核电厂枞树型叶片叶根超声波检测技术

Ultrasonic Testing for the Root of Fir Type Blade of Nuclear Power Plant

汽轮机低压转子是核电厂重要的转动设备,其叶片叶根在高速旋转的过程可能产生裂纹,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级、次末级枞树型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的研究,掌握了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和可靠运行上起到了重要的作用。

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 fir 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 that we researched. The inspection result indicated that the technique researched has good application effectiveness, and the development of the ultrasonic inspection technique of blade root has great significance in the area of assuring the safety and reliability running condition of steam turbine.