P—B槽测定圆形下水道流量

APPLICATION STUDY OF THE FLUME IN SEWER FLOW MEASUREMENT

P—B槽是临界流式流量计的一种,其流量Q可表达为喉管上游水深h_1的高次隐函数。采用牛顿切线法并运用电子计算机,可方便地求得流量Q。P—B槽最适用于圆形重力流下水管道的流量连续测定,具有广泛的应用前景。

P-B flume is one of the flowmeters of critical flow type. The flow Q can be expressed as a higher order implicit function of the upflow depth h of the throat. The flow can be easily calculated by using the Newton Tangent Method with a computer. P-B flume is most suitable for measuring continuous flow of gravity flow in the sewer,so it has a bright future of wide application.