Lifting tool for horizontal steam generator heat transfer pipe eddy current detection device

Abstract

The invention belongs to the technical field of nuclear power station steam generator heat transfer pipe nondestructive testing, and particularly relates to a lifting tool for a horizontal steam generator heat transfer pipe eddy current detection device. In order to solve the problems, a complete set of lifting method for the horizontal steam generator heat transfer pipe eddy current detection device is provided. The lifting tool is characterized by comprising a stand column, front-end scaffolds and a tail end scaffold, the stand column is arranged on the outer side of a detection device bodyand is used for fixing the detection device body, the plurality of front-end scaffolds are provided totally and are sequentially arranged from top to bottom in the length direction of the stand column, the tail-end scaffold is arranged at the tail end of the stand column, the front-end scaffolds and the tail-end scaffold are jointly used for providing support for the stand column and the detectiondevice body.

Description

technical field [0001] The invention belongs to the technical field of non-destructive testing of steam generator heat transfer tubes of nuclear power plants, and in particular relates to a hoisting tool for a horizontal steam generator heat transfer tube eddy current testing device. Background technique [0002] The steam generator heat transfer tube is the pressure boundary of the nuclear reactor coolant system, and its area accounts for more than 70% of the pressure boundary of the primary circuit. Since the heat transfer tubes are all thin-walled tubes of about 1 mm, and the operating conditions are also very harsh, the heat transfer tubes have always been the weakest link in the pressure boundary of the primary circuit. International nuclear power operation statistics show that more than 50% of steam generators in use are damaged to varying degrees in heat transfer tubes. All nuclear power plants at home and abroad implement pre-service and in-service inspections of st...

AI Technical Summary

Problems solved by technology

[0009] 3. The radius of the supporting part at the bottom of the device is relatively large, and there is a risk of collision with the scaffold when hoisting vertically

[0010] 4. The site environment of the nuclear power plant is harsh, the ground is uneven, the scaffolding support is unstable, and the center of gravity of the device is shifted seriously. When the overall device is hoisted, several workers are required to stabilize the bottom of the device before hoisting, which is inefficient

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