公开(公告)号：US20170356777A1

公开(公告)日：2017-12-14

申请号：US15540048

申请日：2015-11-18

Applicant: Endress + Hauser Flowtec AG

Inventor： Hao Zhu ,  Alfred Rieder

IPC: G01F1/84 ,  G01F25/00

CPC classification number: G01F1/8413 ,  G01F1/8422 ,  G01F1/8477 ,  G01F25/0007

Abstract: A Coriolis mass flow measuring device 100 includes four bent measuring tubes 110a, 110b, 110, 110dd, two actuator arrangements 140a, 140c, and two sensor arrangements 142a-1, 142a-2, 142c-1, 142c-2, wherein all four measuring tubes (110a, 110b, 110c, 110d) are joined inlet end and outlet end with collectors (120), wherein the measuring tubes are connected inlet end and outlet end pairwise with node plates 132a, 132c, 134a, 134c to form oscillators, wherein the actuator arrangements 140a, 140c are adapted to excite bending oscillation wanted modes between the two measuring tubes of an oscillator, wherein the first oscillator and the second oscillator have bending oscillation wanted modes with first and second wanted mode eigenfrequencies (f11, f12), wherein the magnitude of the difference of the wanted mode eigenfrequencies of the two oscillators (|f11−f12|) amounts to at least 0.1 times, for example, at least 0.2 times and especially at least 0.4 times the lower of the two wanted mode eigenfrequencies, wherein the sensor arrangements are adapted to register oscillations of the oscillators.

公开(公告)号：US20170350742A1

公开(公告)日：2017-12-07

申请号：US15537904

申请日：2015-11-18

Applicant: Endress + Hauser Flowtec AG

Inventor： Hao Zhu ,  Alfred Rieder ,  Ennio Bitto

IPC: G01F1/84 ,  G01N9/00

CPC classification number: G01F1/8477 ,  G01F1/8413 ,  G01N9/002

Abstract: A Coriolis mass flow measuring device and/or density measuring device (100) includes two bent measuring tubes (110a, 110b), which extend mirror symmetrically to a first mirror plane between the measuring tubes, an actuator arrangement (140) and at least one sensor arrangement (142a, 142b); at the inlet end and at the outlet end, in each case, a collector (120a, 120a), with which the measuring tubes are joined, wherein the collectors (120a, 120b) each fulfill the functionality of a node plate; a support body (124), which connects the collectors (120a, 120b) rigidly with one another; and inlet end and outlet end, in each case, at least one plate-shaped coupler (132a, 132b, 134a, 134b), which connect the measuring tubes pairwise with one another, in order to form an oscillator, wherein the couplers have tube openings for measuring tubes, wherein the measuring tubes are connected at least sectionally with the couplers, wherein inlet end and outlet end, in each case, at least one coupler (132a, 132b, 134a, 134b) has, between the measuring tubes (110a, 110b), a tuning opening (146) for influencing the oscillation characteristics of the oscillator.

公开(公告)号：US20170261474A1

公开(公告)日：2017-09-14

申请号：US15531787

申请日：2015-11-03

Applicant: Endress + Hauser Flowtec AG

Inventor： Hao Zhu ,  Alfred Rieder ,  Wolfgang Drahm ,  Michael Kirst

IPC: G01N29/22 ,  G01N11/16 ,  G01N9/00 ,  G01N29/02 ,  G01F1/84

Abstract: A measuring transducer comprises two flow dividers having, in each case, two tubular chambers separated from one another and adapted for guiding in- and out flowing fluid, of which each has a chamber floor, in which are formed, in each case, two mutually spaced flow openings communicating with a lumen of the chamber, and as well as a tube arrangement having at least four measuring tubes connected to the flow dividers for guiding flowing fluid with parallel flow. Moreover, the measuring transducer comprises an electromechanical exciter mechanism for exciting mechanical oscillations of the measuring tubes as well as a sensor arrangement for registering oscillatory movements of the measuring tubes and for generating at least two oscillation measurement signals representing oscillations of at least one of the measuring tubes. The measuring system includes besides the measuring transducer also transmitter electronics electrically connected therewith for activating the exciter mechanism and for processing at least one of the oscillation measurement signals generated by the sensor arrangement.

公开(公告)号：US20160138997A1

公开(公告)日：2016-05-19

申请号：US14896942

申请日：2014-05-19

Applicant: ENDRESS+HAUSER FLOWTEC AG

Inventor： Hao Zhu ,  Alfred Rieder ,  Holger Bernhard

IPC: G01M5/00 ,  G08B21/18

CPC classification number: G01M5/0058 ,  G01F1/8413 ,  G01F1/8431 ,  G01F1/8477 ,  G01M5/0033 ,  G01M5/0041 ,  G08B21/182

Abstract: The method serves for monitoring and/or checking a pressure device having a lumen surrounded by a wall for conveying and/or storing a fluid. To this end, the method comprises a step of registering both a strain of a first wall segment as well as also a strain of at least a second wall segment spaced from the first wall segment, for ascertaining a strain deviation value representing a difference between the strain of the first wall segment and the strain of the second wall segment, as well as a step of using the strain deviation value for ascertaining damage to the wall, as a result of plastic deformation of the wall and/or as a result of wear of the wall. The measuring system of the invention comprises supplementally to the pressure device a first strain sensor affixed on the first wall segment for producing a first strain signal dependent on a time variable strain of the first wall segment as well as at least a second strain sensor affixed on the second wall segment for producing a second strain signal dependent on a time variable strain of the second wall segment. Moreover, the measuring system comprises a transmitter electronics electrically coupled both with the first strain sensor as well as also the second strain sensor. The transmitter electronics is adapted to receive both the first strain signal as well as also the second strain signal as well as to ascertain, with application of the strain signals, damage to the wall.

Abstract translation: 该方法用于监测和/或检查具有由壁包围的腔的压力装置，用于输送和/或储存流体。 为此，该方法包括对第一壁段的应变以及与第一壁段间隔开的至少第二壁段的应变进行配准的步骤，以确定表示第一壁段之间的差的应变偏差值 第一壁段的应变和第二壁段的应变，以及由于壁的塑性变形和/或由于磨损而使用应变偏差值来确定对壁的损害的步骤 的墙。 本发明的测量系统包括附加到压力装置上的固定在第一壁段上的第一应变传感器，用于产生取决于第一壁段的时间可变应变的第一应变信号以及至少第二应变传感器 所述第二壁段用于产生取决于所述第二壁段的时间可变应变的第二应变信号。 此外，测量系统包括与第一应变传感器以及第二应变传感器电耦合的发射器电子装置。 发射机电子装置适于接收第一应变信号以及第二应变信号，以及通过施加应变信号确定对壁的损坏。

公开(公告)号：US12215993B2

公开(公告)日：2025-02-04

申请号：US17999473

申请日：2021-04-23

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu

IPC: G01F1/84 ,  G01F15/02 ,  G01N9/00

Abstract: A method includes registering a first mass flow rate portion measurement value {dot over (m)}1 of a first flow portion through measuring tubes of a first oscillator and a second mass flow rate portion measurement value {dot over (m)}2 of a second flow portion through measuring tubes of the second oscillator. A sum of the two mass flow rate portion measurement values gives a mass flow rate total measurement value. The method also includes registering first and second density portion measurement values ρ1, ρ2 of the medium in the flow portions and calculating the effective density measurement value peff as a function of the density portion measurement values ρ1, ρ2 with weightings dependent on the mass flow rate portion measurement values {dot over (m)}1, {dot over (m)}2. The different weighting functions are applied for ascertaining the weightings as a function of the mass flow rate portion measurement values.

公开(公告)号：US12098939B2

公开(公告)日：2024-09-24

申请号：US17757370

申请日：2020-11-20

Applicant: Endress+Hauser Flowtec AG

Inventor： Ennio Bitto ,  Hao Zhu ,  Martin Josef Anklin ,  Wolfgang Drahm

IPC: G01F1/84

CPC classification number: G01F1/8413 ,  G01F1/8477

Abstract: A measuring tube arrangement of a measuring device for detecting a mass flow rate of a flowable medium includes: two measuring tubes for conducting the medium, wherein the measuring tubes each have an inlet and an outlet, wherein the measuring tubes are bent at least once between the inlet and outlet; a coupler arrangement for mechanically coupling the two measuring tubes, wherein the coupler arrangement has at least two coupler elements, wherein one coupler element is arranged at the inlet, and one coupler element is arranged at the outlet; two magnet arrangements, each having at least two magnets, arranged on the measuring tubes, wherein precisely one magnet arrangement is arranged on one measuring tube; and a connecting body configured to mechanically detachably connect the measuring tube arrangement to a carrier unit, wherein the connecting body is connected to the inlet and to the outlet of the respective measuring tubes.

公开(公告)号：US12055423B2

公开(公告)日：2024-08-06

申请号：US17416834

申请日：2019-11-21

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Wolfgang Drahm ,  Alfred Rieder

IPC: G01F1/667 ,  G01F1/74 ,  G01N9/00

CPC classification number: G01F1/74 ,  G01F1/668 ,  G01N9/002

Abstract: A method for ascertaining a physical parameter of a liquid, which has a gas charge using a measuring transducer having a measuring tube for conveying the medium. The measuring tube executes oscillations in bending oscillation mode. The method includes: exciting the measuring tube with an eigenfrequency of a bending oscillation mode—or f1-mode, ascertaining a suppressed excitation frequency, at which the oscillation amplitude of the measuring tube is minimum; identifying the frequency as the resonant frequency of the gas-charged liquid; ascertaining a density correction term as a function of the resonant frequency for correcting a preliminary density measured value and/or mass flow correction term as a function of the resonant frequency for correcting a preliminary mass flow rate measured value, and/or ascertaining the velocity of sound in the gas-charged liquid in the measuring tube as a function of the resonant frequency.

公开(公告)号：US11933807B2

公开(公告)日：2024-03-19

申请号：US17616973

申请日：2020-05-04

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Michael Wiesmann

IPC: G01N9/32 ,  G01F1/84 ,  G01N11/04

CPC classification number: G01N9/32 ,  G01F1/8422 ,  G01F1/8427 ,  G01F1/8431 ,  G01F1/8477 ,  G01N11/04

Abstract: A measuring device for determining the density, the mass flow and/or the viscosity of a gas-charged liquid includes an oscillator, having a media-conducting measuring tube and two vibrational modes having media-density-dependent natural frequencies; an exciter for exciting the two vibrational modes; a vibrational sensor for detecting vibrations of the oscillator; and an operating and evaluating circuit to apply an excitation signal to the exciter, detect signals of the vibration sensor, determine current values of the natural frequencies of the two vibrational modes of the oscillator and fluctuations of the natural frequencies. The operating and evaluating circuit is designed to determine a first media state value, wherein the operating and evaluating circuit is furthermore designed to determine a second media state value which represents a gas charge of the medium.

公开(公告)号：US20230280195A1

公开(公告)日：2023-09-07

申请号：US17999473

申请日：2021-04-23

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu

IPC: G01F1/84

CPC classification number: G01F1/8454 ,  G01F1/8431 ,  G01F1/8436

Abstract: A method includes registering a first mass flow rate portion measurement value ṁ1 of a first flow portion through measuring tubes of a first oscillator and a second mass flow rate portion measurement value ṁ2 of a second flow portion through measuring tubes of the second oscillator. A sum of the two mass flow rate portion measurement values gives a mass flow rate total measurement value. The method also includes registering first and second density portion measurement values ρ1, ρ2 of the medium in the flow portions and calculating the effective density measurement value ρeff as a function of the density portion measurement values ρ1, ρ2 with weightings dependent on the mass flow rate portion measurement values ṁ1, ṁ2. The different weighting functions are applied for ascertaining the weightings as a function of the mass flow rate portion measurement values.

公开(公告)号：US20230026350A1

公开(公告)日：2023-01-26

申请号：US17757496

申请日：2020-12-01

Applicant: Endress+Hauser Flowtec AG

Inventor： Hao Zhu ,  Yaoying Lin ,  Andreas Güttler

IPC: G01N29/036

Abstract: A method for characterizing the gas load of a medium, which comprises a liquid loaded with gas, using a measurement sensor that guides the medium in at least one vibrating measurement tube, includes: determining a speed of sound value and a resonator density value of the medium based on natural frequencies of at least two different vibration modes of the measurement tube; determining a measured pressure value for the medium guided in the measurement tube; determining a gas volume content of suspended bubbles in the medium based on the resonator density value, the speed of sound value and the measured pressure value; and determining a value for the gas volume content of free bubbles based on the resonator density value of the medium and the gas volume content of suspended bubbles.