CN204422486U - A kind of ultrasonic dry coupling probe apparatus - Google Patents
A kind of ultrasonic dry coupling probe apparatus Download PDFInfo
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- CN204422486U CN204422486U CN201520079962.0U CN201520079962U CN204422486U CN 204422486 U CN204422486 U CN 204422486U CN 201520079962 U CN201520079962 U CN 201520079962U CN 204422486 U CN204422486 U CN 204422486U
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Abstract
The utility model relates to a kind of ultrasonic dry coupling probe apparatus.A kind of ultrasonic dry coupling probe apparatus, comprises probe tool and by hard-wired two probes of probe tool and cable splice, cable splice is connected with probe; Described probe is made up of the three laminated piezoelectricity oscillators fitted together by housing and ultrasonic transformer; Be provided with a counterbore in housing, counterbore base is provided with a through hole; Three laminated piezoelectricity oscillator and locking devices are provided with from bottom to top successively in counterbore; Be provided with a ultrasonic transformer in through hole, ultrasonic transformer stretches out through hole, and contacts with three laminated piezoelectricity oscillators and connect.The utility model adopts the energy loss reduced when propagating between piezoelectric vibrator and object to be detected, improves receiving sensitivity.The pressure adjustment assembly of design can regulate coupling pressure size according to different detected objects, and probe tool ensure that the relative position between transmitting probe and receiving transducer is constant, and is in same plane, can realize detecting the one side of object.
Description
Technical field
The utility model relates to and utilizes ultrasound wave, sound wave or infrasonic wave to test or analysis of material, by launching sound wave or sound wave obtains the image technology field of interior of articles by object, is specifically related to a kind of ultrasonic dry coupling probe apparatus.
Background technology
Ultrasonic detection method is by being divided into wet coupling and dry-cured meat two kinds of methods the need of couplant.Adopt wet coupling detecting method, need to be coated with one deck fluid couplant between ultrasonic probe and checking matter surface.Wet coupling detecting method due to ultrasonic wave-coupled effective, energy loss is little, has higher detection sensitivity, but detected test specimen needs daubing coupling agent, do not allow the product contaminating liquid that wet coupling process then can not be used to detect for some surfaces, can only dry-cured meat be selected.At present, domestic dry-cured meat detection method mainly increases one deck soft rubber layer between common ultrasonic probe and detected material surface, by applying certain pressure, probe and object to be detected intimate surface being fitted, realizing dry-cured meat with this.The major defect of this method is that ultrasound wave energy attenuation in rubber layer is very large, and receiving sensitivity is lower, and coupling pressure change for testing result impact very greatly.Two ultrasonic probes are generally needed when making to detect in this way, one for launching ultrasound wave, another is for receiving ultrasound wave, during detection, object to be detected is placed between two probes, transmitting probe launches ultrasound wave from the side of object to be detected, and ultrasound wave is received by the probe of opposite side through after object.Therefore this dry-cured meat detection method requires that object to be detected both sides have accessibility, belongs to two-sided detection (or transmission detection).Obviously, can only the one side structure (as closed structure, its inside surface cannot arrive) that can reach for those, this dry-cured meat method cannot be adopted.
Summary of the invention
The utility model is intended to propose a kind of ultrasonic dry coupling probe apparatus for the object being unsuitable for daubing coupling agent and need one side to detect.
The technical solution of the utility model is:
A kind of ultrasonic dry coupling probe apparatus, comprises the probe tool being provided with two cable splices and two probes be arranged in probe tool, and two cable splices are connected with two electricity of popping one's head in; Described probe is formed by housing and with the three laminated piezoelectricity oscillators fitted together by housing and ultrasonic transformer; Be provided with a stepped throughhole in housing, in its through hole upper end, be provided with three laminated piezoelectricity oscillator and locking devices from bottom to top successively; Through hole bottom arranges a ultrasonic transformer, and ultrasonic transformer one end contacts with three laminated piezoelectricity oscillators and connects, and the other end stretches out through hole.
Described locking device is made up of pressure ring, gland nut and set nut; Wherein, three laminated piezoelectricity oscillators, contact connection successively with pressure ring, gland nut, gland nut is threaded with set nut.
