CN213022987U - Ultrasonic detection scanning frame adopting diffraction time difference method - Google Patents
Ultrasonic detection scanning frame adopting diffraction time difference method Download PDFInfo
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- CN213022987U CN213022987U CN202022252698.XU CN202022252698U CN213022987U CN 213022987 U CN213022987 U CN 213022987U CN 202022252698 U CN202022252698 U CN 202022252698U CN 213022987 U CN213022987 U CN 213022987U
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- 238000001514 detection method Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000523 sample Substances 0.000 claims description 28
- 238000012360 testing method Methods 0.000 claims description 18
- 238000003466 welding Methods 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- -1 dirt Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a diffraction time difference method ultrasonic detection scanning frame, which is characterized by comprising a platform, wherein two sides of the platform are respectively movably connected with two connecting rod structures with telescopic lengths, each connecting rod structure is movably connected with a wedge block for diffraction time difference method ultrasonic detection, and an encoder is arranged on the platform; and a fastening structure for fastening and connecting the connecting rod structure and the wedge block is arranged between the connecting rod structure and the wedge block. The device of the utility model has simple structure, is portable and reliable, and is suitable for the ultrasonic detection of the special equipment butt welding seam with the thickness less than 50mm by the diffraction time difference method; the telescopic rod can rotate through the pin shaft, and the wedge block can also rotate through the bolt, so that the device is suitable for detection surfaces with different curvatures; the connecting point of the wedge and the first bracket is positioned at the front part of the wedge, so that the sound wave interruption propagation caused by the tilting of the front part of the wedge can be effectively prevented, and the detection is invalid.
Description
Technical Field
The utility model relates to a sweep and look into the frame, especially relate to a diffraction time difference method ultrasonic testing sweeps and looks into frame belongs to special equipment and detects technical field.
Background
In the field of special equipment detection, the ultrasonic detection by the diffraction time difference method is a novel ultrasonic detection technology, can effectively record welding line detection data, and is a traceable ultrasonic detection technology. According to the standard, the diffraction time difference method ultrasonic detection can be adopted to replace the ray detection, so that a large amount of ray protection work is avoided. Since the pressure vessels and pressure lines of a large number of special plants generally have a wall thickness of not more than 50 mm. The scanning frame for ultrasonic detection by the conventional diffraction time difference method is complex in structure and heavy, and cannot adapt to a curved surface.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: how to simplify the structure of the ultrasonic detection scanning frame by the diffraction time difference method, reduce the weight and adapt to the change of the curvature of the detection surface.
In order to solve the technical problem, the technical scheme of the utility model is to provide a diffraction time difference method ultrasonic testing scanning frame, which is characterized in that the scanning frame comprises a platform, two sides of the platform are respectively movably connected with two connecting rod structures with telescopic length, each connecting rod structure is movably connected with a wedge block for diffraction time difference method ultrasonic testing, and an encoder is arranged on the platform; and a fastening structure for fastening and connecting the connecting rod structure and the wedge block is arranged between the connecting rod structure and the wedge block.
Preferably, the connecting rod structure comprises a second support, one end of the second support is movably connected with one side of the platform, the other end of the second support is fixedly connected with one end of the first support through a telescopic rod, and the other end of the first support is movably connected with the wedge block.
Preferably, the second bracket and the first bracket are both in a door-shaped structure; one end of the second bracket is provided with two supporting points at the bottom of the door-shaped structure, and the two supporting points are movably connected with the platform through a pin shaft; the other end of the second bracket is the top of the door-shaped structure and is fixedly connected with one end of the telescopic rod; one end of the first bracket is the top of the door-shaped structure and is fixedly connected with the other end of the telescopic rod; the other end of the first support is two support points at the bottom of the door-shaped structure, and the two support points are movably connected with the wedge block through bolts.
Preferably, the telescopic link include female pole and son pole, the one end and the second support fixed connection of female pole, the other end of female pole and the one end telescopic connection of son pole, the other end and the first support fixed connection of son pole.
Preferably, scales are arranged on the sub rod and the mother rod.
Preferably, one end of the female rod, which is close to the male rod, is provided with a plurality of slots, and the outer side of the female rod, which is located at the plurality of slots, is provided with a quick-release clamp used for fastening or loosening the female rod and the male rod.
Preferably, the telescopic rod is a hollow tube through which the probe line passes, and the first bracket and the second bracket are both provided with holes through which the telescopic rod can pass and be fixed.
Preferably, the inclined plane of the wedge block is provided with a threaded round hole for mounting a detection probe.
Preferably, the bottom surface of the wedge block is attached to the surface of any workpiece to be measured.
Preferably, two jacks for connecting probe lines are arranged on the surface of the platform; a connector connected with a main machine of the detection instrument through a main cable is arranged on the side surface of the platform; the jack is connected with the connector.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the device of the utility model has simple structure, is portable and reliable, and is suitable for the ultrasonic detection of the special equipment butt welding seam with the thickness less than 50mm by the diffraction time difference method;
(2) the telescopic rod can rotate through the pin shaft, and the wedge block can also rotate through the bolt, so that the device is suitable for detection surfaces with different curvatures;
(3) the distance between the probes can be conveniently adjusted by adopting the telescopic rod and the quick-release clamp;
(4) the probe line passes through the middle of the rod and is arranged secretly, so that the probe line is not easy to damage due to bending and the like on a detection site;
(5) the connecting point of the wedge block and the first bracket is positioned at the front part of the wedge block, so that the sound wave interruption propagation caused by the tilting of the front part of the wedge block can be effectively prevented, and the detection is invalid;
(6) the utility model discloses the spare part of device passes through structural connection such as bolt, easily replaces and updates.
Drawings
FIG. 1 is a schematic diagram of a diffraction time difference ultrasonic testing scanning frame;
fig. 2 is a detection schematic diagram of a diffraction time difference method ultrasonic detection scanning frame.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Example 1
The utility model provides a diffraction time difference method ultrasonic testing sweeps and looks into frame, as shown in FIG. 1, it is including the platform 1 that is used for installing encoder 9 and integrated probe line joint, have scale and telescopic link 2 that length can change, fix the quick detach clip 3 of 2 lengths of telescopic link, a first support 4 for centre gripping voussoir 6, a bolt 5 for fixed voussoir 6, the voussoir 6 that changes probe incident angle, connect telescopic link 2 and platform 1's second support 7, connect second support 7 and platform 1's round pin axle 8, carry out the encoder 9 of location, connect the connector 10 of probe and detecting instrument host computer.
Two sides of the platform 1 are respectively movably connected with two connecting rod structures with telescopic lengths, each connecting rod structure is movably connected with one wedge block 6, and the platform 1 is provided with an encoder 9. And a fastening structure for fastening and connecting the connecting rod structure and the wedge block 6 is arranged between the connecting rod structure and the wedge block 6.
The connecting rod structure comprises a second support 7, one end of the second support 7 is movably connected with one side of the platform 1, the other end of the second support 7 is fixedly connected with one end of the first support 4 through the telescopic rod 2, and the other end of the first support 4 is movably connected with the wedge block 6.
The second bracket 7 and the first bracket 4 are both in a door-shaped structure; one end of the second bracket 7 is provided with two supporting points at the bottom of the door-shaped structure, and the two supporting points are movably connected with the platform 1 through a pin shaft 8; the other end of the second bracket 7 is the top of a door-shaped structure and is fixedly connected with one end of the telescopic rod 2; one end of the first bracket 4 is the top of the door-shaped structure and is fixedly connected with the other end of the telescopic rod 2; the other end of the first support 4 is two supporting points at the bottom of the door-shaped structure, and the two supporting points are movably connected with a wedge block 6 through bolts 5. The first support 4 and the second support 7 are both provided with holes for the telescopic rod 2 to pass through and fix.
The connecting point of the wedge 6 and the first bracket 4 is positioned in front of the wedge 6, so that the interruption and propagation of sound waves caused by the tilting of the front of the wedge 6 can be effectively prevented, and the detection is disabled.
When the wedge block mechanism is used, the connecting rod structure can rotate around the connecting part of the platform 1 and the connecting rod structure, and the wedge block 6 can rotate around the connecting part of the connecting rod structure and the wedge block 6; the straight line of the rotating shaft between the platform 1 and the connecting rod structure is parallel to the straight line of the rotating shaft between the connecting rod structure and the wedge block 6, so that the bottom surface of the wedge block 6 is attached to the surface of any workpiece to be tested. The incidence angle of the probe on the wedge 6 is changed by changing the angle of the wedge 6 on the workpiece.
Two C9 jacks are integrated on the surface of the platform 1 and are used for connecting probe lines. The side of the platform 1 is provided with a connector 10 which is connected with a detection instrument host through a main cable. At the internal C9 receptacle, the connector 10 is connected.
The telescopic link 2 comprises female pole and son pole, for the aluminum alloy cavity steel pipe that the probe line passed, has the screw thread in the one end processing of female pole for connect on second support 7, the other end of female pole and the one end telescopic connection of son pole, the other end and the 4 fixed connection of first support of son pole. Female pole is close to the one end of son pole and has 3 flutings, and the outside that lies in a plurality of flutings on the female pole adopts quick detach clip 3 to fix son pole here for fasten or loosen between female pole and the son pole, the present flexible length of restriction son pole. Scales are processed on the secondary rod and the primary rod and used for measuring the telescopic length. 2 length of telescopic link can make according to the measuring needs, and the length of recommending female pole and son pole is about 55 mm.
The quick-release clamp 3 is arranged on the female rod of the telescopic rod 2 and used for fixing the sub-rod of the telescopic rod 2.
The first support 4 is of a door-shaped structure, is connected with the sub-rod through threads, and is provided with a circular hole in the middle for a probe line to pass through.
The upper end of the bolt 5, which is connected with the first bracket 4, is provided with a thread, the bottom of the bolt is provided with no thread, and the bolt is used as a rotating shaft of the wedge block 6 after extending out of the first bracket 4.
The wedge 6 is a special wedge for ultrasonic detection by a diffraction time difference method, the refraction angle of the sound beam is 60-70 degrees, two round holes are processed on the side surface, and the size of the round holes is matched with that of the unthreaded part at the bottom of the bolt 5. And a threaded round hole is processed on the inclined plane and used for mounting a detection probe.
The second support 7 is a door-shaped support and is connected with the platform 1 through a pin shaft 8.
The material of the pin shaft 8 is 40Cr, and a gasket is additionally arranged during installation to connect the platform 1 with the second support 7, so that the second support 7 can rotate.
The encoder 9 outputs a rectangular wave in the form of output to the detection master, thereby recording the moving distance. The voltage is direct current 5V to 12V, the rising and falling time of the waveform is less than 2 mus, and the maximum allowable revolution is not less than 6000 rpm.
As shown in fig. 2, the working process of the present invention is as follows:
before the detection is started, substances such as dirt, grease and the like attached to the detection surface of the workpiece are removed. And calculating the probe spacing S (2) tan theta 2H/3 (theta is the incident angle of the sound beam, and H is the thickness of the workpiece) according to the thickness of the detected workpiece. The distance between the wedge blocks 6 is adjusted through the quick-release clamp buckles 3, and the lengths of the telescopic rods 2 on the two sides are kept consistent as much as possible. And (3) mounting the probe on the wedge block 6, connecting the probe line to the jack of the platform 1, and connecting the main cable and the main machine of the detection instrument. The distance calibration of the encoder 9 is started. And finally will the utility model discloses a scanning frame is placed on the testing surface of work piece, presses two telescopic links 2 with the one hand (make the second support 7 of 2 one ends of telescopic link rotate with platform 1's junction, the first support 4 of the 2 other ends of telescopic link rotates with the junction of voussoir 6) to make the 6 laminating testing surfaces of voussoir, begin to detect to being detected the object memorability at last.
In this embodiment, the object that needs to detect is the pressure vessel longitudinal weld of diameter 800mm, and thickness is 20mm, and telescopic link 2 is aluminum alloy hollow steel pipe, and female pipe diameter is 8mm, and wall thickness 1mm, and the diameter of sub-pole is 6mm, and wall thickness 1 mm. The sound beam incident angle that the voussoir matches is 70, processes threaded connection on platform 1 at female pole one end, and the other end has 3 flutings, adopts quick detach clip 3 to adjust and fixed telescopic link 2 for the probe interval is 73.3 mm. The ultrasonic detection probe is a diffraction time difference method ultrasonic detection probe with the diameter of 6mm and the frequency of 5 MHz. The encoder 9 adopts MES/H-20-P series encoder, and the output form is rectangular wave arrival detection host computer, so as to record the moving distance. The voltage is direct current 5V to 12V, the rising and falling time of the waveform is less than 2 mus, and the maximum allowable revolution is 6000 rpm. The whole detection process is very smooth, the operation is simple and convenient, the detection is interrupted without the problems of the front end of the probe tilting and the like, and the defect that 8 parts exceed the standard is found.
Example 2
In this example, the diameter of the object to be detected was 4m, and the thickness was 30 mm. The wedge 6 is matched to an incident angle of the sound beam of 60 degrees. The quick-release clamp 3 is adopted to adjust and fix the telescopic rod 2, so that the distance between the probes is 69.3 mm. The ultrasonic detection probe is a diffraction time difference method ultrasonic detection probe with the diameter of 6mm and the frequency of 5 MHz. The detection process is smooth, the operation is simple and convenient, the detection is interrupted without the problems of the front end of the probe tilting and the like, and the defect that 3 parts exceed the standard is found.
The rest is the same as in example 1.
Claims (10)
1. A diffraction time difference method ultrasonic detection scanning frame is characterized by comprising a platform (1), wherein two sides of the platform (1) are movably connected with two connecting rod structures with telescopic lengths respectively, each connecting rod structure is movably connected with a wedge block (6) for diffraction time difference method ultrasonic detection, and an encoder (9) is arranged on the platform (1); a fastening structure for fastening and connecting the connecting rod structure and the wedge block (6) is arranged between the connecting rod structure and the wedge block (6).
2. The ultrasonic testing scanning frame by the diffraction time difference method according to claim 1, wherein the connecting rod structure comprises a second bracket (7), one end of the second bracket (7) is movably connected with one side of the platform (1), the other end of the second bracket (7) is fixedly connected with one end of the first bracket (4) through a telescopic rod (2), and the other end of the first bracket (4) is movably connected with the wedge block (6).
3. The ultrasonic testing scanning frame of the diffraction time difference method according to claim 2, characterized in that the second support (7) and the first support (4) are both in a door-shaped structure; one end of the second bracket (7) is provided with two supporting points at the bottom of the door-shaped structure, and the two supporting points are movably connected with the platform (1) through a pin shaft (8); the other end of the second bracket (7) is the top of a door-shaped structure and is fixedly connected with one end of the telescopic rod (2); one end of the first bracket (4) is the top of a door-shaped structure and is fixedly connected with the other end of the telescopic rod (2); the other end of the first bracket (4) is provided with two support points at the bottom of the door-shaped structure, and the two support points are movably connected with the wedge block (6) through bolts (5).
4. The ultrasonic testing scanning frame by the diffraction time difference method as claimed in claim 2, wherein the telescopic rod (2) comprises a female rod and a sub rod, one end of the female rod is fixedly connected with the second bracket (7), the other end of the female rod is telescopically connected with one end of the sub rod, and the other end of the sub rod is fixedly connected with the first bracket (4).
5. The ultrasonic testing scanning frame according to claim 4, wherein the sub-rod and the main rod are provided with scales.
6. The ultrasonic testing scanning frame by the diffraction time difference method as claimed in claim 4, wherein one end of the female rod close to the male rod is provided with a plurality of slots, and the female rod is provided with quick-release clips (3) which are arranged outside the slots and used for fastening or loosening the female rod and the male rod.
7. The ultrasonic testing scanning frame by the diffraction time difference method as claimed in claim 2, characterized in that the telescopic rod (2) is a hollow tube through which a probe line passes, and the first bracket (4) and the second bracket (7) are provided with holes through which the telescopic rod (2) can pass and be fixed.
8. The ultrasonic testing scanning frame by the diffraction time difference method as claimed in claim 1, characterized in that the inclined plane of the wedge block (6) is provided with a threaded round hole for mounting a testing probe.
9. The ultrasonic testing scanning frame by the diffraction time difference method as claimed in claim 1, characterized in that the bottom surface of the wedge block (6) is attached to the surface of any workpiece to be tested.
10. The ultrasonic testing scanning frame by the diffraction time difference method as claimed in claim 1, characterized in that the surface of the platform (1) is provided with two jacks for connecting probe lines; a connector (10) connected with a detection instrument host through a main cable is arranged on the side surface of the platform (1); the jack is connected with a connector (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022252698.XU CN213022987U (en) | 2020-10-12 | 2020-10-12 | Ultrasonic detection scanning frame adopting diffraction time difference method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022252698.XU CN213022987U (en) | 2020-10-12 | 2020-10-12 | Ultrasonic detection scanning frame adopting diffraction time difference method |
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| CN213022987U true CN213022987U (en) | 2021-04-20 |
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| CN202022252698.XU Expired - Fee Related CN213022987U (en) | 2020-10-12 | 2020-10-12 | Ultrasonic detection scanning frame adopting diffraction time difference method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567563A (en) * | 2021-07-23 | 2021-10-29 | 安徽理工大学 | TOFD nondestructive testing system |
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- 2020-10-12 CN CN202022252698.XU patent/CN213022987U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567563A (en) * | 2021-07-23 | 2021-10-29 | 安徽理工大学 | TOFD nondestructive testing system |
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Granted publication date: 20210420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |