Acoustic emission flaw detection device for detecting surface quality of inner hole of alloy pipe

Abstract

The invention belongs to the technical field of detection, particularly relates to an acoustic emission flaw detection device for detecting the surface quality of an inner hole of an alloy pipe, and aims to solve the problem that the detection is inaccurate due to the fact that the device is easily influenced by the external environment in the existing detection process. The acoustic emission flaw detection device comprises a barrel for bearing the pipe, and the length of the barrel can be adjusted according to the length of the pipe; the length of the barrel body can be flexibly adjusted according to the length of the pipe, the device is suitable for containing the pipes of various specifications, the universality and practicability of the device are improved, and the device is convenient to use, high in practicability and suitable for popularization and application and has the beneficial effects that the length of the barrel body can be flexibly adjusted according to the length of the pipe, and the practicability of the device is improved. The pipe is located in the barrel and can be isolated from the outside, the influence of the external environment in the detection process is avoided, meanwhile, the double-end cleaning mechanism can comprehensively clean the outer wall and the inner wall of the pipe before detection, and the accuracy of the detection result is ensured.

Description

Technical Field

[0001] The invention relates 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. Background Art

[0002] Flaw detection is to detect cracks or defects on the surface or inside of the pipe. Commonly used 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 testing focuses on checking defects inside pipes. Its advantage is that it can accurately locate the position of defects and determine their size. Its disadvantage is that it takes a long time and requires high quality of equipment and operators. Eddy current testing is very effective for the outer surface and shallow defects of pipes, but it is ineffective for the inner surface and internal defects.

[0004] In addition, acoustic emission testing can detect the inner and outer walls of the pipe at the same time, 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 defect in the prior art that the detection process is easily affected by the external environment and causes inaccurate detection, and to propose an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: An acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe, comprising a cylinder carrying the pipe, the length of the cylinder can be adjusted according to the length of the pipe to be suitable for pipes of different lengths, the cylinder is provided with two support seats and a movable seat for supporting the cylinder, an electric push rod is penetrated through the cylinder, 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, the detector is connected to the sensor through a wire, and is used to receive 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 for sealing one end of the pipe, and a second sealing plate is provided at the other end of the cylinder for use in conjunction with a second cleaning mechanism. 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 air source through a pipeline for applying pressure to the pipe.

[0007] In a possible design, the cylinder body includes a first tube, a second tube is provided in the first tube for limiting sliding movement, a third tube is provided in the second tube for limiting sliding movement, the movable seat is fixedly sleeved on the outer wall of one end of the third tube, and the two support seats are respectively fixedly provided on the outer walls of both ends of the first tube, a first module is fixedly provided on the outer end of the first tube, a second module is fixedly provided on the outer end of the third tube, a through hole for the passage of pipes is provided on one side of the second module and the first module, guide wheels for supporting pipes are provided in the first tube, the second tube and the third tube, and the tops of the plurality of guide wheels are flush with the through holes, a rotating shaft is fixedly provided 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 position of the first sealing plate.

[0008] In a possible design, 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.

[0009] In a possible design, the second cleaning mechanism includes a second mounting seat fixedly arranged on the outside of 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, a first connecting tube is fixedly arranged through one end of the connecting tube, the first connecting tube is connected to an external air source through a pipeline, an end of the connecting tube close to the pipe is clamped with one end of the pipe through a clamping piece, a cleaning ball for cleaning the pipe is arranged 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.

[0010] In a possible design, the clamping member includes a limiting ring fixedly mounted on the outer wall of one end of the connecting tube, the limiting ring is semicircular, and the inner wall of the limiting ring is fixed with a plurality of positioning blocks corresponding to the grooves of the pipe, and the positioning blocks limit the connecting tube and the pipe when they are stuck in the grooves.

[0011] 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 to drive the second sealing plate to move.

[0012] In a possible design, a rotating ring is rotatably sleeved on the outer wall of the connecting tube, and placement holes are provided on the rotating ring and the outer wall of the connecting tube. When the two placement holes correspond to each other, they are used to place the cleaning ball into the connecting tube. When the two placement holes are misaligned, they are used to seal the connecting tube.

[0013] In a possible design, a support plate is fixedly provided on one side of the sliding seat, 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, a spring is sleeved on the outer wall of the sliding rod, two 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, a connecting block is fixedly provided on the bottom of the sliding rod, 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.

[0014] 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 provided inside the stainless steel outer shell, and sound insulation cotton is provided between the stainless steel outer shell and the stainless steel inner shell for soundproofing and sealing the interior thereof.

[0015] In a possible design, two first rotating seats are fixedly provided on one side of the support seat located on the right side, a storage roller is rotatably provided between the two first rotating seats, a pull rope is fixed to the outer wall of the storage roller and wrapped 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 fixedly provided on one side of one of the first rotating seats, a worm is rotatably provided between the two second rotating seats, and a worm gear is fixedly provided on the outer wall of the storage roller for driving the storage roller to rotate and locking the storage roller.

[0016] Beneficial effects: In the present invention, the acoustic emission flaw detection device for detecting the surface quality of the inner hole of the alloy pipe can be flexibly adjusted according to pipes of different lengths by designing a retractable cylinder (including a first cylinder, a second cylinder and a third cylinder), thereby improving the versatility and practicality of the device, reducing the cost and time of detecting pipes of different lengths, and the pipe is located in the cylinder, which can improve the detection accuracy and effectively avoid the influence of the external environment; In the present invention, the acoustic emission flaw detection device for detecting the surface quality of the inner hole of the alloy pipe can clean the outer wall of the pipe through two cleaning rings rotating in opposite directions through the first cleaning mechanism, and effectively avoids the rotation of the pipe during the cleaning process, thereby improving the cleaning efficiency; In the present invention, the acoustic emission flaw detection device for detecting the surface quality of the inner hole of the alloy pipe uses air pressure to push the cleaning ball to move inside the pipe through the second cleaning mechanism, thereby achieving comprehensive cleaning of the inner wall of the pipe, providing good detection conditions for subsequent acoustic emission flaw detection, and the pipe can be connected to the connecting tube through the setting of the clamping piece, which can effectively prevent the connecting tube from being separated from the pipe due to high air pressure; In the present invention, the acoustic emission flaw detection device for detecting the surface quality of the inner hole of the alloy pipe, through the sliding design of the sliding seat on the second mounting seat, and the cooperation of the positioning pin and the positioning groove, enables the second cleaning mechanism to be flexibly adjusted according to the length of different pipes and stably fixed at the required position, thereby improving the adaptability and stability of the device, and can be used in conjunction with the second sealing plate, without the need to operate the second sealing plate separately, thereby simplifying the operation steps; In the present invention, the length of the cylinder can be flexibly adjusted according to the length of the pipe, which is suitable for the placement of pipes of various specifications, thereby improving the versatility and practicality of the equipment. The pipe is located in the cylinder and can be isolated from the outside to avoid 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 to ensure the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe proposed by the present invention; Figure 2 A schematic diagram of the cross-sectional structure of a tube of an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy tube proposed by the present invention; Figure 3 This is a schematic structural diagram of a first cleaning mechanism of an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe proposed by the present invention; Figure 4 This is a schematic diagram of the structure of the second cleaning mechanism of an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe proposed by the present invention; Figure 5 This is a schematic diagram of the installation structure of a limit ring of an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe proposed by the present invention; Figure 6 This is a schematic diagram of the installation structure of a positioning rod of an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe proposed by the present invention; Figure 7 for Figure 1 A schematic diagram of the enlarged structure of the middle part A; Figure 8 for Figure 6 The enlarged structural diagram of the middle B part; Fig. 9 The present invention provides a schematic diagram of the cross-sectional structure of a tube end face of an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy tube.

