In-pipe cutting device for heat transfer surface pipe of reactor steam generator

A technology of steam generator and heat transfer surface, applied in pipe shearing device, shearing device, shearing machine, etc., can solve the problems of large dose of personnel exposure, long operation time, low degree of automation, etc., and reduce labor intensity and radiation exposure dose, small size, and the effect of improving the degree of automation

Active Publication Date: 2014-06-18
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device has the following disadvantages when performing in-pipe cutting: all manual operations, low degree of automation; the operator takes a long time to sample in the radioactive area, and the exposure dose to the personnel is large
[0004] After searching, there is no report on the internal cutting device of the heat transfer surface tube of the reactor steam generator

Method used

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  • In-pipe cutting device for heat transfer surface pipe of reactor steam generator
  • In-pipe cutting device for heat transfer surface pipe of reactor steam generator

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Embodiment Construction

[0020] Such as figure 1 As shown, the cutting device of the present invention includes a rotating part, a knife feeding part and an electric control system 17, and the rotating part and the knife feeding part are connected to each other by a brake wire steel wire 6, and are respectively connected to the electric control system 17 through wires.

[0021] Rotating parts: It consists of a rotating part servo motor 1, a rotating part reducer 2, an active synchronous pulley 3, a synchronous belt 4, a cutting assembly 5 and a rotating part frame 16.

[0022] The rotating part servo motor 1 and the rotating part reducer 2 are fixed on the rotating part frame 16 with screws after being connected with the shaft and the connection key; the cutting assembly 5 is fixed on the rotating part frame 16 through screws; the rotating part reducer 2 and the active After the synchronous belt pulley 3 is connected with the connecting key with a shaft, it is connected with the cutting assembly 5 ...

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PUM

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Abstract

The invention provides an in-pipe cutting device for a heat transfer surface pipe of a reactor steam generator. The cutting device comprises a rotating component, a cutter feeding component and an electric control system, wherein the rotation component and the cutter feeding component are mutually connected through a brake cable steel wire and are respectively connected with the electric control system through conducting wires. When the in-pipe cutting device provided by the invention is adopted, the cutting of the heat transfer surface pipe of the steam generator can be realized on the premise of not damaging the steam generator structure. The device has the advantages that the remote control of the cutting operation on the heat transfer surface of the steam generator can be realized, the automation degree of the heat transfer surface pipe sampling of the steam generator is improved, and in addition, the labor intensity of operators and the radiation illuminated quantity are effectively reduced.

Description

technical field [0001] The invention relates to an inspection and cutting device for the heat transfer surface tube of a nuclear reactor steam generator, in particular to an inner cutting device for the heat transfer surface tube of the reactor steam generator. Background technique [0002] The primary side pressure boundary of the nuclear reactor steam generator accounts for about 70% of the entire reactor coolant pressure boundary. Due to the long-term erosion and corrosion of the water flow and its special working conditions, the steam generator is the equipment with a high accident rate in the reactor. When the heat transfer surface tube is corroded and leaked, in order to analyze the cause of the damage, several sections of the corroded tube must be taken out as samples for metallographic research, so as to determine the damage mechanism and maintenance technology. For the steam generator that needs to be reused, its external structure cannot be damaged, and it can only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D21/14
Inventor 黄武兵王欠欠胡冬梅
Owner NUCLEAR POWER INSTITUTE OF CHINA
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