CN207487745U - Gas Jie's ultrasonic flow transducer - Google Patents
Gas Jie's ultrasonic flow transducer Download PDFInfo
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- CN207487745U CN207487745U CN201721351541.4U CN201721351541U CN207487745U CN 207487745 U CN207487745 U CN 207487745U CN 201721351541 U CN201721351541 U CN 201721351541U CN 207487745 U CN207487745 U CN 207487745U
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Abstract
The utility model discloses a kind of gas Jie ultrasonic flow transducers, are related to a kind of structure of ultrasonic flow transducer.It includes roundlet cavity, great circle cavity, housing, back sheet, absorbent treatment and matching layer, the epoxy resin layer being connect with the back sheet is equipped in great circle cavity, with the buckle being set on the great circle cavity inner wall at multiple intervals, the cavity that Open Side Down there are one being set in the absorbent treatment, the first glue-line being equipped in cavity at the cavity mouth of the cavity, and the piezoelectric ceramics between the upper top surface of cavity and the first glue-line, piezoelectric ceramics is connect by the first glue-line with matching layer upper end, matching layer lower end is connected by the roundlet cavity bottom of the second glue-line and housing, connecting line one end of piezoelectric ceramics is connect with piezoelectric ceramics, the other end sequentially passes through absorbent treatment, back sheet and epoxy resin layer, and positioned at the great circle inside cavity of housing.The utility model good airproof performance, anti-corrosive properties are good, pressure-resistance structure intensity is big, high sensitivity.
Description
Technical field
The utility model is related to a kind of structure of ultrasonic flow transducer, specifically a kind of gas Jie ultrasonic flow rate sensing
Device.
Background technology
Energy measurement is the scientific management energy, and realization is energy-saving, and the important means increased economic efficiency, gas meter, flow meter is energy
The important component of source measuring instrument all uses huge flowmeter occupying domestic gas and industrial gas, they are the energy
Management and the indispensable tool of business accounting.Under the promotion of national policy and household metering and by ladder gas price fee system
Carry out in an all-round way, the gas meter, flow meter validity period using natural gas as medium is generally 10 years, using manufactured gas, manufactured fuel gas, liquefied petroleum gas as medium
Gas meter, flow meter validity period must not exceed 6 years, the continuous renewal of gas meter, flow meter, which is regenerated, pushes industry health, fast-developing.Ultrasonic wave
The exploitation of gas meter will be trend of the times with application, and growth momentum is swift and violent, also the flow sensor product mating for ultrasonic wave gas meter
Research and development, production provide vast potential for future development.
Utility model content
The purpose of this utility model is to overcome the shortcoming of background technology, and a kind of gas Jie ultrasonic flow rate is provided and is passed
Sensor.
To achieve these goals, the technical solution of the utility model is：Gas Jie's ultrasonic flow transducer, including by roundlet
The housing that cavity and great circle cavity are formed, it is characterised in that：It is equipped with backing in the roundlet cavity of the housing successively from top to bottom
Layer, absorbent treatment and matching layer, the great circle cavity of the housing are interior equipped with the epoxy resin layer being connect with the back sheet and multiple
Interval be set on the great circle cavity inner wall on buckle, back sheet by the multiple snap lock in housing, the suction
It is set in sound layer there are one the cavity that Open Side Down, cavity is interior to be equipped with the first glue-line and the position being located at the cavity mouth of the cavity
Piezoelectric ceramics between the upper top surface of cavity and the first glue-line, piezoelectric ceramics are connect by the first glue-line with matching layer upper end,
Matching layer lower end is connected by the roundlet cavity bottom of the second glue-line and housing, connecting line one end of piezoelectric ceramics and piezoelectric ceramics
Connection, the other end sequentially pass through absorbent treatment, back sheet and epoxy resin layer, and positioned at the great circle inside cavity of housing.
Compared with prior art, the beneficial effects of the utility model are as follows：
1st, the utility model is safe and reliable, pressure-resistant, anti-corrosion is moisture-proof, high sensitivity, and housing uses the resinous wood of anticorrosive anti-wear
Expect that hot spear is integrally formed, sheathing material surface-active is poor, and hardly possible bonding uses preceding carry out pretreating process.
2nd, the ultrasonic impedances matching layer of the utility model is set to the forward direction of the piezo ceramic element of ultrasonic flow transducer
Acoustic radiation face, matching layer are the matching materials of low acoustic impedance.
3rd, the absorbent treatment of the utility model wraps entire piezo ceramic element and matching layer for an elastomeric objects.
4th, the backing of the utility model is by having 2 or more snap locks in shell on the cavity inner round wall of shell upper surface
In vivo, absorbent treatment is fixed on by backing in cavity.
5th, two pads of the piezo ceramic element of the utility model are directly embedded in absorbent treatment, piezo ceramic element connection
Line is drawn across absorbent treatment by backing centre bore, and for backing by snap lock in housing, the connecting line of extraction passes through sealing
Glue is sealed in housing.
