Liquid hydrogen transport tank truck

Abstract

The embodiment of the present application discloses a liquid hydrogen transport tank truck, which includes a pressure tank, a wheeled frame, a driving trailer and a fuel supply pipeline; the pressure tank is used to transport liquid hydrogen fuel, and the liquid hydrogen fuel includes liquid hydrogen and gaseous hydrogen; the wheeled frame is fixed to the bottom of the pressure tank; the rear side of the driving trailer is fixed to the front side of the pressure tank; the driving trailer includes a hydrogen fuel cell, the hydrogen fuel cell and the pressure tank are connected through a fuel supply pipeline, and the hydrogen fuel cell is used to obtain the gaseous hydrogen required for combustion from the pressure tank through the fuel supply pipeline. In the embodiment of the present application, based on the method of directly using the transported liquid hydrogen fuel as the driving fuel, the cruising range of the liquid hydrogen transport tank truck can be greatly improved, avoiding the limitation of fuel replenishment conditions during transportation, so that the liquid hydrogen transport tank truck in the present application can achieve long-distance hydrogenation.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of liquid hydrogen transportation, and in particular to a liquid hydrogen transportation tank truck. Background Art

[0002] Liquid hydrogen is a colorless, odorless, high-energy, low-temperature liquid fuel that is widely used in launch vehicles such as communication satellites, spacecraft and space shuttles, and as a fuel for new energy vehicles.

[0003] With the widespread use of liquid hydrogen, its supply has also increased rapidly, which has led to an increasing number of hydrogen refueling stations. Liquid hydrogen is a flammable and explosive dangerous good. In the process of supplying hydrogen to hydrogen refueling stations, professional transport tank trucks are required to safely transport hydrogen energy to each hydrogen refueling station.

[0004] However, the transport tank trucks provided in the relevant technology cannot provide hydrogen energy to multiple hydrogen refueling stations at one time due to the limited storage capacity of the liquid hydrogen storage tanks. In addition, for hydrogen refueling stations with remote geographical locations and long distances between nearby gas stations, it is difficult for transport tank trucks to provide hydrogen energy to the hydrogen refueling stations. Accordingly, other more costly liquid hydrogen transportation methods need to be adopted to achieve the hydrogen energy supply of the above-mentioned hydrogen refueling stations. Summary of the invention

[0005] The embodiment of the present application provides a liquid hydrogen transport tank truck, which can be used to solve the problem that the liquid hydrogen transport tank truck provided by the related art cannot safely transport liquid hydrogen fuel over long distances. The technical solution is as follows:

[0006] On the one hand, an embodiment of the present application provides a liquid hydrogen transport tank truck, the liquid hydrogen transport tank truck comprising a pressure tank, a wheeled frame, a driving trailer and a fuel supply pipeline;

[0007] The pressure tank is used to transport liquid hydrogen fuel, and the liquid hydrogen fuel includes liquid hydrogen and gaseous hydrogen;

[0008] The wheeled frame is fixedly mounted on the bottom of the pressure tank;

[0009] The rear side of the driving trailer is fixedly mounted with the front side of the pressure tank;

[0010] The driving trailer includes a hydrogen fuel cell, and the hydrogen fuel cell and the pressure tank are connected via the fuel supply pipeline. The hydrogen fuel cell is used to obtain the gaseous hydrogen required for combustion from the pressure tank via the fuel supply pipeline.

[0011] Optionally, the fuel supply pipeline includes a gas input end and a gas output end, and the pressure tank includes a gas outlet;

[0012] The gas input end is connected to the gas outlet;

[0013] The gas output end is connected to the hydrogen fuel cell.

[0014] Optionally, the liquid hydrogen transport tank truck further includes an evaporator, the evaporator is connected to the pressure tank through the fuel supply pipeline, and the evaporator includes a heating chamber and an evaporation chamber;

[0015] The heating chamber is used to heat the liquid hydrogen fuel so that the heated liquid hydrogen fuel evaporates to generate a hydrogen mixture and flows into the evaporation chamber;

[0016] The evaporation chamber is used to obtain the gaseous hydrogen after performing gas-liquid separation on the hydrogen mixture.

[0017] Optionally, the liquid hydrogen transport tank truck further includes a heating control device;

[0018] The heating control device is electrically connected to the evaporator, and the heating control device is used to control the opening and closing of the heating chamber.

[0019] Optionally, the pressure tank is provided with at least one pressure monitoring element;

[0020] The pressure monitoring element is used to monitor the pressure state of the pressure tank and obtain at least one pressure monitoring data according to the pressure state.

[0021] Optionally, the liquid hydrogen transport tank truck further includes a pressure monitoring display;

[0022] The pressure monitoring display is used to display the pressure monitoring data.

[0023] Optionally, the liquid hydrogen transport tank truck further includes a storage monitoring module and a drive monitoring module;

[0024] The storage monitoring module is used to obtain the pressure monitoring data;

[0025] The drive monitoring module is used to monitor the operating status of the liquid hydrogen transport tank truck and generate operating monitoring data according to the operating status.

[0026] Optionally, the liquid hydrogen transport tank truck further includes a general monitoring module;

[0027] The overall monitoring module is used to monitor the heating control device according to the pressure monitoring data, and / or to monitor the operating status of the liquid hydrogen transport tank truck according to the operating monitoring data.

[0028] Optionally, the liquid hydrogen transport tank truck further includes a general monitoring module;

[0029] The general monitoring module is used to send the pressure monitoring data and the operation monitoring data to the base control center;

[0030] The general monitoring module is used to receive the reference instructions returned by the base control center, and monitor the operating status of the heating control equipment and the liquid hydrogen transport tank truck according to the reference instructions.

[0031] Optionally, the liquid hydrogen transport tank truck further includes an emergency release device, which includes a temporary frame, an emergency ejection assembly, an emergency support shaft and an emergency wheel;

[0032] The temporary frame is fixedly mounted on the bottom of the pressure tank, the emergency pop-up assembly is located inside the temporary frame, and the emergency pop-up assembly, the emergency support shaft and the emergency wheel are connected in sequence;

[0033] The emergency pop-up assembly is used to control the emergency support shaft and the emergency wheel to descend when an emergency occurs.

[0034] In the embodiment of the present application, from the appearance, the liquid hydrogen transport tank truck mainly includes a pressure tank, a wheeled frame and a driving trailer, and the wheeled frame is fixed to the bottom of the pressure tank, and the rear side of the driving trailer is fixed to the front side of the pressure tank, thereby realizing the integrated structure of the liquid hydrogen transport tank truck. Compared with the split structure design in the related art, the integrated structure design of the liquid hydrogen transport tank truck based on the present application can further improve the safety and maneuverability of the whole vehicle; in addition, from the internal structure, the liquid hydrogen transport tank truck is also provided with a fuel supply pipeline for realizing the delivery of gaseous hydrogen in the pressure tank to the hydrogen fuel cell, so that the hydrogen fuel cell generates electricity using gaseous hydrogen, and then realizes the driving and operation of the liquid transport tank truck. Compared with the fuel-driven mode of the transport vehicle in the related art, the mode of directly using the transported liquid hydrogen fuel as the driving fuel in the present application can greatly improve the endurance of the liquid hydrogen transport tank truck, avoid being restricted by the fuel replenishment conditions during the transportation process, so that the liquid hydrogen transport tank truck in the present application can realize long-distance hydrogen refueling. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A structural diagram of a liquid hydrogen transport tank truck provided in an embodiment of the present application is shown;

[0036] Figure 2 A structural diagram of another liquid hydrogen transport tanker provided in an embodiment of the present application is shown;

[0037] Figure 3 A schematic diagram of a scene of a liquid hydrogen transport tank truck transportation process provided in an embodiment of the present application is shown;

[0038] Figure 4A structural diagram of a liquid hydrogen transport tank truck for realizing rapid separation of a driving trailer and a pressure tank provided in an embodiment of the present application is shown.

[0039] The reference numerals in the accompanying drawings are described as follows:

[0040] 100: Liquid hydrogen transport tanker; 101: Pressure tank; 102: Wheeled frame;

[0041] 103: Driving trailer; 104: Pressure inner tank; 105: Hydrogen fuel cell;

[0042] 106: fuel supply pipeline; 107: heating chamber; 108: evaporation chamber;

[0043] 109: Heating control device; 110: Pressure monitoring element; 111: Battery;

[0044] 112: temporary frame; 113: emergency ejection assembly; 114: emergency support shaft;

[0045] 115: Emergency wheel.

[0046] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0047] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0048] The term "multiple" as used herein refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0049] Please refer to Figure 1 , which shows a schematic structural diagram of a liquid hydrogen transport tank truck provided in an illustrative embodiment of the present application.

[0050] In the present application, a liquid hydrogen transport tank truck 100 is provided, that is, the use scenario of the liquid hydrogen transport tank truck 100 is illustrated by taking the transportation of liquid hydrogen fuel as an example; in addition, the main shape of the liquid hydrogen transport tank truck 100 is illustrated by taking a box-type cavity as an example, and the embodiment of the present application does not limit the specific main shape of the liquid hydrogen transport tank truck 100.

[0051] Indicative, such as Figure 1As shown, in the liquid hydrogen transport tank truck 100 , the main body of the liquid hydrogen transport tank truck 100 includes a pressure tank 101 , a wheeled frame 102 and a driving trailer 103 .

[0052] In a possible implementation, the wheeled frame 102 is connected to the bottom of the pressure tank 101 and supports the pressure tank 101 by a fixed manner; the rear side of the driving trailer 103 is fixed together with the front side of the pressure tank 101, so that the driving trailer 103 and the pressure tank 101 realize an integrated structure.

[0053] In fact, in the process from conventional hydrogen to liquid hydrogen fuel, a low-temperature liquid hydrogen storage process is used, which requires cooling gaseous hydrogen to minus 253 degrees Celsius to form liquid hydrogen, and storing the liquid hydrogen in a vacuum insulated container. Therefore, considering the storage characteristics of liquid hydrogen fuel, in a possible implementation, the liquid hydrogen transport tanker 100 adopts a double-layer tank wall structure, the space between each tank wall is an interlayer, and the interlayer is provided with multiple layers of radiation screens, and each layer of radiation screen is separated by an insulating material, and the remaining interlayer space is in a vacuum state.

