An acoustic emission flaw detection device for detecting the internal hole surface quality of alloy pipe

Abstract

The present invention belongs to the field of detection technology, and in particular to an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe. Aiming at the problem that the existing detection process is easily affected by the external environment and leads to inaccurate detection, the following scheme is proposed, which includes a cylinder body supporting the pipe, the length of the cylinder body can be adjusted according to the length of the pipe so as to be suitable for pipes of different lengths, the cylinder body is provided with two support seats and a movable seat for supporting the cylinder body, and the cylinder body is penetrated by an electric push rod. In the present invention, the length of the cylinder body can be flexibly adjusted according to the length of the pipe, and is suitable for placing pipes of various specifications, thereby improving the versatility and practicality of the equipment, and the pipe is located in the cylinder body and can be isolated from the outside to avoid being affected by the external environment during the detection process. At the same time, a double-end cleaning mechanism can comprehensively clean the outer wall and the inner wall of the pipe before detection to ensure the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of detection, and particularly relates to an acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes. Background Art

[0002] Flaw detection is to detect cracks or defects on the surface or inside of pipes. Common flaw detection methods include: X-ray flaw detection, ultrasonic flaw detection, magnetic particle flaw detection, penetrant flaw detection, eddy current flaw detection, R-ray flaw detection and other methods.

[0003] Ultrasonic flaw detection focuses on checking defects inside the pipes. Its advantages are that it can accurately locate the position of the defects and determine their size, while its disadvantages are that it takes a long time and has high requirements for equipment and operator quality. Eddy current flaw detection is very effective for the outer surface and shallow defects of pipes, but ineffective for inner surface and internal defects.

[0004] In addition, acoustic emission detection can detect both the inner and outer walls of pipes simultaneously, but it is easily affected by the external environment during the detection process, resulting in inaccurate detection. Summary of the Invention

[0005] The purpose of the present invention is to solve the drawback that it is easily affected by the external environment during the detection process in the prior art, resulting in inaccurate detection, and to propose an acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes.

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

[0007] An acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes, including a cylinder body for carrying the pipes, the length of the cylinder body can be adjusted according to the length of the pipes to be applicable to pipes of different lengths, two support seats and a moving seat are provided on the cylinder body for supporting the cylinder body, an electric push rod is penetrated through the cylinder body, the output end of the electric push rod is fixedly provided with a sensor for detecting the pipes, one side of one of the support seats is fixedly provided with a mounting plate, a detector is provided on the mounting plate, and the detector is connected to the sensor through a wire for receiving detection signals;

[0008] A first cleaning mechanism is arranged at one end of the cylinder body for cleaning the outer wall of the pipes;

[0009] A second cleaning mechanism is arranged at the other end of the cylinder body for cleaning the inner wall of the pipes;

[0010] One end of the cylinder body is provided with a first sealing plate for sealing one end of the pipe. The other end of the cylinder body is provided with a second sealing plate for cooperating with the second cleaning mechanism. When the second cleaning mechanism is away from the pipe, the second sealing plate seals the other end of the pipe. One side of the second sealing plate is fixedly provided with a second connecting pipe through which is connected to an external air source through a pipeline for applying pressure to the pipe.

[0011] In a possible design, the cylinder body includes a first pipe barrel. A second pipe barrel is slidably limited in the first pipe barrel. A third pipe barrel is slidably limited in the second pipe barrel. The moving seat is fixedly sleeved on the outer wall of one end of the third pipe barrel. The two supporting seats are respectively fixedly arranged on the outer walls of the two ends of the first pipe barrel. The outer end of the first pipe barrel is fixedly provided with a first module. The outer end of the third pipe barrel is fixedly provided with a second module. Through holes for the pipe to pass through are formed on one sides of the second module and the first module. Guide wheels for supporting the pipe are arranged in the first pipe barrel, the second pipe barrel and the third pipe barrel, and the tops of the plurality of guide wheels are flush with the through holes. A rotating shaft is fixedly arranged on one side of the first module. The first sealing plate is rotatably sleeved on the rotating shaft, and there is a certain resistance between the first sealing plate and the rotating shaft for limiting the first sealing plate.

