CN202171478U - Probe of ultrasonic flowmeter - Google Patents
Probe of ultrasonic flowmeter Download PDFInfo
- Publication number
- CN202171478U CN202171478U CN2011202997276U CN201120299727U CN202171478U CN 202171478 U CN202171478 U CN 202171478U CN 2011202997276 U CN2011202997276 U CN 2011202997276U CN 201120299727 U CN201120299727 U CN 201120299727U CN 202171478 U CN202171478 U CN 202171478U
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- piezoelectric ceramic
- ceramic wafer
- epoxy resin
- probe
- layer
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- Transducers For Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A probe of an ultrasonic flowmeter comprises a functional plastic housing, an epoxy resin layer, a piezoelectric ceramic wafer, a sound absorption damping layer, a connecting wire, an epoxy resin embedment adhesive layer and a three-core shielding wire; the piezoelectric ceramic wafer is adhered on the functional plastic housing through the high-strength epoxy resin layer; the sound absorption damping layer is stuck on the piezoelectric ceramic wafer; and the connecting wire is connected with the piezoelectric ceramic wafer and the three-core shielding wire. A single probe is encapsulated by the epoxy resin embedment adhesive layer. The probe of the ultrasonic flowmeter is reasonably designed structurally, the problems that the accuracy cannot achieve the international standard under the conditions of small flow or medium flow, which are caused by the change of sensitivity of the piezoelectric ceramic wafer, can be solved. The probe of the ultrasonic flowmeter is stable in performances, higher accuracy can be achieved even at high temperature, and the probe of the ultrasonic flowmeter can be applied to a thermal flowmeter conveniently.
Description
Technical field
The utility model relates to a kind of ultrasonic sensor probe that is used for flowmeter, is specially the ultrasonic flow meter probe.
Background technology
Ultrasonic flow meter probe is the core parts of at present international ultrasonic flow meter, generally by metal shell, and piezoelectric ceramic wafer; Pedestal connects lead, and weld tabs is formed; Piezoelectric ceramic wafer is bonded on the metal shell, and metal shell is equipped with pedestal at the back, and weld tabs also is contained on the pedestal; Be connected with external circuits, connect lead and then connect piezoelectric ceramic wafer and weld tabs.But because the temperature of thermal flow meter probe work is than higher; The piezoelectric property of piezoelectric ceramic wafer is along with variation of temperature often also can change, and sensitivity also can change accordingly, thereby causes when the detection of low discharge, middle flow and high flow capacity, having certain difference with actual flow; Though can proofread and correct through software; Therefore if but each flow situation lower deviation is too big, then often can not take into account, to the standard of the precision that when enterprise application is produced in the amount family planning, is difficult to reach national regulation.
The utility model content
The technical matters that the utility model solved is to provide the ultrasonic flow meter probe, to solve the shortcoming in the above-mentioned background technology.
The technical matters that the utility model solved adopts following technical scheme to realize:
The ultrasonic flow meter probe comprises the functional plastics shell, epoxy resin layer; Piezoelectric ceramic wafer, the sound absorption damping layer connects lead; Epoxy resin embedding adhesive layer and three-core shielding line; Piezoelectric ceramic wafer sticks on the functional plastics shell with high-intensity epoxy resin layer, and the sound absorption damping layer is bonded on the piezoelectric ceramic wafer, connects lead and connects piezoelectric ceramic wafer and three-core shielding line.
In the utility model, said functional plastics shell is pasted with thicker high strength epoxy resin layer, and thickness reaches 0.8mm-2.0mm.
In the utility model, there is one deck sound absorption damping layer the back of said piezoelectric ceramic wafer.
In the utility model, the outside of said probe connects with the three-core shielding line.
In the utility model, said epoxy resin embedding adhesive layer embedding forms an independent probe.
Beneficial effect
The utility model reasonable in design efficiently solves the problem that precision under the low discharge that causes when product changes owing to piezoelectric ceramic wafer sensitivity and the middle flow does not reach GB under HTHP.The utility model stable performance, it is higher at high temperature still can to reach ratio of precision, conveniently is applied to thermal flow meter.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the synoptic diagram of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, Fig. 2, the structural representation of ultrasonic flow meter probe, the synoptic diagram of ultrasonic flow meter probe; The ultrasonic flow meter probe comprises functional plastics shell 1, epoxy resin layer 2; Piezoelectric ceramic wafer 3, sound absorption damping layer 4 connects lead 5; Epoxy resin embedding adhesive layer 6 and three-core shielding line 7; The high-intensity epoxy resin layer 2 of piezoelectric ceramic wafer 3 usefulness sticks on the functional plastics shell 1, and sound absorption damping layer 4 is bonded on the piezoelectric ceramic wafer 3, connects lead 5 and connects piezoelectric ceramic wafer 3 and three-core shielding line 7.
