CN116460513B - Shell-and-tube heat exchanger welding device and application method thereof - Google Patents
Shell-and-tube heat exchanger welding device and application method thereof Download PDFInfo
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- CN116460513B CN116460513B CN202310532029.3A CN202310532029A CN116460513B CN 116460513 B CN116460513 B CN 116460513B CN 202310532029 A CN202310532029 A CN 202310532029A CN 116460513 B CN116460513 B CN 116460513B
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- 238000003466 welding Methods 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- 230000002146 bilateral effect Effects 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/14—Heat exchangers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a welding device for a shell-and-tube heat exchanger and a use method thereof, which belong to the field of heat exchanger processing equipment and comprise rotating plates, wherein a frame plate is fixedly connected to the center position of the upper end surface of each rotating plate, two pressing rods are rotatably connected to the left side and the right side of each frame plate, a support plate is fixedly connected to the upper end surface of each rotating plate below each pressing rod corresponding to each pressing rod, the upper end surface of each support plate is in a circular arc groove structure, an upward protruding arc plate is fixedly connected to the corresponding position of each pressing rod and each support plate, and a rotating mechanism is arranged at the center position of each rotating plate and used for driving the corresponding rotating plate to rotate so as to enable the heat exchanger on the corresponding support plate to change directions. Can realize when the tube bank of needs welded casing rear end, can start fourth motor drive swivel plate rotatory 180 to make tube bank and the tube sheet of casing rear end transfer to welder rear side, thereby conveniently weld tube bank and the tube sheet of casing rear end, not only improve welding efficiency, still improve application scope.
Description
Technical Field
The invention relates to the field of heat exchanger processing equipment, in particular to a welding device for a shell-and-tube heat exchanger and a use method thereof.
Background
The shell-and-tube heat exchanger is also called a shell-and-tube heat exchanger and consists of a shell, a heat transfer tube bundle, a tube plate, a baffle plate (baffle plate), a tube box and other parts. The shell is cylindrical, a tube bundle is arranged in the shell, and two ends of the tube bundle are fixed on the tube plate.
In the prior art, two ends of a tube bundle of a shell-and-tube heat exchanger are generally fixedly connected with a tube plate in a welding mode. However, most of welding is performed by manually holding a welding gun to weld the tube bundles and the tube plates, and because the tube bundles of the shell-and-tube heat exchanger are few, tens of the tube bundles are more, hundreds of the tube bundles are welded by adopting a manual welding mode, the labor intensity is increased, and the working efficiency is lower.
The Chinese patent with the publication number of CN115106691B discloses a shell-and-tube heat exchanger welding device, a technical scheme is provided, through the setting of first displacement regulation supporting component and second displacement regulation supporting component, when the independent concertina movement of third power telescopic link, the direction movement regulation of third power telescopic link can be followed to the first electric telescopic link that the erection column was located, and similarly, when the concertina movement of second power telescopic link, the flexible direction movement regulation of second power telescopic link can be followed to first electric telescopic link, when the two simultaneous working, can make the oblique direction motion of first electric telescopic link, through the mechanical regulation removal of different directions, to the accurate butt joint of first displacement regulation supporting component structure effect, to the effect that the second displacement regulation supporting component structure played, be convenient for realize the accurate welding work of soldered connection subassembly, the effectual work efficiency and the welding quality that have improved.
The above-mentioned patent is although can improve work efficiency and welding quality, but, the tube bank both ends of fixed tube plate heat exchanger in the shell-and-tube heat exchanger all need with the tube sheet welding, and above-mentioned patent can only weld the one end of tube bank, can't change the other end of direction welding tube bank after the one end welding of tube bank is accomplished to reduce application scope, popularization and use effect is not good enough.
For this purpose, a tube-shell heat exchanger welding device and a method for using the same are proposed.
Disclosure of Invention
The invention aims to provide a welding device for a shell-and-tube heat exchanger and a use method thereof, so as to solve the problems in the background art.
In order to solve the problems, the invention adopts the following technical scheme.
The welding device for the shell-and-tube heat exchanger comprises a rotating plate, wherein a frame plate is fixedly connected to the central position of the upper end surface of the rotating plate, two pressing rods are rotatably connected to the left side and the right side of the frame plate, a support plate is fixedly connected to the upper end surface of the rotating plate below the pressing rods, the upper end surface of the support plate is in a circular arc groove structure, and an upward-protruding arc plate is fixedly connected to the corresponding position of each pressing rod and the support plate;
the rotating mechanism is arranged at the center of the rotating plate and used for driving the rotating plate to rotate so as to enable the heat exchanger on the support plate to turn, so that the tube bundles at two ends of the heat exchanger are conveniently welded;
and the welding mechanism is arranged on the front side of the base and is used for welding the tube bundles and the tube plates at the front end and the rear end of the heat exchanger on the bracket.
Further, through connecting plate fixed connection between two depression bars of frame plate left side, also through connecting plate fixed connection between two depression bars of frame plate right side, the rotating plate up end of two connecting plate central point put below articulates through articulated seat respectively has the second cylinder, and the flexible end of two second cylinders articulates through articulated seat and the connecting plate lower terminal surface of corresponding position respectively.
Further, the welding mechanism comprises a carrier plate erected on the front side of the base, two fixing rings are symmetrically and fixedly connected on the upper end face of the carrier plate, two collecting rings are fixedly connected on the upper end face of the carrier plate, which is close to the rear side, of the carrier plate, a driving shaft is inserted into the fixing rings and the collecting rings in a rotating mode, welding guns are fixedly connected to the rear end of the driving shaft, and the welding guns are electrically connected with the collecting rings through wires.
Further, a third motor is fixedly connected to the center of the upper end face of the carrier plate, a first gear is fixedly connected to the end part of an output shaft of the third motor, a second gear is fixedly connected to the front ends of the two driving shafts, and the second gear is in transmission connection with the first gear through a synchronous belt.
Further, base front side fixedly connected with bottom plate, the bottom plate up end is the rectangle structure near the front side and distributes and have four pillars, four overlap jointly and be equipped with the fly leaf on the pillar, the terminal surface rear side hangs down and is equipped with the hanger plate under the fly leaf, two limit plate lower extreme face bilateral symmetry fixedly connected with two limiting plates, two the central point that the limiting plate corresponds one side each other puts and rotates jointly and be connected with the second lead screw, and two limiting plates are located two guide bars of position symmetry fixedly connected with between the both sides around the second lead screw, bilateral symmetry sliding connection has two fixed plates on two guide bars, and the fixed plate all is connected with second lead screw spiral transmission, and the left side the left surface fixedly connected with second motor of limiting plate, the output shaft of second motor runs through limiting plate and second lead screw left end fixed connection, two the fixed plate lower extreme all is connected with carrier plate up end fixed connection.
Further, two spouts have been seted up to fly leaf up end rear side bilateral symmetry, the slide of hanging plate up end fixedly connected with shape structure, the vertical portion in both ends of controlling of slide respectively with the spout sliding connection of corresponding position, two first cylinders of fly leaf up end bilateral symmetry fixedly connected with, and the flexible end of two first cylinders all with the horizontal part fixed connection of slide.
Further, four pillar upper ends fixedly connected with roof, roof up end is close to front side central point put fixedly connected with first motor, the output shaft of first motor runs through the roof and fixedly connected with first lead screw, first lead screw lower extreme runs through the fly leaf and rotates with the bottom plate to be connected, the fly leaf is connected with first lead screw drive.
Further, the annular outer side surface of the rear end ring of the driving shaft is fixedly connected with a first micro motor in the clockwise direction, the end part of the output shaft of the first micro motor is fixedly connected with a grinding disc of a disc-shaped structure, and the first micro motor is electrically connected with the collecting ring through a wire.
Further, the first micro motor is fixedly connected with a second micro motor around the clockwise rotating direction of the driving shaft, the end part of the output shaft of the second micro motor is fixedly connected with a rotary disc, the annular outer side surface of the rotary disc is fixedly connected with a hairbrush, and the second micro motor is electrically connected with the collecting ring through a wire.
