WO1997021985A1 - Ultrasonic flowmeter and ultrasonic generator/detector - Google Patents
Ultrasonic flowmeter and ultrasonic generator/detector Download PDFInfo
- Publication number
- WO1997021985A1 WO1997021985A1 PCT/JP1996/003629 JP9603629W WO9721985A1 WO 1997021985 A1 WO1997021985 A1 WO 1997021985A1 JP 9603629 W JP9603629 W JP 9603629W WO 9721985 A1 WO9721985 A1 WO 9721985A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ultrasonic
- receiving surface
- ultrasonic transducer
- thickness
- transmitting
- Prior art date
Links
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
- G01F1/66—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
-
- 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
Definitions
- all the lengths in the vertical and horizontal directions of each surface of each piezoelectric body are set so that the vibration in the electrode direction becomes the main mode.
- the ratio of the vertical and horizontal lengths of the transmitting and receiving surfaces to the thickness is 0.8 or less, high sensitivity and high-speed response can be achieved because the thickness longitudinal vibration can be used as the main mode.
- a wide and small ultrasonic transducer can be obtained, and a highly accurate and compact ultrasonic flowmeter can be obtained.
- An ultrasonic transducer is the ultrasonic transducer according to the first to third aspects, wherein a plurality of piezoelectric bodies polarized in a direction perpendicular to the electrodes are opposed to each other in polarization direction.
- the main mode is the vibration of the laminated piezoelectric body in the electrode direction, and the acoustic impedance of the ultrasonic transducer can be reduced to reduce noise.
- an ultrasonic transducer can be obtained.
- Air 1 which is the fluid to be measured, flows into the channel 2 from the inlet side 9 and flows out from the outlet side 10.
- the flow velocity distribution of the air 1 flowing through the flow passage 2 having a rectangular cross section is simpler than that of a circular cross section, and the distribution in the height direction is small and the distribution is in the short axis direction.
- the ultrasonic wave transmitted from ultrasonic transducer A 7 is air
- the time t 1 that propagates through 1 and is received by the ultrasonic transducer B 8 is expressed by Equation 1.
- the fluid to be measured is air in the first embodiment, the fluid to be measured may be a gas or liquid other than air.
- the cross-sectional shape of the flow path 2 is rectangular, it may be circular, or it is not necessary that the top plate 3 and the bottom plate 4 are parallel and the side plates A 5 and B 6 are parallel.
- the height of the flow path 2 and the short side of the wave transmitting / receiving surface are assumed to be equal, but they need not necessarily be equal.
- the ultrasonic transducer may be used as an air transducer or an underwater ultrasonic transducer used in the open air space used for the flow rate detection unit of the ultrasonic flow meter.
- FIG. 6 is a schematic configuration diagram of an ultrasonic transducer used in an ultrasonic flowmeter according to a fourth embodiment of the present invention.
- reference numeral 33 denotes a matching layer
- reference numeral 34 denotes a back load material
- reference numeral 35 denotes a lead wire
- the two piezoelectric plates A 28 and B 29 have the same thickness with the ratio of the length to the thickness of 0.6 or less and the ratio of the width to the thickness of 0.6 or less.
- the resonance frequency and anti-resonance frequency of other vibration modes are seen between the resonance frequency of the thickness longitudinal vibration (around 180 kHz) and the anti-resonance frequency (around 260 kHz). And other vibration modes are mixed. From this analysis result, when all the ratios of the length 62 and width 63 of the transmitting and receiving surface 61 of the piezoelectric plate 60 to the thickness 64 of the piezoelectric plate 60 are 0.6 or less, the thickness longitudinal vibration is the main mode and the efficiency is the highest. It turned out that it could be used.
- a fifth ultrasonic flowmeter is the ultrasonic flowmeter according to the first to fourth inventions, wherein the flow path has a gap of a predetermined width at a predetermined position, and is arranged at a predetermined distance.
