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本文根据在直径ф100毫米的管道内对标准孔板的试验结果,讨论了环室结构,如:环室开孔直径较管道内径大或小对流量测量的影响;环室的环腔与管道连通方式不同对流量测量的影响。同时,还讨论了法兰取压孔板其取压孔在管道内的出口处有无毛刺对流量测量的影响。在孔板安装条件方面,讨论了角接取压孔板和法兰取压孔板与管道不同轴度大小以及在 90°弯头后直管段长度仅有20D、10D、5D时对流量测量的影响等。
In this paper, according to the test results of a standard orifice in a pipe of ф100mm in diameter, the structure of the ring chamber is discussed. For example, the influence of the diameter of the ring chamber orifice on the flow measurement is larger or smaller than that of the pipe diameter; The impact of different ways on the flow measurement. At the same time, also discussed the flange orifice plate orifice of its pressure in the pipeline at the exit of the glitch on the flow measurement. In the orifice installation conditions, discussed the angular access to the orifice plate and the flange orifice plate and the pipe of different axial size and straight pipe length after 90 ° elbow length of only 20D, 10D, 5D when the flow measurement Influence and so on.