公开(公告)号：US20020117010A1

公开(公告)日：2002-08-29

申请号：US10135625

申请日：2002-04-30

Applicant: Endress + Hauser Flowtec AG.

Inventor： Wolfgang Drahm ,  Georg Szaloky ,  Alfred Wenger ,  Ennio Bitto ,  Ole Koudal ,  Christian Matt ,  Christian Schutze

IPC: G01F001/84

CPC classification number: G01F1/8409 ,  G01F1/8418 ,  G01F1/849 ,  G01N9/002 ,  G01N11/162

Abstract: This mass flow/density sensor (10), which can be installed in a pipe and through which a fluid to be measured flows during operation, is to be balanced over a wide density range, so that accurate measurements are possible. A single straight measuring tube (13) having a longitudinal axis (131) extends between its inlet end (11) and the outlet end (12) and is fixed to a support, e.g., a cylindrical tube (14, 14null). The support has a longitudinal centroidal line (141) which is parallel to, but does not coincide with, the longitudinal axis (131) of the measuring tube. A cantilever (15) is fixed to the measuring tube (13) midway between the inlet and outlet ends (11, 12) and in operation causes the measuring tube to vibrate either in a first fundamental flexural mode or in a second fundamental flexural mode having a higher frequency than this first mode. An excitation arrangement (16) disposed midway between the end pieces excites the measuring tube (13) in the second mode. Sensors (17, 18) for the motions of the measuring tube on the inlet and outlet side are positioned between the middle of the tube and the inlet and outlet ends, respectively. The support may be provided with a counterbalance. Because of the torsional vibrations exerted by the cantilever on the measuring tube, the sensor is also well suited for measuring the viscosity of the fluid.

Abstract translation: 这种质量流量/密度传感器（10）可以在宽的密度范围内平衡，可以安装在管道中，待测量的流体在运行过程中流动，从而可以进行精确的测量。 具有纵向轴线（131）的单个直的测量管（13）在其入口端（11）和出口端（12）之间延伸并且被固定到诸如圆柱形管（14,14'）的支撑件上。 支撑件具有与测量管的纵向轴线（131）平行但不一致的纵向中心线（141）。 悬臂（15）在入口端和出口端（11,12）之间的中途固定到测量管（13），并且在操作中使测量管以第一基本弯曲模式或第二基本弯曲模式振动， 比第一模式高的频率。 设置在端片之间的中间的激励装置（16）在第二模式下激发测量管（13）。 用于入口和出口侧的测量管的运动的传感器（17,18）分别位于管的中间和入口端和出口端之间。 支撑件可以设置有平衡。 由于悬臂在测量管上施加的扭转振动，传感器也非常适合测量流体的粘度。

公开(公告)号：US20020020227A1

公开(公告)日：2002-02-21

申请号：US09828570

申请日：2001-07-10

Inventor： Yousif Hussain ,  Chris N. Rolph

IPC: G01F001/84

CPC classification number: G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/849

Abstract: This document describes and illustrates a mass flowmeter for measuring the flow of fluids, operating by the Coriolis principle and designed for mounting on a fluid-carrying, preferably straight pipe (1), with at least one detector capable of measuring Coriolis forces and/or Coriolis-force-induced oscillations of the pipe (1), and with a bridge (2). The detector is attached to the bridge (2) and the bridge (2) is mountable on the pipe (1). A mass flowmeter that is compact and can be mounted on existing pipes of a conduit system is made possible by a design that permits radial attachment of the bridge (2) on the pipe (1).

Abstract translation: 本文件描述并示出了用于测量流体的质量流量计，该流量计由科里奥利原理运行，并被设计用于安装在流体承载的，优选直管（1）上，具有至少一个能够测量科里奥利力和/或 管道（1）和桥（2）的科里奥利力感应振荡。 检测器连接到桥（2），桥（2）可安装在管（1）上。 通过允许桥（2）在管道（1）上的径向附接的设计，可以实现紧凑并且可以安装在管道系统的现有管道上的质量流量计。

公开(公告)号：US20040206189A1

公开(公告)日：2004-10-21

申请号：US10831228

申请日：2004-04-26

Applicant: Invensys Systems, Inc.

Inventor： Manus P. Henry ,  Maria Jesus De La Fuente

IPC: G01F001/84

CPC classification number: G01F1/8431 ,  G01F1/74 ,  G01F1/8436 ,  G01F1/8486 ,  G01F15/024

Abstract: A flowmeter is disclosed. The flowmeter includes a vibratable conduit, and a driver connected to the conduit that is operable to impart motion to the conduit. A sensor is connected to the conduit and is operable to sense the motion of the conduit and generate a sensor signal. A controller is connected to receive the sensor signal. The controller is operable to detect a single-phase flow condition and process the sensor signal using a first process during the single-phase flow condition to generate a validated mass-flow measurement. The controller is also operable to detect a two-phase flow condition and process the sensor signal using a second process during the two-phase flow condition to generate the validated mass-flow measurement.

Abstract translation: 公开了一种流量计。 流量计包括可振动导管和连接到导管的驱动器，其可操作以将运动传递给导管。 传感器连接到管道并且可操作以感测导管的运动并产生传感器信号。 连接控制器以接收传感器信号。 控制器可操作以检测单相流动状态并且在单相流动条件期间使用第一过程处理传感器信号以产生经验证的质量流量测量。 控制器还可操作以检测两相流条件，并且在两相流条件期间使用第二过程处理传感器信号，以产生经验证的质量流量测量。

公开(公告)号：US20040045371A1

公开(公告)日：2004-03-11

申请号：US10238968

申请日：2002-09-10

Inventor： Donald R. Cage

IPC: G01F001/84

CPC classification number: G01F1/8413 ,  G01F1/8477

Abstract: A Coriolis mass flowmeter which comprises at least first and second generally parallel flowtubes, each of which includes a first half that is connected to an inlet manifold and a second half that is connected to an outlet manifold, a first brace bar which is attached to the first halves of the flowtubes, and a second brace bar which is attached to the second halves of the flowtubes. The first and second brace bars are oriented on the flowtubes such that, when the flowtubes are vibrated in at least one of a driven mode of vibration and a Coriolis mode of vibration, the resulting reaction forces at the inlet and outlet manifolds are less than those that exist when the first and second brace bars are oriented generally perpendicular to the flowtubes.

公开(公告)号：US20040025599A1

公开(公告)日：2004-02-12

申请号：US10363846

申请日：2003-06-26

Inventor： Christian Matt

IPC: G01F001/84

CPC classification number: G01F1/8409 ,  G01F1/8413 ,  G01F1/8431 ,  G01F1/8436 ,  G01F1/849

Abstract: According to the invention, a digital processor (DSP) is provided in a measuring and operating circuit for a Coriolis-type mass flowmeter. From the vibration sensor signals, said digital processor evaluates only the differential signal (S) and the one sensor signal (S1). The in-phase component (I) and the quadrature components (Q) are determined for the differential signal (D), and the amplification of the second sensor signal (S2) is controlled in such a manner that the in-phase component (I) vanishes. The mass flow rate (m) is determined from the quadrature component (Q).

Abstract translation: 根据本发明，在科里奥利型质量流量计的测量和操作电路中提供数字处理器（DSP）。 从振动传感器信号，所述数字处理器仅评估差分信号（S）和一个传感器信号（S1）。 确定差分信号（D）的同相分量（I）和正交分量（Q），并且以这样的方式控制第二传感器信号（S2）的放大，使得同相分量（I ）消失 质量流量（m）由正交分量（Q）确定。

公开(公告)号：US20030140712A1

公开(公告)日：2003-07-31

申请号：US10365023

申请日：2003-02-12

Applicant: Emerson Electric Co.

Inventor： Michael J. Barger ,  Joseph C. Dille ,  Timothy W. Scott ,  Jeffrey L. Whiteley

IPC: G01F001/84

CPC classification number: G01F1/8409 ,  G01F1/8404 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/8436 ,  G01F1/844 ,  G01F1/8445 ,  G01F1/8472 ,  G05D7/0635

Abstract: A mass flow measurement device includes a flow sensor tube and a housing having the flow sensor tube situated therein. A drive device is positioned outside the housing for vibrating the flow sensor tube, and at least one pick off sensor is situated relative to the flow senior tube so as to measure the twist in the flow sensor tube due to Coriolis force Another mass flow measurement device includes an enclosure having first and second ends. A first sealing member is situated relative to the enclosure first end and a flow body such that the flow body and the first end are connected in a sealed manner. A second sealing member is situated relative to the enclosure second end and a user interface assembly such that the user interface assembly and the second end are connected in a sealed manner.

Abstract translation: 质量流量测量装置包括流量传感器管和其中设置有流量传感器管的壳体。 驱动装置位于壳体的外部，用于使流量传感器管振动，并且至少一个拾取传感器相对于流动高级管设置，以便测量由于科里奥利力而导致的流量传感器管中的扭转另一个质量流量测量装置 包括具有第一端和第二端的外壳。 第一密封构件相对于外壳第一端和流体本体设置成使得流体和第一端以密封的方式连接。 第二密封构件相对于外壳第二端和用户界面组件设置，使得用户界面组件和第二端以密封的方式连接。

公开(公告)号：US20030126932A1

公开(公告)日：2003-07-10

申请号：US10313832

申请日：2002-12-06

Inventor： Helmut Brockhaus

IPC: G01F001/84

CPC classification number: G01F1/8431

Abstract: A mass flowmeter and a method for operating a mass flowmeter is based on the Coriolis principle and incorporates a Coriolis measuring tube, an oscillator associated with and stimulating said Coriolis measuring tube, and a transducer associated with the Coriolis measuring tube and which collects Coriolis forces and/or oscillations based on Coriolis forces. The electric power consumed in the mass flowmeter is controlled as a function of the available electric power. This permits the efficient use of the available electric power, thus permitting the operation of the mass flowmeter via a two wire interface that serves for both the input of electric power and the output of measuring data.

Abstract translation: 质量流量计和用于操作质量流量计的方法基于科里奥利原理，并且包括科里奥利测量管，与科里奥利测量管相关联并且刺激所述科里奥利测量管的振荡器，以及与科里奥利测量管相关的传感器，其收集科里奥利力 /或基于科里奥利力的振荡。 质量流量计中消耗的电力作为可用电力的函数被控制。 这允许有效地利用可用的电力，从而允许通过用于电力输入和测量数据的输出的双线接口来操作质量流量计。

公开(公告)号：US20030061889A1

公开(公告)日：2003-04-03

申请号：US10233980

申请日：2002-09-03

Inventor： Srinivas Tadigadapa ,  Chialun Tsai ,  Yafan Zhang ,  Nader Najafi

IPC: B23P013/04 ,  G01F001/84

CPC classification number: G01N9/002 ,  G01F1/8404 ,  G01F1/8445 ,  G01F1/8472 ,  G01N11/16 ,  G01N2009/006 ,  Y10T29/49002 ,  Y10T29/49428 ,  Y10T29/49995

Abstract: Micromachine fluidic apparatus incorporates a free-standing tube section and electrodes to actuate or control the movement of the tube section, or to sense the movement of the tube section, or both. Electronic circuitry, which may be disposed on the same substrate as the fluidic portion of the apparatus, is used in conjunction with the tube and electrodes in conjunction with a variety of different applications, including fluid flow measurement, fluid density measurement, fluid viscosity measurement, fluid transport, separation and/or mixing. According to a particular embodiment, the freestanding section of the tube is resonated for fluid flow and density measurements according to the Coriolis effect. Capacitive/electrostatic actuation techniques are used to control or resonate the free-standing section of the tube, and to detect variations in tube movement. Different methods of fabricating micromachine fluidic apparatus are also disclosed, including the use of fusion bonding of non-conducting substrates, high-aspect ratio etching techniques, and anisotropic etching and refill techniques, preferably utilizing chevron-shaped slit openings to fabricate microtube sections.

Abstract translation: 微机械流体装置包括独立的管部分和用于致动或控制管部分的移动或感测管部分的运动或两者的电极。 可以与设备的流体部分设置在同一基板上的电子电路结合各种不同的应用与管和电极一起使用，包括流体流量测量，流体密度测量，流体粘度测量， 流体输送，分离和/或混合。 根据特定实施例，根据科里奥利效应，管的独立部分被共振用于流体流动和密度测量。 电容/静电致动技术用于控制或谐振管的独立部分，并检测管运动的变化。 还公开了制造微机械流体装置的不同方法，包括使用非导电衬底的熔接，高纵横比蚀刻技术以及各向异性蚀刻和再填充技术，优选地使用人字形狭缝开口来制造微管段。

公开(公告)号：US20030055580A1

公开(公告)日：2003-03-20

申请号：US09941332

申请日：2001-08-29

Inventor： David F. Normen

IPC: G01F001/84

CPC classification number: G01F15/024 ,  G01F1/8418 ,  G01F1/8436 ,  G01F1/8477 ,  G01F1/849 ,  G01F25/0007 ,  G01N9/002

Abstract: A process is disclosed for determining properties of a flow tube and of a fluid flowing through the flow tube. One example of such a property is the density of the fluid flowing through the flow tube. To determine the properties, the process determines a measured mode shape based on pickoff signals received from a plurality of pickoffs. The process selects values for flow tube and fluid parameters. The process determines an estimated mode shape based on the values for the flow tube and fluid parameters. The process compares the measured mode shape and the estimated mode shape to determine an error for the values for the flow tube and fluid parameters. If the error for the values is within an error range, then the process determines the properties of the flow tube and of the fluid based on the estimated values. If the error for the values is not within the error range, then the process selects new values for the flow tube and fluid parameters.

Abstract translation: 公开了一种用于确定流管和流过流管的流体的性质的方法。 这种性质的一个实例是流过流管的流体的密度。 为了确定属性，该过程基于从多个拾取接收到的拾取信号确定测量模式形状。 该过程选择流量管和流体参数的值。 该过程基于流管的值和流体参数来确定估计的模式形状。 该过程将比较测量模式形状和估计模式形状，以确定流量管和流体参数值的误差。 如果值的误差在误差范围内，则该过程基于估计值确定流量管和流体的属性。 如果值的误差不在误差范围内，那么该过程将为流量管和流体参数选择新的值。

公开(公告)号：US20030010136A1

公开(公告)日：2003-01-16

申请号：US10173763

申请日：2002-06-19

Inventor： Wolfgang Drahm ,  Alfred Rieder ,  Christian Matt

IPC: G01F001/84

CPC classification number: G01F1/8409 ,  G01F1/8413 ,  G01F1/8431 ,  G01F1/8477

Abstract: 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.

Abstract translation: 这种激励电路旨在用于科里奥利质量流量计，该流量计通过两线制过程控制回路连接到专用的电源，并输出测量信号。 科里奥利质量流量计具有振动流管和激励组件，用于以与流管的瞬时机械共振频率相等或相邻的频率振动流管。 它还包括换能器组件，其沿着流管彼此定位在给定距离处并提供相应的换能器信号。 激励电路可以包括峰值检测器，其中一个换能器信号被施加到输入信号，对比级确定峰值检测器的输出信号与可调参考信号的偏差，该参考信号指定振幅的振幅 流管，用于到峰值检测器的输入信号的乘法器和来自比较级的输出信号，以及输出级，其输入端连接到乘法器的输出并提供激励组件。 代替乘法器，可以提供脉冲持续时间调制器或DC / DC转换器和比较器。