Liquid hydrogen filling ship powered by hydrogen fuel

Abstract

The invention belongs to the technical field of marine liquid hydrogen filling, and discloses a hydrogen fuel powered liquid hydrogen filling ship which comprises a ship body and a deck, a liquid hydrogen storage pipe and a gaseous hydrogen storage pipe are arranged at the top of the deck, a first communicating pipe is installed on the surface of the liquid hydrogen storage pipe, and a liquid hydrogen pump is installed through the first communicating pipe; a transfer pipe is installed on one side of the liquid hydrogen pump, a second communicating pipe is installed at the top of the transfer pipe, a third communicating pipe is arranged in the second communicating pipe in a sealed and sleeved mode, and a filling cylinder is fixedly connected to one end of the third communicating pipe; a liquid inlet is formed in the side face of the filling cylinder. According to the device, the content of liquid hydrogen in the fan-shaped cavity is set to be quantitative, and the liquid hydrogen is discharged through the liquid discharging opening and the filling pipe through rotation, so that the accurate liquid hydrogen quantitative filling function is achieved, and the problem that in the prior art, due to compression fatigue possibly generated by a spring, the flow of a filling opening is inaccurate is completely solved.

Description

Technical Field

[0001] The invention belongs to the technical field of marine liquid hydrogen filling, and in particular relates to a hydrogen fuel-powered liquid hydrogen filling ship. Background Art

[0002] As an absolutely clean energy, hydrogen energy has always been the first choice of scientists to replace traditional fuels. However, it has not been implemented due to its high risk and high loss rate during storage and transportation. At present, in response to the slogan of protecting global warming, hydrogen energy technology has developed rapidly, and ships specially driven by hydrogen fuel have appeared. At the same time, liquid hydrogen refueling ships matching them have appeared. This ship integrates liquid hydrogen storage tanks, refueling systems, and gaseous hydrogen storage tanks, and can realize the function of refueling liquid hydrogen to ships at sea. Liquid hydrogen has the advantages of low storage pressure and high stability, which overwhelms the gaseous pressurized hydrogen storage solution. In the existing technology, when liquid hydrogen is refueled, its refueling end will inevitably appear. Leakage and inaccurate filling amount: Since liquid hydrogen requires a low temperature environment of -252.87℃, during the filling process, a small amount of liquid hydrogen will turn into hydrogen gas due to insufficient heat exchange between the filling port and the filled port. Hydrogen itself has strong permeability and can penetrate rubber sealing rings and certain metals, which means leakage is inevitable. However, the prior art only uses insulating materials to prevent liquid hydrogen from vaporizing, while ignoring the recovery of hydrogen. At the same time, since the filling port adopts a spring plus a one-way valve design, the spring may cause fatigue after long-term extrusion connection between the filling port and the filled port, resulting in a reduction in the opening of the filling port or the filled port, affecting the accuracy of quantitative filling of liquid hydrogen fuel. Summary of the invention

[0003] The object of the present invention is to provide a hydrogen fuel-powered liquid hydrogen refueling ship to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a hydrogen fuel-powered liquid hydrogen refueling ship, comprising a hull and a deck, wherein a liquid hydrogen storage pipe and a gaseous hydrogen storage pipe are arranged on the top of the deck, a connecting pipe 1 is installed on the surface of the liquid hydrogen storage pipe, and a liquid hydrogen pump is installed through the connecting pipe 1, a transfer pipe is installed on one side of the liquid hydrogen pump, a connecting pipe 2 is installed on the top of the transfer pipe, a connecting pipe 3 is provided in the internal sealing sleeve of the connecting pipe 2, and a filling cylinder is fixedly connected to one end of the connecting pipe 3; A liquid inlet is provided on the side of the filling cylinder and is connected to the connecting pipe. A liquid discharge port is provided at the bottom of the filling cylinder and a filling pipe is installed. A sealing plate is fixedly installed on the inner wall of the filling cylinder, and the sealing plate divides the inner cavity of the filling cylinder into a conveying area and a pressurizing area. A rotating shaft is rotatably installed inside the filling cylinder, and a conveyor located at the bottom of the sealing plate is fixedly installed on the bottom of the outer surface of the rotating shaft. A movable plate is sealed and clamped on the inner wall of the sealing plate. The movable plate is designed in a 90° fan shape and is sealed and clamped on the inner wall of the conveyor. A sealing sleeve on the outer surface of the rotating shaft is provided with a sealing ring located between the sealing plate and the movable plate. A fixed plate is fixedly installed on the inner wall of the filling cylinder, and a spring is elastically connected between the fixed plate and the movable plate.

