抽水试验中量水的堰箱,一般都很大(1×1×2米~3),里面还得放几个隔板,搬运安装都不方便,造价也高。同时堰箱中水面上下跳动,一般达1—2厘米,尤其是用压风机抽水更为显著,影响测量结果的准确性。为了克服以上缺点,我们对堰箱做了一些改装,经过试验(在没有分离器的条件下,用压风机抽水),效果较好。改装后比旧式堰箱小的多,一般0.8×1×1米~3(根据水量还可更小),请见附图)。新改装的三角堰,只是增添了一个清波器;和减 The amount of water in the pumping test weir box, are generally very large (1 × 1 × 2 m ~ 3), which had to put a few partitions, handling and installation are not convenient, the cost is high. At the same time the weir box in the water surface up and down beating, generally up to 1-2 cm, especially the use of compressed air pumping more significant impact on the accuracy of measurement results. In order to overcome the above shortcomings, we made some modifications to the weir box. After the test (without the separator conditions, using a forced draft fan), the effect is better. After the modification than the old weir box much smaller, usually 0.8 × 1 × 1 m ~ 3 (according to the amount of water can be smaller), see the figure). New modified triangular weir, just added a clear filter; and minus