消防水泵计算表

,室内消火栓泵计算,,,,,,

,消火栓泵流量：Q＝,,25.0L/s,=,90.00m3/h,,

,所需扬程：Hb＝h1+h2+h3+h4＝,,,73.10m,,,

,,h1（几何高差）＝,,22.00m,h2(泵房损失)＝,,5.00m

,,h3(栓口水头)＝,,25.00m,h4(管路损失)＝,,17.59m

,h3(栓口水头)的计算：,,,,,,

,,h3=AdLdqxh2+qxh2/B+Hsk,,,,24.00m,

,,Ad—水带比阻，查《技术措施》表7.1.5-2,,,,0.00172,

,,Ld—水带长度，取25m,,,,25.00m,

,,qxh—水枪喷嘴射出流量，依据充实水柱确定,,,,5.7L/s,

,,B—水枪特性系数，查《技术措施》表7.1.5－2,,,,1.577,

,,Hsk—消火栓栓口水头损失,,,,2.00m,

,h4(管路损失)的计算：,,h4=ha+hb,,,,

,,主环网管长L＝,,,300.00m,，流量Q=,25.00L/s

,,管道管径为：,DN150,，流速V=,1.415m/s,,

,,沿程水头损失：i=105Ch-1.85dj-4.87qg1.85=,,,,0.0234m/m,

,,ha=1.3xLxi=,9.14m,,,,

,,立管管长L＝,,,20.00m,，流量Q=,25.00L/s

,,管道管径为：,DN100,，流速V=,3.183m/s,,

,,沿程水头损失：i=105Ch-1.85dj-4.87qg1.85=,,,,0.1688m/m,

,,hb=1.3xLxi=,4.39m,局部水头损失为沿程损失的0.3,,,

,选泵如下：,"消防水泵XBD7.5/25-L100-232Q=25L/S,P=0.75MPa,N=37KW",,,,,

,,基础尺寸1000*1000（有隔振安装）,,,,,

,自喷泵计算,,,,,,

,自喷水泵流量：Q＝,,30.0L/s,=,108.00m3/h,,

,所需扬程：Hb＝h1+h2+h3+h4＝,,,91.23m,,,

,,h1（几何高差）＝,,25.00m,h2(泵房损失)＝,,4.00m

,,h3(水流指示器后水头)＝,,30.00m,h4(管路损失)＝,,26.86m

,h4(管路损失)的计算：,,h4=ha+hb+hc+hd+he,,,,

,,水泵后主环网管长L＝,,,300.00m,，流量Q=,30.00L/s

,,管道管径为：,DN150,，流速V=,1.698m/s,,

,,沿程水头损失：i=105Ch-1.85dj-4.87qg1.85=,,,,0.0328m/m,

,,ha=1.3xLxi=,12.80m,,,,

,,报警阀组后管网管管长L＝,,,20.00m,，流量Q=,30.00L/s

,,管道管径为：,DN150,，流速V=,1.698m/s,,

,,沿程水头损失：i=105Ch-1.85dj-4.87qg1.85=,,,,0.0328m/m,

,,hb=1.3xLxi=,0.85m,,局部水头损失为沿程损失的0.3,,

,,湿式报警阀水头损失取0.04Mpa,,,hc=,4.00m,

,,水流指示器水头损失取0.02Mpa,,,hd=,2.00m,

,,安全信号阀水头损失取0.02MPa,,,he=,1.00m,

,选泵如下：,XBD9.5/30-L100-280Q=30L/sH=0.95MpaN=75kw，单出口泵,,,,,

,,基础尺寸1250*1250（有隔振安装）,,,,,

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