CA2590807A1 - Vibratory measurement transducer - Google Patents
Vibratory measurement transducer Download PDFInfo
- Publication number
- CA2590807A1 CA2590807A1 CA002590807A CA2590807A CA2590807A1 CA 2590807 A1 CA2590807 A1 CA 2590807A1 CA 002590807 A CA002590807 A CA 002590807A CA 2590807 A CA2590807 A CA 2590807A CA 2590807 A1 CA2590807 A1 CA 2590807A1
- Authority
- CA
- Canada
- Prior art keywords
- pickup
- measurement
- tube
- tubes
- measurement pickup
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005259 measurement Methods 0.000 title claims 48
- 230000008878 coupling Effects 0.000 claims abstract 15
- 238000010168 coupling process Methods 0.000 claims abstract 15
- 238000005859 coupling reaction Methods 0.000 claims abstract 15
- 238000005452 bending Methods 0.000 claims abstract 4
- 230000005520 electrodynamics Effects 0.000 claims abstract 2
- 230000010355 oscillation Effects 0.000 claims 22
- 230000009969 flowable effect Effects 0.000 claims 3
- 230000010358 mechanical oscillation Effects 0.000 claims 3
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 239000000463 material Substances 0.000 claims 2
- 239000010959 steel Substances 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
- G01F1/8413—Coriolis or gyroscopic mass flowmeters constructional details means for influencing the flowmeter's motional or vibrational behaviour, e.g., conduit support or fixing means, or conduit attachments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/845—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits
- G01F1/8468—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits
- G01F1/8472—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having curved measuring conduits, i.e. whereby the measuring conduits' curved center line lies within a plane
- G01F1/8477—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having curved measuring conduits, i.e. whereby the measuring conduits' curved center line lies within a plane with multiple measuring conduits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H13/00—Measuring resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
- G01H3/10—Amplitude; Power
- G01H3/12—Amplitude; Power by electric means
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Measuring Volume Flow (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention relates to a measuring sensor comprising a sensor housing (10) with a plurality of natural vibratory modes, and at least one first sensor tube (4) which is held in the sensor housing (10) in such a way that it vibrates intermittently, and is used to guide at least one partial volume of the medium to be measured. Said measuring sensor also comprises an electromechanical, especially electrodynamic, exciter arrangement (60) for generating and/or maintaining mechanical vibrations of the sensor tube (4), and a sensor arrangement which reacts to movements of the sensor tube (4), especially bending vibrations, and is used to generate at least one vibratory measuring signal (SVb) representing vibrations of the sensor tube (4). In order to improve the vibratory characteristics and thus the measuring precision of the measuring sensor, at least three coupling elements (217) connecting the first and the second sensor tubes (4,5) on the inlet side, and at least three coupling elements (218) connecting the first and second sensor tubes (4,5) on the outlet side are provided. The use of at least six coupling elements enables vibratory measuring sensors with high measuring precision to be produced, even for wide nominal widths of more than 150 mm, especially while largely maintaining already established and proven structural forms.
Claims (30)
1. Measurement pickup of vibration-type for measuring a flowable medium, especially a gas, liquid, powder or other flowable substance, conveyed in a pipeline, comprising:
- a pickup housing (10), which is mechanically coupled with the pipeline via an inlet end and an outlet end;
- at least one first pickup tube (4, 5) held in an oscillatable manner in the pickup housing (10) and vibrating at least at times, and a second pickup tube (4, 5) mechanically coupled with the first pickup tube (4, 5) and likewise vibrating at least at times;
-- wherein the first pickup tube (4) and the second pickup tube (5) execute during operation, at least at times, bending oscillations each about an imaginary oscillation axis essentially parallel to a longitudinal axis (L) of the measurement pickup, and -- wherein at least the first pickup tube (4) is embodied as a first measuring tube communicating with the pipeline and serving to convey the medium to be measured;
- an electromechanical, especially electrodynamic, exciter arrangement (60) acting on at least one of the pickup tubes (4, 5) for producing and/or maintaining mechanical oscillations of the at least one pickup tube (4, 5);
- a sensor arrangement reacting to movements at least of the first pickup tube (4), especially to bending oscillations, for producing at least one oscillation measurement signal (s vb) representing oscillations of the first pickup tube (4); as well as - at least three coupling elements (217a, 217b, 217c) connecting the first and the second pickup tubes (4, 5) together at their inlet ends, as well as at least three coupling elements (218a, 218b, 218c) connecting the first and the second pickup tubes (4, 5) together at their outlet ends.
- a pickup housing (10), which is mechanically coupled with the pipeline via an inlet end and an outlet end;
- at least one first pickup tube (4, 5) held in an oscillatable manner in the pickup housing (10) and vibrating at least at times, and a second pickup tube (4, 5) mechanically coupled with the first pickup tube (4, 5) and likewise vibrating at least at times;
-- wherein the first pickup tube (4) and the second pickup tube (5) execute during operation, at least at times, bending oscillations each about an imaginary oscillation axis essentially parallel to a longitudinal axis (L) of the measurement pickup, and -- wherein at least the first pickup tube (4) is embodied as a first measuring tube communicating with the pipeline and serving to convey the medium to be measured;
- an electromechanical, especially electrodynamic, exciter arrangement (60) acting on at least one of the pickup tubes (4, 5) for producing and/or maintaining mechanical oscillations of the at least one pickup tube (4, 5);
- a sensor arrangement reacting to movements at least of the first pickup tube (4), especially to bending oscillations, for producing at least one oscillation measurement signal (s vb) representing oscillations of the first pickup tube (4); as well as - at least three coupling elements (217a, 217b, 217c) connecting the first and the second pickup tubes (4, 5) together at their inlet ends, as well as at least three coupling elements (218a, 218b, 218c) connecting the first and the second pickup tubes (4, 5) together at their outlet ends.
2. Measurement pickup as claimed in the preceding claim, wherein the two pickup tubes (4, 5) oscillate during operation essentially with opposite phase.
3. Measurement pickup as claimed in one of the preceding claims, wherein each of the two pickup tubes (4) has an at least sectionally curved, especially essentially U-, V- or trapezoidally-shaped, central, middle tube segment (41, 51).
4. Measurement pickup as claimed in claim 3, wherein the inlet-end coupling elements (217a, 217b, 217c) and the outlet-end coupling elements (218a, 218b, 218c) are so arranged and fixed on the two pickup tubes (4, 5) that those clamping forces produced by the vibrating pickup tubes (4, 5) within the pickup housing are minimized, which act predominantly in the direction of that principal axis of inertia (H) of the measurement pickup, that runs essentially perpendicularly to the longitudinal axis (L) and that lies essentially in an imaginary central plane of the measurement pickup extending between the two curved middle tube segments (41, 51) of the pickup tubes (4, 5).
5. Measurement pickup as claimed in one of the claims 3 or 4, wherein each of the two pickup tubes (4) has at an inlet end a straight inlet tube segment (42, 52) extending essentially parallel to the imaginary oscillation axis, each inlet tube segment (42, 52) communicates with its middle tube segment via an inlet-end, curved, intermediate tube segment (43, 53) and wherein each of the two pickup tubes (4, 5) has at an outlet end a straight outlet tube segment (44, 54) extending essentially parallel to the imaginary oscillation axis and each outlet tube segment (44, 54) communicates with its middle tube segment (41, 51) via an outlet-end, curved, intermediate tube segment (45, 55).
6. Measurement pickup as claimed in claim 5, wherein at least one first and at least one second coupling element (217a, 217b) of the coupling elements (217a, 217b, 217c), connecting the two pickup tubes (4, 5) on the inlet end with one another, are each affixed to the inlet-end, intermediate tube segments (43, 53) of the first and second pickup tubes, and wherein at least one first and at least one second coupling element (218a, 218b) of the coupling elements (218a, 218b, 218c), connecting the two pickup tubes (4, 5) on the outlet end with one another, are each affixed to the outlet-end, intermediate tube segments (45, 55) of the first and second pickup tubes (4, 5).
