CN207215204U - A kind of ultrasonic flowmeter transducer - Google Patents
A kind of ultrasonic flowmeter transducer Download PDFInfo
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- CN207215204U CN207215204U CN201721141601.XU CN201721141601U CN207215204U CN 207215204 U CN207215204 U CN 207215204U CN 201721141601 U CN201721141601 U CN 201721141601U CN 207215204 U CN207215204 U CN 207215204U
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- ultrasonic flowmeter
- housing
- base
- piezoelectric element
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Abstract
The utility model 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 described in the utility model 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
It the utility model is related 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.
Utility model content
The purpose of this utility model is to provide a kind of ultrasonic flow rate transducer, to solve to account for existing for existing transducer
With space is big and the low above mentioned problem of conversion efficiency.
To use following technical scheme up to this purpose, the utility model：
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.
The beneficial effects of the utility model：Base described in the utility model includes cylinder and integrally formed with the cylinder
Square installing plate, by above-mentioned understructure, installing plate is fixed on ultrasonic flowmeter by screw, incited somebody to action compared to existing
Base, directly using being threadedly coupled, reduces the length of base with ultrasonic flowmeter, and then reduces the space-consuming of transducer,
It is easily installed.
Brief description of the drawings
Fig. 1 is the sectional view of transducer described in the utility model；
Fig. 2 is the sectional view of housing described in the utility model；
Fig. 3 is the structural representation of base described in the utility model.
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 the technical solution of the utility model 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
Meeting actual use demand, it is desirable to housing 1 described in the present embodiment is metal shell, and on the wall thickness of housing 1 and mounting hole 11
Internal thread disclosure satisfy that and 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, above-described embodiment of the present utility model is used for the purpose of clearly illustrating the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.All made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., should be included in
Within the protection domain of the utility model claims.
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 |
|---|---|---|---|
| CN201721141601.XU CN207215204U (en) | 2017-09-07 | 2017-09-07 | A kind of ultrasonic flowmeter transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721141601.XU CN207215204U (en) | 2017-09-07 | 2017-09-07 | A kind of ultrasonic flowmeter transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207215204U true CN207215204U (en) | 2018-04-10 |
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ID=61823537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721141601.XU Active CN207215204U (en) | 2017-09-07 | 2017-09-07 | A kind of ultrasonic flowmeter transducer |
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| CN (1) | CN207215204U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436166A (en) * | 2017-09-07 | 2017-12-05 | 上海诺仪表有限公司 | A kind of ultrasonic flowmeter transducer |
| RU2815191C1 (en) * | 2020-12-28 | 2024-03-12 | Голдкард Смарт Груп Ко., Лтд. | Ultrasonic transducer |
-
2017
- 2017-09-07 CN CN201721141601.XU patent/CN207215204U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436166A (en) * | 2017-09-07 | 2017-12-05 | 上海诺仪表有限公司 | A kind of ultrasonic flowmeter transducer |
| RU2815191C1 (en) * | 2020-12-28 | 2024-03-12 | Голдкард Смарт Груп Ко., Лтд. | Ultrasonic transducer |
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