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我矿措施井曾二次被淹,涌水量近600(吨/时)。我们采用8组10JQ140型深井潜水泵,与10JQS—2型潜水电机配套使用,在井筒内排水。深井潜水泵正常使用工况点的扬程要求为名义扬程的75％,但在开始排水时,水位较高,扬程很小,泵轴严重上窜。泵轴下端的2Cr13钢联轴器和锡铅青铜的下轴瓦紧贴,将下轴瓦端面磨薄,使联轴器和下轴瓦的螺钉咬死,潜水电机因过载而烧毁。或因泵轴继续上窜,造成泵联轴器和潜水电机联轴器脱节,使电机空转,迫使排水工作中断。此外,潜水电机上有4个锡铅青铜做的轴瓦,
Mine mine once flooded wells twice, influx of nearly 600 (t / h). We use 8 sets of 10JQ140 deep submersible pumps, and 10JQS-2 submersible motor supporting the use of drainage in the wellbore. Deep well submersible pump operating conditions point of normal lift requirements for the nominal lift of 75%, but at the beginning of drainage, the water level is higher, the lift is small, serious shaft channeling. 2Cr13 steel shaft coupling at the lower end of the pump shaft and the lower bearing bush of the tin-lead bronze are close to each other, the end face of the lower bearing bush is thinned, the screws of the coupling and the lower bearing bush are killed, and the submersible motor is burned due to overload. Or because the pump shaft to continue channeling, resulting in pump coupling and submersible motor coupling out of line, the motor idling, forcing the drainage work interruption. In addition, the submersible motor has four tin-lead bronze bearings,