Automatic scanning device for checking fillet welds of tubes and tube plates

Abstract

The invention discloses an automatic scanning device for inspecting a fillet weld of a pipe and a pipe plate, relates to the technical field of inspection of the fillet weld of the pipe and the pipe plate, and has the advantages of improving the detection efficiency and reducing the labor intensity of personnel. According to the technical scheme, the device is characterized by comprising a scanner, a rectangular frame placed on a tube plate and sliding plates horizontally connected to the outer walls of the two opposite sides of the rectangular frame in a sliding mode, the rectangular frame is provided with an installation piece used for installing the rectangular frame on the tube plate, and the bottom ends of the two sliding plates are connected through a connecting plate; the rectangular frame is provided with a power piece used for driving the connecting plate to horizontally slide in the length direction of the rectangular frame, the connecting plate is provided with a communicating groove, the scanner corresponds to the communicating groove, the bottom end of the scanner penetrates through the communicating groove and is inserted into a pipe on the pipe plate, and the groove walls of the two opposite sides of the communicating groove make contact with the scanner. The connecting plate is provided with a pushing piece used for pushing the scanner to vertically move up and down and driving the scanner to rotate.

Description

Technical Field

[0001] This invention relates to the field of pipe and tube sheet fillet weld inspection technology, specifically an automatic scanning device for inspecting pipe and tube sheet fillet welds. Background Technology

[0002] Tube sheets are the main welded structures in heat exchangers, reactors, air coolers, etc. The fillet welds in these structures are weak points and prone to leakage, therefore requiring inspection. When inspecting the fillet welds of tube sheets, the scanning head of a scanner must be inserted into the tube to inspect the weld between the tube and the tube sheet (e.g., ...). Figure 11 Currently, inspecting each fillet weld requires manual hand-held scanning, which involves inserting the scanning head into the pipe. There are hundreds or even thousands of fillet welds, resulting in high labor intensity and low work efficiency. Therefore, the applicant has developed a new technical solution to address the aforementioned technical problems during actual production. Summary of the Invention

[0003] To address the aforementioned technical shortcomings, the purpose of this invention is to provide an automatic scanning device for inspecting fillet welds in tubes and tube sheets, which has the advantages of improving inspection efficiency and reducing the labor intensity of personnel.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This invention provides an automatic scanning device for inspecting fillet welds of pipes and tube sheets, comprising a scanner, a rectangular frame placed on the tube sheet, and sliding plates horizontally connected to the outer walls of opposite sides of the rectangular frame. The rectangular frame is provided with mounting components for mounting the rectangular frame on the tube sheet. The bottom ends of the two sliding plates are connected by a connecting plate. The rectangular frame is provided with a power component for driving the connecting plate to slide horizontally along the length of the rectangular frame. A connecting plate has a connecting groove. The scanner corresponds to the connecting groove, and the bottom end of the scanner passes through the connecting groove and is inserted into the tube on the tube sheet. The opposite sides of the connecting groove are in contact with the scanner. The connecting plate is provided with a pushing component for pushing the scanner to move vertically up and down and rotating the scanner.

[0006] By adopting the above technical solution, during use, a rectangular frame is placed on the tube sheet, and then the rectangular frame is connected to the tube sheet through the mounting bracket. Then, the power component pushes the connecting plate to drive the sliding plate to slide horizontally along the length of the rectangular frame. At this time, the scanner will follow the connecting plate through the pushing component until the bottom end of the scanner is aligned with one of the tubes on the tube sheet located below the rectangular frame. Then, the pushing component pushes the scanner to move vertically downward until the bottom end of the scanner is inserted into the tube. Then, the pushing component drives the scanner to rotate. At this time, the fillet welds in the area below the rectangular frame on the tube sheet can be inspected by the scanner. There is no need for manual hand-held scanning device inspection, which improves the inspection efficiency, reduces the labor intensity of personnel, and is simple and convenient to use.

[0007] Preferably, the power component includes a rack disposed on one side of the rectangular frame along the length of the rectangular frame, the top of the connecting plate is provided with a fixing frame, and a first motor is provided on the fixing frame, and one end of the rotating shaft of the first motor is provided with a first gear that meshes with the rack.

[0008] Preferably, the mounting component includes a first insert and a fixing plate disposed on one side of the outer wall of the rectangular frame. The connecting plate is opposite to the fixing plate. A first circular groove is formed at the center of the top of the fixing plate. The first insert corresponds to the first circular groove, and the bottom end of the first insert passes vertically through the first circular groove and is inserted into the tube on the tube plate. The fixing plate is provided with a first support frame, and a first electric cylinder is provided on the first support frame above the first insert. One end of the piston rod of the first electric cylinder is rotatably connected to the top of the first insert. A first spur gear ring is coaxially fixedly connected to the outer wall of the first insert above the fixing plate. A first servo motor is provided on the fixing plate, and a first spur gear meshing with the first spur gear ring is provided at one end of the rotating shaft of the first servo motor. A first abutting member is provided on the first insert for abutting against the inner wall of the tube.

[0009] Preferably, the first clamping member includes a vertical column and a sleeve disposed at the top of the fixed plate. The bottom end of the first insert passes through the sleeve. A plurality of through-slots are formed on the outer wall of the first insert below the fixed plate, and each through-slot group is spaced apart along the length of the first insert. Each through-slot group includes four rectangular slots formed on the first insert, and the four rectangular slots are evenly distributed along the circumference of the first insert. Elastic plates are provided on the top walls of the four rectangular slots, and anti-slip pads that abut against the inner wall of the tube are provided below the side of each elastic plate opposite to the axis of the first insert. A right-angled triangular push plate is provided on the side of each elastic plate opposite to the anti-slip pad, with the inclined surface of the push plate facing downwards. The vertical column is coaxial. A vertical column is located inside the first insert, and several discs are coaxially arranged on the vertical column. The number of discs is the same as the number of through slots. Each disc is spaced apart along the length of the vertical column, and each disc has a square frame at its top. Each square frame has a right-angled triangular extrusion plate at the end near the push plate on its outer wall. The inclined surface of the extrusion plate faces upward and cooperates with the push plate. A horizontal column is provided at the top of the vertical column. Vertical slots are vertically opened on the opposite sides of the first insert, located below the first straight tooth ring. The opposite ends of the horizontal column pass through the two vertical slots and are located outside the first insert. The two ends of the horizontal column outside the first insert are rotatably connected to rotating rings, and the outer walls of the two rotating rings are in contact with the top of the sleeve.

[0010] Preferably, the connecting plate is provided with a connector for connecting the connecting plate to the tube sheet;

[0011] The connector includes a second insert. The top of the connecting plate has a rotating groove, and a turntable is rotatably connected in the rotating groove. The top center of each turntable has a second circular groove. The connecting groove is set on the turntable. The scanner is located between the first insert and the second insert. The second insert corresponds to the second circular groove, and the bottom end of the second insert passes vertically through the second circular groove and is inserted into the tube on the tube sheet. Each connecting plate is provided with a second support frame, and a second electric cylinder is provided on the second support frame above the second insert. One end of the piston rod of the second electric cylinder is rotatably connected to the top of the second insert. A second spur gear ring is coaxially fixedly connected to the outer wall of the second insert above the connecting plate. A suspension plate is provided on one side of the second support frame, and a second servo motor is provided on the suspension plate. One end of the rotating shaft of the second servo motor is provided with a second spur gear that meshes with the second spur gear ring. The second insert is provided with a second abutting member for pressing against the inner wall of the tube.

