Ssteam power plant high pressure heater in service vortex flaw detection

Power plant 300MW high pressure heater in service far field vortex flaw detection

Power plant 600MW high pressure heater in service far field vortex flaw detection

Steam power plant high pressure heater mostly adopt carbon steel or stainless steel tube as heat exchanger. high pressure heater damage mainly distribut in inlet of the lower side hydrophobic section、hydrophobic outlet pipe interface and upper part superheated steam cooling section.

High prossure heater carbon steel tube is belong to ferro magnetic material,inservice vortex flaw detection only can adopt far field vortex method .far field probe one by one stretch into tube to detect by worker or probe propeller ,detecting workers analyze all signal and save and make report.

Flow detection uses offline or online to detect surface of metal bar,tube,seamless tube,welded pipe and belt materials,near surface 、inner surface and inner flaw usually adopt outside wear probe,the detected material cross probe and detect;high frequency welded tube online vortex flaw detection can also adopt  saddle magnetic saturation、saddle probe to detect quality of welding line,including  lack of fusion、slag inclusion、sand hole、air hole、and other flaws.

When material area is big or shape is complex with high requirement,then it needs to adopt spot probe,manual or equipped with automatic scanning equipment to realize one by one scanning detection。

Different detecting ways need to adopt different auxiliary equipment,or suitable for situation,fully take advantage of current equipment of production scene ,design special auxiliary instrument to realize。for liquidity scene,usually adopt simple convenient auxiliary instrument to realize,manual way is available。