CN113339691B - Hydrogen transportation detection method and hydrogen transportation management system applying same - Google Patents

Hydrogen transportation detection method and hydrogen transportation management system applying same Download PDF

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Publication number
CN113339691B
CN113339691B CN202110630575.1A CN202110630575A CN113339691B CN 113339691 B CN113339691 B CN 113339691B CN 202110630575 A CN202110630575 A CN 202110630575A CN 113339691 B CN113339691 B CN 113339691B
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hydrogen
liquid
transportation
storage container
processing unit
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CN113339691A (en
Inventor
王娟
林翎
夏玉娟
鲍威
赵嘉瑶
张邦强
陈晓露
王德新
刘小敏
杨燕梅
刘猛
杨海波
王志远
陈志斌
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Foshan Green Development And Innovation Research Institute
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Foshan Green Development And Innovation Research Institute
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F17C13/083—Mounting arrangements for vessels for medium-sized mobile storage vessels, e.g. tank vehicles or railway tank vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
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    • F17C2205/0107—Frames
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    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
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    • F17C2205/0123—Mounting arrangements characterised by number of vessels
    • F17C2205/0126—One vessel
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    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/01—Mounting arrangements
    • F17C2205/0153—Details of mounting arrangements
    • F17C2205/0157—Details of mounting arrangements for transport
    • F17C2205/0161—Details of mounting arrangements for transport with wheels
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    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
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    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
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    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0192—Propulsion of the fluid by using a working fluid
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    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
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    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0369—Localisation of heat exchange in or on a vessel
    • F17C2227/0372—Localisation of heat exchange in or on a vessel in the gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/043—Methods for emptying or filling by pressure cascade
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    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
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    • F17C2260/00—Purposes of gas storage and gas handling
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    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/046—Enhancing energy recovery
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    • F17C2265/00—Effects achieved by gas storage or gas handling
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    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F17C2270/0178—Cars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0763—Fuel cells
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel Cell (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to the field of hydrogen quality detection, in particular to a hydrogen transportation detection method and a hydrogen transportation management system applying the same. The hydrogen transportation detection method comprises the following steps: a. detecting whether the pressure in the transportation tank is higher than a pressure threshold value; judging the electric quantity capacity of the storage battery; b. when the electric quantity of the storage battery is higher than the electric quantity threshold range, the gasified hydrogen enters a hydrogen liquefying system, and the obtained liquid hydrogen is stored in a liquid hydrogen storage container; when the electric quantity of the storage battery is lower than the electric quantity threshold range, the gasified hydrogen enters a hydrogen fuel cell, and the obtained electric energy is stored in the storage battery; c. repeating the steps a-b. According to the hydrogen transportation detection method, the gasification condition of the liquid hydrogen in the transportation tank is monitored in real time, and the gasified hydrogen is converted into the liquid hydrogen through liquefaction or combustion according to the driving working condition of the transportation vehicle to be recycled, so that the safety of liquid hydrogen transportation is ensured, and the energy can be utilized and recycled to the greatest extent in the liquid hydrogen transportation process.

Description

Hydrogen transportation detection method and hydrogen transportation management system applying same
Technical Field
The invention relates to the field of hydrogen quality detection, in particular to a hydrogen transportation detection method and a hydrogen transportation management system applying the same.
Background
With the continuous breakthrough of the hydrogen energy fuel cell technology, the hydrogen energy fuel cell vehicle has the characteristics of long energy continuing range and short filling time of the traditional fuel vehicle, has the advantage of zero carbon emission, and gradually becomes a large field of hydrogen energy application. The hydrogen used by the hydrogen energy fuel cell vehicle generally passes through the links of preparation, production, transportation, unloading, storage, filling and the like, and the application technology of each link can directly influence the quality and the application cost of the hydrogen.
In the prior art, as the safety of liquid hydrogen can not be ensured, the gaseous hydrogen tube bundle vehicle is mainly adopted for transportation. The volume energy density of the liquid hydrogen is 3 times of that of 35MPa hydrogen and 1.8 times of that of 70MPa hydrogen. If the low-cost use is adopted and a large-scale efficient liquefaction technology is adopted, the cost of hydrogen liquefaction is greatly reduced, and the advantage of the cost of liquid hydrogen storage and transportation is more obvious. At present, liquid hydrogen storage and transportation are becoming important research points, and the transportation cost of liquid hydrogen is reduced to about one eighth of that of high-pressure hydrogen in the countries of the United states, Germany, Japan and the like. Liquid hydrogen supply chain system development has been taken as a precondition for solving large-scale hydrogen energy utilization in japan, and large-scale hydrogen supply is mainly based on liquid hydrogen supply because liquid hydrogen has the advantages of high hydrogen carrying density, low transportation cost, high hydrogen storage purity, and better liquid low-pressure storage and use safety than large-scale high-pressure gaseous form.
However, the liquefaction temperature of hydrogen is very low, so that hydrogen can be liquefied after being cooled to a certain temperature, the hydrogen needs to be liquefied firstly in the liquid hydrogen transportation process, although a high-vacuum heat-insulation storage tank is adopted for storage and transportation in the transportation process, the liquid hydrogen still has part of continuously gasified in the transportation process because complete heat insulation cannot be achieved, the gasification amount of the liquid hydrogen is larger when the transportation storage amount is larger, the pressure in the storage tank is increased due to the gasified hydrogen, and the hydrogen has the characteristics of flammability and explosiveness, the common method is direct discharge and combustion, but a vehicle for transporting the liquid hydrogen is not suitable for discharge and combustion in the driving process, so in order to solve the gasification problem in the liquid hydrogen transportation process, the prior art either requires the transportation tank to reserve a gasification space and increase the compressive strength of a transportation pipe, or stops to a specified area for discharge or combustion, and the like; these solutions directly impact liquid hydrogen transport efficiency and cost; and the waste of hydrogen energy is caused by the combustion and the discharge of gasified hydrogen gas liquid.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a method for detecting hydrogen transportation, which can detect the gasification condition in the liquid hydrogen transportation process in real time, and recover or utilize the energy of the gasified hydrogen according to the detection result, thereby not only reducing the transportation efficiency of the liquid hydrogen, but also saving the transportation cost of the hydrogen, and ensuring the transportation safety.
Another objective of the present invention is to provide a hydrogen transportation management system using the above hydrogen transportation detection method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the hydrogen transportation detection method comprises the following steps:
a. the pressure detector detects whether the pressure in the transportation tank is higher than a pressure threshold value; if yes, conveying the gasified hydrogen in the transport tank to a reversing valve; and further judging the electric quantity capacity of the storage battery.
b. When the electric quantity of the storage battery is higher than the electric quantity threshold range, the reversing valve is switched to enable gasified hydrogen to enter the hydrogen liquefying system, and liquid hydrogen obtained through liquefying is stored in the liquid hydrogen storage container.
When the electric quantity of the storage battery is lower than the electric quantity threshold range, the reversing valve is switched to enable the gasified hydrogen to sequentially pass through the hydrogen heater and the hydrogen fuel cell, and finally obtained electric energy is stored in the storage battery.
c. Repeating the steps a-b.
Specifically, the step a comprises the following steps: a1. after the transport tank finishes the liquid hydrogen storage operation, setting a pressure threshold value of the transport tank in the transport process according to the capacity and the temperature of the liquid hydrogen stored in the transport tank; setting an electric quantity threshold value of the storage battery according to the automobile driving distance and the transportation environment; a2. the pressure detector detects the pressure value in the transportation tank in real time, and when the pressure value is higher than the pressure threshold value, the central processing unit further extracts the electric quantity capacity of the storage battery and compares the electric quantity capacity with the electric quantity threshold value range.
Specifically, the step b comprises the following steps: b1. when the battery capacity is higher than the electric quantity threshold range, the central processing unit sends an instruction to the reversing valve, so that the gasified hydrogen is input into the liquid hydrogen storage container; when the central processing unit detects that hydrogen enters the liquid hydrogen storage container, the storage battery supplies power to the helium compression refrigeration device, and the helium compression refrigeration device is started to liquefy the hydrogen in the liquid hydrogen storage container according to the inflow amount and the pressure condition of the hydrogen; b2. under the scene of the step b1, if the central processing unit detects that the helium compression refrigeration device is powered off and the liquefaction operation is stopped, and the concentration of the gasified hydrogen in the liquid hydrogen storage container is still too high, the central processing unit sends a control instruction to the liquid nitrogen container, liquid nitrogen is introduced into a heat exchange cavity of the liquid hydrogen storage container, the liquid nitrogen is used for cooling the hydrogen in the liquid hydrogen storage container, and pressure relief alarm information is sent out; b3. when the battery capacity is lower than the electric quantity threshold value range, the central processing unit sends an instruction to the reversing valve, so that the gasified hydrogen is input to a hydrogen heater arranged on the tractor, the hydrogen heater heats the gasified hydrogen, and after the hydrogen is heated to a set temperature, the gasified hydrogen in the hydrogen heater is input into a hydrogen fuel battery to be combusted, and the generated electric energy is stored in the storage battery. Preferably, the step a1 further includes the following steps: the central processing unit extracts navigation information and weather information in the navigation module, and then the electric quantity threshold range of the storage battery is comprehensively set by combining fuel consumption information of the transport vehicle.
Preferably, the following steps are further included between the step b and the step c: vehicle power switching step: when the central processing unit detects that the oil of the fuel oil driving device in the transport vehicle is lower than an oil threshold value and the liquid hydrogen container amount in the liquid hydrogen storage container is higher than a preset value, the central processing unit controls a one-way valve arranged at the bottom of the liquid hydrogen storage container, so that the liquid hydrogen at the bottom of the liquid hydrogen storage container is output to a hydrogen fuel cell to be converted into hydrogen and combusted for power generation; the transport vehicle is switched to be driven by the motor drive.
Preferably, the following steps are further included between the step b and the step c: vehicle power switching step: when the central processing unit detects that the fuel of the fuel driving device in the transport vehicle is about to be exhausted, the central processing unit controls the hydrogen filling tank to send a control instruction, so that the liquid hydrogen in the hydrogen filling tank is output to the hydrogen fuel cell to be converted into hydrogen and combusted for power generation; the transport vehicle is switched to be driven by the motor driving device; and when the central processing unit detects that the amount of the liquid hydrogen container in the hydrogen filling tank is lower than a preset value, sending driving warning information to a driver.
Preferably, the hydrogen transportation detection method further comprises the following steps: when the pressure value of the sub-pressure detector is higher than the corresponding preset limit pressure value, the central processing unit controls the one-way valve at the corresponding position, so that the liquid hydrogen in the liquid hydrogen storage container flows into the transportation tank, the reversing valve is switched to stop inputting hydrogen into the liquid hydrogen storage container, and pressure relief alarm information is sent out.
The hydrogen transportation management system comprises a transportation vehicle, wherein the transportation vehicle consists of a tractor providing driving force and a loading part used for loading liquid hydrogen, and the tractor is provided with an information transmission module, a central processing unit, a hydrogen heater, a hydrogen fuel cell, a storage battery, a motor driving device and a fuel oil driving device; the loading part is provided with a hydrogen pipeline, a transport tank, a reversing valve, a hydrogen liquefaction system and a liquid hydrogen storage container; a first pressure detector is arranged in the transportation tank; one end of the hydrogen conveying pipeline is communicated with the top of the conveying tank, and the other end of the hydrogen conveying pipeline is connected with the input end of the reversing valve; the output end of the reversing valve is connected with a first branch pipeline and a second branch pipeline in parallel; the first branch pipeline sequentially connects the hydrogen liquefaction system and the liquid hydrogen storage container in series; the second branch pipeline sequentially connects the hydrogen heater and the hydrogen fuel cell in series; the current output end of the hydrogen fuel cell is connected with the current input end of the storage battery, and the current output end of the storage battery is respectively connected with the hydrogen liquefaction system and the motor driving device in parallel; the current output end of the fuel oil driving device is connected with the current end input end of the storage battery; the information transmission module is electrically connected with the central processing unit and is used for realizing communication control among the pressure detection sensor, the reversing valve, the hydrogen liquefaction system, the liquid hydrogen storage container, the hydrogen heater, the hydrogen fuel cell, the storage battery, the motor driving device and the fuel oil driving device and the central processing unit.
Preferably, the hydrogen liquefaction system comprises a helium compression refrigeration device and a liquid nitrogen container; and both the liquid nitrogen stored in the liquid nitrogen container and the helium gas compression refrigerating device are used for refrigerating and liquefying hydrogen gas in the liquid hydrogen storage container.
Preferably, the output port at the top of the liquid hydrogen storage container is communicated with the top of the transportation tank and the hydrogen heater in a one-way parallel manner; the bottom output port of the liquid hydrogen storage container is communicated with the transportation tank in a one-way mode; the tractor is also provided with a hydrogen filling tank, the hydrogen filling tank is used for filling and storing hydrogen into the transport vehicle, and the output end of the hydrogen filling tank is communicated with the input end of the hydrogen fuel cell; be equipped with liquid level detector and sub-pressure detector in the liquid hydrogen storage container, sub-pressure detector is used for detecting hydrogen pressure in the liquid hydrogen storage container, liquid level detector is used for detecting the liquid hydrogen volume of depositing.
The embodiment of the invention has the following beneficial effects:
according to the hydrogen transportation detection method, the gasification condition of the liquid hydrogen in the transportation tank is monitored in real time by detecting the pressure change in the transportation tank, and the gasified hydrogen is converted into the liquid hydrogen through liquefaction or combustion according to the driving working condition of the transportation vehicle or is converted into electric energy for recycling, so that the safety of liquid hydrogen transportation is ensured, and the energy can be utilized and recycled to the greatest extent in the liquid hydrogen transportation process.
The transportation management system enables the transportation vehicle to have two modes of fuel oil driving and hydrogen energy source driving, wherein the hydrogen source driven by the hydrogen energy source can be filling liquid hydrogen in the prior art and can be hydrogen recycled in the liquid hydrogen transportation process; the transportation management system can further improve the endurance mileage of the transportation vehicle on the premise of ensuring the transportation safety of the liquid hydrogen, and greatly improves the transportation efficiency.
Drawings
FIG. 1 is a schematic flow diagram of a hydrogen transport detection method according to one embodiment of the present invention;
FIG. 2 is another schematic flow diagram of the hydrogen transport detection method in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the hydrogen transportation management system in one embodiment of the invention.
Wherein: an apparatus section 10, a transport tank 11, a pressure detector 111, a selector valve 12, a liquid hydrogen storage container 13, a helium gas compression refrigeration apparatus 14, a liquid nitrogen container 15,
the system comprises a tractor 20, a hydrogen heater 21, a hydrogen fuel cell 22, a storage battery 23, a motor driving device 24, a fuel oil driving device 25, a hydrogen filling container 26, a central processing unit 27, a navigation module 28 and an information transmission module 29.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In one embodiment of the present application, as shown in fig. 1 to 2, a hydrogen transportation detection method includes the following steps:
a. the pressure detector 111 detects whether the pressure in the transportation tank 11 is higher than a pressure threshold value; if yes, the gasified hydrogen in the transportation tank 11 is conveyed to a reversing valve 12; and further determines the charge capacity of the battery 23.
b. When the electric quantity of the storage battery 23 is higher than the electric quantity threshold range, the reversing valve 12 is switched to enable the gasified hydrogen gas to enter the hydrogen gas liquefaction system, and liquid hydrogen obtained by liquefaction is stored in the liquid hydrogen storage container 13.
When the electric quantity of the storage battery 23 is lower than the electric quantity threshold range, the reversing valve 12 is switched to enable the gasified hydrogen to pass through the hydrogen heater 21 and the hydrogen fuel cell 22 in sequence, and finally obtained electric energy is stored in the storage battery 23.
c. Repeating the steps a-b.
Specifically, the step a comprises the following steps:
a1. after the transportation tank 11 finishes the liquid hydrogen storage operation, setting a pressure threshold value of the transportation tank 11 in the transportation process according to the capacity and the temperature of the liquid hydrogen stored in the transportation tank 11; setting an electric quantity threshold value of the storage battery 23 according to the automobile driving distance and the transportation environment; a2. the pressure detector 111 detects the pressure value in the transportation tank 11 in real time, and when the pressure value is higher than the pressure threshold, the cpu 27 further extracts the capacity of the battery 23 and compares the capacity with the threshold range.
Specifically, the step b comprises the following steps:
b1. when the battery capacity is higher than the electric quantity threshold range, the central processing unit 27 sends an instruction to the reversing valve 12, so that the gasified hydrogen is input into the liquid hydrogen storage container 13; when the central processing unit 27 detects that hydrogen enters the liquid hydrogen storage container 13, the storage battery 23 is enabled to supply power to the helium gas compression and refrigeration device 14, and the helium gas compression and refrigeration device 14 is started to liquefy the hydrogen in the liquid hydrogen storage container 13 according to the inflow and pressure of the hydrogen; b2. under the scene of the step b1, if the central processing unit 27 detects that the helium compression refrigeration device 14 is powered off and stops liquefaction operation, and the concentration of the gasified hydrogen in the liquid hydrogen storage container 13 is still too high, the central processing unit 27 sends a control instruction to the liquid nitrogen container 15, feeds liquid nitrogen into a heat exchange cavity of the liquid hydrogen storage container 13, cools the hydrogen in the liquid hydrogen storage container by using the liquid nitrogen, and sends pressure relief alarm information; b3. when the battery capacity is lower than the electric quantity threshold range, the central processing unit 27 sends an instruction to the reversing valve 12, so that the gasified hydrogen is input to a hydrogen heater 21 arranged on the tractor 20, the hydrogen heater 21 heats the gasified hydrogen, and after the hydrogen is heated to a set temperature, the gasified hydrogen in the hydrogen heater 21 is input to a hydrogen fuel cell 22 for combustion, and the generated electric energy is stored in the storage battery 23. The hydrogen heater 21 has various working principles in the prior art, and can be used for heating hydrogen, the heat for heating can be generated by supplying power and heating by the storage battery 23, and the heat can also be generated by preheating by a driving device in the driving process of a transport vehicle and transmitted to the hydrogen heater 21 through the existing heat exchange structure to be applied so as to achieve the purpose of energy conservation.
Preferably, the step a1 further includes the following steps: the central processing unit 27 extracts the navigation information and the weather information in the navigation module 28, and then comprehensively sets the electric quantity threshold range of the storage battery 23 by combining the fuel consumption information of the transport vehicle. Can be so that battery 23's electric quantity can be according to the transportation needs more reasonable setting of haulage vehicle, guarantee in the transportation under the normal power consumption's of haulage vehicle prerequisite, can realize again to the operation of liquefying of 11 internal gasification hydrogen of transport tank.
A vehicle power switching step is further included between the step b and the step c, and the vehicle power switching step specifically comprises the following two implementation modes:
the first vehicle power switching step is: when the central processing unit 27 detects that the oil of the fuel driving device 25 in the transportation vehicle is lower than the oil threshold value and the liquid hydrogen container amount in the liquid hydrogen storage container 13 is higher than the preset value, the central processing unit 27 controls a check valve arranged at the bottom of the liquid hydrogen storage container 13, so that the liquid hydrogen at the bottom of the liquid hydrogen storage container 13 is output to the hydrogen fuel cell 22 to be converted into hydrogen and combusted for power generation; the transport vehicle is switched to be driven by the motor drive 24. The driving mode of the transport vehicle can be switched according to the oil and stored liquid hydrogen capacity, so that the transport vehicle can further increase the endurance mileage by utilizing the recycled gasified hydrogen compared with the existing hybrid driving motion vehicle, the transport capacity of the transport vehicle is obviously improved, the liquid hydrogen transport application range is wider, and the transport efficiency is higher.
The second vehicle power switching step is as follows: when the central processing unit 27 detects that the fuel of the fuel driving device 25 in the transport vehicle is about to be exhausted, the central processing unit 27 controls to send a control instruction to the hydrogen filling tank, so that the liquid hydrogen in the hydrogen filling tank is output to the hydrogen fuel cell 22 to be converted into hydrogen and combusted to generate electricity; the transport vehicle is switched to be driven by the motor driving device 24; when the central processor 27 detects that the amount of the liquid hydrogen container in the hydrogen gas filling tank is lower than a preset value, it sends a driving warning message to the driver. And the driving warning information is sent out in time, so that a driver can know the driving capability of the transport vehicle in time and adjust correspondingly to ensure the normal work of the transport vehicle.
Preferably, the hydrogen transportation detection method further comprises the following operation of container pressure relief: when the pressure value of the sub-pressure detector is higher than the corresponding preset limit pressure value, the central processing unit 27 controls the one-way valve at the corresponding position, so that the liquid hydrogen in the liquid hydrogen storage container 13 flows into the transportation tank 11, the reversing valve 12 is switched to stop inputting hydrogen into the liquid hydrogen storage container 13, and pressure relief alarm information is sent out. Hydrogen transportation management system can deal with the normal liquid hydrogen gasification condition completely under the normal transportation condition, but under the special circumstances, if hydrogen transportation management system appears and can't handle the liquid hydrogen gasification condition, can send pressure release alarm information to navigating mate, and navigating mate can in time carry out manual intervention and handle to can guarantee the security of hydrogen transportation.
As shown in fig. 3, the hydrogen transportation management system comprises a transportation vehicle, wherein the transportation vehicle is composed of a tractor 20 for providing driving force and a loading part 10 for loading liquid hydrogen, and the tractor 20 is provided with an information transmission module 29, a central processing unit, a hydrogen heater 21, a hydrogen fuel cell, a storage battery 23, a motor driving device 24 and a fuel driving device 25; the loading part 10 is provided with a hydrogen pipeline, a transport tank 11, a reversing valve 12, a hydrogen liquefaction system and a liquid hydrogen storage container 13; a first pressure detector 111 is arranged in the transportation tank 11; one end of the hydrogen transportation pipeline is communicated with the top of the transportation tank 11, and the other end of the hydrogen transportation pipeline is connected with the input end of the reversing valve 12; the output end of the reversing valve 12 is provided with a first branch pipeline and a second branch pipeline in parallel; the first branch pipeline sequentially connects the hydrogen liquefaction system and the liquid hydrogen storage container 13 in series; the second branch pipeline sequentially connects the hydrogen heater 21 and the hydrogen fuel cell in series; the current output end of the hydrogen fuel cell is connected with the current input end of the storage battery 23, and the current output end of the storage battery 23 is respectively connected with the hydrogen liquefaction system and the motor driving device 24 in parallel; the current output end of the fuel driving device 25 is connected with the current end input end of the storage battery 23; the information transmission module is electrically connected with the central processing unit 27, and the information transmission module 29 is used for realizing communication control between the pressure detection sensor, the reversing valve 12, the hydrogen liquefying system, the liquid hydrogen storage container 13, the hydrogen heater 21, the hydrogen fuel cell, the storage battery 23, the motor driving device 24, the fuel driving device 25 and the central processing unit 27.
Specifically, the hydrogen liquefaction system comprises a helium compression refrigeration device 14 and a liquid nitrogen container 15; the liquid nitrogen stored in the liquid nitrogen container 15 and the helium gas compression and refrigeration device 14 are both used for refrigerating and liquefying hydrogen gas in the liquid hydrogen storage container 13.
Preferably, the output port at the top of the liquid hydrogen storage container 13 is communicated with the top of the transportation tank 11 and the hydrogen heater 21 in a one-way parallel manner; the bottom output port of the liquid hydrogen storage container 13 is communicated with the transportation tank 11 in a one-way mode; the tractor 20 is further provided with a hydrogen filling tank, the hydrogen filling tank is used for filling and storing hydrogen into the transport vehicle, and the output end of the hydrogen filling tank is communicated with the input end of the hydrogen fuel cell; be equipped with liquid level detector and sub-pressure detector in the liquid hydrogen storage container 13, sub-pressure detector is used for detecting hydrogen pressure in the liquid hydrogen storage container 13, liquid level detector is used for detecting the liquid hydrogen volume of depositing.
It should be noted that the transportation tank 11, the pressure detector 111, the reversing valve 12, the liquid hydrogen storage container 13, the helium gas compression refrigeration device 14, the liquid nitrogen container 15, the hydrogen gas heater 21, the hydrogen fuel cell 22, the storage battery 23, the motor driving device 24, the fuel oil driving device 25, the hydrogen gas filling container 26, and the information transmission module 29 are all commercially available structural elements or devices.
According to the hydrogen transportation detection method, the gasification condition of the liquid hydrogen in the transportation tank 11 is monitored in real time by detecting the pressure change in the transportation tank 11, and the gasified hydrogen is converted into the liquid hydrogen through liquefaction or combustion according to the driving working condition of the transportation vehicle to be recycled, so that the safety of liquid hydrogen transportation is ensured, and the energy can be utilized and recycled to the greatest extent in the liquid hydrogen transportation process.
The transportation management system enables the transportation vehicle to have two modes of fuel oil driving and hydrogen energy source driving, wherein the hydrogen source driven by the hydrogen energy source can be filling liquid hydrogen in the prior art and can be hydrogen recycled in the liquid hydrogen transportation process; the transportation management system can further improve the endurance mileage of the transportation vehicle on the premise of ensuring the transportation safety of the liquid hydrogen, and greatly improves the transportation efficiency.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims (7)

1. The hydrogen transportation detection method is characterized by comprising the following steps:
a. the pressure detector detects whether the pressure in the transportation tank is higher than a pressure threshold value; if yes, conveying the gasified hydrogen in the transport tank to a reversing valve; further judging the electric quantity capacity of the storage battery;
b. when the electric quantity of the storage battery is higher than the electric quantity threshold range, the reversing valve is switched to enable gasified hydrogen to enter a hydrogen liquefying system, and liquid hydrogen obtained by liquefying is stored in a liquid hydrogen storage container;
when the electric quantity of the storage battery is lower than the electric quantity threshold range, the reversing valve is switched to enable gasified hydrogen to sequentially pass through the hydrogen heater and the hydrogen fuel cell, and finally obtained electric energy is stored in the storage battery;
c. repeating the steps a-b;
the step a comprises the following steps:
a1. after the transport tank finishes the liquid hydrogen storage operation, setting a pressure threshold value of the transport tank in the transport process according to the capacity and the temperature of the liquid hydrogen stored in the transport tank; setting an electric quantity threshold value of the storage battery according to the automobile driving distance and the transportation environment;
a2. the pressure detector detects the pressure value in the transportation tank in real time, and when the pressure value is higher than the pressure threshold value, the central processing unit extracts the electric quantity capacity of the storage battery and compares the electric quantity capacity with the electric quantity threshold value range;
the step b comprises the following steps:
b1. when the battery capacity is higher than the electric quantity threshold range, the central processing unit sends an instruction to the reversing valve, so that the gasified hydrogen is input into the liquid hydrogen storage container; when the central processing unit detects that hydrogen enters the liquid hydrogen storage container, the storage battery supplies power to the helium compression refrigeration device, and the helium compression refrigeration device is started to liquefy the hydrogen in the liquid hydrogen storage container according to the inflow amount and the pressure condition of the hydrogen;
b2. under the scene of the step b1, if the central processing unit detects that the helium compression refrigeration device is powered off and the liquefaction operation is stopped, and the concentration of the gasified hydrogen in the liquid hydrogen storage container is still too high, the central processing unit sends a control instruction to the liquid nitrogen container, liquid nitrogen is introduced into a heat exchange cavity of the liquid hydrogen storage container, the liquid nitrogen is used for cooling the hydrogen in the liquid hydrogen storage container, and pressure relief alarm information is sent out;
b3. when the battery capacity is lower than the electric quantity threshold range, the central processing unit sends an instruction to the reversing valve, so that the gasified hydrogen is input to a hydrogen heater arranged on the tractor, the hydrogen heater heats the gasified hydrogen, and after the hydrogen is heated to a set temperature, the gasified hydrogen in the hydrogen heater is input to a hydrogen fuel cell to be combusted, and the generated electric energy is stored in the storage battery;
the step a1 further comprises the following steps:
the central processing unit extracts the navigation information and the weather information in the navigation module and then comprehensively sets the electric quantity threshold range of the storage battery by combining the fuel consumption information of the transport vehicle.
2. The hydrogen transport detection method of claim 1, further comprising the following steps between steps b and c:
vehicle power switching step: when the central processing unit detects that the oil of the fuel oil driving device in the transport vehicle is lower than an oil threshold value and the liquid hydrogen container amount in the liquid hydrogen storage container is higher than a preset value, the central processing unit controls a one-way valve arranged at the bottom of the liquid hydrogen storage container, so that the liquid hydrogen at the bottom of the liquid hydrogen storage container is output to a hydrogen fuel cell to be converted into hydrogen and combusted for power generation; the transport vehicle is switched to be driven by the motor drive.
3. The hydrogen transport detection method of claim 1, further comprising the following steps between steps b and c:
vehicle power switching step: when the central processing unit detects that the oil of the fuel oil driving device in the transport vehicle is about to be exhausted, the central processing unit controls the hydrogen filling tank to send a control instruction, so that the liquid hydrogen in the hydrogen filling tank is output to the hydrogen fuel cell to be converted into the hydrogen and combusted for power generation; the transport vehicle is switched to be driven by the motor driving device; and when the central processing unit detects that the amount of the liquid hydrogen container in the hydrogen filling tank is lower than a preset value, sending driving warning information to a driver.
4. The hydrogen transport detection method according to claim 1, further comprising a container depressurization operation: when the pressure value of the sub-pressure detector is higher than the corresponding preset limit pressure value, the central processing unit controls the one-way valve at the corresponding position, so that the liquid hydrogen in the liquid hydrogen storage container flows into the transportation tank, the reversing valve is switched to stop inputting hydrogen into the liquid hydrogen storage container, and pressure relief alarm information is sent out.
5. A hydrogen transportation management system to which the hydrogen transportation detection method according to any one of claims 1 to 4 is applied, the hydrogen transportation management system including a transportation vehicle composed of a tractor providing driving force and a loading portion for loading liquid hydrogen; the tractor is provided with an information transmission module, a central processing unit, a hydrogen heater, a hydrogen fuel cell, a storage battery, a motor driving device and a fuel driving device;
the loading part is provided with a hydrogen pipeline, a transportation tank, a reversing valve, a hydrogen liquefying system and a liquid hydrogen storage container; a pressure detector is arranged in the transportation tank;
one end of the hydrogen transportation pipeline is communicated with the top of the transportation tank, and the other end of the hydrogen transportation pipeline is connected with the input end of the reversing valve; the output end of the reversing valve is connected with a first branch pipeline and a second branch pipeline in parallel;
the first branch pipeline sequentially connects the hydrogen liquefaction system and the liquid hydrogen storage container in series; the second branch pipeline sequentially connects the hydrogen heater and the hydrogen fuel cell in series; the current output end of the hydrogen fuel cell is connected with the current input end of the storage battery, and the current output end of the storage battery is respectively connected with the hydrogen liquefying system and the motor driving device in parallel; the current output end of the fuel oil driving device is connected with the current end input end of the storage battery;
the information transmission module is electrically connected with the central processing unit and is used for realizing communication control among the pressure detection sensor, the reversing valve, the hydrogen liquefaction system, the liquid hydrogen storage container, the hydrogen heater, the hydrogen fuel cell, the storage battery, the motor driving device and the fuel oil driving device and the central processing unit.
6. The hydrogen transport management system of claim 5, wherein the hydrogen liquefaction system comprises a helium compression refrigeration unit and a liquid nitrogen container; and both the liquid nitrogen stored in the liquid nitrogen container and the helium gas compression refrigerating device are used for refrigerating and liquefying hydrogen gas in the liquid hydrogen storage container.
7. The hydrogen transportation management system of claim 5, wherein the outlet at the top of the liquid hydrogen storage container is in unidirectional parallel communication with the top of the transportation tank and the hydrogen heater; the bottom output port of the liquid hydrogen storage container is communicated with the transportation tank in a one-way mode; the tractor is also provided with a hydrogen filling tank, the hydrogen filling tank is used for filling and storing hydrogen into the transport vehicle, and the output end of the hydrogen filling tank is communicated with the input end of the hydrogen fuel cell; be equipped with liquid level detector and sub pressure detector in the liquid hydrogen storage container, sub pressure detector is used for detecting hydrogen pressure in the liquid hydrogen storage container, liquid level detector is used for detecting the stock solution hydrogen volume.
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