REACTOR OUTPUT MEASURING DEVICE AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To provide a reactor output measuring device and its manufacturing method having a stable heat transfer characteristic and improved reliability on reactor output measurement by stably connecting and fixing a rod-like heating element and a temperature sensor in a core member. SOLUTION: This reactor output measuring device 10 is arranged at the core section of a reactor, and it has a fixedγ-thermometer 14 and measures the reactor output. Theγ-thermometer 14 is provided with a rod-like heating element and a temperature sensor in a rod-like core member 21. The core member 21 is covered with a metal cover tube 20, and circular (sleeve-like) void sections 22 are formed at multiple positions at intervals in the axial direction between the cover tube 20 and the core member 21 to form a sensor assembly. Theγ-thermometer 14 detects the temperature distribution of a core member portion (sensor section 17) facing the circular void sections 22 with a temperature sensor 25 to measure the reactor output. Theγ-thermometer 14 is integrally connected by brazing between the rod-like heating element and temperature sensor and between the temperature sensor and core member 21 to resolve defective connection and improve the heat transfer characteristic.