Multi-layer fireproof environment-friendly cable

Abstract

The invention discloses a multi-layer fireproof environment-friendly cable which comprises a central copper pipe arranged on the innermost layer, an inner copper pipe arranged outside the central copper pipe, an outer copper pipe arranged outside the inner copper pipe and a fireproof environment-friendly outer sheath tightly attached to the outer portion of the outer copper pipe. The central copper pipe, the inner copper pipe and the outer copper pipe are concentrically arranged; the central copper pipe is filled with cooling liquid, and a mounting space for the fireproof cable core is formed between the central copper pipe and the inner copper pipe. A cooling space is formed between the inner copper pipe and the outer copper pipe, the inner copper pipe and the outer copper pipe are correspondingly supported and installed through an arranged annular supporting elastic piece, the inner copper pipe and the outer copper pipe are installed into a whole through the annular supporting elastic piece, and the space between the inner copper pipe and the outer copper pipe is also filled with cooling liquid. Through the arrangement of the three layers of copper pipe structures, the cable has very good fireproof performance, the inner copper pipe and the outer copper pipe on the outer layer can effectively protect the internal fireproof cable core, and the copper pipes are good in melting point, not prone to melting and remarkable in fireproof performance.

Description

technical field [0001] The invention relates to the technical field of fireproof cable equipment, in particular to a multilayer fireproof and environment-friendly cable. Background technique [0002] In the prior art, fireproof cables are usually used in crowded places, such as office buildings, residential buildings, subways, shopping malls, commercial buildings and other public places, which play a very important role. The fireproof performance of fireproof cables determines people's life safety and property safety Therefore, the requirements for fireproof cables in the prior art are very high. In order to increase the fireproof performance of the cables, the fireproof cables will be improved in various aspects in the prior art. [0003] In the prior art, there are many improvements to the fireproof cable, and the most commonly used one is usually to advance the material of the cable. For example, the patent document of CN 102855985B discloses "a kind of inorganic material...

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Problems solved by technology

[0003] In the prior art, there are many improvements to the fireproof cable, and the most commonly used one is usually to advance the material of the cable. For example, the patent document of CN 102855985B discloses "a kind of inorganic material high flame-retardant fireproof cable ", the raw material of its refractory layer in this patent adopts magnesium hydroxide: 85%, serpentine powder: 6%, calcium magnesium carbonate: 4%, sodium silicate: 3%, chlorinated paraffin: 2%; Make its refractory layer It has good fire resistance, but it is not enough to improve only the raw materials of the cable in the prior art

[0004] For fireproof cables, there are also methods of changing its internal structure to achieve fireproof performance. For example, "a kind of fireproof cable" is disclosed in the patent document of CN208400588U. In this document, the outer layer of the cable is provided with rubber The sheath and polyether ether ketone high temperature resistant layer are also coated with multi-layer fireproof paint layer and fluorescent layer. Each layer is made of high temperature resistant fiber material. Improvements are made on the layer body, but the overall internal structure has not been improved in a general direction, so the technical effect of fire prevention is still lacking

[0005] In addition, the fireproof cables in the prior art need not only to have excellent fireproof performance, but also to have better compression resistance, vibration resistance, tension resistance and bending resistance. The improvement is only improved from the layered structure, and the effect is not ideal.

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