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1. 发明授权

US5493915A Fluid dynamic torsional vortex sensor 失效
标题翻译：流体动力学扭转涡流传感器
公开(公告)号：US5493915A
公开(公告)日：1996-02-27
申请号：US282552
申请日：1994-07-29
申请人： Syok S. Lew , Yon S. Lew , Yon K Lew
发明人： Syok S. Lew , Yon S. Lew , Yon K Lew
IPC分类号： G01F1/32
CPC分类号： G01F1/3263
摘要： A torsional vortex sensor comprises an extended member disposed across a flow passage extending through a flowmeter body and experiencing a fluctuating fluid dynamic force associated with vortex shedding occurring in a stream of fluid moving through the flow passage wherein the extended member is supported by the flowmeter body in a relationship allowing at least a minute amount of pivotal movement of the extended member about a pivot axis perpendicular to the center line of the flow passage and offset from the geometrical center line of the extended member defined by a line connecting the geometrical center of every cross section of the extended member taken parallel to a plane including the center line of the flow passage, and at least one lateral extension member disposed exteriorly to the flow passage and extending from the extended member wherein the lateral extension member is connected to two force transmitting members respectively extending from two piezo electric transducers disposed respectively on two opposite sides of a plane including the pivot axis; wherein the two piezo electric transducers respectively generate two electrical signals which are combined into an alternating electrical signal representing the vortex shedding.
摘要翻译：扭转涡流传感器包括延伸部件，该延伸部件跨越流动通道设置，该流动通道延伸穿过流量计本体并且经历与通过流动通道移动的流体流中发生的涡流脱落相关联的波动的流体动力，其中延伸部件由流量计主体该关系允许延伸构件绕垂直于流动通道的中心线的枢转轴线的至少少量的枢转运动，并且从由连接每个的每个的几何中心的线限定的延伸构件的几何中心线偏移所述延伸构件的横截面平行于包括所述流动通道的中心线的平面，以及设置在所述流动通道外部并从所述延伸构件延伸的至少一个侧向延伸构件，其中所述横向延伸构件连接到两个力传递成员分别从两个压电换能器延伸d 分别设置在包括枢转轴线的平面的两个相对侧上; 其中两个压电换能器分别产生两个电信号，其被组合成代表涡流脱落的交流电信号。

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