Photoelectric composite medium-voltage fireproof lock type cable

A photoelectric composite, fire-proof lock technology, applied in power cables, power cables with shielding/conductive layers, insulated cables, etc. The effect of high locking force

Inactive Publication Date: 2018-03-23
CHENGDU ZHONGFU LIXIANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, since the exterior of each wire core is mostly a smooth cylindrical surface, when the protective layer is sheathed outside the multi-strand wire core, the wire cores will move with each other, and the distance between the wire cores changes at any time. Therefore, it is particularly troublesome when the multi-strand wire core is provided with a protective layer, and the work efficiency is revealed.

Method used

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  • Photoelectric composite medium-voltage fireproof lock type cable
  • Photoelectric composite medium-voltage fireproof lock type cable
  • Photoelectric composite medium-voltage fireproof lock type cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A photoelectric composite medium-voltage fireproof lock type cable. The cable includes a cable core composed of multiple wire cores. The cable core is wrapped with a protective layer. The first filling layer is filled between the cable core and the protective layer. The layer protects the core inside it. Each strand of wire core includes multiple groups of core materials and insulating layers wrapped outside the multiple groups of core materials. Multiple groups of core materials may be distributed around the group core material. Multiple groups of core materials are wrapped with insulating layers, and the gap between the core materials and the insulating layers is filled with a second filling layer, which can cause interference between multiple groups of wire cores through the insulating layers. Of course, an insulating layer can also be provided outside each group of core materials, and the insulating layer on the core material is separated from the rest of the core ...

Embodiment 2

[0026] On the basis of Embodiment 1, there are cooling holes on the protective layer. The cooling holes include an inner polyurethane flame-retardant and waterproof layer connected to the inner side of the protective layer, an outer polyurethane flame-retardant and waterproof layer connected to the outer side of the protective layer, and an inner polyurethane flame-retardant and waterproof layer. A spring cord is connected between the layer and the outer polyurethane flame-retardant waterproof layer. There are heat dissipation holes on the protective layer, and the inner polyurethane flame-retardant and waterproof layer and the outer polyurethane flame-retardant and waterproof layer are arranged in the heat dissipation holes, so as to avoid the damage caused by the intrusion of external water vapor into the cable.

Embodiment 3

[0028]On the basis of Embodiment 1 or Embodiment 2, the protective layer includes a polyethylene-filled vulcanized insulating layer, a copper wire braided shielding layer, an aluminum halogen-free low-smoke flame-retardant polyolefin bonded protective layer, and an aluminum-free Halogen-free low-smoke flame-retardant polyolefin bonding protective layer mainly utilizes the characteristics of halogen-free low-smoke flame-retardant polyolefin materials that do not contain halogens and other heavy metals such as lead, cadmium, chromium, mercury, etc. Even if it is burned, it will not produce toxic smoke such as halogenated Hydrogen, and no corrosive gas is released, and the smoke produced is also very small.

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PUM

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Abstract

The invention discloses a photoelectric composite medium-voltage fireproof lock type cable, belongs to the technical field of power cables, and aims to provide the photoelectric composite medium-voltage fireproof lock type cable, for increasing the efficiency of setting a protective layer outside multiple strands of wire cores. The cable comprises a cable core and a protective layer; each strand of wire core comprises multiple sets of core materials and an insulating layer; the space between the core materials and the insulating layer is filled with a second filling layer; the outer cylindrical surface of the insulating layer of each strand of wire core is provided with a locating bulge; a first grooved structure is arranged on the side surface of the locating bulge; a second groove is arranged below the locating bulge; a raised edge bulge is arranged at the outer end of the second groove; the outer cylindrical surface of the insulating layer of each strand of wire core is provided with a second grooved structure; a bulge structure is arranged below the second grooved structure; a clamping groove matched with the edge bulge is arranged at one end of the bulge structure; and, when adjacent two strands of wire cores are connected, a locking strip is installed in a space, which is formed by the first grooved structure of a strand of wire core and the second grooved structure of the other strand of wire core.

Description

technical field [0001] The invention belongs to the technical field of power cables, and in particular relates to a photoelectric composite medium-voltage fireproof lock type cable. Background technique [0002] With the rapid development of our country's national economy and the continuous improvement of people's living standards, the requirements for accelerating the construction of urban special-purpose power grids are becoming increasingly urgent. However, the application occasions of communication cables are complex, and the performance requirements for cables are extremely strict. Cables must have good mechanical and physical properties and be able to withstand various mechanical stresses, and the electrical properties will not deteriorate in harsh environments, so as to ensure long-term reliable work. However, existing cables generally have disadvantages such as poor shielding effect, low transmission speed, and poor anti-interference ability, especially for cables u...

Claims

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Application Information

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IPC IPC(8): H01B7/00H01B7/02H01B7/282H01B7/29H01B7/295H01B7/40H01B7/42H01B9/00H01B9/02
CPCY02A30/14H01B7/0009H01B7/0045H01B7/02H01B7/2825H01B7/29H01B7/292H01B7/295H01B7/40H01B7/421H01B9/006H01B9/021H01B9/024
Inventor 彭云杰李国
Owner CHENGDU ZHONGFU LIXIANG TECH
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