CN201425158Y - Vehicle liquefied natural gas self-pressurizing system - Google Patents
Vehicle liquefied natural gas self-pressurizing system Download PDFInfo
- Publication number
- CN201425158Y CN201425158Y CN2009200850091U CN200920085009U CN201425158Y CN 201425158 Y CN201425158 Y CN 201425158Y CN 2009200850091 U CN2009200850091 U CN 2009200850091U CN 200920085009 U CN200920085009 U CN 200920085009U CN 201425158 Y CN201425158 Y CN 201425158Y
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- Prior art keywords
- natural gas
- liquefied natural
- pressure
- vehicle
- lng liquefied
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a vehicle liquefied natural gas self-pressurizing system comprising a vehicle liquefied natural gas cylinder and a vehicle liquefied natural gas temperature rise and pressure regulation device containing a manual disconnecting valve, a pressure maintaining valve, a heat exchanger and a pipe, wherein an output pipe of liquefied natural gas whose pressure is regulated isconnected with a carburetor; an output pipe of the carburetor is connected with a pressure maintaining tank or an explosion-proof electromagnetic valve, and the pressure maintaining valve or an enginegas supply system of the pressure maintaining valve, and finally is connected to a liquefied natural gas engine to burn. After the vehicle liquefied natural gas temperature rise and pressure regulation device is additionally arranged in a vehicle liquefied natural gas supply system, liquefied natural gas under low temperature and low pressure (pressure is equal to or more than 0.1 MPa) can reachthe intake pressure requirement of an engine; because the vehicle liquefied natural gas temperature rise and pressure regulation device is loaded outside the vehicle liquefied natural gas cylinder, cylinders with the same volume can load liquefied natural gas with lower density, and the mileages of continuation of a vehicle are ensured; and meanwhile, a gas station of liquefied natural gas only needs to be designed and built according to ordinary pressure, so the station building cost and the discharge waste of the liquefied natural gas are reduced.
Description
Technical field
The utility model belongs to the air supply system parts of liquid petroleum gas vehicle, is specifically related to a kind of vehicle-mounted LNG Liquefied natural gas from pressurization system.
Background technique
Along with China's rapid economy development, China's environmental pollution problem is serious day by day.Wherein the primary pollution source of urban environment is emission of automobile wastes, and brainstrust research thinks that rock gas is one of ideal fuel of gasoline replacing.And rock gas is lower by 20% than the carbon dioxide that gasoline combustion discharged, and toxic discharge is also much lower, is a kind of vehicle fuel of cleaning.
Gas-fueled vehicles divide liquefaction rock gas (LNG) automobile and compressed natural gas (CNG) automobile.Concerning the LNG automobile, make and start the function proper functioning, as follows in conjunction with flow chart description shown in Figure 1: (pressure generally 〉=0.1MPa) is conducted to the gas filling of liquefied natural gas station to natural coal liquefaction plant the LNG Liquefied natural gas of low temperature, the gas filling of liquefied natural gas station is (the vehicle-mounted liquefied natural gas bottle of packing into of the general 0.35MPa of pressure～1.6MPa) of the LNG Liquefied natural gas after heating up, LNG Liquefied natural gas in the vehicle-mounted LNG Liquefied natural gas gas cylinder is converted into gaseous natural gas after by vaporizer, the output pipeline of vaporizer is connected to surge tank, is connected to the natural gas engine burning; Or vaporizer receives pressure maintaining valve by output pipeline, and the output pipeline of pressure maintaining valve finally is connected in the motor and burns; Or vaporizer receives explosion-proof solenoid valve, pressure maintaining valve by output pipeline, and the output pipeline of valve finally is connected in the motor and burns.The pressure of gaseous natural gas derives from the saturation pressure of the LNG Liquefied natural gas at gas filling of liquefied natural gas station after all, and the LNG Liquefied natural gas of injection is generally at-162 ℃ at first, and saturation pressure is about 0.1MPa.Want the suction pressure (being generally 0.35MPa-1.6MPa) that its saturation pressure reaches motor, must be with the temperature rising of LNG Liquefied natural gas on the gas filling of liquefied natural gas station, temperature raises back pressure will corresponding increasing.And on the gas filling of liquefied natural gas station, LNG Liquefied natural gas intensification pressurization will be had following adverse consequences:
1, LNG Liquefied natural gas pressure is higher in the gas station, when building the gas filling of liquefied natural gas station, the wall thickness of liquefied natural gas (LNG) tank must be increased, thereby has directly increased the manufacture cost of building a station.
