CN102182912A - Liquid discharging device of liquefied natural gas filling vehicle - Google Patents
Liquid discharging device of liquefied natural gas filling vehicle Download PDFInfo
- Publication number
- CN102182912A CN102182912A CN 201110035963 CN201110035963A CN102182912A CN 102182912 A CN102182912 A CN 102182912A CN 201110035963 CN201110035963 CN 201110035963 CN 201110035963 A CN201110035963 A CN 201110035963A CN 102182912 A CN102182912 A CN 102182912A
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- pump
- liquid discharging
- valve
- liquid
- liquefied natural
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Abstract
The invention discloses a liquid discharging device of a liquefied natural gas filling vehicle, comprising a liquid discharging pipe, a liquid discharging valve, a liquid discharging pump, a gas returning pipe and a gas returning valve, wherein the liquid discharging pump is installed on the liquefied natural gas filling vehicle; the liquid discharging pipe is arranged between a storage tank of the filling vehicle and a liquid inlet of the liquid discharging pump; the gas returning pipe is arranged between a gas returning opening of the liquid discharging pump and the storage tank of the filling vehicle; the liquid discharging valve is arranged on the liquid discharging pipe; the gas returning valve is arranged on the gas returning pipe; the liquid discharging pipe is communicated the bottom of the storage tank; the liquid discharging pump is an immersed pump; a liquid inlet of the immersed pump is lower than the storage tank; and the liquid discharging pipe and the gas returning pipe are vacuum pipes, and the liquid discharging valve and the gas returning valve are both vacuum valves. As the liquid discharging pipe is connected with the bottom of the storage tank, the pump can be pre-cooled, so that the efficiency of the liquid discharging pump can be reduced. As the liquid discharging pipe and the gas returning pipe are the vacuum pipes, and the liquid discharging valve and the gas returning valve are the vacuum valves, the heat insulation effect of a pipeline is improved, and the heat transfer of liquid in flowing is small, thus being beneficial to keeping the low-temperature state of the liquid.
Description
Technical field
The present invention relates to LNG Liquefied natural gas filling car, refer more particularly to LNG Liquefied natural gas filling car liquid discharge device.
Background technique
For the LNG Liquefied natural gas Pump for giving-out that is installed in the storage tank outside, before formal transportation of liquefied natural gas, to cool off earlier for whole Pump for giving-out and pipe-line system.Precooling process is extremely important, otherwise can cause liquefied natural gas gasifying because system temperature is too high, produces gas-liquid two-phase flow, makes the Pump for giving-out can't normal operation.
Common LNG Liquefied natural gas filling car liquid discharge device, in the perforate of the side of liquefied natural gas vehicle storage tank, adopt the drain pipe of syphon structure, liquid only just can enter Pump for giving-out Pump for giving-out is carried out precooling under the situation of pressure reduction like this, and the precooling of whole pipeline and Pump for giving-out all needs to consume a part of liquid, caused certain waste.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and can improve the heat insulation effect of LNG Liquefied natural gas filling car fluid pipeline and the LNG Liquefied natural gas filling car liquid discharge device of Pump for giving-out efficient.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: LNG Liquefied natural gas filling car liquid discharge device, comprise: drain pipe, the fluid valve, Pump for giving-out, muffler and return air valve, Pump for giving-out is installed on the LNG Liquefied natural gas filling car, drain pipe is arranged between the storage tank and Pump for giving-out liquid entering hole of filling car, muffler is arranged between the storage tank of Pump for giving-out return-air mouth and LNG Liquefied natural gas filling car, the fluid valve is installed on the drain pipe, return air valve is arranged on the muffler, described drain pipe is connected with tank bottom, described Pump for giving-out is an immersed pump, and the liquid entering hole of immersed pump is lower than storage tank.
Described drain pipe and muffler all are vacuum tube, and described fluid valve and return air valve all are vacuum valve.
Advantage of the present invention is: because drain pipe links to each other with tank bottom, and the immersed pump liquid entering hole is lower than storage tank, help pump pond feed liquor, make has cryogenic liquide to soak always in the Pump for giving-out, can play the effect of precooling to Pump for giving-out, can directly start Pump for giving-out when using like this, reduce the loss of liquid and increased the efficient of carrying.
Because drain pipe and muffler adopt vacuum tube, fluid valve and return air valve adopt vacuum valve, have improved the insulation effect of pipeline, and liquid heat transfer in flow process is little, help liquid and keep low-temperature condition.
Description of drawings
Fig. 1 looks schematic representation for master of the present invention.
Among the figure: 1. storage tank, 2. drain pipe, 3. fluid valve, 4. Pump for giving-out, 5. muffler, 6. return air valve.
Embodiment
Describe particular content of the present invention in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, LNG Liquefied natural gas filling car liquid discharge device, comprise: drain pipe 2, fluid valve 3, Pump for giving-out 4, muffler 5 and return air valve 6, Pump for giving-out 4 is installed on the LNG Liquefied natural gas filling car, drain pipe 2 is arranged between the storage tank 1 and Pump for giving-out 4 liquid entering holes of filling car, muffler 5 is arranged between the storage tank 1 of Pump for giving-out 4 return-air mouths and LNG Liquefied natural gas filling car, fluid valve 3 is installed on the drain pipe 2, return air valve 6 is arranged on the muffler 5, described drain pipe 2 is connected with storage tank 1 bottom, described Pump for giving-out 4 is an immersed pump, and the liquid entering hole of immersed pump is lower than storage tank 1.
