Probe scanning device for ultrasonic testing

Abstract

The utility model relates to a kind of probe scanning device for ultrasonic testing, including lifting frame and annular base: the annular base with gap is set in the outside of the weld of industrial pipeline to be detected by lifting frame, the gap of annular base is passed through pipeline, radial adjusting arm is connected with annular base by gear ring, extension rod is driven out open mouth to drive probe and pipeline surface closely, the slight camber or unevenness of spring's elastic effect can adapt to pipeline surface, ensure that probe and pipeline always keep good coupling state. Circumferential driving mechanism is started to drive gear ring to rotate along the embedding slot of annular base, since gear ring is fixedly connected with radial adjusting arm, radial adjusting arm will rotate around pipeline circumferentially synchronously with gear ring, radial adjusting arm drives cylindrical shell, extension rod and ultrasonic probe to move along pipeline circumference, realize circumferential scanning to weld, ensure that ultrasonic probe 360 degree rotation complete coverage, solve the problem of traditional annular scanning blind area.

Description

Technical Field

[0001] This utility model relates to the field of non-destructive testing technology, specifically to a probe scanning device for ultrasonic testing. Background Technology

[0002] Ultrasonic testing technology, as an important method of non-destructive testing, plays a crucial role in the safe operation and regular maintenance of industrial pipeline systems. By utilizing the propagation and reflection of high-frequency sound waves within materials, ultrasonic testing can effectively detect internal damage such as pipe wall thinning, corrosion defects, and cracks, providing critical data support for preventing leaks and ensuring production safety. However, traditional ultrasonic testing ring scanning mechanisms often achieve circumferential testing through overall rotation, but the equipment's structure is prone to interference with the pipe's outer wall, resulting in incomplete coverage of certain areas. Utility Model Content

[0003] The main purpose of this invention is to provide a probe scanning device for ultrasonic testing, in order to solve the problem that traditional ring scanning mechanisms in the prior art mostly achieve circumferential testing by rotating the whole, but the structure of the device itself is prone to interference with the outer wall of the pipe, resulting in incomplete detection coverage of the weld end or local area.

[0004] To achieve the above objectives, this utility model provides a scanning device for an ultrasonic testing probe, comprising a lifting frame and an annular base:

[0005] An embedding groove is opened on the outer ring wall of the annular base and is fixedly connected to the lifting frame. A toothed ring is rotated on the embedding groove. A radial adjusting arm is fixedly installed on one side wall of the toothed ring and connected to a circumferential drive mechanism for driving it to rotate along the embedding groove.

[0006] Both the annular base and the gear ring have notches;

[0007] A columnar shell is fixed at the end of the radial adjusting arm away from the gear ring, and one end of the columnar shell arranged radially along the gear ring has an opening;

[0008] A spring is fixedly installed on the inner bottom wall of the cylindrical shell. An extension rod is fixed to the free end of the spring. One end of the extension rod is slidably installed on the cylindrical shell, and the other end protrudes through the opening to install an ultrasonic probe that can contact the industrial pipeline.

[0009] A preferred embodiment is that the circumferential drive mechanism includes a first motor and a chain;

[0010] Two connecting plates are symmetrically fixed on the side wall of the annular base away from the radial adjustment arm, and a rotating shaft is inserted through each connecting plate;

[0011] Driven gears and sprockets are fixedly mounted at both ends of the shaft, with the two driven gears meshing with the gear ring and chains mounted on the two sprockets.

[0012] The base of the first motor is fixedly connected to the lifting frame, and the output shaft is coaxially connected to any rotating shaft.

[0013] A preferred embodiment is that both driven gears and the gear ring are spur gears.

[0014] A preferred embodiment is that the radial adjusting arm includes a crossbar, a vertical bar, and a support plate;

[0015] One end of the crossbar is fixedly connected to the side wall of the annular base, and the other end is provided with a receiving through hole. The vertical bar is slidably inserted into the receiving through hole. A threaded hole is provided on the crossbar, and a bolt is screwed into the threaded hole. The bolt abuts against the vertical bar. The vertical bar is arranged radially along the toothed ring, and one end is fixedly connected to one end of the support plate. A columnar shell is fixedly installed at the other end of the support plate.

[0016] A preferred embodiment is that three sets of radial adjustment arms are arranged around the circumference of the annular base, and the three sets of radial adjustment arms are respectively the first radial adjustment arm, the second radial adjustment arm and the third radial adjustment arm;

[0017] An ultrasonic probe is mounted on the first radial adjustment arm;

[0018] A brush is installed at the end of the second radial adjustment arm away from the annular base;

[0019] The support plate on the third radial adjusting arm is equipped with a spray gun for spraying coupling fluid.

[0020] A preferred embodiment is that strip-shaped grooves are formed on both sides of the cylindrical shell along its axial direction, and two guide rods are coaxially fixed on the extension rod. The two guide rods correspond one-to-one with the two strip-shaped grooves, and the guide rods are inserted into the strip-shaped grooves.

[0021] A preferred embodiment is that the lifting frame includes a housing and a connecting arm. A slide rod is fixedly installed inside the housing, and a lead screw is rotatably installed. The lead screw is installed vertically and parallel to the slide rod inside the housing, and a lifting block is screwed onto it. The lifting block is slidably installed on the slide rod. A through slot is opened in the housing along its height direction. One end of the connecting arm is fixedly connected to the lifting block, and the other end passes through the through slot and is fixedly connected to the side wall of the base of the first motor and the annular base.

[0022] A lead screw connection is used to drive the rotation of the moving parts.

[0023] A preferred embodiment is that the ultrasonic testing probe scanning device also includes a mobile carriage, with the bottom of the housing fixedly mounted on the mobile carriage;

[0024] The driving component is a second motor, whose base is fixedly mounted on the moving vehicle, and whose output shaft is coaxially connected with the lead screw.

[0025] The beneficial effects of the above scheme are:

[0026] A notched annular base is positioned directly beneath the industrial pipeline to be inspected via a lifting frame. Driving the lifting frame allows the notch in the annular base to pass through the pipeline. The ultrasonic probe is mounted inside a cylindrical shell via an extension rod and a spring. With the spring in a free state, the extension rod extends out of the opening, causing the ultrasonic probe to fit tightly against the pipeline surface. The spring's elasticity accommodates slight curvature or unevenness on the pipeline surface, ensuring good coupling between the probe and the pipeline at all times. The circumferential drive mechanism activates, causing a gear ring to rotate along the groove of the annular base. Since the gear ring is fixedly connected to a radial adjustment arm, the radial adjustment arm rotates synchronously around the pipeline circumferentially with the gear ring. The radial adjustment arm drives the cylindrical shell, extension rod, and ultrasonic probe to move circumferentially along the pipeline, achieving circumferential scanning. During scanning, if there are local protrusions or depressions on the pipeline surface, the spring automatically extends or retracts, pushing the extension rod to adjust the position of the ultrasonic probe, ensuring that the ultrasonic probe always fits the pipeline surface and avoiding blind spots caused by changes in the pipeline's shape. The notch design of the annular base and gear ring, along with the radially arranged probe mechanism, allows the device to avoid interference from the outer wall of the pipe during rotation. Combined with the spring telescopic structure, it ensures complete coverage of the ultrasonic probe's 360-degree rotation, solving the blind zone problem of traditional annular scanning. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 yes Figure 1 Enlarged structural diagram of region A in the middle;

[0030] Figure 3 This is a front view structural diagram of the present invention;

[0031] Figure 4 This is a partial cross-sectional view of the structure of this utility model;

