CN1283373C - Axial water-cooled ultrasonic transducer - Google Patents
Axial water-cooled ultrasonic transducer Download PDFInfo
- Publication number
- CN1283373C CN1283373C CN 200410026138 CN200410026138A CN1283373C CN 1283373 C CN1283373 C CN 1283373C CN 200410026138 CN200410026138 CN 200410026138 CN 200410026138 A CN200410026138 A CN 200410026138A CN 1283373 C CN1283373 C CN 1283373C
- Authority
- CN
- China
- Prior art keywords
- water
- axial
- water hole
- piezoelectric ceramic
- axial water
- 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 - Fee Related
Links
Images
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The present invention relates to an axial water-cooled ultrasonic transducer. A front vibration block is arranged on the upper part of an amplitude change rod through a coupling screw bolt, and a water bore is processed in the axial direction of the coupling screw bolt; the front vibration block is provided with a back vibration block through a prestressing force screw bolt, a water bore is processed in the axial direction of the prestressing force screw bolt, and the prestressing force screw bolt is connected with an effluent water joint into a whole; a front piezoelectric ceramic slice, a middle lower piezoelectric ceramic slice, a middle upper piezoelectric ceramic slice, a back piezoelectric ceramic slice, a front electrode and a back electrode are positioned between the front vibration block and the back vibration block and arranged in an insulating ring; axial water pores communicated with the axial water pores of the coupling screw bolt and the prestressing force screw bolt are processed in the axial directions of the amplitude change rod and the front vibration block; a radial water pore communicated with the axial water pore is processed in the radial direction of the amplitude change rod, and a water supply connector communicated with the radial water pore of the amplitude change rod is arranged on the amplitude change rod; a water seal adhesive layer is arranged between the coupling screw bolt, the amplitude change rod and the front vibration block and between the prestressing force screw bolt, the front vibration block and the back vibration block. The present invention has the advantages of high stability, good heat radiation, long service life, etc., and the present invention can be popularized and used on equipment for ultrasonic processing, etc.
Description
Technical field
The invention belongs to and produce infrasonic frequency, audio frequency or superaudible mechanical vibration method or equipment technical field, be specifically related to utilize electric energy with piezo-electric effect or with electrostrictive axial water-cooled ultrasonic transducer.
Background technology
The cooling system of traditional ultrasonic transducer adopts air cooling, this cooling system, can only cool off the surface of the resonator device of ultrasonic transducer, and can not the inside that produce the higher ultrasonic transducer of temperature be cooled off, because of high-frequency dielectric loss and high-frequency mechanical vibration in-fighting, cause the ultrasonic transducer internal temperature rate of climb very fast, a few minutes just can reach Baidu (Celsius), heat can not in time be taken away, it is higher that accumulation of heat rises its temperature, cause the ultrasonic transducer frequency drift very big, serious off resonance is operate as normal for a long time, gives stress bolt high frequency mechanical strength and reduces, producing failure crack can not use, and temperature surpasses the piezoelectric ceramic piece curie point, to lose piezo-electric effect, and also can break when serious.
Summary of the invention
Technical problem underlying to be solved by this invention is to overcome the shortcoming of above-mentioned ultrasonic transducer, provide a kind of simple in structure, volume is little, in light weight, product cost is low, the axial water-cooled ultrasonic transducer of easy to use, good stability, perfect heat-dissipating, long service life.
Solving the problems of the technologies described above the technical scheme that is adopted is: the top at the luffing bar is connected with preceding vibrating mass by preceding connector, preceding vibrating mass is connected with the after vibration piece by same axial back connector, between preceding vibrating mass and after vibration piece, be disposed with preceding piezoelectric ceramic piece, middle lower piezoelectric potsherd, in go up piezoelectric ceramic piece, back piezoelectric ceramic piece, preceding piezoelectric ceramic piece, middle lower piezoelectric potsherd, in go up piezoelectric ceramic piece, be provided with dead ring between back piezoelectric ceramic piece and the back connector, between preceding piezoelectric ceramic piece and preceding vibrating mass and middle lower piezoelectric potsherd and on be provided with preceding electrode between the piezoelectric ceramic piece, between preceding piezoelectric ceramic piece and middle lower piezoelectric potsherd and on be provided with rear electrode between piezoelectric ceramic piece and the back piezoelectric ceramic piece.Connector is provided with attachment bolt water shutoff glue-line for axially processing or be manufactured with the attachment bolt in axial water hole before of the present invention between attachment bolt and luffing bar and preceding vibrating mass.The pre-stressed bolt of back connector of the present invention for axially being processed with axial water hole and joining or be connected as a single entity with water out adapter, water shutoff glue-line before between pre-stressed bolt and preceding vibrating mass, being provided with prestressing force, and be provided with water shutoff glue-line behind the prestressing force between the after vibration piece, in the processing of the axial location of luffing bar or be manufactured with the axial water hole that the axial water hole with attachment bolt links, in the radial position of luffing bar processing or be manufactured with the radially water hole that the axial water hole with the luffing bar links, radially being provided with and the radially water supply connector that links of water hole of luffing bar of luffing bar, in the axial location processing of preceding vibrating mass or be manufactured with the axial water hole that axial water hole and the axial water hole of pre-stressed bolt with attachment bolt link.
The axial water hole of the axial water hole of attachment bolt of the present invention, the axial water hole of pre-stressed bolt, luffing bar and radially the aperture in the axial water hole of axial water hole, water supply connector and the water out adapter of water hole, preceding vibrating mass be 1～30mm.The water shutoff glue-line is epoxy adhesive layer or silastic-layer or 502 glue-lines or ozone glue-line behind attachment bolt water shutoff glue-line of the present invention, the preceding water shutoff glue-line of prestressing force, the prestressing force.
Epoxy adhesive layer of the present invention is A, B epoxy adhesive layer or HY-9.4 bond layer or Dg-1 bond layer or Dg-3 bond layer or Dg-4 bond layer or Dg-7 bond layer or omnipotent glue-line.Silastic-layer of the present invention is 703 silastic-layers or 704 silastic-layers or 705 silastic-layers or 707 silastic-layers.
The aperture in the axial water hole of the axial water hole of attachment bolt of the present invention, the axial water hole of pre-stressed bolt, luffing bar and the axial water hole of axial water hole, water supply connector and the water out adapter of water hole, preceding vibrating mass radially is identical.
The axial water hole of the axial water hole of attachment bolt of the present invention, the axial water hole of pre-stressed bolt, luffing bar and radially the axial water hole of axial water hole, water supply connector and the water out adapter of water hole, preceding vibrating mass be the water hole, center.
The water shutoff glue-line is the water shutoff glue-line of same material behind attachment bolt water shutoff glue-line of the present invention, the preceding water shutoff glue-line of prestressing force, the prestressing force.
The present invention compares with air cooling piezoelectric ceramic ultrasonic transducer, adopted water cooling system, cooling water is flowed into by luffing bar place, flow through attachment bolt and preceding vibrating mass, flow out by pre-stressed bolt, the axial position of having run through ultrasonic transducer when having taken away large power supersonic transducer vibrations system works effectively, becomes the vibration heat that in-fighting produced by piezoelectric ceramics dielectric loss and high frequency canopy.Improved pre-stressed bolt high frequency mechanical strength, avoided tool heads, luffing bar front end calorie spread to transducer, prevented to have improved the job stability of ultrasonic transducer effectively because of the too high piezoelectric ceramic piece that causes of ultrasonic transducer internal temperature breaks.That the present invention has is reasonable in design, simple in structure, volume is little, in light weight, advantage such as product cost is low, good stability, easy to use, perfect heat-dissipating, long service life, can promote the use of on equipment such as ultrasonic treatment facility, nanometer Ultrasonic Pulverization, Ultrasonic machining, the extraction of ultrasonic food, ultrasonic traditional Chinese medicine extraction, ultrasonic sewage disposal.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
The specific embodiment
The present invention is described in more detail below in conjunction with drawings and Examples, but the invention is not restricted to these embodiment.