- the structure is sandwiched between two parallel flat plates, and by making the cross section of the flow path rectangular, the flow velocity distribution in the flow path cross section can be simplified, and the flow rate can be derived with high accuracy from the obtained flow velocity. It is possible to obtain a more accurate ultrasonic flowmeter.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
- Transducers For Ultrasonic Waves (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/077,798 US6508133B1 (en) | 1995-12-13 | 1996-12-12 | Ultrasonic flowmeter and ultrasonic generator/detector |
JP52192997A JP3554336B2 (ja) | 1995-12-13 | 1996-12-12 | 超音波流量計及び超音波送受波器 |
EP96941847.4A EP0869337B1 (en) | 1995-12-13 | 1996-12-12 | Ultrasonic flowmeter and ultrasonic generator/detector |
HK99102266A HK1017067A1 (en) | 1995-12-13 | 1999-05-24 | Ultrasonic flowmeter and ultrasonic generator/detector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32422395 | 1995-12-13 | ||
JP7/324223 | 1995-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997021985A1 true WO1997021985A1 (en) | 1997-06-19 |
Family
ID=18163422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1996/003629 WO1997021985A1 (en) | 1995-12-13 | 1996-12-12 | Ultrasonic flowmeter and ultrasonic generator/detector |
Country Status (7)
Country | Link |
---|---|
US (1) | US6508133B1 (ja) |
EP (2) | EP0869337B1 (ja) |
JP (1) | JP3554336B2 (ja) |
KR (1) | KR100852555B1 (ja) |
CN (1) | CN1104629C (ja) |
HK (1) | HK1017067A1 (ja) |
WO (1) | WO1997021985A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001304929A (ja) * | 2000-04-21 | 2001-10-31 | Koji Toda | 超音波液体流速センサ |
WO2012164890A1 (ja) * | 2011-05-27 | 2012-12-06 | パナソニック株式会社 | 超音波送受波器およびその製造方法、ならびに超音波流量計 |
CN105547385A (zh) * | 2015-12-18 | 2016-05-04 | 合肥市恒昌自动化控制有限责任公司 | 一种基于超声波原理的渠道断面流量测量方法 |
JPWO2021176726A1 (ja) * | 2020-03-06 | 2021-09-10 |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1182431A4 (en) * | 1999-03-17 | 2006-06-14 | Matsushita Electric Ind Co Ltd | ULTRASOUND FLOWMETER |
TW553780B (en) * | 1999-12-17 | 2003-09-21 | Sharp Kk | Ultrasonic processing device and electronic parts fabrication method using the same |
JP3611796B2 (ja) * | 2001-02-28 | 2005-01-19 | 松下電器産業株式会社 | 超音波送受波器、超音波送受波器の製造方法及び超音波流量計 |
US7377169B2 (en) * | 2004-04-09 | 2008-05-27 | Shell Oil Company | Apparatus and methods for acoustically determining fluid properties while sampling |
US7397168B2 (en) * | 2005-08-12 | 2008-07-08 | Daniel Measurement And Control, Inc. | Transducer housing for an ultrasonic fluid meter |
CN100587988C (zh) * | 2005-08-12 | 2010-02-03 | 丹尼尔度量和控制公司 | 用于超声流量计的换能器组件 |
US7307373B2 (en) * | 2005-08-12 | 2007-12-11 | Daniel Measurement And Control, Inc. | Transducer assembly for an ultrasonic fluid meter |
US9360309B2 (en) * | 2008-03-14 | 2016-06-07 | Cidra Corporate Services Inc. | Method and apparatus for monitoring of component housing wall thickness and wear monitoring |
EP2277015B1 (en) * | 2008-04-11 | 2019-08-14 | Expro Meters, Inc. | Clamp-on apparatus for measuring a fluid flow that includes a protective sensor housing |
DE102008002166A1 (de) * | 2008-06-03 | 2009-12-10 | Endress + Hauser Flowtec Ag | Messsystem zur Bestimmung und/oder Überwachung des Durchflusses eines Messmediums durch ein Messrohr |
