CN201110459Y - Liquefied natural gas vehicle air feed system - Google Patents
Liquefied natural gas vehicle air feed system Download PDFInfo
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- CN201110459Y CN201110459Y CNU2007201779579U CN200720177957U CN201110459Y CN 201110459 Y CN201110459 Y CN 201110459Y CN U2007201779579 U CNU2007201779579 U CN U2007201779579U CN 200720177957 U CN200720177957 U CN 200720177957U CN 201110459 Y CN201110459 Y CN 201110459Y
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- valve
- cutting ferrule
- natural gas
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- liquefied natural
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Abstract
A liquefied natural gas supplication system belongs to the gas vehicle supplication field, which comprises an LNG storage tank (17) which is connected with an evaporator (7) through a stainless steel pipe line (3), a double-cutting sleeve ball valve I (4) and a double-cutting sleeve triplet (5) which are arranged in front of the evaporator (7), a water feed stop valve (1) which is arranged between the double-cutting sleeve ball valve I and the double-cutting sleeve triplet, a double-cutting sleeve ball valve II (9), an electromagnetic valve (11) and a pressure regulation valve (13) which are positioned behind the evaporator (7) in turn, a double-filament (12) which is arranged between the electromagnetic valve (11) and the pressure regulation valve (13), a pressure-resistant rubber hose (14) which is arranged behind the pressure regulation valve (13) and an electromagnetic valve power controller (16) of the electromagnetic valve (11) which controls a gas feed circuit in turn. The liquefied natural gas supplication system realizes direct recycle of the residual liquid, reduces gas waste and atmosphere pollution, which adopts LNG technique of a saturation technique vehicle which is simple and reliable in technique, convenient and economic in operation.
Description
Technical field
The utility model relates to a kind of LNGV (liquefied natural gas vehicle) (LNGV) air supply system, is primarily aimed at the low temperature of LNG Liquefied natural gas, the fuel supplying device of inflammable and explosive and high expansion ratio characteristic, belongs to gas combustion automobile air feeder field.
Background technique
Present known rock gas is compressed natural gas (CNG) as another usage mode of automotive fuel, the characteristics of compressed natural gas are to be filled in the vehicle-mounted steel cylinder after natural pressure is reduced to 20Mpa, its air supply system needs higher Pressure reducing ratio, through satisfying the requirement of motor to fuel pressure after 3 grades of decompressions, the operating temperature temperature is not less than-40 ℃.And LNG acts as a fuel pressure only up to 1.5Mpa, and fuel temperature is minimum to be-160 ℃, and surplus liquid measure is big when maintenance.Obviously the CNG air supply system is not suitable for the requirement of fuel low temperature, and decompression progression is too much, can not reclaim the surplus liquid of maintenance.
LNG is as vehicle fuel, and 2 technical problems that trouble for a long time are how to solve pressure control and liquid conveying.The lasting rising of pressure will cause excessive discharging in the LNG storage process, and the component of LNG also can become heavy gradually in the container, influences the performance and the life-span of motor then.Solution around these two problems can be divided into two kinds with automobile-used LNG technology: cross cold technology and saturation process.Wherein cross the automobile-used air supply system of cold technology, need set up pressurization system, make system more complicated, the economic performance variation; Saturation process LNG air supply system adopts an economic valve 18 to control the pressure of automobile-used storage tank automatically, need not increase the liquid supercharging equipment, and when pressure of storage tank was higher than the setting value of economic valve 18, economic valve was opened, and the LNG steam is preferentially exported; When pressure of storage tank was lower than setting value, economic valve cut out, and had only the LNG saturated liquids to flow out.
The automobile-used LNG technology of saturation process is simple, reliable, easy to operate because of its technology, and economic performance was better than the automobile-used LNG of cold technology.
The model utility content
The purpose of this utility model is the special-purpose air supply system as vehicle fuel for a kind of LNG, thereby satisfies the characteristic of LNG, ensures air feed safety, reliable; This system can realize again the surplus liquid of storage tank is reclaimed automatic control with solenoid valve simultaneously;
The utility model adopts the automobile-used LNG technology of saturation process to realize pressure control and liquid conveying;
Power of electromagnetic valve controller of the present utility model adopts generator N extremely electric as control signal.
The technical problems to be solved in the utility model is: air supply system satisfies the low temperature of LNG own, high expansion ratio and inflammable and explosive characteristic, to solenoid valve realization control well, surplus liquid is reclaimed, thereby the air feed of having realized the LNGV air supply system is continuous, stable, reliable, recovery and safe in utilization.
The utility model provides a kind of LNGV (liquefied natural gas vehicle) air supply system, it is characterized in that, this system comprises that successively LNG storage tank 17 connects vaporizer 7 through stainless steel pipeline 3;
Two cutting ferrule ball valve I 4 and pair cutting ferrule threeway 5 were set before vaporizer 7, control by feed flow stop valve 1 before two cutting ferrule ball valve I 4 and the two cutting ferrule threeways 5;
Set gradually two cutting ferrule ball valve II 9, solenoid valve 11 and pressure regulator valve 13 after the vaporizer 7; Solenoid valve 11 and being used to is regulated to adopt between the pressure regulator valve 13 of supply gas pressure and flow silk 12 is directly linked together; Pneumatic hose 14 is set behind the pressure regulator valve 13; Solenoid valve 11 is by power of electromagnetic valve controller 16 control break-make air feed loops;
Concrete: stainless steel pipeline 3 adopts 316 or 304 stainless steel pipelines to satisfy the requirement to low temperature; Pipeline connects the removable seal connection of adopting the two cutting ferrule joints realization of 316 or 304 stainless steels pipeline, and satisfies the requirement of LNG low temperature; Solenoid valve 11 adopts the low temperature explosion-proof solenoid valves to satisfy LNG low temperature, inflammable and explosive requirement, the automatic control that power of electromagnetic valve controller 16 is realized solenoid valve 11; Storage tank 17 has been realized the control of pressure of storage tank by economic valve 18, being located at vaporizer threeway 5 and two cutting ferrule ball valves before can directly reclaim the surplus liquid of storage tank, and the two cutting ferrule ball valves 9 that are located between vaporizer 7 and the solenoid valve 11 are realized the break-make of air supply system is controlled in the normal temperature section.
The utility model advantage: when LNG outflow storage tank enters this system, at first pass through vaporizer, cryogenic LNG fuel becomes natural gas in gaseous state through the automobile engine cooling water heating and enters the downstream, motor by power of electromagnetic valve controller 16 control break-make air feed loops, is satisfied to Fuel Demand through pressure regulator valve 13 adjusting supply gas pressures and flow by solenoid valve 11 again in the downstream; In the time need keeping in repair, surplus liquid is directly reclaimed, reduced the waste of fuel and the pollution of atmosphere by threeway and the two cutting ferrule ball valves that are located at before the vaporizer to storage tank; Adopt the automobile-used LNG technical matters of saturation process simple, reliable, easy to operate, economy.
Description of drawings:
Fig. 1: the utility model air supply system figure.
Fig. 2: power of electromagnetic valve controller principle figure.
1. feed flow stop valves among the figure, 2. couple cutting ferrule straight coupling I, 3. stainless steel pipeline, 4. couple cutting ferrule ball valve I, 5. two cutting ferrule threeways, 6. couple cutting ferrule straight coupling II, 7. vaporizer, 8. couple cutting ferrule straight coupling III, 9 couples of cutting ferrule ball valve II, 10. couple cutting ferrule straight coupling IV, 15. couples of cutting ferrule straight coupling V, 11. solenoid valve, 12. pairs of silks, 13. pressure regulator valves, 14. pneumatic hose, 16. power-supply controller of electric, 17.LNG storage tank, 18. economic valve, A1. engine coolant inlet, the outlet of A2. engine coolant.
Embodiment
The working procedure of LNGV air supply system is as shown in Figure 1, when LNG outflow LNG storage tank 17 enters air supply system, at first enter vaporizer 7 through stainless steel pipeline 3, cryogenic LNG fuel heats in vaporizer through automobile engine cooling liquid and becomes natural gas in gaseous state and enter the downstream, downstream electrical magnet valve 11 satisfies motor to Fuel Demand through pressure regulator valve 13 adjusting supply gas pressures and flow again by power of electromagnetic valve controller 16 control break-make air feed loops.In the time need keeping in repair, under the artificial control of feed flow stop valve 1, surplus liquid is directly reclaimed, reduced the waste of fuel and the pollution of atmosphere by two cutting ferrule threeways 5 and couple cutting ferrule ball valve I 4 that are located at before the vaporizer to storage tank.Two cutting ferrules removably connect and have overcome the difference of tubing, wall thickness, hardness, have realized that repeated removal does not have to leak preferably to connect.The silver-plated technology of special nut thread stops part to be killed, and can be suitable for the occasion of high and low temperature alternation.
Low-temperature zone employing 316 or 304 stainless steel pipelines 3 have satisfied the requirement to low temperature, and the two cutting ferrule joints of employing 316 or 304 stainless steels are realized the removable seal connection of pipeline and satisfied the requirement of LNG low temperature.Low temperature explosion-proof solenoid valve 11 satisfies LNG low temperature, inflammable and explosive requirement, the automatic control that power of electromagnetic valve controller 16 is realized solenoid valve.Vaporizer 7 and the LNG storage tank 17 economic valve 18 by storage tank keeps a pressure system before and after making the LNG evaporation, has realized the not requirement of superpressure of expanding of LNG height.Be located at vaporizer 7 threeway 5 and two cutting ferrule ball valve I 4 before and realized the surplus liquid of storage tank is reclaimed, be located at the control that the two cutting ferrule ball valve II 9 between vaporizer 7 and the solenoid valve 11 have realized combustion gas after the re-heat.
The action principle of power of electromagnetic valve controller as shown in Figure 2, its 6 lead-in wires connect respectively: 1, solenoid valve, 2, OCL output control line, 3 connect the automobile engine starting button, 4 sending and receiving motor N are electricity extremely, 5, ground strap, 6, power line.The lead-in wire 3 with 4 two input ends be mutually or relation.Promptly under the situation of lead-in wire 6 normal power supplies, lead-in wire 3 or 4 needs only an input high petential, and output terminal lead-in wire 2 is promptly exported low potential, and solenoid valve gets electric opening.When input end 3 and 4 all was 0V, output terminal 2 presented high-impedance state, solenoid valve not electric and be in closed condition.Power-supply controller of electric inside is a semiconductor hybrid circuit, has charging time-delay and switching function.
The power supply of power-supply controller of electric: power line-insurance-line-power-supply controller of electric 6.-5.-bonding.
The working procedure of power-supply controller of electric
Open the vehicle power supply main switch, power controller circuit begins power supply.Power-supply controller of electric 1 end output this moment 24V voltage, 2 ends output low potential, solenoid valve is opened, and after several seconds of delaying time, 2 ends present high-impedance state, and closed electromagnetic valve cuts off fuel gas path.
When closes ignition, halt switch, press start button, power supply-insurance-igniting, halt switch-start button-power-supply controller of electric 3., power-supply controller of electric obtains the trigger signal of start button, by output 24V voltage is to solenoid valve between 1.-2., solenoid valve is opened.After power-supply controller of electric obtained the trigger signal of start button, the output voltage time did not start as motor for disconnecting behind the start button 5 seconds, and voltage is output as 0V, closed electromagnetic valve.
Behind engine start, by generator N utmost point output voltage-power-supply controller of electric 4., power-supply controller of electric obtains the trigger signal of generator, and continuation output 24V voltage makes to solenoid valve and continues to be in open mode.
When killing engine or during generator N pole tension blackout, power-supply controller of electric was delayed time after 5 seconds, and output terminal 2 presents high-impedance state, cuts off the electric current of solenoid valve, and closed electromagnetic valve cuts off fuel gas path.
Power controller circuit work purpose is, prevent motor can not be timely under the situation of car, in time with closed electromagnetic valve, prevent gas leakage.
Claims (3)
1, a kind of LNGV (liquefied natural gas vehicle) air supply system is characterized in that, this system comprises that successively LNG storage tank (17) connects vaporizer (7) through stainless steel pipeline (3);
At vaporizer (7) two cutting ferrule ball valve I (4) and two cutting ferrule threeway (5) are set before, two cutting ferrule ball valve I (4) and two cutting ferrule threeway (5) are before by feed flow stop valve (1) control;
Vaporizer (7) sets gradually two cutting ferrule ball valve II (9), solenoid valve (11) and pressure regulator valve (13) afterwards; Solenoid valve (11) and be used to regulate adopt between the pressure regulator valve (13) of supply gas pressure and flow silk (12) is directly linked together; Pneumatic hose (14) is set behind the pressure regulator valve (13); Solenoid valve (11) is by power of electromagnetic valve controller (16) control break-make air feed loop.
2, a kind of LNGV (liquefied natural gas vehicle) air supply system according to claim 1 is characterized in that, solenoid valve (11) adopts the low temperature explosion-proof solenoid valve.
3, a kind of LNGV (liquefied natural gas vehicle) air supply system according to claim 1 is characterized in that, pipeline connects the two cutting ferrule Connecting format of employing between the parts of this system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201779579U CN201110459Y (en) | 2007-09-30 | 2007-09-30 | Liquefied natural gas vehicle air feed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201779579U CN201110459Y (en) | 2007-09-30 | 2007-09-30 | Liquefied natural gas vehicle air feed system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201110459Y true CN201110459Y (en) | 2008-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201779579U Expired - Fee Related CN201110459Y (en) | 2007-09-30 | 2007-09-30 | Liquefied natural gas vehicle air feed system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201110459Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075115A (en) * | 2013-03-27 | 2014-10-01 | 上海飞奥燃气设备有限公司 | Skid-mounted LNG (liquefied natural gas) bottle group gasification supply station |
| CN105202363A (en) * | 2013-07-24 | 2015-12-30 | 沈军 | Device for recovering liquid residue and gas residue in liquid natural gas transport vehicle tank |
-
2007
- 2007-09-30 CN CNU2007201779579U patent/CN201110459Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075115A (en) * | 2013-03-27 | 2014-10-01 | 上海飞奥燃气设备有限公司 | Skid-mounted LNG (liquefied natural gas) bottle group gasification supply station |
| CN104075115B (en) * | 2013-03-27 | 2016-09-07 | 上海飞奥燃气设备有限公司 | A kind of skid-mounted type LNG cylinder group vaporization supply station |
| CN105202363A (en) * | 2013-07-24 | 2015-12-30 | 沈军 | Device for recovering liquid residue and gas residue in liquid natural gas transport vehicle tank |
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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: 20080903 Termination date: 20091030 |