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公开(公告)号：US20180075832A1
公开(公告)日：2018-03-15
申请号：US15563646
申请日：2016-03-24
Applicant: Endress + Hauser Flowtec AG
Inventor： Yaoying Lin , Alfred Rieder , Wolfgang Drahm , Michal Bezdek , Pierre Ueberschlag
Abstract: An arrangement, comprising a housing wall, an ultrasonic transducer and a damping element with a longitudinal axis, which damping element connects the ultrasonic transducer with the housing wall. The ultrasonic transducer has an end piece with a medium-contacting surface, from which ultrasonic signals are transferred into a gaseous or liquid medium. The damping element is provided for body sound damping between the ultrasonic transducer and the housing wall, and wherein the damping element has at least one, especially a number of, oscillatory nodes, characterized in that there is arranged between the damping element and the housing wall at least a first sealing ring, which is positioned at a height of an oscillatory node.
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公开(公告)号：US12104939B2
公开(公告)日：2024-10-01
申请号：US17621306
申请日：2020-05-26
Applicant: Endress+Hauser Flowtec AG
Inventor： Hao Zhu , Alfred Rieder , Martin Josef Anklin , Reinhard Huber , Yaoying Lin
CPC classification number: G01F1/8427 , G01N9/002 , G01N2009/006
Abstract: A method for the measurement of a physical parameter of a liquid by means of a sensor having at least one measuring tube for conducting the liquid, wherein the measuring tube can be excited to vibrate in at least one flexural vibration mode, comprises: determining at least one current value of a vibration parameter of the flexural vibration mode; determining a measurement value of the physical parameter according to the current value of the vibration parameter, wherein the measurement value is compensated in respect of the resonator effect according to a current value for the natural frequency of the flexural vibration mode and according to the sound velocity of the liquid conducted in the measuring tube, wherein the value for the sound velocity is provided independently of the vibrations of the measuring tube.
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公开(公告)号：US20210223080A1
公开(公告)日：2021-07-22
申请号：US17055853
申请日：2019-04-17
Applicant: Endress+Hauser Flowtec AG
Inventor： Hao Zhu , Alfred Rieder , Yaoying Lin , Robert Lalla , Reinhard Huber
Abstract: A measuring device for determining density, mass flow rate and/or viscosity of a flowable medium includes: an oscillator including at least one oscillatable measuring tube for conveying the medium, and having at least one oscillatory mode, whose eigenfrequency depends on density of the medium; an exciter for exciting the oscillatory mode; at least one oscillation sensor for registering oscillations of the oscillator; and an operating-evaluating circuit, which is adapted to supply the exciter with an excitation signal, to register signals of the oscillation sensor, based on the signals of the oscillation sensor to ascertain current values of the eigenfrequency of the oscillator as well as variations of the eigenfrequency, and to determine a value characterizing density variations of the medium, wherein the value depends on a function, which is proportional to the variation of the eigenfrequency and has an eigenfrequency dependent normalization.
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公开(公告)号：US12117325B2
公开(公告)日：2024-10-15
申请号：US17607962
申请日：2020-03-31
Applicant: Endress+Hauser Flowtec AG
Inventor： Hao Zhu , Alfred Rieder , Yaoying Lin
CPC classification number: G01F1/8436 , G01N9/002 , G01N11/16 , G01F1/8477 , G01N2009/006
Abstract: The disclosure relates to a measuring device for characterizing a non-homogeneous, flowable medium, and for determining the density, the mass flow rate and/or the viscosity of the medium measuring tube for guiding the medium. includes at least one mode of oscillation, the natural frequency of which depends on the density of the medium An exciter for exciting the mode of oscillation and an operation and evaluation circuit designed to apply an excitation signal to the exciter, to capture signals from the oscillation sensor, to determine current values of the natural frequency of the oscillator and fluctuations of the natural frequency on the basis of the signals from the oscillation sensor.
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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.
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Patent Agency Ranking
公开(公告)号：US20220364895A1
公开(公告)日：2022-11-17
申请号：US17621306
申请日：2020-05-26
Applicant: Endress+Hauser Flowtec AG
Inventor： Hao Zhu , Alfred Rieder , Martin Josef Anklin , Reinhard Huber , Yaoying Lin
Abstract: A method for the measurement of a physical parameter of a liquid by means of a sensor having at least one measuring tube for conducting the liquid, wherein the measuring tube can be excited to vibrate in at least one flexural vibration mode, comprises: determining at least one current value of a vibration parameter of the flexural vibration mode; determining a measurement value of the physical parameter according to the current value of the vibration parameter, wherein the measurement value is compensated in respect of the resonator effect according to a current value for the natural frequency of the flexural vibration mode and according to the sound velocity of the liquid conducted in the measuring tube, wherein the value for the sound velocity is provided independently of the vibrations of the measuring tube.
