Protection pipe sleeve for water-passing power cable

A power cable and protection tube technology, which is applied in the field of protective tube sleeves for power cables passing through water, can solve the problems of difficulty in finding in time, difficulty in checking the location of damaged points, etc.

Active Publication Date: 2020-10-20
YONGGAO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that it is difficult for people to find out in time when the protectiv...

Method used

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  • Protection pipe sleeve for water-passing power cable
  • Protection pipe sleeve for water-passing power cable
  • Protection pipe sleeve for water-passing power cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] refer to Figure 1-5 , a kind of protective sleeve for power cables through water, comprising a protective tube 4, the protective tube 4 is covered with a visible layer 1, the visible layer 1 is made of a transparent elastic material, the visible layer 1 and the outer wall of the protective tube 4 There is a luminescent layer 2 between them, the luminescent layer 2 is electroluminescent paint, the protective tube 4 is provided with a wire core 6 with an insulating layer 5, an induction coil 7 is installed in the insulating layer 5, and the insulating layer 5 and the protective tube 4 A water-proof cavity 8 is formed between them, and a short-circuit device and a conduction device are fixedly arranged in the water-proof cavity 8, and a high-resistance ring 3 is set on the outer side of the insulating layer 5, and one end of the high-resistance ring 3 is electrically connected with the induction coil 7, and the high-resistance coil 3 is electrically connected to the induct...

Embodiment 2

[0036] refer to Image 6 , the difference between this embodiment and Embodiment 1 is that: the outer fixed sleeve of the insulating layer 5 is provided with a friction sleeve 9, one end of the friction sleeve 9 is interference fit with a fixed ring 17, and the outer side of the friction sleeve 9 is wound with a A flexible spring 16, and one end of the flexible spring 16 is fixedly connected to the fixed ring 17, and the flexible spring 16 can only move away from the fixed ring 17 when stretched.

[0037]When the present embodiment is in use, the flexible spring 16 can be connected with the induction coil 7, and the flexible spring 16 is on a parallel branch, because the flexible spring 16 has an electrostrictive effect, so when an alternating current flows through the flexible spring 16, the flexible spring 16 The spring 16 will quickly expand and contract, thereby rubbing against the friction sleeve 9 to generate heat;

[0038] It is worth mentioning that when the flexible ...

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Abstract

The invention discloses a protection pipe sleeve for a water-passing power cable. The sleeve comprises a protective tube, wherein a visible layer is coated outside the protective tube. A light-emitting layer is arranged between the visible layer and the outer wall of the protective tube. A wire core with an insulating layer is sleeved in the protective tube. An induction coil is installed in the insulating layer, a waterproof cavity is formed between the insulating layer and the protective tube, a short circuit device and a conduction device are fixedly arranged in the waterproof cavity, the outer side of the insulating layer is sleeved with a high-resistance ring, one end of the high-resistance ring is electrically connected with the induction coil, and the other end of the high-resistance ring is electrically connected with the conduction device. Maintenance personnel can be helped to judge whether the protection tube is damaged or not according to the light-emitting condition of thelight-emitting layer. Maintenance personnel do not need to use other maintenance tools for detection, and if the protection tube is damaged, the light-emitting layer corresponding to the damage pointposition or the position adjacent to the damage point emits light, so that the maintenance personnel are guided to quickly find the damage point, and maintenance time consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of power cable protection devices, in particular to a protection sleeve for a water-passing power cable. Background technique [0002] Power cables are often used in telecommunications or power transmission. In different occasions, protective sleeves with different functions are required to ensure the normal operation of the cables. For example, in an environment with complex lines and many electrical equipment, it is necessary to use flame-retardant and fire-resistant protective sleeves. ; On the road surface or in the pipeline, it is necessary to use wear-resistant and non-breakable protection sleeves; in the lake bottom, river bottom and other water-passing environments, it is necessary to use moisture-proof sealing protection sleeves. [0003] Most of the existing moisture-proof sealing protective sleeves realize the water-blocking function by adding a rigid armor layer and a protective layer to the outs...

Claims

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Application Information

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IPC IPC(8): H02G9/02G01R31/58
CPCG01R31/58H02G9/02
Inventor 林峰
Owner YONGGAO CO LTD
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