A quick break liquid hydrogen transfer liquid hydrogen valve

Abstract

The application belongs to the field of liquid hydrogen valves, and particularly relates to a liquid hydrogen valve based on quick on-off liquid hydrogen transfer, which aims at the problems that the existing liquid hydrogen valve cannot quickly on-off, is not easy to maintain and clean up after icing, and cannot condition the valve opening size. The application provides the following scheme, which comprises a power device for quick on-off of the liquid hydrogen valve and two symmetrically arranged valve bodies, both of which are located at the bottom of the power device, the inside of the valve body is provided with a sealing plate for sealing of the valve body, the bottom of the power device is detachably connected with a transmission structure, the bottom of the transmission structure penetrates into the inside of the valve body, and the bottom of the transmission structure is used in cooperation with the top of the sealing plate. In the application, the power device, the valve body, the sealing plate, the transmission structure, the limiting structure and the first bolt are arranged, so that the problems that the existing liquid hydrogen valve cannot quickly on-off, is not easy to maintain and clean up after icing, and cannot condition the valve opening size are solved.

Description

Technical Field

[0001] This invention relates to the field of liquid hydrogen valve technology, and in particular to a liquid hydrogen transfer valve based on rapid on / off switching of liquid hydrogen. Background Technology

[0002] A liquid hydrogen transfer valve is a valve used to control the flow of liquid hydrogen during transfer. Liquid hydrogen, as a high-pressure, low-temperature hazardous substance, requires effective control and regulation during storage and transportation. The liquid hydrogen transfer valve plays a crucial role and typically possesses the following functions: Flow control: The liquid hydrogen transfer valve can control the flow rate of liquid hydrogen by adjusting the valve opening to meet specific application requirements; Pressure regulation: The liquid hydrogen transfer valve can adjust the pressure of liquid hydrogen as needed to ensure transfer within a safe range; Leakage protection: The liquid hydrogen transfer valve needs to have good sealing performance to prevent liquid hydrogen leakage and ensure operational safety; Temperature adaptability: Due to the low-temperature characteristics of liquid hydrogen, the liquid hydrogen transfer valve needs to use special materials and designs to ensure normal operation in low-temperature environments. Liquid hydrogen transfer valves are usually manufactured using high-strength alloy materials and undergo rigorous testing and certification to ensure their pressure resistance, sealing, and reliability. During liquid hydrogen transfer, the liquid hydrogen transfer valve needs to be selected according to specific operating conditions and used and maintained strictly in accordance with operating procedures and safety requirements.

[0003] The following problems may occur during the use of liquid hydrogen transfer valves: liquid hydrogen is prone to freezing in low temperature environments, which may cause the valve to malfunction. It is necessary to regularly check and clean the inside of the valve to ensure that there is no ice blockage.

[0004] Liquid hydrogen transfer valves need to be able to accurately control and regulate the pressure of liquid hydrogen, requiring adjustments to the valve opening or regulator parameters to achieve the desired pressure range.

[0005] Meanwhile, during the liquid hydrogen transfer process, the liquid hydrogen transfer valve needs to quickly close and open the pipeline. However, the existing liquid hydrogen transfer valve can only open slowly, which can easily lead to liquid hydrogen leakage, thus causing dangerous problems during the use of the liquid hydrogen valve. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing liquid hydrogen transfer valves, such as the inability to quickly switch on and off, difficulty in maintenance and cleaning due to icing, and the inability to determine the valve opening size. Therefore, this invention proposes a liquid hydrogen transfer valve based on rapid on / off switching.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A liquid hydrogen transfer valve based on rapid on / off switching includes a power unit for rapid on / off switching of the liquid hydrogen valve and two symmetrically arranged valve bodies, both of which are located at the bottom of the power unit, and a sealing plate for sealing the valve body is provided inside the valve body.

[0009] The bottom of the power unit is detachably connected to a transmission structure, the bottom of which extends into the interior of the valve body, and the bottom of the transmission structure is used in conjunction with the top of the sealing plate.

[0010] The bottom of the sealing plate is provided with a limiting structure for limiting the position of the sealing plate;

[0011] The valve body is provided with a first bolt inside, and two valve bodies are detachably connected by the first bolt. There are several first bolts, which are evenly distributed inside the valve body.

