Stator fixing structure and permanent magnet motor

By designing an adaptive repair mechanism in the submersible motor, using resistance value and water pressure to detect leaks, and automatically repairing the inside of the motor, the problem of mechanical seal leakage requiring shutdown for maintenance is solved, achieving efficient self-repair and low-cost maintenance.

CN120638697AActive Publication Date: 2025-09-12NANJING YOUFU PUMP IND CO LTD
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Patent Information

Application Number
CN202511135594.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-14
Publication Date
2025-09-12
Estimated Expiration
2045-08-14

AI Technical Summary

Technical Problem

When the mechanical seal of existing submersible motors fails, the leakage cannot be repaired by itself and the motor needs to be shut down for maintenance, which affects work efficiency and increases maintenance costs.

Method used

A stator fixing structure is designed, which includes an adaptive repair mechanism. It uses the resistance value of the insulating liquid and the external water pressure to detect leaks. The internal structure of the motor is automatically repaired through pressure regulation and self-draining mechanism to prevent contamination and reduce maintenance requirements.

Benefits of technology

It realizes automatic repair in case of leakage, reduces the frequency of shutdown and maintenance, reduces maintenance costs, and ensures the normal operation of the motor.

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Abstract

The invention discloses a stator fixing structure and a permanent magnet motor, and relates to the technical field of submersible motors, the stator fixing structure comprises a fixing ring and a limiting ring which are distributed at the two ends of a motor stator, the periphery is filled with insulating liquid, one side of the limiting ring is provided with a self-adaptive repairing mechanism, and the insulating liquid forms a circulation part based on the motor stator and a motor shell. The insulating liquid is based on a self-adaptive repair mechanism and a motor shell detection part, the self-adaptive repair mechanism collects the resistance value of the detection part, and the self-adaptive repair mechanism determines the pressure value of the circulation part based on the resistance value of the detection part and the external water pressure of the motor shell; compared with the prior art, the permanent magnet motor does not need to be shut down and maintained, and the circulating part does not have water leakage, so that when the insulating liquid is replaced, only the insulating liquid in the detection part needs to be replaced, equipment in the whole motor shell does not need to be cleaned, and the maintenance cost is greatly reduced.
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