The application method of the shell-and-tube heat exchanger welding device comprises the following steps:
s1: the shells of the two heat exchangers are respectively arranged on support plates at the left side and the right side of the frame plate, and then the two second cylinders are started to drive the two connecting plates to synchronously overturn downwards, so that the compression bars at the left side and the right side of the frame plate are driven to overturn downwards until the arc plates on the compression bars compress the shells of the heat exchangers on the support plates;
s2: starting two first air cylinders to push the sliding plate backwards, so as to drive the carrier plate to move backwards, enabling the two welding guns to respectively correspond to gaps between the tube bundles and the tube plates at the front end of the shell, and then starting a third motor to drive two second gears to synchronously rotate anticlockwise, so that the welding guns are driven to weld the tube bundles and the tube plates;
s3: after the tube bundles at the front end of the shell and the tube plates are welded, when the tube bundles at the rear end of the shell are required to be welded, starting a fourth motor to drive a third gear to rotate, so that a rotating plate is driven to rotate around a fixed shaft, the rotating plate is driven to rotate 180 degrees around the fixed shaft, the tube bundles at the rear end of the shell and the tube plates are rotated to the front end, and a welding mechanism is convenient to weld the tube bundles at the rear end of the shell and the tube plates;
s4: after each tube bundle and the tube plate are welded, the first micro motor can be started to drive the grinding disc to rotate so as to polish welding slag, and then the second micro motor drives the rotary table to rotate, so that the hairbrush on the rotary table can erase scraps generated by polishing on the welding line.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, the two support plates are respectively arranged on the upper end faces of the rotating plates on the left side and the right side of the support plate, the upper end faces of the support plates are of arc-shaped groove structures, so that the rotating plates can bear shells of two heat exchangers at one time, the second air cylinders on the left side and the right side of the support plates drive the compression rods on the left side and the right side of the support plates to overturn downwards respectively, the shells are pressed on the support plates, the shells can be prevented from shaking in the welding process, when the tube bundles at the rear ends of the shells are required to be welded, the fourth motor can be started to drive the rotating plates to rotate 180 degrees, the tube bundles and the tube plates at the rear ends of the shells are enabled to be turned to the rear sides of the welding gun, and therefore the tube bundles and the tube plates at the rear ends of the shells are conveniently welded, so that the welding efficiency is improved, and the application range is also improved.
2. According to the scheme, the two driving shafts are symmetrically arranged on the carrier plate, the welding gun is arranged at the rear end of each driving shaft, the two driving shafts are driven to synchronously rotate through the third motor, so that tube bundles and tube plates at the front ends of the two heat exchanger shells can be welded simultaneously, the first micro motor drives the grinding disc to rotate, welding slag generated by welding can be polished and trimmed, the second micro motor drives the turntable to rotate, and the hairbrush on the turntable is used for erasing scraps attached to the position of the welding seam, so that the welding quality is improved.
Drawings
FIG. 1 is a schematic view of a first view of the overall structure of the present invention;
FIG. 2 is a schematic view of a second perspective of the overall structure of the present invention;
FIG. 3 is a third schematic view of the overall structure of the present invention;
FIG. 4 is a schematic illustration in semi-section of FIG. 1 of the present invention;
FIG. 5 is a schematic illustration in semi-section of FIG. 2 of the present invention;
FIG. 6 is an enlarged schematic view of the invention at A in FIG. 5;
fig. 7 is an enlarged schematic view of the invention at B in fig. 5.
The reference numerals in the figures illustrate:
