CN202676733U - Center-mounted high temperature piezoelectric acceleration sensor - Google Patents
Center-mounted high temperature piezoelectric acceleration sensor Download PDFInfo
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- CN202676733U CN202676733U CN 201220330975 CN201220330975U CN202676733U CN 202676733 U CN202676733 U CN 202676733U CN 201220330975 CN201220330975 CN 201220330975 CN 201220330975 U CN201220330975 U CN 201220330975U CN 202676733 U CN202676733 U CN 202676733U
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Abstract
The purpose of the utility model is to disclose a center-mounted high temperature piezoelectric acceleration sensor which comprises a housing, a connector which is connected with the housing, and a pin which is fixed in the connector. The housing is internally provided with a crystal support body which is orderly provided with a first insulator, a first electrode slice, a first piezoelectric crystal, a second piezoelectric crystal, a second electrode slice, a second insulator and a mass in an alignment way. An upper end of the crystal support body is provided with a thread. An upper part of the mass is provided with a nut. The thread and the nut are mutually matched and locked. The first electrode slice and the second electrode slice are mutually communicated with the pin. The housing and the crystal support body are in mutual welding connection. Compared with the prior art, related problems that vibration measurement is difficult, product rejection rate is high, cost is high and the like under a high temperature condition are completely solved, the sensor works stably under 500 DEG C and is suitable for vibration monitoring in a harsh environment such as aviation, and the purpose of the utility model is realized.
Description
Technical field
The utility model relates to a kind of acceleration transducer, particularly a kind of center installing type high-temperature piezoelectric acceleration transducer of using under the oscillation sensor field hot environment of being applicable to.
Background technology
In the prior art, conventional piezoelectric acceleration transducer generally all is to adopt the PZT piezoelectric ceramics as sensitive material, again by technique assembled package such as gluing, solderings.
But conventional piezoelectric acceleration transducer has vibration survey difficulty under hot conditions, and product rejection rate is high, and the problem that cost is high is so that conventional piezoelectric acceleration transducer cisco unity malfunction under hot conditions.
Therefore, need especially a kind of center installing type high-temperature piezoelectric acceleration transducer, to solve the above-mentioned existing problem that exists.
The utility model content
The purpose of this utility model is to provide a kind of center installing type high-temperature piezoelectric acceleration transducer, for the deficiencies in the prior art, solved vibration survey difficulty under hot conditions fully, product rejection rate is high, the high in cost of production relevant issues, can be applicable to the vibration survey under the hot conditions, can be under the high temperature conditions such as high temperature resistant, anticorrosive, high insulation and high sealing long-term stable operation.
The technical matters that the utility model solves can realize by the following technical solutions:
A kind of center installing type high-temperature piezoelectric acceleration transducer, it is characterized in that, it comprises shell, the connector that is connected with shell and be fixed on contact pin in the connector, in described shell, be provided with the crystal supporter, on the described crystal supporter successively centering be provided with the first insulator, the first electrode slice, the first piezoelectric crystal, the second piezoelectric crystal, the second electrode slice, the second insulator and mass, the upper end of described crystal supporter is provided with screw thread, be provided with nut on described mass top, the locking of working in coordination of described nut and described screw thread, communicate with one another between described the first electrode slice and the second electrode slice and the described contact pin, be welded to connect mutually between described shell and the described crystal supporter.
In an embodiment of the present utility model, be provided with tapping in the side of described shell, described connector is welded on the tapping of described shell side.
In an embodiment of the present utility model, be provided with elastomeric pad between described mass and the described nut.
In an embodiment of the present utility model, be welded to connect mutually by nickel wire between described the first electrode slice and the second electrode slice and the described contact pin.
In an embodiment of the present utility model, base and the top margin of the base of described shell and top margin and described crystal supporter are welded to connect mutually.
In an embodiment of the present utility model, described the first piezoelectric crystal and the second piezoelectric crystal are Curie point greater than 640 degrees centigrade piezoelectric ceramics.
