CN101709985A - Plesoelectric ultrasonic flow sensor - Google Patents
Plesoelectric ultrasonic flow sensor Download PDFInfo
- Publication number
- CN101709985A CN101709985A CN200910193845A CN200910193845A CN101709985A CN 101709985 A CN101709985 A CN 101709985A CN 200910193845 A CN200910193845 A CN 200910193845A CN 200910193845 A CN200910193845 A CN 200910193845A CN 101709985 A CN101709985 A CN 101709985A
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- plesoelectric
- ultrasonic flow
- metal shell
- flow sensor
- pedestal
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Abstract
The invention relates to a plesoelectric ultrasonic flow sensor, belonging to the field of the sensor. The plesoelectric ultrasonic flow sensor consists of a metal shell, wafers, a base, connecting leads and welding pieces. The wafers are arranged on the metal shell; the metal shell is arranged on the base; the welding pieces are arranged on the base; the connecting leads are used for connecting the wafers with the welding pieces; and the end surface of the metal shell is provided with an arc-shaped buffering section which can form elasticity to improve the deforming state of the end surface of the metal shell under liquid pressure. The plesoelectric ultrasonic flow sensor has reasonable structural design, and the problem concerning the stability of the performance of the plesoelectric ultrasonic flow sensor under different application condition is effectively solved so that the plesoelectric ultrasonic flow sensor can be applied conveniently to various occasions needing the plesoelectric ultrasonic flow sensor.
Description
Technical field
Plesoelectric ultrasonic flow sensor of the present invention belongs to sensor field.
Background technology
Plesoelectric ultrasonic flow sensor is the core component of at present international ultrasonic flow meter, be by metal shell, sensor wafer, pedestal connects lead, and weld tabs is formed, sensor wafer is arranged on the metal shell, metal shell is installed on the pedestal, and weld tabs is installed on the pedestal, connects lead and connects sensor wafer and weld tabs.Because the deformation state of metal shell under fluid pressure, sensor wafer is occured bending and deformation, performance for Plesoelectric ultrasonic flow sensor has bigger influence, exist the stability problem under the different application condition, make the Plesoelectric ultrasonic flow sensor product be not suitable for being applied to the various occasions that need the ultrasonic flow metering, therefore a lot of inconvenience are arranged when enterprise uses producing in the amount family planning.
Summary of the invention
The objective of the invention is to avoid the deficiencies in the prior art part, and a kind of stable performance is provided, solved metal shell and under fluid pressure, be out of shape the influence that performance is produced, be conveniently used in the Plesoelectric ultrasonic flow sensor of various flow metering occasions.
The objective of the invention is to reach by following measure, Plesoelectric ultrasonic flow sensor is by metal shell, sensor wafer, pedestal connects lead, weld tabs is formed, sensor wafer is arranged on the metal shell, and metal shell is installed on the pedestal, and weld tabs is installed on the pedestal, connect lead and connect sensor wafer and weld tabs
Be provided with the arc breeze way at the metal shell end face.
Outward flange bending at metal shell, be provided with the arc breeze way in the bending place, edge, the outward flange bending place is connected with pedestal, the arc breeze way forms elasticity, improve the deformation state of metal shell end face under fluid pressure, make the metal shell end face, keep smooth and can not occur bending and deformation in when distortion, paste the possibility that emaciated face falls thereby reduced sensor wafer, can improve the vibrational state of emitting facet.
Pedestal is provided with air hole, can keep the balance of sensor inner and outer air pressure, thereby reduces because the internal pressure that temperature variation causes changes the influence to properties of product.
Pedestal is provided with clamping hole, has made things convenient for installing and using of product.
Pedestal is provided with the weld tabs groove, and weld tabs is placed in the weld tabs groove.
Be provided with the gap between pedestal and sensor wafer, make sensor wafer under pressure, still can keep certain clearance with pedestal, liquid contacts with sensor wafer at general pressure bottom base thereby avoided externally, and sensor wafer is produced pressure, influences vibrating effect; When external pressure is excessive, rise to support protective effect, prevent that deflection is excessive and damage wafer.
Reasonable in design of the present invention efficiently solves the stability problem of product under the different application condition, makes product can be conveniently used in the various occasions that need the ultrasonic flow metering.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is synoptic diagram of the present invention.
Accompanying drawing 3 is base bottom surface structural representations of the present invention.
Accompanying drawing 4 is A portion enlarged diagrams of accompanying drawing 1.
Accompanying drawing 5 is B portion enlarged diagrams of accompanying drawing 1.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As accompanying drawing 1, accompanying drawing 2, shown in the accompanying drawing 3, Plesoelectric ultrasonic flow sensor of the present invention is by metal shell 1, sensor wafer 2, pedestal 3, connect lead 4, weld tabs 5 is formed, and sensor wafer is arranged on the metal shell, metal shell is installed on the pedestal, weld tabs is installed on the pedestal, connects lead and connects sensor wafer and weld tabs, is provided with the arc breeze way at the metal shell end face, outward flange bending at metal shell, be provided with the arc breeze way in the bending place, edge, the outward flange bending place is connected with pedestal, and the arc breeze way forms elasticity, improve the deformation state of metal shell end face under fluid pressure, pedestal is provided with air hole 6, can keep the balance of sensor inner and outer air pressure, and pedestal is provided with clamping hole 10, pedestal is provided with weld tabs groove 9, and weld tabs is placed in the weld tabs groove.
