Manufacturing process of heat exchange type reformer tube with array fins

Abstract

The invention relates to the technical field of furnace tube manufacturing, in particular to a manufacturing process of a heat exchange type reformer tube with array fins, which is characterized by comprising the process steps of cleaning, feeding and clamping, mixing and feeding powder, and welding fins. According to the device, the walking module drives the laser head to move in the axial direction of the conversion pipe, alloy mixed powder is melted on the outer wall of the conversion pipe through laser, so that the fins are formed on the outer wall of the conversion pipe in a cladding mode, the array fins are additionally arranged outside the conversion pipe through the laser cladding technology, and manufacturing of the array fins on the conversion pipe can be rapidly achieved. The fins can increase the heat transfer area of the conversion tube, the heat exchange efficiency of the conversion tube can be improved, and further the production capacity of synthetic ammonia can be improved, a plurality of supporting plates are fixedly connected through a supporting rod, the middle of the conversion tube can be supported through the supporting plates on the supporting rod, and the supporting plates cross over the deposited fins; therefore, the side wall of the conversion tube can be continuously supported.

Description

Technical Field

[0001] The present invention relates to the technical field of furnace tube manufacturing, and specifically to a manufacturing process for a heat exchange type reforming furnace tube with array fins. Background Art

[0002] In a heat exchange type reforming furnace for ammonia synthesis, the high-temperature secondary reformed gas flows upward through the annular gap between the reforming tube and the outer sleeve tube, and exchanges heat with the reforming tube. The gas temperature gradually decreases from 1000 °C at the inlet to 500 °C at the outlet. Since the outlet temperature is relatively low, the heat transfer in the outlet area is mainly convective heat transfer. Compared with the radiative and convective heat transfer of the high-temperature gas in the inlet area, the heat transfer efficiency in the outlet area is relatively low. Therefore, as the temperature gradually decreases, about 1 / 3 to 1 / 2 of the length of the reforming tube does not receive sufficient heat exchange. For a heat exchange type reforming furnace for ammonia synthesis with an annual output of 200,000 tons, usually 204 reforming tubes are provided, and the size of the heat exchange type reforming furnace is relatively large. When it is necessary to improve the ammonia synthesis production efficiency, if only the number of reforming tubes is increased to increase the ammonia production, the diameter of the heat exchange type reforming furnace will also increase accordingly, which brings certain difficulties to the design of the outer shell and large flange of the heat exchange type reforming furnace. Summary of the Invention

[0003] The purpose of the present invention is to provide a manufacturing process for a heat exchange type reforming furnace tube with array fins to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A manufacturing process for a heat exchange type reforming furnace tube with array fins, characterized by including the technological steps of cleaning - loading and clamping - mixing and powder feeding - welding fins, and the specific steps are as follows:

[0006] Step 1 Cleaning: Use acetone to clean the outer wall of the processed reforming tube to remove impurities on the outer wall of the reforming tube.

[0007] Step 2 Loading and Clamping: Transport the reforming tube to the corresponding clamping module, and use two clamping modules to clamp and position two reforming tubes respectively.

[0008] Step 3 Mixing and Powder Feeding: Mix alloy powder and sintering agent in a certain proportion and load them into the powder feeding tank of the powder feeder. Open the powder-carrying gas valve of the powder feeder, and transport the alloy mixed powder to the laser head of the laser welding equipment through the powder-carrying gas, so that the mixed powder enters the welding nozzle of the laser head.

[0009] Step 4: Welding fins: The laser head of the laser welding equipment is set on the walking module. According to the position, shape and size information of the array fins to be formed on the conversion tube pre-input into the control console, the laser head is driven to move axially through the walking module, and the fins are formed on the outside of the conversion tube by melting the welding nozzle. The angle of the conversion tube is adjusted by the clamping module to form an array of fins on the outside of the conversion tube.

[0010] Furthermore, the laser head in step three and step four is equipped with a water cooling system, and the laser head is cooled by the water cooling system.

[0011] Furthermore, after the outer wall of the conversion tube is cleaned in step one, the conversion tube is first dried using compressed air, and then the conversion tube is transported to the corresponding clamping module.

[0012] Furthermore, the walking module includes a base plate, a walking seat, an adjustment seat, a mounting seat, and a welding seat;

[0013] The walking seat is arranged on the top of the bottom plate, and a plurality of walking wheels are arranged at the bottom of the walking seat, and the walking wheels can roll along the top surface of the bottom plate, and two guide rails in contact with adjacent walking wheels are fixedly connected to the top surface of the bottom plate, and a power mechanism capable of driving the walking wheels to rotate is arranged inside the walking seat;

[0014] The adjustment seat is arranged on the top of the walking seat;

[0015] The mounting seat is arranged on the top of the adjusting seat, and the mounting seat is rotatably arranged on the top surface of the adjusting seat;

[0016] The welding seat is fixedly connected to the mounting seat, and the laser head is fixedly connected to the end of the welding seat.