[0012] The second clamping member has the same structure as the first clamping member. At this time, the sleeve is set on the turntable and is connected to the second circular groove. Each through groove group is set on the second insert, and the vertical groove is set on the second insert and located below the turntable.

[0013] Preferably, the pushing member includes a horizontal plate and a central groove formed at the top of the horizontal plate. The horizontal plate is rotatably connected to the piston rod of the second electric cylinder and is horizontally positioned above the second spur gear ring. A rotating ring is rotatably connected in the central groove. The scanner is disposed on the rotating ring, and the bottom end of the scanner passes through the rotating ring. A first sprocket ring is coaxially fixedly connected to the top of the second spur gear ring, and a second sprocket ring is coaxially fixedly connected to the bottom of the rotating ring ring. The first sprocket ring and the second sprocket ring are connected by a chain. A rotating shaft is rotatably connected to the second support plate, and the bottom end of the rotating shaft is coaxially fixedly connected to the top of the second spur gear. A third spur gear is coaxially provided on the rotating shaft, located above the second spur gear and cooperating with the second spur gear ring. When the bottom end of the second insert moves vertically upward into the sleeve in the second abutment member, the turntable is provided with a connector for connecting the sleeve and the second insert.

[0014] Preferably, the connector includes a mounting groove formed on one side of the sleeve in the second abutment and a plurality of slots formed on the outer wall of the second insert. Each slot is located below the second abutment and is evenly distributed along the circumference of the second insert. A slide is horizontally slidably connected in the mounting groove, and a trapezoidal insert block that mates with one of the slots is provided on the side of the slide block near the sleeve. The two inclined surfaces on the insert block are opposite each other. A first compression spring is provided on the side of the slide block away from the insert block, and the end of the first compression spring away from the insert block extends out of the mounting groove and is vertically provided with a support plate. The bottom end of the support plate is fixedly connected to the top end of the turntable.

[0015] Preferably, the horizontal plate includes a rotating plate and a movable plate. The rotating plate is rotatably connected to the piston rod of the second electric cylinder and located above the second spur gear ring. The movable plate is located on one side of the rotating plate, and two opposing sliding columns are horizontally provided at the end of the rotating plate near the movable plate. Sliding cylinders are horizontally sleeved on both sliding columns, and the outer walls of the two sliding cylinders are fixedly connected to the opposite sides of the movable plate. The central groove is opened on the movable plate. An extension plate is provided on one side of the rotating plate, and the extension plate, rotating plate, and movable plate form a T-shape. A sliding groove is squarely opened at the top of the extension plate along its length, and a slider is horizontally slidably connected in the sliding groove. A second compression spring is provided on the side of the slider near the rotating plate, and the end of the second compression spring away from the slider is fixedly connected to one side wall of the sliding groove. A third sprocket is rotatably connected to the bottom end of the slider. The chain is used to connect the first sprocket ring, the second sprocket ring, and the third sprocket. The bottom end of the scanner and the bottom end of the second insert are vertically misaligned.

[0016] Preferably, the top of the connecting plate is provided with a box for storing coupling agent, and a guide pipe is provided on the lower side of one side of the box. A water pump is provided on the guide pipe. A second dispersion ring is coaxially provided on the outer side of the sleeve in the second clamping member. The ring wall of the second dispersion ring is hollow. A plurality of second spray heads are provided on the inner wall of the second dispersion ring. Each second spray head is evenly distributed along the circumference of the second dispersion ring. The end of each second spray head near the axis of the second dispersion ring extends through the sleeve into the sleeve. An embedded ring is coaxially embedded on the outer wall of the second insert. The outer wall of the embedded ring is provided with bristles. The embedded ring is located above each through groove group. The end of the guide pipe away from the box is connected to the hollow ring wall of the second dispersion ring.

[0017] The beneficial effects of this invention are as follows: In use, a rectangular frame is placed on a tube sheet, and then the rectangular frame is connected to the tube sheet via an installation component. Then, a power component pushes a connecting plate to drive a sliding plate to slide horizontally along the length of the rectangular frame. At this time, the scanner will follow the connecting plate through a pushing component until the bottom end of the scanner is aligned with one of the tubes on the tube sheet located below the rectangular frame. Then, the pushing component pushes the scanner to move vertically downward until the bottom end of the scanner is inserted into the tube. Then, the pushing component drives the scanner to rotate. At this time, the fillet welds in the area below the rectangular frame on the tube sheet can be inspected by the scanner. There is no need for manual handheld scanning, which improves inspection efficiency, reduces labor intensity, and is simple and convenient to use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0020] Figure 2 This is a schematic diagram illustrating the structure of the skateboard in this embodiment;

[0021] Figure 3 This is a structural schematic diagram illustrating the second support frame in this embodiment;

[0022] Figure 4 This is a schematic diagram illustrating the structure of the fixing frame in this embodiment;

[0023] Figure 5 This is a schematic diagram illustrating the structure of the rectangular frame in this embodiment;

[0024] Figure 6This is a structural schematic diagram illustrating the first support frame in this embodiment;

[0025] Figure 7 This is a schematic diagram illustrating the structure of the second dispersion ring in this embodiment;

[0026] Figure 8 This is a schematic diagram illustrating the structure of the insert block in this embodiment;

[0027] Figure 9 A schematic diagram for inspecting the fillet welds on the tube sheet of an air cooler;

[0028] Figure 10 This is a schematic diagram illustrating the structure of the insert block in this embodiment;

[0029] Figure 11 This is a schematic diagram of the existing technology used to illustrate the weld.

[0030] Explanation of reference numerals in the attached figures:

[0031] In the diagram: 1. Scanner; 2. Rectangular frame; 3. Slide plate; 4. Connecting plate; 5. Connecting groove; 6. Rack; 7. Fixing frame; 8. First motor; 9. First gear; 10. First insert; 12. Fixing plate; 13. First circular groove; 14. First support frame; 15. First electric cylinder; 16. First spur gear ring; 17. First servo motor; 18. First spur gear; 19. Vertical column; 20. Sleeve; 21. Rectangular groove; 22. Elastic sheet; 23. Anti-slip pad; 24. Push plate; 25. Disc; 26. Square frame; 27. Extrusion plate; 28. Horizontal column; 29. ​​Vertical groove; 30. Rotary ring; 31. Second insert; 32. Rotary groove; 33. Turntable; 34. Second circular groove; 35. Second support frame; 36. First... 37. Second electric cylinder; 38. Second spur gear ring; 39. Suspension plate; 40. Second servo motor; 41. Second spur gear; 42. Horizontal plate; 43. Center groove; 44. Rotating ring; 45. First sprocket ring; 46. Second sprocket ring; 47. Chain; 48. Rotating shaft; 49. Third spur gear; 50. Mounting groove; 51. Slot; 52. Insert block; 53. First compression spring; 54. Vertical plate; 55. Rotating plate; 56. Moving plate; 57. Sliding column; 58. Sliding cylinder; 59. Extension plate; 60. Sliding groove; 61. Slider; 62. Second compression spring; 63. Third sprocket; 64. Box body; 66. Water pump; 69. Second dispersion ring; 70. Second spray head; 72. Embedded ring; 74. Guide pipe. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] An automatic scanning device for inspecting fillet welds in tube sheets, such as Figure 1 and Figure 2 and Figure 3 and Figure 4 The device includes a scanner 1, a rectangular frame 2 placed on a tube sheet, and sliding plates 3 horizontally connected to the outer walls of opposite sides of the rectangular frame 2. The rectangular frame 2 is provided with mounting parts for mounting the rectangular frame 2 on the tube sheet. The bottom ends of the two sliding plates 3 are connected by a connecting plate 4. The rectangular frame 2 is provided with a power component for driving the connecting plate 4 to slide horizontally along the length of the rectangular frame 2. The connecting plate 4 is provided with a connecting groove 5. The scanner 1 corresponds to the connecting groove 5 and the bottom end of the scanner 1 passes through the connecting groove 5 and is inserted into the tube on the tube sheet. The opposite sides of the connecting groove 5 are in contact with the scanner 1. The connecting plate 4 is provided with a pusher for pushing the scanner 1 to move vertically up and down and driving the scanner 1 to rotate.

