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Nuclear power station manhole cover plate assembling and disassembling tool

A technology for manhole covers and nuclear power plants, which is applied in the direction of lifting devices, crowbars, etc., which can solve the problems of easy mechanical damage, crowbar damage to bolt hole threads, damage to rubber lining or dipping layer, etc., to achieve equipment damage and personal injury. Low risk of injury, low risk of personal injury, and high safety factor

Pending Publication Date: 2018-10-16
CLP CHINA NUCLEAR POWER ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Use a crowbar to forcefully open the stuck manhole cover, especially the rubber-lined or plastic-impregnated manhole flange sealing surface, which may damage the rubber-lined or plastic-impregnated layer of the flange sealing surface
[0004] (2) When using a crowbar to disassemble and assemble a heavy cover plate, due to the constraints of human factors and the limitation of using the crowbar power arm, it is more laborious and prone to mechanical damage
[0005] (3) When reassembling the manhole cover, in order to ensure that the concentricity and parallelism of the flange meet the requirements, it is necessary to use a crowbar to adjust. There is a risk that the crowbar will damage the thread of the bolt hole, and the adjustment is inconvenient

Method used

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  • Nuclear power station manhole cover plate assembling and disassembling tool
  • Nuclear power station manhole cover plate assembling and disassembling tool
  • Nuclear power station manhole cover plate assembling and disassembling tool

Examples

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Embodiment

[0035] Aiming at the practical problems encountered in the process of disassembling and assembling the manhole cover, the invention provides a tool for disassembling and assembling the manhole cover of a nuclear power plant.

[0036] Such as Figure 1-7 As shown, the tool structure is mainly composed of a movable head 1, a movable support ring 2, a latch 3, a limit pin 4, and a crowbar 5.

[0037] Wherein the crowbar 5 is connected with the movable head 1 through the latch 3, and the crowbar 5 can swing around the movable head 180° at the matching position of the groove axis of the movable head 1. The limit hole on the pry bar 5 is used for the insertion of the limit pin 4, and is used to prevent the movable support ring 2 from coming out of the screw hole of the manhole cover. The position of the thickness adjustment support ring on the pry bar 5 of the cover plate determines the support point.

[0038] The movable head 1 and the movable support ring 2 are made of aluminum ...

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PUM

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Abstract

The invention relates to a nuclear power station manhole cover plate assembling and disassembling tool. The assembling and disassembling tool is used for opening manhole cover plates of nuclear powerplant container equipment. The assembling and disassembling tool comprises a pair of assembling and disassembling rods which are arranged in a complete set, each assembling and disassembling rod comprises a prying rod, a movable supporting ring and a movable head; and for each assembling and disassembling rod, the movable head is arranged at the top end of the prying rod and is hinged to the prying rod, a limiting hole is formed in the middle of the prying rod, a limiting pin is inserted into the limiting hole, and the movable supporting ring sleeves the prying rod and slides between the movable head and the limiting pin. Compared with the prior art, the assembling and disassembling tool has the advantages of being labor-saving, safe, capable of protecting a flange surface, wide in application range and the like.

Description

technical field [0001] The invention relates to a disassembly and assembly tool, in particular to a disassembly and assembly tool for a manhole cover plate of a nuclear power plant. Background technique [0002] At present, in nuclear power plants, it is necessary to open the manhole cover for internal inspection of container equipment, and most of the manholes are flange connections. For high-pressure container equipment (such as steam generators, passive waste heat discharge heat exchangers, etc.), the manhole cover is thick and heavy, and some even hundreds of kilograms, and there are manhole covers when the equipment runs for a long time The case of sticking together with the tank body. At present, the method adopted by maintenance personnel to disassemble and assemble the manhole door of this type of container is to use a crowbar, a jacking wire, and a positioning pin to complete the disassembly, and there are the following problems: [0003] (1) Use a crowbar to forc...

Claims

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Application Information

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IPC IPC(8): B66F15/00
CPCB66F15/00
Inventor 陈海芳徐宏光宋四海吕闯
Owner CLP CHINA NUCLEAR POWER ENG TECH
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