CN214122115U - Blade root magnetic adsorption ultrasonic detection device - Google Patents
Blade root magnetic adsorption ultrasonic detection device Download PDFInfo
- Publication number
- CN214122115U CN214122115U CN202023113374.4U CN202023113374U CN214122115U CN 214122115 U CN214122115 U CN 214122115U CN 202023113374 U CN202023113374 U CN 202023113374U CN 214122115 U CN214122115 U CN 214122115U
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- probe
- blade
- ultrasonic
- blade root
- guide rail
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- 238000001514 detection method Methods 0.000 title claims abstract description 49
- 238000001179 sorption measurement Methods 0.000 title abstract description 11
- 239000000523 sample Substances 0.000 claims abstract description 103
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000005389 magnetism Effects 0.000 claims abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 12
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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Abstract
A blade root magnetic adsorption ultrasonic detection device comprises a guide rail used for being attached to the surface of a blade to be detected and a moving vehicle body moving along the guide rail, wherein the moving vehicle body is provided with a probe clamping device and a coupling device which move synchronously with the moving vehicle body; the probe clamping device comprises a connecting seat and a probe fixing clamp which are fixedly connected with the moving vehicle body, the connecting seat is provided with a connecting shaft, the probe fixing clamp is sleeved on the connecting shaft and is in rotating fit with the connecting shaft, and the connecting shaft is sleeved with a torsional spring for driving the probe fixing clamp to rotate towards one side where the blade to be measured is located; the integrated wedge block probe is arranged on the probe fixing clamp and comprises an ultrasonic probe, and a wedge block is attached to the surface of one side, facing the blade to be detected, of the ultrasonic probe. The utility model discloses a blade root magnetism adsorbs ultrasonic testing device can effectively overcome the problem of the detection difficulty that leads to because of the interval is narrow between the turbine blade to have the advantage of structure light and handy and convenient to use, can improve detection efficiency.
Description
Technical Field
The utility model belongs to the technical field of the supersound nondestructive test, specific be a blade root magnetism adsorbs ultrasonic testing device.
Background
In the troubleshooting of steam turbines, blade damage is the leading cause of accidents, and the resulting accidents are most common in steam turbine accidents. The cause of the turbine failure caused by the damage of the blades is the generation of cracks in the blades, thereby causing more serious breakage, causing the turbine failure.
The distance between the turbine blades is narrow, which leads to the difficulty of detection. The ultrasonic detection device for the blade root of the steam turbine of the nuclear power station, disclosed in the Chinese patent application with the publication number of CN111189918A, comprises an ultrasonic instrument and a probe; the probe comprises a wedge-shaped block and a probe wafer, wherein the wedge-shaped block is provided with a guide surface and a mounting surface opposite to the guide surface, the probe wafer is mounted on the mounting surface, and the ultrasonic instrument is connected with the probe wafer through a probe line; the nuclear power station steam turbine comprises a steam turbine blade root, a steam turbine blade body and an outer platform arranged between the steam turbine blade root and the steam turbine blade body, wherein a transition arc surface is arranged between the outer platform and the steam turbine blade body, and the guide surface is matched with the transition arc surface; and after being excited by the probe wafer, the ultrasonic sound beam emitted by the ultrasonic instrument enters the turbine blade root through the guide surface and the transition arc surface attached to the guide surface so as to carry out full-focus array ultrasonic detection on the turbine blade root. Although the ultrasonic detection device can meet the detection requirements of the blade root of the steam turbine of the nuclear power station to a certain extent, the size of the probe structure is large, and the problem of difficult detection caused by narrow distance between the blades of the steam turbine is still not solved. For steam turbine blades, no efficient scanning device can be used at present.
Disclosure of Invention
In view of this, the utility model aims at providing a blade root magnetism adsorbs ultrasonic testing device can effectively overcome the problem of the detection difficulty that leads to because of the interval is narrow between the turbine blade to have the advantage of light and handy and convenient to use of structure, can improve detection efficiency.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a blade root magnetic adsorption ultrasonic detection device comprises a guide rail used for being attached to the surface of a blade to be detected and a moving vehicle body moving along the guide rail, wherein the moving vehicle body is provided with a probe clamping device and a coupling device which move synchronously with the moving vehicle body;
the probe clamping device comprises a connecting seat and a probe fixing clamp which are fixedly connected with the moving vehicle body, a connecting shaft is arranged on the connecting seat, the probe fixing clamp is sleeved on the connecting shaft and is in rotating fit with the connecting shaft, and a torsion spring for driving the probe fixing clamp to rotate towards one side where the blade to be measured is located is sleeved on the connecting shaft;
the integrated wedge block probe is arranged on the probe fixing clamp and comprises an ultrasonic probe, and a wedge block is attached to the surface of one side, where the ultrasonic probe faces the blade to be measured, of the ultrasonic probe.
Furthermore, the probe fixing clamp is provided with an installation shaft, and the ultrasonic probe is installed on the installation shaft in a rotating fit manner; the probe fixing clamp is further provided with a pre-pressure block positioned on one side, back to the wedge block, of the ultrasonic probe, a pre-pressure spring is arranged between the pre-pressure block and the ultrasonic probe, and the direction of the pre-pressure force applied by the pre-pressure spring to the ultrasonic probe is perpendicular to the axial space of the mounting shaft but does not intersect with the axial space.
Further, the guide rail comprises a flexible rail body which is used for being attached to the surface of the blade, and two ends of the flexible rail body are respectively provided with a clamping sleeve which is used for clamping and fixing two side edges of the blade to be measured.
Further, flexible track body adopts flexible chain, flexible chain includes a plurality of chain links of series connection, adjacent two articulated connection between the chain link, just the chain link is equipped with the magnet piece towards the one side at measured blade place.
Furthermore, a middle bolt sleeve is arranged in the middle of one side of each chain link, edge bolt sleeves are respectively arranged at two ends of the other side of each chain link, the distance between the two edge bolt sleeves is larger than or equal to that between the middle bolt sleeves, the middle bolt sleeve of one chain link is positioned between the two edge bolt sleeves of the other chain link in every two adjacent chain links, and bolts are arranged in the middle bolt sleeves and the two edge bolt sleeves to enable the two adjacent chain links to be in running fit.
Further, the flexible track body includes flexible guidance tape, flexible guidance tape is equipped with the magnet piece towards one side interval of being surveyed the blade.
Furthermore, a positioning structure for positioning the position of the guide rail is also arranged on the guide rail; the positioning structure comprises an installation block arranged on the clamping sleeve, the installation block is sleeved with a positioning rod in sliding fit with the installation block, the positioning rod is sleeved with a positioning block in positioning fit with the blade root of the blade to be measured, and the installation block and the positioning block are respectively provided with a locking screw for locking the positioning rod.
Furthermore, scales are arranged on the positioning rod.
Further, the movable vehicle body comprises a vehicle body seat, a sliding groove in sliding fit with the guide rail is arranged on the vehicle body seat, or a sliding hole in sliding fit with the guide rail is arranged on the vehicle body seat and sleeved with the guide rail, and magnetic rollers are arranged on two sides of the vehicle body seat respectively.
Further, be equipped with the encoder mounting bracket on the automobile body seat, be equipped with the encoder on the encoder mounting bracket.
The beneficial effects of the utility model reside in that:
the utility model discloses a blade root magnetism adsorbs ultrasonic testing device, through setting up the guide rail with being surveyed the blade surface laminating to make the removal automobile body move along guide rail, so convenient plans the detection route according to the detection area, avoid appearing lou examining the region, convenient to use can improve detection efficiency; the connecting seat is rotationally matched with the probe fixing clamp, and the torsional spring is arranged to drive the probe fixing clamp to rotate towards one side where the blade to be detected is located, so that the integrated wedge block probe can be always attached to the blade to be detected, and the detection precision is improved; the wedge block is directly attached to the ultrasonic probe, so that the thickness of the integrated wedge block probe can be effectively reduced, and the problem of difficulty in detection caused by narrow space between the turbine blades can be effectively solved; the blade root magnetic adsorption ultrasonic detection device of the utility model is light and handy in design and convenient in use, and solves the problems of the turbine blade clearance being too small and scanning difficulty and the like by using the probe of the integrated wedge block; meanwhile, the mode of using the guide rail and the movable vehicle body improves the scanning efficiency and accuracy and realizes quick detection.
Drawings
In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:
FIG. 1 is a schematic structural view of an embodiment of the ultrasonic blade root magnetic adsorption detection device of the present invention;
FIG. 2 is a schematic diagram of the structure of an integrated wedge probe;
FIG. 3 is a schematic structural view of a guide rail;
fig. 4 is a schematic structural diagram of the probe clamping device.
Description of reference numerals:
1-integrating a wedge probe; 11-an ultrasound probe; 12-a wedge block;
2-a guide track; 21-a flexible track body; 22-a clamping sleeve; 23-chain link; 24-a magnet piece; 25-middle bolt sleeve; 26-edge bolt sleeves; 27-a mounting block; 28-positioning rods; 29-positioning blocks; 30-locking screws;
3-a probe clamping device; 31-a connecting seat; 32-probe fixing clamp; 33-a connecting shaft; 34-a torsion spring; 35-mounting shaft; 36-pre-press block; 37-a pre-compression spring;
4-moving the vehicle body; 41-vehicle body seat; 42-a chute; 43-magnetic rollers; 44-an encoder mount; 45-an encoder;
5-measured leaf.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
As shown in fig. 1, it is the structural schematic diagram of the embodiment of the blade root magnetic adsorption ultrasonic detection device of the present invention. The ultrasonic detection device for the magnetic adsorption of the blade root comprises a guide rail 2 used for being attached to the surface of a blade to be detected and a moving vehicle body 4 moving along the guide rail 2, wherein the moving vehicle body 4 is provided with a probe clamping device 3 and a coupling device (not shown in the figure) which move synchronously with the moving vehicle body.
The probe clamping device 3 of the embodiment comprises a connecting seat 31 and a probe fixing clamp 32 which are fixedly connected with the moving vehicle body 4, wherein a connecting shaft 33 is arranged on the connecting seat 31, the probe fixing clamp 32 is sleeved on the connecting shaft 33 and is in rotating fit with the connecting shaft 33, and a torsion spring 34 which is used for driving the probe fixing clamp 32 to rotate towards one side where a measured blade is located is sleeved on the connecting shaft 33. The torsion spring 34 is arranged to drive the probe fixing clamp 32 to rotate towards the side where the blade to be detected is located, so that the integrated wedge probe 1 is always attached to the blade to be detected. Specifically, the installation is equipped with integrated wedge probe 1 on the probe mounting fixture 32 of this embodiment, and integrated wedge probe 1 includes ultrasonic probe 11, and ultrasonic probe 11 has the voussoir 12 towards laminating on the surface of one side at the blade place of being surveyed, and the voussoir 12 of this embodiment directly laminates on ultrasonic probe 11, and the voussoir 12 of this embodiment adopts the thin slice structure, can effectively reduce the thickness of integrated wedge probe to overcome the problem of the detection difficulty that leads to because of the narrow and small interval between the turbine blade.
Further, the probe fixing jig 32 of the present embodiment is provided with a mounting shaft 35, and the ultrasonic probe 11 is rotatably fitted on the mounting shaft 35; the probe fixing clamp 32 is further provided with a pre-pressure block 36 positioned on one side of the ultrasonic probe 11, which is opposite to the wedge 12, a pre-pressure spring 37 is arranged between the pre-pressure block 36 and the ultrasonic probe 11, and the direction of the pre-pressure force applied by the pre-pressure spring 37 to the ultrasonic probe 11 is vertical to the axial space of the mounting shaft 35 but does not intersect with the axial space. The ultrasonic probe 11 is arranged on the probe fixing clamp 32 in a rotating fit mode, pre-pressure is applied to the ultrasonic probe 11 through the pre-pressure spring 37, the pre-pressure direction is eccentric relative to the installation shaft 35, the pre-pressure exerts a torque effect on the ultrasonic probe 11, and therefore the integrated wedge probe 1 and the wedge 12 can be kept attached to a blade to be detected under the action of the pre-pressure, and detection accuracy is improved.
Further, the guide rail 2 comprises a flexible rail body 21 for attaching to the surface of the blade, and two ends of the flexible rail body 21 are respectively provided with a clamping sleeve 22 for clamping and fixing two side edges of the blade to be measured. The flexible rail body 21 of this embodiment adopts flexible chain, and flexible chain includes a plurality of chain links 23 of series connection, and articulated connection between two adjacent chain links 23, and the one side that chain link 23 located towards the blade that is surveyed is equipped with magnet piece 24, and is specific, the magnet piece 24 of this embodiment passes through screw fixed mounting on linking 23. The clamping sleeve 22 of the present embodiment is connected with one link 23 at the end by means of a snap connection and is fixed with screws. The middle part of one side of chain link 23 of this embodiment is equipped with middle part bolt cover 25, the both ends of opposite side are equipped with limit portion bolt cover 26 respectively, interval more than or equal to middle part bolt cover 25 between two limit portion bolt covers 26, in two adjacent chain links 23, middle part bolt cover 25 of one of them chain link 23 is located between two limit portion bolt covers 26 of another chain link 23, and be equipped with the bolt and make these two adjacent chain links 23 normal running fit in this middle part bolt cover 25 and two limit portion bolt covers 26, the bolt passes through the screw and realizes that the axial is spacing, prevent to drop in middle part bolt cover 25 and the limit portion bolt cover 26. The flexible track body 21 is made of flexible chains, and various curved surfaces of the blade to be detected can be matched by utilizing the hinged connection relation between two adjacent chain links 23. Of course, the flexible track body 21 may also be implemented in other manners, for example, the flexible track body 21 may further include a flexible guiding strip, and the flexible guiding strip is provided with a magnet block at an interval on one side facing the detected blade, and also may implement the technical purpose of attaching to the surface of the detected blade and guiding the moving vehicle body 4.
Furthermore, a positioning structure for positioning the position of the guide rail 2 is also arranged on the guide rail; the positioning structure comprises a mounting block 27 arranged on the clamping sleeve 22, a positioning rod 28 in sliding fit with the mounting block 27 is sleeved on the mounting block 27, a positioning block 29 used for being in positioning fit with the blade root of the blade to be measured is sleeved on the positioning rod 28, and locking screws 30 used for locking the positioning rod 28 are respectively arranged on the mounting block 27 and the positioning block 29. The positioning rod 28 of the present embodiment is provided with scales, so that the distance between the mounting block 27 and the positioning block 29 can be precisely adjusted. When the integrated wedge probe is used, the positioning block 29 is matched with the root part of the blade to be detected in a positioning mode, and then the distance between the mounting block 27 and the positioning block 29 is adjusted, so that the position of the integrated wedge probe 1 relative to the root part of the blade to be detected can be accurately adjusted, and the accurate adjustment of the detection area range of the integrated wedge probe 1 is achieved.
Further, the movable vehicle body 4 of the present embodiment includes a vehicle body seat 41, a sliding groove 42 slidably fitted with the guide rail 2 is provided on the vehicle body seat 41, or a sliding hole slidably fitted and sleeved on the guide rail 2 is provided on the vehicle body seat 41, and magnetic rollers 43 are respectively provided on two sides of the vehicle body seat 41. The vehicle body seat 41 of the embodiment is provided with the sliding groove 42 in sliding fit with the guide rail 2, and the moving position and direction of the vehicle body 4 can be guided and moved through the sliding fit relation between the sliding groove 42 and the guide rail 2, so that the detection area range of the integrated wedge probe 1 can be accurately controlled. Be equipped with encoder mounting bracket 44 on the automobile body seat 41 of this embodiment, be equipped with encoder 45 on the encoder mounting bracket 44, the encoder 45 of this embodiment adopts displacement encoder for the record is integrated voussoir probe 1 sweeps the stroke, realizes clearly judging the concrete position of blade crackle in the C of ultrasonic phased array instrument sweeps the image.
Specifically, the working process of detecting the blade by using the blade root magnetic adsorption ultrasonic detection device of the embodiment is as follows:
1) attaching the guide rail 2 to the measured blade, namely adsorbing the magnet piece 24 on the chain link 23 on the surface of the measured blade, adjusting the position, and then tensioning and fixing the position on the measured blade 5 through the clamping sleeve 22;
2) mounting the integrated wedge probe 1 on a probe fixing clamp 32;
3) mounting a pre-pressure spring 37 on the pre-pressure block 36, mounting the pre-pressure block 36 on the probe fixing clamp 32 after adjustment, and applying pre-pressure to the integrated wedge probe 1 by the pre-pressure spring 37;
4) mounting the movable vehicle body 4 on the guide rail 2, providing coupling agent for the coupling device and coupling the integrated wedge probe 1 with the blade to be detected; the movable vehicle body 4 is pushed to move, and the encoder records the motion track of the integrated wedge probe 1 on the blade so as to clearly judge which position of the blade has the defects of corrosion and the like in the scanned image of the instrument;
5) when the movable vehicle body 4 moves from one end to the other end along the guide rail 2, blade detection is completed for one time;
6) adjusting the position of the guide track 2, and repeating the steps 1) to 5) until the detection of the area needing to be detected on the detected blade is completed.
According to the blade root magnetic adsorption ultrasonic detection device, the guide rail attached to the surface of the detected blade is arranged, and the movable vehicle body moves along the guide rail, so that a detection path is conveniently planned according to a detection area, the detection missing area is avoided, the use is convenient, and the detection efficiency can be improved; the connecting seat is rotationally matched with the probe fixing clamp, and the torsional spring is arranged to drive the probe fixing clamp to rotate towards one side where the blade to be detected is located, so that the integrated wedge block probe can be always attached to the blade to be detected, and the detection precision is improved; the wedge block is directly attached to the ultrasonic probe, so that the thickness of the integrated wedge block probe can be effectively reduced, and the problem of difficulty in detection caused by narrow space between the turbine blades can be effectively solved; the blade root magnetic adsorption ultrasonic detection device is light and handy in design and convenient to use, and the problem that the clearance of the turbine blade is too small and scanning is difficult and the like is solved by using the probe integrating the wedge block; meanwhile, the mode of using the guide rail and the movable vehicle body improves the scanning efficiency and accuracy and realizes quick detection.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (10)
1. The utility model provides a blade root magnetism adsorbs ultrasonic testing device which characterized in that: the device comprises a guide rail (2) which is used for being attached to the surface of a blade to be detected and a moving vehicle body (4) which moves along the guide rail (2), wherein the moving vehicle body (4) is provided with a probe clamping device (3) and a coupling device which move synchronously with the moving vehicle body;
the probe clamping device (3) comprises a connecting seat (31) and a probe fixing clamp (32) which are fixedly connected with the moving vehicle body (4), a connecting shaft (33) is arranged on the connecting seat (31), the probe fixing clamp (32) is sleeved on the connecting shaft (33) and is in running fit with the connecting shaft (33), and a torsion spring (34) for driving the probe fixing clamp (32) to rotate towards one side where the detected blade is located is sleeved on the connecting shaft (33);
the integrated wedge block probe (1) is arranged on the probe fixing clamp (32) in an installing mode, the integrated wedge block probe (1) comprises an ultrasonic probe (11), and a wedge block (12) is attached to the surface, facing the side where the blade to be detected is located, of the ultrasonic probe (11).
2. The ultrasonic blade root magnetic attachment detection device of claim 1, wherein: the probe fixing clamp (32) is provided with a mounting shaft (35), and the ultrasonic probe (11) is mounted on the mounting shaft (35) in a rotating fit manner; the probe fixing clamp (32) is further provided with a pre-pressure block (36) located on one side, back to the wedge block (12), of the ultrasonic probe (11), a pre-pressure spring (37) is arranged between the pre-pressure block (36) and the ultrasonic probe (11), and the direction of the pre-pressure force applied to the ultrasonic probe (11) by the pre-pressure spring (37) is perpendicular to the axial line space of the mounting shaft (35) but does not intersect with the axial line space.
3. The ultrasonic blade root magnetic attachment detection device of claim 1, wherein: the guide rail (2) comprises a flexible rail body (21) which is attached to the surface of the blade, and clamping sleeves (22) which are used for clamping and fixing the edges of two sides of the blade to be measured are respectively arranged at two ends of the flexible rail body (21).
4. The ultrasonic blade root magnetic attachment detection device of claim 3, wherein: the flexible track body (21) adopts flexible chain, flexible chain includes a plurality of chain links (23) of series connection, adjacent two articulated connection between chain link (23), just chain link (23) are equipped with magnet piece (24) towards the one side at blade place surveyed.
5. The ultrasonic blade root magnetic attachment detection device of claim 4, wherein: the chain link is characterized in that a middle bolt sleeve (25) is arranged in the middle of one side of each chain link (23), edge bolt sleeves (26) are respectively arranged at two ends of the other side of each chain link (23), the distance between the two edge bolt sleeves (26) is larger than or equal to the distance between the middle bolt sleeves (25), the middle bolt sleeve (25) of one chain link (23) is positioned between the two edge bolt sleeves (26) of the other chain link (23), and bolts are arranged in the middle bolt sleeves (25) and the two edge bolt sleeves (26) to enable the two adjacent chain links (23) to be in running fit.
6. The ultrasonic blade root magnetic attachment detection device of claim 3, wherein: the flexible track body (21) comprises a flexible guide belt, and magnet blocks are arranged on one side, facing the measured blade, of the flexible guide belt at intervals.
7. The ultrasonic blade root magnetic attachment detection device of claim 3, wherein: the guide rail (2) is also provided with a positioning structure for positioning the position of the guide rail; the positioning structure comprises an installation block (27) arranged on the clamping sleeve (22), a positioning rod (28) in sliding fit with the installation block (27) is sleeved on the installation block (27), a positioning block (29) in positioning fit with the blade root of the blade to be measured is sleeved on the positioning rod (28), and locking screws (30) used for locking the positioning rod (28) are respectively arranged on the installation block (27) and the positioning block (29).
8. The ultrasonic blade root magnetic attachment detection device of claim 7, wherein: scales are arranged on the positioning rod (28).
9. The ultrasonic blade root magnetic attachment detection device of claim 1, wherein: remove automobile body (4) including automobile body seat (41), be equipped with on automobile body seat (41) with guide rail (2) sliding fit's spout (42) or be equipped with the sliding fit suit on automobile body seat (41) slide opening on guide rail (2), the both sides of automobile body seat (41) are equipped with magnetism gyro wheel (43) respectively.
10. The ultrasonic blade root magnetic attachment detection device of claim 9, wherein: be equipped with encoder mounting bracket (44) on automobile body seat (41), be equipped with encoder (45) on encoder mounting bracket (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023113374.4U CN214122115U (en) | 2020-12-22 | 2020-12-22 | Blade root magnetic adsorption ultrasonic detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023113374.4U CN214122115U (en) | 2020-12-22 | 2020-12-22 | Blade root magnetic adsorption ultrasonic detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214122115U true CN214122115U (en) | 2021-09-03 |
Family
ID=77513353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023113374.4U Expired - Fee Related CN214122115U (en) | 2020-12-22 | 2020-12-22 | Blade root magnetic adsorption ultrasonic detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214122115U (en) |
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2020
- 2020-12-22 CN CN202023113374.4U patent/CN214122115U/en not_active Expired - Fee Related
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Granted publication date: 20210903 |