核电厂汽轮机低压转子叶片叶根超声检测技术

汽轮机低压转子是核电厂重要的转动设备，高速旋转的过程可能导致叶片叶根裂纹的产生，从而影响到低压转子的安全运行。介绍了针对汽轮机转子末三级叶片叶根采用的超声检测方法，通过对叶片叶根超声检测技术研究，掌握叶片叶根缺陷信号的判断方法。现场检测结果表明开发的检验技术应用效果良好，在保证核电厂汽轮机安全、可靠运行上起了重要的作用。

Research of Ultrasonic Inspection Technique of Steam Turbine on Blade Root in Nuclear Power Plant

The steam turbine is one of the most important rotation equipments in the Nuclear Power Plant, the blade of steam turbine is likely to engender crack in the root position that may eventually affect the safety work of low-pressure rotor. The article mainly introduces ultrasonic inspection methods concerning the third end type blade of steam turbine. It is helpful to master the method on how to judge the defects according to the inspection technique of blade root under investigation. The inspection result indicated that present technique had good application effectiveness, and the development of the ultrasonic inspection technique of blade root had great significance in the area of assuring the safety and reliability running condition of steam turbine.