CN101791946A - Gas supply system of liquefied natural gas vehicle - Google Patents
Gas supply system of liquefied natural gas vehicle Download PDFInfo
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- CN101791946A CN101791946A CN201010018126A CN201010018126A CN101791946A CN 101791946 A CN101791946 A CN 101791946A CN 201010018126 A CN201010018126 A CN 201010018126A CN 201010018126 A CN201010018126 A CN 201010018126A CN 101791946 A CN101791946 A CN 101791946A
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Abstract
The invention discloses a gas supply system of a liquefied natural gas vehicle, of which the pressure of the saturated steam will not change along with the variation in external temperature. The gas supply system comprises a vehicle bottle, wherein the vehicle bottle is provided with a gas inlet and outlet and a gas return port; the gas inlet and outlet of the vehicle bottle is connected with the input port of a balance valve and the output port of a one-way valve; the input port of the one-way valve is connected with a charging connector; the output port of the balance valve is connected with an engine through a main cut-off valve, a flow-limiting valve and a heat exchanger; a main pressure adjusting valve is arranged between the main cut-off valve and the gas return port; the gas supply system also comprises a self-pressurization device; the vehicle bottle is also provided with a pressurization port which is connected with the input port of the self-pressurization device; and the output port of the self-pressurization device is connected with the gas return port. The gas supply device can be applied to various vehicles.
Description
Technical field
The present invention relates to liquefied natural gas vehicle, refer more particularly to the gas supply system of liquefied natural gas vehicle.
Background technology
Owing to do not have stable-pressure device and self-supercharging device in the gas supply system of present liquefied natural gas vehicle, in giving the process of driving engine air feed, the variation of external temperature directly has influence on the pressure of saturated steam, that is: the pressure of saturated steam can change along with the variation of external temperature, when the hypotony of saturated steam, will cause the driving engine can't normal operation.
Summary of the invention
Technical matters to be solved by this invention is: the gas supply system that the liquefied natural gas vehicle that a kind of pressure of saturated steam can not change with the variation of external temperature is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the gas supply system of liquefied natural gas vehicle, comprise: vehicle-mounted bottle, vehicle-mounted bottle is provided with air inlet/outlet and return-air mouth, the air inlet/outlet of vehicle-mounted bottle links to each other with the delivery port of the input port of balance cock and check valve, the input port of check valve links to each other with gas-charging connection, and the delivery port of balance cock links to each other with driving engine with heat exchanger by main stop valve, flow-limiting valve, also is provided with main pressure regulator valve between main stop valve and the return-air mouth; Described gas supply system also includes self-supercharging device, also is provided with boost port on the described vehicle-mounted bottle, and boost port links to each other with the input port of self-supercharging device, and the delivery port of self-supercharging device links to each other with the return-air mouth.
Described return-air mouth also is connected with atmospheric valve and at least one safety valve.
Described self-supercharging device comprises: the supercharging shutoff valve that is serially connected, supercharging pressure regulating valve and blwr.
Described blwr is empty bath formula temperature booster.
The invention has the beneficial effects as follows: because main pressure regulator valve and self-supercharging device have been installed, make and work as because external temperature raises, when making pressure in the vehicle-mounted bottle raise, can unnecessary pressure be unloaded by main pressure regulator valve and bleed off, and, can give the vehicle-mounted bottle supercharging by self-supercharging device when because external temperature reduces the pressure make in the vehicle-mounted bottle when reducing.So just guaranteed the pressure stability of the saturated steam of supply engine, made that driving engine can normal operation.In addition, because this gas feeder is not subjected to the influence of external temperature, gas station can realize that low pressure stores, and has so just improved the gas station safe in operation.
Description of drawings
Fig. 1 is a theory structure scheme drawing of the present invention.
Among the figure: 1, safety valve, 2, safety valve, 3, atmospheric valve, 4, main pressure regulator valve, 5, flow-limiting valve, 6, main stop valve, 7, liquidometer, 8, heat exchanger, 9, ball valve, 10, blwr, 11, the supercharging pressure regulating valve, 12, the supercharging shutoff valve, 13, balance cock, 15, compression indicator, 16, the return-air interface, 17, check valve, 18, charging joint, 19, vehicle-mounted bottle.
The specific embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.
As shown in Figure 1, the gas supply system of liquefied natural gas vehicle of the present invention, comprise: safety valve 1 and 2, atmospheric valve 3, main pressure regulator valve 4, flow-limiting valve 5, main stop valve 6, liquidometer 7, heat exchanger 8, ball valve 9, balance cock 13, compression indicator 15, return-air interface 16, check valve 17, charging joint 18, vehicle-mounted bottle 19 reaches mainly by blwr 10, supercharging pressure regulating valve 11, the self-supercharging device that supercharging shutoff valve 12 constitutes, vehicle-mounted bottle 19 is provided with air inlet/outlet and return-air mouth, the air inlet/outlet of vehicle-mounted bottle 19 links to each other with the input port of balance cock 13 and the delivery port of check valve 17, the input port of check valve 17 links to each other with gas-charging connection 18, the delivery port of balance cock 13 is by main stop valve 6, flow-limiting valve 5 links to each other with driving engine with heat exchanger 8 and ball valve 9, the return-air mouth of vehicle-mounted bottle 19 is connected with return-air interface 16 by return-air duct, also is provided with main pressure regulator valve 4 between main stop valve 6 and the return-air mouth; Also be provided with boost port on the described vehicle-mounted bottle 19, boost port and the input port of self-supercharging device are that the input port of supercharging shutoff valve 12 links to each other, and the delivery port of self-supercharging device is that the outlet of blwr 10 links to each other with the return-air mouth by return-air duct; In the present embodiment, described blwr 10 is empty bath formula temperature booster, and described heat exchanger 8 is the water-bath type temperature booster, and described return-air mouth also is connected with atmospheric valve 3 and a pair of safety valve 1 and 2 by return-air duct; Wherein, safety valve 1 and 2 effect are: prevent that vehicle-mounted bottle 19 superpressures from using, when the pressure in the vehicle-mounted bottle 19 reached setting pressure, safety valve 1 and 2 is the take-off relieving pressure automatically; Vehicle-mounted bottle 10 is in the safe working pressure scope all the time; The effect of atmospheric valve 3 is: needs repairing at vehicle-mounted bottle 19 and changes instrument valve or during in the situation that safety valve breaks down, and can be in the short time with the pressure releasings in the vehicle-mounted bottle 19 to zero (atmospheric pressure state), to guarantee safety of operation; Also be provided with the liquidometer 7 that is used to monitor liquefied natural gas liquid level in the vehicle-mounted bottle on the vehicle-mounted bottle 19, also be provided with the compression indicator 15 that is used to monitor vehicle-mounted pressure of the inside of a bottle on the return-air duct.
Working process of the present invention is: when the pressure in vehicle-mounted bottle 19 satisfies the intake pressure of driving engine, liquefied natural gas in the vehicle-mounted bottle 19 enters in the driving engine by ball valve 9 after successively entering into heat exchanger 8 heating vaporizations by balance cock 13, main stop valve 6 and flow-limiting valve 5; When the pressure in vehicle-mounted bottle 19 is lower than the intake pressure of driving engine, open on the vehicle-mounted bottle 19 from pressure charging system, with the increased pressure in the vehicle-mounted bottle 19 to the intake pressure that satisfies driving engine.
Claims (4)
1. the gas supply system of liquefied natural gas vehicle, comprise: vehicle-mounted bottle, vehicle-mounted bottle is provided with air inlet/outlet and return-air mouth, the air inlet/outlet of vehicle-mounted bottle links to each other with the delivery port of the input port of balance cock and check valve, the input port of check valve links to each other with gas-charging connection, it is characterized in that: the delivery port of balance cock links to each other with driving engine with heat exchanger by main stop valve, flow-limiting valve, also is provided with main pressure regulator valve between main stop valve and the return-air mouth; Described gas supply system also includes self-supercharging device, also is provided with boost port on the described vehicle-mounted bottle, and boost port links to each other with the input port of self-supercharging device, and the delivery port of self-supercharging device links to each other with the return-air mouth.
2. the gas supply system of liquefied natural gas vehicle according to claim 1 is characterized in that: described return-air mouth also is connected with atmospheric valve and at least one safety valve.
3. the gas supply system of liquefied natural gas vehicle according to claim 1 and 2, it is characterized in that: described self-supercharging device comprises: the supercharging shutoff valve that is serially connected, supercharging pressure regulating valve and blwr.
4. the gas supply system of liquefied natural gas vehicle according to claim 3, it is characterized in that: described blwr is empty bath formula temperature booster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010018126A CN101791946A (en) | 2010-01-14 | 2010-01-14 | Gas supply system of liquefied natural gas vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010018126A CN101791946A (en) | 2010-01-14 | 2010-01-14 | Gas supply system of liquefied natural gas vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101791946A true CN101791946A (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010018126A Pending CN101791946A (en) | 2010-01-14 | 2010-01-14 | Gas supply system of liquefied natural gas vehicle |
Country Status (1)
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| CN (1) | CN101791946A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642608A (en) * | 2012-05-07 | 2012-08-22 | 湖北三江船艇科技有限公司 | Liquefied natural gas yacht |
| CN102705701A (en) * | 2011-04-29 | 2012-10-03 | 张家港富瑞特种装备股份有限公司 | Gas supply device for engine |
| CN104500967A (en) * | 2014-12-26 | 2015-04-08 | 山东益华燃气设备有限公司 | LNG vehicle gas refilling waste gas recycling system and LNG vehicle gas refilling waste gas recycling method |
| CN103380286B (en) * | 2011-02-25 | 2016-05-04 | 三菱重工业株式会社 | The liquid gas fuel supply method of gas-fuel feeder, spraying high-pressure gas formula diesel engine and spraying high-pressure gas formula diesel engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2194985Y (en) * | 1994-02-26 | 1995-04-19 | 四川省绵阳市科阳低温设备公司 | Automotive fuel supply device using liquefied natural gas as fuel |
| EP1529951A1 (en) * | 2003-11-06 | 2005-05-11 | Gaveco AB | A method and a system for disconnection of a fuel supply |
| JP2009108763A (en) * | 2007-10-30 | 2009-05-21 | Toyota Motor Corp | Gas fuel supply device and pressure drop pipe specifying method |
| CN201334967Y (en) * | 2009-01-13 | 2009-10-28 | 新疆广汇液化天然气发展有限责任公司 | Liquefied natural gas self-pressurization device |
| CN201354692Y (en) * | 2008-12-18 | 2009-12-02 | 东风汽车公司 | Vehicle-borne liquefied natural gas engine gas supply device with liquid booster pump |
| CN201597435U (en) * | 2010-01-14 | 2010-10-06 | 张家港富瑞特种装备股份有限公司 | Gas supply system of liquefied natural gas vehicle |
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2010
- 2010-01-14 CN CN201010018126A patent/CN101791946A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2194985Y (en) * | 1994-02-26 | 1995-04-19 | 四川省绵阳市科阳低温设备公司 | Automotive fuel supply device using liquefied natural gas as fuel |
| EP1529951A1 (en) * | 2003-11-06 | 2005-05-11 | Gaveco AB | A method and a system for disconnection of a fuel supply |
| JP2009108763A (en) * | 2007-10-30 | 2009-05-21 | Toyota Motor Corp | Gas fuel supply device and pressure drop pipe specifying method |
| CN201354692Y (en) * | 2008-12-18 | 2009-12-02 | 东风汽车公司 | Vehicle-borne liquefied natural gas engine gas supply device with liquid booster pump |
| CN201334967Y (en) * | 2009-01-13 | 2009-10-28 | 新疆广汇液化天然气发展有限责任公司 | Liquefied natural gas self-pressurization device |
| CN201597435U (en) * | 2010-01-14 | 2010-10-06 | 张家港富瑞特种装备股份有限公司 | Gas supply system of liquefied natural gas vehicle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103380286B (en) * | 2011-02-25 | 2016-05-04 | 三菱重工业株式会社 | The liquid gas fuel supply method of gas-fuel feeder, spraying high-pressure gas formula diesel engine and spraying high-pressure gas formula diesel engine |
| CN102705701A (en) * | 2011-04-29 | 2012-10-03 | 张家港富瑞特种装备股份有限公司 | Gas supply device for engine |
| CN102642608A (en) * | 2012-05-07 | 2012-08-22 | 湖北三江船艇科技有限公司 | Liquefied natural gas yacht |
| CN104500967A (en) * | 2014-12-26 | 2015-04-08 | 山东益华燃气设备有限公司 | LNG vehicle gas refilling waste gas recycling system and LNG vehicle gas refilling waste gas recycling method |
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Application publication date: 20100804 |