A phased array ultrasonic testing device

Abstract

This utility model relates to a phased array ultrasonic testing device. The main frame includes a connecting part, a connecting block at the top of the connecting part, and first support arms on both sides of the connecting block. A caster wheel is connected to the end of each first support arm away from the connecting block. Connecting arms are also provided on both sides of the bottom of the connecting part, with a second support arm hinged to the end of each connecting arm away from the connecting part. A wheel assembly is connected to the end of each second support arm away from the connecting arm. A transverse connecting rod slides through the inside of the connecting block, and a first detection component is fixedly connected to the end of the transverse connecting rod away from the connecting block. A longitudinal connecting rod is fixedly connected to the inner side of one of the second support arms, and a second detection component is slidably connected to the side of the longitudinal connecting rod away from the second support arm. This mechanical structure allows for testing inside the corner joint between the tube seat and the housing. The inner walls of the tube seat and the housing are scanned simultaneously, ensuring no defects are missed. It is independent of manual labor, has high accuracy and efficiency, and provides stable relative position and coupling of the probe.

Description

Technical Field

[0001] This utility model relates to the field of weld inspection technology, and in particular to a phased array ultrasonic inspection device. Background Technology

[0002] Fillet welds are a common structure in pressure vessels and other special equipment. The quality of these welds is a crucial factor affecting the safe production of pressure vessels. Due to their complex structure, high welding difficulty, and large welding restraint stress, fillet welds are prone to defects such as incomplete fusion of the bevel and cold cracks. To ensure weld quality, non-destructive testing must be performed at critical points such as after welding or after heat treatment to detect any potential defects in the weld.

[0003] Phased array ultrasonic testing is an ultrasonic testing method that excites the independent piezoelectric crystals of the array probe according to a set delay rule, synthesizes the sound beam, and realizes the functions of moving, deflecting and focusing the sound beam. Then, the received ultrasonic signal is processed according to a certain delay rule and the internal state of the inspected object is displayed in the form of an image. Compared with traditional ultrasonic testing and X-ray testing, it has higher detection sensitivity and reliability. At present, the new version of GB150 "Pressure Vessels" has recommended phased array ultrasonic testing technology as the inspection technology for fillet welds of pipe seats.

[0004] To ensure weld quality and in accordance with relevant standards, the corner joint between the pipe seat and the shell should be scanned from the outer wall of the shell, the inner wall of the pipe seat, and the inner wall of the shell to ensure that no defects are missed. Existing pipe seat corner weld scanning devices are mainly chain-type structures, suitable only for mechanical scanning with the probe placed on the outer wall of the shell. Scanning the inner wall of the pipe seat and the inner wall of the shell relies solely on manual scanning with a handheld probe, which is detrimental to the stability of the probe's relative position and coupling state. Therefore, there is an urgent need to design a detection device that can be used for mechanical scanning of the inner wall of the pipe seat and the inner wall of the shell. Utility Model Content

[0005] To address the problem that mechanical scanning of the inner walls of the tube socket and the shell is detrimental to the relative position stability and coupling stability of the probe during phased array testing of the corner joint between the tube socket and the shell, a phased array ultrasonic testing device is proposed.

[0006] The technical solution of this utility model is as follows: a phased array ultrasonic testing device includes a main frame, the main frame includes a connecting part, a connecting block is provided at the top of the connecting part, and first support arms are respectively provided on both sides of the connecting block. The end of the first support arm away from the connecting block is connected to a caster wheel. Connecting arms are respectively provided on both sides of the bottom of the connecting part. The end of the connecting arm away from the connecting part is hinged to a second support arm, and the end of the second support arm away from the connecting arm is connected to a wheel assembly. A transverse connecting rod is slidably inserted inside the connecting block, and the end of the transverse connecting rod away from the connecting block is fixedly connected to a first detection component. A longitudinal connecting rod is fixedly connected to the inner side of one of the second support arms, and the side of the longitudinal connecting rod away from the second support arm is slidably connected to a second detection component.

[0007] Preferably, the connecting block is provided with a first latch to fix the position of the transverse connecting rod.

