Liquid hydrogen feeding ball valve

Abstract

The utility model relates to the technical field of ball valves, and discloses a liquid hydrogen feeding ball valve which comprises a ball valve body, the left side and the right side of the top end of the ball valve body are fixedly connected with connecting and guiding pipes, the inner wall of the ball valve body is rotationally connected with a ball valve element, and a flow dividing sleeve is installed on the inner wall of the ball valve element. A vertical plate is fixedly connected to the position, located on the right side of the flow dividing sleeve, of the inner wall of the ball valve element, the vertical plate and the flow dividing sleeve are connected through an elastic assembly, a transmission rod is rotationally connected to the inner wall of the top end of the ball valve body and penetrates through the inner side and the outer side, and the bottom end of the transmission rod is fixedly connected to the top end of the ball valve element. The top end of the ball valve body is fixedly connected with a side arc plate on the front side of the transmission rod, and the top end of the ball valve body is fixedly connected with a movable bin on the rear side of the transmission rod. According to the utility model, the problem that when the ball valve main body needs to be closed, the ball valve core cannot be quickly closed due to the flowing impact potential of liquid hydrogen is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a liquid hydrogen feeding ball valve. Background Art

[0002] Liquid hydrogen is the liquid form of hydrogen at extremely low temperatures. It plays an important role in many high-tech applications, especially in aerospace, energy and scientific research. However, the production and storage costs of liquid hydrogen are relatively high, which limits its widespread application in some fields.

[0003] The types of valves used in the liquid hydrogen storage and supply pipelines in existing liquid hydrogen storage and supply systems mainly include: check valves, stop valves, regulating valves and emergency shut-off valves. However, when the flow rate of liquid hydrogen delivery is too large, the impact is too great, and it will be difficult to close the valve when it needs to be closed.

[0004] In this regard, in order to solve the problem that when the flow rate of liquid hydrogen delivery is too large, the impact is too great, and the valve is difficult to close when it needs to be closed, the present application proposes a liquid hydrogen feeding ball valve. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a liquid hydrogen feeding ball valve to avoid the situation where the ball valve core cannot be quickly closed due to the momentum of the liquid hydrogen flow when the ball valve body needs to be closed.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A liquid hydrogen feeding ball valve comprises a ball valve body, wherein the left and right sides of the top of the ball valve body are fixedly connected to connecting pipes, the inner wall of the ball valve body is rotatably connected to a ball valve core, the inner wall of the ball valve core is installed with a diverter sleeve, the inner wall of the ball valve core is located on the right side of the diverter sleeve and is fixedly connected to a vertical plate, the vertical plate and the diverter sleeve are connected by an elastic component, the inner wall of the top of the ball valve body is rotatably connected to a transmission rod and passes through the inner and outer sides, the bottom end of the transmission rod is fixedly connected to the top of the ball valve core, the top of the ball valve body is located in front of the transmission rod and is fixedly connected to a side arc plate, the top of the ball valve body is located behind the transmission rod and is fixedly connected to a movable warehouse, and a transmission component is installed between the inner wall of the movable warehouse and the transmission rod for adjusting the rotation of the ball valve core.

[0008] Furthermore, the elastic component includes a sliding rod fixedly connected to the left end of the vertical plate and a baffle slidingly connected to the inner wall of the diversion sleeve, the middle part of the inner wall of the baffle is slidingly connected to the outer wall of the sliding rod, the right end of the baffle is located on the outside of the sliding rod and is fixedly connected to a spring, and the other end of the spring is fixedly connected to the left end of the vertical plate.

[0009] Furthermore, a plurality of diffusion grooves are provided on the outer wall of the diverter sleeve for liquid hydrogen to flow through the diverter sleeve to the other side of the ball valve body.

[0010] Furthermore, the transmission assembly includes an electric push rod fixedly connected to the right end of the inner wall of the movable warehouse and a gear fixedly connected to the outer wall of the transmission rod. The driving end of the electric push rod is fixedly connected to a linkage frame, and the right side of the front end of the linkage frame is fixedly connected to a rack. The upper and lower ends of the rack are slidably connected to the upper inner wall of the front end of the movable warehouse, and one side of the front end of the rack is meshed with the outer diameter of the gear.

