Drainage system of marine fuel cell

Abstract

The utility model discloses a drainage system of a marine fuel cell, which relates to the technical field of ship equipment and comprises a fuel cell, a water collector and a lifting drainage component. The fuel cell is provided with a discharge pipe for discharging waste water and waste gas; the discharge pipe is communicated with the water collector; the lifting drainage assembly comprises a water suction pump, a water suction pipe, a water tank and a drainage pipe, the water suction pump is located in the water collector, and the two ends of the water suction pipe communicate with the water suction pump and the water tank correspondingly, so that the water suction pump can pump waste water in the water collector to the water tank for storage; the water tank is located above the water level outside the ship, so that waste water in the water tank can be discharged out of the ship by virtue of self gravity, the waste water discharging convenience of the fuel cell is improved, the risk of waste water backflow caused by the fact that the fuel cell cannot discharge the waste water is reduced, the waste water in the water tank can be supplied to the ship for recycling, and the resource utilization rate is improved.

Description

A drainage system for marine fuel cells Technical Field

[0001] This utility model relates to the field of marine equipment technology, and in particular to a drainage system for marine fuel cells. Background Technology

[0002] Hydrogen fuel cells are generally widely used in marine propulsion systems due to their high efficiency, low emissions, and environmental friendliness. However, in small vessels, the fuel cells are often installed in the engine room below the waterline, causing the fuel cell's drain outlet to be below the ship's drainage line. This makes it difficult to discharge wastewater generated by the fuel cells outside the ship, and the wastewater can easily flow back into the fuel cells, increasing the risk of damage. Summary of the Invention

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a drainage system for marine fuel cells that facilitates the discharge of fuel cell wastewater and allows the wastewater to be recycled within the ship.

[0004] According to an embodiment of the present invention, a drainage system for a marine fuel cell is provided, comprising: a fuel cell, a water collector, and a lifting and drainage assembly; the fuel cell has a discharge pipe for discharging wastewater and exhaust gas; the discharge pipe is connected to the water collector; the lifting and drainage assembly includes a pump, a pumping pipe, a water tank, and a drain pipe, the pump being located inside the water collector, the two ends of the pumping pipe being connected to the pump and the water tank respectively, so that the pump can draw wastewater from the water collector into the water tank for storage, one end of the drain pipe being connected to the water tank, and the other end being connected to the outside of the ship, and the water tank being arranged above the waterline outside the ship, so that the wastewater in the water tank can be discharged to the outside of the ship by its own gravity.

[0005] The drainage system for a marine fuel cell described in this utility model has at least the following beneficial effects: wastewater generated by the fuel cell enters a water collector through a discharge pipe. A water pump can directly draw the wastewater from the water collector into a water tank for storage. Since the water tank is located above the waterline outside the ship, the wastewater in the tank can be discharged outside the ship by its own gravity, improving the convenience of wastewater discharge from the fuel cell, reducing the risk of wastewater backflow due to the inability to discharge wastewater from the fuel cell, and the wastewater in the water tank can be supplied for recycling inside the ship, improving resource utilization.

[0006] According to the present invention, a drainage system for a marine fuel cell includes a water collector having a first chamber and a second chamber, the first chamber being located above the second chamber, the volume of the second chamber being smaller than the volume of the first chamber, a water pump being located in the second chamber, and a discharge pipe being connected to the first chamber.

[0007] According to the present invention, a drainage system for a marine fuel cell is provided at the bottom of the first chamber, the guide section is arranged inclined to the water level outside the ship, and the guide section is connected to the second chamber.

[0008] The drainage system for a marine fuel cell according to the present invention further includes an inlet pipe, the two ends of which are respectively connected to the outlet pipe and the water collector, and the inlet pipe is located below the outlet pipe.

[0009] According to the present invention, a drainage system for a marine fuel cell has an inlet pipe whose inner diameter gradually decreases from top to bottom.

[0010] According to the present invention, a drainage system for a marine fuel cell includes an inlet pipe comprising a constriction section and an extension section that are interconnected. The constriction section is connected to the outlet pipe and located below the outlet pipe. The inner diameter of the constriction section gradually decreases from top to bottom. The extension section extends into the water collector and is located in the upper region of the water collector.

[0011] The drainage system for a marine fuel cell according to the present invention further includes an exhaust pipe, one end of which is connected to the discharge pipe and the other end of which is connected to the outside of the ship.

[0012] According to the present invention, in a drainage system for a marine fuel cell, the connection between the water tank and the pumping pipe is located above the connection between the water tank and the drain pipe.

[0013] According to the present invention, a drainage system for a marine fuel cell is provided in the pumping pipe, wherein the first check valve is provided in the pumping pipe to prevent water in the pumping pipe from flowing back to the water collector; and a second check valve is provided in the draining pipe to prevent water outside the draining pipe from flowing back to the water tank.

[0014] A drainage system for a marine fuel cell according to this utility model further includes a controller for driving the water pump, an attitude sensor for monitoring the ship's tilt, and a water level sensor inside the water collector for detecting the water level height inside the water collector. The attitude sensor and the water level sensor are connected to the controller via a communication interface.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 is a schematic diagram of the drainage system of a marine fuel cell in an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the drainage system of a marine fuel cell in another embodiment of the present invention;

[0019] Figure 3 is an enlarged view of part A in Figure 2;

[0020] Figure 4 is an enlarged view of part B in Figure 3;

[0021] Figure 5 is an enlarged view of part C in Figure 2.

[0022] Figure label:

[0023] Fuel cell 100; Emission pipe 110; Exhaust pipe 120;

[0024] Water collector 200; first chamber 210; guide section 211; second chamber 220; support 230;

[0025] 300; 310; 320; 330; 340; 300; 300; 300;

[0026] Inlet pipe 400; contraction section 410; extension section 420;

[0027] First check valve 500;

[0028] Second check valve 600;

[0029] Water level sensor 700;

[0030] Controller 800;

[0031] The water level outside the ship is 900. Detailed Implementation

[0032] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] In existing technologies, hydrogen fuel cells possess advantages such as high efficiency and low emissions, making them widely used in marine propulsion systems. In small vessels, the fuel cell is installed in the engine room below the waterline, resulting in the fuel cell's drain outlet being below the hull's drainage line. This makes it difficult to discharge wastewater generated by the fuel cell outside the ship, and wastewater can easily flow back into the fuel cell, increasing the risk of fuel cell damage. When the ship's navigation environment is unstable, causing the hull to tilt, wastewater can easily flow back into the fuel cell, and the tilting of the hull affects the drainage efficiency of the pumping system, making it difficult to discharge fuel water from the fuel cell in a timely manner. Therefore, some embodiments of this utility model propose a drainage system for marine fuel cells, which will be specifically described with reference to Figures 1 to 5.

[0037] Referring to Figures 1 and 2, an embodiment of this utility model provides a drainage system for a marine fuel cell, applied to a ship. The drainage system includes a fuel cell 100, a water collector 200, and a lift-drainage assembly 300. The drainage system has a vertical orientation. The fuel cell 100 has a discharge pipe 110 for discharging wastewater and exhaust gas. The discharge pipe 110 is connected to the water collector 200, allowing wastewater generated by the fuel cell 100 to enter the water collector 200 through the discharge pipe 110. The lift-drainage assembly 300 includes a pump 310, a pumping pipe 320, a water tank 330, and a drain pipe 340. The pump 310 is located inside the water collector 200. The two ends of the pumping pipe 320 are connected to the pump 310 and the water tank 330, respectively, so that the pump 310 draws wastewater from the water collector 200 into the water tank 330 for storage. One end of the drain pipe 340 is connected to the water tank 330, and the other end is connected to the outside of the ship. The water tank 330 is located above the waterline 900 outside the ship. Wastewater generated by the fuel cell 100 enters the water collector 200 through the discharge pipe 110. The water pump 310 can draw the wastewater from the water collector 200 into the water tank 330 for storage. Since the water tank 330 is located above the waterline 900 outside the ship, the wastewater in the water tank 330 can be discharged outside the ship by its own gravity, which improves the convenience of wastewater discharge from the fuel cell 100, reduces the risk of wastewater backflow caused by the inability of the fuel cell 100 to discharge wastewater, and the wastewater in the water tank 330 can be supplied for internal recycling within the ship, improving resource utilization.

