Transfer injection device for liquid hydrogen tank car and liquid hydrogen tank car

Abstract

The utility model discloses a transfer injection device for liquid hydrogen tank car and liquid hydrogen tank car, transfer injection device includes: liquid hydrogen pipeline, gaseous hydrogen pipeline, control valve, pressure sensor and controller, liquid hydrogen pipeline, gaseous hydrogen pipeline is suitable for communicating between liquid hydrogen tank car and liquid hydrogen storage tank, liquid hydrogen pipeline and gaseous hydrogen pipeline are both equipped with control valve, pressure sensor and controller, liquid hydrogen pipeline is suitable for communicating with liquid hydrogen tank car and liquid hydrogen storage tank. The liquid hydrogen pipeline and the gas hydrogen pipeline are each provided with a pressure sensor, the pressure sensors are used for obtaining pressure values in the liquid hydrogen pipeline and the gas hydrogen pipeline, the controller is in communication connection with the control valve and the pressure sensors, and the controller can be used for controlling on-off of the control valve according to the pressure values. Therefore, the pressure value in the liquid hydrogen transfer injection process can be monitored in the whole process, when the pressure values in the liquid hydrogen pipeline and the gas hydrogen pipeline are abnormal, the control valve can be cut off in time, the transfer injection pipeline between the liquid hydrogen tank car and the liquid hydrogen storage tank can be cut off emergently, and safe operation in the transfer injection process can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid hydrogen transfer, in particular to a transfer device for a liquid hydrogen tank truck and the liquid hydrogen tank truck. Background Art

[0002] As a clean energy, hydrogen energy has broad application prospects. Liquid hydrogen, as an application form and carrier of hydrogen energy, is vigorously promoted for commercial use due to its efficient transportation and refueling.

[0003] The commercial use of liquid hydrogen generally includes several links: production, storage, transportation, refueling and use. The liquid hydrogen plant is the place where liquid hydrogen is produced and manufactured, the liquid hydrogen station is the place where terminal liquid hydrogen vehicles are refueled, and the liquid hydrogen tank truck is the transportation equipment that transports liquid hydrogen from the liquid hydrogen plant to the liquid hydrogen station. The main function of the liquid hydrogen tank truck is to fill liquid hydrogen from the liquid hydrogen tank truck into the liquid hydrogen storage tank of the liquid hydrogen station.

[0004] Compared with specific independent hydrogen usage environments such as aerospace, commercial liquid hydrogen systems operate intermittently, and liquid hydrogen tank trucks and liquid hydrogen storage tanks usually need to be frequently connected and disconnected, which greatly increases the danger during the liquid hydrogen transfer process. Therefore, how to ensure safe transfer between liquid hydrogen tank trucks and liquid hydrogen storage tanks is an important and urgent issue to be resolved. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first purpose of the utility model is to propose a transfer device for a liquid hydrogen tank truck, which can realize real-time monitoring of the pressure value in the liquid hydrogen pipeline and the gas hydrogen pipeline by setting a pressure sensor. At the same time, both the liquid hydrogen pipeline and the gas hydrogen pipeline are provided with a control valve, and the controller controls the on and off of the control valve according to the acquired pressure value. In this way, not only can the pressure value in the liquid hydrogen transfer process be monitored throughout the entire process, but also when the pressure value in the liquid hydrogen pipeline and the gas hydrogen pipeline is abnormal, the control valve can be cut off in time, and the transfer pipeline between the liquid hydrogen tank truck and the liquid hydrogen storage tank can be disconnected urgently, which is conducive to ensuring the safe operation of the transfer process.

[0006] The second purpose of the utility model is to provide a liquid hydrogen tank truck.

[0007] In order to achieve the above-mentioned object, the first embodiment of the utility model proposes a transfer device for a liquid hydrogen tank truck, comprising:

[0008] Liquid hydrogen pipeline and gas hydrogen pipeline, the liquid hydrogen pipeline and gas hydrogen pipeline are suitable for connecting between the liquid hydrogen tank truck and the liquid hydrogen storage tank;

[0009] Control valves and pressure sensors: both the liquid hydrogen pipeline and the gas hydrogen pipeline are equipped with control valves, and both the liquid hydrogen pipeline and the gas hydrogen pipeline are equipped with pressure sensors, which are used to obtain the pressure values ​​in the liquid hydrogen pipeline and the gas hydrogen pipeline;

[0010] The controller is communicatively connected with the control valve and the pressure sensor, and the controller can be used to control the on and off of the control valve according to the pressure value.

[0011] According to the transfer device of the embodiment of the utility model, by setting a pressure sensor, it is possible to realize real-time monitoring of the pressure value in the liquid hydrogen pipeline and the gas hydrogen pipeline. At the same time, both the liquid hydrogen pipeline and the gas hydrogen pipeline are provided with a control valve, and the controller controls the on and off of the control valve according to the acquired pressure value. Therefore, not only can the pressure value in the liquid hydrogen transfer process be monitored throughout the entire process, but also when the pressure value in the liquid hydrogen pipeline and the gas hydrogen pipeline is abnormal, the control valve can be cut off in time, and the transfer pipeline between the liquid hydrogen tank truck and the liquid hydrogen storage tank can be urgently disconnected, which is conducive to ensuring the safe operation of the transfer process.

[0012] According to some embodiments of the utility model, it also includes: a temperature sensor, the liquid hydrogen pipeline and the gas hydrogen pipeline are both provided with a temperature sensor, the temperature sensor is used to obtain the temperature value in the liquid hydrogen pipeline and the gas hydrogen pipeline;

[0013] The temperature sensor is connected to the controller for communication, and the controller can be used to control the on and off of the control valve according to the temperature value.

[0014] According to some embodiments of the utility model, it also includes: a hydrogen leakage detection device, the liquid hydrogen pipeline and the gas hydrogen pipeline are both provided with a hydrogen leakage detection device, and the hydrogen leakage detection device can be used to detect the hydrogen leakage detection results of the liquid hydrogen pipeline and the gas hydrogen pipeline;

[0015] The hydrogen leakage detection device is also connected to the controller for communication, and the controller can be used to control the on and off of the control valve according to the hydrogen leakage detection result.

[0016] According to some embodiments of the utility model, it also includes: a flow meter, the liquid hydrogen pipeline is provided with a flow meter, the flow meter is used to detect the hydrogen flow rate of the liquid hydrogen pipeline;

[0017] The flow meter is also connected to the controller for communication, and the controller can be used to control the on and off of the control valve according to the hydrogen flow rate.

[0018] According to some embodiments of the present invention, it further includes: an alarm device, the alarm device is communicatively connected with the controller, and the controller can be used to control the alarm device to alarm.

[0019] According to some embodiments of the present invention, it also includes: a display, the display is communicatively connected with the controller, and the controller can be used to control the display to display transfer data and fault information.

[0020] According to some embodiments of the utility model, it is characterized in that it also includes: a venting pipeline, and the venting pipeline is suitable for being connected to the liquid hydrogen pipeline and the gas hydrogen pipeline.

[0021] According to some embodiments of the present invention, the invention further comprises: a purge pipeline, wherein the purge pipeline is suitable for being connected to a hydrogen source or a nitrogen source, and the purge pipeline is also suitable for being connected to a liquid hydrogen pipeline.

[0022] According to some embodiments of the present invention, both the liquid hydrogen pipeline and the gas hydrogen pipeline have a gas measuring outlet.

[0023] In order to achieve the above-mentioned purpose, a second embodiment of the present invention proposes a liquid hydrogen tank truck, including the transfer device in the first embodiment.

[0024] According to the liquid hydrogen tanker of the embodiment of the utility model, by being provided with the above-mentioned transfer device, the pressure sensor can be set to realize real-time monitoring of the pressure value in the liquid hydrogen pipeline and the gas hydrogen pipeline. At the same time, both the liquid hydrogen pipeline and the gas hydrogen pipeline are provided with a control valve, and the controller controls the on-off of the control valve according to the acquired pressure value. In this way, not only can the pressure value in the liquid hydrogen transfer process be monitored throughout the whole process, but also when the pressure value in the liquid hydrogen pipeline and the gas hydrogen pipeline is abnormal, the control valve can be cut off in time, and the transfer pipeline between the liquid hydrogen tanker and the liquid hydrogen storage tank can be disconnected urgently, which is conducive to ensuring the safe operation of the transfer process.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the connection between a transfer device and a liquid hydrogen tank truck according to one embodiment of the utility model.

[0027] Reference numerals:

[0028] Transfer device 100;

[0029] Liquid hydrogen pipeline 1; first interface 11; third interface 12;

[0030] Gas hydrogen pipeline 2; second interface 21; fourth interface 22;

[0031] Purge pipeline 3; hydrogen source 31; nitrogen source 32;

[0032] Drainage line 4;

[0033] Temperature sensor 5; emergency shut-off valve 6; automatic control valve 7; flow meter 8; gas measuring outlet 9; first manual valve 10; second manual valve 101; third manual valve 102; fourth manual valve 103; fifth manual valve 104; sixth manual valve 105; seventh manual valve 106;

[0034] Liquid hydrogen tank truck 200; bypass pipeline 201. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] It should be noted that hydrogen energy, as a clean energy, has broad application prospects. Liquid hydrogen, as an application form and carrier of hydrogen energy, is vigorously promoted for commercial use due to its efficient transportation and refueling.

[0037] The commercial use of liquid hydrogen generally includes several links: production, storage, transportation, refueling and use. The liquid hydrogen plant is the place where liquid hydrogen is produced and manufactured, the liquid hydrogen station is the place where terminal liquid hydrogen vehicles are refueled, and the liquid hydrogen tank truck is the transportation equipment that transports liquid hydrogen from the liquid hydrogen plant to the liquid hydrogen station. The main function of the liquid hydrogen tank truck is to fill liquid hydrogen from the liquid hydrogen tank truck into the liquid hydrogen storage tank of the liquid hydrogen station.

[0038] Compared with specific independent hydrogen usage environments such as aerospace, commercial liquid hydrogen systems operate intermittently, and liquid hydrogen tank trucks and liquid hydrogen storage tanks usually need to be frequently connected and disconnected, which greatly increases the danger during the liquid hydrogen transfer process. Therefore, how to ensure safe transfer between liquid hydrogen tank trucks and liquid hydrogen storage tanks is an important and urgent issue to be resolved.

[0039] Based on this, the present application proposes a transfer device 100 for a liquid hydrogen tank truck 200. By setting a pressure sensor, real-time monitoring of the pressure values ​​in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 can be achieved. At the same time, both the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are provided with a control valve, and the controller controls the on and off of the control valve according to the acquired pressure value. In this way, not only can the pressure value in the liquid hydrogen transfer process be monitored throughout the entire process, but also when the pressure value in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 is abnormal, the control valve can be cut off in time, and the transfer pipeline between the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank can be disconnected urgently, which is conducive to ensuring the safe operation of the transfer process.

[0040] The following describes a transfer device 100 for a liquid hydrogen tank truck 200 and a liquid hydrogen tank truck 200 according to an embodiment of the present invention with reference to the accompanying drawings.

[0041] like Figure 1As shown, the transfer device 100 according to the embodiment of the first aspect of the utility model includes: a liquid hydrogen pipeline 1, a gas hydrogen pipeline 2, a control valve, a pressure sensor and a controller. The liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are suitable for being connected between the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank. The liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are both provided with a control valve, and the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are both provided with a pressure sensor. The pressure sensor is used to obtain the pressure value in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2. The controller is communicatively connected with the control valve and the pressure sensor. The controller can be used to control the on and off of the control valve according to the pressure value.

[0042] Specifically, if Figure 1 As shown, the liquid hydrogen pipeline 1 has a first interface 11 and a third interface 12, the first interface 11 is suitable for communicating with the infusion pipeline of the liquid hydrogen tank truck 200, and the third interface 12 is suitable for communicating with the infusion pipeline of the liquid hydrogen storage tank, and the gas hydrogen pipeline 2 has a second interface 21 and a fourth interface 22, the second interface 21 is suitable for communicating with the return air pipeline of the liquid hydrogen tank truck 200, and the fourth interface 22 is suitable for communicating with the return air pipeline of the liquid hydrogen storage tank. It can be understood that the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 connected between the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank constitute a liquid transfer and unloading circuit, and the liquid hydrogen of the liquid hydrogen tank truck 200 is transported to the liquid hydrogen storage tank through the liquid hydrogen pipeline 1, and the evaporated hydrogen in the liquid hydrogen storage tank can flow back to the liquid hydrogen tank truck 200 through the gas hydrogen pipeline 2 to achieve pressure balance.

[0043] As some embodiments of the utility model, the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are both provided with control valves. It should be noted that the control valves include an emergency shut-off valve 6 and an automatic control valve 7. For example, continue to refer to Figure 1 As shown, the liquid hydrogen pipeline 1 is provided with an emergency shut-off valve 6 and an automatic control valve 7, and the gas hydrogen pipeline 2 is provided with an emergency shut-off valve 6. The liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 may also be provided with more emergency shut-off valves 6 or automatic control valves 7 as required, and no specific limitation is made here.

[0044] As some embodiments of the present invention, the control valve is communicatively connected to the controller, and the communication connection includes but is not limited to a standard serial port connection, an Ethernet connection, a wireless connection, etc. The controller is used to control the on and off of the control valve. For example, the emergency shut-off valve 6 of the liquid hydrogen pipeline 1, the automatic control valve 7, and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 are all connected to the controller through a standard serial port. When it is necessary to use the transfer device 100 to transfer the liquid hydrogen in the liquid hydrogen tank truck 200 to the liquid hydrogen storage tank, the controller controls the emergency shut-off valve 6 of the liquid hydrogen pipeline 1, the automatic control valve 7, and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 to be in an open state, thereby realizing the automatic transfer of liquid hydrogen, that is, realizing the transfer function of the transfer device 100.

[0045] As some embodiments of the present invention, the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are both provided with pressure sensors, and the pressure sensors are used to obtain the pressure values ​​in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2. It can be understood that the pressure value can be used as a judgment condition for whether the transfer device 100 is working normally. Generally speaking, when the transfer device 100 is in a normal working state, the pressure values ​​in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are within a normal threshold range, and when the transfer device 100 is in an abnormal working state, the pressure values ​​in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are usually too large or too small. Based on this, the present application can realize real-time monitoring of the pressure values ​​in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 by setting a pressure sensor, that is, the pressure value in the liquid hydrogen transfer process can be monitored throughout the entire process.

[0046] As some embodiments of the present invention, the pressure sensor is also connected to the controller in communication, and the communication connection includes but is not limited to a standard serial port connection, an Ethernet connection, a wireless connection, etc. The controller can be used to control the on and off of the control valve according to the pressure value. Figure 1 Taking the transfer device 100 as an example, when the monitored pressure value is within the normal threshold range, the controller controls the emergency shut-off valve 6 of the liquid hydrogen pipeline 1, the automatic control valve 7 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 to be in an open state, and when the monitored pressure value is outside the normal threshold range, for example, when the monitored pressure value of the liquid hydrogen pipeline 1 is >0.33MPa (settable) or the pressure value of the gas hydrogen pipeline 2 is >0.36MPa (settable), the emergency shut-off valve 6 of the liquid hydrogen pipeline 1 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 are controlled to be disconnected to stop the transfer device 100; when the monitored pressure value of the liquid hydrogen pipeline 1 is >0.33MPa (settable) or the pressure value of the gas hydrogen pipeline 2 is >0.36MPa (settable), the emergency shut-off valve 6 of the liquid hydrogen pipeline 1 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 are controlled to be disconnected to stop the transfer device 100; When the pressure value or the pressure value of the gas hydrogen pipeline 22 is <0.02MPa (settable), the emergency shut-off valve 6 of the liquid hydrogen pipeline 1 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 are controlled to be disconnected, so that the transfer device 100 stops the transfer; when the pressure value of the liquid hydrogen pipeline 1 is monitored to be >0.28MPa (settable) or the pressure value of the gas hydrogen pipeline 2 is >0.3MPa (settable), the controller can actively control the disconnection of the automatic control valve 7 of the liquid hydrogen pipeline 1. It should be noted that for other situations where the emergency shut-off valve 6 works, the automatic control valve 7 can also be controlled to be disconnected to achieve double assurance and further reduce the losses caused by abnormal accidents. In this way, when the pressure values ​​in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are abnormal, the control valve can be cut off in time, and the transfer pipeline between the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank can be disconnected urgently, which is conducive to ensuring the safe operation of the transfer process.

[0047] According to the transfer device 100 of the embodiment of the utility model, by setting a pressure sensor, it is possible to realize real-time monitoring of the pressure value in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2. At the same time, the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are both provided with a control valve, and the controller controls the on and off of the control valve according to the acquired pressure value. In this way, not only can the pressure value in the liquid hydrogen transfer process be monitored throughout the entire process, but also when the pressure value in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 is abnormal, the control valve can be cut off in time, and the transfer pipeline between the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank can be disconnected urgently, which is conducive to ensuring the safe operation of the transfer process.

[0048] It should be noted that the controller can also be connected to the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank in communication. The controller can obtain the hydrogen storage capacity of the liquid hydrogen tank truck 200 and the hydrogen storage capacity in the liquid hydrogen storage tank in real time, so as to judge whether there is enough liquid hydrogen in the liquid hydrogen tank truck 200 and whether the liquid hydrogen in the liquid hydrogen storage tank is full during the transfer process. For example, when the hydrogen storage in the liquid hydrogen storage tank reaches 90% (settable), the controller can control the automatic control valve 7 to disconnect the liquid hydrogen pipeline 1 to stop the transfer. When an emergency stop signal is detected during the transfer process, the emergency shut-off valve 6 of the liquid hydrogen pipeline 1 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 can also be controlled by the controller to disconnect so that the transfer device 100 stops the transfer.

[0049] In some embodiments of the present invention, Figure 1 As shown, it also includes: a temperature sensor 5. The liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are both provided with a temperature sensor 5. The temperature sensor 5 is used to obtain the temperature value in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2. The temperature sensor 5 is communicatively connected with the controller, and the controller can be used to control the on and off of the control valve according to the temperature value.

[0050] Specifically, by setting temperature sensors 5 in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2, the temperature values ​​in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 can be monitored in real time during the entire liquid transfer and unloading process, and the controller can be used to control the on and off of the control valve according to the temperature value. Figure 1 Take the transfer device 100 in the example for explanation. When the monitored temperature value is within the normal threshold range, the controller controls the emergency shut-off valve 6 of the liquid hydrogen pipeline 1, the automatic control valve 7 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 to be in an open state. When the temperature value is abnormal, for example, when the temperature value in the gas hydrogen pipeline 2 is monitored to be ≤-160°C (settable), the emergency shut-off valve 6 of the liquid hydrogen pipeline 1 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 are controlled to be disconnected to stop the transfer device 100. With such a configuration, when the temperature in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 is abnormal, the control valve can be cut off in time through the controller, and the transfer pipeline between the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank can be urgently disconnected, thereby realizing automatic protection in an emergency situation, which is conducive to minimizing the losses caused by abnormal accidents.

[0051] In some embodiments of the utility model, it also includes: a hydrogen leakage detection device, the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are both provided with a hydrogen leakage detection device, the hydrogen leakage detection device can be used to detect the hydrogen leakage detection results of the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2, the hydrogen leakage detection device is also communicatively connected with the controller, and the controller can be used to control the on and off of the control valve according to the hydrogen leakage detection result.

[0052] Specifically, the hydrogen leakage detection device is used to detect whether there is hydrogen leakage in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2, and the controller can be used to control the on and off of the control valve according to the hydrogen leakage detection result. Figure 1 Take the transfer device 100 in the example for explanation, if the hydrogen leakage detection result shows that no hydrogen leakage occurs in both the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2, then the controller controls the emergency shut-off valve 6, the automatic control valve 7 and the emergency shut-off valve 6 of the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 to be in an open state; if the hydrogen leakage detection result shows that hydrogen leakage occurs in the liquid hydrogen pipeline 1 and / or the gas hydrogen pipeline 2, then the emergency shut-off valve 6 of the liquid hydrogen pipeline 1 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 are disconnected to stop the transfer device 100 from transferring. With such an arrangement, when hydrogen leakage is detected in the liquid hydrogen pipeline 1 and / or the gas hydrogen pipeline 2, the control valve can be cut off in time by the controller, and the transfer pipeline between the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank can be urgently disconnected, thereby realizing automatic protection in the event of a hydrogen leakage emergency, which is beneficial to minimize the risk of explosion caused by hydrogen leakage.

[0053] In some embodiments of the present invention, it also includes: a flow meter 8. The liquid hydrogen pipeline 1 is provided with a flow meter 8. The flow meter 8 is used to detect the hydrogen flow rate of the liquid hydrogen pipeline 1. The flow meter 8 is also communicatively connected with the controller. The controller can be used to control the on and off of the control valve according to the hydrogen flow rate.

[0054] Specifically, the flow meter 8 can obtain the hydrogen flow rate flowing into the liquid hydrogen storage tank in real time, which is convenient for real-time measurement and pricing, and meets the frequent intermittent operation requirements of the liquid hydrogen tank truck 200 to transfer liquid hydrogen to the liquid hydrogen storage tank. It should be noted that the controller can also be used to control the on and off of the control valve according to the hydrogen flow rate, and continue to Figure 1Take the transfer device 100 in the example for explanation. When the monitored hydrogen flow is within the normal threshold range, the controller controls the emergency shut-off valve 6 of the liquid hydrogen pipeline 1, the automatic control valve 7 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 to be in an open state. When the hydrogen flow is abnormal, for example, when the hydrogen flow is less than a certain threshold due to hydrogen leakage, the emergency shut-off valve 6 of the liquid hydrogen pipeline 1 and the emergency shut-off valve 6 of the gas hydrogen pipeline 2 are controlled to be disconnected so that the transfer device 100 stops the transfer. With such a configuration, when the hydrogen flow is abnormal, the control valve can be cut off in time by the controller, and the transfer pipeline between the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank can be urgently disconnected, thereby realizing automatic protection in an emergency situation, which is conducive to minimizing the losses caused by abnormal accidents.

[0055] In some embodiments of the utility model, it also includes: an alarm device, the alarm device is connected to the controller in communication, and the controller can be used to control the alarm device to alarm. That is to say, the transfer device 100 is also provided with an alarm device, the alarm device includes but is not limited to a sound alarm device or a light alarm device. When the transfer device 100 fails, for example, when the temperature value in the gas hydrogen pipeline 2 is monitored to be ≤-150°C (settable), a sound and light alarm can be used to remind people to handle the fault in time, which is conducive to reducing the losses caused by the fault. It can be understood that for other faults of the transfer device 100, such as abnormal temperature value, abnormal pressure value, hydrogen leakage and other faults, the alarm device can give timely alarms, and examples will not be given here one by one.

[0056] In some embodiments of the utility model, it also includes: a display, the display is connected to the controller in communication, and the controller can be used to control the display to display the transfer data and fault information. That is to say, the transfer device 100 is also provided with a display, and the transfer data can be displayed in real time by setting the display, for example, the temperature value and pressure value in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 can be displayed in real time, and the amount of liquid hydrogen in the liquid hydrogen tank and the liquid hydrogen storage tank can also be displayed. When the transfer device 100 fails, the corresponding fault information can also be displayed through the display, such as the pressure value is too large, the temperature is too high, etc., which will not be explained one by one here.

[0057] In some embodiments of the present invention, Figure 1 As shown, it is characterized in that it also includes: a venting pipeline 4, which is suitable for being connected with the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2. Specifically, a pressure relief valve is also provided on the connecting pipeline between the liquid hydrogen pipeline 1, the gas hydrogen pipeline 2 and the venting pipeline 4. When the pressure in the pipeline is too high, the pressure relief valve opens to connect the venting pipeline 4 with the liquid hydrogen pipeline 1 and / or the gas hydrogen pipeline 2, so that the hydrogen can be depressurized to the venting pipeline 4 through the pressure relief valve and discharged through the venting pipeline 4, which is conducive to improving the safety of the liquid hydrogen transfer process.

[0058] In some embodiments of the present invention, Figure 1 As shown, it also includes: a purge pipeline 3, the purge pipeline 3 is suitable for being connected to the hydrogen source 31 or the nitrogen source 32, and the purge pipeline 3 is also suitable for being connected to the liquid hydrogen pipeline 1.

[0059] It should be noted that during the frequent intermittent operation of the commercial liquid hydrogen system, the liquid hydrogen tank truck 200 and the liquid hydrogen storage tank are frequently connected and disconnected, which causes air to enter the transfer connection pipeline. The presence of air in the pipeline will directly lead to impure liquid hydrogen. Compared with specific independent hydrogen use environments such as aerospace, the air mixed in the pipeline will solidify and block the pipeline under the ultra-low temperature environment of liquid hydrogen, which will reduce the transfer efficiency at the least and cause safety hazards at worst, causing pipeline rupture, liquid hydrogen leakage, and then explosion, thereby causing great safety hazards.

[0060] Based on this, the present application also sets up a corresponding purge pipeline 3, specifically, as Figure 1 As shown, the first interface 11 of the liquid hydrogen pipeline 1 and the second interface 21 of the gaseous hydrogen pipeline 2 can also be connected to the bypass pipeline 201 of the liquid hydrogen tank truck 200 .

[0061] As some embodiments of the utility model, the purge line 3 can be connected to the hydrogen source 31 or the nitrogen source 32, that is, the purge line 3 can be connected to the hydrogen source 31 to use the hydrogen source 31 to transport hydrogen into the purge line 3, and the purge line 3 can also be connected to the nitrogen source 32 to use the nitrogen source 32 to transport nitrogen into the purge line 3, thereby realizing hydrogen purge or nitrogen purge.

[0062] As some embodiments of the present utility model, the purge pipeline 3 is also suitable for being connected to the liquid hydrogen pipeline 1 . When the purge pipeline 33 is connected to the liquid hydrogen pipeline 11 , the hydrogen or nitrogen in the purge pipeline 3 can enter the liquid hydrogen pipeline 1 .

[0063] As some embodiments of the present application, a valve may be provided between the purge pipeline 3 and the liquid hydrogen pipeline 1. The valve may be, but is not limited to, a manual valve. By controlling the opening and closing of the manual valve, the purge pipeline 3 and the liquid hydrogen pipeline 1 may be selectively connected. For example, Figure 1 As shown, the purge pipeline 3 is provided with a seventh manual valve 106. When the seventh manual valve 106 is opened, the purge pipeline 3 is connected to the liquid hydrogen pipeline 1. When the seventh manual valve 106 is closed, the purge pipeline 3 is not connected to the liquid hydrogen pipeline 1.

[0064] As some embodiments of the present application, as described above, the vent pipeline 4 is suitable for being connected to the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2. When the liquid hydrogen pipeline 1 is connected to the vent pipeline 4, during the purging process, the hydrogen or nitrogen in the liquid hydrogen pipeline 1 can be directly discharged through the vent pipeline 4. When the gas hydrogen pipeline 2 is connected to the vent pipeline 4, during the purging process, if the first interface 11 of the liquid hydrogen pipeline 1 is connected to the second interface 21 of the gas hydrogen pipeline 2 through the bypass pipeline 201 of the liquid hydrogen tank truck 200, the hydrogen or nitrogen in the liquid hydrogen pipeline 1, the gas hydrogen pipeline 2 and the bypass pipeline 201 of the liquid hydrogen tank truck 200 can be discharged through the vent pipeline 4.

[0065] As some embodiments of the present application, a valve may be provided between the liquid hydrogen pipeline 1, the gas hydrogen pipeline 2 and the release pipeline 4. The valve may be, but is not limited to, a manual valve. By controlling the opening and closing of the manual valve, the liquid hydrogen pipeline 1, the gas hydrogen pipeline 2 and the release pipeline 4 may be selectively connected. For example, Figure 1 As shown, the connecting pipelines between the liquid hydrogen pipeline 1 , the gaseous hydrogen pipeline 2 and the release pipeline 4 are all provided with a sixth manual valve 105 .

[0066] Furthermore, the liquid hydrogen pipeline 1, the gas hydrogen pipeline 2 and the purge pipeline 3 are also provided with corresponding manual valves to control the connection or closing of the purge circuit. For example, the liquid hydrogen pipeline 1 is provided with a first manual valve 10, the gas hydrogen pipeline 2 is provided with a fifth manual valve 104, and the purge pipeline 3 is provided with a second manual valve 101, a third manual valve 102, a fourth manual valve 103 and a seventh manual valve 106.

[0067] It should be noted that when the liquid hydrogen tank truck 200 uses the transfer device 100 to transfer liquid hydrogen, the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 in the transfer device 100 need to be purged before and after the transfer. It can be understood that before the liquid hydrogen tank truck 200 transfers liquid hydrogen, the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 in the transfer device 100 need to be purged with nitrogen first, and then with hydrogen. After the liquid hydrogen tank truck 200 transfers liquid hydrogen, the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 in the transfer device 100 need to be purged with hydrogen first, and then with nitrogen. The former is to reduce the air content in the pipeline, and the latter is to remove the residual liquid hydrogen in the pipeline.

[0068] As a specific example, Figure 1As shown, taking the nitrogen purging of the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 in the transfer device 100 as an example for explanation, the purge pipeline 3 is controlled to be connected with the nitrogen source 32, the second manual valve 101 and the seventh manual valve 106 of the purge pipeline 3 are opened, the third manual valve 102 and the fourth manual valve 103 are closed, the first manual valve 10 of the liquid hydrogen pipeline 1 is opened, the fifth manual valve 104 of the gas hydrogen pipeline 2 is opened, the sixth manual valve 105 between the gas hydrogen pipeline 2 and the venting pipeline 4 is opened, and the sixth manual valve 105 between the liquid hydrogen pipeline 1 and the venting pipeline 4 is closed. In this way, the nitrogen delivered by the nitrogen source 32 sequentially purges the purge pipeline 3, the liquid hydrogen pipeline 1, the bypass pipeline 201 of the liquid hydrogen tank truck 200, the gas hydrogen pipeline 2 and the venting pipeline 4, thereby discharging the air in each pipeline and replacing it with nitrogen.

[0069] Further, after the nitrogen purge is completed, continue to refer to Figure 1 As shown, the purge pipeline 3 is controlled to be connected with the hydrogen source 31, the third manual valve 102, the fourth manual valve 103, and the seventh manual valve 106 of the purge pipeline 3 are opened, the second manual valve 101 is closed, the first manual valve 10 of the liquid hydrogen pipeline 1 is opened, the fifth manual valve 104 of the gas hydrogen pipeline 2 is opened, the sixth manual valve 105 between the gas hydrogen pipeline 2 and the venting pipeline 4 is opened, and the sixth manual valve 105 between the liquid hydrogen pipeline 1 and the venting pipeline 4 is closed. In this way, the hydrogen transported by the hydrogen source 31 sequentially purges the purge pipeline 3, the liquid hydrogen pipeline 1, the bypass pipeline 201 of the liquid hydrogen tank truck 200, the gas hydrogen pipeline 2, and the venting pipeline 4, thereby discharging the nitrogen in each pipeline and replacing it with hydrogen.

[0070] It should be noted that after the transfer, the transfer device 100 is first purged with hydrogen and then with nitrogen. The purging scheme is the same as above and will not be described in detail here.

[0071] Therefore, the transfer device 100 uses the liquid hydrogen pipeline 1, the gas hydrogen pipeline 2, the purge pipeline 3, the purge pipeline 3 and the bypass pipeline 201 of the liquid hydrogen tank truck 200 to form a purge replacement circuit. By transporting hydrogen or nitrogen to the purge pipeline 3, the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 in the transfer device 100 are purged, and the air content in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 is reduced, which is beneficial to improving the purity of liquid hydrogen and reducing safety hazards. At the same time, the purge replacement circuit utilizes the bypass pipeline 201 of the liquid hydrogen tank truck 200, simplifies the pipeline structure of the transfer device 100 itself, and can also purge the bypass pipeline 201 of the liquid hydrogen tank truck 200 without affecting the purge effect, which is beneficial to improving operating efficiency and safety.

[0072] It should be noted that the present application can also purge only the liquid hydrogen pipeline 1. For example, taking the nitrogen purging of the liquid hydrogen pipeline 1 in the transfer device 100 as an example, the purge pipeline 3 is controlled to be connected with the nitrogen source 32, the second manual valve 101 and the seventh manual valve 106 of the purge pipeline 3 are opened, the third manual valve 102 and the fourth manual valve 103 are closed, the first manual valve 10 of the liquid hydrogen pipeline 1 is closed, the sixth manual valve 105 between the gas hydrogen pipeline 2 and the vent pipeline 4 is closed, and the sixth manual valve 105 between the liquid hydrogen pipeline 1 and the vent pipeline 4 is opened, so as to discharge the air in each pipeline and replace it with nitrogen. When the nitrogen purge is finished, the purge pipeline 3 is controlled to be connected with the hydrogen source 31, the third manual valve 102, the fourth manual valve 103, and the seventh manual valve 106 of the purge pipeline 3 are opened, the second manual valve 101 is closed, the first manual valve 10 of the liquid hydrogen pipeline 1 is closed, the sixth manual valve 105 between the gas hydrogen pipeline 2 and the venting pipeline 4 is closed, and the sixth manual valve 105 between the liquid hydrogen pipeline 1 and the venting pipeline 4 is opened, so that the nitrogen in each pipeline is discharged and replaced with hydrogen. Such a setting can reduce the purge distance and realize the focused purge of the liquid hydrogen pipeline 1. This purge method can supplement the first purge.

[0073] In some embodiments of the present invention, Figure 1 As shown, both the liquid hydrogen pipeline and the gas hydrogen pipeline have gas measuring outlets. That is, the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are respectively provided with gas measuring outlets 9, through which the gas in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 after purge can be obtained respectively, so as to facilitate the judgment of whether the gas in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 meets the transfer requirements, and is conducive to improving the safety of the transfer device 100.

[0074] According to the second embodiment of the utility model, the liquid hydrogen tanker 200 includes the transfer device 100 in the first embodiment.

[0075] According to the liquid hydrogen tanker 200 of the embodiment of the utility model, by being provided with the above-mentioned transfer device 100, by setting a pressure sensor, it is possible to realize real-time monitoring of the pressure value in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2. At the same time, both the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 are provided with a control valve, and the controller controls the on-off of the control valve according to the acquired pressure value. In this way, not only can the pressure value in the liquid hydrogen transfer process be monitored throughout the entire process, but also when the pressure value in the liquid hydrogen pipeline 1 and the gas hydrogen pipeline 2 is abnormal, the control valve can be cut off in time, and the transfer pipeline between the liquid hydrogen tanker 200 and the liquid hydrogen storage tank can be disconnected urgently, which is conducive to ensuring the safe operation of the transfer process.

[0076] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0078] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A transfer device for a liquid hydrogen tank truck, characterized in that: include: A liquid hydrogen pipeline and a gaseous hydrogen pipeline, wherein the liquid hydrogen pipeline and the gaseous hydrogen pipeline are suitable for being connected between the liquid hydrogen tank truck and the liquid hydrogen storage tank; A control valve and a pressure sensor, the liquid hydrogen pipeline and the gas hydrogen pipeline are both provided with the control valve, and the liquid hydrogen pipeline and the gas hydrogen pipeline are both provided with the pressure sensor, and the pressure sensor is used to obtain the pressure value in the liquid hydrogen pipeline and the gas hydrogen pipeline; A controller is communicatively connected with the control valve and the pressure sensor, and the controller can be used to control the on and off of the control valve according to the pressure value.

2. The transfer device according to claim 1, characterized in that: Also includes: A temperature sensor, the liquid hydrogen pipeline and the gas hydrogen pipeline are both provided with the temperature sensor, and the temperature sensor is used to obtain the temperature value in the liquid hydrogen pipeline and the gas hydrogen pipeline; The temperature sensor is in communication with the controller, and the controller can be used to control the on and off of the control valve according to the temperature value.

3. The transfer device according to claim 1, characterized in that: Also includes: A hydrogen leakage detection device, the liquid hydrogen pipeline and the gas hydrogen pipeline are both provided with the hydrogen leakage detection device, and the hydrogen leakage detection device can be used to detect the hydrogen leakage detection results of the liquid hydrogen pipeline and the gas hydrogen pipeline; The hydrogen leakage detection device is also connected to the controller for communication, and the controller can be used to control the on-off of the control valve according to the hydrogen leakage detection result.

4. The transfer device according to claim 1, characterized in that: Also includes: A flow meter, the liquid hydrogen pipeline is provided with the flow meter, and the flow meter is used to detect the hydrogen flow rate of the liquid hydrogen pipeline; The flow meter is also in communication connection with the controller, and the controller can be used to control the on-off of the control valve according to the hydrogen flow rate.

5. The transfer device according to claim 1, characterized in that: Also includes: An alarm device is communicatively connected with the controller, and the controller can be used to control the alarm device to alarm.

6. The transfer device according to claim 1, characterized in that: Also includes: A display is communicatively connected to the controller, and the controller can be used to control the display to display transfer data and fault information.

7. The transfer device according to any one of claims 1 to 6, characterized in that: Also includes: A venting pipeline, wherein the venting pipeline is suitable for being connected to the liquid hydrogen pipeline and the gas hydrogen pipeline.

8. The transfer device according to claim 7, characterized in that: Also includes: The purge pipeline is suitable for being connected to a hydrogen source or a nitrogen source, and the purge pipeline is also suitable for being connected to the liquid hydrogen pipeline.

9. The transfer device according to claim 1, characterized in that: The liquid hydrogen pipeline and the gas hydrogen pipeline both have gas measuring outlets.

10. A liquid hydrogen tank truck, characterized in that: Comprising a transfer device according to any one of claims 1-9.

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