[0017] Furthermore, the mounting seat is fixedly connected with a laser ranging sensor 1 and a laser ranging sensor 2, the adjusting seat is fixedly connected with an adjusting motor inside, the output end of the adjusting motor is transmission-connected with a connecting shaft rotatably connected to the adjusting seat, the top end of the connecting shaft is fixedly connected to the bottom of the mounting seat, the laser ranging sensor 1 and the laser ranging sensor 2 are respectively located on both sides of the mounting seat, and the laser ranging sensor 1 and the welding seat are located on the same side of the mounting seat.

[0018] Preferably, the walking seat is slidably connected to an adjustment plate fixedly connected to the bottom of the adjustment seat, the bottom surface of the adjustment plate is fixedly connected to a sliding block slidably connected to the inside of the walking seat, the inside of the walking seat is fixedly connected to an electric telescopic rod, and the output end of the electric telescopic rod is transmission-connected to the sliding block.

[0019] Preferably, the clamping module comprises a fixing frame, a lifting mechanism, two support rods, two clamping mechanisms, and two telescopic mechanisms;

[0020] The lifting mechanism is arranged inside the fixed frame. The lifting mechanism includes a support frame and a sliding frame. The sliding frame is slidably connected inside the support frame. The support frame is fixedly connected to the fixed frame. A first hydraulic rod is fixedly connected inside the support frame, and the output end of the first hydraulic rod is drivingly connected to the inside of the sliding frame;

[0021] Both of the two support rods are rotatably connected to the top of the sliding frame. The support rods are fixedly connected with a plurality of support plates. The support plates are provided with a plurality of opening grooves, and a plurality of round beads are rotatably connected inside the support plates;

[0022] Two clamping mechanisms are respectively arranged on both sides of the fixed frame;

[0023] Two telescopic mechanisms are respectively arranged on both sides of the fixed frame, and the two telescopic mechanisms are located between the two clamping mechanisms;

[0024] On the inner side of the top of the sliding frame, two power motors are fixedly connected. The output ends of the power motors are drivingly connected with transmission shafts. Two rotating shafts are rotatably connected to the inner side of the sliding frame. The transmission shafts and the rotating shafts are fixedly sleeved with bevel gears, and adjacent bevel gears are meshed and driven. Two positioning shafts fixedly connected with the adjacent support rods are rotatably connected to the sliding frame. The rotating shafts are fixedly sleeved with worms, and the positioning shafts are fixedly sleeved with worm wheels, and the worms are meshed with the adjacent worm wheels.

[0025] Furthermore, the clamping mechanism includes a base, a limiting frame, a clamping seat, a conical seat, and a second hydraulic rod;

[0026] A plurality of support wheels are arranged at the bottom of the base;

[0027] The limiting frame is fixedly connected to the base;

[0028] The clamping seat is slidably connected to the limiting frame;

[0029] The conical seat is rotatably connected to the clamping seat, and the conical seat is located on the side of the clamping seat close to the fixed frame;

[0030] The second hydraulic rod is fixedly connected inside the limiting frame, and the output end of the second hydraulic rod is drivingly connected to the inside of the clamping seat.

[0031] Furthermore, one of the clamping seats is fixedly connected with a connecting motor. The output end of the connecting motor is drivingly connected with a limiting shaft rotatably connected to one of the clamping seats, and the end of the limiting shaft is fixedly connected with the adjacent conical seat.

[0032] Preferably, the telescopic mechanism includes a connecting seat, a sliding seat, a driving motor, and an adjusting screw rod;

[0033] The connecting seat is fixedly connected to the fixed frame;

[0034] The sliding seat is slidably connected inside the connecting seat, and the end of the sliding seat is fixedly connected to the adjacent limiting frame;

[0035] The driving motor is fixedly connected inside the connecting seat;

[0036] The adjusting screw rod is screwed and connected inside the sliding seat, and the output end of the driving motor is in transmission connection with the adjusting screw rod;

[0037] A guiding plate and a limiting plate are arranged on the top of the fixed frame. A connecting plate is arranged at the bottom of the guiding plate. Support frames are fixedly connected to the bottoms of the guiding plate and the connecting plate. Two positioning frames I fixedly connected to the fixed frame are arranged at the bottom of the limiting plate. A positioning frame II slidably connected with the bottom surface of the limiting plate is arranged in the positioning frame I. A hydraulic rod III is fixedly connected inside the positioning frame I, and the output end of the hydraulic rod III is in transmission connection with the inner top surface of the positioning frame II.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0039] 1. The walking module drives the laser head to move along the axial direction of the conversion tube. The alloy mixed powder can be sent to the laser head through the powder feeder, and the alloy mixed powder is melted on the outer wall of the conversion tube by the laser, so as to form fins by laser cladding on the outer wall of the conversion tube. Adding an array of fins to the outside of the conversion tube by laser cladding technology is beneficial to quickly realize the manufacture of the array of fins on the conversion tube. The fins can increase the heat transfer area of the conversion tube, which is beneficial to improving the heat exchange efficiency of the conversion tube, and further beneficial to improving the ammonia synthesis production capacity, and there is no need to increase the diameter of the conversion furnace.

