Liquid hydrogen transfer, mobile hydrogenation and transfer injection tank truck

Abstract

The present application relates to a kind of liquid hydrogen transport, mobile hydrogenation and transfer injection tank truck, including liquid hydrogen tank truck and being arranged in the exhaust path, self-boosting circuit, liquid hydrogen filling path and liquid hydrogen delivery path of the liquid hydrogen tank truck, the liquid hydrogen transport, mobile hydrogenation and transfer injection tank truck can make up the reality of the deficiency of current liquid hydrogen hydrogenation station, liquid hydrogen transport, mobile liquid hydrogen filling, tank truck between transfer injection can be carried out, liquid hydrogen hydrogenation station fluctuation liquid hydrogen demand can also be coped with, also can be used as mobile liquid hydrogen hydrogenation station, satisfy the demand of multiple situations when liquid hydrogen transport, the cold energy of the evaporative cold hydrogen gas generated in the process can also be recovered by the liquid hydrogen transport, mobile hydrogenation and transfer injection tank truck, reduce resource waste.

Description

Technical Field

[0001] This invention relates to the field of liquid hydrogen storage and transportation technology, and in particular to a liquid hydrogen transfer, mobile hydrogen refueling and transshipment tanker truck. Background Technology

[0002] Liquid hydrogen tank trucks are the primary means of transporting liquid hydrogen between liquid hydrogen plants and refueling stations. A liquid hydrogen plant needs to be equipped with multiple liquid hydrogen tank trucks, and a single tank truck, depending on its capacity, can supply liquid hydrogen to multiple refueling stations. The process involves first distributing the liquid hydrogen produced at the plant and stored in large liquid hydrogen storage tanks to the tank trucks, which then distribute the liquid hydrogen to the storage tanks at the refueling stations.

[0003] Whether it's a traditional internal combustion engine vehicle or a new energy vehicle (such as an electric vehicle or CNG vehicle), there may be situations where the power source runs out and the distance to a refueling station (gas station, charging station, or CNG station) is far. The usual method is to tow the vehicle to a refueling station or refuel on-site. For liquid hydrogen-powered vehicles, mobile refueling methods can also be used to replenish their energy. However, currently, the number of liquid hydrogen refueling stations is relatively small. Therefore, using mobile liquid hydrogen tank trucks for refueling (or having liquid hydrogen vehicles refuel while the tank trucks remain stationary) to compensate for the shortage of liquid hydrogen refueling stations can promote the development of liquid hydrogen-powered vehicles.

[0004] During the operation of liquid hydrogen tanker trucks, transfers between tankers are sometimes necessary. For example, liquid hydrogen refueling stations are open to users, and usage fluctuates, which may result in a situation where a tanker has excess liquid hydrogen but not enough to meet the needs of a single refueling station. To reduce liquid hydrogen transportation costs, transfers between tankers are required. Transfers are also necessary when a tanker truck malfunctions. However, currently, there is a lack of liquid hydrogen transfer, mobile refueling, and refueling tanker trucks suitable for multiple application scenarios, failing to meet existing liquid hydrogen storage and transportation needs. Summary of the Invention

[0005] The purpose of this invention is to provide a liquid hydrogen transport, mobile hydrogen refueling and transfer tanker truck that can transport liquid hydrogen, refuel mobilely, and transfer between tankers, to cope with fluctuating liquid hydrogen demand at liquid hydrogen refueling stations and meet the needs of various situations during liquid hydrogen transport.

[0006] This invention provides a liquid hydrogen transfer, mobile hydrogen refueling, and transfer tanker truck, comprising a liquid hydrogen tanker truck and an exhaust path, a self-pressurization circuit, a liquid hydrogen refueling path, and a liquid hydrogen delivery path, all disposed within the liquid hydrogen tanker truck. The self-pressurization circuit utilizes external heat to heat the liquid hydrogen in the liquid hydrogen tanker truck, increasing the liquid hydrogen pressure and establishing a pressure difference between the liquid hydrogen tanker truck and the container being refueled, allowing liquid hydrogen to flow from the liquid hydrogen tanker truck into the container being refueled. The liquid hydrogen refueling path connects to a liquid hydrogen plant or liquid hydrogen storage tank for refueling the liquid hydrogen tanker truck. The liquid hydrogen delivery path transfers the liquid hydrogen from the liquid hydrogen tanker truck to one or more of a liquid hydrogen storage tank, a liquid hydrogen tanker truck, or a liquid hydrogen vehicle. The exhaust path discharges the evaporated cold hydrogen gas generated during the liquid hydrogen transfer, mobile hydrogen refueling, and liquid hydrogen transfer process, and recovers the cold energy of the evaporated cold hydrogen gas.