[0011] Furthermore, a slot block is fixedly connected to the front side and the right side of the top end of the side arc plate, which is used to engage and calibrate the rotation of the transmission rod.

[0012] Furthermore, a calibration plate is rotatably connected to the middle portion of the top end of the transmission rod, and the shape of one side of the outer wall of the calibration plate matches the shape of the inner wall of the slot block.

[0013] Furthermore, a mounting ring is fixedly connected to the opposite side of the outer wall of the connecting pipe for installation with the connecting pipe.

[0014] The utility model has the following beneficial effects:

[0015] In the present invention, when too much liquid hydrogen accumulates on one side of the diverter sleeve, it will push the baffle to squeeze the spring, thereby achieving a buffering effect. When the baffle moves to the range of the diffuser groove, the liquid hydrogen will flow to the other side of the ball valve body through multiple diffuser grooves. The above-mentioned method enables the liquid hydrogen to flow slowly when passing through the interior of the ball valve body, thereby reducing the momentum of a large amount of liquid hydrogen when flowing, and avoiding the situation where the ball valve core cannot be quickly closed due to the momentum of the liquid hydrogen flow when the ball valve body needs to be closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front perspective view of a liquid hydrogen feeding ball valve proposed in the utility model;

[0017] Figure 2 This is a rear-end perspective view of a liquid hydrogen feeding ball valve proposed in the present invention;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a cross-sectional view of the ball valve body of a liquid hydrogen feeding ball valve proposed in the present invention;

[0020] Figure 5 This is a cross-sectional view of a diverter sleeve of a liquid hydrogen feeding ball valve proposed in the utility model;

[0021] Figure 6 This is a cross-sectional view of the movable chamber of a liquid hydrogen feeding ball valve proposed in the utility model.

[0022] Legend:

[0023] 1. Ball valve body; 2. Connecting pipe; 3. Mounting ring; 4. Side arc plate; 5. Movable chamber; 6. Transmission rod; 7. Calibration plate; 8. Slot block; 9. Ball valve core; 10. Diverter sleeve; 11. Vertical plate; 12. Gear; 13. Rack; 14. Slide rod; 15. Baffle; 16. Diffuser trough; 17. Spring; 18. Electric push rod; 19. Linkage frame. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1 、 Figure 4 as well as Figure 5 The utility model provides an embodiment: a liquid hydrogen feeding ball valve, including a ball valve body 1, the left and right sides of the top of the ball valve body 1 are fixedly connected to the connecting pipe 2, the inner wall of the ball valve body 1 is rotatably connected to the ball valve core 9, the inner wall of the ball valve core 9 is installed with a diverter sleeve 10, the inner wall of the ball valve core 9 is fixedly connected to a vertical plate 11 on the right side of the diverter sleeve 10, the left end of the vertical plate 11 is fixedly connected to a sliding rod 14 and a baffle 15 slidably connected to the inner wall of the diverter sleeve 10, the middle of the inner wall of the baffle 15 is slidably connected to the outer wall of the sliding rod 14, and the right end of the baffle 15 A spring 17 is fixedly connected to the outside of the slide rod 14, and the other end of the spring 17 is fixedly connected to the left end of the vertical plate 11. A plurality of bulk flow grooves 16 are provided on the outer wall of the diverter sleeve 10 for liquid hydrogen to flow through the diverter sleeve 10 to the other side of the ball valve body 1. The inner wall of the top end of the ball valve body 1 is rotatably connected to the transmission rod 6 and passes through the inside and outside sides. The bottom end of the transmission rod 6 is fixedly connected to the top of the ball valve core 9. The top end of the ball valve body 1 is located in front of the transmission rod 6 and is fixedly connected to the side arc plate 4. The top end of the ball valve body 1 is located behind the transmission rod 6 and is fixedly connected to the movable warehouse 5.

[0026] Specifically, during the transportation process, liquid hydrogen will first pass through the ball valve core 9 and accumulate on one side of the diverter sleeve 10. When too much liquid hydrogen accumulates, it will push the baffle 15 to squeeze the spring 17, which has a buffering effect. When the baffle 15 moves to the range of the bulk flow groove 16, the liquid hydrogen will flow to the other side of the ball valve body 1 through multiple bulk flow grooves 16. When the liquid hydrogen accumulated on one side of the diverter sleeve 10 is less, the baffle 15 cannot be pushed to slide in the diverter sleeve 10. It is necessary to wait until a certain amount of liquid nitrogen accumulates before the baffle 15 can be pushed and passed through the bulk flow groove 16, so that the liquid hydrogen can flow slowly when passing through the inside of the ball valve body 1, thereby reducing the momentum of a large amount of liquid hydrogen when flowing, and avoiding the situation where the ball valve core 9 cannot be quickly closed due to the momentum of the liquid hydrogen flow when the ball valve body 1 needs to be closed.

[0027] Reference Figure 2 、 Figure 3 as well as Figure 6 , an electric push rod 18 is fixedly connected to the right end of the inner wall of the movable warehouse 5, and a gear 12 is fixedly connected to the outer wall of the transmission rod 6. The driving end of the electric push rod 18 is fixedly connected to a linkage frame 19. The right side of the front end of the linkage frame 19 is fixedly connected to a rack 13. The upper and lower ends of the rack 13 are slidingly connected to the inner wall of the upper side of the front end of the movable warehouse 5. One side of the front end of the rack 13 is meshed with the outer diameter of the gear 12. The front side of the top of the side arc plate 4 and the right side of the top are fixedly connected with a slot block 8 for engaging and calibrating the rotation of the transmission rod 6. The middle part of the top of the transmission rod 6 is rotatably connected to the calibration plate 7. The shape of one side of the outer wall of the calibration plate 7 matches the shape of the inner wall of the slot block 8. The opposite side of the outer wall of the connecting pipe 2 is fixedly connected with a mounting ring 3 for docking the pipeline for installation.

[0028] Specifically, a controller is installed at the rear end of the movable warehouse 5 and is electrically connected to the electric push rod 18. PLC technology is used to control the electric push rod 18. When the electric push rod 18 is started, the linkage frame 19 is pushed and the rack 13 moves together. The gear 12 meshing with one side of it will drive the transmission rod 6 to rotate, and then drive the ball valve core 9 to rotate, closing the two sides of the ball valve body 1, causing the originally through ball valve body 1 to be closed. In the process of closing the ball valve body 1, the transmission rod 6 will rotate synchronously with the calibration plate 7, and the calibration plate 7 stuck in the right slot block 8 will move away from there, and the other side of the calibration plate 7 will rotate to the front slot block 8 and be stuck, so as to achieve simple adjustment and calibration. The ball valve body 1 is installed between the pipelines through the connecting pipes 2 and the mounting rings 3 on both sides of the ball valve body 1. The pipeline is docked with the connecting pipe 2, and the mounting ring 3 is docked with the ring on the pipeline. Then, bolts are inserted into the corresponding through-holes of the mounting ring 3 and the ring, and then the nuts are tightened on one side of the bolts.

[0029] Working principle: First, by starting the electric push rod 18, the linkage frame 19 is pushed and the rack 13 moves together. The gear 12 meshing with one side thereof will drive the transmission rod 6 to rotate, and then drive the ball valve core 9 to rotate, closing the two sides of the ball valve body 1, prompting the originally through ball valve body 1 to be closed. In the process of closing the ball valve body 1, the transmission rod 6 will rotate synchronously with the calibration plate 7, and the calibration plate 7 stuck in the right side slot block 8 will move away from that place, and the other side of the calibration plate 7 will rotate to the front side slot block 8 and get stuck, so as to achieve simple adjustment and calibration. The ball valve body 1 is installed between the pipelines through the connecting pipes 2 and the mounting ring 3 on both sides of the ball valve body 1. During the transportation process, the liquid hydrogen will first pass through the ball valve core 9 and accumulate in the distribution On one side of the flow sleeve 10, when too much liquid hydrogen accumulates, it will push the baffle 15 to squeeze the spring 17, which has a buffering effect. When the baffle 15 moves to the range of the diffuser groove 16, the liquid hydrogen will flow to the other side of the ball valve body 1 through multiple diffuser grooves 16. When the liquid hydrogen accumulated on one side of the diverter sleeve 10 is less, the baffle 15 cannot be pushed to slide in the diverter sleeve 10. It is necessary to wait until a certain amount of liquid nitrogen accumulates before the baffle 15 can be pushed and passed through the diffuser groove 16. The above method can make the liquid hydrogen flow slowly when passing through the inside of the ball valve body 1, thereby reducing the momentum of a large amount of liquid hydrogen when flowing, and avoiding the situation where the ball valve core 9 cannot be quickly closed due to the momentum of the liquid hydrogen flow when the ball valve body 1 needs to be closed.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A liquid hydrogen feeding ball valve, characterized in that: The invention comprises a ball valve body (1), wherein the left and right sides of the top of the ball valve body (1) are fixedly connected to the connecting pipe (2), the inner wall of the ball valve body (1) is rotatably connected to the ball valve core (9), the inner wall of the ball valve core (9) is installed with a diversion sleeve (10), the inner wall of the ball valve core (9) is located on the right side of the diversion sleeve (10) and is fixedly connected to a vertical plate (11), the vertical plate (11) and the diversion sleeve (10) are connected through an elastic component, the inner wall of the top of the ball valve body (1) is rotatably connected to the transmission rod (6) and passes through the inner and outer sides, the bottom end of the transmission rod (6) is fixedly connected to the top of the ball valve core (9), the top of the ball valve body (1) is located in front of the transmission rod (6) and is fixedly connected to the side arc plate (4), the top of the ball valve body (1) is located behind the transmission rod (6) and is fixedly connected to the movable bin (5), and a transmission component is installed between the inner wall of the movable bin (5) and the transmission rod (6) for adjusting the rotation of the ball valve core (9).

2. A liquid hydrogen feeding ball valve according to claim 1, characterized in that: The elastic component comprises a slide rod (14) fixedly connected to the left end of the vertical plate (11) and a baffle (15) slidably connected to the inner wall of the diversion sleeve (10), the middle part of the inner wall of the baffle (15) is slidably connected to the outer wall of the slide rod (14), the right end of the baffle (15) is located outside the slide rod (14) and is fixedly connected to a spring (17), and the other end of the spring (17) is fixedly connected to the left end of the vertical plate (11).

3. A liquid hydrogen feeding ball valve according to claim 1, characterized in that: The outer wall of the diverter sleeve (10) is provided with a plurality of diffusion grooves (16) for allowing liquid hydrogen to pass through the diverter sleeve (10) and flow to the other side of the ball valve body (1).

4. A liquid hydrogen feeding ball valve according to claim 1, characterized in that: The transmission assembly comprises an electric push rod (18) fixedly connected to the right end of the inner wall of the movable bin (5) and a gear (12) fixedly connected to the outer wall of the transmission rod (6), the driving end of the electric push rod (18) is fixedly connected to a linkage frame (19), the right side of the front end of the linkage frame (19) is fixedly connected to a rack (13), the upper and lower ends of the rack (13) are slidably connected to the inner wall of the upper side of the front end of the movable bin (5), and one side of the front end of the rack (13) is meshedly connected to the outer diameter of the gear (12).

5. The liquid hydrogen feeding ball valve according to claim 1, characterized in that: A slot block (8) is fixedly connected to the front side and the right side of the top end of the side arc plate (4) and is used to engage and calibrate the rotation of the transmission rod (6).

6. The liquid hydrogen feeding ball valve according to claim 1, characterized in that: The middle portion of the top end of the transmission rod (6) is rotatably connected to a calibration plate (7), and the shape of one side of the outer wall of the calibration plate (7) matches the shape of the inner wall of the slot block (8).

7. The liquid hydrogen feeding ball valve according to claim 1, characterized in that: A mounting ring (3) is fixedly connected to the opposite side of the outer wall of the connecting pipe (2) for mounting the connecting pipe.

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