摘要
增安型防爆电机定子直线出槽口与通风槽口处电场集中,局部场强过高,将发生局部电离,产生电晕现象,影响绝缘效果,亟需优化防爆电机防电晕绝缘结构。分析了增安型防爆电机内电场,以等电位绝缘结构优化方式,开展设计试验,明确导体角部电场与内屏蔽层电场影响。并通过实践应用,验证其有效性,电机稳定运行2 h后,定子绕组温度最高是69℃,表面机壳温度44.4℃,前后轴承温度均处于允许范围,能够保证电机高效、稳定运行。
The electric field is concentrated at the straight slot outlet and ventilation slot outlet of the stator of the increased-safety explosion-proof motor,so the local field strength of it is too high,which will occur local ionization,result in corona phenomenon and then affect the insulation effect.It is urgent to optimize the anti-corona insulation structure of the explosion-proof motor.This paper analyzes the electric field in the increased safety explosion-proof motor,adopts the way of optimizing the equipotential insulation structure to carry out design and experiment,and clarifies the influences of the electric fields at conductor corner and inner shielding layer.Through practical application,its effectiveness was verified.After the motor operated stably for 2 hours,the maximum temperature of the stator windings was 69℃,the surface temperature of the casing was 44.4℃and the temperatures of both the front and rear bearings were within the allowable range,which could ensure the effective and stable operation of the motor.
作者
戚云飞
Qi Yunfei(Jiamusi Explosion-Proof Electric Machine Institute Co.,Ltd.,Jiamusi 154005,China)
出处
《防爆电机》
2025年第4期69-71,86,共4页
Explosion-proof Electric Machine
关键词
增安型
防爆电机
防电晕
绝缘结构
Increased-safety type
explosion-proof motor
anti-corona
insulation structure
