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7MF4033-1DA50-2DB6-Z

7MF4033-1DA50-2DB6-Z

发布时间:2019-02-21 11:31:21点击率:

所属行业:塑胶原材料-> 再生塑料-> PS再生料
价格:¥2415
规格:7MF4033-1DA50-2DB6-Z
供货总量:1

7MF4033-1DA50-2DB6-Z

7MF4033-1DA50-2DB6-Z

7MF4033-1DA50-2DB6-Z

7MF4033-1DA50-2DB6-Z

7MF4033-1DA50-2DB6-Z

我们只需考虑小允许的电缆是否满足密封测试;如小密封电缆满足密封性能试验,那大的电缆由于电缆直径大,所以密封圈对电缆的抱紧力更大。

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4.3隔爆型电缆引入装置密封圈结构分析

   

目前,在隔爆型电缆引入装置常见有两种密封圈结构:1)正压式密封圈;2)位移式密封圈。

      

    

正压式密封圈:一般外圈有一个类似的V型槽;当密封圈受到挤压时,由于V型槽处强度弱,V型槽变形夹紧电缆。这类密封圈通常:1.电缆密封圈范围较小,2当密封大电缆时,密封圈对电缆的抱紧力往往过大;从而影响电缆的使用寿命。

    

位移式密封圈:一般前端有一段锥度,内孔也可以同样带锥度;这样当不同直径的电缆密封时,密封圈与电缆之间的接触点不同;这样可以避免电缆受到过大的抱紧力,从而影响电缆的绝缘性能,提供电缆的使用寿命。由于内孔一般也带有锥度,这样密封圈的电缆密封范围通常大于正压式密封圈。

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姓名:  欧工
部门:  销售部
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