Three described laminated piezoelectricity oscillators are by the two panels piezoelectric chip of parallel connection and the sheet metal between being clipped in is mutually bonding forms, piezoelectric chip and sheet metal are the disk that diameter is identical, two panels piezoelectric chip is connected to cable, and two cables are connected respectively with cable splice.
Described probe tool is made up of pedestal, top cover and cable splice; Pedestal is provided with the hole that two internal diameters and shell dimension match, and probe is fixed in this hole.
Described probe tool pedestal is rectangular structure, and base bottom surface is provided with 4 legs.
Technique effect of the present utility model is:
The utility model adopts three laminated piezoelectricity oscillator and Transformer designs, effectively reduces energy loss when propagating between piezoelectric vibrator and object to be detected, can improve receiving sensitivity.The pressure adjustment assembly of design can regulate coupling pressure size according to different detected objects, and maintains optimum coupling pressure, guarantees testing result not by coupling pressure variable effect.Probe tool ensure that the relative position between transmitting probe and receiving transducer is constant, and is in same plane, can realize detecting the one side of object.
Accompanying drawing explanation
Fig. 1 tri-laminated piezoelectricity oscillator structure schematic diagram.
Fig. 2 sonde configuration schematic diagram.
Fig. 3 probe tool structural representation.
Wherein, 1-piezoelectric chip, 2-sheet metal, 3-cable, 4-tri-laminated piezoelectricity oscillator, 5-housing, 6-insulate snap ring, 7-rubber ring, 8-pressure ring, 9-set nut, 10-gland nut, 11-cable splice, 12-ultrasonic transformer, 13-top cover, 14-pedestal, 15-spring, 16-pressure adjusting screw, 17-briquetting.
Embodiment
embodiment 1
Three laminated piezoelectricity oscillators 4 are by the two panels piezoelectric chip 1 of parallel connection and the sheet metal 2 between being clipped in is mutually bonding forms, and piezoelectric chip 1 are connected to cable 3, as shown in Figure 1.Sheet metal 2 material is aluminium, thick 0.4mm, diameter 10mm; Piezoelectric chip 1 material is PZT piezoelectric ceramics, thick 0.4mm, diameter 10mm; Bonded together by electro-conductive adhesive between aluminium flake and piezoelectric chip 1; The circuit connecting mode of piezoelectric chip 1 is in parallel, respectively draws a cable 3 from upper and lower surface.The effect of piezoelectric vibrator is launched ultrasound wave or receives ultrasound wave: according to inverse piezoelectric effect, and when applying a high electric field pulse between piezoelectric vibrator two electrode, oscillator can produce mechanical vibration thus launch ultrasound wave; According to piezoelectric effect, when piezoelectric vibrator surface is subject to ultrasonic exciting generation vibration, between two electrodes, certain voltage can be produced.
Ultrasonic transformer 12 is the right cylinders be made up of acoustic window material, and its diameter is 1/3 of piezoelectric vibrator diameter, is 3mm, and length is 1/2 wavelength, is 12mm; Ultrasonic transformer 12 makes piezoelectric vibrator mate better with detected material surface to be coupled, because ultrasonic transformer 12 has good sound translative performance, effectively can to reduce energy loss when ultrasound wave is propagated between piezoelectric vibrator and object to be detected, improves detection sensitivity.
Sonde configuration as shown in Figure 2, is made up of housing 5, insulation snap ring 6, rubber ring 7, pressure ring 8, set nut 9 and gland nut 10.Housing 5 is made up of stainless steel material machining, the combination of the right cylinder that housing 5 intersects for bottom surface and cone, external diameter 16mm, height 22mm, housing 5 inside is the stepped throughhole of a diameter 14mm, degree of depth 10mm, the internal thread of upper end processing M14, through-hole diameter 3mm is identical with ultrasonic transformer 12 diameter.Be provided with the snap ring 6 that insulate between three laminated piezoelectricity oscillators 4 and through hole top, insulation snap ring 6 is made up of engineering plastics, and its external diameter is identical with counter bore hole diameters, and internal diameter is identical with three laminated piezoelectricity oscillator 4 diameters, is highly 2mm.Pressure ring 8 is made up of stainless steel material machining, and shape is drum-shaped, and external diameter is identical with through hole top, processes external diameter and be 5mm, highly be the projection of 0.5mm, the rubber ring 7 of projection overcoat internal diameter 5mm, external diameter 7mm bottom it.Bottom pressure ring 8, the place of keeping to the side opens the through hole of diameter 1mm, for the cable 3 through piezoelectric vibrator.Gland nut 10 is made up of stainless steel material machining, and shape is drum-shaped, and outside surface is processed with the external thread of M14, internal diameter 10mm, and bottom center has circular hole, for the cable 3 through piezoelectric vibrator.Set nut 9 is made up of stainless steel material machining, external diameter 22mm, and inner side is processed with M14 internal thread.