When 2, building the gas filling of liquefied natural gas station, a safe release pressure (being generally 1.6MPa) is set in the capital, when the pressure of LNG Liquefied natural gas in the gas station surpasses release pressure, gas station will discharge a part of LNG Liquefied natural gas automatically, the pressure of LNG Liquefied natural gas remains at below the safe release pressure in the gas station thereby make, and avoids the overpressure of LNG Liquefied natural gas in the gas station and accident such as blast.If (be generally 0.35MPa～1.6MPa) and on the gas filling of liquefied natural gas station, the pressure of LNG Liquefied natural gas is set in the suction pressure scope of motor, therefore the safe release pressure that the pressure the time is set in gas station is very near, LNG Liquefied natural gas is wanted emptying soon, cause the unnecessary waste of LNG Liquefied natural gas, increased the maintenance and the user cost at gas filling of liquefied natural gas station.
3, if the saturation pressure in the gas filling of liquefied natural gas station is too high, will the density of LNG Liquefied natural gas be reduced, thereby cause under the same volume, the loading mass of vehicle-mounted LNG Liquefied natural gas gas cylinder reduces, thereby has reduced the mileages of continuation of automobile.
Summary of the invention
The purpose of this utility model is to provide a kind of new vehicle-mounted LNG Liquefied natural gas from pressurization system, it can be with LNG Liquefied natural gas pressure build up on automobile, make LNG Liquefied natural gas under the normal pressure (pressure 0.1MPa) directly canned in the vehicle-mounted LNG Liquefied natural gas gas cylinder after, directly give the motor air feed, and need be with the LNG Liquefied natural gas pressure build up under the normal pressure in the gas filling of liquefied natural gas station.
For this reason, the technical solution of the utility model is: vehicle-mounted LNG Liquefied natural gas is from pressurization system, comprise the vehicle-mounted LNG Liquefied natural gas gas cylinder that is used under the less pressure of splendid attire, it is characterized in that: the hand stop valve, pressure maintaining valve, the heat exchanger that are useful on the heat exchange circulation usefulness of rising LNG Liquefied natural gas temperature at vehicle-mounted LNG Liquefied natural gas gas cylinder peripheral hardware; The LNG Liquefied natural gas gas cylinder is provided with an outlet, and outlet, hand stop valve, pressure maintaining valve, heat exchanger connect successively by pipeline, and heat exchanger is connected to vehicle-mounted LNG Liquefied natural gas gas cylinder inner chamber by pipeline again.
Beneficial effect: outside vehicle-mounted LNG Liquefied natural gas gas cylinder, increased a heat exchanger, this heat exchanger can with less pressure in the gas cylinder (LNG Liquefied natural gas of pressure 〉=0.1MPa) makes it reach the pressurization purpose that heats up by the exchange heat with external environment condition, make its suction pressure requirement that finally reaches motor, guarantee to start function normal combustion and work.This vehicle-mounted LNG Liquefied natural gas can make the LNG Liquefied natural gas under the normal pressure directly give the motor air feed from the supercharge system.Like this, LNG Liquefied natural gas gas cylinder under the same volume can load more LNG Liquefied natural gas, improved the mileages of continuation of LNGV (liquefied natural gas vehicle), the gas filling of liquefied natural gas station only need get final product by the normal pressure design and construction simultaneously, has reduced the discharging waste of build a station cost and LNG Liquefied natural gas.
