Cold insulation pool structure for liquid hydrogen pump

Abstract

The invention belongs to the technical field of liquid hydrogen filling equipment, and particularly relates to a cold insulation pool structure for a liquid hydrogen pump, the cold insulation pool structure comprises a pool body, the side wall of the pool body is fixedly connected with a liquid outlet pipe; a plurality of fixing blocks are fixedly connected to the end part of the tank body; the middle part of the fixed block is rotationally connected with a clamping block; the clamping block and the fixing block are connected through a torsional spring. A top cover is arranged at the top of the tank body; the top of the top cover is fixedly connected with a liquid inlet pipe; a plurality of insertion blocks are fixedly connected to the bottom of the liquid inlet pipe; the inserting block is in sliding fit with the fixing block; an inserting groove is formed in the middle of the inserting block; the slot is in sliding fit with the clamping block; the top cover and the pool body can be rapidly fixed through rotation by using the cooperation of the clamping blocks and the insertion blocks when the top cover and the pool body are connected, so that the top cover is fixed through clamping of the clamping blocks during fixing, the fixing time of the top cover is shortened, the top cover can be detached more rapidly, the limitation of the top cover can be contacted by shifting the clamping blocks, and the top cover can be conveniently detached. Therefore, convenience is increased during maintenance.

Description

Technical Field

[0001] This invention relates to the field of liquid hydrogen refueling equipment technology, specifically a cold storage tank structure for a liquid hydrogen pump. Background Technology

[0002] A liquid hydrogen pump is a specialized cryogenic fluid transport device that can operate stably in an ultra-low temperature environment of -253℃ to transport liquid hydrogen from storage containers (such as cold storage pools) to downstream systems (such as engines and hydrogen refueling machines).

[0003] When the liquid hydrogen pump is working, a cold insulation pool is used to maintain a low temperature environment to prevent liquid hydrogen from evaporating and ensure efficient pump delivery. The cold insulation pool uses multiple layers of insulation to block external heat and combines low temperature medium backfilling to maintain a low temperature of about -253°C to reduce liquid hydrogen volatilization.

[0004] The existing cold storage pool consists of a pool body and a top cover, but the connection is made by rotating and tightening multiple bolts. This increases the working time required for disassembling and installing the top cover during subsequent maintenance, leading to increased inconvenience in maintenance.

[0005] Therefore, a cold storage tank structure for liquid hydrogen pumps is proposed to address the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A liquid hydrogen pump cold storage tank structure, comprising a tank body, with a liquid outlet pipe fixedly connected to the side wall of the tank body; multiple fixing blocks fixedly connected to the end of the tank body; a locking block rotatably connected to the middle of each fixing block; the locking block and the fixing block connected by a torsion spring; a top cover provided on the top of the tank body; a liquid inlet pipe fixedly connected to the top of the top cover; multiple insert blocks fixedly connected to the bottom of the liquid inlet pipe; the insert blocks and the fixing blocks are in sliding fit; a slot is provided in the middle of each insert block; the slot and the locking block are in sliding fit. By using the locking block and the insert block in cooperation, the top cover can be quickly fixed by rotation when connecting it to the tank body. Thus, the top cover is fixed by the locking block during fixing, thereby speeding up the fixing time of the top cover. Disassembly is also faster, as the restriction on the top cover can be released by moving the locking block, thus increasing convenience during maintenance.

[0008] Preferably, a sliding rod is slidably connected to the top of the top cover; a placement plate is fixedly connected to the top of the sliding rod; by adding the sliding rod, pressure can be applied above the liquid hydrogen pump, so that the liquid hydrogen pump is in close contact with the pool body after placement, thereby increasing the stability of the liquid hydrogen pump after placement.

[0009] Preferably, a fixing plate is fixedly connected to the bottom of the top cover; a fixing groove is provided on the top of the pool body; the fixing plate and the fixing groove are correspondingly arranged and slidably fitted; by adding the fixing plate and the fixing groove, the contact area can be increased when the pool body and the top cover are connected. At the same time, after the connection is fixed, the gap of the connection will be blocked by the fixing plate, thereby reducing the airflow entering the mixing.

[0010] Preferably, the top of the pool body is provided with a placement groove; an oil-absorbing sponge is fixedly connected to the middle of the placement groove; the oil-absorbing sponge and the slide rod are connected through and slidably connected; by adding the oil-absorbing sponge, oil can be applied to the slide rod, thereby reducing the contact friction between the slide rod and the top cover when the slide rod slides, thereby reducing the resistance to movement.

[0011] Preferably, the locking blocks are hinged with linkage rods; multiple linkage rods are provided on the locking blocks; by adding linkage rods, multiple locking blocks can be operated simultaneously when the top cover is removed, thereby increasing convenience.

[0012] Preferably, the slide bar surface is provided with flexible balls; multiple flexible balls are arranged on the slide bar; by increasing the number of flexible balls, the compression of the liquid hydrogen pump when the slide bar moves down can be transferred through the flexibility of the flexible balls, thereby reducing the rigid contact between the slide bar and the liquid hydrogen pump.

[0013] The advantages of this invention are:

[0014] 1. The liquid hydrogen pump cold storage tank structure of the present invention can be quickly fixed by rotation when connecting the top cover and the tank body by using a combination of a locking block and a plug. Thus, the top cover is fixed by the locking block during fixing, thereby speeding up the fixing time of the top cover. Disassembly is also faster, as the restriction on the top cover can be released by moving the locking block, thereby increasing convenience during maintenance.

[0015] 2. The liquid hydrogen pump cold storage tank structure of the present invention can apply pressure to the top of the liquid hydrogen pump by adding a sliding rod, so that the liquid hydrogen pump is in close contact with the tank body after placement, thereby increasing the stability of the liquid hydrogen pump after placement. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main body of the present invention;

[0018] Figure 2This is a schematic diagram of the structure of the placement groove in this invention;

[0019] Figure 3 This is a schematic diagram of the liquid outlet pipe in this invention;

[0020] Figure 4 This is a schematic diagram of the structure of the fixing block in this invention;

[0021] Figure 5 This is a schematic diagram of the slide bar in this invention.

[0022] In the diagram: 1. Pool body; 11. Outlet pipe; 12. Fixing block; 13. Locking block; 14. Top cover; 15. Inlet pipe; 16. Insert block; 17. Slot; 2. Sliding rod; 21. Placement plate; 3. Fixing plate; 31. Fixing groove; 4. Placement groove; 41. Oil-absorbing sponge; 5. Linkage rod; 6. Flexible ball. Detailed Implementation

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

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 5As shown in the embodiment of the present invention, a cold storage tank structure for a liquid hydrogen pump includes a tank body 1. A liquid outlet pipe 11 is fixedly connected to the side wall of the tank body 1. Multiple fixing blocks 12 are fixedly connected to the end of the tank body 1. A locking block 13 is rotatably connected to the middle of each fixing block 12. The locking block 13 and the fixing block 12 are connected by a torsion spring. A top cover 14 is provided on the top of the tank body 1. A liquid inlet pipe 15 is fixedly connected to the top of the top cover 14. Multiple insert blocks 16 are fixedly connected to the bottom of the liquid inlet pipe 15. The insert blocks 16 and the fixing blocks 14 are connected by a torsion spring. 2. Sliding fit; a slot 17 is provided in the middle of the insert 16; the slot 17 and the locking block 13 are sliding fit; during operation, the liquid hydrogen is first pumped into the tank body 1, and then the inlet and outlet of the liquid hydrogen pump are connected to the outlet pipe 11 and the inlet pipe 15 through flexible hoses. After connection, the top cover 14 is placed on top of the tank body 1. After placement, the top cover 14 is rotated clockwise. During the rotation of the top cover 14, multiple insert blocks 16 will move, and during the movement, the insert blocks 16 will gradually insert into the fixed position. Inside block 12, when inserted into the fixed block 12, the end of the insert block 16 will first push the fixed block 12. After being pushed, the locking block 13 will tilt and then leave the moving path of the insert block 16. When the insert block 16 is fully inserted into the fixed block 12, the locking block 13 will correspond to the slot 17. At this time, the locking block 13 will return to its original position due to the force of the torsion spring and enter the slot 17. After entering, the locking block 13 will fix the slot 17, thereby connecting and fixing the top cover 14 and the pool body 1. When removing the top cover 14... First, move the locking block 13 so that it rotates out of the slot 17, and then rotate the top cover 14 in the opposite direction. By using the locking block 13 and the insert block 16 together, the top cover 14 and the pool body 1 can be quickly fixed by rotation when connected. Thus, the top cover 14 is fixed by the locking of the locking block 13, thereby speeding up the fixing time of the top cover 14. It can also be faster to disassemble. The restriction on the top cover 14 can be released by moving the locking block 13, thereby increasing the convenience during maintenance.

