公开(公告)号：US5433117A

公开(公告)日：1995-07-18

申请号：US92258

申请日：1993-07-15

申请人： Werner Taphorn ,  Alf Zips ,  Manfred Bunnemeyer ,  Veit Middelberg ,  Andreas Kammerahl

发明人： Werner Taphorn ,  Alf Zips ,  Manfred Bunnemeyer ,  Veit Middelberg ,  Andreas Kammerahl

IPC分类号： G01F1/66 ,  G01F15/00

CPC分类号： G01F15/00 ,  G01F1/662

摘要： The meter has a housing with an inlet and an outlet. The housing is divided between the inlet and the outlet by a partition wall through which a measuring tube with a rectangular cross-section passes. Gas flows through the measuring tube, through which ultrasonic pulses are simultaneously transmitted by transducers disposed on the end walls. The flow rate of the gas is determined from the difference in the time of flight of the bidirectional sound pulses. The gas is directed into the measuring tube through two guidance ducts which run along both longitudinal sides of the measuring tube. Said guidance ducts are also rectangular in cross-section and each contain a flow rectifier.

摘要翻译： 仪表有一个带入口和出口的外壳。 壳体通过分隔壁在入口和出口之间分隔开，具有矩形横截面的测量管穿过该分隔壁。 气体流经测量管，超声波脉冲通过设置在端壁上的换能器同时传输。 气体的流量由双向声音脉冲的飞行时间差确定。 气体通过沿着测量管的两个纵向侧延伸的两个导向管道被引导到测量管中。 所述引导管的横截面也是矩形，并且每个都包含流动整流器。

公开(公告)号：US06338277B1

公开(公告)日：2002-01-15

申请号：US09202039

申请日：1998-12-04

申请人： Andrew Stephen Diston ,  Christopher James Newton Fryer ,  Andreas Kammerahl

发明人： Andrew Stephen Diston ,  Christopher James Newton Fryer ,  Andreas Kammerahl

IPC分类号： G01F100

CPC分类号： G01F1/662

摘要： A flowmeter for a medium includes two transducers displaced from each other in the direction of flow of the medium. The flowmeter contains an emitting device which emits acoustic signals in both directions through the medium using the transducer. The flowmeter also contains a processing device for determining information via the flow of the medium by monitoring the travel times of the acoustic signals received by the transducers. A part of the space between the transducers defines a flow path which includes a flow structure with at least one medium flow passage extending axially in the direction of the flow of the medium. The medium flow passage has damping devices which are located so that at least one asymmetrical noise propagation mode is damped. The damping device has a damping structure which extends substantially across the whole length of the media flow passage.

摘要翻译： 用于介质的流量计包括在介质流动方向上彼此移位的两个换能器。 该流量计包含一个发射装置，它使用换能器通过介质在两个方向上发出声信号。 流量计还包括处理装置，用于通过监测由换能器接收的声信号的行进时间来通过介质的流动来确定信息。 换能器之间的空间的一部分限定了流动路径，其包括流动结构，该流动结构具有沿介质流动方向轴向延伸的至少一个介质流动通道。 介质流路具有阻尼装置，其被定位成使得至少一个非对称噪声传播模式被阻尼。 阻尼装置具有基本上横跨介质流动通道的整个长度延伸的阻尼结构。