1. a top plate; 11. a support post; 12. a movable plate; 13. a bottom plate; 14. a first screw rod; 15. a first motor; 16. a chute; 17. a slide plate; 18. a first cylinder; 2. a hanger plate; 21. a limiting plate; 22. a guide rod; 23. a second screw rod; 24. a second motor; 25. a carrier plate; 26. a fixing plate; 3. a third motor; 31. a first gear; 32. a second gear; 33. a drive shaft; 34. a fixing ring; 35. a collecting ring; 4. a welding gun; 41. a first micro motor; 42. grinding; 43. a turntable; 44. a second micro motor; 5. a rotating plate; 51. a support plate; 52. a frame plate; 53. a connecting plate; 54. a compression bar; 55. a second cylinder; 6. a base; 61. a fixed shaft; 62. gear teeth; 63. a pressing plate; 64. a fourth motor; 65. and a third gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
Referring to fig. 1 to 7, a welding device for a shell-and-tube heat exchanger and a method for using the same are disclosed, wherein a frame plate 52 is fixedly connected to the center of the upper end surface of a rotating plate 5, two pressing rods 54 are rotatably connected to the left and right sides of the frame plate 52, a supporting plate 51 is fixedly connected to the upper end surface of the rotating plate 5 below the pressing rods 54 corresponding to the pressing rods 54, the upper end surface of the supporting plate 51 is in a circular arc groove structure, and an upward-protruding arc plate is fixedly connected to the corresponding position of each pressing rod 54 and the supporting plate 51;
the rotating mechanism is arranged at the center of the rotating plate 5 and comprises a base 6, a fixed shaft 61 is fixedly connected to the center of the upper end surface of the base 6, the rotating plate 5 is rotatably sleeved on the fixed shaft 61, a pressing plate 63 is fixedly connected to the upper end surface of the fixed shaft 61, a fourth motor 64 is fixedly connected to the upper end surface of the pressing plate 63, a third gear 65 is fixedly connected to the end part of an output shaft of the fourth motor 64, and a circle of gear teeth 62 meshed with the third gear 65 are uniformly distributed on the upper end surface of the rotating plate 5 close to the outer edge position of the pressing plate 63;
the two compression bars 54 on the left side of the frame plate 52 are fixedly connected through a connecting plate 53, the two compression bars 54 on the right side of the frame plate 52 are fixedly connected through the connecting plate 53, the upper end faces of the rotating plates 5 below the central positions of the two connecting plates 53 are respectively hinged with a second air cylinder 55 through hinge seats, and the telescopic ends of the two second air cylinders 55 are respectively hinged with the lower end faces of the connecting plates 53 at corresponding positions through hinge seats.
By adopting the technical scheme, the radius of the rotating plate 5 is 1500mm, the height of the support plate 51 is 750mm, the radius of the circular groove structure at the upper end of the support plate 51 is 450mm, and the shell with the radius below 450mm can be supported;
the method comprises the steps that at first, telescopic ends of two second air cylinders 55 are in an elongation state, so that two connecting plates 53 are jacked forwards, compression bars 54 on the left side and the right side of a frame plate 52 are in an approximately vertical state, shells of two heat exchangers are conveniently placed on support plates 51 on the left side and the right side of the frame plate 52, then the two second air cylinders 55 are started to drive the two connecting plates 53 to overturn downwards, so that the compression bars 54 on the left side and the right side of the frame plate 52 are driven to overturn downwards synchronously respectively until arc plates on the compression bars 54 are pressed on the shells, the shells are pressed on the support plates 51, the shells cannot shake in the subsequent welding process, and accordingly smooth welding work is guaranteed, a welding mechanism is arranged on the front side frame of a base 6, tube bundles and tube sheets on the front ends of the two shells can be welded simultaneously through the welding structure, and therefore welding efficiency is improved;
after the front end tube bundle of the fixed tube-sheet heat exchanger is welded, the fourth motor 64 can be started to drive the third gear 65 to rotate, and the gear teeth 62 meshed with the third gear 65 are uniformly distributed on the upper end face of the rotating plate 5 close to the outer edge of the pressing plate 63, so that the rotating plate 5 can be driven to rotate around the fixed shaft 61 until the rotating plate 5 rotates 180 degrees, the fourth motor 64 is closed, the rear end of the shell is aligned with a welding mechanism on the front side of the base 6, the tube bundle at the rear end of the shell is welded, the floating head type heat exchanger and the U-shaped tube heat exchanger can be welded, the tube-sheet heat exchanger can be welded and fixed, and the application range is improved.
As shown in fig. 1, fig. 2, fig. 4, fig. 5 and fig. 6, the welding mechanism comprises a carrier plate 25 erected on the front side of the base 6, two fixing rings 34 are symmetrically and fixedly connected on the left and right sides of the upper end face of the carrier plate 25 near the front side, two collecting rings 35 are fixedly connected on the upper end face of the carrier plate 25 near the rear side corresponding to the two fixing rings 34, a driving shaft 33 is inserted in the fixing rings 34 and the collecting rings 35 in a co-rotation manner, welding guns 4 are fixedly connected at the rear ends of the driving shafts 33, the welding guns 4 are electrically connected with the collecting rings 35 through wires, a third motor 3 is fixedly connected at the center position of the upper end face of the carrier plate 25, a first gear 31 is fixedly connected at the end part of an output shaft of the third motor 3, second gears 32 are fixedly connected at the front ends of the two driving shafts 33, and the second gears 32 are in transmission connection with the first gears 31 through synchronous belts;
the front side of the base 6 is fixedly connected with a bottom plate 13, four supporting columns 11 are distributed on the upper end surface of the bottom plate 13, which is close to the front side, and are in rectangular structure, a movable plate 12 is sleeved on the four supporting columns 11, a hanging plate 2 is hung on the rear side of the lower end surface of the movable plate 12, two limiting plates 21 are fixedly connected on the left side and right side of the lower end surface of the hanging plate 2, a second screw rod 23 is fixedly connected in a rotating manner at the center position of one side corresponding to the two limiting plates 21, two guide rods 22 are symmetrically and fixedly connected at positions between the front side and the rear side of the second screw rod 23, two fixing plates 26 are symmetrically and slidingly connected on the two guide rods 22, the fixing plates 26 are in spiral transmission connection with the second screw rod 23, a second motor 24 is fixedly connected on the left side surface of the limiting plate 21, an output shaft of the second motor 24 penetrates through the limiting plates 21 and is fixedly connected with the left end of the second screw rod 23, the lower ends of the two fixing plates 26 are fixedly connected with the upper end face of the carrier plate 25, two sliding grooves 16 are symmetrically arranged on the rear side of the upper end face of the movable plate 12, a -shaped sliding plate 17 is fixedly connected with the upper end face of the hanging plate 2, the vertical parts of the left end and the right end of the sliding plate 17 are respectively and slidably connected with the sliding grooves 16 at corresponding positions, two first air cylinders 18 are fixedly connected with the upper end face of the movable plate 12 in a bilateral symmetry manner, the telescopic ends of the two first air cylinders 18 are fixedly connected with the horizontal parts of the sliding plate 17, the upper ends of the four support posts 11 are fixedly connected with the top plate 1, the upper end face of the top plate 1 is fixedly connected with a first motor 15 near the center position of the front side, an output shaft of the first motor 15 penetrates through the top plate 1 and is fixedly connected with a first screw rod 14, the lower end of the first screw rod 14 penetrates through the movable plate 12 and is rotationally connected with the bottom plate 13, the movable plate 12 is in screw transmission connection with the first screw rod 14.
By adopting the technical scheme, after the shell is pressed on the support plate 51 by the pressing rod 54, the two first cylinders 18 are simultaneously started to push the sliding plate 17 backwards, so as to drive the hanger plate 2 to move backwards, and then drive the carrier plate 26 to move backwards, so that the two welding guns 4 are close to the tube plates at the front ends of the shells at the corresponding positions, then the first motor 15 is started to drive the first screw rod 14 to rotate forwards, so as to drive the movable plate 12 to descend, and then each driving shaft 33 is aligned with the center of the front side surface of the leftmost tube bundle on the tube plate at the corresponding position, so that the gun heads of the welding guns 4 are aligned with the connecting position between the tube bundle and the tube plate, a controller is arranged on the driving shaft 33, the opening and closing of the welding guns 4 can be controlled by the controller, the controller is in wireless connection with a computer of the control room, then the two collecting rings 35 are electrified, the controller is controlled remotely by the computer, the two welding guns 4 start to work by turning on the switch of the two welding guns 4, the third motor 3 is started to drive the first gear 31 to rotate anticlockwise, so as to drive the two second gears 32 to rotate anticlockwise synchronously, and further drive the two driving shafts 33 to rotate anticlockwise synchronously, so that the two welding guns 4 can rotate around the connection positions of the tube bundles and the tube plates at the positions of the two welding guns, and the welding of the single tube bundles and the tube plates is completed, the arrangement of the collecting ring 35 can ensure that the welding guns 4 can rotate along with the driving shafts 33 so as not to cause the wire to wind, after the welding of the single tube bundle is completed, the welding guns 4 can be temporarily closed, the second motor 24 is started to drive the second screw rod 23 to rotate forwards, so as to drive the two fixing plates 25 to move rightwards synchronously, so that the welding guns 4 reach the connection position between the next tube bundle in the same row and the tube plates, and after the welding of the tube bundles in the same row is completed, the first motor 15 can be started again to drive the first screw rod 14 to rotate forward, so that the carrier plate 25 is driven to move downwards to enable the driving shaft 33 to be aligned with the center position of the front side face of the tube bundle at the rightmost side of the second row, then the welding gun 4 is started, the third motor 3 is started to drive the welding gun 4 to rotate around the welding position of the tube bundle and the tube plate, after the tube bundle at the rightmost side of the second row is welded, the second motor 24 is started to drive the second screw rod 23 to rotate reversely to drive the welding gun 4 to move leftwards, and the operation is repeated in a circulating mode until the welding of all the tube bundles at the front end of the shell is completed, the tube bundles and the tube plates at the front ends of two shells can be welded at one time, and the working efficiency is improved.
As shown in fig. 1 and 6, the annular outer side surface of the rear end of the driving shaft 33 is fixedly connected with a first micro motor 41 in a clockwise direction, the end part of the output shaft of the first micro motor 41 is fixedly connected with a grinding disc 42 with a disc-shaped structure, the first micro motor 41 is electrically connected with the collecting ring 35 through a wire, the first micro motor 41 is fixedly connected with a second micro motor 44 in a clockwise rotating direction around the driving shaft 33, the end part of the output shaft of the second micro motor 44 is fixedly connected with a rotary disc 43, the annular outer side surface of the rotary disc 43 is fixedly connected with a brush, and the second micro motor 44 is electrically connected with the collecting ring 35 through a wire.
Through adopting above-mentioned technical scheme, with first micro motor 41, second micro motor 44 all with the controller electric connection on the drive shaft 33, at welder 4 welding tube bank's in-process, start first micro motor 41 and second micro motor 44 simultaneously, first micro motor 41 drives abrasive disc 42 rotation, second micro motor 44 drives carousel 43 rotation, and the motion track of abrasive disc 42 and carousel 43 is rotatory around the welding seam between tube bank and the tube sheet, when abrasive disc 42 and the convex welding slag on the welding seam contact, can polish the welding slag, thereby get rid of unnecessary welding slag, make the welding seam become slick and tidy pleasing to the eye, the in-process that abrasive disc 42 polished the welding slag can produce the piece, the piece can be attached to the welding seam, the piece on the welding seam is erased to the brush on the carousel 43, thereby improve the effect of polishing, after welder 4 revolves round the carousel, drive shaft 33 continues to rotate, until carousel 43 revolves round the tube bank, thereby accomplish the whole of polishing and clearance to the welding seam.
The application method of the shell-and-tube heat exchanger welding device comprises the following steps:
s1: the shells of the two heat exchangers are respectively arranged on the support plates 51 on the left side and the right side of the frame plate 52, and then the two second cylinders 55 are started to drive the two connecting plates 53 to synchronously overturn downwards, so that the compression bars 54 on the left side and the right side of the frame plate 52 are driven to overturn downwards until the arc plates on the compression bars 54 compress the shells of the heat exchangers on the support plates 51;
s2: starting two first cylinders 18 to push the sliding plate 17 backwards, so as to drive the carrier plate 25 to move backwards, enabling the two welding guns 4 to respectively correspond to gaps between the tube bundles and the tube plates at the front ends of the shells, and then starting a third motor 3 to drive two second gears 32 to synchronously rotate anticlockwise, so as to drive the welding guns 4 to weld the tube bundles and the tube plates;
s3: after the tube bundles at the front end of the shell and the tube plates are welded, when the tube bundles at the rear end of the shell are required to be welded, the fourth motor 64 is started to drive the third gear 65 to rotate, so that the rotating plate 5 is driven to rotate around the fixed shaft 61, the rotating plate 5 rotates 180 degrees around the fixed shaft 61, the tube bundles at the rear end of the shell and the tube plates are rotated to the front end, and the welding mechanism is convenient for welding the tube bundles at the rear end of the shell and the tube plates;
s4: after each tube bundle and the tube plate are welded, the first micro motor 41 can be started to drive the grinding disc 42 to rotate so as to polish welding slag, and the second micro motor 44 can drive the rotary table 43 to rotate, so that the hairbrush on the rotary table 43 can erase scraps generated by polishing on the welding line.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (5)
1. A welding device for a shell-and-tube heat exchanger is characterized in that: the rotary plate comprises a rotary plate (5), wherein a frame plate (52) is fixedly connected to the center of the upper end surface of the rotary plate (5), two compression rods (54) are rotatably connected to the left side and the right side of the frame plate (52), a support plate (51) is fixedly connected to the upper end surface of the rotary plate (5) below the compression rods (54) corresponding to the compression rods (54), the upper end surface of the support plate (51) is in a circular arc groove structure, and an upward-protruding arc plate is fixedly connected to the corresponding position of each compression rod (54) and the support plate (51);
the rotating mechanism is arranged at the center of the rotating plate (5) and used for driving the rotating plate (5) to rotate so as to enable the heat exchanger on the support plate (51) to turn, so that the tube bundles at two ends of the heat exchanger can be welded conveniently, the heat exchanger comprises a base (6), a fixed shaft (61) is fixedly connected to the center of the upper end face of the base (6), the rotating plate (5) is rotationally sleeved on the fixed shaft (61), a pressing plate (63) is fixedly connected to the upper end face of the fixed shaft (61), a fourth motor (64) is fixedly connected to the upper end face of the pressing plate (63), a third gear (65) is fixedly connected to the end part of an output shaft of the fourth motor (64), and a circle of gear teeth (62) meshed with the third gear (65) are uniformly distributed at the outer edge position of the upper end face of the rotating plate (5) close to the pressing plate (63);
the welding mechanism is arranged at the front side of the base (6) and is used for welding the tube bundles and the tube plates at the front end and the rear end of the heat exchanger on the bracket;
the welding mechanism comprises a carrier plate (25) erected on the front side of a base (6), two fixing rings (34) are symmetrically and fixedly connected on the upper end face of the carrier plate (25) close to the front side in a left-right symmetry manner, two collecting rings (35) are fixedly connected on the upper end face of the carrier plate (25) close to the rear side corresponding to the two fixing rings (34), a driving shaft (33) is inserted in the fixing rings (34) on the same side and the collecting rings (35) in a co-rotating manner, welding guns (4) are fixedly connected at the rear ends of the driving shaft (33), and the welding guns (4) are electrically connected with the collecting rings (35) through wires;
the center of the upper end surface of the carrier plate (25) is fixedly connected with a third motor (3), the end part of an output shaft of the third motor (3) is fixedly connected with a first gear (31), the front ends of two driving shafts (33) are fixedly connected with a second gear (32), and the second gear (32) is in transmission connection with the first gear (31) through a synchronous belt;
the front side of the base (6) is fixedly connected with a bottom plate (13), four supporting columns (11) are distributed on the upper end face of the bottom plate (13) close to the front side in a rectangular structure, movable plates (12) are sleeved on the four supporting columns (11) together, hanging plates (2) are hung on the rear side of the lower end face of the movable plates (12), two limiting plates (21) are fixedly connected to the left side and the right side of the lower end face of the hanging plates (2) in a bilateral symmetry mode, a second screw rod (23) is fixedly connected to the central positions of the two limiting plates (21) in a mutual correspondence mode in a mutual rotation mode, two guide rods (22) are symmetrically and fixedly connected to positions, located between the front side and the rear side of the second screw rod (23), two fixing plates (26) are symmetrically and slidingly connected to the two guide rods (22), the fixing plates (26) are in spiral transmission connection with the second screw rod (23), the left side face of the limiting plates (21) is fixedly connected with a second motor (24), and an output shaft of the second motor (24) penetrates through the limiting plates (21) and the second screw rod (23), and the two fixing plates (25) are fixedly connected to the upper end faces of the two guide rods;
two sliding grooves (16) are symmetrically formed in the left and right sides of the rear side of the upper end face of the movable plate (12), a -shaped sliding plate (17) is fixedly connected to the upper end face of the hanging plate (2), vertical parts at the left and right ends of the sliding plate (17) are respectively connected with the sliding grooves (16) at corresponding positions in a sliding mode, two first air cylinders (18) are symmetrically and fixedly connected to the left and right sides of the upper end face of the movable plate (12), and telescopic ends of the two first air cylinders (18) are fixedly connected with horizontal parts of the sliding plate (17);
the upper ends of the four supporting columns (11) are fixedly connected with a top plate (1), the upper end surface of the top plate (1) is fixedly connected with a first motor (15) near the center of the front side, an output shaft of the first motor (15) penetrates through the top plate (1) and is fixedly connected with a first screw rod (14), the lower end of the first screw rod (14) penetrates through a movable plate (12) and is rotationally connected with a bottom plate (13), and the movable plate (12) is in spiral transmission connection with the first screw rod (14);
the second motor (24) is started to drive the second screw rod (23) to rotate forward, so that the two fixing plates (25) are driven to synchronously move rightward, the welding gun (4) reaches the connection position between the next tube bundle in the same row and the tube plate, after the tube bundles in the same row are all welded, the first motor (15) can be started again to drive the first screw rod (14) to rotate forward, so that the carrier plate (25) is driven to move downward, the driving shaft (33) is aligned with the center position of the front side surface of the tube bundle on the rightmost side of the second row, then the welding gun (4) is started, the third motor (3) is started to drive the welding gun (4) to rotate around the welding position of the tube bundle and the tube plate, and after the welding of the tube bundle on the rightmost side of the second row is completed, the second motor (24) is started to drive the second screw rod (23) to rotate reversely to drive the welding gun (4) to move leftward.