[0040] 2. A number of support plates are fixedly connected by the support rod. After the two clamping mechanisms clamp the conversion tube, the support rod can be lifted by the lifting mechanism, and the middle part of the conversion tube is supported by the support plates on the support rod. When adjusting the angle of the conversion tube after cladding one fin, the support rod can drive the support plate to rotate, so that the support plate straddles the already clad fin, and then the next support plate on the support rod continues to support the conversion tube. In this way, the side wall of the conversion tube can be continuously supported, and the influence of the fin on the support of the conversion tube is minimized, which is beneficial to stably supporting the conversion tube.

[0041] 3. A laser distance sensor I is fixedly connected by the mounting seat. When the walking module drives the laser head to move axially, the laser distance sensor I can detect the already clad fins to understand whether there is a certain depression. If there is a depression, when re-cladding the fins subsequently, the moving speed of the walking module can be reduced according to the depth of the depression, and the powder feeding speed can be increased, so as to clad more alloy mixed powder in the depressed area and make up the depressed area as much as possible, which is beneficial to ensuring the cladding quality of the fins and making the width of the fins reach the production requirements as much as possible. Description of the Drawings

[0042] Figure 1 is a schematic diagram of the process flow of the present invention;

[0043] Figure 2 is a schematic diagram of the structure of the walking module and the clamping module in the present invention;

[0044] Figure 3 is a side view schematic diagram of the structure of the walking module and the clamping module in the present invention;

[0045] Figure 4 is a schematic diagram of the structure of the clamping module in the present invention;

[0046] Figure 5 is a schematic diagram of the structure of the walking module in the present invention;

[0047] Figure 6 is a schematic diagram of the internal structure of the adjusting seat in the present invention;

[0048] Figure 7 is a schematic diagram of the internal structure of the clamping mechanism and the telescopic mechanism in the present invention;

[0049] Figure 8 is Figure 7 an enlarged view of part A of

[0050] Figure 9 is a schematic diagram of the structure of the support rod supporting the conversion tube in the present invention;

[0051] Figure 10 is a schematic diagram of the structure of the support plate in the present invention;

[0052] Figure 11 is a schematic diagram of the structure of the guide plate in the present invention;

[0053] Figure 12 is a schematic diagram of the internal structure of the first positioning frame in the present invention.

[0054] In the figure: 100, traveling module; 110, bottom plate; 120, traveling seat; 121, adjusting plate; 122, sliding block; 123, electric telescopic rod; 124, traveling wheel; 130, adjusting seat; 131, adjusting motor; 132, connecting shaft; 140, mounting seat; 141, first laser distance sensor; 142, second laser distance sensor; 150, welding seat; 200, clamping module; 210, fixed frame; 220, lifting mechanism; 221, support frame; 222, sliding frame; 223, first hydraulic rod; 224, power motor; 225, transmission shaft; 226, rotating shaft; 2261, worm; 227, bevel gear; 228, positioning shaft; 2281, worm gear; 230, support rod; 231, support plate; 232, opening groove; 240, clamping mechanism; 241, base; 242, limiting frame; 243, clamping seat; 244, conical seat; 245, second hydraulic rod; 250, telescopic mechanism; 251, connecting seat; 252, sliding seat; 253, driving motor; 254, adjusting lead screw; 260, connecting motor; 261, limiting shaft; 300, guiding plate; 400, limiting plate; 410, first positioning frame; 420, second positioning frame; 430, third hydraulic rod; 500, connecting plate. Detailed implementation manners

[0055] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0056] Please refer to Figures 1-5 , in the embodiment of the present invention, a manufacturing process for a heat exchange type reforming furnace tube with array fins is characterized by including the process steps of cleaning - loading and clamping - mixing and powder feeding - welding fins, and the specific steps are as follows:

[0057] Step 1 Cleaning: Use acetone to clean the outer wall of the processed reforming tube to remove impurities on the outer wall of the reforming tube.

[0058] Step 2 Loading and clamping: Transport the reforming tube to the corresponding clamping module 200, and respectively clamp and position the two reforming tubes through the two clamping modules 200.

[0059] Step 3 Mixing and powder feeding: Mix the alloy powder and the sintering agent in a certain proportion and load them into the powder feeding tank of the powder feeder. Open the powder carrying gas valve of the powder feeder, and transport the alloy mixed powder to the laser head of the laser cladding equipment through the powder carrying gas, so that the mixed powder enters the cladding nozzle of the laser head.

