Manufacturing process of heat exchange reformer tube with array fins

Abstract

The present invention relates to the field of furnace tube manufacturing technology, and specifically to a manufacturing process for a heat exchange type reformer tube with array fins, characterized in that it includes the process steps of cleaning - loading and clamping - mixing and powder feeding - fin welding. In the present invention, a walking module drives a laser head to move along the axial direction of the reformer tube, and a laser is used to melt the alloy mixed powder on the outer wall of the reformer tube, thereby forming fins by welding on the outer wall of the reformer tube. The array fins are added to the outside of the reformer tube by laser welding technology, which is conducive to the rapid realization of the array fin manufacturing on the reformer tube. The fins can increase the heat transfer area of ​​the reformer tube, which is conducive to improving the heat exchange efficiency of the reformer tube, and further conducive to increasing the production capacity of synthetic ammonia. A plurality of support plates are fixedly connected by support rods, and the middle part of the reformer tube can be supported by the support plates on the support rods. The support plates cross the welded fins, so that the side walls of the reformer tube can be continuously supported.

Description

Technical Field

[0001] The invention relates to the technical field of furnace tube manufacturing, in particular to a manufacturing process of a heat exchange reforming furnace tube with array fins. Background Art

[0002] In a synthetic ammonia heat exchange reformer, the high-temperature secondary reformed gas flows upward through the annular gap between the reforming tubes and the outer casing, exchanging heat with the reforming tubes. The gas temperature gradually decreases from 1000°C at the inlet to 500°C at the outlet. Due to the relatively low outlet temperature, heat transfer in the outlet region is mainly by convection. Compared with the radiation and convection heat transfer of the high-temperature gas in the inlet region, the heat transfer efficiency in the outlet region is relatively low. Therefore, as the temperature gradually decreases, approximately 1 / 3 to 1 / 2 of the length of the reforming tubes does not receive sufficient heat exchange. In addition, a synthetic ammonia heat exchange reformer with an annual output of 200,000 tons is usually equipped with 204 reforming tubes, and the size of the heat exchange reformer is also relatively large. When it is necessary to improve the synthetic ammonia production efficiency, if the synthetic ammonia output is increased only by increasing the number of reforming tubes, the diameter of the heat exchange reformer will also increase accordingly. This brings certain difficulties to the design of the shell and large flange of the heat exchange reformer. Summary of the Invention

[0003] The object of the present invention is to provide a process for manufacturing a heat exchange reformer tube with array fins to solve the problems raised in the above background technology.

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

[0005] A manufacturing process for a heat exchange reformer tube with array fins, characterized by comprising the following process steps: cleaning - material loading and clamping - material mixing and powder feeding - fin welding. The specific steps are as follows:

[0006] 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;

[0007] Step 2: Loading and clamping: transport the conversion tube to the corresponding clamping module, and clamp and position the two conversion tubes respectively through the two clamping modules;

[0008] Step 3: Mixing and feeding powder: 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 use the powder carrier gas to transport the alloy mixed powder to the laser head of the laser welding equipment, 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-entered in the control console, the walking module 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 to form array fins on the outside of the conversion tube.

[0010] Furthermore, 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.

[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 base plate, and a plurality of walking wheels are arranged at the bottom of the walking seat. The walking wheels can roll along the top surface of the base plate. The top surface of the base plate is fixedly connected to two guide rails in contact with adjacent walking wheels. 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 to a laser ranging sensor 1 and a laser ranging sensor 2, an adjusting motor is fixedly connected inside the adjusting seat, an output end of the adjusting motor is transmission-connected to a connecting shaft rotatably connected to the adjusting seat, a 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 includes 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, and the lifting mechanism includes a support frame and a sliding frame. The sliding frame is slidably connected inside the support frame, and the support frame is fixedly connected to the fixed frame. A hydraulic rod 1 is fixedly connected inside the support frame, and the output end of the hydraulic rod 1 is transmission-connected to the inside of the sliding frame;

[0021] The two support rods are both rotatably connected to the top of the sliding frame, and the support rods are fixedly connected to a plurality of support plates, the support plates are provided with a plurality of open slots, and a plurality of round balls are rotatably connected inside the support plates;

