Oil guiding and collecting device

By designing an oil guiding and collecting device, the problem of leakage in the main bearing of the wind turbine generator was solved, realizing the recovery and reuse of oil, improving the lubrication effect of the bearing and the operational reliability of the equipment.

CN224396625UActive Publication Date: 2026-06-23GUANGZHOU SINOMACH SEALING TECH CO LTD
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Patent Information

Application Number
CN202521925337.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-08
Publication Date
2026-06-23
Estimated Expiration
2035-09-08

AI Technical Summary

Technical Problem

The main bearing of a wind turbine generator may leak due to the lubrication properties of thin oil. Existing sealing structures cannot effectively prevent oil leakage, leading to nacelle contamination, increased maintenance costs, and potential bearing lubrication problems or damage.

Method used

Design an oil guiding and collecting device, including a support, a dust seal, a filter screen, and a strong magnetic bolt. The leaked oil is returned to the bearing through the oil return hole and channel, and impurities are filtered by the filter screen. The strong magnetic bolt adsorbs metal debris, ensuring that the bearing is fully lubricated and preventing damage.

Benefits of technology

This enables efficient oil recovery and reuse, avoiding bearing wear and damage, improving bearing life and equipment reliability, and reducing maintenance costs.

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Abstract

The utility model discloses an oil guiding and collecting device, which relates to the technical field of sealing, and comprises a supporting piece, the supporting piece is provided with a dustproof seal which is propped against the peripheral wall of a main shaft, a first oil return hole is arranged in the supporting piece, an end cover is provided with a second oil return hole, and a channel for communicating the first oil return hole with the second oil return hole is arranged between the first oil return hole and the second oil return hole. The leaked oil can flow back into the bearing from the first oil return hole, the channel and the second oil return hole, so that the oil is prevented from being reduced due to leakage, the bearing is ensured to be fully lubricated, and the service life of the bearing is prolonged. A first filter screen is arranged on the first oil return hole, and a second filter screen is arranged in the second oil return hole, so that dust or impurities entering from the outside can be filtered, the impurities are prevented from entering the bearing, and the abrasion of the bearing is reduced. The strong magnetic bolt is screwed to the end, away from the end cover, of the channel, metal chippings can be adsorbed, bearing damage is avoided, and manual cleaning is facilitated.
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