[0038] Referring to Figures 1, 2, and 3, in some embodiments of this utility model, the water collector 200 has a first chamber 210 and a second chamber 220. A discharge pipe 110 is connected to the first chamber 210, meaning the connection between the discharge pipe 110 and the water collector 200 is located in the first chamber 210. The first chambers 210 are interconnected, and the first chamber 210 is located above the second chamber 220. The volume of the second chamber 220 is smaller than the volume of the first chamber 210, creating a structure that is wider at the top and narrower at the bottom between the first and second chambers 210. This structure, where the water collector 200 is wider at the top and narrower at the bottom, allows wastewater in the water collector 200 to concentrate in the second chamber 220 due to gravity when the ship tilts. This reduces the likelihood of wastewater reaching the wall of the first chamber 210 when the ship tilts, thereby reducing the risk of wastewater flowing back from the water collector 200 to the fuel cell 100 and improving the safety of a marine fuel cell drainage system. The connection between the discharge pipe 110 and the water collector 200 is located in the upper region of the first chamber 210, which reduces the possibility of wastewater reaching the connection between the discharge pipe 110 and the water collector 200, and further reduces the risk of wastewater flowing back to the discharge pipe 110 when the hull tilts.

[0039] Referring to Figure 3, in some embodiments of this utility model, the water pump 310 is located in the second chamber 220. Because the first chamber 210 and the second chamber 220 form a structure that is wider at the top and narrower at the bottom, the wastewater in the water collector 200 is concentrated in the second chamber 220 by its own gravity. Since the volume of the second chamber 220 is small, and the water pump 310 is located within it, as the water pump 310 continues to pump water after being turned on, the wastewater in the water collector 200 continuously accumulates in the second chamber 220 by its own gravity. This maintains contact between the water pump 310 and the wastewater, improving the pumping efficiency of the water pump 310. Simultaneously, because the wastewater is concentrated in the second chamber 220 by its own gravity when the ship tilts, the risk of the water pump 310 failing to pump water during tilting is reduced, as is the risk of wastewater not being discharged during tilting. Understandably, when the hull tilts, the water pump 310 can promptly pump the wastewater in the water collector 200 to the water tank 330, thereby reducing the amount of wastewater in the water tank 330 and lowering the risk of wastewater flowing back along the inner wall of the water tank 330 to the fuel cell 100, thus improving the reliability of a marine fuel cell drainage system.

[0040] Referring to Figure 3, in some embodiments of this utility model, the first chamber 210 is provided with a guide section 211. The guide section 211 is inclined to the water level line 900 outside the ship, and the inner diameter of the guide section 211 gradually decreases from top to bottom. The guide section 211 is located at the bottom of the first chamber 210 and is connected to the second chamber 220. This facilitates the wastewater in the first chamber 210 to converge into the second chamber 220 along the guide section 211. As a result, the wastewater can gradually converge into the second chamber 220 under its own gravity, which facilitates the wastewater to concentrate in the second chamber 220 and maintain contact with the water pump 310, thereby improving the pumping efficiency of the water pump 310 and reducing the risk of wastewater backflow into the discharge pipe 110. Meanwhile, when the ship tilts, the wastewater can still converge in the second chamber 220 along the guide section 211, which makes it easier for the wastewater to be concentrated in the second chamber 220 and keep in contact with the water pump 310. This reduces the risk that the wastewater will be difficult to pump out of the collector 200 when the ship tilts, and thus reduces the risk of the wastewater flowing back into the fuel cell 100.

[0041] Referring to Figures 2 and 3, in some embodiments of this utility model, a drainage system for a marine fuel cell further includes an inlet pipe 400. The two ends of the inlet pipe 400 are connected to an outlet pipe 110 and a water collector 200, respectively. The inlet pipe 400 is located below the outlet pipe 110. Wastewater generated by the fuel cell 100 enters the inlet pipe 400 through the outlet pipe 110 and then enters the water collector. Because the inlet pipe 400 is located below the outlet pipe 110, the wastewater in the outlet pipe 110 enters the inlet pipe 400 by its own gravity. The inlet pipe 400 is connected to the first chamber 210 and is located above the first chamber 210, reducing the probability of wastewater in the water collector 200 flowing back along the inner wall to the inlet pipe 400, thereby reducing the possibility of wastewater flowing back into the fuel cell 100.

[0042] It is understood that in some embodiments of this utility model, the inner diameter of the inlet pipe 400 gradually decreases from top to bottom. When wastewater from the outlet pipe 110 flows into the inlet pipe 400, the wastewater located on the wall of the inlet pipe 400 flows into the collector 200 along the wall of the inlet pipe 400 due to its own gravity. As the diameter of the inlet pipe 400 gradually decreases, the flow velocity of the wastewater gradually increases, facilitating the flow of wastewater into the collector 200 along the wall of the inlet pipe 400. Because the inner diameter of the inlet pipe 400 gradually decreases from top to bottom, the wastewater located on the wall of the inlet pipe 400 needs to overcome a large frictional force to flow upwards. Furthermore, under the action of its own gravity, the wastewater flows back into the collector 200 along the wall of the inlet pipe 400, reducing the possibility of wastewater flowing back from the inlet pipe 400 into the outlet pipe 110, thereby reducing the risk of wastewater flowing back into the fuel cell 100 when the ship tilts.

[0043] Referring to Figures 3 and 4, in some embodiments of this utility model, the inlet pipe 400 includes a constriction section 410 and an extension section 420 that are interconnected. The constriction section 410 is connected to the outlet pipe 110 and located below the outlet pipe 110. The inner diameter of the constriction section 410 gradually decreases from top to bottom. The extension section 420 extends into the water collector 200 and is located in the upper region of the water collector 200. Because the inner diameter of the constriction section 410 gradually decreases from top to bottom, the wastewater located in the constriction section 410 flows into the water collector 200 along the wall of the constriction section 410 under its own gravity, and the flow velocity of the wastewater gradually increases, which facilitates the wastewater flowing into the extension section 420 along the inner wall of the constriction section 410. Wastewater located in the contraction section 410, due to the gradual reduction in inner diameter from top to bottom, needs to overcome significant pipe wall friction to flow upwards. Furthermore, under its own gravity, the wastewater flows along the wall of the contraction section 410 into the extension section 420, and then into the collector 200. This reduces the possibility of wastewater flowing back into the discharge pipe 110, thereby reducing the risk of wastewater flowing back into the fuel cell 100 when the ship tilts. Since the extension section 420 extends into the collector 200, the possibility of wastewater flowing back into the extension section 420 along the inner wall of the collector 200 is reduced, further reducing the risk of wastewater flowing back into the fuel cell 100 and improving the reliability of a marine fuel cell drainage system.

[0044] Referring to Figures 2 and 3, in some embodiments of this utility model, a drainage system for a marine fuel cell further includes an exhaust pipe 120. One end of the exhaust pipe 120 is connected to an outlet pipe 110, and the other end is connected to the outside of the ship. The exhaust gas generated by the fuel cell 100 can enter the exhaust pipe 120 through the outlet pipe 110 and then be discharged to the outside of the ship. Since the inlet pipe is located below the outlet pipe 110, the exhaust gas of the fuel cell 100 can directly enter the exhaust pipe from the outlet pipe 110, reducing the impact of the inlet pipe 400 on the exhaust gas emission and reducing the air resistance effect within the outlet pipe 110 and the exhaust pipe 120.

[0045] Referring to Figure 5, in some embodiments of this utility model, wastewater in the water collector 200 enters the water tank 330 through the pumping pipe 320 for storage. The wastewater in the water tank 330 can be discharged to the outside of the ship through the drain pipe 340. The connection between the water tank 330 and the pumping pipe 320 is located above the connection between the water tank 330 and the drain pipe 340, which reduces the possibility of wastewater in the water tank 330 flowing back to the pumping pipe 320, thereby reducing the risk of wastewater in the water tank 330 flowing back to the water collector 200. At the same time, it is convenient for the wastewater in the water tank 330 to be discharged to the outside of the ship by its own gravity, reducing the risk that the wastewater at the bottom of the water tank 330 is difficult to discharge to the outside of the ship.

[0046] Referring to Figures 1, 2, and 3, in some embodiments of this utility model, a first check valve 500 is provided in the water tank 330. The first check valve 500 can prevent water in the water pumping pipe 320 from flowing back to the water collector 200, reducing the risk of wastewater in the water pumping pipe 320 flowing back to the water collector 200, reducing the risk of wastewater in the water tank 330 flowing back to the water collector 200 along the water pumping pipe 320 when the hull tilts, and thus reducing the risk of wastewater flowing back to the fuel cell 100, improving the safety and reliability of the drainage system of a marine fuel cell. A second check valve 600 is provided in the drain pipe 340. The second check valve 600 can prevent seawater outside the ship from flowing back to the water tank 330, thereby reducing the risk of seawater outside the ship flowing back to the drainage system of a marine fuel cell, and improving the safety of the drainage system of a marine fuel cell.

[0047] Referring to Figures 1 and 3, in some embodiments of this utility model, a water level sensor 700 is provided inside the water collector 200. The water level sensor 700 is used to detect the water level height inside the water collector 200, facilitating monitoring of the wastewater height inside the water collector 200. A drainage system for a marine fuel cell also includes a posture sensor and a controller 800. The posture sensor is used to monitor the tilt of the hull, and the controller 800 is used to drive the water pump 310 to pump water. The posture sensor is provided with a communication interface for data transmission, and the water level sensor 700 is provided with a communication interface for data transmission. The posture sensor and the water level sensor 700 are respectively connected to the controller 800 through the communication interfaces, enabling the posture sensor to transmit the monitored tilt data of the hull to the controller 800, and enabling the water level sensor 700 to transmit the monitored water level height inside the water collector 200 to the controller 800, thus realizing the communication connection between the posture sensor and the water level sensor 700 and the controller 800. The water level sensor 700 transmits the detected water level data to the controller 800. When the water level in the collector reaches a preset value, the controller 800 controls the water pump 310 to pump water from the collector 200 to the water tank 330, thus timely removing wastewater from the collector 200 and reducing the risk of wastewater flowing back into the fuel cell 100. The attitude sensor transmits the ship's tilt data to the controller 800. When the ship's tilt reaches a preset value, the controller 800 controls the water pump 310 to pump wastewater from the collector 200 to the water tank 330, further reducing the risk of wastewater flowing back into the fuel cell 100 when the ship tilts.

[0048] It is understood that sensors in the prior art are equipped with communication interfaces for transmitting data. The specific structures of the communication interfaces of the pose sensor and the water level sensor 700 will not be described in detail in this application.

[0049] It is understood that the controller can be a CNC board, a central control board, a PLC board, or other structures, and can be selected according to the actual application. This application does not limit it here.

[0050] It is understood that the number of water level sensors 700 can be set to two or more, with at least two water level sensors 700 spaced apart in the vertical direction within the water collector 200, thereby improving the accuracy of water level height detection within the water collector 200. The number of water level sensors 700 can be selected according to actual application, and this application does not limit it.

[0051] Referring to Figures 1 and 3, in some embodiments of this utility model, the water collector 200 is provided with a support 230, which is mounted on a ship and used to support the water collector 200 to improve its stability. One end of the support 230 is fixedly connected to the outer wall of the first chamber 210, and the other end abuts against the ship. Since the volume of the first chamber 210 is larger than the second volume, and the second chamber 220 is located above the first chamber 210, the stress distribution of the water collector 200 is optimized, further improving its stability.

[0052] In summary, this application proposes a drainage system for a marine fuel cell. Wastewater generated by the fuel cell 100 flows into a water collector 200 through a discharge pipe 110. A water pump 310 is installed inside the water collector 200, which draws the wastewater from the water collector 200 into a water tank 330 through a suction pipe 320. Since the water tank 330 is located above the waterline 900 outside the ship, the wastewater in the water tank 330 can be discharged outside the ship through a drain pipe 340 under its own gravity, improving the convenience of wastewater discharge from the fuel cell 100, reducing the risk of wastewater backflow due to the inability to discharge wastewater from the fuel cell 100, and allowing the wastewater in the water tank 330 to be recycled within the ship, thus improving resource utilization.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A drainage system for a marine fuel cell, used in a ship, characterized in that, include: A fuel cell having an exhaust pipe for discharging wastewater and exhaust gas; a water collector having the exhaust pipe connected to it; and a lifting and drainage assembly including a pump, a pumping pipe, a water tank, and a drain pipe, wherein the pump is located inside the water collector, the two ends of the pumping pipe are respectively connected to the pump and the water tank, so that the pump can draw wastewater from the water collector into the water tank for storage, one end of the drain pipe is connected to the water tank, and the other end is connected to the outside of the ship, and the water tank is arranged above the waterline outside the ship, so that the wastewater in the water tank can be discharged to the outside of the ship by its own gravity.

2. The drainage system for a marine fuel cell according to claim 1, characterized in that: The water collector has a first chamber and a second chamber, the first chamber being located above the second chamber, the volume of the second chamber being smaller than the volume of the first chamber, the water pump being located in the second chamber, and the discharge pipe being connected to the first chamber.

3. The drainage system for a marine fuel cell according to claim 2, characterized in that: The bottom of the first chamber is provided with a guide section, which is arranged at an angle to the waterline outside the ship and is connected to the second chamber.

4. The drainage system for a marine fuel cell according to claim 1, characterized in that: It also includes a water inlet pipe, the two ends of which are connected to the discharge pipe and the water collector, respectively, and the water inlet pipe is located below the discharge pipe.

5. The drainage system for a marine fuel cell according to claim 4, characterized in that: The inner diameter of the water inlet pipe gradually decreases from top to bottom.

6. The drainage system for a marine fuel cell according to claim 4, characterized in that: The inlet pipe includes a constriction section and an extension section that are interconnected. The constriction section is connected to the outlet pipe and is located below the outlet pipe. The inner diameter of the constriction section gradually decreases from top to bottom. The extension section extends into the water collector and is located in the upper region of the water collector.

7. A drainage system for a marine fuel cell according to claim 4, characterized in that: It also includes an exhaust pipe, one end of which is connected to the discharge pipe and the other end of which is connected to the outside of the ship.

8. The drainage system for a marine fuel cell according to claim 1, characterized in that: The connection between the water tank and the pumping pipe is located above the connection between the water tank and the drain pipe.

9. A drainage system for a marine fuel cell according to claim 1, characterized in that: The pumping pipe is equipped with a first check valve, which prevents water in the pumping pipe from flowing back into the water collector; the drain pipe is equipped with a second check valve, which prevents water outside the drain pipe from flowing back into the water tank.

10. A drainage system for a marine fuel cell according to claim 1, characterized in that: It also includes a controller for driving the water pump to pump water, a posture sensor for monitoring the ship's tilt, and a water level sensor for detecting the water level in the water collector. The posture sensor and the water level sensor are respectively connected to the controller through a communication interface.

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