A hoisting tool for a large-diameter gate valve plate used in a nuclear power plant

A hoisting tool and large-diameter technology, which is applied in the field of hoisting tools for large-diameter gate valve plates used in nuclear power plants, can solve the problems of large space occupied by the hoisting device, and achieve the effects of reducing workload, wide application range, and reliable strength

Active Publication Date: 2018-03-09
CLP CHINA NUCLEAR POWER ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned hoisting device takes up a lot of space and is not suitable for hoisting the valve plate in the narrow space of the nuclear power plant.

Method used

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  • A hoisting tool for a large-diameter gate valve plate used in a nuclear power plant
  • A hoisting tool for a large-diameter gate valve plate used in a nuclear power plant

Examples

Experimental program
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Embodiment

[0025] Such as figure 1 , figure 2 As shown, a large-diameter gate valve plate hoisting tool for nuclear power plants, wherein the upper end of the valve plate 4 is provided with a T-shaped groove 41, the hoisting tool includes a lifting ring 1, a frame block 2 and a T-shaped block 3, when hoisting the valve plate 4, The T-shaped block 3 is inserted into the T-shaped groove 41, the frame-shaped block 2 is fastened on the upper end of the valve plate 4, and the T-shaped block 3 is clamped inside, and the lower end of the suspension ring 1 is connected with a bolt 11, and the bolt 11 is from top to bottom. After passing through the frame block 2, it is screwed on the T-shaped block 3. Wherein, the top surface of the valve plate 4 is a horizontal plane, and the upper end of the T-shaped groove 41 extends to the top surface of the valve plate 4 . The structure and size of the block 3 and the T-shaped slot 41 are the same. When the T-shaped block 3 is clamped in the T-shaped slo...

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Abstract

The invention relates to a hoisting tool for a large-diameter gate valve plate used in a nuclear power plant. A T-shaped groove is provided on the upper end of the valve plate. The hoisting tool includes a hoisting ring, a frame-shaped block and a T-shaped block. In the groove, the frame-shaped block is fastened on the upper end of the valve plate, and the T-shaped block is clamped inside, and the lower end of the lifting ring is connected with bolts, and the bolts pass through the frame-shaped block from top to bottom, and are threaded on the T-shaped block; The structure and size of the T-block and the T-slot are the same. When the T-block is clamped in the T-slot, the upper surface of the T-block is flush with the top surface of the valve plate, and the thickness of the T-block is the same as the thickness of the top of the valve plate. Similarly, the center of the upper end of the T-shaped block is provided with a threaded hole for bolt thread connection, and the center of the top plate is provided with a through hole for the bolt to pass through. Compared with the prior art, the present invention has the advantages of simple structure, safety and reliability, convenient maintenance and wide application range.

Description

technical field [0001] The invention relates to a hoisting tool, in particular to a hoisting tool for a large-diameter gate valve plate used in a nuclear power plant. Background technique [0002] At present, the valve stem and the valve plate of large-diameter gate valves in nuclear power plants are mostly connected by T-shaped connections. The usual method of hoisting the valve plate is to lift the connection between the valve stem and the valve plate as a whole. The space is narrow, and there is a risk of the valve plate slipping and hurting people and damaging equipment. [0003] Chinese patent CN 102530708 A discloses a lifting device, which belongs to the field of lifting devices. The lifting device includes a lifting ring, the lower end of the lifting ring is connected with a bearing seat, the lower end surface of the bearing seat is fixedly connected with the outer ring of the bearing, and the center line of the bearing is on the same line as the center line of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C1/22
Inventor 徐宏光宋四海赵明智
Owner CLP CHINA NUCLEAR POWER ENG TECH
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