CN201803740U - Waterproof structure of piezoelectric ultrasonic transducer - Google Patents
Waterproof structure of piezoelectric ultrasonic transducer Download PDFInfo
- Publication number
- CN201803740U CN201803740U CN2010202220234U CN201020222023U CN201803740U CN 201803740 U CN201803740 U CN 201803740U CN 2010202220234 U CN2010202220234 U CN 2010202220234U CN 201020222023 U CN201020222023 U CN 201020222023U CN 201803740 U CN201803740 U CN 201803740U
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- Prior art keywords
- ultrasonic transducer
- wedge
- housing
- piezoelectric ultrasonic
- sound wedge
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Abstract
The utility model discloses a waterproof structure of a piezoelectric ultrasonic transducer, which includes a cylindrical housing, wherein a housing cap is arranged at one end of the housing, an acoustic wedge is arranged at the other end of the housing, and a piezoelectric wafer is arranged between the acoustic wedge and the housing cap. The waterproof structure is characterized in that a first sealing device is arranged between the inner end surface of the housing and the end surface of the acoustic wedge, and a second sealing device is arranged between the inner surface of the housing and the peripheral wall of the acoustic wedge. The waterproof structure has the advantages that the waterproof structure of the piezoelectric ultrasonic transducer can realize multiple sealing in different directions, the sealing performance is improved, and the complete waterproof effect can be achieved even under a high water pressure.
Description
Technical field
The utility model relates to a kind of waterproof construction, relates in particular to a kind of waterproof construction of piezoelectric ultrasonic transducer.
Background technology
Piezoelectric ultrasonic transducer (also can claim probe) comprises Stainless Steel Shell, the piezoelectric chip that the sound wedge of housing front end and the sound wedge back side in the housing are fixed with, the lead of piezoelectric chip is connected with the cable that penetrates housing, it is a kind of energy transducer that realization electric energy the most commonly used in the Ultrasonic Detection and acoustic energy are changed mutually, it is the important component part of supersonic detection device, the waterproof construction of existing piezoelectric ultrasonic transducer adopts cylindrical case to add epoxy encapsulation mostly, but under the very high situation of fluid pressure, be difficult to reach complete good waterproof effect, not only influence the serviceable life of transducer, and have a strong impact on measuring accuracy, and in case leak just can't operate as normal.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of good seal performance, also can reach the waterproof construction of the piezoelectric ultrasonic transducer of waterproof effect under high hydraulic pressure.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of waterproof construction of piezoelectric ultrasonic transducer, comprise housing cylindraceous, described housing one end is provided with the shell cap, the described housing other end is provided with sound wedge, be provided with piezoelectric chip between described sound wedge and the described shell cap, it is characterized in that: be provided with first packoff between described housing inner face and the described sound wedge end face, be provided with second packoff between described shell inner surface and the described sound wedge periphery wall.
Described housing inner face is provided with first annular groove, and described first packoff is the O RunddichtringO of inlay card in described first annular groove.
Described sound wedge periphery wall is provided with wedge ring connected in star, described sound wedge ring connected in star be provided with the sound wedge screens of annular away from shell cap side, described shell inner surface is provided with and corresponding second annular groove of described sound wedge ring connected in star, the width that the width of described second annular groove equals the wedge screens of described sound and described sound wedge ring connected in star with
Described second packoff is two O RunddichtringO and the described sound wedge screens of inlay card in described second annular groove.
Space between described sound wedge and the described housing is provided with cementing agent.
Described shell cap outer face is provided with sealed groove, described sealed groove is communicated with and is used for wire hole that the lead of described piezoelectric chip is drawn, the aperture of described wire hole is less than the aperture of described sealed groove, described shell cap outer face radially is provided with described sealed groove connects and goes out wire casing, and described shell cap surface is provided with the screens groove.
Fill the silicon rubber that is used to seal in the described sealed groove.
Described cementing agent is an epoxy resin.
Compared with prior art, advantage of the present utility model is: owing to be provided with first packoff between housing inner face and the sound wedge end face, be provided with second packoff between shell inner surface and the sound wedge periphery wall, make the waterproof construction of piezoelectric ultrasonic transducer realize in different directions multi-sealed, improved sealing property, even under high hydraulic pressure, also can reach complete good waterproof effect;
Because the housing inner face is provided with first annular groove, first packoff is the O RunddichtringO of inlay card in first annular groove, realizes the first order sealing of the waterproof construction of piezoelectric ultrasonic transducer;
Since sound wedge periphery wall be provided with wedge ring connected in star, sound wedge ring connected in star be provided with the sound wedge screens of annular away from shell cap side, shell inner surface is provided with and corresponding second annular groove of sound wedge ring connected in star, the width of second annular groove equal wedge screens and sound wedge ring connected in star width and, second packoff is the two O RunddichtringO harmony wedge screens of inlay card in second annular groove, thereby realize the second level sealing of the waterproof construction of piezoelectric ultrasonic transducer, and can prevent bounce effect that wedge is subjected to the 2nd O RunddichtringO piezoelectric ultrasonic transducer housing that falls back out;
Because the space between sound wedge and the housing is provided with cementing agent, thereby the third level of realizing the waterproof construction of piezoelectric ultrasonic transducer seals, and reaches complete good waterproof effect.
Because shell cap outer face is provided with sealed groove, sealed groove is communicated with shell and is used for wire hole that the piezoelectric chip lead is drawn, the aperture of wire hole is less than the aperture of sealed groove, shell cap outer face radially is provided with sealed groove connects and goes out wire casing, the shell cap surface is provided with the screens groove, after the piezoelectric chip lead can being drawn from wire hole, be installed in the pipeline inclined tube through going out wire casing, utilize the screens groove that piezoelectric ultrasonic transducer is fixed in the pipeline inclined tube then, prevent to rotate in the piezoelectric ultrasonic transducer installation process, damage sensor lead.
Description of drawings
Fig. 1 is the longitudinal section of the waterproof construction of the utility model piezoelectric ultrasonic transducer.
Fig. 2 be the utility model piezoelectric ultrasonic transducer waterproof construction sound wedge structural representation.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of waterproof construction of piezoelectric ultrasonic transducer, comprise that housing 1 cylindraceous, housing 1 one ends are provided with shell cap 2, the other end is provided with wedge 4, be provided with piezoelectric chip between sound wedge 4 and the shell cap 2, be provided with first packoff 5 between housing inner face 3 and the sound wedge end face, be provided with second packoff 8 between shell inner surface and the sound wedge periphery wall.
Wherein, housing inner face 3 is provided with first annular groove, and first packoff 5 is the O RunddichtringO of inlay card in first annular groove; Sound wedge periphery wall is provided with wedge ring connected in star 6, sound wedge ring connected in star 6 be provided with the sound wedge screens 7 of annular away from shell cap side, shell inner surface be provided with and sound wedge ring connected in star 6 corresponding second annular grooves, the width of second annular groove equal wedge screens 7 and sound wedge ring connected in star 6 width and, second packoff 8 is the two O RunddichtringO harmony wedge screens 7 of inlay card in second annular groove; Space between sound wedge 2 and the housing 1 is provided with epoxy resin or other can be used for the cementing agent of waterproof.
The principle of work of the waterproof construction of a kind of piezoelectric ultrasonic transducer of the utility model:
First order waterproof: an O RunddichtringO is installed in first annular groove of piezoelectric ultrasonic transducer Stainless Steel Shell 1, after piezoelectric ultrasonic transducer sound wedge 4 soaked epoxy resin, be pressed in the piezoelectric ultrasonic transducer Stainless Steel Shell 1, the end face and an O RunddichtringO of sound wedge 4 are combined closely, and play first order waterproof effect;
Second level waterproof: the 2nd O RunddichtringO is installed in sound wedge ring connected in star 6, when being pressed into housing 1,, the 2nd O RunddichtringO has good elasticity owing to having, after being squeezed, reduced, when being pressed in second annular groove in the housing 1, recover elasticity again, fill up the second annular groove harmony wedge ring connected in star 6, sound wedge screens 7 simultaneously also enters in second annular groove of housing 1, inlay card is in second annular groove, be used to prevent effect that wedge 4 the is subjected to bounce piezoelectric ultrasonic transducer housing 1 that falls back out, play second level waterproof effect like this;
Third level waterproof: the space filling epoxy resin between sound wedge 2 and the housing 1 reaches third level waterproof effect.
The piezoelectric chip lead is drawn from wire hole 10, pass sealed groove 9, be installed in the pipeline inclined tube through going out wire casing 11, filled silicon rubber in sealed groove 9 again, utilize transducer screens groove 12 that piezoelectric ultrasonic transducer is fixed in the pipeline inclined tube then, prevent to rotate in the piezoelectric ultrasonic transducer installation process, damage sensor lead.
