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Fireproof bus duct

A technology of refractory busway and refractory layer, which is applied in the direction of open busbar installation, etc., and can solve the problems of poor fire resistance and loss of insulation performance

Inactive Publication Date: 2011-11-02
CHENGDU ZHENZHONG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ordinary bus ducts with poor fire resistance will lose their insulation performance in about 3 minutes after being exposed to fire
Although the current research and development of the flame-retardant busway that limits the burnt area to within 2.5m from the edge of the flame, it can only be energized for 5 minutes in the actual fire resistance test

Method used

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Embodiment Construction

[0007] Such as figure 1 As shown, the present invention includes a shell cover plate 1, connecting bolts 2, conductive copper bars 3, a refractory layer 4, a shell side plate 5, an insulating spacer 6, and fastening bolts 7, wherein the refractory layer 4 is made of double or multiple layers. A layer structure is formed, and the refractory layer 4 of the double-layer structure includes inorganic materials and organic materials. The refractory layer 4 is designed as a multi-layer structure design. The selection of refractory layer 4 materials and the structure of the refractory layer are the key to the refractory busway. The present invention uses aluminum oxynitride as the main material for interlayer insulation, mainly because of its strong fire resistance, and in addition Avoid generation of harmful gases or halogens. At the same time, it has better plasticity than traditional ceramics. The refractory busway is burned at a high temperature of 980°C to 1040°C for 1.5h, and ...

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Abstract

The invention relates to a fireproof bus duct, which comprises a shell cover plate, connecting bolts, a conductive copper bar, a fireproof belting and interlayer insulator, shell side plates, fastening bolts and the like. The fireproof bus duct has a compact structure, high transmission current, simultaneously strong short-circuiting strength, safety, reliability, high resistance to mechanical damages and high fireproof performance.

Description

technical field [0001] The invention relates to a fire-resistant bus duct, in particular to a fire-resistant bus duct with a multi-layer refractory layer structure. Background technique [0002] Most of the insulating materials and insulating accessories widely used in ordinary bus ducts contain halogen elements, such as PVC and PTFE. The dense smoke released by the smoke) can completely fill a residence with a volume of about 500m3, that is, an area of ​​about 200m2. Harmful gases are produced in a fire, and PVC releases HCl to the surrounding environment, which causes corrosion of electrical equipment, power panels, control and protection screens and other devices and suffers "secondary fire disasters", and its loss is about 10 to 20 times greater than the direct fire loss. times. Even reinforced concrete is damaged by corrosion from HCl combustion fumes. Because HCl reacts with silicides in cement to form salts, it diffuses to steel bars, causing corrosion. The expans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G5/02
Inventor 聂在和
Owner CHENGDU ZHENZHONG ELECTRIC
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