发电机绝缘材料过热裂解挥发有机物成分分析  

Composition analysis of volatile organic compounds from overheating cracking of generator insulation materials

作　　者：祁伟健 张秀丽[1] 贾明静 陆新原 张胜寒[2] QI Wei-jian;ZHANG Xiu-li;JIA Ming-jing;LU Xin-yuan;ZHANG Sheng-han(North China Electric Power Science Research Institute,Beijing 100045;Department of Environmental Science and Engineering,North China Electric Power University,Baoding 071003,China;Beijing HuakeXingsheng Electric Power Engineering Technology,Beijing 102201,China)

机构地区：[1]华北电力科学研究院有限责任公司,北京100045 [2]华北电力大学环境科学与工程系,河北保定071003 [3]北京华科兴盛电力工程技术有限公司,北京102201

出　　处：《热固性树脂》2021年第4期52-60,共9页Thermosetting Resin

摘　　要：为了研究发电机绝缘材料过热裂解挥发物的主要化学成分,采用可程控烧结炉取样装置加热绝缘材料,并由聚合树脂吸附热解挥发的气态有机物,对样品进行洗脱、氮吹浓缩等处理后,运用气质联用仪对其主要成分进行检测,将检测结果与标准谱库对比分析,得出产物库。分别鉴定了端部防晕带、定子线圈少胶绝缘、定子排间绝缘和定子绝缘表面覆盖漆4种绝缘材料的化学成分,由维恩图对不同材料热解产物所独有、共有物质进行了分类,给出了各绝缘材料不同温度下的各种热解产物。该实验方法和分析流程为判断发电机过热故障部位及过热程度提供了新的思路和参考依据。In order to study the main chemical components of the overheating cracking volatiles of generator insulation materials,a programmable sintering furnace sampling device was used to heat the insulation materials,and the pyrolyzed and volatilized gaseous organics were adsorbed by the polymer resin,and the samples were eluted and concentrated by nitrogen blowing.Its main components were detected by the gas-mass spectrometer and the test results were compared with the standard mass spectrometer library to obtain the product library.The chemical compositions of four insulating materials,i.e.,the end anticorona tape,stator coil little-glue insulation,stator row insulation and stator insulation surface coating were identified respectively.The Venn diagram was used to analyze the unique and common substances of the pyrolysis products of different materials.The various pyrolysis products at different temperatures of each insulating material were given.The experimental method and analysis process could provide new ideas and reference basis for judging the generator overheating fault location and overheating degree.

关 键 词：发电机 绝缘过热 挥发物 故障部位检测 过热程度 气质联用分析 

分 类 号：TQ320.772[化学工程—合成树脂塑料工业] TM215.1[一般工业技术—材料科学与工程]