Probe assembling process is as follows: first insulation snap ring 6 is put into housing 5, three laminated piezoelectricity oscillators 4 are put into insulation snap ring 6, then rubber ring 7 is enclosed within the boss of pressure ring 8, pressure ring 8 is put into housing 5 and extruding insulation snap ring 6, by the cable 3 of piezoelectric vibrator through the through hole on pressure ring 8.Gland nut 10 is screwed in housing 5, pressure ring 8 is compressed.By set nut 9 in gland nut 10 upper end, make it locking.Finally ultrasonic transformer 12 is stretched into housing 5 from the through hole of circular cone bottom inner, make its upper end extrude three laminated piezoelectricity oscillators 4.
Probe tool is made up of pedestal 14, top cover 13 and cable splice 11, and structure as shown in Figure 3.Pedestal 14 is made up of aluminum alloy materials machining, is rectangular structure, is processed with 4 legs at its bottom surface, and height 5mm, is in same plane.Pedestal 14 is processed with two circular ports, and diameter is identical with probing shell 5 external diameter, installs two probes respectively, is respectively used to transmit and receive ultrasound wave.Top cover 13 is made up of aluminum alloy materials machining, and corner is connected with pedestal 14 by screw.Top cover 13 side is provided with two cable splices 11, and the inner cable 3 of drawing from piezoelectric vibrator with probe of joint is connected.
Embodiment 2
Top cover 13 is popped one's head in two and relative position is respectively equipped with the screw of a M3; Pressure adjustment assembly is provided with in screw.Pressure adjustment assembly is made up of spring 15, pressure adjusting screw 16 and briquetting 17.The external diameter of spring 15 is identical with the internal diameter of gland nut 10.Pressure adjusting screw 16 length 35mm, external thread diameter is M3.Briquetting 17 is provided with a boss, and spring 15 inserts in boss, and briquetting 17 upper end diameter is greater than spring 15 external diameter.The blind hole of briquetting 17 central authorities processing diameter 3mm, the lower end of pressure adjusting screw 16 can be stretched in blind hole.Pressure adjustment assembly, for regulating the coupling pressure between probe and testee, by rotational pressure adjusting screw(rod) 16, can change coupling pressure size.When turn clockwise adjusting screw(rod) time, briquetting 17 declines, and spring 15 is compressed, coupling pressure increase; When being rotated counterclockwise adjusting screw(rod), briquetting 17 rises, and spring 15 relaxes, and coupling pressure reduces.For different detected objects, by pressure adjustment assembly, coupling pressure is adjusted to optimum value, the impact of coupling pressure change on testing result can be reduced.
Using method of the present utility model is: before carrying out ultrasound examination, probe cable joint 11 is connected with receiving end with the transmitting terminal of supersonic reflectoscope respectively, then dry-cured meat probe is put to testee surface, apply pressure and make leg bottom probe tool completely and testee surface contact.Rotational pressure adjusting screw(rod) 16, according to the ultrasonic signal situation of change that supersonic reflectoscope receives, determines optimum coupling pressure.Move dry-cured meat probe in detected material surface, moving process keeps the leg bottom probe tool to contact all the time with testee surface, can judge according to the ultrasonic signal change that supersonic reflectoscope receives to interior of articles defect.
Claims (5)
1. a ultrasonic dry coupling probe apparatus, comprises the probe tool being provided with two cable splices and two probes be arranged in probe tool, and two cable splices (11) are connected with two electricity of popping one's head in; It is characterized in that: described probe is formed by housing (5) and with the three laminated piezoelectricity oscillators (4) fitted together by housing (5) and ultrasonic transformer (12); Housing is provided with a stepped throughhole in (5), is provided with three laminated piezoelectricity oscillator (4) and locking devices in its through hole upper end from bottom to top successively; Through hole bottom arranges a ultrasonic transformer (12), and ultrasonic transformer (12) one end contacts with three laminated piezoelectricity oscillators (4) and connects, and the other end stretches out through hole.
