公开(公告)号：US07017424B2

公开(公告)日：2006-03-28

申请号：US10431573

申请日：2003-05-08

申请人： Alfred Rieder ,  Wolfgang Drahm

发明人： Alfred Rieder ,  Wolfgang Drahm

IPC分类号： G01F1/84 ,  G01N11/10

CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/849 ,  G01N9/002 ,  G01N11/167 ,  G01N2203/0025 ,  G01N2203/0094 ,  G01N2203/0676

摘要： To conduct a fluid, the transducer has a flow tube which in operation is vibrated by an excitation assembly and whose inlet-side and outlet-side vibrations are sensed by means of a sensor arrangement. To produce shear forces in the fluid, the flow tube is at least intermittently excited into torsional vibrations about a longitudinal flow-tube axis. The transducer further comprises a torsional vibration absorber which is fixed to the flow tube and which in operation covibrates with the torsionally vibrating flow tube, thus producing reactive torques which at least partially balance torques developed in the vibrating flow tube. One of the advantages of the transducer disclosed is that it is dynamically balanced to a large extent even in the face of variations in fluid density or viscosity.

公开(公告)号：US07010989B2

公开(公告)日：2006-03-14

申请号：US11006660

申请日：2004-12-08

申请人： Alfred Rieder ,  Wolfgang Drahm

发明人： Alfred Rieder ,  Wolfgang Drahm

IPC分类号： G01F1/84

CPC分类号： G01F1/8409 ,  G01F1/8418 ,  G01F1/849

摘要： To conduct a fluid, the transducer has a flow tube which in use is vibrated by an excitation system and whose inlet-side and outlet-side vibrations are detected by means of a sensor system. In response to transverse forces produced in the vibrating flow tube, the latter is, at least temporarily, laterally displaced from an assigned static rest position. To improve the dynamic balance of the transducer, a first cantilever and a second cantilever are rigidly fixed to an inlet-side tube section and an outlet-side tube section, respectively. By means of the cantilevers, the inlet-side and outlet-side tube sections are deformed as a result of lateral displacements of the flow tube. This produces counterforces which at least partially counterbalance the transverse forces produced in the vibrating flow tube. One advantage of the proposed transducer is that it is well balanced even during variations in fluid density.

公开(公告)号：US20060000293A1

公开(公告)日：2006-01-05

申请号：US11159363

申请日：2005-06-23

申请人： Alfred Rieder ,  Wolfgang Drahm

发明人： Alfred Rieder ,  Wolfgang Drahm

IPC分类号： G01F1/84

CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/8472 ,  G01F1/849

摘要： For conveying a fluid, the measuring transducer is equipped with a measuring tube, which is held oscillatably in a support element and vibrates during operation. The measuring tube executes, during operation, at least over part of its length, driven by an exciter arrangement, bending oscillations about an oscillation axis. These bending oscillations predominantly assume an oscillation form having at least three bending oscillation antinodes. Inlet-end and outlet-end oscillations are registered by means of a sensor arrangement. Additionally provided in the measuring transducer is a coupler arrangement connected with measuring tube and with support element and having at least one coupling element interacting mechanically, especially resiliently, with the vibrating measuring tube and the support element. By suitable choice of the effective spring constant, c60, of the coupler arrangement, this can cancel transverse forces produced, during operation, on the part of the vibrating measuring tube, for example due to fluctuating fluid density.

公开(公告)号：US06910366B2

公开(公告)日：2005-06-28

申请号：US10226242

申请日：2002-08-23

申请人： Wolfgang Drahm ,  Alfred Rieder

发明人： Wolfgang Drahm ,  Alfred Rieder

IPC分类号： G01N11/16 ,  G01N11/10

CPC分类号： G01N11/16 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/8431 ,  G01F1/8468 ,  G01F1/849 ,  G01N9/002 ,  G01N11/162 ,  G01N11/167 ,  G01N2009/006

摘要： The viscometer provides a viscosity value (Xη) which represents the viscosity of a fluid flowing in a pipe connected thereto. It comprises a vibratory transducer with at least one flow tube for conducting the fluid, which communicates with the pipe. Driven by an excitation assembly, the flow tube is vibrated so that friction forces are produced in the fluid. The viscometer further includes meter electronics which feed an excitation current (iexc) into the excitation assembly. By means of the meter electronics, a first internal intermediate value (X1) is formed, which corresponds with the excitation current (iexc) and thus represents the friction forces acting in the fluid. According to the invention, a second internal intermediate value (X2), representing inhomogeneities in the fluid, is generated in the meter electronics, which then determine the viscosity value (Xη) using the two intermediate values (X1, X2). The first internal intermediate value (X1) is preferably normalized by means of an amplitude control signal (yAM) for the excitation current (iexc), the amplitude control signal corresponding with the vibrations of the flow tube. As a result, the viscosity value (Xη) provided by the viscometer is highly accurate and robust, particularly independently of the position of installation of the flow tube.

摘要翻译： 粘度计提供粘度值（X'eta），其表示在与其连接的管道中流动的流体的粘度。 它包括具有至少一个用于传导流体的流管的振动换能器，其与管道连通。 由激励组件驱动，流管被振动，使得在流体中产生摩擦力。 粘度计进一步包括将激励电流（i _{exc）馈送到激励组件中的仪表电子装置。 通过仪表电子设备形成第一内部中间值（X 1> 1），其对应于激励电流（I SUB），因此表示作用的摩擦力 在流体中。 根据本发明，在仪表电子设备中产生表示流体中不均匀性的第二内部中间值（X 2 S 2 N），其然后确定粘度值（X'eta ），使用两个中间值（X 1，X 2，N 2）。 优选地，通过用于激励电流的振幅控制信号（y SUB AM）来对第一内部中间值（X SUB1）进行归一化（i> SUB ），该幅度控制信号对应于流管的振动。 结果，由粘度计提供的粘度值（X'ηη）高度精确和鲁棒，特别是独立于流动管的安装位置。}

公开(公告)号：US06662120B2

公开(公告)日：2003-12-09

申请号：US10173763

申请日：2002-06-19

申请人： Wolfgang Drahm ,  Alfred Rieder ,  Christian Matt

发明人： Wolfgang Drahm ,  Alfred Rieder ,  Christian Matt

IPC分类号： G06F1700

CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8431 ,  G01F1/8477

摘要： Such an excitation circuit is intended for use in a Coriolis mass flowmeter which is connected to, is powered exclusively from, and outputs a measurement signal exclusively via, a two-wire process control loop. The Coriolis mass flowmeter has a vibrating flow tube and an excitation assembly for vibrating the flow tube at a frequency equal or adjacent to the instantaneous mechanical resonance frequency of the flow tube. It further comprises transducer assemblies which are positioned at a given distance from each other along the flow tube and provide respective transducer signals. The excitation circuit may comprise a peak detector to which one of the transducer signals is applied as an input signal, a comparsion stage which determines a deviation of the output signal of the peak detector from an adjustable reference signal that specifies an amplitude of the vibration of the flow tube, a multiplier for the input signal to the peak detector and the output signal from the comparsion stage, and an output stage having an input connected to an output of the multiplier and supplying the excitation assembly. Instead of the multiplier, a pulse duration modulator or a DC/DC converter and a comparator may be provided.

公开(公告)号：US06484591B2

公开(公告)日：2002-11-26

申请号：US09829890

申请日：2001-04-10

申请人： Wolfgang Drahm ,  Alfred Rieder ,  Alfred Wenger ,  Rainer Lorenz

发明人： Wolfgang Drahm ,  Alfred Rieder ,  Alfred Wenger ,  Rainer Lorenz

IPC分类号： G01F184

CPC分类号： G01F1/8413 ,  G01F1/8418 ,  G01F1/8472

摘要： A single V-shaped tube (1) is bent in a plane and has an inlet section (11), an outlet section (12), an inlet bend (13), an outlet bend (14); a vertex bend (15) and a respective tube section (16, 17) between the inlet bend and the outlet bend. The distance between the vertex of the vertex bend and the inlet/outlet axis can be great. Two clamping bodies (2, 3) are clamped onto the tube sections defining a tube section. Flat bodies (31, 32) are fixed onto the clamping bodies (2, 3). Fixed to the flat bodies is an opposed-action body (41) which extends along the axis of symmetry (I—I) up to the vertex bend, where it supports a first portion of an exciter assembly (50) or a seismic exciter (50′) which excites the tube section in a third mode of vibration at an associated natural frequency f3. A sensor support (61) and a sensor support (62) are fixed to the flat body (31). A velocity or displacement sensor (71, 72) is fixed to the tube section and the sensor supports. Inlet section and outlet section are held by a supporting frame (35) to which a housing (8) is fixed.

摘要翻译： 单个V形管（1）在平面内弯曲并具有入口部分（11），出口部分（12），入口弯曲部（13），出口弯曲部（14）。 入口弯曲部和出口弯曲部之间的顶部弯曲部（15）和相应的管部（16,17）。 顶点弯曲顶点与入口/出口轴之间的距离可能很大。 两个夹紧体（2,3）被夹紧在限定管部分的管部分上。 扁平体（31,32）固定在夹持体（2,3）上。 固定到平坦体的是相对作用体（41），其沿着对称轴线（II）延伸直到顶点弯曲部，其中支撑着激励器组件（50）的第一部分或地震激励器（50' ），其以相关联的固有频率f3在第三振动模式中激励管部分。 传感器支撑件（61）和传感器支撑件（62）固定到平坦体（31）上。 速度或位移传感器（71,72）固定到管部分并且传感器支撑。 入口部分和出口部分由固定有壳体（8）的支撑框架（35）保持。

公开(公告)号：US07966895B2

公开(公告)日：2011-06-28

申请号：US12588180

申请日：2009-10-06

申请人： Daniel Kuttler ,  Alfred Rieder ,  Hao Zhu ,  Christof Huber

发明人： Daniel Kuttler ,  Alfred Rieder ,  Hao Zhu ,  Christof Huber

IPC分类号： G01F1/84

CPC分类号： G01F1/74 ,  G01F1/8418 ,  G01F1/8431 ,  G01F1/8436 ,  G01F1/849

摘要： An in line measuring device, includes a measuring transducer of the vibration-type having: at least one measuring tube vibrating, at least at times, during operation, and serving for conveying, at least at times, a two- or multiphase, flowable medium; an exciter mechanism acting on the measuring tube for producing vibrations of the at least one measuring tube; and a sensor arrangement for registering vibrations of the at least one measuring tube and for delivering at least one oscillation measurement signal representing oscillations of the measuring tube. The in line measuring device further includes measuring device electronics electrically coupled with the measuring transducer. The measuring device electronics delivers, at least at times, at least one exciter signal driving the exciter mechanism, and, at least at times, ascertains a damping value of first type, which represents a change of damping opposing the vibrations of the measuring tube within a predeterminable time interval.

摘要翻译： 一种在线测量装置，包括振动型测量传感器，其具有：至少一个测量管，至少有时在操作期间振动，并用于至少有时输送两相或多相可流动介质 ; 作用于所述测量管的用于产生所述至少一个测量管的振动的激励机构; 以及用于记录所述至少一个测量管的振动并用于输送表示所述测量管的振荡的至少一个振荡测量信号的传感器装置。 在线测量装置还包括与测量传感器电耦合的测量装置电子装置。 至少有时，测量装置电子装置至少有一个驱动激励器机构的至少一个激励器信号，并且至少有时确定第一类型的阻尼值，其表示与测量管内的振动相反的阻尼变化 一个可预定的时间间隔。

公开(公告)号：US20100095785A1

公开(公告)日：2010-04-22

申请号：US12588180

申请日：2009-10-06

申请人： Daniel Kuttler ,  Alfred Rieder ,  Hao Zhu ,  Christof Huber

发明人： Daniel Kuttler ,  Alfred Rieder ,  Hao Zhu ,  Christof Huber

IPC分类号： G01F1/84

CPC分类号： G01F1/74 ,  G01F1/8418 ,  G01F1/8431 ,  G01F1/8436 ,  G01F1/849

摘要： An in line measuring device, includes a measuring transducer of the vibration-type having: at least one measuring tube vibrating, at least at times, during operation, and serving for conveying, at least at times, a two- or multiphase, flowable medium; an exciter mechanism acting on the measuring tube for producing vibrations of the at least one measuring tube; and a sensor arrangement for registering vibrations of the at least one measuring tube and for delivering at least one oscillation measurement signal representing oscillations of the measuring tube. The in line measuring device further includes measuring device electronics electrically coupled with the measuring transducer. The measuring device electronics delivers, at least at times, at least one exciter signal driving the exciter mechanism, and, at least at times, ascertains a damping value of first type, which represents a change of damping opposing the vibrations of the measuring tube within a predeterminable time interval.

摘要翻译： 一种在线测量装置，包括振动型测量传感器，其具有：至少一个测量管，至少有时在操作期间振动，并用于至少有时输送两相或多相可流动介质 ; 作用于所述测量管的用于产生所述至少一个测量管的振动的激励机构; 以及用于记录所述至少一个测量管的振动并用于输送表示所述测量管的振荡的至少一个振荡测量信号的传感器装置。 在线测量装置还包括与测量传感器电耦合的测量装置电子装置。 至少有时，测量装置电子装置至少有一个驱动激励器机构的至少一个激励器信号，并且至少有时确定第一类型的阻尼值，其表示与测量管内的振动相反的阻尼变化 一个可预定的时间间隔。

公开(公告)号：US07966894B2

公开(公告)日：2011-06-28

申请号：US12588178

申请日：2009-10-06

申请人： Daniel Kuttler ,  Alfred Rieder ,  Hao Zhu ,  Christof Huber

发明人： Daniel Kuttler ,  Alfred Rieder ,  Hao Zhu ,  Christof Huber

IPC分类号： G01F1/84

CPC分类号： G01F1/849 ,  G01F1/8418 ,  G01F1/8431 ,  G01F1/8436

摘要： An in line measuring device, includes a measuring transducer having: a least one measuring tube vibrating, during operation, and serving for conveying, a two- or multiphase, flowable medium; an exciter mechanism for producing vibrations of the at least one measuring tube; a sensor arrangement for registering vibrations of the measuring tube and for delivering an oscillation measurement signal representing oscillations of the measuring tube, and a measuring device electronics electrically coupled with the measuring transducer. The measuring device electronics delivers, at least one exciter signal driving the exciter mechanism, and, in such a manner that the at least one measuring tube, during operation, —driven by the exciter mechanism driven by means of the at least one exciter signal—is excited, to execute vibrations in a wanted mode of the measuring transducer, in which it, at least partially, executes bending oscillations about an imaginary bending oscillation axis of the measuring transducer, Moreover, the measuring device electronics ascertains, a damping value of first type, which represents, instantaneously, a damping of vibrations of the at least one measuring tube, which opposes the bending oscillations of the at least one measuring tube corresponding to the Coriolis mode.

摘要翻译： 一种在线测量装置，包括：测量传感器，具有：至少一个测量管在操作期间振动并用于输送两相或多相流动介质; 用于产生所述至少一个测量管的振动的激励机构; 用于记录测量管的振动并传送表示测量管的振荡的振荡测量信号的传感器装置，以及与测量换能器电耦合的测量装置电子装置。 所述测量装置电子装置传送至少一个驱动所述激励机构的激励器信号，并且以这样一种方式，使得所述至少一个测量管由操作期间由所述至少一个激励器信号驱动的激励机构驱动， 激励，以测量传感器的想要的方式执行振动，其中至少部分地执行围绕测量换能器的假想弯曲振荡轴线的弯曲振荡。此外，测量装置电子装置确定第一 类型，其瞬时表示与至少一个对应于科里奥利模式的测量管的弯曲振荡相对的至少一个测量管的振动的阻尼。

公开(公告)号：US20100095784A1

公开(公告)日：2010-04-22

申请号：US12588179

申请日：2009-10-06

申请人： Daniel Kuttler ,  Alfred Rieder ,  Hao Zhu ,  Christof Huber

发明人： Daniel Kuttler ,  Alfred Rieder ,  Hao Zhu ,  Christof Huber

IPC分类号： G01F1/84

CPC分类号： G01F1/74 ,  G01F1/8418 ,  G01F1/8431 ,  G01F1/8436 ,  G01F1/849

摘要： An inline measuring device, includes a measuring transducer having: at least one measuring tube vibrating, during operation, and serving for conveying, at least at times, a two- or multiphase, flowable medium; an exciter mechanism for producing vibrations of the measuring tube; and a sensor arrangement for registering vibrations of the measuring tube and for delivering oscillation measurement signal representing oscillations of the measuring tube. Measuring device electronics electrically coupled with the measuring transducer. The measuring device electronics delivers, at least one exciter signal driving the exciter mechanism, and, ascertains a damping value of a first type, which represents, instantaneously, a damping of vibrations of the at least one measuring tube induced by medium conveyed in the at least one measuring tube and antisymmetric with reference to an imaginary central plane of the at least one measuring tube coplanar with a cross section of the measuring tube, and/or which represents, instantaneously, a damping of vibrations of the at least one measuring tube induced by medium conveyed in the at least one measuring tube.

摘要翻译： 一种在线测量装置，包括测量传感器，其具有：至少一个测量管在操作期间振动并用于至少有时传送两相或多相流动介质; 用于产生测量管的振动的激励机构; 以及用于记录测量管的振动并传送表示测量管的振荡的振荡测量信号的传感器装置。 与测量传感器电耦合的测量设备电子设备。 所述测量装置电子装置输送至少一个驱动所述激励机构的激励器信号，并且确定第一类型的阻尼值，所述第一类型的阻尼值瞬时表示由在所述传感器中输送的介质引起的所述至少一个测量管的振动的阻尼 至少一个测量管和相对于与所述测量管的横截面共面的所述至少一个测量管的假想中心平面的反对称，和/或其瞬时表示所述至少一个测量管的振动的阻尼 通过在至少一个测量管中输送的介质。