Research On The Reliability Application Of Fire Water Supply System In High-rise Public Buildings

High-rise public buildings fire water supply system is the basic element of fire protection system of high-rise public buildings. Its reliability has decisive influence on high-rise building fire protection. It's very necessary to study the reliability of fire water supply system in hgh-rise public buildings.The present situation about high-rise public buildings fire water supply system and the present research situation about the reliability of water supply system in and out of our country was analyzed in this paper. Combining the codes of design and engineering practices, the reliability evaluation of fire water supply system, the reliability optimization about each cell of hydraunt water supply system, the reliability demands about each component of the sprinkler system, and the influence of the sprinkler arrangement on the reliability of the sprinkler system were studied in this paper .The paper introduces theoretical basis on reliability. Function and probability features of the fire water system were analysed. Reliability basic indicators for fire water system were put forward. Pipe network of fire water system was replaced equally by mixed-connected system, and reliability calculation of the pipe network was done. The reliability calculation on the reserve fire pumping station was evaluated too.Reliable cells offered a reliable hydraunt fire water supply system. The reliability about several forms of hydraunt water supply system was compared,the necessity of the fire pool in hign-rise public buildings devided into two was analyzed, and the reliability about several forms of absorbing pipe'arrangement was compared too in the paper. To ensure creditable start of fire fighting pump when fires, the periodical and automatic checking of water pump is important. Measures of pressurizing, depressurizing and ways to avoid excess pressure are important safety precautions for the hydraunt fire water supply system to follow design flow and design pressure.The sprinkler system is the most important means to put out the beginning fire in high-rise public buildings. Layout of control valves on the orbicular pipe before wet alarm valves in the Code of design for sprinkler systems was improved in the paper. Space between the sprinklers should be arranged uniformly between pillars and girders. The algorithm of"rectangle eara and point-by-point"was applied to make hydraulic calculation on the sprinkler system of even space, space small and ueven space sprinkler arrangement, and the reliability of these sprinkler system was discussed in the paper .