一、前言目前,在化工、炼油、轻工、食品等工业生产过程中,所使用的孔板流量计均采用刚性孔板。本文讨论一种使用弹性孔板的流量计。所谓弹性孔板流量计,即是孔板材质采用弹性材料制成,其开孔直径可随流体流量改变而发生的变化的一种新型流量计。此种流量计不仅线性范围较广,而且低速流的测量精度较高以及高速流的压力损失较少。本文在此将着重分析关于此种流量计的设计 First, the preface At present, in the chemical industry, oil refining, light industry, food and other industrial processes, the use of the orifice flowmeter are used rigid orifice. This article discusses a flowmeter that uses a flexible orifice. The so-called flexible orifice flow meter, orifice material is made of elastic material, the opening diameter can change with the fluid flow changes in a new type of flow meter. This kind of flowmeter not only has a wider linear range, but also has higher measurement accuracy of low-speed flow and less pressure loss of high-speed flow. This article will focus on this analysis on the design of such flowmeter