6 embedding of epoxy resin embedding adhesive layer form an independent probe, and functional plastics shell 1 bottom thickness is thicker, and thickness 0.7mm-2.0mm is to guarantee under the environment of HTHP, breakage can not occur, in order to avoid influence performance of products.The glue-line of high strength epoxy resin layer 2 is also thicker; Thickness 0.8mm-2.0mm guarantees can not damage piezoelectric ceramic wafer 3 under the condition of HTHP equally, guarantees that simultaneously piezoelectric ceramic wafer 3 can not break away from from functional plastics shell 1; When introducing sound absorption damping layer 4 can solve at high temperature; When the sensitivity of piezoelectric ceramic wafer 3 changed, the damping action of sound absorption damping layer 4 increased, thereby the precision that guarantees the ultrasonic flow meter probe can not change with temperature variation.Connection lead 5 is connected the assurance signal and not disturbed by circuits outside with three-core shielding line 7.6 embedding of epoxy resin embedding adhesive layer guarantee that product can not receive the influence of the humidity of extraneous air.
More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model; The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described, under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications; These variations and improvement all fall in the utility model scope that requires protection, and the utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. the ultrasonic flow meter probe comprises the functional plastics shell, epoxy resin layer; Piezoelectric ceramic wafer, the sound absorption damping layer connects lead; Epoxy resin embedding adhesive layer and three-core shielding line; It is characterized in that piezoelectric ceramic wafer sticks on the functional plastics shell with high-intensity epoxy resin layer, the sound absorption damping layer is bonded on the piezoelectric ceramic wafer.
2. ultrasonic flow meter probe according to claim 1 is characterized in that said functional plastics shell is pasted with thicker high strength epoxy resin layer, and thickness reaches 0.8mm-2.0mm.
3. ultrasonic flow meter probe according to claim 1 is characterized in that, there is one deck sound absorption damping layer the back of said piezoelectric ceramic wafer.
4. ultrasonic flow meter probe according to claim 1 is characterized in that the outside of probe connects with the three-core shielding line.
5. ultrasonic flow meter probe according to claim 1 is characterized in that the embedding of epoxy resin embedding adhesive layer forms an independent probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202997276U CN202171478U (en) | 2011-08-17 | 2011-08-17 | Probe of ultrasonic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202997276U CN202171478U (en) | 2011-08-17 | 2011-08-17 | Probe of ultrasonic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202171478U true CN202171478U (en) | 2012-03-21 |
Family
ID=45829673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202997276U Expired - Fee Related CN202171478U (en) | 2011-08-17 | 2011-08-17 | Probe of ultrasonic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202171478U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170436A (en) * | 2015-09-25 | 2015-12-23 | 无锡市博阳超声电器有限公司 | Novel ultrasonic transducer |
| CN106768466A (en) * | 2016-11-16 | 2017-05-31 | 石友安 | A kind of transient state based on ultrasonic wave turns to twist the lossless detection method of hot-fluid |
| CN108680211A (en) * | 2018-08-31 | 2018-10-19 | 四川菲罗米特仪表有限公司 | A kind of gas ultrasonic flow sensor |
| WO2019051921A1 (en) * | 2017-09-18 | 2019-03-21 | 苏州市易德龙电子元件科技有限公司 | Ultrasonic sensor |
| CN115007429A (en) * | 2022-04-14 | 2022-09-06 | 威海市天罡仪表股份有限公司 | Transducer for micro-power ultrasonic instrument and preparation method thereof |
-
2011
- 2011-08-17 CN CN2011202997276U patent/CN202171478U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170436A (en) * | 2015-09-25 | 2015-12-23 | 无锡市博阳超声电器有限公司 | Novel ultrasonic transducer |
| CN106768466A (en) * | 2016-11-16 | 2017-05-31 | 石友安 | A kind of transient state based on ultrasonic wave turns to twist the lossless detection method of hot-fluid |
| CN106768466B (en) * | 2016-11-16 | 2019-03-29 | 石友安 | A kind of transient state based on ultrasound turn twists the lossless detection method of hot-fluid |
| WO2019051921A1 (en) * | 2017-09-18 | 2019-03-21 | 苏州市易德龙电子元件科技有限公司 | Ultrasonic sensor |
| CN108680211A (en) * | 2018-08-31 | 2018-10-19 | 四川菲罗米特仪表有限公司 | A kind of gas ultrasonic flow sensor |
| CN115007429A (en) * | 2022-04-14 | 2022-09-06 | 威海市天罡仪表股份有限公司 | Transducer for micro-power ultrasonic instrument and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20130817 |