Fire-resistant double-shielded cable

A double-shielded, fire-resistant technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of low cable shielding performance, poor fire-proof effect of fire-resistant cables, poor use effect, etc., to achieve simple and practical structural design, increase tensile strength, reduce damage effect

Inactive Publication Date: 2019-02-22
METALLURGICA BRESCIANA MAANSHAN SPECIAL CABLES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a fire-resistant double-shielded cable, which solves the problem of poor fire-proof effect of the existing fire-resistant cable in the event of a fire. Problems with poor performance

Method used

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] see Figure 1-3 , the embodiment of the present invention provides a technical solution: a fire-resistant double-shielded cable, including a fixed reinforcing core 1, the fixed reinforcing core 1 is a steel wire strand, and the tensile and torsional performance of the entire cable can be increased by fixing the reinforcing core 1, The outer side of the fixed reinforcing core 1 is fixedly provided with a protective sheath 2, the outer side of the protect...

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Abstract

The present invention discloses a fire-resistant double-shielded cable. The fire-resistant double-shielded cable comprises a fixing reinforcing core; the fixing reinforcing core is a steel stranded wire; a protective sleeve is fixedly disposed on an outer side of the fixing reinforcing core; cable layers are disposed on an outer side of the protective sleeve; an outer shielding layer is fixedly disposed on outer sides of the cable layers; a filling layer is fixedly disposed between the cable layers and the outer shielding layer; a fire-resistant layer is fixed on an outer side of the outer shielding layer; an outer sheath is fixedly disposed an outer side of a high elastic sheath; the fire-resistant layer comprises a copper mesh; a mica layer is fixedly disposed on an outer side of the copper mesh; a fire-resistant inorganic staple fiber adhesive layer is fixedly disposed on an outer side of the mica layer; and a covering layer is arranged on an outer side of the fire-resistant inorganic staple fiber adhesive layer. The invention relates to the technical field of cables. The fire-resistant double-shielded cable can improve the fire resistance of the cable, can enhance the shieldingand safety performance of the cable layer, and is beneficial to the safe use of the cable; and the structural design is simple and practical.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a fire-resistant double-shielded cable. Background technique [0002] With the rapid development of power cable buried laying projects, higher requirements are put forward for cable protection. The cable protection sleeve is made of polyethylene PE and high-quality steel pipes, which are pre-treated by sandblasting and shot blasting, dipped in plastic or coated, and heated and cured. Craft made. It is the most commonly used electrical insulation tube for protecting wires and cables. It is widely used because of its good insulation performance, high chemical stability, no rust, no aging, and adaptability to harsh environments. The safety of cables plays a vital role in ensuring the normal operation of many instruments and equipment that are important to the safety of life and property. Nowadays, because the fireproof performance of cables is receiving more and more attention, va...

Claims

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Application Information

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IPC IPC(8): H01B7/18H01B7/02H01B7/295H01B7/22
Inventor 李芃单晓伟
Owner METALLURGICA BRESCIANA MAANSHAN SPECIAL CABLES
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