Embodiment 1
In Fig. 1, the axial water-cooled ultrasonic transducer of present embodiment be by water out adapter 1, pre-stressed bolt 2, after vibration piece 3, dead ring 4, back piezoelectric ceramic piece 5, in go up behind water shutoff glue-line 15 before piezoelectric ceramic piece 6, middle lower piezoelectric potsherd 7, preceding piezoelectric ceramic piece 8, preceding vibrating mass 9, attachment bolt 10, attachment bolt water shutoff glue-line 11, luffing bar 12, water supply connector 13, ring flange 14, the prestressing force, preceding electrode 16, rear electrode 17, the prestressing force water shutoff glue-line 18 and connect and constitute.
Be processed with ring flange 14 in the bottom of luffing bar 12, be processed with screw and water hole, center in the central upper portion position of luffing bar 12, the diameter in water hole, center is 20mm, the diameter of screw is greater than the diameter in water hole, center, be processed with radially inlet opening and concentric radially screw in the radial position of the top of luffing bar 12, radially the diameter of inlet opening is 20mm, radially the water hole, center of inlet opening and axial location links, in the radially screw of luffing bar 12, water supply connector 13 is installed by thread connection, water supply connector 13 will link by pipeline and water pipe, and the diameter in the water hole, center of water supply connector 13 is 20mm.In the screw of luffing bar 12 central upper portion positions, connect, be packaged with attachment bolt water shutoff glue-line 11 between the bottom of attachment bolt 10 and luffing bar 12 tops by the bottom of screw thread with attachment bolt 10.Be processed with screw and water hole, center down in the center of preceding vibrating mass 9, the diameter in water hole, center is 20mm, the diameter of following screw is greater than the diameter in water hole, center, the top of attachment bolt 10 connects with the bottom of preceding vibrating mass 9 by the screw thread in the screw under the center of preceding vibrating mass 9, be packaged with attachment bolt water shutoff glue-line 11 between the bottom of the top of attachment bolt 10 and preceding vibrating mass 9,11 waterproof actions of attachment bolt water shutoff glue-line, anti-sealing enters the conjunction plane of luffing bar 12 and preceding vibrating mass 9, causes the conjunction plane oxide etch of luffing bar 12 and preceding vibrating mass 9.Be processed with screw and water hole, center in the central upper portion position of preceding vibrating mass 9, the diameter in water hole, center is 20mm, the diameter of last screw is greater than the diameter in water hole, center, on preceding vibrating mass 9 central upper portion positions, by thread connection pre-stressed bolt 2 is installed in the screw, the center of pre-stressed bolt 2 is processed with the water hole, center, the diameter in water hole, center is 20mm, the outer surface of pre-stressed bolt 2 is processed with external screw thread, is packaged with the preceding water shutoff glue-line 15 of prestressing force between pre-stressed bolt 2 and preceding vibrating mass 9 tops.Before the middle part of pre-stressed bolt 2 is equipped with successively piezoelectric ceramic piece 8, middle lower piezoelectric potsherd 7, on piezoelectric ceramic piece 6, back piezoelectric ceramic piece 5, before piezoelectric ceramic piece 8, middle lower piezoelectric potsherd 7, in go up between piezoelectric ceramic piece 6, back piezoelectric ceramic piece 5 and the pre-stressed bolt 2 dead ring 4 be installed, piezoelectric ceramic pieces 8 before dead ring 4 makes, middle lower piezoelectric potsherd 7, in go up between piezoelectric ceramic piece 6, back piezoelectric ceramic piece 5 and the pre-stressed bolt 2 and insulate.Between preceding piezoelectric ceramic piece 8 and preceding vibrating mass 9 and middle lower piezoelectric potsherd 7 and on be equipped with between the piezoelectric ceramic piece 6 before electrode 16, between preceding piezoelectric ceramic piece 8 and middle lower piezoelectric potsherd 7 and on piezoelectric ceramic piece 6 and back rear electrode 17 is installed between the piezoelectric ceramic piece 5, preceding electrode 16 is connected with power line by lead with rear electrode 17.The center of after vibration piece 3 is processed with screw, after vibration piece 3 is installed in the top of pre-stressed bolt 2 by the thread connection in its center screw, be packaged with water shutoff glue-line 18 behind the prestressing force between the top of after vibration piece 3 and pre-stressed bolt 2, before the prestressing force behind water shutoff glue-line 15 and the prestressing force water shutoff glue-line 18 be used for preventing cooling water flow into preceding piezoelectric ceramic piece 8, lower piezoelectric potsherd 7, in go up piezoelectric ceramic piece 6, back piezoelectric ceramic piece 5, preceding electrode 16, rear electrode 17 places, cause the high frequency voltage short circuit.At the upper end of pre-stressed bolt 2 and pre-stressed bolt 2 water out adapter 1 that has been connected as a single entity, the aperture in the water hole, center of water out adapter 1 is 20mm, and water out adapter 1 will link with pipeline.A, the B epoxy glue of water shutoff glue-line 18 for selling on the market behind water shutoff glue-line 15 and the prestressing force also can adopt HY-9.4 bond layer or Dg-1 bond layer or Dg-3 bond layer or Dg-4 bond layer or Dg-7 bond layer or omnipotent glue-line before the attachment bolt water shutoff glue-line 11 of present embodiment and the prestressing force.Also can adopt 502 glue-lines or ozone glue-line.
In the present embodiment, the water hole, center of luffing bar 12 and radially the aperture in the water hole, center of water hole, center, water supply connector 13 and the water out adapter 1 of water hole, center, the pre-stressed bolt 2 of water hole, center, the preceding vibrating mass 9 of water hole, attachment bolt 10 be 1mm.Other is parts and the connecting relation of parts is identical with embodiment 1 in addition in addition.
Embodiment 3
In the present embodiment, the water hole, center of luffing bar 12 and radially the aperture in water hole, center, water supply connector 13 and the water hole, water out adapter 1 center of water hole, center, the pre-stressed bolt 2 of water hole, center, the preceding vibrating mass 9 of water hole, attachment bolt 10 be 30mm.Other is parts and the connecting relation of parts is identical with embodiment 1 in addition in addition.
In the present embodiment, 705 silicon rubber of water shutoff glue-line 18 for selling on the market behind water shutoff glue-line 15 and the prestressing force also can adopt 703 silastic-layers or 704 silastic-layers or 705 silastic-layers or 707 silastic-layers before the attachment bolt water shutoff glue-line 11 of present embodiment and the prestressing force.
In order to verify beneficial effect of the present invention, the inventor adopts the embodiment of the invention 1 prepared axial water-cooled ultrasonic transducer and air cooling piezoelectric ceramic ultrasonic transducer to carry out contrast test with the air cooling NTK ultrasonic transducer that Japan produces, and test situation is as follows:
1, tester
ACQ-600 ultrasonic generator, power meter (EMB10K250-1551), stainless steel trough, ultrasonic transducer, luffing bar, tool heads, glass bar mercurial thermometer (0～200 ℃).
2, tested instrument
(1) axial water-cooled ultrasonic transducer;
(2) air cooling piezoelectric ceramic ultrasonic transducer;
(3) the air cooling NTK ultrasonic transducer of Japan's production.
3, test method
The power meter string is inserted between ACQ-600 ultrasonic generator and the present invention, measure the effective power of the present invention's input, the present invention and luffing bar Bolt Connection, luffing bar and tool heads Bolt Connection, tool heads is a prismatic member, radiation in water, the glass bar mercurial thermometer is measured the temperature of after vibration piece of the present invention.The test method of air cooling piezoelectric ceramic ultrasonic transducer, air cooling NTK ultrasonic transducer is with method of testing of the present invention.
4, result of the test
When input power was 200W, the temperature of test period 5 minutes, air cooling piezoelectric ceramic ultrasonic transducer was 90 ℃, and the temperature of test period 10 minutes, air cooling piezoelectric ceramic ultrasonic transducer is 120 ℃, breaks and scraps.
When input power was 400W, the temperature of test period 5 minutes, air cooling NTK ultrasonic transducer was 100 ℃, and the temperature of test period 10 minutes, air cooling NTK ultrasonic transducer is 150 ℃, breaks and scraps.
When input power is 450W, test period 5 minutes, temperature of the present invention are 30 ℃, test period 10 minutes, temperature of the present invention are 40 ℃, test period 30 minutes, temperature of the present invention are 50 ℃, test period 2 hours, temperature of the present invention are 50 ℃, and test period 6 hours, temperature of the present invention are 50 ℃.
Claims (7)
1, a kind of axial water-cooled ultrasonic transducer, top at luffing bar [12] is connected with preceding vibrating mass [9] by preceding connector, preceding vibrating mass [9] is connected with after vibration piece [3] by same axial back connector, between preceding vibrating mass [9] and after vibration piece [3], be disposed with preceding piezoelectric ceramic piece [8], middle lower piezoelectric potsherd [7], in go up piezoelectric ceramic piece [6], back piezoelectric ceramic piece [5], preceding piezoelectric ceramic piece [8], middle lower piezoelectric potsherd [7], in go up piezoelectric ceramic piece [6], be provided with dead ring [4] between back piezoelectric ceramic piece [5] and the back connector, between preceding piezoelectric ceramic piece [8] and preceding vibrating mass [9] and middle lower piezoelectric potsherd [7] and in go up between the piezoelectric ceramic piece [6] and be provided with preceding electrode [16], between preceding piezoelectric ceramic piece [8] and middle lower piezoelectric potsherd [7] and in go up piezoelectric ceramic piece [6] and afterwards be provided with rear electrode [17] between the piezoelectric ceramic piece [5], it is characterized in that: connector is provided with attachment bolt water shutoff glue-line [11] for axially processing or be manufactured with the attachment bolt [10] in axial water hole before said between attachment bolt [10] and luffing bar [12] and preceding vibrating mass [9]; The pre-stressed bolt [2] of said back connector for axially being processed with axial water hole and being connected as a single entity with water out adapter [1], between pre-stressed bolt [2] and preceding vibrating mass [9], be provided with in advance should be just before water shutoff glue-line [15], and be provided with water shutoff glue-line [18] behind the prestressing force between the after vibration piece [3], in the processing of the axial location of luffing bar [12] or be manufactured with and axial water hole that the axial water hole of attachment bolt [10] links, in the radial position of luffing bar [12] processing or be manufactured with the radially water hole that the axial water hole with luffing bar [12] links, radially being provided with and the axially water supply connector [13] that links of water hole of luffing bar [12] of luffing bar [12], in the axial location processing of preceding vibrating mass [9] or be manufactured with the axial water hole that axial water hole and the axial water hole of pre-stressed bolt [2] with attachment bolt [10] link.
2, according to the described axial water-cooled ultrasonic transducer of claim 1, it is characterized in that: the axial water hole of the axial water hole of said attachment bolt [10], pre-stressed bolt [2], the axial water hole of luffing bar [12] and radially the aperture in the axial water hole of axial water hole, water supply connector [13] and the water out adapter [1] of water hole, preceding vibrating mass [9] be 1～30mm; Water shutoff glue-line [18] is epoxy adhesive layer or silastic-layer or 502 glue-lines or ozone glue-line behind said attachment bolt water shutoff glue-line [11], the preceding water shutoff glue-line [15] of prestressing force, the prestressing force.
3, according to the described axial water-cooled ultrasonic transducer of claim 2, it is characterized in that: said epoxy adhesive layer is A, B epoxy adhesive layer or HY-9.4 bond layer or Dg-1 bond layer or Dg-3 bond layer or Dg-4 bond layer or Dg-7 bond layer or omnipotent glue-line: said silastic-layer is 703 silastic-layers or 704 silastic-layers or 705 silastic-layers or 707 silastic-layers.
4, according to claim 1 or 2 described axial water-cooled ultrasonic transducers, it is characterized in that: the aperture in the axial water hole of the axial water hole of said attachment bolt [10], pre-stressed bolt [2], the axial water hole of luffing bar [12] and the axial water hole of axial water hole, water supply connector [13] and the water out adapter [1] of water hole, preceding vibrating mass [9] radially is identical.
5, according to claim 1 or 2 described axial water-cooled ultrasonic transducers, it is characterized in that: the axial water hole of the axial water hole of said attachment bolt [10], pre-stressed bolt [2], the axial water hole of luffing bar [12] and radially the axial water hole of axial water hole, water supply connector [13] and the water out adapter [1] of water hole, preceding vibrating mass [9] be the water hole, center.
6, according to the described axial water-cooled ultrasonic transducer of claim 4, it is characterized in that: the axial water hole of the axial water hole of said attachment bolt [10], pre-stressed bolt [2], the axial water hole of luffing bar [12] and radially the axial water hole of axial water hole, water supply connector [13] and the water out adapter [1] of water hole, preceding vibrating mass [9] be the water hole, center.
