A hydrogen fuel cell powered marine vessel involving a hydrogen ventilation system

Abstract

The utility model discloses a kind of hydrogen fuel cell power ship hydrogen-related ventilation systems, including hydrogen storage device, hydrogen supply device and fuel cell and hydrogen-related unit, hydrogen storage device is arranged in hydrogen storage cabin, hydrogen supply device is set in hydrogen-related valve tank, hydrogen-related valve tank is arranged in hydrogen fuel preparation room, fuel cell and hydrogen-related unit are set in fuel cell power generation device, fuel cell power generation device is arranged in fuel cell cabin;Hydrogen storage device, hydrogen-related valve tank and fuel cell power generation device are connected by hydrogen double-wall pipe;Hydrogen storage cabin, hydrogen fuel preparation room, fuel cell cabin, fuel cell power generation device and hydrogen double-wall pipe are respectively provided with air inlet pipeline and exhaust duct, air inlet pipeline is communicated with main air supply pipe, main air supply pipe is communicated with air supply unit.Sending air to each air inlet pipeline by main air supply pipe for air supply unit, reduce the number of hydrogen-related area ventilation fan, reduce the power consumption of marine auxiliary machinery, while meeting the requirement of each hydrogen-related subarea independent ventilation.

Description

Technical Field

[0001] This utility model relates to the field of marine power technology, and in particular to a hydrogen-powered ventilation system for hydrogen fuel cell-powered ships. Background Technology

[0002] Currently, China's hydrogen-powered ship demonstration applications have achieved positive results. Among them, the "Three Gorges Hydrogen Boat 1" has been operating stably, accumulating a total voyage of over 13,000 kilometers, and has accumulated valuable experience for the commercial operation of hydrogen-powered ships. The "Xihai Xinyuan 1" cruise ship in Jiujiang, the "Lihu Future" transport ship in Dalian, the "Jida Hydrogen Power 1" experimental ship in Fujian, the "Hydrogen Electric Tractor 1" tugboat in Qingdao Port, and the "Dongfang Hydrogen Port" 64TEU hydrogen fuel cell-powered container ship in Jiaxing have been launched one after another. Various ship types will carry out demonstration operations in inland waterways, lakes, and coastal waters, and the development of hydrogen fuel cell-powered ships is showing a rapid growth trend.

[0003] In the actual operation of the aforementioned hydrogen-powered ships, to ensure ship safety, high-power ventilation fans are generally installed in hydrogen-related areas, and some areas require long-term ventilation. To meet the classification requirements of the China Classification Society for hydrogen-powered ships, the ventilation requirements for each hydrogen-related area are independent and redundant. Generally, the hydrogen ventilation system of hydrogen fuel cell-powered ships sets up independent fans and ducts for each hydrogen-related area. The number of fans is large and the ducts are complex. This also indirectly leads to higher power consumption of ship auxiliary machinery that powers the fans than ships with other power forms, which hinders the promotion of hydrogen-powered ships. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a hydrogen-powered ship hydrogen-related ventilation system, which at least solves the problems of a large number of ventilation fans and high power consumption of ship auxiliary machinery in hydrogen-related areas, while meeting the independent ventilation requirements of each hydrogen-related sub-area.

[0005] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: A hydrogen-powered ship hydrogen-related ventilation system includes a hydrogen storage device, a hydrogen supply device, a fuel cell, and a hydrogen-related unit. The hydrogen storage device is arranged in a hydrogen storage tank, the hydrogen supply device is arranged in a hydrogen-related valve box, the hydrogen-related valve box is arranged in a hydrogen fuel preparation room, the fuel cell and hydrogen-related unit are arranged in a fuel cell power generation device, and the fuel cell power generation device is arranged in a fuel cell compartment. The hydrogen storage device, the hydrogen-related valve box, and the fuel cell power generation device are connected by a hydrogen double-walled pipe. The hydrogen storage tank, the hydrogen fuel preparation room, the fuel cell compartment, the fuel cell power generation device, and the hydrogen double-walled pipe are respectively provided with air inlet pipes and air outlet pipes. The air inlet pipe is connected to the main air supply pipe, and the main air supply pipe is connected to the air supply unit.

[0006] The air intake duct includes a hydrogen storage chamber air intake pipe installed on the hydrogen storage chamber, a hydrogen double-walled pipe air intake pipe installed on the hydrogen double-walled pipe, a hydrogen fuel preparation chamber air intake pipe installed on the hydrogen fuel preparation chamber, a fuel cell power generation device air intake pipe installed on the fuel cell power generation device, and a fuel cell compartment air intake pipe installed on the fuel cell compartment; the hydrogen storage chamber air intake pipe, the hydrogen double-walled pipe air intake pipe, the hydrogen fuel preparation chamber air intake pipe, the fuel cell power generation device air intake pipe, and the fuel cell compartment air intake pipe are connected to the main air supply duct.

[0007] The exhaust duct includes a hydrogen storage chamber exhaust pipe installed on the hydrogen storage chamber, a hydrogen double-wall pipe exhaust pipe installed on the hydrogen double-wall pipe, a hydrogen fuel preparation chamber exhaust pipe installed on the hydrogen fuel preparation chamber, a fuel cell power generation device exhaust pipe installed on the fuel cell power generation device, and a fuel cell compartment exhaust pipe installed on the fuel cell compartment.

[0008] The air inlet pipe and the air supply device are installed opposite each other, and the hydrogen double-wall pipe inlet pipe is located at one end of the hydrogen double-wall pipe, while the hydrogen double-wall pipe outlet pipe is located at the other end of the hydrogen double-wall pipe.

[0009] The exhaust duct is equipped with a hydrogen concentration sensor and a wind pressure sensor.

[0010] Both the hydrogen concentration sensor and the wind pressure sensor are electrically connected to the controller, and the air supply unit is electrically integrated with the controller.

[0011] A control valve is installed on the main air supply pipe on the downstream side of the air inlet pipe of the hydrogen storage chamber.

[0012] Each air intake duct is equipped with a check valve, which controls the air in the air intake duct to flow unidirectionally downstream.

[0013] The air supply unit includes multiple first explosion-proof fans and multiple second explosion-proof fans. The air outlet pipes of the first and second explosion-proof fans are connected to the main air supply pipe. Check valves are installed on the air outlet pipes of the first and second explosion-proof fans. The check valves control the air in the air inlet pipe to flow to one end of the main air supply pipe.

[0014] A filter structure is installed on the exhaust duct; the filter structure includes a purification pipe, which is arranged longitudinally. The outlet section of the exhaust duct is inclined downward and connected to the purification pipe. A filter device is installed on the purification pipe above the exhaust duct. A spray pipe is installed inside the purification pipe above the filter device. A first control valve is installed after the water inlet pipe of the spray pipe extends out of the purification pipe. A second control valve is installed at the bottom of the purification pipe.

[0015] The features of this utility model using the above-mentioned technical solution are: 1. The air supply unit of this utility model supplies air to each air inlet pipe through the main air supply pipe, which reduces the number of ventilation fans in the hydrogen-related area, reduces the power consumption of ship auxiliary machinery, and at the same time meets the independent ventilation requirements of each hydrogen-related sub-area.

[0016] 2. This utility model adopts a staged ventilation method. During the non-operation phase of the fuel cell system, a low-power fan is used to ventilate the hydrogen storage chamber independently, while a high-power fan is used to ventilate all hydrogen-related areas during the non-operation phase of the fuel cell system, which can effectively reduce the power consumption of auxiliary equipment.

[0017] 3. This utility model utilizes check valves to achieve independent ventilation in each hydrogen-related area, which can effectively simplify the air duct, save space and reduce costs.

[0018] 4. This utility model adopts a method of monitoring hydrogen concentration and ventilation pressure to monitor the ventilation status in real time and ensure the safety of the entire ship. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the system structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the filtration device in this utility model.

[0022] Figure label: Hydrogen storage tank 1, hydrogen storage device 2, hydrogen fuel preparation room 3, hydrogen supply device 4, fuel cell compartment 5, fuel cell power generation device 6, hydrogen double-walled pipe 7, hydrogen-related valve box 8, first explosion-proof fan A9, first explosion-proof fan B10, second explosion-proof fan A11, second explosion-proof fan B12, control valve 13, first check valve 14, second check valve 15, third check valve 16, fourth check valve 17, fifth check valve 18, first hydrogen concentration sensor 19, second hydrogen concentration sensor 20, third hydrogen concentration sensor 21, fourth hydrogen concentration sensor 22, fifth hydrogen concentration sensor 23, first air pressure sensor 24, second air pressure sensor 25, third air pressure sensor 26, fourth air pressure sensor 27, fifth air pressure sensor 28, fuel cell control system 29. Fuel cell and hydrogen-related unit 30, hydrogen storage chamber air inlet pipe 31, hydrogen double-wall pipe air inlet pipe 32, hydrogen fuel preparation room air inlet pipe 33, fuel cell power generation device air inlet pipe 34, fuel cell chamber air inlet pipe 35; hydrogen storage chamber air outlet pipe 36, hydrogen fuel preparation room air outlet pipe 37, hydrogen double-wall pipe air outlet pipe 38, fuel cell chamber air outlet pipe 39, fuel cell power generation device air outlet pipe 40. Purification pipe 100, reducing pipe 101, second control valve 102, filter device 200, filter pipe 201, filter element 202, heating wire 203, spray pipe 300, first control valve 301, exhaust fan 400. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0025] Example 1: See Figure 1 A hydrogen-powered ship hydrogen-related ventilation system includes a hydrogen storage device 2, a hydrogen supply device 4, and a fuel cell and hydrogen-related unit 30. The hydrogen storage device 2 is located in a hydrogen storage chamber 1, the hydrogen supply device 4 is located in a hydrogen-related valve box 8, which is located in a hydrogen fuel preparation room 3, and the fuel cell and hydrogen-related unit 30 is located in a fuel cell power generation device 6, which is located in a fuel cell compartment 5. The hydrogen storage device 2, the hydrogen-related valve box 8, and the fuel cell power generation device 6 are connected by a hydrogen double-walled pipe 7. Air inlet pipes and exhaust pipes are respectively installed on the hydrogen storage chamber 1, the hydrogen fuel preparation room 3, the fuel cell compartment 5, the fuel cell power generation device 6, and the hydrogen double-walled pipe 7. The air inlet pipes are connected to the main air supply pipe, which is connected to the air supply unit. The air supply unit supplies air to each air inlet pipe through the main air supply pipe, reducing the number of ventilation fans in the hydrogen-related areas, lowering the power consumption of ship auxiliary machinery, and simultaneously meeting the independent ventilation requirements of each hydrogen-related area.

[0026] In this embodiment, see Figure 1The air intake duct includes a hydrogen storage chamber air intake pipe 31 installed on the hydrogen storage chamber 1, a hydrogen double-walled pipe air intake pipe 32 installed on the hydrogen double-walled pipe 7, a hydrogen fuel preparation chamber air intake pipe 33 installed on the hydrogen fuel preparation chamber 3, a fuel cell power generation device air intake pipe 34 installed on the fuel cell power generation device 6, and a fuel cell compartment air intake pipe 35 installed on the fuel cell compartment 5; the hydrogen storage chamber air intake pipe 31, the hydrogen double-walled pipe air intake pipe 32, the hydrogen fuel preparation chamber air intake pipe 33, the fuel cell power generation device air intake pipe 34, and the fuel cell compartment air intake pipe 35 are connected to the main air supply pipe.

[0027] The exhaust duct includes a hydrogen storage chamber exhaust pipe 36 installed on the hydrogen storage chamber 1, a hydrogen double-wall pipe exhaust pipe 38 installed on the hydrogen double-wall pipe 7, a hydrogen fuel preparation chamber exhaust pipe 37 installed on the hydrogen fuel preparation chamber 3, a fuel cell power generation device exhaust pipe 40 installed on the fuel cell power generation device 6, and a fuel cell compartment exhaust pipe 39 installed on the fuel cell compartment 5.

[0028] Furthermore, the air inlet pipe and the air supply device are installed in opposite positions, and the hydrogen double-wall pipe inlet pipe 32 is located at one end of the hydrogen double-wall pipe 7, while the hydrogen double-wall pipe outlet pipe 38 is located at the other end of the hydrogen double-wall pipe 7.

[0029] Example 2: Based on Example 1, see Figure 1 A hydrogen concentration sensor and a wind pressure sensor are installed on the exhaust duct. Both the hydrogen concentration sensor and the wind pressure sensor are electrically connected to the fuel cell control system 29, and the air supply unit is electrically connected to the fuel cell control system 29.

[0030] During the operation of the fuel cell system, if the hydrogen concentration sensor detects abnormal data, the fuel cell control system 29 issues an alarm and automatically controls the hydrogen supply device 4 to cut off the hydrogen fuel supply, causing the fuel cell power generation device 6 to shut down. If the wind pressure sensor detects abnormal data, the fuel cell control system 29 issues an alarm and automatically controls the standby fan in the air supply unit to start operation.

[0031] In this embodiment, see Figure 1 The hydrogen concentration sensors include a first hydrogen concentration sensor 19 installed on the hydrogen storage chamber outlet duct 36, a second hydrogen concentration sensor 20 installed on the hydrogen fuel preparation chamber outlet duct 37, a third hydrogen concentration sensor 21 installed on the hydrogen double-walled tube outlet duct 38, a fourth hydrogen concentration sensor 22 installed on the fuel cell chamber outlet duct 39, and a fifth hydrogen concentration sensor 23 installed on the fuel cell power generation device outlet duct 40.

[0032] The wind pressure sensors include a first wind pressure sensor 24 installed on the hydrogen storage chamber outlet duct 36, a second wind pressure sensor 25 installed on the hydrogen fuel preparation chamber outlet duct 37, a third wind pressure sensor 26 installed on the hydrogen double-walled tube outlet duct 38, a fourth wind pressure sensor 27 installed on the fuel cell chamber outlet duct 39, and a fifth wind pressure sensor 28 installed on the fuel cell power generation device outlet duct 40.

[0033] The fuel cell control system 29 is an existing control system for fuel cell systems. In this embodiment, a hydrogen concentration sensor and a wind pressure sensor are connected to the fuel cell control system 29.

[0034] Example 3: Based on Example 1 or Example 2, a control valve 13 is installed on the main air supply pipe on the downstream side of the air inlet pipe of the hydrogen storage chamber 1.

[0035] When the fuel cell system is not in operation, nitrogen is generally used to purge and inertate the unreacted hydrogen in the fuel cell system. At this time, the hydrogen supply device 4, hydrogen double-walled pipe 7, fuel cell, and hydrogen-related unit 30 should not contain hydrogen. Therefore, it is not necessary to purge the hydrogen fuel preparation room 3, fuel cell power generation device 6, hydrogen double-walled pipe 7, and hydrogen-related valve box 8. At this time, the electric valve 13 is closed, and the air output from the air supply unit only flows to the hydrogen storage chamber inlet pipe 31. The purged air is discharged through the hydrogen storage chamber outlet pipe 36.

[0036] Furthermore, check valves are installed on the air intake ducts. The check valves control the air in the air intake ducts to flow unidirectionally downstream, thereby enabling independent ventilation in each hydrogen-related area.

[0037] In this embodiment, the check valves include a first check valve 14 installed on the hydrogen storage chamber air inlet pipe 31, a second check valve 15 installed on the hydrogen double-walled pipe air inlet pipe 32, a third check valve 16 installed on the hydrogen fuel preparation chamber air inlet pipe 33, a fourth check valve 17 installed on the fuel cell power generation device air inlet pipe 34, and a fifth check valve 18 installed on the fuel cell chamber air inlet pipe 35.

[0038] Example 4: Based on Example 1, Example 2, or Example 3, see [link to example]. Figure 1 The air supply unit includes multiple first explosion-proof fans and multiple second explosion-proof fans. The outlet pipes of the first and second explosion-proof fans are connected to the main air supply pipe. Check valves are installed on the outlet pipes of the first and second explosion-proof fans. The check valves control the air in the inlet pipe to flow to one end of the main air supply pipe. The power of the first explosion-proof fan is greater than that of the second explosion-proof fan.

[0039] The first and second explosion-proof fans are both set up with one in use and one on standby. One first explosion-proof fan and one second explosion-proof fan form a group. When one group of fans fails, the standby fan can provide 100% ventilation capacity.

[0040] Example 5: Based on Example 1, Example 2, Example 3, or Example 4, see [link to example]. Figure 2 The exhaust duct is equipped with a filter structure to filter the gas discharged into the environment.

[0041] Specifically, see Figure 2 The filtration structure includes a purification pipe 100, which is arranged longitudinally. The outlet section of the exhaust duct is inclined downward and connected to the purification pipe 100. A filter device 200 is installed above the exhaust duct on the purification pipe 100. A spray pipe 300 is installed inside the purification pipe 100 above the filter device 200. A first control valve 301 is installed after the water inlet pipe of the spray pipe 300 extends out of the purification pipe 100. A second control valve 102 is installed at the bottom of the purification pipe 100.

[0042] In this embodiment, the filtration device 200 includes a filter tube 201, a filter element 202, and a heating wire 203. The filter element 18 is installed inside the filter tube 201. The filter element 18 is made of glass fiber, and stainless steel mesh covers are provided on the upper and lower sides of the glass fiber. The stainless steel mesh covers are installed on the inner wall of the filter tube 201 by bolts or welding. The heating wire 203 is wound around the outside of the filter tube 201 and is electrically connected to a power source. Flanges are installed at the upper and lower ends of the filter tube 201, and the filter tube 201 is connected to the purification tube 100 through the flanges. A spray pipe 300 is installed inside the purification tube 100 above the filtration device 200. The spray pipe 300 is used to spray the filter element 202. A first control valve 301 is used to control the opening and closing of the pressurized water. The first control valve 301 can be an electric ball valve.

[0043] After prolonged use, the first control valve 301 and the second control valve 102 are opened, and the spray pipe 300 sprays water onto the filter element 202 for cleaning. The cleaning water is discharged from the second control valve 102. After cleaning the filter element 202, the heating wire 203 heats the metal filter tube 201, and the filter tube 201 heats up to dry the filter element 18.

[0044] When not being cleaned, both the first control valve 301 and the second control valve 102 are closed, and air is discharged from the top of the purification pipe 100.

[0045] In this embodiment, the lower end of the purification pipe 100 is connected to a reducing pipe 101, and the lower end of the reducing pipe 101 is bolted to a second control valve 102 via a flange.

[0046] Because of the addition of the filter device 200, there is resistance to the exhaust of internal air. Therefore, an exhaust fan 400 is also installed at the top of the filter pipe 201.

[0047] Of course, the filter device 200 can also directly adopt the filter device in CN116573133B. When applied to this patent, a second control valve 10 is installed at the lower end of the drain pipe.

[0048] The working principle or process of the utility model: like Figure 1 As shown, when the fuel cell system is in operation, control valve 13 is opened, and one of the first explosion-proof fans A9 and B10 starts running. After pressurization, the air flows through the first check valve 14 to the hydrogen storage chamber inlet pipe 31 to purge the hydrogen storage chamber 1. The purged air is then discharged through the hydrogen storage chamber outlet pipe 36. After pressurization, the air flows through the second check valve 15 to the hydrogen double-wall pipe inlet pipe 32 to purge the hydrogen double-wall pipe 7 and the hydrogen-related valve box 8. The purged air is then discharged through the hydrogen double-wall pipe outlet pipe 38. After pressurization, the air flows through the third check valve 16 to the hydrogen fuel preparation room inlet pipe 33 to purge the hydrogen fuel preparation room 3. The purged air is then discharged through the hydrogen fuel preparation room outlet pipe 37. After pressurization, the air flows through the fourth check valve 17 to the fuel cell power generation device inlet pipe 34 to purge the fuel cell power generation device 6. The purged air is then discharged through the fuel cell power generation device outlet pipe 40. After pressurization, the air flows through the fifth check valve 18 to the fuel cell compartment inlet pipe 35 to purge the fuel cell compartment 5. The purged air is then discharged through the fuel cell compartment outlet pipe 39.

[0049] When the fuel cell system is in operation, if one or more of the detection data of the first hydrogen concentration sensor 19, the second hydrogen concentration sensor 20, the third hydrogen concentration sensor 21, the fourth hydrogen concentration sensor 22, and the fifth hydrogen concentration sensor 23 are abnormal, the fuel cell control system 29 will issue an alarm and automatically control the hydrogen supply device 4 to cut off the hydrogen fuel supply, causing the fuel cell power generation device 6 to stop. If the detection data of the first wind pressure sensor 24, the second wind pressure sensor 25, the third wind pressure sensor 26, the fourth wind pressure sensor 27, and the fifth wind pressure sensor 28 are abnormal, the fuel cell control system 29 will issue an alarm and automatically control the standby fan in the first explosion-proof fan A9 or the first explosion-proof fan B10 that was not running to start.

[0050] When the fuel cell system is not in operation, nitrogen is generally used to purge and inertate the unreacted hydrogen in the fuel cell system. At this time, the hydrogen supply device 4, hydrogen double-walled pipe 7, fuel cell, and hydrogen-related unit 30 should not contain hydrogen. Therefore, it is not necessary to purge the hydrogen fuel preparation room 3, fuel cell power generation device 6, hydrogen double-walled pipe 7, and hydrogen-related valve box 8. At this time, control valve 13 is closed, and the second explosion-proof fan A11 or the second explosion-proof fan B12 is running. The air is pressurized and then passed through check valve 14 to the hydrogen storage chamber inlet pipe 31. The purged air is discharged through the hydrogen storage chamber outlet pipe 36.

[0051] When the fuel cell system is not in operation, if the data detected by the first hydrogen concentration sensor 19 is abnormal, the fuel cell control system 29 will issue an alarm. At this time, manual emergency measures will be taken according to the hydrogen leakage situation. If the data detected by the first wind pressure sensor 24 is abnormal, the fuel cell control system 29 will issue an alarm and automatically control the second explosion-proof fan A11 and the second explosion-proof fan B12, of which the standby fan that was not running will start to run.

[0052] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Any modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A hydrogen-powered ship hydrogen ventilation system, comprising a hydrogen storage device (2), a hydrogen supply device (4), and a fuel cell and hydrogen-related unit (30), characterized in that: The hydrogen storage device (2) is arranged in the hydrogen storage chamber (1). The hydrogen supply device (4) is installed in the hydrogen-related valve box (8), which is located in the hydrogen fuel preparation room (3). The fuel cell and hydrogen-related unit (30) are installed in the fuel cell power generation device (6), and the fuel cell power generation device (6) is arranged in the fuel cell compartment (5); The hydrogen storage device (2), the hydrogen-related valve box (8), and the fuel cell power generation device (6) are connected by a hydrogen double-walled pipe (7); The hydrogen storage chamber (1), hydrogen fuel preparation room (3), fuel cell chamber (5), fuel cell power generation device (6) and hydrogen double-wall pipe (7) are respectively equipped with air inlet pipe and air outlet pipe. The air inlet pipe is connected to the main air supply pipe, and the main air supply pipe is connected to the air supply unit.

2. The hydrogen-powered ventilation system for hydrogen fuel cell-powered ships according to claim 1, characterized in that: The air inlet pipes include a hydrogen storage chamber air inlet pipe (31) installed on the hydrogen storage chamber (1), a hydrogen double-wall pipe air inlet pipe (32) installed on the hydrogen double-wall pipe (7), a hydrogen fuel preparation chamber air inlet pipe (33) installed on the hydrogen fuel preparation chamber (3), a fuel cell power generation device air inlet pipe (34) installed on the fuel cell power generation device (6), and a fuel cell compartment air inlet pipe (35) installed on the fuel cell compartment (5); the hydrogen storage chamber air inlet pipe (31), the hydrogen double-wall pipe air inlet pipe (32), the hydrogen fuel preparation chamber air inlet pipe (33), the fuel cell power generation device air inlet pipe (34), and the fuel cell compartment air inlet pipe (35) are connected to the main air supply pipe.

3. A hydrogen-powered ship hydrogen ventilation system according to claim 2, characterized in that: The exhaust duct includes a hydrogen storage chamber exhaust pipe (36) installed on the hydrogen storage chamber (1), a hydrogen double-wall pipe exhaust pipe (38) installed on the hydrogen double-wall pipe (7), a hydrogen fuel preparation chamber exhaust pipe (37) installed on the hydrogen fuel preparation chamber (3), a fuel cell power generation device exhaust pipe (40) installed on the fuel cell power generation device (6), and a fuel cell chamber exhaust pipe (39) installed on the fuel cell chamber (5).

4. A hydrogen-powered ship hydrogen ventilation system according to claim 3, characterized in that: The air inlet pipe and the air supply device are installed opposite each other, and the hydrogen double-wall pipe inlet pipe (32) is located at one end of the hydrogen double-wall pipe (7), and the hydrogen double-wall pipe outlet pipe (38) is located at the other end of the hydrogen double-wall pipe (7).

5. A hydrogen-powered ship hydrogen ventilation system according to any one of claims 1 to 4, characterized in that: The exhaust duct is equipped with a hydrogen concentration sensor and a wind pressure sensor.

6. A hydrogen-powered ship hydrogen ventilation system according to claim 5, characterized in that: The hydrogen concentration sensor and the wind pressure sensor are both electrically connected to the fuel cell control system (29), and the air supply unit is electrically connected to the fuel cell control system (29).

7. A hydrogen-powered ship hydrogen ventilation system according to any one of claims 1 to 4, characterized in that: A control valve (13) is installed on the main air supply pipe on the downstream side of the air inlet pipe of the hydrogen storage chamber (1).

8. A hydrogen-powered ship hydrogen ventilation system according to any one of claims 1 to 4, characterized in that: Each air intake duct is equipped with a check valve, which controls the air in the air intake duct to flow unidirectionally downstream.

9. A hydrogen-powered ship hydrogen ventilation system according to claim 1, characterized in that: The air supply unit includes multiple first explosion-proof fans and multiple second explosion-proof fans. The air outlet pipes of the first and second explosion-proof fans are connected to the main air supply pipe. Check valves are installed on the air outlet pipes of the first and second explosion-proof fans. The check valves control the air in the air inlet pipe to flow to one end of the main air supply pipe. The power of the first explosion-proof fan is greater than that of the second explosion-proof fan.

10. A hydrogen-powered ship hydrogen ventilation system according to claim 1, characterized in that: A filter structure is installed on the exhaust duct; the filter structure includes a purification pipe (100), which is arranged longitudinally. The outlet section of the exhaust duct is inclined downward and connected to the purification pipe (100). A filter device (200) is installed on the purification pipe (100) above the exhaust duct. A spray pipe (300) is installed inside the purification pipe (100) above the filter device (200). A first control valve (301) is installed after the water inlet pipe of the spray pipe (300) extends out of the purification pipe (100). A second control valve (102) is installed at the bottom of the purification pipe (100).

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