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A pre-branched flexible mineral composite insulated fireproof cable and its manufacturing method

A composite insulation and branch cable technology, applied in the direction of insulated cables, cable/conductor manufacturing, insulated conductors, etc., can solve the problems that restrict the promotion and application of fireproof cables, decrease the fireproof performance of cables, and unstable electrical performance, and achieve good sealing, The effect of stable electrical performance and convenient assembly and disassembly

Active Publication Date: 2016-08-31
航天电工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the common method of branching branch lines on each floor for the trunk line of fireproof cables is to use branch junction boxes, which are complicated to install, occupy a large space, have high cost, unstable electrical performance, reduced fireproof performance of cables, complicated terminal treatment, and moisture resistance. Shortcomings such as poor performance and poor sealing performance seriously restrict the popularization and application of fireproof cables in the prior art

Method used

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  • A pre-branched flexible mineral composite insulated fireproof cable and its manufacturing method
  • A pre-branched flexible mineral composite insulated fireproof cable and its manufacturing method
  • A pre-branched flexible mineral composite insulated fireproof cable and its manufacturing method

Examples

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Embodiment 1

[0057] according to figure 1 , 2 , 5 and 6, a single-core grafted single-core pre-branched flexible mineral composite insulated fireproof cable and a manufacturing method thereof, the steps are as follows:

[0058] (1) According to the diameter requirements of the copper single wire, the copper rod is drawn into a round single wire with a diameter of 0.4mm through the continuous annealing and wire drawing process of a multi-channel circular hole drawing die;

[0059] (2) According to the requirements of the conductor structure, different annealed round copper single wires are tightly twisted on the stranding machine to complete the conductive wire core;

[0060] (3) The conductive wire core is first wrapped with 3 layers of synthetic mica tape, and then extruded or wrapped with a specified thickness of ceramic silicone rubber to complete the mineral composite insulating layer;

[0061] (4) Complete the copper sheath armoring of the main cable core and the branch cable core t...

Embodiment 2

[0069] according to image 3 , 4 , 5 and 6, a method for making a multi-core grafted multi-core pre-branched flexible mineral composite insulated fireproof cable, the steps are as follows:

[0070] (1) According to the diameter requirements of the copper single wire, the copper rod is drawn into a round single wire with a diameter of 4mm through the continuous annealing and wire drawing process of a multi-channel circular hole drawing die;

[0071] (2) According to the requirements of the conductor structure, different numbers of annealed round copper single wires are tightly twisted on the stranding machine to complete the conductive wire core;

[0072] (1) The conductive wire core is first wrapped with 4 layers of synthetic mica tape, and then extruded or wrapped with a specified thickness of ceramic silicone rubber to complete the mineral composite insulating layer;

[0073] (2) Insulated cores, filling materials and lining tapes are cabled by a cable forming machine;

...

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Abstract

A method for manufacturing a compound insulation fireproof cable of pre-branch flexible mineral comprises the following steps: selecting materials and equipment; preparing cables which comprise a main cable (1) and a branch cable (2); fixing the branch cable (2) on the main cable (1) through a fastener (3); and sealing a branch fastening point by adopting a seal sleeve (4) and silica gel. The compound insulation fireproof cable of the pre-branch flexible mineral structurally comprises the main cable (1) and the branch cable (2), wherein the branch cable is fixed on a naked position of the main cable through the fastener (3); and the main cable (1) and a branch joint of the branch cable (2) are fixed at an interface position by the seal sleeve (4) and are sealed by using the silica gel. The compound insulation fireproof cable of the pre-branch flexible mineral and the manufacture method thereof have the characteristics of simple structure of end processing, safety and reliability, convenience for assembling and disassembling, fastness for clamping wires, excellent tightness, high-temperature resistance, corrosion resistance, fire prevention and explosion prevention, cannot reduce the insulation resistance due to humidity, and can be widely applied to various industries and civil constructions.

Description

technical field [0001] The invention relates to the technical field of cable production, in particular to a prefabricated branch type flexible mineral composite insulated fireproof cable and a production method thereof. Background technique [0002] How to improve the safety of electrical lines, ensure the fire safety level of key projects, important places, special areas, etc., especially when a fire accident occurs, there is also a certain amount of time to ensure people's safe escape, reduce accident losses, and ensure line safety Power on and smooth signals are the goals pursued by cable manufacturers. [0003] At present, the common method of branching branch lines on each floor for the trunk line of fireproof cables is to use branch junction boxes, which are complicated to install, occupy a large space, have high cost, unstable electrical performance, reduced fireproof performance of cables, complicated terminal treatment, and moisture resistance. Shortcomings such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B7/00H01B7/17
Inventor 罗福安刘敬忠赛辉毛孝丹段书文
Owner 航天电工集团有限公司
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