A heat exchanger nozzle welding device

Abstract

This invention discloses a heat exchanger nozzle welding device, relating to the field of heat exchanger welding equipment. It includes a base and a clamping plate. The base has a sliding groove on its exterior, and a slider is slidably disposed within the sliding groove. A clamping plate is positioned on top of the slider. The clamping plate has multiple fixing posts for fixing the heat exchanger shell. A column is disposed inside the base, and multiple movable blocks are slidably sleeved on the exterior of the column. A transmission rod is disposed between the movable blocks and the slider. A spring is disposed between two movable blocks, and a connecting rope is disposed between two connecting blocks. A sliding ring is sleeved on the connecting rope. This device enables welding operations on heat exchangers without requiring manual hand-held welding. The slider compresses and fixes the heat exchanger shell by moving the fixing posts, allowing for the fixing of shells of different specifications, ensuring welding quality, and reducing the operational difficulty for workers.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger welding equipment, specifically a heat exchanger nozzle welding equipment. Background Technology

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid. It is also called a heat exchanger. A connecting pipe is an important component of a heat exchanger. Its function is to connect different parts of the pipe, so that the hot and cold fluids can flow smoothly in the pipe and realize the transfer and exchange of heat. A heat exchanger generally has four connecting pipes, which are mainly used for the inlet and outlet of the hot and cold media.

[0003] The nozzle needs to be welded to the shell of the heat exchanger. The nozzle is connected to the fluid pipeline through the flange installed on it. The nozzle is usually welded by hand, which is a complicated and inefficient process. In addition, it cannot fix the shell of the heat exchanger and cannot guarantee the quality of the weld. Summary of the Invention

[0004] The purpose of this invention is to provide a heat exchanger pipe welding device to solve the problem of inconvenience in using existing welding equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A heat exchanger nozzle welding device includes a base and further includes:

[0007] The base has a sliding groove on its outside, a slider is slidably disposed inside the sliding groove, a clamping plate is disposed on the top of the slider, a plurality of fixing columns for fixing the heat exchanger shell are disposed on the clamping plate, a column is disposed inside the base, a plurality of movable blocks are slidably sleeved on the outside of the column, a transmission rod is disposed between the movable blocks and the slider, a spring is disposed between two movable blocks, a connecting block is slidably disposed at the center of the spring, a connecting rope is disposed between two connecting blocks, and a sliding ring is sleeved on the connecting rope;

[0008] A fixed cylinder is provided above the base, a crossbeam is provided on the crossbeam, a support cylinder is provided on the crossbeam, a fixed rod is provided at the center of the inner cavity of the support cylinder, a fixed cylinder for fixing the connecting flange is sleeved on the outside of the fixed rod, multiple fixed plates are provided on the outside of the fixed cylinder, a turntable is provided on the outside of the fixed rod, a support frame is provided on the turntable, a rotating frame is provided at the bottom of the support frame, and a welding head is provided on the rotating frame;

[0009] The transmission mechanism is located between the crossbeam and the sliding ring;

[0010] The drive mechanism is mounted on the support cylinder. The transmission mechanism drives the movable block to descend along the column. The movable block drives multiple sliders to move by cooperating with the transmission rod. The sliders press and fix the heat exchanger shell by driving the fixed column to move. The drive mechanism drives the rotating frame and welding head to rotate. The welding head welds the connecting pipe.

[0011] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0012] In one alternative embodiment: the transmission mechanism includes a traction rope, a cylinder, a guide wheel, and a drive wheel. The cylinder is installed inside the base, and a telescopic rod is installed at the telescopic end of the cylinder. A drive wheel is installed at the top of the telescopic rod. A guide wheel is installed inside the column, and a traction rope is installed outside the drive wheel. One end of the traction rope passes through the guide wheel and is connected to a sliding ring.

[0013] In one alternative: a sleeve is provided on the outer wall of the base, a support plate is provided on the top of the sleeve, a square groove is provided inside the support plate, a fixed sleeve is vertically arranged inside the square groove, a support rod is slidably arranged on the top of the fixed sleeve, an adjusting block is provided at the top of the support rod, the adjusting block is slidably connected to the crossbeam, and one end of the traction rope passes through the inside of the fixed sleeve and is connected to the support rod.

