CN214416909U - Energy converter - Google Patents
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- CN214416909U CN214416909U CN202022791315.6U CN202022791315U CN214416909U CN 214416909 U CN214416909 U CN 214416909U CN 202022791315 U CN202022791315 U CN 202022791315U CN 214416909 U CN214416909 U CN 214416909U
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- cavity
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- piezoelectric ceramic
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Abstract
The utility model discloses a transducer, which comprises an upper cover, a lower cover, a cable, a piezoelectric ceramic piece, a first colloid and a second colloid; the upper cover comprises a first cavity, the lower cover comprises a second cavity, the upper cover is clamped on the lower cover, and the open end of the first cavity is communicated with the open end of the second cavity; the piezoelectric ceramic plate is arranged on a foam plate, and the foam plate is arranged in the second cavity; the cable extends into the second cavity and is respectively connected with the anode and the cathode of the piezoelectric ceramic sheet; the first colloid is arranged in the first cavity, the second colloid is arranged in the second cavity, and the second colloid covers the piezoelectric ceramic piece and the foam board. Above-mentioned technical scheme passes through the upper cover and the lower cover joint is in the same place for the installation and the dismantlement of transducer are simple, and convenience of customers uses. The transducer has good waterproof and dustproof effects and can be suitable for different environments.
Description
Technical Field
The utility model relates to an ultrasonic ranging technical field especially relates to a transducer.
Background
The ultrasonic transducer has the characteristic of being capable of transmitting in a liquid medium, and generates mechanical vibration to send out ultrasonic waves under the action of an electric field or converts the ultrasonic waves in a space into electric signals to realize the electro-acoustic conversion of the signals by utilizing the positive and reverse piezoelectric effect of piezoelectric ceramics.
Based on different principles, there are a number of different gas flow rate detection modes: calorimetric gas flow sensors, gas flow sensors based on fluid buoyancy, and the like. The temperature change caused by the thermal effect in the working process of the calorimetric gas flow sensor can greatly influence the flow velocity measurement.
Different transducers often can only measure the flow velocity corresponding to a very narrow interval, and the measurement accuracy for the flow velocity in a large range is not high. The transducer has the advantages of complex structure, large size, no contribution to field operation and use, no good disassembly and insufficient sealing performance.
SUMMERY OF THE UTILITY MODEL
Therefore, a transducer is needed to be provided, and the problems of complex structure, poor disassembly and insufficient sealing performance of the transducer are solved.
In order to achieve the above object, the present embodiment provides a transducer, which includes an upper cover, a lower cover, a cable, a piezoelectric ceramic plate, a first colloid, and a second colloid;
the upper cover comprises a first cavity, one side of the first cavity is open, the lower cover comprises a second cavity, one side of the second cavity is open, the upper cover is clamped on the lower cover, and the open end of the first cavity is communicated with the open end of the second cavity;
the piezoelectric ceramic plate is arranged on a foam plate, and the foam plate is arranged in the second cavity;
the cable extends into the second cavity and is respectively connected with the anode of the piezoelectric ceramic piece and the cathode of the piezoelectric ceramic piece;
the first colloid is arranged in the first cavity, the second colloid is arranged in the second cavity, the first colloid seals the clamping position of the first cavity and the second cavity, and the second colloid covers the piezoelectric ceramic plate and the foam board.
Further, the cable penetrates through the upper cover and extends into the first cavity and the second cavity;
the first colloid seals the joint of the cable and the first cavity.
Further, the first colloid is foaming glue, and the second colloid is epoxy glue.
Further, the upper cover also comprises a positioning structure;
the positioning structure is arranged on one side, opposite to the open end of the first cavity, of the upper cover and is used for connecting external equipment.
Further, the piezoelectric ceramic plate and the foam plate are arranged at the bottom of the second cavity;
the opening end of the second cavity is positioned at the top of the lower cover, and the thickness between the bottom of the second cavity and the lower surface of the lower cover is 0.1-0.13 mm.
Further, the piezoelectric ceramic sheet is a lead zirconate titanate piezoelectric ceramic sheet.
Further, the piezoelectricThe ceramic sheet has a size of
Further, the upper cover is an alloy upper cover; or: the lower cover is an alloy lower cover.
Further, the cable line is a two-core shielding cable line.
Further, the foam board is a polyurethane foam board.
Be different from prior art, above-mentioned technical scheme passes through the upper cover and the lower cover joint is in the same place for the installation and the dismantlement of transducer are simple, and convenience of customers uses. The first cavity is filled with first colloid, and first colloid seals up the gap of upper cover and external world, and the second cavity is filled with the second colloid, and the second colloid seals up piezoceramics piece. The transducer has good waterproof and dustproof effects, can be suitable for different environments, and improves the competitiveness of products.
Drawings
Fig. 1 is a schematic cross-sectional view of a transducer according to the present embodiment.
Description of reference numerals:
1. an upper cover;
11. a positioning structure;
2. a cable wire;
3. a lower cover;
4. piezoelectric ceramic plates;
5. a foam board;
6. a second colloid;
7. a first colloid.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, the present embodiment provides a transducer, which includes an upper cover 1, a lower cover 3, a cable 2, a piezoelectric ceramic plate 4, a first colloid 7, and a second colloid 6. The upper cover 1 comprises a first cavity, and one side of the first cavity is open. The lower cover 3 comprises a second cavity, and one side of the second cavity is open. The upper cover 1 is connected to the lower cover 3 in a clamping mode, and the open end of the first cavity is communicated with the open end of the second cavity. The piezoelectric ceramic plate 4 is arranged on a foam plate 5, and the foam plate 5 is arranged in the second cavity. The cable 2 extends into the second cavity, and the cable 2 is respectively connected with the anode of the piezoelectric ceramic piece 4 and the cathode of the piezoelectric ceramic piece 4. The cable 2 is composed of red and white lines, the red and white lines are connected (for example, welded) with the negative electrode of the piezoelectric ceramic piece 4 and the positive electrode of the piezoelectric ceramic piece 4. The first colloid 7 is arranged in the first cavity, the second colloid 6 is arranged in the second cavity, the first colloid 7 seals the clamping joint of the first cavity and the second cavity, and the second colloid 6 covers the piezoelectric ceramic plate 4 and the foam plate 5.
Be different from prior art, above-mentioned technical scheme passes through the upper cover and the lower cover joint is in the same place for the installation and the dismantlement of transducer are simple, and convenience of customers uses. The first cavity is filled with first colloid, and first colloid seals up the gap of upper cover and external world, and the second cavity is filled with the second colloid, and the second colloid seals up piezoceramics piece. The transducer has good waterproof and dustproof effects, can be suitable for different environments, and improves the competitiveness of products.
The transducer is an ultrasonic transducer, the ultrasonic transducer has the characteristic of being capable of propagating in a liquid medium, the ultrasonic transducer utilizes the positive and negative piezoelectric effect of piezoelectric ceramics, generates mechanical vibration under the action of an electric field to send out ultrasonic waves or converts the ultrasonic waves in a space into electric signals to realize the electro-acoustic conversion of the signals, and the transducer can be applied to the measurement of the gas flow velocity.
The first colloid is foaming glue, polyurethane pouring sealant, organic silicon resin pouring sealant, epoxy glue and the like. The second colloid is foaming glue, polyurethane pouring sealant, organic silicon resin pouring sealant, epoxy glue and the like. The epoxy glue has the characteristics of water resistance, oil resistance, strong acid and strong alkali resistance. The first colloid and the second colloid can play roles of water resistance, moisture resistance, dust resistance, insulation, heat conduction, confidentiality, corrosion resistance, temperature resistance and shock resistance after being cured. The first colloid is preferably completely filled in the first cavity, and the second colloid is preferably completely filled in the second cavity. Preferably, the first colloid and the second colloid are different, and if the first colloid is polyurethane pouring sealant, the second colloid is epoxy glue; if the first colloid is organic silicon resin pouring sealant, the second colloid is epoxy glue; if the first colloid is epoxy glue, the second colloid is organic silicon resin pouring glue … …
In this embodiment, the cable 2 passes through the upper cover 1 and extends into the first cavity and the second cavity, and the first colloid seals the joint of the cable 2 and the first cavity. The first colloid seals the gap on the first cavity.
