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Ethylene old dry-type transformers in the coal mine application |
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| Ethylene old dry-type transformers in China's major industrial sectors have been replaced Youjin transformers trend, but in the coal mine or a blank application. Recently, the Yanzhou Mining (Group) Company mechanical system repair plant and materials developed by the Department of mine KBSC-1250/6-old dry-type transformers used Gebao ethylene. This old mine using dry-type transformers are Gebao ethylene ethylene old dry-type transformers for the device is, inter-long circular corrugated Gebao frames. Gebao transformer device is the electromagnetic design of structural design is based, from reduce losses, improve insulation intensity, lower Wensheng perspective, the coal mine for the transport and parking lanes, transformers outside dimensions must be minimal, especially in the direction of high to reduce size, Therefore Gebao transformer device is the Tiexin pillar diameter are relatively large, high and low voltage coil diameter change. Thermal stability is ethylene old dry-type transformers in the coal mine application of the key issues to be resolved. They adopted the following measures : strict control of the material composition of epoxy resins, epoxy resin materials chosen H-class, through which add an appropriate amount of Zengrenji, promoting agent, firming agent, ingredients and fill to improve the thermal conductivity of materials, machinery performance and conductive performance, its coefficient of thermal expansion and wind thread used in the copper line avoid the old coil temperature changes as a result of heat stress arising prevent the winding shape, damage; coil using a high-temperature vacuum pressure centrifugal fully remove moisture, and enhanced performance and coil insulation resistance flows performance; Tiexin and high and low voltage between coil and coil are designed internal gas Road, has increased the coil heat release area, improved cooling conditions; long circular corrugated wall around the outside of the heat release Gebao transformers to increase the maximum size, and made in China with capacity transformer casings Gebao compared 20% increase heat dissipation area, the most concentrated in calories top spreading hot area is more than twice the traditional products. Wensheng testing and Jining 2nd coal mine in 3301, located in the industrial testing confirmed its cooling performance than similar products made in China transformers superiority. (Lijianfeng) |
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