[0054] Accordingly, the pressure tank 101 includes a pressure inner tank 104 and a pressure outer tank, and the interlayer between the pressure inner tank 104 and the pressure outer tank is designed based on the interlayer under the above-mentioned double-layer tank wall structure. In the embodiment of the present application, the pressure tank 101 is used to transport liquid hydrogen fuel, and the pressure inner tank 104 stores the liquid hydrogen fuel transported by the pressure tank 101. The pressure tank 101 provides a guarantee for the safe transportation of liquid hydrogen fuel through the above-mentioned interlayer design.

[0055] In a possible implementation, the liquid hydrogen fuel stored in the pressure inner tank 104 includes not only liquid hydrogen stored at low temperatures, but also gaseous hydrogen, wherein the gaseous hydrogen is used as a driving fuel for the liquid hydrogen transport tanker 100 .

[0056] Accordingly, the driving trailer 103 includes a hydrogen fuel cell 105 , which uses gaseous hydrogen as a driving fuel, thereby providing electrical energy for the operation of the entire liquid hydrogen transport tank truck 100 .

[0057] In order to transport the gaseous hydrogen in the pressure inner tank 104 to the driving trailer 103 as the driving fuel of the hydrogen fuel cell 105, in a possible implementation, the liquid hydrogen transport tanker 100 further includes a fuel supply pipeline 106, and the hydrogen fuel cell 105 and the pressure tank 101 are connected through the fuel supply pipeline 106, and the hydrogen fuel cell 105 obtains the gaseous hydrogen required for combustion from the pressure inner tank 104 through the fuel supply pipeline 106. Compared with the fuel drive in the related art, the driving trailer 103 in the embodiment of the present application uses the transportation product of the car itself as the driving fuel, which can avoid being restricted by refueling conditions during long-distance transportation.

[0058] In addition, for the hydrogen fuel cell 105 in the embodiment of the present application, in a possible implementation, the driving trailer 103 is also provided with a motor, and the hydrogen fuel cell 105 is connected to the motor through an electrical component, and the electrical component processes the electrical energy generated by the hydrogen fuel cell 105 burning gaseous hydrogen and transmits it to the motor. The motor is used to drive the liquid hydrogen transport tank truck 100 to travel using electrical energy.

[0059] In an embodiment of the present application, a hydrogen fuel cell driving method is provided, that is, during the driving process of the liquid hydrogen transport tank truck 100, the hydrogen fuel cell 105 directly transmits the electrical energy generated by burning gaseous hydrogen to the motor through electrical components, and the motor then drives the liquid transport tank truck.

[0060] The electrical components are used to effectively output the electrical energy generated by the hydrogen fuel cell 105, such as controlling the output voltage, power, and dynamic adjustment of the output voltage of the hydrogen fuel cell 105. Optionally, the electrical components that implement the above functions are mainly DC / DC converters. In the embodiments of the present application, the specific electrical component structure is not limited.

[0061] In summary, in the embodiment of the present application, from the appearance, the liquid hydrogen transport tank truck mainly includes a pressure tank, a wheeled frame and a driving trailer, and the wheeled frame is fixedly arranged with the bottom of the pressure tank, and the rear side of the driving trailer is fixedly arranged with the front side of the pressure tank, thereby realizing the integrated structure of the liquid hydrogen transport tank truck. Compared with the split structure design in the related art, the integrated structure design of the liquid hydrogen transport tank truck based on the present application can further improve the safety and maneuverability of the whole vehicle; in addition, from the internal structure, the liquid hydrogen transport tank truck is also provided with a fuel tank. The supply pipeline is used to transport the gaseous hydrogen in the pressure tank to the hydrogen fuel cell, so that the hydrogen fuel cell uses the gaseous hydrogen to generate electricity, and then provides electricity for the drive and operation of the liquid transport tank truck. Compared with the fuel-driven method of transport vehicles in related technologies, the method of directly using the transported liquid hydrogen fuel as the driving fuel in this application can greatly improve the endurance of the liquid hydrogen transport tank truck, avoid being restricted by fuel replenishment conditions during transportation, and enable the liquid hydrogen transport tank truck in this application to achieve long-distance hydrogen refueling.

[0062] exist Figure 1 Based on Figure 2 , which shows a schematic structural diagram of a liquid hydrogen transport tank truck provided in another exemplary embodiment of the present application, so as to further illustrate the process of the hydrogen fuel cell 105 obtaining gaseous hydrogen from the pressure tank 101 in this embodiment.

[0063] Optionally, the fuel supply pipeline 106 includes a gas input end and a gas output end, the pressure tank 101 includes a gas outlet, the gas input end is connected to the gas outlet, and the gas output end is connected to the hydrogen fuel cell 105 .

[0064] In one possible embodiment, gaseous hydrogen escapes from the gas outlet of the pressure tank 101 and flows into the gas input end of the fuel supply pipeline 106; after the gaseous hydrogen flows into the fuel supply pipeline 106 from the gas input end, it flows to the gas output end; the gaseous hydrogen flows out from the gas output end and flows into the hydrogen fuel cell 105.

