CN107436166A - A kind of ultrasonic flowmeter transducer - Google Patents
A kind of ultrasonic flowmeter transducer Download PDFInfo
- Publication number
- CN107436166A CN107436166A CN201710800366.0A CN201710800366A CN107436166A CN 107436166 A CN107436166 A CN 107436166A CN 201710800366 A CN201710800366 A CN 201710800366A CN 107436166 A CN107436166 A CN 107436166A
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- China
- Prior art keywords
- ultrasonic flowmeter
- housing
- base
- piezoelectric element
- hole
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims description 17
- 239000000565 sealant Substances 0.000 claims description 14
- 239000011521 glass Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 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
- G01F1/66—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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of ultrasonic flowmeter transducer, including the housing provided with mounting hole, the acoustic matching layer and piezoelectric element being installed on successively in the mounting hole, and be hermetically connected with the shell and one end presses on the base of piezoelectric element, piezoelectric element and the acoustic matching layer sealing is located between housing and base；The base includes cylinder and is fixed on ultrasonic flowmeter by screw with the integrally formed square installing plate of the cylinder, the installing plate.Base of the present invention include cylinder and with the integrally formed square installing plate of the cylinder, pass through above-mentioned understructure, installing plate is fixed on ultrasonic flowmeter by screw, it is threadedly coupled compared to existing directly use base with ultrasonic flowmeter, reduce the length of base, and then the space-consuming of transducer is reduced, it is easily installed.Double matching Rotating fields that acoustic matching layer and housing are formed improve the conversion efficiency of piezoelectricity original paper, ensure that preferable acoustic wave transmission coefficient.
Description
Technical field
The present invention relates to transducer correlative technology field, more particularly to a kind of ultrasonic flowmeter transducer.
Background technology
Ultrasonic flowmeter is by detecting flow of fluid to the effect of supersonic beam or ultrasonic pulse with the instrument of measurement stream amount.
Ultrasonic flowmeter is mainly by ultrasonic transducer (or the ultrasonic flow rate being made up of transducer and measurement pipe on measurement pipeline
Sensor) and converter composition.
Wherein transducer be realize electric energy, mechanical energy or acoustic energy from a form of energy conversion be another form of energy
The device of amount.Transducer is one of important composition of ultrasonic flowmeter, and existing transducer volume is big, thus is accounted for using when installing
The transducer that is larger, and occupying little space with space, its measurement accuracy is low, and conversion efficiency is low, it is impossible to meets actual use demand.
Therefore, it is badly in need of a kind of occupy little space and the ultrasonic transducer of high conversion efficiency.
The content of the invention
It is empty to solve to take existing for existing transducer it is an object of the invention to provide a kind of ultrasonic flow rate transducer
Between the big and low above mentioned problem of conversion efficiency.
To use following technical scheme up to this purpose, the present invention：
A kind of ultrasonic flowmeter transducer, including the housing provided with mounting hole, are installed in the mounting hole successively
Acoustic matching layer and piezoelectric element, and be hermetically connected with the shell and one end presses on the base of piezoelectric element, the piezoelectricity member
Part and acoustic matching layer sealing are located between housing and base；The base include cylinder and with the integrally formed side of the cylinder
The installing plate of shape, the installing plate are fixed on ultrasonic flowmeter by screw.
Further, connecting hole is arranged with the installing plate, the installing plate is fixed by screw through connecting hole
In ultrasonic flowmeter.
Further, through sealing hole is provided with the base, the sealing hole is provided with close close to one end of piezoelectric element
Sealing.
Further, the sealing hole is shoulder hole, and the shoulder hole is less than the other end close to the diameter of shell one end
Diameter, the fluid sealant are located at the path section of the shoulder hole close to one end of housing.
Further, the cylinder is provided with external screw thread, and the internal thread being adapted with external screw thread is provided with the mounting hole.
Further, the base is provided with seal groove, and sealing ring is provided with the seal groove.
Further, between external screw thread and piezoelectric element of the seal groove on cylinder.
Further, the acoustic matching layer is made up of glass, epoxy resin or ceramics, the acoustic resistance of the acoustic matching layer
Anti- rate is 0.1-0.8MRayl, and the specific acoustic impedance of the housing is 1-8MRayl；The housing is made of metal.
Further, the piezoelectric element is connected with connecting line close to one end of fluid sealant, and the connecting line fluid sealant is simultaneously
Stretch out sealing hole.
Further, the thickness of the acoustic matching layer is 2-8mm；The external diameter of the housing is 15-21mm.
Beneficial effects of the present invention：Base of the present invention include cylinder and with the integrally formed square peace of the cylinder
Loading board, by above-mentioned understructure, installing plate is fixed on ultrasonic flowmeter by screw, it is by base and super compared to existing
Sonic flowmeter directly using threaded connection, reduces the length of base, and then reduces the space-consuming of transducer, is easy to pacify
Dress.
Brief description of the drawings
Fig. 1 is the sectional view of transducer of the present invention；
Fig. 2 is the sectional view of housing of the present invention；
Fig. 3 is the structural representation of base of the present invention.
In figure：
1st, housing；11st, mounting hole；2nd, acoustic matching layer；3rd, piezoelectric element；4th, base；41st, cylinder；411st, seal groove；
42nd, installing plate；421st, connecting hole；43rd, sealing hole；5th, fluid sealant；6th, sealing ring.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
As shown in Figures 1 to 3, a kind of ultrasonic flowmeter transducer is present embodiments provided, including provided with mounting hole 11
Housing 1, the acoustic matching layer 2 and piezoelectric element 3 being installed on successively in the mounting hole 11, and be tightly connected with housing 1 and
One end presses on the base 4 of piezoelectric element 3, piezoelectric element 3 and acoustic matching layer 2 sealing located at housing 1 and base 4 it
Between；The base 4 includes cylinder 41 and passed through with the integrally formed square installing plate 42 of the cylinder 41, the installing plate 42
Screw is fixed on ultrasonic flowmeter.Installing plate is fixed on ultrasonic flow rate by the present embodiment by above-mentioned understructure by screw
Meter, it is threadedly coupled compared to existing directly use base with ultrasonic flowmeter, reduces the length of base, and then reduce
The space-consuming of transducer, is easily installed.
Specifically, in the present embodiment, connecting hole 421, the transducing described in the present embodiment are arranged with the installing plate 42
Device is installed on the shell of ultrasonic flowmeter by connecting hole 421 and screw.
The material of acoustic matching layer 2 described in the present embodiment is glass, epoxy resin or ceramics, and piezoelectric element 3 has hair
The amphicheirality for penetrating and receiving, and in actual use, the transducer of two Relative distributions is set, in reality on ultrasonic flowmeter
During work, wherein double matching Rotating fields that the generation end of a transducer is made up of characteristic signal acoustic matching layer 2 and housing 1
Be emitted into fluid, until receive characteristic signal with the receiving terminal of another transducer, the characteristic signal will successively from housing 1,
Acoustic matching layer 2 arrives at piezoelectric element 3.The specific acoustic impedance of acoustic matching layer 2 described in the present embodiment between 0.1-0.8MRayl,
The specific acoustic impedance of housing 1 can measure specific acoustic impedance between 1-8MRayl, by above-mentioned acoustic matching layer 2 and housing 1 and exist
Below 1MRayl fluid.The thickness of acoustic matching layer 2 is determined according to the required specific acoustic impedance of the acoustic matching layer 2,
The thickness of acoustic matching layer 2 described in the present embodiment is 2-8mm；The external diameter of the housing 1 is also according to required specific acoustic impedance
It is determined that the external diameter of housing 1 described in the present embodiment is 15-21mm.
The acoustic impedance match of single matching layer is relatively complicated, and needs to use composite Materials Design, only using feature
Acoustic impedance values characteristic signal can be sent and received, meet that the composite Materials Design of above-mentioned condition is not easy to obtain in addition
.Double matching Rotating fields that acoustic matching layer 2 and housing 1 described in the present embodiment are formed improve the conversion effect of piezoelectric element 4
Rate, it ensure that preferable acoustic wave transmission coefficient.
As shown in figure 3, in the present embodiment, through sealing hole 43 is provided with the base 4, the sealing hole 43 is close to piezoelectricity
One end of element 3 is provided with fluid sealant 5.It is ensure that by fluid sealant 5 between sealing hole 43 and piezoelectric element 3 between contact site
It is tightly connected.
The sealing hole 43 is shoulder hole, and diameter of the shoulder hole close to the one end of housing 1 is less than the diameter of the other end, institute
Fluid sealant 5 is stated located at the path section of the shoulder hole close to one end of housing 1.
The cylinder 41 is provided with external screw thread, and the internal thread being adapted with external screw thread 41 is provided with the mounting hole 11.Institute
State base 4 and housing 1 and realization the two it is connected by the matching of the external screw thread on cylinder 41 and the internal thread in mounting hole 11
Between connection.Wherein described internal thread and external screw thread select fine thread, and spiral shell is produced after can effectively preventing long-time use
Line loosens.In order to ensure the sealing effectiveness between base 4 and housing 1, the wall of the mounting hole 11 possesses higher surface light
Cleanliness, specifically reach 3.2 μm or higher.The surface smoothness of the wall of mounting hole 11 described in the present embodiment is 3.2 μm.
In order to meet actual use demand, it is desirable to housing 1 described in the present embodiment is metal shell, and the wall thickness of housing 1 with
And the internal thread on mounting hole 11 disclosure satisfy that and be used in the environment of below 10MPa and -40 DEG C to+120 DEG C.
As shown in Figures 2 and 3, the base 4 is provided with seal groove 411, and the seal groove 411 is outer on cylinder 41
Between screw thread and piezoelectric element 3, sealing ring 6 is arranged in seal groove 411, the sealing realized between housing 1 and base 4 connects
Connect.Acoustic matching layer 2 and piezoelectric element 3 are sealed between base 4 and housing 1 by sealing ring 6 and fluid sealant 5.This reality
It is O-ring seal to apply the example sealing ring 6.
In the present embodiment, the piezoelectric element 3 is connected with connecting line 7 close to one end of fluid sealant 5, the connecting line 7
The other end is through fluid sealant 5 and stretches out sealing hole 43.The piezoelectric element 3 is connected to ultrasonic flowmeter by connecting line 7, realizes
Therebetween signal transmission.
When making the transducer described in the present embodiment, acoustic matching layer 2 and piezoelectric element 3 are sequentially placed into housing first
In 1 mounting hole 11, then sealing ring 6 is arranged in seal groove 411, then the base 4 of sealing ring 6 will be installed by inside and outside
The cooperation of screw thread is installed on housing 1, then carries out encapsulating to base 4, and specifically fluid sealant 5 is filled into sealing hole 43, is formed
Liao Jiaofeng areas, that is, complete the making of transducer.The transducer to complete is fixed on ultrasound by screw through connecting hole 421
On the shell of flowmeter.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating example of the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (10)
1. a kind of ultrasonic flowmeter transducer, it is characterised in that including the housing (1) provided with mounting hole (11), install successively
Supported in acoustic matching layer (2) and piezoelectric element (3) in the mounting hole (11), and with housing (1) sealed connection and one end
The base (4) of piezoelectric element (3) is pressed on, the piezoelectric element (3) and acoustic matching layer (2) sealing are located at housing (1) and base
(4) between；The base (4) include cylinder (41) and with the integrally formed square installing plate (42) of the cylinder (41), institute
State installing plate (42) and ultrasonic flowmeter is fixed on by screw.
2. ultrasonic flowmeter transducer according to claim 1, it is characterised in that symmetrically set on the installing plate (42)
There is connecting hole (421), the installing plate (42) is fixed on ultrasonic flowmeter by screw through connecting hole.
3. ultrasonic flowmeter transducer according to claim 2, it is characterised in that run through on the base (4) and be provided with
Sealing hole (43), the sealing hole (43) are provided with fluid sealant (5) close to one end of piezoelectric element (3).
4. ultrasonic flowmeter transducer according to claim 3, it is characterised in that the sealing hole (43) is ladder
Hole, diameter of the shoulder hole close to housing (1) one end are less than the diameter of the other end, and the fluid sealant (5) is located at the ladder
The path section in hole is close to one end of housing (1).
5. ultrasonic flowmeter transducer according to claim 4, it is characterised in that the cylinder (41) is provided with outer spiral shell
Line, the mounting hole (11) is interior to be provided with the internal thread being adapted with external screw thread.
6. ultrasonic flowmeter transducer according to claim 5, it is characterised in that the base (4) is provided with sealing
Groove (411), the seal groove (411) is interior to be provided with sealing ring (6).
7. ultrasonic flowmeter transducer according to claim 6, it is characterised in that the seal groove (411) is located at post
Between external screw thread and piezoelectric element (3) on body (41).
8. ultrasonic flowmeter transducer according to claim 7, it is characterised in that the acoustic matching layer (2) is by glass
Glass, epoxy resin or ceramics are made, and the specific acoustic impedance of the acoustic matching layer (2) is 0.1-0.8MRayl, the housing (1)
Specific acoustic impedance is 1-8MRayl, and the housing (1) is made of metal.
9. ultrasonic flowmeter transducer according to claim 8, it is characterised in that the piezoelectric element (3) is close to close
One end of sealing (5) is connected with connecting line (7), and the connecting line (7) is through fluid sealant (5) and stretches out sealing hole (43).
10. ultrasonic flowmeter transducer according to claim 9, it is characterised in that the thickness of the acoustic matching layer (2)
Spend for 2-8mm, the external diameter of the housing (1) is 15-21mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710800366.0A CN107436166A (en) | 2017-09-07 | 2017-09-07 | A kind of ultrasonic flowmeter transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710800366.0A CN107436166A (en) | 2017-09-07 | 2017-09-07 | A kind of ultrasonic flowmeter transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107436166A true CN107436166A (en) | 2017-12-05 |
Family
ID=60461597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710800366.0A Pending CN107436166A (en) | 2017-09-07 | 2017-09-07 | A kind of ultrasonic flowmeter transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107436166A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111656147A (en) * | 2018-01-30 | 2020-09-11 | Pi 陶瓷有限责任公司 | Ultrasound transducer with a piezoceramic and method for producing such an ultrasound transducer |
| CN114101019A (en) * | 2022-01-26 | 2022-03-01 | 青岛鼎信通讯股份有限公司 | Ultrasonic transducer applied to water meter |
| US12016246B2 (en) | 2018-01-30 | 2024-06-18 | Pi Ceramic Gmbh | Ultrasonic transducer with a piezoceramic and method for producing an ultrasonic transducer of this kind |
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|---|---|---|---|---|
| CN101524682A (en) * | 2009-03-31 | 2009-09-09 | 广州多浦乐电子科技有限公司 | High-frequency ultrasonic transducer made of piezoelectric monocrystalline composite material as well as manufacturing method and application thereof |
| CN202338338U (en) * | 2011-12-11 | 2012-07-18 | 贵州航天凯山石油仪器有限公司 | Ultrasonic transducer |
| CN202453015U (en) * | 2011-12-26 | 2012-09-26 | 宁波水表股份有限公司 | Ultrasonic water meter transducer |
| CN104034804A (en) * | 2014-06-19 | 2014-09-10 | 中航复合材料有限责任公司 | Integrated impulse ultrasound-sound transmitting transducer for detecting composite materials |
| CN204115788U (en) * | 2014-03-11 | 2015-01-21 | 东京计装株式会社 | Ultrasonic flow meter |
| CN105268619A (en) * | 2015-11-19 | 2016-01-27 | 浙江大学 | Gas ultrasonic transducer with metal protection film structure at front end of matching layer |
| CN207215204U (en) * | 2017-09-07 | 2018-04-10 | 上海一诺仪表有限公司 | A kind of ultrasonic flowmeter transducer |
-
2017
- 2017-09-07 CN CN201710800366.0A patent/CN107436166A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101524682A (en) * | 2009-03-31 | 2009-09-09 | 广州多浦乐电子科技有限公司 | High-frequency ultrasonic transducer made of piezoelectric monocrystalline composite material as well as manufacturing method and application thereof |
| CN202338338U (en) * | 2011-12-11 | 2012-07-18 | 贵州航天凯山石油仪器有限公司 | Ultrasonic transducer |
| CN202453015U (en) * | 2011-12-26 | 2012-09-26 | 宁波水表股份有限公司 | Ultrasonic water meter transducer |
| CN204115788U (en) * | 2014-03-11 | 2015-01-21 | 东京计装株式会社 | Ultrasonic flow meter |
| CN104034804A (en) * | 2014-06-19 | 2014-09-10 | 中航复合材料有限责任公司 | Integrated impulse ultrasound-sound transmitting transducer for detecting composite materials |
| CN105268619A (en) * | 2015-11-19 | 2016-01-27 | 浙江大学 | Gas ultrasonic transducer with metal protection film structure at front end of matching layer |
| CN207215204U (en) * | 2017-09-07 | 2018-04-10 | 上海一诺仪表有限公司 | A kind of ultrasonic flowmeter transducer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111656147A (en) * | 2018-01-30 | 2020-09-11 | Pi 陶瓷有限责任公司 | Ultrasound transducer with a piezoceramic and method for producing such an ultrasound transducer |
| US12016246B2 (en) | 2018-01-30 | 2024-06-18 | Pi Ceramic Gmbh | Ultrasonic transducer with a piezoceramic and method for producing an ultrasonic transducer of this kind |
| CN114101019A (en) * | 2022-01-26 | 2022-03-01 | 青岛鼎信通讯股份有限公司 | Ultrasonic transducer applied to water meter |
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