CN103487097A - High-temperature-resisting ultrasonic flow sensor - Google Patents
High-temperature-resisting ultrasonic flow sensor Download PDFInfo
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- CN103487097A CN103487097A CN201310425130.5A CN201310425130A CN103487097A CN 103487097 A CN103487097 A CN 103487097A CN 201310425130 A CN201310425130 A CN 201310425130A CN 103487097 A CN103487097 A CN 103487097A
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- pedestal
- flow sensor
- cage
- ultrasonic flow
- pcb board
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Abstract
The invention discloses a high-temperature-resisting ultrasonic flow sensor comprising a base and a metal shell arranged on the outer side of the bottom of the base. A piezoelectric energy-transducing sheet is cling to the metal shell on one inner side of the base. A PCB is further arranged in the base, an insulation cover is arranged above the PCB, an extruding chamber is arranged between the insulation cover and the PCB, and the top of the insulation cover is provided with a signal wiring terminal and a signal wire connected to the signal wiring terminal tightly. According to the high-temperature-resisting ultrasonic flow sensor, the insulation cover is arranged in the base, and the extruding chamber is allowed to form between the insulation cover and the PCB, so that when the sensor is operated in a high-temperature operating state, expanded air at the bottom of the base can enter the extruding chamber and discharged from the signal wire, of the extruding chamber, connected to the signal wiring terminal tightly, accordingly balancing state of pressure inside the sensor can be maintained, structure is more stable, and the high-temperature-resisting ultrasonic flow sensor is applied to the field of ultrasonic sensors.
Description
Technical field
The present invention relates to the ultrasonic sensor field, particularly relate to a kind of ultrasonic flow sensor.
Background technology
The current ultrasonic flow sensor for calorimeter is when high temperature (100 ℃) is worked, extraneous high temperature can make ultrasonic flow sensor inside, and when gases are heated, they expand, and because ultrasonic flow sensor is a complete hermetic state, the gas of sensor internal can't be discharged, thereby can make the pressure of sensor internal increase, air penetration is in the glue-line between transduction piece and betal can, make the bonding glue-line in sensor separate, thereby cause the inefficacy of product sensor function.
Summary of the invention
For addressing the above problem, the invention provides the resistant to elevated temperatures ultrasonic flow sensor that a kind of structure is more stable.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of resistant to elevated temperatures ultrasonic flow sensor, comprise pedestal and the metal shell that is arranged at the base bottom outside, be positioned at pedestal one side on metal shell and be covered with the piezoelectric energy-conversion sheet, also be provided with pcb board in pedestal, the top of pcb board is provided with cage, leave extrusion chamber between cage and pcb board, the top of cage is provided with the signal terminal mouth and reaches and the airtight signal wire be connected of signal terminal mouth.
Be further used as the improvement of technical solution of the present invention, the top that is positioned at cage in pedestal is provided with packaging plastic, and packaging plastic seals the junction of cage and cage and signal wire.
Be further used as the improvement of technical solution of the present invention, the top that is positioned at the piezoelectric energy-conversion sheet in pedestal is provided with the housing pedestal of hollow out, and pcb board is positioned at the top of housing pedestal, and pcb board is provided with hollow hole.
Be further used as the improvement of technical solution of the present invention, be connected with signal wire and be provided with some fine rules that are connected with the piezoelectric energy-conversion sheet through hollow hole.
Be further used as the improvement of technical solution of the present invention, the center of housing pedestal is provided with base recess, and the surrounding of housing pedestal also is provided with the fine rule communicated with base recess and picks out hole.
Be further used as the improvement of technical solution of the present invention, cage is to cover crown cap on pcb board or the cone-shaped hood of plastic material.
Beneficial effect of the present invention: this resistant to elevated temperatures ultrasonic flow sensor arranges cage in pedestal, and make between cage and pcb board and form extrusion chamber, make sensor when the hot operation state, the expanding gas of base bottom can enter extrusion chamber, and discharge in the airtight signal wire be connected of the signal terminal mouth with extrusion chamber, thereby keep the equilibrium state of sensor internal pressure, make its structure more stable.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention one-piece construction schematic diagram;
Fig. 2 is embodiment of the present invention base construction detailed maps;
Fig. 3 is embodiment of the present invention base construction vertical view.
