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

ZHU Lichun; ZHANG Jiong; MA Yichao; DING Qi

English

您当前的位置：

首页 >

文章列表页 >

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

Thermal Power Generation Vol. 46, Issue 4, Pages: 57-62(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
  2. 西安工业大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB559;TK263.3
- Published：2017
- 稿件说明：
移动端阅览
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, 46(4): 57-62.
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, 46(4): 57-62. 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。

Abstract

Reliable nondestructive testing applied on the blade roots of steam turbines plays an important role in the safe and economical operation of the turbine generator unit. In this paper

a new method has been proposed to detect the cracks of blade roots based on the transformed wave

generated in the propagation of the shear wave by dedicated probe. The artificial crack with 0.3 mm deep can be detected through the new method

which greatly improved accuracy

sensitivity and on-site applicability compared with the current nondestructive testing methods

and largely overcome their technical limitations and on-site application weaknesses. It has a great potential for the application of the transformed wave technology to the nondestructive testing of blade roots

especially for T-type blade roots of the high-pressure rotor.

关键词

Keywords

references

Views

128

下载量

CSCD

Alert me when the article has been cited

提交

Publicity Resources

Difficulties and countermeasures of quality control in wind turbine blades

Phased array ultrasonic detection of cracks in wind turbines pitch bearings by CIVA simulation

Magnetic memory detection in welding joint of 20 steel plate

Related Author

ZHAO Yong

WANG Bingjia

WANG Jiebin

ZHAO Lun

CAI Hui

SUN Pujie

QIN Chengpeng

WANG Zhiqiang

Related Institution

Guoneng Boiler and Pressure Vessel Inspection Co., Ltd

School of Mechanical Engineering, Nantong University

AI问答

⁰