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Water-blocking power cable

A power cable and water blocking technology, applied in the field of power cables, can solve the problems of poor waterproof performance of cables, poor protection measures of power cables, cable wear, etc., and achieve the effect of improving waterproofness and avoiding the phenomenon of water tree branches.

Pending Publication Date: 2022-05-17
何罡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a water-blocking power cable, one of which is to provide a waterproof layer, an insulating layer, a cut-proof layer and a water-stop strip, so as to solve the problem of poor protection measures for the power cable when the existing medium-voltage power cable is used. The basic structure is that the outer ring of the cable is covered with several layers of rubber, which makes the waterproof performance of the cable poor; another purpose is to solve the problem that the existing medium-voltage power cable is easily worn and causes leakage when the cable is in use. , causing power accidents, making the safety of the cables unable to be guaranteed, in order to enhance the protective effect of the cables

Method used

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Examples

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Effect test

Embodiment 1

[0040] as Figure 1-8 As shown, the present invention provides a water-blocking power cable, comprising a cable body 1, the cable body 1 is provided with a waterproof layer 2, the internal of the waterproof layer 2 is provided with a reinforced support ring 10, the outer wall of the reinforced support ring 10 is fixed connected to the arc support shrapnel 11, the inner wall of the arc support shrapnel 11 is fixed connected to the first undertake shrapnel 142, the first undertake shrapnel 142 is provided above the second undertakening shrapnel 143, the inner wall of the curved support shrapnel 11 is fixed connected to the second built-in support shrapnel 141, The upper surface of the first bearing shrapnel 142 is fixedly connected to the first elastic support assembly 12, and the outer wall of the curved support shrapnel 11 is fixedly connected with filler 8.

[0041]In the process of the arc support shrapnel 11 is squeezed, the first elastic support component 12 and the second ela...

Embodiment 2

[0046] as Figure 1-8As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the bottom end of the scattering spring 21 is fixed with the outer wall of the built-in flex 22, the outer wall of the built-in flex 22 is fixed to be connected to an external reinforcing strip 23, the inner wall of the reinforcing support ring 10 is fixed connected to the protective layer 16, the inner wall of the protective layer 16 is fixed to the guide core 9, the outer wall of the guide 9 is fixed to be connected to the separator layer 24, the outer wall of the waterstop bar 6 is fixed to be connected to the anti-cut layer 5, by the separation layer 24 of the outer surface of the core 9 is socketed, And the protective layer 16 of the outer wall of the separation layer 24 and the reinforced support ring 10, the guide core 9 and the earth and the different phases of the guide core 9 are electrically isolated from each other, so that each grid layer in the p...

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Abstract

The invention discloses a water-blocking power cable, and relates to the technical field of power cables, the water-blocking power cable comprises a cable main body, the cable main body is internally provided with a waterproof layer, the waterproof layer is internally provided with a reinforcing support ring, and the outer wall of the reinforcing support ring is fixedly connected with an arc-shaped support elastic sheet. The inner wall of the arc-shaped supporting elastic piece is fixedly connected with a first bearing elastic piece, and a second bearing elastic piece is arranged above the first bearing elastic piece. According to the invention, external water is effectively prevented from entering the inner space of the filling material along the damaged part through the water absorption layer, the water blocking grids formed by the water stop strips are utilized to effectively avoid the water branch phenomenon, and the waterproof layer is utilized to further improve the waterproofness of the cable main body, so that the service life of the cable is prolonged. The plurality of guide cores are wrapped and integrated into a whole by the reinforcing support rings and the filler, so that the reinforcing support rings form a guide core protection layer, and the protection capability of the cable main body is further improved by using the arc-shaped support elastic sheets, the anti-cutting layer, the anti-cutting reinforcing rings and the like.

Description

Technical field [0001] The present invention relates to the technical field of power cables, specifically to a water-blocking power cable. Background [0002] The development of power cables from the variety must adapt to a wide range of applicable occasions and methods. With the deepening of the research and understanding of the water absorption and water branches of the insulating layer between the cable cores, people are becoming more and more aware of the importance of waterproof performance for medium and high voltage power cables. In the rainy areas with high groundwater levels or south of the Yangtze River, more and more users and various regional occasions have put forward waterproof requirements for cables. [0003] Power cable transmission power frequency strong current, due to the extremely low withstand voltage strength of the air, the insulation of the power cable is never allowed even if there is a very small gap or pore, the cable core structure is also dense and ...

Claims

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Application Information

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IPC IPC(8): H01B7/282H01B7/288H01B7/295H01B7/17H01B7/18H01B9/00
CPCH01B7/288H01B7/282H01B7/2825H01B7/17H01B7/18H01B7/1875H01B7/295H01B7/1805H01B7/1825H01B9/00Y02A30/14
Inventor 何罡
Owner 何罡
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