Measuring system for media which flow in a tube conduit

用于管道中流动的介质的测量系统

Abstract

本发明的测量系统包括:振动型测量换能器,所述振动型测量换能器在运行期间有介质流过,并用于根据流动介质的粘度和/或流动介质的雷诺数产生振荡信号;和电连接到所述测量换能器的变送器,所述变送器用于驱动所述测量换能器和评估所述测量换能器所传输的振荡信号。所述测量换能器包括:入口侧分流器(201),所述入口侧分流器具有四个彼此隔开的流通口(201A、201B、201C、201D);出口侧分流器(202),所述出口侧分流器具有四个彼此隔开的流通口(202A、202B、202C、202D);四个彼此平行的直测量管(181、182、183、184),所述四个彼此平行的直测量管用于传送流动介质,并连接到所述分流器(201、202),以形成具有用于平行流的至少四个流体通道的管装置;以及,电动激励机构(4),所述电动激励机构用于激励和保持所述测量管(181、182)的机械振荡。所述四个测量管的每一个都以入口侧测量管端通向所述入口侧分流器(201)的流通口(201A),以出口侧第二测量管端通向所述出口侧分流器(202)的流通口(202A),第三测量管以入口侧测量管端通向所述入口侧分流器(201)的流通口(201C),以出口侧第二测量管端通向所述出口侧分流器(202)的流通口(202C),第四测量管以入口侧测量管端通向所述入口侧分流器(201)的流通口(201D),以出口侧第二测量管端通向所述出口侧分流器(202)的流通口(202D)。所述变送器通过供往所述激励机构的电驱动信号将电激励功率馈送到所述激励机构,同时,所述激励机构将电激励功率至少部分地转化成所述第一测量管的扭转振荡(181)和所述第二测量管(182)的反向相等的扭转振荡,并且转化成所述第三测量管(183)和所述第四测量管(184)的反向相等的扭转振荡。
The measuring system of the invention comprises: a measuring transducer of vibration-type, through which medium flows during operation and which serves for producing oscillatory signals dependent on a viscosity of the flowing medium and/or a Reynolds number of the flowing medium; as well as a transmitter electronics electrically coupled with the measuring transducer for driven the measuring transducer and for evaluating oscillatory signals delivered by the measuring transducer. The measuring transducer includes: An inlet-side flow divider (201) having at least two, mutually spaced, flow openings (201A, 201B); an outlet-side flow divider (202) having at least two, mutually spaced, flow openings (202A, 202B); at least two, mutually parallel, straight, measuring tubes (181, 182) for conveying flowing medium, connected to the flow dividers (201, 202) for forming a tube arrangement having at least two flow paths for parallel flow; as well as an electromechanical exciter mechanism (4) for exciting and maintaining mechanical oscillations of the at least two measuring tubes (181, 182). Each of the at least two measuring tubes opens with an inlet-side measuring tube end into a flow opening (201A) of the inlet-side flow divider (201) and with an outlet-side, second measuring tube end into a flow opening (202A) of the outlet-side flow divider (202). The transmitter electronics feeds, by means of an electrical driver signal supplied to the exciter mechanism, electrical excitation power into the exciter mechanism, while the exciter mechanism converts electrical excitation power at least partially into opposite-equal torsional oscillations of the at least two measuring tubes (181, 182).

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