Dry type fuel storage tank for storage

Abstract

The utility model discloses a dry type fuel storage tank for storage, which comprises a tank body, the bottom of the tank body is fixedly connected with a support leg, and one side of the inside of the support leg far away from the tank body is rotatably connected with a first rotating plate. According to the dry type fuel storage tank for storage, a servo motor at the bottom of the tank body is controlled to drive a second bevel gear to rotate forwards, the second bevel gear drives a worm to rotate through a first bevel gear, the worm drives a first rotating plate to rotate downwards through a worm gear, the first rotating plate is matched with a second rotating plate to drive a supporting frame to expand outwards, and meanwhile universal wheels are driven to move downwards; due to the fact that the universal wheels can be unfolded outwards, the overall supporting area of the four universal wheels is increased, the gravity center of the tank body is lowered, the tank body can be moved more stably, a crane or a forklift does not need to be used, and use is more convenient. And moreover, the cost is saved, the operation is more convenient, and the influence of the site is smaller.

Description

Technical Field

[0001] This utility model relates to the field of fuel storage tank technology, and more specifically, to a dry fuel storage tank. Background Technology

[0002] In dry storage of spent fuel in nuclear power plants, fuel tanks already loaded with spent fuel assemblies are often placed horizontally in concrete horizontal modules, and then the chamber inlet is sealed for long-term storage of the fuel tanks.

[0003] Currently, some existing fuel storage tanks consist of a tank body and support legs at the bottom of the tank. Because the tank body is relatively large and heavy, cranes or forklifts are often needed when moving the tank body. The use of cranes and forklifts is not only affected by the site conditions, but also increases labor costs and is difficult to operate. Utility Model Content

[0004] The purpose of this utility model is to provide a dry-type fuel storage tank to solve the problems mentioned in the background art above:

[0005] Some existing fuel storage tanks consist of a tank body and support legs at the bottom of the tank. Because the tank body is relatively large and heavy, cranes or forklifts are often needed when moving the tank. The use of cranes and forklifts is not only affected by the site conditions, but also increases labor costs and is difficult to operate.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A dry fuel storage tank includes a tank body. A support leg is fixedly connected to the bottom of the tank body. A first rotating plate is rotatably connected to the inside of the support leg, away from the tank body. A support frame is rotatably connected to the outside of the first rotating plate. A caster wheel is fixedly connected to the bottom of the support frame. A fixed plate is fixedly connected to the inside of the support leg, below the first rotating plate. A worm gear is rotatably connected to one side of the fixed plate. A worm wheel is fixedly connected to the inside of the first rotating plate. The worm wheel meshes with the worm gear, and the worm gear and worm wheel have a self-locking characteristic to ensure the stability of the first rotating plate and prevent it from reversing. A first bevel gear is fixedly connected to one end of the worm gear. A servo motor is fixedly connected to the bottom of the tank body. A second bevel gear is fixedly connected to the output end of the servo motor. The second bevel gear meshes with the first bevel gear. The servo motor drives the second bevel gear to rotate, and the second bevel gear drives the worm gear to rotate through the first bevel gear.

[0008] Preferably, a second rotating plate is rotatably connected to the inside of the support leg near the tank body. The second rotating plate is rotatably connected to the support frame, and the first rotating plate and the second rotating plate are parallel to each other.

[0009] Preferably, the second rotating plate is the same size as the first rotating plate. The first rotating plate, in conjunction with the second rotating plate, drives the support frame to move, so that the support frame can always remain vertical when it moves.

[0010] Preferably, a limiting groove is provided inside the second bevel gear, and a limiting plate is slidably connected inside the limiting groove. The limiting plate is fixedly connected to the tank body, and a total of four limiting plates are provided, which are symmetrically distributed in a cross shape.

[0011] Preferably, the cross-sections of the limiting groove and the limiting plate are both L-shaped. The L-shaped limiting groove and the limiting plate can prevent the limiting plate from coming out of the limiting groove, and the limiting plate and the limiting groove ensure the stability of the second bevel gear when it rotates.

[0012] Preferably, a fixing frame is sleeved on the outside of the worm and located between the worm wheel and the first bevel gear. The fixing frame is fixedly connected to the support leg, and the worm is rotatably connected to the fixing frame. The worm is installed on one side of the fixing plate, and the fixing frame can provide auxiliary support for the worm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] A servo motor at the bottom of the tank drives the second bevel gear to rotate forward. The second bevel gear drives the worm gear to rotate through the first bevel gear. The worm gear drives the first rotating plate to rotate downward through the worm wheel. The first rotating plate, in conjunction with the second rotating plate, drives the support frame to unfold outward, simultaneously moving the casters downward until the casters contact the ground and lift the bottom legs of the tank off the ground. Because the casters can unfold outward, the overall support area of ​​the four casters is increased, thereby lowering the center of gravity of the tank and making it more stable when moving the tank. After the casters are unfolded, the position of the tank can be adjusted using the casters without the need for a crane or forklift, making it more convenient to use, saving costs, and making operation more convenient, with less impact from the site conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the support frame of this utility model before it is unfolded.

[0016] Figure 2 This is a schematic diagram of the structure of the support frame of this utility model after it has been unfolded.

[0017] Figure 3 This is a schematic diagram of the support frame of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the second bevel gear of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the fixing frame of this utility model;

[0020] Figure 6 This is a cross-sectional schematic diagram of the second bevel gear of this utility model.

[0021] The following are the labels in the diagram: 1. Tank body; 2. Support leg; 3. First rotating plate; 4. Support frame; 5. Caster wheel; 6. Fixed plate; 7. Worm gear; 8. Worm wheel; 9. First bevel gear; 10. Servo motor; 11. Second bevel gear; 12. Second rotating plate; 13. Limiting groove; 14. Limiting plate; 15. Fixed frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 6 A dry fuel storage tank includes a tank body 1. A support leg 2 is fixedly connected to the bottom of the tank body 1. A first rotating plate 3 is rotatably connected to the inside of the support leg 2, away from the tank body 1. A support frame 4 is rotatably connected to the outside of the first rotating plate 3. A caster wheel 5 is fixedly connected to the bottom of the support frame 4. A fixed plate 6 is fixedly connected to the inside of the support leg 2, below the first rotating plate 3. A worm gear 7 is rotatably connected to one side of the fixed plate 6. A worm wheel 8 is fixedly connected to the inside of the first rotating plate 3. The worm wheel 8 meshes with the worm gear 7. The worm gear 7 has a self-locking characteristic to ensure the stability of the first rotating plate 3 and prevent the first rotating plate 3 from reversing. One end of the worm gear 7 is fixedly connected to the first bevel gear 9. The bottom of the tank body 1 is fixedly connected to the servo motor 10. The output end of the servo motor 10 is fixedly connected to the second bevel gear 11. The second bevel gear 11 meshes with the first bevel gear 9. The servo motor 10 drives the second bevel gear 11 to rotate. The second bevel gear 11 drives the worm gear 7 to rotate through the first bevel gear 9. The worm gear 7 then drives the first rotating plate 3 to rotate through the worm wheel 8.

[0024] Furthermore, a second rotating plate 12 is rotatably connected to the inside of the support leg 2 on the side near the tank body 1. The second rotating plate 12 is rotatably connected to the support frame 4, and the first rotating plate 3 and the second rotating plate 12 are parallel to each other.

[0025] Furthermore, the second rotating plate 12 is the same size as the first rotating plate 3. The first rotating plate 3 works in conjunction with the second rotating plate 12 to move the support frame 4. Since the second rotating plate 12 is the same size as the first rotating plate 3, the support frame 4 can always remain vertical when the entire support frame 4 moves.

[0026] Furthermore, a limiting groove 13 is provided inside the second bevel gear 11, and a limiting plate 14 is slidably connected inside the limiting groove 13. The limiting plate 14 is fixedly connected to the tank body 1. A total of four limiting plates 14 are provided, which are symmetrically distributed in a cross shape.

[0027] Furthermore, the cross-sections of the limiting groove 13 and the limiting plate 14 are both L-shaped. The L-shaped limiting groove 13 and the limiting plate 14 can prevent the limiting plate 14 from coming out of the limiting groove 13. The limiting plate 14 and the limiting groove 13 not only ensure the stability of the second bevel gear 11 when it rotates, but also limit the position of the second bevel gear 11.

[0028] Furthermore, a fixing frame 15 is fitted on the outside of the worm 7 and between the worm wheel 8 and the first bevel gear 9. The fixing frame 15 is fixedly connected to the support leg 2, and the worm 7 is rotatably connected to the fixing frame 15. The worm 7 is installed on one side of the fixing plate 6. In order to ensure the overall stability of the worm 7, the fixing frame 15 is added to provide auxiliary support for the worm 7.

[0029] The steps for using this utility model are as follows: When using this dry-type fuel storage tank, if it is necessary to readjust the position of the tank body 1, the servo motor 10 at the bottom of the tank body 1 drives the second bevel gear 11 to rotate forward. The second bevel gear 11 drives the worm gear 7 to rotate through the first bevel gear 9. The worm gear 7 drives the first rotating plate 3 to rotate downward through the worm wheel 8. The first rotating plate 3, together with the second rotating plate 12, drives the support frame 4 to unfold outward, and at the same time drives the casters 5 to move downward until the casters 5 contact the ground and lift the support legs 2 at the bottom of the tank body 1 off the ground. Since the casters 5 can unfold outward, the overall support area of ​​the four casters 5 is increased, thereby lowering the center of gravity of the tank body 1, making it more stable when moving the tank body 1. After the casters 5 are unfolded, the position of the tank body 1 can be adjusted by the casters 5 without the need for a crane or forklift, making it more convenient to use, saving costs, and easier to operate, with less impact from the site conditions.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dry storage fuel tank, comprising a tank body (1), the bottom of the tank body (1) is fixedly connected with a supporting leg (2), characterized in that: The inside of the support leg (2) is rotatably connected with a first rotating plate (3) away from the side of the tank body (1), the outside of the first rotating plate (3) is rotatably connected with a support frame (4), the bottom of the support frame (4) is fixedly connected with a universal wheel (5), the inside of the support leg (2) and below the first rotating plate (3) is fixedly connected with a fixed plate (6), one side of the fixed plate (6) is rotatably connected with a worm (7), the inside of the first rotating plate (3) is fixedly connected with a worm wheel (8), the worm wheel (8) is meshedly connected with the worm (7), one end of the worm (7) is fixedly connected with a first bevel gear (9), the bottom of the tank body (1) is fixedly connected with a servo motor (10), the output end of the servo motor (10) is fixedly connected with a second bevel gear (11), the second bevel gear (11) is meshedly connected with the first bevel gear (9).

2. The fuel tank for dry storage according to claim 1, characterized by: The inside of the support leg (2) is rotatably connected with a second rotating plate (12) close to the side of the tank body (1), the second rotating plate (12) is rotatably connected with the support frame (4).

3. The fuel tank for dry storage according to claim 2, characterized by: The second rotating plate (12) is the same size as the first rotating plate (3).

4. The fuel tank for dry storage according to claim 1, characterized by: The inside of the second bevel gear (11) is provided with a limiting groove (13), the inside of the limiting groove (13) is slidably connected with a limiting plate (14), the limiting plate (14) is fixedly connected with the tank body (1).

5. The fuel tank for dry storage according to claim 4, characterized by: The cross sections of the limiting groove (13) and the limiting plate (14) are both L-shaped structures.

6. The fuel tank for dry storage according to claim 1, characterized by: The outside of the worm (7) and between the worm wheel (8) and the first bevel gear (9) is sleeved with a fixing frame (15), the fixing frame (15) is fixedly connected with the support leg (2), and the worm (7) is rotatably connected with the fixing frame (15).

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