[0034] like Figure 1 and Figure 2 and Figure 3 and Figure 4 In use, the rectangular frame 2 is placed on the tube sheet, and then the rectangular frame 2 is connected to the tube sheet through the mounting bracket. Then, the connecting plate 4 is pushed by the power component to drive the sliding plate 3 to slide horizontally along the length of the rectangular frame 2. At this time, the scanner 1 will follow the connecting plate 4 through the pushing component until the bottom end of the scanner 1 is aligned with one of the tubes on the tube sheet located below the rectangular frame 2. Then, the scanner 1 is pushed vertically downward by the pushing component until the bottom end of the scanner 1 is inserted into the tube. Then, the scanner 1 is rotated by the pushing component. At this time, the fillet welds in the area below the rectangular frame 2 on the tube sheet can be inspected by the scanner 1. There is no need for manual hand-held scanning device inspection, which improves the inspection efficiency, reduces the labor intensity of personnel, and is simple and convenient to use.

[0035] like Figure 10 This embodiment is a schematic diagram illustrating the structure of the insert block when inspecting the fillet welds of the tube sheet on the air cooler.

[0036] like Figure 1 This embodiment is a schematic diagram illustrating the structure of the insert block when inspecting the fillet welds of the tube sheet on the heat exchanger.

[0037] like Figure 2The power component includes a rack 6 arranged along the length of the rectangular frame 2 on one side inside the rectangular frame 2. The top of the connecting plate 4 is provided with a fixing frame 7, and the fixing frame 7 is provided with a first motor 8. One end of the rotating shaft of the first motor 8 is provided with a first gear 9 that meshes with the rack 6. The purpose of this arrangement is that when the first motor 8 is turned on, the rotating shaft of the first motor 8 drives the first gear 9 to rotate. At this time, since the first rack 6 meshes with the rack 6 and the rack 6 is arranged on the rectangular frame 2, when the rotating shaft of the first motor 8 drives the first gear 9 to rotate, through the cooperation between the first gear 9 on the first motor 8 and the rack 6 on the rectangular frame 2, the first motor 8 will push the connecting plate 4 to drive the two sliding plates 3 to slide along the length of the rectangular frame 2. It is simple and convenient to use.

[0038] like Figure 2 , Figure 5 and Figure 6 The mounting components include a first insert 10 and a fixing plate 12 disposed on one side of the outer wall of the rectangular frame 2. The connecting plate 4 is opposite to the fixing plate 12. A first circular groove 13 is provided at the center of the top of the fixing plate 12. The first insert 10 corresponds to the first circular groove 13, and the bottom end of the first insert 10 passes vertically through the first circular groove 13 and is inserted into the tube on the tube sheet. The fixing plate 12 is provided with a first support frame 14, and a first electric cylinder 15 located above the first insert 10 is provided on the first support frame 14. One end of the piston rod of the first electric cylinder 15 is rotatably connected to the top end of the first insert 10. A first spur gear ring 16 located above the fixing plate 12 is coaxially fixedly connected to the outer wall of the first insert 10. A first servo motor 17 is provided on the fixing plate 12, and a first spur gear 18 that meshes with the first spur gear ring 16 is provided at one end of the rotating shaft of the first servo motor 17. A first abutting member is provided on the first insert 10 for abutting against the inner wall of the tube.

[0039] like Figure 2 , Figure 5 and Figure 6 Place the rectangular frame 2 on the tube sheet so that the first insert 10 is aligned with the tube on the tube sheet. When it is necessary to connect the rectangular frame 2 to the tube sheet, simply push the first insert 10 downward through the piston rod of the first electric cylinder 15. At this time, the bottom end of the first insert 10 will be vertically inserted into the tube on the tube sheet. Then, the first clamping member on the first insert 10 will be pressed against the inner wall of the tube. At this time, the first spur gear 18 and the first spur gear ring 16 will mesh, and the rectangular frame 2 can be connected to the tube sheet.

[0040] Then, after the scanner 1 has finished inspecting the fillet welds in the area below the rectangular frame 2 on the tube sheet, the first servo motor 17 is turned on. At this time, the rotating shaft of the first servo motor 17 will drive the first spur gear 18 to rotate. Since the first clamping member on the first insert 10 is pressed against the inner wall of the tube, and the first spur gear 16 is set on the first insert 10, when the rotating shaft of the first servo motor 17 drives the first spur gear 18 to rotate, the first spur gear 16 and the first insert 10 will not rotate on their own. At this time, the first servo motor 17 will drive the fixing plate 12 to rotate along the axis of the first insert 10 through the cooperation of the first spur gear 18 and the first spur gear 16. At this time, the rectangular frame 2 will follow the fixing plate 12 to rotate along the axis of the first insert 10. At this time, the position of the rectangular frame 2 on the tube sheet can be adjusted, which facilitates the scanner 1 to inspect the fillet welds on the tube sheet. It is simple and convenient to use.

[0041] like Figure 2 , Figure 5 and Figure 6 The first clamping member includes a vertical column 19 and a sleeve 20 disposed at the top of the fixing plate 12. The bottom end of the first insert 10 passes through the sleeve 20. Several through slots are provided on the outer wall of the first insert 10 below the fixing plate 12, and each through slot group is spaced apart along the length of the first insert 10. Each through slot group includes four rectangular slots 21 on the first insert 10, and the four rectangular slots 21 are evenly distributed along the circumference of the first insert 10. Elastic plates 22 are provided on the top wall of each of the four rectangular slots 21, and anti-slip pads 23 that abut against the inner wall of the tube are provided on the side of each of the four elastic plates 22 away from the axis of the first insert 10. Right-angled triangular push plates 24 are provided on the side of each of the four elastic plates 22 away from the anti-slip pads 23, and the inclined surface of the push plates 24 faces downward. The vertical column 19 is coaxially and vertically located at the first Inside the insert 10, and on the vertical column 19, there are several discs 25 coaxially arranged. The number of discs 25 is the same as the number of through slots. Each disc 25 is distributed at intervals along the length of the vertical column 19. Each disc 25 has a square frame 26 at its top. Each square frame 26 has a right-angled triangular extrusion plate 27 at one end of its outer wall near the push plate 24. The inclined surface of the extrusion plate 27 faces upward and cooperates with the push plate 24. A horizontal column 28 is horizontally arranged at the top of the vertical column 19. Vertical slots 29 located below the first straight tooth ring 16 are vertically opened on both sides of the first insert 10. The two ends of the horizontal column 28 pass through the two vertical slots 29 and are located outside the first insert 10. The two ends of the horizontal column 28 located outside the first insert 10 are rotatably connected to rotating rings 30. The outer walls of the two rotating rings 30 are in contact with the top of the sleeve 20.

[0042] like Figure 2 , Figure 5 and Figure 6When the first insert 10 moves vertically, the horizontal column 28, the vertical column 19, and each of the elastic plates 22, anti-slip pads 23, push plates 24, discs 25, square frames 26, and extrusion plates 27 will all move vertically along with the first insert 10. When the piston rod of the first electric cylinder 15 pushes the first insert 10 downward so that the bottom end of the first insert 10 is vertically inserted into the tube on the tube sheet, the piston rod of the first electric cylinder 15 continues to push the first insert 10 downward. When the rotating ring 30 on the horizontal column 28 contacts the top of the sleeve 20, the horizontal column 28, the vertical column 19, the disc 25, the square frame 26, and the extrusion plate 27 will... The movement will stop. At this time, each elastic piece 22, anti-slip pad 23, and push plate 24 will follow the first insert 10 vertically downward. At this time, the extrusion plate 27 and the push plate 24 will approach each other. When the inclined surface on the extrusion plate 27 contacts the inclined surface on the push plate 24, as the first insert 10 moves vertically downward, the extrusion plate 27 and the push plate 24 will cooperate to push the elastic piece 22 to bend outward to the first insert 10 until the anti-slip pad 23 on the elastic piece 22 is pressed against the inner wall of the tube. At this time, the rectangular frame 2 can be installed and connected to the tube plate, and the first insert 10 can be restricted to prevent it from rotating. It is simple and convenient to use.

[0043] like Figure 2 , Figure 3 and Figure 4 The connecting plate 4 is provided with a connector for connecting the connecting plate 4 to the tube sheet;

[0044] The connector includes a second insert 31. A rotating groove 32 is formed at the top of the connecting plate 4, and a turntable 33 is rotatably connected within the rotating groove 32. A second circular groove 34 is formed at the center of the top of each turntable 33. A connecting groove 5 is provided on the turntable 33. The scanner 1 is located between the first insert 10 and the second insert 31. The second insert 31 corresponds to the second circular groove 34, and the bottom end of the second insert 31 vertically passes through the second circular groove 34 and inserts into the tube on the tube sheet. Each connecting plate 4 is provided with a second support frame 35, and the second support frame 35 is equipped with... The second electric cylinder 36 is located above the second insert 31. One end of the piston rod of the second electric cylinder 36 is rotatably connected to the top end of the second insert 31. A second spur gear ring 37 located above the connecting plate 4 is coaxially fixedly connected to the outer wall of the second insert 31. A suspension plate 38 is provided on one side of the second support frame 35, and a second servo motor 39 is provided on the suspension plate 38. A second spur gear 40 that meshes with the second spur gear ring 37 is provided at one end of the rotating shaft of the second servo motor 39. A second abutting member is provided on the second insert 31 for abutting against the inner wall of the tube.

[0045] The second clamping member has the same structure as the first clamping member. At this time, the sleeve 20 is set on the turntable 33 and is connected to the second circular groove 34. Each through groove group is set on the second insert 31. The vertical groove 29 is set on the second insert 31 and located below the turntable 33.

[0046] like Figure 2 , Figure 3 and Figure 4 When the connecting plate 4 moves horizontally, the connecting piece will move with the connecting plate 4. When the rectangular frame 2 rotates one revolution along the axis of the first insert 10 with the fixed plate 12, and during the rotation of the rectangular frame 2, after the scanner 1 has completed the inspection of the fillet weld in the area below the rectangular frame 2, the connecting plate 4 is slid horizontally by the power component until the second insert 31 is aligned with one of the tubes on the tube sheet. Then, the piston rod of the second electric cylinder 36 pushes the second insert 31 to move vertically downward, so that the bottom end of the second insert 31 is inserted into the tube on the tube sheet. Then, the second clamping piece on the second insert 31 is pressed against the inner wall of the tube. At this time, the second spur gear 40 and the second spur gear ring 37 mesh. Then, the piston rod of the first electric cylinder 15 drives the first insert 10 to move upward, releasing the anti-slip pad 23 on the elastic sheet 22 from the inner wall of the tube. At this time, the first spur gear 18 and the first spur gear ring 16... The engagement state is disengaged, and then the piston rod of the first electric cylinder 15 continues to drive the first insert 10 to move upward until the bottom end of the first insert 10 is removed from the tube on the tube sheet. Then the second servo motor 39 is turned on. At this time, the rotating shaft of the second servo motor 39 drives the second spur gear 40 to rotate. At this time, because the second clamping member on the second insert 31 is pressed against the inner wall of the tube, and the second spur gear ring 37 is set on the second insert 31, when the rotating shaft of the second servo motor 39 drives the second spur gear 40 to rotate, the second spur gear ring 37 and the second insert 31 will not rotate on their own. At this time, the second servo motor 39 will drive the connecting plate 4 to rotate along the axis of the second insert 31 through the cooperation of the second spur gear 40 and the second spur gear ring 37. At this time, the rectangular frame 2 will follow the connecting plate 4 to rotate along the axis of the second insert 31 through the sliding plate 3. At this time, the position of the rectangular frame 2 on the tube sheet can be further adjusted.

[0047] When the rectangular frame 2 rotates along the axis of the second insert 31 to complete the position adjustment, and the first insert 10 is aligned with the tube on the tube plate, the piston rod of the first electric cylinder 15 drives the first insert 10 to move downward. When the bottom end of the first insert 10 enters the tube, the piston rod of the first electric cylinder 15 pushes the first insert 10 to continue moving downward until the horizontal column 28, the rotating ring 30, the sleeve 20, the vertical column 19, and each of the discs 25, the square frame 26, the pressing plate 27, the elastic plate 22, and the push plate 24 cooperate, so that the anti-slip pad 23 on the elastic plate 22 is pressed against the inner wall of the tube. At this time, the first spur gear 18 and the first spur gear ring 16 will mesh. Then, the piston rod of the second electric cylinder 36 pushes the second insert 31 to move vertically upward, releasing the anti-slip pad 23 on the elastic plate 22 in the second pressing member from the inner wall of the tube. Then, the piston rod of the second electric cylinder 36 continues to drive the second insert 31 to move upward until the bottom end of the second insert 31 moves out of the tube on the tube sheet. Then, the connecting plate 4 is slid horizontally by the power component until the bottom end of the scanner 1 is aligned with one of the tubes on the tube sheet located below the rectangular frame 2. Then, the scanner 1 is pushed vertically downward by the pusher until the bottom end of the scanner 1 is inserted into the tube. Then, the scanner 1 is rotated by the pusher to inspect the corner weld. Through the above process, after the rectangular frame 2 rotates one revolution along the axis of the first insert 10, the rectangular frame 2 rotates along the axis of the second insert 31, so that the rectangular frame 2 can move on the tube sheet, which facilitates the inspection of the corner weld on the tube sheet by the scanner 1. The angle of rotation of the rectangular frame 2 along the axis of the second insert 31 is 90 degrees, which is simple and convenient to use.

[0048] like Figure 3 and Figure 4 The pushing component includes a horizontal plate 41 and a central groove 42 formed at the top of the horizontal plate 41. The horizontal plate 41 is rotatably connected to the piston rod of the second electric cylinder 36, and the horizontal plate 41 is horizontally positioned above the second spur gear ring 37. A rotating ring 43 is rotatably connected in the central groove 42. A scanner 1 is mounted on the rotating ring 43, and the bottom end of the scanner 1 passes through the rotating ring 43. A first sprocket ring 44 is coaxially fixedly connected to the top of the second spur gear ring 37, and a second sprocket ring 44 is coaxially fixedly connected to the bottom of the rotating ring 43. 5. The first sprocket ring 44 and the second sprocket ring 45 are connected by a chain 46. A rotating shaft 47 is rotatably connected to the second support plate, and the bottom end of the rotating shaft 47 is coaxially fixedly connected to the top end of the second spur gear 40. A third spur gear 48 is coaxially provided on the rotating shaft 47, located above the second spur gear 40 and cooperating with the second spur gear ring 37. When the bottom end of the second insert 31 moves vertically upward into the sleeve 20 in the second abutment, the turntable 33 is provided with a connector for connecting the sleeve 20 and the second insert 31.

[0049] like Figure 2 , Figure 3 and Figure 4 When the bottom end of the scanner 1 is aligned with one of the tubes on the tube sheet, the next tube next to it will be aligned with the second insert 31. When the piston rod of the second electric cylinder 36 pushes the second insert 31 to move vertically, the piston rod of the second electric cylinder 36 will simultaneously drive the horizontal plate 41 to move. At this time, the rotating ring 43, the scanner 1, the first sprocket ring 44, the second sprocket ring 45, and the chain 46 will follow the horizontal plate 41 to move.

[0050] When the second insert 31 and the bottom end of the scanner 1 enter the tube, and the second spur gear 37 meshes with the second spur gear 40, and the second clamping member on the second insert 31 is not pressed against the inner wall of the tube, the second servo motor 39 is turned on. At this time, through the cooperation of the second spur gear 37 and the second spur gear 40, the second insert 31 can be driven to rotate. At the same time, the first sprocket ring 44 will follow the second spur gear 37 to rotate. At this time, the first sprocket ring 44 will drive the second sprocket ring 45 to rotate through the chain 46. At this time, the second sprocket ring 45 will drive the rotating ring 43 to rotate in the central groove 42. At this time, the scanner 1 will follow the rotating ring 43 to rotate. The scanner 1 rotates by 360 degrees clockwise and then 360 degrees counterclockwise.

[0051] When the bottom end of the second insert 31 and the bottom end of the scanner 1 enter the tube, and the second clamping member abuts against the inner wall of the tube, and the bottom end of the first insert 10 is located outside the tube, the connecting plate 4 is driven to rotate 90 degrees along the axis of the second insert 31 through the cooperation of the second servo motor 39, the second spur gear 40 and the second spur gear ring 37. Since the turntable 33 is rotatably connected in the rotating groove 32, the scanner 1 will not affect the connecting plate 4 from driving the rectangular frame 2 to rotate through the slide plate 3.

[0052] When the connecting plate 4 completes a 90-degree rotation along the axis of the second insert 31, and the bottom end of the first insert 10 enters the tube, the first clamping member on the first insert 10 abuts against the inner wall of the tube. After the bottom ends of the second insert 31 and the scanner 1 are removed from the tube, the scanner 1 will be located on one side of the first insert 10 and the second insert 31. The second spur gear 37 will mesh with the third spur gear 48. At this time, the connector will connect the sleeve 20 in the second clamping member to the second insert 31. Then, the rotating shaft of the second servo motor 39 drives the second spur gear 40, and the second spur gear 40 drives the third spur gear 48 to rotate through the rotating shaft 47. At this time, because the connector connects the sleeve 20 in the second clamping member to the second insert 31... The connection is such that when the third spur gear 48 rotates, it will drive the second insert 31 to rotate through the second spur gear ring 37 meshing with it. At this time, the second insert 31 will drive the sleeve 20 in the second abutment to rotate through the insert member. The sleeve 20 will drive the turntable 33 to rotate in the rotating groove 32. Since the opposite sides of the groove wall of the connecting groove 5 are in contact with the scanner 1, when the turntable 33 rotates, it can drive the scanner 1 to rotate along the rotation axis of the second insert 31. At this time, the horizontal plate 41 will follow the scanner 1 to rotate along the rotation axis of the second insert 31 until the scanner 1 is rotated back between the first insert 10 and the second insert 31. It is simple and convenient to use.

[0053] like Figure 3 , Figure 7 and Figure 8 The connector includes a mounting groove 49 on one side of the sleeve 20 in the second abutment and several slots 50 on the outer wall of the second insert 31. Each slot 50 is located below the second abutment and is evenly distributed around the circumference of the second insert 31. A slide table 51 is horizontally slidably connected in the mounting groove 49. A trapezoidal insert block 52 that mates with one of the slots 50 is provided on the side of the slide table 51 near the sleeve 20. The two inclined surfaces on the insert block 52 are opposite each other. A first compression spring 53 is provided on the side of the slide table 51 away from the insert block 52. The end of the first compression spring 53 away from the insert block 52 extends out of the mounting groove 49 and is vertically provided with a stand plate 54. The bottom end of the stand plate 54 is fixedly connected to the top end of the turntable 33.

[0054] like Figure 3 , Figure 7 and Figure 8When the bottom end of the second insert 31 enters the sleeve 20 and one of the slots 50 corresponds to the mounting slot 49, the first compression spring 53 will push the slide 51 away from the upright plate 54 until the insert block 52 on the slide 51 is horizontally inserted into the slot 50 corresponding to the mounting slot 49. At this time, the sleeve 20 in the second abutment and the second insert 31 can be connected together by the cooperation of the insert block 52 and the slot 50. Since the two inclined surfaces on the insert block 52 are opposite each other, the insert block 52 and the slot 50 will not affect the verticality of the second insert 31. The movable insert 52 has a ball bearing (not shown in the figure) on the side away from the slide table 51 that abuts against the outer wall of the second insert 31. The ball bearing reduces the frictional resistance between the side of the insert 52 away from the slide table 51 and the second insert 31 when the second insert 31 moves vertically, making it easier for the second insert 31 to move vertically. When the insert 52 is horizontally inserted into one of the slots 50, the first compression spring 53 is in a natural state. When the insert 52 is outside the slot 50, the first compression spring 53 is in a compressed state, making it simple and convenient to use.

[0055] like Figure 2 , Figure 3 , Figure 4 and Figure 9 The horizontal plate 41 includes a rotating plate 55 and a movable plate 56. The rotating plate 55 is rotatably connected to the piston rod of the second electric cylinder 36 and is located above the second spur gear ring 37. The movable plate 56 is located on one side of the rotating plate 55, and two opposing sliding pillars 57 are horizontally provided at one end of the rotating plate 55 near the movable plate 56. Sliding cylinders 58 are horizontally sleeved on both sliding pillars 57, and the outer walls of the two sliding cylinders 58 are fixedly connected to the opposite sides of the movable plate 56. A central groove 42 is formed on the movable plate 56. An extension plate 59 is provided on one side of the rotating plate 55, and the extension plate 59 is connected to the rotating plate 55. Forming a T-shape with the movable plate 56, the top of the extension plate 59 has a rectangular groove 60 along its length, and a slider 61 is horizontally connected within the groove 60. A second compression spring 62 is provided on the side of the slider 61 near the rotating plate 55, and the end of the second compression spring 62 away from the slider 61 is fixedly connected to one side wall of the groove 60. A third sprocket 63 is rotatably connected to the bottom of the slider 61. A chain 46 is used to connect the first sprocket ring 44, the second sprocket ring 45, and the third sprocket 63. The bottom of the scanner 1 is vertically offset from the bottom of the second insert 31.

[0056] like Figure 2 , Figure 3 , Figure 4 and Figure 9The distance between the scanner 1 and the second insert 31 is F, and the distance between the first and second adjacent tubes on the tube sheet is D. When F and D are not equal, the connecting plate is first moved by the power component until the bottom end of the scanner 1 is aligned with the first tube. Then, the scanner 1 and the second insert 31 are moved downward by the second electric cylinder 36 until the bottom end of the scanner 1 is inserted into the first tube. At this time, the bottom end of the second insert 31 is still outside the tube. Then, the power component moves the connecting plate 4 so that the bottom end of the second insert 31 is aligned with the second tube. At this time, the distance between the scanner 1 and the second insert 31 will increase. At this time, the distance between the first sprocket ring 44 and the second sprocket ring 44 will increase. The spacing between 45 will increase, and at this time, the chain 46 will drive the slider 61 to approach the rotating plate 55 in the slide groove 60 through the third sprocket 63. At this time, the second compression spring 62 will be compressed, and then the second electric cylinder 36 will continue to move the scanner 1 and the second insert 31 downward, so that the bottom end of the second insert 31 can be inserted into the second tube that is aligned with it. This reduces the situation where the scanner 1 and the second insert 31 cannot be inserted into the tube on the tube plate due to the unequal spacing between two adjacent tubes on the tube plate. When the first sprocket ring 44 and the second sprocket ring 45 rotate through the chain 46, the chain 46 will drive the third sprocket 63 to rotate, which is simple and convenient to use.

[0057] like Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 The top of the connecting plate 4 is provided with a box 64 for storing coupling agent, and a guide pipe 74 is provided on the lower side of one side of the box 64. A water pump 66 is provided on the guide pipe 74. A second dispersion ring 69 is coaxially provided on the outer side of the sleeve 20 in the second abutment. The ring wall of the second dispersion ring 69 is hollow. A number of second spray heads 70 are provided on the inner wall of the second dispersion ring 69. Each second spray head 70 is evenly distributed along the circumference of the second dispersion ring 69. The end of each second spray head 70 near the axis of the second dispersion ring 69 extends through the sleeve 20 and into the sleeve 20. An embedded ring 72 is coaxially embedded on the outer wall of the second insert 31. The outer wall of the embedded ring 72 is provided with bristles. The embedded ring 72 is located above each through groove group. The end of the guide pipe 74 away from the box 64 is connected to the hollow ring wall of the second dispersion ring 69.

[0058] like Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8When the second electric cylinder 36 causes the scanner 1 and the second insert 31 to continue moving downwards until the embedding ring 72 on the second insert 31 enters the sleeve 20, the water pump 66 is turned on to draw the coupling agent (gel) stored in the box 64 into the second dispersion ring 69 through the guide tube 74. At this time, the gel in the second dispersion ring 69 will be sprayed onto the bristles on the embedding ring 72 (not shown in the figure) through each second water spray head 70. Then, the second electric cylinder 36 causes the scanner 1 and the second insert 31 to continue moving downwards until the embedding ring 72 on the second insert 31 and each through groove group enter the tube. Then, when the second insert 31 and the scanner 1 rotate, the gel can be pre-carried into the next tube that the scanner 1 is to enter through the bristles and brushed onto the inner wall of the tube. It is simple and convenient to use, and there is no need to manually spray the gel into the tube.

[0059] The procedure for using this device is as follows:

[0060] The first step is to place the rectangular frame 2 on the tube plate so that the first insert 10 is aligned with the tube on the tube plate.

[0061] In the second step, the piston rod of the first electric cylinder 15 pushes the first insert 10 downwards, causing the bottom end of the first insert 10 to be vertically inserted into the tube on the tube sheet. The piston rod of the first electric cylinder 15 then pushes the first insert 10 further downwards. When the rotating ring 30 on the horizontal column 28 contacts the top of the sleeve 20, the first spur gear 18 and the first spur gear ring 16 will mesh. At this point, the horizontal column 28, the vertical column 19, the disc 25, the square frame 26, and the extrusion plate 27 will stop moving. Then, with the... As the first insert 10 moves downward, the extrusion plate 27 and the push plate 24 will approach each other. When the inclined surface on the extrusion plate 27 contacts the inclined surface on the push plate 24, as the first insert 10 moves vertically downward, the elastic plate 22 is pushed to bend outward towards the outside of the first insert 10 through the cooperation of the extrusion plate 27 and the push plate 24, until the anti-slip pad 23 on the elastic plate 22 is pressed against the inner wall of the tube. At this time, the rectangular frame 2 can be installed and connected to the tube plate, and the first insert 10 can be restricted to prevent it from rotating.

[0062] The third step is to turn on the first motor 8. The rotating shaft of the first motor 8 drives the first gear 9 to rotate. At this time, because the first rack 6 meshes with the rack 6 and the rack 6 is set on the rectangular frame 2, when the rotating shaft of the first motor 8 drives the first gear 9 to rotate, through the cooperation between the first gear 9 on the first motor 8 and the rack 6 on the rectangular frame 2, the first motor 8 will push the connecting plate 4 to drive the two slide plates 3 to slide along the length of the rectangular frame 2. At this time, the scanner 1 and the second insert 31 will move with the connecting plate 4 until the bottom of the scanner 1 and the second insert 31 are aligned with the tube on the tube plate.

[0063] Fourthly, the second electric cylinder 36 moves the scanner 1 and the second insert 31 downwards until the embedded ring 72 on the second insert 31 enters the sleeve 20. Then, the water pump 66 is turned on to draw the coupling agent (gel) stored in the box 64 into the second dispersion ring 69 through the guide tube 74. At this time, the gel in the second dispersion ring 69 will be sprayed onto the bristles on the embedded ring 72 (not shown in the figure) through each of the second spray nozzles 70. Then, the second electric cylinder 36 moves the scanner 1 and the second insert 31 downwards until the embedded ring 72 on the second insert 31 and each through-slot group are all inside the tube. Then, the second servo motor 39 is turned on. The engagement of the second spur gear 37 and the second spur gear 40 causes the second insert 31 and the first sprocket ring 44 to rotate. At this time, the first sprocket ring 44 drives the second sprocket ring 45 to rotate via the chain 46. The second sprocket ring 45 then drives the rotating ring 43 to rotate within the central groove 42. The scanner 1 then rotates along with the rotating ring 43. The scanner 1 can then inspect the fillet welds in the area below the rectangular frame 2 on the tube sheet. When the second insert 31 rotates, the brush bristles can carry the gel into the next tube that the scanner 1 will enter, and brush it onto the inner wall of the tube. It is simple and convenient to use, and there is no need for manual spraying of the gel into the tube.

[0064] Fifth step: After the scanner 1 has finished inspecting the fillet welds in the area below the rectangular frame 2 on the tube sheet, the bottom ends of the scanner 1 and the second insert 31 are moved out of the tube by the second electric cylinder 36. Then, the first servo motor 17 is turned on. The rotating shaft of the first servo motor 17 drives the first spur gear 18 to rotate. Since the first insert 10 in the second step cannot rotate on its own, when the rotating shaft of the first servo motor 17 drives the first spur gear 18 to rotate, the first servo motor 17 will drive the fixing plate 12 to rotate along the axis of the first insert 10. At this time, the rectangular frame 2 will follow the fixing plate 12 to rotate along the axis of the first insert 10. At this time, the position of the rectangular frame 2 on the tube sheet can be adjusted, which facilitates the scanner 1 to inspect the fillet welds on the tube sheet.

[0065] Step 6: When the rectangular frame 2 rotates one revolution along the axis of the first insert 10 with the fixed plate 12, and during the rotation of the rectangular frame 2, the scanner 1 completes the inspection of the fillet weld in the area below the rectangular frame 2. Through the process of step 3, the second insert 31 and the bottom end of the scanner 1 are aligned with the tube on the tube sheet and inserted. Then, the second clamping member on the second insert 31 is pressed against the inner wall of the tube. At this time, the second spur gear 40 and the second spur gear ring 37 will mesh. Then, the piston rod of the first electric cylinder 15 drives the first insert 10 to move upward, releasing the anti-slip pad 23 on the elastic sheet 22 from the inner wall of the tube. Then, the piston rod of the first electric cylinder 15 continues to drive the first insert 10 to move upward. At this time, the meshing state of the first spur gear 18 and the first spur gear ring 16 will be disengaged until the bottom end of the first insert 10 is removed from the tube on the tube sheet.

[0066] Step 7: Turn on the second servo motor 39. The rotating shaft of the second servo motor 39 drives the second spur gear 40 to rotate. At this time, because the second clamping member on the second insert 31 in step 6 is pressed against the inner wall of the tube, and the second spur gear ring 37 is set on the second insert 31, when the rotating shaft of the second servo motor 39 drives the second spur gear 40 to rotate, the second spur gear ring 37 and the second insert 31 will not rotate on their own. At this time, the second servo motor 39 will drive the connecting plate 4 to rotate along the axis of the second insert 31 through the cooperation of the second spur gear 40 and the second spur gear ring 37. At this time, the rectangular frame 2 will follow the connecting plate 4 to rotate along the axis of the second insert 31 through the sliding plate 3. At this time, the position of the rectangular frame 2 on the tube plate can be further adjusted. The angle of rotation of the rectangular frame 2 along the axis of the second insert 31 is 90 degrees.

[0067] Step 8: When the rectangular frame 2 rotates 90 degrees along the axis of the second insert 31 to complete the position adjustment, and the first insert 10 is aligned with the tube on the tube sheet, the scanner 1 will be located on one side of the first insert 10 and the second insert 31. Then, repeat step 2. Then, the piston rod of the second electric cylinder 36 pushes the second insert 31 and the scanner 1 to move vertically upward, releasing the anti-slip pad 23 on the elastic plate 22 of the second clamping member from the inner wall of the tube. Then, the piston rod of the second electric cylinder 36 continues to drive the second insert 31 and the scanner 1 to move upward until the second insert 31 is aligned with the tube. The bottom ends of the cylinder 31 and the scanner 1 are moved out of the tube on the tube sheet and enter the connecting groove 5 and the sleeve 20 respectively. At this time, the second spur gear 37 will mesh with the third spur gear 48, and one of the slots 50 on the second insert cylinder 31 will correspond to the mounting groove 49. At this time, the first compression spring 53 will push the slide 51 away from the vertical plate 54 until the insert block 52 on the slide 51 is horizontally inserted into the slot 50 corresponding to the mounting groove 49. At this time, the sleeve 20 in the second abutment and the second insert cylinder 31 can be connected together by the cooperation of the insert block 52 and the slot 50.

[0068] In the ninth step, the rotating shaft of the second servo motor 39 drives the second spur gear 40, which in turn drives the third spur gear 48 via the rotating shaft 47. The third spur gear 48, through its meshing with the second spur gear ring 37, drives the second insert 31 to rotate. At this time, the second insert 31, through the engagement of the insert block 52 and the slot 50, drives the sleeve 20 in the second abutment to rotate. The sleeve 20 then drives the turntable 33 to rotate within the rotating groove 32. At this time, due to the interaction between the opposite sides of the groove wall of the connecting groove 5 and the scanning... Since the scanner 1 is in contact with the tube sheet, when the turntable 33 rotates, it can drive the scanner 1 to rotate along the rotation axis of the second insert 31. At this time, the horizontal plate 41 will follow the scanner 1 to rotate along the rotation axis of the second insert 31 until the scanner 1 is rotated back between the first insert 10 and the second insert 31. Then, the process of the third, fourth, fifth, sixth, seventh, eighth and ninth steps is repeated in sequence, so that the rectangular frame 2 can move on the tube sheet, which facilitates the scanner 1 to inspect the fillet welds on the tube sheet.

[0069] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An automatic scanning device for inspecting fillet welds in pipes and tube sheets, characterized in that, The device includes a scanner (1), a rectangular frame (2) placed on a tube sheet, and sliding plates (3) that are horizontally connected to the outer walls of opposite sides of the rectangular frame (2). The rectangular frame (2) is provided with mounting parts for mounting the rectangular frame (2) on the tube sheet. The bottom ends of the two sliding plates (3) are connected by a connecting plate (4). The rectangular frame (2) is provided with a power component for driving the connecting plate (4) to slide horizontally along the length of the rectangular frame (2). The connecting plate (4) is provided with a connecting groove (5). The scanner (1) corresponds to the connecting groove (5), and the bottom end of the scanner (1) passes through the connecting groove (5) and is inserted into the tube on the tube sheet. The opposite sides of the connecting groove (5) are in contact with the scanner (1). The connecting plate (4) is provided with a pusher for pushing the scanner (1) to move vertically up and down and for driving the scanner (1) to rotate.

2. The automatic scanning device for inspecting fillet welds of pipes and tube sheets as described in claim 1, characterized in that, The power component includes a rack (6) arranged on one side of the rectangular frame (2) along the length direction of the rectangular frame (2), a fixing frame (7) is provided at the top of the connecting plate (4), and a first motor (8) is provided on the fixing frame (7). One end of the rotating shaft of the first motor (8) is provided with a first gear (9) that meshes with the rack (6).

3. The automatic scanning device for inspecting fillet welds of pipes and tube sheets as described in claim 1, characterized in that, The mounting component includes a first insert (10) and a fixing plate (12) disposed on one side of the outer wall of the rectangular frame (2). The connecting plate (4) is opposite to the fixing plate (12). A first circular groove (13) is provided at the center of the top of the fixing plate (12). The first insert (10) corresponds to the first circular groove (13), and the bottom end of the first insert (10) passes vertically through the first circular groove (13) and is inserted into the tube on the tube sheet. The fixing plate (12) is provided with a first support frame (14), and the first support frame (14) is provided with a support located on the first insert (10). 0) The first electric cylinder (15) above, one end of the piston rod of the first electric cylinder (15) is rotatably connected to the top end of the first insert (10), and a first spur gear (16) located above the fixing plate (12) is coaxially fixedly connected to the outer wall of the first insert (10). The fixing plate (12) is provided with a first servo motor (17), and one end of the rotating shaft of the first servo motor (17) is provided with a first spur gear (18) that meshes with the first spur gear (16). The first insert (10) is provided with a first abutting member for abutting against the inner wall of the tube.

