CN2092757U - Ultrasonic transducer with magnetic fixture - Google Patents
Ultrasonic transducer with magnetic fixture Download PDFInfo
- Publication number
- CN2092757U CN2092757U CN 91209034 CN91209034U CN2092757U CN 2092757 U CN2092757 U CN 2092757U CN 91209034 CN91209034 CN 91209034 CN 91209034 U CN91209034 U CN 91209034U CN 2092757 U CN2092757 U CN 2092757U
- Authority
- CN
- China
- Prior art keywords
- supporting sleeve
- shell
- ultrasonic transducer
- coil
- damping block
- 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.)
- Withdrawn
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model relates to an ultrasonic transducer with magnetic fixture, which is used for detecting the force bearing performance or the sensor of non-destructive inspection. Two semi-circular magnet are arranged between a cylinder-shaped outer shell and a supporting sleeve; an acoustic permeability protective layer (2), a damping block, and a piezo-electric chip are arranged in the supporting sleeve; the damping block is connected with a coil; the ends of the coil are connected with a leading wire and are outwards leaded out of the outer shell through a protective sleeve hole; the stress state of the detected piece can be accurately measured through the traveling time of the ultrasonic wave in the detected piece.
Description
The utility model relates to a kind of magnetic force mounting ultrasonic transducer, is a kind of sensor in Non-Destructive Testing and the Experimental Mechanics field, belongs to the technical field of pick-up unit.
Using ultrasound wave back power measured sensor in Non-Destructive Testing and Experimental Mechanics generally to adopt the hand-held probe at present, (ultrasonic transducer) makes the surface of probe contact test specimen, it compresses with handgrip again, the shortcoming of this metering system is probe and test specimen possibility out of plumb, it is greatly sometimes little when perhaps the power that probe is applied has, make the result of measurement have bigger error, therefore demand urgently further improving to be tending towards perfect.
The purpose of this utility model is that a kind of magnetic force mounting ultrasonic transducer that ferrous material is used of measuring will be provided, and it can overcome above-mentioned deficiency.
The purpose of this utility model is to realize like this, the characteristic that it utilizes magnet and iron charge to inhale mutually, utilize piezoelectric chip to produce ultrasonic, can know the stress state of test specimen by the mensuration travel-time of ultrasound wave in test specimen, this transducer is that supporting sleeve is housed in aluminium shell, two and half garden shape magnet are housed between shell and the supporting sleeve, the irony packing ring is arranged between magnet and the shell, the damping block that is connected with coil is housed in supporting sleeve, the transducer core that piezoelectric chip and entrant sound protective seam are formed, can be used for transponder pulse and receive ultrasound wave, damping block top connects a coil, and it draws enclosure by lead-in wire; Constitute a closed magnetic circuit between magnet and packing ring, the test specimen, make the constant coupling power of maintenance between protective seam and the test specimen.
Accompanying drawing 1, structure of ultrasonic transducer synoptic diagram
The A-A cut-open view of Fig. 2, ultrasonic transducer
Now in conjunction with the accompanying drawings structure of ultrasonic transducer is described in detail.
By Fig. 1; the shell of aluminum (9) is that annular groove (12) is arranged at its top of a Cylinder; this groove can be clutched with finger; shell (9) can be separated with magnet with supporting sleeve (5); the lead wire sheath of packing in the center pit of shell (9) and supporting sleeve (5) (11); the inner chamber of shell (9) is except that center pit; also has stepped bore (13); pack in this hole (13) supporting sleeve (5) of the hollow Cylinder of step; the bottom of the endoporus of supporting sleeve (5) is equipped with damping block (3) piezoelectric chip (1) and entrant sound protective seam (2) successively; damping block (3) top connects a coil (4); the two ends of coil (4) are connected in lead-in wire (10) again; this lead-in wire (10) passes lead wire sheath (11) and guides into outside the sheath; magnet (6) and (7) of two and half garden shapes are housed between the stepped bore (13) of supporting sleeve (5) and shell (9); iron washer (8) is equipped with on magnet (6) (7) top; the upper and lower end face of packing ring (8) just in time matches with the inner face and the magnet piece (6) (7) in the hole of shell (9); half garden shape magnet (6) (7) is made into mutually between the opposite face of garden annular and leaves certain clearance (14) (Fig. 2); so that increase the magnetic resistance of garden Zhou Fangxiang; packing ring (8) is contained between shell (9) and supporting sleeve (5) and the magnet (6) (7); can reduce the magnetic resistance between the half garden shape magnet (6) (7); half garden shape magnet (6) (7); packing ring (8) and iron class test specimen have constituted closed magnetic circuit; its effect is to make the constant coupling power of maintenance between entrant sound protective seam (2) and the test specimen; thereby make coupled layer thickness identical; this has guaranteed the repeatability of optimum measurement; piezoelectric chip (1) is the vertical of various frequencies; the shear wave piezoelectric chip; it and entrant sound protective seam (2) damping block (3) coil (4) supporting sleeve (5); lead-in wire (10) lead wire sheath (11) has constituted common ultrasonic transducer core, is used for transponder pulse and receive ultrasound wave.
Accompanying drawing 2 is A-A cut-open views of ultrasonic transducer, half garden shape magnet (6) (7) is contained between garden cylindrical outer cover (9) and the supporting sleeve (5), when two magnet (6) (7) piece together the garden annular, a gap (14) is arranged between its opposite face, wherein filling is with epoxy resin, this gap can increase the magnetic resistance of garden Zhou Fangxiang, and garden shape damping block (3) just is contained in the endoporus of supporting sleeve (5).
Adhering with epoxy resin is mostly adopted in the above-mentioned connection of part in addition.
Compared with prior art, ultrasonic transducer with magnetic fixture has following advantage:
1, volume is little, and is simple in structure, easy and simple to handle, the certainty of measurement height.
2, between the opposite face of two and half garden shape magnet certain interval is arranged, filling therebetween can reduce the magnetic resistance between the magnet with epoxy resin.
3, adopt irony packing ring and magnet structure combining, form a closed magnetic circuit with test specimen, making has constant coupling power between protective seam and the test specimen, make coupled layer thickness place identical, has guaranteed the repeatability of optimum measurement.
Claims (3)
1; a kind of magnetic force mounting ultrasonic transducer; it is characterized in that in the center pit of garden cylindrical outer cover (9) lead wire sheath (11) being housed; shell (9) has stepped bore (3); supporting sleeve (5) is housed in the hole; the bottom of the endoporus of supporting sleeve (5) is equipped with damping block (3) successively; piezoelectric chip (1) and entrant sound protective seam (2); damping block (3) top connects a coil (4); the two ends of coil (4) are connected in lead-in wire (10); lead-in wire (10) passes lead wire sheath (11) and guides into outside the sheath; two and half garden shape magnet (6) (7) are housed between the shoulder hole (13) of supporting sleeve (5) and shell (9); certain interval (14) filling is arranged with epoxy resin between this two magnet opposite face, packing ring (8) is contained between shell (9) and the supporting sleeve (5).
2, ultrasonic transducer according to claim 1 is characterized in that shell (9) is formed from aluminium.
3, ultrasonic transducer according to claim 1 is characterized in that annular groove (12) is arranged at the top of shell (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91209034 CN2092757U (en) | 1991-05-31 | 1991-05-31 | Ultrasonic transducer with magnetic fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91209034 CN2092757U (en) | 1991-05-31 | 1991-05-31 | Ultrasonic transducer with magnetic fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2092757U true CN2092757U (en) | 1992-01-08 |
Family
ID=4918092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91209034 Withdrawn CN2092757U (en) | 1991-05-31 | 1991-05-31 | Ultrasonic transducer with magnetic fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2092757U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101297591B (en) * | 2005-12-14 | 2011-09-07 | 株式会社村田制作所 | Ultrasonic transducer |
| CN103017952A (en) * | 2011-09-22 | 2013-04-03 | 北京理工大学 | Magnetic-type ultrasonic oblique incidence sensor transmitter-receiver device |
| CN105209864A (en) * | 2013-05-03 | 2015-12-30 | 恩德斯+豪斯流量技术股份有限公司 | Coupling element, ultrasonic transducer and ultrasonic flow meter |
| CN108760895A (en) * | 2018-04-13 | 2018-11-06 | 沈阳工业大学 | Electromagnetic acoustic elasticity modulus measurement transducer structure |
-
1991
- 1991-05-31 CN CN 91209034 patent/CN2092757U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101297591B (en) * | 2005-12-14 | 2011-09-07 | 株式会社村田制作所 | Ultrasonic transducer |
| CN103017952A (en) * | 2011-09-22 | 2013-04-03 | 北京理工大学 | Magnetic-type ultrasonic oblique incidence sensor transmitter-receiver device |
| CN103017952B (en) * | 2011-09-22 | 2015-11-25 | 北京理工大学 | Magnetic-type ultrasonic oblique incidence sensor transmitter-receiverdevice device |
| CN105209864A (en) * | 2013-05-03 | 2015-12-30 | 恩德斯+豪斯流量技术股份有限公司 | Coupling element, ultrasonic transducer and ultrasonic flow meter |
| US9897471B2 (en) | 2013-05-03 | 2018-02-20 | Endress + Hauser Flowtec Ag | Coupling element, ultrasonic transducer and ultrasonic flow meter |
| CN108760895A (en) * | 2018-04-13 | 2018-11-06 | 沈阳工业大学 | Electromagnetic acoustic elasticity modulus measurement transducer structure |
| CN108760895B (en) * | 2018-04-13 | 2020-11-06 | 沈阳工业大学 | Electromagnetic ultrasonic elastic modulus measuring transducer structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |