CN204594939U - A kind of ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device - Google Patents
A kind of ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device Download PDFInfo
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- CN204594939U CN204594939U CN201420869157.3U CN201420869157U CN204594939U CN 204594939 U CN204594939 U CN 204594939U CN 201420869157 U CN201420869157 U CN 201420869157U CN 204594939 U CN204594939 U CN 204594939U
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Abstract
The utility model belongs to ultrasonic examination and other industry small diameter tube inwall ultrasound field of nuclear power station coarse-grain material small diameter tube inner wall overlaying layer, is specifically related to a kind of ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device.Comprise probe assembly and probe inner core; Probe assembly comprises probe body, probe shell, probe pressing plate, plug, Compress Spring; Probe body is cylindrical structural, and circumference is evenly equipped with three grooves mated with probe shell, and probe shell is installed in groove, and probe shell is outwards ejected automatically by Compress Spring; Plug is arranged on probe body internal cavities front end; Probe pressing plate is fixed on probe body by screw, for limiting the stroke that probe shell outwards ejects; A probe inner core is at least comprised in each probe shell.For effectively checking overlay cladding, the twin crystal longitudinal wave oblique probe of different angles and twin crystal compressional wave normal probe is adopted to carry out axial and circumferential scanning from inner wall overlaying layer.
Description
Technical field
The utility model belongs to ultrasonic examination and other industry small diameter tube inwall ultrasound field of nuclear power station coarse-grain material small diameter tube inner wall overlaying layer, is specifically related to a kind of ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device.
Background technology
The general all built-up welding one deck stainless steel anticorrosion layers of nozzle inner wall on nuclear power station container, ultrasonic examination need be carried out from overlay cladding side according to American ASME and French RCCM standard-required, the bulk of inner wall overlaying layer for heavy caliber adapter generally can meet ultrasonic probe from the close requirement of inwall, ultrasonic probe can adopt stock size and structure, but for small diameter tube inner wall overlaying layer situation then bulk greatly reduce, conventional transducer cannot be positioned over nozzle inner wall, and probe also needs multiple angles, particularly because small diameter tube inwall curvature is large, the transonic rule of twin crystal longitudinal wave probe and flat work pieces are very different, sound scattering can be there is, incidence point offsets, refraction angle change waits series of problems greatly, be very different with the twin crystal longitudinal wave probe technical parameter of routine, the technical parameter index of more difficult control ultrasonic probe.
For the ultrasonic examination of coarse-grain material small diameter tube inner wall overlaying layer, according to inspection laws and regulations requirement, need situation and the overlay cladding internal soundness situation of checking overlay cladding and mother metal faying face, general overlay cladding thickness is 6 ~ 8mm, overlay cladding is again coarse grain material, and conventional probe and inspection technology cannot meet the demands.
For the ultrasonic examination technology from nozzle inner wall scanning, generally adopt automatic scanning device to carry out, but the probe of applicable small diameter tube inwall scanning at home relevant industries yet there are no relevant application report, therefore, the basis utilizing automatic scanning device being developed special ultrasonic probe technology is key of dealing with problems.
Summary of the invention
The purpose of this utility model is to provide a kind of ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device, to meet the demand.
For achieving the above object, technical solution adopted in the utility model is:
For a ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device, comprise probe assembly and probe inner core; Probe assembly comprises probe body, probe shell, probe pressing plate, plug, Compress Spring; Probe body is cylindrical structural, and circumference is evenly equipped with three grooves mated with probe shell, and probe shell is installed in groove, and probe shell is outwards ejected automatically by Compress Spring; Plug is arranged on probe body internal cavities front end; Probe pressing plate is fixed on probe body by screw, for limiting the stroke that probe shell outwards ejects; A probe inner core is at least comprised in each probe shell.
Described probe inner core is twin crystal longitudinal wave oblique probe structure, is arranged side by side by identical two the voussoir symmetries of parameter, launches wafer and is arranged side by side on voussoir with reception wafer also symmetry, respectively signal wire is caused probe socket from respective wafer.
The variation relation of described voussoir angle of a roof θ and small diameter tube inwall curvature is: curvature is larger, and self-focusing effect is more obvious, and the numerical value of the voussoir angle of a roof θ of the same depth of focus is less, and numerical value is from little numerical value toward large numerical value change.
For three kinds of curvature Φ 27mm, the inwall scanning probe of Φ 44mm, Φ 56mm, during the design depth of focus 6mm of twin crystal compressional wave 45 ° of angle probes, corresponding voussoir angle of a roof θ is-0.2 °, 3.1 °, 4.1 °, and when curvature is larger, Contrary compensation value is larger.
When the scanning of inwall circumference, the distribution of the refraction angle that twin crystal compressional wave is 35 ° energy on acoustic beam wafer orientation has optimal effectiveness; The incidence point that circumference probe is popped one's head in when inwall scanning and part curvature centres also keep in a straight line.
