Fire-resistant bus duct and method of constructing same

Abstract

The invention discloses a fire-resistant bus duct and a method of constructing the same. By improving fire-resistant performance of the bus duct, the fire-resistant standard can be met and the short circuit phenomenon that arises from heat collection of a connecting part of the bus duct due to convective heat transfer is avoided. Additionally, retraction-induced distortion due to thermal deformation of the bus duct is avoided. Furthermore, stability and reliability can be ensured by fulfilling the normal function for enough long time in case of fire disasters.

Description

technical field [0001] The present invention relates to a fire-resistant busway and its construction method, and more specifically, it relates to meeting the strengthened fire-resistant standard by improving the fire-resistant performance, and blocking the temperature rise caused by heat transfer, and in the event of a fire within a sufficient time A fire-resistant busway and its construction method that can ensure stability and reliability by exerting normal functions. Background technique [0002] Generally, as a medium for transmitting electric energy, cables were often used in the past, but recently, bus ducts are often used as a substitute for cables. The busway has a busbar (bus bar) that functions as the conductor core wire in the cable, so it can conduct a large-capacity current. [0003] In the past, the wiring method using cables was mostly used in the power wiring method, but the wiring method using bus ducts (bus ducts) equipped with bus bars (bus bars) has grad...

AI Technical Summary

Problems solved by technology

[0012] Regarding this kind of refractory busway, in the past, the structure of heat-insulating the outer box or the inner busbar, that is, the conductor, has been adopted simply through the interlayer. However, when exposed to flames for a long time, the outer box or the inner conductor are easy to melt, especially It includes a joint with a relatively low heat-resistant temperature, so it is difficult to meet the target fire-resistant performance when performing a fire-resistant test

[0013] In addition, in order to improve the refractory performance, when the structure of the heat insulating material is mixed with cast molding, the refractory performance can be improved to a certain extent, but the production process of the product is complicated, and a separate mold is required made on site

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