Large-scale steel heat-insulation fireproof door with enhanced fire-resistant integrity

Abstract

The invention relates to a large-scale steel heat-insulation fireproof door with enhanced fire-resistant integrity. The large-scale steel heat-insulation fireproof door comprises a door plate and a water cooling system, wherein the door plate comprises a door frame and a door leaf; the door frame and the door leaf are made of heat-resistant steel; a cavity which is distributed in a circuitous manner is concavely formed in the door leaf; two groups of water filling nozzles which are distributed up and down are formed in the vertical edge of one side, on the door leaf, of the cavity; the two groups of water filling nozzles face the hinged end of the door leaf and the door frame; the door frame is embedded and fixed on a wall body; and the water cooling system comprises two groups of steel pipes which are pre-buried in the wall body and are arranged up and down, connecting pipes which are in sealed insertion connection with the water filling nozzles, and hoses for connecting the connecting pipes with the steel pipes. According to the large-scale steel heat-insulation fireproof door provided by the invention, the fireproof door is cooled in a fire disaster environment through a water cooling manner, so that when a fire disaster occurs, the fireproof door is cooled through continuous water conveying of the water cooling system, and the temperature of the fireproof door is in a controllable range all the time; and the fire-resistant integrity performance of the fireproof door is improved and the time of keeping the structural integrity of the fireproof door is prolonged, so that the protection on indoor life and property safety when the fire disaster occurs is improved.

Description

technical field [0001] This application relates to the field of fire doors and in particular to large steel insulated fire doors with enhanced fire integrity. Background technique [0002] A fire door is a door that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. Generally installed in fire compartments, evacuation stairwells, vertical shafts and other places, the fire partitions with certain fire resistance can prevent the spread of fire and smoke, and can prevent the spread of fire within a certain period of time to ensure personnel evacuation. Steel fire door refers to the door frame, door leaf frame and door leaf panel made of steel materials. If the door leaf is filled with materials, it will be filled with non-toxic and harmless fireproof and heat insulation materials, and it is equipped with fireproof hardware accessories. It is a door with specified fire resistance performance. [0003] Fire ...

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: "New Standard for Fire Doors" GB12955-2008, Article 4.5.1.2 stipulates that fire doors should be divided into three levels: A, B, and C, and their fire resistance and heat insulation Integrity of fire resistance and fire resistance is greater than or equal to the following values: Class A should be 1.50h; Class B should be 1.0h; Class C should be 0.5h. When the existing fire doors encounter more serious fire accidents, the fire doors should maintain fire integrity The length of time is still relatively short, which is not conducive to ensuring the safety of life and property in the building, so there is room for improvement

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