Heavy water reactor fuel element bending gauge calibration gauge and field calibration method

Abstract

The invention relates to the field of heavy-water reactor fuel element bent pipe gauge calibration, and specifically discloses a heavy-water reactor fuel element bent pipe gauge calibration gauge and a field calibration method. The calibration gauge is characterized in that the calibration gauge comprises a diameter calibration gauge and a bending calibration gauge; the diameter calibration gauge includes a square bar and rectangular solids arranged at the two ends of the square bar; and the bending calibration gauge includes a reference gauge, a spherical gauge, and a wedge block gauge fixedly arranged between the reference gauge and the spherical gauge. The upper limit of diameter, the lower limit of diameter and the bending of a heavy-water reactor fuel element bent pipe gauge can be calibrated using the diameter calibration gauge and the bending calibration gauge. The quality problem of product misjudgment due to misalignment of a heavy-water reactor fuel element bent pipe gauge is avoided effectively. The manufacturing quality of nuclear power fuel elements is controlled effectively.

Description

technical field [0001] The invention belongs to a geometric quantity on-site calibration method, which is applied to the field of heavy water reactor fuel element bending pipe gauge calibration, and in particular relates to an on-site calibration gauge that can be used for on-site real-time calibration of a specific object. Background technique [0002] The heavy water reactor fuel element bending gauge is mainly used as a special measuring instrument for testing the technical indicators of heavy water reactor fuel element bundles, specifically for detecting the bending degree and diameter of heavy water reactor fuel element bundles and judging whether they meet the requirements. At the same time, it is given Test results. The accuracy of special measuring tools is an important guarantee for the quality of nuclear fuel elements. [0003] The heavy water reactor fuel element curved pipe gauge has a special structure and strong professionalism, so there is no standard calibra...

AI Technical Summary

Problems solved by technology

[0004] When using the actual measurement method for calibration, there are the following defects: the actual measurement method requires repeated aiming and adjustments, and the positioning and card installation are also very complicated and cumbersome. It is difficult to measure during calibration, and sometimes external calibration is required, and the calibration time and circulation time are long; Due to the inherent uncertainty of the calibration system, the limit size of the gage is not retracted during calibration. When the gage is at the limit size, there is a risk that unqualified gages will be mistakenly accepted as qualified, and the calibration cycle is one year, so it is impossible to realize the accuracy of the gages in use. Real-time control, if the measuring tool is inaccurate, it may not be possible to trace the product, and the consequences will be serious

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