[0014] In one alternative embodiment: the drive mechanism includes a mounting plate, a motor, and a gear set; the mounting plate is mounted on the fixed rod, the motor is mounted on the mounting plate, and the gear set is disposed between the motor and the turntable.

[0015] In one alternative: a gear disk is provided on the inner side wall of the support cylinder, a transmission groove is provided on the rotating frame, a rack is slidably provided on the outside of the rotating frame, a movable rod is provided at the bottom end of the rack, the movable rod passes into the transmission groove and slides with it, and a gear is provided on the rotating frame, the gear meshing with the rack and the gear disk respectively.

[0016] In one alternative: the column has a guide groove inside, the spring is disposed inside the guide groove, and the movable block is slidably disposed outside the column through the movable groove inside the column.

[0017] In one alternative: a support spring is provided inside the fixed sleeve, and one end of the support spring is connected to the support rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The heat exchanger nozzle welding equipment enables welding operations on heat exchangers without the need for manual welding with a handheld welding torch. The transmission mechanism drives a movable block to descend along the column. The movable block, in conjunction with the transmission rod, drives multiple sliders to move. The sliders, in turn, move the fixed column to press and fix the heat exchanger shell. This equipment can fix shells of different specifications, ensuring welding quality. The drive mechanism drives the rotating frame and welding head to rotate, and the welding head welds the nozzle. The welding operation is more convenient and reduces the difficulty of operation for workers. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the welding equipment for the heat exchanger nozzles.

[0021] Figure 2 This is a cross-sectional view of the base in the heat exchanger nozzle welding equipment.

[0022] Figure 3 This is a cross-sectional view of the column in the heat exchanger nozzle welding equipment.

[0023] Figure 4 This is a schematic diagram of the movable block in the heat exchanger nozzle welding equipment.

[0024] Figure 5 This is a cross-sectional view of the support cylinder in the heat exchanger nozzle welding equipment.

[0025] Figure 6 This is a schematic diagram of the rotating frame in the heat exchanger nozzle welding equipment.

[0026] Figure 7 This is a cross-sectional view of the support plate in the heat exchanger nozzle welding equipment.

[0027] Figure 8 This is a schematic diagram of the adjusting block in the heat exchanger nozzle welding equipment.

[0028] Figure reference numerals: 1-base, 101-sliding groove, 2-support plate, 3-slider, 4-clamping plate, 5-fixed column, 6-horizontal plate, 7-sleeve, 8-support plate, 801-square groove, 9-adjusting block, 10-traction rope, 11-crossbeam, 12-support cylinder, 13-fixed cylinder, 14-transmission rod, 15-moving block, 151-moving groove, 16-column, 161-guide groove, 17-reset spring, 18-guide wheel, 19-telescopic rod, 20-drive wheel, 21-cylinder, 22-... -Cable guide tube, 23-Limit block, 24-Spring piece, 25-Sliding ring, 26-Connecting rope, 27-Connecting block, 28-Fixing plate, 29-Motor, 30-Gear set, 31-Fixing rod, 32-Turntable, 33-Support frame, 34-Gear disk, 35-Gear, 36-Rack, 361-Moving rod, 37-Rotating frame, 371-Transmission groove, 38-Welding head, 39-Support rod, 40-Fixing sleeve, 41-Support spring, 42-Rubber column, 43-Mounting plate, 44-Support spring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0031] like Figure 1-8 As shown, a heat exchanger nozzle welding device according to an embodiment of the present invention includes a base 1, and further includes:

[0032] The base 1 has a base plate 4. A sliding groove 101 is formed on the upper surface of the base 1. A slider 3 is slidably mounted inside each of the four sliding grooves 101. A limit block 23 is provided on each slider 3, ensuring that the slider 3 can only slide horizontally along the sliding groove 101. A clamping plate 4 is provided on the top of each slider 3. Multiple fixing posts 5 are provided on the clamping plate 4. The fixing posts 5 are made of elastic material and can compress and fix the heat exchanger shell. A column 16 is fixedly mounted inside the base 1. The top of the column 16 passes through the base 1 and is provided with a support plate 2 for placing the heat exchanger shell. Multiple movable blocks 15 are slidably fitted on the outside of the column 16. A transmission rod 14 is hinged between each movable block 15 and a slider 3. A spring piece 24 is provided between two movable blocks 15. All four movable blocks 15 are slidably fitted on the column 16. The distribution of the movable blocks 15 is as follows: Figure 2As shown, two movable blocks 15 at the same height are connected by a spring sheet 24. The spring sheet 24 is an elastic sheet. The two spring sheets 24 are perpendicular to each other. A connecting block 27 is slidably arranged at the center of the spring sheet 24. A connecting rope 26 is arranged between the two connecting blocks 27. A sliding ring 25 is slidably sleeved on the connecting rope 26. A return spring 17 is sleeved on the outside of the column 16. The return spring 17 is located between the movable blocks 15.

[0033] The connecting rope 26 is pulled down by the sliding ring 25, which in turn pulls the connecting blocks 27 at both ends. The connecting blocks 27 pull the movable block 25 down through the spring piece 24. The movable block 25 drives the slider 3 to slide along the sliding groove 101 through the transmission rod 14, so that the slider 3 drives the fixed column 5 to move closer to the inside of the base 1. Multiple fixed columns 5 move closer to each other and squeeze and fix the heat exchanger shell. When the fixed column 5 contacts the shell, the slider 3 and the movable block 15 connected to the fixed column 5 stop moving. The movable block 15 can no longer continue to descend along the column 16. When the connecting rope 26 pulls the connecting block 27 down, the connecting block 27 drives the spring piece 24 to bend and deform, so that another fixed block 15 at the same height continues to descend, driving another set of sliders 3 and fixed columns 5 to continue to move, which is convenient for fixing heat exchanger shells of different sizes and irregular shapes.

[0034] A fixed cylinder 13 is provided above the base 1, and a crossbeam 11 is provided on the crossbeam 11. A support cylinder 12 is fixedly provided on the crossbeam 11. A fixed rod 31 is slidably provided at the center of the inner cavity of the support cylinder 12. A support spring 44 is sleeved on the outside of the fixed rod 31. A fixed cylinder 13 for fixing the connecting flange is sleeved on the outside of the fixed rod 31. Multiple fixing plates 28 are provided on the outside of the fixed cylinder 13. A wear-enhancing layer is provided on the outer surface of the fixing plates 28. The flange and connecting pipe are fixed by friction. A turntable 32 is rotatably provided on the outside of the fixed rod 31. A support frame 33 is fixedly provided on the side wall of the turntable 32. A rotating frame 37 is rotatably provided at the bottom end of the support frame 33. A welding head 38 is provided on the rotating frame 37. The welding head 38 is a laser welding head, which can perform welding without contacting the outer surface of the connecting pipe.

[0035] The transmission mechanism is located between the crossbeam 11 and the sliding ring 25;

[0036] The drive mechanism is set on the support cylinder 12. The transmission mechanism drives the movable block 15 to descend along the column 16. The movable block 15 drives multiple sliders 3 to move by cooperating with the transmission rod 14. The sliders 3 squeeze and fix the heat exchanger shell by driving the fixed column 5 to move. The drive mechanism drives the rotating frame 33 and the welding head 38 to rotate. The welding head 38 welds the pipe.

[0037] like Figure 1-4As shown, in a preferred embodiment of the present invention, the transmission mechanism includes a traction rope 10, a cylinder 21, a guide wheel 18, and a drive wheel 20. The cylinder 21 is disposed inside the base 1. A telescopic rod 19 is disposed at the telescopic end of the cylinder 21. The drive wheel 20 is disposed at the top of the telescopic rod 19. The guide wheel 18 is disposed inside the column 16. The traction rope 10 is disposed outside the drive wheel 20. One end of the traction rope 10 passes through the guide wheel 18 and is connected to the sliding ring 25. The telescopic rod 19 moves upward and pulls the traction rope 10 upward through the drive wheel 20. The traction rope 10 pulls the sliding ring 25 downward.

[0038] like Figure 1-7 As shown, in a preferred embodiment of the present invention, a horizontal plate 6 is provided on the outer wall of the base 1, and a sleeve 7 is vertically provided on the horizontal plate 6. A support plate 8 is provided on the top of the sleeve 7. The support plate 8 is rotatably mounted on the sleeve 7. By rotating the support plate 8, the position of the welding head 38 can be adjusted. A square groove 801 is provided inside the support plate 8. A fixed sleeve 40 is vertically provided inside the square groove 801. A support rod 39 is slidably provided on the top of the fixed sleeve 40. An adjusting block 9 is provided at the top of the support rod 39. The adjusting block 9 is slidably connected to the crossbeam 11. Multiple [unclear] are provided inside the adjusting block 9. The rubber column 42 allows adjustment of the position of the support cylinder 12 by simply pulling the crossbeam 11. The crossbeam 11 is fixed by friction to prevent slippage. The traction rope 10 passes through the conduit 22 and exits the base 1. One end of the traction rope 10 passes into the fixed sleeve 40 and is connected to the support rod 39. The traction rope 10 pulls the support rod 39 downward, causing the support rod 39 to slide downward along the fixed sleeve 40. The support rod 39 drives the adjusting block 9 and the crossbeam 11 to descend, which in turn drives the welding head 38 and the flange pipe on the fixed cylinder 13 to descend. After the pipe contacts the heat exchanger shell, the pipe is welded through the welding head 38.

[0039] like Figure 1-5 As shown, in a preferred embodiment of the present invention, the driving mechanism includes a mounting plate 43, a motor 29 and a gear set 30. The mounting plate 43 is provided on the fixed rod 31, and the motor 29 is provided on the mounting plate 43. The gear set 30 is provided between the motor 29 and the turntable 32. The motor 29 drives the turntable 32 to rotate through the gear set 30, and the turntable 32 drives the rotating frame 33 to rotate.

[0040] like Figure 1-5As shown in a preferred embodiment of the present invention, a gear disk 34 is provided on the inner wall of the support cylinder 12, a transmission groove 371 is provided on the rotating frame 37, a rack 36 is slidably provided on the outside of the rotating frame 33, a movable rod 361 is provided at the bottom end of the rack 36, the movable rod 361 passes into the transmission groove 371 and slides with it, a gear 35 is provided on the rotating frame 33, the gear 35 meshes with the rack 36 and the gear disk 34 respectively; the support cylinder 12 and the fixed cylinder 13 descend, the connecting pipe on the fixed cylinder 13 contacts the heat exchanger shell, the fixed cylinder 13 and the rotating frame 37 stop descending, the support cylinder 12 continues to descend along the fixed rod 31, the gear disk 34 drives the rack 36 to move through the gear 35, the rack 36 drives the rotating frame 37 to rotate through the movable rod 361, which can adjust the position and angle of the welding head 38.

[0041] like Figure 4-8 As shown, in a preferred embodiment of the present invention, the column 16 has a guide groove 161 inside, the spring piece 24 is disposed inside the guide groove 161, and the movable block 15 is slidably disposed outside the column 16 through the movable groove 151 inside.

[0042] like Figure 7 As shown, in a preferred embodiment of the present invention, a support spring 41 is provided inside the fixed sleeve 40, and one end of the support spring 41 is connected to the support rod 39.

[0043] The above embodiments of the present invention provide a heat exchanger nozzle welding device. The heat exchanger shell to be welded is placed on the support plate 2. The flanged nozzle is inserted upward into the outside of the fixed cylinder 13. The fixed cylinder 13 fixes the tubular flange and nozzle through the fixing plate 28. The cylinder 21 drives the telescopic rod 19 and the drive wheel 20 to rise, the traction rope 10 is pulled, the return spring 17 is stretched, the movable block 15 descends along the column 16, the slider 3 drives the clamping plate 4 to move, and multiple fixed columns 5 squeeze and fix the heat exchanger shell. When the shell is completely fixed, the movable block 15 can no longer descend, the other end of the traction rope 10 is pulled and drives the support rod 39 to descend. The support rod 39 drives the crossbeam 11 to descend, the support spring 41 is compressed, the support cylinder 12 drives the fixed cylinder 13 and the nozzle to descend. The nozzle descends to the welding position, the motor 29 drives the turntable 32 to rotate through the gear set 30, the turntable 32 drives the rotating frame 33 and the welding head 38 to rotate, realizing the welding operation of the nozzle.

