CN204372529U - A kind of LNG Liquefied natural gas immersed pump sled liquid-adding device - Google Patents
A kind of LNG Liquefied natural gas immersed pump sled liquid-adding device Download PDFInfo
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- CN204372529U CN204372529U CN201420788674.8U CN201420788674U CN204372529U CN 204372529 U CN204372529 U CN 204372529U CN 201420788674 U CN201420788674 U CN 201420788674U CN 204372529 U CN204372529 U CN 204372529U
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- natural gas
- liquefied natural
- liquid
- pump
- lng liquefied
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- Expired - Fee Related
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Abstract
A kind of LNG Liquefied natural gas immersed pump sled liquid-adding device, it is a kind of LNG Liquefied natural gas liquid feeding technology, it solve the difficult problem in current technology, it be prize base by LNG cold immersed pump and cryogenic pump sump, pressurized machine of unloading, pipe valve line, pump, horizontal tank, release hot-air heater, liquid filler, LNG Liquefied natural gas tank car, PLC control system be formed by connecting, horizontal tank is fixed on pump sled base, and by valve pipeline respectively with pressurized machine, discharge hot-air heater and be connected; Release hot-air heater is connected with LNG cold immersed pump and cryogenic pump sump, liquid filler respectively by valve pipeline; Pipeline is installed with PLC control system; LNG Liquefied natural gas tank car is connected with outlet line.
Description
Technical field: the utility model relates to a kind of LNG Liquefied natural gas liquid feeding technology, especially a kind of LNG Liquefied natural gas immersed pump sled liquid-adding device.
Background technique: LNG Liquefied natural gas has been widely used on automobile, heavily card, but in liquefied natural gas filling automobile process, a large amount of flashed vapour can be produced, there are two automobiles liquid feeding two liquid filler bias current problems simultaneously simultaneously, the i.e. automobile of a previous liquid feeding, when annotating the automobile of liquid feeding subsequently, large quantity of fluid can enter in the automobile of rear liquid feeding of low pressure, and the automobile previously carrying out liquid feeding does not add liquid, cause liquid feeding time lengthening.When unloading as needs liquid feeding, previous liquid-adding device needs people for carrying out liquid adding functions conversion, trivial operations, and labor strength is high.Research and develop a kind of LNG Liquefied natural gas list pump two-shipper liquid-adding device significant.
Summary of the invention: it is short that the purpose of this utility model is to provide a kind of technology path, a kind of LNG Liquefied natural gas immersed pump sled liquid-adding device that investment cost is low, it solve the difficult problem in current technology, the purpose of this utility model realizes like this, it is by LNG cold immersed pump and cryogenic pump sump, to unload pressurized machine, pipe valve line, pump sled base, horizontal tank, release hot-air heater, liquid filler, LNG Liquefied natural gas tank car, PLC control system is formed by connecting, horizontal tank is fixed on pump sled base, and by valve pipeline respectively with pressurized machine, release hot-air heater connects.
Release hot-air heater is connected with LNG cold immersed pump and cryogenic pump sump, liquid filler respectively by valve pipeline.
Pipeline is installed with PLC control system; LNG Liquefied natural gas tank car is connected with outlet line.
Method of work of the present utility model: 1, during liquid feeding, the liquid of horizontal tank flows to low temperature immersed pump, and then flows to liquid filler from low temperature immersed pump; The interface that the relevant mouth of pipe of liquid filler and horizontal tank liquid feeding are prized is docked one by one; Control the pressure (0.6Mpa) in horizontal tank, LNG Liquefied natural gas enters into low temperature immersed pump, the mode of operation of two liquid fillers by PLC internal logic control pump rotating speed, the pump (lifting rate of rotating speed different control pump when realizing unit, two-shipper liquid feeding.
2, when supercharging is unloaded, pressurized machine of unloading is adopted to unload; The relevant interface that the liquid phase mouth of tank car, boost port, gas phase mouth are prized with horizontal liquid feeding is docked one by one, controls tank car pressure and horizontal tank pressure, utilize pressure reduction to unload the LNG Liquefied natural gas in tank car in horizontal tank.
3, when pump is unloaded, the gas, liquid mouth that tank car liquid phase, gas phase mouth are prized with liquid feeding is respectively connected; Open the associated valve on tank car, liquid feeding sled respectively; Control cabinet is chosen pump and is unloaded functionally, is undertaken opening, stopping unloading pump by execute-in-place post; Carry out liquid feeding when pump is unloaded if any vehicle, control system proceeds to liquid feeding pattern automatically, and liquid feeding completes and goes back to pump and to unload pattern.
4, during pressure release, pressure relief system is made up of automatic control system and safety valve pipe-line system, and when pressure of storage tank height is high in limited time to automatic control, robot control system(RCS) is opened diffusion valve and diffused, to reduce pressure of storage tank, under pressure of storage tank drops to pressure of storage tank, diffusion valve is closed automatically in limited time.The safety valve jumping up when pressure of storage tank continues to raise, carries out pressure release to storage tank, and the flashed vapour of discharge is discharged into diffusion system by release hot-air heater, guarantees the safe operation of whole skid mounted equipment and pipeline.
5, when LNG cold liquid is adjusted saturated, control cabinet mode of operation to be recruited saturation operation mode, start immersed pump from execute-in-place post, make liquefied natural gas liquid have little time gasification quickly through pressurized machine LNG Liquefied natural gas of unloading, return feed liquor under storage tank; Tune carries out to LNG cold liquid saturated.
6, during immersed pump overhaul, pouring in down a chimney of immersed pump overhaul or in emergency circumstances horizontal tank, horizontal tank of dismantling unloads the inner elements of check valve of liquid input duct, reinstall one-way valve valve gap, open the bypass valve into immersed pump liquid inlet pipe, liquefied natural gas liquid flows through immersed pump liquid inlet pipe from horizontal tank, then unloads the one-way valve of liquid input duct through horizontal tank, reversely flows into filling tank car.
Meaning of the present utility model is: the utility model technology path is short, invests low, takes full advantage of self cold of tank car LNG Liquefied natural gas, reduces flashed vapour emptying discharge, realizes resource maximum using, reduce energy consumption.Carry out the technology controlling and process such as liquefied natural gas (LNG) tank pressure, immersed pump performance characteristic, Self controlling valve opening and closing opportunity by PLC control system, solve the problem of two liquid filler bias currents.Increase one-way valve in liquid filler vapor return line, immersed pump outlet increases pneumatic valve, decrease the relative evaporation of whole system, engagement positions system reduces 60% relative evaporation, reduces energy consumption.Have liquid adding functions when unloading, when pump is unloaded if any vehicle liquid feeding, control system proceeds to liquid feeding pattern automatically, and liquid feeding completes and goes back to pump and to unload pattern, makes to unload, liquid feeding is independent of each other, realize intelligentized control method.Immersed pump sled liquid-adding device compact structure, floor space is little, and input cost is low, operation, easy to maintenance.The prewired prepackage of factory, field engineering amount is little.Horizontal tank directly connects to immersed pump pump pond pipeline, and apart from short, fluid resistance is little, and loss of refrigeration capacity is little, decreases equipment investment.
Accompanying drawing illustrates: Fig. 1 is the structural representation of a kind of LNG Liquefied natural gas immersed pump sled liquid-adding device, in figure 1, LNG cold immersed pump and cryogenic pump sump 2, pressurized machine 3 of unloading, valve pipeline 4, pump sled base 5, horizontal tank 6, release hot-air heater 7, liquid filler 8, LNG Liquefied natural gas tank car 9, PLC control system.
Fig. 2 is the application process schematic diagram of a kind of LNG Liquefied natural gas immersed pump sled liquid-adding device,
In figure 1, LNG cold immersed pump and cryogenic pump sump 2, pressurized machine 3 of unloading, valve pipeline 5, horizontal tank 6, release hot-air heater 7, liquid filler 8, LNG Liquefied natural gas tank car
Embodiment: embodiment 1: the utility model is formed by connecting by LNG cold immersed pump and cryogenic pump sump 1, pressurized machine 2 of unloading, pipe valve line 3, pump sled base 4, horizontal tank 5, release hot-air heater 6, liquid filler 7, LNG Liquefied natural gas tank car 8, PLC control system 9, horizontal tank 5 is fixed on pump sled base 4, and by valve pipeline 3 respectively with pressurized machine 2, discharge hot-air heater 6 and be connected.
Embodiment 2, release hot-air heater 6 are connected with LNG cold immersed pump and cryogenic pump sump 1, liquid filler 7 respectively by valve pipeline 3.
Embodiment 3, PLC control system 9 is installed on pipeline; LNG Liquefied natural gas tank car 8 is connected with outlet line.
Claims (3)
1. a LNG Liquefied natural gas immersed pump sled liquid-adding device, it be prize base (4) by LNG cold immersed pump and cryogenic pump sump (1), pressurized machine of unloading (2), pipe valve line (3), pump, horizontal tank (5), release hot-air heater (6), liquid filler (7), LNG Liquefied natural gas tank car (8), PLC control system (9) be formed by connecting, it is characterized in that: horizontal tank (5) is fixed on pump sled base (4), and by valve pipeline (3) respectively with pressurized machine (2), discharge hot-air heater (6) and be connected.
2. a kind of LNG Liquefied natural gas immersed pump sled liquid-adding device according to claim 1, is characterized in that: release hot-air heater (6) is connected with LNG cold immersed pump and cryogenic pump sump (1), liquid filler (7) respectively by valve pipeline (3).
3. a kind of LNG Liquefied natural gas immersed pump sled liquid-adding device according to claim 1, is characterized in that: on pipeline, be installed with PLC control system (9); LNG Liquefied natural gas tank car (8) is connected with outlet line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420788674.8U CN204372529U (en) | 2014-12-15 | 2014-12-15 | A kind of LNG Liquefied natural gas immersed pump sled liquid-adding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420788674.8U CN204372529U (en) | 2014-12-15 | 2014-12-15 | A kind of LNG Liquefied natural gas immersed pump sled liquid-adding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204372529U true CN204372529U (en) | 2015-06-03 |
Family
ID=53328750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420788674.8U Expired - Fee Related CN204372529U (en) | 2014-12-15 | 2014-12-15 | A kind of LNG Liquefied natural gas immersed pump sled liquid-adding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204372529U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443975A (en) * | 2015-12-18 | 2016-03-30 | 重庆欣雨压力容器制造有限责任公司 | Liquefied natural gas refueling station and pump skid thereof |
| CN105443976A (en) * | 2015-12-18 | 2016-03-30 | 重庆欣雨压力容器制造有限责任公司 | Liquefied natural gas filling station and double-pump skid thereof |
| CN106195622A (en) * | 2016-08-31 | 2016-12-07 | 河南开元气体装备有限公司 | Novel LNG tank car unloading pump skid is put |
-
2014
- 2014-12-15 CN CN201420788674.8U patent/CN204372529U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443975A (en) * | 2015-12-18 | 2016-03-30 | 重庆欣雨压力容器制造有限责任公司 | Liquefied natural gas refueling station and pump skid thereof |
| CN105443976A (en) * | 2015-12-18 | 2016-03-30 | 重庆欣雨压力容器制造有限责任公司 | Liquefied natural gas filling station and double-pump skid thereof |
| CN106195622A (en) * | 2016-08-31 | 2016-12-07 | 河南开元气体装备有限公司 | Novel LNG tank car unloading pump skid is put |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20171215 |