[0065] As for the liquid fuel stored in the pressure tank 101, most of the liquid fuel is liquid hydrogen due to the low temperature protection of the interlayer. In order to enable the liquid hydrogen transport tank truck 100 to continuously provide gaseous hydrogen for the hydrogen fuel cell 105, the liquid hydrogen transport tank truck 100 optionally further includes an evaporator, which is disposed between the hydrogen fuel cell 105 and the pressure tank 101, and the evaporator is connected to the pressure tank 101 through a fuel supply pipeline 106.

[0066] Optionally, the evaporator includes a heating chamber 107 and an evaporation chamber 108. The heating chamber 107 is used to generate heat energy so that the liquid hydrogen fuel in the pressure tank 101 is heated and evaporated to generate a hydrogen mixture, which flows into the evaporation chamber 108; the evaporation chamber 108 is used to separate the hydrogen mixture into gas and liquid to obtain gaseous hydrogen.

[0067] In a possible implementation, the heating chamber 107 in the evaporator is in working state, and the temperature of the liquid hydrogen fuel in the pressure tank 101 is slowly increased, so that part of the liquid hydrogen obtains heat and evaporates into gaseous hydrogen. The gaseous hydrogen generated by evaporation is not actually pure gaseous hydrogen, but a hydrogen mixture containing liquid hydrogen droplets. Therefore, based on the fluidity of the gas, the hydrogen mixture flows into the evaporation chamber 108, and the evaporation chamber 108 can separate the liquid hydrogen droplets from the hydrogen mixture through a filter material such as a filter screen, thereby obtaining pure gaseous hydrogen.

[0068] As mentioned above, the heating function can only be realized when the heating chamber 107 is in working state. Therefore, in the embodiment of the present application, optionally, the liquid hydrogen transport tanker 100 also includes a heating control device 109, which is arranged in the driving trailer 103 and electrically connected to the evaporator, and the heating control device 109 is used to control the opening and closing of the heating chamber 107. When the heating control device 109 controls the heating chamber 107 to open, the heating chamber 107 is in working state; when the heating control device 109 controls the heating chamber 107 to close, the heating chamber 107 is in non-working state.

[0069] In a possible implementation, there are conditional restrictions on when to open the heating chamber 107, that is, the heating control device 109 controls the opening or closing of the heating chamber 107 based on certain reference conditions. The reference conditions are mainly set based on the pressure state in the pressure tank 101.

[0070] Liquid hydrogen fuel in a cryogenic state has a safe pressure range, which includes an upper pressure limit and a lower pressure limit, wherein the lower pressure limit is higher than the gas pressure outside the pressure tank 101. When the pressure value inside the pressure tank 101 is within the above-mentioned safe pressure range, due to the influence of the pressure difference, the pressure inside the pressure tank 101 is greater than the pressure outside the pressure tank 101, and part of the gaseous hydrogen in the pressure tank 101 will automatically escape from the gas outlet and flow into the fuel supply pipeline 106.

[0071] However, when the pressure value in the pressure tank 101 is lower than the lower pressure limit, due to the influence of the pressure difference, the pressure in the pressure tank 101 is lower than the pressure outside the pressure tank 101, which will cause the air outside the pressure tank 101 to be sucked back into the pressure tank 101, and hydrogen is very likely to explode under the combination of oxygen. In order to prevent the problem of air back-inhalation caused by the pressure difference, in a possible implementation, when the pressure value in the pressure tank 101 is lower than the lower pressure limit, the heating control device 109 controls the heating chamber 107 to open, so that the pressure in the pressure tank 101 is increased after heating, thereby avoiding the phenomenon of air back-inhalation.

[0072] In addition, the pressure tank 101 is also provided with at least one pressure monitoring element 110, and the pressure monitoring element 110 is used to monitor and control the pressure state of the pressure tank 101, and obtain at least one pressure monitoring data according to the pressure state.

[0073] For the pressure monitoring element 110, if the pressure monitoring element 110 is normal, each pressure monitoring element 110 can monitor and obtain a pressure monitoring data; if there is a pressure monitoring element 110 that is damaged, the damaged pressure monitoring element 110 cannot monitor the pressure, and only the undamaged pressure monitoring element 110 can obtain the pressure monitoring data.

[0074] When at least two pressure monitoring elements 110 are provided in the liquid hydrogen transport tank truck 100, the average value of each pressure monitoring data is taken as the pressure data of the pressure tank 101. Furthermore, if there is pressure monitoring data with a large difference value, the pressure of the pressure tank 101 is re-monitored, or the pressure monitoring data with a large difference value is excluded.

[0075] In an illustrative example, the pressure safety range of the pressure tank 101 is between 10KPa and 30KPa, that is, the upper pressure limit is 30KPa and the lower pressure limit is 10KPa, and the pressure tank 101 is provided with three pressure monitoring elements 110. During a pressure monitoring process, the pressure monitoring data of each pressure monitoring element 110 is 8.1KPa, 8.3KPa and 7.9KPa, and the final pressure data of the pressure tank 101 is 8.1KPa. At this time, the heating control device 109 obtains the pressure data of 8.1KPa, and determines that the pressure value in the pressure tank 101 is lower than the lower pressure limit, and then controls the heating chamber 107 to open.

[0076] In addition, in addition to opening the heating chamber 107 when the pressure value in the pressure tank 101 is lower than the pressure, in another possible embodiment, when the gaseous hydrogen flowing into the hydrogen fuel cell 105 is insufficient, the above-mentioned heating control device 109 controls the heating chamber 107 to open, so that more liquid hydrogen evaporates into gaseous hydrogen after heating, and flows into the hydrogen fuel cell 105 through the fuel supply pipe 106, thereby solving the problem of insufficient driving fuel in the hydrogen fuel cell 105.

[0077] Optionally, the liquid hydrogen transport tank truck 100 further includes a pressure monitoring display, which is optionally provided on the periphery of the pressure tank 101, and is used to display the pressure monitoring data monitored by each pressure monitoring element 110. By providing the pressure monitoring display, it is convenient for the driver to understand the pressure changes in the pressure tank 101.

[0078] For the liquid hydrogen transport tank truck 100, a cab is also provided for the driver to operate. Optionally, in order to ensure the safety of liquid hydrogen transportation, in the embodiment of the present application, the cab is provided with at least three driving positions.

[0079] Optionally, in the embodiment of the present application, the pressure tank 101 is a large-capacity liquid hydrogen storage tank, which can store at least 5 liters of liquid hydrogen and a maximum of 120 liters of liquid hydrogen. With the subsequent upgrade of the liquid hydrogen transport tanker 100, its maximum storable liquid hydrogen volume will continue to increase.

[0080] Optionally, the pressure safety range of the pressure tank 101 shown in the above exemplary example is only for illustrative purposes and does not limit the specific tolerable pressure of the pressure tank 101 in the present application. In the embodiment of the present application, the pressure in the pressure tank 101 can vary between 0 MPa and 2 MPa, and with the subsequent upgrade of the liquid hydrogen transport tank truck 100, its maximum tolerable pressure will continue to increase.

[0081] In the above embodiment, a hydrogen fuel cell driving mode is provided. In addition, the embodiment of the present application also provides a battery driving mode. Regardless of the hydrogen fuel cell driving mode or the battery driving mode, electrical energy is obtained from the hydrogen fuel cell 105.

[0082] In a possible implementation, the driving trailer 103 is further provided with a battery 111, and the hydrogen fuel cell 105 is connected to the battery 111 and the motor through electrical components, respectively, and the electrical components process the electrical energy generated by the hydrogen fuel cell 105 burning gaseous hydrogen and transmit it to the battery 111 and the motor. The battery 111 is used to store the transmitted electrical energy.

[0083] In order to reduce the continuous operation time of the hydrogen fuel cell 105, in a possible implementation, when the liquid hydrogen transport tank truck 100 stops running, the hydrogen fuel cell 105 obtains gaseous hydrogen and transmits the electricity generated by the combustion to the battery 111 and the motor through electrical components; when the liquid hydrogen transport tank truck 100 starts to drive, that is, during the driving process of the liquid hydrogen transport tank truck 100, the battery 111 directly provides electricity to the motor, thereby driving the driving of the liquid hydrogen transport tank truck 100.

[0084] The above possible implementation method is a battery drive mode. Therefore, in order to realize the battery drive mode in the embodiment of the present application, an electrical component is also provided between the battery 111 and the motor, which is used to convert the electric energy stored in the battery 111 and transmit the electric energy to the motor under the battery drive mode, so that the motor drives the liquid hydrogen transport tank truck 100 to travel after obtaining the electric energy. Among them, the electrical component is used to effectively output the electric energy generated by the hydrogen fuel cell 105, such as controlling the output voltage and power of the hydrogen fuel cell 105 and the battery, and the dynamic adjustment of the output voltage. Optionally, the electrical component that realizes the above functions is mainly a DC / DC converter. In the embodiment of the present application, the specific electrical component structure is not limited.

[0085] For an illustrative example, see Figure 3, which shows a scene schematic diagram of the liquid hydrogen transport tank truck transportation process provided by an embodiment of the present application. The liquid hydrogen transport tank truck 100 has an integrated structural design. At the beginning, the staff of the base control center loads liquid hydrogen fuel for the liquid hydrogen transport tank truck 100, and the liquid hydrogen transport tank truck 100 is transported to (i.e., various hydrogen refueling stations) through the road network under the control of the driver; during the driving process, the liquid hydrogen transport tank truck 100 uses a hydrogen fuel cell drive mode, and / or a battery drive mode to travel; when the liquid hydrogen transport tank truck 100 arrives at the location of the hydrogen user, the staff at the location of the hydrogen user unloads the liquid hydrogen fuel into the liquid hydrogen storage equipment at the user's location to complete the liquid hydrogen transportation operation. Since liquid hydrogen fuel is used as the driving fuel during driving, the continuous driving distance of the liquid hydrogen transport tank truck 100 can reach hundreds of kilometers or even thousands of kilometers.

[0086] In the above illustrative example, the unloading of liquid hydrogen fuel can be achieved through the evaporator. In a possible implementation, when the liquid hydrogen transport tank truck 100 arrives at the destination, the staff controls the heating chamber 107 in the evaporator to open through the heating control device 109. Due to the increase in temperature, the liquid hydrogen evaporates into gaseous hydrogen, and under the action of the pressure difference, it automatically escapes from the gas outlet of the pressure tank 101 and flows into the unloading pipeline provided at the destination.

[0087] In summary, Figure 1On the basis of the structure of the liquid hydrogen transport tank truck shown in the figure, in the embodiment of the present application, an evaporator is also provided, and the evaporator includes a heating chamber and an evaporation chamber, so that in the present application, the dynamic adjustment of the pressure in the pressure tank can be achieved by controlling the opening and closing of the heating chamber; when the heating chamber is opened, more gaseous hydrogen is generated in the pressure tank, thereby solving the problem of insufficient driving fuel in the hydrogen fuel cell; when the heating chamber is opened, the temperature in the pressure tank rises, and then the pressure also rises. When the pressure in the pressure tank is greater than the pressure outside the pressure tank, the gaseous hydrogen in the pressure tank automatically escapes from the gas outlet and flows into the hydrogen fuel cell through the fuel supply pipeline, thereby solving the problem of air backflow when the pressure in the pressure tank is lower than the pressure outside the pressure tank; wherein, when the heating chamber is in a working state, the evaporated hydrogen generated Under the filtering action of the evaporation chamber, pure gaseous hydrogen is separated from the hydrogen mixture, so that the gaseous hydrogen flowing into the fuel supply pipeline is pure gaseous hydrogen, thereby ensuring the safe operation of the hydrogen fuel cell; in addition, in order to realize the pressure monitoring of the pressure tank, the liquid hydrogen transport tank truck is also provided with a pressure monitoring display and at least one pressure monitoring element, and can obtain multiple pressure monitoring data, thereby improving the accuracy of the pressure monitoring of the pressure tank; in the embodiment of the present application, since the liquid hydrogen fuel stored in the pressure tank is used as the driving fuel during driving, the continuous driving distance of the liquid hydrogen transport tank truck can reach hundreds of kilometers or even thousands of kilometers. Compared with the transport tank truck in the related art, the liquid hydrogen transport tank truck in the embodiment of the present application further improves the continuous driving distance.

[0088] Optionally, in various embodiments of the present application, it may be a liquid hydrogen transport tank truck 100 designed based on intelligent control technology, or it may be a liquid hydrogen transport tank truck 100 designed based on artificial intelligence control.

[0089] Furthermore, in order to facilitate the driver to operate the liquid hydrogen transport tank truck 100 and further improve the safety of the tank truck, in a possible implementation, the liquid hydrogen transport tank truck 100 further includes a storage monitoring module and a drive monitoring module. The storage monitoring module is used to obtain pressure monitoring data, and the drive monitoring module is used to monitor the operating state of the liquid hydrogen transport tank truck 100 and generate operating monitoring data according to the operating state.

[0090] Since the storage monitoring module and the drive monitoring module are independent monitoring modules, in order to facilitate the driver in the cab to monitor the entire vehicle, optionally, the liquid hydrogen transport tank truck 100 also includes a total monitoring module.

[0091] In a possible implementation, each pressure monitoring element 110 monitors and obtains at least one pressure monitoring data, the storage monitoring module obtains the pressure monitoring data, and sends the pressure monitoring data to the overall monitoring module. The driver learns the pressure monitoring data of the pressure tank 101 through the overall monitoring module, and monitors the heating control device 109 according to the specific pressure monitoring data.

[0092] In an illustrative example, the storage monitoring module obtains three pressure monitoring data (8.1KPa, 8.3KPa and 7.9KPa), and the storage monitoring module sends the pressure monitoring data to the main monitoring module. The driver checks the various pressure monitoring data through the control screen set in the cab, and determines that the current pressure value of the pressure tank 101 is lower than the lower pressure limit. Then the driver triggers the command signal to open the heating control device 109 through the control screen. After the main monitoring module obtains the command signal, it controls the heating control device 109 to open the heating chamber 107 of the evaporator.

[0093] If the pressure data obtained by real-time monitoring is far lower than the pressure outside the pressure tank 101, the problem of air backflow cannot be avoided in time if the heating chamber 107 is opened. Therefore, in a possible implementation, a pressure judgment interval is set.

[0094] In an illustrative example, the pressure judgment interval is set to 0.5 KPa. The lower limit of pressure is 10 KPa. At this time, the storage monitoring module obtains the real-time pressure of the pressure tank 101 as 10.3 KPa. After obtaining the pressure data of the implementation, the total monitoring module sends a safety prompt message to the driver through the control screen in the cab to warn the driver that the current pressure of the pressure tank 101 is close to the lower limit of pressure, and asks the driver to issue an instruction to open the heating chamber 107 in advance.

[0095] In one possible implementation, the driving monitoring module monitors the operating status of the liquid hydrogen transport tank truck 100, and sends the obtained operating monitoring data to the overall monitoring module. The driver learns about the operating status of the liquid hydrogen transport tank truck 100 through the overall monitoring module, and monitors the operating status of the liquid hydrogen transport tank truck 100 according to the specific operating monitoring data.

[0096] Optionally, the operating status includes driving speed, driving direction, geographical location, tank truck temperature, etc., which is not limited in the embodiments of the present application.

[0097] In an illustrative example, the driving monitoring module detects that the geographical location of the liquid hydrogen transport tank truck 100 deviates from the expected driving route. The driving monitoring module sends the operation monitoring data containing the geographical location and driving direction information to the overall monitoring module. The driver learns through the overall monitoring module that the liquid hydrogen transport tank truck 100 has currently deviated from the driving route, and then adjusts the current driving direction of the liquid hydrogen transport tank truck 100.

[0098] During driving, due to the limitations of the driver's analytical and control capabilities, as well as the influence of external uncertain factors, in a possible implementation, the overall monitoring module is also used to send pressure monitoring data and operation monitoring data to the base control center.

[0099] When the technicians of the base control center obtain the pressure monitoring data and the operation monitoring data, they analyze and obtain the reference instructions, and send the reference instructions to the general monitoring module on the liquid hydrogen transport tank truck 100. The general monitoring module receives the reference instructions returned by the base control center, and monitors the operation status of the heating control device 109 and the liquid hydrogen transport tank truck 100 according to the reference instructions.

[0100] In summary, in the embodiments of the present application, on the basis of the liquid hydrogen transport tank truck provided in the above-mentioned embodiments, the liquid hydrogen transport truck also includes a storage monitoring module and a drive monitoring module. Among them, the storage monitoring module is used to obtain pressure monitoring data, and the drive monitoring module is used to monitor the operating status of the liquid hydrogen transport tank truck, and generate operation monitoring data according to the operating status. Thereby facilitating the driver to operate the liquid hydrogen transport tank truck and further improving the safety of the tank truck driving; in addition, the liquid hydrogen transport tank truck also includes a total monitoring module, which improves the convenience of the driver to monitor the entire vehicle; wherein, the total monitoring module is also used to send pressure monitoring data and operation monitoring data to the base control center, and the reference instructions returned by the base control center improve the judgment ability of the driver, thereby ensuring the driving safety of the liquid hydrogen transport tank truck.

[0101] In the above-mentioned embodiments, the liquid hydrogen transport tank truck 100 is an integrated structural design, that is, the driving trailer 103 and the pressure tank 101 are inseparable. Due to the high risk of liquid hydrogen fuel, in the process of liquid hydrogen transportation, in order to quickly separate the cab from the pressure tank 101 in an emergency, in a possible implementation, the liquid hydrogen transport tank truck 100 also includes an emergency separation device, which is used to separate the driven trailer 103 from the pressure tank 101 in an emergency. Schematically, as shown Figure 4As shown, the emergency separation device includes a temporary frame 112, an emergency pop-up assembly 113, an emergency support shaft 114 and an emergency wheel 115, wherein the temporary frame 112 is fixed to the bottom of the pressure tank 101, the emergency pop-up assembly 113 includes a compressed gas tank, a cylinder and an emergency valve, and the connecting part between the emergency support shaft 114 and the emergency pop-up assembly 113 is provided with a spring assembly.

[0102] Optionally, a disengagement program is preset in the main control module. When an emergency occurs, the driver triggers a start signal by operating the operable display screen in the cab, or by operating corresponding buttons and joysticks. When the main control module receives the start signal, the disengagement program is started, and an electrical signal instructing the emergency valve to be opened is continuously sent to the emergency pop-up assembly 113. The emergency valve of the emergency pop-up assembly 113 and the temporary frame 112 are provided with a signal receiver. At this time, the temporary frame 112 disconnects the mechanical connection with the rear frame part of the driving trailer 103. The emergency valve opens after receiving the electrical signal, and the spring assembly in a compressed state quickly pops open, and the emergency support shaft 114 connected to the emergency pop-up assembly 113 descends. In order to increase the pop-up speed of the spring assembly, when the emergency valve is opened, the compressed gas tank and the cylinder generate a huge impact force toward the ground, and the spring assembly pops out quickly, so that the emergency wheel 115 connected to the emergency support shaft 114 quickly contacts the ground. The combination of the emergency support shaft 114 and the emergency wheel 115 provides front support for the separated pressure tank 101 , and drives the pressure tank 101 together with the wheeled frame 102 fixed to the bottom of the pressure tank 101 .

[0103] In addition, in the implementation of the present application, in order to achieve the rapid separation of the driving trailer 103 and the pressure tank 101, in addition to the above-mentioned emergency separation device, the fuel supply pipeline 106 is provided with two emergency shut-off valves, and a quick disconnect connector is provided between the two emergency shut-off valves. Once the quick disconnect connector is disconnected, the two emergency shut-off valves are automatically closed to prevent leakage of the internal liquid hydrogen mixture.

