A new method to detect the blade roots of steam turbines based on ultrasonic transformed wave

ZHU Lichun; ZHANG Jiong; MA Yichao; DING Qi

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A new method to detect the blade roots of steam turbines based on ultrasonic transformed wave

Thermal Power Generation Issue 3, (2017)

更新时间：2025-09-28

- A new method to detect the blade roots of steam turbines based on ultrasonic transformed wave
- 作者机构：
  
  1. 西安热工研究院有限公司,陕西,西安,710054
  2. 西安工业大学,陕西,西安,710021
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG115.285
- Published Online：27 March 2017，
  
  Published：2017
- 稿件说明：
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ZHU Lichun, ZHANG Jiong, MA Yichao, et al. A new method to detect the blade roots of steam turbines based on ultrasonic transformed wave[J]. Thermal Power Generation, 2017, (3).
DOI：

ZHU Lichun, ZHANG Jiong, MA Yichao, et al. A new method to detect the blade roots of steam turbines based on ultrasonic transformed wave[J]. Thermal Power Generation, 2017, (3). DOI：

摘要

对汽轮机叶片叶根进行有效可靠检测，可为机组的安全经济运行提供重要的技术支持。本文提出了一种利用专用探头发射的横波，在叶根内部传播过程中发生波型转换而产生变型波，从而对叶根易产生裂纹的部位进行检测的新方法。该方法克服了目前在役汽轮机叶片叶根常规超声检验方法的技术局限性和现场适用条件的限制，达到了叶根 0.3 mm深模拟裂纹的检测精度，其准确性、灵敏度及适用性获得显著提高，尤其在高压转子叶片 T型叶根检测方面具有较好的推广应用前景。

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