CN114251198A - Natural gas automobile gas supply system based on natural gas hydrate slurry - Google Patents
Natural gas automobile gas supply system based on natural gas hydrate slurry Download PDFInfo
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- CN114251198A CN114251198A CN202111562906.9A CN202111562906A CN114251198A CN 114251198 A CN114251198 A CN 114251198A CN 202111562906 A CN202111562906 A CN 202111562906A CN 114251198 A CN114251198 A CN 114251198A
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- natural gas
- hydrate slurry
- hydrate
- supply system
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 180
- 239000002002 slurry Substances 0.000 title claims abstract description 105
- 239000003345 natural gas Substances 0.000 title claims abstract description 87
- 239000007789 gas Substances 0.000 title claims abstract description 53
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000008239 natural water Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000000354 decomposition reaction Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003949 liquefied natural gas Substances 0.000 abstract description 8
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 22
- 239000002245 particle Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- -1 composed of methane Chemical compound 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/108—Production of gas hydrates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0293—Safety devices; Fail-safe measures
-
- 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
- Y02T10/12—Improving ICE efficiencies
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention belongs to the technical field of clean energy automobiles, and particularly relates to a natural gas automobile gas supply system based on natural gas hydrate slurry, which comprises a hydrate slurry system and a natural gas supply system which are sequentially connected, wherein the hydrate slurry system is used for storing the hydrate slurry at normal pressure and low temperature and decomposing the hydrate slurry to generate natural gas and water by heating, and the natural gas supply system is used for conveying the natural gas generated by decomposing the hydrate slurry, and finally mixing the natural gas with air and conveying the natural gas to an engine; the invention utilizes the hydrate slurry system to generate natural gas and water, the generated natural gas enters the natural gas supply system and is mixed with air to form a certain proportion and then is conveyed into the engine, thereby providing fuel for a natural gas automobile, the natural gas hydrate can be stably stored for a long time under the conditions of normal pressure, heat insulation and-18 to-15 ℃, and the invention is safer than compressed natural gas and liquid natural gas and has lower storage cost.
Description
Technical Field
The invention belongs to the technical field of clean energy automobiles, and particularly relates to a natural gas automobile gas supply system based on natural gas hydrate slurry.
Background
Natural gas vehicles are vehicles powered by natural gas, and at present, there are two types of Compressed Natural Gas (CNG) vehicles and Liquefied Natural Gas (LNG) vehicles. CNG vehicles are vehicles which use natural gas, mainly composed of methane, stored in vehicle-mounted steel cylinders under a pressure of about 25MPa as a fuel for vehicles, and the high-pressure gas in the steel cylinders is decompressed by a decompressor and then supplied to an engine through a gas mixture. The CNG automobile has the advantages of stable combustion, less carbon deposition and convenient cold and hot start, but the automobile has short continuous driving mileage due to overweight, large volume and small gas storage amount of the high-pressure steel cylinder, and has certain danger due to high storage pressure of the steel cylinder. The LNG automobile cools the gaseous natural gas under normal pressure to-162 ℃ to condense the gaseous natural gas into liquid, can greatly save storage and transportation space after the natural gas is liquefied, and has the characteristics of large heat value, high performance and the like, but the natural gas has high liquefaction critical pressure, low critical temperature, high liquefaction cost and great technical difficulty.
Natural Gas Hydrate (NGH) is a cage-type crystalline substance formed by small-molecule hydrocarbons (mainly methane) and water molecules under low-temperature and high-pressure conditions by means of van der waals' force. NGH has extremely strong gas storage and carrying capacity, theoretically 1m3Saturated NGH can be released at about 164m3Standard state methane gas. NGH can be stably stored for a long time under the conditions of normal pressure, heat insulation and-18 to-15 ℃, is safer than CNG and LNG, and has lower storage cost. Therefore, the natural gas generated by decomposing the natural gas hydrate is utilized to provide fuel for the automobile, the natural gas is a necessary choice for promoting the advance of the hydrate technology, and the field of clean energy automobiles is also widened.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problems that a high-pressure steel cylinder of a compressed natural gas automobile in the prior art is overweight, large in size, small in gas storage amount and high in danger, a liquefied natural gas automobile is high in liquefaction critical pressure, low in critical temperature, high in liquefaction cost and high in technical difficulty, a natural gas automobile gas supply system based on natural gas hydrate slurry is provided.
In order to solve the technical problems, the invention adopts the following technical scheme: a natural gas automobile gas supply system based on natural gas hydrate slurry comprises a hydrate slurry system and a natural gas supply system which are sequentially connected;
the hydrate slurry system is used for storing the hydrate slurry at normal pressure and low temperature and decomposing the hydrate slurry to generate natural gas and water by heating;
the natural gas supply system is used for conveying natural gas generated by decomposing the hydrate slurry, and the natural gas is finally mixed with air to form a certain proportion and then conveyed into the engine.
According to the technical scheme, the hydrate slurry system is used for storing the hydrate slurry at normal pressure and low temperature, the hydrate slurry is heated and decomposed to generate natural gas and water, the generated natural gas enters the natural gas supply system and is mixed with air to form a certain proportion and then is conveyed into the engine, so that fuel is provided for the natural gas automobile, the natural gas hydrate can be stably stored for a long time under the conditions of normal pressure, heat insulation and-18-15 ℃, and the storage cost is lower than that of compressed natural gas and liquid natural gas.
Further, the natural gas supply system comprises a coarse filter, a buffer tank, a gas amount display, a gas transmission pump, a mixer, an air filter and an engine which are connected in sequence, the mixer is also communicated with the air filter, the coarse filter can filter micro particles in gas to ensure that each device of a downstream pipeline can work normally, the buffer tank is used for storing a certain amount of natural gas, a pressure gauge is installed on the buffer tank and used for monitoring the pressure of the natural gas in the tank, the gas transmission pump transmits the natural gas into the mixer through a gas supply pipeline and transmits the natural gas into the engine after forming a certain proportion with the air, the air filter purifies the air, dust, sand grains and various impurities are reduced to enter an engine cylinder for combustion, so that the abrasion of the engine is reduced, the natural gas generated by hydrate slurry decomposition sequentially enters the mixer after passing through the coarse filter, the buffer tank, the gas amount display and the gas transmission pump, the air also enters the mixer after passing through the air filter, and the natural gas and the air are mixed to form a certain proportion and then enter the engine.
Further, the hydrate slurry system comprises a hydrate slurry storage tank, a refrigeration system and a hydrate slurry decomposition tank;
the hydrate slurry storage tank is connected with the hydrate slurry decomposition tank through a hydrate slurry pipeline, an electromagnetic valve is arranged on the hydrate slurry pipeline, the electromagnetic valve is opened, the hydrate slurry enters the decomposition tank from the storage tank through a pipeline, and the delivery of the slurry is stopped when the electromagnetic valve is closed; the refrigerating system comprises a compressor, a condenser, a drying filter, a capillary tube and an evaporator which are sequentially connected, wherein an outlet of the evaporator is connected with an inlet of the compressor, the evaporator is positioned in the hydrate slurry storage tank, the evaporator comprises a heat preservation layer and a copper tube, the compressor compresses a gaseous fluorine-free environment-friendly refrigerant into high-temperature high-pressure superheated steam, the superheated steam enters the condenser, the heat is dissipated to the ambient air, the superheated steam enters the capillary tube through the drying filter for throttling and pressure reduction, then enters the evaporator, the refrigerant absorbs a large amount of heat in the hydrate slurry storage tank to be vaporized, and finally is absorbed back by the compressor, so that the refrigerating effect is achieved, the temperature can be maintained at-18 ℃ to-15 ℃, and the hydrate slurry is ensured to be stably stored for a long time.
The hydrate slurry storage tank is provided with a temperature sensor and a pressure sensor, so that the temperature and the pressure in the hydrate slurry storage tank can be monitored in real time, and the situation that a large amount of hydrate slurry is melted and decomposed is avoided; the heater is arranged in the hydrate slurry decomposition tank, the temperature in the tank is raised to decompose the hydrate slurry to generate natural gas and water, and the natural gas enters the coarse filter through the gas outlet of the hydrate slurry decomposition tank.
Furthermore, a circulating water pipeline for cooling the engine is arranged between a water outlet of the hydrate slurry decomposition tank and the engine, water generated by decomposition of the hydrate slurry cools the engine through the circulating water pipeline, and is circularly conveyed back to the hydrate slurry decomposition tank after absorbing heat, and the heat is transferred to the hydrate slurry to be decomposed, so that a self-circulation decomposition system is formed.
Furthermore, the inner wall of the hydrate slurry pipeline is attached with a hydrophobic coating, the coating is of a membrane structure, the structure is a hydrophobic compound surface, and the surface can increase the contact angle between hydrate particles and the inner wall of the pipeline, so that the resistance required when the hydrate particles are adhered to the inner wall of the pipeline is increased, the adhesion force between the hydrate particles and the inner wall is reduced, the adhesion force between the hydrate particles is further reduced, and the pipeline blockage caused by the adhesion of the hydrate particles can be finally prevented.
Furthermore, a three-way plug valve is arranged on the circulating water pipeline, and redundant water in the pipeline can be discharged.
Further, the heater is a PTC liquid heater, the adaptive heating temperature is 0-300 ℃, and the heater comprises a PTC ceramic body and a metal shell.
Further, the natural gas supply system still includes automobile-used gas alarm and the control unit, but automobile-used gas alarm real-time detection vehicle gas supply system, if reveal concentration and reach when setting value 0.5% ~ 1%, the alarm will send alarm signal in time, warn the driver and take emergency measures, avoid the emergence of accident, the control unit with heater, engine, automobile-used gas alarm, manometer, gas transmission pump, solenoid valve are the electricity and connect.
The invention has the beneficial effects that: the hydrate slurry system is used for storing the hydrate slurry at normal pressure and low temperature, the hydrate slurry is heated and decomposed to generate natural gas and water, the generated natural gas enters the natural gas supply system and is mixed with air to form a certain proportion and then is conveyed into the engine, so that fuel is provided for a natural gas automobile, the natural gas hydrate can be stably stored for a long time under the conditions of normal pressure, heat insulation and-18 to-15 ℃, and the storage cost is lower than that of compressed natural gas and liquid natural gas.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a hydrate slurry system;
FIG. 3 is a schematic diagram of a natural gas supply system;
in the figure:
1. a hydrate slurry system; 101. a hydrate slurry storage tank; 102. a compressor; 103. a condenser; 104. drying the filter; 105. a capillary tube; 106. an evaporator; 107. a hydrate slurry decomposition tank; 108. a heater; 109. a temperature sensor; 110. a pressure sensor; 111. a hydrate slurry pipeline; 112. an electromagnetic valve;
2. a natural gas supply system; 201. a coarse filter; 202. a buffer tank; 203. a gas amount display; 204. an air delivery pump; 205. a mixer; 206. an air cleaner; 207. an engine; 208. a pressure gauge; 209. a gas alarm for a vehicle; 210. a control unit;
3. a circulating water line;
4. a three-way plug valve;
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention, and directions and references (e.g., upper, lower, left, right, etc.) may be used only to help the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1-3, the invention is a natural gas vehicle gas supply system based on natural gas hydrate slurry, which comprises a hydrate slurry system 1 and a natural gas supply system 2 which are connected in sequence;
the hydrate slurry system 1 is used for storing hydrate slurry at normal pressure and low temperature, and decomposing the hydrate slurry to generate natural gas and water by heating;
the natural gas supply system 2 is used for conveying natural gas generated by decomposing the hydrate slurry, and finally mixing the natural gas with air to form a certain proportion and conveying the mixture into the engine 207.
Further, the natural gas supply system 2 includes a strainer 201, a buffer tank 202, an air volume display 203, a gas transmission pump 204, a mixer 205, an air filter 206 and an engine 207, which are connected in sequence, and the mixer 205 is further communicated with the air filter 206, the strainer 201 can filter micro particles in the gas to ensure that each device in a downstream pipeline can work normally, the buffer tank 202 is used for storing a certain amount of natural gas, a pressure gauge 208 is installed on the buffer tank 202 and is used for monitoring the pressure of the natural gas in the tank, the gas transmission pump 204 transmits the natural gas into the mixer 205 through a gas supply pipeline, and transmits the natural gas into the engine 207 after forming a certain proportion with the air, and the air filter 206 purifies the air to reduce the abrasion of the engine 207 due to the fact that dust, sand grains and various impurities enter the cylinder of the engine 207 to burn.
Further, the hydrate slurry system 1 comprises a hydrate slurry storage tank 101, a refrigeration system and a hydrate slurry decomposition tank 107;
the hydrate slurry storage tank 101 and the hydrate slurry decomposition tank 107 are connected through a hydrate slurry pipeline 111, the hydrate slurry pipeline 111 is provided with an electromagnetic valve 112, the refrigeration system comprises a compressor 102, a condenser 103, a drying filter 104, a capillary tube 105 and an evaporator 106 which are sequentially connected, the outlet of the evaporator 106 is connected with the inlet of the compressor 102, the evaporator 106 is positioned in the hydrate slurry storage tank 101, the evaporator 106 comprises an insulating layer and a copper tube, the compressor 102 compresses gaseous fluorine-free environment-friendly refrigerant into high-temperature high-pressure superheated vapor, the high-temperature high-pressure superheated vapor enters the condenser 103, the heat is dissipated to the surrounding air, then the superheated vapor enters the capillary tube 105 through the drying filter 104 for throttling and pressure reduction, then enters the evaporator 106, the refrigerant absorbs a large amount of heat in the hydrate slurry storage tank 101 to be vaporized, and finally the heat is absorbed by the compressor 102, the effect of refrigeration is achieved, the temperature can be maintained between 18 ℃ below zero and 15 ℃ below zero, and the long-time stable storage of the hydrate slurry is ensured.
The hydrate slurry storage tank 101 is provided with a temperature sensor 109 and a pressure sensor 110, so that the temperature and the pressure in the hydrate slurry storage tank 101 are monitored in real time, and the situation that a large amount of hydrate slurry is melted and decomposed is avoided; the hydrate slurry decomposition tank 107 is internally provided with a heater 108, the temperature in the tank is raised to decompose the hydrate slurry to generate natural gas and water, and the natural gas enters the coarse filter 201 through the gas outlet of the hydrate slurry decomposition tank 107.
Furthermore, a circulating water pipeline 3 for cooling the engine 207 is arranged between the water outlet of the hydrate slurry decomposition tank 107 and the engine 207, water generated by hydrate slurry decomposition cools the engine 207 through the circulating water pipeline 3, and is circularly conveyed back to the hydrate slurry decomposition tank 107 after absorbing heat, and the heat is transferred to the hydrate slurry to be decomposed, so that a self-circulation decomposition system is formed.
Furthermore, the inner wall of the hydrate slurry pipeline 111 is attached with a hydrophobic coating, the coating is a layer of film structure, the structure is a layer of hydrophobic compound surface, and the surface can increase the contact angle between the hydrate particles and the inner wall of the pipeline, so that the resistance required when the hydrate particles are adhered to the inner wall of the pipeline is increased, the adhesion force between the hydrate particles and the inner wall is reduced, the adhesion force between the hydrate particles is further reduced, and the pipeline blockage caused by the adhesion of the hydrate particles can be prevented finally.
Furthermore, a three-way plug valve 4 is arranged on the circulating water pipeline 3, and redundant water in the pipeline can be discharged.
Further, the heater 108 is a PTC liquid heater 108, the adaptive heating temperature is 0 ℃ to 300 ℃, and the heater 108 includes a PTC ceramic body and a metal shell.
Further, the natural gas supply system 2 further comprises an automobile gas alarm 209 and a control unit 210, the automobile gas alarm 209 can detect the automobile gas supply system in real time, if the leakage concentration reaches a set value of 0.5% -1%, the alarm will send out an alarm signal in time to warn a driver to take emergency measures, so as to avoid accidents, and the control unit 210 is electrically connected with the heater 108, the engine 207, the automobile gas alarm 209, the pressure gauge 208, the gas transmission pump 204 and the electromagnetic valve 112.
The working principle and the using process of the invention are as follows:
the hydrate slurry storage tank 101 stores hydrate slurry by absorbing heat through the evaporator 106 to keep the internal temperature thereof in a low-temperature state, when the engine 207 starts to work, the control unit 210 controls the electromagnetic valve 112 to be opened, the hydrate slurry enters the hydrate slurry decomposition tank 107 from the hydrate slurry storage tank 101, the heater 108 is opened to heat and decompose the hydrate slurry to generate natural gas and water, the natural gas passes through the coarse filter 201, the buffer tank 202, the gas quantity display 203 and the gas transmission pump 204 in sequence, the natural gas and the air are mixed in the mixer 205 to form a certain proportion and then are transmitted to the engine 207, the water generated by decomposition is cooled for the engine 207 through the circulating water pipeline 3, the water is circularly transmitted to the hydrate slurry decomposition tank 107 after absorbing heat, and the heat is transmitted to the hydrate slurry to be decomposed, so that a self-circulation decomposition system is formed; when the engine 207 stops operating, the control unit 210 controls the electromagnetic valve 112 to close, and the hydrate slurry stops being conveyed.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides a natural gas car gas supply system based on natural gas hydrate thick liquid which characterized in that: comprises a hydrate slurry system (1) and a natural gas supply system (2) which are connected in sequence;
the hydrate slurry system (1) is used for storing the hydrate slurry at normal pressure and low temperature and decomposing the hydrate slurry to generate natural gas and water by heating;
the natural gas supply system (2) is used for conveying natural gas generated by decomposing the hydrate slurry, and finally conveying the natural gas mixed with air into the engine (207).
2. A natural gas vehicle gas supply system based on a natural gas hydrate slurry as claimed in claim 1, wherein: natural gas air supply system (2) including colander (201), buffer tank (202), tolerance display (203), gas transmission pump (204), blender (205), air cleaner (206) and engine (207) that connect gradually, and blender (205) still intercommunication has air cleaner (206), install manometer (208) on buffer tank (202).
3. A natural gas vehicle gas supply system based on a natural gas hydrate slurry as claimed in claim 2, wherein: the hydrate slurry system (1) comprises a hydrate slurry storage tank (101), a refrigeration system and a hydrate slurry decomposition tank (107);
connect through hydrate thick liquid pipeline (111) between hydrate thick liquid storage tank (101) and the hydrate thick liquid decomposition tank (107), be equipped with solenoid valve (112) on hydrate thick liquid pipeline (111), refrigerating system is including compressor (102), condenser (103), drying filter (104), capillary (105) and evaporimeter (106) that connect gradually, and the export of evaporimeter (106) and the entry linkage of compressor (102), evaporimeter (106) are located in hydrate thick liquid storage tank (101), be equipped with temperature sensor (109) and pressure sensor (110) on hydrate thick liquid storage tank (101), hydrate thick liquid decomposition tank (107) inside is equipped with heater (108), hydrate thick liquid decomposition tank (107) gas outlet with the entry intercommunication of strainer (201).
4. A natural gas vehicle gas supply system based on a natural gas hydrate slurry as claimed in claim 3, wherein: and a circulating water pipeline (3) for cooling the engine (207) is connected between the water outlet of the hydrate slurry decomposition tank (107) and the engine (207).
5. A natural gas vehicle gas supply system based on a natural gas hydrate slurry as claimed in claim 3, wherein: the inner wall of the hydrate slurry pipeline (111) is attached with a hydrophobic coating.
6. The natural gas automobile gas supply system based on natural gas hydrate slurry according to claim 4, characterized in that: and a three-way plug valve (4) is arranged on the circulating water pipeline (3).
7. A natural gas vehicle gas supply system based on a natural gas hydrate slurry as claimed in claim 3, wherein: the heater (108) is a PTC liquid heater (108).
8. A natural gas vehicle gas supply system based on a natural gas hydrate slurry as claimed in claim 3, wherein: the natural gas supply system (2) further comprises an automobile gas alarm (209) and a control unit (210), wherein the control unit (210) is electrically connected with the heater (108), the engine (207), the automobile gas alarm (209), the pressure gauge (208), the gas transmission pump (204) and the electromagnetic valve (112).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111562906.9A CN114251198A (en) | 2021-12-20 | 2021-12-20 | Natural gas automobile gas supply system based on natural gas hydrate slurry |
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|---|---|---|---|
| CN202111562906.9A CN114251198A (en) | 2021-12-20 | 2021-12-20 | Natural gas automobile gas supply system based on natural gas hydrate slurry |
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Citations (5)
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|---|---|---|---|---|
| JP2000248996A (en) * | 1999-02-24 | 2000-09-12 | Osaka Gas Co Ltd | Gas motor vehicle |
| JP2007203813A (en) * | 2006-01-31 | 2007-08-16 | Chugoku Electric Power Co Inc:The | Water discharge mechanism and automobile equipped therewith |
| KR20100065610A (en) * | 2008-12-08 | 2010-06-17 | 한국생산기술연구원 | Fuel supply system for natural gas hydrate |
| CN106224130A (en) * | 2016-10-08 | 2016-12-14 | 河南柴油机重工有限责任公司 | A kind of V-type integration natural gas compressor auxiliary fuel supply-system and method |
| CN113557197A (en) * | 2019-06-14 | 2021-10-26 | 韩国海洋科学技术院 | System for supplying fuel, replacing ballast water and supplying clean water in minimum ballast water ship by using natural gas hydrate |
-
2021
- 2021-12-20 CN CN202111562906.9A patent/CN114251198A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000248996A (en) * | 1999-02-24 | 2000-09-12 | Osaka Gas Co Ltd | Gas motor vehicle |
| JP2007203813A (en) * | 2006-01-31 | 2007-08-16 | Chugoku Electric Power Co Inc:The | Water discharge mechanism and automobile equipped therewith |
| KR20100065610A (en) * | 2008-12-08 | 2010-06-17 | 한국생산기술연구원 | Fuel supply system for natural gas hydrate |
| CN106224130A (en) * | 2016-10-08 | 2016-12-14 | 河南柴油机重工有限责任公司 | A kind of V-type integration natural gas compressor auxiliary fuel supply-system and method |
| CN113557197A (en) * | 2019-06-14 | 2021-10-26 | 韩国海洋科学技术院 | System for supplying fuel, replacing ballast water and supplying clean water in minimum ballast water ship by using natural gas hydrate |
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