[0012] In a possible design, the first cleaning mechanism includes a first mounting seat fixedly arranged on one side of the left supporting seat. Two cleaning rings for cleaning the outer wall of the pipe are rotatably arranged through one side of the first mounting seat. A connecting plate is fixedly arranged on the top of the first mounting seat. A motor is fixedly arranged on the top of the connecting plate. The output end of the motor is fixedly provided with a first gear. Second gears meshing with the first gear are fixedly arranged at the mutually close ends of the two cleaning rings for driving the two cleaning rings to rotate in opposite directions to prevent the pipe from rotating.

[0013] In a possible design, the second cleaning mechanism includes a second mounting seat fixedly arranged on the outside of the moving seat. A sliding seat is slidably arranged on the top of the second mounting seat. A connecting cylinder is fixedly arranged through one side of the sliding seat. A first connecting pipe is fixedly arranged through one end of the connecting cylinder. The first connecting pipe is connected to an external air source through a pipeline. One end of the connecting cylinder close to the pipe is clamped to one end of the pipe through a clamping member. A cleaning ball for cleaning the pipe is arranged in the connecting cylinder, and the cleaning ball is driven by air pressure to move in the pipe to realize the cleaning of the inner wall of the pipe.

[0014] In a possible design, the clamping member includes a limiting ring fixedly sleeved on the outer wall of one end of the connecting cylinder. The limiting ring is semicircular. A plurality of positioning blocks corresponding to the grooves of the pipe are fixedly arranged on the inner wall of the limiting ring. When the positioning blocks are stuck in the grooves, the connecting cylinder and the pipe are limited.

[0015] In a possible design, a support frame is fixedly provided on one side of the sliding seat, and the second sealing plate is fixedly provided on the top of the support frame for driving the second sealing plate to move.

[0016] In a possible design, a rotating ring is rotatably sleeved on the outer wall of the connecting cylinder. Placing holes are formed in the outer walls of the rotating ring and the connecting cylinder. When the two placing holes correspond to each other, a cleaning ball can be placed into the connecting cylinder. When the two placing holes are misaligned, the connecting cylinder is sealed.

[0017] In a possible design, a support plate is fixedly provided on one side of the sliding seat. A sliding rod penetrates through the top of the support plate. A gasket is fixedly sleeved on the outer wall of the top end of the sliding rod. A spring is sleeved on the outer wall of the sliding rod. The two ends of the spring are respectively fixedly connected to the mutually approaching sides of the gasket and the support plate for driving the top of the sliding rod to abut against the outer wall of the rotating ring. A connecting block is fixedly provided at the bottom of the sliding rod. A positioning pin is fixedly provided on the top of the connecting block. Three positioning grooves for cooperating with the positioning pin are formed at the bottom of the second mounting seat for limiting the sliding seat at different positions.

[0018] In a possible design, the first tube, the second tube and the third tube all include a stainless steel outer shell. A stainless steel inner shell is arranged inside the stainless steel outer shell. Sound insulation cotton is arranged between the stainless steel outer shell and the stainless steel inner shell for sound insulation and sealing inside.

[0019] In a possible design, two first rotating seats are fixedly provided on one side of the support seat on the right side. A storage roller is rotatably arranged between the two first rotating seats. A pull rope is fixedly wound around the outer wall of the storage roller. The other end of the pull rope is fixedly connected to the moving seat for limiting the moving position of the moving seat. Two second rotating seats are fixedly provided on one side of one of the first rotating seats. A worm is rotatably arranged between the two second rotating seats. A worm gear meshing with the worm is fixedly sleeved on the outer wall of the storage roller for driving the storage roller to rotate and locking the storage roller.

[0020] Beneficial effects: In the present invention, for the acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes, by designing a telescopic cylinder body (including the first tube, the second tube and the third tube), it can be flexibly adjusted according to pipes of different lengths, thereby improving the versatility and practicability of the device, reducing the cost and time for detecting pipes of different lengths, and the pipes located inside the cylinder body can improve the detection accuracy and effectively avoid the influence of the external environment;

[0021] In the present invention, for the acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes, the first cleaning mechanism enables the outer wall of the pipe to be cleaned by two reversely rotating cleaning rings, and effectively avoids the rotation of the pipe during the cleaning process, improving the cleaning efficiency;

[0022] In the present invention, for the acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes, the second cleaning mechanism uses air pressure to push the cleaning ball to move inside the pipe, achieving a comprehensive cleaning of the inner wall of the pipe, providing good detection conditions for subsequent acoustic emission flaw detection, and the connection between the pipe and the connecting cylinder can be achieved through the setting of the clamping part, effectively preventing the connecting cylinder from separating from the pipe due to large air pressure;

[0023] In the present invention, for the acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes, through the sliding design of the sliding seat on the second mounting seat and the cooperation of the positioning pin and the positioning groove, the second cleaning mechanism can be flexibly adjusted according to the length of different pipes and stably fixed at the required position, improving the adaptability and stability of the device. At the same time, it can cooperate with the second sealing plate, eliminating the need for separate operation of the second sealing plate and simplifying the operation steps;

[0024] In the present invention, the length of the cylinder can be flexibly adjusted according to the length of the pipe, suitable for placing pipes of various specifications, improving the versatility and practicality of the equipment. And the pipe located inside the cylinder can be isolated from the outside, avoiding being affected by the external environment during the detection process. At the same time, the double-end cleaning mechanism can comprehensively clean the outer wall and inner wall of the pipe before detection, ensuring the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of an acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes proposed by the present invention;

[0026] Figure 2 is a sectional structural schematic diagram of the tube of an acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes proposed by the present invention;

[0027] Figure 3 is a structural schematic diagram of the first cleaning mechanism of an acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes proposed by the present invention;

[0028] Figure 4 is a structural schematic diagram of the second cleaning mechanism of an acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes proposed by the present invention;

[0029] Figure 5 is a structural schematic diagram of the limit ring installation of an acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes proposed by the present invention;

[0030] Figure 6 Schematic diagram of the installation structure of the positioning rod of an acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes proposed by the present invention;

[0031] Figure 7 is Figure 1 Schematic diagram of the enlarged structure of part A in

[0032] Figure 8 is Figure 6 Schematic diagram of the enlarged structure of part B in

[0033] Figure 9 Schematic diagram of the end face sectional view of the tube barrel of an acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes proposed by the present invention.

[0034] In the figure: 1, cylinder body; 2, support seat; 3, moving seat; 4, electric push rod; 5, mounting plate; 6, detector; 7, first mounting seat; 8, second mounting seat; 9, sliding seat; 10, support plate; 11, connecting cylinder; 12, first connecting pipe; 13, first tube barrel; 14, second tube barrel; 15, third tube barrel; 16, first module; 17, second module; 18, through hole; 19, rotating shaft; 20, first sealing plate; 21, sensor; 22, guide wheel; 23, cleaning ring; 24, connecting plate; 25, motor; 26, first gear; 27, second gear; 28, rotating ring; 29, placing hole; 30, cleaning ball; 31, second sealing plate; 32, second connecting pipe; 33, limiting ring; 34, positioning block; 35, support frame; 36, sliding rod; 37, gasket; 38, spring; 39, connecting block; 40, first rotating seat; 41, storage roller; 42, pulling rope; 43, second rotating seat; 44, worm; 45, worm gear; 46, positioning pin; 47, positioning groove; 48, stainless steel outer shell; 49, sound insulation cotton; 50, stainless steel inner shell. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0036] Embodiment 1: Refer to Figures 1-9, An acoustic emission flaw detection device, comprising: a cylinder body 1 for carrying a pipe. The length of the cylinder body 1 can be adjusted according to the length of the pipe to adapt to pipes of different lengths. The cylinder body 1 is composed of a first pipe cylinder 13, a second pipe cylinder 14, and a third pipe cylinder 15. Among them, the second pipe cylinder 14 is limited to slide within the first pipe cylinder 13, and the third pipe cylinder 15 is limited to slide within the second pipe cylinder 14. Such a design enables the length of the cylinder body 1 to be flexibly adjusted. A moving seat 3 is fixedly sleeved on the outer wall of one end of the third pipe cylinder 15, and two support seats 2 are respectively fixedly arranged on the outer walls of both ends of the first pipe cylinder 13 to provide stable support for the cylinder body 1.

[0037] A first module 16 is fixedly arranged at the outer end of the first pipe cylinder 13, and a second module 17 is fixedly arranged at the outer end of the third pipe cylinder 15. Through holes 18 for the pipe to pass through are provided on one side of both the second module 17 and the first module 16. Guide wheels 22 are arranged inside the first pipe cylinder 13, the second pipe cylinder 14, and the third pipe cylinder 15. The tops of the guide wheels 22 are flush with the through holes 18 to ensure the stable movement of the pipe within the cylinder body 1. A rotating shaft 19 is fixedly arranged on one side of the first module 16. A first sealing plate 20 is rotatably sleeved on the rotating shaft 19, and there is a certain resistance between the first sealing plate 20 and the rotating shaft 19. In this way, the sealing of one end of the pipe can be achieved, and the first sealing plate 20 can be limited to prevent it from rotating randomly.

[0038] An electric push rod 4 penetrates through the cylinder body 1. The output end of the electric push rod 4 is fixedly provided with a sensor 21 for detecting the pipe. An installation plate 5 is fixedly arranged on one side of one of the support seats 2. A detector 6 is arranged on the installation plate 5. The detector 6 is connected to the sensor 21 through a wire for receiving detection signals. The detector 6 is composed of a preamplifier, a data acquisition card, and a computer. Preamplifier: used to amplify the weak electrical signals output by the sensor, improve the signal-to-noise ratio and anti-interference ability of the signals. Data acquisition card: used to collect, store, and analyze the electrical signals output by the sensor. The data acquisition card usually has characteristics such as high speed, high precision, and multiple channels, and can meet the requirements of different application scenarios. Computer: used to process and analyze the data collected by the data acquisition card. The computer can run special software to perform operations such as filtering, feature extraction, and pattern recognition on the data, so as to realize the monitoring and evaluation of the internal damage state of materials or structures. The sensor 21 adopts a ring array high-frequency sensor, and the ring array high-frequency sensor is used to detect defects and damages inside the material. By receiving and processing high-frequency signals from inside the material, the non-destructive testing system can more accurately judge the integrity and reliability of the material.

[0039] At one end of the cylinder body 1, a first cleaning mechanism is provided, which includes a first mounting seat 7 fixedly arranged on one side of the left support seat 2. Two cleaning rings 23 are rotatably arranged through one side of the first mounting seat 7 for cleaning the outer wall of the pipe. A connecting plate 24 is fixedly arranged on the top of the first mounting seat 7, and a motor 25 is fixedly arranged on the top of the connecting plate 24. A first gear 26 is fixedly arranged at the output end of the motor 25. Second gears 27 meshing with the first gear 26 are fixedly arranged at the mutually approaching ends of the two cleaning rings 23. When the motor 25 works, it can drive the two cleaning rings 23 to rotate in opposite directions, capable of cleaning the outer wall of the pipe and preventing the pipe from rotating during the cleaning process.

[0040] At the other end of the cylinder body 1, a second cleaning mechanism is provided, which includes a second mounting seat 8 fixedly arranged outside the moving seat 3. A sliding seat 9 is slidably arranged on the top of the second mounting seat 8. A connecting cylinder 11 is fixedly arranged through one side of the sliding seat 9. One end of the connecting cylinder 11 is fixedly arranged through a first connecting pipe 12, and the first connecting pipe 12 is connected to an external air source through a pipeline. One end of the connecting cylinder 11 close to the pipe is clamped with one end of the pipe through a clamping member. The clamping member includes a limiting ring 33 fixedly sleeved on the outer wall of one end of the connecting cylinder 11. The limiting ring 33 is semicircular, and a plurality of positioning blocks 34 are fixedly arranged on the inner wall of the limiting ring 33. The positioning blocks 34 can be stuck in the grooves of the pipe, thereby limiting the connecting cylinder 11 and the pipe. A cleaning ball 30 is arranged in the connecting cylinder 11. When the external air source inflates the connecting cylinder 11 through the first connecting pipe 12, it can drive the cleaning ball 30 to move in the pipe, realizing the cleaning of the inner wall of the pipe.

[0041] At the other end of the cylinder body 1, a second sealing plate 31 is further provided for sealing the other end of the pipe when the second cleaning mechanism is far away from the pipe. A second connecting pipe 32 is fixedly arranged through one side of the second sealing plate 31, and the second connecting pipe 32 is connected to an external air source through a pipeline for pressing the pipe to observe the sealing performance and pressure-bearing capacity of the pipe during the detection process.

[0042] This application can be used in the field of pipe detection and other fields applicable to this application.

[0043] Embodiment 2: Refer to Figures 1-9 , on the basis of Embodiment 1, an improvement is made: An acoustic emission flaw detection device for detecting the inner hole surface quality of alloy pipes, which is applied to the field of pipe detection. To realize the connection between the sliding seat 9 and the second sealing plate 31, a support frame 35 is fixedly arranged on one side of the sliding seat 9, and the second sealing plate 31 is fixedly arranged on the top of the support frame 35. In this way, when the sliding seat 9 slides on the second mounting seat 8, the second sealing plate 31 will move accordingly, thereby realizing the sealing or opening of the other end of the pipe.

[0044] To facilitate the insertion of the cleaning ball 30 into the connecting cylinder 11, a rotating ring 28 is rotatably sleeved on the outer wall of the connecting cylinder 11, and placing holes 29 are formed in the outer walls of both the rotating ring 28 and the connecting cylinder 11. When the two placing holes 29 correspond to each other, the cleaning ball 30 can be placed into the connecting cylinder 11; when the two placing holes 29 are misaligned, the rotating ring 28 can seal the connecting cylinder 11 to prevent gas leakage.

[0045] To limit the sliding seat 9, a support plate 10 is fixedly provided on one side of the sliding seat 9, and a sliding rod 36 is slidably arranged through the top of the support plate 10. A gasket 37 is fixedly sleeved on the outer wall of the top end of the sliding rod 36, and a spring 38 is sleeved on the outer wall of the sliding rod 36. The two ends of the spring 38 are fixedly connected to the mutually adjacent sides of the gasket 37 and the support plate 10 respectively. In this way, the elastic force of the spring 38 drives the top of the sliding rod 36 to abut against the outer wall of the rotating ring 28 to position the rotating ring 28. When the placing hole 29 on the rotating ring 28 rotates to the bottom, the top of the sliding rod 36 can move upward under the action of the spring 38 to abut against the connecting cylinder 11. At the same time, a connecting block 39 is fixedly provided at the bottom of the sliding rod 36, and a positioning pin 46 is fixedly provided on the top of the connecting block 39. Three positioning grooves 47 for cooperating with the positioning pin 46 are formed at the bottom of the second mounting seat 8. When the sliding seat 9 slides to different positions, the positioning pin 46 can be inserted into the corresponding positioning groove 47 under the action of the spring 38 to limit the sliding seat 9.

[0046] To enhance the sound insulation effect of the cylinder body 1, the first pipe cylinder 13, the second pipe cylinder 14, and the third pipe cylinder 15 all include a stainless steel outer shell 48, a stainless steel inner shell 50 is arranged inside the stainless steel outer shell 48, and a sound insulation cotton 49 is arranged between the stainless steel outer shell 48 and the stainless steel inner shell 50. The arrangement of the sound insulation cotton 49 can effectively isolate the noise inside the cylinder body 1, improve the quietness of the detection environment, and thus ensure the accuracy of the detection results.

[0047] To facilitate driving the cylinder body 1 to reset and move, two first rotating seats 40 are fixedly provided on one side of the support seat 2 on the right side. A storage roller 41 is rotatably provided between the two first rotating seats 40. A pulling rope 42 is fixedly wound around the outer wall of the storage roller 41. The other end of the pulling rope 42 is fixedly connected to the moving seat 3. In this way, when the moving seat 3 needs to be reset, the pulling rope 42 can be taken in by rotating the storage roller 41. At the same time, two second rotating seats 43 are fixedly provided on one side of one of the first rotating seats 40. A worm 44 is rotatably provided between the two second rotating seats 43. A worm gear 45 meshing with the worm 44 is fixedly sleeved on the outer wall of the storage roller 41. When it is necessary to shorten the moving distance of the moving seat 3, the worm 44 can be rotated, and the storage roller 41 can be driven to rotate through the worm gear 45, so as to tighten the pulling rope 42 and realize the locking of the moving seat 3, so that the first sealing plate 20 and the second sealing plate 31 can be driven to approach the pipe material at the same time and seal the two ends of the pipe material. The driving of the worm 44 can be manual or motor-driven according to needs.

[0048] In this application, during use, one end of the pipe material is placed in the outer cleaning ring 23, and then the motor 25 is started to drive the first gear 26 to rotate. During the rotation of the first gear 26, the two second gears 27 can be driven to rotate. Since the first gear 26 is located between the two second gears 27, the two second gears 27 can be driven to rotate in opposite directions, so that the pipe material will not be driven to rotate. The rotation of the second gear 27 can drive the cleaning ring 23 to rotate. During the rotation of the cleaning ring 23, the outer wall of the pipe material can be cleaned. During the cleaning process, the pipe material is pushed into the cylinder body 1. When the pipe material moves into the cylinder body 1, it can be guided and supported by the guide wheel 22 until one end of the pipe material abuts against the connecting cylinder 11. Then the worm 44 is rotated. The rotation of the worm 44 can drive the storage roller 41 to rotate through the engaged worm gear 45. The rotation of the storage roller 41 can release the pulling rope 42 on its outer wall. At this time, the pipe material is continuously pushed to move. During this movement, the connecting cylinder 11 can be abutted to drive the sliding seat 9 to move. The movement of the sliding seat 9 can drive the moving seat 3 to move. The movement of the moving seat 3 can drive the third tube 15 to slide in the second tube 14 and the second tube 14 to slide in the first tube 13 until one end of the pipe material is flush with the first module 16;

[0049] Then push the sliding seat 9 to move on the second mounting seat 8, the movement of the sliding seat 9 can drive the connecting tube 11 to move, and the movement of the connecting tube 11 can drive the limiting ring 33 to move toward the pipe until the positioning block 34 is stuck in the groove of the pipe, so that the connecting tube 11 can be connected to the pipe, and then the cleaning ball 30 is placed in the connecting tube 11 through the two placement holes 29, and then the rotating ring 28 is rotated to make the two placement holes 29 offset from each other to seal the connecting tube 11, until the placement hole 29 on the rotating ring 28 is rotated to the bottom, at this time, the sliding rod 36 can move upward under the action of the spring 38, so that the sliding rod 36 The top of the connecting tube 11 contacts the outer wall of the connecting tube 11, limiting the rotating ring 28, and the sliding rod 36 can also drive the connecting block 39 to move upward during the upward movement, and the upward movement of the connecting block 39 can drive the positioning pin 46 to insert into the corresponding positioning groove 47, and finally open the valve on the external air source, and the air source enters the connecting tube 11 through the pipeline and the first connecting tube 12. When the air pressure reaches a certain pressure, the cleaning ball 30 can be pushed into the pipe. The cleaning ball 30 can clean the inner wall of the pipe during the movement in the pipe until the cleaning ball 30 moves out from the other end of the pipe;