[0018] In the figure: 1, cylinder; 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; 14, second tube; 15, third tube; 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, placement hole; 30, cleaning ball; 31, second sealing plate; 32, second connecting pipe; 33, limiting ring; 34, positioning block; 35, supporting frame; 36, sliding rod; 37, gasket; 38, spring; 39, connecting block; 40, first rotating seat; 41, storage roller; 42, pull rope; 43, second rotating seat; 44, worm; 45, worm wheel; 46, positioning pin; 47, positioning groove; 48, stainless steel outer shell; 49, sound insulation cotton; 50, stainless steel inner shell. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example 1: Reference Figure 1-Figure 9 , an acoustic emission flaw detection device, comprising: a cylinder 1 that carries a pipe, the length of the cylinder 1 can be adjusted according to the length of the pipe to adapt to pipes of different lengths. The cylinder 1 is composed of a first tube 13, a second tube 14 and a third tube 15, wherein the second tube 14 slides within the first tube 13, and the third tube 15 slides within the second tube 14. Such a design allows the length of the cylinder 1 to be flexibly adjusted. The movable seat 3 is fixedly sleeved on the outer wall of one end of the third tube 15, and two support seats 2 are respectively fixedly arranged on the outer walls of both ends of the first tube 13 to provide stable support for the cylinder 1.

[0021] A first module 16 is fixedly provided at the outer end of the first tube 13, and a second module 17 is fixedly provided at the outer end of the third tube 15. A through hole 18 for the pipe to pass through is provided on one side of the second module 17 and the first module 16. A guide wheel 22 is provided in the first tube 13, the second tube 14 and the third tube 15, and the top of the guide wheel 22 is flush with the through hole 18 to ensure that the pipe moves smoothly in the cylinder 1. A rotating shaft 19 is fixedly provided on one side of the first module 16, and 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, so that 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 at will.

[0022] An electric push rod 4 is provided through the cylinder 1, and a sensor 21 is fixedly provided at the output end of the electric push rod 4 for detecting the pipe. A mounting plate 5 is fixedly provided on one side of one of the support seats 2, and a detector 6 is provided on the mounting plate 5. The detector 6 is connected to the sensor 21 through a wire for receiving the detection signal. The detector 6 is composed of a preamplifier, a data acquisition card and a computer. The preamplifier is used to amplify the weak electrical signal output by the sensor to improve the signal-to-noise ratio and anti-interference ability of the signal. The data acquisition card is used to collect, store and analyze the electrical signal output by the sensor. The data acquisition card usually has the characteristics of high speed, high precision, and multi-channel, which can meet the needs of different application scenarios. The computer is used to process and analyze the data collected by the data acquisition card. The computer can run special software to filter, extract features, recognize patterns and other operations on the data, so as to realize the monitoring and evaluation of the internal damage state of the material or structure. The sensor 21 adopts a ring array high-frequency sensor, which is used to detect defects and damage inside the material. By receiving and processing high-frequency signals from inside the material, the nondestructive testing system can more accurately determine the integrity and reliability of the material.

[0023] A first cleaning mechanism is provided at one end of the cylinder 1, including a first mounting seat 7 fixedly provided on one side of the left support seat 2, and two cleaning rings 23 are rotatably provided through one side of the first mounting seat 7, which are used to clean the outer wall of the pipe. A connecting plate 24 is fixedly provided on the top of the first mounting seat 7, and a motor 25 is fixedly provided on the top of the connecting plate 24. A first gear 26 is fixedly provided on the output end of the motor 25, and a second gear 27 meshing with the first gear 26 is fixedly provided on the ends of the two cleaning rings 23 close to each other. When the motor 25 is working, the two cleaning rings 23 can be driven to rotate in the opposite direction, so as to clean the outer wall of the pipe and prevent the pipe from rotating during the cleaning process.

[0024] A second cleaning mechanism is provided at the other end of the cylinder 1, including a second mounting seat 8 fixedly arranged outside the movable seat 3, a sliding seat 9 slidingly arranged on the top of the second mounting seat 8, a connecting cylinder 11 is fixedly arranged on one side of the sliding seat 9, a first connecting pipe 12 is fixedly arranged on one end of the connecting cylinder 11, and the first connecting pipe 12 is connected to the external gas source through a pipeline. The end of the connecting cylinder 11 close to the pipe is clamped with one end of the pipe through a clamping member, and the clamping member includes a limit ring 33 fixedly sleeved on the outer wall of one end of the connecting cylinder 11, the limit ring 33 is semicircular, and a plurality of positioning blocks 34 are fixedly arranged on the inner wall of the limit ring 33, and the positioning blocks 34 can be stuck in the groove of the pipe, so as to limit the connection cylinder 11 and the pipe. A cleaning ball 30 is provided in the connecting cylinder 11, and when the external gas source inflates the connecting cylinder 11 through the first connecting pipe 12, the cleaning ball 30 can be driven to move in the pipe to clean the inner wall of the pipe.

[0025] A second sealing plate 31 is also provided at the other end of the cylinder 1, which is used to seal the other end of the pipe when the second cleaning mechanism is away from the pipe. A second connecting pipe 32 is fixedly provided 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, which is used to pressurize the pipe so as to observe the sealing and pressure bearing capacity of the pipe during the detection process.

[0026] The present application can be used in the field of pipe inspection, and can also be used in other fields applicable to the present application.

[0027] Example 2: Reference Figure 1-Figure 9 , improved on the basis of Example 1: an acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe, which is applied to the field of pipe inspection, in order to realize the connection between the sliding seat 9 and the second sealing plate 31, a support frame 35 is fixedly provided on one side of the sliding seat 9, and the second sealing plate 31 is fixedly provided 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.

[0028] In order to facilitate the placement of the cleaning ball 30 into the connecting tube 11, a rotating ring 28 is rotatably sleeved on the outer wall of the connecting tube 11, and placement holes 29 are provided on the rotating ring 28 and the outer wall of the connecting tube 11. When the two placement holes 29 correspond to each other, the cleaning ball 30 can be placed in the connecting tube 11; when the two placement holes 29 are misaligned, the rotating ring 28 can seal the connecting tube 11 to prevent gas leakage.

[0029] In order to limit the position of 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 provided on the top of the support plate 10. A gasket 37 is fixedly provided on the outer wall of the top of the sliding rod 36, and a spring 38 is provided on the outer wall of the sliding rod 36. The two ends of the spring 38 are respectively fixedly connected to the gasket 37 and the side of the support plate 10 close to each other. In this way, the elastic force of the spring 38 will drive the top of the sliding rod 36 to conflict with the outer wall of the rotating ring 28, so as to realize the positioning of the rotating ring 28. When the placement 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 conflict with the connecting tube 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 used in conjunction with the positioning pin 46 are provided 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.

[0030] To increase the sound insulation effect of the cylinder 1, the first tube 13, the second tube 14 and the third tube 15 all include a stainless steel outer shell 48, a stainless steel inner shell 50 is provided inside the stainless steel outer shell 48, and sound insulation cotton 49 is provided between the stainless steel outer shell 48 and the stainless steel inner shell 50. The provision of the sound insulation cotton 49 can effectively isolate the noise inside the cylinder 1, improve the quietness of the detection environment, and thus ensure the accuracy of the detection results.

[0031] In order to facilitate the reset and movement of the cylinder 1, two first rotating seats 40 are fixedly provided on one side of the support seat 2 located on the right side, and a receiving roller 41 is rotatably provided between the two first rotating seats 40. A pull rope 42 is fixedly provided on the outer wall of the receiving roller 41 and wound around it, and the other end of the pull rope 42 is fixedly connected to the moving seat 3. In this way, when the moving seat 3 needs to be reset, it can be achieved by rotating the receiving roller 41 to receive the pull rope 42. At the same time, two second rotating seats 43 are fixedly provided on one side of one of the first rotating seats 40, and a worm 44 is rotatably provided between the two second rotating seats 43. A worm gear 45 meshing with the worm 44 is fixedly provided on the outer wall of the receiving roller 41. When it is necessary to shorten the moving distance of the moving seat 3, the worm 44 can be rotated, and the receiving roller 41 can be driven to rotate through the worm gear 45, thereby tightening the pull rope 42 and locking the moving seat 3, so that the first sealing plate 20 and the second sealing plate 31 can be driven to approach the pipe at the same time and seal the two ends of the pipe. The drive of the worm 44 can be manually or with an additional motor drive as needed.

[0032] In the present application, when in use, one end of the pipe 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 the opposite direction so that the pipe will not be driven to rotate. The rotation of the second gear 27 can drive the cleaning ring 23 to rotate. The cleaning ring 23 can clean the outer wall of the pipe during the rotation process, and the pipe is pushed to move into the cylinder 1 during the cleaning process. When the pipe moves into the cylinder 1, it can be guided by the guide The wheel 22 guides and supports until one end of the pipe contacts the connecting tube 11, and then the worm 44 is rotated. The rotation of the worm 44 can drive the storage roller 41 to rotate through the meshing worm wheel 45. The rotation of the storage roller 41 can release the pull rope 42 on its outer wall, and then continue to push the pipe to move. At this time, the movement process can contact the connecting tube 11 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 is flush with the first module 16; 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; 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; 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.

[0033] 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.

[0034] 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 acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe, characterized in that: The invention comprises a cylinder (1) for carrying a pipe, wherein the cylinder (1) is provided with two support seats (2) and a movable seat (3) for supporting the cylinder (1), wherein an electric push rod (4) is provided through the cylinder (1), wherein a sensor (21) for detecting the pipe is fixedly provided at the output end of the electric push rod (4), wherein a mounting plate (5) is fixedly provided on one side of one of the support seats (2), wherein a detector (6) is provided on the mounting plate (5), and wherein the detector (6) is connected to the sensor (21) via a wire for receiving a detection signal; A first cleaning mechanism, arranged at one end of the cylinder (1) and used for cleaning the outer wall of the pipe; A second cleaning mechanism is arranged at the other end of the cylinder (1) and is used to clean the inner wall of the pipe; A first sealing plate (20) is provided at one end of the cylinder (1) for sealing one end of the pipe, and a second sealing plate (31) is provided at the other end of the cylinder (1) for use in conjunction with a second cleaning mechanism. When the second cleaning mechanism is away from the pipe, the second sealing plate (31) seals the other end of the pipe. A second connecting pipe (32) is fixedly provided through one side of the second sealing plate (31). The second connecting pipe (32) is connected to an external gas source through a pipeline and is used to apply pressure to the pipe.

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 cylinder (1) comprises a first tube (13), a second tube (14) is provided in a limited position and sliding manner inside the first tube (13), a third tube (15) is provided in a limited position and sliding manner inside the second tube (14), the movable seat (3) is fixedly sleeved on an outer wall of one end of the third tube (15), the two support seats (2) are respectively fixedly provided on the outer walls of both ends of the first tube (13), a first module (16) is fixedly provided on the outer end of the first tube (13), a second module (17) is fixedly provided on the outer end of the third tube (15), the second module (17) and the first module (16) are fixedly provided on the outer end of the third tube (15), and the second module (17) and the first module (16) are fixedly provided on the outer end of the third tube (15). A through hole (18) for the pipe to pass through is provided on one side of the block (16); guide wheels (22) for supporting the pipe are provided in the first tube (13), the second tube (14) and the third tube (15); and the tops of the plurality of guide wheels (22) are flush with the through hole (18); a rotating shaft (19) is fixedly provided on one side of the first module (16); the first sealing plate (20) is rotatably sleeved on the rotating shaft (19); and a certain resistance is provided between the first sealing plate (20) and the rotating shaft (19) for limiting the position of the first sealing plate (20).

