Experimental Research On Steel Fire Roller Shutter Of Rotary Water Sprinkler Protection

Fire resistant roller shutter is the partition of fireproofing division or subarea of building, can rise the function of fireproofmg subarea, thus making it become one of the fire fight facilitiesesthe of important and indispensably in the building. Currently the local factory product of the fire resistant roller shutter,according to the type of shade plate, in principle divided into the following three type:steel fire resistant roller shutter of the single plank,compound steel fire resistant roller shutter,inorganic fire resistant roller shutter.The single plank performance of heat insulation is very bad;The compound inprove in performance of heat insulation, but it still can't satisfy far in the 3 h that average temperature rise of the face back the fire of the shade piece is no bigger than biggest temperature rise who is 140℃ or biggest temperature rise of the face back the fire of the shade piece is no bigger than 180 ℃.The inorganic'performance of heat insulation is dood, it completely satisfy of request 《 high public building design fire prevention norm 》 , but its cost is higher and lack effectively function of guard against theft.Therefore, have the necessity to develop a sort of fire resistant roller of new type, make it contented various request of fire prevention partition.On the foundation of the common steel resistant roller shutter, get a kind of modified version steel resistant roller shutter, make it have the larger surface,and raise diathermanous efficiency of shade plate.Develop a kind of new sprinkler head-sprinkler head of rotary water sprinkler.When the high speed revolving water current and keep shoot water current pass a small caliber, bump and break into pieces mutually.The thin water current of high speeds do not need the dish of splash water and also can resolve small bead of water, water with small drop of water and fog jet from the nozzle, carry on the cooling to the shade piece of the fire resistant roller shutter , cooling effect is good.By orthogonal test and select of design parameter of fire rollershutter of rotary water sprinkler protection, get the best parameter is:the spraing intensity q=0.25L/s · m;the pressureP=0.20MP;the space between sprinkler head M=1.44m;the space between sprinkler head and flade piece L=0.60m;the declination angle of the sprinkler head b=22° . Through the analysis ofeconomic and technique, result indicate that fire roller shutter of rotary water sprinkler protection have many merits:conceiving is novel,the structure is simple,ability of heat insulation is strong ,spraing intensity is small, The cost of fire resistant roller shutter door is low ,it is a kind of preferable fire resistant roller shutter.