Fire smoke exhaust pipe

By using a combined structure of paper-shaped connectors, sealing gaskets and high-temperature sealant at the connection parts of the fire-fighting smoke exhaust pipes, the air leakage problem caused by the deformation of the rubber ring during fire is solved, the sealing and heat insulation effect is achieved, the collapse risk is reduced, and the equipment maintenance and fault positioning capabilities are improved.

CN119022154BActive Publication Date: 2025-03-28XINGHUA FANGYUAN FIRE EQUIP CO LTD
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Patent Information

Application Number
CN202411518501.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-29
Publication Date
2025-03-28
Estimated Expiration
2044-10-29

AI Technical Summary

Technical Problem

The existing fire-fighting smoke exhaust pipes cause air leakage due to the deformation of the rubber ring during fire, which reduces the smoke exhaust capacity and may melt the fixtures and increase the risk of collapse.

Method used

Using a structure combining a paper-shaped connector and a sealing gasket, a sealed annular cavity is formed through a high-temperature sealant and an extrusion assembly. The extrusion assembly is used to tension extrude the high-temperature sealant, fill the gaps to block the smoke leakage, and detect the sealing state through a pressure sensor.

Benefits of technology

Effective sealing and heat insulation, prevent smoke leakage, maintain the insulation thickness of the pipe connection parts, avoid temperature collapse, stabilize the connection of fixtures, reduce the risk of collapse, and facilitate daily maintenance and fault positioning.

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Abstract

The present invention belongs to the technical field of fire-fighting facilities, and specifically is a fire-fighting smoke exhaust pipe. In a closed annular cavity formed by a sealing gasket and an extrusion component, a sealing component closes the gap between two pipe bodies, and a high-temperature sealant is stored on the inner side thereof. When the high-temperature smoke causes the sealing gasket to undergo irreversible deformation, further causing a gap to be generated between the sealing gasket and the side surface of the pipe body, the high-temperature sealant is subjected to tension extrusion by the extrusion component, so that the high-temperature sealant is filled into the gap generated above. The filling and sealing of the high-temperature sealant can block smoke leakage. At the same time, the gap between the two pipe bodies is fully filled, so that the connection portion between the two pipe bodies still has a heat-insulating thickness, thereby preventing the temperature from dissipating outward through the gap and affecting the stability of the fixed connection of the fasteners around the outer part of the pipe body and the round-shaped connector.
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