Auxiliary tool for hoisting main steam isolation valve of nuclear power plant

Abstract

The utility model discloses a nuclear power station main steam isolation valve hoisting auxiliary tool, including the hanger, the middle part fixedly connected with the hanger post of hanger, be equipped with a plurality of adjusting grooves on the hanger, the both sides of adjusting groove are equipped with a plurality of thread holes respectively, the top of partial or all adjusting grooves is equipped with a plurality of hanging plate, the both ends of hanging plate are equipped with through -hole respectively, and the bolt is inserted in the through -hole, and the middle part of hanging plate is connected with the suspender, and the lower end fixedly connected with the sling of suspender, and the lower end of sling is connected with the hanger plate, and the hanger plate is installed with left clamping plate and right clamping plate, and the upper end of left clamping plate and the upper end of right clamping plate are connected through upper bolt, and the lower end of left clamping plate and the lower end of right clamping plate are connected through lower bolt. The adjusting groove of hanger and thread hole in the utility model, cooperate hanging plate, suspender, can adjust hoisting point and angle flexibly, guarantee the balance stability of main steam isolation valve each part hoisting, avoid shaking, collision damage. The combination of different thread holes and bolts satisfies the hoisting demand of different specifications components, and the versatility is strong.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting tool technology, specifically relating to an auxiliary tool for hoisting the main steam isolation valve of a nuclear power plant. Background Technology

[0002] During the maintenance of nuclear power plants, the main steam isolation valve requires regular disassembly and maintenance. The safety of the main steam isolation valve directly affects the stable operation of the nuclear power plant. Traditional methods of hoisting the main steam isolation valve often involve direct operation using general-purpose hoisting equipment. However, the main steam isolation valve has a complex structure, is heavy, and large in size, requiring disassembly into multiple components such as the valve shaft and hoisting them separately. Furthermore, the requirements for balance and positioning accuracy during hoisting are extremely high. Existing hoisting equipment is difficult to adjust flexibly in terms of hoisting point position and hoisting angle, which can easily cause the main steam isolation valve to sway and tilt during hoisting, affecting hoisting efficiency and posing a risk of collision damage. Additionally, different hoisting tools are needed for different components, making the entire hoisting process complex and inefficient. Therefore, developing a flexible, stable, and reliable hoisting auxiliary tool has become an urgent need to improve the quality and safety of main steam isolation valve hoisting operations in nuclear power plants. Utility Model Content

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a hoisting auxiliary tool for the main steam isolation valve of a nuclear power plant, including a hoist, a hoisting column fixedly connected to the middle of the hoist, a hoisting lug connected to the upper end of the hoist, a number of adjustment grooves provided on the hoist, a number of evenly spaced threaded holes provided on both sides of the adjustment grooves, a number of hanging plates provided above some or all of the adjustment grooves, a through hole provided at both ends of the hanging plate, a bolt inserted into the through hole and screwed into one of the threaded holes, a hoisting rod connected to the middle of the hanging plate, the lower end of the hoisting rod movably passing through the adjustment groove and fixedly connected to a hoisting rope, the lower end of the hoisting rope connected to a hanging plate, a left clamping plate and a right clamping plate installed on the hanging plate, a clamping groove provided on the inner side of the left clamping plate and the inner side of the right clamping plate respectively, the upper end of the left clamping plate and the upper end of the right clamping plate connected by an upper bolt, the lower end of the left clamping plate and the lower end of the right clamping plate connected by a lower bolt, and an insertion hole for the upper bolt to pass through on the hanging plate.

[0004] As a preferred embodiment of the above technical solution, the upper end of the boom is threaded with an upper nut and a lower nut, and the hanging plate is clamped between the upper nut and the lower nut.

[0005] As a preferred embodiment of the above technical solution, the upper end of the lifting rope is fixedly connected to a locking nut, the locking nut is threadedly connected to the lower end of the lifting rod, the lower end of the lifting rope is provided with a rope loop, and the lifting plate is provided with a lifting hole for the rope loop to pass through.

[0006] As a preferred embodiment of the above technical solution, the adjustment slots are arranged in a circular array around the center of the hanger, with all adjustment slots pointing towards the hanger column.

[0007] As a preferred embodiment of the above technical solution, a limiting plate is fixedly connected to the upper end of the boom.

