An ultrasonic flaw detection device for pipe and rod defects

Abstract

The present invention discloses an ultrasonic flaw detection device for pipe and rod defects, belonging to the field of ultrasonic flaw detection. An ultrasonic flaw detection device for pipe and rod defects includes a detection workbench, and also includes: a detection unit, which is arranged at the top of the detection workbench, a conveying support frame, which is arranged on both sides of the detection workbench, a fine-tuning structure, which is arranged between the conveying support frame and the detection workbench, a centering structure, which is arranged on one side of the top of the detection workbench, and a cleaning structure, which is arranged on one side of the centering structure; the present invention drives the rotating disk to rotate through a telescopic cylinder, thereby driving three groups of moving columns to work together, pushing the centering wheel to fully contact the pipe and rod, ensuring that the pipe and rod are stably located at the axial center position of the shell, realizing an efficient and accurate automatic centering function, ensuring that the ultrasonic probe always accurately coincides with the center line of the pipe and rod, avoiding the detection error that may be caused by the probe position offset, and significantly improving the accuracy and reliability of the detection.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic flaw detection, and in particular to a pipe and rod defect ultrasonic flaw detection device. Background Art

[0002] The ultrasonic flaw detection equipment for pipe and rod defects is a non-destructive testing equipment that uses ultrasonic technology to detect internal defects in pipes and rods. It uses the propagation characteristics of ultrasonic waves in materials to transmit and receive ultrasonic waves, and analyzes them to determine the location, size and nature of defects. It has a wide range of applications in metal manufacturing, aerospace, automobile manufacturing and other fields.

[0003] After searching, the Chinese patent application number 202010121153.7 discloses a round bar ultrasonic flaw detection device, including: a round bar conveying mechanism; a feeding mechanism for conveying round bars to the round bar conveying mechanism; a flaw detection roller, the flaw detection roller is used to receive the round bars pushed by the round bar conveying mechanism; and a flaw detection mechanism, which is arranged above the flaw detection roller and can perform ultrasonic flaw detection on the round bars. The round bar ultrasonic flaw detection device has the advantages of automatic flaw detection, fast flaw detection speed and wide flaw detection range;

[0004] The above patent still has the following shortcomings: it has the defect of easy deviation. After the device is used for a long time or adjusted according to the size of the pipe and rod, it is easy to have the phenomenon of centering deviation, which makes the probe position deviate from the center of the pipe and rod, resulting in a change in the incident angle of the probe, thereby affecting the propagation path and reflection effect of the ultrasonic wave, and reducing the accuracy and reliability of the detection. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that after long-term use or after adjustment according to the size of the pipe and rod, the device is prone to centering deviation, causing the probe position to deviate from the center of the pipe and rod, resulting in a change in the incident angle of the probe, thereby affecting the propagation path and reflection effect of the ultrasonic wave, and reducing the accuracy and reliability of the detection. A pipe and rod defect ultrasonic flaw detection device is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An ultrasonic flaw detection device for pipe and rod defects, comprising a detection workbench and:

[0008] A detection unit is arranged on the top of the detection workbench;

[0009] A conveying support frame is arranged on both sides of the detection workbench, and a conveying unit is installed on the top of the conveying support frame;

[0010] A fine-tuning structure is provided between the conveying support frame and the detection workbench, and is used to adjust the position between the detection workbench and the conveying support frame;

[0011] A centering structure is provided on one side of the top of the inspection workbench and is used to center the pipe rod;

[0012] A cleaning structure, arranged on one side of the centering structure, for cleaning the surface of the pipe rod;

[0013] The drying structure is arranged on the other side of the top of the detection workbench and is used for drying and dehumidifying the surface of the pipe and rod.

[0014] As a preferred technical solution of the present application, the detection unit includes a control box installed on one side of the detection workbench, a circulating water tank installed on the other side of the detection workbench, an immersion tank fixed on the top of the detection workbench and connected to the circulating water tank, rubber baffles fixed inside the two sides of the immersion tank, water receiving tanks installed on both sides of the immersion tank and connected to the circulating water tank, a second fixed frame fixed on one side of the top of the detection workbench, a second pneumatic push rod installed on the top of the second fixed frame, a mobile frame installed at the telescopic end of the second pneumatic push rod and slidably connected to the second fixed frame, a two-way electric slide installed on both sides of the mobile frame, and a two-way electric slide installed on both sides of the mobile frame. An ultrasonic probe at the moving end of the slide, the conveying unit includes a first electric slide installed on one side of the top of the conveying support frame, a deflection wheel installed on the moving end of the first electric slide, a driving wheel installed on the top of the conveying support frame, a servo motor installed on the top of the inside of the conveying support frame, a first fixed frame fixed on one side of the top of the conveying support frame, a second electric slide installed on the top of the inside of the first fixed frame, a first pneumatic push rod installed on the moving end of the second electric slide, and a clamping wheel installed on the telescopic end of the first pneumatic push rod, the servo motor and the driving wheel are connected to the transmission wheel through a transmission belt, and the control chassis is electrically connected to the ultrasonic probe through a wire.

[0015] As a preferred technical solution of the present application, the centering structure includes an outer shell fixed on one side of the top end of the detection workbench, a slide groove opened on one side of the inner part of the outer shell, a moving block sliding in the slide groove, a centering wheel installed at one end of the moving block, a moving column fixed on one side of the moving block, a rotating disk rotatably connected to one side of the inner part of the outer shell, a moving groove opened in the rotating disk and slidably connected to the moving column, a connecting plate fixed on one side of the rotating disk, and a telescopic cylinder rotatably connected to one side of the connecting plate and rotatably connected to the detection workbench.

[0016] As a preferred technical solution of the present application, the connecting piece extends to the inside of the shell and is connected to the rotating disk, and the moving blocks are distributed in a ring-shaped manner with equal intervals on the shell.

[0017] As a preferred technical solution of the present application, the fine-tuning structure includes a pulley fixed at the bottom end of the detection workbench, a slide rail sliding at the bottom end of the pulley, a positioning column fixed at the top end of the conveying support frame, a connecting plate sliding at the bottom end of the positioning column, a guide groove opened on one side of the connecting plate, a third pneumatic push rod installed inside the detection workbench and slidably connected to the guide groove, and a friction pad fixed at the telescopic end of the third pneumatic push rod.

[0018] As a preferred technical solution of the present application, the third pneumatic push rod passes through the guide groove and is connected to the friction pad, and the connecting plates are symmetrically distributed on the vertical center line of the detection workbench.

[0019] As a preferred technical solution of the present application, the cleaning structure includes a dust hood fixed on one side of the outer shell, a brush installed at one end of the moving block, a dust exhaust pipe fixed at the bottom end of the dust hood, a fixed base installed inside the detection workbench and connected to the dust exhaust pipe, a drive motor fixed at the top of the fixed base, a fan blade rotatably connected to the inside of the fixed base and connected to the end of the output shaft of the drive motor, a first mounting ring threadedly connected to the outside of the fixed base, a transparent shell fixed at the bottom end of the first mounting ring, a second mounting ring threadedly connected to the bottom end of the fixed base, and a corrugated filter fixed at the bottom end of the second mounting ring.

[0020] As a preferred technical solution of the present application, the shape of the corrugated filter is a hollow tubular structure with a wrinkled surface, and the dust collecting hood is connected to the fixing seat through a dust exhaust pipe.

[0021] As a preferred technical solution of the present application, the drying structure includes a fixed rod fixed on the other side of the top of the detection workbench, a cover shell fixed on the top of the fixed rod, a connecting pipe fixed on one side of the bottom end of the cover shell and connected to the fixed seat, an air inlet pipe installed inside the cover shell, a mounting bracket fixed on the outside of the air inlet pipe, an electric heating rod installed inside the mounting bracket, a guide plate fixed on the outer wall of the air inlet pipe, and a blowing pipe fixed on one side of the cover shell.

[0022] As a preferred technical solution of the present application, the guide plate is in the shape of a spiral sheet structure, and the guide plate and the air inlet pipe are welded into an integrated structure.

[0023] Compared with the prior art, the present invention provides a pipe and rod defect ultrasonic flaw detection device, which has the following beneficial effects:

[0024] The ultrasonic flaw detection equipment for pipe and rod defects uses a telescopic cylinder to push the rotating disk to rotate, thereby driving the three sets of moving columns to work together to push the centering wheel to fully contact the pipe and rod, ensuring that the pipe and rod are firmly located at the axial position of the shell, realizing efficient and accurate automatic centering function, ensuring that the ultrasonic probe always accurately coincides with the center line of the pipe and rod, avoiding detection errors that may be caused by probe position deviation, and significantly improving the accuracy and reliability of detection;

[0025] The ultrasonic flaw detection equipment for pipe and rod defects uses the reaction force of the centering wheel to push the pulley to slide flexibly on the slide rail to fine-tune the position of the detection workbench, and the third pneumatic push rod stabilizes the relative position between the detection workbench and the conveying support frame, realizing the automation of position fine-tuning, significantly reducing manual intervention and reducing the risk of errors caused by human operation;

[0026] The ultrasonic flaw detection equipment for pipe and rod defects can clean foreign matter on the surface of the pipe and rod by moving the brush driven by the centering block to contact the pipe and rod. The fan blades will suck the generated dust and foreign matter into the transparent shell along with the air, realizing the surface cleaning function. It not only effectively removes the dust, oxides and other dirt on the surface of the pipe and rod, making the surface smoother and new, but also helps the ultrasonic wave to better penetrate the material, greatly reducing the detection error that may be caused by surface dirt.

[0027] The ultrasonic flaw detection equipment for pipe and rod defects guides the airflow generated by the fan blades into the housing through the connection pipe to dry the surface of the pipe and rod, while the electric heating rod further improves the drying effect of the airflow and realizes the surface drying function. It not only effectively removes the residual moisture on the surface of the pipe and rod, but also prevents the corrosion risk caused by the long-term stay of moisture on the surface of the pipe and rod, and protects the quality and integrity of the pipe and rod. At the same time, it also greatly reduces the waiting time after the inspection and improves the overall working efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of an ultrasonic flaw detection device for pipe and rod defects proposed by the present invention;

[0029] Figure 2 A schematic diagram of the three-dimensional structure of a detection unit of a pipe and rod defect ultrasonic flaw detection device proposed by the present invention;

[0030] Figure 3 This is one of the three-dimensional structural schematic diagrams of the conveying unit in the pipe and rod defect ultrasonic flaw detection equipment proposed by the present invention;

[0031] Figure 4 This is the second schematic diagram of the three-dimensional structure of the conveying unit in the ultrasonic flaw detection equipment for pipe and rod defects proposed by the present invention;

[0032] Figure 5 A three-dimensional structural schematic diagram of a centering structure in a pipe and rod defect ultrasonic flaw detection device proposed by the present invention;

[0033] Figure 6 This is one of the three-dimensional cross-sectional structural schematic diagrams of the centering structure in the pipe and rod defect ultrasonic flaw detection equipment proposed by the present invention;

[0034] Figure 7This is the second schematic diagram of the three-dimensional cross-sectional structure of the centering structure in the ultrasonic flaw detection equipment for pipe and rod defects proposed by the present invention;

[0035] Figure 8 A schematic diagram of a three-dimensional cross-sectional structure of a drying structure in a tube and rod defect ultrasonic flaw detection device proposed by the present invention;

[0036] Fig. 9 A schematic diagram of a three-dimensional cross-sectional structure of a cleaning structure in a pipe and rod defect ultrasonic flaw detection device proposed by the present invention;

[0037] Fig.10 The three-dimensional structural schematic diagram of the fine-tuning structure in the pipe and rod defect ultrasonic flaw detection equipment proposed by the present invention.

[0038] In the figure:

[0039] 1. Inspection workbench; 2. Immersion tank; 3. Centering structure; 301. Rotating disk; 302. Moving tank; 303. Telescopic cylinder; 304. Centering wheel; 305. Moving column; 306. Moving block; 307. Slide; 308. Shell; 309. Connecting piece; 4. Conveying support frame; 5. Fine-tuning structure; 501. Connecting plate; 502. Slide rail; 503. Pulley; 504. Positioning column; 505. Guide groove; 506. Friction pad; 507. Third pneumatic push rod; 6. First electric slide; 7. Drying structure; 701. Connecting pipe; 702. Cover; 703. Air inlet pipe; 704. Guide plate; 705. Electric heating rod; 706. Mounting frame; 707. Blowing Tube; 708, fixed rod; 8, first pneumatic push rod; 9, cleaning structure; 901, plate brush; 902, dust hood; 903, dust exhaust pipe; 904, transparent shell; 905, fixed seat; 906, drive motor; 907, fan blade; 908, first mounting ring; 909, second mounting ring; 910, corrugated filter; 10, first fixed frame; 11, second fixed frame; 12, second pneumatic push rod; 13, second electric slide; 14, control chassis; 15, circulating water tank; 16, water tank; 17, rubber baffle; 18, mobile frame; 19, ultrasonic probe; 20, clamping wheel; 21, deflection wheel; 22, driving wheel; 23, bidirectional electric slide; 24, servo motor. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0041] like Figures 1 to 10As shown, an embodiment of the present invention provides a pipe and rod defect ultrasonic flaw detection device, including a detection workbench 1, and also including:

