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| Method for Adaptability Improvement Slip-ring in Hygrothermal Environment |
| Received:May 15, 2018 Revised:August 25, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.08.009 |
| KeyWord:slip-ring hygrothermal environment insulating materials powdered carbon |
| Author | Institution |
| WEN Meng-jun |
The 29th research institute of CETC, Chengdu , China |
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| Abstract: |
| Objective To improve slip-ring’s adaptability in hygrothermal Environment. Insulating material damage and carbon powder accumulation were observed by anatomizing samples. Insulativity, anti-electric strength, carbon powders accumulation and electrical conductivity of insulating material were theoretically analyzed and tested at different temperature and humidity to compare performance of different insulating materials to find out the most suitable one for the sealing slip ring, and find out the method to solve the carbon powders accumulation by comparing the rolling slip ring, carbon brush and brush filaments. Results In hygrothermal environment, the moisture from the joint and the cable connection would impact the slip ring. The increase of tem-perature and humidity decreased the performance insulating material. The carbon powders would accumulate in the slip ring and conduct electricity with the influence of the hygrothermal environment in a long time service. Sealing the slip ring partially could decrease the moisture percolation. PPO with excellent performance can replace the insulating material in the slip ring to reduce the influence of the hygrothermal environment. Replacing the carbon brush with brush filaments could avoid the production of carbon powders. Conclusion The adaptability of slip-ring in the hygrothermal environment might be improved by integrating local seal, insulation material and carbon brush improvement measures. |
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