Manhole cover plate hoisting device for nuclear power unit voltage stabilizer

A technology for manholes and hoisting devices of voltage stabilizers, which is applied in the directions of safety devices, transportation and packaging, load hanging components, etc. Lightweight effect

Pending Publication Date: 2021-02-05
CNNC NUCLEAR POWER OPERATION MANAGEMENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to solve the problem that the coarse centering operation of the manhole cover is difficult. The purpose of the present invention is to provide a method that can effectively adjust the inclination angle of the manhole cover, realize th

Method used

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  • Manhole cover plate hoisting device for nuclear power unit voltage stabilizer
  • Manhole cover plate hoisting device for nuclear power unit voltage stabilizer
  • Manhole cover plate hoisting device for nuclear power unit voltage stabilizer

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Embodiment Construction

[0054] In the description of the present invention, it should be understood that the terms "left end", "right end", "upper", "lower", "above", "below", "top", "bottom" etc. indicate orientation or positional relationship Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred equipment or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the invention.

[0055] see image 3 According to the present invention, the manhole cover hoisting device for a voltage stabilizer of a nuclear power unit includes an upper wire rope module 1 , a sling 2 and a lower wire rope module 3 .

[0056] see Figure 4-6 , The spreader 2 includes a first rectangular tube 21 , two second rectangular tubes 22 , a lifting ring 23 , a r...

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Abstract

The invention particularly relates to a manhole cover plate hoisting device for a nuclear power unit voltage stabilizer. The manhole cover plate hoisting device consists of an upper steel wire rope module, a hoisting tool and a lower steel wire rope module. The upper steel wire rope module, the hoisting tool and the lower steel wire rope module are connected in sequence. The upper steel wire ropemodule is connected with a chain block above a manhole cover plate of the voltage stabilizer in a hoisting manner. The lower steel wire module is connected with lifting rings on the side face of the manhole cover plate in a lifting mode, and the angle between the manhole cover plate and the lifting direction is adjusted. The provided manhole cover plate hoisting device for the nuclear power unit voltage stabilizer is light, easy to operate, reliable and safe, and the working time of maintainers in a high-irradiation area can be shortened; the operation difficulty when the manhole cover plate is reassembled is reduced, and the safety of field operation is improved; and the maintenance efficiency is improved, the overhaul time is shortened, and more economic benefits are gained for a nuclearpower station.

Description

technical field [0001] The invention relates to the technical field of hoisting, in particular to a hoisting device for a manhole cover plate of a voltage stabilizer of a nuclear power unit. Background technique [0002] There is an included angle of 45° between the center line of the manhole of the voltage stabilizer of the two million-unit units in Fangjiashan and the direction of hoisting the cover plate (see figure 1 ). The diameter of the manhole cover of the voltage stabilizer is 686mm, and the thickness is 130mm. The entire cover is connected to the main body of the voltage stabilizer by 16 M48×4 bolts. The weight of the cover is about 370Kg (see figure 2 ). The maintenance of the manhole of the voltage stabilizer requires opening and reinstalling the manhole cover. Since the radiation dose at the manhole of the voltage stabilizer is quite high, it is not suitable for maintenance personnel to stay for a long time. When reassembling the manhole cover, the hoisting...

Claims

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Application Information

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IPC IPC(8): B66C1/12B66C13/08B66C15/00
CPCB66C1/12B66C13/08B66C15/00
Inventor 周伟杨宏刚翁云峰黄慧敏费志松方超飞施雪峰胡强王成林杜岩松
Owner CNNC NUCLEAR POWER OPERATION MANAGEMENT
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