自動(dòng)噴水滅火系統(tǒng)的計(jì)算書(shū)

自動(dòng)噴水滅火系統(tǒng)的計(jì)算書(shū)1.自動(dòng)噴水滅火水力計(jì)算的基本數(shù)據(jù)1.1噴頭的選擇《自動(dòng)噴灑滅火系統(tǒng)設(shè)計(jì)規(guī)范》，閉式濕式自動(dòng)噴水滅火系統(tǒng)適用范圍：因管網(wǎng)及噴頭中充水,故適用于環(huán)境溫度為4?700C之間的建筑物內(nèi)，所以選用閉式濕式噴頭。1.2根據(jù)濕式系統(tǒng)、預(yù)作用系統(tǒng)不宜超過(guò)800只；本系統(tǒng)設(shè)四個(gè)濕式報(bào)警閥，每個(gè)報(bào)閥組控制的最不利噴頭處，都設(shè)末端試水裝置，每層最不利噴頭處均設(shè)直徑為25mm的試水閥。1.31.3水力計(jì)算查高規(guī)，選用邊墻型擴(kuò)展覆蓋噴頭工作壓力O.IMpa為噴頭最低工作壓力，自動(dòng)噴水滅火系統(tǒng)的基本設(shè)計(jì)數(shù)據(jù)見(jiàn)下表：火災(zāi)危險(xiǎn)等級(jí)設(shè)計(jì)噴水強(qiáng)度[L/(min?m2)]作用面積/m2噴頭工作壓力/MPa設(shè)計(jì)噴量/(L/s)噴頭間距/m每支噴頭最大保護(hù)面積/m2噴頭與墻柱最大間距/m中危險(xiǎn)I級(jí)61600.129.453.611.51.8.標(biāo)準(zhǔn)噴頭：選用ZSTZ-15型快速響應(yīng)噴頭邊墻型擴(kuò)展覆蓋噴頭：選用ZSTYB-20型快速響應(yīng)噴頭，工作壓力0.1，保護(hù)范圍4.4X4.5m標(biāo)準(zhǔn)型噴頭管徑確定如下表表3-19自動(dòng)噴灑管徑確定表噴頭數(shù)1348123264公稱直徑(mm)DN25DN32DN40DN50DN70DN80DN1004)水力計(jì)算下圖為自動(dòng)噴水水力計(jì)算簡(jiǎn)圖

壬DN25o10■■35口, 一ELT壬DN25o10■■35口, 一ELT「汕1匚三F表為自動(dòng)噴水水力計(jì)算表管段名稱起點(diǎn)壓力mH2O管道流量L/s管長(zhǎng)m當(dāng)量長(zhǎng)度管徑mmK水力坡降mH20/m流速m/s損失mH2O終點(diǎn)壓力mH2O1-210.001.911.320.60251151.5913.603.0513.052-313.051.911.180.8025801.5913.603.1416.2021-2211.092.010.940.60251151.7653.792.7113.8122-313.812.010.540.8025801.7653.792.3616.173-416.203.921.402.1032801.4414.135.0521.2423-418.591.811.220.6025801.4313.412.6021.2024-419.841.870.340.6025801.5273.521.4421.294-521.247.601.943.1050800.6403.583.2324.4725-2616.881.732.250.8025801.2993.253.9620.8426-520.843.640.752.1032801.2443.843.5424.3827-519.531.862.650.6025801.5033.504.8924.425-624.4713.100.433.1050801.9016.176.7131.186-731.1813.101.220.0050801.9016.172.3133.497-833.4913.102.722.1050801.9016.179.1642.658-942.6513.104.230.0080800.2002.640.8543.5028-2914.662.311.320.60251152.3324.354.4819.1429-3019.142.310.930.8025802.3324.354.0323.1733-3415.472.370.940.60251152.4604.473.7819.2534-3019.252.370.780.8025802.4604.473.9023.15

30-3123.174.691.382.1032802.0604.947.1830.3435-3126.722.171.170.6025802.0574.093.6330.3536-3128.132.230.390.6025802.1654.202.1530.2731-3230.349.081.943.1050800.9144.284.6134.9537-3229.062.262.010.6025802.2374.265.8334.8938-3230.312.311.390.6025802.3334.364.6534.9632-934.9513.660.443.7050802.0676.438.5543.509-1043.5026.765.625.4080800.8365.399.2152.7110-1152.7126.761.840.00100800.1913.090.3553.0639-1140.002.661.761.4032800.6622.802.0942.0911-1253.0629.422.656.10100800.2313.402.0255.0912-1355.0929.421.831.10100800.2313.400.6855.7713-1455.7729.420.470.00125800.0752.220.0355.8014-1555.8029.420.023.70125800.0752.220.2856.0815-1656.0829.423.060.00125800.0752.220.2356.3116-1756.3129.422.953.70125800.0752.220.5056.8017-1856.8029.420.630.00125800.0752.220.0556.8518-1956.8529.424.703.70125800.0752.220.6357.4719-2057.4729.420.690.00125800.0752.220.0557.53計(jì)算結(jié)果：所選作用面積：160?（平方米總流量:29.42L/s平均噴水強(qiáng)度：11.03L/mi平方米入□壓力：57.53米水柱水泵揚(yáng)程為：、 hH=Hr+Hz+報(bào)警閥損失+1.1X =7.43+61+5+2+57.57=133.米水柱Hr入□壓力Hz水泵吸入□至入□靜水壓（按本工程確定層高計(jì)算為61m）h水泵吸入□至入□沿程及局部水頭損失（管道長(zhǎng)度+當(dāng)量長(zhǎng)度=195m,按干管管徑選用DN150計(jì)算）7.43米水柱報(bào)警閥水頭損失取0.04Mpa,水流指示器取0.02Mpa,

