CN101858762A - Tube wall reflection type ultrasonic flow sensor - Google Patents
Tube wall reflection type ultrasonic flow sensor Download PDFInfo
- Publication number
- CN101858762A CN101858762A CN 201010176262 CN201010176262A CN101858762A CN 101858762 A CN101858762 A CN 101858762A CN 201010176262 CN201010176262 CN 201010176262 CN 201010176262 A CN201010176262 A CN 201010176262A CN 101858762 A CN101858762 A CN 101858762A
- Authority
- CN
- China
- Prior art keywords
- tube wall
- flow sensor
- ultrasonic flow
- interface
- reflection type
- 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
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The invention relates to a flow sensor, in particular to a tube wall reflection ultrasonic flow sensor applied to heat meters and water meters. The tube wall reflection type ultrasonic flow sensor comprises a tube wall, and two ultrasonic transducers are arranged on the same horizontal line in the tube wall from left to right. The tube wall reflection type ultrasonic flow sensor is characterized in that a technological processing hole is arranged between the two ultrasonic transducers on the tube wall, and the tube wall opposite to the technological processing hole is a planar wall with an upper interface and a lower interface which are both horizontal. The invention increases the amplitudes of receiving signals, is beneficial to improving the precision and the stability of flow detection, and reduces the performance requirement of an auxiliary technique even without using the auxiliary technique, thereby lowering the integral complexity of the ultrasonic flow sensor and the cost of the water meters and the heat meters.
Description
(1) technical field
The present invention relates to a kind of flow sensor, particularly a kind of tube wall reflection type ultrasonic flow sensor that is applied to calorimeter, water meter.
(2) background technology
Existing ultrasonic flow sensor generally adopts sheet metal or sensor tube wall as the acoustic reflection device, just considers from surface structure, supporting construction, syndeton aspect for the acoustic reflection Design of device.Because the interface size between fluid and the acoustics reflector arrangement is not the wavelength that is far smaller than in the acoustic reflection device, but with the same order of magnitude of wavelength even less than wavelength, actual reflecting effect has very big difference with the reflecting effect of analyzing by unlimited interface (total reflection), so acoustic reflection device without particular design, reflection efficiency is lower, cause the echo amplitude little, in order to improve flow measurement precision and repeatability, must take some ancillary techniques at aspects such as transducer, radiating circuit, receiving circuits, increase the complicacy and the whole cost of signal Processing.
The set-up mode of existing acoustic reflection device mainly contains two kinds:
One, the acoustic reflection device is to be fixed on sheet metal in the fluid passage of ultrasonic flow sensor by some syndeton, be full of fluid all around, ultrasound wave incident on reflecting surface, realize the sound travel turnover of twice angle, the not special design of acoustic reflection device thickness, two reflection waves that form below thereon may take place to disappear the mutually interference of effect causes that to accept the transducer signal amplitude little.
Two, the acoustic reflection device is that the member that plane or installation have planar structure is processed in the zone of intersecting with sound travel on the ultrasonic flow sensor tube wall, may the fluid passage be square also, a plane that makes vias inner walls is as reflection unit, and the tube wall outside does not have special design and is circular arc; Because reflecting surface is less, incident wave is failed total reflection, and the ultrasound wave that transmission arrives the surface of emission of arc reflects on interface, because incident wave is a plane wave, reflecting surface is the column cambered surface, and the reflection wave major part can't arrive accepts transducer, causes signal amplitude little.
(3) summary of the invention
The present invention provides a kind of reception amplitude height, the simple tube wall reflection type ultrasonic flow sensor of signal Processing in order to remedy the deficiencies in the prior art.
The present invention is achieved through the following technical solutions:
A kind of tube wall reflection type ultrasonic flow sensor, the tube wall that comprises sensor, be arranged on about two ultrasonic transducers on the interior same horizontal line of tube wall, its special character is: be provided with the processes hole in the middle of two ultrasonic transducers on the described tube wall, the tube wall relative with the processes hole site is the planar wall that last interface and following interface all are levels.
The present invention makes full use of the ultrasonic energy that is transmitted to tube wall, make its signal amplitude produce maximum humidification to receiving transducer, to member as the acoustic reflection apparatus, be designed to the plane except promptly going up interface with the fluid surface of contact, promptly descend interface to be designed to the plane parallel the opposite side interface of member with inwall, its wall thickness satisfies certain condition, make through following interface and reflect back into reflection wave in the fluid with direct identical by the reflection wave phase place in the last interface reflected back fluid, strengthen the received signal amplitude by hyperacoustic superposition, both avoided down that interface is parallel with last interface has wasted the ultrasonic energy that transmission enters acoustic reflection apparatus member, the ultrasonic energy of avoiding transmission to enter acoustic reflection apparatus member again forms reflection wave to the reflection wave interference of the last interface effect that disappears mutually.
More excellent scheme of the present invention is:
The wall thickness of described reflecting wall satisfies * λ/16 of (8n+3) * λ/16≤d/cos α≤(8n+5), and wherein, d is a wall thickness, and α is the ultrasound wave incident angle, and λ is the compressional wave wavelength of ultrasound wave in the tube wall medium, and n is a natural number (0,1,2 ...).
The phase differential of interface reflection wave and wavelength X, incident angle α, wall thickness d are relevant up and down, satisfy the λ of relational expression d/cos α=(2n+1)/4, and the n value is a natural number (0,1,2 ...) time phase place identical, receive the amplitude maximum.Any one differs the preferred value that interface is listed apart from d and following formula about in the of two in λ/16 scopes, and the effect of tangible enhancing received signal amplitude is also arranged.
The hole wall in described processes hole is provided with screw thread, is convenient to treat seal with screw after the ultrasonic flow sensor machine-shaping.
The described interface of going up is circular flat with following interface, and the axis of interface is same straight line up and down.
The present invention has increased the received signal amplitude, helps improving the precision and the stability of flow detection, reduces the performance requirement of ancillary technique and does not even use ancillary technique, thereby lower the overall complexity and the cost of ultrasonic flow sensor.
(4) description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the reflective condition of ultrasound wave of the present invention at reflecting wall;
Fig. 3 is an A-A face diagrammatic cross-section shown in Figure 1.
Among the figure, interface on 1,2 processes holes, 3 ultrasonic transducers, 4 tube walls, 5 fluid passages, 6 times interfaces.
(5) embodiment
Embodiment 1:
As shown in drawings, fluid passage 5 is cylindrical on the whole, tube wall 4 outer walls are the face of cylinder on the whole, cross two circular transducer mounting platforms of 5 axis, fluid passage in export processing axis, the top of ultrasonic flow sensor, and the axis of two transducer mounting platforms intersects at tube wall 4 inwalls.Be that the axle center processes processes hole 2 along angular bisector above ultrasonic flow sensor, hole wall has screw thread, treats can use the screw sealing after the ultrasonic flow sensor machine-shaping.
With the angular bisector of two transducer mounting platform axis normal as two reflectings surface of acoustic reflection device, cross the focus processing of two transducer mounting platform axis and go up interface 1, last interface is a circular flat, can process acquisition by 2 pairs of tube wall 4 inwalls in processes hole.Interface 6 is parallel with last interface 1 under tube wall 4 outer walls processing, and following interface is a circular flat, and the axis also is the angular bisector of two transducer mounting platform axis, can be by the processing acquisition to tube wall 4 outer walls.Last interface 1 and following interface 6 constitute the acoustic reflection device.
Tube wall 4 materials of this ultrasonic flow sensor are copper, transducer frequency is 1MHz, two transducer mounting platform axis and acoustic reflection device normal angle are 45 °, and last interface 1 and following interface spacing 1.2mm just in time satisfy the particular kind of relationship of technical solution of the present invention.
Use the ultrasonic flow sensor of above-mentioned embodiment, under identical transceiver circuit, same transducer, identical reflecting surface working (finishing) area condition, with respect to original technology, the received signal amplitude has 1.3 volts (peak-to-peak values) to bring up to 2.5 volts (peak-to-peak values), and helps improving the precision and the stability of flow detection.
Embodiment 2:
As embodiment 1, fluid passage 5 can change rectangular structure on the whole, if the tube wall outer wall in sound travel turnover position also processes and the parallel face structure of the tube wall 4 inwall planes of reflection, also be a kind of embodiment of technical solution of the present invention, particularly tube wall 4 thickness of sound travel turnover position satisfy the preferred value relational expression of technical solution of the present invention or the deviation range of the effect of tangible enhancing received signal amplitude are arranged.
Embodiment 3:
As embodiment 1, last interface 1 and following interface 2 can be other flat shapes, also be a kind of embodiment of technical scheme of the present invention, particularly tube wall 4 thickness of sound travel turnover position satisfy its preferred value relational expression or the deviation range of the effect of tangible enhancing received signal amplitude are arranged.
Claims (4)
1. tube wall reflection type ultrasonic flow sensor, the tube wall (4) that comprises sensor, be arranged on about two ultrasonic transducers (3) on the same horizontal line in the tube wall (4), it is characterized in that: be provided with processes hole (2) in the middle of last two ultrasonic transducers of described tube wall (4) (3), the tube wall (4) relative with position, processes hole (2) is that last interface (1) and following interface (6) all are planar walls of level.
2. tube wall reflection type ultrasonic flow sensor according to claim 1, it is characterized in that: the wall thickness of described horizontal wall satisfies * λ/16 of (8n+3) * λ/16≤d/cos α≤(8n+5), wherein, d is a wall thickness, α is the ultrasound wave incident angle, λ is the compressional wave wavelength of ultrasound wave in the tube wall medium, and n is a natural number (0,1,2 ...).
3. tube wall reflection type ultrasonic flow sensor according to claim 1 and 2 is characterized in that: the hole wall in described processes hole (2) is provided with screw thread.
4. tube wall reflection type ultrasonic flow sensor according to claim 1 and 2 is characterized in that: described upward interface (1) and following interface (3) are circular flat, and the axis of interface is same straight line up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010176262 CN101858762B (en) | 2010-05-19 | 2010-05-19 | Tube wall reflection type ultrasonic flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010176262 CN101858762B (en) | 2010-05-19 | 2010-05-19 | Tube wall reflection type ultrasonic flow sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101858762A true CN101858762A (en) | 2010-10-13 |
| CN101858762B CN101858762B (en) | 2013-01-16 |
Family
ID=42944799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010176262 Expired - Fee Related CN101858762B (en) | 2010-05-19 | 2010-05-19 | Tube wall reflection type ultrasonic flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101858762B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288781A (en) * | 2011-06-28 | 2011-12-21 | 北京东方迪码科技有限公司 | Reflective ultrasonic anemoscope and measuring method thereof |
| CN103035070A (en) * | 2012-12-12 | 2013-04-10 | 山东冠翔仪表有限公司 | Small-diameter ultrasonic intelligent water meter |
| CN103170579A (en) * | 2013-04-18 | 2013-06-26 | 李玉忠 | Stainless steel water meter shell and machining method thereof |
| WO2013185406A1 (en) * | 2012-06-13 | 2013-12-19 | 广州柏诚智能科技有限公司 | Ultrasonic flowmeter and ultrasonic flow measuring method |
| CN105716744A (en) * | 2016-01-28 | 2016-06-29 | 苏州瑞尚节能科技有限公司 | Supersonic heat meter and pipeline thereof |
| CN110940385A (en) * | 2018-09-25 | 2020-03-31 | 比尔克特韦尔克有限两合公司 | Fluid measuring device with a fluid housing and method for producing a fluid housing |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0688738A (en) * | 1992-09-08 | 1994-03-29 | Oval Corp | Ultrasonic wave flowmeter |
| CN1172528A (en) * | 1995-01-31 | 1998-02-04 | 丹福斯有限公司 | Ultrasonic folwmeter |
| JPH11237263A (en) * | 1998-02-19 | 1999-08-31 | Kaijo Corp | Ultrasonic flowmeter |
| CN1711461A (en) * | 2002-10-17 | 2005-12-21 | 恩德斯+豪斯流量技术股份有限公司 | Flowmeter |
| JP3821571B2 (en) * | 1998-03-19 | 2006-09-13 | 株式会社オーバル | Ultrasonic flow meter |
| CN1977149A (en) * | 2004-03-12 | 2007-06-06 | 帕纳米特里科斯股份有限公司 | Method and system for calculating the transit time of an ultrasonic pulse |
| CN101243306A (en) * | 2005-08-16 | 2008-08-13 | 罗伯特·博世有限公司 | Ultrasonic measuring unit with integrated humidity analysis |
| CN201672944U (en) * | 2010-05-19 | 2010-12-15 | 邓鲁坚 | Tube-wall reflecting ultrasonic flow sensor |
-
2010
- 2010-05-19 CN CN 201010176262 patent/CN101858762B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0688738A (en) * | 1992-09-08 | 1994-03-29 | Oval Corp | Ultrasonic wave flowmeter |
| CN1172528A (en) * | 1995-01-31 | 1998-02-04 | 丹福斯有限公司 | Ultrasonic folwmeter |