Described voussoir has the angle of both direction, the parameter influence of these two angles to probe is identical with axial probe, when depth of focus 6mm, voussoir angle of a roof θ designs according to the focusing parameter of twin crystal 0 ° of longitudinal wave probe, and the spacing of center wafer is consistent with the focusing parameter of twin crystal 0 ° of longitudinal wave probe.
Beneficial effect acquired by the utility model is:
For effectively checking overlay cladding, the twin crystal longitudinal wave oblique probe of different angles and twin crystal compressional wave normal probe is adopted to carry out axial and circumferential scanning from inner wall overlaying layer.For the inwall inspection of small diameter tube, innovate from design concept, grasped the special acoustic propagation path rule of this type of probe, by theory calculate and practical application, demonstrated the design of probe, reach the result of use of expection.Small diameter tube inner wall overlaying layer probe technologies parameter is consistent with the technical parameter Changing Pattern of normally popping one's head in, and meets the performance characteristics of double crystal probe, can be applicable in similar Workpiece structure.
Accompanying drawing explanation
Fig. 1 is probe assembly structural representation;
Fig. 2 is probe assembly C-C cut-open view;
Fig. 3 is plane twin crystal longitudinal wave probe voussoir parameter schematic diagram;
Fig. 4 is axial probe design diagram;
Fig. 5 is circumferential probe designs schematic diagram;
In figure: 1, probe body; 2, probe shell; 3, probe pressing plate; 4, plug; 5, Compress Spring.
Embodiment
As shown in Figure 1 and Figure 2, probe described in the utility model comprises probe assembly and probe inner core; Probe assembly comprises probe body 1, probe shell 2, probe pressing plate 3, plug 4, Compress Spring 5, probe body 1 is cylindrical structural, circumference is evenly equipped with three grooves mated with probe shell 2, probe shell 2 is installed in groove, probe shell 2 is outwards ejected automatically by Compress Spring 5, ensures that probe and absorption surface are good.Probe body 1 internal cavities is used for the cabling in probe signal cable and couplant supply water route, and plug 4 is arranged on probe body 1 internal cavities front end.Probe pressing plate 3 is fixed on probe body 1 by screw, for limiting the stroke that probe shell 2 outwards ejects; A probe inner core is at least comprised, as shown in Figure 3 in each probe shell 2.Probe inner core in probe shell 2 can design respectively and become different angles, adds the dirigibility of application.
As shown in Figure 3, probe inner core is twin crystal longitudinal wave oblique probe structure, is arranged side by side by identical two the voussoir symmetries of parameter, launches wafer and is arranged side by side on voussoir with reception wafer also symmetry, respectively signal wire is caused probe socket from respective wafer.Voussoir has the angle of both direction, and angle is the angle of oblique fire acoustic beam when projecting to surface level and between voussoir plane, and this angle is exactly voussoir incident angle, and voussoir incident angle determines acoustic beam refraction angle within the workpiece.Another angle vertically slants the angle of acoustic beam between the projection and voussoir plane of surface level.This angle is exactly voussoir angle of a roof θ, and voussoir angle of a roof θ determines acoustic beam crossover range within the workpiece, namely usually comes to an agreement " focusing range " of justice.These two angles are key parameters of design twin crystal longitudinal wave oblique probe.
As shown in Figure 4, be surface of contact be convex globoidal structure at the twin crystal longitudinal wave oblique probe of inwall scanning and the difference of plane twin crystal longitudinal wave oblique probe, the most important change of this structure and plane twin crystal longitudinal wave oblique probe is the Self-focusing of acoustic beam.When voussoir angle of a roof θ is 0 ° (in theory acoustic beam out-focus), actual acoustic beam can focus on, therefore must by voussoir angle of a roof θ value inverse change to offset the impact of self-focusing on Theoretical Design focal length.The factor simultaneously affecting focal length also has center wafer spacing, and general center wafer spacing is far away, and the self-focusing of acoustic beam is more obvious, and the theoretical depth of focus shoals, and in reality, the degree of Contrary compensation voussoir angle of a roof θ is larger.
Small diameter tube inwall curvature also affects the self-focusing degree of actual acoustic beam, the variation relation of curvature and voussoir angle of a roof θ is: curvature is larger, self-focusing effect is more obvious, the numerical value of the voussoir angle of a roof θ of the same depth of focus is less, and numerical value is from little numerical value toward large numerical value change, this is the maximum difference with plane twin crystal longitudinal wave oblique probe.
With three kinds of curvature Φ 27mm, Φ 44mm, the inwall scanning probe of Φ 56mm is example (see table 1), during design depth of focus 6mm for twin crystal compressional wave 45 ° of angle probes, corresponding voussoir angle of a roof θ is-0.2 °, 3.1 °, 4.1 °, can find out, when curvature is larger, Contrary compensation value is larger.Also this rule is had in addition for twin crystal compressional wave 70 ° of angle probes.
Table 1: probe voussoir angle of a roof θ Parameter Variation table
When the scanning of inwall circumference, the incident angle of twin crystal longitudinal wave oblique probe be with center wafer to wafer sound beam direction both sides consecutive variations, cause having multiple refraction angle to propagate within the workpiece like this, therefore need to control probe
Wafer size on acoustic beam propagation direction is to reduce impact.
In addition, select suitable refraction angle the energy of other angles can be reduced and avoid acoustic beam to disturb, the distribution of the refraction angle that twin crystal compressional wave is 35 ° energy on acoustic beam wafer orientation has optimal effectiveness.
The incidence point that circumference probe is popped one's head in when inwall scanning also will keep in a straight line with part curvature centres, and Probe index position is the important parameter controlling circumferential head angle.
The focus types of the focusing isoplanar probe of circumference probe is identical, according to the focusing range Selecting parameter of plane probe.
According to the designing points of circumference probe, the structure of probe is shown in accompanying drawing 5.For twin crystal compressional wave 35 ° of angle probes, voussoir also has the angle of both direction, and the parameter influence of these two angles to probe is identical with axial probe, and when depth of focus 6mm, voussoir angle of a roof θ designs according to the focusing parameter of twin crystal 0 ° of longitudinal wave probe.The focusing parameter of spacing also with twin crystal 0 ° of longitudinal wave probe of center wafer is consistent.
For the small diameter tube inwall scanning of different size, different probe inner cores can be designed and form probe assembly again, during scanning, only need change the inspection that probe assembly can carry out next workpiece.Adopt special scanner to mate with probe assembly and carry out automatic gauging from small diameter tube nozzle inner wall, scanner relies on its motion of manual control.Control system can work out the running orbit of scanner, and by the moving displacement of each kinematic axis of multiple scrambler real time record scanner.Checking system completes the signals collecting by inspection region by scanner and control system thereof.
Claims (6)
1. for a ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device, it is characterized in that: comprise probe assembly and probe inner core; Probe assembly comprises probe body (1), probe shell (2), probe pressing plate (3), plug (4), Compress Spring (5); Probe body (1) is cylindrical structural, circumference is evenly equipped with three grooves mated with probe shell (2), probe shell (2) is installed in groove, and probe shell (2) is outwards ejected automatically by Compress Spring (5); Plug (4) is arranged on probe body (1) internal cavities front end; Probe pressing plate (3) is fixed on probe body (1) by screw, for limiting the stroke that probe shell (2) outwards ejects; A probe inner core is at least comprised in each probe shell (2).
2. the ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device according to claim 1, it is characterized in that: described probe inner core is twin crystal longitudinal wave oblique probe structure, be arranged side by side by identical two the voussoir symmetries of parameter, launching wafer is arranged side by side on voussoir with reception wafer also symmetry, respectively signal wire is caused probe socket from respective wafer.
3. the ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device according to claim 2, it is characterized in that: the angle of a roof θ of voussoir and the variation relation of small diameter tube inwall curvature are: curvature is larger, self-focusing effect is more obvious, the numerical value of the voussoir angle of a roof θ of the same depth of focus is less, and numerical value is from little numerical value toward large numerical value change.
4. the ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device according to claim 3, it is characterized in that: for three kinds of curvature Φ 27mm, Φ 44mm, the inwall scanning probe of Φ 56mm, during the design depth of focus 6mm of twin crystal compressional wave 45 ° of angle probes, corresponding voussoir angle of a roof θ is-0.2 °, 3.1 °, 4.1 °, when curvature is larger, Contrary compensation value is larger.
5. the ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device according to claim 2, is characterized in that: when the scanning of inwall circumference, the distribution of the refraction angle that twin crystal compressional wave is 35 ° energy on acoustic beam wafer orientation has optimal effectiveness; The incidence point that circumference probe is popped one's head in when inwall scanning and part curvature centres also keep in a straight line.
6. the ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device according to claim 5, it is characterized in that: described voussoir has the angle of both direction, the parameter influence of these two angles to probe is identical with axial probe, when depth of focus 6mm, voussoir angle of a roof θ designs according to the focusing parameter of twin crystal 0 ° of longitudinal wave probe, and the spacing of center wafer is consistent with the focusing parameter of twin crystal 0 ° of longitudinal wave probe.
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| CN201420869157.3U CN204594939U (en) | 2014-12-30 | 2014-12-30 | A kind of ultrasonic twin crystal longitudinal wave oblique probe for coarse-grain material deep camber Work inspection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806958A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Ultrasonic bicrystal longitudinal wave angle probe for inspection of crude crystal large-curvature workpiece |
| CN105842342A (en) * | 2016-06-24 | 2016-08-10 | 爱德森（厦门）电子有限公司 | Device and method for detecting quality of metal composite material substrate surface covering layer |
-
2014
- 2014-12-30 CN CN201420869157.3U patent/CN204594939U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806958A (en) * | 2014-12-30 | 2016-07-27 | 中核武汉核电运行技术股份有限公司 | Ultrasonic bicrystal longitudinal wave angle probe for inspection of crude crystal large-curvature workpiece |
| CN105842342A (en) * | 2016-06-24 | 2016-08-10 | 爱德森（厦门）电子有限公司 | Device and method for detecting quality of metal composite material substrate surface covering layer |
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