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The definition of super powder fire extinguishing system

Release time:2014-03-12 viewed:0

According to the GB16668-2010 standard, dry powder fire extinguishing system by drive powder can be divided into: a) cylinder type dry powder fire extinguishing system, b) stored pressure type dry powder fire extinguishing system, c) gas drive type dry powder fire extinguishing system, while GB50347 2004 and DB37/T1317 2009 two standard, only: total flooding local application system, fire extinguishing systems, prefabricated fire extinguishing device three definitions, standards of prefabricated fire extinguishing system of the provisions are too simple, such as GB50347 - 2004 states: Prefabricated fire extinguishing system shall comply with the following provisions: fire extinguishing agent storage shall be not more than 150kg. the length of pipeline shall be not more than 20m. working pressure shall not be greater than 2.5Mpa DB37/T13172009 standard prefabricated fire extinguishing system shall comply with the following: Requirements: fire extinguishing agent storage shall be not more than 150kg. the length of pipeline shall be not more than 50m. working pressure shall not be greater than 2.5Mpa two standards differ only in the pipe length, did not list the prefabricate extinguishing system pattern, DB37/T1317 2009 standard in the interpretation of the provisions stated: "prefabricated fire extinguishing device in the manufacturers according to fire extinguishing device type precast provisions the cabinet type superfine dry powder extinguishing device, such as, the fire extinguishing equipment and pipe Compared with the net fire extinguishing system, fire extinguishing dosage filling is relatively less, fire extinguishing agent conveying pipeline is relatively short, the scope of protection is also small, so the specification of the fire extinguishing device specifications and application scope of the provisions of." According to the above content, prefabricated fire extinguishing system fire just defined dose have specific provision, if the length of pipe to analysis, pressure storage fire extinguishing system fire extinguishing system should be in the range of prefabricated, because the pressure storage type fire extinguishing system is not the driving pressure follow-up, fire extinguishing agent conveying pipe can not be too long, but because of GB16668 2010 the standard does not fine dry powder stored pressure fire extinguishing system fire extinguishing agent filling of any provisions, as far as I know, at present, the market there are already stored pressure type dry powder system filling quantity than 150kg specifications, and, if the pure to pressure storage type to the conclusion of the prefabricated fire extinguishing device, is also not true cabinet type superfine dry powder extinguishing device, although the extinguishing agent filling quantity is small, the standard it is prefabricated fire extinguishing device, but the cabinet type superfine dry powder extinguishing device also has a pressure storage type and cylinder type two categories, in this way, let the designer is difficult to determine exactly what kind of fire extinguishing system for prefabricated fire extinguishing device. According to the author's view, stored pressure type dry powder fire extinguishing system driven by gases and fine dry powder fire extinguishing agent storage in the same container, can not be made into large volume, although the calculation according to the pipeline, the pipeline may be more than 50 meters, fire extinguishing dosage can reach 500kg (or even more), but the subsequent injection power is not enough, should be provided for fire extinguishing dosage filling is less than 300kg, and directly defined as prefabricated fire extinguishing system, so as to facilitate the design personnel selection.

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