STUDY ON AND APPLICATION OF THE ULTRASONIC DETECTING TECHNOLOGY FOR HYDROGEN DAMAGE ON WATER-WALL TUBES IN BOILERS OF THERMAL POWER PLANTS

MA Jian-min Xi'an Thermal Power Research Institute Co Ltd

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STUDY ON AND APPLICATION OF THE ULTRASONIC DETECTING TECHNOLOGY FOR HYDROGEN DAMAGE ON WATER-WALL TUBES IN BOILERS OF THERMAL POWER PLANTS

Thermal Power Generation Vol. 38, Issue 4, Pages: 84-86(2009)

更新时间：2025-09-28

- STUDY ON AND APPLICATION OF THE ULTRASONIC DETECTING TECHNOLOGY FOR HYDROGEN DAMAGE ON WATER-WALL TUBES IN BOILERS OF THERMAL POWER PLANTS
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.2
- Published：2009
- 稿件说明：
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MA Jian-min Xi'an Thermal Power Research Institute Co Ltd. STUDY ON AND APPLICATION OF THE ULTRASONIC DETECTING TECHNOLOGY FOR HYDROGEN DAMAGE ON WATER-WALL TUBES IN BOILERS OF THERMAL POWER PLANTS[J]. Thermal Power Generation, 2009, 38(4): 84-86.
DOI：

MA Jian-min Xi'an Thermal Power Research Institute Co Ltd. STUDY ON AND APPLICATION OF THE ULTRASONIC DETECTING TECHNOLOGY FOR HYDROGEN DAMAGE ON WATER-WALL TUBES IN BOILERS OF THERMAL POWER PLANTS[J]. Thermal Power Generation, 2009, 38(4): 84-86. DOI：

摘要

介绍了火力发电厂水冷壁管氢损伤的机理

以及水冷壁管氢损伤超声检测系统各组成部分的选择原则。背散射法使用的探头频率和灵敏度较高

可判断氢损伤的严重程度及测量出氢损伤的厚度;超声波频率一般选择10～15MHz

选择d6～10mm的探头晶片;选择频率可达到20MHz的探伤仪。通过现场实例证实

水冷壁氢损伤的超声检测方法准确可靠

检验灵敏度及分辨率高

操作方便。

Abstract

The mechanism of hydrogen damage on water-wall tubes in thermal power plants

as well as the selection of components used in ultrasonic detecting system for hydrogen damage on water-wall tubes have been presented.The frequency and sensitivity of probe used in back scattering method are comparatively higher

the severity of hydrogen damage can be determined

and the thickness of hydrogen damage can be measured.The ultrasonic frequency is commonly selected as 10~15 MHz

and the probe wafer being selected as d6~10 mm

the frequency range of detector being selected as 20 MHz.Through practical examples in the field

it has been verified that the ultrasonic detecting method used for hydrogen damage on the water-wall is accurate and reliable

having high detecting sensitivity and resolving capability

and being convenient to operate.

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