Water-resistant power cable

A power cable and water-blocking technology, which is applied to power cables with shielding layers/conductive layers, insulated cables, cables, etc., can solve problems such as cable damage, steel strip, copper strip metal corrosion, and insulation performance degradation

Inactive Publication Date: 2010-07-14
江苏南亚电缆集团有限公司
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Problems solved by technology

[0002] During the long-term operation of power cables, the phenomenon of water ingress has increasingly become a potential hidden danger affecting the safe operation of cables. Once the cables enter water, it will cause metal corrosion such as steel strips and copper strips, and the insulation performance will decline. Under the action, water tree agin

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Embodiment Construction

[0009] Such as figure 1 As shown, a water-blocking power cable mainly includes a wire core, a wire core water-blocking layer 7, a wrapping tape 9 and an outer sheath 10; wherein the wire core is sequentially provided with a water-blocking layer 2 and an inner shielding layer outside the conductor 1 3. It is composed of insulating layer 4, outer shielding layer 5 and copper shielding layer 6. After several wire cores are cabled, a wire core water-blocking layer 7 is installed on the outside. The gap between the wire core water-blocking layers 7 is filled with filling strips 8. A wrapping tape 9 and an outer sheath 10 are arranged in sequence outside the core water-blocking layer 7 .

[0010] The invention solves the impact on the cable caused by the damage of the cable and the entry of water or water vapor during the joint, and reduces the resulting cost; moreover, the cable also plays a certain protective role after the cable is damaged after laying. At the same time, the cab...

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Abstract

The invention discloses a water-resistant power cable, which comprises a wire core, a plurality of wire core water-resisting layers, a packaging band and an outer sheath. The wire core is arranged outside a conductor and is provided with a water-resistant layer, an inner shielding layer, an insulating layer, an outer shielding layer and a copper shielding layer in sequence, wire core water-resistant layers are arranged outside a cable formed by a plurality of wire cores, gaps of the wire core water-resistant layers are filled with filler tapes, and the packaging band and the outer sheath are then arranged outside the wire core water-resistant layers in sequence. Since the cable core of the cable of the invention is filled with the water-resistant material, water or water vapor can not flow in the cable after entering the cable, thereby eliminating the influence generated after the water or water vapor enters the cable.

Description

technical field [0001] The invention relates to a power cable, in particular to a water-blocking power cable, which is specifically applied in the power transformation and distribution cable lines in the power system and the cable lines in the power systems of large and medium-sized industrial and mining enterprises. Background technique [0002] During the long-term operation of power cables, the phenomenon of water ingress has increasingly become a potential hidden danger affecting the safe operation of cables. Once the cables enter water, it will cause metal corrosion such as steel strips and copper strips, and the insulation performance will decline. Under the action of water tree aging, the phenomenon of water tree aging will occur, which will eventually lead to cable breakdown, and even explosion and injury. [0003] Existing cables have a certain waterproof effect, but after cable laying and laying, cable damage occurs from time to time, and in addition, the cable joi...

Claims

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Application Information

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IPC IPC(8): H01B9/02H01B7/285
Inventor 戴志龙田刚刘卫清戴岳明陆斌
Owner 江苏南亚电缆集团有限公司
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