Accurate detection and adjustment process for total travel movement path of telescoping sleeve of fueling and defueling machine

Abstract

The invention belongs to the technical field of a guide gap adjustment of a telescopic sleeve of a fueling and defueling machine of a pressurized water reactor nuclear power station, particularly relates to the accurate detection and adjustment process for total travel movement path of telescoping sleeve of fueling and defueling machine and aims to solve problems of inaccurate fuel assembly positioning and overlarge shaking in the fueling and defueling process. The detection and adjustment process is characterized by comprising steps of test device connection, test device adjustment, inner sleeve movement linearity test, outer sleeve verticality adjustment, inner and outer sleeve concentricity adjustment, adjustment on a first layer of guide wheels, adjustment on a second layer of guide wheels, adjustment on other five layers of guide wheels and inner sleeve movement linearity test. The detection and adjustment process is advantaged in that a problem of incapability of measuring innersleeve movement linearity of the fueling and defueling machine is solved, the inner sleeve guide gap adjustment process is provided, the inner sleeve guide wheels can be made to stay in the optimal work state, inner sleeve movement linearity is guaranteed, positioning accuracy and reliability of the fueling and defueling machine for the fuel assembly are improved, and fuel scratch damage risks aresubstantially reduced.

Description

technical field [0001] The invention belongs to the technical field of adjusting the guide gap of the telescopic sleeve of the loading and unloading machine of the pressurized water reactor nuclear power plant, and in particular relates to an accurate detection and adjustment process of the full stroke running track of the telescopic sleeve of the loading and unloading machine. Background technique [0002] The loading and unloading of the core needs to be completed at a depth of 12 meters, and the arrangement of the fuel assemblies in the core is very tight, and the theoretical gap is only about 1mm, so the loading and unloading machine is required to have high positioning accuracy. [0003] The part directly connected to the fuel assembly of the loading and unloading machine is the inner sleeve, which is guided by the seven-layer guide wheels on the outer sleeve. The positioning accuracy of the fuel assembly mainly depends on the accuracy of the inner sleeve, so the positi...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the defects of the prior art, to provide a process for accurately detecting the full-stroke motion trajectory of the inner sleeve, and a set of guide wheel clearance adjustment process, which are used to solve the problem of inaccurate positioning of fuel assemblies and excessive shaking during loading and unloading. big problem

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