CA2469216A1 - Microwave measuring device for detecting the charge of a two-phase flow - Google Patents
Microwave measuring device for detecting the charge of a two-phase flow Download PDFInfo
- Publication number
- CA2469216A1 CA2469216A1 CA002469216A CA2469216A CA2469216A1 CA 2469216 A1 CA2469216 A1 CA 2469216A1 CA 002469216 A CA002469216 A CA 002469216A CA 2469216 A CA2469216 A CA 2469216A CA 2469216 A1 CA2469216 A1 CA 2469216A1
- Authority
- CA
- Canada
- Prior art keywords
- measuring device
- feed duct
- fact
- microwave measuring
- rods
- 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
- 230000005514 two-phase flow Effects 0.000 title claims abstract 3
- 239000004020 conductor Substances 0.000 claims abstract 4
- 239000007787 solid Substances 0.000 claims abstract 4
- 239000012530 fluid Substances 0.000 claims abstract 3
- 239000002245 particle Substances 0.000 claims abstract 3
- 239000007788 liquid Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000003245 coal Substances 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000010287 polarization Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
-
- 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
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—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
- G01F1/74—Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Measuring Volume Flow (AREA)
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Measuring Phase Differences (AREA)
Abstract
The invention relates to a microwave measuring device for detecting the charge of a two-phase flow with a gaseous carrier medium containing small and minuscule solid and /or fluid particles and for detecting gas contained in a fluid flow, preferably by means of waveguide carrier waves. A preferred application of the invention is the detection of solid particles contained in the flow of gas of voluminous pneumatic solid matter transport systems used, for example, for pulverized coal furnaces of coal power stations. The inventive microwave measuring device is provided with field rods, which protrude into the inside of the feed pipe, are arranged before and after a measuring section formed by a transmission antenna and a reception antenna, said rods interacting with the feed pipe made of conductive material as a resonator for microwaves injected into the feed pipe via the transmission antenna, whereby microwaves that differ from the injected microwaves in their plane of polarization and/or phase as a result of diffraction, superposition, and/or reflection outside the measuring section are essentially short-circuited in order to prevent the results of the measurement from being distorted. The inventive device has the particular advantage of being simple to build and easy to install even in voluminous and branched feed pipe systems.
Claims (13)
1. A microwave measuring device for defining the load of a two-phase flow with a gaseous carrier medium with small and minute solids and/or liquid particles as well as for defining the gas contained in a fluid flow, provided with a transmitting and receiving antenna arranged, in longitudinal direction of a feed duct system of electrically conductive material conducting the two-phase mixture, at a distance from each other to form a measuring path, characterised by the fact that in longitudinal direction ahead of and behind the measuring path (S) in alignment therewith field rods (4,5) of electrically conductive material are arranged into the interior of the feed duct (1) such that the field rods (4,5) and the feed duct section (F a) of electrically conductive material disposed between them in the longitudinal direction of the feed duct (1 ) act as a resonator for injected microwaves.
2. The microwave measuring device in accordance with claim 1, characterised by the fact that the field rods (4,5) are disposed approximately within the cross-sectional surface of the feed duct section (F a) and are disposed identically or oppositely.
3. The microwave measuring device in accordance with claim 1 or 2, characterised by the fact that are arranged to point approximately to the center of the cross-sectional surface of the feed duct section (F a) or to intersect it.
4. The microwave measuring device in accordance with one of the preceding claims, characterised by the fact that the field rods (4,5) extending into the interior of the feed duct (1) extend over at least half and preferably more than two-thirds across the cross-sectional surface of the feed duct section (F a).
5. The microwave measuring device in accordance with one of the preceding claims, characterised by the fact that auxiliary field rods (6,7) are arranged ahead of and behind the feed duct section (F a) limited by the field rods (4,5).
6. The microwave measuring device in accordance with claim 5, characterised by the fact that the auxiliary field rods (6,7) are arranged parallel to the field rods (4,5) and in the direction thereof, or opposite thereto.
7. The microwave measuring device in accordance with claim 5 or 6, characterised by the fact that the auxiliary field rods (6,7) are arranged relative to the field rods (4,5) at a distance (F b,F c) of about one eighth of the wavelength of the resonance frequency of the resonator (formed by the field rods (4,5) and the feed duct section (F a).
8. The microwave measuring device in accordance with one of claims 5 to 7, characterised by the fact that the length of the auxiliary field rods (6,7) corresponds to the length of the field rods (4,5).
9. The microwave measuring device in accordance with one of the preceding claims, characterised by the fact that approximately in the middle between transmitting and receiving antenna (2,3) an auxiliary field rod ((8) is arranged in the cross-sectional surface of the feed duct section (1) rotated about 90° relative to the field rods (4,5).