[0012] Preferably, the transmission structure includes a support member fixedly connected to the bottom of the power device. A connecting pipe is provided at the bottom of the support member, extending through the interior of the valve body. One side of the connecting pipe is fixedly welded to the interior of one side of the valve body, and the other side of the connecting pipe is detachably connected to the interior of the other side of the valve body. A fixing column is detachably connected to the output end of the power device. The bottom of the fixing column extends through the interior of the connecting pipe. A first hexagonal block is fixedly connected to the bottom of the fixing column, extending through the interior of a sealing plate. A locking and limiting structure is fitted onto the surface of the fixing column. Four second bolts are provided inside the support member and the connecting pipe, evenly distributed within them. The support member and the connecting pipe are detachably connected via the second bolts.

[0013] Preferably, the limiting structure includes a first threaded sleeve, one side of the surface of the first threaded sleeve is fixedly welded to the interior of one side of the valve body, and the other side of the surface of the first threaded sleeve is detachably connected to the interior of the other side of the valve body. A stud is threadedly connected to the interior of the first threaded sleeve, the top of the stud extends through the interior of the sealing plate, and a second hexagonal block for rotating the stud is fixedly connected to the bottom of the stud. A positioning groove for inserting the stud is provided at the bottom of the sealing plate.

[0014] Preferably, the locking and limiting structure includes a limiting ring for fixing the column, a locking plate is movably connected inside the limiting ring, a screw is movably connected to the right side of the locking plate, a second threaded sleeve is threadedly connected to the surface of the screw, the left side of the second threaded sleeve is fixedly connected to the surface of the limiting ring, and the right side of the second threaded sleeve penetrates the connecting pipe and extends to the right side of the connecting pipe.

[0015] Preferably, a first bearing for limiting the rotation of the fixed column is sleeved on the top of the surface of the fixed column, and the surface of the first bearing is detachably connected to the interior of the support member.

[0016] Preferably, a second bearing is fixedly connected to the left side of the screw surface, and the left side of the second bearing is fixedly connected to the right side of the locking plate.

[0017] Preferably, the top of the sealing plate has a slot for the first hexagonal block to be inserted, and the inside of the connecting pipe has a limiting opening for the second threaded sleeve to move.

[0018] Preferably, a turntable for rotating the screw is fixedly connected to the right side of the screw, and an auxiliary rod for assisting the turntable is fixedly connected to the surface of the turntable. There are four auxiliary rods, which are evenly distributed, and the end of the auxiliary rod away from the turntable is spherical.

[0019] Beneficial effects

[0020] 1. In this invention, by setting up a power unit, valve body, sealing plate, transmission structure, limiting structure and first bolt, the power unit can output power to the transmission structure, the transmission structure drives the sealing plate to rotate, so that the sealing plate can seal and open the valve body, the limiting structure can limit the sealing plate, and the first bolt can facilitate the disassembly of the valve body, thus solving the problems in the prior art where liquid hydrogen transfer liquid hydrogen valves cannot be quickly switched on and off, are difficult to inspect and clean due to icing, and cannot determine the size of the valve opening.

[0021] 2. In this invention, by setting a transmission structure, the fixed column can be driven to rotate by the power device, the fixed column drives the first hexagonal block to rotate, and the first hexagonal block drives the sealing plate to rotate. Since the connecting pipe is fixedly connected to one of the valve bodies, the top of the connecting pipe is fixed to the support member by the second bolt. Since the support member is fixedly connected to the power device, the support member and the power device can be fixed to the top of the connecting pipe by the second bolt. The locking and limiting structure can limit the rotation angle of the fixed column.

[0022] 3. In this invention, by setting a limiting structure, the first threaded sleeve can be fixedly connected to one of the valve bodies. The first threaded sleeve is provided with a stud. By rotating the second hexagonal block, the second hexagonal block drives the stud to rotate. Through the cooperation between the stud and the first threaded sleeve, the stud can be inserted into or removed from the positioning groove of the sealing plate, thereby achieving the purpose of installing and disassembling the sealing plate.

[0023] 4. In this invention, by setting a locking and limiting structure, a limiting ring can be sleeved on the surface of the fixed column, and a second threaded sleeve can be fixed on the surface of the limiting ring. By rotating the screw, the screw and the second threaded sleeve are threaded together, causing the screw to drive the locking plate to be locked onto or disengaged from the surface of the fixed column, thus achieving the problem of fixing the limiting ring and the second threaded sleeve to the surface of the fixed column. The angle of rotation of the second threaded sleeve inside the connecting pipe can be used to control the size of the opening of the sealing plate.