[0005] As a preferred solution of the present invention, spiral piece 1 and spiral piece 2 are fixedly mounted on the outer surface of the rotating shaft, a recovery port is provided at the top of the filling cylinder, and two groups of slots are provided at the top of the inner wall of the filling cylinder. The two groups of slots are distributed at equal angles in the circumferential direction on the outer side surface of the recovery port, and the interior of the slot is elastically connected to spring 2, and is elastically connected to a wind plate through spring 2.

[0006] As a preferred solution of the present invention, the diameter of the wind plate is greater than the inner diameter of the recovery port, the wind plate abuts against the top of the inner wall of the filling cylinder, the spiral blade 2 and the spiral blade 1 are connected up and down and distributed on the top of the outer surface of the rotating shaft, and the pitch of the spiral blade 1 and the spiral blade 2 increases successively.

[0007] As a preferred solution of the present invention, the liquid hydrogen storage pipes are arranged in two groups, and the gaseous hydrogen storage pipes are installed in the deck laterally and equidistantly, a liquid hydrogen preparation device is installed between the gaseous hydrogen storage tank and the liquid hydrogen storage tank, and the connecting pipe three is hollow and can rotate around the axis of the connecting pipe two.

[0008] As a preferred solution of the present invention, the top-view cross-sectional shape of the conveyor is a cross with a hollow center. The conveyor cooperates with the inner cavity of the conveying area to form four sets of fan-shaped sealed cavities with equal volumes.

[0009] As a preferred solution of the present invention, the bottom of the conveyor is in sealing contact with the bottom of the conveying area, and the top of the conveyor is in sealing contact with the sealing plate.

[0010] As a preferred solution of the present invention, the thickness of the movable plate is greater than the thickness of the sealing plate, and the two right-angle ends at the bottom of the movable plate are both chamfered at 45°.

[0011] As a preferred solution of the present invention, the bottom of the inner cavity of the conveying area is assumed to be a plane rectangular coordinate system, the horizontal plate part and the vertical plate part of the conveyor are the X-axis and the Y-axis respectively, the center of the rotating axis is the origin O, and the positive directions of the X-axis and the Y-axis are rightward and upward respectively, the liquid discharge port is located in the fourth quadrant, and the liquid inlet is located in the third quadrant.

[0012] The beneficial effects of the present invention are as follows: 1. This device has been redesigned to achieve precise quantitative filling function, and is mainly used for filling of liquid hydrogen fuel for ships. Liquid hydrogen is input into the filling cylinder by providing a liquid hydrogen storage pipe, a liquid hydrogen pump and a filling cylinder, and the top part of the conveyor is sealed by a sealing plate. The movable plate is elastically pressed into the fan-shaped cavity formed between the conveyor and the conveying area by a fixed plate and a spring, and is located in the third quadrant of the conveying area. Only after the liquid hydrogen in the fan-shaped cavity is filled, the movable plate will be pushed upward and separated from the fan-shaped cavity, that is, the rotation limit of the conveyor is released. At this time, the liquid hydrogen content in the fan-shaped cavity is quantitative, and it is discharged through the discharge port and the filling pipe by rotation to achieve precise liquid hydrogen quantitative filling function, which completely overcomes the problem of inaccurate flow at the filling port caused by compression fatigue of the spring in traditional technology.

[0013] 2. The device uses a conveyor to form a seal with the conveying area and the sealing plate and the movable plate respectively, and an auxiliary seal is generated by the sealing ring. The rotating force generated by the conveyor being pushed by liquid hydrogen drives the rotating shaft, spiral piece 1 and spiral piece 2 to rotate, and generates an upward negative pressure. In this way, even if a small amount of liquid hydrogen vaporizes and leaks during the rotating transportation of the fan-shaped cavity, it will enter the pressurized area and be compressed and stored through the variable pitch design of spiral piece 1 and spiral piece 2, so that the hydrogen leakage generated during each liquid hydrogen filling can be recovered, effectively avoiding energy waste.

[0014] 3. The filling and stopping of liquid hydrogen in this device are fully automated. Except for the docking of the filling port, other parts are fully automatically operated. The rotating force generated by the conveyor driven by the liquid hydrogen is transmitted to the spiral piece 1 and the spiral piece 2. The spiral piece 1 and the spiral piece 2 pressurize and temporarily store the hydrogen entering the pressurization area through rotation. The wind plate is connected with the spring 2, so that the wind plate is sealed against the inner wall of the pressurization area under the upward elastic pulling force of the spring 2. At the same time, the wind plate is tightly pressed by the gradually increasing air pressure in the inner cavity of the pressurization area, which completely ensures the sealing of the recovery port and prevents hydrogen leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention; Figure 2 is a schematic diagram of the interior of the hull of the present invention; Figure 3 is a schematic diagram of a filling module of the present invention; Figure 4 It is a top view cutaway schematic diagram of the filling cylinder of the present invention; Figure 5 It is a front cutaway schematic diagram of the filling cylinder of the present invention; Figure 6 It is a side cutaway schematic diagram of the filling cylinder of the present invention; Figure 7 This is a three-dimensional internal view of the filling cylinder of the present invention; Figure 8 The present invention is a schematic diagram of the separation of the rotating shaft, the conveyor, the sealing plate, the fixed plate, the spring 1, the movable plate, the spiral sheet 1, the spiral sheet 2, the air plate, the spring 2, and the sealing ring.

[0016] In the figure: 1. hull; 2. deck; 3. liquid hydrogen storage pipe; 4. gaseous hydrogen storage pipe; 5. liquid hydrogen preparation device; 6. connecting pipe 1; 7. liquid hydrogen pump; 8. transfer pipe; 9. connecting pipe 2; 10. connecting pipe 3; 11. filling cylinder; 110. conveying area; 111. pressurizing area; 112. recovery port; 12. liquid inlet; 13. rotating shaft; 14. conveyor; 15. discharge port; 16. filling pipe; 17. sealing plate; 18. fixed plate; 19. spring 1; 20. movable plate; 21. spiral piece 1; 22. spiral piece 2; 23. wind plate; 24. slot; 25. spring 2; 26. sealing ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figures 1 to 8 As shown, the embodiment of the present invention provides a hydrogen fuel-powered liquid hydrogen filling ship, including a hull 1 and a deck 2. A liquid hydrogen storage pipe 3 and a gaseous hydrogen storage pipe 4 are arranged on the top of the deck 2. A connecting pipe 1 6 is installed on the surface of the liquid hydrogen storage pipe 3, and a liquid hydrogen pump 7 is installed through the connecting pipe 1 6. A transfer pipe 8 is installed on one side of the liquid hydrogen pump 7. A connecting pipe 2 9 is installed on the top of the transfer pipe 8. A connecting pipe 3 10 is provided in the internal sealing sleeve of the connecting pipe 2 9, and a filling cylinder 11 is fixedly connected to one end of the connecting pipe 3 10; A liquid inlet 12 is provided on the side of the filling cylinder 11 and is connected to the connecting pipe 3 10. A liquid discharge port 15 is provided at the bottom of the filling cylinder 11 and a filling pipe 16 is installed. A sealing plate 17 is fixedly installed on the inner wall of the filling cylinder 11. The sealing plate 17 divides the inner cavity of the filling cylinder 11 into a conveying area 110 and a pressurizing area 111. A rotating shaft 13 is rotatably mounted inside the filling cylinder 11, a conveyor 14 located at the bottom of a sealing plate 17 is fixedly mounted on the bottom of the outer surface of the rotating shaft 13, a movable plate 20 is sealed and clamped on the inner wall of the sealing plate 17, the movable plate 20 is designed in a 90° fan shape, and is sealed and clamped on the inner wall of the conveyor 14, a sealing sleeve on the outer surface of the rotating shaft 13 is provided with a sealing ring 26 located between the sealing plate 17 and the movable plate 20, a fixed plate 18 is fixedly mounted on the inner wall of the filling cylinder 11, and a spring 19 is elastically connected between the fixed plate 18 and the movable plate 20; The device has been redesigned to achieve a precise quantitative filling function, and is mainly used for filling liquid hydrogen fuel for ships. Liquid hydrogen is input into the filling cylinder 11 by providing a liquid hydrogen storage pipe 3, a liquid hydrogen pump 7 and a filling cylinder 11, and a sealing plate 17 is used to form a seal on the top part of the conveyor 14. The movable plate 20 is elastically pressed into the fan-shaped cavity formed between the conveyor 14 and the conveying area 110 by using a fixed plate 18 and a spring 19, and is located in the third quadrant of the conveying area 110. Only after the liquid hydrogen in the fan-shaped cavity is filled, the movable plate 20 is pushed upward and separated from the fan-shaped cavity, that is, the rotation limit of the conveyor 14 is released. At this time, the liquid hydrogen content in the fan-shaped cavity is quantitative, and it is discharged through the discharge port 15 and the filling pipe 16 by rotation, so as to achieve a precise liquid hydrogen quantitative filling function, which completely overcomes the problem of inaccurate flow at the filling port caused by compression fatigue of the spring in the traditional technology.

[0019] The outer surface of the rotating shaft 13 is also fixedly mounted with a spiral piece 1 21 and a spiral piece 22. The top of the filling cylinder 11 is provided with a recovery port 112. The top of the inner wall of the filling cylinder 11 is provided with two groups of card slots 24. The two groups of card slots 24 are circumferentially distributed at equal angles on the outer side of the recovery port 112. The inside of the card slot 24 is elastically connected with a spring 25, and the wind plate 23 is elastically connected through the spring 25. The device utilizes the conveyor 14 to form a seal with the conveying area 110 and the sealing plate 17 and the movable plate 20 respectively, and an auxiliary seal is generated by the sealing ring 26. The rotating force generated by the conveyor 14 pushed by the liquid hydrogen drives the rotating shaft 13, the spiral piece 1 21 and the spiral piece 22 to rotate, and generates an upward negative pressure. In this way, even if a small amount of vaporization and leakage occurs when the liquid hydrogen is transported through the fan-shaped cavity, it will enter the pressurized area 111 and be compressed and stored through the variable pitch design of the spiral piece 1 21 and the spiral piece 22, so that the hydrogen leakage generated each time the liquid hydrogen is added can be recovered, effectively avoiding energy waste.

[0020] The diameter of the air plate 23 is greater than the inner diameter of the recovery port 112, the air plate 23 abuts against the top of the inner wall of the filling cylinder 11, the spiral piece 22 and the spiral piece 1 21 are connected up and down and distributed on the top of the outer surface of the rotating shaft 13, and the pitch of the spiral piece 1 21 and the spiral piece 2 22 are in a trend of increasing successively; The filling and stopping of liquid hydrogen filling of the device are fully automated. Except for the docking of the filling port, other parts are fully automatically operated. The conveyor 14 is provided with a rotational force generated by the liquid hydrogen conveyance and is transmitted to the spiral piece 1 21 and the spiral piece 2 22. The spiral piece 1 21 and the spiral piece 22 pressurize and temporarily store the hydrogen entering the pressurizing area 111 through rotation. The wind plate 23 is connected by the spring 25, so that the wind plate 23 is sealed against the inner wall of the pressurizing area 111 under the upward elastic pulling force of the spring 25. At the same time, the wind plate 23 is tightly pressed by the gradually increasing air pressure in the inner cavity of the pressurizing area 111, which completely ensures the sealing of the recovery port 112 to prevent hydrogen leakage.

[0021] Among them, the liquid hydrogen storage pipe 3 is set in two groups, and the gaseous hydrogen storage pipe 4 is installed in the deck 2 at equal intervals in the horizontal direction. A liquid hydrogen preparation device 5 is installed between the gaseous hydrogen storage tank 4 and the liquid hydrogen storage tank 3. The connecting pipe 3 10 is hollow and can rotate around the axis of the connecting pipe 2 9; The liquid hydrogen storage tube 3 is provided in two groups, which is used to store more liquid hydrogen. The liquid hydrogen storage tube 3 is made of insulating material, so as to ensure the storage condition of liquid hydrogen at minus 252.87°C. The gaseous hydrogen storage tube 4 is responsible for recovering the hydrogen leaked due to the vaporization of liquid hydrogen during filling. The device also integrates the hydrogen-liquid hydrogen conversion module, which improves the practicability of the device.

[0022] The cross-sectional shape of the conveyor 14 in top view is a cross with a hollow center. The conveyor 14 cooperates with the inner cavity of the conveying area 110 to form four sets of fan-shaped sealed cavities with equal volumes. like Figure 4 As shown, the conveyor 14 and the conveying area 110 form four groups of fan-shaped cavities, and when the fan-shaped cavity is located in the third quadrant, it is limited by the movable plate 20 so that it cannot rotate and is filled with liquid hydrogen. When it rotates to the fourth quadrant, it can be discharged through the drain port 15 and liquid hydrogen can be filled.

[0023] The bottom of the conveyor 14 is in sealing contact with the bottom of the conveying area 110 , and the top of the conveyor 14 is in sealing contact with the sealing plate 17 ; The top and bottom of the conveyor 14 need to be sealed so that the liquid hydrogen does not leak on a large scale when it is driven by the fan-shaped cavity.

[0024] The thickness of the movable plate 20 is greater than the thickness of the sealing plate 17, and the two right-angle ends at the bottom of the movable plate 20 are both chamfered at 45°. When the movable plate 20 is pushed upward by the pressure of liquid hydrogen, its bottom will still form a seal for the fan-shaped cavity in the conveyor 14 by abutting against the conveyor 14. The chamfer design of its bottom effectively creates a buffering effect between the conveyor 14 and the movable plate 20.

[0025] The bottom of the inner cavity of the conveying area 110 is assumed to be a plane rectangular coordinate system, the horizontal plate portion and the vertical plate portion of the conveyor 14 are the X-axis and the Y-axis respectively, the center of the rotating shaft 13 is the origin O, and the positive directions of the X-axis and the Y-axis are rightward and upward respectively, the liquid discharge port 15 is located in the fourth quadrant, and the liquid inlet 12 is located in the third quadrant; like Figure 8 As shown, for description purposes, the inner cavity of the delivery area 110 is designed to be a circular plane rectangular coordinate system. When the fan-shaped cavity is located in the first and second quadrants, its interior is empty and in a standby state. When entering the third quadrant, liquid hydrogen can be added, and liquid hydrogen can be discharged after entering the fourth quadrant.

[0026] Working principle: When the device is working, the hull 1 is used as the main carrier and floats on the sea surface, and is responsible for filling the passing ships with liquid hydrogen fuel. Among them, the two liquid hydrogen storage pipes 3 are responsible for storing liquid hydrogen, and the gaseous hydrogen storage pipe 4 is responsible for recovering the hydrogen leaked due to vaporization during the filling; When filling liquid hydrogen, start the liquid hydrogen pump 7, and pump the liquid hydrogen in the liquid hydrogen storage pipe 3 outward, and make it pass through the connecting pipe 1 6, the liquid hydrogen pump 7, the transfer pipe 8, the connecting pipe 2 9, the connecting pipe 3 10 and the filling cylinder 11 in sequence, and input to the filled ship through the filling pipe 16: rotate the connecting pipe 3 10, and drive the filling cylinder 11 to rotate to the filling port of the filled ship, as shown in FIG. Figure 4 As shown, the liquid hydrogen in the connecting pipe 3 10 enters the inner cavity of the conveying area 110 along the positive direction of the X-axis and enters the third quadrant. The movable plate 20 provides a top seal. The movable plate 20 blocks the conveyor 14 so that it cannot rotate. At this time, the liquid hydrogen in the third quadrant is continuously filled; Then, in the third quadrant, the liquid hydrogen is gradually filled up, and the movable plate 20 is pushed upward, compressing the fixed plate 18 until the movable plate 20 no longer hinders the rotation of the conveyor 14. At this time, the conveyor 14 is driven by the liquid hydrogen to rotate counterclockwise around the axis of the rotating shaft 13, and the fan-shaped cavity formed between the conveyor 14 and the inner cavity of the conveying area 110 absorbs the first group of liquid hydrogen input. At this time, the movable plate 20 moves upward and abuts against the top of the conveyor 14. The next group of fan-shaped cavities is connected with the liquid inlet 12 during rotation and loaded with the second group of liquid hydrogen. Before the first group of fan-shaped cavities is connected with the liquid discharge port 15, it will first be isolated and sealed from the liquid inlet 12, and then the first group of liquid hydrogen is discharged along the liquid discharge port 15 and the filling pipe 16; Then, after the conveyor 14 rotates 90°, the movable plate 20 is re-engaged in the next group of fan-shaped cavities and limits the rotation of the conveyor 14. When the shaft 13 is driven to rotate, the hydrogen that leaks into the pressurized area 111 due to vaporization during liquid hydrogen filling gathers here, and the shaft 13 drives the spiral piece 1 21 and the spiral piece 2 22 to spirally drive the hydrogen upward and compress it for storage. As the air pressure in the inner cavity of the pressurized area 111 increases, the wind plate 23 is more and more closely in contact with the pressurized area 111 to ensure the sealing. After each filling is completed, the staff can recycle the hydrogen in the pressurized area 111 into the gaseous hydrogen storage pipe 4. The hydrogen in the gaseous hydrogen storage pipe 4 is re-cooled into liquid hydrogen through the liquid nitrogen cooling component in the liquid hydrogen preparation device 5, and circulated into the liquid hydrogen storage pipe 3.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen fuel-powered liquid hydrogen refueling ship, comprising a hull (1) and a deck (2), wherein a liquid hydrogen storage pipe (3) and a gaseous hydrogen storage pipe (4) are arranged on the top of the deck (2), a connecting pipe (6) is installed on the surface of the liquid hydrogen storage pipe (3), and a liquid hydrogen pump (7) is installed through the connecting pipe (6), a transfer pipe (8) is installed on one side of the liquid hydrogen pump (7), and a connecting pipe (9) is installed on the top of the transfer pipe (8), Features: The inner sealing sleeve of the connecting pipe 2 (9) is provided with a connecting pipe 3 (10), and one end of the connecting pipe 3 (10) is fixedly connected to a filling cylinder (11); The side of the filling cylinder (11) is provided with a liquid inlet (12) which is in communication with the connecting pipe 3 (10); the bottom of the filling cylinder (11) is provided with a liquid discharge port (15) and is provided with a filling pipe (16); a sealing plate (17) is fixedly installed on the inner wall of the filling cylinder (11); the sealing plate (17) divides the inner cavity of the filling cylinder (11) into a conveying area (110) and a pressurizing area (111); A rotating shaft (13) is rotatably mounted inside the filling cylinder (11); a conveyor (14) located at the bottom of a sealing plate (17) is fixedly mounted on the bottom of the outer surface of the rotating shaft (13); a movable plate (20) is sealingly clamped on the inner wall of the sealing plate (17); the movable plate (20) is designed in a 90° fan shape and is sealingly clamped on the inner wall of the conveyor (14); a sealing sleeve on the outer surface of the rotating shaft (13) is provided with a sealing ring (26) located between the sealing plate (17) and the movable plate (20); a fixed plate (18) is fixedly mounted on the inner wall of the filling cylinder (11); a spring (19) is elastically connected between the fixed plate (18) and the movable plate (20).

2. A hydrogen fuel-powered liquid hydrogen refueling ship according to claim 1, Features: The outer surface of the rotating shaft (13) is also fixedly mounted with a spiral piece 1 (21) and a spiral piece 2 (22); the top of the filling cylinder (11) is provided with a recovery port (112); the top of the inner wall of the filling cylinder (11) is provided with two groups of slots (24); the two groups of slots (24) are circumferentially distributed at equal angles on the outer side surface of the recovery port (112); the inside of the slots (24) is elastically connected to a spring 2 (25), and is elastically connected to a wind plate (23) via the spring 2 (25).

3. A hydrogen fuel-powered liquid hydrogen refueling ship according to claim 2, Features: The diameter of the wind plate (23) is greater than the inner diameter of the recovery port (112), the wind plate (23) abuts against the top of the inner wall of the filling cylinder (11), the spiral plate 2 (22) and the spiral plate 1 (21) are connected up and down and distributed on the top of the outer surface of the rotating shaft (13), and the pitch of the spiral plate 1 (21) and the spiral plate 2 (22) are in a trend of increasing in sequence.

4. A hydrogen fuel-powered liquid hydrogen refueling ship according to claim 3, Features: The liquid hydrogen storage pipes (3) are arranged in two groups, and the gaseous hydrogen storage pipes (4) are installed in the deck (2) at equal intervals in the transverse direction. A liquid hydrogen preparation device (5) is installed between the gaseous hydrogen storage tank (4) and the liquid hydrogen storage tank (3). The connecting pipe three (10) is hollow and can rotate around the axis of the connecting pipe two (9).

5. A hydrogen fuel-powered liquid hydrogen refueling ship according to claim 4, Features: The cross-sectional shape of the conveyor (14) in top view is a cross with a hollow center; the conveyor (14) cooperates with the inner cavity of the conveying area (110) to form four groups of fan-shaped sealed cavities with equal volumes.

6. A hydrogen fuel-powered liquid hydrogen refueling ship according to claim 5, Features: The bottom of the conveyor (14) is in sealing contact with the bottom of the conveying area (110), and the top of the conveyor (14) is in sealing contact with the sealing plate (17).

7. A hydrogen fuel-powered liquid hydrogen refueling ship according to claim 6, Features: The thickness of the movable plate (20) is greater than the thickness of the sealing plate (17), and the two right-angle ends at the bottom of the movable plate (20) are both chamfered at 45°.

8. A hydrogen fuel-powered liquid hydrogen refueling ship according to claim 7, Features: Assume that the bottom of the inner cavity of the conveying area (110) is a plane rectangular coordinate system, the horizontal plate portion and the vertical plate portion of the conveyor (14) are the X-axis and the Y-axis respectively, the center of the rotating shaft (13) is the origin O, and the positive directions of the X-axis and the Y-axis are rightward and upward respectively, the liquid discharge port (15) is located in the fourth quadrant, and the liquid inlet (12) is located in the third quadrant.

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