专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

US20230384135A1 CORIOLIS MEASURING TRANSDUCER, AND CORIOLIS MEASURING DEVICE 审中-公开
公开(公告)号：US20230384135A1
公开(公告)日：2023-11-30
申请号：US18250118
申请日：2021-09-23
申请人： Endress+Hauser Flowtec AG
发明人： Hao Zhu , Ennio Bitto , Gerhard Eckert
IPC分类号： G01F1/84
CPC分类号： G01F1/8413 , G01F1/8477
摘要： A Coriolis measuring transducer comprises a pair of measuring tubes; an exciter; at least two sensors; and two manifolds. Each measuring tube has a first outer measuring tube bend and a second outer measuring tube bend. Each measuring tube pair has a first group of at least two fixing elements and a second group of at least two fixing elements. The fixing elements have, along the measuring tube centerline, a first separation from outer ends of the measuring tube bends of at most 0.7 bend length. The outer measuring tube bends have, in each case, at least one stiffening element, wherein the stiffening elements are arranged between the groups of fixing elements, wherein the stiffening elements have, in each case, a second separation from an inner end of their measuring tube bend of at least 0.2 bend length.

2. 发明授权

US11073499B2 Measuring transducer of vibration-type 有权
公开(公告)号：US11073499B2
公开(公告)日：2021-07-27
申请号：US16302769
申请日：2017-04-17
申请人： Endress+Hauser Flowtec AG
发明人： Alfred Rieder , Gerhard Eckert , Ennio Bitto , Hao Zhu
IPC分类号： G01F1/84 , G01N29/22 , G01N9/00 , G01N29/02
摘要： A measuring transducer includes a support body, a curved oscillatable measuring tube, an electrodynamic exciter, at least one sensor for registering oscillations of the measuring tube, and an operating circuit. The measuring tube has first and second bending oscillation modes, which are mirror symmetric to a measuring tube transverse plane and have first and second media density dependent eigenfrequencies f1, f3 with f3>f1. The measuring tube has a peak secant with an oscillation node in the second mirror symmetric bending oscillation mode. The operating circuit is adapted to drive the exciter conductor loop with a signal exciting the second mirror symmetric bending oscillation mode. The exciter conductor loop has an ohmic resistance RΩ and a mode dependent mutual induction reactance Rg3 which depends on the position of the exciter. The exciter is so positioned that a dimensionless power factor pc 3 = 4 · R Ω · R g ⁢ ⁢ 3 ( R Ω + R g ⁢ ⁢ 3 ) 2 has a value of not less than 0.2.

3. 发明授权

US10845227B2 Coriolis mass flow measuring device and/or density measuring device 有权
公开(公告)号：US10845227B2
公开(公告)日：2020-11-24
申请号：US15579979
申请日：2016-05-24
申请人： Endress + Hauser Flowtec AG
发明人： Hao Zhu , Alfred Rieder , Gerhard Eckert , Ennio Bitto
IPC分类号： G01F1/84 , G01F15/02 , G01N9/00
CPC分类号： G01F1/8477 , G01F1/8409 , G01F1/8413 , G01F15/02 , G01N9/002 , G01N2009/006
摘要： A Coriolis mass flow measuring device and/or density measuring device, comprising: at least two measuring tubes which extend mirror symmetrically to a first mirror plane; at least one exciter mechanism and at least one sensor arrangement for exciting and registering measuring tube oscillations; two terminally located collectors for joining the measuring tubes; a support body for connecting the collectors; and a number of plate-shaped couplers for pairwise connecting of the measuring tubes for forming an oscillator. The measuring tube centerlines of the measuring tubes have two oppositely bent sections and an intermediately lying straight section. The second bent section is arranged on the side of the straight section away from the second mirror plane. The projection of the measuring tube centerline between the intersection with the second mirror plane and the transition between the straight section and the second bent section onto the second mirror plane is not less than the separation between the second mirror plane and the measuring tube centerline at the transition between the straight section and the second bent section, wherein the first bent section has stiffening element, which annularly grip around the measuring tube.

4. 发明授权

US10724883B2 Method for ascertaining a physical parameter of a gas 有权
公开(公告)号：US10724883B2
公开(公告)日：2020-07-28
申请号：US15749888
申请日：2016-07-26
申请人： Endress+Hauser Flowtec AG
发明人： Hao Zhu , Alfred Rieder , Gerhard Eckert
IPC分类号： G01F1/84 , G01N9/00 , G01F15/04
摘要： The invention relates to a method for ascertaining a physical parameter of a gas using a measuring transducer having a measuring tube for conveying the gas, wherein the measuring tube is excitable to execute bending oscillations of different modes and eigenfrequencies, the method includes: ascertaining the eigenfrequency of the f1-mode and f3-mode; ascertaining preliminary density values for the gas based on the eigenfrequencies of the f1-mode and f3-mode; ascertaining a value for the velocity of sound of the gas, and/or, dependent on the velocity of sound and the eigenfrequency of a mode, at least one correcting term and/or density error for the preliminary density value; and/or a correcting term for a preliminary mass flow value for determining a corrected mass flow measured value based on the first preliminary density value, the second preliminary density value, the eigenfrequencies of the f1-mode and f3-mode.

5. 发明授权

US11573111B2 Flow measuring system having transducer temperatures that deviate from measuring point temperatures 有权
公开(公告)号：US11573111B2
公开(公告)日：2023-02-07
申请号：US16315834
申请日：2017-06-26
申请人： Endress + Hauser Flowtec AG
发明人： Alfred Rieder , Gerhard Eckert , Ennio Bitto , Hao Zhu
IPC分类号： G01F1/84 , G01F1/86 , G01N11/16
摘要： The measuring system includes a transducer apparatus with two tubes. Each tube is adapted to be flowed through by a fluid from an inlet end toward an outlet end and to be caused to vibrate. An electromechanical exciter mechanism excites and maintains mechanical oscillations of each of the tubes, and a sensor arrangement registers mechanical oscillations of at least one of the tubes. The transducer apparatus includes two temperature sensors each being mechanically and thermally conductively coupled with a wall of the tube, wherein each of the temperature sensors registers a measuring point temperature, and converts such into a temperature measurement signal temperature. A measuring and operating electronics (ME) generates a transducer temperature measured value representing a transducer apparatus temperature so that a magnitude of the transducer temperature measured value is greater than a magnitude of the measuring point temperature and less than a magnitude of the measuring point temperature.

6. 发明申请

US20220236160A1 VIBRATION-TYPE MEASURING TRANSDUCER AND VIBRONIC MEASURING SYSTEM FORMED THEREWITH 有权
公开(公告)号：US20220236160A1
公开(公告)日：2022-07-28
申请号：US17612540
申请日：2020-04-15
申请人： Endress+Hauser Flowtec AG
发明人： Hao Zhu , Gerhard Eckert , Ennio Bitto , Alfred Rieder , Marc Werner
IPC分类号： G01N9/00 , G01F1/84
摘要： A measuring transducer includes a tube assembly including two pair of structurally identical tubes, each connected at their respective ends to each of two flow dividers, thereby forming four parallel flow paths, and each including alternating, adjoining straight and arcuate segments, wherein each of the first and third arcuate segments has a segment length corresponding to an extended length of a virtual center line of the segment, an arc radius corresponding to a radius of the virtual center line and a center point angle corresponding to a ratio between the segment length and the arc radius, such that each of the first arcuate segments are identical in both shape and size, and such that each of the third arcuate segments are identical in both shape and size, wherein the measuring transducer further includes an exciter assembly and a sensor assembly, each connected to the tube assembly.

7. 发明授权

US10942058B2 Vibration-type fluid flow-rate measuring system having temperature compensation 有权
公开(公告)号：US10942058B2
公开(公告)日：2021-03-09
申请号：US16315826
申请日：2017-06-26
申请人： Endress + Hauser Flowtec AG
发明人： Alfred Rieder , Gerhard Eckert , Ennio Bitto , Hao Zhu
IPC分类号： G01F1/84 , G01F25/00 , G01F15/02 , G01N11/16 , G01N9/00
摘要： The measuring system comprises a transducer apparatus with two tubes, each having a lumen surrounded by a wall. A fluid flows through each tube, while the tube is vibrated. An electromechanical-exciter mechanism maintains mechanical oscillations of each of the tubes, and a sensor arrangement registers mechanical oscillations of at least one of the tubes. The transducer apparatus includes two temperature sensors, each being mechanically and thermally conductively coupled with a wall of a respective one of the tubes and adapted to register a measuring point temperature and to convert such into a temperature measurement signal. A measuring- and operating electronics is adapted, with application of the temperature measurement signals, to generate a transducer temperature measured value, which represents a transducer apparatus temperature, which deviates both from each of the measuring point temperatures, such that a magnitude of the transducer temperature measured value is between the measuring point temperatures.

8. 发明授权

US10866129B2 Vibration-type sensor for measuring the density and/or mass flow rate of a medium 有权
公开(公告)号：US10866129B2
公开(公告)日：2020-12-15
申请号：US16471648
申请日：2017-11-22
申请人： Endress+Hauser Flowtec AG
发明人： Hao Zhu , Alfred Rieder , Ennio Bitto , Gerhard Eckert
IPC分类号： G01F1/84 , G01N9/00
CPC分类号： G01F1/8477 , G01F1/8413 , G01F1/8422 , G01N9/002 , G01N2009/006
摘要： The present disclosure relates to a vibration-type sensor for measuring the density and/or the mass flow rate of a medium, having at least one first oscillator, the sensor including: a curved first measuring tube; a curved second measuring tube; at least one first elastic vibration coupler that couples the first measuring tube and the second measuring tube to each; and at least one exciter for exciting oscillator vibrations in a bending vibration mode. The oscillator has a first oscillator resonant frequency for when the measuring tubes vibrate approximately in phase in the bending vibration mode and a greater second oscillator resonant frequency for when the measuring tubes vibrate approximately in counterphase in the bending vibration mode. The first and second measuring tubes have resonant frequencies differing from their arithmetic mean by no more than 8%, no more than 4%, no more than 2% or no more than 1%.

9. 发明授权

US10768034B2 Measurement sensor of the vibrational type for measuring the density and/or the mass flow of a flowing medium 有权
公开(公告)号：US10768034B2
公开(公告)日：2020-09-08
申请号：US16471656
申请日：2017-11-22
申请人： Endress+Hauser Flowtec AG
发明人： Hao Zhu , Alfred Rieder , Ennio Bitto , Gerhard Eckert
IPC分类号： G01F1/84 , G01N9/00
摘要： The present disclosure relates to a measurement sensor of the vibrational type for measuring the density and/or the mass flow of a medium, including: two oscillators; an exciter for stimulating oscillator vibrations; and two vibration sensors, wherein the first oscillator includes first and second measuring tubes and a first resilient vibration coupler for coupling the measuring tubes, wherein the second oscillator includes third and fourth measuring tubes and a second resilient vibration coupler for coupling the third and fourth measuring tubes, wherein perpendicularly to a measuring tube transverse plane a measurement sensor longitudinal plane extends between the third and the fourth measuring tube, wherein the first and third measuring tube relative to a measurement sensor longitudinal plane are in mirror symmetry relative to one another, and wherein the second and fourth measuring tube relative to the measurement sensor longitudinal plane are in mirror symmetry relative to one another.

10. 发明授权

US10466151B2 Method for measuring density of a fluid 有权
公开(公告)号：US10466151B2
公开(公告)日：2019-11-05
申请号：US15540046
申请日：2015-11-18
申请人： Endress + Hauser Flowtec AG
发明人： Gerhard Eckert , Alfred Rieder , Hao Zhu
IPC分类号： G01N9/00 , G01N11/04 , G01N11/16 , G01F1/84
摘要： A method is provided for measuring density of a fluid by means of at least one at least sectionally curved measuring tube. The measuring tube is adapted to be flowed through by the fluid and concurrently to be caused to vibrate over a wanted oscillatory length, namely a tube length measured from a first tube end to a second tube end, a length which is greater than a minimum separation of the second tube end from the first tube end. According to the invention, among other things, also a tilt measured value representing an inclination of the at least one measuring tube in the static resting position relative to a local acceleration of gravity is ascertained, in such a manner that such represents an angle of intersection between a direction vector of an imaginary first reference axis (y-axis) and a direction vector of an imaginary second reference axis (g-axis). The first reference axis is so selected that it is perpendicular to an imaginary third reference axis (z-axis) imaginarily connecting the first tube end and the second tube end and points in the direction of a peak of the at least one measuring tube farthest from the third reference axis in the static resting position, while the second reference axis is so selected that it extends through a shared intersection of the first and third reference axes and points in the vertical direction, namely in the direction of the local acceleration of gravity. The tilt measured value is used together with a parameter measured value representing an oscillation frequency of the at least one measuring tube for ascertaining at least one density measured value representing the density of the fluid.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式