[0024] 5. In this invention, by setting a first bearing, the fixed column can be limited and supported, reducing the shaking of the fixed column, and at the same time, it plays an auxiliary role in the rotation of the fixed column, preventing the fixed column from moving up and down.

[0025] 6. In this invention, by setting a second bearing, the screw can easily drive the locking plate to move left and right through the second bearing, so that the locking plate can be fixed or detached from the surface of the fixing column, thereby facilitating the transmission of the structure.

[0026] 7. In this invention, by setting a slot and a limiting opening, the first hexagonal block can be easily inserted into the interior of the sealing plate, so as to facilitate the rotation of the sealing plate by the first hexagonal block. The limiting opening can limit the rotation angle of the second threaded sleeve. At the same time, by fixing the limiting ring and the second threaded sleeve at different positions of the fixing post, the opening size of the sealing plate can be limited.

[0027] 8. In this invention, by setting a turntable and an auxiliary rod, the rotation of the screw can be facilitated, the auxiliary rod can facilitate the rotation of the turntable, and the spherical auxiliary rod can play a role in preventing detachment. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of a liquid hydrogen transfer valve based on rapid on / off switching proposed in this invention.

[0029] Figure 2 This is a three-dimensional cross-sectional view of a liquid hydrogen transfer valve based on rapid on / off switching proposed in this invention.

[0030] Figure 3 This is a three-dimensional cross-sectional view of the support component and connecting pipe of a liquid hydrogen transfer valve based on rapid on / off switching proposed in this invention.

[0031] Figure 4 This is a schematic diagram of the locking plate and screw structure of a liquid hydrogen transfer valve based on rapid on / off switching proposed in this invention.

[0032] Figure 5 This invention proposes a liquid hydrogen transfer valve based on rapid on / off switching. Figure 2 Enlarged structural diagram of section A;

[0033] Figure 6 This invention proposes a liquid hydrogen transfer valve based on rapid on / off switching. Figure 2 Enlarged structural diagram of section B;

[0034] Figure 7 This invention proposes a liquid hydrogen transfer valve based on rapid on / off switching. Figure 3 Enlarged structural diagram of section C.

[0035] In the diagram: 1. Power unit; 2. Valve body; 3. Sealing plate; 4. First bolt; 5. Support component; 6. Connecting pipe; 7. Fixing column; 8. First hexagonal block; 9. Second bolt; 10. First threaded sleeve; 11. Stud; 12. Second hexagonal block; 13. Positioning groove; 14. Limiting ring; 15. Locking plate; 16. Screw; 17. Second threaded sleeve; 18. First bearing; 19. Second bearing; 20. Slot; 21. Limiting opening; 22. Turntable; 23. Auxiliary rod. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] Example 1

[0038] Reference Figure 1-7 A liquid hydrogen transfer valve based on rapid on / off switching includes a power unit 1 for rapid on / off switching of the liquid hydrogen valve and two symmetrically arranged valve bodies 2. Both valve bodies 2 are located at the bottom of the power unit 1, and a sealing plate 3 for sealing the valve body 2 is provided inside the valve body 2.

[0039] The bottom of the power unit 1 is detachably connected to a transmission structure, the bottom of which extends into the interior of the valve body 2, and the bottom of the transmission structure is used in conjunction with the top of the sealing plate 3.

[0040] The bottom of the sealing plate 3 is provided with a limiting structure for limiting the sealing plate 3;

[0041] The valve body 2 is provided with a first bolt 4 inside. The two valve bodies 2 are detachably connected by the first bolt 4. There are several first bolts 4, which are evenly distributed inside the valve body 2.

[0042] Example 2

[0043] Improvements based on Embodiment 1: Includes a power unit 1 for rapid on / off switching of a liquid hydrogen valve and two symmetrically arranged valve bodies 2, both valve bodies 2 located at the bottom of the power unit 1. A sealing plate 3 for sealing the valve body 2 is provided inside each valve body 2. A transmission structure is detachably connected to the bottom of the power unit 1, with its bottom extending into the interior of the valve body 2. The bottom of the transmission structure cooperates with the top of the sealing plate 3. The transmission structure includes a support member 5 fixedly connected to the bottom of the power unit 1. A connecting pipe 6 is provided at the bottom of the support member 5, extending into the interior of the valve body 2. One side of the surface of the connecting pipe 6 is fixedly welded to the interior of one valve body 2, and the other side of the surface of the connecting pipe 6 is detachably connected to the interior of the other valve body 2. The output end is detachably connected to a fixing post 7. The bottom of the fixing post 7 extends into the interior of the connecting pipe 6. A first hexagonal block 8 is fixedly connected to the bottom of the fixing post 7. The bottom of the first hexagonal block 8 extends into the interior of the sealing plate 3. A locking and limiting structure is fitted on the surface of the fixing post 7. Four second bolts 9 are provided inside the support member 5 and the connecting pipe 6, and are evenly distributed inside the support member 5 and the connecting pipe 6. The support member 5 and the connecting pipe 6 are detachably connected by the second bolts 9. The fixing post 7 can be rotated by the power device 1. The fixing post 7 drives the first hexagonal block 8 to rotate, and the first hexagonal block 8 drives the sealing plate 3 to rotate. Since the connecting pipe 6 is fixedly connected to one of the valve bodies 2, the top of the connecting pipe 6 is connected by the second bolts 9. Bolt 9 secures the support member 5. Since the support member 5 is fixedly connected to the power unit 1, the support member 5 and the power unit 1 can be fixed to the top of the connecting pipe 6 by the second bolt 9. The locking and limiting structure can limit the rotation angle of the fixed column 7. The locking and limiting structure includes a limiting ring 14 for limiting the fixed column 7. A locking plate 15 is movably connected inside the limiting ring 14. A screw 16 is movably connected to the right side of the locking plate 15. A second threaded sleeve 17 is threadedly connected to the surface of the screw 16. The left side of the second threaded sleeve 17 is fixedly connected to the surface of the limiting ring 14. The right side of the second threaded sleeve 17 penetrates the connecting pipe 6 and extends to the right side of the connecting pipe 6. It can be sleeved on the surface of the fixed column 7 by the limiting ring 14 and fixed to the limiting ring 14 by the second threaded sleeve 17. On the surface, by rotating the screw 16, the screw 16 engages with the threaded engagement of the second screw sleeve 17, causing the screw 16 to drive the locking plate 15 to engage or disengage from the surface of the fixing post 7. This achieves the goal of fixing the limiting ring 14 and the second screw sleeve 17 to the surface of the fixing post 7. The angle of rotation of the second screw sleeve 17 inside the connecting pipe 6 controls the opening size of the sealing plate 3. A first bearing 18 is fitted on the top of the surface of the fixing post 7 for limiting the rotation of the fixing post 7. The surface of the first bearing 18 is detachably connected to the interior of the support member 5, which can provide limiting support for the fixing post 7, reduce the shaking of the fixing post 7, and assist the rotation of the fixing post 7 to prevent the fixing post 7 from moving up and down. A second bearing 19 is fixedly connected to the left side of the surface of the screw 16.The left side of the second bearing 19 is fixedly connected to the right side of the locking plate 15, which allows the screw 16 to drive the locking plate 15 to move left and right through the second bearing 19, so that the locking plate 15 can be fixed or detached from the surface of the fixing post 7, thereby facilitating structural transmission. The top of the sealing plate 3 is provided with a slot 20 for the first hexagonal block 8 to be inserted, and the inside of the connecting pipe 6 is provided with a limiting opening 21 for the second screw sleeve 17 to be limited in movement, which allows the first hexagonal block 8 to be inserted into the interior of the sealing plate 3, thereby facilitating the rotation of the sealing plate 3 by the first hexagonal block 8. The limiting opening 21 can... The limiting ring 14 can limit the rotation angle of the second threaded sleeve 17. Simultaneously, by fixing the limiting ring 14 and the second threaded sleeve 17 to different positions on the fixing post 7, the opening size of the sealing plate 3 is limited. A turntable 22 for rotating the screw 16 is fixedly connected to the right side of the screw 16. Four auxiliary rods 23 are fixedly connected to the surface of the turntable 22 to assist its rotation. These auxiliary rods 23 are evenly distributed, and the end of each auxiliary rod 23 furthest from the turntable 22 is spherical, facilitating the rotation of the screw 16 and the turntable 22. The auxiliary rod 23 serves to prevent detachment. The bottom of the sealing plate 3 is equipped with a limiting structure for positioning the sealing plate 3. This limiting structure includes a first threaded sleeve 10. One side of the surface of the first threaded sleeve 10 is fixedly welded to the interior of one side of the valve body 2, while the other side of the surface of the first threaded sleeve 10 is detachably connected to the interior of the other side of the valve body 2. A stud 11 is threadedly connected to the interior of the first threaded sleeve 10. The top of the stud 11 extends into the interior of the sealing plate 3, and a second hexagonal block 12 for rotating the stud 11 is fixedly connected to the bottom of the stud 11. The bottom of the sealing plate 3 has an opening for inserting the stud 11. The positioning groove 13 can be fixedly connected to one of the valve bodies 2 via the first threaded sleeve 10. A stud 11 is installed inside the first threaded sleeve 10. By rotating the second hexagonal block 12, the second hexagonal block 12 drives the stud 11 to rotate. Through the cooperation between the stud 11 and the first threaded sleeve 10, the stud 11 can be engaged or disengaged from the positioning groove 13 of the sealing plate 3, achieving the purpose of installing and disassembling the sealing plate 3. A first bolt 4 is installed inside the valve body 2, and two valve bodies 2 are detachably connected by the first bolt 4. There are several first bolts 4, evenly distributed inside the valve bodies 2.

[0044] However, as is well known to those skilled in the art, the working principle and wiring method of the power unit 1 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0045] In this invention, when a liquid hydrogen transfer valve is needed, it is first installed on the delivery pipeline. When the liquid hydrogen transfer valve needs to be opened or closed, the power unit 1 is turned on, which drives the fixed column 7 to rotate. When the fixed column 7 rotates, the first bearing 18 provides limiting support for the fixed column 7, reducing its sway and assisting in its rotation. The fixed column 7 drives the first hexagonal block 8 to rotate, which in turn drives the sealing plate 3 to rotate. Since the connecting pipe 6 is fixedly connected to one of the valve bodies 2, the top of the connecting pipe 6 is fixed to the support member 5 by the second bolt 9. Because the support member 5 is fixedly connected to the power unit 1, the support member 5 and the power unit 1 can be fixed to the top of the connecting pipe 6 by the second bolt 9. The first threaded sleeve 10 is fixedly connected to one of the valve bodies 2, and a stud 11 is provided inside the first threaded sleeve 10. By rotating the second hexagonal block 12, the second hexagonal block 12 drives the stud 11 to rotate. The column 11 rotates, and through the cooperation of the stud 11 and the first threaded sleeve 10, the stud 11 is inserted into the interior of the sealing plate 3, causing the sealing plate 3 to rotate around the stud 11. The limiting ring 14 is sleeved on the surface of the fixed column 7, and the second threaded sleeve 17 is fixed on the surface of the limiting ring 14. By rotating the auxiliary rod 23, the auxiliary rod 23 drives the turntable 22 to rotate, and the turntable 22 drives the screw 16 to rotate. Through the threaded cooperation between the screw 16 and the second threaded sleeve 17, the screw 16 drives the locking plate 15 to be engaged with or disengaged from the surface of the fixed column 7 through the second bearing 19, thus fixing the limiting ring 14 and the second threaded sleeve 17 to the surface of the fixed column 7. The angle of rotation of the second threaded sleeve 17 inside the connecting pipe 6 controls the opening size of the sealing plate 3. The limiting opening 21 can limit the rotation angle of the second threaded sleeve 17. At the same time, by fixing the limiting ring 14 and the second threaded sleeve 17 at different positions on the fixed column 7, the opening size of the sealing plate 3 is limited.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A liquid hydrogen transfer valve based on rapid on / off switching, comprising a power unit (1) for rapid on / off switching of the liquid hydrogen valve and two symmetrically arranged valve bodies (2), characterized in that, Both valve bodies (2) are located at the bottom of the power unit (1), and a sealing plate (3) for sealing the valve body (2) is provided inside the valve body (2). The bottom of the power unit (1) is detachably connected to a transmission structure, the bottom of which extends through the interior of the valve body (2), and the bottom of which is used in conjunction with the top of the sealing plate (3). The bottom of the sealing plate (3) is provided with a limiting structure for limiting the sealing plate (3); The valve body (2) is provided with a first bolt (4) inside. The two valve bodies (2) are detachably connected by the first bolt (4). The number of the first bolt (4) is several and they are evenly distributed inside the valve body (2). The transmission structure includes a support member (5) fixedly connected to the bottom of the power device (1). A connecting pipe (6) is provided at the bottom of the support member (5). The bottom of the connecting pipe (6) extends into the interior of the valve body (2). One side of the surface of the connecting pipe (6) is fixedly welded to the interior of one side of the valve body (2). The other side of the surface of the connecting pipe (6) is detachably connected to the interior of the other side of the valve body (2). A fixed column (7) is detachably connected to the output end of the power device (1). The bottom of the fixed column (7) extends into the interior of the connecting pipe (6). A first hexagonal block (8) is fixedly connected to the bottom of the fixed column (7). The bottom of the first hexagonal block (8) extends into the interior of the sealing plate (3). A locking and limiting structure is sleeved on the surface of the fixed column (7). The locking and limiting structure includes a limiting ring (14) for limiting the fixed column (7). A locking plate (15) is movably connected inside the limiting ring (14). A screw (16) is movably connected to the right side of the locking plate (15). A second screw sleeve (17) is threadedly connected to the surface of the screw (16). The left side of the second screw sleeve (17) is fixedly connected to the surface of the limiting ring (14). The right side of the second screw sleeve (17) passes through the connecting pipe (6) and extends to the right side of the connecting pipe (6). A limiting opening (21) for limiting the movement of the second screw sleeve (17) is opened inside the connecting pipe (6). The limiting opening (21) can limit the rotation angle of the second threaded sleeve (17), and at the same time, by fixing the limiting ring (14) and the second threaded sleeve (17) at different positions on the fixing post (7), the purpose of limiting the opening size of the sealing plate (3) can be achieved.

2. The liquid hydrogen transfer valve based on rapid on / off switching of liquid hydrogen according to claim 1, characterized in that, The support member (5) and the connecting pipe (6) are provided with a second bolt (9). There are four second bolts (9) and they are evenly distributed inside the support member (5) and the connecting pipe (6). The support member (5) and the connecting pipe (6) are detachably connected by the second bolts (9).

3. A liquid hydrogen transfer valve based on rapid on / off switching of liquid hydrogen according to claim 1, characterized in that, The limiting structure includes a first threaded sleeve (10), one side of the surface of the first threaded sleeve (10) is fixedly welded to the interior of one side of the valve body (2), and the other side of the surface of the first threaded sleeve (10) is detachably connected to the interior of the other side of the valve body (2). The interior of the first threaded sleeve (10) is threaded with a stud (11), the top of the stud (11) extends through the interior of the sealing plate (3), and the bottom of the stud (11) is fixedly connected with a second hexagonal block (12) for rotating the stud (11). The bottom of the sealing plate (3) is provided with a positioning groove (13) for inserting the stud (11).

4. A liquid hydrogen transfer valve based on rapid on / off switching of liquid hydrogen according to claim 2, characterized in that, The top of the surface of the fixed column (7) is fitted with a first bearing (18) for limiting the rotation of the fixed column (7), and the surface of the first bearing (18) is detachably connected to the interior of the support member (5).

5. A liquid hydrogen transfer valve based on rapid on / off switching of liquid hydrogen according to claim 1, characterized in that, A second bearing (19) is fixedly connected to the left side of the screw (16) surface, and the left side of the second bearing (19) is fixedly connected to the right side of the locking plate (15).

6. A liquid hydrogen transfer valve based on rapid on / off switching of liquid hydrogen according to claim 2, characterized in that, The top of the sealing plate (3) is provided with a slot (20) for the first hexagonal block (8) to be inserted.

7. A liquid hydrogen transfer valve based on rapid on / off switching of liquid hydrogen according to claim 1, characterized in that, A turntable (22) for rotating the screw (16) is fixedly connected to the right side of the screw (16). An auxiliary rod (23) for assisting the turntable (22) is fixedly connected to the surface of the turntable (22). There are four auxiliary rods (23) and they are evenly distributed. The end of the auxiliary rod (23) away from the turntable (22) is spherical.

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