抽水试验用孔板流量计是代替三角堰和梯形堰的测流工具,早在文化大革命前我院就进行过试验,但没有很好总结和推广,以致没有完善和定型。在批林批孔运动普及、深入、持久发展的大好形势鼓舞下,我们在朝阳工地分段取水试验中,又进一步试验和改进了孔板流量计,并取得了较好的效果。经我院召开的现 The orifice plate flow meter for pumping test is a measuring tool instead of trigonometric and trapezoidal. As far back as before the Cultural Revolution, our institute had conducted tests, but it has not been well summarized and promoted, so it has not been perfected and stereotyped. Inspired by the favorable situation of popularization, deepening and long-term development of the approved batches of forest boreholes, we have further tested and improved the orifice flowmeters in the phased water intake test of the Chaoyang site and achieved good results. Presented by our hospital