The transducer that adopts this construction packages can reach complete good waterproof effect through test under 3MPa (30KG) hydraulic pressure test.
Claims (7)
1. the waterproof construction of a piezoelectric ultrasonic transducer, comprise housing cylindraceous, described housing one end is provided with the shell cap, the described housing other end is provided with sound wedge, be provided with piezoelectric chip between described sound wedge and the described shell cap, it is characterized in that: be provided with first packoff between described housing inner face and the described sound wedge end face, be provided with second packoff between described shell inner surface and the described sound wedge periphery wall.
2. the waterproof construction of a kind of piezoelectric ultrasonic transducer according to claim 1, it is characterized in that: described housing inner face is provided with first annular groove, and described first packoff is the O RunddichtringO of inlay card in described first annular groove.
3. the waterproof construction of a kind of piezoelectric ultrasonic transducer according to claim 1 and 2, it is characterized in that: described sound wedge periphery wall is provided with wedge ring connected in star, described sound wedge ring connected in star be provided with the sound wedge screens of annular away from shell cap side, described shell inner surface is provided with and corresponding second annular groove of described sound wedge ring connected in star, the width of described second annular groove equal the wedge screens of described sound and described sound wedge ring connected in star width and, described second packoff is two O RunddichtringO and described the wedge screens of inlay card in described second annular groove.
4. the waterproof construction of a kind of piezoelectric ultrasonic transducer according to claim 3 is characterized in that: the space between described sound wedge and the described housing is provided with cementing agent.
5. the waterproof construction of a kind of piezoelectric ultrasonic transducer according to claim 1, it is characterized in that: described shell cap outer face is provided with sealed groove, described sealed groove is communicated with and is used for wire hole that the lead of described piezoelectric chip is drawn, the aperture of described wire hole is less than the aperture of described sealed groove, described shell cap outer face radially is provided with described sealed groove connects and goes out wire casing, and described shell cap surface is provided with the screens groove.
6. the waterproof construction of a kind of piezoelectric ultrasonic transducer according to claim 5 is characterized in that: fill the silicon rubber that is used to seal in the described sealed groove.
7. the waterproof construction of a kind of piezoelectric ultrasonic transducer according to claim 4, it is characterized in that: described cementing agent is an epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202220234U CN201803740U (en) | 2010-06-09 | 2010-06-09 | Waterproof structure of piezoelectric ultrasonic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202220234U CN201803740U (en) | 2010-06-09 | 2010-06-09 | Waterproof structure of piezoelectric ultrasonic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201803740U true CN201803740U (en) | 2011-04-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202220234U Expired - Fee Related CN201803740U (en) | 2010-06-09 | 2010-06-09 | Waterproof structure of piezoelectric ultrasonic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201803740U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871794A (en) * | 2010-06-09 | 2010-10-27 | 宁波大学 | Waterproof structure of piezoelectric ultrasonic transducer |
| CN106725956A (en) * | 2016-11-30 | 2017-05-31 | 桂林市啄木鸟医疗器械有限公司 | A kind of ultrasonic dental scaler transducer and containing its tooth cleaner handgrip |
| CN111557781A (en) * | 2019-02-14 | 2020-08-21 | 深圳市钛金时代科技开发有限公司 | Waterproof high temperature resistant ultrasonic emulsification handle |
| CN116106576A (en) * | 2023-04-13 | 2023-05-12 | 海底鹰深海科技股份有限公司 | Doppler underwater measuring device and manufacturing method thereof |
-
2010
- 2010-06-09 CN CN2010202220234U patent/CN201803740U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871794A (en) * | 2010-06-09 | 2010-10-27 | 宁波大学 | Waterproof structure of piezoelectric ultrasonic transducer |
| CN101871794B (en) * | 2010-06-09 | 2012-06-06 | 宁波大学 | Waterproof structure of piezoelectric ultrasonic transducer |
| CN106725956A (en) * | 2016-11-30 | 2017-05-31 | 桂林市啄木鸟医疗器械有限公司 | A kind of ultrasonic dental scaler transducer and containing its tooth cleaner handgrip |
| CN111557781A (en) * | 2019-02-14 | 2020-08-21 | 深圳市钛金时代科技开发有限公司 | Waterproof high temperature resistant ultrasonic emulsification handle |
| CN116106576A (en) * | 2023-04-13 | 2023-05-12 | 海底鹰深海科技股份有限公司 | Doppler underwater measuring device and manufacturing 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: 20110420 Termination date: 20140609 |