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第四章制造、安装和使用不符合标准的处理和误差一、说明经检验,节流装置在制造、安装和使用等方面若有一项或数项不符合上述的全部规定时,就不能直接采用本文在节流装置计算的章节中所提供的角接取压标准孔板及喷咀流量系数值。对于新制的节流件或运行后拆下检验的节流件以及管道条件等都可能有一项或数项不符合标准要求,为此可按以下方法进行处理。对于不符合标准要求的节流装置,若已有确切的实验数据,可逐项对标准流量系数α值进行修正,其方法是对α值乘以修正系数b,修正后的流量系数α_b 为:
Chapter IV Manufacturing, installation and use of substandard handling and error First, that the tested, throttling device in the manufacture, installation and use of such as one or more of the above does not meet all the requirements, you can not directly use In this paper, the calculation of the throttling device provided in the section of the corner access pressure standard orifice and nozzle flow coefficient values. There may be one or several non-standard requirements for the newly-created throttling pieces or the throttling pieces after inspection and removal of the pipeline, etc., and the following methods may be adopted for this purpose. For the throttling devices that do not meet the standard requirements, if the exact experimental data are available, the standard value of the flow coefficient α may be modified one by one by multiplying the α value by the correction factor b, and the corrected flow coefficient α_b is: