超声波检测技术在锅炉受热面管氧化皮检测中的应用

摘要

锅炉受热面管氧化皮检测历来都是预防锅炉爆管的重要手段，主要介绍了超声波检测技术在某电厂锅炉末级过热器管内壁氧化皮检测中的实际应用，通过将超声波检测结果与内窥镜检查以及显微镜下的测量结果进行比较，进一步验证了该技术的准确性和可靠性。同时，将该技术与传统的射线拍片技术、不锈钢氧化皮堆积测量技术和割管取样测量等方法做了比较，指出超声波检测技术的优势及应用前景，对指导锅炉检修及保障锅炉安全经济运行具有一定的指导作用。%Measuring the thickness of oxide-layer in heat-absorbing tubes is always an important means to prevent heat-absorbing tubes from leaking.This paper mainly introduced the application of ultrasonic technique in measuring oxide-layer thickness in boiler finishing superheater of some power plant.By comparing the test results by microscope and endoscopy with the field data,it further validates the accuracy and reliability of this technology.At the same time,comparing this tech-nology with traditional RT technology and the measurement of oxide-layer in stainless steel tube bend was done and the measurement of oxide-layer by cutting tube was also done,and its advantages and prospect were pointed out.It has the cer-tain instruction function to guide the boiler inspection and guarantee the safe and economic operation of boilers.