bottom valve LNG pump well construction of the present utility model, described tank bottom is provided with hydrops hole, and the bottom of described pump sump stretches in hydrops hole, and described pipeline is connected to hydrops hole in storage tank outside.
Owing to have employed said structure, due to gravity, be LNG liquid in the hydrops hole of tank bottom, pump sump stretches in hydrops hole and ensures that temperature remains constant, and fluctuating range is minimum; Pipeline is connected to hydrops hole, stretches in hydrops hole simultaneously, reduces the pipe range needed for connecting tube, save material bottom pump sump.
Built-in without bottom valve LNG pump well construction of the present utility model, described pipeline has one or two, and wherein every root pipeline is provided with one or two stop valve.
Owing to have employed said structure, when one of them stop valve breaks down time, close another stop valve, namely can the stop valve broken down be keeped in repair.Avoid after stop valve breaks down, being communicated with thus cannot keeping in repair stop valve between pump sump with hydrops pond cannot be cut off, the situation causing a large amount of LNG to waste occurs, also facilitate maintenance man to keep in repair, maintaining can also be carried out at any time to stop valve, reduce the possibility that stop valve breaks down.
Built-in without bottom valve LNG pump well construction of the present utility model, pipeline described in each root is at least provided with a pneumatic stopping valve.
Owing to have employed said structure, pneumatic stopping valve working stroke is little, and opening and closing time is short, reduces the waste to LNG in opening-closing process; Not only increase use energy efficiency, increase device security, decrease maintenance expenses and maintain frequently, additionally providing the working environment of clean and safe; There is no fluid loss in the course of the work, reduce energy loss, improve device security, and long service life, reduce maintenance frequency, reduce operating cost.
Built-in without bottom valve LNG pump well of the present utility model, described pipeline is made up of stainless steel.
Owing to have employed said structure, extend the working life of pipeline, also ensure that from hydrops pond conveying LNG stablizing to pump sump.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are:
1, structure is simple, implements simple installation, can not only keep in repair immersed pump at any time, also can keep in repair with the valve be communicated with between pump sump control storage tank at any time.
2, significantly reduce the waste to LNG in maintenance process, reduce energy loss, saved cost.
3, at any time maintaining is carried out to stop valve, reduce the possibility that stop valve breaks down, increase device security, decrease maintenance expenses and maintain frequently, additionally providing the working environment of clean and safe.
4, stop valve is arranged on outside pump sump and storage tank, and controlling component can be made to separate with reservoir part, and structure moves towards short and sweet, convenient management.
Accompanying drawing explanation
Fig. 1 is the sectional view of built-in without bottom valve LNG pump well construction;
Fig. 2 is the schematic diagram of built-in without bottom valve LNG pump well construction.
Mark in figure: 1 is pump sump, and 2 is storage tank, 21 is hydrops hole, and 3 is stop valve, and 4 is pipeline, and 5 is admission chamber.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the object of model utility, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment 1
As depicted in figs. 1 and 2, built-in without bottom valve LNG pump well construction, comprises the pump sump 1 be located in storage tank 2, immersed pump is provided with in pump sump 1, the diameter of the minor diameter fit immersed pump of pump sump 1, immersed pump is placed after pump sump, forms admission chamber 5 between the entrance point of immersed pump and pump sump 1 bottom, pump sump 1 is provided with some pipelines 4 extending out to storage tank 2 outside, and the number of pipeline 4 can be 1, also can be 2, even more, and one end of pipeline 4 is communicated with admission chamber 5, and the other end of pipeline 4 is from storage tank 2 ft connection in storage tank 2, the part that pipeline 4 is positioned at storage tank 2 outside is provided with some stop valves 3, on every root pipeline 4, the number of stop valve 3 can be 1, also can be 2, even more, all stop valves 3 are all arranged on pipeline 4 and are positioned in the part of storage tank 2 outside, stop valve 3 is communicated with between pump sump 1 with storage tank 2 for controlling, stop valve 3 is moved on to storage tank 1 outside, when needs keep in repair immersed pump, close stop valve 3 from outside and namely can disconnect being communicated with between pump sump 1 with storage tank 2, LNG liquid can not continue to enter pump sump 1 from storage tank 2, now immersed pump is hung out well to keep in repair immersed pump outward.Many pipelines, namely multiple stop valve can carry out multi control to the connected state between pump sump 1 and storage tank 2, when needs keep in repair one of them stop valve time, the stop valve of closing other still can disconnect being communicated with between pump sump 1 with storage tank 2, not only conveniently to the maintenance of stop valve, can also ensure that the connected state between pump sump 1 and storage tank 2 is in a controllable state all the time.When the number of pipeline 4 is 1, when the stop valve number on pipeline 4 is 2, for more reasonably arranging; When the number of pipeline 4 is 2, when on every root pipeline 4, the number of stop valve is 1, for more reasonably arranging, it is controlled that setting like this both can ensure together with state between pump sump 1 and storage tank 2, also saves material, cost-saving.
Embodiment 2
As depicted in figs. 1 and 2, built-in without bottom valve LNG pump well construction, pump sump 1 bottom is sealing configuration, pipeline 4 is communicated with admission chamber 5 on the bottom surface and/or sidewall of pump sump 1, pipeline 4 can enter from the bottom of pump sump 1 and connect admission chamber 5, also can connect admission chamber 5 from the sidewall on the left side of pump sump 2 or right side, pipeline 4 one end be positioned at outside storage tank 2 is connected to storage tank 2 bottom surface; And/or pipeline 4 one end be positioned at outside storage tank 2 is connected to the side of storage tank 2, the inner suction pipe be connected with this pipeline 4 is provided with in storage tank 2, inner suction pipe extends the inner bottom part of storage tank 2, pipeline 4 directly and/or indirectly can be connected to the inner bottom part of storage tank 2, ensure that the liquid entering pump sump in storage tank is LNG, the BOG that storage tank upper strata can not be caused to exist sucks.
Embodiment 3
As depicted in figs. 1 and 2, built-in without bottom valve LNG pump well construction, be provided with hydrops hole 21 bottom storage tank 2, the LNG of storage tank 2 inside constantly flows to hydrops hole 21, and the bottom of pump sump 1 stretches in hydrops hole 21, ensure that temperature remains constant, temperature fluctuation amplitude is minimum, and pipeline 4 is connected to hydrops hole 21 in storage tank 2 outside, stretches in hydrops hole bottom pump sump simultaneously, reduce the pipe range needed for connecting tube, save material.
Embodiment 4
As depicted in figs. 1 and 2, built-in without bottom valve LNG pump well construction, pipeline 4 has one or two, and wherein every root pipeline 4 is provided with one or two stop valve 3, when the number of pipeline 4 is 1, when the stop valve number on pipeline 4 is 2, for more reasonably arranging; When the number of pipeline 4 is 2, when on every root pipeline 4, the number of stop valve is 1, for more reasonably arranging, it is controlled that setting like this both can ensure together with state between pump sump 1 and storage tank 2, also saves material, cost-saving; Each root pipeline 4 is at least provided with a pneumatic stopping valve, pneumatic stopping valve working stroke is little, and opening and closing time is short, reduces the waste to LNG in opening-closing process; Not only increase use energy efficiency, increase device security, decrease maintenance expenses and maintain frequently, additionally providing the working environment of clean and safe; There is no fluid loss in the course of the work, reduce energy loss, improve device security, and long service life, reduce maintenance frequency, reduce operating cost; Pipeline 4 is made up of stainless steel, extends the working life of pipeline.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. built-in without bottom valve LNG pump well construction, is characterized in that: comprise the pump sump (1) be located in storage tank (2), described pump sump is provided with immersed pump in (1), forms admission chamber (5) between the entrance point of described immersed pump and pump sump (1) bottom; Described pump sump (1) is provided with some pipelines (4) extending out to storage tank (2) outside, and one end of described pipeline (4) is communicated with admission chamber (5), and the other end of described pipeline (4) is from storage tank (2) ft connection in storage tank (2); The part that described pipeline (4) is positioned at storage tank (2) outside is provided with some stop valves (3).
2. built-in without bottom valve LNG pump well construction as claimed in claim 1, is characterized in that: described pump sump (1) bottom is sealing configuration, and described pipeline (4) is communicated with admission chamber (5) on the bottom surface and/or sidewall of pump sump (1).
3. built-in without bottom valve LNG pump well construction as claimed in claim 1 or 2, is characterized in that: described pipeline (4) is positioned at storage tank (2) one end outward and is connected to storage tank (2) bottom surface; And/or described pipeline (4) is positioned at the side that storage tank (2) one end is outward connected to storage tank (2), be provided with the inner suction pipe be connected with this pipeline (3) in described storage tank (2), described inner suction pipe extends the inner bottom part of storage tank (2).
4. built-in without bottom valve LNG pump well construction as claimed in claim 1 or 2, it is characterized in that: described storage tank (2) bottom is provided with hydrops hole (21), the bottom of described pump sump (1) stretches in hydrops hole (21), and described pipeline (4) is connected to hydrops hole (21) in storage tank (2) outside.
5. built-in without bottom valve LNG pump well construction as claimed in claim 1 or 2, is characterized in that: described in state pipeline (4) and have one or two, wherein every root pipeline (4) is provided with one or two stop valve (3).
6. built-in without bottom valve LNG pump well construction as claimed in claim 5, is characterized in that: pipeline (4) described in each root is at least provided with a pneumatic stopping valve.
7. the built-in without bottom valve LNG pump well as described in claim 1 or 2 or 6, is characterized in that: described pipeline (4) is made up of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520648806.1U CN204879436U (en) | 2015-08-26 | 2015-08-26 | Built -in no bottom valve LNG pump well structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520648806.1U CN204879436U (en) | 2015-08-26 | 2015-08-26 | Built -in no bottom valve LNG pump well structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204879436U true CN204879436U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520648806.1U Withdrawn - After Issue CN204879436U (en) | 2015-08-26 | 2015-08-26 | Built -in no bottom valve LNG pump well structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204879436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042328A (en) * | 2015-08-26 | 2015-11-11 | 成都华气厚普机电设备股份有限公司 | Built-in bottom-valve-free LNG pump well structure |
-
2015
- 2015-08-26 CN CN201520648806.1U patent/CN204879436U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042328A (en) * | 2015-08-26 | 2015-11-11 | 成都华气厚普机电设备股份有限公司 | Built-in bottom-valve-free LNG pump well structure |
| CN105042328B (en) * | 2015-08-26 | 2017-11-10 | 成都华气厚普机电设备股份有限公司 | Built-in without bottom valve LNG pump well construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151216 Effective date of abandoning: 20171110 |
|
| AV01 | Patent right actively abandoned |