Calibration method of thermal resistance
A calibration method and technology of thermal resistance, which can be used in heat measurement, thermometer testing/calibration, instruments, etc., can solve problems such as high radiation dose and thermal resistance damage, and achieve accurate and reliable parameter measurement
Active Publication Date: 2022-05-24
SANMEN NUCLEAR POWER CO LTD
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Problems solved by technology
[0004] However, there are difficulties in calibrating these thermal resistors at present, because after the thermal resistors are installed on the site of the primary circuit, the disassembly process will cause the thermal resistors to be damaged, and the thermal resistors are installed on the main pipe section, and it is possible to calibrate the thermal resistors by ordinary methods. There is a high radiation dose
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[0036] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0037] figure 1 A schematic flowchart of a method for verifying a thermal resistance provided in an embodiment of the present invention, such as figure 1 As shown, an embodiment of the present invention provides a method for verifying a thermal resistance, including:
[0038] In step S101, a temperature value in a working range co...
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An embodiment of the present invention provides a method for calibrating a thermal resistance, the method comprising: calculating the selected value in the temperature value of the working range by obtaining the temperature value of the working range corresponding to the thermal resistance; calculating the linearity of the thermal resistance through the selected value and deviation value, when the linearity and deviation value meet the corresponding preset requirements, the result of the thermal resistance is qualified; when the linearity and deviation value do not meet the corresponding preset requirements, obtain the Gain and Offset coefficients of the thermal resistance, The coefficient correction method is set to correct the Gain and Offset coefficients. Adopting the method can provide a method capable of detecting the performance of the thermal resistance, so that the performance of the thermal resistance can be guaranteed, thereby ensuring accurate and reliable parameter measurement of the nuclear power plant.
Description
technical field [0001] The invention relates to the technical field of thermal resistance, in particular to a calibration method of thermal resistance. Background technique [0002] The reactor coolant system of the nuclear power plant is arranged with a large number of thermal resistances (RTDs) in the hot pipe section and the cold pipe section, which are used to measure the temperature of the cold pipe section, the temperature of the hot pipe section and the average temperature of the primary circuit. The power plant control and protection system collects these temperature signals and participates in reactor power calculation and reactor power regulation. [0003] During the operation of the nuclear power plant, in order to ensure the accuracy of the temperature measurement of the primary circuit, it is necessary to calibrate such instruments at predetermined intervals during the life of the power plant to ensure the accuracy of the temperature measurement of the primary c...
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IPC IPC(8): G01K15/00
CPCG01K15/005
Inventor 居法立周二孟马仕洪
Owner SANMEN NUCLEAR POWER CO LTD