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Mounting device and mounting method for checking device of connection pipe welding line of steam generator

A technology for weld seam inspection and steam generator, which is applied in the field of non-destructive testing of the primary circuit system of nuclear power plants, to achieve the effects of reduced installation workload, convenient operation, and low probability of failure

Active Publication Date: 2014-02-05
RES INST OF NUCLEAR POWER OPERATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a device and installation method for the installation of the weld seam inspection device of the steam generator, so as to solve the problems of installation and positioning of the weld seam inspection device in the pipe without personnel entering the steam generator , to ensure the implementation of the entire weld ultrasonic automatic inspection process

Method used

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  • Mounting device and mounting method for checking device of connection pipe welding line of steam generator
  • Mounting device and mounting method for checking device of connection pipe welding line of steam generator
  • Mounting device and mounting method for checking device of connection pipe welding line of steam generator

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Embodiment 1

[0022] A device for installation of a steam generator weld inspection device according to the present invention is mainly composed of an intermediate rod 10, an operating rod 13, rotating joints 9, 11, an adjustable installation auxiliary bracket 15, a wire rope suspension assembly 12, and a wire rope 14. and so on.

[0023] Such as image 3 As shown, the pipe weld inspection device 8 is connected to one end of the middle rod 10 through the first rotating joint 9, and the other end of the middle rod 10 is connected to one end of the operating rod 13 through the second rotating joint 11; the wire rope suspension assembly 12 is fixed on the steam generator Inside, one end of the wire rope 14 of the wire rope suspension assembly 12 is fixed on the upper part of the middle rod 10, and the other end extends out of the steam generator. The external force applied by the transmitter controls the motion posture and installation angle of the pipe weld inspection device 8 .

[0024] Th...

Embodiment 2

[0028] The method for the installation of the device for the installation of the steam generator weld seam inspection device using the device described in embodiment 1, it comprises the steps:

[0029] (a) if image 3 As shown, the steel wire rope suspension assembly 12 is sent to the tube sheet inside the steam sender through a long pole tool outside the steam sender, and is fixed on the tube sheet. point of application of the lifting force of the process);

[0030] (b) Connect the end of the pipe weld inspection device 8 to one end of the middle rod 10 through the first rotating joint 9, and connect the other end of the middle rod 10 to one end of the operating rod 13 through the second rotating joint 11;

[0031] (c) By pulling the wire rope 14 and pushing the middle rod 10 and the operating rod 13, the pipe weld inspection device 8 and the middle rod 10 are sent to the inside of the steam transmitter;

[0032] (d) Rotate the operating rod 13 around the axis of the operat...

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Abstract

The invention provides a mounting device and a mounting method for a checking device of a connection pipe welding line of a steam generator. A steel wire suspension assembly is conveyed to a pipe plate in the steam generator by a long rod tool outside the steam generator and is fixedly arranged on the pipe plate; a steel wire rope is connected with the upper part of a middle rod by a pulley wheel; one end part of the checking device of the connection pipe welding line is connected with one end of the middle rod by a rotary joint I and the other end of the middle rod is connected with one end of an operation rod by a rotary joint II; the checking device of the connection pipe welding line and the middle rod are conveyed to the inner part of the steam generator by pulling the steel wire rope and pushing the middle rod and the operation rod; the operation rod is rotated around the axis of the operation rod so as to enable the checking device of the connection pipe welding line to be close to a welding line to be detected and then the scanning work is started. According to the mounting device and the mounting method for the checking device of the connection pipe welding line of the steam generator, the long rod tool composed of the operation rod and the middle rod and the steel wire rope are used for finishing the mounting of the checking device; a mounting part is simple and the operation is convenient; the mounting working amount and the exposure dose of workers are reduced.

Description

technical field [0001] The invention relates to a non-destructive testing technology for a primary circuit system of a nuclear power plant, in particular to a device and an installation method for installing a weld seam inspection device for a steam generator connection. Background technique [0002] According to the relevant requirements of the ASME code, the steam generator of the nuclear power unit takes over the dissimilar metal weld as the thick-walled weld of the main circuit, which is a mandatory inspection content of the regulations, and the inspection range is 1 / 3 of the inner wall thickness of the weld. Up to now, the steam generator takeover weld inspection devices of nuclear power units all choose ultrasonic inspection from the approach method of the outer wall of the weld. With the improvement of the design of the nuclear power unit, the wall thickness of the welded seam of the nozzle has been greatly increased compared with the previous one. Due to the limitat...

Claims

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Application Information

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IPC IPC(8): G21C17/017G01N29/26
CPCY02E30/30
Inventor 朱性利张志义周礼峰周亮辛露
Owner RES INST OF NUCLEAR POWER OPERATION