Thermal resistance degradation detection method based on cross calibration technology

Abstract

A thermal resistor degradation detection method based on a cross calibration technology relates to the field of thermal resistor degradation detection, and comprises the following steps: step S01, a calculation platform receives first temperature data of all thermal resistors acquired by a data acquisition system, and calls a precision criterion [delta]H and a linearity degradation criterion [delta]T stored in the calculation platform; S02, the calculation platform calculates and obtains second temperature data based on the first temperature data of all the thermal resistors; S03, the calculation platform calls third temperature data stored in the calculation platform, and fourth temperature data is obtained through a cross calibration method according to the second temperature data; S04, the real average temperature of the to-be-detected pipeline under each temperature platform is obtained; S05, the thermal resistance with degraded precision is detected. and S06, the thermal resistance of which the linearity is degraded is detected. The method has the advantages that the degradation detection is accurate by using the cross calibration technology, the detection can be carried out without dismounting the thermal resistor, and the pollution and the influence caused by the dismounting work are reduced.

Description

technical field [0001] The invention relates to the field of thermal resistance degradation detection, in particular to a thermal resistance degradation detection method based on cross-calibration technology. Background technique [0002] The control system and safety system of the nuclear power plant mainly rely on the thermal resistance arranged in the main circuit to measure the temperature of the reactor coolant. These temperatures are used for reactor control and protection. The performance of these thermal resistances directly affects the safe and stable operation of nuclear power plants. The measurement accuracy of these thermal resistances is particularly important for nuclear power plants. With the operation of nuclear power plants, thermal resistances are subjected to high temperature and irradiation for a long time, which brings challenges to their measurement accuracy and reliability, so it is particularly necessary to test the performance of these thermal resi...

AI Technical Summary

Problems solved by technology

[0005] The invention overcomes the problem in the prior art that dismantling the thermal resistance for detection can easily pollute the verification equipment, and the dismantling and installation are also easy to introduce installation problems and cause inaccurate measurement. A method for thermal resistance degradation detection based on cross-calibration technology that can reduce the impact of pollution and disassembly work

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