筑2—10萬(wàn)案一下圖為自動(dòng)噴水水力計(jì)算簡(jiǎn)圖匚:IO—r11IS:眄廠丨1十曬系畝口筑2—10萬(wàn)案一下圖為自動(dòng)噴水水力計(jì)算簡(jiǎn)圖匚:IO—r11IS:眄廠丨1十曬系畝口s",s作月面枳：150m2管段名稱起點(diǎn)壓力mH2O管道流量L/s管長(zhǎng)m當(dāng)量長(zhǎng)度管徑mmK水力坡降mH2O/m流速m/s損失mH2O終點(diǎn)壓力mH2O1-210.001.911.320.90321150.3422.010.7610.762-310.761.911.181.2032800.3422.010.8111.5721-2210.311.940.940.90321150.3532.040.6510.9622-310.961.940.541.2032800.3532.040.6111.573-411.573.851.402.7040800.6593.062.7014.2723-412.501.481.220.6025800.9622.801.7514.2524-413.281.530.340.6025801.0222.880.9614.254-514.276.861.943.1050800.5223.232.6316.9025-2611.721.442.250.8025800.9022.712.7514.4726-514.473.040.752.1032800.8643.202.4616.9327-513.591.552.650.6025801.0462.923.4017.005-616.9011.450.433.1050801.4515.395.1322.036-722.0311.451.220.0050801.4515.391.7623.797-823.7911.452.722.1050801.4515.396.9930.788-930.7811.454.230.0080800.1532.310.6531.4328-2914.722.321.320.90321150.5032.441.1215.83

29-3015.832.320.931.2032800.5032.441.0716.9033-3415.002.340.940.90321150.5132.470.9415.9434-3015.942.340.781.2032800.5132.471.0216.9630-3116.904.651.382.7040800.9643.703.9420.8435-3118.281.801.170.6025801.4073.382.4920.7736-3119.381.850.390.6025801.4913.481.4820.8631-3220.848.301.943.1050800.7633.913.8524.6837-3220.631.912.010.6025801.5883.594.1424.7638-3221.411.941.390.6025801.6483.663.2824.6932-924.6812.150.443.7050801.6355.726.7631.459-1031.4323.605.625.4080800.6504.757.1638.6010-1138.6023.601.840.00100800.1492.730.2738.8739-1136.882.551.761.4032800.6102.691.9338.8011-1238.8726.152.656.10100800.1833.021.6040.4712-1340.4726.151.831.10100800.1833.020.5341.0013-1441.0026.150.470.00125800.0591.970.0341.0314-1541.0326.150.023.70125800.0591.970.2241.2515-1641.2526.153.060.00125800.0591.970.1841.4316-1741.4326.152.953.70125800.0591.970.3941.8217-1841.8226.150.630.00125800.0591.970.0441.8618-1941.8626.154.705.00125800.0591.970.5742.4319-2042.4326.150.690.00150800.0231.390.0242.45計(jì)算結(jié)果：所選作用面積:160.0平方米總流量:26.15L/s平均噴水強(qiáng)度：9.81L/min.平方米入口壓力:42.45米水柱水泵揚(yáng)程為：H=Hr+Hz+報(bào)警閥損失+1.1X7.43+69.6+1.5+2+42.45=122.95米水柱Hr入口壓力Hz水泵吸入口至入口靜水壓（按本工程確定層高計(jì)算為69.6m,水池在地下一層）Sh水泵吸入口至入口沿程及局部水頭損失（管道長(zhǎng)度+當(dāng)量長(zhǎng)度=195m,按干管管徑選用DN150計(jì)算）7.43米水柱(3-25)報(bào)警閥壓力損失叮10BQ2⑷(3-25)式中Hk—報(bào)警閥壓力損失，KPa；kBkl—報(bào)警閥的阻力系數(shù)，DN150濕式報(bào)警閥，Bkl=0.000869kl klH=0.000869Q2x10k=0.000869x(41.12)2x10=14.69kpa=1.469mHO2水流指示器取0.02Mpa,比較兩方案因方案一，所計(jì)算水泵揚(yáng)程超出原噴淋泵揚(yáng)程,故選用方案二所確定的噴淋管徑。減壓孔板計(jì)算：7.43/169*cg*3=0.13為每層水損Cg：層高孔板為：1773mm16:64mm15:59mm14:5513:5312:5111:4910:48TOC\o"1-5"\h\z9 :468 :457 :446 :435 :434 :423 :402 :391 :38-1: