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1、计算原理参照自动喷水灭火系统设计规范GB 50084-2001（2005年版） 基本计算公式：1、喷头流量：q = K ；10P式中：q 喷头处节点流量，L/minP -喷头处水压（喷头工作压力）MPaK - 喷头流量系数2、流速 V：4qV =xhn D 2j式中：Q -管段流量L/sD.-管道的计算内径（m）j3、水力坡降：i = 0.00107v2d1.3j式中：i -每米管道的水头损失（mH20/m）V -管道内水的平均流速（m/s）d.-管道的计算内径（m）,取值应按管道的内径减1 mm确定.4、沿程水头损失：h = i x L沿程式中： L - 管段长度 m5、局部损失（采用当量长
2、度法）：h = i x L （当量）局部式中：L（当量）-管段当量长度，单位m（自动喷水灭火系统设计规范附录C）6、总损失：h = h+h局部 沿程7、终点压力：h = h + hn +1n管段名称起点压力 mH2O管道流量L/s管长m当量 长度管径mmK水力坡降mH2O/m流速m/s损失mH2O终点压力mH2O1-27.001.112.400.6025800.5392.091.628.622-38.622.340.441.5025802.3984.424.6413.263-413.262.340.910.6025802.3984.423.6216.884-516.882.341.640.80
3、25802.3984.425.8622.7426-520.131.880.870.8025801.5493.552.5922.725-622.744.230.571.8032801.6774.463.9726.716-726.714.232.401.4032801.6774.466.3833.0927-2819.291.840.180.6025801.4853.471.1620.4528-2920.451.841.870.8025801.4853.473.9624.4129-3024.413.920.962.1032801.4414.134.4228.8331-3220.401.900.240
4、.6025801.5703.571.3121.7132-3321.711.901.860.2025801.5703.573.2424.9533-3024.953.990.492.1032801.4974.213.8728.8230-728.837.912.553.6050800.6943.734.2733.107-833.0912.143.754.3065800.4263.443.4336.5334-3521.671.962.400.6025801.6683.685.0026.6835-3626.684.120.442.4040800.7573.282.1528.8336-3728.834.1
5、20.901.2040800.7573.281.5930.4137-3830.414.121.711.5040800.7573.282.4332.8540-3828.002.220.800.6025802.1554.193.0231.0238-3932.856.350.553.1050800.4462.991.6334.4839-834.486.352.332.1050800.4462.991.9836.458-936.5318.492.225.4080800.3993.723.0439.5741-4233.982.453.501.2032800.5622.582.6436.6242-4336
6、.624.992.293.6050800.2762.351.6238.2444-4526.142.153.500.6025802.0124.048.2534.3945-4334.394.611.212.9040800.9463.673.8938.2843-938.249.600.474.5065800.2662.721.3239.579-1039.5728.092.286.10100800.2113.241.7741.3346-4733.032.412.401.5040800.2591.921.0134.0447-4834.044.860.443.1050800.2622.290.9334.9
7、748-4934.974.860.981.5050800.2622.290.6535.6249-5035.624.861.711.5050800.2622.290.8436.4752-5028.002.220.800.6025802.1554.193.0231.0250-5136.477.090.583.1050800.5563.342.0538.5151-1038.517.092.332.3050800.5563.342.5841.0910-1141.3335.181.976.10100800.3314.062.6744.0011-1244.0035.182.953.10100800.331
8、4.062.0046.0012-1346.0035.181.843.10100800.3314.061.6347.6353-5444.682.812.072.0050800.0871.320.3645.0454-5545.045.630.333.7065800.0921.600.3745.4155-5645.415.631.481.8065800.0921.600.3045.7158-5628.002.220.900.6025802.1554.193.2431.2456-5745.717.850.943.7065800.1782.230.8346.5357-1346.537.852.392.6
9、065800.1782.230.8947.4213-1447.6343.033.436.10100800.4954.974.7152.3514-1552.3543.031.241.10100800.4954.971.1653.5159-6028.002.223.400.6025802.1554.198.6236.6260-6136.622.221.701.5025802.1554.196.9043.5261-1543.522.220.530.0025802.1554.191.1544.6615-1653.5145.253.247.60125800.1763.411.9155.4216-1755
10、.4245.252.070.00125800.1763.410.3755.7817-1855.7845.253.880.00125800.1763.410.6856.4718-1956.4745.254.050.00125800.1763.410.7157.1819-2057.1845.251.950.00125800.1763.410.3457.5320-2157.5345.252.360.00125800.1763.410.4257.9421-2257.9445.252.310.00125800.1763.410.4158.3522-2358.3545.253.300.00125800.1763.410.5858.9323-2458.9345.252.100.00125800.1763.410.3759.3024-2559.3045.250.510.00125800.1763.410.0959.39计算结果:所选作用面积:171.6 平方米总流量:45.25 L/s平均喷水强度：15.82 L/min .平方米入口压力:59.39 米水柱