7, according to claim 1 or 2 described axial water-cooled ultrasonic transducers, it is characterized in that: water shutoff glue-line [18] is the water shutoff glue-line of same material behind said attachment bolt water shutoff glue-line [11], the preceding water shutoff glue-line [15] of prestressing force, the prestressing force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410026138 CN1283373C (en) | 2004-05-18 | 2004-05-18 | Axial water-cooled ultrasonic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410026138 CN1283373C (en) | 2004-05-18 | 2004-05-18 | Axial water-cooled ultrasonic transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1579647A CN1579647A (en) | 2005-02-16 |
| CN1283373C true CN1283373C (en) | 2006-11-08 |
Family
ID=34581995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410026138 Expired - Fee Related CN1283373C (en) | 2004-05-18 | 2004-05-18 | Axial water-cooled ultrasonic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1283373C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111098B (en) * | 2007-08-31 | 2011-09-21 | 陕西师范大学 | Sandwich type radial direction vibrating piezoelectric ceramic ultrasonic transducer |
| CN104148270A (en) * | 2014-08-05 | 2014-11-19 | 曹学良 | Energy converter connecting mode suitable for anti-explosion environment |
| CN109719575B (en) * | 2019-01-09 | 2024-03-12 | 杭州成功超声设备有限公司 | Non-metallic ultrasonic tool head for improving fatigue resistance by applying prestress |
| CN110479687B (en) * | 2019-08-01 | 2022-04-15 | 合肥国轩高科动力能源有限公司 | Ultrasonic cleaning device for power battery aluminum shell |
-
2004
- 2004-05-18 CN CN 200410026138 patent/CN1283373C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1579647A (en) | 2005-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103041977A (en) | Watertight packaging type ultrasonic cleaning transducer | |
| WO2018145340A1 (en) | Shear vibration-based piezoelectric composite material and preparation method therefor | |
| CN109668672A (en) | Ultrasonic bolt pre-tightens force measuring method | |
| CN101121165A (en) | Piezoelectric ultrasonic transducer | |
| CN1283373C (en) | Axial water-cooled ultrasonic transducer | |
| CN101998201B (en) | Folding cover plate broadband underwater transducer | |
| CN107036919B (en) | Experimental device and experimental method for breaking rock by utilizing ultrasonic excitation | |
| CN109186875B (en) | Sealing detection system of intercooling front air pipe and use method thereof | |
| WO2005029912A1 (en) | Ultrasonic vibrator and ultrasonic flowmeter using the same | |
| CN202290654U (en) | Mega sonic cleaning head and mega sonic cleaning system comprising same | |
| CN110518534B (en) | Composite insulator vibration deicing device and deicing method | |
| CN2624208Y (en) | Special-purpose probe for pipeline ultrasonic guided wave detecting and fixing apparatus therefor | |
| CN102513285A (en) | Ultrasonic transducer | |
| CN2791437Y (en) | Supersonic antiscale viscosity-reducing device | |
| CN209148820U (en) | A kind of built-in coupling sensor of GIS partial discharge detection of easy installation | |
| CN201460882U (en) | High-reliability high-stability acoustic wave logging low-frequency transmission energy converter | |
| CN213612445U (en) | Ultrasonic transducer with whole-body prestress structure | |
| CN201227294Y (en) | Medical ultrasonic transducing device | |
| WO2022241855A1 (en) | Ultrasonic probe for on-line measurement of axial force of high-temperature bolt | |
| CN103230866A (en) | Ultrasonic transducer and manufacturing process thereof | |
| CN214537028U (en) | Novel gate deicing simulation device based on ultrasonic waves | |
| KR100671419B1 (en) | Acoustic Impedance Matching Layer for High Frequency Ultrasonic Transducer and Method for Fabricating Ultrasonic Transducer by using it | |
| CN106286550A (en) | A kind of intelligent nut device for monitoring bolt connection state | |
| CN214471088U (en) | Ultrasonic flowmeter oscillator and ultrasonic flowmeter | |
| CN101000050A (en) | Halfsphere-shaped sucking type piezoelectric ultrasonic pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |