水管管徑壓力與流速確定后管道流量表

1、管徑(dn)流量 m3/h0.4m/s0.6m/s0.8m/s1.0m/s1.2m/s1.4m/s1.6m/s1.8m/s2.0m/s2.2m/s2.4m/s2.6m/s2.8m/s3.0m/s200.50.70.91.11.41.61.82.02.32.52.72.93.23.4250.71.11.41.82.12.52.83.23.53.94.24.64.95.3321.21.72.32.93.54.14.65.25.86.46.97.58.18.7401.82.73.64.55.46.37.28.19.010.010.911.812.713.6502.84.25.77.18.59.911

2、.312.714.115.617.018.419.821.2654.87.29.611.914.316.719.121.523.926.328.731.133.435.8807.210.914.518.121.725.329.032.636.239.843.447.050.754.310011.317.022.628.333.939.645.250.956.562.267.973.579.284.812517.726.535.344.253.061.970.779.588.497.2106.0114.9123.7132.515025.438.250.963.676.389.1101.8114.

3、5127.2140.0152.7165.4178.1190.920045.267.990.5113.1135.7158.3181.0203.6226.2248.8271.4294.1316.7339.325070.7106.0141.4176.7212.1247.4282.7318.1353.4388.8424.1459.5494.8530.1300101.8152.7203.6254.5305.4356.3407.1458.0508.9559.8610.7661.6712.5763.4350138.5207.8277.1346.4415.6484.9554.2623.4692.7762.08

4、31.3900.5969.81039.1400181.0271.4361.9452.4542.9633.3723.8814.3904.8995.31085.71176.21266.71357.2450229.0343.5458.0572.6687.1801.6916.11030.61145.11259.61374.11488.61603.21717.7500282.7424.1565.5706.9848.2989.61131.01272.31413.71555.11696.51837.81979.22120.6, 600407.1610.7814.31017.91221.41425.01628

5、.61832.22035.72239.32442.92646.52850.03053.6一定管路直徑之最大流量限制(液體)管路直徑（mm） 最大流量（l/s） 最大流量（t/h） 最大流速（m/s）25   1  3.6  2.0438  2.5 9  1.6950  4.17 15  2.1265  6.67 24  2.0175 &#

6、160;10.0 36  2.26100  18.4 66  2.33125  30.0 108  2.41水管管徑、壓力與流速確定后，管道流量表一般工程上計(jì)算時(shí)，水管路，壓力常見為0.1-0.6mpa，水在水管中流速在1-3米/秒，常取1.5米/秒。 （以下為經(jīng)驗(yàn)公式）流量=管截面積×流速=0.002827×管徑2×流速(立方米/小時(shí))2：平方。管徑單位：mm 管徑=sqrt(353.68×流量÷流速) sqrt：開平方 飽和蒸汽的公式與水相同，只是流速一般取20-40米/秒。 如果需要精確計(jì)算就要先假定流速，再根據(jù)水的粘度、密度及管徑先計(jì)算出雷諾準(zhǔn)數(shù)，再由雷諾準(zhǔn)數(shù)計(jì)算出沿程阻力系數(shù)，并將管路中的管件（如三通、彎頭、閥門、變徑等）都查表查出等效管長度，最后由沿程阻力系數(shù)與管路總長（包括