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一、概述 大管道低静压流量测量一直是自控设计的难题。一般来说,在大管道上装节流装置,只允许较小的压力损失。若装孔板流量计,往往压力损失较大。若采用大型文丘里管,则加工、安装困难。因此,都在寻求一种压损小,结构简单、安装维护方便的大管道流量测量装置。 我们在某冶炼厂烧结车间鼓风系统上装设了双翼均速管流量测量装置(上海自动化仪表一厂和上海自动化仪表研究所研制),
First, an overview Large hydrostatic pressure measurement of low pressure pipeline has been the problem of self-control design. In general, the throttle device installed in the large pipe, allowing only a small pressure loss. If the orifice plate flowmeter, pressure loss is often larger. If using a large venturi, processing, installation difficulties. Therefore, all are seeking a small pressure loss, simple structure, easy installation and maintenance of large pipe flow measurement device. We installed in a smelter blast furnace blasting system is equipped with a dual-wing mean-flow tube flow measurement device (Shanghai Automation Instrumentation Factory and Shanghai Institute of Automation Instrumentation)