电站锅炉不锈钢管氧化皮检测技术

电站锅炉不锈钢管内壁由于蒸汽氧化容易产生氧化皮,剥落的氧化皮会堵塞管道,严重时甚至造成堵塞爆管。为了降低事故,减少损失,开展对电站锅炉不锈钢管氧化皮的检测就极为重要。基于磁性检测技术,提出了不锈钢管氧化皮检测方法,研制了检测仪器,并在现场进行了大量应用。实践表明,该仪器具有携带方便、检测快捷和灵敏度高等优点,可较好地满足电站锅炉不锈钢管氧化皮检测的要求。

The Oxide-Scale Detection Technique for Stainless Steel Pipe in Boiler of Power Plant

The stainless steel pipe is easily to create the oxide-scale because of oxidation from steam. Too much exfoliation oxide-scale will choke the pipe, and even can cause the pipe-bursting. To reduce accident and cut losses, it is important to detect the oxide-scale which is formed in stainless steel pipe in boiler of power plant. Based on the technology of magnetic detection, the method to detect the oxide~scale in stainless steel pipe was presented. A set of instrument for oxide-scale testing was developed. The instrument was already widely used in the boiler of power plant. It showed that the portable instrument was convenient to test, and had high sensitivity. It could meet the demand of oxide-scale detection for stainless steel pipe in boiler of power plant.