Center of the present utility model installing type high-temperature piezoelectric acceleration transducer has following features:
1, adopts the output of balanced differential mistake proofing formula connector, be effective by shell and installed surface conducting and prevent electromagnetic interference (EMI), must make the output of products stable performance;
2, the shell center drilling is convenient to install, and connector and high temperature output line angle 360 degree are optional;
Normal operation when 3, pure quartz glass insulating material, high temp glass vacuum-sintering, high-temperature piezoelectric pottery and all-sealed structure can be grown hot conditions;
4, linearity is low, amplitude versus frequency characte good and have the output of balanced differences dynamic formula;
5, adopt high temperature resistant design, the stability that install at the center, all-sealed structure has further strengthened product.
Center of the present utility model installing type high-temperature piezoelectric acceleration transducer, compared with prior art, solved vibration survey difficulty under hot conditions fully, product rejection rate is high, the high in cost of production relevant issues, at steady operation below 500 degrees centigrade, be applicable to the vibration monitoring in the harsh and unforgiving environments such as aviation, realize the purpose of this utility model.
Characteristics of the present utility model can be consulted the detailed description of the graphic and following better embodiment of this case and be obtained to be well understood to.
Description of drawings
Fig. 1 is the structural representation of center of the present utility model installing type high-temperature piezoelectric acceleration transducer;
Fig. 2 is the exploded perspective view of center of the present utility model installing type high-temperature piezoelectric acceleration transducer parts;
Fig. 3 is the finished product schematic diagram of center of the present utility model installing type high-temperature piezoelectric acceleration transducer.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As depicted in figs. 1 and 2, center of the present utility model installing type high-temperature piezoelectric acceleration transducer, it comprises shell 100, the connector 200 that is connected with shell 100 and be fixed on contact pin 300 in the connector 200, in described shell 100, be provided with crystal supporter 400, on the described crystal supporter 400 successively centering be provided with insulator 410, piezoelectric crystal 420, electrode slice 430 and mass 440, the upper end of described crystal supporter 400 is provided with screw thread 401, be provided with nut 450 on described mass 440 tops, communicate with one another between described electrode slice 430 and the described contact pin 200, be welded to connect mutually between described shell 100 and the described crystal supporter 400.
In the utility model, be provided with tapping 110 in the side of described shell 100, described connector 200 is welded on the tapping 110 of described shell 100 sides, makes to have better sealing under hot conditions.
In the utility model, be provided with elastomeric pad 460 between described mass 440 and the described nut 450, the locking of working in coordination of described nut 450 and described screw thread 401, the screw thread 401 by elastomeric pad 460 and nut 450 and crystal supporter 400 upper ends adds certain torsion it is locked.
In the utility model, be welded to connect mutually by nickel wire 210 between described electrode slice 430 and the described contact pin 200, make under hot conditions, to have better inoxidizability.
In the utility model, the base 120 of described shell 100 and top margin 130 are welded to connect mutually with base and the top margin of described crystal supporter 400, make to have better impermeability under hot conditions.
In the utility model, described piezoelectric crystal 420 is Curie point greater than 640 degrees centigrade piezoelectric ceramics.
In the utility model, described connector 200 adopts the high temp glass vacuum-sinterings to be connected with described contact pin 300, under hot conditions, when difference is exported, has being connected of good insulation properties and sealing.The selection of whole employing high temperature, high insulation, all-sealed structure make output signal more stable.
In the utility model, described shell 100, connector 200, contact pin 300, elastomeric pad 460 and nut 450 all adopt Ying Kenaier corrosion-and high-temp-resistant alloy.
In the utility model, described insulator 410 adopts pure quartz glass as insulating material.
In the installing type high-temperature piezoelectric acceleration transducer of center of the present utility model, adopt high temp glass vacuum-sintering between connector 200 and the contact pin 300, make under hot conditions, to have better insulativity and sealing; Connector (2) is welded to connect (11) with shell (1) use and makes it the better sealing of hot conditions; Insulator 410, electrode slice 430, piezoelectric crystal 420 and mass 440 are passed successively crystal supporter 400 and use frock centering, guarantee that the angle of lead-in wire between electrode slice 430 and the contact pin 300 is about 45 degree.
Center of the present utility model installing type high-temperature piezoelectric acceleration transducer can carry out Ultrasonic Cleaning and carry out Passivation Treatment having reached the better reliability of product to its parts before assembling.
Above demonstration and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present utility model; 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 changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. center installing type high-temperature piezoelectric acceleration transducer, it is characterized in that, it comprises shell, the connector that is connected with shell and be fixed on contact pin in the connector, in described shell, be provided with the crystal supporter, on the described crystal supporter successively centering be provided with the first insulator, the first electrode slice, the first piezoelectric crystal, the second piezoelectric crystal, the second electrode slice, the second insulator and mass, the upper end of described crystal supporter is provided with screw thread, be provided with nut on described mass top, the locking of working in coordination of described nut and described screw thread, communicate with one another between described the first electrode slice and the second electrode slice and the described contact pin, be welded to connect mutually between described shell and the described crystal supporter.
2. center as claimed in claim 1 installing type high-temperature piezoelectric acceleration transducer is characterized in that, be provided with tapping in the side of described shell, described connector is welded on the tapping of described shell side.
3. center as claimed in claim 1 installing type high-temperature piezoelectric acceleration transducer is characterized in that, is provided with elastomeric pad between described mass and the described nut.
4. center as claimed in claim 1 installing type high-temperature piezoelectric acceleration transducer is characterized in that, is welded to connect mutually by nickel wire between described the first electrode slice and the second electrode slice and the described contact pin.
5. center as claimed in claim 1 installing type high-temperature piezoelectric acceleration transducer is characterized in that, base and the top margin of the base of described shell and top margin and described crystal supporter are welded to connect mutually.
6. center as claimed in claim 1 installing type high-temperature piezoelectric acceleration transducer is characterized in that, described the first piezoelectric crystal and the second piezoelectric crystal are Curie point greater than 640 degrees centigrade piezoelectric ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220330975 CN202676733U (en) | 2012-07-09 | 2012-07-09 | Center-mounted high temperature piezoelectric acceleration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220330975 CN202676733U (en) | 2012-07-09 | 2012-07-09 | Center-mounted high temperature piezoelectric acceleration sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676733U true CN202676733U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220330975 Expired - Fee Related CN202676733U (en) | 2012-07-09 | 2012-07-09 | Center-mounted high temperature piezoelectric acceleration sensor |
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| Country | Link |
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| CN (1) | CN202676733U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768289A (en) * | 2016-12-28 | 2017-05-31 | 山东大学 | A kind of new type high temperature piezoelectric vibration sensors |
| CN110068704A (en) * | 2019-03-21 | 2019-07-30 | 慧石（上海）测控科技有限公司 | A kind of multi-functional self-compensating high temperature acceleration transducer |
| CN111579815A (en) * | 2020-05-22 | 2020-08-25 | 山东大学 | High-temperature vibration acceleration sensor and assembly method |
-
2012
- 2012-07-09 CN CN 201220330975 patent/CN202676733U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768289A (en) * | 2016-12-28 | 2017-05-31 | 山东大学 | A kind of new type high temperature piezoelectric vibration sensors |
| CN106768289B (en) * | 2016-12-28 | 2019-04-05 | 山东大学 | A kind of high-temperature piezoelectric vibrating sensor |
| CN110068704A (en) * | 2019-03-21 | 2019-07-30 | 慧石（上海）测控科技有限公司 | A kind of multi-functional self-compensating high temperature acceleration transducer |
| CN111579815A (en) * | 2020-05-22 | 2020-08-25 | 山东大学 | High-temperature vibration acceleration sensor and assembly method |
| CN111579815B (en) * | 2020-05-22 | 2021-07-13 | 山东大学 | High-temperature vibration acceleration sensor and assembly method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20210709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |