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一、使用整流器的目的用于管流流量测量的大部分流量计,例如涡轮式、节流式(包括差压式、变截面式和环形开孔式)、卡门涡冲式等等,对流量计上游的流速分布型式都是敏感的。特别是变差压式节流装置,原则上要求在节流装置安装位置上游1D 处已达到充分发展的紊流流速分布,才能引用国际规定的流量系数数值。为此国际标准化组织第30技术委员会
The purpose of the use of rectifier flowmeter for the majority of flow measurement, such as turbo, throttling (including differential pressure, variable cross-section and annular open-hole), Carmen eddy current, etc., the flow The upstream velocity distribution pattern is sensitive. In particular, variable-pressure throttling devices, in principle, require that the fully developed turbulent flow velocity distribution be reached at 1D upstream of the throttling device location in order to be able to reference the value of the international traffic regulations. To this end the 30th International Technical Organization Technical Committee