2. a kind of ultrasonic dry coupling probe apparatus as claimed in claim 1, is characterized in that: described locking device is made up of pressure ring (8), gland nut (10) and set nut (9); Wherein, three laminated piezoelectricity oscillators (4), contact connection successively with pressure ring (8), gland nut (10), gland nut (10) is threaded with set nut (9).
3. a kind of ultrasonic dry coupling probe apparatus as claimed in claim 1, it is characterized in that: three described laminated piezoelectricity oscillators (4) are by the two panels piezoelectric chip (1) of parallel connection and the sheet metal (2) between being clipped in is mutually bonding forms, piezoelectric chip (1) and sheet metal (2) are the identical disk of diameter, two panels piezoelectric chip (1) is connected to cable (3), two cables (3) are connected respectively with cable splice (11).
4. a kind of ultrasonic dry coupling probe apparatus as claimed in claim 1, is characterized in that: described probe tool is made up of pedestal (14), top cover (13) and cable splice (11); Pedestal (14) is provided with the hole that two internal diameters and housing (5) size match, and probe is fixed in this hole
.
5. a kind of ultrasonic dry coupling probe apparatus as claimed in claim 4, is characterized in that: described probe tool pedestal (14) is rectangular structure, and pedestal (14) bottom surface is provided with 4 legs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520079962.0U CN204422486U (en) | 2015-02-04 | 2015-02-04 | A kind of ultrasonic dry coupling probe apparatus |
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| CN201520079962.0U CN204422486U (en) | 2015-02-04 | 2015-02-04 | A kind of ultrasonic dry coupling probe apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289616A (en) * | 2016-10-13 | 2017-01-04 | 西南交通大学 | The adjustable Portable probe fixing device of ultrasonic measurement of stress system coupling pressure |
| CN107328864A (en) * | 2017-07-17 | 2017-11-07 | 中国铁道科学研究院金属及化学研究所 | A kind of combination ultrasonic probe of adjustable bonding force |
| CN107989652A (en) * | 2017-12-18 | 2018-05-04 | 北京科技大学 | Rock mass energy flow monitor |
| CN108507661A (en) * | 2018-03-22 | 2018-09-07 | 天津大学 | Dual probe piezoelectric transducer for fast and accurate measurement surface wave velocity of wave |
| CN113686972A (en) * | 2021-09-06 | 2021-11-23 | 中北大学 | Ultrasonic laminated transducer for detecting viscoelastic solid |
| CN114324587A (en) * | 2021-12-28 | 2022-04-12 | 中国飞机强度研究所 | Detection device adopting dry coupling ultrasonic penetration method |
-
2015
- 2015-02-04 CN CN201520079962.0U patent/CN204422486U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289616A (en) * | 2016-10-13 | 2017-01-04 | 西南交通大学 | The adjustable Portable probe fixing device of ultrasonic measurement of stress system coupling pressure |
| CN107328864A (en) * | 2017-07-17 | 2017-11-07 | 中国铁道科学研究院金属及化学研究所 | A kind of combination ultrasonic probe of adjustable bonding force |
| CN107989652A (en) * | 2017-12-18 | 2018-05-04 | 北京科技大学 | Rock mass energy flow monitor |
| CN107989652B (en) * | 2017-12-18 | 2024-02-23 | 北京科技大学 | Rock energy flow monitor |
| CN108507661A (en) * | 2018-03-22 | 2018-09-07 | 天津大学 | Dual probe piezoelectric transducer for fast and accurate measurement surface wave velocity of wave |
| CN113686972A (en) * | 2021-09-06 | 2021-11-23 | 中北大学 | Ultrasonic laminated transducer for detecting viscoelastic solid |
| CN114324587A (en) * | 2021-12-28 | 2022-04-12 | 中国飞机强度研究所 | Detection device adopting dry coupling ultrasonic penetration method |
| CN114324587B (en) * | 2021-12-28 | 2024-01-12 | 中国飞机强度研究所 | Dry coupling ultrasonic penetration method detection device |
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