矩形堰流量槽.doc

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1、矩形堰矩形堰可按图十八加工。水位-流量对应关系如表二、三、四、五。矩形堰的水位-流量关系主要取决于堰口宽的“b”。也与上游渠道宽“B”和堰坎高“p”有关。如使用图十八的矩形堰，可以在参数表“液位-流量对应表”][1/55]“堰槽种类”内选“250矩形堰”、“500矩形堰”等。仪表内已有水位流量表。图十八、矩形堰的构造表二0.25m矩形堰水位流量对应表水位单位：m流量单位：L/s水位0.0000.0100.0200.0300.0400.0500.0600.0700.0800.090流量0.00000.44281.25462.30863.56044.98416.

2、56278.283810.13812.117水位0.1000.1100.1200.1300.1400.1500.1600.1700.1800.190流量14.21516.42718.74921.17523.70426.33229.05631.87534.78537.786水位0.2000.2100.2200.2300.2400.2500.2600.2700.2800.290流量40.87544.05047.31150.65554.08257.591----表三0.5m矩形堰水位流量对应表水位单位：m流量单位：L/s水位0.0000.0100.0200.030

3、0.0400.0500.0600.0700.0800.090流量0.00000.88402.50634.61527.12229.976913.14616.60420.33324.319水位0.1000.1100.1200.1300.1400.1500.1600.1700.1800.190流量28.54833.01237.70042.60747.72653.05158.57664.29970.21476.318水位0.2000.2100.2200.2300.2400.2500.2600.2700.2800.290流量82.60889.08095.733102.

4、56109.57116.75124.10131.62139.31147.16水位0.3000.3100.3200.3300.3400.3500.3600.3700.3800.390流量155.18---------表四0.75m矩形堰水位流量对应表水位单位：m流量单位：L/s水位0.0000.0200.0400.0600.0800.1000.1200.1400.1600.180流量0.00003.769810.72919.83430.72543.20357.13972.44189.040106.88水位0.2000.2200.2400.2600.2800.3

5、000.3200.3400.3600.380流量125.93146.15167.50189.98213.55238.21263.93290.71318.54347.40水位0.4000.4200.4400.4600.4800.5000.5200.5400.5600.580流量377.30408.22440.16473.11507.08542.05----表五1m矩形堰水位流量对应表水位单位：m流量单位：L/s水位0.0000.0200.0400.0600.0800.1000.1200.1400.1600.180流量0.00004.997814.19826.1

6、9640.50556.85275.05494.982116.54139.65水位0.2000.2200.2400.2600.2800.3000.3200.3400.3600.380流量164.25190.28217.72246.52276.64308.07340.78374.75409.96446.40水位0.4000.4200.4400.4600.4800.5000.5200.5400.5600.580流量484.05522.90562.94604.16646.55690.10----图、矩形堰安在渠道上矩形堰安装在渠道上如图十九。堰板要竖直，要安在渠道的

7、中轴线上。仪表的探头安装在距堰板0.5m～1m的位置。注意：堰板要够硬度，耐腐蚀；水流排出时需要有一定的落差，否则会影响流量的精度