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 comprises a first mounting seat (7) fixedly arranged on one side of the left support seat (2); two cleaning rings (23) for cleaning the outer wall of the pipe are rotatably provided through one side of the first mounting seat (7); a connecting plate (24) is fixedly arranged on the top of the first mounting seat (7); a motor (25) is fixedly arranged on the top of the connecting plate (24); a first gear (26) is fixedly arranged on the output end of the motor (25); and a second gear (27) meshing with the first gear (26) is fixedly arranged on the ends of the two cleaning rings (23) close to each other, so as to drive the two cleaning rings (23) 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: The second cleaning mechanism comprises a second mounting seat (8) fixedly arranged outside the movable seat (3); a sliding seat (9) is slidably arranged on the top of the second mounting seat (8); a connecting tube (11) is fixedly arranged through one side of the sliding seat (9); a first connecting tube (12) is fixedly arranged through one end of the connecting tube (11); the first connecting tube (12) is connected to an external air source through a pipeline; an end of the connecting tube (11) close to the pipe is clamped with one end of the pipe through a clamping piece; a cleaning ball (30) for cleaning the pipe is arranged inside the connecting tube (11); the cleaning ball (30) is driven by air pressure to move inside the pipe 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 clamping member comprises a limiting ring (33) fixedly sleeved on the outer wall of one end of the connecting tube (11); the limiting ring (33) is semicircular in shape; a plurality of positioning blocks (34) corresponding to the grooves of the pipe are fixedly provided on the inner wall of the limiting ring (33); the positioning blocks (34) limit the connection tube (11) and the pipe when they are clamped in the grooves.

6. 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: A support frame (35) is fixedly provided on one side of the sliding seat (9), and the second sealing plate (31) is fixedly provided on the top of the support frame (35) to drive the second sealing plate (31) to move.

7. 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: The outer wall of the connecting tube (11) is rotatably sleeved with a rotating ring (28), and the rotating ring (28) and the outer wall of the connecting tube (11) are both provided with placement holes (29). When the two placement holes (29) correspond to each other, a cleaning ball (30) is placed in the connecting tube (11); when the two placement holes (29) are misaligned, the connecting tube (11) is sealed.

8. The acoustic emission flaw detection device for detecting the surface quality of the inner hole of an alloy pipe according to claim 7, characterized in that: A support plate (10) is fixedly provided on one side of the sliding seat (9), a sliding rod (36) is slidably provided on 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), a spring (38) is sleeved on the outer wall of the sliding rod (36), two ends of the spring (38) are respectively fixedly connected to the gasket (37) and the side of the support plate (10) close to each other, and are used to drive the top of the sliding rod (36) to contact the outer wall of the rotating ring (28), a connecting block (39) is fixedly provided on the bottom of the sliding rod (36), and a positioning pin (46) is fixedly provided on the top of the connecting block (39), and three positioning grooves (47) used in conjunction with the positioning pin (46) are provided on the bottom of the second mounting seat (8) to limit the sliding seat (9) at different positions.

9. 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: The first tube (13), the second tube (14) and the third tube (15) all comprise a stainless steel outer shell (48), a stainless steel inner shell (50) being provided inside the stainless steel outer shell (48), and sound insulation cotton (49) being provided between the stainless steel outer shell (48) and the stainless steel inner shell (50) for sound insulation and sealing the interior thereof.

10. 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 (40) are fixedly provided on one side of the support seat (2) located on the right side, and a storage roller (41) is rotatably provided between the two first rotating seats (40). A pull rope (42) is fixed to and wound around the outer wall of the storage roller (41), and the other end of the pull rope (42) is fixedly connected to the moving seat (3) and is used to limit the moving position of the moving seat (3). Two second rotating seats (43) are fixedly provided on one side of one of the first rotating seats (40), and a worm (44) is rotatably provided between the two second rotating seats (43). A worm wheel (45) meshing with the worm (44) is provided on the outer wall fixed sleeve of the storage roller (41) and is used to drive the storage roller (41) to rotate and lock the storage roller (41).

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