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400kN超高强度悬式瓷绝缘子试制成功

400kN超高强度悬式瓷绝缘子试制成功

  • Categories:News
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  • Time of issue:2012-10-22 22:55
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(Summary description)

400kN超高强度悬式瓷绝缘子试制成功

(Summary description)

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2012-10-22 22:55
  • Views:
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       由中国科学院和贵州省科技厅共同支持并纳入院地合作项目的“400kN超高强度悬式瓷绝缘子”,日前在贵州毕节高原电瓷有限公司试制成功,这一产品即将为不断扩容的“西电东送”超远程、高吨位电力输送线路提供强有力的支撑。  

       超高强度悬式瓷绝缘子常用于超高压(500kV)远程输电线路,是由数十种矿物材料混合、成型,经过复杂工艺高温烧结而成的一种玻璃相和硅铝酸盐材料产品。此前,国内外远程输电线路一度也采用有机复合材料绝缘子。由于这种产品耐老化、抗污能力差,因而事故不断发生。上世纪90年代以来,产业界再次关注高强度大直径的悬式瓷绝缘子。我国120kN以上瓷绝缘子生产和销售基本被日本和美国等少数国家垄断,国外大量产品销往中国市场。由于所需20余种矿物中的元素比例各不相同,因此工作难度很大。2005年以来,他们重新对在毕节实验区发现和使用过的瓷土原料进行普查,对采集到的所需主要原材料进行了上百次理化测定。为增强黏土矿物之间的互补性和可塑性,他们从矿物成分、颗粒配比、烧成制度上进行了深入的研究,终于确定了超高瓷成分配比方案。近两年,他们反复进行了产品烧成对比,在完成小试和中试后,日前终于试产成功400kN超高强度悬式瓷绝缘子。

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