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  • 渣浆泵操作过程中电动机过热是什么原因?
  • 本站编辑:杭州仁祥泵业有限公司发布日期:2018-06-07 20:55 浏览次数:
BA§
1、是电源方面的原因
1. It's the source of power.
渣浆泵电压偏高或偏低,在特定负载下,若电压变动范围应在额定值的+10%至-5%之外会造成电动机过热;电源三相电压不对称,电源三相电电压相间不平衡度超过5%,会引绕组过热;缺相运行,经验表明农用电动机被烧毁85%以上是由于缺相运行造成的,应对电动机安装缺相保护装置。
The voltage of the slurry pump is high or low. Under a specific load, if the range of voltage variation should be added to the rated value of + 10% to 5%, the motor overheating will be caused, the three-phase voltage of the power supply is asymmetrical, the unbalanced degree of the three-phase electric voltage of the power supply exceeds 5%, the overheating of the winding will be induced, and the experience shows that the agricultural motor is burnt down by 8. More than 5% is due to the lack of phase operation, and should be equipped with a phase protection device for motor installation.
2、是电动机本身的原因
2. The reason for the motor itself
接法错误,将△形误接成Y形,使电动机的温度迅速升高;定子绕组有相间短路、匝间短路或局部接地,轻时电动机局部过热,严重时绝缘烧坏;鼠笼转子断条或存在缺陷,电动机运行1至2小时,铁芯温度迅速上升;通风系统发生故障,应检查风扇是否损坏,旋转方向是否正确,渣浆泵通风孔道是否堵塞;轴承磨损、转子偏心扫膛使定转子铁心相擦发出金属撞击声,铁芯温度迅速上升,严重时电动机冒烟,甚至线圈烧毁。
The fault is wrong, the delta shape is mistaken into Y shape, which makes the temperature of the motor rise rapidly; the stator windings have interphase short circuit, interturn short circuit or local grounding, when the motor is partially overheated, the insulation burns badly, the squirrel cage rotor is broken or the defects exist, the motor runs 1 to 2 hours, the iron core temperature rises rapidly; ventilation system hair is sent. It should check whether the fan is damaged, whether the rotating direction is correct or not, whether the ventilation channel of the slurry pump is blocked, the bearing wear and the eccentric shaft of the rotor can wipe out the metal impact sound, the temperature of the iron core rises rapidly, the motor smoke, and even the coil is burnt down.
3、是工作环境方面的原因
3. It is the cause of the working environment
电动机绕组受潮或灰尘、油污等附着在绕组上,导致绝缘降低。应测量电动机的绝缘电阻并进行清扫、干燥处理;环境温度过高。当环境温度超过35℃时,进风温度高,会使电动机的温度过高,应设法改善其工作环境。如搭棚遮阳等。 注意: 因电方面的原因发生故障,应请获得专业资格证书的电工维修,一知半解的人不可盲目维修,防止人身伤害事故的发生。
The winding of the motor is dampened or dust and oil are attached to the winding, resulting in the reduction of insulation. The insulation resistance of the motor should be measured and cleaned and dried. The ambient temperature is too high. When the ambient temperature exceeds 35 degrees, the high inlet air temperature will make the motor temperature too high, so we should try to improve its working environment. Such as shading the sun and so on. Attention: electrical maintenance due to electrical failure, should be requested to obtain professional qualification certificate electrician maintenance, unaware people can not blindly repair, prevent the occurrence of personal injury accidents.
4、是水泵方面的原因
4. It's the reason for the water pump
选用动力不配套,小马拉大车,电动机长时间过载运行,使电动机温度过高;启动过于频繁、定额为短时或断续工作制的电动机连续工作。应限制启动次数,正确选用热保护,按电动机上标定的定额使用。
The motor has been overloaded for a long time when the power is not matched, and the motor is overloaded for a long time. The starting frequency should be limited, heat protection should be selected correctly, and the quota should be calibrated on the motor.

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