输油泵电机振动故障诊断及处理  

Fault diagnosis and handling for vibration of motors in oil pumps

作　　者：董学刚[1] 谭东杰[1] 李柏松[1] 杨晓峥 王瑛[3] 房树松 

机构地区：[1]中国石油管道科技研究中心油气管道输送安全国家工程实验室 [2]中国石油管道分公司 [3]中石油山东输油有限公司

出　　处：《油气储运》2016年第2期189-191,207,共4页Oil & Gas Storage and Transportation

基　　金：中国石油天然气股份公司重大科技专项"油气管道关键设备国产化";2012E-2802-01

摘　　要：为了解决某输油泵电机振动偏大的问题,利用便携式振动分析仪采集电机运行参数,依据国家标准对电机运行状态进行评级。振动烈度评价结果表明:电机振动等级达到国家标准规定C级水平,不宜长时间连续运行。而频谱分析和降速分析结果显示:电机存在电气故障的可能性较大。通过对电机底座及支撑的螺栓处进行针对性检查,找出电机故障原因:6号测点位置存在软脚,电机外壳存在轻微变形,导致电机定子偏心使电机振动增大。实际检修结果证明了诊断结果的合理性。To eliminate significant vibration of motors in oil pumps, portable vibration analyzer is used to acquire operation parameters of motors and then working conditions of such motors are graded. Results of assessment on vibration intensities show that vibrations of motors are classified as Grade C in accordance with relevant national standards. Consequently, such motors should not operate in a prolonged continuous manner. Results of frequency-spectrum and velocity reduction analyses show that such motors are highly vulnerable to electric failures. Specific inspections are conducted for seating and anchor bolts of such motors, the revealing causes for failures show that, there are weak support at No.6 point and slight deformation on external shell of the motor, which led to eccentricity of the stator and subsequently severe vibration. Actual inspection results have verified the above diagnosis results. （4 Figures, 4 Tables, 11 References）

关 键 词：电机 振动检测 频谱分析 故障诊断 软脚 

分 类 号：TE974[石油与天然气工程—石油机械设备]