CN104515626A - Phased array transducer for ultrasonic heat meter and detection method for phased array transducer - Google Patents
Phased array transducer for ultrasonic heat meter and detection method for phased array transducer Download PDFInfo
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- CN104515626A CN104515626A CN201410836610.5A CN201410836610A CN104515626A CN 104515626 A CN104515626 A CN 104515626A CN 201410836610 A CN201410836610 A CN 201410836610A CN 104515626 A CN104515626 A CN 104515626A
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Abstract
The invention discloses a phased array transducer for an ultrasonic heat meter and a detection method for the phased array transducer. At least two transducers are arranged on a pipe wall and are provided with a plurality of piezoelectric elements. Different piezoelectric elements of the transducers are excited by adopting different phase differences or delay time differences; acoustic beam deflection is realized according to an ultrasonic stacking theory. An acoustic beam deflection angle and an ultrasonic focusing depth are controlled by controlling the phase differences or the delay time differences of the multiple piezoelectric elements, so that different detection methods are implemented; the adjustment of the acoustic beam deflection angle and the focusing depth is carried out according to a requirement on the detection of the ultrasonic heat meter.
Description
Technical field
The present invention relates to a kind of ultrasound wave hotlist transducer, particularly relate to a kind of ultrasound wave hotlist phase array transducer and detection method thereof.
Background technology
Prior art one, as shown in Figure 1, in the design of ultrasound wave hotlist, ultrasound wave is extensively designed to direct-injection type, namely launches acoustic beam perpendicular to the transducer surface of emission.Therefore in U-shaped scan mode, need to realize sound wave by catoptron and propagate in the duct to realize metering.Result in acoustic signal to weaken, test shaft design complexity, to problems such as catoptron setting angle requirement height.
Prior art two, as shown in Figure 2, in the ultrasound examinations such as V-type and W type, ultrasonic transducer needs oblique cutting to enter pipeline.This designing requirement transducer technique for fixing on pipeline is complicated, and produces the problems such as bubble accumulation, crushing increasing.
Summary of the invention
The object of this invention is to provide a kind of ultrasound wave hotlist phase array transducer and the detection method thereof that can carry out acoustic beam deflection angle and depth of focus adjustment with ultrasound wave hotlist detection demand.
The object of the invention is to be achieved through the following technical solutions:
Ultrasound wave hotlist phase array transducer of the present invention, tube wall is provided with at least two transducers, and described transducer is provided with multiple piezoelectricity primitive.
The detection method of above-mentioned ultrasound wave hotlist phase array transducer of the present invention, adopts different phase differential or delay-time difference to encourage the different piezoelectric unit of described transducer, realizes acoustic beam deflection according to sound wave superposition principle.
As seen from the above technical solution provided by the invention, the ultrasound wave hotlist phase array transducer that the embodiment of the present invention provides and detection method thereof, because transducer is provided with multiple piezoelectricity primitive, different phase differential or delay-time difference is adopted to encourage the different piezoelectric unit of described transducer, realize acoustic beam deflection according to sound wave superposition principle, demand can be detected with ultrasound wave hotlist and carry out acoustic beam deflection angle and depth of focus adjustment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ultrasound wave hotlist transducer of prior art one.
Fig. 2 is the structural representation of the ultrasound wave hotlist transducer of prior art two.
The structural representation of the ultrasound wave hotlist phase array transducer that Fig. 3 provides for the embodiment of the present invention and detection method thereof.
Embodiment
To be described in further detail the embodiment of the present invention below.
Ultrasound wave hotlist phase array transducer of the present invention, its preferably embodiment be:
Tube wall is provided with at least two transducers, and described transducer is provided with multiple piezoelectricity primitive.
Described transducer is installed perpendicular to described tube wall.
Two transducers are installed on the same side or the opposite side of described tube wall.
The detection method of above-mentioned ultrasound wave hotlist phase array transducer of the present invention, its preferably embodiment be:
Adopt different phase differential or delay-time difference to encourage the different piezoelectric unit of described transducer, realize acoustic beam deflection according to sound wave superposition principle.
By controlling multiple piezoelectric unit phase differential or delay-time difference control acoustic beam deflection angle, realize different detection methods.
The sound wave depth of focus is regulated by selecting the energisation mode of different piezoelectric based unit combinations and piezoelectricity primitive.
Different piezoelectric based unit combinations and the energisation mode of piezoelectricity primitive is selected according to the requirement of uninterrupted, environment for use, probe temperature, detection mode or accuracy of detection.
Different according to serviceability temperature, by the precision regulating acoustic beam angle of inclination and the depth of focus to regulate detection.
Ultrasound wave hotlist phase array transducer of the present invention and detection method thereof, can detect demand with ultrasound wave hotlist and carry out acoustic beam deflection angle and depth of focus adjustment.
Specific embodiment:
As shown in Figure 3, be made up of some sub-transducer vibrations sources and primitive.Ultrasonic wave acoustic beam deflection angle is realized to the pumping signal time delay of each primitive or phase place difference adjustable, select different primitive and the combination of different energisation mode, realize focusing ultrasonic wave depth adjustable.
In ultrasonic transducer, be divided into a lot of little transducer according to testing conditions, each little transducer is called primitive, and whole transducer becomes array to distribute;
A pair transducer is arranged on pipeline, is respectively used to transmit and receive ultrasound wave; Can also can install by heteropleural by homonymy;
To different primitive excitation out of phase or the electric signal of different time delay of transmitting transducer;
According to sound wave superposition principle, ultrasonic wave acoustic beam deflects, and now ultrasonic wave acoustic beam and water (flow) direction form an angle;
Select different primitive combinations and pumping signal array mode to adjust the ultrasonic sound field depth of focus;
Receiving transducer receives acoustic signals to realize flow metering;
When serviceability temperature changes, the velocity of sound changes thereupon, and adjustment acoustic beam deflection angle and the depth of focus are to ensure signal accuracy in real time, thus ensures measuring accuracy;
When the environment such as applying working condition, water quality changes, adjustment acoustic beam deflection angle and the depth of focus are to ensure measuring accuracy;
For improving measuring accuracy, can change detecte method, such as U-shaped detection method, V-type detection method and W type detection method etc. flexibly.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (8)
1. a ultrasound wave hotlist phase array transducer, is characterized in that, tube wall is provided with at least two transducers, and described transducer is provided with multiple piezoelectricity primitive.
2. ultrasound wave hotlist phase array transducer according to claim 1, it is characterized in that, described transducer is installed perpendicular to described tube wall.
3. ultrasound wave hotlist phase array transducer according to claim 2, is characterized in that, two transducers are installed on the same side or the opposite side of described tube wall.
4. the detection method of the ultrasound wave hotlist phase array transducer described in a claim 1,2 or 3, it is characterized in that, adopt different phase differential or delay-time difference to encourage the different piezoelectric unit of described transducer, realize acoustic beam deflection according to sound wave superposition principle.
5. according to the detection method of claim 4 ultrasound wave hotlist phase array transducer, it is characterized in that, it is characterized in that, by controlling multiple piezoelectric unit phase differential or delay-time difference control acoustic beam deflection angle, realizing different detection methods.
6. according to the detection method of claim 5 ultrasound wave hotlist phase array transducer, it is characterized in that, it is characterized in that, regulating the sound wave depth of focus by selecting the energisation mode of different piezoelectric based unit combinations and piezoelectricity primitive.
7. according to the detection method of claim 6 ultrasound wave hotlist phase array transducer, it is characterized in that, it is characterized in that, select different piezoelectric based unit combinations and the energisation mode of piezoelectricity primitive according to the requirement of uninterrupted, environment for use, probe temperature, detection mode or accuracy of detection.
8., according to the detection method of claim 7 ultrasound wave hotlist phase array transducer, it is characterized in that, it is characterized in that, different according to serviceability temperature, by the precision regulating acoustic beam angle of inclination and the depth of focus to regulate detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836610.5A CN104515626A (en) | 2014-12-29 | 2014-12-29 | Phased array transducer for ultrasonic heat meter and detection method for phased array transducer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410836610.5A CN104515626A (en) | 2014-12-29 | 2014-12-29 | Phased array transducer for ultrasonic heat meter and detection method for phased array transducer |
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| CN104515626A true CN104515626A (en) | 2015-04-15 |
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| CN201410836610.5A Pending CN104515626A (en) | 2014-12-29 | 2014-12-29 | Phased array transducer for ultrasonic heat meter and detection method for phased array transducer |
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Citations (7)
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| PL199849B1 (en) * | 2001-04-09 | 2008-11-28 | M & Fc Holding Llc | Calorimeter |
| CN101936756A (en) * | 2010-08-31 | 2011-01-05 | 华南理工大学 | Multifrequency phased array ultrasonic Doppler flow detection system and method |
| WO2011078691A2 (en) * | 2009-12-22 | 2011-06-30 | Tecom As C/O Christian Michelsen Research As | Measuring apparatus |
| CN202092690U (en) * | 2008-06-25 | 2011-12-28 | 恩德斯+豪斯流量技术股份有限公司 | Measurement system for determining and/or monitoring flow of measurement medium passing through measurement tube |
| CN203929145U (en) * | 2014-06-13 | 2014-11-05 | 王忠杰 | A kind of multichannel ultrasonic flow rate measurement mechanism flow sensor |
| CN104236648A (en) * | 2013-06-18 | 2014-12-24 | 横河电机株式会社 | ultrasonic flowmeter |
| CN204346616U (en) * | 2014-12-29 | 2015-05-20 | 合肥瑞纳表计有限公司 | Ultrasound wave hotlist phase array transducer |
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2014
- 2014-12-29 CN CN201410836610.5A patent/CN104515626A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL199849B1 (en) * | 2001-04-09 | 2008-11-28 | M & Fc Holding Llc | Calorimeter |
| CN202092690U (en) * | 2008-06-25 | 2011-12-28 | 恩德斯+豪斯流量技术股份有限公司 | Measurement system for determining and/or monitoring flow of measurement medium passing through measurement tube |
| WO2011078691A2 (en) * | 2009-12-22 | 2011-06-30 | Tecom As C/O Christian Michelsen Research As | Measuring apparatus |
| CN101936756A (en) * | 2010-08-31 | 2011-01-05 | 华南理工大学 | Multifrequency phased array ultrasonic Doppler flow detection system and method |
| CN104236648A (en) * | 2013-06-18 | 2014-12-24 | 横河电机株式会社 | ultrasonic flowmeter |
| CN203929145U (en) * | 2014-06-13 | 2014-11-05 | 王忠杰 | A kind of multichannel ultrasonic flow rate measurement mechanism flow sensor |
| CN204346616U (en) * | 2014-12-29 | 2015-05-20 | 合肥瑞纳表计有限公司 | Ultrasound wave hotlist phase array transducer |
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Application publication date: 20150415 |
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