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

[0023] The 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] Two power motors are fixedly connected to the inner side surface of the top of the sliding frame, and the output end of the power motor is transmission-connected with a transmission shaft. The inner side surface of the sliding frame is rotatably connected to two rotating shafts. The transmission shaft and the rotating shaft are fixedly sleeved with bevel gears, and two adjacent bevel gears are meshed for transmission. The sliding frame is rotatably connected to two positioning shafts fixedly connected to adjacent support rods, and the rotating shaft is fixedly sleeved with a worm, and the positioning shaft is fixedly sleeved with a worm wheel, and the worm is meshed with adjacent worm wheels.

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

[0026] A number of supporting wheels are provided 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 limit frame;

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

[0030] The second hydraulic rod is fixedly connected to the interior of the limit frame, and the output end of the second hydraulic rod is transmission-connected to the interior of the clamping seat.

[0031] Furthermore, a clamping seat is fixedly connected to a connecting motor, an output end of the connecting motor is transmission-connected to a limiting shaft rotatably connected to a clamping seat, and an end of the limiting shaft is fixedly connected to an adjacent conical seat.

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

[0033] The connecting seat is fixedly connected to the fixing 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 is screwed and connected inside the sliding seat, and the output end of the driving motor is transmission-connected to the adjusting screw;

[0037] A guide plate and a limit plate are provided on the top of the fixed frame, a connecting plate is provided at the bottom of the guide plate, and the bottoms of the guide plate and the connecting plate are fixedly connected to a support frame, and two positioning frames 1 fixedly connected to the fixed frame are provided at the bottom of the limit plate, and the positioning frame 1 is slidably connected to the positioning frame 2 fixedly connected to the bottom surface of the limit plate, and a hydraulic rod 3 is fixedly connected inside the positioning frame 1, and the output end of the hydraulic rod 3 is transmission-connected to the inner top surface of the positioning frame 2.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The travel module drives the laser head to move along the axial direction of the converter tube. The powder feeder can deliver the alloy mixed powder to the laser head. The laser melts the alloy mixed powder on the outer wall of the converter tube, thereby forming fins by cladding on the outer wall of the converter tube. The laser cladding technology is used to install array fins on the outside of the converter tube, which is conducive to the rapid manufacture of array fins on the converter tube. The fins can increase the heat transfer area of ​​the converter tube, which is conducive to improving the heat exchange efficiency of the converter tube, and thus is conducive to increasing the synthetic ammonia production capacity without increasing the diameter of the converter furnace.

[0040] 2. Several support plates are fixedly connected by support rods. After the two clamping mechanisms clamp the conversion tube, the support rod can be raised by the lifting mechanism, and the middle part of the conversion tube can be supported by the support plates on the support rods. After a fin is melted, when the angle of the conversion tube is adjusted, the support rod can drive the support plate to rotate so that the support plate crosses the melted fin, and then the conversion tube is continued to be supported by the next support plate on the support rod. 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 conducive to more stable support of the conversion tube.

[0041] 3. A laser distance sensor is fixedly connected to the mounting base. When the walking module drives the laser head to move axially, the laser distance sensor can detect the deposited fins to find out whether there is a certain depression. If there is a depression, when the fins are subsequently subjected to secondary deposition, 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 that more alloy mixed powder can be deposited in the depressed area to fill the depressed area as much as possible, which is conducive to ensuring the deposition quality of the fins and making the fin width meet the production requirements as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

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

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

[0049] Figure 8 yes Figure 7 A magnified view of point A;

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

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

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

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

[0054] In the figure: 100, walking module; 110, bottom plate; 120, walking seat; 121, adjustment plate; 122, sliding block; 123, electric telescopic rod; 124, walking wheel; 130, adjustment seat; 131, adjustment motor; 132, connecting shaft; 140, mounting seat; 141, laser distance sensor 1; 142, laser distance sensor 2; 150, welding seat; 200, clamping module; 210, fixed frame; 220, lifting mechanism; 221, support frame; 222, sliding frame; 223, hydraulic rod 1; 224, power motor; 225, transmission shaft; 226, rotating shaft; 2261, worm Rod; 227, bevel gear; 228, positioning shaft; 2281, worm gear; 230, support rod; 231, support plate; 232, opening slot; 240, clamping mechanism; 241, base; 242, limit frame; 243, clamping seat; 244, conical seat; 245, hydraulic rod two; 250, telescopic mechanism; 251, connecting seat; 252, sliding seat; 253, driving motor; 254, adjusting screw; 260, connecting motor; 261, limiting shaft; 300, guide plate; 400, limiting plate; 410, positioning frame one; 420, positioning frame two; 430, hydraulic rod three; 500, connecting plate. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0056] See also Figure 1-Figure 5 In an embodiment of the present invention, a manufacturing process for a heat exchange reformer tube with array fins is characterized by comprising the following process steps: cleaning - loading and clamping - mixing and powder feeding - fin welding. The specific steps are as follows:

[0057] 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;

[0058] Step 2: Loading and clamping: transport the conversion tube to the corresponding clamping module 200, and clamp and position the two conversion tubes respectively through the two clamping modules 200;

[0059] Step 3: Mixing and feeding powder: 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 use the powder carrier gas to transport the alloy mixed powder to the laser head of the laser welding equipment, so that the mixed powder enters the welding nozzle of the laser head.

[0060] Step 4: Fin welding: The laser head of the laser welding equipment is mounted on the travel module 100. Based on the position, shape, and size information of the array fins to be formed on the converter tube pre-entered into the console, the travel module 100 drives the laser head to move axially. The welding nozzle is used to weld the fins on the outside of the converter tube. The angle of the converter tube is adjusted by the clamping module 200 to form the array fins on the outside of the converter tube.

[0061] After cleaning the outer wall of the conversion tube in step one, the conversion tube is first dried with compressed air, and then the conversion tube is transported to the corresponding clamping module 200. The laser head in steps three and four is equipped with a water cooling system, which cools the laser head through the water cooling system.

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

[0063] The laser head is arranged on the walking module 100, the laser power supply is connected to the laser head, the powder feeder is provided with a powder feeding tank, the powder feeding tank is used to hold alloy powder and sintering agent mixed in a certain proportion, the powder feeder is provided with a powder carrier gas valve and a conveying pipe, the process gas control cabinet controls the powder carrier gas flow entering the powder carrier gas valve, and the alloy mixed powder can be conveyed to the welding nozzle of the laser head through the conveying pipe. The console has an integrated operation and control system with a touch screen. 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 be equipped with a corresponding water cooling device. The powder carrier gas can adopt argon.

[0064] Specifically, the walking module 100 is located between the two clamping modules 200. After the conversion tube is cleaned and dried, the conversion tube can be transported to the clamping module 200, and the conversion tube can be clamped by the clamping module 200. Then the walking module 100 can drive the laser head to move, and the outer wall of the conversion tube can be melt-clad by the laser head. The laser head can be made to melt a fin multiple times as needed to increase the width of the fin and form the fin multiple times. The array fins are added to the outside of the conversion tube through laser cladding technology, which is conducive to the rapid manufacture of the 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 thus is conducive to increasing the synthetic ammonia production capacity without increasing the diameter of the conversion furnace.

[0065] Example 1

[0066] like Figure 2-Figure 6 As shown, in this embodiment, the walking module 100 includes a base plate 110, a walking seat 120, an adjustment 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. The top surface of the base plate 110 is fixedly connected to two guide rails in contact with adjacent walking wheels 124, 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 that can drive the walking wheels 124 to rotate is arranged inside the walking seat 120. The power mechanism drives the walking wheels 124 to rotate, 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] During 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 Figure 2-Figure 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 can fix the fixed frame 210 on the ground. The lifting mechanism 220 includes a support frame 221 and a sliding frame 222. The sliding frame 222 is slidably connected to the inside of the support frame 221. The support frame 221 is fixedly connected to the fixed frame 210. A hydraulic rod 223 is fixedly connected to the inside of 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 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 has a plurality of open slots 232. A plurality of round balls are rotatably connected to the inside of 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 to two rotating shafts 226. The transmission shaft 225 and the rotating shaft 226 are fixedly sleeved with a bevel gear 227, and the two adjacent bevel gears 227 are engaged for transmission. The sliding frame 222 is rotatably connected to two positioning shafts 228 fixedly connected to the adjacent support rods 230, and the rotating shaft 226 is fixedly sleeved with a worm 2261. The positioning shaft 228 is fixedly sleeved with a worm wheel 2281, and the worm 2261 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 a 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, thereby causing the two clamping mechanisms 240 to move toward each other, and the conversion tube can be clamped by the two clamping mechanisms 240. At the same time, the sliding frame 222 can be driven upward by the hydraulic rod 223, so that the sliding frame 222 drives the support rod 230 to move upward, thereby causing the balls on the support plate 231 to support the conversion tube and cause the conversion tube to move 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 the angle of the conversion tube is adjusted, 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 the two bevel gears 227, and the rotating shaft 226 can drive the positioning shaft 228 to rotate through the worm 2261 and the worm gear 2281, thereby rotating the support rod 230, and the support rod 230 can drive the 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 fin, so that the support plate 231 can smoothly cross the welded fin, 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 fin 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 slots 232 on the support plate 231, the walking module 100 can be stopped in 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 slots 232, so that the annular ribs pass through the inside of the open slots 232 and continuously support the conversion tube through 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 hydraulic rod 245;

[0076] A plurality of supporting wheels are provided at the bottom of the base 241, the limit frame 242 is fixedly connected to the base 241, the clamping seat 243 is slidably connected to the limit frame 242, the conical seat 244 is rotatably connected to the clamping seat 243, and 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 to the inside of the limit frame 242, and the output end of the second hydraulic rod 245 is transmission-connected to the inside of the clamping seat 243. One clamping seat 243 is fixedly connected to a connecting motor 260, and the output end of the connecting motor 260 is transmission-connected to a limiting shaft 261 rotatably connected to one clamping seat 243, and 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 screw rod 254;

[0078] The connecting seat 251 is fixedly connected to the fixed frame 210, the sliding seat 252 is slidably connected to the inside of the connecting seat 251, the end of the sliding seat 252 is fixedly connected to the adjacent limit frame 242, the driving motor 253 is fixedly connected to the inside of the connecting seat 251, the adjusting screw 254 is screwed and connected to the inside of the sliding seat 252, an L-shaped pad is fixedly provided inside the connecting seat 251, the driving motor 253 is fixedly provided on the L-shaped pad, and the adjusting screw 254 is rotatably provided on the L-shaped pad, the position of the sliding seat 252 can be limited by adjusting the screw 254, and then the position of the limit frame 242 can be limited, and the clamping mechanism 240 is positioned, and the output end of the driving motor 253 is transmission-connected to the adjusting screw 254.

[0079] In a specific implementation, after the conversion tube is moved to the top of the support rod 230, the adjusting screw 254 can be driven to rotate by the driving motor 253. When the adjusting screw 254 rotates, the sliding seat 252 can move along the inside of the connecting seat 251. 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, thereby making the two limit frames 242 move smoothly toward each other. 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 be driven. 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 move 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] Example 2

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

[0082] During specific implementation, when the laser head on the welding seat 150 melts the fins on the conversion tube, and when the traveling 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 traveling 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. When the laser head moves to the convex position, the moving speed of the traveling 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 on the protruding part as much as possible, so that the fin is as flat as possible.

[0083] After a conversion tube is welded once, the travel base 120 moves from one end of the base plate 110 to the other end, and the adjustment motor 131 drives the connecting shaft 132 to rotate, and the connecting shaft 132 drives the mounting base 140 to rotate, so that the mounting base 140 drives the welding base 150 to rotate, and adjusts the angles of the welding base 150, the laser distance sensor 1 141, and the laser distance sensor 2 142 so that the welding base 150 corresponds to another conversion tube. Then, the travel base 120 can be moved from the other end of the base plate 110 to one end to weld the other conversion tube, thereby welding the two conversion tubes in sequence. After the welding of a fin on a conversion tube is completed, if a defect occurs in the last welding of a fin, such as a fin requiring three weldings to be fully formed, during the third welding process, if the laser distance sensor 1 141 detects a dent, the travel base 120 is directly moved in the opposite direction to the dent. After the dent is repaired, it continues to move forward to continue welding the remaining parts.