| JPH11237263A (en) * | 1998-02-19 | 1999-08-31 | Kaijo Corp | Ultrasonic flowmeter |
| JP3821571B2 (en) * | 1998-03-19 | 2006-09-13 | 株式会社オーバル | Ultrasonic flow meter |
| CN1711461A (en) * | 2002-10-17 | 2005-12-21 | 恩德斯+豪斯流量技术股份有限公司 | Flowmeter |
| CN1977149A (en) * | 2004-03-12 | 2007-06-06 | 帕纳米特里科斯股份有限公司 | Method and system for calculating the transit time of an ultrasonic pulse |
| CN101243306A (en) * | 2005-08-16 | 2008-08-13 | 罗伯特·博世有限公司 | Ultrasonic measuring unit with integrated humidity analysis |
| CN201672944U (en) * | 2010-05-19 | 2010-12-15 | 邓鲁坚 | Tube-wall reflecting ultrasonic flow sensor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288781A (en) * | 2011-06-28 | 2011-12-21 | 北京东方迪码科技有限公司 | Reflective ultrasonic anemoscope and measuring method thereof |
| WO2013185406A1 (en) * | 2012-06-13 | 2013-12-19 | 广州柏诚智能科技有限公司 | Ultrasonic flowmeter and ultrasonic flow measuring method |
| CN103035070A (en) * | 2012-12-12 | 2013-04-10 | 山东冠翔仪表有限公司 | Small-diameter ultrasonic intelligent water meter |
| CN103170579A (en) * | 2013-04-18 | 2013-06-26 | 李玉忠 | Stainless steel water meter shell and machining method thereof |
| CN105716744A (en) * | 2016-01-28 | 2016-06-29 | 苏州瑞尚节能科技有限公司 | Supersonic heat meter and pipeline thereof |
| CN105716744B (en) * | 2016-01-28 | 2018-07-03 | 苏州瑞尚节能科技有限公司 | A kind of ultrasonic calorimeter pipeline and ultrasonic calorimeter |
| CN110940385A (en) * | 2018-09-25 | 2020-03-31 | 比尔克特韦尔克有限两合公司 | Fluid measuring device with a fluid housing and method for producing a fluid housing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101858762B (en) | 2013-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101858762B (en) | Tube wall reflection type ultrasonic flow sensor | |
| US6330831B1 (en) | Stream-cleaned differential reflection coefficient sensor | |
| CN101625337B (en) | Circumferential wave guide energy converter with adjustable incident angle | |
| KR101878273B1 (en) | Ultrasonic probe | |
| CN202583131U (en) | Sliding angle variable probe special for guided wave detection | |
| WO2009035098A1 (en) | Vibration monitoring device and method | |
| CN103852118A (en) | Flow measuring pipe segment for small-caliber ultrasonic heat meter | |
| CN201672944U (en) | Tube-wall reflecting ultrasonic flow sensor | |
| Kang et al. | Two-dimensional flexural ultrasonic phased array for flow measurement | |
| CN105547991A (en) | Steel pipe inner wall corrosion detecting probe and steel pipe inner wall corrosion detecting method | |
| CN103537423A (en) | Phased-array transduction device and device and method for detecting of petroleum drill collar threads | |
| CN203443933U (en) | Small-size bicrystal curved surface transverse wave ultrasonic probe | |
| GB2540737A (en) | An anemometer | |
| CN201497732U (en) | Ultrasonic guided wave transducer with adjustable incidence angle | |
| CN1831528A (en) | Measuring method for pulse response of ultrasonic transducer based on optoacoustic effect | |
| CN201086059Y (en) | Bidirectional radial type supersonic transducer | |
| CN203758968U (en) | Ultrasonic-detecting special probe for butt-joint ring welding seam of austenite stainless steel tube | |
| CN210665625U (en) | Double-crystal composite ultrasonic probe with high sensitivity | |
| CN202853669U (en) | Ultrasonic heat meter flowmeter | |
| CN203443931U (en) | Small-size bicrystal curved surface longitudinal wave ultrasonic probe | |
| CN202141699U (en) | Directional ultrasonic probe | |
| CN201974254U (en) | Reflecting device and ultrasonic calorimeter equipped with reflecting device | |
| CN205691549U (en) | A kind of ultrasonic transducer detecting steel pipe non-layered defect | |
| CN104990987A (en) | Triangular ultrasonic probe | |
| CN104990988A (en) | Anti-interference ultrasonic probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150519 |
|
| EXPY | Termination of patent right or utility model |