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1. 发明授权

US4448081A Method and device for the dynamic and density-independent determination of mass flow 失效
标题翻译：用于动态和密度独立确定质量流量的方法和装置
公开(公告)号：US4448081A
公开(公告)日：1984-05-15
申请号：US295021
申请日：1981-08-21
申请人： Jorg Kolitsch , Norbert Sparwell , Eugen Brockmann
发明人： Jorg Kolitsch , Norbert Sparwell , Eugen Brockmann
IPC分类号： G01F1/28 , G01F1/32 , G01F1/86
CPC分类号： G01F1/3218 , G01F1/28 , G01F1/86
摘要： Method for the dynamic and density-independent determination of the mass flow of fluids. A single vortex generating bluff body is placed in the flow to generate vortices according to the principle of the Karman vortex path. The dynamic pressure (1/2.rho.v.sup.2) is determined via the effect of the drag directly at this bluff body. The velocity of flow (v) is determined via the effect of the vortex shedding at the bluff body. The mass flow is determined according to the equation:m=2.multidot.(1/2.rho.v.sup.2).multidot.1/2.multidot.Awherein A is the cross section of the flow channel.Device for implementing such method. The device consists essentially of a vortex-generating bluff body having one or two fixed ends, which itself serves as a transducer or at which one or two transducers are provided. An electronic system for processing the resultant signal is available.
摘要翻译：用于动态和密度独立确定流体质量流量的方法。根据卡曼涡道的原理，将单个产生涡流的单体涡流体放置在流中以产生涡流。动态压力（1/2 rho v2）通过直接在这个虚张声势的身体上的拖动效果来确定。流速（v）通过涡流脱落在虚张体上的作用来确定。质量流量根据以下等式确定：m = 2x（1/2 rho v2）x1 / 2xA其中A是流动通道的横截面。用于实现这种方法的设备。该装置基本上由具有一个或两个固定端的涡流产生非流线形本体组成，其本身用作换能器或设置有一个或两个换能器。用于处理结果信号的电子系统是可用的。

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