[0044] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A heat exchanger nozzle welding apparatus comprising a base, characterized in that, Also include: The base is externally provided with a sliding groove, the sliding groove is internally provided with a sliding block, the sliding block is provided with a clamping plate on the top, a plurality of fixing columns for fixing the heat exchanger shell are arranged on the clamping plate, a stand is arranged in the base, a plurality of movable blocks are slidably arranged on the outer side of the stand, a transmission rod is arranged between the movable blocks and the sliding block, a spring is arranged between the two movable blocks, and a connecting block is slidably arranged at the center of the spring, a connecting rope is arranged between the two connecting blocks, and a sliding ring is arranged on the connecting rope. The fixed cylinder is arranged on the upper side of the base, the support cylinder is arranged on the upper side of the beam, the fixed rod is arranged at the center of the inner cavity of the support cylinder, the fixed cylinder is arranged on the outer side of the fixed rod, a plurality of fixed pieces are arranged on the outer side of the fixed rod, the fixed rod is arranged on the outer side of the rotating disc, the support frame is arranged on the rotating disc, the rotating frame is arranged at the bottom end of the support frame, and the welding head is arranged on the rotating frame. The transmission mechanism is arranged between the beam and the sliding ring. The driving mechanism is arranged on the support cylinder, the transmission mechanism drives the movable block to descend along the stand, the movable block drives a plurality of sliding blocks to move through cooperation with the transmission rod, the sliding block extrudes and fixes the heat exchanger shell by driving the fixing column to move, the driving mechanism drives the rotating frame and the welding head to rotate, and the welding head welds the pipe. The transmission mechanism includes a traction rope, a cylinder, a guide wheel and a driving wheel, the cylinder is arranged in the base, the telescopic end of the cylinder is provided with a telescopic rod, the top of the telescopic rod is provided with a driving wheel, the inner side of the stand is provided with a guide wheel, the outer side of the driving wheel is provided with a traction rope, one end of the traction rope passes through the guide wheel and is connected with the sliding ring. The outer side wall of the base is provided with a sleeve, the top of the sleeve is provided with a support plate, a square groove is arranged in the inner side of the support plate, a fixed sleeve is arranged vertically in the inner side of the square groove, a support rod is slidably arranged on the top of the fixed sleeve, an adjusting block is arranged at the top end of the support rod, the adjusting block is slidably connected with the beam, and one end of the traction rope penetrates into the inner side of the fixed sleeve and is connected with the support rod.

2. The heat exchanger tube welding apparatus of claim 1, wherein, The driving mechanism includes a mounting plate, a motor and a gear set, the mounting plate is arranged on the fixed rod, the motor is arranged on the mounting plate, and the gear set is arranged between the motor and the rotating disc.

3. The heat exchanger tube welding apparatus of claim 2, wherein, The inner side wall of the support cylinder is provided with a gear disc, the rotating frame is provided with a transmission groove, the outer side of the rotating frame is provided with a rack, the bottom end of the rack is provided with a movable rod, the movable rod penetrates into the inner side of the transmission groove and is slidably connected with the transmission groove, and the rotating frame is provided with a gear, the gear is respectively engaged with the rack and the gear disc.

4. The heat exchanger tube welding apparatus of claim 1, wherein, The inner side of the stand is provided with a guide groove, the spring is arranged in the guide groove, and the movable block is slidably arranged on the outer side of the stand through the movable groove arranged in the inner side.

5. The heat exchanger tube welding apparatus of claim 1, wherein, The inner side of the fixed sleeve is provided with a supporting spring, one end of the supporting spring is connected with the support rod.

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