[0050] Then, the rotating ring 28 is rotated in the opposite direction to make the two placement holes 29 correspond to each other, and the sliding rod 36 is driven to move downward, driving the positioning pin 46 to disengage from the corresponding positioning groove 47, and then the sliding seat 9 is pushed to move on the second mounting seat 8 to make the limiting ring 33 away from the pipe, and then the moving seat 3 is pulled outward to drive the third tube 15 to move until the outer end of the second module 17 is flush with one end of the pipe, and then the sliding seat 9 is continued to be pushed to move on the second mounting seat 8, and the second sealing plate 31 can be driven to move to one end of the pipe through the support frame 35, and the first sealing plate 20 at one end of the first tube 13 is rotated to seal the other end of the pipe, and finally the worm 44 is rotated in the opposite direction. The reverse rotation of the worm 44 can drive the storage roller 41 to rotate through the meshing worm gear 45, and the rotation of the storage roller 41 can store the pull rope 42, and can drive the moving seat 3 to reset and move until the first sealing plate 20 and the second sealing plate 31 clamp the two ends of the pipe;

[0051] Then open another valve on the external gas source, and the gas can enter the pipe through the second connecting pipe 32 until the gas pressure in the pipe reaches the set value. Then start the electric push rod 4 to extend and drive the sensor 21 to move downward, so that the sensor 21 fits on the surface of the pipe and is detected by the detector 6.

[0052] However, as is well known to those skilled in the art, the working principles and wiring methods of the electric push rod 4, detector 6, sensor 21 and motor 25 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience.

[0053] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. An acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe, characterized in that: It includes a cylinder body for carrying pipes, two support seats and a movable seat are provided on the cylinder body for supporting the cylinder body, an electric push rod is passed through the cylinder body, a sensor for detecting the pipe is fixedly provided at the output end of the electric push rod, a mounting plate is fixedly provided on one side of one of the support seats, a detector is provided on the mounting plate, and the detector is connected to the sensor through a wire for receiving a detection signal; A first cleaning mechanism is arranged at one end of the cylinder body and is used for cleaning the outer wall of the pipe; A second cleaning mechanism is provided at the other end of the cylinder body and is used for cleaning the inner wall of the pipe; A first sealing plate is provided at one end of the cylinder body for sealing one end of the pipe, and a second sealing plate used in conjunction with a second cleaning mechanism is provided at the other end of the cylinder body. When the second cleaning mechanism is away from the pipe, the second sealing plate seals the other end of the pipe. A second connecting pipe is fixedly provided through one side of the second sealing plate. The second connecting pipe is connected to an external gas source through a pipeline and is used to pressurize the pipe so as to observe the sealing and pressure bearing capacity of the pipe during the detection process. The cylinder body comprises a first tube, a second tube is provided in the first tube for limited sliding, a third tube is provided in the second tube for limited sliding, and a movable seat is fixedly sleeved on an outer wall of one end of the third tube; The second cleaning mechanism comprises a second mounting seat fixedly arranged outside the movable seat, a sliding seat is slidably arranged on the top of the second mounting seat, a connecting tube is fixedly arranged through one side of the sliding seat, and an end of the connecting tube close to the pipe is clamped with one end of the pipe through a clamping piece; The clamping member includes a limiting ring fixedly sleeved on the outer wall of one end of the connecting tube, the limiting ring is semicircular, and a plurality of positioning blocks corresponding to the grooves of the pipe are fixedly provided on the inner wall of the limiting ring, and the positioning blocks limit the connecting tube and the pipe when they are clamped in the grooves; A support frame is fixedly provided on one side of the sliding seat, and the second sealing plate is fixedly provided on the top of the support frame to drive the second sealing plate to move; The first tube, the second tube and the third tube all include a stainless steel outer shell, a stainless steel inner shell is arranged inside the stainless steel outer shell, and sound insulation cotton is arranged between the stainless steel outer shell and the stainless steel inner shell for sound insulation and sealing of the interior.

2. The acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe according to claim 1 is characterized in that: The two support seats are respectively fixed on the outer walls of both ends of the first tube, the first module is fixed on the outer end of the first tube, and the second module is fixed on the outer end of the third tube. One side of the second module and the first module are provided with through holes for the passage of pipes. The first tube, the second tube and the third tube are all provided with guide wheels for supporting the pipes, and the tops of the multiple guide wheels are flush with the through holes. A rotating shaft is fixed on one side of the first module, and the first sealing plate is rotatably sleeved on the rotating shaft, and there is a certain resistance between the first sealing plate and the rotating shaft for limiting the first sealing plate.

3. The acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe according to claim 1 is characterized in that: The first cleaning mechanism includes a first mounting seat fixedly arranged on one side of the left support seat, two cleaning rings for cleaning the outer wall of the pipe are rotatably provided through one side of the first mounting seat, a connecting plate is fixedly arranged on the top of the first mounting seat, a motor is fixedly arranged on the top of the connecting plate, a first gear is fixedly arranged on the output end of the motor, and a second gear meshing with the first gear is fixedly arranged on the ends of the two cleaning rings close to each other, so as to drive the two cleaning rings to rotate in opposite directions to prevent the pipe from rotating.

4. The acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe according to claim 1, characterized in that: A first connecting pipe is fixedly provided at one end of the connecting tube, and the first connecting pipe is connected to an external gas source through a pipeline. A cleaning ball for cleaning the pipe is provided in the connecting tube, and the cleaning ball is driven to move in the pipe by air pressure to clean the inner wall of the pipe.

5. The acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe according to claim 4, characterized in that: The outer wall of the connecting tube is rotatably sleeved with a rotating ring, and the rotating ring and the outer wall of the connecting tube are both provided with placement holes. When the two placement holes correspond, the cleaning ball is placed in the connecting tube. When the two placement holes are misaligned, they are used to seal the connecting tube.

6. The acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe according to claim 5, characterized in that: A support plate is fixedly provided on one side of the sliding seat, and a sliding rod is slidably provided on the top of the support plate, a gasket is fixedly sleeved on the outer wall of the top end of the sliding rod, and a spring is sleeved on the outer wall of the sliding rod, and both ends of the spring are respectively fixedly connected to the gasket and the side close to each other of the support plate, so as to drive the top of the sliding rod to contact the outer wall of the rotating ring, and a connecting block is fixedly provided on the bottom of the sliding rod, and a positioning pin is fixedly provided on the top of the connecting block, and three positioning grooves used in conjunction with the positioning pin are provided at the bottom of the second mounting seat to limit the sliding seat at different positions.

7. The acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe according to claim 2, characterized in that: Two first rotating seats are fixedly provided on one side of the support seat located on the right side, and a storage roller is rotatably provided between the two first rotating seats. The outer wall of the storage roller is fixed and a pull rope is wound around it. The other end of the pull rope is fixedly connected to the moving seat for limiting the moving position of the moving seat. Two second rotating seats are fixed on one side of one of the first rotating seats, and a worm is rotatably provided between the two second rotating seats. A worm gear is fixedly provided on the outer wall of the storage roller and meshed with the worm gear for driving the storage roller to rotate and lock the storage roller.

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