As shown in Figure 4, be provided with the gap between sensor wafer of the present invention and pedestal, clearance distance 0.05～0.5mm, make sensor wafer to keep certain clearance with pedestal, thereby having avoided externally, liquid contacts with sensor wafer at general pressure bottom base, sensor wafer is produced pressure, influence vibrating effect; When external pressure was excessive, the sensor wafer deflection can surpass clearance distance, and at this moment pedestal can withstand wafer, rise to support protective effect, prevented that deflection is excessive and damaged wafer.
As shown in Figure 5, the present invention is in the outward flange bending of metal shell, be provided with arc breeze way 8 in the bending place, edge, the outward flange bending place is connected with pedestal, the arc breeze way forms elasticity, makes the metal shell end face when distortion, keeps smooth and can not occur bending and deformation, paste the possibility that emaciated face falls thereby reduced sensor wafer, can improve the vibrational state of emitting facet.
Claims (6)
1. Plesoelectric ultrasonic flow sensor, by metal shell, sensor wafer, pedestal connects lead, weld tabs is formed, sensor wafer is arranged on the metal shell, and metal shell is installed on the pedestal, and weld tabs is installed on the pedestal, connect lead and connect sensor wafer and weld tabs, it is characterized in that being provided with the arc breeze way at the metal shell end face.
2. Plesoelectric ultrasonic flow sensor according to claim 1 is characterized in that the outward flange bending at metal shell, is provided with the arc breeze way in the bending place, edge, and the outward flange bending place is connected with pedestal.
3. Plesoelectric ultrasonic flow sensor according to claim 1 and 2 is characterized in that pedestal is provided with air hole.
4. Plesoelectric ultrasonic flow sensor according to claim 1 and 2 is characterized in that pedestal is provided with clamping hole.
5. Plesoelectric ultrasonic flow sensor according to claim 1 and 2 is characterized in that pedestal is provided with the weld tabs groove.
6. Plesoelectric ultrasonic flow sensor according to claim 1 and 2 is characterized in that being provided with the gap between pedestal and sensor wafer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910193845A CN101709985A (en) | 2009-11-05 | 2009-11-05 | Plesoelectric ultrasonic flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910193845A CN101709985A (en) | 2009-11-05 | 2009-11-05 | Plesoelectric ultrasonic flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101709985A true CN101709985A (en) | 2010-05-19 |
Family
ID=42402782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910193845A Pending CN101709985A (en) | 2009-11-05 | 2009-11-05 | Plesoelectric ultrasonic flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101709985A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884388A (en) * | 2012-12-21 | 2014-06-25 | 上海一诺仪表有限公司 | Pressure balance type gas ultrasonic transducer |
| CN107402050A (en) * | 2017-07-10 | 2017-11-28 | 汇中仪表股份有限公司 | The pressure-resistant resist freezing structure and method of a kind of sonac piezoelectric ceramic wafer |
| CN107655639A (en) * | 2017-09-01 | 2018-02-02 | 西北工业大学 | Released gas rate detection means |
| CN109141208A (en) * | 2018-10-29 | 2019-01-04 | 中国船舶重工集团公司第七0七研究所 | A kind of highly sensitive and high linearity sensor |
| CN109186439A (en) * | 2018-10-29 | 2019-01-11 | 中国船舶重工集团公司第七0七研究所 | A kind of sensor high stable, highly reliable, low-loss frame member |
-
2009
- 2009-11-05 CN CN200910193845A patent/CN101709985A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884388A (en) * | 2012-12-21 | 2014-06-25 | 上海一诺仪表有限公司 | Pressure balance type gas ultrasonic transducer |
| CN107402050A (en) * | 2017-07-10 | 2017-11-28 | 汇中仪表股份有限公司 | The pressure-resistant resist freezing structure and method of a kind of sonac piezoelectric ceramic wafer |
| CN107402050B (en) * | 2017-07-10 | 2024-01-12 | 汇中仪表股份有限公司 | Pressure-resistant and freezing-resistant structure and method for piezoelectric ceramic wafer of ultrasonic sensor |
| CN107655639A (en) * | 2017-09-01 | 2018-02-02 | 西北工业大学 | Released gas rate detection means |
| CN109141208A (en) * | 2018-10-29 | 2019-01-04 | 中国船舶重工集团公司第七0七研究所 | A kind of highly sensitive and high linearity sensor |
| CN109186439A (en) * | 2018-10-29 | 2019-01-11 | 中国船舶重工集团公司第七0七研究所 | A kind of sensor high stable, highly reliable, low-loss frame member |
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Open date: 20100519 |