[0032] Figure 5 This is a partial cross-sectional view of the structure of this utility model. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0034] like Figures 1-5 As shown, this embodiment provides a scanning device for an ultrasonic testing probe, including a lifting frame 10 and an annular base 20, as... Figure 2 As shown, an embedded groove 21 is formed on the outer circumference of the annular base 20, and the annular base 20 is fixedly connected to the lifting frame 10. A gear ring 22 is rotatably mounted on the embedded groove 21. A radial adjusting arm 30 is fixedly mounted on one side wall of the gear ring 22, and the gear ring 22 is connected to a circumferential drive mechanism 40 for driving it to rotate along the embedded groove 21. The circumferential drive mechanism 40 includes a first motor 41 and a chain 42. Two connecting plates 43 are symmetrically fixed on the side wall of the annular base 20 away from the radial adjusting arm 30, and a rotating shaft 44 is rotatably mounted through each connecting plate 43. Driven gears 45 and sprockets 46 are respectively fixedly mounted at both ends of the rotating shaft 44. The two driven gears 45 mesh with the gear ring 22, and the chains 42 are mounted on the two sprockets 46. The base of the first motor 41 is fixedly connected to the lifting frame 10, and the output shaft of the first motor 41 is coaxially connected to either rotating shaft 44. The first motor 41 operates, driving a rotating shaft 44 to rotate. The rotating shaft 44 drives the driven gear 45 and sprocket 46 on it to rotate. A chain 42 is sleeved on the two sprockets 46, causing the two sprockets 46 to rotate synchronously, thereby rotating the two driven gears 45. The two driven gears 45 drive the gear ring 22 to rotate. Both the two driven gears 45 and the gear ring 22 are spur gears. Both the annular base 20 and the gear ring 22 have notches 23. The radial adjusting arm 30 includes a horizontal bar 32, a vertical bar 33, and a support plate 34. One end of the horizontal bar 32 is fixedly connected to the side wall of the annular base 20, and the other end of the horizontal bar 32 has a receiving through hole 320. The vertical bar 33 is slidably inserted into the receiving through hole 320. A threaded hole (not shown) is opened on the horizontal bar 32, and a bolt 35 is screwed into the threaded hole. The bolt 35 abuts against the vertical bar 33. The vertical bar 33 is arranged radially along the gear ring 22, and one end of the vertical bar 33 is fixedly connected to one end of the support plate 34. Figure 5 As shown, a columnar shell 31 is fixedly mounted on the other end of the support plate 34. The bolt 35 abuts against the vertical rod 33, allowing adjustment of the axial distance between the ultrasonic probe 1 and the annular base 20, thus adapting to industrial pipes of different diameters. One end of the columnar shell 31, arranged radially along the gear ring 22, has an opening (not shown). A spring 37 is fixedly mounted on the inner bottom wall of the columnar shell 31. An extension rod 38 is fixedly mounted on the free end of the spring 37. One end of the extension rod 38 is slidably mounted on the columnar shell 31, and the other end of the extension rod 38 protrudes through the opening to mount the ultrasonic probe 1, which can contact the industrial pipe. The ultrasonic probe 1 uses existing technology and will not be described in detail. Models such as Olympus M3104, GEUSM-2000S, Sonatest N35F2, Panametrics V110-RB, Olympus Epoch, and GE Krautkramer USN60 can be selected. Figure 5As shown, both sides of the cylindrical shell 31 have strip-shaped grooves 310 along their axial direction. Two guide rods 36 are coaxially fixed on the extension rod 38, with each guide rod 36 corresponding to one of the two strip-shaped grooves 310, and the guide rods 36 are inserted into the strip-shaped grooves 310. The guide rods 36 inserted into the strip-shaped grooves 310 can guide the extension rod 38.

[0035] like Figure 2 As shown, the annular base 20 with a notch 23 is positioned directly below the industrial pipeline to be inspected via the lifting frame 10. The lifting frame 10 is driven to work, so that the annular base 20 and the notch 23 of the toothed ring pass through the pipeline, and the three are coaxially arranged. The ultrasonic probe 1 is installed in the cylindrical shell 31 via the extension rod 38 and the spring 37. In the initial state, the spring 37 is in a free state, and the extension rod 38 extends out of the opening to drive the ultrasonic probe 1 to fit tightly against the surface of the pipeline. The elastic effect of the spring 37 can adapt to the slight curvature or unevenness of the pipeline surface, ensuring that the probe and the pipeline always maintain a good coupling state. The circumferential drive mechanism 40 starts, driving the gear ring 22 to rotate along the embedded groove 21 of the annular base 20. Since the gear ring 22 is fixedly connected to the radial adjustment arm 30, the radial adjustment arm 30 will rotate synchronously with the gear ring 22 around the circumference of the pipe. The radial adjustment arm 30 drives the cylindrical shell 31, the extension rod 38, and the ultrasonic probe 1 to move around the circumference of the pipe, realizing circumferential scanning of the pipe. During the scanning process, if there are local protrusions or depressions on the pipe surface, the spring 37 will automatically extend and retract, pushing the extension rod 38 to adjust the position of the ultrasonic probe, ensuring that the ultrasonic probe is always in contact with the pipe surface, avoiding blind spots caused by changes in the pipe shape. When the device rotates, it avoids interference from the outer wall of the pipe. With the spring extension and retraction structure, it ensures that the ultrasonic probe rotates 360 degrees to fully cover the area, solving the blind spot problem of traditional annular scanning. Furthermore, it should be noted that when the notch of the gear ring rotates to one driven gear, the other driven gear is in a meshing state with the gear ring, which ensures that the gear ring continues to rotate.

[0036] like Figure 2 , Figure 5As shown, three sets of radial adjustment arms 30 are arranged around the circumference of the annular base 20. These three sets of radial adjustment arms 30 are designated as the first radial adjustment arm, the second radial adjustment arm, and the third radial adjustment arm. An ultrasonic probe 1 is mounted on the first radial adjustment arm. A brush 2 is mounted on the end of the second radial adjustment arm furthest from the annular base 20. A spray gun 3 for spraying coupling fluid is mounted on the support plate 34 of the third radial adjustment arm. The annular base 20 is fitted onto the pipeline area via a lifting frame 10, and the three sets of radial adjustment arms 30 are evenly spaced along the circumference of the gear ring 22. The ultrasonic probe 1 is mounted on the first radial adjustment arm, the brush 2 is mounted on the second radial adjustment arm, and the coupling fluid spray gun 3 is fixed on the third radial adjustment arm. When the circumferential drive mechanism 40 is activated, the gear ring 22 drives the three sets of radial adjustment arms 30 to rotate synchronously. The brush 2 of the second radial adjustment arm contacts the pipeline surface first. During rotation, the brush 2 scrapes away rust, oil, and impurities near the pipeline weld, ensuring the inspection area is clean. The coupling fluid is precisely sprayed. As the gear ring 22 rotates, the spray gun 3 of the third radial adjustment arm reaches the area cleaned by the brush 2. The spray gun 3 is fixed by the support plate 34 and sprays the coupling fluid at an angle toward the pipe surface to eliminate the air gap for ultrasonic transmission. The ultrasonic probe 1 works closely following the spray gun 3 on the cleaned and coupled surface. The extension rod 38 adapts to the undulations of the pipe surface under the action of the spring 37.

[0037] like Figure 4 As shown, the lifting frame 10 includes a housing 11 and a connecting arm 12. A slide rod 13 is fixedly installed inside the housing 11, and a lead screw 14 is rotatably installed. The lead screw 14 is vertically installed parallel to the slide rod 13 inside the housing 11, and a lifting block 15 is screwed onto it. The lifting block 15 is slidably fitted onto the slide rod 13. A through slot 110 is opened along the height direction of the housing 11. One end of the connecting arm 12 is fixedly connected to the lifting block 15, and the other end passes through the through slot 110 and is fixedly connected to the base of the first motor 41 and the side wall of the annular base 20. The lead screw 14 is connected to a drive component (not shown) for driving its rotation. The ultrasonic testing probe scanning device also includes a moving carriage 4, and the bottom end of the housing 11 is fixedly installed on the moving carriage 4. The drive component is a second motor, the base of which is fixedly installed on the moving carriage 4, and the output shaft of the second motor is coaxially connected to the lead screw 14. The second motor drives the lead screw 14 to rotate, and the lead screw 14 drives the lifting block 15 to move up and down. The lifting block 15 drives the ring base 20 to move up and down through the connecting arm 12.

[0038] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. An ultrasonic testing probe scanning apparatus comprising a lifting frame, characterized by, Also includes: An annular base, wherein an embedding groove is formed on the outer circumference of the annular base and is fixedly connected to the lifting frame, and a toothed ring is rotatably provided on the embedding groove; A radial adjusting arm is fixed to one side wall of the gear ring and connected to a circumferential drive mechanism for driving its rotation. Both the annular base and the gear ring have notches; A columnar shell is fixed at one end of the radial adjusting arm away from the gear ring, and one end of the columnar shell arranged radially along the gear ring has an opening. A spring is fixed to the inner bottom wall of the cylindrical shell, and an extension rod is fixed to the free end of the spring. One end of the extension rod slides inside the cylindrical shell, and the other end protrudes through the opening to install an ultrasonic probe that can contact the pipe.

2. The probe scanning apparatus for ultrasonic testing according to claim 1, characterized by The circumferential drive mechanism includes a first motor and a chain; Two connecting plates are symmetrically fixed on one side wall of the annular base away from the radial adjusting arm, and each connecting plate is rotatably mounted with a rotating shaft passing through it. Driven gears and sprockets are fixedly mounted at both ends of the rotating shaft, the two driven gears mesh with the gear ring, and the chain is mounted on the two sprockets; The base of the first motor is fixedly connected to the lifting frame, and the output shaft is coaxially connected to any of the rotating shafts.

3. The probe scanning apparatus for ultrasonic testing according to claim 2, characterized by Both driven gears and the gear ring are spur gears.

4. The probe scanning apparatus for ultrasonic testing according to claim 1, characterized by The radial adjusting arm includes a crossbar, a vertical bar, and a support plate; One end of the crossbar is fixedly connected to the side wall of the annular base, and the other end has a receiving through hole. The vertical rod is slidably inserted into the receiving through hole. A threaded hole is opened on the crossbar, and a bolt is screwed into the threaded hole. The bolt abuts against the vertical rod. The vertical rod is arranged radially along the toothed ring, and one end is fixedly connected to one end of the support plate. The columnar shell is fixedly installed at the other end of the support plate.

5. The ultrasonic testing probe scanning device according to claim 4, characterized in that, The radial adjustment arms are arranged in three groups around the circumference of the annular base, and the three groups of radial adjustment arms are respectively the first radial adjustment arm, the second radial adjustment arm and the third radial adjustment arm; The ultrasonic probe is mounted on the first radial adjustment arm; A brush is mounted on the end of the second radial adjusting arm away from the annular base; The support plate on the third radial adjusting arm is equipped with a spray gun for spraying coupling fluid.

6. The ultrasonic testing probe scanning device according to claim 1, characterized in that, The cylindrical shell has strip-shaped grooves on both sides along its axial direction. Two guide rods are coaxially fixed on the extension rod, and the two guide rods correspond one-to-one with the two strip-shaped grooves. The guide rods are inserted into the strip-shaped grooves.

7. The ultrasonic testing probe scanning device according to claim 2, characterized in that, The lifting frame includes a housing and a connecting arm. A sliding rod is fixed inside the housing, and a lead screw is rotatably mounted thereon. The lead screw and the slide rod are arranged vertically and parallel to each other in the housing, and a lifting block is screwed on them. The lifting block is slidably sleeved on the slide rod. The housing has a through groove along its height direction. One end of the connecting arm is fixedly connected to the lifting block, and the other end passes through the through groove and is fixedly connected to the base of the first motor and the side wall of the annular base. The lead screw is connected to a drive component for rotating it.

8. The ultrasonic testing probe scanning device according to claim 7, characterized in that, It also includes a mobile vehicle, the bottom of which is fixed to the mobile vehicle; The driving component is a second motor, the base of which is fixed on the moving vehicle, and the output shaft is coaxially connected to the lead screw.

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