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一、问题的提出大口径煤气流量计量的主要难点一般为:(1)介质脏污、检测件易堵塞、易结垢。(2)管道口径大,现场管道结构复杂,并且往往直管段不足。(3)煤气流速低;管道平均流速大多数都在10m/s以下,甚至低到(1~3)m/s。二、系统构成1.FJP系列测管式流量计测量原理FJP系列测管式流量计(基于皮托-静压管原理)的测量管插入煤气管道,测量管测头测量插入点煤气流速,然后通过配套流量计算机计算出管道内的煤气
First, the issue raised Large-diameter gas flow measurement of the main difficulties are generally: (1) media dirty, easy to plug the test piece, easy scaling. (2) large pipe diameter, on-site pipeline structure is complicated, and often not enough straight pipe. (3) gas flow rate is low; most of the average pipeline velocity is below 10m / s, even as low as (1 ~ 3) m / s. Second, the system structure 1.FJP series measuring tube flowmeter measuring principle FJP series measuring tube flowmeter (based on Pitot - static pressure tube principle) measuring tube into the gas pipeline, measuring tube probe measuring point gas flow rate, and then Through the matching flow computer to calculate the pipeline gas