[0008] The beneficial effects of this utility model are as follows: The auxiliary tool for hoisting the main steam isolation valve of a nuclear power plant, with its adjustable groove and threaded holes on the hanger, along with the hanging plate and lifting rod, allows for flexible adjustment of the hoisting point and angle, ensuring the balance and stability of each component of the main steam isolation valve during hoisting and preventing shaking or collision damage. Different combinations of threaded holes and bolts meet the hoisting needs of components of different specifications, demonstrating strong versatility. The nut and limit plate on the lifting rod enhance the connection stability; the connection design of the hoisting rope allows the left and right clamping plates to flexibly operate and clamp objects. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0010] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0011] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0012] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0013] Auxiliary tools for hoisting the main steam isolation valve of a nuclear power plant, such as Figure 1As shown, it includes a hanger 1, a hanging column 2 fixedly connected to the middle of the hanger 1, a lifting lug 3 connected to the upper end of the hanging column 2, several adjusting grooves 4 on the hanger 1, several evenly spaced threaded holes 5 on both sides of the adjusting grooves 4, several hanging plates 6 above some or all of the adjusting grooves 4, through holes 7 at both ends of the hanging plates 6, bolts 8 inserted into the through holes 7, and bolts 8 screwed into one of the threaded holes 5, a hanging rod 9 connected to the middle of the hanging plate 6, and the lower end of the hanging rod 9... The lifting device passes through the adjusting groove 4 and is fixedly connected to the lifting rope 10. The lower end of the lifting rope 10 is connected to the lifting plate 11. The lifting plate 11 is equipped with a left clamping plate 12 and a right clamping plate 13. The inner sides of the left clamping plate 12 and the right clamping plate 13 are respectively provided with clamping grooves 14. The upper ends of the left clamping plate 12 and the upper ends of the right clamping plate 13 are connected by upper bolts 15, and the lower ends of the left clamping plate 12 and the lower ends of the right clamping plate 13 are connected by lower bolts 16. The lifting plate 11 is provided with insertion holes for the upper bolts 15 to pass through. The left clamping plate 12 and the right clamping plate 13 are prepared in different specifications to meet the lifting needs of various components of the main steam isolation valve. When disassembling or assembling the main steam isolation valve, the corresponding specifications of the left clamping plate 12 and the right clamping plate 13 are used to clamp the designated parts of the components. By adjusting the position and number of the hanging plates 6, the lifting needs of different components can be met. Adjusting the position of the hanging plates 6 can also adjust the posture of the lifted components and adjust the stability of the entire lifting auxiliary tool.

[0014] Furthermore, the upper end of the lifting rod 9 is threadedly connected with an upper nut 17 and a lower nut 18, and the middle of the hanging plate 6 is provided with a through hole for the lifting rod 9 to pass through. The hanging plate 6 is clamped between the upper nut 17 and the lower nut 18. In this way, the height of the lifting rod 9 can be adjusted, thereby adjusting the height of the corresponding left clamping plate 12 and right clamping plate 13 below.

[0015] Furthermore, a locking nut 19 is fixedly connected to the upper end of the lifting rope 10, and the locking nut 19 is threadedly connected to the lower end of the lifting rod 9. A rope loop 20 is provided at the lower end of the lifting rope 10, and a lifting hole 21 is provided on the lifting plate 11 for the rope loop 20 to pass through. The lifting rope 10 can be easily replaced, reducing the risk caused by wear and tear on the lifting rope 10.

[0016] Furthermore, the adjustment slots 4 are arranged in a circular array around the center of the hanger 1, and all adjustment slots 4 point towards the hanging column 2. The number and position of the hanging plates 6 on each adjustment slot 4 are adjustable to accommodate different large components and meet the needs of lifting components in different postures.

[0017] Furthermore, a limiting plate 22 is fixedly connected to the upper end of the boom 9. The limiting plate 22 prevents the boom 9 from detaching from the hanging plate 6, thereby improving the safety of the boom 9.

[0018] It is worth mentioning that the technical features such as bolts involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be adopted using conventional choices in the field, and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0019] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.

Claims

1. A hoisting auxiliary tool for the main steam isolation valve of a nuclear power plant, characterized in that, The device includes a hanger, a hanging column fixedly connected to the middle of the hanger, a lifting lug connected to the upper end of the hanging column, several adjustment slots on the hanger, several evenly spaced threaded holes on both sides of the adjustment slots, several hanging plates above some or all of the adjustment slots, through holes at both ends of the hanging plates, bolts inserted into the through holes and screwed into one of the threaded holes, a hanging rod connected to the middle of the hanging plate, the lower end of the hanging rod moving through the adjustment slot and fixedly connected to a hanging rope, the lower end of the hanging rope connected to a hanging plate, a left clamping plate and a right clamping plate installed on the hanging plate, the inner side of the left clamping plate and the inner side of the right clamping plate respectively having clamping grooves, the upper ends of the left clamping plate and the upper ends of the right clamping plate being connected by upper bolts, the lower ends of the left clamping plate and the lower ends of the right clamping plate being connected by lower bolts, and the hanging plate having insertion holes for the upper bolts to pass through.

2. The auxiliary tool for hoisting the main steam isolation valve of a nuclear power plant as described in claim 1, characterized in that, The upper end of the boom is threaded with an upper nut and a lower nut, and the hanging plate is clamped between the upper nut and the lower nut.

3. The auxiliary tool for hoisting the main steam isolation valve of a nuclear power plant as described in claim 2, characterized in that, The upper end of the hoisting rope is fixedly connected to a locking nut, which is threaded to the lower end of the hoisting rod. The lower end of the hoisting rope is provided with a rope loop, and the hoisting plate is provided with a hoisting hole for the rope loop to pass through.

4. The auxiliary tool for hoisting the main steam isolation valve of a nuclear power plant as described in claim 1, characterized in that, The adjustment slots are arranged in a circular array around the center of the hanger, with each adjustment slot pointing towards the hanger column.

5. The auxiliary tool for hoisting the main steam isolation valve of a nuclear power plant as described in claim 1, characterized in that, A limit plate is fixedly connected to the upper end of the boom.

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