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Water-spray typeFireproof rolling shutter door by recombination steely Fire shutter, A water pipe and a control system are arranged on a cloth on one side of the transmission device. The tangential vortex nozzle atomizes water droplets of about 0.1mm to spray onto the rolling curtain surface to implement forced cooling of the rolling curtain surface. Compared with ordinary steely Fire shutter with independent closed automatic sprinkler system on both sides of the rolling curtain, water consumption can be saved. It retains the advantages of recombination steely Fire shutter, and uses water mist to cool the curtain surface. Within the fire resistance limit of 3h, the temperature of the back fire surface of the curtain surface is below 200℃. The thermal insulation capability of the Fire shutter instead of the Fire prevention wall is ensured, and it is a product with strong vitality.
Make full use of the heat absorption and vaporization of water, so that the cooling effect of the curtain surface is obvious. By making full use of the heat absorption and vaporization of water, the cooling effect of curtain surface is obvious, and the effect of eliminating Fire smoke is good. The water steam can effectively protect the transmission device of Fire shutter.
Applicable to industrial and civil buildings with Fire prevention area separation without automatic spray where the temperature rise of the back fire surface of the roller curtain is the criterion (average temperature rise ≦140℃, maximum temperature rise ≦180℃), fire resistance limit ≧3.Oh).
(1) All layers of fire hydrant system water supply, the optimal water supply pressure is 0.30Mpa, cloth placed on the side of the curtain, cloth water strength ≥0.20m3/h.m2
(2) The spacing of the nozzle is 300mm ~ 400mm, and the spacing between the nozzle and the curtain surface is 600mm ~ 700mm.
(3) The pressure test of the water mist system should be able to withstand 1.5 times the rated working pressure, the test time is 5min, there should be no leakage and deformation.
(4) The water supply pipe of the water mist system should be selected with a diameter of not less than φ15mm galvanized steel pipe or Stainless steel pipe, usually installed in the position close to the box cover or ceiling.