6th, the utility model good airproof performance, anti-corrosive properties are good, pressure-resistance structure intensity is big, high sensitivity.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
1- matching layers in figure, the second glue-lines of 2-, the first glue-lines of 3-, 4- piezoelectric ceramics, 5- absorbent treatments, 51- cavitys, 6- backings
Layer, 7- housings, 71- roundlet cavitys, 72- great circle cavitys, 8- buckles, 9- epoxy resin layers, 10- connecting lines.
Specific embodiment
The performance of the utility model is described in detail below in conjunction with the accompanying drawings, but they are not formed to the utility model
It limits, it is only for example.The advantages of making the utility model by explanation simultaneously, is more clear and is readily appreciated that.
It is understood refering to attached drawing：Gas Jie's ultrasonic flow transducer, including the shell being made of roundlet cavity 71 and great circle cavity 72
Body 7, it is characterised in that：It is equipped with back sheet 6, absorbent treatment 5 and matching layer in the roundlet cavity 71 of the housing 7 successively from top to bottom
1, being set on for the epoxy resin layer 9 being connect with the back sheet 6 and multiple intervals is equipped in the great circle cavity 72 of the housing 7
Buckle 8 on 72 inner wall of great circle cavity, back sheet 6 are locked at by the multiple buckle 8 in housing 7, the absorbent treatment 5
It inside sets there are one the cavity 51 that Open Side Down, cavity 51 is interior to be equipped with 3 and of the first glue-line being located at the cavity mouth of the cavity 51
Piezoelectric ceramics 4 between the upper top surface of cavity 51 and the first glue-line 3, piezoelectric ceramics 4 pass through the first glue-line 3 and matching layer 1
Upper end connects, and 1 lower end of matching layer is connect by the second glue-line 2 with 71 bottom of roundlet cavity of housing 7, the connection of piezoelectric ceramics 4
10 one end of line is connect with piezoelectric ceramics 4, and the other end sequentially passes through absorbent treatment 5, back sheet 6 and epoxy resin layer 9, and positioned at housing
Inside 7 great circle cavity 72.
In actual work, gas Jie ultrasonic flow transducer is the aerial propagation of ultrasonic wave, utilizes the sound of different medium
Impedance and the difference of air acoustic impedance, can generate catadioptric characteristic, for the various applications such as ranging, level, liquid level.
Matching layer is the core material for manufacturing gas Jie's ultrasonic flow transducer, and matching layer can promote transducer energy conversion
Efficiency reduces heat production efficiency in piezoelectric ceramic piece, reduces the radiating treatment requirement of ultrasonic flow transducer, can preferably ensure
Ultrasonic flow transducer stablizes use and service life, enhances safety in utilization.According to predetermined ratio formulating polymer and gold
Belong to oxide particle, be uniformly mixed and add in colloid, generate polymerization curing reaction and produce the matching layer for needing thickness, matching layer
Thickness basic 1/4 is Wavelength matched.
During the utility model is realized, utility model people has found existing gas Jie ultrasonic flow transducer, and there are following several
The problem of aspect：First aspect：There is sensor degradation more than 0.3Mpa pressure or output waveform is unstable；Second aspect：
Matching layer is directly exposed outside with physical contact between media, and the protection of matching layer non-housing, which is easily corroded, to be invaded with moisture and lead to piezoelectricity
The change of element electrical property, poor sealing；The third aspect：Easily occur in -30 DEG C~80 DEG C high/low temperatures recycle signal attenuation and
Output waveform is unstable；Fourth aspect：Absorbent treatment use common silicone filler, to clutter, interfere wave assimilation effect it is bad and
Signal strength is low.
The manufacturing method of the utility model includes the following steps：
Step 1：Shell is integrally formed using anticorrosive anti-wear Kynoar or acetal resin material, and matching layer is set to
In housing, pressure resistance, anti-corrosion, moisture-proof, safety and the service life of product are effectively improved；
Step 2：To shell bonding plane using grinding process, the rough surface with keying action is formed, it is embedding to increase machinery
With joint efforts, it forms matching level by bonded adhesives to connect with the lockmaking of shell bonding plane, it is strong to greatly improve bonding using above-mentioned technique
Degree, avoids occurring coming unglued in use, come off, and ensures that the reliable of product, output waveform are stablized；
Step 3：The molding of matching layer and thickness requirement:According to predetermined ratio (weight ratio) modulation polymer and oxide
Grain carries out forming thick semi liquid state colloid, then add in polymerization catalyst in semi liquid state colloid after uniformly mixing, generates polymerization
Curing reaction limits matching layer thickness by mold, and matching layer thickness determines sensor acoustic-electric transfer efficiency, so as to influence to export
Signal strength.When matching layer thickness corresponds to the quarter-wave of its material, ultrasonic impedances matching layer most effective can be cut down
Reflected energy in matching layer Yu transonic coal quality interface is lost, and improves energy transmission efficiency；
Step 4：Absorbent treatment is a resilient cylindrical object, is directly connect with piezo ceramic element upper surface；
Step 5：Matching layer, piezo ceramic element, absorbent treatment sequentially connect to form sensor unit；
Step 6：Sensor unit (matching layer lower face) is put into directly Nian Jie with bottom in the cavity of shell, and backing is located at
On absorbent treatment end face, lead-out wire is pierced by from backing centre bore；
Step 7：Backing is by there is 2 or more snap locks to be poured into housing, then in backboard upper end on inner round wall
Fluid sealant.
In actual work, as shown in Figure 1, the shell of the utility model is spear material integral structure.Be equipped in shell matching layer,
Piezo ceramic element, sound-absorbing material, backing and connecting line.Piezo ceramic element is connect by glue-line with matching layer, and matching layer leads to
Glue-line to be crossed to connect with outer casing bottom, matching layer is set to the forward acoustic radiating surface of the piezo ceramic element of ultrasonic flow transducer,
Absorbent treatment wraps entire piezo ceramic element, has backing above absorbent treatment, backing passes through on shell great circle cavity inner round wall
There are 2 or more symmetrical buckles that backing is locked in housing.Piezo ceramic element connecting line is drawn by backing centre bore
Go out, by snap lock in housing, the connecting line of extraction is sealed in by fluid sealant in housing backing.Using special bonding
The stabilization of technology ensuring ultrasonic flow transducer, reliable, service life is long；Absorbent treatment plays ultrasonic flow transducer in cold and hot punching
Hit, the release of the lower internal stress of external pressure effect improves the reliability of ultrasonic flow transducer, while absorb interference wave,
The noise signals such as back wave；Ensure the high reliability of product using the design structure that 2 or more buckles lock backing, carry
High efficiency of assembling.
Other unaccounted parts belong to the prior art.
Claims (1)
1. gas Jie's ultrasonic flow transducer, including the housing (7) being made of roundlet cavity (71) and great circle cavity (72), feature
It is：It is equipped with back sheet (6), absorbent treatment (5) and matching layer in the roundlet cavity (71) of the housing (7) successively from top to bottom
(1), the great circle cavity (72) of the housing (7) is interior equipped with the epoxy resin layer (9) being connect with the back sheet (6) and multiple
The buckle (8) being set on great circle cavity (72) inner wall at interval, back sheet (6) are locked at by the multiple buckle (8)
In housing (7), set in the absorbent treatment (5) there are one the cavity (51) that Open Side Down, interior be equipped with of cavity (51) is located at the sky
The first glue-line (3) at the cavity mouth of chamber (51) and the piezoelectricity pottery between the upper top surface of cavity (51) and the first glue-line (3)
Porcelain (4), piezoelectric ceramics (4) are connect by the first glue-line (3) with matching layer (1) upper end, and matching layer (1) lower end passes through the second glue-line
(2) it is connect with the roundlet cavity of housing (7) (71) bottom, connecting line (10) one end and the piezoelectric ceramics (4) of piezoelectric ceramics (4) connect
It connects, the other end sequentially passes through absorbent treatment (5), back sheet (6) and epoxy resin layer (9), and positioned at the great circle cavity of housing (7)
(72) it is internal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721351541.4U CN207487745U (en) | 2017-10-19 | 2017-10-19 | Gas Jie's ultrasonic flow transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721351541.4U CN207487745U (en) | 2017-10-19 | 2017-10-19 | Gas Jie's ultrasonic flow transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207487745U true CN207487745U (en) | 2018-06-12 |
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ID=62480816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721351541.4U Active CN207487745U (en) | 2017-10-19 | 2017-10-19 | Gas Jie's ultrasonic flow transducer |
Country Status (1)
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| CN (1) | CN207487745U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109225788A (en) * | 2018-07-06 | 2019-01-18 | 陕西师范大学 | Biphonon crystal composite structure high efficiency and broad band air-media ultrasonic energy converter |
| CN110465473A (en) * | 2019-09-16 | 2019-11-19 | 西安安森智能仪器股份有限公司 | A kind of ultrasonic transducer of high pressure resistant structure |
-
2017
- 2017-10-19 CN CN201721351541.4U patent/CN207487745U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109225788A (en) * | 2018-07-06 | 2019-01-18 | 陕西师范大学 | Biphonon crystal composite structure high efficiency and broad band air-media ultrasonic energy converter |
| CN109225788B (en) * | 2018-07-06 | 2021-02-19 | 陕西师范大学 | High-efficiency broadband air-medium ultrasonic transducer with double-phonon crystal composite structure |
| CN110465473A (en) * | 2019-09-16 | 2019-11-19 | 西安安森智能仪器股份有限公司 | A kind of ultrasonic transducer of high pressure resistant structure |
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