[0104] In summary, Figure 4 A liquid hydrogen transport tanker structure that can achieve rapid separation of a driving trailer from a pressure tank is shown. Optionally, the main control module starts the separation program after receiving a start signal triggered by the driver. The main control module continuously sends an electrical signal to the emergency pop-up assembly to instruct the emergency valve to open. After the emergency valve is opened, the spring assembly pops up quickly. At the same time, under the auxiliary action of the impact force on the ground provided by the compressed gas tank and the cylinder, the spring assembly pops up quickly, so that the emergency wheel connected to the emergency support shaft quickly contacts the ground. In addition, the fuel supply pipeline is provided with two emergency shut-off valves and quick disconnect connectors. When an emergency occurs, the quick disconnect connector is disengaged, and the emergency shut-off valve is automatically closed to prevent leakage of the internal liquid hydrogen mixture, so that the driver can quickly escape through the emergency disconnect device while ensuring the safety of liquid hydrogen storage.

[0105] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid hydrogen transport tank truck, characterized in that: The liquid hydrogen transport tank truck comprises a pressure tank, a wheeled frame, a driving trailer and a fuel supply pipeline; The pressure tank is used to transport liquid hydrogen fuel, and the liquid hydrogen fuel includes liquid hydrogen and gaseous hydrogen; The wheeled frame is fixedly mounted on the bottom of the pressure tank; The rear side of the driving trailer is fixedly mounted with the front side of the pressure tank; The driving trailer includes a hydrogen fuel cell, the hydrogen fuel cell and the pressure tank are connected via the fuel supply pipeline, and the hydrogen fuel cell is used to obtain the gaseous hydrogen required for combustion from the pressure tank via the fuel supply pipeline; The liquid hydrogen transport tank truck further includes an evaporator, which is connected to the pressure tank through the fuel supply pipeline, and the evaporator includes a heating chamber and an evaporation chamber; The heating chamber is used to heat the liquid hydrogen fuel in the pressure tank, so that the heated liquid hydrogen fuel evaporates to generate a hydrogen mixture, and then flows into the evaporation chamber; The evaporation chamber is used to obtain the gaseous hydrogen after performing gas-liquid separation on the hydrogen mixture; The liquid hydrogen transport tank truck further includes a heating control device, which is electrically connected to the evaporator and is used to control the opening and closing of the heating chamber. When the pressure value in the pressure tank is lower than the lower pressure limit, the heating control device controls the heating chamber to open. The lower pressure limit is higher than the air pressure outside the pressure tank. The liquid hydrogen transport tank truck also includes an emergency release device, which includes a temporary frame, an emergency ejection assembly, an emergency support shaft and an emergency wheel; The temporary frame is fixedly mounted on the bottom of the pressure tank, the emergency pop-up assembly is located inside the temporary frame, the emergency pop-up assembly includes a compressed gas tank, a cylinder and an emergency valve, and a spring assembly is provided at the connection portion between the emergency support shaft and the emergency pop-up assembly, and the emergency pop-up assembly, the emergency support shaft and the emergency wheel are sequentially connected; The emergency pop-up assembly is used to control the descent of the emergency support shaft and the emergency wheel in an emergency situation. The main control module starts the disengagement program after receiving the start signal triggered by the driver. The main control module continuously sends an electrical signal to the emergency pop-up assembly to instruct the opening of the emergency valve. After the emergency valve is opened, the spring assembly pops up quickly. At the same time, with the assistance of the ground impact force provided by the compressed gas tank and the cylinder, the spring assembly pops up quickly, so that the emergency wheel connected to the emergency support shaft quickly contacts the ground.

2. The liquid hydrogen transport tank truck according to claim 1, characterized in that: The fuel supply pipeline includes a gas input end and a gas output end, and the pressure tank includes a gas outlet; The gas input end is connected to the gas outlet; The gas output end is connected to the hydrogen fuel cell.

3. The liquid hydrogen transport tank truck according to claim 1, characterized in that: The pressure tank is provided with at least one pressure monitoring element; The pressure monitoring element is used to monitor the pressure state of the pressure tank and obtain at least one pressure monitoring data according to the pressure state.

4. The liquid hydrogen transport tank truck according to claim 3, characterized in that: The liquid hydrogen transport tank truck also includes a pressure monitoring display; The pressure monitoring display is used to display the pressure monitoring data.

5. The liquid hydrogen transport tank truck according to claim 4, characterized in that: The liquid hydrogen transport tank truck also includes a storage monitoring module and a drive monitoring module; The storage monitoring module is used to obtain the pressure monitoring data; The drive monitoring module is used to monitor the operating status of the liquid hydrogen transport tank truck and generate operating monitoring data according to the operating status.

6. The liquid hydrogen transport tank truck according to claim 5, characterized in that: The liquid hydrogen transport tank truck also includes a general monitoring module; The overall monitoring module is used to monitor the heating control device according to the pressure monitoring data, and / or to monitor the operating status of the liquid hydrogen transport tank truck according to the operating monitoring data.

7. The liquid hydrogen transport tank truck according to claim 5, characterized in that: The liquid hydrogen transport tank truck also includes a general monitoring module; The general monitoring module is used to send the pressure monitoring data and the operation monitoring data to the base control center; The general monitoring module is used to receive the reference instructions returned by the base control center, and monitor the operating status of the heating control equipment and the liquid hydrogen transport tank truck according to the reference instructions.

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