[0042] A detection unit is arranged on the top of the detection workbench 1;

[0043] The conveying support frame 4 is arranged on both sides of the detection workbench 1, and a conveying unit is installed on the top of the conveying support frame 4;

[0044] A fine-tuning structure 5 is provided between the conveying support frame 4 and the detection workbench 1, and is used to adjust the position between the detection workbench 1 and the conveying support frame 4;

[0045] A centering structure 3 is arranged on one side of the top of the detection workbench 1 and is used to center the pipe rod;

[0046] A cleaning structure 9 is arranged on one side of the centering structure 3 and is used to clean the surface of the pipe rod;

[0047] The drying structure 7 is arranged on the other side of the top of the detection workbench 1 and is used for drying and dehumidifying the surface of the pipe and rod.

[0048] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in one embodiment: the detection unit includes a control box 14 installed on one side of the detection workbench 1, a circulating water tank 15 installed on the other side of the detection workbench 1, an immersion tank 2 fixed on the top of the detection workbench 1 and connected to the circulating water tank 15, a rubber baffle 17 fixed inside the two sides of the immersion tank 2, a water receiving tank 16 installed on both sides of the immersion tank 2 and connected to the circulating water tank 15, a second fixed frame 11 fixed on one side of the top of the detection workbench 1, a second pneumatic push rod 12 installed on the top of the second fixed frame 11, a moving frame 18 installed at the telescopic end of the second pneumatic push rod 12 and slidably connected to the second fixed frame 11, a bidirectional electric slide 23 installed on both sides of the inside of the moving frame 18, and an ultrasonic probe 19 installed at the moving end of the bidirectional electric slide 23, and the conveying unit includes a first electric slide 6 installed on one side of the top of the conveying support frame 4, a deflection wheel 21 installed at the moving end of the first electric slide 6, a driving wheel 22 installed at the top of the conveying support frame 4, and a servo motor installed at the top of the conveying support frame 4. The servo motor 24 is connected to the driving wheel 22 through a transmission belt, and the control box 14 is electrically connected to the ultrasonic probe 19 through a wire; the position of the pipe rod is limited by the driving wheel 22, the deflection wheel 21 and the pressure wheel 20, and the driving wheel 22 is driven by the servo motor 24 through the transmission belt to rotate the driving wheel 22, and the deflection wheel 21 guides the pipe rod to advance in a spiral shape for feeding operation, and the ultrasonic probe 19 generates ultrasonic waves to detect the pipe rod. Since the pipe rod advances in a spiral shape, the pipe rod is fully in contact with the ultrasonic wave during the detection process to ensure the detection accuracy, and the water flowing out of the two sides of the immersion tank 2 is received through the water receiving tank 16 and introduced into the inside of the circulating water tank 15, and the water is purified by the circulating water tank 15 for recycling.

[0049] like Figure 6 and Figure 7As shown, in one embodiment: the centering structure 3 includes a shell 308 fixed to one side of the top of the detection workbench 1, a slide groove 307 opened on one side of the inner part of the shell 308, a moving block 306 sliding in the slide groove 307, a centering wheel 304 installed at one end of the moving block 306, a moving column 305 fixed on one side of the moving block 306, a rotating disk 301 rotatably connected to one side of the inner part of the shell 308, a moving groove 302 opened in the rotating disk 301 and slidably connected to the moving column 305, a connecting piece 309 fixed on one side of the rotating disk 301, and a telescopic cylinder 303 rotatably connected to one side of the connecting piece 309 and rotatably connected to the detection workbench 1; the rotating disk 301 is pushed to rotate by the telescopic cylinder 303, so that the three groups of moving columns 305 simultaneously push the centering wheel 304 to contact the pipe rod, so that the pipe rod is located at the axial position of the shell 308, ensuring that the ultrasonic probe 19 always coincides with the center line of the pipe rod, thereby avoiding the detection error caused by the deviation of the position of the ultrasonic probe 19.

[0050] like Figure 6 and Figure 7 As shown, in one embodiment: the connecting piece 309 extends to the inside of the shell 308 and is connected to the rotating disk 301, and the moving blocks 306 are distributed in a ring-shaped manner with equal spacing in the shell 308; the arrangement of the connecting piece 309 can facilitate the telescopic cylinder 303 to push the rotating disk 301 to rotate, and the three groups of moving blocks 306 distributed in a ring-shaped manner with equal spacing push the centering wheel 304 from three directions to contact the pipe rod at the same time, so that the pipe rod is located at the axial center position of the shell 308, thereby limiting the conveying position of the pipe rod.

[0051] like Figure 2 and Fig.10 As shown, in one embodiment: the fine-tuning structure 5 includes a pulley 503 fixed at the bottom end of the detection workbench 1, a slide rail 502 sliding at the bottom end of the pulley 503, a positioning column 504 fixed at the top end of the conveying support frame 4, a connecting plate 501 sliding at the bottom end of the positioning column 504, a guide groove 505 opened on one side of the connecting plate 501, a third pneumatic push rod 507 installed inside the detection workbench 1 and slidably connected to the guide groove 505, and a friction pad 506 fixed at the telescopic end of the third pneumatic push rod 507; through the reaction force of the centering wheel 304, the pulley 503 slides horizontally on the top of the slide rail 502 to adjust the position of the detection workbench 1, and the third pneumatic push rod 507 fixes the position between the detection workbench 1 and the conveying support frame 4, and reduces the dependence on manual operation during the centering process by accompanying the position of the centering adjustment device.

[0052] like Fig.10As shown, in one embodiment: the third pneumatic push rod 507 passes through the guide groove 505 and is connected to the friction pad 506, and the connecting plate 501 is symmetrically distributed on the vertical center line of the detection workbench 1; the friction pad 506 is pulled to move by the third pneumatic push rod 507, so that the friction pad 506 and the detection workbench 1 are clamped to fix the position of the connecting plate 501, and the position between the detection workbench 1 and the conveying support frame 4 is fixed.

[0053] like Figure 7 and Fig. 9 As shown, in one embodiment: the cleaning structure 9 includes a dust cover 902 fixed to one side of the housing 308, a brush 901 installed at one end of the moving block 306, a dust exhaust pipe 903 fixed to the bottom end of the dust cover 902, a fixed seat 905 installed inside the detection workbench 1 and connected to the dust exhaust pipe 903, a drive motor 906 fixed to the top of the fixed seat 905, a fan blade 907 rotatably connected to the inside of the fixed seat 905 and connected to the end of the output shaft of the drive motor 906, and a first threaded connection to the outside of the fixed seat 905. A mounting ring 908, a transparent shell 904 fixed at the bottom of the first mounting ring 908, a second mounting ring 909 threadedly connected to the bottom of the fixing seat 905, and a corrugated filter 910 fixed at the bottom of the second mounting ring 909; the moving block 306 can drive the brush 901 to contact the pipe rod, and the brush 901 cleans the foreign matter on the surface of the pipe rod. The fan blades 907 are driven by the driving motor 906 to suck the generated dust and foreign matter into the interior of the transparent shell 904 along with the air, so as to effectively remove the dust, oxides and other dirt on the surface of the pipe rod.

[0054] like Fig. 9 As shown, in one embodiment: the shape of the corrugated filter 910 is a hollow tubular structure with a corrugated surface, and the dust hood 902 is connected to the fixed seat 905 through the dust exhaust pipe 903; due to the surface corrugated filter 910, the contact area between the corrugated filter 910 and the air is increased, thereby improving the filtering effect of the corrugated filter 910.

[0055] like Figure 8As shown, in one embodiment: the drying structure 7 includes a fixing rod 708 fixed to the other side of the top of the detection workbench 1, a cover 702 fixed to the top of the fixing rod 708, a connecting pipe 701 fixed to one side of the bottom end of the cover 702 and connected to the fixing seat 905, an air inlet pipe 703 installed inside the cover 702, a mounting frame 706 fixed to the outside of the air inlet pipe 703, an electric heating rod 705 installed inside the mounting frame 706, a guide plate 704 fixed on the outer wall of the air inlet pipe 703, and a blowing pipe 707 fixed on one side of the cover 702; the airflow generated by the fan blades 907 is introduced into the interior of the cover 702 through the connecting pipe 701 to dry the surface of the tubes and rods inside the air inlet pipe 703, and the electric heating rod 705 heats the airflow to improve the drying effect, remove the residual moisture on the surface of the tubes and rods, prevent the moisture from staying on the surface of the tubes and rods for a long time, and reduce the risk of corrosion.

[0056] like Figure 8 As shown, in one embodiment: the guide plate 704 is in the shape of a spiral sheet structure, and the guide plate 704 and the air inlet pipe 703 are welded into an integrated structure; the airflow is guided by the spiral guide plate 704 to make the airflow distribution more uniform, and at the same time, the contact area between the spirally flowing airflow and the tube rod is larger, and the heat exchange is more sufficient, thereby accelerating the drying speed.

[0057] Specifically, when the ultrasonic flaw detection device for pipe and rod defects is used: the device is installed at the use position, and the pipe and rod to be detected is placed between the driving wheel 22 and the deflection wheel 21 using the device, and the position of the deflection wheel 21 is adjusted according to the diameter of the pipe and rod through the first electric slide 6, and at the same time, the second electric slide 13 pushes the first pneumatic push rod 8 to move and synchronously adjust the position of the clamping wheel 20 to ensure that the clamping wheel 20 is located directly above the pipe and rod, and the servo motor 24 is started so that the servo motor 24 drives the driving wheel 22 to rotate through the transmission belt, so that the driving wheel 22 drives the pipe and rod to rotate , then the first pneumatic push rod 8 is started to extend and push the clamping wheel 20 to press the pipe rod, so that the driving wheel 22, the deflection wheel 21 and the clamping wheel 20 limit the position of the pipe rod, and the pipe rod is in close contact with the deflection wheel 21. Since the deflection wheel 21 is placed at an angle, the pipe rod moves forward in a spiral shape during the rotation process to perform the feeding operation. Then the centering structure 3 guides the loaded pipe rod to ensure that the ultrasonic probe 19 always coincides with the center line of the pipe rod. At the same time, the fine-tuning structure 5 adjusts the position of the detection workbench 1 during the centering process, and adjusts the position of the detection workbench 1 after the centering is completed. After that, the position between the detection workbench 1 and the conveying support frame 4 is locked and fixed. After the pipe rod passes through the centering structure 3, it contacts the cleaning structure 9. The surface of the pipe rod is cleaned by the cleaning structure 9 to remove foreign matter on the surface of the pipe rod. Then, the pipe rod passes through the rubber baffle 17 and enters the interior of the immersion tank 2. Ultrasonic waves are generated by the ultrasonic probe 19. At the same time, the water in the immersion tank 2 is used as a coupling agent to conduct the ultrasonic waves. The ultrasonic waves are transmitted to the pipe rod to be tested, so that the ultrasonic probe 19 receives the reflected or scattered signals and converts them into electrical signals and transmits them to the control box 14. The control box 14 The structure inside the rod is analyzed and tested. As the pipe rod moves forward in a spiral shape, the pipe rod is fully in contact with the ultrasonic wave during the testing process to ensure the testing accuracy. After the testing, the pipe rod leaves the immersion tank 2 from the other side of the immersion tank 2. The water flowing out of the two sides of the immersion tank 2 is collected by the water receiving tank 16 and introduced into the circulating water tank 15. The water is purified by the circulating water tank 15 for recycling. The water leakage at the holes on both sides of the immersion tank 2 is slowed down by the rubber baffle 17. The surface of the pipe rod that has completed the testing is dried by the drying structure 7 to prevent the surface of the pipe rod from rusting.

[0058] When the pipe stick moves to the hole inside the shell 308, the telescopic cylinder 303 is started to extend, so that the telescopic cylinder 303 pushes the rotating disk 301 through the connecting piece 309, and the rotating disk 301 rotates inside the shell 308. At the same time, the rotating rotating disk 301 pushes the three groups of moving columns 305 to move through the moving groove 302, so that the moving columns 305 drive the moving blocks 306 to slide inside the sliding groove 307, and adjust the positions of the three groups of moving blocks 306. The three groups of moving blocks 306 push the centering wheel 304 from three directions to contact the pipe stick at the same time, so that the pipe stick is located at the axial position of the shell 308, and the conveying position of the pipe stick is limited. The pipe stick can be conveyed and moved normally after centering through the rolling centering wheel 304;

[0059] When the centering wheel 304 is not in contact with the pipe rod at the same time, the pressure generated by the centering wheel 304 in contact with the pipe rod reacts on the housing 308 and the inspection workbench 1, so that the pulley 503 slides horizontally on the top of the slide rail 502, and the position of the inspection workbench 1 is adjusted so that the pipe rod and the housing 308 are located at the same axial position. During the movement of the inspection workbench 1, the third pneumatic push rod 507 adjusts the position of the friction pad 506 along with the movement of the inspection workbench 1. After the position adjustment is completed, the third pneumatic push rod 507 is started to contract so that the third pneumatic push rod 507 drives the friction pad 506 to move upward, thereby pushing the connecting plate 501 to slide on the outer side of the positioning column 504, so that the connecting plate 501 contacts the inspection workbench 1, and the position of the connecting plate 501 is fixed by clamping the friction pad 506 and the inspection workbench 1, so that the position between the inspection workbench 1 and the conveying support frame 4 is fixed, and at the same time, the positioning column 504 limits the position of the connecting plate 501, so that the connecting plate 501 is not easy to be displaced horizontally;

