Basic structure of submersible motors

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This post was last edited by Keep running on 2016-12-2 at 18:44. Submersible pumps are important devices for urban sewage discharge, sewage treatment, drainage in road and bridge construction, as well as for irrigation and flood control in water conservancy projects. With the improvement of environmental protection regulations and the growing awareness of environmental protection among people, there is an increasing demand for submersible pumps used in sewage treatment. Submersible motors are used in various types of submersible pumps; they form an integral part of these pumps and operate continuously in sewage with different water qualities under harsh working conditions. Therefore, developing submersible motors with excellent performance and reliability holds great market potential. Structural characteristics of submersible motors: Since submersible motors operate underwater under complex conditions, their structural design must ensure strict sealing to prevent water ingress, while also allowing for monitoring of the motor’s operation at all times. This is what distinguishes submersible motors from three-phase asynchronous motors. In addition to the essential stator and rotor, the main difference between submersible motors and conventional motors lies in their complex sealing structure and online monitoring and protection systems. Submersible motors are generally fully sealed dry-type asynchronous motors. The casing encloses the motor; a static seal is provided at the cable outlet on the upper cover of the motor, while a dynamic seal is available at the cable outlet on the lower cover. There are monitoring, alarm, and protection systems in place to detect seal leaks as well as rising temperatures of the windings and bearings. The protection rating of this submersible motor is IP68, and its insulation class is F. The overall structure of the motor is that of an elongated, vertical unit. Above is an introduction to the basic structure of submersible motors. Through the descriptions in this article, we have gained an understanding of their basic structure. If you have any inquiries regarding submersible motors, please consult us online.