2. A shell and tube heat exchanger welding apparatus as set forth in claim 1 wherein: two depression bars (54) on the left side of frame plate (52) are through connecting plate (53) fixed connection, also be through connecting plate (53) fixed connection between two depression bars (54) on the right side of frame plate (52), the rotatory board (5) up end of two connecting plate (53) central point put below has second cylinder (55) through articulated seat articulated respectively, and the flexible end of two second cylinders (55) is articulated with connecting plate (53) lower extreme face in corresponding position through articulated seat respectively.
3. A shell and tube heat exchanger welding apparatus as set forth in claim 1 wherein: the electric motor is characterized in that a first micro motor (41) is fixedly connected to the annular outer side face of the rear end of the driving shaft (33) along the clockwise direction, a disc-shaped grinding disc (42) is fixedly connected to the end portion of an output shaft of the first micro motor (41), and the first micro motor (41) is electrically connected with the collecting ring (35) through a wire.
4. A shell and tube heat exchanger welding apparatus as set forth in claim 3 wherein: the first micro motor (41) is fixedly connected with a second micro motor (44) around the clockwise rotating direction of the driving shaft (33), the end part of the output shaft of the second micro motor (44) is fixedly connected with a rotary disc (43), the annular outer side surface of the rotary disc (43) is fixedly connected with a hairbrush, and the second micro motor (44) is electrically connected with the collecting ring (35) through a wire.
5. A method of use for a shell and tube heat exchanger welding apparatus as claimed in any one of claims 1 to 4, wherein: the method comprises the following steps:
s1: the shells of the two heat exchangers are respectively arranged on support plates (51) on the left side and the right side of a frame plate (52), and then two second cylinders (55) are started to drive two connecting plates (53) to synchronously overturn downwards, so that a compression rod (54) on the left side and the right side of the frame plate (52) is driven to overturn downwards until an arc-shaped plate on the compression rod (54) compresses the shells of the heat exchangers on the support plates (51);
s2: starting two first air cylinders (18) to push sliding plates (17) backwards, so that a carrier plate (25) is driven to move backwards, two welding guns (4) respectively correspond to gaps between a tube bundle and a tube plate at the front end of a shell, and then starting a third motor (3) to drive two second gears (32) to synchronously rotate anticlockwise, so that the welding guns (4) are driven to weld the tube bundle and the tube plate;
s3: after the tube bundles at the front end of the shell and the tube plates are welded, when the tube bundles at the rear end of the shell are required to be welded, a fourth motor (64) is started to drive a third gear (65) to rotate, so that a rotating plate (5) is driven to rotate around a fixed shaft (61), the rotating plate (5) is driven to rotate 180 degrees around the fixed shaft (61), the tube bundles at the rear end of the shell and the tube plates are enabled to be turned to the front end, and a welding mechanism is convenient to weld the tube bundles at the rear end of the shell and the tube plates;
s4: after each tube bundle and the tube plate are welded, the first micro motor (41) can be started to drive the grinding disc (42) to rotate so as to polish welding slag, and the second micro motor (44) is used to drive the rotary disc (43) to rotate, so that the hairbrush on the rotary disc (43) can erase scraps generated by polishing on the welding line.
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| CN116652477B (en) * | 2023-08-02 | 2023-09-26 | 北京华艾鑫节能设备有限公司 | Omnibearing seamless automatic welder for heat exchanger processing and welding method thereof |
| CN116984807B (en) * | 2023-09-18 | 2023-12-22 | 安徽开诚电器有限公司 | High-precision automatic welding mechanism |
| CN117399830B (en) * | 2023-11-15 | 2024-03-26 | 安徽苏东石化电力设备制造集团有限公司 | Numerical control automatic welding equipment for heat exchanger tube plates |
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