On-demand self-position-adjusting ultrasonic detection device for internal defects of steel pipe welding seam
By combining a water-collecting base with multiple mechanisms, the problems of low efficiency and poor stability of steel pipe weld inspection devices are solved, achieving efficient and accurate detection of internal defects in steel pipe welds.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEILONGJIANG COLDLAND CONSTR ENG QUALITY INSPECTION CENT CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-24
AI Technical Summary
Existing steel pipe weld inspection devices are inefficient, cannot achieve full coverage scanning, have a high rate of false detections due to manual interpretation, have unstable support frames that are inconvenient to adjust, and are prone to jamming or becoming uneven when rotating steel pipes, resulting in poor stability.
The system employs a combination of a water-collecting base, anti-slip support, adjustable slide rail mechanism, lower placement frame, guide adjustment cylinder, drive upper limiting frame, electric push rod, two-axis adjustment mechanism, and ultrasonic testing mechanism to achieve stable support, position adjustment, and testing of steel pipes.
It improves detection efficiency, achieves full coverage scanning of internal defects in steel pipe welds, reduces false detection rate, ensures stable support and smooth rotation of steel pipes, and improves detection accuracy and safety.
Smart Images
Figure CN224163622U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of steel pipe weld inspection technology, specifically relating to an on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds. Background Technology
[0002] Ultrasonic testing, abbreviated as UT, is also called ultrasonic testing or ultrasonic flaw detection. It is a non-destructive testing method that uses the differences in acoustic properties of materials and their defects to examine the energy changes of ultrasonic wave propagation waveform reflection and penetration time. It is one of the five conventional non-destructive testing methods.
[0003] After welding, existing steel pipes require inspection for internal defects. However, existing inspection devices have the following problems when in use:
[0004] I. Traditional single-probe UT inspection is inefficient and cannot achieve full coverage scanning, which makes it unsuitable for inspecting steel pipe welds. Moreover, manual interpretation relies on experience, resulting in a high rate of missed detection for minute defects (<1mm).
[0005] Second, when it is necessary to inspect the internal defects of the welds of existing steel pipes, the steel pipes need to be placed using a support frame. However, the existing support frame cannot provide stable support for the steel pipes, and it is inconvenient to adjust the position of the support during support, which makes it inconvenient to adjust during inspection and also results in low accuracy.
[0006] Third, during the testing of existing steel pipes, the steel pipes may jam or rotate unevenly when rotated. At the same time, the steel pipes may exhibit poor stability when rotating, resulting in the steel pipes failing to obtain the intended stable support. Utility Model Content
[0007] To address the problems mentioned in the background section, the purpose of this invention is to provide an on-demand, self-adjusting ultrasonic testing device for internal defects in steel pipe welds.
[0008] This utility model discloses an on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds, comprising a water-collecting base, anti-slip support seats, an adjustable slide rail mechanism, a lower placement frame, a guide adjustment cylinder, a drive upper limiting frame, an electric push rod, a two-axis adjustment mechanism, and an ultrasonic testing mechanism. Anti-slip support seats are fixedly installed on both sides of the bottom of the water-collecting base. Adjustable slide rail mechanisms are fixedly installed on the front and rear sides of the water-collecting base. Lower placement frames are fixedly installed on the left and right sliding positions of the adjustable slide rail mechanism. Guide adjustment cylinders are provided on the front and rear sides of the lower placement frame. The guide adjustment cylinders are fixedly installed on the front and rear sides of the left and right sliding positions of the adjustable slide rail mechanism. The upper ends of the rods of the two guide adjustment cylinders are respectively connected to the front and rear sides of the drive upper limiting frame. An electric push rod is fixedly installed on the middle sliding position of the adjustable slide rail mechanism. A two-axis adjustment mechanism is fixedly installed on the upper end of the electric push rod. The ultrasonic testing mechanism is fixedly installed at the front end of the two-axis adjustment mechanism.
[0009] As a preferred embodiment: the water-collecting base includes a base plate and a water-blocking frame; the water-blocking frame is welded to the upper end face of the base plate, the water-blocking frame is sealed to the base plate, a water-collecting trough is provided on the upper end face of the base plate, a drainage hole is provided in the middle of the water-collecting trough, the water-collecting trough is located inside the water-blocking frame, and several fixing threaded holes are provided on both the front and rear sides of the upper end face of the base plate.
[0010] As a preferred embodiment, the bottom of the anti-slip support is fixedly equipped with an anti-slip pad, and the bottom of the anti-slip pad has a concave anti-slip groove.
[0011] As a preferred embodiment: the adjustable slide rail mechanism includes a slide rail, a slider, a mounting plate, a locking plate, and a locking bolt; three sliders are movably connected to each of the two slide rails, and the upper surfaces of the three corresponding sliders on the front and rear of the two slide rails are fixedly mounted with mounting plates to form three sliding positions; a locking plate is fixedly mounted on the front end of the mounting plate, and a locking bolt is threadedly connected to the locking plate, with the head of the locking bolt contacting the front end face of the water collection base.
[0012] As a preferred embodiment: the lower placement frame includes a placement block and a placement roller; the upper end face of the placement block is provided with a concave V-shaped groove, and both ends of the V-shaped groove are provided with concave mounting grooves, through which the placement roller passes via a rotating shaft.
[0013] As a preferred embodiment: the guide-type regulating cylinder includes an regulating cylinder, a guide block, a guide rod, and a fixing block; the upper end face of the rod of the regulating cylinder is fixedly connected to the bottom of the fixing block, and guide blocks are symmetrically fixedly installed on both upper ends of the regulating cylinder. Guide holes are opened on the guide blocks, and the guide rods are movably connected in the guide holes of the guide blocks. The upper ends of the two guide rods are fixedly connected to the bottom of the fixing block.
[0014] As a preferred embodiment, the bottom of the regulating cylinder is welded to a cylinder base, and the cylinder base is provided with several through holes evenly spaced.
[0015] As a preferred embodiment: the drive-type upper limiting frame includes an upper limiting block, a drive roller, a drive motor, a pulley, and a belt; the bottom of the upper limiting block has a concave inverted V-shaped groove, and the two end faces of the inverted V-shaped groove have concave mounting grooves. The drive roller is mounted in the mounting groove via a rotating shaft. One end of the rotating shaft of the drive roller extends out of the upper limiting block, and a pulley is fixedly mounted on the outer end of the rotating shaft of the drive roller. The upper limiting block has a concave mounting hole, and the drive motor is mounted in the mounting hole via bolts. A pulley is mounted on the rotating shaft of the drive motor via bolts, and the three pulleys are connected by a belt.
[0016] As a preferred embodiment: the dual-axis adjustment mechanism includes a lower seat, an upper slide, a T-shaped slide, a slide fixing bolt, a fixing seat, an adjusting bolt, a bearing, a connecting block, and a stabilizing rod; the upper end face of the lower seat has a concave T-shaped groove, the bottom of the upper slide is integrally connected to the T-shaped slide, the T-shaped slide is movably connected in the T-shaped groove, the upper slide is connected to the slide fixing bolt, the head of the slide fixing bolt contacts the T-shaped groove of the T-shaped slide, the front end face of the upper slide is fixedly installed with a fixing seat, the middle of the fixing seat is threadedly connected to the adjusting bolt, the bottom of the adjusting bolt is integrally connected to a round shaft, the round shaft is fixedly installed with a bearing by a shaft retainer, the bearing is fixedly installed in the hole groove of the connecting block by a hole retainer, the front and rear sides of the fixing seat are movably connected to stabilizing rods, the bottom of the connecting block and the bottom of the two stabilizing rods are fixedly installed on the upper end face of the ultrasonic testing mechanism.
[0017] As a preferred embodiment: the ultrasonic testing mechanism includes a testing module, a laser rangefinder, a phased array probe and a TOFD probe pair, and a water spray mechanism; a mounting groove is provided in the bottom center of the testing module, and the phased array probe and the TOFD probe pair are installed in the mounting groove by bolts; a water spray mechanism is provided on the outside of the phased array probe and the TOFD probe pair, and the water spray mechanism is fixedly installed on the testing module; laser rangefinders are fixedly installed on both sides of the bottom of the testing module.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] This utility model utilizes the coordinated operation of a water-collecting base, an anti-slip support, an adjustable slide rail mechanism, a lower placement frame, a guide-type adjusting cylinder, a drive-type upper limiting frame, an electric push rod, a two-axis adjusting mechanism, and an ultrasonic testing mechanism to achieve the placement, clamping, and driving of the steel pipe. It allows for the repositioning of the steel pipe as needed, facilitating the detection of internal defects in the steel pipe welds. During use, it allows for easy adjustment to the corresponding position according to specific requirements, improving testing efficiency. Specific advantages include:
[0020] I. The water-collecting base of this utility model can be supported by an anti-slip support seat, while simultaneously collecting and draining water, thus making reasonable use of energy.
[0021] Second, the adjustable slide rail mechanism of this utility model can quickly adjust the position and fix it, which facilitates the adjustment of the fixed position of the steel pipe and the adjustment of the weld inspection position, and can save adjustment time.
