A spiral steel pipe weld defect detection device applied to X-ray detection

Abstract

The application discloses a spiral steel pipe weld defect detection device applied to X-ray detection and relates to the field of steel pipe weld detection, which comprises a base and a movable platform installed on the upper end of the base, and a steel pipe piece is arranged on the upper end of the base; a poking roller and a lifting roller are rotatably installed on the upper end of the movable platform, and the poking roller and the lifting roller are located below the steel pipe piece. The spiral steel pipe weld defect detection device applied to X-ray detection transmits high-pressure air from a pressurized air outlet to a shunt pipeline through an air blower, high-pressure gas is carried by pressure to impact the surface of the steel pipe piece through the opening gap on the surface of the lifting roller, thereby preliminarily contacting and cleaning the impurities on the surface of the workpiece in the self-rotating state, and the upper-end cleaning brush is driven to reciprocate forwards and backwards in cooperation with the limiting of the limiting rod and the limiting rod, thereby assisting in guiding and removing the surface residual impurities generated by the contact between the pressurized air outlet and the steel pipe piece, so that the detection is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel pipe weld detection, in particular to a spiral steel pipe weld defect detection device applied to X-ray detection. BACKGROUND

[0002] Spiral steel pipes have spiral welds at the annular welds, and the welds have complex geometry and many internal defects, so a high-efficiency and reliable radiographic testing (RT) system is needed to evaluate the weld quality. The X-ray detection device can efficiently and quantitatively evaluate the internal defects of the spiral steel pipe weld through high-resolution imaging and multi-angle scanning, ensuring the structural integrity and safety of the pipe weld.

[0003] In the prior art, when detecting the weld of a spiral steel pipe, the weld of the spiral steel pipe is cylindrical, and the weld is annular, which can easily lead to incomplete detection.

[0004] In order to overcome the above-mentioned deficiencies, the prior art (publication number CN215768318U) discloses a through-type double-sided spiral weld steel pipe weld X-ray detection device, which is used to solve the problem that the existing detection device cannot continuously pass through the steel pipe weld detection. The device includes a detection chamber and two feeding conveyor belts, the two feeding conveyor belts are respectively located outside the inlet and outlet of the detection chamber, a plurality of rotating assemblies and a lifting conveying assembly are arranged inside the detection chamber, and the lifting conveying assembly is arranged near the feeding port of the detection chamber. Two symmetrical walking tracks are arranged at the top of the detection chamber, and a mobile detection vehicle is arranged on the walking tracks. A radiation receiver and a radiation tube are respectively and adjustably arranged on the mobile detection vehicle. The lifting conveying assembly and the two feeding conveyor belts cooperate to form a through-type conveying spiral weld pipe, and continuously and efficiently perform detection and detection work, thereby reducing the length of the detection chamber, reducing the equipment floor area, reducing the construction cost, and greatly saving energy consumption.

[0005] In order to overcome the above-mentioned deficiencies, the prior art (publication number CN110361402B) discloses a line scanning type X-ray pipeline digital imaging detection device, which includes a detection device fixing ring, a radiation machine moving base, a radiation machine fixing device, a detector moving base, a detector dismounting device, a radiation machine, and a line array device. The detection device fixing ring is installed outside the steel pipe to be detected, the radiation machine and the line array device are respectively installed at the upper and lower ends of the detection device fixing ring, and are driven by the arc-shaped rack to make circular motion outside the steel pipe to be detected. At the same time, the X-ray is turned on for synchronous detection, the real-time imaging detection of the pipe butt weld is completed, the detection device not only overcomes the many drawbacks of the traditional film detection process and improves the detection efficiency, but also overcomes the defects of low guiding precision and poor detection effect of the imaging plate type X-ray pipeline detection technology, greatly reduces the price cost, and is more suitable for wide promotion and application.

[0006] While existing technologies can overcome the shortcomings mentioned above, other problems still exist during their operation. For example, when inspecting the weld seam of spiral steel pipes, some welding residues are easily left on the surface of the weld seam. If these residues accumulate on the surface of the weld seam during equipment inspection, they can easily affect the accuracy of the inspection. If the residues are not quickly removed, it will be inconvenient to adjust the position of the X-ray inspection later, and it will also have a significant secondary impact on the accuracy of the inspection. Summary of the Invention

[0007] The purpose of this invention is to provide a flaw detection device for spiral steel pipe welds applied to X-ray inspection, in order to solve the problem mentioned in the background art that when inspecting spiral steel pipe welds, some welding residues are easily left on the surface of the weld. If these residues accumulate on the surface of the weld during equipment inspection, they can easily affect the accuracy of the inspection. If the residues are not quickly removed, it will be inconvenient to adjust the position of the X-ray inspection later, and will also have a significant secondary impact on the accuracy of the inspection.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A flaw detection device for spiral steel pipe weld defects applied to X-ray inspection includes a base and a movable platform mounted on the upper end of the base. A steel pipe is provided on the upper end of the base. A rotatable roller and a lifting roller are rotatably mounted on the upper end of the movable platform, and the rotatable roller and the lifting roller are located below the steel pipe. A pressurized air outlet is installed inside the lifting roller, and a guiding and cleaning component for rapid contact with residues on the surface of the steel pipe is provided inside the device. A vertical plate is provided in the middle of the movable platform, and an auxiliary conduction flaw detection and cleaning mechanism is provided between the vertical plate and the upper end of the movable platform.

[0010] Furthermore, the inner side of the base is equipped with a radiation generator via a guide rail assembly, and a radiation receiver is installed inside the steel pipe. A hydraulic adjustment rod is installed through the right side of the base, and a connecting rod is installed at the output end of the hydraulic adjustment rod. The left end of the connecting rod is fixedly connected to the radiation receiver, and the radiation receiver corresponds to the radiation generator. The movable platform is connected to the base via another set of guide rail assemblies.

[0011] Furthermore, the guide and clearing component is equipped with a blower, and the middle end of the blower is fixedly installed in the middle end of the base. The output end of the blower is connected to a diversion pipe, and a diversion valve is provided on the outside of the diversion pipe. An inclined passage pipe and a pressurized air outlet are respectively connected to the outside of the diversion valve, and the inclined passage pipe and the pressurized air outlet are staggered.

[0012] The inner side of the lifting roller is slidably connected to a movable vibrating plate via a grooved plate, and a vibrating ball is provided at the middle end of the movable vibrating plate corresponding to one side of the lifting roller. A vibrating spring is provided between the end of the movable vibrating plate and the lifting roller.

[0013] Furthermore, the front and rear heights of the agitator roller and the lifting roller are corresponding, the middle end of the lifting roller is broken, and the surface of the lifting roller has openings at equal intervals. The end of the agitator roller is driven by a motor.

[0014] Furthermore, the lifting roller has two grooves inside, and a first roller is tumblingly connected inside the groove. A horizontal plate is installed on the upper end of the first roller, a support rod is installed on the upper end of the horizontal plate, a balance bar is installed on the upper end of the support rod, and second rollers are installed on the left and right sides of the balance bar. The outer sides of the left and right ends of the second rollers fit into the inside of the groove.

[0015] Furthermore, the flaw detection and cleaning mechanism is equipped with a cleaning brush, and the upper end of the cleaning brush is attached to the lower end surface of the steel pipe fitting.

[0016] Furthermore, a parallel plate is installed on the upper end of the upright plate, and a return spring is provided between the upper end of the parallel plate and the cleaning brush. A damper is installed through the middle of the parallel plate, and the upper output end of the damper is installed at the lower end of the cleaning brush.

[0017] Furthermore, a reciprocating screw is rotatably mounted on the upper end of the movable platform, and a reciprocating thread is provided at the middle end of the reciprocating screw. A movable plate is threadedly mounted at the middle end of the reciprocating screw, and the upper end of the movable plate is fixedly connected to the bottom of the upright plate. The front end of the reciprocating screw is connected to the output end of another motor.

[0018] Furthermore, limit rods are installed through the left and right sides of the movable plate, and the front and rear ends of the limit rods are fixedly installed on the upper end of the movable platform.

[0019] Furthermore, a rotating rod is installed at the rear end of the reciprocating screw via a bevel gear set, and the left and right ends of the rotating rod are rotatably mounted on the upper end of the movable platform 2. The left and right sides of the rotating rod form a synchronous rotation structure with the lifting roller through pulleys and belts.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. During operation, a blower transmits high-pressure air through the pressurized outlet into the distribution pipe. The high-pressure gas, carrying pressure, passes through the opening gaps on the surface of the lifting roller and impacts the surface of the steel pipe fitting. This provides initial contact cleaning of impurities on the rotating workpiece surface. Simultaneously, the reciprocating screw inside the equipment drives the movable plate to move. Combined with the limiting action of the movable plate and the limit rod, this causes the cleaning brush at the upper end to move back and forth, thus assisting in the removal of residual impurities generated when the pressurized outlet contacts the steel pipe fitting. This facilitates flaw detection. More accurate, and when the pressurized air outlet comes into contact with residual weld seams on the surface of the steel pipe fitting during operation, the air ejected from the pressurized air outlet will first pass through the gaps inside the steel pipe fitting, thus pre-cleaning the impurities accumulated in the through gaps. After the accumulated impurities are cleaned, the residual weld seams will be exposed, and the high-pressure air force will then create airflow noise inside the steel pipe fitting, allowing the user to accurately determine the location of the weld seams on the surface of the steel pipe fitting, thus increasing the accuracy of the inspection during the flaw detection process.

[0022] Furthermore, when the blower delivers airflow, the diversion valve can control the opening and closing of the diversion pipe. When both channels are open, both the inclined pipe and the pressurized outlet are connected, allowing the staggered inclined pipe and pressurized outlet to deliver gas separately. This enables the diversion valve to switch freely under pressure. When a single pipe is needed to deliver airflow at high pressure, the side connected to the inclined pipe is closed, which strengthens the pressure at the pressurized outlet, further increasing the pressure and improving the accuracy of the sprayed pressure and detection.

[0023] Furthermore, as the reciprocating screw rotates, it drives the lifting roller to rotate via the rotating rod. While assisting the rotation of the steel pipe, the lifting roller continuously contacts the welding slag on the surface of the steel pipe through the opening edge of the lifting roller, thereby scraping off the residual welding slag. Combined with the subsequent movable cleaning brush structure, it effectively performs self-cleaning treatment on the residual welding slag, further improving the cleaning effect.

[0024] Furthermore, as the gas ejected from the inclined pipe comes into contact with the inner wall of the lifting roller, and the movable vibrating plate on the inner side of the lifting roller aligns with the position of the inclined pipe, the pressurized airflow pushes the movable vibrating plate. When the movable vibrating plate on the inner side of the lifting roller passes the air outlet of the inclined pipe, it vibrates due to the elastic force of the vibration spring. This causes the impurities scraped off the surface of the lifting roller to fall off under the action of vibration, reducing the amount of welding slag remaining on the lifting roller.

[0025] 2. When inspecting weld defects of spiral steel pipes with X-rays, the rotation of the agitator roller can drive the steel pipe to rotate under the rotation of the support roller, thereby enabling comprehensive inspection of the spiral steel pipe weld. At the same time, the positions of the X-ray generator and X-ray receiver can be moved synchronously, allowing for adjustment of the appropriate inspection position, facilitating operation by staff, and expanding the inspection range.

[0026] Furthermore, when the pressurized air outlet is spraying gas, the outer sides of the first and second rollers fit into the grooves inside the lifting roller. With the support of the cross plate and the balance bar, the rotation of the lifting roller is prevented from affecting the position of the pressurized air outlet, so that the pressurized air outlet can stably deliver gas and improve stability.

[0027] Furthermore, under the pressure of the return spring, the cleaning brush can adhere to the bottom of the steel pipe fitting without affecting the rotation of the steel pipe fitting. It can automatically clean the surface of the steel pipe fitting as it rotates, making the inspection of weld defects in spiral steel pipes more accurate.

[0028] 3. When the reciprocating screw rotates, it can drive the movable plate to move under the setting of the reciprocating thread in the middle. The left and right sides of the movable plate can move back and forth under the limit of the limit rod. The reciprocating movement of the movable plate drives the vertical plate fixedly connected to the upper end, so that the cleaning brush at the upper end can also swing back and forth, further improving the cleaning effect and further improving the accuracy of flaw detection. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below.

[0031] Figure 3 This is a side view of the three-dimensional structure of the present invention.

[0032] Figure 4 This is a side sectional view of the three-dimensional structure of the steel pipe fitting of the present invention.

[0033] Figure 5 This is a cross-sectional three-dimensional structural diagram of the X-ray receiver of the present invention.

[0034] Figure 6 This is a cross-sectional three-dimensional structural diagram of the lifting roller of the present invention.

[0035] Figure 7 This is a side sectional view of the three-dimensional structure of the support rod of the present invention.

[0036] Figure 8 This is a cross-sectional three-dimensional structural diagram of the reset spring of the present invention.

[0037] Figure 9 This is a three-dimensional structural diagram of the rotating rod of the present invention.

[0038] Figure 10 This is a top-view three-dimensional structural diagram of the reciprocating screw of the present invention.

[0039] Figure 11 This is a side view of the three-dimensional structure of the inclined through-pipe of the present invention.

[0040] Figure 12 This is a top-section three-dimensional structural diagram of the vibration spring of the present invention.

[0041] Figure 13 This is a three-dimensional structural diagram of the diversion valve of the present invention.

[0042] Figure 14 This is a top-view three-dimensional structural diagram of the connection between the movable vibrating plate and the grooved plate of the present invention.

[0043] Figure 15 This is a bottom-view three-dimensional structural diagram of the connection between the movable vibrating plate and the grooved plate of the present invention.

[0044] In the diagram: 1. Base; 2. Movable platform; 3. Guide rail assembly; 4. Steel pipe fittings; 5. Diverter valve; 6. X-ray generator; 7. Hydraulic adjusting rod; 8. Connecting rod; 9. X-ray receiver; 10. Inclined through pipe; 11. Movable vibrating plate; 12. Actuating roller; 13. Lifting roller; 14. Blower; 15. Diverter pipe; 16. Horizontal plate; 17. First roller; 18. Support rod; 19. Balance bar; 20. Second roller; 21. Pressurized air outlet; 22. Vertical plate; 23. Parallel plate; 24. Return spring; 25. Cleaning brush; 26. Damper; 27. Movable plate; 28. Rotating rod; 29. ​​Bevel gear set; 30. Reciprocating screw; 31. Limiting rod; 32. Vibration spring; 33. Groove plate. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example 1: As Figures 1-15The technical solution shown is a flaw detection device for spiral steel pipe weld seams applied to X-ray inspection. To solve the problem of poor detection accuracy, it discloses: a base 1 and a movable platform 2 installed on the upper end of the base 1; a steel pipe component 4 is provided on the upper end of the base 1; a rotatable roller 12 and a lifting roller 13 are rotatably installed on the upper end of the movable platform 2, and the rotatable roller 12 and the lifting roller 13 are located below the steel pipe component 4; a pressurized air outlet 21 is installed inside the lifting roller 13; and a guiding and cleaning component for rapid contact with residues on the surface of the steel pipe is provided inside the device; an X-ray generator 6 is installed on the inner side of the base 1 through a guide rail assembly 3; and an X-ray receiver 9 is provided inside the steel pipe component 4. A hydraulic adjusting rod 7 is installed through the right side of the base 1, and a connecting rod 8 is installed at the output end of the hydraulic adjusting rod 7. The left end of the connecting rod 8 is fixedly connected to the X-ray receiver 9, and the X-ray receiver 9 corresponds to the X-ray generator 6. The movable platform 2 is connected to the base 1 through another set of guide rail assemblies 3. The guide cleaning component is equipped with a blower 14, and the middle end of the blower 14 is fixedly installed at the middle end of the base 1. The output end of the blower 14 is connected to a diversion pipe 15. A diversion valve 5 is provided at the end of the diversion pipe 15, and the end of the diversion valve 5 is connected to an inclined pipe 10 and a pressurized air outlet 21, respectively. The inclined pipe 10 and the pressurized air outlet 21 are staggered.

[0047] A movable vibrating plate 11 is slidably connected to the inner side of the lifting roller 13 via a grooved plate 33. A vibrating ball is provided at the middle end of the movable vibrating plate 11 corresponding to one side of the lifting roller 13. A vibrating spring 32 is provided between the end of the movable vibrating plate 11 and the lifting roller 13. The front and rear heights of the actuating roller 12 and the lifting roller 13 are corresponding, and the middle end of the lifting roller 13 is disconnected. Openings are evenly spaced on the surface of the lifting roller 13. The end of the actuating roller 12 is driven by a motor. Two grooves are correspondingly provided inside the lifting roller 13, and rolling connections are made inside the grooves. The first roller 17 has a horizontal plate 16 installed at its upper end, a support rod 18 installed at its upper end, a balance bar 19 installed at its upper end, and second rollers 20 installed on the left and right sides of the balance bar 19. The outer sides of the left and right ends of the second rollers 20 fit into the groove. Since the rollers themselves have gravity, and the balance bar 19 and the support rod 18, plus the gravity of the inclined pipe 10 and the pressurized air outlet 21 at the upper end, can be stable, so the pressurized air outlet 21 will not shake when the air is sprayed.

[0048] During testing, the movable platform 2 is moved left and right by the guide rail assembly 3 at the bottom of the base 1. The guide rail assembly 3 includes an electric slide rail and an electric slider. The electric slider on the surface of the electric slide rail drives the movable platform 2 connected to it. The movement of the movable platform 2 can move the steel pipe 4 placed on top. The steel pipe 4 is placed on the upper end of the rotating roller 12 and the lifting roller 13 on the upper end of the base 1. At this time, the connecting rod 8 can be moved left and right by the hydraulic adjusting rod 7. The movement of the connecting rod 8 drives the X-ray receiver 9 to move. The X-ray generator 6 corresponds to the X-ray receiver 9 and can move synchronously. By controlling the movement of the X-ray generator 6 and the X-ray receiver 9, both are aligned with the weld seam on the surface of the steel pipe 4. At this time, the emitted X-rays will detect the corresponding shape. The signal is transmitted to the X-ray receiver 9. The X-ray generator 6, also known as the X-ray source or X-ray machine, generates high-energy X-rays that penetrate the steel pipe. The X-ray receiver 9, or detector, receives the X-rays after they penetrate the steel pipe and converts them into signals that can be recorded and observed, revealing defects and effectively detecting flaws in threaded steel pipes. Simultaneously, by activating the motor at the end of the actuating roller 12, the roller rotates, causing the steel pipe 4 to rotate under the support of the lifting roller 13. This allows for adjustment of the weld position, enabling comprehensive inspection and expanding the inspection range. Furthermore, by activating the blower 14, air is drawn through the diverter pipe. The gas is conveyed from channel 15 to the pressurized air outlet 21. Gas ejected from the pressurized air outlet 21 passes through an opening on the surface of the lifting roller 13 and is sprayed onto the bottom surface of the steel pipe fitting 4. This avoids impurities affecting the accuracy of the detection. Inside the lifting roller 13, a horizontal plate 16 is installed via a first roller 17. The horizontal plate 16 limits the connection of the pipe and allows a balance bar 19 to be installed at its upper end via a support rod 18. Second rollers 20 are also installed on both sides of the balance bar 19. The outer sides of the first roller 17 and the second roller 20 are fitted into grooves inside the lifting roller 13, thus supporting the pressurized air outlet 21 and maintaining its stability, further improving the stability of the air jet. Simultaneously, when air is ejected from the pressurized air outlet 21, the weld seam of the steel pipe fitting 4 is also affected. There are gaps, and the blown air passes through these gaps into the interior of the steel pipe fitting 4. Since the welding of the steel pipe fitting 4 is done from the outside, there are fewer impurities inside. Therefore, the air entering from the gaps exposes the remaining weld seams, which, combined with the high-pressure airflow, creates airflow noise inside the steel pipe fitting 4. This allows the user to accurately determine the location of the weld seams on the surface of the steel pipe fitting 4, and to properly blow away impurities inside the steel pipe fitting 4, cleaning them evenly inside. At the same time, when the blower 14 delivers airflow, the diversion valve 5 controls the opening and closing of the diversion pipe 15. When the double channel at the upper fork of the diversion pipe 15 is open, both the inclined pipe 10 and the pressurized air outlet 21 are connected.This allows the staggered inclined pipes 10 and pressurized outlets 21 to deliver gas separately, enabling gas injection under pressure. The free switching of the diversion valve 5 allows for the closure of one side of the inclined pipe 10 when high-pressure gas delivery is required through a single pipe, thus increasing the pressure at the pressurized outlet 21 and further enhancing the injection pressure and detection accuracy. When the diversion valve 5 controls both sides of the diversion pipe 15 to open, the gas ejected from the inclined pipe 10 contacts the inner surface of the lifting roller 13. When the movable vibrating plate 11 on the inner side of the lifting roller 13 aligns with the inclined pipe 10, the increased airflow causes the movable vibrating plate 11 to slide along the groove plate 33. Under the action of the airflow, the movable vibrating plate 11 compresses the vibration spring 32. Conversely, when the movable vibrating plate 11 on the inner side of the lifting roller 13 passes the air outlet of the inclined pipe 10, it vibrates reciprocally under the elastic force of the vibration spring 32. This allows impurities scraped from the surface of the lifting roller 13 to fall off under the vibration, reducing the amount of welding slag remaining on the lifting roller 13.

[0049] Example 2: Figures 1-8 The technical solution shown, based on Embodiment 1, discloses the following to address the problem of easily residual impurities: a vertical plate 22 is provided at the middle of the movable platform 2, and an auxiliary transmission flaw detection and cleaning mechanism is provided between the vertical plate 22 and the upper end of the movable platform 2. The flaw detection and cleaning mechanism is provided with a cleaning brush 25, and the upper end of the cleaning brush 25 is attached to the lower end surface of the steel pipe fitting 4. A parallel plate 23 is installed at the upper end of the vertical plate 22, and a return spring 24 is provided between the upper end of the parallel plate 23 and the cleaning brush 25. A damper 26 is installed through the middle of the parallel plate 23, and the upper output end of the damper 26 is installed at the lower end of the cleaning brush 25.

[0050] A vertical plate 22 is set between the agitator roller 12 and the lifting roller 13. A return spring 24 is set at the upper end of the vertical plate 22 via a parallel plate 23. A cleaning brush 25 is connected to the upper end of the return spring 24. The upper end of the cleaning brush 25 is attached to the bottom of the steel pipe 4. A damper 26 is connected to the middle of the parallel plate 23. The upper end of the damper 26 is connected to the cleaning brush 25. Therefore, as the steel pipe 4 rotates, impurities on the surface of the steel pipe 4 can be automatically removed, further improving the impurity removal effect and increasing the accuracy of flaw detection during subsequent inspections.

[0051] Example 3: Figures 1-10The technical solution shown, based on Embodiment 2, discloses the following to address the problem of poor impurity cleaning effect: A reciprocating screw 30 is rotatably mounted on the upper end of the movable platform 2, and a reciprocating thread is provided at the middle end of the reciprocating screw 30. A movable plate 27 is threadedly mounted at the middle end of the reciprocating screw 30, and the upper end of the movable plate 27 is fixedly connected to the bottom of the upright plate 22. The front end of the reciprocating screw 30 is connected to the output end of another motor. Limiting rods 31 are installed through the left and right sides of the movable plate 27, and the front and rear ends of the limiting rods 31 are fixedly mounted on the upper end of the movable platform 2. A rotating rod 28 is mounted on the rear end of the reciprocating screw 30 through a bevel gear set 29, and the left and right ends of the rotating rod 28 are rotatably mounted on the upper end of the movable platform 2. The left and right sides of the rotating rod 28 form a synchronous rotation structure with the lifting roller 13 through pulleys and belts.

[0052] Driven by the motor at the end of the reciprocating screw 30, the reciprocating screw 30 rotates. During rotation, the reciprocating screw 30, with its reciprocating thread at the middle, moves the movable plate 27. The movable plate 27, limited by the limiting rod 31, can move back and forth on both sides. This back-and-forth movement of the movable plate 27 drives the upper fixedly connected vertical plate 22, causing the upper cleaning brush 25 to also oscillate back and forth, further improving the cleaning effect and the accuracy of flaw detection. Simultaneously, with the rotation of the reciprocating screw 30, the rear end... The bevel gear set 29 drives the rotating rod 28 to rotate. When the rotating rod 28 rotates, it drives the lifting roller 13 to rotate under the action of the belt and pulley. As the lifting roller 13 rotates, it assists the steel pipe 4 to rotate. At the same time, the weld seam of the steel pipe 4 is scraped through the opening of the lifting roller 13, so that the impurities at the weld seam of the steel pipe 4 can be further scraped off. This can further improve the accuracy of subsequent inspection. In conjunction with the subsequent movable cleaning brush 25 structure, it can effectively self-clean the remaining welding slag, further improving the cleaning effect.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flaw detection device for weld defects in spiral steel pipes applied to X-ray inspection, comprising a base (1) and a movable platform (2) mounted on the upper end of the base (1), wherein a steel pipe fitting (4) is provided on the upper end of the base (1); characterized in that: The upper end of the active platform (2) is rotatably equipped with a push roller (12) and a lifting roller (13), and the push roller (12) and the lifting roller (13) are located below the steel pipe (4). The lifting roller (13) is equipped with a pressurized air outlet (21), and the device is equipped with a guide and removal component for rapid contact with the residue on the surface of the steel pipe. The middle end of the active platform (2) is equipped with a vertical plate (22), and an auxiliary transmission flaw detection and cleaning mechanism is provided between the vertical plate (22) and the upper end of the active platform (2). The guide clearing component is equipped with a blower (14), and the middle end of the blower (14) is fixedly installed at the middle end of the base (1). The output end of the blower (14) is connected to a diversion pipe (15). A diversion valve (5) is provided on the outside of the diversion pipe (15). An inclined pipe (10) and a pressurized air outlet (21) are respectively connected on the outside of the diversion valve (5). The inclined pipe (10) and the pressurized air outlet (21) are staggered. The inner side of the lifting roller (13) is slidably connected to a movable vibrating plate (11) via a groove plate (33), and a vibrating ball is provided on the middle end of the movable vibrating plate (11) corresponding to one side of the lifting roller (13). A vibrating spring (32) is provided between the end of the movable vibrating plate (11) and the lifting roller (13). The agitator roller (12) and the lifting roller (13) are at the same height, and the middle of the lifting roller (13) is broken. The surface of the lifting roller (13) is provided with long strip-shaped openings at equal intervals. The end of the agitator roller (12) is driven by a motor.

