There are mainly two excitation mechanisms in the vibration of the thermo-well at the main pipe of reactor coolant loop under cross flow: turbulence and vortex shedding.
反应堆冷却剂回路温度计套管在流体流动冲刷下的振动主要有两种激励机理：湍流和旋涡脱落。
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The principle, structure, common troubles, solving fault about thermo-switch are introduced and thermo-switch related circuit diagram as well as general inspecting flow for failures are analyzed.
This paper reviews the properties of thermo sensitive ferrite materials, the structure and working principle of thermal sensors of ferrite as well as their applications in various fields.