[0060] Step 4: Cladding fins: The laser head of the laser cladding equipment is set on the traveling module 100. According to the position, shape, and size information of the array fins to be formed on the conversion tube pre-input into the console, the traveling module 100 drives the laser head to move axially, and the fins are formed by cladding outside the conversion tube through the cladding nozzle. The angle of the conversion tube is adjusted by the clamping module 200 to form array fins outside the conversion tube;

[0061] After cleaning the outer wall of the conversion tube in Step 1, first use compressed air to dry the conversion tube, and then transport the conversion tube to the corresponding clamping module 200. The laser head in Step 3 and Step 4 is equipped with a water cooling system to cool the laser head through the water cooling system.

[0062] The laser cladding equipment includes a console, a laser power supply, a process gas control cabinet, a laser head, a powder feeder, a traveling module 100, and two clamping modules 200;

[0063] The laser head is set on the traveling module 100. The laser power supply is connected to the laser head. The powder feeder is provided with a powder feeding tank for containing alloy powder and sintering agent mixed in a certain proportion. The powder feeder is provided with a powder-carrying gas valve and a delivery pipe. The process gas control cabinet controls the flow rate of the powder-carrying gas introduced into the powder-carrying gas valve, and the alloy mixed powder can be transported to the cladding nozzle of the laser head through the delivery pipe. The console has an integrated operation and control system with a touch screen, and parameter input, setting, and program management are all realized through the touch screen. The laser power supply can adopt a semiconductor high-power laser system and is equipped with a corresponding water cooling device. The powder-carrying gas can adopt argon.

[0064] Specifically, the traveling module 100 is located between the two clamping modules 200. After cleaning and drying the conversion tube, the conversion tube can be transported to the clamping module 200, and the conversion tube is clamped by the clamping module 200. Then, the traveling module 100 can drive the laser head to move, and the outer wall of the conversion tube is cladded by the laser head. The laser head can be used to clad a rib multiple times as needed to increase the width of the rib and form the rib by multiple claddings. Adding array fins to the outside of the conversion tube through laser cladding technology is conducive to quickly realizing the manufacture of array fins on the conversion tube. The fins can increase the heat transfer area of the conversion tube, which is conducive to improving the heat exchange efficiency of the conversion tube, and further conducive to increasing the ammonia synthesis production capacity, and does not require increasing the diameter of the conversion furnace.

[0065] Example 1

[0066] As Figures 2-6 shown, in this embodiment, the traveling module 100 includes a bottom plate 110, a traveling seat 120, an adjusting seat 130, a mounting seat 140, and a welding seat 150;

[0067] The walking seat 120 is arranged on the top of the base plate 110, and a plurality of walking wheels 124 are arranged at the bottom of the walking seat 120. The walking wheels 124 can roll along the top surface of the base plate 110. Two guide rails in contact with adjacent walking wheels 124 are fixedly connected to the top surface of the base plate 110, so that the base plate 110 can be fixed to the ground, and the moving direction of the walking seat 120 is limited by the guide rails. A power mechanism capable of driving the walking wheels 124 to rotate is arranged inside the walking seat 120. The walking wheels 124 are driven to rotate by the power mechanism, so that the walking wheels 124 move along the long side of the walking seat 120. The adjusting seat 130 is arranged on the top of the walking seat 120, and the mounting seat 140 is arranged on the top of the adjusting seat 130. The mounting seat 140 is rotatably arranged on the top surface of the adjusting seat 130. The welding seat 150 is fixedly connected to the mounting seat 140, and the laser head is fixedly connected to the end of the welding seat 150.

[0068] In specific implementation, after the clamping module 200 clamps the conversion tube, the power mechanism can be used to drive the walking wheel 124 to rotate, so that the walking wheel 124 rolls on the base plate 110, and then the walking seat 120 moves on the base plate 110. The walking seat 120 can drive the mounting seat 140 to move through the adjustment seat 130, so that the laser head on the welding seat 150 moves along the axial direction of the conversion tube, and the alloy mixed powder is melted onto the conversion tube through the laser head to form ribs on the conversion tube.

[0069] like Figures 2-10 As shown, in this embodiment, the clamping module 200 includes a fixing frame 210, a lifting mechanism 220, two support rods 230, two clamping mechanisms 240, and two telescopic mechanisms 250;

[0070] The lifting mechanism 220 is arranged inside the fixed frame 210, and the fixed frame 210 can be fixed on the ground. The lifting mechanism 220 includes a support frame 221 and a sliding frame 222. The sliding frame 222 is slidably connected inside the support frame 221. The support frame 221 is fixedly connected to the fixed frame 210. A hydraulic rod 223 is fixedly connected inside the support frame 221. The output end of the hydraulic rod 223 is transmission-connected to the inside of the sliding frame 222. Two support rods 230 are both rotatably connected to the top of the sliding frame 222. The support rod 230 is fixedly connected to a plurality of support plates 231. The support plate 231 is provided with a plurality of open grooves 232. A plurality of round balls are rotatably connected inside the support plate 231. Two clamping mechanisms 240 are respectively arranged on both sides of the fixed frame 210. Two telescopic mechanisms 250 are respectively arranged on both sides of the fixed frame 210. The two telescopic mechanisms 250 are located between the two clamping mechanisms 240.

[0071] Two power motors 224 are fixedly connected to the inner side surface of the top of the sliding frame 222, and the output end of the power motor 224 is transmission-connected with a transmission shaft 225. The inner side surface of the sliding frame 222 is rotatably connected with two rotating shafts 226. The transmission shaft 225 and the rotating shaft 226 are both fixedly sleeved with bevel gears 227, and two adjacent bevel gears 227 are meshed for transmission. The sliding frame 222 is rotatably connected with two positioning shafts 228 fixedly connected to adjacent support rods 230, and the rotating shaft 226 is fixedly sleeved with a worm 2261, and the positioning shaft 228 is fixedly sleeved with a worm wheel 2281, which is meshed with the adjacent worm wheel 2281. The worm 2261 and the worm wheel 2281 can limit the rotation of the positioning shaft 228, thereby preventing the support rod 230 from rotating at will.

[0072] In specific implementation, after the conversion tube moves to the top of the support rod 230 and is located between the two clamping mechanisms 240, the clamping mechanism 240 can be moved by the telescopic mechanism 250, so that the two clamping mechanisms 240 move toward each other, and the conversion tube is clamped by the two clamping mechanisms 240. At the same time, the sliding frame 222 can be driven to move upward by the hydraulic rod 223, so that the sliding frame 222 drives the support rod 230 to move upward, so that the round ball on the support plate 231 supports the conversion tube and the conversion tube moves upward. At this time, the middle part of the conversion tube can be supported by the two support rods 230;

[0073] After a fin is welded on the conversion tube, when adjusting the angle of the conversion tube, the power motor 224 can drive the transmission shaft 225 to rotate, and the transmission shaft 225 can drive the rotating shaft 226 to rotate through two bevel gears 227, and the rotating shaft 226 can drive the positioning shaft 228 to rotate through the worm 2261 and the worm wheel 2281, thereby rotating the support rod 230, and the support rod 230 can drive several support plates 231 thereon to rotate, thereby switching the next support plate 231 to support the conversion tube, and the adjacent two support plates 231 will correspond to the welded fins, so that the support plate 231 can smoothly cross the welded fins, and then continue to support the conversion tube through the next support plate 231 on the support rod 230, so that the side wall of the conversion tube can be continuously supported, and the influence of the fins on the support of the conversion tube can be minimized, which is conducive to more stable support of the conversion tube.

[0074] By opening a plurality of open grooves 232 on the support plate 231, the walking module 100 can be stopped at one position, so that the laser head can be melted on the conversion tube and the conversion tube can be continuously rotated. At this time, annular ribs can be formed on the conversion tube, and the melted ribs can correspond to the open grooves 232, so that the annular ribs pass through the inside of the open grooves 232, and the conversion tube is continuously supported by the support plate 231.

[0075] like Figure 7As shown, in this embodiment, the clamping mechanism 240 includes a base 241, a limiting frame 242, a clamping seat 243, a conical seat 244, and a second hydraulic rod 245;

[0076] Several support wheels are provided at the bottom of the base 241. The limiting frame 242 is fixedly connected to the base 241. The clamping seat 243 is slidably connected to the limiting frame 242. The conical seat 244 is rotatably connected to the clamping seat 243. The conical seat 244 is located on the side of the clamping seat 243 close to the fixed frame 210. The second hydraulic rod 245 is fixedly connected inside the limiting frame 242. The output end of the second hydraulic rod 245 is in transmission connection with the inside of the clamping seat 243. A connecting motor 260 is fixedly connected to one clamping seat 243. The output end of the connecting motor 260 is in transmission connection with a limiting shaft 261 rotatably connected to one clamping seat 243. The end of the limiting shaft 261 is fixedly connected to the adjacent conical seat 244;

[0077] The telescopic mechanism 250 includes a connecting seat 251, a sliding seat 252, a driving motor 253, and an adjusting lead screw 254;

[0078] The connecting seat 251 is fixedly connected to the fixed frame 210. The sliding seat 252 is slidably connected inside the connecting seat 251. The end of the sliding seat 252 is fixedly connected to the adjacent limiting frame 242. The driving motor 253 is fixedly connected inside the connecting seat 251. The adjusting lead screw 254 is screwed and connected inside the sliding seat 252. An L-shaped cushion seat is fixedly arranged inside the connecting seat 251. The driving motor 253 is fixedly arranged on the L-shaped cushion seat, and the adjusting lead screw 254 is rotatably arranged on the L-shaped cushion seat. By adjusting the lead screw 254, the position of the sliding seat 252 can be restricted, and thus the position of the limiting frame 242 can be restricted to position the clamping mechanism 240. The output end of the driving motor 253 is in transmission connection with the adjusting lead screw 254.

[0079] In specific implementation, after the conversion tube is moved to the top of the support rod 230, the adjusting screw rod 254 can be driven to rotate by the driving motor 253. When the adjusting screw rod 254 rotates, the sliding seat 252 can move along the inside of the connecting seat 251, and the sliding seat 252 can drive the limit frame 242 to move, so that the supporting wheels at the bottom of the base 241 roll on the ground, so that the two limit frames 242 can move smoothly towards each other, and the limit frame 242 can drive the clamping seat 243 to move, and the clamping seat 243 can drive the conical seat 244 to move, so that the conical seat 244 is inserted into the end of the conversion tube, and the conversion tube is clamped by the two conical seats 244. The conical seat 244 can adapt to the clamping of conversion tubes of different sizes, and then the hydraulic rod 245 can drive The clamping seat 243 moves upward, and the clamping seat 243 can drive the conversion tube to move upward through the conical seat 244, and then lift the conversion tube so that the side wall of the conversion tube corresponds to the laser head, so that the axis of the conversion tube and the laser head are at the same height as much as possible. While the clamping seat 243 lifts the conversion tube, the support rod 230 can be lifted by the lifting mechanism 220, so that the support rod 230 supports the middle part of the conversion tube through the support plate 231. After the laser head melts a fin, the limit shaft 261 can be driven to rotate by connecting the motor 260. The limit shaft 261 can drive a conical seat 244 to rotate. A conical seat 244 can drive the conversion tube to rotate, and then adjust the angle of the conversion tube, and melt fins at different positions of the conversion tube.

[0080] Embodiment 2

[0081] Based on the first embodiment, Figure 5 and Figure 6 As shown, in this embodiment, the mounting seat 140 is fixedly connected with a laser ranging sensor 141 and a laser ranging sensor 2 142, the adjusting seat 130 is fixedly connected with an adjusting motor 131 inside, the output end of the adjusting motor 131 is transmission-connected with a connecting shaft 132 rotatably connected to the adjusting seat 130, the top of the connecting shaft 132 is fixedly connected to the bottom of the mounting seat 140, the laser ranging sensor 141 and the laser ranging sensor 2 142 are respectively located on both sides of the mounting seat 140, and the laser ranging sensor 141 and the welding seat 150 are located on the same side of the mounting seat 140.

[0082] In specific implementation, when the laser head on the welding seat 150 melts the fins on the conversion tube, when the travel seat 120 moves along the bottom plate 110, the mounting seat 140 can drive the laser distance sensor 141 and the laser distance sensor 2 142 to move. At this time, the width of the melted fin can be detected by the laser distance sensor 141 to understand whether the melted fin has a depression or a protrusion. During the initial melting of a fin, if it is detected that the initially melted fin has a depression or a protrusion, when the fin is subsequently melted for the second time to increase the width of the fin, when the laser head moves to the depressed position, the moving speed of the travel seat 120 is reduced according to the degree of the depression, and the conveying speed of the alloy mixed powder is increased, so as to make up for the depressed part as much as possible, and when the laser head moves to the convex position, the moving speed of the travel seat 120 is increased, and the conveying speed of the alloy mixed powder is reduced, so as to reduce the amount of the secondary melted alloy powder in the convex part as much as possible, so as to make the fin as flat as possible;

[0083] After a conversion tube is clad once, after the travel seat 120 moves from one end of the bottom plate 110 to the other end, the adjustment motor 131 can drive the connecting shaft 132 to rotate, and the connecting shaft 132 can drive the mounting seat 140 to rotate, so that the mounting seat 140 drives the welding seat 150 to rotate, and the angles of the welding seat 150, the laser distance sensor 1 141, and the laser distance sensor 2 142 are adjusted, so that the welding seat 150 corresponds to another conversion tube, and then the travel seat 120 can be moved from the other end of the bottom plate 110 to one end to clad the other conversion tube, so that the two conversion tubes are clad in sequence. After the cladding of a fin on a conversion tube is completed, if a defect occurs in the last cladding of a fin, such as a fin needs three claddings to be completely formed, during the third cladding process, if the laser distance sensor 1 141 detects a depression, the travel seat 120 is directly moved in the reverse direction to the depressed position. After the depression is repaired, it continues to move forward and continues to clad the remaining part.

[0084] The laser distance sensor 142 and the welding seat 150 are respectively located on both sides of the mounting seat 140. When the welding seat 150 corresponds to one conversion tube, the laser distance sensor 142 can correspond to another conversion tube. When the traveling seat 120 moves, the laser distance sensor 142 can continuously detect the distance to the other conversion tube. If the other conversion tube is skewed due to the different rising heights of the two clamping seats 243, the data detected by the laser distance sensor 142 will change. In this way, the height of the two clamping seats 243 can be adjusted to make the axis of the other conversion tube as parallel to the horizontal plane as possible. When the welding seat 150 corresponds to another conversion tube, the ribs on one conversion tube can be re-detected by the laser distance sensor 142, which is beneficial to improve the detection effect.

[0085] Optionally, the mounting base 140 can be set in a T shape, the welding base 150, the first laser distance sensor 141, and the second laser distance sensor 142 are all arranged on the horizontal section of the T-shaped mounting base 140, and the welding base 150, the first laser distance sensor 141, and the second laser distance sensor 142 are arranged vertically, so that the laser head corresponds to the top of the conversion tube, and the first laser distance sensor 141 and the second laser distance sensor 142 correspond to the top of the conversion tube, so that the laser head will perform cladding on the top of the side wall of the conversion tube.

[0086] As Figure 6 shown, in this embodiment, the walking base 120 is slidably connected with an adjusting plate 121 fixedly connected to the bottom of the adjusting base 130. The bottom surface of the adjusting plate 121 is fixedly connected with a sliding block 122 slidably connected to the inside of the walking base 120. The sliding block 122 can slide along the top of the walking base 120. An electric telescopic rod 123 is fixedly connected to the inside of the walking base 120, and the output end of the electric telescopic rod 123 is in transmission connection with the sliding block 122.

[0087] During specific implementation, when the secondary cladding of the fin is required after the primary cladding of a fin, the electric telescopic rod 123 can be used to drive the sliding block 122 to move. The sliding block 122 can drive the adjusting plate 121 to move, and the adjusting plate 121 can drive the adjusting base 130 to move, so that the mounting base 140 and the welding base 150 move, and the welding base 150 drives the laser head away from the fin, adjusts the distance between the laser head and the conversion tube, enables the laser head to smoothly perform cladding on the fin, and can adapt to the cladding of conversion tubes of different sizes.

[0088] As Figure 11 With Figure 12 shown, in this embodiment, a guiding plate 300 and a limiting plate 400 are arranged on the top of the fixed frame 210. A connecting plate 500 is arranged at the bottom of the guiding plate 300. The highest point of the connecting plate 500 corresponds to the lowest point of the limiting plate 400. Support frames are fixedly connected to the bottoms of the guiding plate 300 and the connecting plate 500. Two first positioning frames 410 fixedly connected to the fixed frame 210 are arranged at the bottom of the limiting plate 400. A second positioning frame 420 fixedly connected to the bottom surface of the limiting plate 400 is slidably connected to the first positioning frame 410. A hydraulic rod three 430 is fixedly connected to the inside of the first positioning frame 410, and the output end of the hydraulic rod three 430 is in transmission connection with the inner top surface of the second positioning frame 420.

[0089] During specific implementation, the support rod 230 can be lowered to the bottom of the guiding plate 300 and the limiting plate 400 through the lifting mechanism 220. The conversion tube can be moved onto the guiding plate 300, and the conversion tube can roll along the guiding plate 300 to between the guiding plate 300 and the limiting plate 400. Then, the conversion tube can be clamped by the clamping mechanism 240. The conversion tube is lifted by the clamping mechanism 240, and the support rod 230 is lifted by the lifting mechanism 220 so that the support rod 230 supports the middle part of the conversion tube. After fins are welded onto one conversion tube, the conversion tube is lowered again to between the guiding plate 300 and the limiting plate 400. After the conversion tube is released, the positioning frame two 420 can be driven by the hydraulic rod three 430 to slide downward within the positioning frame one 410, causing the limiting plate 400 to move downward. At this time, the conversion tube can slide from the guiding plate 300 onto the limiting plate 400. The guiding plate 300 can block the top of the conversion tube. After the limiting plate 400 gradually aligns with the connecting plate 500 and the conversion tube separates from the edge of the guiding plate 300, the conversion tube can slide from the limiting plate 400 onto the connecting plate 500. The conversion tube can slide between the support frames of the connecting plate 500 and the guiding plate 300. Then, the conversion tube can be taken out. At the same time, the hydraulic rod three 430 causes the positioning frame two 420 to drive the limiting plate 400 to move upward to its original position.

[0090] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0091] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A manufacturing process for a heat exchange reforming furnace tube with array fins, characterized in that The process includes cleaning - feeding and clamping - mixing and powder feeding - welding fins. The specific steps are as follows: Step 1: Cleaning: Use acetone to clean the outer wall of the processed conversion tube to remove impurities on the outer wall of the conversion tube; Step 2: Loading and clamping: transporting the conversion tube to the corresponding clamping module (200), and clamping and positioning the two conversion tubes respectively by two clamping modules (200); Step 3: Mixing and powder feeding: Mix the alloy powder and sintering agent in a certain proportion and load them into the powder feeding tank of the powder feeder, open the powder carrier gas valve of the powder feeder, and transport the alloy mixed powder to the laser head of the laser welding equipment through the powder carrier gas, so that the mixed powder enters the welding nozzle of the laser head; Step 4: welding fins: The laser head of the laser welding equipment is arranged on the walking module (100). According to the position, shape and size information of the array fins to be formed on the conversion tube pre-input into the control console, the walking module (100) drives the laser head to move axially, and the welding nozzle is used to melt and form fins on the outside of the conversion tube. The angle of the conversion tube is adjusted by the clamping module (200) to form array fins on the outside of the conversion tube.

2. The manufacturing process of the heat exchange reforming furnace tube with array fins according to claim 1, characterized in that, The laser head in step 3 and step 4 is equipped with a water cooling system, and the laser head is cooled by the water cooling system.

3. The manufacturing process of the heat exchange reforming furnace tube with array fins according to claim 1, characterized in that, After the outer wall of the conversion tube is cleaned in step one, the conversion tube is first dried using compressed air, and then the conversion tube is transported to the corresponding clamping module (200).

4. The manufacturing process of the heat exchange reforming furnace tube with array fins according to any one of claims 1-3, characterized in that, The walking module (100) comprises: Bottom plate (110); A walking seat (120) is arranged on the top of the bottom plate (110), and a plurality of walking wheels (124) are arranged on the bottom of the walking seat (120); An adjustment seat (130) is arranged on the top of the walking seat (120); A mounting seat (140) disposed on the top of the adjustment seat (130); The welding seat (150) is fixedly connected to the mounting seat (140), and the laser head is fixedly connected to the end of the welding seat (150).

5. The manufacturing process of the heat exchange reforming furnace tube with array fins according to claim 4, characterized in that, The mounting seat (140) is fixedly connected to a first laser distance measuring sensor (141) and a second laser distance measuring sensor (142); the adjusting seat (130) is internally fixedly connected to an adjusting motor (131); the output end of the adjusting motor (131) is drivingly connected to a connecting shaft (132) rotatably connected to the adjusting seat (130); the top end of the connecting shaft (132) is fixedly connected to the bottom of the mounting seat (140).

6. The manufacturing process of the heat exchange reforming furnace tube with array fins according to claim 4, characterized in that, The walking seat (120) is slidably connected to an adjustment plate (121) fixedly connected to the bottom of the adjustment seat (130); the bottom surface of the adjustment plate (121) is fixedly connected to a sliding block (122) slidably connected to the inside of the walking seat (120); the inside of the walking seat (120) is fixedly connected to an electric telescopic rod (123); and the output end of the electric telescopic rod (123) is transmission-connected to the sliding block (122).

7. The manufacturing process of the heat exchange reforming furnace tube with array fins according to claim 4, characterized in that, The clamping module (200) comprises: FixedFrame(210); Lifting mechanism (220), arranged inside the fixed frame (210). The lifting mechanism (220) includes a support frame (221) and a sliding frame (222). The sliding frame (222) is slidably connected inside the support frame (221). The support frame (221) is fixedly connected to the fixed frame (210). A first hydraulic rod (223) is fixedly connected inside the support frame (221), and the output end of the first hydraulic rod (223) is in transmission connection with the inside of the sliding frame (222). Two support rods (230), both rotatably connected to the top of the sliding frame (222). The support rods (230) are fixedly connected with a plurality of support plates (231), and a plurality of opening grooves (232) are formed in the support plates (231). Two clamping mechanisms (240), respectively arranged on both sides of the fixed frame (210). Two telescopic mechanisms (250), respectively arranged on both sides of the fixed frame (210).

8. The manufacturing process of the heat exchange reforming furnace tube with array fins according to claim 7, characterized in that, The clamping mechanism (240) includes: A base (241); A limit frame (242), fixedly connected to the base (241); A clamping seat (243), slidably connected to the limit frame (242); A conical seat (244), rotatably connected to the clamping seat (243); A second hydraulic rod (245), fixedly connected inside the limit frame (242), and the output end of the second hydraulic rod (245) is in transmission connection with the inside of the clamping seat (243).

9. The manufacturing process of the heat exchange reforming furnace tube with array fins according to claim 8, characterized in that, One clamping seat (243) is fixedly connected with a connecting motor (260). The output end of the connecting motor (260) is in transmission connection with a limit shaft (261) rotatably connected to one clamping seat (243), and the end of the limit shaft (261) is fixedly connected to the adjacent conical seat (244).

10. The manufacturing process of the heat exchange reforming furnace tube with array fins according to claim 8, characterized in that, The telescopic mechanism (250) includes: A connecting seat (251), fixedly connected to the fixed frame (210); A sliding seat (252), slidably connected inside the connecting seat (251). The end of the sliding seat (252) is fixedly connected to the adjacent limit frame (242); A driving motor (253), fixedly connected inside the connecting seat (251); An adjusting screw rod (254), screwed and connected inside the sliding seat (252). The output end of the driving motor (253) is in transmission connection with the adjusting screw rod (254).

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