Hydrogen supply system for hydrogen fuel cell mine truck

Abstract

The utility model discloses a hydrogen supply system for a hydrogen fuel cell mine truck. The hydrogen supply system comprises a hydrogen supply system bracket, a hydrogenation module, a pressure regulating module and a hydrogen fuel cell, the hydrogenation module is connected with a hydrogenation port of the hydrogen storage module, the hydrogen storage module is connected with the pressure regulating module, a cylinder valve is arranged at the joint of the hydrogen storage module and the pressure regulating module, the pressure regulating module is connected with the hydrogen fuel cell, and a pressure reducing valve is arranged at the joint of the pressure regulating module and the hydrogen fuel cell. According to the utility model, the cylinder valves are connected through the high-pressure pipeline, the connecting pipeline is bent and the length is increased, so that the relative movement between the gas cylinder and the joint caused by collision is avoided, and the leakage is avoided; the bent pipe effectively avoids the increase of pipeline connection points due to insufficient pipeline space, and reduces the leakage possibility while reducing the cost; the hydrogen supply system can achieve the functions of high-temperature protection, low-temperature early warning, overpressure unloading and the like, the working state of the hydrogen supply system is monitored in real time, and the safety protection function of the hydrogen supply system is achieved while normal functions are achieved.

Description

Technical Field

[0001] The utility model relates to the field of hydrogen energy, in particular to a hydrogen supply system for a hydrogen fuel cell mining truck. Background Art

[0002] A hydrogen energy mining truck is a new type of mining truck that uses a hydrogen fuel cell as a power source. Compared with traditional mining trucks, hydrogen energy mining trucks have the advantages of zero emissions, low noise, and high efficiency. As a renewable clean energy, hydrogen energy can effectively solve the pain points of traditional mining trucks in environmental pollution, energy cost, safety, etc.

[0003] As an indispensable part of a hydrogen fuel cell, the main task of the hydrogen supply system is to provide high-quality hydrogen for the hydrogen fuel cell to ensure the normal operation and efficient power generation of the hydrogen fuel cell. Its design needs to consider various modules such as hydrogen refueling, hydrogen storage, and pressure regulation.

[0004] For example: The patent document with the patent number 202222349432.6 discloses a single-bottle group hydrogen supply system, including an isolation cover and a frame arranged inside the isolation cover. The isolation cover and the frame are fixed by first bolts. There is a hydrogen bottle inside the frame, a hydrogen bottle base is arranged at the bottom of the frame, the hydrogen bottle is placed on the hydrogen bottle base, a hydrogen bottle valve is arranged at the mouth of the hydrogen bottle, a pressure reducing valve is arranged below the hydrogen bottle valve, the pressure reducing valve is placed horizontally, and a hydrogen refueling port assembly is arranged on one side of the frame facing the mouth of the hydrogen bottle. The hydrogen bottle valve, the pressure reducing valve, and the hydrogen refueling port assembly are connected by a pipeline system to form an integration.

[0005] The isolation cover of the above patent solution separates the hydrogen supply system from the external system. The isolation cover and the frame are fixed by first bolts, which not only play an isolation role but also can protect the hydrogen supply system, improving the safety of the hydrogen supply system during use; the pressure reducing valve is placed horizontally to make better use of the internal space of the system and optimize the size of the frame; the hydrogen bottle valve, the pressure reducing valve, and the hydrogen refueling port assembly are connected by a pipeline system to form an integration, ensuring the integrity of the hydrogen supply system.

[0006] However, the bottle valves of the hydrogen supply system in the above patent solution are connected by pipelines, and the distance between the pipeline connection points of the bottle valve and the joint is relatively close, and the number of pipeline connection points is insufficient due to insufficient pipeline space. There may be leakage due to relative movement caused by collision and vibration.

[0007] Therefore, it is necessary to improve such a structure to overcome the above defects. Summary of the Utility Model

[0008] The purpose of the utility model is to provide a hydrogen supply system for a hydrogen fuel cell mining truck, aiming to provide a hydrogen supply system for mining trucks with innovative structure, safety, and reliability to solve the problems existing in the prior art.

[0009] The above technical object of the utility model is achieved by the following technical solutions:

[0010] A hydrogen supply system for a hydrogen fuel cell mining truck, comprising a hydrogen supply system support, a hydrogen addition module, a pressure regulating module and a hydrogen fuel cell arranged on the hydrogen supply system support; the hydrogen addition module is connected to the hydrogen addition port of the hydrogen storage module through a high-pressure hydrogen pipeline, the outlet end of the hydrogen storage module is connected to the inlet end of the pressure regulating module through a high-pressure hydrogen pipeline, a bottle valve is arranged at the connection between the hydrogen storage module and the pressure regulating module, the outlet end of the pressure regulating module is connected to the hydrogen addition end of the hydrogen fuel cell through a low-pressure hydrogen pipeline, and a pressure reducing valve is arranged at the connection between the pressure regulating module and the hydrogen fuel cell.

[0011] Further, the hydrogen supply system support includes two installation beams at the bottom, three columns arranged along the length direction of the installation beams, several cross beams arranged along the height direction of the columns, and several diagonal support brackets arranged outside the columns.

[0012] Further, the hydrogen addition module includes a hydrogen addition port and a one-way valve connected to the hydrogen addition port through a high-pressure hydrogen pipeline, the hydrogen addition port is fixed on the hydrogen supply system support through a baffle, and the baffle is screwed and fixed on the hydrogen supply system support.

[0013] Further, the hydrogen storage module includes hydrogen storage cylinders, bottle valves, tail valves and high-pressure pressure sensors, the hydrogen storage cylinders are arranged in an array, a bottle valve is respectively arranged at the inlet end of each hydrogen storage cylinder, a tail valve is respectively arranged at the outlet end of each hydrogen storage cylinder, and a high-pressure pressure sensor is arranged in the bottle valve connected to the hydrogen storage cylinder in the upper left corner.

[0014] Further, a support sheet metal base matching the contour of the hydrogen storage cylinder is arranged on the hydrogen supply system support, the hydrogen storage cylinder is arranged on the hydrogen supply system support through the support sheet metal base, a metal strap is arranged on the support sheet metal base, and the hydrogen storage cylinder is fixed through the metal strap.

[0015] Further, the bottle valves are connected through a high-pressure hydrogen pipeline, the bottle valves are provided with an over-temperature relief device, the TPRD discharge port of the bottle valve is connected through a hydrogen pipeline, the three TPRD discharge pipelines of the hydrogen storage cylinders in the left column are merged into one pipeline on the left through a pipe joint and discharged to the top of the hydrogen supply system centrally, the three-way TPRD discharge pipeline of the hydrogen storage cylinders in the right column is merged into one pipeline on the right through a pipe joint and discharged to the top of the hydrogen supply system centrally, and the pipeline at the top is bent in an "S" shape.

[0016] Further, an over-temperature relief device is provided on the tail valve. The TPRD interface of the tail valve of the hydrogen storage cylinder in the lower row is connected to a right-angle elbow joint, and the TPRD interface of the tail valve of the hydrogen storage cylinder in the upper two rows is connected to a tee joint. The TPRD discharge of the tail valve of the hydrogen storage cylinders in the left column is discharged at the top of the hydrogen supply system through a pipeline connecting the right-angle elbow joint and the tee joint. The TPRD discharge of the tail valve of the hydrogen storage cylinders in the right column is discharged at the top of the hydrogen supply system through a pipeline connecting the right-angle elbow joint and the tee joint. The TPRD discharge pipeline is bent in an "S" shape.

[0017] Further, the pressure regulating module includes a pressure reducing valve, a relief valve, and a manual shut-off valve. A filter is provided at the front end of the intake port of the pressure reducing valve. The outlet of the pressure reducing valve is connected to a low-pressure hydrogen pipeline, and the other end of the low-pressure hydrogen pipeline is connected to a tee. One end of the tee is provided with a relief valve, and the other end is provided with a manual shut-off valve;

[0018] The lower part of the relief valve is connected to a tee. One end of the tee of the relief valve is connected to the outlet pipeline of the pressure reducing valve, and the other end is connected to the metal hose for the intake of the fuel cell stack; the discharge port of the relief valve is connected to the TPRD discharge pipeline, and the TPRD discharge pipeline extends to the top of the hydrogen supply system for discharge after being bent.

[0019] A quick-connect female head is provided at the rear end of the manual shut-off valve. The manual shut-off valve and the quick-connect female head are connected through a low-pressure hydrogen pipeline. The manual shut-off valve is provided on the left side of the hydrogen filling port, and the quick-connect female head is provided on the right side of the hydrogen filling port.

[0020] Further, four "L"-shaped lifting lugs are welded on the top cross beam of the hydrogen supply system bracket;

[0021] A special rubber pad is provided at the contact between the hydrogen storage cylinder and the metal strap, and a base rubber pad is provided at the contact between the sheet metal base and the hydrogen storage cylinder;

[0022] A temperature sensor is provided on the bottle valve, and the temperature sensor transmits data through a wire harness.

[0023] Further, a medium-pressure pressure sensor is provided on the pressure reducing valve;

[0024] A hydrogen concentration sensor is provided in each of the top spaces on the bottle valve side and the tail valve side of the hydrogen storage cylinder;

[0025] The high-pressure pressure sensor and the medium-pressure pressure sensor are connected through a wire harness, and the wire harness is centrally connected to the port of the hydrogen controller. The hydrogen controller is provided at a position adjacent to the hydrogen filling port in the lower left.

[0026] The wire harness is fixed to the hydrogen supply system bracket through cable ties;

[0027] The pipeline is fixed to the hydrogen supply system bracket through pipe clamps.

[0028] In summary, the utility model has the following beneficial effects:

[0029] The bottle valves of the hydrogen supply system are connected through high-pressure pipelines. By bending and increasing the length of the connecting pipelines, the relative movement between the gas cylinders and connectors caused by collision and vibration can be effectively avoided, preventing leakage. At the same time, the elbow pipe design effectively avoids adding pipeline connection points due to insufficient pipeline space, reducing costs and the possibility of leakage. This hydrogen supply system is equipped with an over-temperature relief device (TPRD), temperature sensors, pressure sensors, unloading valves, hydrogen concentration sensors, and hydrogen controllers, which can achieve functions such as high-temperature protection, low-temperature warning, and over-pressure unloading, real-time monitoring of the working state of the hydrogen supply system. While realizing normal functions, it plays a safety protection role for the hydrogen supply system, ensuring the safe and reliable operation of the hydrogen supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 FIG. is a side view of the hydrogen supply system for a hydrogen fuel cell mining truck according to the present utility model.

[0031] Figure 2 FIG. is a front view of the hydrogen supply system for a hydrogen fuel cell mining truck according to the present utility model.

[0032] Figure 3 FIG. is a schematic diagram of the hydrogen supply system for a hydrogen fuel cell mining truck according to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to make the technical means, creative features, achieved purposes, and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0034] As Figure 1 、 Figure 2 and Figure 3 shown, a hydrogen supply system for a hydrogen fuel cell mining truck proposed by the present utility model includes a hydrogen supply system bracket (14), a hydrogenation module, a hydrogen storage module, and a pressure regulation module. Different components are equipped according to system requirements. The hydrogenation module is connected to the hydrogen storage module through a high-pressure hydrogen pipeline from the hydrogenation port (7). The hydrogen storage module is connected to the pressure regulation module through a high-pressure hydrogen pipeline from the bottle valve (2). The pressure regulation module is connected to the fuel cell through a low-pressure hydrogen pipeline from the pressure reducing valve (3). The hydrogenation module, hydrogen storage module, and pressure regulation module are integrated on the hydrogen supply system bracket (14).

[0035] Specifically, the hydrogen system bracket includes two bottom mounting beams connected to the whole vehicle, three columns of uprights, several cross beams, and several diagonal bracing brackets. The three columns of uprights include four main beams perpendicular to the mounting beams and multiple uprights. The several cross beams include four rows of cross beams perpendicular to the mounting beams and four rows of cross beams parallel to the mounting beams. Based on the mounting beams, the main beams and uprights are welded to optimize the bracket structure and enhance the bracket strength.

[0036] Specifically, four "L"-shaped lifting lugs are welded to the top crossbeam of the hydrogen supply system bracket (14). Compared with the traditional screw-type lifting lugs, the welded "L"-shaped lifting lugs have a stronger force bearing capacity and achieve the purpose of simplifying the installation process and saving assembly time.

[0037] Specifically, the hydrogenation module includes a hydrogenation port (7) and a one-way valve (13). The hydrogenation port (7) and the one-way valve (13) are connected through a high-pressure pipeline. The hydrogenation port (7) is fixed to the lower left position of the hydrogen supply system bracket (14) through a baffle, and the baffle is screwed and fixed to the hydrogen supply system bracket (14). When hydrogenation is performed, the dust cover of the hydrogenation port (7) is opened, the hydrogenation gun is inserted into the hydrogenation port (7), and hydrogen enters the rear end pipeline of the hydrogenation port (7). The hydrogenation port (7) is integrated with a filter (9) and a one-way valve (13), which realizes the functions of filtering hydrogen and one-way inflation during hydrogenation. A one-way valve (13) is connected to the rear end of the hydrogenation port (7) to prevent the hydrogenation port (7) from being damaged, resulting in the release of high-pressure gas and damaging the rear end components.

[0038] Specifically, the hydrogen storage module includes a bottle valve (2), a hydrogen storage bottle (12), a tail valve (11), and a high-pressure pressure sensor (1). The hydrogen storage bottles (12) are arranged in three rows and two columns, with a total of six hydrogen storage bottles (12). The bottle mouths of the hydrogen storage bottles (12) are respectively connected to the bottle valves (2), and the bottle tails are respectively connected to the tail valves (11). The bottle valve (2) connected to the upper left hydrogen storage bottle (12) is provided with a high-pressure pressure sensor (1). The high-pressure pressure sensor (1) is used to monitor the hydrogen pressure at the medium-pressure end in real time. When the pressure value monitored by the high-pressure pressure sensor (1) is continuously higher or lower than the set pressure value, the hydrogen controller (5) alarms and sequentially closes the bottle valves (2) to ensure the safety of hydrogen use.

[0039] Specifically, the hydrogen storage cylinder (12) is fixed to the hydrogen supply system bracket (14) by a special metal strap. The hydrogen supply system bracket (14) is provided with a crossbeam on which the hydrogen storage cylinder (12) is placed, and an arc-shaped supporting sheet metal base that matches the outline size of the hydrogen storage cylinder (12) is provided. The sheet metal bases on both sides of the crossbeam are provided with strap fixing baffles, and the straps are arranged between the crossbeam and the baffles. The straps are screwed to hold the hydrogen storage cylinder (12) tightly, ensuring the stability of the hydrogen storage cylinder (12) during the use of the hydrogen supply system. The baffles are integrated into the sheet metal base to prevent the straps from being displaced and losing their fixing function.

[0040] Specifically, a special rubber pad is provided at the contact point between the hydrogen storage cylinder (12) and the strap, and a base rubber pad is provided at the contact point between the sheet metal base and the hydrogen storage cylinder (12). This prevents the strap from scratching the surface of the cylinder, and the rubber pad increases friction, making the hydrogen storage cylinder (12) more firmly installed and better able to resist vehicle vibration.

[0041] Specifically, the bottle valves (2) are connected in series and parallel through high-pressure hydrogen pipelines. The bottle valves (2) are equipped with over-temperature relief devices (TPRDs). The TPRD discharge ports of the bottle valves (2) are connected through hydrogen pipelines. The three TPRD discharge pipelines of the gas cylinders in the left column are merged into one pipeline on the left through pipe connectors and discharged centrally to the top of the hydrogen supply system. The tee TPRD discharge pipelines of the gas cylinders in the right column are merged into one pipeline on the right through pipe connectors and discharged centrally to the top of the hydrogen supply system. The pipeline is bent in an "S" shape. The bottle valve (2) integrates an electromagnetic valve, a manual stop valve (6), a relief valve, a filter (9), a discharge valve, and a TPRD. During the hydrogen usage process, hydrogen is released from the hydrogen storage cylinders (12), and the bottle valve (2) monitors the temperature, pressure, and flow rate to ensure that they are within the required working range. Otherwise, the TPRD or the relief valve is activated to ensure the safety of hydrogen filling and usage. When the temperature at which the TPRD of the bottle valve (2) is located exceeds (110 ± 5) °C, the hydrogen in the hydrogen storage cylinder (12) automatically leaks through the TPRD. The TPRDs are concentrated at the top of the hydrogen supply system and discharged towards the rear of the vehicle to ensure that the released hydrogen is in a ventilated and safe environment and guarantee the safety of hydrogen usage. The pipelines connected to the bottle valve (2) are bent and lengthened to effectively avoid possible relative movement and damage caused by collision and vibration between the hydrogen storage cylinders (12) and various rigid joints, and prevent leakage.

[0042] Specifically, the bottle valve (2) is provided with a temperature sensor and a wiring harness for the temperature sensor. The temperature sensor is linked with the hydrogen controller (5). When the temperature of the hydrogen storage cylinder (12) is higher or lower than a certain value (which can be set), the hydrogen controller (5) alarms and closes the bottle valve (2).

[0043] Specifically, the tail valve (11) is equipped with an over-temperature relief device. The TPRD interfaces of the tail valves (11) of the two hydrogen storage cylinders (12) in the lower row are connected to right-angle elbow joints, and the TPRD interfaces of the tail valves (11) of the four hydrogen storage cylinders (12) in the upper two rows are connected to tee joints. The TPRD discharges of the tail valves (11) of the hydrogen storage cylinders (12) in the left column are connected through pipelines to the right-angle elbow joint and the tee joint and discharged at the top of the hydrogen supply system. The TPRD discharges of the tail valves (11) of the hydrogen storage cylinders (12) in the right column are connected through pipelines to the right-angle elbow joint and the tee joint and discharged at the top of the hydrogen supply system. The TPRD discharge pipelines are bent in an "S" shape. Similarly, when the temperature at which the TPRD of the tail valve (11) is located exceeds (110 ± 5) °C, the hydrogen in the hydrogen storage cylinder (permitted, and the hydrogen controller (5) alarms and closes the bottle valve (2).

[0044] Specifically, the pressure regulating module includes a pressure reducing valve (3), a relief valve (10), and a manual shut-off valve (6). A filter (9) is provided at the front end of the intake port of the pressure reducing valve (3). The outlet of the pressure reducing valve (3) is connected to a low-pressure hydrogen pipeline, and the other end of the low-pressure hydrogen pipeline is connected to a tee. One end of the tee is provided with a relief valve (10), and the other end is provided with a manual shut-off valve (6). The pressure reducing valve (3) is mainly used to regulate the hydrogen pressure and provide hydrogen with appropriate flow and pressure for the fuel cell stack.

[0045] Specifically, the relief valve (10) is connected to a tee at the bottom. One end of the tee of the relief valve (10) is connected to the outlet pipeline of the pressure reducing valve (3), and the other end is connected to the intake metal hose of the fuel cell stack; the relief port of the relief valve (10) is connected to the TPRD discharge pipeline, and the TPRD discharge pipeline extends to the top of the hydrogen supply system for discharge after being bent. When the system pressure exceeds the pressure value set by the customer's requirement, the gas is discharged from the relief port to prevent the pressure reducing valve (3) from failing and causing damage to the components behind the valve, ensuring that the gas pressure entering the fuel cell stack is within an appropriate range and guaranteeing the safety and life of the fuel cell stack.

[0046] Specifically, a female quick connector (8) is provided at the rear end of the manual shut-off valve (6). The manual shut-off valve (6) and the female quick connector (8) are connected through a low-pressure hydrogen pipeline. The manual shut-off valve (6) is arranged on the left side of the hydrogen filling port (7), and the female quick connector (8) is arranged on the right side of the hydrogen filling port (7). The manual shut-off valve (6) manually discharges gas by turning the handle and is commonly used for pipeline replacement, pressure maintenance, and airtightness testing, facilitating system maintenance. The manual shut-off valve (6) is connected to the female quick connector (8) at the back to prevent hydrogen leakage caused by the loosening of the manual shut-off valve (6) or operation errors.

[0047] Specifically, a medium-pressure pressure sensor (4) is provided on the pressure reducing valve (3) for real-time monitoring of the hydrogen pressure at the medium-pressure end. The pressure reducing valve (3) integrates a relief valve (10). When the hydrogen pressure at the medium-pressure interface exceeds the set value, the integrated relief valve (10) releases hydrogen outward to prevent the outlet pressure of the pressure reducing valve (3) from being too high and protecting the components behind the pressure reducing valve (3).

[0048] Specifically, a hydrogen concentration sensor is provided in the top space on the side of the bottle valve (2) and the side of the tail valve (11) of the hydrogen storage cylinder (12). The hydrogen concentration sensor is used for real-time monitoring of whether there is hydrogen leakage in the hydrogen supply system. The hydrogen concentration sensor is linked with a hydrogen controller (5). When the ambient hydrogen concentration exceeds the set value, the hydrogen controller (5) gives a corresponding warning.

[0049] Specifically, the high-pressure pressure sensor (1) is connected to the medium-pressure pressure sensor (4) through a wire harness, and the wire harness is centrally connected to the port of the hydrogen controller (5). The hydrogen controller (5) is arranged at the position adjacent to the hydrogen filling port (7) in the lower left diagonal. The hydrogen controller (5) monitors the current of all electrical components (bottle valve (2), medium-pressure pressure sensor (4), high-pressure pressure sensor (1), hydrogen concentration sensor) in the hydrogen supply system. When a short circuit or open circuit occurs in the electrical component, the hydrogen controller (5) issues an alarm.

[0050] Specifically, the wire harness is fixed to the hydrogen supply system bracket (14) through a special cable tie.

[0051] Specifically, the pipeline is fixed to the hydrogen supply system bracket (14) through a pipe clamp.

[0052] In this article, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of clearly expressing the technical solution and description. Therefore, it cannot be understood as a limitation to the present utility model.

[0053] In this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to including the listed elements, it may also include other elements not specifically listed.

[0054] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hydrogen supply system for a hydrogen fuel cell mining truck, characterized in that, It includes a hydrogen supply system support bracket (14), a hydrogenation module, a pressure regulating module, and a hydrogen fuel cell provided on the hydrogen supply system support bracket (14); the hydrogenation module is connected to a hydrogenation port (7) of a hydrogen storage module through a high-pressure hydrogen pipeline, the outlet end of the hydrogen storage module is connected to the inlet end of the pressure regulating module through a high-pressure hydrogen pipeline, a bottle valve (2) is provided at the connection between the hydrogen storage module and the pressure regulating module, and the outlet end of the pressure regulating module is connected to the hydrogenation end of the hydrogen fuel cell through a low-pressure hydrogen pipeline, and a pressure reducing valve (3) is provided at the connection between the pressure regulating module and the hydrogen fuel cell.

2. The hydrogen supply system for a hydrogen fuel cell mining truck according to claim 1, characterized in that, The hydrogen supply system support bracket (14) includes two mounting beams at the bottom, three columns arranged along the length direction of the mounting beams, a plurality of cross beams arranged along the height direction of the columns, and a plurality of diagonal support brackets provided outside the columns.

3. The hydrogen supply system for a hydrogen fuel cell mining truck according to claim 1, characterized in that, The hydrogenation module includes a hydrogenation port (7) and a one-way valve (13) connected to the hydrogenation port (7) through a high-pressure hydrogen pipeline. The hydrogenation port (7) is fixed to the hydrogen supply system support bracket (14) through a baffle, and the baffle is screwed and fixed to the hydrogen supply system support bracket (14).

4. The hydrogen supply system for a hydrogen fuel cell mining truck according to claim 1, characterized in that, The hydrogen storage module includes hydrogen storage cylinders (12), bottle valves (2), tail valves (11), and high-pressure pressure sensors (1). The hydrogen storage cylinders (no0000012) are arranged in an array. A bottle valve (2) is provided at the inlet end of each hydrogen storage cylinder (12), a tail valve (11) is provided at the outlet end of each hydrogen storage cylinder (12), and a high-pressure pressure sensor (1) is arranged in the bottle valve (2) connected to the hydrogen storage cylinder (12) in the upper left corner.

5. The hydrogen supply system for a hydrogen fuel cell mining truck according to claim 4, wherein, A support sheet metal base matching the contour of the hydrogen storage cylinder (12) is provided on the hydrogen supply system support bracket (14). The hydrogen storage cylinder (12) is arranged on the hydrogen supply system support bracket (14) through the support sheet metal base, and a metal strap is provided on the support sheet metal base. The hydrogen storage cylinder (12) is fixed through the metal strap.

6. The hydrogen supply system for a hydrogen fuel cell mining truck according to claim 4, characterized in that, The bottle valves (2) are connected through a high-pressure hydrogen pipeline. The bottle valve (2) is provided with an over-temperature relief device. The TPRD discharge port of the bottle valve (2) is connected through a hydrogen pipeline. The three TPRD discharge pipelines of the hydrogen storage cylinders (12) in the left column are merged into one pipeline on the left through a pipe joint and discharged centrally to the top of the hydrogen supply system. The three-way TPRD discharge pipeline of the hydrogen storage cylinders (12) in the right column is merged into one pipeline on the right through a pipe joint and discharged centrally to the top of the hydrogen supply system. The pipeline at the top is bent in an "S" shape.

7. The hydrogen supply system for a hydrogen fuel cell mining truck according to claim 4, characterized in that, The tail valve (11) is provided with an over-temperature relief device. The TPRD interface of the tail valve (11) of the hydrogen storage cylinders (12) in the lower row is connected to a right-angle elbow joint. The TPRD interface of the tail valve (11) of the hydrogen storage cylinders (12) in the upper two rows is connected to a three-way joint. The TPRD discharge of the tail valve (11) of the hydrogen storage cylinders (12) in the left column is discharged through a pipeline connecting the right-angle elbow joint and the three-way joint at the top of the hydrogen supply system. The TPRD discharge of the tail valve of the hydrogen storage cylinders in the right column is discharged through a pipeline connecting the right-angle elbow joint and the three-way joint at the top of the hydrogen supply system. The TPRD discharge pipeline is bent in an "S" shape.

8. The hydrogen supply system for a hydrogen fuel cell mining truck according to claim 4, characterized in that, The pressure regulating module includes a pressure reducing valve (3), a relief valve (10), and a manual stop valve (6). A filter (9) is provided at the front end of the inlet of the pressure reducing valve (3). The outlet of the pressure reducing valve (3) is connected to a low-pressure hydrogen pipeline, and the other end of the low-pressure hydrogen pipeline is connected to a tee. One end of the tee is provided with a relief valve (10), and the other end is provided with a manual stop valve (6). The relief valve (10) is connected to a tee below. One end of the relief valve tee is connected to the outlet pipeline of the pressure reducing valve, and the other end is connected to a metal hose for inlet of the stack. The relief port of the relief valve is connected to a TPRD discharge pipeline, and the TPRD discharge pipeline extends to the top of the hydrogen supply system for discharge after bending. A quick-connect female connector (8) is provided at the rear end of the manual stop valve (6). The manual stop valve and the quick-connect female connector are connected through a low-pressure hydrogen pipeline. The manual stop valve is arranged on the left side of the hydrogen filling port, and the quick-connect female connector is arranged on the right side of the hydrogen filling port.

9. The hydrogen supply system for a hydrogen fuel cell mining truck according to claim 5, characterized in that, Four "L"-shaped lifting lugs are welded to the top cross beam of the hydrogen supply system bracket (14). A special rubber pad is provided at the contact between the hydrogen storage cylinder (12) and the metal binding strap, and a base rubber pad is provided at the contact between the support sheet metal base and the hydrogen storage cylinder (12). The bottle valve (2) is provided with a temperature sensor, and the temperature sensor transmits data through a wire harness.

10. The hydrogen supply system for a hydrogen fuel cell mining truck according to claim 8, characterized in that, The pressure reducing valve (3) is provided with a medium-pressure pressure sensor (4). A hydrogen concentration sensor is provided in each of the top spaces on the bottle valve side and the tail valve side of the hydrogen storage cylinder (12). The high-pressure pressure sensor (1) and the medium-pressure pressure sensor (4) are connected through a wire harness, and the wire harness is centrally connected to the port of the hydrogen controller (5). The hydrogen controller (5) is arranged at a position adjacent to the hydrogen filling port in the lower left. The wire harness is fixed to the hydrogen supply system bracket (14) by cable ties. The pipeline is fixed to the hydrogen supply system bracket (14) by pipe clamps.

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