Description of drawings
Fig. 1 is the air feed flow chart of original vehicle-mounted LNG Liquefied natural gas air supply system.
Fig. 2 is the structure diagram of the vehicle-mounted LNG Liquefied natural gas of the utility model from the supercharge system.
Fig. 3 is the skeleton diagram of the vehicle-mounted LNG Liquefied natural gas engine air supply systems behind installation the utility model.
Fig. 4 installs the air feed flow chart of vehicle-mounted LNG Liquefied natural gas of the present utility model from pressurization system.
Embodiment
As shown in Figure 2, it is as follows to further describe the utility model: be provided with an outlet on vehicle-mounted LNG Liquefied natural gas gas cylinder 1, outlet is connected with hand stop valve 3 by pipeline 2, hand stop valve 3 is connected with pressure maintaining valve 5 by pipeline 4, pressure maintaining valve 5 is connected with heat exchanger 7 by pipeline 6, and heat exchanger 7 is connected to vehicle-mounted LNG Liquefied natural gas gas cylinder inner chamber by pipeline 8 again.
As shown in Figure 3, (output pipeline 2 of pressure 〉=0.1MPa) is connected to hand stop valve 3 to the LNG Liquefied natural gas in the vehicle-mounted LNG Liquefied natural gas gas cylinder 1 under the low pressure, and the output pipeline 4 of hand stop valve 3 is connected to the import of pressure maintaining valve 5.The output pipeline 6 of pressure maintaining valve is connected to the import of heat exchanger 7, the LNG Liquefied natural gas that enters into 7 li of heat exchangers absorbs the heat in the air, pressure increases thereby the temperature that makes LNG Liquefied natural gas raises, LNG Liquefied natural gas behind the increase pressure is got back in the vehicle-mounted LNG Liquefied natural gas gas cylinder 1 by the output pipeline 8 of heat exchanger 7 and the LNG Liquefied natural gas of the lower temperature in the vehicle-mounted LNG Liquefied natural gas gas cylinder 1 is carried out heat exchange, finishes a heat exchange circulation.The LNG Liquefied natural gas of heat exchange is connected to hand stop valve by output pipeline 2 again, carry out next heat exchange circulation, (pressure of setting is the pressure that engine combustion needs finally to make the pressure of the LNG Liquefied natural gas in the vehicle-mounted LNG Liquefied natural gas gas cylinder reach the setting pressure of pressure maintaining valve 5, be generally 0.35MPa～1.6MPa), the LNG Liquefied natural gas of this moment can directly offer engine combustion.Finishing of whole vehicle-mounted LNG Liquefied natural gas from pressurization.
After LNG Liquefied natural gas pressure in the vehicle-mounted LNG Liquefied natural gas gas cylinder raises, be connected to vaporizer 10 by another one output pipeline 9, vaporizer 10 can connect explosion-proof solenoid valve 12, pressure maintaining valve 14 by output pipeline 11, perhaps connect the surge tank 13 (or gas holder) that is used for stored-gas, perhaps connect pressure maintaining valve 14, final rock gas enters into motor 16 internal combustion by pipeline 15.
As shown in Figure 4, it is as follows from the air feed flow process of pressurization system to describe installation vehicle-mounted LNG Liquefied natural gas of the present utility model: (pressure generally 〉=0.1MPa) is conducted to the gas filling of liquefied natural gas station to natural coal liquefaction plant the LNG Liquefied natural gas of low temperature, the gas filling of liquefied natural gas station the liquified natural gas of low temperature (pressure is general 〉=the vehicle-mounted liquefied natural gas bottle of 0.1MPa) packing into, the LNG Liquefied natural gas of vehicle-mounted liquefied natural gas bottle is passed through heat exchanger, pressure maintaining valve, hand stop valve constitutes, and from the pressurization system device liquified natural gas in the LNG Liquefied natural gas gas cylinder to be pressurized to pressure be 0.35MPa～1.6MPa, by being converted into gaseous natural gas behind the vaporizer, the output pipeline of vaporizer is connected to surge tank, is connected to the natural gas engine burning; Or vaporizer receives pressure maintaining valve by output pipeline, and the output pipeline of pressure maintaining valve finally is connected in the motor and burns; Or vaporizer receives explosion-proof solenoid valve, pressure maintaining valve by output pipeline, and the output pipeline of valve finally is connected in the motor and burns.
Claims (1)
1, vehicle-mounted LNG Liquefied natural gas is from pressurization system, comprise the vehicle-mounted LNG Liquefied natural gas gas cylinder that is used under the less pressure of splendid attire, it is characterized in that: vehicle-mounted LNG Liquefied natural gas gas cylinder peripheral hardware is useful on hand stop valve, pressure maintaining valve, the heat exchanger of the heat exchange circulation usefulness of rising LNG Liquefied natural gas temperature; Also be provided with an outlet on the LNG Liquefied natural gas gas cylinder, outlet, hand stop valve, pressure maintaining valve, heat exchanger connect successively by pipeline, and heat exchanger is connected to LNG Liquefied natural gas gas cylinder inner chamber by pipeline again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200850091U CN201425158Y (en) | 2009-04-11 | 2009-04-11 | Vehicle liquefied natural gas self-pressurizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200850091U CN201425158Y (en) | 2009-04-11 | 2009-04-11 | Vehicle liquefied natural gas self-pressurizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201425158Y true CN201425158Y (en) | 2010-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200850091U Expired - Fee Related CN201425158Y (en) | 2009-04-11 | 2009-04-11 | Vehicle liquefied natural gas self-pressurizing system |
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| CN (1) | CN201425158Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537437A (en) * | 2010-12-22 | 2012-07-04 | 通用汽车环球科技运作有限责任公司 | Pressure maintaining valve and pile-up valve for tank system |
| CN102840057A (en) * | 2012-09-07 | 2012-12-26 | 张家港富瑞特种装备股份有限公司 | Self-boosting device of gas cylinder used for liquefied natural gas vehicle and boosting method thereof |
| CN104913194A (en) * | 2015-07-10 | 2015-09-16 | 核工业理化工程研究院 | Safety device of liquid nitrogen container |
| CN109555967A (en) * | 2018-12-07 | 2019-04-02 | 安徽安凯汽车股份有限公司 | A kind of vehicle-mounted external supercharging device of LNG gas cylinder |
| CN111059461A (en) * | 2019-12-30 | 2020-04-24 | 常州市旭如安金属材料科技有限公司 | A supercharging device for on-vehicle gas cylinder of LNG |
-
2009
- 2009-04-11 CN CN2009200850091U patent/CN201425158Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537437A (en) * | 2010-12-22 | 2012-07-04 | 通用汽车环球科技运作有限责任公司 | Pressure maintaining valve and pile-up valve for tank system |
| CN102537437B (en) * | 2010-12-22 | 2014-12-10 | 通用汽车环球科技运作有限责任公司 | Pressure maintaining valve and pile-up valve for tank system |
| CN102840057A (en) * | 2012-09-07 | 2012-12-26 | 张家港富瑞特种装备股份有限公司 | Self-boosting device of gas cylinder used for liquefied natural gas vehicle and boosting method thereof |
| CN104913194A (en) * | 2015-07-10 | 2015-09-16 | 核工业理化工程研究院 | Safety device of liquid nitrogen container |
| CN109555967A (en) * | 2018-12-07 | 2019-04-02 | 安徽安凯汽车股份有限公司 | A kind of vehicle-mounted external supercharging device of LNG gas cylinder |
| CN111059461A (en) * | 2019-12-30 | 2020-04-24 | 常州市旭如安金属材料科技有限公司 | A supercharging device for on-vehicle gas cylinder of LNG |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100317 Termination date: 20110411 |