Long life water resistant medium voltage cable insulation structure
By employing a multi-layered composite structure in medium-voltage cross-linked polyethylene insulated cables, including a gradient ion-capturing shielding layer, an interface ion-capturing synergistic transition layer, and a self-healing outer sheath, multiple protection issues of medium-voltage cables in humid environments are solved, achieving long-life operation.
CN122417548APending Publication Date: 2026-07-17DONGLI CROSSLINK CABLE CO LTD
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Patent Information
- Application Number
- CN202610781570.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-02
- Publication Date
- 2026-07-17
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Figure CN122417548A_ABST
Abstract
本发明公开了一种长寿命抗水中压电缆绝缘结构，自内向外依次包括阻水型导体、梯度离子捕捉型半导电导体屏蔽层、界面离子捕捉协同过渡层、抗水树交联聚乙烯绝缘层、界面电场均化过渡层、梯度离子捕捉型半导电绝缘屏蔽层、分层自限制型半导电吸水膨胀缓冲阻水层、湿度响应型智能阻水带层、金属屏蔽层和自修复外护套层。本发明通过梯度离子捕捉实现离子捕捉的时空匹配，通过双侧界面过渡层消除界面缺陷，通过分层缓冲结构解决膨胀力学兼容性问题，通过智能阻水带实现故障局部化阻断，通过自修复外护套提供主动防护。五重梯度协同防御体系使电缆在潮湿环境下的预期寿命较普通电缆延长，具有显著的技术经济价值。
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