CN202453015U - Ultrasonic water meter transducer - Google Patents
Ultrasonic water meter transducer Download PDFInfo
- Publication number
- CN202453015U CN202453015U CN2011205507565U CN201120550756U CN202453015U CN 202453015 U CN202453015 U CN 202453015U CN 2011205507565 U CN2011205507565 U CN 2011205507565U CN 201120550756 U CN201120550756 U CN 201120550756U CN 202453015 U CN202453015 U CN 202453015U
- Authority
- CN
- China
- Prior art keywords
- housing
- piezoelectric ceramic
- ultrasonic water
- water meter
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 28
- 239000000565 sealant Substances 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims description 17
- 238000003466 welding Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- Transducers For Ultrasonic Waves (AREA)
Abstract
An ultrasonic water meter transducer belongs to the technical field of ultrasonic water meters, and comprises a casing which is provided with a closed end and an open end, a piezoelectric ceramic chip is arranged inside the casing, a pressing cap is arranged at the open end, a through hole is arranged on the press cap, a wire penetrates through the through hole and is connected with the piezoelectric ceramic chip, and a sealant layer is arranged on an end face of the pressing cap facing the outer side of the open end. The sealant layer is arranged on the pressing cap, the piezoelectric ceramic chip can be prevented from becoming damp. The piezoelectric ceramic chip does not contact with the sealant layer, echo effects cannot be brought to the piezoelectric ceramic chip, and welding spot loosing of the piezoelectric ceramic chip cannot be caused.
Description
Technical field
The utility model belongs to the Ultrasonic water meter technical field, especially relates to a kind of Ultrasonic water meter transducer.
Background technology
Ultrasonic water meter be provided be used to launch/accept hyperacoustic transducer, the main parts of transducer are exactly a piezoelectric ceramic piece.Can not make moist, more can not contact during piezoelectric ceramic piece work with water, otherwise can't operate as normal.Number of patent application: 201020131275.6 disclose a kind of calorimeter ultrasonic transducer, comprise housing and protective cover, and piezoelectric ceramic piece is arranged in the space that housing and protective cover surround, and lead links to each other with piezoelectric ceramic piece after passing protective cover.In order to prevent that piezoelectric ceramic piece from contacting with water, the method for employing is that the space that housing and protective cover surround is all filled up with fluid sealant in the patent.This sealing means; Because closely contact with fluid sealant around the piezoelectric ceramic piece, fluid sealant can produce the echo influence to piezoelectric ceramic piece, and fluid sealant is in the state that high temperature expands during encapsulating; Fluid sealant shrinks after the cooling, and the solder joint that possibly drive piezoelectric ceramic piece is loosening.
Summary of the invention
The utility model provides a kind of Ultrasonic water meter transducer to deficiency of the prior art, can eliminate the echo influence, and good operability is pressed, and can not cause the solder joint of piezoelectric ceramic piece to get loose.
In order to solve the problems of the technologies described above, the utility model is able to solve through following technical proposals: a kind of Ultrasonic water meter transducer comprises housing; Said housing has a blind end and an openend; Be provided with piezoelectric ceramic piece in the said housing, said openend is provided with friction top, and said friction top is provided with through hole; Lead links to each other with said piezoelectric ceramic piece after passing through hole, and said friction top is provided with sealant layer towards an end face in the openend outside.Friction top is provided with after the sealant layer, can guarantee that piezoelectric ceramic piece does not make moist.Piezoelectric ceramic piece does not contact with fluid sealant, can not produce echo influence to piezoelectric ceramic piece, nor can cause solder joint loosening of piezoelectric ceramic piece.
In the technique scheme, preferred, said openend is provided with two steps, and the internal diameter of step that wherein is positioned at the openend outside is greater than the internal diameter that is positioned at the inboard step of openend, and said friction top is fixed on the less said step of internal diameter.This set mode forms a zone that holds sealant layer between step sidewall and the friction top end face, make fluid sealant that abundant space arranged, and guarantees the sealing between friction top and the housing, also prevents the fluid sealant cracking that rising-heat contracting-cold causes simultaneously.
In the technique scheme, preferred, said housing is outside equipped with metal shell.Metal shell can increase the bearing resistance of the utility model.
According to last technical scheme, preferred, be provided with O-ring seal between said housing and the metal shell.O-ring seal is used to prevent the zone between liquid intrusion housing and the metal shell.
According to last technical scheme; Concrete a kind of housing and the connected mode between the shell; In the middle of the said metal shell is a through hole, and said through hole is divided into two sections, and one section diameter is greater than the diameter of the other end; Said housing is a multidiameter with two ladders; Matching of the end that said diameter of the housing is bigger with the bigger end of said through-hole diameter, the less end of said diameter of the housing matches with the less end of said through-hole diameter, and said O-ring seal is arranged on the step surface of said housing.
According to last technical scheme, preferred, the top of said housing is provided with cover plate.
According to last technical scheme, preferred, said cover plate is threaded on the said metal shell.
The beneficial effect of the utility model is: 1) piezoelectric ceramic piece does not contact with fluid sealant, can not produce echo influence to piezoelectric ceramic piece, nor can cause solder joint loosening of piezoelectric ceramic piece.2) housing is outside equipped with metal shell, has increased the bearing resistance of the utility model greatly.