[0026] like Figures 1 to 5 As shown, a sliding rod 2 is slidably connected to the top of the top cover 14; a placement plate 21 is fixedly connected to the top of the sliding rod 2; during operation, after the pool body 1 and the top cover 14 are combined, the placement plate 21 will contact the liquid hydrogen pump. At this time, the bottom of the sliding rod 2 will contact the top of the liquid hydrogen pump. Then, a counterweight can be placed on the top of the placement plate 21, thereby pressing down the sliding rod 2 through the weight combination, so that the sliding rod 2 applies pressure to the liquid hydrogen pump from above; by adding the sliding rod 2, pressure can be applied to the top of the liquid hydrogen pump, so that the liquid hydrogen pump is in close contact with the pool body 1 after placement, increasing the stability of the liquid hydrogen pump after placement.

[0027] like Figures 2 to 3As shown, a fixing plate 3 is fixedly connected to the bottom of the top cover 14; a fixing groove 31 is provided on the top of the pool body 1; the fixing plate 3 and the fixing groove 31 are correspondingly arranged and slidably fitted; during operation, when the pool body 1 and the top cover 14 are combined, the fixing plate 3 will first be inserted into the fixing groove 31. After the pool body 1 and the top cover 14 are connected and fixed, the fixing plate 3 and the fixing groove 31 will be tightly attached, thereby increasing the seal at the connection between the pool body 1 and the top cover 14; by adding the fixing plate 3 and the fixing groove 31, the contact area can be increased when the pool body 1 and the top cover 14 are connected. At the same time, after the connection is fixed, the gap of the connection will be blocked by the fixing plate 3, thereby reducing the airflow entering the mixing.

[0028] like Figures 2 to 5 As shown, a placement groove 4 is provided on the top of the pool body 1; an oil-absorbing sponge 41 is fixedly connected to the middle of the placement groove 4; the oil-absorbing sponge 41 and the sliding rod 2 are connected through and slidably connected; during operation, when the sliding rod 2 slides on the top cover 14, some oil can be poured into the placement groove 4, and then the placement groove 4 will absorb the oil into itself. When the sliding rod 2 slides, the sliding rod 2 will contact the placement groove 4, and at this time the oil inside the placement groove 4 will be absorbed by the sliding rod 2, thus coating the surface of the sliding rod 2 with oil; by adding the oil-absorbing sponge 41, the sliding rod 2 can be coated with oil, thereby reducing the contact friction between the sliding rod 2 and the top cover 14 when the sliding rod 2 slides, thereby reducing the movement resistance.

[0029] like Figures 1 to 3 As shown, the locking blocks 13 are hinged with linkage rods 5; multiple linkage rods 5 are provided on the locking blocks 13; during operation, when disassembling the top cover 14, moving one locking block 13 will drive the connected linkage rod 5 to move, and when the linkage rod 5 moves, it will drive the other locking blocks 13 to move together, thus achieving linkage; by adding linkage rods 5, multiple locking blocks 13 can be operated at the same time when disassembling the top cover 14, thereby increasing convenience.

[0030] like Figure 5 As shown, flexible balls 6 are formed on the surface of the slide rod 2; multiple flexible balls 6 are arranged on the slide rod 2; during operation, when the bottom of the slide rod 2 contacts the liquid hydrogen pump, the flexible balls 6 will first contact the liquid hydrogen pump, and then deform under pressure. When deformed, the downward movement space of the slide rod 2 is increased, thereby eliminating the hard contact force; by adding flexible balls 6, the compression force on the liquid hydrogen pump when the slide rod 2 moves downward can be transferred through the flexibility of the flexible balls 6, thereby reducing the hard contact between the slide rod 2 and the liquid hydrogen pump.

[0031] Working principle: First, pump liquid hydrogen into the tank 1. Then, connect the inlet and outlet of the liquid hydrogen pump to the outlet pipe 11 and inlet pipe 15 via flexible hoses. After connection, place the top cover 14 on top of the tank 1. Rotate the top cover 14 clockwise. This rotation will move multiple insert blocks 16, which will gradually insert into the fixing block 12. When inserted into the fixing block 12, the end of the insert block 16 will first push against it. After this push, the locking block 13 will tilt and then move away from the insert block 16. The movement path is as follows: when the insert 16 is fully inserted into the fixing block 12, the locking block 13 will correspond to the slot 17. At this time, the locking block 13 will return to its original position due to the force of the torsion spring and enter the slot 17. After entering, the locking block 13 will fix the slot 17, thereby connecting and fixing the top cover 14 and the pool body 1. When removing the top cover 14, first move the locking block 13 to rotate it out of the slot 17, and then rotate the top cover 14 in the opposite direction. After the pool body 1 and the top cover 14 are combined, the placement plate 21 will contact the liquid hydrogen pump. At this time, the bottom of the slide rod 2 will contact the top of the liquid hydrogen pump. The counterweight can then be placed on top of the placement plate 21, thereby pressing down the slide bar 2 through the weight, so that the slide bar 2 applies pressure to the liquid hydrogen pump from above; when the pool body 1 and the top cover 14 are joined, the fixing plate 3 will first be inserted into the fixing groove 31. After the pool body 1 and the top cover 14 are connected and fixed, the fixing plate 3 and the fixing groove 31 will be tightly attached, thereby increasing the seal at the connection between the pool body 1 and the top cover 14; when the slide bar 2 slides on the top cover 14, some oil can be poured into the placement tank 4, and then the placement tank 4 will absorb this oil into its own body. 2. When sliding, the slide rod 2 will contact the placement groove 4. At this time, the oil inside the placement groove 4 will be absorbed by the slide rod 2, thus coating the surface of the slide rod 2 with oil. When disassembling the top cover 14, moving one of the locking blocks 13 will drive the connected linkage rod 5 to move. When the linkage rod 5 moves, it will drive the other locking blocks 13 to move together, thus creating linkage. When the bottom of the slide rod 2 contacts the liquid hydrogen pump, the flexible ball 6 will first contact the liquid hydrogen pump. Then, when subjected to pressure, the flexible ball 6 will deform. When deformed, it will increase the downward movement space of the slide rod 2, thereby eliminating the hard contact force.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A structure for a cold storage tank for a liquid hydrogen pump, characterized in that: The system includes a pool body (1), with an outlet pipe (11) fixedly connected to the side wall of the pool body (1); multiple fixing blocks (12) fixedly connected to the end of the pool body (1); a locking block (13) rotatably connected to the middle of the fixing block (12); the locking block (13) and the fixing block (12) are connected by a torsion spring; a top cover (14) is provided on the top of the pool body (1); an inlet pipe (15) is fixedly connected to the top of the top cover (14); multiple insert blocks (16) are fixedly connected to the bottom of the inlet pipe (15); the insert blocks (16) and the fixing blocks (12) are in sliding fit; a slot (17) is provided in the middle of the insert blocks (16); the slot (17) and the locking block (13) are in sliding fit.

2. The structure of a cold storage tank for a liquid hydrogen pump according to claim 1, characterized in that: The top of the top cover (14) is slidably connected to a slide rod (2); a placement plate (21) is fixedly connected to the top of the slide rod (2).

3. The structure of a cold storage tank for a liquid hydrogen pump according to claim 2, characterized in that: The bottom of the top cover (14) is fixedly connected to a fixing plate (3); the top of the pool body (1) is provided with a fixing groove (31); the fixing plate (3) and the fixing groove (31) are correspondingly set and slidably fitted.

4. The structure of a cold storage tank for a liquid hydrogen pump according to claim 3, characterized in that: The top of the pool body (1) is provided with a placement groove (4); an oil-absorbing sponge (41) is fixed in the middle of the placement groove (4); the oil-absorbing sponge (41) and the slide rod (2) are connected through each other and slidably connected.

5. The structure of a cold storage tank for a liquid hydrogen pump according to claim 4, characterized in that: Linkage rods (5) are hinged between the locking blocks (13); multiple linkage rods (5) are provided on the locking blocks (13).

6. The structure of a cold storage tank for a liquid hydrogen pump according to claim 5, characterized in that: The slide bar (2) has flexible balls (6) on its surface; there are multiple flexible balls (6) on the slide bar (2).

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