[0060] During the centering process of the centering structure 3, the moving block 306 can drive the scrub brush 901 to move, so that the three groups of scrub brushes 901 contact the pipe rod. During the spiral movement of the pipe rod, the scrub brush 901 cleans the foreign matter on the surface of the pipe rod and makes it fall into the dust collecting cover 902. By starting the driving motor 906 to drive the fan blade 907 to rotate, the fan blade 907 draws the air inside the transparent shell 904 and discharges it through the connecting pipe 701, so that the corrugated filter screen 910 and the inside of the transparent shell 904 form a negative pressure, and then the transparent shell 904 inhales the air inside the dust collecting cover 902 through the dust exhaust pipe 903, so that the dust and foreign matter generated by the scrub brush 901 are accompanied by the air The air is sucked into the transparent shell 904, and the corrugated filter 910 filters the foreign matter in the air, so that the foreign matter accumulates inside the transparent shell 904, and the filtered air is discharged from the connecting pipe 701. The foreign matter accumulated inside can be visually observed through the transparent shell 904. When too much foreign matter accumulates inside the transparent shell 904, the operation of the device is stopped, and the first mounting ring 908 is rotated to separate the first mounting ring 908 from the fixing seat 905 through the thread, and the transparent shell 904 can be removed to clean the foreign matter inside. The corrugated filter 910 can be removed by rotating the second mounting ring 909, and the corrugated filter 910 can be replaced or cleaned;

[0061] The air exhausted by the cleaning structure 9 enters the interior of the cover 702 through the connecting pipe 701, and is exhausted through the gap between the air inlet pipe 703 and the cover 702. Since the gap between the air inlet pipe 703 and the cover 702 is small, the exhaust air flow rate is increased, so that the exhausted airflow induces the flow of air inside the air inlet pipe 703, and the airflow dries the surface of the tube rod inside the air inlet pipe 703. The electric heating rod 705 heats the airflow to increase its temperature and improve the drying effect. At the same time, the spiral guide plate 704 guides the airflow to make the airflow distribution more uniform. At the same time, the contact area between the spirally flowing airflow and the tube rod is larger, and the heat exchange is more sufficient, thereby accelerating the drying speed.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An ultrasonic flaw detection device for pipe and rod defects, comprising a detection workbench (1), characterized in that: Also includes: A detection unit, arranged on the top of the detection workbench (1); A conveying support frame (4) is arranged on both sides of the detection workbench (1), and a conveying unit is installed on the top of the conveying support frame (4); A fine-tuning structure (5) is arranged between the conveying support frame (4) and the detection workbench (1) and is used to adjust the position between the detection workbench (1) and the conveying support frame (4); A centering structure (3) is arranged on one side of the top of the detection workbench (1) and is used to center the pipe rod; A cleaning structure (9) is arranged on one side of the centering structure (3) and is used to clean the surface of the pipe rod; A drying structure (7) is arranged on the other side of the top of the detection workbench (1) and is used to dry and dehumidify the surface of the pipe rod; The detection unit comprises a control box (14) installed on one side of the detection workbench (1), a circulating water tank (15) installed on the other side of the detection workbench (1), an immersion tank (2) fixed on the top of the detection workbench (1) and connected to the circulating water tank (15), rubber baffles (17) fixed inside both sides of the immersion tank (2), a water receiving tank (16) installed on both sides of the immersion tank (2) and connected to the circulating water tank (15), a second fixed frame (11) fixed on one side of the top of the detection workbench (1), a second pneumatic push rod (12) installed on the top of the second fixed frame (11), a moving frame (18) installed at the telescopic end of the second pneumatic push rod (12) and slidably connected to the second fixed frame (11), a bidirectional electric slide (23) installed on both sides of the inside of the moving frame (18), and an ultrasonic probe (19) installed at the moving end of the bidirectional electric slide (23). The ultrasonic probe (19) is used to generate ultrasonic waves to detect the pipe rod. The conveying unit comprises a first electric slide (6) installed on one side of the top end of the conveying support frame (4), a deflection wheel (21) installed on the moving end of the first electric slide (6), a driving wheel (22) installed on the top end of the conveying support frame (4), a servo motor (24) installed on the top end of the conveying support frame (4), a first fixed frame (10) fixed on one side of the top end of the conveying support frame (4), a second electric slide (13) installed on the top end of the first fixed frame (10), a first pneumatic push rod (8) installed on the moving end of the second electric slide (13), and a clamping wheel (20) installed on the telescopic end of the first pneumatic push rod (8). The servo motor (24) and the driving wheel (22) are connected to the transmission wheel via a transmission belt, and the control box (14) is electrically connected to the ultrasonic probe (19) via a wire. The centering structure (3) comprises a shell (308) fixed to one side of the top end of the detection workbench (1), a slide groove (307) opened on one side of the interior of the shell (308), a moving block (306) sliding in the slide groove (307), a centering wheel (304) mounted on one end of the moving block (306), a moving column (305) fixed to one side of the moving block (306), a rotating disk (301) rotatably connected to one side of the interior of the shell (308), a moving groove (302) opened in the interior of the rotating disk (301) and slidably connected to the moving column (305), a connecting plate (309) fixed to one side of the rotating disk (301), and a telescopic cylinder (303) rotatably connected to one side of the connecting plate (309) and rotatably connected to the detection workbench (1); The connecting piece (309) extends to the inside of the housing (308) and is connected to the rotating disk (301), and the moving blocks (306) are distributed in a ring-shaped manner at equal intervals on the housing (308); The fine-tuning structure (5) comprises a pulley (503) fixed at the bottom end of the detection workbench (1), a slide rail (502) sliding at the bottom end of the pulley (503), a positioning column (504) fixed at the top end of the inside of the conveying support frame (4), a connecting plate (501) sliding at the bottom end of the positioning column (504), a guide groove (505) provided on one side of the inside of the connecting plate (501), a third pneumatic push rod (507) installed inside the detection workbench (1) and slidably connected to the guide groove (505), and a friction pad (506) fixed at the telescopic end of the third pneumatic push rod (507).

2. The ultrasonic flaw detection equipment for pipe and rod defects according to claim 1 is characterized in that: The third pneumatic push rod (507) passes through the guide groove (505) and is connected to the friction pad (506), and the connecting plates (501) are symmetrically distributed on the vertical center line of the detection workbench (1).

3. The ultrasonic flaw detection equipment for pipe and rod defects according to claim 1 is characterized in that: The cleaning structure (9) comprises a dust collecting cover (902) fixed to one side of the housing (308), a brush (901) mounted at one end of the moving block (306), a dust exhaust pipe (903) fixed to the bottom end of the dust collecting cover (902), a fixing seat (905) mounted inside the detection workbench (1) and connected to the dust exhaust pipe (903), a driving motor (906) fixed to the top end of the fixing seat (905), a fan blade (907) rotatably connected inside the fixing seat (905) and connected to the end of the output shaft of the driving motor (906), a first mounting ring (908) threadedly connected to the outside of the fixing seat (905), a transparent shell (904) fixed to the bottom end of the first mounting ring (908), a second mounting ring (909) threadedly connected to the bottom end of the fixing seat (905), and a corrugated filter (910) fixed to the bottom end of the second mounting ring (909).

4. The ultrasonic flaw detection equipment for pipe and rod defects according to claim 3 is characterized in that: The corrugated filter (910) is in the shape of a hollow tubular structure with a corrugated surface, and the dust collecting cover (902) is connected to the fixing seat (905) via a dust exhaust pipe (903).

5. The ultrasonic flaw detection equipment for pipe and rod defects according to claim 1 is characterized in that: The drying structure (7) comprises a fixing rod (708) fixed to the other side of the top of the detection workbench (1), a cover (702) fixed to the top of the fixing rod (708), a connecting pipe (701) fixed to one side of the bottom end of the cover (702) and connected to the fixing seat (905), an air inlet pipe (703) installed inside the cover (702), a mounting frame (706) fixed to the outside of the air inlet pipe (703), an electric heating rod (705) installed inside the mounting frame (706), a guide plate (704) fixed to the outer wall of the air inlet pipe (703), and a blowing pipe (707) fixed to one side of the cover (702).

6. The ultrasonic flaw detection equipment for pipe and rod defects according to claim 5 is characterized in that: The guide plate (704) is in the shape of a spiral sheet structure, and the guide plate (704) and the air inlet pipe (703) are in a welded integrated structure.

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