A pneumatic switch protection device suitable for indoor hangers of spent fuel dry process

Abstract

The present invention relates to the technical field of indoor hangers for spent fuel dry process, and specifically to a pneumatic switch protection device suitable for indoor hangers for spent fuel dry process, comprising a square table, the four corners of the bottom surface of the square table are rotatably connected to the feet through limit hinges, the bottom surface of the feet is provided with grooves, a rubber protective pad is inserted in the groove, and the upper end of the rear wall of the square table is rotatably connected to the protective cover through a hinge. The protective cover of the present invention is made of transparent plastic, which on the one hand protects the switch control rod from being accidentally touched, reducing human errors, and on the other hand allows the staff to observe the state of the operating rod anytime and anywhere, optimizing the spent fuel dry process flow, the protective cover is connected to the square table in the form of a hinge, which is convenient for the staff to switch the protective cover, reduces the time of operating the switch control rod, and reduces the potential radiation protection risk of the equipment, and the wire drum effectively protects the integrity of the single-joint pipeline, preventing the staff from stepping on and pulling the single-joint pipeline to cause the joint to fall off.

Description

Technical Field

[0001] The invention relates to the technical field of spent fuel dry process indoor hangers, and in particular to a pneumatic switch protection device suitable for spent fuel dry process indoor hangers. Background Art

[0002] In the early stage of construction, nuclear power plants have built storage pools for spent fuel. Due to the limited storage capacity of spent fuel pools, as the operating years of the units increase, the amount of spent fuel components generated increases year by year, and conventional storage can no longer meet the rapid development of China's nuclear power industry. With the development and utilization of China's nuclear power technology, the domestic nuclear power industry has gradually introduced, digested, absorbed and promoted the spent fuel dry storage process.

[0003] During the dry storage process, a dedicated indoor hoist for the spent fuel dry transfer container is required to lift the transfer container in the nuclear island. The dedicated indoor hoist currently in use is powered by compressed air to open and close the hoist boom. The control of the compressed air power is achieved by a dedicated control box for the indoor hoist. The existing pneumatic switch control box is designed with a metal shell, and there is a 10cm long handle on the top to control the opening and closing of the indoor hoist boom. There are two joint sleeves on the front side of the control box, which can be connected to the hoist cylinder using a double-headed pipeline; there is a joint sleeve on the back side of the control box, which can be connected to the maintenance air source using a single-headed pipeline.

[0004] In the prior art, when using the indoor dry process hoist for spent fuel, the control box is placed on the ground next to the evaporator cover. After operating the pneumatic switch, it is easy for people to touch it by mistake, causing the boom of the indoor hoist to open, causing the hoisted objects to fall and causing equipment damage. In severe cases, it may trigger the earthquake signal of the nuclear island, causing an emergency shutdown, or cause casualties, resulting in serious consequences. Placing the control box on the ground may cause the surface of the box to be contaminated. When people carry or operate the control box, the contaminated box will cause the pollution to spread. Furthermore, the pipeline connecting the control box to the maintenance air source is placed on the ground, which can easily cause people to pull the pipeline when walking. If the air pipe connection is disconnected during pulling, it will cause the serious consequence of the transfer container falling. Summary of the invention

[0005] In view of the above-mentioned problems, the present invention proposes a pneumatic switch protection device suitable for a hanger in a spent fuel dry process room.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0007] A pneumatic switch protection device suitable for a spent fuel dry process indoor hanger comprises a square table, wherein the four corners of the bottom surface of the square table are rotatably connected to feet via limit hinges, the bottom surface of the feet is provided with grooves, a rubber protection pad is inserted into the groove, the upper end of the rear wall of the square table is rotatably connected to a protection cover via a hinge, a switch box body is provided at the rear end of the top surface of the square table, and a handle is fixedly provided at the middle of the left wall of the square table.

[0008] Preferably, the right end of the top surface of the square table is provided with two warning lights in a left-right symmetrical structure, the left end of the top surface of the square table is provided with a self-locking device, and the front end of the top surface of the square table is provided with a barometer.

[0009] Preferably, a switch control lever is rotatably connected to the front end of the top face of the switch box body, a double-headed air pipe interface is connected to the rear end of the switch box body, and the rear end of the switch box body is in frictional contact with the protective cover.

[0010] Preferably, the square table has a hollow structure and is made of stainless steel.

[0011] Preferably, the protective cover is made of transparent plastic, and the protective cover is tightly pressed against the square platform.

[0012] Preferably, a wire drum is sleeved in the middle of the square table, a single-joint pipeline is wound on the outer wall of the wire drum, an L-shaped rod is fixed in the middle of the bottom surface of the wire drum, and a rocker is rotatably connected to the front end of the bottom of the L-shaped rod.

[0013] Preferably, a through groove is opened in the middle of the front surface of the square table, and the single-joint pipeline passes through the through groove along to the outside and is slidably connected through the through groove.

[0014] Preferably, the lower end of the wire drum is rotatably connected to the lower end of the square table, and a turn mark is provided in the middle of the top surface of the square table.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. The protective cover of the present invention is made of transparent plastic, which protects the switch control lever from being accidentally touched, reducing human errors, and allows the staff to observe the state of the operating lever anytime and anywhere, optimizing the spent fuel dry process. The protective cover is connected to the square table in the form of a hinge, which is convenient for the staff to open and close the protective cover, reducing the time for operating the switch control lever and reducing the potential radiation protection risk of the equipment.

[0017] 2. The present invention adopts a square table made of stainless steel as the main body of the protection device, so that the device as a whole is solid and reliable, and the stability of the device is improved. The single-joint pipeline can be connected and taken out at any time through the through groove, which facilitates the operation of the staff while protecting the switch box and improves the work efficiency.

[0018] 3. The wire reel of the present invention effectively protects the single-joint pipeline. The rocker pushes the wire reel to rotate along the square table, so that the single-joint pipeline slides along the through groove, which facilitates the retraction and release of the single-joint pipeline and improves the use efficiency. On the one hand, it prevents the staff from stepping on and pulling the single-joint pipeline to cause the joint to fall off, avoiding the disconnection and the rotating container falling; on the other hand, it protects the staff from being tripped by the excessively long single-joint pipeline, reduces personnel costs, and reduces industrial safety risks.

[0019] 4. The rubber protective pad of the present invention effectively reduces the risk of radiation protection. If the base is in direct contact with the ground and becomes contaminated, when personnel carry or operate the table, the contaminated table comes into contact with the operator and causes the contamination to spread. The rubber protective pad can be removed along the groove for replacement, which effectively prevents the spread of contamination.

[0020] 5. The present invention significantly improves the friction between the foot and the ground through the use of rubber protection pads, improves the grip performance, reduces the risk of the square table tipping over, and reduces the possibility of human error. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only for the present invention to protect some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the disassembly of the rubber protection structure of the present invention;

[0024] Figure 3 A top view of the square platform structure of the present invention;

[0025] Figure 4 It is a cross-sectional view of the cable drum structure of the present invention;

[0026] Figure 5 It is a rear view of the double-ended tracheal interface structure of the present invention;

[0027] Figure 6 It is a bottom view of the rocker structure of the present invention.

[0028] Explanation of the numbers in the figure: 1. Square table; 2. Ground foot; 3. Groove; 4. Rubber protective pad; 5. Protective cover; 6. Switch box body; 7. Switch control lever; 8. Handle; 9. Warning light; 10. Self-locking; 11. Pressure gauge; 12. Double-head air pipe interface; 13. Limit hinge; 14. Wire reel; 15. Single-joint pipeline; 16. L-shaped rod; 17. Rocker; 18. Through slot; 19. Turn sign. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. 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.

[0030] like Figure 1-6 As shown, a pneumatic switch protection device suitable for a spent fuel dry process indoor hanger comprises a square platform 1, wherein the four corners of the bottom surface of the square platform 1 are rotatably connected to feet 2 through limit hinges 13, a groove 3 is provided on the bottom surface of the foot 2, a rubber protection pad 4 is inserted in the groove 3, a protection cover 5 is rotatably connected to the upper end of the rear wall of the square platform 1 through a hinge, a switch box body 6 is provided on the rear end of the top surface of the square platform 1, and a handle 8 is fixedly provided on the middle of the left wall of the square platform 1.

[0031] The right end of the top surface of the square platform 1 is symmetrically structured with two warning lights 9, the left end of the top surface of the square platform 1 is provided with a self-locking 10, and the front end of the top surface of the square platform 1 is provided with a barometer 11.

[0032] The switch box body 6 is rotatably connected to a switch control rod 7 at the front end of the top surface, and the switch box body 6 is connected to a double-headed air pipe interface 12 at the rear end. The rear end of the switch box body 6 is in frictional contact with the protective cover 5 .

[0033] The square platform 1 is a hollow structure and is made of stainless steel.

[0034] The protective cover 5 is made of transparent plastic, and the protective cover 5 is tightly pressed against the square platform 1 .

[0035] A wire drum 14 is sleeved in the middle of the square platform 1, and a single-joint pipeline 15 is wound on the outer wall of the wire drum 14. An L-shaped rod 16 is fixed in the middle of the bottom surface of the wire drum 14, and a rocker 17 is rotatably connected to the front end of the bottom of the L-shaped rod 16.

[0036] A through slot 18 is provided in the middle of the front surface of the square platform 1 , and the single-joint pipeline 15 passes through the through slot 18 and extends to the outside and is slidably connected to the through slot 18 .

[0037] The lower end of the wire drum 14 is rotatably connected to the lower end of the square platform 1 , and a turning mark 19 is provided in the middle of the top surface of the square platform 1 .

[0038] The working principle of the present invention is that when using the present invention, first insert the rubber protective pad 4 into the groove 3 and snap it with the foot 2 for installation, then rotate the foot 2 along the limit hinge seat 13 for limiting, adjust the square platform 1 to a suitable placement position, start the switch box body 6, install the protective cover 5 through the hinge, wind the single-joint pipeline 15 on the wire drum 14, expose a sufficient length to be connected to the single-head interface of the external control box, fix the single-joint pipeline 15 on the buckle of the wire drum 14, and complete the installation, turn the rocker 17 to rotate the wire drum 14 along the square platform 1 through the L-shaped rod 16, and drag the single-joint pipeline 15 through the through groove 18 Move to a suitable use position and connect it with an external maintenance air source, take out the external double-ended pipeline and connect it with the double-ended air pipe interface 12, and then connect the other end of the double-ended pipeline with the external spent fuel dry process indoor hanger cylinder, so that the protective cover 5 is rotated open along the hinge, the switch box body is the pneumatic switch of the spent fuel dry process indoor hanger, operate the switch control lever 7 according to the requirements of the person in charge of the work, and facilitate the operation through the turn mark 19. After the work is completed, reverse the above steps, rotate the rocker 17 in the reverse direction to make the wire drum 14 reel the single-joint pipeline 15, keep the switch control lever 7 at zero position, close the protective cover 5, and properly store the double-ended pipeline to complete the work.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pneumatic switch protection device for a hanger in a spent fuel dry process room, characterized in that: The invention comprises a square platform (1), wherein the four corners of the bottom surface of the square platform (1) are rotatably connected to the feet (2) through limit hinges (13), the bottom surface of the feet (2) is provided with a groove (3), a rubber protective pad (4) is inserted into the groove (3), the upper end of the rear wall of the square platform (1) is rotatably connected to the protective cover (5) through a hinge, the rear end of the top surface of the square platform (1) is provided with a switch box body (6), and the middle part of the left wall of the square platform (1) is fixedly provided with a handle (8); The right end of the top surface of the square platform (1) is symmetrically structured with two warning lights (9), the left end of the top surface of the square platform (1) is provided with a self-locking (10), and the front end of the top surface of the square platform (1) is provided with a barometer (11); The front end of the top face of the switch box body (6) is rotatably connected to a switch control rod (7), the rear end of the switch box body (6) is connected to a double-headed air pipe interface (12), and the rear end of the switch box body (6) is in frictional contact with the protective cover (5); The square platform (1) has a hollow structure and is made of stainless steel; The protective cover (5) is made of transparent plastic, and the protective cover (5) is tightly pressed onto the square table (1); A wire drum (14) is sleeved in the middle of the square platform (1), a single-joint pipeline (15) is wound around the outer wall of the wire drum (14), an L-shaped rod (16) is fixedly arranged in the middle of the bottom surface of the wire drum (14), and a rocker (17) is rotatably connected to the front end of the bottom surface of the L-shaped rod (16); A through groove (18) is provided in the middle of the front surface of the square platform (1), and the single-joint pipeline (15) passes through the through groove (18) and extends to the outside and is slidably connected to the through groove (18); The lower end of the wire drum (14) is rotatably connected to the lower end of the square platform (1), and a turning mark (19) is provided in the middle of the top surface of the square platform (1).

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