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一、概述我厂自1968年开始生产充油式潜水电机,电机采用漆包线绕组,为防止油溢出和水侵入,轴伸端设有机械密封。密封效果的好坏是影响电机维修周期和使用寿命的关键问题。由于旧式机械密封存在许多问题,使当时的电机质量很不稳定。 1.摩擦副材料采用9Cr18不锈钢对QSn 7-0.2锡磷青铜。由于硬度低,在含砂的井水中工作,工作面易为泥砂研损,从而失去密封性能。即使在试验室内短时运转,再次装配时也要重新研磨;
First, an overview of our factory began producing oil-filled submersible motor since 1968, the use of enameled wire winding motor, in order to prevent oil spill and water intrusion, the shaft extension has a mechanical seal. The quality of the sealing effect is the key issue affecting the motor maintenance cycle and service life. As the old mechanical seal there are many problems, so that the quality of the motor is very unstable. 1 friction pair material 9Cr18 stainless steel on QSn 7-0.2 tin phosphor bronze. Due to the low hardness, working in well-containing well water, the working face tends to be damaged by sand and thus the sealing performance is lost. Even in the laboratory short-term operation, re-assembly should be re-grinding;