[0007] In one embodiment of the present invention, the liquid hydrogen tanker truck includes a vehicle body and a liquid hydrogen tank disposed on the vehicle body. The liquid hydrogen tank includes an inner tank, an outer tank, and a sandwich layer disposed between the inner tank and the outer tank. The sandwich layer is configured as a high vacuum environment and is provided with a heat exchange plate and insulation material. The liquid hydrogen transfer, mobile hydrogen refueling, and injection tanker truck includes a first interface, a second interface, and a third interface for connecting to a hydrogen recovery or discharge pipeline, a fourth interface disposed on the top of the liquid hydrogen tank, and a first valve, a second valve, and a third valve disposed on the exhaust path. The exhaust path includes a first exhaust path, a second exhaust path, and a third exhaust path. The first exhaust path is sequentially connected to the fourth interface, the second valve, the heat exchange plate, and the first interface. The second exhaust path is sequentially connected to the second interface, the first valve, the heat exchange plate, and the first interface. The third exhaust path is sequentially connected to the fourth interface, the third valve, and the third interface.

[0008] In one embodiment of the present invention, the liquid hydrogen transfer, mobile hydrogen refueling and injection tanker further includes a fifth interface disposed at the bottom of the liquid hydrogen tank and a fourth valve connected to the second valve, the third valve and the fourth interface, and the self-pressurization circuit is sequentially connected to the fifth interface, the fourth valve and the fourth interface.

[0009] In one embodiment of the present invention, the heat exchange plate exchanges heat with the vacuum multilayer insulation material or cold screen in the interlayer, and a double-layer vacuum insulation pipe is used between the fifth interface and the fourth valve, and between the fourth interface and the second valve and the third valve.

[0010] In one embodiment of the present invention, the liquid hydrogen refueling route includes an upper refueling route and a lower refueling route. The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker further includes a sixth interface for connecting to a liquid hydrogen plant or liquid hydrogen storage tank, a seventh interface disposed at the top of the liquid hydrogen tank, an eighth interface disposed at the bottom of the liquid hydrogen tank, a fifth valve connecting the sixth interface and the seventh interface, and a sixth valve connecting the sixth interface and the eighth interface. The upper refueling route is sequentially connected to the sixth interface, the fifth valve and the seventh interface, and the lower refueling route is sequentially connected to the sixth interface, the sixth valve and the eighth interface.

[0011] In one embodiment of the present invention, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck further includes a seventh valve connected to the sixth interface, the fifth valve and the sixth valve.

[0012] In one embodiment of the present invention, the liquid hydrogen delivery path includes a high-flow-rate hydrogen delivery path and a low-flow-rate hydrogen delivery path. The high-flow-rate hydrogen delivery path is used to transfer liquid hydrogen from the liquid hydrogen tank to a liquid hydrogen storage tank or a liquid hydrogen tank truck. The low-flow-rate hydrogen delivery path is used for mobile refueling of liquid hydrogen vehicles. The high-flow-rate hydrogen delivery path and the low-flow-rate hydrogen delivery path refuel liquid hydrogen by means of self-pressurization and / or by means of a delivery pump.

[0013] In one embodiment of the present invention, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck further includes a ninth interface and a tenth interface, both disposed on the liquid hydrogen tank, an eleventh interface for connecting to the liquid hydrogen storage tank or the liquid hydrogen tanker truck, a twelfth interface for connecting to the liquid hydrogen vehicle, an eighth valve connected to the ninth interface and the eleventh interface, and a ninth valve connected to the tenth interface and the twelfth interface; the high-flow-rate hydrogen transport path includes a first high-flow-rate hydrogen transport path sequentially connected to the ninth interface, the eighth valve and the eleventh interface, and the low-flow-rate hydrogen transport path includes a first low-flow-rate hydrogen transport path sequentially connected to the tenth interface, the ninth valve and the twelfth interface.

[0014] In one embodiment of the present invention, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck further includes a thirteenth interface for connecting to a liquid hydrogen storage tank or liquid hydrogen tanker truck, a fourteenth interface for connecting to a liquid hydrogen vehicle, a first transfer pump connected to the thirteenth interface, a tenth valve disposed between the first transfer pump and the ninth interface, a second transfer pump connected to the fourteenth interface, and an eleventh valve disposed between the second transfer pump and the tenth interface; the high-flow-rate hydrogen transfer path includes a second high-flow-rate hydrogen transfer path sequentially connecting the ninth interface, the tenth valve, the first transfer pump and the thirteenth interface; the low-flow-rate hydrogen transfer path includes a second low-flow-rate hydrogen transfer path sequentially connecting the tenth interface, the eleventh valve, the second transfer pump and the fourteenth interface.

[0015] In one embodiment of the present invention, the first delivery pump and the second delivery pump are external liquid hydrogen pumps or internal submersible pumps.

[0016] The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck of the present invention is designed with an exhaust path, a self-pressurization circuit, a liquid hydrogen refueling path, and a liquid hydrogen transportation path. It can make up for the current shortage of liquid hydrogen refueling stations and can carry out liquid hydrogen transfer, mobile liquid hydrogen refueling, and transfer between tankers. It can cope with the fluctuating liquid hydrogen demand of liquid hydrogen refueling stations and can also serve as a mobile liquid hydrogen refueling station to meet the needs of various situations during liquid hydrogen transfer. At the same time, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck can also recover the cold energy of the evaporated cold hydrogen generated in these processes, reducing resource waste.

[0017] The further objects and advantages of the invention will become fully apparent from the following description and accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the liquid hydrogen transfer, mobile hydrogenation and transfer tanker truck according to a preferred embodiment of the present invention, wherein the arrow direction represents the fluid flow direction.

[0019] Reference numerals: 100 Liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck; 10 Liquid hydrogen tanker truck; 11 Vehicle body; 12 Liquid hydrogen tank; 121 Inner tank; 122 Outer tank; 123 Jacket; 124 Heat exchange plate; 20 Exhaust path; 21 First exhaust path; 22 Second exhaust path; 23 Third exhaust path; 30 Self-pressurization circuit; 40 Liquid hydrogen refueling path; 41 Upper refueling path; 42 Lower refueling path; 50 Liquid hydrogen conveying path; 51 First high-flow-rate hydrogen conveying path; 52 Second high-flow-rate hydrogen conveying path; 53 First low-flow-rate hydrogen conveying path; 54 Second low-flow-rate hydrogen conveying path; 61 First interface. Second interface 62; Third interface 63; Fourth interface 64; Fifth interface 65; Sixth interface 66; Seventh interface 67; Eighth interface 68; Ninth interface 69; Tenth interface 70; Eleventh interface 71; Twelfth interface 72; Thirteenth interface 73; Fourteenth interface 74; First valve 81; Second valve 82; Third valve 83; Fourth valve 84; Fifth valve 85; Sixth valve 86; Seventh valve 87; Eighth valve 88; Ninth valve 89; Tenth valve 90; Eleventh valve 91; First transfer pump 101; Second transfer pump 102. Detailed Implementation

[0020] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0021] Those skilled in the art should understand that, in the disclosure of this invention, the terms "vertical," "horizontal," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] This invention aims to provide a liquid hydrogen transport, mobile hydrogen refueling, and transfer tanker truck suitable for multiple application scenarios. It features abundant interfaces to meet the needs of various scenarios and compensate for the current shortage of liquid hydrogen refueling stations. Figure 1 As shown, the specific structure of a liquid hydrogen transport, mobile hydrogenation and transfer tanker truck 100 according to a preferred embodiment of the present invention is illustrated.

[0025] Specifically, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tank truck 100 includes a liquid hydrogen tank truck 10 and an exhaust passage 20, a self-pressurizing circuit 30, a liquid hydrogen refueling passage 40, and a liquid hydrogen delivery passage 50, all installed in the liquid hydrogen tank truck 10. The self-pressurizing circuit 30 is used to heat the liquid hydrogen in the liquid hydrogen tank truck 10 using external heat, thereby increasing the liquid hydrogen pressure in the liquid hydrogen tank truck 10 and establishing a pressure difference between the liquid hydrogen tank truck 10 and the refueling container, allowing liquid hydrogen to flow from the liquid hydrogen tank truck 10. The liquid hydrogen is poured into the container to be filled; the liquid hydrogen filling line 40 is used to connect to a liquid hydrogen plant or liquid hydrogen storage tank to fill the liquid hydrogen tanker truck 10 with liquid hydrogen; the liquid hydrogen transport line 50 is used to transfer the liquid hydrogen from the liquid hydrogen tanker truck 10 to one or more of a liquid hydrogen storage tank, liquid hydrogen tanker truck, or liquid hydrogen vehicle; the exhaust line 20 is used to discharge the evaporated cold hydrogen gas generated by the liquid hydrogen transfer, mobile hydrogen filling and transfer tanker truck 100 during the liquid hydrogen transfer, mobile hydrogen filling and liquid hydrogen transfer process, and for the recovery of the cold energy of the evaporated cold hydrogen gas.

[0026] Specifically, the liquid hydrogen tanker truck 10 includes a vehicle body 11 and a liquid hydrogen tank 12 mounted on the vehicle body 11. The liquid hydrogen tank 12 includes an inner tank 121, an outer tank 122, and an interlayer 123 disposed between the inner tank 121 and the outer tank 122. The interlayer 123 is provided with a heat exchange plate 124 and a heat insulation material. The heat insulation material is a vacuum multilayer heat insulation material. The interlayer 123 adopts vacuum multilayer heat insulation and other methods to reduce heat leakage. A cold screen can also be added to the interlayer 123 to further reduce heat leakage and lower the evaporation rate.

[0027] In other words, the interlayer 123 may be provided with vacuum multilayer insulation material or a cold screen, and the heat exchange plate 124 exchanges heat with the vacuum multilayer insulation material or the cold and hot material in the interlayer 123. The present invention does not limit this.

[0028] Specifically, the exhaust path 20 is a pipeline for discharging evaporated cold hydrogen gas from the tank due to tank heat leakage, filling losses, etc. In this embodiment, the liquid hydrogen transfer, mobile hydrogen filling and transfer tank truck 100 includes a first interface 61, a second interface 62 and a third interface 63 for connection to hydrogen recovery or discharge pipelines, a fourth interface 64 disposed on the top of the liquid hydrogen tank 12, and a first valve 81, a second valve 82 and a third valve 83 disposed on the exhaust path 20; the exhaust path 20 includes a first exhaust path 21, a second exhaust path 22 and a third exhaust path 23, the first exhaust path 21 being sequentially connected to the fourth interface 64, the second valve 82, the heat exchange plate 124 and the first interface 61; the second exhaust path 22 being sequentially connected to the second interface 62, the first valve 81, the heat exchange plate 124 and the first interface 61; the third exhaust path 23 being sequentially connected to the fourth interface 64, the third valve 83 and the third interface 63.

[0029] When liquid hydrogen is added to the liquid hydrogen tank 12 at the liquid hydrogen plant, the evaporated cold hydrogen gas generated during the addition process returns to the liquid hydrogen plant through the third exhaust path 23. After leaving the liquid hydrogen plant, in order to utilize the cooling capacity of the evaporated cold hydrogen gas, the evaporated cold hydrogen gas in the liquid hydrogen tank 12 is released through the fourth interface 64, the first exhaust path 21, the second valve 82, and the third exhaust path 22, and then enters the interlayer 123 between the inner tank 121 and the outer tank 122, where it exchanges heat with the multi-layer insulation material or cold shield in the interlayer 123. After heat exchange, the hydrogen gas is discharged according to hydrogen emission requirements, or enters the power generation module to generate electricity, thereby realizing the recovery and utilization of the cooling capacity of the evaporated cold hydrogen gas. That is to say, the hydrogen gas after heat exchange can be discharged through the first interface 61 into the discharge pipeline or enter the recovery pipeline through the first interface 61, and then enter the power generation module to generate electricity. This invention does not limit this.

[0030] When the liquid hydrogen tank 12 transfers liquid hydrogen to other storage tanks, the evaporated cold hydrogen gas generated during the transfer process is recovered through the second interface 62, the first valve 81, and the second exhaust path 22. It is worth mentioning that the heat exchange plate 124 can be filled with a secondary hydrogen-positive hydrogen catalyst to recover the cold energy generated during the conversion of secondary hydrogen to positive hydrogen.

[0031] Specifically, the self-pressurization circuit 30 heats a portion of the liquid hydrogen using external heat, increasing the liquid hydrogen pressure in the tank and establishing a pressure difference between the liquid hydrogen tank 12 and the container being filled. This allows liquid hydrogen to flow from the liquid hydrogen tank 12 into the container being filled. In other words, the liquid hydrogen transfer, mobile hydrogen filling, and refilling tanker truck 100 achieves self-pressurized liquid hydrogen filling via the self-pressurization circuit 30.

[0032] More specifically, in this embodiment, the liquid hydrogen transfer, mobile hydrogen refueling and injection tanker 100 further includes a fifth interface 65 disposed at the bottom of the liquid hydrogen tank 12 and a fourth valve 84 connected to the second valve 82, the third valve 83 and the fourth interface 64, and the self-pressurization circuit 30 is sequentially connected to the fifth interface 65, the fourth valve 84 and the fourth interface 64.

[0033] Specifically, in the self-pressurizing circuit 30, double-layer vacuum-insulated pipes are used between the fifth interface 65 and the fourth valve 84, and between the fourth interface 64 and the second valve 82 and the third valve 83, while the remaining pipes use single-layer pipes. This invention does not impose any limitations on this. The purpose of using double-layer vacuum-insulated pipes is to reduce heat leakage and lower the hydrogen evaporation rate.

[0034] Furthermore, the liquid hydrogen filling line 40 includes an upper filling line 41 and a lower filling line 42, which are used to fill the liquid hydrogen tank 12 with liquid hydrogen.

[0035] Specifically, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck 100 also includes a sixth interface 66 for connecting to a liquid hydrogen plant or liquid hydrogen storage tank, a seventh interface 67 located at the top of the liquid hydrogen tank 12, an eighth interface 68 located at the bottom of the liquid hydrogen tank 12, a fifth valve 85 connecting the sixth interface 66 and the seventh interface 67, and a sixth valve 86 connecting the sixth interface 66 and the eighth interface 68. The upper refueling path 41 is sequentially connected to the sixth interface 66, the fifth valve 85, and the seventh interface 67, and the lower refueling path 42 is sequentially connected to the sixth interface 66, the sixth valve 86, and the eighth interface 68.

[0036] It is worth mentioning that the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck 100 also includes a seventh valve 87 connected to the sixth interface 66, the fifth valve 85, and the sixth valve 86.

[0037] Furthermore, the liquid hydrogen delivery path 50 includes a high-flow-rate hydrogen delivery path and a low-flow-rate hydrogen delivery path. The high-flow-rate hydrogen delivery path is used to transfer liquid hydrogen in the liquid hydrogen tank 12 to a liquid hydrogen storage tank or liquid hydrogen tank truck. The low-flow-rate hydrogen delivery path is used for mobile refueling of liquid hydrogen vehicles. The high-flow-rate hydrogen delivery path and the low-flow-rate hydrogen delivery path refuel liquid hydrogen through the self-pressurization circuit 30 and / or through the delivery pump.

[0038] The reason for arranging two liquid hydrogen refueling loops in this invention is that: (1) The flow rate of liquid hydrogen tanker trucks transferring liquid hydrogen to liquid hydrogen storage tanks or tanks will theoretically be greater than that of liquid hydrogen vehicles, so different pipelines and liquid hydrogen pumps need to be configured; (2) When liquid hydrogen vehicles are refueled, the hydrogen gas evaporated during the refueling process generally needs to be returned to the liquid hydrogen tanker truck 10.

[0039] like Figure 1 As shown, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck 100 also includes a ninth interface 69 and a tenth interface 70, both located on the liquid hydrogen tank 12; an eleventh interface 71 for connecting to a liquid hydrogen storage tank or liquid hydrogen tanker truck; a twelfth interface 72 for connecting to a liquid hydrogen vehicle; an eighth valve 88 connected to the ninth interface 69 and the eleventh interface 71; and a ninth valve 89 connected to the tenth interface 70 and the twelfth interface 72. The high-flow-rate hydrogen transport path includes a first high-flow-rate hydrogen transport path 51 that sequentially connects the ninth interface 69, the eighth valve 88, and the eleventh interface 71. The low-flow-rate hydrogen transport path includes a first low-flow-rate hydrogen transport path 53 that sequentially connects the tenth interface 70, the ninth valve 89, and the twelfth interface 72.

[0040] Specifically, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck 100 further includes a thirteenth interface 73 for connecting to a liquid hydrogen storage tank or liquid hydrogen tanker truck, a fourteenth interface 74 for connecting to a liquid hydrogen vehicle, a first transfer pump 101 connected to the thirteenth interface 73, a tenth valve 90 disposed between the first transfer pump 101 and the ninth interface 69, a second transfer pump 102 connected to the fourteenth interface 74, and an eleventh valve 91 disposed between the second transfer pump 102 and the tenth interface 70; the high-flow-rate hydrogen delivery path includes a second high-flow-rate hydrogen delivery path 52 that sequentially connects the ninth interface 69, the tenth valve 90, the first transfer pump 101 and the thirteenth interface 73; the low-flow-rate hydrogen delivery path includes a second low-flow-rate hydrogen delivery path 54 that sequentially connects the tenth interface 70, the eleventh valve 91, the second transfer pump 102 and the fourteenth interface 74.

[0041] It is worth mentioning that the first transfer pump 101 and the second transfer pump 102 are external liquid hydrogen pumps or internal submersible pumps.

[0042] It is understood that the high-flow-rate hydrogen delivery path and the low-flow-rate hydrogen delivery path can achieve self-pressurized liquid hydrogen filling by using the self-pressurization circuit 30, and / or by filling liquid hydrogen through a delivery pump. That is to say, the high-flow-rate hydrogen delivery path and the low-flow-rate hydrogen delivery path can use a single delivery pipeline structure to achieve liquid hydrogen filling, or they can use two or more delivery pipeline structures to achieve liquid hydrogen filling. Delivery pumps can be installed on the delivery pipelines, or they can be absent. This invention does not impose any restrictions on this.

[0043] In other words, depending on the actual situation, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tank truck 100 can use a self-pressurizing method to establish a pressure difference for liquid hydrogen transfer instead of using a transfer pump. Moreover, the transfer pump can be an external hydraulic pump or a submersible pump built into the liquid hydrogen tank 12. The power source for the transfer pump can come from the tank truck's engine, hydrogen emissions for power generation, or a combination of both. The specific power supply method is determined according to the tank truck capacity, evaporation rate, etc., and this invention does not impose any restrictions on this.

[0044] It should be understood that, Figure 1 The structure of the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck 100 shown is to illustrate the basic structure for the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck 100 to perform its functions. The specific design must also meet the requirements of the corresponding standards. For example, the piping requirements shown in the figure are determined according to the flow rate, flow velocity requirements, pressure, etc., and this invention does not impose any restrictions on them.

[0045] The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck 100 includes the following various operating conditions and corresponding workflows:

[0046] 1. At the liquid hydrogen plant, liquid hydrogen is added to the liquid hydrogen transfer, mobile hydrogen refueling and injection tanker 100 through a large liquid hydrogen storage tank. The evaporated hydrogen during the injection process is stored or discharged into the liquid hydrogen plant.

[0047] First of all, Figure 1 With all valves closed, connect the sixth port 66 to the liquid hydrogen storage tank of the liquid hydrogen plant, and connect the third port 63 to the hydrogen recovery or discharge pipeline of the liquid hydrogen plant.

[0048] Next, open the third valve 83, the seventh valve 87, the fifth valve 85 (or the sixth valve 86) to add liquid hydrogen to the liquid hydrogen tank 12 of the liquid hydrogen tanker truck 10.

[0049] Finally, after refueling is completed, the seventh valve 87, the fifth valve 85 (or the sixth valve 86), and the third valve 83 are closed to complete the liquid hydrogen refueling process for the liquid hydrogen transfer, mobile hydrogen refueling, and transfer tanker truck 100. When the gas pressure inside the tank reaches the set pressure, valve 63 is closed.

[0050] 2. Liquid hydrogen is added to the liquid hydrogen storage tank of the hydrogen refueling station via the liquid hydrogen transfer, mobile hydrogen refueling, and transfer tanker truck 100, using either a self-pressurization method or a delivery pump. Evaporated hydrogen during the refueling process can be stored at the hydrogen refueling station or discharged.

[0051] 2.1 Self-pressurized liquid hydrogen refueling

[0052] First of all, Figure 1 With all valves closed, connect the eleventh port 71 of the liquid hydrogen tank 12 to the inlet of the liquid hydrogen storage tank of the liquid hydrogen refueling station, and connect the first port 61 to the hydrogen recovery or discharge pipeline of the liquid hydrogen refueling station.

[0053] Next, the fourth valve 84 is opened, and then the eighth valve 88 is opened. This utilizes the self-pressurization circuit 30 to create a pressure difference between the liquid hydrogen tank 12 and the liquid hydrogen storage tank of the liquid hydrogen refueling station, thereby allowing the liquid hydrogen in the liquid hydrogen tank 12 to flow into the liquid hydrogen storage tank of the liquid hydrogen refueling station, thus achieving self-pressurized liquid hydrogen refueling.

[0054] Finally, after the refueling is completed, the fourth valve 84 is closed, the second valve 82 is opened, and the eighth valve 88 is closed, thus completing the process of refueling the liquid hydrogen storage tank of the hydrogen refueling station by the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck 100.

[0055] 2.2 Add liquid hydrogen using the transfer pump (liquid hydrogen pump or submersible pump)

[0056] First of all, Figure 1 With all valves closed, connect the thirteenth interface 73 to the inlet of the liquid hydrogen storage tank of the liquid hydrogen refueling station, and connect the first interface 61 to the hydrogen recovery or discharge pipeline of the liquid hydrogen refueling station.

[0057] Next, the tenth valve 90 is opened, and the second valve 82 is opened or closed according to the pressure inside the liquid hydrogen tank 12 of the liquid hydrogen tanker truck 10, and the first delivery pump 101 is started. Specifically, when the pressure inside the liquid hydrogen tank 12 is higher than its set pressure, the second valve 82 is opened to release pressure, and vice versa.

[0058] Finally, after refueling is completed, the second valve 82 is opened or closed and the tenth valve 90 is closed, depending on the pressure inside the liquid hydrogen tank 12 of the liquid hydrogen tanker truck 10.

[0059] 3. Liquid hydrogen is transferred between the liquid hydrogen tanks 12 of the two liquid hydrogen transfer, mobile hydrogen refueling and transfer tank trucks 100.

[0060] The process of adding liquid hydrogen to the liquid hydrogen storage tank of the hydrogen refueling station via the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck 100 is basically the same as that at the liquid hydrogen refueling station.

[0061] The difference is that both of the liquid hydrogen transfer, mobile hydrogen refueling and transfer tank trucks 100 have exhaust channels and can exhaust gases.

[0062] 4. The liquid hydrogen transfer, mobile hydrogen refueling and injection tanker truck 100 is used as a mobile liquid hydrogen refueling station, and liquid hydrogen can be injected using a self-pressurization method or a delivery pump. The evaporated hydrogen gas during the injection process is cooled and discharged after passing through the heat exchange plate 124 of the liquid hydrogen tanker truck.

[0063] 4.1 Self-pressurized liquid hydrogen refueling

[0064] First of all, Figure 1 With all valves closed, connect the twelfth interface 72 to the inlet of the liquid hydrogen storage tank of the vehicle being refueled, and connect the second interface 62 to the exhaust port of the liquid hydrogen storage tank of the vehicle being refueled.

[0065] Next, the fourth valve 84, the ninth valve 89, and the first valve 81 are opened to carry out the self-pressurization filling process.

[0066] Finally, after the filling is completed, close the fourth valve 84 and the first valve 81, open the second valve 82, and close the ninth valve 89.

[0067] 4.2 Add liquid hydrogen using the transfer pump (liquid hydrogen pump or submersible pump).

[0068] First of all, Figure 1 With all valves closed, connect the fourteenth port 74 to the inlet of the liquid hydrogen storage tank of the vehicle being refueled, and connect the second port 62 to the exhaust port of the liquid hydrogen storage tank of the vehicle being refueled.

[0069] Next, the eleventh valve 91 is opened, and the second valve 82 is opened or closed according to the pressure of the liquid hydrogen tank 12 of the liquid hydrogen tanker truck 10, and the second delivery pump 102 is started.

[0070] Finally, after refueling is completed, the second valve 82 is opened or closed and the eleventh valve 91 is closed, depending on the pressure of the liquid hydrogen tank 12 of the liquid hydrogen tanker truck 10.

[0071] 5. During non-filling processes, adjust the opening and closing of the second valve 82 according to the pressure of the liquid hydrogen tank 12 of the liquid hydrogen tanker truck 10.

[0072] It is understood that the present invention provides a liquid hydrogen tanker truck that can adapt to multiple application scenarios. The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck is designed with an exhaust path, a self-pressurization circuit, a liquid hydrogen refueling path, and a liquid hydrogen transportation path. It can make up for the current shortage of liquid hydrogen refueling stations and can carry out liquid hydrogen transfer, mobile liquid hydrogen refueling, and transfer between tankers. It can cope with the fluctuating liquid hydrogen demand of liquid hydrogen refueling stations and can also serve as a mobile liquid hydrogen refueling station to meet the needs of various situations during liquid hydrogen transfer. At the same time, the liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck can also recover the cold energy of the evaporated cold hydrogen generated in these processes, reducing resource waste.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above embodiments merely illustrate preferred implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention should be determined by the appended claims.

Claims

1. A liquid hydrogen transport, mobile hydrogen refueling and transfer tanker truck, characterized in that, The system includes a liquid hydrogen tanker truck and an exhaust path, a self-pressurization circuit, a liquid hydrogen filling path, and a liquid hydrogen delivery path, all installed on the liquid hydrogen tanker truck. The self-pressurization circuit uses external heat to heat the liquid hydrogen in the tanker truck, increasing the liquid hydrogen pressure and establishing a pressure difference between the tanker truck and the container being filled, allowing liquid hydrogen to flow from the tanker truck into the container. The liquid hydrogen filling path connects to a liquid hydrogen plant or storage tank to fill the tanker truck with liquid hydrogen. The liquid hydrogen delivery path transfers the liquid hydrogen from the tanker truck to one or more liquid hydrogen storage tanks, liquid hydrogen tankers, or liquid hydrogen vehicles. The exhaust path discharges the evaporated cold hydrogen gas generated during the liquid hydrogen transfer, mobile refueling, and liquid hydrogen filling processes, and also recovers the cold energy of the evaporated cold hydrogen gas. The liquid hydrogen delivery route includes a high-flow-rate hydrogen delivery route and a low-flow-rate hydrogen delivery route. The high-flow-rate hydrogen delivery route is used to transfer liquid hydrogen from the liquid hydrogen tank to a liquid hydrogen storage tank or a liquid hydrogen tank truck. The low-flow-rate hydrogen delivery route is used for mobile refueling of liquid hydrogen vehicles. The liquid hydrogen tanker truck includes a vehicle body and a liquid hydrogen tank mounted on the vehicle body. The liquid hydrogen tank includes an inner tank, an outer tank, and a sandwich layer between the inner and outer tanks. The sandwich layer is configured as a high-vacuum environment and contains a heat exchange plate and insulation material. The liquid hydrogen transfer, mobile hydrogen refueling, and injection tanker truck includes a first interface, a second interface, and a third interface for connecting to hydrogen recovery or emission pipelines, a fourth interface located at the top of the liquid hydrogen tank, and a first valve, a second valve, and a third valve located on the exhaust path. The exhaust path includes a first exhaust path, a second exhaust path, and a third exhaust path. The first exhaust path is sequentially connected to the fourth interface, the second valve, the heat exchange plate, and the first interface. The second exhaust path is sequentially connected to the second interface, the first valve, the heat exchange plate, and the first interface. The third exhaust path is sequentially connected to the fourth interface, the third valve, and the third interface. The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker also includes a fifth interface located at the bottom of the liquid hydrogen tank and a fourth valve connected to the second valve, the third valve and the fourth interface. The self-pressurization circuit is sequentially connected to the fifth interface, the fourth valve and the fourth interface.

2. The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck according to claim 1, characterized in that, The liquid hydrogen refueling route includes an upper refueling route and a lower refueling route. The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker also includes a sixth interface for connecting to a liquid hydrogen plant or liquid hydrogen storage tank, a seventh interface located at the top of the liquid hydrogen tank, an eighth interface located at the bottom of the liquid hydrogen tank, a fifth valve connecting the sixth interface and the seventh interface, and a sixth valve connecting the sixth interface and the eighth interface. The upper refueling route is sequentially connected to the sixth interface, the fifth valve and the seventh interface, and the lower refueling route is sequentially connected to the sixth interface, the sixth valve and the eighth interface.

3. The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck according to claim 2, characterized in that, The heat exchange plate exchanges heat with the vacuum multilayer insulation material or cold screen in the interlayer. The pipes of the exhaust path, the self-pressurization circuit, the liquid hydrogen filling path and the liquid hydrogen delivery path are all double-layer vacuum pipes. A self-pressurization vaporizer is arranged between the eighth interface and the sixth valve.

4. The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck according to claim 3, characterized in that, The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker also includes a seventh valve connected to the sixth interface, the fifth valve and the sixth valve.

5. The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck according to claim 4, characterized in that, The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck also includes a ninth and a tenth interface, both located on the liquid hydrogen tank, an eleventh interface for connecting to the liquid hydrogen storage tank or liquid hydrogen tanker truck, a twelfth interface for connecting to the liquid hydrogen vehicle, an eighth valve connected to the ninth and eleventh interfaces, and a ninth valve connected to the tenth and twelfth interfaces; the high-flow-rate hydrogen transport path includes a first high-flow-rate hydrogen transport path sequentially connected to the ninth interface, the eighth valve, and the eleventh interface, and the low-flow-rate hydrogen transport path includes a first low-flow-rate hydrogen transport path sequentially connected to the tenth interface, the ninth valve, and the twelfth interface.

6. The liquid hydrogen transport, mobile hydrogen refueling and transfer tanker truck according to claim 5, characterized in that, The liquid hydrogen transfer, mobile hydrogen refueling and transfer tanker truck also includes a thirteenth interface for connecting to a liquid hydrogen storage tank or liquid hydrogen tanker truck, a fourteenth interface for connecting to a liquid hydrogen vehicle, a first transfer pump connected to the thirteenth interface, a tenth valve disposed between the first transfer pump and the ninth interface, a second transfer pump connected to the fourteenth interface, and an eleventh valve disposed between the second transfer pump and the tenth interface; the high-flow-rate hydrogen transfer path includes a second high-flow-rate hydrogen transfer path that sequentially connects the ninth interface, the tenth valve, the first transfer pump and the thirteenth interface; the low-flow-rate hydrogen transfer path includes a second low-flow-rate hydrogen transfer path that sequentially connects the tenth interface, the eleventh valve, the second transfer pump and the fourteenth interface.

7. The liquid hydrogen transport, mobile hydrogen refueling and transfer tanker truck according to claim 6, characterized in that, The first and second delivery pumps are external liquid hydrogen pumps or internal submersible pumps.

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