[0008] Preferably, the first detection component includes a first connector, one end of the transverse link away from the connecting block is connected to the first connector, one end of the first connector away from the transverse link is connected to a first clamping arm, and the other end of the first clamping arm is connected to a first probe.

[0009] Preferably, the first connector includes a first sliding rod and a first fixing block. One end of the first fixing block is connected to a transverse connecting rod. The side of the first fixing block away from the transverse connecting rod is provided with a groove. One side of the first sliding rod is provided with a track. The first sliding rod is slidably connected to the groove of the first fixing block through the track. The end of the first sliding rod near the housing is connected to a first clamping arm.

[0010] Preferably, the first fixed block is provided with first elastic elements on opposite sides, one end of the first elastic element is connected to the first fixed block, and the other end of the first elastic element is connected to the end of the first sliding rod away from the housing.

[0011] Preferably, the second detection component includes a locking slider, a groove is provided on the side of the longitudinal connecting rod away from the second support arm, a track is provided on one side of the locking slider, the locking slider is slidably connected to the groove of the longitudinal connecting rod through the track, and the locking slider is provided with a second latch to fix the position of the second detection component.

[0012] Preferably, the second detection component includes a second connector, the side of the locking slider away from the longitudinal link is connected to the second connector, the end of the second connector away from the locking slider is connected to a second clamping arm, and the other end of the second clamping arm is connected to a second probe.

[0013] Preferably, the second connector includes a second sliding stop and a second fixing block. A locking slider is connected to one side of the second fixing block, and a groove is provided on the side of the second fixing block away from the locking slider. A track is provided on one side of the second sliding rod, and the second sliding rod is slidably connected to the groove of the second fixing block through the track. The end of the second sliding rod near the inner wall of the tube seat is connected to a second clamping arm.

[0014] Preferably, the top and bottom surfaces of the second fixing block are respectively provided with a second elastic element, one end of the second elastic element is connected to the second fixing block, and the other end of the second elastic element is connected to the end of the second sliding rod away from the inner wall of the tube seat.

[0015] Preferably, the first fixing block has a handle on the side away from the first sliding rod.

[0016] The beneficial effects of this utility model are as follows: This utility model provides a phased array ultrasonic testing device, which can be placed inside the corner joint between the tube seat and the shell for testing using this mechanical structure. The inner wall of the tube seat and the inner wall of the shell are scanned simultaneously to ensure that no defects are missed. It does not rely on manual labor, has high testing accuracy, high testing efficiency, and stable relative position and coupling state of the probe. Attached Figure Description

[0017] Figure 1 This is a perspective view of the phased array ultrasonic testing device of this utility model;

[0018] Figure 2 This is a perspective view of the phased array ultrasonic testing device of this utility model from another angle;

[0019] Figure 3 This is a perspective view of the phased array ultrasonic testing device of this utility model from another angle;

[0020] Figure 4 This is a side view of the phased array ultrasonic testing device of this utility model;

[0021] Figure 5 This is a front view of the first detection component of this utility model;

[0022] Figure 6 This is a side view of the first detection component of this utility model;

[0023] Figure 7 This is a top view of the second detection component of this utility model;

[0024] Figure 8 This is a front view of the second detection component of this utility model.

[0025] The component names corresponding to the various reference numerals in the diagram are as follows:

[0026] 1. Main frame; 11. Connecting part; 12. Connecting block; 13. First support arm; 14. Connecting arm; 15. Second support arm; 16. Caster wheel; 17. Wheel set; 2. Longitudinal link; 3. Lateral link; 4. First detection component; 41. First probe; 42. First clamping arm; 43. First connector; 431. First sliding rod; 432. First fixing block; 44. First elastic element; 5. Second detection component; 51. Second probe; 52. Second clamping arm; 53. Second connector; 531. Second sliding rod; 532. Second fixing block; 54. Second elastic element; 55. Locking slider; 551. Second latch; 6. First latch; 7. Handle; 8. Tube seat; 9. Housing. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0028] refer to Figure 1 , 4 As shown in the figure, this application discloses a phased array ultrasonic testing device, including a main frame 1. The main frame 1 includes a connecting part 11, a connecting block 12 is provided at the top of the connecting part 11, and first support arms 13 are respectively provided on both sides of the connecting block 12. The end of the first support arm 13 away from the connecting block 12 is threadedly connected to a universal wheel 16. The bottom two sides of the connecting part 11 are respectively provided with connecting arms 14, and the end of the connecting arm 14 away from the connecting part 11 is hinged to a second support arm 15. The second support arm 15 swings horizontally with this connection point as the center. One end of the connecting arm 14 is threaded to the wheel assembly 17; the connecting block 12 has a through hole, through which a transverse connecting rod 3 passes. The transverse connecting rod 3 can move horizontally within the connecting block 12 to adjust the distance. The end of the transverse connecting rod 3 away from the connecting block 12 is fixedly connected to the first detection component 4; the inner side of one of the second support arms 15 is fixedly connected to the longitudinal connecting rod 2 by bolts. The side of the longitudinal connecting rod 2 away from the second support arm 15 is slidably connected to the second detection component 5. The second detection component 5 can adjust the vertical distance by sliding up and down through the longitudinal connecting rod 2.

[0029] Both the caster wheel 16 and the wheel set 17 are magnetic components. When the main frame 1 is installed on the tube seat 8, the wheel set 17 is attracted to the inner surface of the ferromagnetic tube seat 8, and the caster wheel 16 is attracted to the end face of the ferromagnetic tube seat 8. The caster wheel 16 can adjust its direction according to the diameter of the tube seat 8. The magnetic attraction of the two prevents the axial positional displacement of the tube seat 8 when the main frame 1 moves in a circumferential direction.

[0030] Furthermore, the caster wheel 16 can be connected to a position encoder to record the circumferential position of the probe relative to the tube seat 8.

[0031] refer to Figure 2 , 5 As shown in Figures 6 and 7, the connecting block 12 is provided with a first latch 6, and the transverse connecting rod 3 is fixed to the main frame 1 through the first latch 6.

[0032] More specifically, opening the first latch 6 allows the transverse connecting rod 3 to move horizontally relative to the main frame 1, thereby changing the distance between the phased array probe and the tube seat 8. This distance depends on the requirements of the phased array ultrasonic testing process.

[0033] Specifically, the first detection component 4 includes a first connector 43. The end of the transverse link 3 away from the connecting block 12 is connected to the first connector 43 by bolts. The end of the first connector 43 away from the transverse link 3 is connected to the first clamping arm 42. The other end of the first clamping arm 42 is connected to the first probe 41.

[0034] The first connector 43 includes a first sliding rod 431 and a first fixing block 432. One end of the first fixing block 432 is connected to the transverse connecting rod 3 by a thread. The side of the first fixing block 432 away from the transverse connecting rod 3 is provided with a groove. One side of the first sliding rod 431 is provided with a track. The first sliding rod 431 is slidably connected to the groove of the first fixing block 432 through the track. The end of the first sliding rod 431 near the housing 9 is connected to the first clamping arm 42, so that the first sliding rod 431 can slide vertically along the side of the first fixing block 432.

[0035] First elastic elements 44 are provided on opposite sides of the first fixing block 432. One end of the first elastic element 44 is connected to the first fixing block 432, and the other end of the first elastic element 44 is connected to the end of the first sliding rod 431 away from the housing 9. In this embodiment, the first elastic element 44 is a spring.

[0036] More specifically, during testing, the first probe 41 passes through the inner wall surface of the housing 9. Since the inner wall surface of the housing 9 has a curvature and the first elastic element 44 is kept in a passively stretched state, its reverse force keeps the first sliding rod 431 always extending towards the inner wall of the housing 9, thereby keeping the first clamping arm 42 extending towards the inner wall of the housing 9, and finally keeping the first probe 41 always in close contact with the inner wall surface of the housing 9 to obtain a stable coupling effect.

[0037] refer to Figure 3 , 7As shown in Figure 8, specifically, the second detection component 5 includes a locking slider 55. The longitudinal connecting rod 2 has a groove on the side away from the second support arm 15, and a track is provided on one side of the locking slider 55. The locking slider 55 is slidably connected to the groove of the longitudinal connecting rod 2 through the track. The locking slider 55 can slide in the groove of the longitudinal connecting rod 2. The locking slider 55 is provided with a second latch 551, and the longitudinal connecting rod 2 is fixed to the locking slider 55 through the second latch 551.

[0038] More specifically, by opening the second latch 551 and moving the locking slider 55 up and down, the second detection component 5 can be displaced axially relative to the main frame 1 along the inner wall of the tube seat 8, thereby changing the axial position of the inner wall of the phased array probe tube seat 8. This position depends on the actual axial position of the weld and the requirements of the phased array ultrasonic testing process.

[0039] The second detection component 5 includes a second connector 53. The side of the locking slider 55 away from the longitudinal connecting rod 2 is connected to the second connector 53 by bolts. The end of the second connector 53 away from the locking slider 55 is connected to the second clamping arm 52, and the other end of the second clamping arm 52 is connected to the second probe 51.

[0040] The second connector 53 includes a second sliding stop 533 and a second fixing block 532. One side of the second fixing block 532 is connected to a locking slider 55 by a thread. The side of the second fixing block 532 away from the locking slider 55 is provided with a groove. One side of the second sliding rod 531 is provided with a track. The second sliding rod 531 is slidably connected to the groove of the second fixing block 532 through the track. The end of the second sliding rod 531 near the inner wall of the tube seat 8 is connected to the second clamping arm 52, so that the second sliding rod 531 can slide horizontally along the side of the second fixing block 532.

[0041] The top and bottom surfaces of the second fixing block 532 are respectively provided with a second elastic element 54. One end of the second elastic element 54 is connected to the second fixing block 532, and the other end of the second elastic element 54 is connected to the end of the second sliding rod 531 away from the inner wall of the tube seat 8. In this embodiment, the second elastic element 54 is a spring.

[0042] More specifically, during testing, the second probe 51 passes through the inner wall surface of the tube seat 8. Since the inner wall surface of the tube seat 8 has a curvature and the second elastic element 54 is kept in a passively stretched state, its reverse force keeps the second sliding rod 531 radially attached to the inner wall of the tube seat 8, thereby keeping the second clamping arm 52 radially attached to the inner wall of the tube seat 8, and finally keeping the second probe 51 in close contact with the inner wall surface of the tube seat 8 to obtain a stable coupling effect.

[0043] A handle 7 is provided on the side of the first fixed block 432 away from the first sliding rod 431. During testing, the handle 7 is held to move the testing device around the tube seat 8 in a circumferential direction, thus simultaneously completing the testing on the inner wall of the tube seat 8 and the inner wall of the housing 9.

[0044] The specific working method is as follows:

[0045] The scanning device provided in this embodiment is used to simultaneously perform phased array ultrasonic testing of the corner joint between the tube seat 8 and the shell 9 on the inner wall of the shell 9 and the inner wall of the tube seat 8. The scanner is attracted and fixed to the tube seat 8 by magnetic universal wheels 16 and magnetic wheel group 17. Open the first latch 6, adjust the transverse connecting rod 3 to position the first phased array probe 41 in the position required by the testing process, and close the first latch 6 to fix the position of the first probe 41. Open the second latch 551, adjust the position of the second clamping arm 52 on the longitudinal connecting rod 2 to position the second phased array probe 51 in the position required by the testing process, and close the second latch 551 to fix the position of the second probe 51. Apply a layer of machine oil as a coupling agent to the area passed by the first probe 41 and the second probe 51 on the inner wall of the tube seat 8 and the inner wall of the shell 9. Hold the handle 7 and move the testing device around the circumference of the tube seat 8 to complete the weld inspection.

[0046] The beneficial effects are:

[0047] This utility model discloses a phased array ultrasonic testing device. Utilizing this mechanical structure, it can be placed inside the corner joint between the tube seat 8 and the housing 9 for testing. The inner walls of the tube seat 8 and the housing 9 are scanned simultaneously to ensure that no defects are missed. It does not rely on manual labor, has high testing accuracy, high testing efficiency, and stable relative position and coupling state of the probe.

[0048] It should be noted that the terms "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. "A plurality of" means two or more. "Installed," "connected," and "joined" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. A phased array ultrasonic testing device, characterized in that, The system includes a main frame (1), which includes a connecting part (11). The top of the connecting part (11) is provided with a connecting block (12). The two sides of the connecting block (12) are respectively provided with first support arms (13). The end of the first support arm (13) away from the connecting block (12) is connected to a caster wheel (16). The two sides of the bottom of the connecting part (11) are respectively provided with connecting arms (14). The end of the connecting arm (14) away from the connecting part (11) is hinged to a second support arm (15). The end of the second support arm (15) away from the connecting arm (14) is connected to a wheel assembly (17). A transverse connecting rod (3) slides through the inside of the connecting block (12). The end of the transverse connecting rod (3) away from the connecting block (12) is fixedly connected to a first detection component (4). The inner side of one of the second support arms (15) is fixedly connected to a longitudinal connecting rod (2). The side of the longitudinal connecting rod (2) away from the second support arm (15) is slidably connected to a second detection component (5).

2. The phased array ultrasonic testing device according to claim 1, characterized in that, The connecting block (12) is provided with a first latch (6) to fix the position of the transverse connecting rod (3).

3. The phased array ultrasonic testing device according to claim 1, characterized in that, The first detection component (4) includes a first connector (43), one end of the transverse link (3) away from the connecting block (12) is connected to the first connector (43), one end of the first connector (43) away from the transverse link (3) is connected to the first clamping arm (42), and the other end of the first clamping arm (42) is connected to the first probe (41).

4. The phased array ultrasonic testing device according to claim 3, characterized in that, The first connector (43) includes a first sliding rod (431) and a first fixing block (432). One end of the first fixing block (432) is connected to the transverse connecting rod (3). The side of the first fixing block (432) away from the transverse connecting rod (3) is provided with a groove. The side of the first sliding rod (431) is provided with a track. The first sliding rod (431) is slidably connected to the groove of the first fixing block (432) through the track. The end of the first sliding rod (431) near the housing (9) is connected to the first clamping arm (42).

5. The phased array ultrasonic testing device according to claim 4, characterized in that, The first fixing block (432) has a first elastic element (44) on its opposite sides. One end of the first elastic element (44) is connected to the first fixing block (432), and the other end of the first elastic element (44) is connected to the end of the first sliding rod (431) away from the housing (9).

6. The phased array ultrasonic testing device according to any one of claims 1 to 5, characterized in that, The second detection component (5) includes a locking slider (55), a groove is provided on the side of the longitudinal connecting rod (2) away from the second support arm (15), a track is provided on the side of the locking slider (55), the locking slider (55) is slidably connected to the groove of the longitudinal connecting rod (2) through the track, and the locking slider (55) is provided with a second latch (551) to fix the position of the second detection component (5).

7. The phased array ultrasonic testing device according to claim 6, characterized in that, The second detection component (5) includes a second connector (53), a locking slider (55) is connected to the second connector (53) on the side away from the longitudinal link (2), the second connector (53) is connected to a second clamping arm (52) at one end away from the locking slider (55), and the other end of the second clamping arm (52) is connected to a second probe (51).

8. The phased array ultrasonic testing device according to claim 7, characterized in that, The second connector (53) includes a second sliding stop (533) and a second fixing block (532). The second fixing block (532) is connected to a locking slider (55) on one side. The second fixing block (532) has a groove on the side away from the locking slider (55). The second sliding rod (531) has a track on one side. The second sliding rod (531) is slidably connected to the groove of the second fixing block (532) through the track. The end of the second sliding rod (531) near the inner wall of the tube seat (8) is connected to a second clamping arm (52).

9. The phased array ultrasonic testing device according to claim 8, characterized in that, The top and bottom surfaces of the second fixing block (532) are respectively provided with a second elastic element (54). One end of the second elastic element (54) is connected to the second fixing block (532), and the other end of the second elastic element (54) is connected to the end of the second sliding rod (531) away from the inner wall of the tube seat (8).

10. The phased array ultrasonic testing device according to claim 4, characterized in that, A handle (7) is provided on the side of the first fixing block (432) away from the first sliding rod (431).

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