RU2496183C2 (ru) * | 2009-04-13 | 2013-10-20 | Дэниэл Межермент Энд Контрол, Инк. | Преобразователь, имеющий надежное электрическое соединение с пьезоэлектрическим кристаллом |
JP2011242386A (ja) * | 2010-04-23 | 2011-12-01 | Immersion Corp | 接触センサと触覚アクチュエータとの透明複合圧電材結合体 |
DE102012201715A1 (de) * | 2011-03-03 | 2012-09-06 | Intelligendt Systems & Services Gmbh | Prüfkopf zum Prüfen eines Werkstückes mit einer eine Mehrzahl von Wandlerelementen enthaltenden Ultraschallwandleranordnung und Verfahren zum Herstellen eines solchen Prüfkopfes |
US9239386B2 (en) | 2011-10-05 | 2016-01-19 | Infineon Technologies Ag | Sonic sensors and packages |
DE102011090079A1 (de) | 2011-12-29 | 2013-07-04 | Endress + Hauser Flowtec Ag | Ultraschallwandler für ein Ultraschall-Durchflussmessgerät |
US9726532B2 (en) * | 2012-06-29 | 2017-08-08 | Panasonic Intellectual Property Management Co., Ltd. | Flow meter device |
DE102013104544B4 (de) | 2013-05-03 | 2015-03-12 | Endress + Hauser Flowtec Ag | Ultraschallwandler und Ultraschall-Durchflussmessgerät |
JP6543109B2 (ja) * | 2015-06-30 | 2019-07-10 | 株式会社日立パワーソリューションズ | 超音波探触子および超音波検査装置 |
JP6941763B2 (ja) | 2017-04-18 | 2021-09-29 | パナソニックIpマネジメント株式会社 | 超音波送受信器 |
US11473949B2 (en) * | 2017-12-03 | 2022-10-18 | Eugene Fourie | Flowmeter |
JP7484534B2 (ja) * | 2020-07-30 | 2024-05-16 | セイコーエプソン株式会社 | 流体デバイス |
DE102021118821A1 (de) * | 2021-07-21 | 2023-01-26 | Krohne Messtechnik Gmbh | Ultraschalldurchflussmessgerät und Verfahren zum Betreiben eines Ultraschalldurchflussmessgeräts |
CN114933343A (zh) * | 2022-05-31 | 2022-08-23 | 常州酷特仪器仪表有限公司 | 一种低能耗明渠污水流量测定及处理*** |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS60169716A (ja) * | 1984-02-15 | 1985-09-03 | Toshiba Corp | 流速測定トランスデユ−サ |
JPH03112300A (ja) * | 1989-09-26 | 1991-05-13 | Furuno Electric Co Ltd | 振動子ユニット |
JPH05223608A (ja) * | 1992-02-18 | 1993-08-31 | Tokimec Inc | 超音波流量計 |
JPH07264697A (ja) * | 1994-03-18 | 1995-10-13 | Hitachi Ltd | 超音波送受波器 |
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US3964308A (en) * | 1973-09-04 | 1976-06-22 | Scarpa Laboratories, Inc. | Ultrasonic flowmeter |
US4156158A (en) * | 1977-08-17 | 1979-05-22 | Westinghouse Electric Corp. | Double serrated piezoelectric transducer |
JPS60192500A (ja) | 1984-03-14 | 1985-09-30 | Nippon Dempa Kogyo Co Ltd | マトリツクス・アレ−型超音波探触子及びその製造方法 |
JP2633549B2 (ja) | 1987-02-26 | 1997-07-23 | 株式会社東芝 | 超音波探触子 |
JPH0778438B2 (ja) * | 1988-07-08 | 1995-08-23 | エンドレス ウント ハウザー フローテック アクチエンゲゼルシヤフト | 超音波流量測定方法及び装置 |
DE3941544A1 (de) * | 1989-12-15 | 1991-06-20 | Siemens Ag | Ultraschall-durchflussmesser |
JP2794909B2 (ja) | 1990-07-02 | 1998-09-10 | 東ソー株式会社 | パネル用バックライト |
EP0462311B1 (de) * | 1990-06-21 | 1995-04-05 | Siemens Aktiengesellschaft | Verbund-Ultraschallwandler und Verfahren zur Herstellung eines strukturierten Bauelementes aus piezoelektrischer Keramik |
JP3112300B2 (ja) | 1991-03-29 | 2000-11-27 | 株式会社アマダ | 板材加工機 |
US5295487A (en) * | 1992-02-12 | 1994-03-22 | Kabushiki Kaisha Toshiba | Ultrasonic probe |
US5311095A (en) * | 1992-05-14 | 1994-05-10 | Duke University | Ultrasonic transducer array |
US5460047A (en) * | 1992-11-13 | 1995-10-24 | Panametrics, Inc. | Flow measurement system including ultrasonic transducers |
US5381385A (en) * | 1993-08-04 | 1995-01-10 | Hewlett-Packard Company | Electrical interconnect for multilayer transducer elements of a two-dimensional transducer array |
US5743855A (en) * | 1995-03-03 | 1998-04-28 | Acuson Corporation | Broadband phased array transducer design with frequency controlled two dimension capability and methods for manufacture thereof |
US5617865A (en) * | 1995-03-31 | 1997-04-08 | Siemens Medical Systems, Inc. | Multi-dimensional ultrasonic array interconnect |
US6026693A (en) * | 1997-06-04 | 2000-02-22 | Baumoel; Douglas S. | Pipe spool section having square or rectangular cross-section for clamp on transducer and method for flow measurement |
US6036647A (en) * | 1998-07-31 | 2000-03-14 | Scimed Life Systems, Inc. | PZT off-aperture bonding technique |
-
1996
- 1996-12-12 EP EP96941847.4A patent/EP0869337B1/en not_active Expired - Lifetime
- 1996-12-12 EP EP06021176A patent/EP1754958A1/en not_active Withdrawn
- 1996-12-12 KR KR1019980704475A patent/KR100852555B1/ko not_active IP Right Cessation
- 1996-12-12 JP JP52192997A patent/JP3554336B2/ja not_active Expired - Lifetime
- 1996-12-12 CN CN96199023A patent/CN1104629C/zh not_active Expired - Lifetime
- 1996-12-12 WO PCT/JP1996/003629 patent/WO1997021985A1/ja active Application Filing
- 1996-12-12 US US09/077,798 patent/US6508133B1/en not_active Expired - Lifetime
-
1999
- 1999-05-24 HK HK99102266A patent/HK1017067A1/xx not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS60169716A (ja) * | 1984-02-15 | 1985-09-03 | Toshiba Corp | 流速測定トランスデユ−サ |
JPH03112300A (ja) * | 1989-09-26 | 1991-05-13 | Furuno Electric Co Ltd | 振動子ユニット |
JPH05223608A (ja) * | 1992-02-18 | 1993-08-31 | Tokimec Inc | 超音波流量計 |
JPH07264697A (ja) * | 1994-03-18 | 1995-10-13 | Hitachi Ltd | 超音波送受波器 |
Non-Patent Citations (1)
Title |
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See also references of EP0869337A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001304929A (ja) * | 2000-04-21 | 2001-10-31 | Koji Toda | 超音波液体流速センサ |
JP4591858B2 (ja) * | 2000-04-21 | 2010-12-01 | 耕司 戸田 | 超音波液体流速センサ |
WO2012164890A1 (ja) * | 2011-05-27 | 2012-12-06 | パナソニック株式会社 | 超音波送受波器およびその製造方法、ならびに超音波流量計 |
US10115385B2 (en) | 2011-05-27 | 2018-10-30 | Panasonic Intellectual Property Management Co., Ltd. | Ultrasonic transmission/reception unit, manufacturing method of ultrasonic transmission/reception unit, and ultrasonic flow meter device |
CN105547385A (zh) * | 2015-12-18 | 2016-05-04 | 合肥市恒昌自动化控制有限责任公司 | 一种基于超声波原理的渠道断面流量测量方法 |
JPWO2021176726A1 (ja) * | 2020-03-06 | 2021-09-10 | ||
WO2021176726A1 (ja) * | 2020-03-06 | 2021-09-10 | 本多電子株式会社 | ソナー |
Also Published As
Publication number | Publication date |
---|---|
JP3554336B2 (ja) | 2004-08-18 |
HK1017067A1 (en) | 1999-11-12 |
KR19990072143A (ko) | 1999-09-27 |
EP0869337B1 (en) | 2015-03-04 |
EP0869337A4 (en) | 1999-06-09 |
CN1104629C (zh) | 2003-04-02 |
EP1754958A1 (en) | 2007-02-21 |
EP0869337A1 (en) | 1998-10-07 |
CN1204398A (zh) | 1999-01-06 |
KR100852555B1 (ko) | 2009-02-06 |
US6508133B1 (en) | 2003-01-21 |
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