罐底声发射在线检测及其可靠性验证  

Acoustic Emission In-service Inspection for Tank Bottom and Its Reliability Testing

作　　者：林明春[1] 辛爱华 高金杰 聂晶[4] 康叶伟[1] 周世彬 王维斌[1] 熊敏[1] 董青[6] 

机构地区：[1]中国石油管道科技研究中心 [2]中国石油管道局设备管理中心 [3]中国石油管道局第一工程分公司 [4]西南石油大学 [5]西气东输奥桂管理处 [6]中国石油管道科学研究院

出　　处：《油气储运》2010年第10期776-779,共4页Oil & Gas Storage and Transportation

摘　　要：基于储罐底板声发射在线检测和定位原理,提出了检测技术方案和实施步骤,将参数分析方法和波形分析方法相结合,对发射检测信号进行处理分析,经滤波、聚类,再基于参数相关图分析去除干扰数据,根据各通道有效数据在单位时间内的事件数,以及事件的平均能量进行分级评价,最终获得储罐底板的腐蚀严重程度,可据此给出不同的维护建议。对某公司5000m3原油储罐底板,分别采用声发射在线检测技术和常规开罐漏磁检测技术实施腐蚀情况的检测,2种方法对腐蚀部位的定位具有一致性,验证了声发射检测技术应用于储罐底板在线检测的可靠性。Based on the locating theory of acoustic emission in-service inspection for tank bottom,technical plan and implementing steps of the inspection are presented,With parameter and wave analyzing method combined,acoustic emission signal acquired is processed,Through filtering,clustering and analyzing based on parameter correlative diagram,the noise signal is filtered,Based on available events from all channels per unit time and average energy of the events,grade evaluation is carried out to obtain the corrosion information of tank bottom,which is a fundamental for presented maintenance advice,In order to evaluate performance of the method,an in-service field inspection on 5 000 m3 oil products tank is made,then a traditional MFL technology is followed up,Comparative result shows that there is consistency in corrosion localizing accuracy in the two inspection methods,It demonstrates the feasibility for in-service inspection technology used in tank bottom.

关 键 词：储罐 底板 声发射 在线检测 信号处理 滤波 聚类 参数相关图 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]