Abstract: According to the application status of the thermowell in Process industry and the new requirement in ASME PTC 19.3 TW-2016/2010, This Paper shows the necessity of performance calculation of thermowell and the considerations on the performance calculation for the conventional thermowell. This paper also introduce the attentions which shall be paid for the performance calculation and the application of unconventional thermowell.

摘要： 本文针对温度仪表保护套管的过程工业应用现状和新版ASME PTC 19.3 TW-2016/2010的要求，介绍了温度仪表保护套管的性能计算的必要性及常规温度仪表保护套管性能计算中的注意事项，并介绍了非常规温度仪表保护套管性能计算及应用中容易忽视的问题。

关键词: 温度仪表保护套管 性能计算 共振 断裂, Thermowell Performance calculation Resonance Fracture