16 channel temperature measurement system for nodular cast iron sector test block of spent nuclear fuel vessel

In order to verify the accuracy of the simulation results and prove that the simulation software can be used to optimize the casting process of 100 ton ductile iron spent fuel container, the 45 ° sector test block is designed (as shown in the figure). The outer side of the 45 ° sector test block is 300 mm metal mold, and the inner side is 250 mm direct external chill. The upper, lower, left and right sides of the 45 ° sector test block are insulated by 200 mm thick fire-resistant fiberboard to simulate the solidification of ductile iron nuclear spent fuel container under metal mold process. The inner surface of metal mold and chill is coated with 1 mm thick heat-resistant coating, and the experimental research is carried out; the 45 ° fan-shaped test block is dissected, and the microstructure and properties are analyzed. It is proved that under the existing domestic conditions, the ductile iron castings with microstructure and properties meeting the requirements of foreign ductile iron nuclear spent fuel container can be produced.

The developed 16 channel casting cooling temperature measurement system can collect and process the data of 16 thermocouple sensors at the same time, and the measuring temperature range is – 20 ° c-1370 ° C. The 16 channel temperature measurement system is composed of data acquisition hardware and data processing software.

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