10. The microwave measuring device in accordance with one of the preceding claims, characterised by the fact that instead of one field rod (4,5) in the given cross-sectional surface of the feed duct section (F a) two or more field rods are arranged parallel to each other.
11. The microwave measuring device in accordance with claim 1, characterised by the fact that the measuring path (S) disposed between transmitting and receiving antenna (2,3) corresponds to .8 to 3 times, preferably 1.5 times, the mean diameter (D) of the feed duct section (F a).
12. The microwave measuring device according to claim 11, characterised by the fact that the given distance (A,B) between field rod (4) and transmitting antenna (2) or receiving antenna (3) and field rod (5) corresponds to about the mean diameter (D) of the feed duct section (F a).
13. The microwave measuring device according to claim 5 and 11 or 12 for defining the load by means of a waveguide fundamental wave, characterised by the fact that the distance (F b,F c) between the auxiliary field rods (6,7) and the field rods (4,5) corresponds to the mean diameter (D) of the feed duct section (F a).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10164107A DE10164107C1 (en) | 2001-12-24 | 2001-12-24 | Microwave measuring device for determining the loading of a two-phase flow |
| DE10164107.9 | 2001-12-24 | ||
| PCT/DE2002/004593 WO2003056316A1 (en) | 2001-12-24 | 2002-12-18 | Microwave measuring device for detecting the charge of a two-phase flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2469216A1 true CA2469216A1 (en) | 2003-07-10 |
| CA2469216C CA2469216C (en) | 2010-09-07 |
Family
ID=7710961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2469216A Expired - Fee Related CA2469216C (en) | 2001-12-24 | 2002-12-18 | Microwave measuring device for detecting the charge of a two-phase flow |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP1459055B1 (en) |
| JP (1) | JP4237629B2 (en) |
| KR (1) | KR100677927B1 (en) |
| CN (1) | CN100429506C (en) |
| AT (1) | ATE308040T1 (en) |
| AU (1) | AU2002360901B2 (en) |
| CA (1) | CA2469216C (en) |
| DE (2) | DE10164107C1 (en) |
| DK (1) | DK1459055T3 (en) |
| ES (1) | ES2252536T3 (en) |
| MX (1) | MXPA04006259A (en) |
| PL (1) | PL203750B1 (en) |
| WO (1) | WO2003056316A1 (en) |
| ZA (1) | ZA200404776B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8958068B2 (en) | 2011-05-24 | 2015-02-17 | Krohne Messtechnik Gmbh | Device for determining the volume fraction of at least one component of a multi-phase medium |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006070948A1 (en) * | 2004-12-28 | 2006-07-06 | Sumitomo Chemical Co | Gas detection system |
| WO2008029522A1 (en) * | 2006-09-06 | 2008-03-13 | Yokohama National University | Passive intermodulation distortion measuring method and system |
| EP2742287B1 (en) * | 2011-07-13 | 2015-09-30 | Promecon Prozess- und Messtechnik Conrads GmbH | Firing system of a coal-fired power station with device for controlling the fuel-air ratio in the combustion of ground coal and method of operating the firing system |
| CN102435237B (en) * | 2011-10-27 | 2013-01-02 | 天津大学 | Gas-solid two-phase flow parameter detector |
| DE102012217274A1 (en) * | 2012-09-25 | 2014-03-27 | Siemens Aktiengesellschaft | Device for determining properties of a medium flowing through a cross-sectional area |
| KR101424979B1 (en) | 2013-05-24 | 2014-08-13 | 한국기계연구원 | Measurement method of a two-phase flow of effective density and void fraction |
| JP6461664B2 (en) * | 2015-03-20 | 2019-01-30 | 日野自動車株式会社 | Exhaust gas sensor |
| CN105424564A (en) * | 2015-11-05 | 2016-03-23 | 东北电力大学 | Tuning method for microwave measurement parameters of pulverized-coal concentration |
| DE102016013220B3 (en) | 2016-11-04 | 2018-05-09 | PROMECON Prozeß- und Meßtechnik Conrads GmbH | Microwave measuring arrangement for determining the loading of a two-phase flow |
| DE102016125809A1 (en) * | 2016-12-28 | 2018-06-28 | Endress+Hauser Flowtec Ag | Measuring arrangement for analyzing properties of a flowing medium by means of microwaves |