7. Measurement pickup as claimed in claim 6, wherein at least one, third coupling element (217c) of the coupling elements (217a, 217b, 217c) connecting the two pickup tubes (4, 5) together on the inlet end is fixed to each of the inlet-end tube segments (42, 52) of the first and second pickup tubes (4, 5) and wherein at least one, third coupling element (218c) of the coupling elements (218a, 218b, 218c) connecting the two pickup tubes (4, 5) together on the outlet end is fixed to each of the outlet-end tube segments (44, 54) of the first and second pickup tubes (4, 5).
8. Measurement pickup as claimed in one of the preceding claims, wherein the first pickup tube (4) runs essentially parallel to the second pickup tube (5).
9. Measurement pickup as claimed in one of the preceding claims, wherein the first measurement pickup tube (4) is essentially constructed identically to the second measurement pickup tube (5).
10. Measurement pickup as claimed in one of the preceding claims, further comprising a first distributor piece (11) connecting the first and second pickup tubes (4, 5) together at the inlet end, as well as a second distributor piece (12) connecting the first and second pickup tubes (4, 5) together at the outlet end, wherein the second pickup tube likewise is constructed as a second measuring tube serving for the conveying of the medium to be measured and for communicating with the pipeline.
11. Measurement pickup as claimed in the preceding claim, wherein each of the two distributor pieces (11, 12) has a mass of more than 10 kg, especially more than 20 kg.
12. Measurement pickup as claimed in one of the preceding claims, wherein the pickup housing (10) includes a support element (6), especially one of steel, with which the at least one pickup tube (4) is mechanically connected at its inlet and outlet ends.
13. Measurement pickup as claimed in the preceding claim, wherein the support element (6) is constructed in the form of a support cylinder, especially a tubular support cylinder, which is at least partially laterally open and connected with the at least one pickup tube (4) such that the at least one, curved tube segment (41) protrudes laterally out of the support cylinder.
14. Measurement pickup as claimed in the preceding claim, wherein the support element (6) has a mass of at least 70 kg, especially more than 140 kg, and/or a length of at least 1000 mm, especially of more than 1200 mm.
15. Measurement pickup as claimed in one of the preceding claims, wherein each of the pickup tubes (4, 5) and the pickup housing (10), is made, at least in part, of steel, especially stainless steel.
16. Measurement pickup as claimed in one of the preceding claims, wherein each of the pickup tubes (4, 5) has a mass of at least 10 kg, especially of greater than 25 kg.
17. Measurement pickup as claimed in one of the preceding claims, wherein each of the pickup tubes (4, 5) has an inner diameter of at least 80 mm, especially greater than 100 mm.
18. Measurement pickup as claimed in one of the preceding claims, wherein each of the pickup tubes (4, 5) has a cross section whose area moment of inertia is greater than 2 × 10 4 mm3, especially greater than 4 × 10 6 mm4.
19. Measurement pickup as claimed in one of the preceding claims, wherein each of the pickup tubes (4, 5) has a cross section whose section modulus resisting bending is greater than 10 6 mm4, especially greater than 2 × 10 6 mm4.
20. Measurement pickup as claimed in one of the preceding claims, wherein each of the pickup tubes (4, 5) has a stretched length of at least 1000 mm, especially greater than 1500 mm.
21. Measurement pickup as claimed in one of the claims 3 to 20, wherein each of the middle tube segments of the two pickup tubes (4, 5) has an essentially V-shape and wherein each of the middle tube segments of the two pickup tubes (4, 5) has a peak with an included angle smaller than 150°, especially smaller than 120°.
22. Measurement pickup as claimed in one of the preceding claims, wherein an internal oscillation system of the measurement pickup is formed by the two pickup tubes (4, 5), the medium at least instantaneously conveyed therein, and at least in part by the exciter and sensor arrangements (60, 70), and wherein the internal oscillation system, driven by the exciter arrangement (60), executes during operation of the measurement pickup, at least at times, mechanical oscillations, especially in the form of lateral oscillations, with at least one wanted oscillation frequency (F n), which depends both on the size, shape and material of the pickup tube (4) and on an instantaneous density of the medium, and which is changeable during operation of the measurement pickup, within a predetermined wanted frequency band (.DELTA.F n) having upper and lower limit frequencies.
23. Measurement pickup as claimed in claim 22, wherein a total mass of the internal oscillation system amounts to at least 70 kg, and especially during operation, at least at times, to more than 90 kg.
24. Measurement pickup as claimed in one of the claims 10 to 21, wherein an external oscillation system of the measurement pickup is formed by the pickup housing and at least by the distributor pieces, while an internal oscillation system of the measurement pickup is formed by the two pickup tubes (4, 5), the medium at least instantaneously conveyed therein and at least in part by the exciter and sensor arrangements (60, 70), and wherein the internal oscillation system, driven by the exciter arrangement (60), executes during operation of the measurement pickup, at least at times, mechanical oscillations, especially in the form of lateral oscillations, having at least one wanted oscillation frequency (F n), which depends both on the size, shape and material of the pickup tube and on an instantaneous density of the medium, and which is changeable during operation of the measurement pickup within a predetermined wanted frequency band (.DELTA.F n) having lower and upper limit frequencies.
25. Measurement pickup as claimed in claim 24, wherein a total mass of the external oscillation system amounts to at least 200 kg, especially more than 300 kg.
26. Measurement pickup as claimed in claim 24 or 25, wherein a mass ratio of a total mass of the external oscillation system to a total mass of the internal oscillation system is, during operation, at least at times, smaller than 3, especially smaller than 2.5.
27. Measurement pickup as claimed in the preceding claim, wherein the mass ratio of the total mass of the external oscillation system to the total mass of the internal oscillation system is continuously smaller than 3.
28. Measurement pickup as claimed in one of the preceding claims, wherein an installed mass to nominal diameter ratio of an installed mass of the total measurement pickup to a nominal diameter of the measurement pickup, which corresponds to a caliber of the pipeline in whose course the measurement pickup is to be installed, amounts to at least 1.5, especially more than 2.
29. Measurement pickup as claimed in one of the preceding claims, wherein the installed mass of the total measurement pickup is greater than 200 kg, especially greater than 400 kg.
30. Use of the measurement pickup as claimed in one of the preceding claims for measuring a flowable medium conveyed in a pipeline having a caliber greater than 150 mm, especially greater than 250 mm or more and/or for measuring a mass flowrate of a medium flowing through a pipeline with a rate which is, at least at times, greater than 900 t/h, especially, at least at times, greater than 1200 t/h.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410060115 DE102004060115A1 (en) | 2004-12-13 | 2004-12-13 | Transducer of the vibration type |
| DE102004060115.1 | 2004-12-13 | ||
| PCT/EP2005/056328 WO2006063932A1 (en) | 2004-12-13 | 2005-11-29 | Vibratory measuring sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2590807A1 true CA2590807A1 (en) | 2006-06-22 |
| CA2590807C CA2590807C (en) | 2012-07-17 |
Family
ID=35717468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2590807A Expired - Fee Related CA2590807C (en) | 2004-12-13 | 2005-11-29 | Vibratory measurement transducer |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1825230B1 (en) |
| CN (1) | CN101080614B (en) |
| CA (1) | CA2590807C (en) |
| DE (1) | DE102004060115A1 (en) |
| DK (1) | DK1825230T3 (en) |
| RU (1) | RU2369841C2 (en) |
| WO (1) | WO2006063932A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008007742A1 (en) * | 2007-04-25 | 2008-11-06 | Krohne Ag | Coriolis mass flowmeter |
| US8336396B2 (en) * | 2009-03-11 | 2012-12-25 | Endress + Hauser Flowtec Ag | Measuring transducer of vibration-type, as well as an in-line measuring device having such a measuring transducer |
| DE102009028007A1 (en) * | 2009-07-24 | 2011-01-27 | Endress + Hauser Flowtec Ag | Measuring transducer of the vibration type and measuring device with such a transducer |
| WO2012028425A1 (en) * | 2010-09-02 | 2012-03-08 | Endress+Hauser Flowtec Ag | Measurement system having a vibration-type measurement sensor |
| CN103884395A (en) * | 2012-12-21 | 2014-06-25 | 上海一诺仪表有限公司 | Eight-pass Coriolis mass flowmeter sensor |
| DE102014117586A1 (en) | 2014-12-01 | 2016-06-02 | Endress+Hauser Flowtec Ag | Vibration-type transducers |
| NL2016092B1 (en) * | 2016-01-14 | 2017-07-24 | Berkin Bv | Coriolis flowsensor. |
| DE102019134605A1 (en) * | 2019-12-16 | 2021-06-17 | Endress+Hauser Flowtec Ag | Measuring tube arrangement and carrier unit of a Coriolis flow meter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5926096A (en) * | 1996-03-11 | 1999-07-20 | The Foxboro Company | Method and apparatus for correcting for performance degrading factors in a coriolis-type mass flowmeter |
| US6311136B1 (en) * | 1997-11-26 | 2001-10-30 | Invensys Systems, Inc. | Digital flowmeter |
| US6308580B1 (en) * | 1999-03-19 | 2001-10-30 | Micro Motion, Inc. | Coriolis flowmeter having a reduced flag dimension |
| US6450042B1 (en) * | 2000-03-02 | 2002-09-17 | Micro Motion, Inc. | Apparatus for and a method of fabricating a coriolis flowmeter formed primarily of plastic |
| DK1154243T3 (en) * | 2000-05-12 | 2007-04-02 | Flowtec Ag | Coriolis mass flow meter with two curved measuring tubes |
| EP1248084B1 (en) * | 2001-04-05 | 2017-05-31 | Endress + Hauser Flowtec AG | Coriolis mass flow rate sensor with two curved measuring tubes |
| US6415668B1 (en) * | 2001-07-23 | 2002-07-09 | Fmc Technologies, Inc. | De-coupling extraneous modes of vibration in a coriolis mass flowmeter |
| KR100541347B1 (en) * | 2001-09-21 | 2006-01-11 | 가부시키가이샤 오바루 | Arch-shaped tube type coriolis meter and method of determining shape of the coriolis meter |
| US6782762B2 (en) * | 2002-09-10 | 2004-08-31 | Direct Measurement Corporation | Coriolis flowmeter with improved zero stability |
-
2004
- 2004-12-13 DE DE200410060115 patent/DE102004060115A1/en not_active Withdrawn
-
2005
- 2005-11-29 CN CN2005800428704A patent/CN101080614B/en active Active
- 2005-11-29 CA CA2590807A patent/CA2590807C/en not_active Expired - Fee Related
- 2005-11-29 RU RU2007126673/28A patent/RU2369841C2/en not_active IP Right Cessation
- 2005-11-29 DK DK05813345.5T patent/DK1825230T3/en active
- 2005-11-29 WO PCT/EP2005/056328 patent/WO2006063932A1/en active Application Filing
- 2005-11-29 EP EP05813345.5A patent/EP1825230B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004060115A1 (en) | 2006-06-14 |
| RU2369841C2 (en) | 2009-10-10 |
| CA2590807C (en) | 2012-07-17 |
| CN101080614B (en) | 2010-05-26 |
| WO2006063932A1 (en) | 2006-06-22 |
| EP1825230B1 (en) | 2014-03-12 |
| CN101080614A (en) | 2007-11-28 |
| DK1825230T3 (en) | 2014-05-26 |
| RU2007126673A (en) | 2009-01-20 |
| EP1825230A1 (en) | 2007-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20181129 |