Fire and heat protection wrap for conduits, cable trays, other e

Details Fire and heat protection wrap for conduits, cable trays, other e Fire and heat protection wrap for conduits, cable trays, other e

1997-05-23

1999-11-16

Copenheaver, Blaine

Stock material or miscellaneous articles

Hollow or container type article

Glass, ceramic, or sintered, fused, fired, or calcined metal...

405157, 405216, 428 347, 428 3691, 428920, 442117, 442138, B32B 108, F16L 1102

Patent

active

059853859

ABSTRACT:
A fire and heat protection wrapping system for wrapping conduits, cable trays, transmission lines, cables and other electrical transmission devices associated with the transmission of electricity and electrical signals, and gas and oil pipelines. The protection wrapping system includes a concentric composite laminate structure having a plurality of concentric layers for the protection of the transmission devices which are exposed to high temperatures in excess of three (3) hours in duration. The plurality of concentric layers incudes an outer first layer, an inner second layer, an inner third layer and an inner core fourth layer for wrapping the electrical transmission device. The outer first layer is a fiberglass textile having an intumescent coating for resistance to fire, heat, water, impact and the outer first layer surrounds the inner second layer. The inner second layer is a metal foil layer for reflecting heat and eliminates the convection transfer of heat; and the inner second layer surrounds the inner third layer. The inner third layer is a low conductivity refractory blanket for reducing the transmission of heat; and the inner third layer surrounds the inner core fourth layer. The inner core fourth layer is a water jacket layer for absorbing heat from the source or fire and absorbing heat from the electrical transmission device and functions as an endothermic layer; and the inner core fourth layer surrounds the core transmission device.

REFERENCES:
patent: 5319155 (1994-06-01), Maroist
patent: 5442131 (1995-08-01), Borgwarth
patent: 5660899 (1997-08-01), Rockney et al.
patent: 5681640 (1997-10-01), Kiser

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