Medium voltage to the pump bearing temperature classification - bearing knowledge

As temperatures rise, for 9 fa combined cycle generating unit, the equipment of the heating problem becomes very prominent. So, must strengthen the bearing temperature of each equipment, motor coil parameters such as temperature monitoring, to ensure the unit under the condition of high temperature safe and economic operation. According to this thought, we especially during unit operation to strengthen monitoring the parameters such as temperature of all kinds of equipment. On April 12, the personnel on duty notice # 2 machine A free period of medium voltage to the pump pump bearing temperature on the high side, 74℃） , at the same time, strengthen the on-site inspection equipment. The afternoon and found the # 2 machine A medium voltage to the pump pump free period of abnormal bearing temperature rise, the highest to 97. 1℃（ Jump pump value 100 ℃) 。 Immediately contact processing, at the same time enable B medium voltage to the pump, stop using A medium voltage to the pump operation. In situ measured medium voltage to the pump bearing shell temperature of 90 ℃, at the same time bearing oil level is about 70%. Because thought is proper, can avoid a medium pressure to pump caused by high bearing temperature jump pump, and avoid the abnormal for medium voltage to the pump to the safe operation of the unit damage.