Description of drawings
Fig. 1 is the cut-open view of the utility model embodiment.
Fig. 2 is the synoptic diagram of housing.
Fig. 3 is the synoptic diagram of metal shell.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
Referring to Fig. 1 to Fig. 3, a kind of Ultrasonic water meter transducer comprises housing 1, and housing 1 is a multidiameter with two ladders, has a blind end 11 and an openend 12.Be provided with piezoelectric ceramic piece 2 in the housing 1.The step surface 14 of housing 1 is provided with groove 13, and O-ring seal 7 is arranged in the groove 13.Form two steps 121,122 on the said openend 12, the internal diameter of step 121 that wherein is positioned at openend 12 outsides is greater than the internal diameter that is positioned at the inboard step 122 of openend 12, and friction top 3 is fixed on the less step 122 of internal diameter.Friction top 3 is provided with through hole 31,32, and lead 4 links to each other with piezoelectric ceramic piece 2 after passing through hole 31,32, and friction top 3 is provided with sealant layer 5 towards an end face in openend 12 outsides.Housing 1 is outside equipped with metal shell 6; In the middle of the metal shell 6 is that a through hole 61 through holes 61 are divided into two sections; One section diameter is greater than the diameter of the other end; Matching with the bigger end of through hole 61 diameters of the end that housing 1 diameter is bigger, the less end of said housing 1 diameter matches with the less end of said through hole 61 diameters.The step surface 14 of housing 1 and the step surface 62 of metal shell 6 fit.The upper area that metal shell 6 inner rings are positioned at housing 1 is provided with internal thread, and cover plate 8 is provided with external thread, and metal shell 6 is threaded with cover plate 8 and is in the same place.
Claims (7)
1. Ultrasonic water meter transducer; Comprise housing (1); Said housing (1) has a blind end (11) and an openend (12); Be provided with piezoelectric ceramic piece (2) in the said housing (1), it is characterized in that: said openend (12) is provided with friction top (3), and said friction top (3) is provided with through hole (31,32); Lead (4) links to each other with said piezoelectric ceramic piece (2) after passing through hole (31,32), and said friction top (3) is provided with sealant layer (5) towards an end face in said openend (12) outside.
2. Ultrasonic water meter transducer according to claim 1; It is characterized in that: said openend (12) is provided with two steps (121,122); The internal diameter of step (121) that wherein is positioned at openend (12) outside is greater than the internal diameter that is positioned at the inboard step (122) of openend (12), and said friction top (3) is fixed on the less said step (122) of internal diameter.
3. Ultrasonic water meter transducer according to claim 1 and 2 is characterized in that: said housing (1) is outside equipped with metal shell (6).
4. Ultrasonic water meter transducer according to claim 3 is characterized in that: be provided with O-ring seal (7) between said housing (1) and the metal shell (6).
5. Ultrasonic water meter transducer according to claim 4; It is characterized in that: in the middle of the said metal shell (6) is a through hole (61); Said through hole (61) is divided into two sections; Wherein one section diameter is greater than the diameter of the other end, and said housing (1) is a multidiameter with two ladders, the matching with the bigger end of said through hole (61) diameter of the end that said housing (1) diameter is bigger; The less end of said housing (1) diameter matches with the less end of said through hole (61) diameter, and said O-ring seal (7) is arranged on the step surface of said housing (1).
6. Ultrasonic water meter transducer according to claim 5 is characterized in that: the top of said housing (1) is provided with cover plate (8).
7. Ultrasonic water meter transducer according to claim 6 is characterized in that: said cover plate (8) is threaded on the said metal shell (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205507565U CN202453015U (en) | 2011-12-26 | 2011-12-26 | Ultrasonic water meter transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205507565U CN202453015U (en) | 2011-12-26 | 2011-12-26 | Ultrasonic water meter transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202453015U true CN202453015U (en) | 2012-09-26 |
Family
ID=46868873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205507565U Expired - Lifetime CN202453015U (en) | 2011-12-26 | 2011-12-26 | Ultrasonic water meter transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202453015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436166A (en) * | 2017-09-07 | 2017-12-05 | 上海诺仪表有限公司 | A kind of ultrasonic flowmeter transducer |
-
2011
- 2011-12-26 CN CN2011205507565U patent/CN202453015U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436166A (en) * | 2017-09-07 | 2017-12-05 | 上海诺仪表有限公司 | A kind of ultrasonic flowmeter transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170103 Address after: 315032 Zhejiang Province, Ningbo Jiangbei District North Sea Road 268 Lane 99 Patentee after: Ningbo Water Meter Co., Ltd. Patentee after: Ningbo Univ. Address before: 315032 Zhejiang Province, Ningbo Jiangbei District North Sea Road 268 Lane 99 Patentee before: Ningbo Water Meter Co., Ltd. Patentee before: Ningbo Univ. Patentee before: Ningbo Haoshida Instrument Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315032 No. 268, Lane 99, Beihai Road, Jiangbei District, Zhejiang, Ningbo Co-patentee after: Ningbo University Patentee after: Ningbo water meter (Group) Co.,Ltd. Address before: 315032 No. 268, Lane 99, Beihai Road, Jiangbei District, Zhejiang, Ningbo Co-patentee before: Ningbo University Patentee before: NINGBO WATER METER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |
|
| CX01 | Expiry of patent term |