2. The flaw detection device for spiral steel pipe weld seam using X-ray inspection as described in claim 1, characterized in that: The inner side of the base (1) is equipped with a radiation generator (6) via a guide rail assembly (3), and a radiation receiver (9) is provided inside the steel pipe (4). A hydraulic adjustment rod (7) is installed through the right side of the base (1), and a connecting rod (8) is installed at the output end of the hydraulic adjustment rod (7). The left end of the connecting rod (8) is fixedly connected to the radiation receiver (9), and the radiation receiver (9) corresponds to the radiation generator (6). The movable platform (2) is connected to the base (1) via another set of guide rail assemblies (3).

3. The spiral steel pipe weld defect detection device applied to X-ray inspection according to claim 1, characterized in that: The lifting roller (13) has two grooves inside, and a first roller (17) is rolled inside the groove. A horizontal plate (16) is installed on the upper end of the first roller (17), a support rod (18) is installed on the upper end of the horizontal plate (16), a balance rod (19) is installed on the upper end of the support rod (18), and a second roller (20) is installed on the left and right sides of the balance rod (19). The outer sides of the left and right ends of the second roller (20) fit into the inside of the groove.

4. The spiral steel pipe weld defect detection device applied to X-ray inspection according to claim 1, characterized in that: The flaw detection and cleaning mechanism is equipped with a cleaning brush (25), and the upper end of the cleaning brush (25) is attached to the lower end surface of the steel pipe fitting (4).

5. A flaw detection device for spiral steel pipe weld seams applied to X-ray inspection according to claim 4, characterized in that: A parallel plate (23) is installed on the upper end of the upright plate (22), and a return spring (24) is provided between the upper end of the parallel plate (23) and the cleaning brush (25). A damper (26) is installed through the middle end of the parallel plate (23), and the upper output end of the damper (26) is installed on the lower end of the cleaning brush (25).

6. The spiral steel pipe weld defect detection device applied to X-ray inspection according to claim 1, characterized in that: The upper end of the movable platform (2) is rotatably mounted with a reciprocating screw (30), and the middle end of the reciprocating screw (30) is provided with a reciprocating thread. The middle end of the reciprocating screw (30) is threaded with a movable plate (27), and the upper end of the movable plate (27) is fixedly connected to the bottom of the upright plate (22). The front end of the reciprocating screw (30) is connected to the output end of another motor.

7. A flaw detection device for spiral steel pipe weld seams applied to X-ray inspection according to claim 6, characterized in that: Limiting rods (31) are installed through the left and right sides of the movable plate (27), and the front and rear ends of the limiting rods (31) are fixedly installed on the upper end of the movable platform (2).

8. A flaw detection device for spiral steel pipe weld seams applied to X-ray inspection according to claim 7, characterized in that: The rear end of the reciprocating screw (30) is equipped with a rotating rod (28) via a bevel gear set (29), and the left and right ends of the rotating rod (28) are rotatably mounted on the upper end of the movable platform (2). The left and right sides of the rotating rod (28) are connected to the lifting roller (13) via pulleys and belts to form a synchronous rotation structure.

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