| CN106768114B (en) * | 2016-12-30 | 2019-07-19 | 光力科技股份有限公司 | Coal dust on-line monitoring system and device |
| ES2904567T3 (en) * | 2017-12-04 | 2022-04-05 | Promecon Gmbh | Endoscope Camera Coupler |
| DE102018003608B3 (en) * | 2018-05-03 | 2019-05-29 | Promecon Process Measurement Control Gmbh | Wind power machine |
| DE102019131504A1 (en) | 2019-11-21 | 2021-05-27 | Endress + Hauser Flowtec Ag | Antenna arrangement for radiation of microwaves and measuring arrangement with at least one such antenna arrangement |
| CN111521225A (en) * | 2020-03-20 | 2020-08-11 | 北京国利衡清洁能源科技(集团)有限公司 | Orifice gas flow measuring device and measuring method thereof |
| CN113029259B (en) * | 2021-02-02 | 2023-06-16 | 辽宁工程技术大学 | Gas-liquid two-phase flow measuring device based on microwaves and rectangular flowmeter, internal transmission line arrangement method and flow measuring method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5101163A (en) * | 1989-10-04 | 1992-03-31 | Agar Corporation Ltd. | Oil/water measurement |
| GB9122210D0 (en) * | 1991-10-18 | 1991-11-27 | Marconi Gec Ltd | Method for measurement of the gas and water content in oil |
| DE4406046C2 (en) * | 1994-02-24 | 1997-11-20 | Wagner Int | Device and method for measuring a powder mass flow |
| DE19650112C1 (en) * | 1996-12-03 | 1998-05-20 | Wagner Int | Device and method for measuring a powder mass flow |
| DE19728612C2 (en) * | 1997-07-04 | 2001-11-29 | Promecon Prozess & Messtechnik | Method for determining the amount of solid and / or liquid material contained in a two-phase flow with gaseous carrier medium |
| DE29902592U1 (en) * | 1999-02-13 | 1999-06-17 | pro/M/tec Harrer & Kassen GmbH, 75339 Höfen | High frequency rod sensor |
| CA2391981C (en) * | 1999-11-19 | 2005-11-01 | Rhino Analytics, Llc | Interferometric microwave sensor |
-
2001
- 2001-12-24 DE DE10164107A patent/DE10164107C1/en not_active Expired - Fee Related
-
2002
- 2002-12-18 KR KR1020047010055A patent/KR100677927B1/en active IP Right Grant
- 2002-12-18 ES ES02795004T patent/ES2252536T3/en not_active Expired - Lifetime
- 2002-12-18 AT AT02795004T patent/ATE308040T1/en active
- 2002-12-18 AU AU2002360901A patent/AU2002360901B2/en not_active Ceased
- 2002-12-18 WO PCT/DE2002/004593 patent/WO2003056316A1/en active IP Right Grant
- 2002-12-18 EP EP02795004A patent/EP1459055B1/en not_active Expired - Lifetime
- 2002-12-18 CA CA2469216A patent/CA2469216C/en not_active Expired - Fee Related
- 2002-12-18 MX MXPA04006259A patent/MXPA04006259A/en active IP Right Grant
- 2002-12-18 PL PL369876A patent/PL203750B1/en unknown
- 2002-12-18 DK DK02795004T patent/DK1459055T3/en active
- 2002-12-18 CN CNB028278771A patent/CN100429506C/en not_active Expired - Fee Related
- 2002-12-18 DE DE50204727T patent/DE50204727D1/en not_active Expired - Lifetime
- 2002-12-18 JP JP2003556790A patent/JP4237629B2/en not_active Expired - Fee Related
-
2004
- 2004-06-17 ZA ZA2004/04776A patent/ZA200404776B/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8958068B2 (en) | 2011-05-24 | 2015-02-17 | Krohne Messtechnik Gmbh | Device for determining the volume fraction of at least one component of a multi-phase medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4237629B2 (en) | 2009-03-11 |
| AU2002360901B2 (en) | 2007-10-25 |
| MXPA04006259A (en) | 2004-10-04 |
| CN1618012A (en) | 2005-05-18 |
| ZA200404776B (en) | 2004-11-24 |
| ES2252536T3 (en) | 2006-05-16 |
| KR20040068347A (en) | 2004-07-30 |
| CN100429506C (en) | 2008-10-29 |
| WO2003056316A1 (en) | 2003-07-10 |
| ATE308040T1 (en) | 2005-11-15 |
| JP2005513499A (en) | 2005-05-12 |
| DE50204727D1 (en) | 2005-12-01 |
| EP1459055A1 (en) | 2004-09-22 |
| AU2002360901A1 (en) | 2003-07-15 |
| PL203750B1 (en) | 2009-11-30 |
| DE10164107C1 (en) | 2003-09-18 |
| KR100677927B1 (en) | 2007-02-05 |
| DK1459055T3 (en) | 2006-03-06 |
| EP1459055B1 (en) | 2005-10-26 |
| PL369876A1 (en) | 2005-05-02 |
| CA2469216C (en) | 2010-09-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20201218 |