183、large liquid ammonia cryogenic liquid full capacity tank fire protection system - doer equipment
classification：forum publishtime：2021-08-28 14:49:25
large liquid ammonia cryogenic liquid full capacity tank fire protection system
spray cooling device for fire fighting system of large liquid ammonia low temperature liquid full capacity tank
the storage tank is equipped with 1 set of spray cooling fire fighting device, which is composed of pipeline, nozzle and water supply riser. it is set at the tank top, tank wall, stairs, safety passage and important process instrument equipment. the setting of the system complies with relevant domestic specifications.
the fire sprinkler pipes of storage tanks are 20# seamless double-sided galvanized steel pipes, and the device adopts the overall anti-corrosion method. the device is prefabricated, welded and formed, and then acid pickling and hot-dip internal and external galvanizing and anti-corrosion treatment are carried out as a whole, so as to achieve the anti-corrosion of the whole product without blind area.
the arrangement spacing of nozzles shall meet that the fan-shaped water curtain ejected by them intersects on the tank wall to prevent blind areas;
decompression facilities shall be set at the inlet of the main pipe of the sprinkler to control the inlet pressure. the selection of outlet pressure and outlet coefficient of the sprinkler and piping shall meet the requirements that the actual water spraying volume after installation shall not exceed 5% of the calculated water volume; the water spraying intensity shall not be less than 4l / min. ㎡ on the tank top and 2.5l/min. ㎡ on the tank wall.
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