4. The automatic scanning device for inspecting fillet welds of pipes and tube sheets as described in claim 3, characterized in that, The first clamping member includes a vertical column (19) and a sleeve (20) disposed at the top of the fixing plate (12). The bottom end of the first insert (10) passes through the sleeve (20). A plurality of through slots are provided on the outer wall of the first insert (10) below the fixing plate (12), and each through slot group is distributed at intervals along the length direction of the first insert (10). Each through slot group includes four rectangular slots (21) opened on the first insert (10), and the four rectangular slots (21) are... The four rectangular slots (21) are evenly distributed around the first insert (10). Each of the four rectangular slots (21) has an elastic plate (22) on its top wall. Each of the four elastic plates (22) has an anti-slip pad (23) on the side opposite to the axis of the first insert (10) that contacts the inner wall of the tube. Each of the four elastic plates (22) has a right-angled triangular push plate (24) on the side opposite to the anti-slip pad (23), with the inclined surface of the push plate (24) facing downwards. The vertical column (19) is coaxially and vertically located within the first insert (10). Within 0), and on the vertical column (19), several discs (25) are coaxially arranged. The number of discs (25) is the same as that of the through slot group. Each disc (25) is distributed at intervals along the length direction of the vertical column (19), and each disc (25) has a square frame (26) at its top. Each square frame (26) has a right-angled triangular extrusion plate (27) at the end of its outer wall near the push plate (24). The inclined surface of the extrusion plate (27) faces upward and cooperates with the push plate (24). The vertical column (19) has a horizontal column (28) at the top. The first insert (10) has vertical slots (29) on both sides below the first straight tooth ring (16). The two ends of the horizontal column (28) pass through the two vertical slots (29) and are located outside the first insert (10). The two ends of the horizontal column (28) outside the first insert (10) are rotatably connected to rotating rings (30), and the outer walls of the two rotating rings (30) are in contact with the top of the sleeve (20).

5. The automatic scanning device for inspecting fillet welds of pipes and tube sheets as described in claim 4, characterized in that, The connecting plate (4) is provided with a connector for connecting the connecting plate (4) to the tube sheet; The connector includes a second insert (31), and the top of the connecting plate (4) is provided with a rotating groove (32), and a turntable (33) is rotatably connected in the rotating groove (32). The top center of each turntable (33) is provided with a second circular groove (34). The connecting groove (5) is provided on the turntable (33). The scanner (1) is located between the first insert (10) and the second insert (31). The second insert (31) corresponds to the second circular groove (34), and the bottom end of the second insert (31) passes vertically through the second circular groove (34) and is inserted into the tube on the tube sheet. Each connecting plate (4) is provided with a second support frame (35), and the second support frame ( 35) is provided with a second electric cylinder (36) located above the second insert (31). One end of the piston rod of the second electric cylinder (36) is rotatably connected to the top end of the second insert (31). A second spur gear ring (37) located above the connecting plate (4) is coaxially fixedly connected to the outer wall of the second insert (31). A suspension plate (38) is provided on one side of the second support frame (35), and a second servo motor (39) is provided on the suspension plate (38). A second spur gear (40) is provided at one end of the rotating shaft of the second servo motor (39) and meshes with the second spur gear ring (37). A second abutting member is provided on the second insert (31) for abutting against the inner wall of the tube. The second abutment has the same structure as the first abutment. At this time, the sleeve (20) is set on the turntable (33) and is connected to the second circular groove (34). Each through groove group is set on the second insert (31), and the vertical groove (29) is set on the second insert (31) and located below the turntable (33).

6. The automatic scanning device for inspecting fillet welds of pipes and tube sheets as described in claim 5, characterized in that, The pushing component includes a horizontal plate (41) and a central groove (42) formed at the top of the horizontal plate (41). The horizontal plate (41) is rotatably connected to the piston rod of the second electric cylinder (36), and the horizontal plate (41) is horizontally positioned above the second spur gear ring (37). A rotating ring (43) is rotatably connected in the central groove (42). The scanner (1) is mounted on the rotating ring (43), and the bottom end of the scanner (1) passes through the rotating ring (43). The top end of the second spur gear ring (37) is coaxially fixedly connected to a first sprocket ring (44), and the bottom end of the rotating ring (43) is coaxially fixedly connected to a second sprocket. The first sprocket ring (44) and the second sprocket ring (45) are connected by a chain (46). A rotating shaft (47) is rotatably connected to the second support plate, and the bottom end of the rotating shaft (47) is coaxially fixedly connected to the top end of the second spur gear (40). A third spur gear (48) is coaxially provided on the rotating shaft (47) above the second spur gear (40) and cooperating with the second spur gear ring (37). When the bottom end of the second insert (31) moves vertically upward into the sleeve (20) in the second abutment, the turntable (33) is provided with a connector for connecting the sleeve (20) and the second insert (31).

7. The automatic scanning device for inspecting fillet welds of pipes and tube sheets as described in claim 6, characterized in that, The connector includes a mounting groove (49) on one side of the sleeve (20) in the second abutment and several slots (50) on the outer wall of the second insert (31). Each slot (50) is located below the second abutment and is evenly distributed around the second insert (31). A slide (51) is horizontally slidably connected in the mounting groove (49). A trapezoidal insert (52) that mates with one of the slots (50) is provided on the side of the slide (51) near the sleeve (20). The two inclined surfaces on the insert (52) are opposite each other. A first compression spring (53) is provided on the side of the slide (51) away from the insert (52). The end of the first compression spring (53) away from the insert (52) extends to the outside of the mounting groove (49) and is vertically provided with a stand plate (54). The bottom end of the stand plate (54) is fixedly connected to the top end of the turntable (33).

8. An automatic scanning device for inspecting fillet welds of pipes and tube sheets as described in claim 6, characterized in that, The horizontal plate (41) includes a rotating plate (55) and a movable plate (56). The rotating plate (55) is rotatably connected to the piston rod of the second electric cylinder (36) and located above the second spur gear ring (37). The movable plate (56) is located on one side of the rotating plate (55), and two opposing sliding columns (57) are horizontally provided at one end of the rotating plate (55) near the movable plate (56). Sliding cylinders (58) are horizontally sleeved on both sliding columns (57), and the outer walls of the two sliding cylinders (58) are fixedly connected to the opposite sides of the movable plate (56). The central groove (42) is opened on the movable plate (56). An extension plate (59) is provided on one side of the rotating plate (55), and the extension plate (59) is connected to the rotating plate (56). 5) Forming a T-shape with the moving plate (56), the top of the extension plate (59) is provided with a square groove (60) along the length of the extension plate (59), and a slider (61) is horizontally connected in the groove (60). A second compression spring (62) is provided on the side of the slider (61) near the rotating plate (55), and the end of the second compression spring (62) away from the slider (61) is fixedly connected to the side wall of the groove (60). A third sprocket (63) is rotatably connected to the bottom end of the slider (61). The chain (46) is used to connect the first sprocket ring (44), the second sprocket ring (45), and the third sprocket (63). The bottom end of the scanner (1) is vertically offset from the bottom end of the second insert (31).

9. An automatic scanning device for inspecting fillet welds in pipes and tube sheets as described in claim 7, characterized in that, The top of the connecting plate (4) is provided with a box (64) for storing coupling agent, and a guide pipe (74) is provided on one side of the box (64). A water pump (66) is provided on the guide pipe (74). A second dispersion ring (69) is coaxially provided on the outside of the sleeve (20) in the second abutment. The ring wall of the second dispersion ring (69) is hollow. A plurality of second spray heads (70) are provided on the inner wall of the second dispersion ring (69), and each second spray head (70) is along the second dispersion ring. The ring (69) is evenly distributed around its circumference. The end of each second spray head (70) near the axis of the second dispersing ring (69) extends through the sleeve (20) into the sleeve (20). An embedded ring (72) is coaxially embedded on the outer wall of the second insert (31). The outer wall of the embedded ring (72) is provided with bristles. The embedded ring (72) is located above each through groove group. The end of the guide pipe (74) away from the box body (64) is connected to the hollow ring wall of the second dispersing ring (69).

Images