摘要
灯泡贯流泵机组电机位于几乎密封的灯泡体内,运行环境差,冷却要求高。气隙不均会引起电机温升不均,造成电机局部温度过高。分析造成气隙不均的因素,计算气隙不均时电机温度分布与空气流速分布,分析气隙不均对电机温升的影响。通过实例计算,给出所需通风量与气隙不均匀度的关系。研究结果表明,电机气隙不均时,气隙小的部位发热量大,通风量小,因而温升大幅上升。为保证电机不过热,则所需通风量增加。与气隙均匀时相比,气隙不均匀度为5%,10%,15%和20%时所需通风量分别增加8.1%,15.1%,24.2%和33.7%。成果对电机气隙不均匀度的控制和通风设计具有重要意义。
The motor of bulb tubular pump unit, embedded in the enclosed bulb, has bad operation environment and requires better cooling facilities. Non-uniform air-gap leads the motor＇s temperature ufievefi, 6ausing local temperature over high. The influence factors of non-uniform air-gap were analyzed. The motor＇s temperature and ventilation velocity distrfbutions with non-uniform air-gap were calculated. And the motor＇s temperature rise was analyzed. The relation between required ventilation quantity and air-gap＇s non-uniformity were presented by calculating several examples. The results show that, when the motor has non-uniform air-gap, there is more heat value arid less ventilation quantity with small air-gap. Therefore, the motor＇s temperature increases in large extent. In order to keep the temperature normal, more ventilation quantity is required. Compared with uniform air-gap, ventilatiOn quantity increases by 8.1%, 15.1%, 24.2% and 33.7%, when the non-uniformity is respectiveiy reached 5%, 10%, 15% and 20%. The conclusions can be used to control air-gap＇s nonuniformity and ventilation system design.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2011年第8期98-103,共6页
Proceedings of the CSEE
基金
全国百篇优秀博士学位论文作者专项资金资助项目(2007B41)
"十一五"国家科技支撑计划重大项目(2006BAB04A03)
江苏省六大人才高峰专项基金资助项目(09-4-25)~~
关键词
灯泡贯流泵机组
电机
气隙不均
温升
通风
bulb tubular pump unit
motor
non-uniformair-gap
temperature rise
ventilation