Embodiment
With reference to Fig. 1～Fig. 3, the present invention is a kind of resistant to elevated temperatures ultrasonic flow sensor, comprise pedestal 3 and the metal shell 2 that is arranged at pedestal 3 bottom outside, be positioned at pedestal 3 one sides on metal shell 2 and be covered with piezoelectric energy-conversion sheet 1, also be provided with pcb board 7 in pedestal 3, the top of pcb board 7 is provided with cage 4, and 7 of cage 4 and pcb boards leave extrusion chamber 41, and the top of cage 4 is provided with signal terminal mouth 42 and reaches and the airtight signal wire 6 that is connected of signal terminal mouth 42.
This resistant to elevated temperatures ultrasonic flow sensor is at the interior cage 4 that arranges of pedestal 3, and make cage 4 and 7 of pcb boards form extrusion chamber 41, make sensor when the hot operation state, the expanding gas of pedestal 3 bottoms can enter extrusion chamber 41, and from the interior discharge of the airtight signal wire be connected 6 of the signal terminal mouth 42 with extrusion chamber 41, thereby keep the equilibrium state of sensor internal pressure, make its structure more stable.
As the preferred embodiment of the present invention, the top that is positioned at cage 4 in pedestal 3 is provided with packaging plastic 5, and packaging plastic 5 seals cage 4 and cage 4 with the junction of signal wire 6.
As the preferred embodiment of the present invention, the top that is positioned at piezoelectric energy-conversion sheet 1 in pedestal 3 is provided with the housing pedestal 31 of hollow out, and pcb board 7 is positioned at the top of housing pedestal 31, and pcb board 7 is provided with hollow hole.
As the preferred embodiment of the present invention, be connected with signal wire 6 and be provided with some fine rules that are connected with piezoelectric energy-conversion sheet 1 through hollow hole.
As the preferred embodiment of the present invention, housing pedestal 31 center is provided with base recess 312, and the surrounding of housing pedestal 31 also is provided with the fine rule communicated with base recess 312 and picks out hole 311.
The hollow hole arranged on the housing pedestal 31 of hollow out, pcb board 7 and fine rule pick out hole 311 and all can facilitate wearing of inner fine rule, but it is more main, can facilitate the circulation of pedestal 3 interior gases, make the gas in pedestal 3 to discharge by extrusion chamber 41 and signal wire 6.
The expanding gas of sensor base can pick out by the fine rule on the housing pedestal 31 of hollow out hole 311 and discharge, and, move to the vent port at pcb board 7 centers along base recess 312 after, through extrusion chamber 41 and signal wire 6, discharges.
As the preferred embodiment of the present invention, cage 4 is for covering crown cap on pcb board 7 or the cone-shaped hood of plastic material.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and the modification that these are equal to or replacement all are included in the application's claim limited range.
Claims (6)
1. a resistant to elevated temperatures ultrasonic flow sensor, it is characterized in that: comprise pedestal (3) and be arranged at the metal shell (2) of described pedestal (3) bottom outside, be positioned at pedestal (3) one sides on described metal shell (2) and be covered with piezoelectric energy-conversion sheet (1), also be provided with pcb board (7) in described pedestal (3), the top of described pcb board (7) is provided with cage (4), leave extrusion chamber (41) between described cage (4) and pcb board (7), the top of described cage (4) is provided with signal terminal mouth (42) and reaches and the airtight signal wire (6) that is connected of described signal terminal mouth (42).
2. resistant to elevated temperatures ultrasonic flow sensor according to claim 1, it is characterized in that: the top that is positioned at cage (4) in described pedestal (3) is provided with packaging plastic (5), and described packaging plastic (5) seals cage (4) and cage (4) with the junction of signal wire (6).
3. resistant to elevated temperatures ultrasonic flow sensor according to claim 1, it is characterized in that: the top that is positioned at piezoelectric energy-conversion sheet (1) in described pedestal (3) is provided with the housing pedestal (31) of hollow out, described pcb board (7) is positioned at the top of housing pedestal (31), and described pcb board (7) is provided with hollow hole.
4. resistant to elevated temperatures ultrasonic flow sensor according to claim 3, is characterized in that: be connected with described signal wire (6) and be provided with some fine rules that are connected with piezoelectric energy-conversion sheet (1) through hollow hole.
5. resistant to elevated temperatures ultrasonic flow sensor according to claim 3, it is characterized in that: the center of described housing pedestal (31) is provided with base recess (312), and the surrounding of described housing pedestal (31) also is provided with the fine rule communicated with base recess (312) and picks out hole (311).
6. resistant to elevated temperatures ultrasonic flow sensor according to claim 1 and 2 is characterized in that: described cage (4) is for covering crown cap on pcb board (7) or the cone-shaped hood of plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310425130.5A CN103487097B (en) | 2013-09-17 | 2013-09-17 | High-temperature-resisting ultrasonic flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310425130.5A CN103487097B (en) | 2013-09-17 | 2013-09-17 | High-temperature-resisting ultrasonic flow sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103487097A true CN103487097A (en) | 2014-01-01 |
| CN103487097B CN103487097B (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310425130.5A Active CN103487097B (en) | 2013-09-17 | 2013-09-17 | High-temperature-resisting ultrasonic flow sensor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5797404A (en) * | 1980-12-10 | 1982-06-17 | Showa Electric Wire & Cable Co Ltd | Measuring device for thickness of cable sheath |
| US20110104943A1 (en) * | 2009-11-04 | 2011-05-05 | Hitachi Cable, Ltd | Wire harness and method of manufacturing the same |
| CN202092692U (en) * | 2011-05-09 | 2011-12-28 | 广州市番禺奥迪威电子有限公司 | Ultrasonic wave flow sensor with dirty proof layer |
| CN202120602U (en) * | 2011-07-07 | 2012-01-18 | 杨政委 | Piezoelectric type squealer |
| CN202836645U (en) * | 2012-11-05 | 2013-03-27 | 上官明禹 | High-pressure-resisting and corrosion-resisting ultrasonic gas flow energy converter |
| CN203011603U (en) * | 2012-12-13 | 2013-06-19 | 长沙南车电气设备有限公司 | Pressure transmitter |
| CN203479345U (en) * | 2013-09-17 | 2014-03-12 | 广州市番禺奥迪威电子有限公司 | High-temperature-resistant ultrasonic wave flow sensor |
-
2013
- 2013-09-17 CN CN201310425130.5A patent/CN103487097B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5797404A (en) * | 1980-12-10 | 1982-06-17 | Showa Electric Wire & Cable Co Ltd | Measuring device for thickness of cable sheath |
| US20110104943A1 (en) * | 2009-11-04 | 2011-05-05 | Hitachi Cable, Ltd | Wire harness and method of manufacturing the same |
| CN202092692U (en) * | 2011-05-09 | 2011-12-28 | 广州市番禺奥迪威电子有限公司 | Ultrasonic wave flow sensor with dirty proof layer |
| CN202120602U (en) * | 2011-07-07 | 2012-01-18 | 杨政委 | Piezoelectric type squealer |
| CN202836645U (en) * | 2012-11-05 | 2013-03-27 | 上官明禹 | High-pressure-resisting and corrosion-resisting ultrasonic gas flow energy converter |
| CN203011603U (en) * | 2012-12-13 | 2013-06-19 | 长沙南车电气设备有限公司 | Pressure transmitter |
| CN203479345U (en) * | 2013-09-17 | 2014-03-12 | 广州市番禺奥迪威电子有限公司 | High-temperature-resistant ultrasonic wave flow sensor |
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| Publication number | Publication date |
|---|---|
| CN103487097B (en) | 2017-04-19 |
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Address after: 511400, Dongsheng Industrial Zone, east ring street, Guangzhou, Guangdong, Panyu District 9 Applicant after: Prestige sensing Science and Technology Co., Ltd. of Guangdong Audi Address before: 511400, Dongsheng Industrial Zone, east ring street, Guangzhou, Guangdong, Panyu District 9 Applicant before: Guangzhou Panyu Aodiwei Electronic Co., Ltd. |
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