In this embodiment, the cover 1 further comprises a positioning structure 11 for fixing the transducer to an external device. The positioning structure 11 is arranged on one side of the upper cover 1 opposite to the open end of the first cavity, and the positioning structure 11 is used for connecting external equipment. The positioning structure 11 may be a groove set, a snap, a threaded hole, etc. so that the transducer is connected with an external device through the positioning structure 11. Now, the positioning structure 11 shown in fig. 1 is a groove set, and the groove set includes at least one groove, and the groove may be a closed ring shape, and a protrusion set that is snapped into the groove is provided on the external device. The number of projections in the set of projections is adapted to the number of recesses in the set of recesses, for example one projection is inserted into a recess or a plurality of projections are inserted into a recess. The projection of the set of projections is retractable so that the projection can exit the recess. The transducer enables the transducer to be fixed on external equipment through the positioning structure, and then the position of the transducer and the orientation of the detection end are adjusted, so that the detection precision can be improved. Or the groove group can form an external thread form, a screw hole is formed in the external equipment, and the groove group of the external thread can be screwed into the screw hole of the external equipment to realize fixation.
In this embodiment, the piezoelectric ceramic plate 4 and the foam plate 5 are disposed at the bottom of the second cavity; the open end of the second cavity is positioned at the top of the lower cover 3, the thickness between the bottom of the second cavity and the lower surface of the lower cover 3 is 0.1-0.13 mm, and the thickness is suitable for having a certain protection capability, so that the transducer has excellent detection precision. Here, the relationship that the upper cover and the lower cover are arranged up and down is taken as an example: the first cavity is arranged at the lower part of the upper cover, and the open end of the first cavity is communicated with the bottom surface of the upper cover; the second cavity is arranged at the upper part of the lower cover, and the open end of the second cavity is communicated with the top surface of the lower cover.
In some cases, the upper cover and the lower cover may be disposed in a left-right relationship, and a description thereof will not be repeated.
In the embodiment, in order to make the piezoelectric ceramic plate have better sensitivity and adapt to the sizes of the upper cover and the lower cover, the size of the piezoelectric ceramic plate is
By using
The piezoelectric ceramic piece can obtain higher receiving sensitivity under smaller driving voltage, reduce the energy intensity output by the transducer and be suitable for explosion-proof occasions. Or in some embodiments, the size is
Or other size piezoceramic wafers.
In a preferred embodiment, the piezoelectric ceramic sheet is a lead zirconate titanate piezoelectric ceramic sheet, that is, the piezoelectric ceramic sheet is made of a lead zirconate titanate series material. The lead zirconate titanate piezoelectric ceramic plate has better stability.
In the embodiment, in order to improve the high pressure resistance and corrosion resistance of the transducer, the upper cover is an alloy upper cover; or: the lower cover is an alloy lower cover. For example, the alloy can be stainless steel, aluminum alloy, zinc alloy, titanium alloy, nickel-cobalt alloy, iron-chromium-nickel alloy … …, and the upper cover and the lower cover made of these alloys have greater hardness, excellent corrosion resistance and high pressure resistance, and can be suitable for severe environments, for example, can be normally used under an environmental pressure of 10MPa, which greatly improves the service life of the transducer.
In the present embodiment, in order to increase the interference rejection capability of the transducer, the cable 2 is a two-core shielded cable, a twisted pair shielded cable, or the like. For example, the two shielding cables can shield the transducer from the influence of external electromagnetic waves, so that the anti-interference capability of the transducer is improved, and the product competitiveness of the transducer is improved.
In this embodiment, the foam board 5 is a buffer structure, and plays a role of buffering the vibration of the piezoelectric ceramic plate. One side of the foam plate 5 is bonded with the piezoelectric ceramic plate, and the other side of the foam plate 5 is bonded with the second cavity. The foam board is a polyurethane foam board. The foam plate can play a role in resisting resonance of the transducer, so that the detection range and the reliability of the transducer are improved.
The cross sections of the first cavity, the second cavity, the upper cover and the lower cover are circular, oval, rectangular, triangular or polygonal. Preferably, the cross sections of the first cavity, the second cavity, the upper cover and the lower cover are circular, and the piezoelectric ceramic plate is arranged at the center of the second cavity.
For example, the upper cover and the lower cover are clamped, that is, the upper cover is provided with a connecting groove at the open end of the first cavity, the lower cover is provided with a connecting wall at the open end of the second cavity, and the inner wall of the connecting groove is just attached to the outer wall of the connecting wall.
It should be noted that, the piezoelectric ceramic plate and the lower cover or the foam board may be glued once, so as to reduce the possibility of degradation of the piezoelectric ceramic plate and improve the consistency of the product.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (10)
1. A transducer is characterized by comprising an upper cover, a lower cover, a cable, a piezoelectric ceramic piece, a first colloid and a second colloid;
the upper cover comprises a first cavity, one side of the first cavity is open, the lower cover comprises a second cavity, one side of the second cavity is open, the upper cover is clamped on the lower cover, and the open end of the first cavity is communicated with the open end of the second cavity;
the piezoelectric ceramic plate is arranged on a foam plate, and the foam plate is arranged in the second cavity;
the cable extends into the second cavity and is respectively connected with the anode of the piezoelectric ceramic piece and the cathode of the piezoelectric ceramic piece;
the first colloid is arranged in the first cavity, the second colloid is arranged in the second cavity, the first colloid seals the clamping position of the first cavity and the second cavity, and the second colloid covers the piezoelectric ceramic plate and the foam board.
2. The transducer of claim 1, wherein the cable extends through the cover into the first and second cavities;
the first colloid seals the joint of the cable and the first cavity.
3. The transducer according to claim 1 or 2, wherein the first gel is a foam gel and the second gel is an epoxy gel.
4. The transducer of claim 1, wherein the cover further comprises a locating structure;
the positioning structure is arranged on one side, opposite to the open end of the first cavity, of the upper cover and is used for connecting external equipment.
5. The transducer of claim 1, wherein the piezoceramic wafer and the foam plate are arranged at the bottom of the second cavity;
the opening end of the second cavity is positioned at the top of the lower cover, and the thickness between the bottom of the second cavity and the lower surface of the lower cover is 0.1-0.13 mm.
6. The transducer of claim 1, wherein the piezoceramic wafer is a lead zirconate titanate piezoceramic wafer.
7. The transducer of claim 1 or 6, wherein the piezoceramic wafer has dimensions of
。
8. The transducer of claim 1, wherein the upper cover is an alloy upper cover; or: the lower cover is an alloy lower cover.
9. The transducer of claim 1, wherein the cable is a two-core shielded cable.
10. The transducer of claim 1, wherein the foam sheet is a polyurethane foam sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022791315.6U CN214416909U (en) | 2020-11-27 | 2020-11-27 | Energy converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022791315.6U CN214416909U (en) | 2020-11-27 | 2020-11-27 | Energy converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214416909U true CN214416909U (en) | 2021-10-19 |
Family
ID=78050173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022791315.6U Active CN214416909U (en) | 2020-11-27 | 2020-11-27 | Energy converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214416909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113995476A (en) * | 2021-12-30 | 2022-02-01 | 厚凯(北京)医疗科技有限公司 | Ultrasonic knife, ultrasonic knife handle and handle assembly |
-
2020
- 2020-11-27 CN CN202022791315.6U patent/CN214416909U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113995476A (en) * | 2021-12-30 | 2022-02-01 | 厚凯(北京)医疗科技有限公司 | Ultrasonic knife, ultrasonic knife handle and handle assembly |
| CN113995476B (en) * | 2021-12-30 | 2022-04-08 | 厚凯(北京)医疗科技有限公司 | Ultrasonic knife, ultrasonic knife handle and handle assembly |
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