新型同步电机为高效潜水泵提供动力

驱动器是永磁励磁同步电机。它们的单位尺寸输出明显超过了传统异步电动机。如果比较相同尺寸的电机，同步电机具有明显较高的输出和较低的热发展。由于效率高得多，与异步机器相比，可以实现巨大的节省和相对较短的回收期。电机由变频器操作。调整后的流量减少了启动频率，从而减少了绕组上的负载。由于这种优化的工作模式还将泵的启动频率保持在最低水平，从而减少了磨损，延长了泵的使用寿命。机械密封防止被处理的流体与电机空间中的流体混合，从而增加了电机的可用性。电机的推力轴承是水润滑的，并有自调节倾斜垫。无需维护，由于不锈钢和硬碳的材料组合，它很容易应对连续操作的应力和应变。 While the pump set is started up, the counter thrust bearing absorbs the axial thrust caused by the hydraulic system of the pump and prevents the impellers from coming into contact with the stage casings. This results in a high operating reliability and achieves the long service life customary for submersible borehole pumps. Smooth running is ensured by a dynamically balanced rotor. The pump sets are available in different material variants to match the application. For aggressive fluids, for example, pump sets of 8 inch and larger are available in duplex stainless steel. Both, the pumps and the motors, are certified for use with drinking water. Due to their high output, the new synchronous motors can be combined with much larger pumps of between 6 and 14 inch. Flow rates of up to 850 cubic metres per hour can thus be pumped much more efficiently with the UPA type series. A patented sand separator prevents any abrasive wear in the pump. The enclosed pump bearings are maintenance-free. A lift check valve with anti-blockage valve disc increases the pump set s operating reliability. Its integrated spring prevents waterhammer thanks to minimum valve closing times. This means the operation will also be gentle on the complete well system and its individual components.