Automatic calibration method and device for boron concentration measurement system

Abstract

The invention discloses an automatic calibration method and device for a boron concentration measurement system, and the method comprises the steps: obtaining a plateau curve and a threshold curve, determining the working high voltage of a neutron detector through the plateau curve, and determining the working discrimination threshold value of a pulse amplifier through the threshold curve; after the working high voltage and the working discrimination threshold are determined, starting an isothermal calibration program, determining whether the neutron counting rate of an isothermal calibration test point is stable or not through a statistical fluctuation algorithm, and if the neutron counting rate is stable, representing that the boron solution is sufficient and uniform; drawing a calibration curve according to the stable neutron counting rate and the chemical titration boron concentration value, and calculating a calibration coefficient; and using the working high voltage and the working discrimination threshold as system control parameters, and automatically calibrating the boron concentration measurement system based on the system control parameters and the calibration coefficient, so that rapid and simple automatic calibration of the system is realized, the labor cost is reduced, and the efficiency of regular calibration is improved.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to an automatic calibration method and device for a boron concentration measurement system. Background technique [0002] The neutron absorption method boron concentration measurement system refers to the special equipment developed for on-line measurement of boron concentration in nuclear power plant reactors and primary loop systems. Call the police. In order to ensure measurement accuracy, the equipment needs to be calibrated when it is used for the first time and every time the nuclear power plant is overhauled. The specific calibration process includes the acquisition of control parameters and calibration coefficients. [0003] At present, the calibration process of the boron concentration measurement system in nuclear power plants has problems such as time-consuming, labor-intensive, and high professional requirements. Among them, 1. The specific performance of the pro...

AI Technical Summary

Problems solved by technology

Although this method realizes the automatic calibration of the coefficients, it cannot complete the automatic acquisition of the control parameters, and cannot completely realize the automatic calibration of the boron concentration measurement system, and in the automatic calibration method, in order to meet the stability of the working state under all circumstances as much as possible, its setting The stabilization time threshold is longer than traditional manual calibration, resulting in lower calibration efficiency

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