Described drain pipe 2 and muffler 5 all are vacuum tube, and described fluid valve 3 and return air valve 4 all are vacuum valve.
Because drain pipe 2 links to each other with storage tank 1 bottom, and the immersed pump liquid entering hole is lower than storage tank 1, during use, fluid valve 3 is in normally open, liquid can flow under the influence of gravity in the pump pond of immersed pump in the storage tank 1, and make has cryogenic liquide to soak always in the pump, can play the effect of precooling to Pump for giving-out 4, can directly start Pump for giving-out 4 when using like this, reduce the loss of liquid and increased the efficient of carrying.
Because drain pipe 2 and muffler 5 adopt vacuum tube, fluid valve 3 and return air valve 6 adopt vacuum valve, have improved the insulation effect of pipeline, and liquid heat transfer in flow process is little, helps liquid and keeps low-temperature condition.
Claims (2)
1. LNG Liquefied natural gas filling car liquid discharge device, comprise: drain pipe, fluid valve, Pump for giving-out, muffler and return air valve, Pump for giving-out is installed on the LNG Liquefied natural gas filling car, drain pipe is arranged between the storage tank and Pump for giving-out liquid entering hole of filling car, muffler is arranged between the storage tank of Pump for giving-out return-air mouth and LNG Liquefied natural gas filling car, the fluid valve is installed on the drain pipe, return air valve is arranged on the muffler, it is characterized in that: described drain pipe is connected with tank bottom, described Pump for giving-out is an immersed pump, and the liquid entering hole of immersed pump is lower than storage tank.
2. LNG Liquefied natural gas filling car liquid discharge device as claimed in claim 1, it is characterized in that: described drain pipe and muffler all are vacuum tube, described fluid valve and return air valve all are vacuum valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110035963 CN102182912A (en) | 2011-02-11 | 2011-02-11 | Liquid discharging device of liquefied natural gas filling vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110035963 CN102182912A (en) | 2011-02-11 | 2011-02-11 | Liquid discharging device of liquefied natural gas filling vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102182912A true CN102182912A (en) | 2011-09-14 |
Family
ID=44569175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110035963 Pending CN102182912A (en) | 2011-02-11 | 2011-02-11 | Liquid discharging device of liquefied natural gas filling vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102182912A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015058481A1 (en) * | 2013-10-23 | 2015-04-30 | 石家庄安瑞科气体机械有限公司 | Tank/pump integrated structure for lng filling station |
| CN105318180A (en) * | 2014-06-27 | 2016-02-10 | 安瑞科(廊坊)能源装备集成有限公司 | LNG liquid adding system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6434948B1 (en) * | 1998-01-30 | 2002-08-20 | Den Norske Stats Oljeselskap A.S. And Navion As | LNG load transfer system |
| CN1789781A (en) * | 2005-12-29 | 2006-06-21 | 上海交通大学 | Overfilling preventing device for fuel gas cylinder of automobile using liquefied natural gas as fuel |
| CN101131158A (en) * | 2007-03-28 | 2008-02-27 | 林寿贵 | Natural gas liquid charging-up pump and natural gas liquid charging-up station |
| CN201461309U (en) * | 2009-07-28 | 2010-05-12 | 北京长征天民高科技有限公司 | Vacuum insulation device and liquefied natural gas vehicle gassing system |
| CN201992334U (en) * | 2011-02-11 | 2011-09-28 | 张家港富瑞特种装备股份有限公司 | Liquid outlet device for liquefied natural gas servicer |
-
2011
- 2011-02-11 CN CN 201110035963 patent/CN102182912A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6434948B1 (en) * | 1998-01-30 | 2002-08-20 | Den Norske Stats Oljeselskap A.S. And Navion As | LNG load transfer system |
| CN1789781A (en) * | 2005-12-29 | 2006-06-21 | 上海交通大学 | Overfilling preventing device for fuel gas cylinder of automobile using liquefied natural gas as fuel |
| CN101131158A (en) * | 2007-03-28 | 2008-02-27 | 林寿贵 | Natural gas liquid charging-up pump and natural gas liquid charging-up station |
| CN201461309U (en) * | 2009-07-28 | 2010-05-12 | 北京长征天民高科技有限公司 | Vacuum insulation device and liquefied natural gas vehicle gassing system |
| CN201992334U (en) * | 2011-02-11 | 2011-09-28 | 张家港富瑞特种装备股份有限公司 | Liquid outlet device for liquefied natural gas servicer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015058481A1 (en) * | 2013-10-23 | 2015-04-30 | 石家庄安瑞科气体机械有限公司 | Tank/pump integrated structure for lng filling station |
| CN105318180A (en) * | 2014-06-27 | 2016-02-10 | 安瑞科(廊坊)能源装备集成有限公司 | LNG liquid adding system |
| CN105318180B (en) * | 2014-06-27 | 2021-03-19 | 安瑞科(廊坊)能源装备集成有限公司 | LNG liquid feeding system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110914 |