[0022] Third, this utility model uses a lower placement frame and a drive-type upper limiting frame to fix the steel pipe, and at the same time uses a drive-type upper limiting frame to drive the steel pipe, so that the steel pipe can rotate, which facilitates the detection of internal defects in the weld.
[0023] Fourth, this utility model uses a two-axis adjustment mechanism to adjust the front and rear detection positions of the ultrasonic testing mechanism, which facilitates rapid fine-tuning and improves accuracy.
[0024] Fifth, this utility model uses an ultrasonic testing mechanism to detect internal defects in steel pipe welds, while also enabling the detection distance to be adjusted to prevent the ultrasonic testing mechanism from impacting the steel pipe, thus improving safe operation. Attached Figure Description
[0025] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.
[0026] Figure 1 This is a schematic diagram of the structure of this utility model;
[0027] Figure 2 This is a schematic diagram of the water collection base in this utility model;
[0028] Figure 3 This is a bottom view of the anti-slip support base in this utility model;
[0029] Figure 4 This is a right view of the adjustable slide rail mechanism in this utility model;
[0030] Figure 5 This is a schematic diagram of the lower placement rack in this utility model;
[0031] Figure 6 This is a front view of the lower placement rack in this utility model;
[0032] Figure 7 This is a structural schematic diagram of the lower placement frame, the guide-type adjusting cylinder, and the drive-type upper limiting frame in this utility model;
[0033] Figure 8 This is a schematic diagram of the structure of the guide-type regulating cylinder in this utility model;
[0034] Figure 9This is a schematic diagram of the drive-type upper limiting frame in this utility model;
[0035] Figure 10 This is a schematic diagram of the two-axis adjustment mechanism in this utility model;
[0036] Figure 11 This is a schematic diagram of the ultrasonic testing mechanism in this utility model.
[0037] In the diagram: 1-Water collection base; 2-Anti-slip support seat; 3-Adjustable slide rail mechanism; 4-Lower placement frame; 5-Guide adjustment cylinder; 6-Drive-type upper limiting frame; 7-Electric push rod; 8-Two-axis adjustment mechanism; 9-Ultrasonic testing mechanism; 10-Steel pipe;
[0038] 1-1-Base plate; 1-2-Water retaining frame;
[0039] 1-11-Water collection tank; 1-12-Drain hole; 1-13-Fixing threaded hole;
[0040] 2-1-Anti-slip mat; 2-2-Anti-slip groove;
[0041] 3-1-Slide rail; 3-2-Slider; 3-3-Mounting plate; 3-4-Locking plate; 3-5-Locking bolt;
[0042] 4-1-Placement block; 4-2-Placement roller;
[0043] 4-11-V-groove;
[0044] 5-1-Adjusting cylinder; 5-2-Guide block; 5-3-Guide rod; 5-4-Fixing block;
[0045] 5-11-Cylinder base;
[0046] 6-1-Upper limiting block; 6-2-Drive roller; 6-3-Drive motor; 6-4-Pulley; 6-5-Belt;
[0047] 8-1 Lower seat; 8-2 Upper slide; 8-3 T-shaped slide; 8-4 Slide fixing bolt; 8-5 Fixing seat; 8-6 Adjusting bolt; 8-7 Bearing; 8-8 Connecting block; 8-9 Stabilizer bar;
[0048] 8-11-T-type groove;
[0049] 9-1 Detection module; 9-2 Laser rangefinder; 9-3 Phased array probe and TOFD probe pair; 9-4 Water spray mechanism. Detailed Implementation
[0050] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. The structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0051] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.
[0052] Specific implementation method one: Combining Figure 1 The illustration describes this specific embodiment. This embodiment uses a water-collecting base 1 to collect water, facilitating the rational use of energy. Simultaneously, an adjustable slide rail mechanism 3 is used to adjust the fixed and detection positions. The specific technical solution includes: a water-collecting base 1, anti-slip support seats 2, an adjustable slide rail mechanism 3, a lower placement frame 4, a guide-type adjusting cylinder 5, a drive-type upper limiting frame 6, and an electric push rod 7. Anti-slip support seats 2 are fixedly installed on both sides of the bottom of the water-collecting base 1, providing anti-slip support and improving stability. The water-collecting base 1 also collects water, allowing for its rational use. Adjustable slide rail mechanisms 3 are fixedly installed on the front and rear sides of the water-collecting base 1. The adjustable slide rail mechanism 3 has three sliding positions for easy adjustment. The adjustable slide rail mechanism 3 has two fixed sliding positions, each with a lower placement frame 4. The lower placement frame 4 can hold the steel pipe 10. The lower placement frame 4 has guide adjustment cylinders 5 on its front and rear sides. The guide adjustment cylinders 5 are fixedly installed on the front and rear sides of the two sliding positions of the adjustable slide rail mechanism 3. The upper ends of the rods of the two guide adjustment cylinders 5 are respectively connected to the front and rear sides of the drive upper limiting frame 6. The guide adjustment cylinders 5 can drive the drive upper limiting frame 6 to descend, which is convenient for clamping the steel pipe 10 with the lower placement frame 4. At the same time, the drive upper limiting frame 6 is used to drive the steel pipe 10. An electric push rod 7 is fixedly installed on the middle sliding position of the adjustable slide rail mechanism 3. The electric push rod 7 can adjust the up and down position of the detection position.
[0053] Combination Figure 1 The following describes a specific embodiment. This embodiment uses a two-axis adjustment mechanism 8 to adjust the front and rear positions of the ultrasonic testing mechanism 9. The specific technical solution is as follows: it includes a two-axis adjustment mechanism 8 and an ultrasonic testing mechanism 9; the two-axis adjustment mechanism 8 is fixedly installed on the upper end of the electric push rod 7, and the two-axis adjustment mechanism 8 can adjust the front and rear positions of the ultrasonic testing mechanism 9. The ultrasonic testing mechanism 9 is fixedly installed at the front end of the two-axis adjustment mechanism 8, and the ultrasonic testing mechanism 9 can detect internal defects in the weld of the steel pipe 10.
[0054] The working principle of this specific embodiment is as follows: In use, the position of the lower placement frame 4 is adjusted according to the adjustable slide rail mechanism 3. Then, the steel pipe 10 is placed on the two lower placement frames 4, which support the steel pipe 10. At this time, the guide adjustment cylinder 5 drives the drive upper limiting frame 6 to descend, so that the drive upper limiting frame 6 and the lower placement frame 4 clamp the steel pipe 10. The drive upper limiting frame 6 can drive the steel pipe 10, so that the steel pipe 10 can rotate, which facilitates the detection of internal defects in the weld of the steel pipe 10. At this time, the detection position is adjusted by the adjustable slide rail mechanism 3 in the middle. The electric push rod 7 drives the ultrasonic detection mechanism 9 to move up and down. At the same time, the two-axis adjustment mechanism 8 is used to adjust the front and back position of the ultrasonic detection mechanism 9. The ultrasonic detection mechanism 9 is used to detect internal defects in the weld of the steel pipe 10.
[0055] Specific Implementation Method Two: Combining Figure 2 The illustration shows this specific embodiment, which is a further limitation of Specific Embodiment 1. This specific embodiment achieves water collection through a water-collecting base 1, which can save energy. The specific technical solution adopted is as follows: The water-collecting base 1 includes a base plate 1-1 and a water-blocking frame 1-2; the water-blocking frame 1-2 is welded to the upper end face of the base plate 1-1, and the water-blocking frame 1-2 is sealed to the base plate 1-1, which can block water and prevent water leakage. A water-collecting trough 1-11 is provided on the upper end face of the base plate 1-1, and a drain hole 1-12 is opened in the middle of the water-collecting trough 1-11. The water-collecting trough 1-11 can collect water and discharge it through the drain hole 1-12. The water-collecting trough 1-11 is located inside the water-blocking frame 1-2. Several fixing threaded holes 1-13 are opened on both the front and rear sides of the upper end face of the base plate 1-1. The fixing threaded holes 1-13 can realize the fixing of the adjustable slide rail mechanism 3, such as... Figure 3 As shown, in this specific embodiment, the water-collecting base 1 is supported by an anti-slip support seat 2. An anti-slip pad 2-1 is fixedly installed at the bottom of the anti-slip support seat 2. The bottom of the anti-slip pad 2-1 is provided with a concave anti-slip groove 2-2. The anti-slip pad 2-1 achieves anti-slip through the anti-slip groove 2-2.
[0056] In this specific embodiment, water is blocked by a water-blocking frame 1-2, water is collected by a water collection trough 1-11, and water is drained by a drain hole 1-12, so that the water can be reused. At the same time, the base plate 1-1 is supported by an anti-slip support seat 2, which can prevent slipping during support and improve the stability of the support.
[0057] Specific implementation method three: such as Figure 4 The following describes a specific embodiment, which is a further limitation of embodiment one or two. In this embodiment, the adjustable slide rail mechanism 3 is used to adjust the fixed position and the detection position. The specific technical solution is as follows: The adjustable slide rail mechanism 3 includes a slide rail 3-1, a slider 3-2, a mounting plate 3-3, a locking plate 3-4, and a locking bolt 3-5. Three sliders 3-2 are movably connected to each of the two slide rails 3-1. The upper end surfaces of the three corresponding sliders 3-2 on the front and rear of the two slide rails 3-1 are fixedly mounted with the mounting plate 3-3 to form three sliding positions. The sliding positions on both sides of the three sliding positions are fixed adjustment positions, and the middle sliding position is a detection position, which facilitates adjustment of the detection position. The locking plate 3-4 is fixedly mounted on the front end of the mounting plate 3-3. The locking bolt 3-5 is connected to the locking plate 3-4 by threads. The head of the locking bolt 3-5 is in contact with the front end surface of the water collection base 1. The locking bolt 3-5 can lock the three sliding positions, which is convenient for fixing.
[0058] In this specific embodiment, during adjustment, the slider 3-2 slides on the slide rail 3-1 to facilitate position adjustment. After adjustment, the mounting plate 3-3 is locked by the locking bolt 3-5. The three sliding positions enable quick position adjustment, facilitating the support of the steel pipe 10 and the adjustment of the detection position.
[0059] Specific implementation method four: such as Figure 5 , Figure 6 The following describes this specific embodiment, which is a further limitation of embodiment one, two, or three. This specific embodiment uses a lower placement frame 4 to support the steel pipe 10, enabling the steel pipe 10 to rotate on the lower placement frame 4. The specific technical solution is as follows: The lower placement frame 4 includes a placement block 4-1 and a placement roller 4-2; the upper end face of the placement block 4-1 is provided with a concave V-shaped groove 4-11, and both ends of the V-shaped groove 4-11 are provided with concave mounting grooves. The placement roller 4-2 passes through the mounting groove via a rotating shaft. The placement roller 4-2 can support the steel pipe 10, and at the same time, the steel pipe 10 can rotate on the placement roller 4-2.
[0060] In this specific embodiment, the steel pipe 10 is placed on the placement roller 4-2 of the placement block 4-1, and the placement roller 4-2 can be used to support and rotate the steel pipe 10, thereby improving the stability of the steel pipe 10.
[0061] Specific implementation method five: such as Figure 7 , Figure 8 The illustration describes this specific embodiment, which is a further limitation of embodiment one, two, three, or four. This specific embodiment achieves adjustment and guidance through a guide-type adjusting cylinder 5, specifically adopting the following technical solution: The guide-type adjusting cylinder 5 includes an adjusting cylinder 5-1, a guide block 5-2, a guide rod 5-3, and a fixing block 5-4; the upper end face of the rod of the adjusting cylinder 5-1 is fixedly connected to the bottom of the fixing block 5-4, and the fixing block 5-4 is welded to the outer wall of the drive-type upper limiting frame 6. The adjusting cylinder 5-1 is used to adjust the vertical position of the drive-type upper limiting frame 6. The regulating cylinder 5-1 is symmetrically fixed with guide blocks 5-2 at both upper ends. Guide blocks 5-2 have guide holes. Guide rods 5-3 are movably connected in the guide holes of guide blocks 5-2. The upper ends of the two guide rods 5-3 are fixedly connected to the bottom of the fixed block 5-4. The fixed block 5-4 is adjusted up and down by the guide rods 5-3, which can improve the stability of the fixed block 5-4. The bottom of the regulating cylinder 5-1 is welded to a cylinder base 5-11. Several through holes are evenly opened on the cylinder base 5-11, which can fix the regulating cylinder 5-1.
[0062] In this specific embodiment, the adjusting cylinder 5-1 is fixed by the cylinder base 5-11. The adjusting cylinder 5-1 adjusts the position of the fixing block 5-4. When using the fixing block 5-4, the guide rod 5-3 guides the fixing block 5-2, which improves the stability of the adjustment of the fixing block 5-4. The adjusting cylinder 5-1 can be a commercially available electric cylinder or a pneumatic cylinder.
[0063] Specific implementation method six: such as Figure 9The illustration shows this specific embodiment, which is a further limitation of embodiment one, two, three, four, or five. In this specific embodiment, the steel pipe 10 is fixed and driven to rotate by a drive-type upper limiting frame 6. The specific technical solution is as follows: The drive-type upper limiting frame 6 includes an upper limiting block 6-1, a drive roller 6-2, a drive motor 6-3, a pulley 6-4, and a belt 6-5; the bottom of the upper limiting block 6-1 has a concave inverted V-shaped groove, and the two end faces of the inverted V-shaped groove have concave mounting grooves. The drive roller 6-2 is mounted in the mounting groove through a rotating shaft, and the drive roller 6-2 can realize... The upper part of the steel pipe 10 is fixed, which can also drive the rotation of the steel pipe 10. One end of the shaft of the drive roller 6-2 extends out of the upper limit block 6-1. A pulley 6-4 is fixedly installed on the outer end of the shaft of the drive roller 6-2. The upper limit block 6-1 has a recessed mounting hole. The drive motor 6-3 is installed in the mounting hole by bolts. The pulley 6-4 is installed on the shaft of the drive motor 6-3 by bolts. The three pulleys 6-4 are connected by belt 6-5. The drive motor 6-3 drives the rotation of the drive roller 6-2 through belt 6-5. An anti-slip layer is provided on the outer wall of the drive roller 6-2 to facilitate rapid driving.
[0064] In this specific embodiment, the drive-type upper limiting frame 6, together with the lower placement frame 4, clamps the steel pipe 10. After clamping, the drive motor 6-3 drives the pulley 6-4 to rotate. The three pulleys 6-4 are connected by a belt 6-5 to drive the drive roller 6-2 to rotate. The drive roller 6-2 can realize the rotation of the steel pipe 10. At the same time, the drive roller 6-2 can achieve anti-slip, so that the steel pipe 10 is not easy to slip during driving, which facilitates the detection of internal defects in the weld of the steel pipe 10.
[0065] Specific implementation method seven: such as Figure 10This embodiment illustrates a further limitation of embodiments one, two, three, four, five, or six. In this embodiment, the ultrasonic testing mechanism 9's front-to-back position adjustment is achieved through a two-axis adjustment mechanism 8. The specific technical solution is as follows: The two-axis adjustment mechanism 8 includes a lower seat 8-1, an upper slide 8-2, a T-shaped slide 8-3, a slide fixing bolt 8-4, a fixing seat 8-5, an adjusting bolt 8-6, a bearing 8-7, a connecting block 8-8, and a stabilizing rod 8-9. The upper end face of the lower seat 8-1 has a concave T-shaped groove 8-11. The bottom of the upper slide 8-2 is integrally connected to the T-shaped slide 8-3. The upper slide 8-2 slides within the T-shaped groove 8-11 of the lower seat 8-1, facilitating front-to-back position adjustment. The T-shaped slide 8-3 is movably connected within the T-shaped groove 8-11. The upper slide 8-2 is connected to the slide fixing bolt 8-4. The head of the fixing bolt 8-4 contacts the T-shaped groove 8-11 of the T-shaped slide block 8-3. The fixing bolt 8-4 can lock the upper slide block 8-2, thus fixing the upper slide column 8-2. The front end face of the upper slide block 8-2 is fixedly installed with a fixing seat 8-5. The middle part of the fixing seat 8-5 is connected to the adjusting bolt 8-6 by thread. The bottom of the adjusting bolt 8-6 is integrally connected to a round shaft. The round shaft is fixedly installed with a bearing 8-7 by a shaft retainer. The bearing 8-7 is fixedly installed in the hole groove of the connecting block 8-8 by a hole retainer. The bearing 8-7 can prevent the connecting block 8-8 from rotating when the adjusting bolt 8-6 rotates. The front and rear sides of the fixing seat 8-5 are movably connected with stabilizing rods 8-9. The bottom of the connecting block 8-8 and the bottom of the two stabilizing rods 8-9 are fixedly installed on the upper end face of the ultrasonic testing mechanism 9. The ultrasonic testing mechanism 9 can be finely adjusted up and down by adjusting the adjusting bolt 8-6.
[0066] In this specific embodiment, the upper slide 8-2 slides within the T-shaped groove 8-11 of the lower body 8-1 by relying on the T-shaped slide 8-3, which facilitates the adjustment of the front and rear positions of the ultrasonic testing mechanism 9. After adjustment, the upper slide 8-2 can be locked by the slide fixing bolt 8-4. After adjustment, the upper and lower positions of the ultrasonic testing mechanism 9 can be finely adjusted by the adjusting bolt 8-6. During adjustment, the stability is improved by the stabilizing rod 8-9.
[0067] Specific Implementation Method Eight: This specific implementation method is a further limitation of Specific Implementation Methods One, Two, Three, Four, Five, Six, or Seven. In this specific implementation method, the detection of internal defects in the weld of the steel pipe 10 is achieved through an ultrasonic testing mechanism 9. The specific technical solution adopted is as follows: The ultrasonic testing mechanism 9 includes a testing module 9-1, a laser rangefinder 9-2, a phased array probe and a TOFD probe pair 9-3, and a water spray mechanism 9-4; a mounting groove is provided in the bottom center of the testing module 9-1, and the phased array probe and the TOFD probe pair 9-3 are installed in the mounting groove by bolts. The phased array probe realizes rapid scanning and emits in a fan-shaped scanning mode (angle range 45°-70°). The ultrasonic phased array probe operates at a frequency of 2-5MHz and has ≥32 crystals. The TOFD probe is used for precise measurement of defect height. A water spray mechanism 9-4 is provided on the outside of the phased array probe and the TOFD probe 9-3. The water spray mechanism 9-4 is fixedly installed on the detection module 9-1. Laser rangefinders 9-2 are fixedly installed on both sides of the bottom of the detection module 9-1. The laser rangefinders 9-2 can measure the distance to the steel pipe 10, which can improve safety. The water spray mechanism 9-4 includes the necessary components for spraying with existing nozzles or other cooperating nozzles. Its working principle is the same as that of the necessary components for spraying with existing nozzles and other cooperating nozzles.
[0068] This specific embodiment uses a phased array probe and a TOFD probe pair 9-3 for detection. The phased array probe performs rapid scanning and emits ultrasonic waves in a fan-shaped scanning mode (angle range 45°-70°). The operating frequency of the phased array probe is 2-5MHz, and the number of crystals is ≥32. The TOFD probe pair accurately measures the defect height. A water spray mechanism 9-4 works in conjunction with the phased array probe and the TOFD probe pair 9-3. The water spray pressure of the water spray mechanism 9-4 is 0.1-0.3MPa, preferably 0.2MPa.
Claims
1. A self-adjusting ultrasonic testing device for internal defects in steel pipe welds, characterized in that: The system includes a water-collecting base (1), anti-slip support seats (2), an adjustable slide rail mechanism (3), a lower placement frame (4), a guide-type adjusting cylinder (5), a drive-type upper limiting frame (6), an electric push rod (7), a two-axis adjusting mechanism (8), and an ultrasonic testing mechanism (9). Anti-slip support seats (2) are fixedly installed on both sides of the bottom of the water-collecting base (1). Adjustable slide rail mechanisms (3) are fixedly installed on both the front and rear sides of the water-collecting base (1). Lower placement frames (4) are fixedly installed on the left and right sliding positions of the adjustable slide rail mechanism (3). The front and rear sides of the mounting frame (4) are provided with guide-type adjustment cylinders (5). The guide-type adjustment cylinders (5) are fixedly installed on the front and rear sides of the left and right sliding positions of the adjustable slide rail mechanism (3). The upper ends of the rods of the two guide-type adjustment cylinders (5) are respectively connected to the front and rear sides of the drive-type upper limiting frame (6). An electric push rod (7) is fixedly installed on the middle sliding position of the adjustable slide rail mechanism (3). A two-axis adjustment mechanism (8) is fixedly installed on the upper end of the rod of the electric push rod (7). An ultrasonic detection mechanism (9) is fixedly installed at the front end of the two-axis adjustment mechanism (8).
2. The on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds according to claim 1, characterized in that: The water-collecting base (1) includes a base plate (1-1) and a water-blocking frame (1-2); the water-blocking frame (1-2) is welded to the upper end face of the base plate (1-1), and the water-blocking frame (1-2) is sealed to the base plate (1-1). A water-collecting trough (1-11) is provided on the upper end face of the base plate (1-1), and a drain hole (1-12) is opened in the middle of the water-collecting trough (1-11). The water-collecting trough (1-11) is located inside the water-blocking frame (1-2). Several fixing threaded holes (1-13) are opened on the front and rear sides of the upper end face of the base plate (1-1).
3. The on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds according to claim 1, characterized in that: The bottom of the anti-slip support (2) is fixedly installed with an anti-slip pad (2-1), and the bottom of the anti-slip pad (2-1) is provided with a concave anti-slip groove (2-2).
4. The on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds according to claim 1, characterized in that: The adjustable slide rail mechanism (3) includes a slide rail (3-1), a slider (3-2), a mounting plate (3-3), a locking plate (3-4), and a locking bolt (3-5). Three sliders (3-2) are movably connected to each of the two slide rails (3-1). The upper surfaces of the three sliders (3-2) corresponding to the front and rear of the two slide rails (3-1) are fixedly mounted with the mounting plate (3-3) to form three sliding positions. The front end of the mounting plate (3-3) is fixedly mounted with the locking plate (3-4). The locking plate (3-4) is connected to the locking bolt (3-5) by a thread. The head of the locking bolt (3-5) is in contact with the front end of the water collection base (1).
5. The on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds according to claim 1, characterized in that: The lower placement frame (4) includes a placement block (4-1) and a placement roller (4-2); the upper end face of the placement block (4-1) is provided with a concave V-shaped groove (4-11), and both ends of the V-shaped groove (4-11) are provided with concave mounting grooves, and the placement roller (4-2) passes through the mounting groove via a rotating shaft.
6. The on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds according to claim 1, characterized in that: The guide-type regulating cylinder (5) includes a regulating cylinder (5-1), a guide block (5-2), a guide rod (5-3), and a fixing block (5-4). The upper end face of the rod of the regulating cylinder (5-1) is fixedly connected to the bottom of the fixing block (5-4). The two upper ends of the regulating cylinder (5-1) are symmetrically fixedly installed with guide blocks (5-2). The guide blocks (5-2) have guide holes. The guide rods (5-3) are movably connected in the guide holes of the guide blocks (5-2). The upper ends of the two guide rods (5-3) are fixedly connected to the bottom of the fixing block (5-4).
7. The on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds according to claim 6, characterized in that: The bottom of the regulating cylinder (5-1) is welded to a cylinder base (5-11), and several through holes are evenly opened on the cylinder base (5-11).
8. The on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds according to claim 1, characterized in that: The drive-type upper limiting frame (6) includes an upper limiting block (6-1), a drive roller (6-2), a drive motor (6-3), a pulley (6-4), and a belt (6-5). The bottom of the upper limiting block (6-1) is provided with a concave inverted V-shaped groove, and the two end faces of the inverted V-shaped groove are provided with concave mounting grooves. The drive roller (6-2) is installed in the mounting groove through a rotating shaft. One end of the rotating shaft of the drive roller (6-2) extends out of the upper limiting block (6-1). The pulley (6-4) is fixedly installed at the outer end of the rotating shaft of the drive roller (6-2). The upper limiting block (6-1) is provided with a concave mounting hole. The drive motor (6-3) is installed in the mounting hole through bolts. The pulley (6-4) is installed on the rotating shaft of the drive motor (6-3) through bolts. The three pulleys (6-4) are connected by a belt (6-5).
9. The on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds according to claim 1, characterized in that: The dual-axis adjustment mechanism (8) includes a lower seat (8-1), an upper slide (8-2), a T-shaped slide (8-3), a slide fixing bolt (8-4), a fixing seat (8-5), an adjusting bolt (8-6), a bearing (8-7), a connecting block (8-8), and a stabilizing rod (8-9). The upper end face of the lower seat (8-1) is provided with a recessed T-shaped groove (8-11). The bottom of the upper slide (8-2) is integrally connected to the T-shaped slide (8-3), which is movably connected within the T-shaped groove (8-11). A slide fixing bolt (8-4) is connected to the upper slide (8-2), and the head of the slide fixing bolt (8-4) is connected to the T-shaped slide. The T-shaped groove (8-11) of the seat (8-3) is in contact with each other. The front end face of the upper slide (8-2) is fixedly installed with a fixed seat (8-5). The middle part of the fixed seat (8-5) is connected to an adjusting bolt (8-6) by a thread. The bottom of the adjusting bolt (8-6) is integrally connected to a round shaft. The round shaft is fixedly installed with a bearing (8-7) by a shaft snap ring. The bearing (8-7) is fixedly installed in the hole groove of the connecting block (8-8) by a hole snap ring. The front and rear sides of the fixed seat (8-5) are movably connected with a stabilizing rod (8-9). The bottom of the connecting block (8-8) and the bottom of the two stabilizing rods (8-9) are fixedly installed on the upper end face of the ultrasonic testing mechanism (9).
10. The on-demand self-adjusting ultrasonic testing device for internal defects in steel pipe welds according to claim 1, characterized in that: The ultrasonic testing mechanism (9) includes a testing module (9-1), a laser rangefinder (9-2), a phased array probe and a TOFD probe pair (9-3), and a water spray mechanism (9-4). The bottom center of the testing module (9-1) is provided with a mounting groove, in which the phased array probe and the TOFD probe pair (9-3) are installed by bolts. The water spray mechanism (9-4) is provided on the outside of the phased array probe and the TOFD probe pair (9-3). The water spray mechanism (9-4) is fixedly installed on the testing module (9-1). The laser rangefinder (9-2) is fixedly installed on both sides of the bottom of the testing module (9-1).