Provide pin to avoid sealing at midway and protect seal part of packer, enhanced reliability of plugging string.
设计有防中途坐封的销钉，保护封隔器的密封件，提高了封堵管柱的可靠性。
The utility has merits of reasonable structure, high insulation level, strong pollution flashover and moisture flashover resistance and enhanced reliability of power line function.
本实用新型结构科学合理，绝缘水平高、抗湿闪和抗 污闪能力强，增强了电力线路运行的可靠性。
The utility has merits of reasonable structure, high insulation level, strong pollution flashover and moisture flashover resistance and enhanced reliability of power line function.
本实用新型结构科学合理，绝缘水平高、抗湿闪和抗 污闪能力强，增强了电力线路运行的可靠性。
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