The Hydraulic Calculation Of Fire Water System And The Superpressure Relief Simulation Study In The High-rise Residential Building

High-risel commerce-residence building fire water supply system,this paper used two kinds of fire extinguishing system of automatic sprinkler system and fire hydrant system study,the current automatic sprinkler system hydraulic calculation methods using conditions were analyzed,and points out its unreasonable.According to the principle of hydraulic calculation formula and hydraulics,this paper proposes a suitable nozzle and the correction of "irregular arrangement" in the pipeline characteristic coefficient method.Studied and analyzed the automatic sprinkler system and indoor fire hydrant water supply system in a water pump water and high water tank two system under the condition of the likelihood of overpressure of pipelines and the water pressure and water to meet the current fire code at the same time,by adding pressure-relief devices to minimize the residual head of pipe network,can effectively prevent pipeline overpressure,it reduces the wastage of the pipes and valves,avoid the waste of water fire water system.Combined with engineering example,through comparing specific hydraulic calculation,the most unfavorable effects on the high-level commerce-residence building automatic sprinkler system area to choose,to analyze the reason and harm of the overpressure phenomenon and the research,proposed the corresponding relief measures and technical methods.Finally,the theoretical basis and FLo WMASTER software simulation calculation principle is analyzed,using FLoWMASTER software for the building fire hydrant system model is established,the system in different stages of floor in the early years of the fire hydrant open quantity condition for dynamic simulation,Studied at the beginning of the fire hydrant water supply system of the overpressure phenomenon,and adopt different aperture of decompression orifice plate of decompression,comparing the fire water system test its decompression effect,find out the most reasonable relief measures,verify the feasibility ofthe software in the analysis of fire control system,help to promote the application of the software in fire control system,provides guidance significance for the similar research in the future.