An electric slip ring with internal self-cleaning

By incorporating fluid channels and a cleaning system within the electrical slip ring, the hydraulic oil is automatically drained and periodically cleaned, thus resolving the issue of electrical slip ring contamination caused by hydraulic oil leakage and improving the reliability and utilization rate of wind turbines.

CN224502603UActive Publication Date: 2026-07-14HUIZE CENTURY CONCORD WIND POWER CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUIZE CENTURY CONCORD WIND POWER CO LTD
Filing Date
2025-08-18
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Hydraulic oil leakage can lead to contamination and damage to electrical slip rings, affecting the reliability and utilization rate of wind turbines.

Method used

Design an internally self-cleaning electric slip ring. By setting a first through hole and a second through hole in the fixed part to form a fluid channel, hydraulic oil is automatically discharged by gravity and air pressure difference. It is equipped with a liquid injection pipe and an air injection pipe for periodic cleaning, and combined with a rotary stirring head to accelerate the cleaning process.

Benefits of technology

Effectively drains hydraulic oil, prevents contaminant accumulation, improves the cleaning effect and reliability of the electrical slip ring, reduces downtime due to malfunctions, and ensures the operational stability and utilization rate of the wind turbine.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224502603U_ABST
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Abstract

The utility model discloses an electrical slip ring with internal self-cleaning function, which belongs to the field of wind power equipment. The electrical slip ring comprises a rotating part and a fixed part. The fixed part is provided with a first through hole and a second through hole in communication with the inner cavity of the fixed part at intervals. The first through hole is used for discharging hydraulic oil flowing into the fixed part. The first through hole, the inner cavity of the fixed part and the second through hole jointly form a fluid channel to balance pressure. The first through hole directly discharges the infiltrated hydraulic oil, avoiding the accumulation of the hydraulic oil in the electrical slip ring, which may cause the leakage of the hydraulic oil to pollute the conductive ring and the brush, resulting in the risk of damage to the electrical slip ring. The first through hole and the second through hole balance pressure, eliminating the siphon caused by negative pressure and preventing the passive suction of external oil. The utility model directly utilizes gravity and pressure difference to realize the automatic flow of oil, without additional power, which can improve the reliability of the wind driven generator, reduce the downtime for failure and ensure the utilization rate.
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