Multi-dimensional scanning temperature measuring device of sodium-cooled fast reactor assembly test piece and method

Abstract

The invention relates to a multi-dimensional scanning temperature measuring device of a sodium-cooled fast reactor assembly test piece and a method. The device comprises an adjustment base, a portal frame, a Z-axis assembly, a Z-axis supporting seat, a Y-axis assembly, an X-axis assembly, a temperature measuring probe rotation mechanism and a micro temperature measuring probe; the portal frame is connected with the adjustment base through a high-strength bolt; the Z-axis assembly mainly comprises a fixed guide rail and a telescopic rod and carries the linear motion of a non-contact temperature measuring probe along a Z axis; the Z-axis supporting seat rigidly supports the Z axis; the Y-axis assembly realizes the linear motion of the Z-axis assembly and the Z-axis supporting seat along a Y axis; the X-axis assembly realizes the linear motion of the Z-axis assembly, the Z-axis supporting seat and the Y-axis assembly along the sliding guide rails of the X-axis assembly; the temperature measuring probe rotation mechanism realizes the rotation of the micro temperature measuring probe in an XY plane according to a specified angle; and the micro temperature measuring probe receives the infrared radiation of the inner wall surface of a hexagonal casing of the fast reactor assembly test piece and feeds backs the temperature signals of the inner wall surface to a computer processing unit. The invention also discloses a temperature measuring method of the device. The device can satisfy measurement requirements of an assembly test piece temperature field in an ex-reactor experiment process.

Description

technical field [0001] The invention belongs to the field of experimental devices, and in particular relates to a multi-dimensional scanning temperature measuring device and method for temperature measurement of a sodium-cooled fast reactor component test piece. Background technique [0002] The components in the SFR play a very important role in the operation of the SFR. During the operation of the sodium-cooled fast reactor, the fission reaction in the active area of ​​the fuel assembly will release a large amount of heat, and the sodium around the fuel assembly as a coolant will take out the heat released by the fission reaction in the fuel assembly by flowing. outside the core. Due to the uneven distribution of heat release power of fast reactor components, the temperature difference in different component regions inside the core is very large. For a certain component, the temperature will also have a large difference at different component heights and different compon...

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Problems solved by technology

It can be found that although this method realizes three-dimensional motion temperature measurement, since the object to be tested must be placed on a three-dimensional platform for measurement, and the probe of the infrared camera cannot be rotated circumferentially, the scanning temperature measurement published in this patent The detection method cannot be applied to the temperature measurement of the component test piece in the ex-core experiment

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