CN105089857A - LNG-CNG dual fuel power gas supply system and natural gas automobile - Google Patents
LNG-CNG dual fuel power gas supply system and natural gas automobile Download PDFInfo
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- CN105089857A CN105089857A CN201510434038.4A CN201510434038A CN105089857A CN 105089857 A CN105089857 A CN 105089857A CN 201510434038 A CN201510434038 A CN 201510434038A CN 105089857 A CN105089857 A CN 105089857A
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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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Abstract
The invention discloses an LNG-CNG dual fuel power gas supply system. The LNG-CNG dual fuel power gas supply system comprises an LNG fuel power gas supply system, a CNG fuel power gas supply system, an integrated device and a control device. The integrated device is arranged among the LNG fuel power gas supply system, the CNG fuel power gas supply system and an engine. Through the integrated device, the LNG fuel power gas supply system and the CNG fuel power gas supply system can both be communicated with the engine. The control device controls one of the LNG fuel power gas supply system and the CNG fuel power gas supply system to supply gas to the integrated device. The LNG-CNG dual fuel power gas supply system has the beneficial effects of being high in cruising power, capable of being filled with gas conveniently, easy to operate, high in work efficiency, high in economical efficiency, high in safety and small in occupied space.
Description
Technical field
The present invention relates to automotive field, particularly relate to a kind of LNG-CNG double fuel power air supply system and gas-fueled vehicles.
Background technique
The methane content of rock gas is more than 90%, is good motor car engine fuel.Take rock gas as fuel for motor provides the automobile of power for gas-fueled vehicles.Gas-fueled vehicles are mainly divided into LNG automobile (LNGV (liquefied natural gas vehicle)) and CNG automobile (automobile with compressed natural gas) according to the difference of natural gas vehicle fuel supply system.Natural gas vehicle fuel supply system on market is main mainly with single LNG air supply system or CNG air supply system, wherein LNG air supply system feature is that flying power is strong, but because current LNG gas station is less, therefore, LNG automobile storage is in inflation difficulty, easily there is the problem causing automobile to travel without fuel phenomenon in the process of moving, and LNG need not cause natural gas vaporization for a long time, pressure of the inside of a bottle is increased and causes rock gas to lose heart, final bottle fuel consumption totally, not only causes waste but also cannot start vehicle because running out of gas.And CNG air supply system feature is that gas-filling station is many, inflation is convenient, but there is flying power difference, and in the process of moving, user wants frequently inflate CNG gas cylinder, cause traveling or conveying efficiency low.Storage pressure in addition because of steel cylinder is high, also has certain danger.
Summary of the invention
For this reason, technical problem to be solved by this invention is that the natural gas vehicle fuel supply system of prior art is based on single LNG air supply system or CNG air supply system, thus there is long battery life and the problem that can not take into account of inflation convenience, there is provided that a kind of flying power is strong, inflation is convenient, simple to operate, working efficiency is high, the LNG-CNG double fuel power air supply system of good economy performance and gas-fueled vehicles.
For solving the problems of the technologies described above, a kind of LNG-CNG double fuel power air supply system of the present invention, comprises
LNG fuels and energy air supply system;
CNG fuels and energy air supply system;
Integrated device, is arranged on LNG fuels and energy air supply system, between CNG fuels and energy air supply system and motor, described LNG fuels and energy air supply system, CNG fuels and energy air supply system is all communicated with described motor;
Control gear, control described LNG fuels and energy air supply system, CNG fuels and energy air supply system one of them to described integrated device air feed.
In LNG-CNG double fuel power air supply system of the present invention, described integrated device comprises the main tracheae be communicated with described motor, and by first point of bronchus of described main tracheae branch and second point of bronchus, wherein said first point of bronchus is communicated with the final air outlet of described LNG fuels and energy air supply system, and described second point of bronchus is communicated with the final air outlet of described CNG fuels and energy air supply system.
In LNG-CNG double fuel power air supply system of the present invention, described main tracheae is provided with low pressure filter cleaner.
In LNG-CNG double fuel power air supply system of the present invention, described CNG fuels and energy air supply system comprises CNG gas cylinder, the bottle mouth position being arranged on described CNG gas cylinder controls the bottle-jack valve that described bottleneck opens or closes, by the gas charging valve to gas injection in bottle that pipeline is communicated with described bottleneck, and to be communicated with described gas charging valve by pipeline, to the decompressor of compressed natural gas pressure-reducing gas, the air outlet of described decompressor is communicated with described integrated device.
In LNG-CNG double fuel power air supply system of the present invention, described decompressor is that reduction valve-high-pressure solenoid valve is integrated, described reduction valve-high-pressure solenoid valve is integrated comprises the high-pressure solenoid valve controlling compressed natural gas break-make and the integrated reduction valve reduced pressure to compressed natural gas, described integrated reduction valve enters with thermal medium the thermal medium entrance that pipe is communicated with, and the thermal medium outlet be communicated with thermal medium reflow pipe.
In LNG-CNG double fuel power air supply system of the present invention, described thermal medium enters pipe and is communicated with heating engines intake pipe, and described thermal medium reflow pipe is communicated with heating engines return pipe.
In LNG-CNG double fuel power air supply system of the present invention, between described gas charging valve and described decompressor, be also connected with high pressure filter by pipeline.
In LNG-CNG double fuel power air supply system of the present invention, also comprise safety cover, described CNG fuels and energy air supply system is arranged in described safety cover.
In LNG-CNG double fuel power air supply system of the present invention, described LNG fuels and energy air supply system comprises LNG gas cylinder, by the vaporizer of liquefied natural gas gasifying, and the knock out drum to the rock gas gas decompression out of the air outlet from vaporizer, wherein the gas cylinder liquid outlet of LNG gas cylinder and vaporizer first liquid entering hole of described vaporizer pass through pipeline connection, the air outlet of described vaporizer is communicated with the suction port of described knock out drum, and the air outlet of described knock out drum is communicated with described integrated device.
In LNG-CNG double fuel power air supply system of the present invention, described LNG fuels and energy air supply system also comprises LNG from pressure piping, and described LNG refluxes after the liquified natural gas come from described LNG gas cylinder vaporization supercharging in described LNG gas cylinder from pressure piping.
In LNG-CNG double fuel power air supply system of the present invention, described LNG comprises pressure charging valve from pressure piping, the supercharging liquid outlet of wherein said LNG gas cylinder is communicated with the supercharging liquid entering hole of described pressure charging valve, the liquid outlet of described pressure charging valve is communicated with vaporizer second liquid entering hole of described vaporizer, and the supercharging air outlet of described vaporizer is communicated with by the supercharging gas returning port of pipeline with described LNG gas cylinder.
In LNG-CNG double fuel power air supply system of the present invention, the vaporizer thermal medium entrance of described vaporizer is communicated with heating engines intake pipe by pipeline, and vaporizer thermal medium outlet is communicated with heating engines return pipe.
In LNG-CNG double fuel power air supply system of the present invention, described vaporizer water intake is arranged near described pressure charging valve.
In LNG-CNG double fuel power air supply system of the present invention, described control gear is by controlling the described bottle-jack valve of described CNG gas cylinder, and described high-pressure solenoid valve control CNG fuels and energy air supply system is ventilated in described integrated device.
In LNG-CNG double fuel power air supply system of the present invention, described control gear by controlling the described liquid outlet of described LNG gas cylinder, described supercharging liquid outlet controls described LNG fuels and energy air supply system and ventilates in described integrated device.
A kind of gas-fueled vehicles, comprise vehicle frame, motor, have described LNG-CNG double fuel power air supply system, the integrated device of described LNG-CNG double fuel power air supply system is communicated with by the mixer of voltage regulating and stabilizing device with described motor.
In gas-fueled vehicles of the present invention, described CNG gas cylinder is connected to the side of described vehicle frame by CNG gas cylinder bracket and drawstring, described LNG gas cylinder and the opposite side being connected to described vehicle frame by LNG gas cylinder bracket and drawstring.
In gas-fueled vehicles of the present invention, described CNG gas cylinder is arranged on the described vent systems side of described vehicle frame, described vehicle frame is provided with the transition connecting plate making described CNG gas cylinder and described vent systems keep safety clearance, and described CNG gas cylinder is arranged in described transition connecting plate.
Technique scheme of the present invention has the following advantages compared to existing technology:
1, in the present invention, by described LNG fuels and energy air supply system, CNG fuels and energy air supply system is integrated, one of them of control LNG fuels and energy air supply system during air feed, CNG fuels and energy air supply system is to motor air feed, usual motor is based on LNG fuels and energy air supply system air feed, after the combustion gas of LNG fuels and energy air supply system exhausts, CNG fuels and energy air supply system can be started.Such structure LNG-CNG double fuel power air supply system of the present invention is had flying power is strong, inflation is convenient, simple to operate, working efficiency is high, good economy performance, Security is high, take up room little feature.Simultaneously, the present invention can be applicable to short distance, halfway, long-distance transport and other jobs that requires special skills, the LNG of 275L can ensure the distance travelled that vehicle is enough, when LNG is finished and near when there is no a LNG gas-filling station, can open the CNG air supply system of 65L, support vehicle arrives LNG gas-filling station and inflates.Only can use CNG air supply system during short-distance transport, can complete vehicle weight be reduced, improve combustion gas Economy.In addition, the present invention can be convenient to vehicle launch, and because LNG gasification causes overpressure, LNG gas cylinder can be opened Decompression valves and carry out pressure release, rock gas can be caused to be discharged and cause waste, and CNG there will not be rock gas from arranging phenomenon.Therefore, when vehicle will stop operation the long period, can first by complete for LNG gas cylinder fuel consumption, ensure that CNG gas cylinder fuel is sufficient, CNG can be utilized when vehicle again operation to start vehicle, and CNG support vehicle drives to LNG gas-filling station and inflates simultaneously, both LNG can have been avoided to waste, can ensure that again vehicle still easily starts and travels after stopping using for a long time, improve the operation ease of user, increase work efficiency.
2, in the present invention, described integrated device comprises the main tracheae be communicated with described motor, and by first point of bronchus of described main tracheae branch and second point of bronchus, wherein said first point of bronchus is communicated with the final air outlet of described LNG fuels and energy air supply system, and described second point of bronchus is communicated with the final air outlet of described CNG fuels and energy air supply system.Can make two cover air supply systems both can separate work like this, again can collaborative work, and from main tracheae to motor the supply air line that uses identical, both decreased the quantity of air feed component, saved integral vehicle cost again, killed two birds with one stone.
3, in the present invention, bottle-jack valve and the integrated reduction valve-high-pressure solenoid valve integrated switch opened or closed of control reduction valve-high-pressure solenoid valve are the twice switches in CNG air supply system, to only have after all opening and could normally run, thus the Security of raising gas burning system.
4, in the present invention, the integrated protected cover parcel of the CNG gas cylinder in CNG fuels and energy air supply system, bottle-jack valve, gas charging valve, high pressure filter, reduction valve-high-pressure solenoid valve, can effectively prevent from colliding with, damaging.
5, in the present invention, the integrated thermal medium of reduction valve-high-pressure solenoid valve enters pipe and is communicated with heating engines intake pipe, and thermal medium reflow pipe is communicated with heating engines return pipe.In-engine thermal source can be utilized like this, not only reduce the setting for heat structure, and also a saving the energy.
6, in the present invention, LNG fuels and energy air supply system also comprises LNG from pressure piping, can prevent winter or LNG gas cylinder air pressure low time, liquified natural gas fluid is slow.
7, in the present invention, the vaporizer thermal medium entrance of vaporizer is communicated with heating engines intake pipe by pipeline, and vaporizer thermal medium outlet is communicated with heating engines return pipe.In-engine thermal source can be utilized like this, not only reduce the setting for heat structure, and also a saving the energy.
8, in the present invention, the vehicle frame of gas-fueled vehicles is provided with the transition connecting plate making CNG gas cylinder and vent systems keep safety clearance, and CNG gas cylinder is arranged in transition connecting plate.The setting of transition connecting plate can effectively ensure to reach safe distance between CNG gas cylinder and exhaust system device.
9, the present invention can be applicable to the vehicle of various natural gas engine, as long as the relatively sufficient region of source of the gas all can use, user can select the volume of LNG and CNG gas cylinder according to respective demand.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of LNG-CNG double fuel power air supply system of the present invention;
Fig. 2 is the structural representation of the pilot line of LNG gas cylinder;
In figure, reference character is expressed as: 1-LNG gas cylinder; 2-pressure charging valve; 3-vaporizer; 4-knock out drum; 5-vaporizer thermal medium entrance; 6-vaporizer thermal medium outlet; 7-tee union; 8-low pressure filter cleaner; 9-voltage regulating and stabilizing device; 10-mixer; 11-CNG gas cylinder; 12-bottle-jack valve; 13-gas charging valve; 14-high pressure filter; 15-reduction valve-high-pressure solenoid valve is integrated; 16-thermal medium enters pipe; 17-thermal medium reflow pipe; 18-heating engines intake pipe; 19-heating engines return pipe; 20a-LNG gas cylinder bracket; 20b-drawstring; 21-transition connecting plate; 22a-CNG gas cylinder bracket; 22b-drawstring, reduction valve-high-pressure solenoid valve integrated switch 23.
1-1-gas cylinder liquid outlet; 1-2-supercharging liquid outlet; 1-3-supercharging gas returning port; 2-1-supercharging liquid entering hole; 3-1-vaporizer first liquid entering hole; 3-2-supercharging air outlet; 3-3-vaporizer second liquid entering hole.
Embodiment
Below with reference to accompanying drawing, following mode of execution is used to be further elaborated the present invention.
Embodiment 1
As shown in Figure 1-2, a kind of LNG-CNG double fuel power air supply system of the present embodiment, comprises
LNG fuels and energy air supply system;
CNG fuels and energy air supply system;
Integrated device, is arranged on LNG fuels and energy air supply system, between CNG fuels and energy air supply system and motor, described LNG fuels and energy air supply system, CNG fuels and energy air supply system is all communicated with described motor;
Control gear, control described LNG fuels and energy air supply system, CNG fuels and energy air supply system one of them to described integrated device air feed.
Such scheme is core scheme of the present invention, by described LNG fuels and energy air supply system, CNG fuels and energy air supply system is integrated, one of them of control LNG fuels and energy air supply system during air feed, CNG fuels and energy air supply system is to motor air feed, usual motor is based on LNG fuels and energy air supply system air feed, after the combustion gas of LNG fuels and energy air supply system exhausts, CNG fuels and energy air supply system can be started.Such structure LNG-CNG double fuel power air supply system of the present invention is had flying power is strong, inflation is convenient, simple to operate, working efficiency is high, good economy performance, Security is high, take up room little feature.LNG fuel is identical with CNG fuel, just storage mode is different, LNG mineralization pressure after gasification is about the rock gas of 0.5 MPa, CNG also forms the rock gas being about 0.5 MPa after step-down, the state that these two kinds of air supply systems enter motor is consistent, therefore can ensure engine work.
Preferred described integrated device comprises the main tracheae be communicated with described motor, and by first point of bronchus of described main tracheae branch and second point of bronchus, wherein said first point of bronchus is communicated with the final air outlet of described LNG fuels and energy air supply system, and described second point of bronchus is communicated with the final air outlet of described CNG fuels and energy air supply system.Can make two cover air supply systems both can separate work like this, again can collaborative work, and from main tracheae to motor the supply air line that uses identical, both decreased the quantity of air feed component, saved integral vehicle cost again, killed two birds with one stone.When arranging, first point of bronchus, second point of bronchus can be communicated with by tee union 7 with between main tracheae.Further, in order to obtain clean rock gas, described main tracheae is provided with low pressure filter cleaner 8.
Described CNG fuels and energy air supply system comprises CNG gas cylinder 11, the bottle mouth position being arranged on described CNG gas cylinder 11 controls the bottle-jack valve 12 that described bottleneck opens or closes, by the gas charging valve 13 to gas injection in bottle that pipeline is communicated with described bottleneck, and to be communicated with described gas charging valve 13 by pipeline, to the decompressor of compressed natural gas pressure-reducing gas, the air outlet of described decompressor is communicated with described integrated device.
Preferred described decompressor is reduction valve-high-pressure solenoid valve integrated 15, described reduction valve-high-pressure solenoid valve integrated 15 comprises the high-pressure solenoid valve controlling compressed natural gas break-make and the integrated reduction valve reduced pressure to compressed natural gas, described integrated reduction valve enters with thermal medium the thermal medium entrance that pipe 16 is communicated with, and the thermal medium outlet be communicated with thermal medium reflow pipe 17.Reduction valve-high-pressure solenoid valve integrated switch 23 that described CNG fuels and energy air supply system bottle-jack valve 12 and control reduction valve-high-pressure solenoid valve integrated 15 open or close is the twice switches in CNG air supply system, to only have after all opening and could normally run, thus the Security of raising gas burning system.
Described thermal medium enters pipe 16 and is communicated with heating engines intake pipe 18, and described thermal medium reflow pipe 17 is communicated with heating engines return pipe 19.In-engine thermal source can be utilized like this, not only reduce the setting for heat structure, and also a saving the energy.
Further, in order to obtain clean rock gas, between described gas charging valve 13 and described decompressor, be also connected with high pressure filter 14 by pipeline.
Also comprise safety cover, described CNG fuels and energy air supply system is arranged in described safety cover.The integrated 15 protected cover parcels of CNG gas cylinder 11 in CNG fuels and energy air supply system, bottle-jack valve 12, gas charging valve 13, high pressure filter 14, reduction valve-high-pressure solenoid valve, can effectively prevent from colliding with, damaging.
Described LNG fuels and energy air supply system comprises LNG gas cylinder 1, by the vaporizer 3 of liquefied natural gas gasifying, and the knock out drum 4 to the rock gas gas decompression out of the air outlet from vaporizer 3, wherein the gas cylinder liquid outlet 1-1 of LNG the gas cylinder 1 and vaporizer first liquid entering hole 3-1 of described vaporizer 3 passes through pipeline connection, the air outlet of described vaporizer 3 is communicated with the suction port of described knock out drum 4, and the air outlet of described knock out drum 4 is communicated with described integrated device.
In order to prevent winter or LNG gas cylinder 1 air pressure low time, liquified natural gas fluid is slow, described LNG fuels and energy air supply system also comprises LNG from pressure piping, and described LNG refluxes after the liquified natural gas come from described LNG gas cylinder 1 vaporization supercharging in described LNG gas cylinder 1 from pressure piping.After the rock gas backflow LNG gas cylinder 1 of vaporization, LNG gas cylinder 1 air pressure is increased, forces the light fluid of liquified natural gas.
As shown in Figure 2, preferred described LNG comprises pressure charging valve 2 from pressure piping, the supercharging liquid outlet 1-2 of wherein said LNG gas cylinder 1 is communicated with the supercharging liquid entering hole 2-1 of described pressure charging valve 2, the liquid outlet of described pressure charging valve 2 is communicated with the vaporizer second liquid entering hole 3-3 of described vaporizer 3, and the supercharging air outlet 3-2 of described vaporizer 3 is communicated with the supercharging gas returning port 1-3 of described LNG gas cylinder 1 by pipeline.
Further, the vaporizer thermal medium entrance 5 of described vaporizer 3 is communicated with heating engines intake pipe 18 by pipeline, and vaporizer thermal medium outlet 6 is communicated with heating engines return pipe.In-engine thermal source can be utilized like this, not only reduce the setting for heat structure, and also a saving the energy.
Preferred described vaporizer 3 water intake is arranged near described pressure charging valve 2.
Described control gear is by controlling the described bottle-jack valve 12 of described CNG gas cylinder 11, and described high-pressure solenoid valve control CNG fuels and energy air supply system is ventilated in described integrated device; By controlling the described liquid outlet of described LNG gas cylinder 1, described supercharging liquid outlet 1-2 controls described LNG fuels and energy air supply system and ventilates in described integrated device.
A kind of gas-fueled vehicles, comprise vehicle frame, motor, have described LNG-CNG double fuel power air supply system, the integrated device of described LNG-CNG double fuel power air supply system is communicated with the mixer 10 of described motor by voltage regulating and stabilizing device 9.
Described CNG gas cylinder 11 is connected to the side of described vehicle frame by CNG gas cylinder bracket 22a and drawstring 22b, described LNG gas cylinder 1 and the opposite side being connected to described vehicle frame by LNG gas cylinder bracket 20a and drawstring 20b.LNG gas cylinder bracket 20a and drawstring 20b and CNG gas cylinder bracket 22a and drawstring 22b is with rubber tape, LNG gas cylinder bracket 20a and CNG gas cylinder bracket 22a is " L " type bracket, wherein drawstring upper end and support adopt pin shaft structure, drawstring is firmly connected with " L " type bracket by lower end self-locking nut, now rely between rubber tape and gas cylinder larger frictional force to ensure gas cylinder can not before alter or after move.
Vehicle right side arranging exhaust air system, described CNG gas cylinder 11 is arranged on the described vent systems side of described vehicle frame, for safety, described vehicle frame is provided with the transition connecting plate making described CNG gas cylinder 11 and described vent systems keep safety clearance, and described CNG gas cylinder 11 is arranged in described transition connecting plate 21.The setting of transition connecting plate 21 can effectively ensure to reach safe distance between CNG gas cylinder 11 and exhaust system device.
The low pressure supply air line of the present invention adopts thermoplastic polyurethane, middlely adopts Steel Wire Braid, corrosion-resistant, high pressure resistant, reliability is high, effectively can prevent natural gas leakage.
The working procedure of LNG-CNG double fuel power air supply system of the present invention:
During LNG fuels and energy air supply system air feed, the described bottle-jack valve 12 of control gear control CNG gas cylinder 11, described high-pressure solenoid valve is closed; The described liquid outlet controlling described LNG gas cylinder 1 is opened.Liquified natural gas in LNG gas cylinder 1 flows out from liquid outlet 1-1, vaporizer 3 is entered by vaporizer first liquid entering hole 3-1, engine coolant about 70 DEG C about-90 DEG C is connected to vaporizer thermal medium entrance 5 by heating engines intake pipe 18, thermal medium is generally engine cooling antifreeze liquid, vaporizer 3 internal placement has water channel, heating can be carried out make it become gaseous state by the liquified natural gas lower to temperature, after engine cooling antifreeze liquid liquid towards heated by natural gas in vaporizer 3, temperature reduces, be connected to heating engines return pipe 19 from vaporizer water outlet 6 and get back to engine radiating water tank.Vaporization after rock gas due to air pressure higher, knock out drum 4 need be connected to and carry out buffering decompression, rock gas after decompression is connected to low pressure filter cleaner 8 by tee union 7, the other end of tee union is connected to the reduction valve-high-pressure solenoid valve integrated 15 in CNG fuels and energy air supply system, reduction valve-high-pressure solenoid valve integrated 15 is one-way valve and now closed condition, and rock gas adverse current can not occur.The rock gas filtered through low pressure filter cleaner 8 is purer, enters engine agitator 10, provide power for engine combustion after the rock gas that voltage regulating and stabilizing device 9 is adjusted to 0.5 MPa.
When winter or the LNG gas cylinder internal air pressure deficiency of cold, need to start from pressure piping, this time-control apparatus controls supercharging liquid outlet 1-2 and opens, the gaseous state LNG of to be top the be post liquefaction of the rock gas storage state in LNG gas cylinder 1, bottom is liquid LNG, when in LNG gas cylinder, air pressure is too low, need to carry out from supercharging LNG gas cylinder 1, namely the valve of supercharging liquid outlet 1-2 is turned on, liquid LNG is through supercharging liquid outlet 1-2, supercharging liquid entering hole 2-1 enters pressure charging valve 2, enter vaporizer 3 again, liquid LNG becomes gaseous state, pressure increases, then from supercharging air outlet 3-2, supercharging gas returning port 1-3 enters in LNG gas cylinder 1, be used for improving LNG gas cylinder 1 internal pressure, be convenient to liquid LNG flow out from liquid outlet 1-1, for engine combustion after a series of change.This circuits be LNG system from pressure piping, be independent pipeline, pressure charging valve 2 plays supercharging pressure stabilization function in this pipeline, ensures that the air pressure in pressure piping is steady.For ensureing that liquified natural gas vaporization efficency is the highest, vaporizer thermal medium entrance 5 designs in distance vaporizer first liquid entering hole 3-1 and the nearest position of pressure charging valve 2, ensures that liquified natural gas is heat vaporized in the shortest time.
During CNG fuels and energy air supply system air feed, control gear is by the described liquid outlet 1-1 of control LNG gas cylinder 1, and supercharging liquid outlet 1-2 closes, and opens bottle-jack valve 12 and the reduction valve-high-pressure solenoid valve integrated switch 23 of CNG gas cylinder 11.The compressed natural gas of CNG gas cylinder 11 is by bottle-jack valve 12, gas charging valve 13 arrives high pressure filter 14, high-pressure natural gas is purer after filtering, then reduce pressure through reduction valve-high-pressure solenoid valve integrated 15, heating, because compressed natural gas pressure-reducing gas needs heat, therefore engine cooling antifreeze liquid about 70 DEG C about-90 DEG C is needed to provide heat equally, integrated reduction valve, high-pressure solenoid valve 15 to be connected with heating engines intake pipe 18 by intake pipe 16 to be introduced engine coolant about 70 DEG C about-90 DEG C and to be flowed out by return pipe 17 and heating engines return pipe 19, thus complete the demand of heat absorption when pressurized air is reduced pressure, low pressure filter cleaner 8 is connected to by tee union 7 equally through post-decompression rock gas, engine agitator 10 is entered again after the rock gas that voltage regulating and stabilizing device 9 is adjusted to 0.5 MPa, power is provided for engine combustion.
Two cover air supply systems of the present invention both can separate work, again can collaborative work, and the supply air line of use after low pressure filter cleaner 8 is identical, has both decreased the quantity of air feed component, and has saved integral vehicle cost again, and killed two birds with one stone.Before low pressure filter cleaner 8, the characteristic exclusive according to LNG and CNG is reacted through series of physical, is finally transformed into the fuel that directly can be utilized by motor, simple to operate, Economy is high.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (18)
1. a LNG-CNG double fuel power air supply system, is characterized in that: comprise
LNG fuels and energy air supply system;
CNG fuels and energy air supply system;
Integrated device, is arranged on LNG fuels and energy air supply system, between CNG fuels and energy air supply system and motor, described LNG fuels and energy air supply system, CNG fuels and energy air supply system is all communicated with described motor;
Control gear, control described LNG fuels and energy air supply system, CNG fuels and energy air supply system one of them to described integrated device air feed.
2. LNG-CNG double fuel power air supply system according to claim 1, it is characterized in that: described integrated device comprises the main tracheae be communicated with described motor, and by first point of bronchus of described main tracheae branch and second point of bronchus, wherein said first point of bronchus is communicated with the final air outlet of described LNG fuels and energy air supply system, and described second point of bronchus is communicated with the final air outlet of described CNG fuels and energy air supply system.
3. LNG-CNG double fuel power air supply system according to claim 2, is characterized in that: described main tracheae is provided with low pressure filter cleaner (8).
4. the LNG-CNG double fuel power air supply system according to any one of claim 1-3, it is characterized in that: described CNG fuels and energy air supply system comprises CNG gas cylinder (11), the bottle mouth position being arranged on described CNG gas cylinder (11) controls the bottle-jack valve (12) that described bottleneck opens or closes, the gas charging valve to gas injection in bottle (13) be communicated with described bottleneck by pipeline, and to be communicated with described gas charging valve (13) by pipeline, to the decompressor of compressed natural gas pressure-reducing gas, the air outlet of described decompressor is communicated with described integrated device.
5. LNG-CNG double fuel power air supply system according to claim 4, it is characterized in that: described decompressor is reduction valve-high-pressure solenoid valve integrated (15), described reduction valve-high-pressure solenoid valve integrated (15) comprises the high-pressure solenoid valve controlling compressed natural gas break-make and the integrated reduction valve reduced pressure to compressed natural gas, described integrated reduction valve enters the thermal medium entrance of managing (16) and being communicated with thermal medium, and the thermal medium outlet be communicated with thermal medium reflow pipe (17).
6. LNG-CNG double fuel power air supply system according to claim 5, it is characterized in that: described thermal medium enters pipe (16) and is communicated with heating engines intake pipe (18), described thermal medium reflow pipe (17) is communicated with heating engines return pipe (19).
7. LNG-CNG double fuel power air supply system according to claim 4, is characterized in that: be also connected with high pressure filter (14) by pipeline between described gas charging valve (13) and described decompressor.
8. LNG-CNG double fuel power air supply system according to claim 1, is characterized in that: also comprise safety cover, and described CNG fuels and energy air supply system is arranged in described safety cover.
9. the LNG-CNG double fuel power air supply system according to claim 1-3, it is characterized in that: described LNG fuels and energy air supply system comprises LNG gas cylinder (1), by the vaporizer (3) of liquefied natural gas gasifying, and the knock out drum (4) to the rock gas gas decompression out of the air outlet from vaporizer (3), wherein the gas cylinder liquid outlet (1-1) of LNG gas cylinder (1) and vaporizer first liquid entering hole (3-1) of described vaporizer (3) pass through pipeline connection, the air outlet of described vaporizer (3) is communicated with the suction port of described knock out drum (4), the air outlet of described knock out drum (4) is communicated with described integrated device.
10. LNG-CNG double fuel power air supply system according to claim 9, it is characterized in that: described LNG fuels and energy air supply system also comprises LNG from pressure piping, described LNG refluxes in described LNG gas cylinder (1) will come from the liquified natural gas supercharging vaporization in described LNG gas cylinder (1) from pressure piping after.
11. LNG-CNG double fuel power air supply systems according to claim 10, it is characterized in that: described LNG comprises pressure charging valve (2) from pressure piping, the supercharging liquid outlet (1-2) of wherein said LNG gas cylinder (1) is communicated with the supercharging liquid entering hole (2-1) of described pressure charging valve (2), the liquid outlet of described pressure charging valve (2) is communicated with vaporizer second liquid entering hole (3-3) of described vaporizer (3), the supercharging air outlet (3-2) of described vaporizer (3) is communicated with by the supercharging gas returning port (1-3) of pipeline with described LNG gas cylinder (1).
12. LNG-CNG double fuel power air supply systems according to claim 11, it is characterized in that: the vaporizer thermal medium entrance (5) of described vaporizer (3) is communicated with heating engines intake pipe (18) by pipeline, and vaporizer thermal medium outlet (6) is communicated with heating engines return pipe (19).
13. LNG-CNG double fuel power air supply systems according to claim 11, is characterized in that: described vaporizer (3) water intake is arranged near described pressure charging valve (2).
14. LNG-CNG double fuel power air supply systems according to claim 5 or 6, it is characterized in that: described control gear is by controlling the described bottle-jack valve (12) of described CNG gas cylinder (11), and described high-pressure solenoid valve control CNG fuels and energy air supply system is ventilated in described integrated device.
15. LNG-CNG double fuel power air supply systems according to any one of claim 11-13, is characterized in that: described control gear by controlling the described gas cylinder liquid outlet (1-1) of described LNG gas cylinder (1), described supercharging liquid outlet (1-2) controls described LNG fuels and energy air supply system and ventilates in described integrated device.
16. 1 kinds of gas-fueled vehicles, comprise vehicle frame, motor, it is characterized in that: have the LNG-CNG double fuel power air supply system according to any one of claim 1-15, the integrated device of described LNG-CNG double fuel power air supply system is communicated with the mixer (10) of described motor by voltage regulating and stabilizing device (9).
17. gas-fueled vehicles according to claim 16, it is characterized in that: described CNG gas cylinder (11) is connected to the side of described vehicle frame by CNG gas cylinder bracket (22a) and drawstring (22b), described LNG gas cylinder (1) and the opposite side being connected to described vehicle frame by LNG gas cylinder bracket (20a) and drawstring (20b).
18. gas-fueled vehicles according to claim 17, it is characterized in that: described CNG gas cylinder (11) is arranged on the described vent systems side of described vehicle frame, described vehicle frame is provided with the transition connecting plate making described CNG gas cylinder (11) and described vent systems keep safety clearance, and described CNG gas cylinder (11) is arranged in described transition connecting plate (21).
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