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公开(公告)号：US20220291032A1
公开(公告)日：2022-09-15
申请号：US17607962
申请日：2020-03-31
Applicant: Endress+Hauser Flowtec AG
Inventor： Hao Zhu , Alfred Rieder , Yaoying Lin
Abstract: The disclosure relates to a measuring device for characterizing a non-homogeneous, flowable medium, and for determining the density, the mass flow rate and/or the viscosity of the medium measuring tube for guiding the medium natural frequency of which depends on the density of the medium. An exciter for exciting the mode of oscillation and an operation and evaluation circuit designed to apply an excitation signal to the exciter, to capture signals from the oscillation sensor, to determine current values of the natural frequency of the oscillator and fluctuations of the natural frequency on the basis of the signals from the oscillation sensor.
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公开(公告)号：US20250093189A1
公开(公告)日：2025-03-20
申请号：US18920287
申请日：2024-10-18
Applicant: Endress+Hauser Flowtec AG
Inventor： Hao Zhu , Alfred Rieder , Yaoying Lin , Robert Lalla , Reinhard Huber
Abstract: A measuring device for determining density, mass flow rate and/or viscosity of a flowable medium includes: an oscillator including at least one oscillatable measuring tube for conveying the medium, and having at least one oscillatory mode, whose eigenfrequency depends on density of the medium; an exciter for exciting the oscillatory mode; at least one oscillation sensor for registering oscillations of the oscillator; and an operating-evaluating circuit, which is adapted to supply the exciter with an excitation signal, to register signals of the oscillation sensor, based on the signals of the oscillation sensor to ascertain current values of the eigenfrequency of the oscillator as well as variations of the eigenfrequency, and to determine a value characterizing density variations of the medium, wherein the value depends on a function, which is proportional to the variation of the eigenfrequency and has an eigenfrequency dependent normalization.
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公开(公告)号：US20250067586A1
公开(公告)日：2025-02-27
申请号：US18720940
申请日：2022-12-02
Applicant: Endress+Hauser Flowtec AG
Inventor： Hao Zhu , Alfred Rieder , Wolfgang Drahm , Yaoying Lin
Abstract: The method determines a characteristic passage time of a component of a flowing medium in a vibrating measuring tube of a Coriolis mass flow meter. The flow meter has the measuring tube, an exciter for exciting a bending vibration mode of the measuring tube, and a vibration sensor for sensing the measuring tube vibrations. The component is present inhomogenously in the medium and has a component density which deviates from an average density of the medium. The method includes feeding an excitation signal to the exciter with a natural frequency a bending vibration mode, ascertaining at least one first time profile of a signal amplitude of the first vibration sensor at a natural frequency of an anti-symmetrical bending vibration mode, and ascertaining the characteristic passage time on the basis of the first time profile of the signal amplitude at the natural frequency of the anti-symmetrical bending vibration mode.
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10.发明授权公开(公告)号：US11530967B2
公开(公告)日：2022-12-20
申请号：US16754107
申请日：2018-09-27
Applicant: Endress+Hauser Flowtec AG
Inventor： Ennio Bitto , Alfred Rieder , Yaoying Lin , Martin Josef Anklin
Abstract: The present disclosure relates to a transducer comprising a tube, a converter unit, an electromechanical exciter arrangement for stimulating and sustaining forced mechanical vibrations of the converter unit, and a sensor arrangement for detecting mechanical vibrations of the converter unit and for generating a vibration signal representing mechanical vibrations of the converter unit. The converter unit includes two connection elements connected to a displacer element and is inserted into the tube and connected thereto. The converter unit is configured as to be contacted by a fluid flowing through the tube and enabled to vibrate such that the connection elements and the displacer elements are proportionately elastically deformed. The transducer can be a constituent of a measuring system adapted to measure and/or monitor a flow parameter of the flowing fluid and further includes an electronic measuring and operating system coupled to the exciter arrangement and the sensor arrangement of the transducer.
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