CN102505999A - Method and device for recycling gas exhausted by liquefied natural gas (LNG) transporting tank car - Google Patents
Method and device for recycling gas exhausted by liquefied natural gas (LNG) transporting tank car Download PDFInfo
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- CN102505999A CN102505999A CN2011104373411A CN201110437341A CN102505999A CN 102505999 A CN102505999 A CN 102505999A CN 2011104373411 A CN2011104373411 A CN 2011104373411A CN 201110437341 A CN201110437341 A CN 201110437341A CN 102505999 A CN102505999 A CN 102505999A
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Abstract
The invention discloses a method and device for recycling gas exhausted by a liquefied natural gas (LNG) transporting tank car, and the device comprises a tow tractor, a jar of the LNG tank car, a safety valve, a gas exhaust guide pipe, a buffer tank and an engine, wherein the safety valve is mounted on the jar of the LNG tank car; the engine is mounted on the tow tractor and is provided with a co-combustion system; one end of the gas exhaust guide pipe is mounted on a gas exhaust port of the safety valve, and the other end of the gas exhaust guide pipe is connected with the buffer tank in a closed manner; and the buffer tank is connected with the engine through a gas pipeline. By utilizing the method and the device disclosed by the invention, the natural gas exhausted by the LNG transporting car can be collected, so the exhaust pollution is reduced, potential safety hazards are eliminated, the exhausted natural gas can be effectively utilized, and energy sources are saved.
Description
Technical field
The present invention relates to a kind of exhaust gas recovery and utilize method and device thereof, specifically a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method and device thereof.
Background technique
LNG (LNG Liquefied natural gas) transportation tank car is made up of tractor and LNG tank car jar, and the LNG liquified natural gas is stored in the tank car jar with-162 ℃ of ultralow temperature.The jar internal pressure generally has only 1-3Pa, cryogenic tank safety valve setting 7Pa exhaust pressure.Because the influence of vehicle driving and ambient temperature, the low temperature liquid LNG in the LNG tank car jar can flash to natural gas in gaseous state, and the exhaust phenomenon often takes place by (more contain summer).When inner gas pressure during greater than 7Pa, safety valve is opened, to the airborne release rock gas.Rock gas discharges sky, and second befouling environment exists potential safety hazard first, and three are caused energy waste.With Inner Mongol Wuhai to Guangzhou, Guangdong transport mileage five over thousands of kilometers, autumn, environment mean temperature 24.3 degree were example, and according to incompletely statistics, the liquified natural gas exhaust loss of 20 tons of LNG transportation tank cars of 55 cubes of jars in transportation process reaches 400kg.
Summary of the invention
Technical problem to be solved by this invention is to propose a kind of can the rock gas that emit in the transportation process effectively the collection in addition and uses; Both reduce exhaust emission, eliminated LNG conveying trough vehicle exhaust recoverying and utilizing method and the device thereof of potential safety hazard, energy saving again.
For solving the problems of the technologies described above, a kind of LNG conveying trough of the present invention vehicle exhaust recoverying and utilizing method comprises the steps: 1. at the safety valve relief opening of tank car jar the exhaust leading pipe to be installed; The burning system of mixing is installed on the motor of tractor, and said the motor of mixing the burning system is housed can rock gas be fuel both, can other raw material be fuel also; 2. when the pressure in the tank car jar during, open the safety-valve, guide to the rock gas of discharging in the damping device through said exhaust leading pipe greater than the setting value of safety valve; 3. be incorporated into the motor that being equipped with of tractor mixed the burning system to the rock gas in the damping device, motor begins to mix the burning rock gas.
Above-mentioned a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method for the sake of security, is equipped with the damping device safety valve on said damping device, set discharge pressure value; When the pressure in the said damping device reaches the discharge pressure value of setting, the safety dumping rock gas.
Above-mentioned a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method, the setting discharge pressure value of said damping device safety valve is 6.5bar.
Above-mentioned a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method, it also is provided with electronic control unit ECU; Rock gas in the damping device is being incorporated on the pipeline that the motor of mixing the burning system is housed, is being provided with pressure transducer and solenoid valve; The motor of said pressure transducer, solenoid valve and said tractor is linked to each other with said electronic control unit ECU respectively; The pressure that detects damping device as said electronic control unit ECU is during greater than the atmospheric pressure value set; Said electronic control unit ECU just signals and opens said solenoid valve; Rock gas in the said damping device is incorporated into the motor of mixing the burning system is housed, said motor begins to mix the burning rock gas; During atmospheric pressure value that the pressure that detects said damping device as said electronic control unit ECU equals to set; Said electronic control unit ECU just signals and closes said solenoid valve; Stop to supply rock gas to said motor, said motor just is in the state of other fuel of burning.
