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1、.-管径管径/流速流速/流量对照表流量对照表管径管径流量流量 m3/hm3/h(DN(DN0.4m/)202532405065801001250.6m/s0.71.11.72.74.27.210.917.026.50.8m/s0.91.42.33.65.79.614.522.635.31.0m/s1.11.82.94.57.111.918.128.344.21.2m/s1.42.13.55.48.514.321.733.953.01.4m/s1.62.54.16.39.916.725.339.661.91.6m/s1.82.84.67.211.319.129.045.270.71.8m/s2.
2、03.25.28.112.721.532.650.979.52.0m/s2.33.55.89.014.123.936.256.588.42.2m/s2.53.96.410.015.626.339.862.297.22.4m/s2.74.26.910.917.028.743.467.9106.02.6m/s2.94.67.511.818.431.147.073.5114.92.8m/s3.24.98.112.719.833.450.779.2123.73.0m/s3.45.38.713.621.235.854.384.8132.5s0.50.71.21.82.84.87.211.317.7.-可
3、修编.-15020025030035040045050060025.445.270.7101.8138.5181.0229.0282.7407.138.267.9106.0152.7207.8271.4343.5424.1610.750.990.5141.4203.6277.1361.9458.0565.5814.363.6113.1176.7254.5346.4452.4572.6706.91017.976.3135.7212.1305.4415.6542.9687.1848.21221.489.1158.3247.4356.3484.9633.3801.6989.61425.0101.81
4、81.0282.7407.1554.2723.8916.11131.01628.6114.5203.6318.1458.0623.4814.31030.61272.31832.2127.2226.2353.4508.9692.7904.81145.11413.72035.7140.0248.8388.8559.8762.0995.31259.61555.12239.3152.7271.4424.1610.7831.31085.71374.11696.52442.9165.4294.1459.5661.6900.51176.21488.61837.82646.5178.1316.7494.871
5、2.5969.81266.71603.21979.22850.0190.9339.3530.1763.41039.11357.21717.72120.63053.6管径(DN)闭式系统流速推荐值流速推荐值 m/s:m/s:200.5-0.6250.6-0.7320.7-0.9400.8-1500.9-1.2651.1-1.4801.2-1.61001.3-1.81251.5-2.01501.6-2.22001.8-2.52501.8-2.63001.9-2.93501.6-2.54001.8-2.6.-可修编.-开式系统0.4-0.50.5-0.60.6-0.80.7-0.90.8-1.00.9-1.21.1-1.41.2-1.61.4-1.81.5-2.01.6-2.31.7-2.41.7-2.42.1 管道内各种介质常用流速X 围管道内各种介质常用流速X 围见表 2.1。表中管道的材质除注明外，一律为钢。该表中流速为推荐值。2.2 管道压力降控制值管道压力降控制值见表2.21 和表 2.22。该表中压力降值为推荐值。.-可修编.-.-可修编.-.-可修编.-.-可修编.-.-可修编.-.-可修编.-.-可修编.-可修编.-.-可修编.-.-可修编.-.-可修编.-.-可修编.