Above-mentioned a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method, the atmospheric pressure value of said setting be motor mix burn needed atmospheric pressure value and a definite value and.
Above-mentioned a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method, said definite value is 3bar.
A kind of LNG conveying trough vehicle exhaust recycle device; Comprise tractor, LNG tank car jar, safety valve, exhaust leading pipe, knock out drum and motor; Said safety valve is installed on the said LNG tank car jar; Said motor is loaded on the said tractor, and said motor is equipped with the burning system of mixing, and an end of said exhaust leading pipe is installed in the relief opening of said safety valve; The other end of said exhaust leading pipe links to each other with said knock out drum is airtight, and said knock out drum links to each other through gas pipeline with said motor.
Above-mentioned a kind of LNG conveying trough vehicle exhaust recycle device is equipped with the knock out drum safety valve on the said knock out drum.
Above-mentioned a kind of LNG conveying trough vehicle exhaust recycle device; It also comprises electronic control unit ECU; Pressure transducer and solenoid valve are installed on the said gas pipeline, and said pressure transducer, solenoid valve and said motor link to each other with electronic control unit ECU respectively.
Above-mentioned a kind of LNG conveying trough vehicle exhaust recycle device, the setting atmospheric pressure value when said solenoid valve is opened be motor mix burn needed atmospheric pressure value and a definite value and; The setting discharge pressure value of said damping device safety valve is 6.5bar.
The present invention is owing to adopted technique scheme, and it has formed following work cycle: when pressure risings → pressure is greater than the setting value of safety valve in the LNG tank car jar safety valve discharging → damping device (knock out drum) reclaim → when pressure reach setting value (mix like motor when burning needed atmospheric pressure value+3bar) → air pressure in the motor air feed is mixed burnings → damping device (knock out drum) equal setting value (when mixing the needed atmospheric pressure value of burning+3bar) like motor → stop to use other fuel (like diesel oil) driving to motor air feed → motor.When pressure in the LNG tank car jar is elevated to when opening the safety-valve, system just gets into next usefulness gas and mixes and burn circulation.Therefore, utilize the inventive method and device just to collect the rock gas that the LNG carrier platoon is released, both reduced exhaust emission, eliminated potential safety hazard, make that again the rock gas of discharging can be effectively utilized, practiced thrift the energy.With 380 hp diesel motor tractors is example, in 5000 kilometers stroke, can effectively utilize the LNG of 400kg, is equivalent to practice thrift 2500 yuan, can practice thrift 0.5 yuan for every kilometer.LNG fleet for engaging in transport for a long time has appreciable economic benefit and social benefit.
Description of drawings
Fig. 1 is the structural representation of LNG conveying trough vehicle exhaust recycle device of the present invention.
Embodiment
As shown in Figure 1; LNG conveying trough vehicle exhaust recycle device of the present invention comprises tractor and LNG tank car jar 1, LNG tank car jar safety valve 2, exhaust leading pipe 3, knock out drum 4, motor 10 and electronic control unit ECU9; Motor 10 is loaded on the tractor; The burning system of mixing is installed on the motor 10, can uses diesel oil to act as a fuel separately, also can rock gas and diesel oil mix burning.LNG tank car jar safety valve 2 is installed on the LNG tank car jar 1, and an end of exhaust leading pipe 3 is installed on the relief opening of safety valve 2, the other end of exhaust leading pipe 3 and 5 airtight linking to each other of knock out drum.On the jar 4 knock out drum safety valve 5 is installed.Knock out drum 4 links to each other through gas pipeline 8 with motor 10.Airtight being connected on the knock out drum 4 of one end of buffering gas pipeline 8, the other end of gas pipeline 8 links to each other with motor 10 after connecting pressure transducer 6 and high-pressure solenoid valve 7 successively.Pressure transducer 6 through motor transducing signal wire harness 13 and engine control signal line 14, links to each other with electronic control unit ECU9 respectively through solenoid valve signaling line 12, motor 10 through sensor signal lines 11, high-pressure solenoid valve 7.
The working principle of recycle device of the present invention (being the LNG recoverying and utilizing method) is as follows:
1.LNG the low temperature liquid LNG in the tank car jar 1 can flash to natural gas in gaseous state, the exhaust pressure value of the safety valve 2 of general LNG tank car jar 1 is set in P1=7bar;
2. when the inside gas pressure of LNG tank car jar 1 during greater than P1, safety valve 2 is opened, to exhaust leading pipe 3 discharging rock gases;
3. exhaust leading pipe 3 is guided to knock out drum 4 to the rock gas of discharging;
4. for the sake of security, knock out drum safety valve 5 has been installed on the knock out drum 4, the setting discharge pressure of this safety valve 5 is P2=6.5bar.Pressure in knock out drum 4 reaches 6.5bar, just can discharge rock gas safely;
5. pressure transducer 6 and high-pressure solenoid valve 7 have been installed on the pipeline of gas pipeline 8.(P3 is that motor is mixed and burnt needed atmospheric pressure value to the pressure that detects rock gas in the knock out drum 4 through pressure transducer 6 as electronic control unit ECU9 greater than P3+3bar; Be generally 3bar) time; Electronic control unit ECU9 just signals and opens high-pressure solenoid valve 7; Gas pipeline 8 is input to the rock gas in the knock out drum 4 motor 10 of mixing the burning system is housed, and motor 10 begins to mix the burning rock gas.When the pressure that detects knock out drum 4 as electronic control unit ECU9 equaled P3, then electronic control unit ECU9 just signaled and closes high-pressure solenoid valve 7, and system just stops to supply rock gas to motor, and motor just is in combustion diesel oil state.
Used electronic control unit ECU9 is made up of microcomputer, input, output and control circuit etc. in the inventive method and the device; Its function is to carry out computing, processing, judgement according to the information that the program of its internal memory and data are taken into account various sensors inputs to air mass flow; Output order then; To motor electrical pulsing signal is provided, to control employed fuel source and discharge rate.ECU is the existing common technology of automotive field, and the motor that dress is mixed the burning system also is the state of the art, repeats no more here.
Claims (10)
1. a LNG conveying trough vehicle exhaust recoverying and utilizing method is characterized in that, it comprises the steps: 1. at the safety valve relief opening of tank car jar the exhaust leading pipe to be installed; The burning system of mixing is installed on the motor of tractor, and said the motor of mixing the burning system is housed can rock gas be fuel both, can other raw material be fuel also; 2. when the pressure in the tank car jar during, open the safety-valve, guide to the rock gas of discharging in the damping device through said exhaust leading pipe greater than the setting value of safety valve; 3. be incorporated into the motor that being equipped with of tractor mixed the burning system to the rock gas in the damping device, motor begins to mix the burning rock gas.
2. a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method as claimed in claim 1 is characterized in that, the damping device safety valve is installed on said damping device, sets discharge pressure value; When the pressure in the said damping device reaches the discharge pressure value of setting, the safety dumping rock gas.
3. a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method as claimed in claim 2 is characterized in that the setting discharge pressure value of said damping device safety valve is 6.5bar.
4. like claim 1,2 or 3 described a kind of LNG conveying trough vehicle exhaust recoverying and utilizing methods, it is characterized in that it also is provided with electronic control unit ECU; Rock gas in the said damping device is being incorporated on the pipeline that the motor of mixing the burning system is housed, is being provided with pressure transducer and solenoid valve; The motor of said pressure transducer, solenoid valve and said tractor is linked to each other with said electronic control unit ECU respectively; The pressure that detects damping device as said electronic control unit ECU is during greater than the atmospheric pressure value set; Said electronic control unit ECU just signals and opens said solenoid valve; Rock gas in the said damping device is incorporated into the motor of mixing the burning system is housed, said motor begins to mix the burning rock gas; During atmospheric pressure value that the pressure that detects said damping device as said electronic control unit ECU equals to set; Said electronic control unit ECU just signals and closes said solenoid valve; Stop to supply rock gas to said motor, said motor just is in the state of other fuel of burning.
5. a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method as claimed in claim 4 is characterized in that, the atmospheric pressure value of said setting be motor mix burn needed atmospheric pressure value and a definite value and.
6. a kind of LNG conveying trough vehicle exhaust recoverying and utilizing method as claimed in claim 5 is characterized in that said definite value is 3bar.
7. LNG conveying trough vehicle exhaust recycle device; Comprise tractor, LNG tank car jar, safety valve and motor, said safety valve is installed on the said LNG tank car jar, and said motor is loaded on the said tractor; It is characterized in that; It also comprises exhaust leading pipe and knock out drum, and an end of said exhaust leading pipe is installed in the relief opening of said safety valve, and the other end of said exhaust leading pipe links to each other with said knock out drum is airtight; Said knock out drum links to each other through gas pipeline with said motor, and said motor is equipped with the burning system of mixing.
8. a kind of LNG conveying trough vehicle exhaust recycle device as claimed in claim 7 is characterized in that, the knock out drum safety valve is installed on the said knock out drum.
9. like claim 7 or 8 described a kind of LNG conveying trough vehicle exhaust recycle devices; It is characterized in that; It also comprises electronic control unit ECU; Pressure transducer and solenoid valve are installed on the said gas pipeline, and said pressure transducer, solenoid valve and said motor link to each other with electronic control unit ECU respectively.
10. a kind of LNG conveying trough vehicle exhaust recycle device as claimed in claim 9 is characterized in that, the setting atmospheric pressure value when said solenoid valve is opened be motor mix burn needed atmospheric pressure value and a definite value and; The setting discharge pressure value of said damping device safety valve is 6.5bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104373411A CN102505999A (en) | 2011-12-23 | 2011-12-23 | Method and device for recycling gas exhausted by liquefied natural gas (LNG) transporting tank car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104373411A CN102505999A (en) | 2011-12-23 | 2011-12-23 | Method and device for recycling gas exhausted by liquefied natural gas (LNG) transporting tank car |
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| CN102505999A true CN102505999A (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104373411A Pending CN102505999A (en) | 2011-12-23 | 2011-12-23 | Method and device for recycling gas exhausted by liquefied natural gas (LNG) transporting tank car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10955088B2 (en) | 2016-12-01 | 2021-03-23 | Volvo Truck Corporation | Fuel tank arrangement with a gas burning arrangement and a pressure controlled valve to heat auxiliary vehicle components |
| CN112810432A (en) * | 2021-01-11 | 2021-05-18 | 东风汽车股份有限公司 | Integrated fuel supply device of light LNG (liquefied Natural gas) commercial vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19533863A1 (en) * | 1995-09-13 | 1997-03-20 | Bayerische Motoren Werke Ag | Liquefied gas e.g. LNG fuel supply unit for IC engine |
| JP2004308844A (en) * | 2003-04-09 | 2004-11-04 | Tokyo Gas Co Ltd | Fuel supply system and its operating method |
| JP2011080363A (en) * | 2009-10-02 | 2011-04-21 | Ud Trucks Corp | Lng fuel supply system |
| WO2011053164A1 (en) * | 2009-11-02 | 2011-05-05 | Hamworthy Gas Systems As | An lng fuel tank system for at least one gas engine used for ship propulsion |
| CN202381193U (en) * | 2011-12-23 | 2012-08-15 | 嘉兴市力讯汽车电子有限公司 | Exhaust recycling device of LNG (Liquefied Natural Gas) transportation tank car |
-
2011
- 2011-12-23 CN CN2011104373411A patent/CN102505999A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19533863A1 (en) * | 1995-09-13 | 1997-03-20 | Bayerische Motoren Werke Ag | Liquefied gas e.g. LNG fuel supply unit for IC engine |
| JP2004308844A (en) * | 2003-04-09 | 2004-11-04 | Tokyo Gas Co Ltd | Fuel supply system and its operating method |
| JP2011080363A (en) * | 2009-10-02 | 2011-04-21 | Ud Trucks Corp | Lng fuel supply system |
| WO2011053164A1 (en) * | 2009-11-02 | 2011-05-05 | Hamworthy Gas Systems As | An lng fuel tank system for at least one gas engine used for ship propulsion |
| CN202381193U (en) * | 2011-12-23 | 2012-08-15 | 嘉兴市力讯汽车电子有限公司 | Exhaust recycling device of LNG (Liquefied Natural Gas) transportation tank car |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10955088B2 (en) | 2016-12-01 | 2021-03-23 | Volvo Truck Corporation | Fuel tank arrangement with a gas burning arrangement and a pressure controlled valve to heat auxiliary vehicle components |
| CN112810432A (en) * | 2021-01-11 | 2021-05-18 | 东风汽车股份有限公司 | Integrated fuel supply device of light LNG (liquefied Natural gas) commercial vehicle |
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Application publication date: 20120620 |