[0084] The second laser distance measuring 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 second laser distance measuring sensor 142 can correspond to the other conversion tube. When the traveling seat 120 moves, the second laser distance measuring 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 second laser distance measuring sensor 142 will change. In this way, the heights of the two clamping seats 243 can be adjusted so that the axis of the other conversion tube is as parallel to the horizontal plane as possible. When the welding seat 150 corresponds to the other conversion tube, the second laser distance measuring sensor 142 can be used to re-detect the ribs on one conversion tube, which is beneficial to improve the detection effect.

[0085] The mounting seat 140 can be optionally set into a T shape, and the welding seat 150, laser ranging sensor 1 141, and laser ranging sensor 2 142 are all set in the horizontal section of the T-shaped mounting seat 140, and the welding seat 150, laser ranging sensor 1 141, and laser ranging sensor 2 142 are set vertically, so that the laser head corresponds to the top of the conversion tube, and the laser ranging sensor 1 141 and the laser ranging sensor 2 142 correspond to the top of the conversion tube, so that the laser head will melt the top of the side wall of the conversion tube.

[0086] like Figure 6 As shown, in this embodiment, the walking seat 120 is slidably connected to an adjustment plate 121 fixedly connected to the bottom of the adjustment seat 130, and 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 sliding block 122 can slide along the top of the walking seat 120, and an electric telescopic rod 123 is fixedly connected to the inside of the walking seat 120, and the output end of the electric telescopic rod 123 is transmission-connected to the sliding block 122.

[0087] During specific implementation, after the initial welding of a fin, when the fin needs to be welded for the second time, the sliding block 122 can be driven to move by the electric telescopic rod 123, and the sliding block 122 can drive the adjustment plate 121 to move, and the adjustment plate 121 can drive the adjustment seat 130 to move, thereby moving the mounting seat 140 and the welding seat 150, so that the welding seat 150 drives the laser head away from the fin, adjusts the distance between the laser head and the conversion tube, and enables the laser head to weld the fin smoothly, and can adapt to the welding of conversion tubes of different sizes.

[0088] like Figure 11 and Figure 12 As shown, in this embodiment, a guide plate 300 and a limit plate 400 are provided on the top of the fixed frame 210, and a connecting plate 500 is provided at the bottom of the guide plate 300. The highest point of the connecting plate 500 corresponds to the lowest point of the limit plate 400. The bottoms of the guide plate 300 and the connecting plate 500 are fixedly connected to a support frame. The bottom of the limit plate 400 is provided with two positioning frames 410 fixedly connected to the fixed frame 210. The positioning frame 1 410 is slidably connected to the positioning frame 2 420 fixedly connected to the bottom surface of the limit plate 400. The interior of the positioning frame 1 410 is fixedly connected to a hydraulic rod 3 430, and the output end of the hydraulic rod 3 430 is transmission-connected to the inner top surface of the positioning frame 2 420.

[0089] In specific implementation, the support rod 230 can be lowered to the bottom of the guide plate 300 and the limit plate 400 by the lifting mechanism 220, and the conversion tube can be moved onto the guide plate 300. The conversion tube can roll along the guide plate 300 to between the guide plate 300 and the limit plate 400, and then the conversion tube can be clamped by the clamping mechanism 240, and the conversion tube can be lifted by the clamping mechanism 240, and 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. After the fins are welded on a conversion tube, the conversion tube is lowered back between the guide plate 300 and the limit plate 400, and after the conversion tube is released, the hydraulic rod The third 430 drives the second positioning frame 420 to slide downward in the first positioning frame 410, so that the limit plate 400 moves downward. At this time, the conversion tube can slide from the guide plate 300 to the limit plate 400. The guide plate 300 can block the top of the conversion tube. After the limit plate 400 is gradually aligned with the connecting plate 500 and the edge of the conversion tube is separated from the guide plate 300, the conversion tube can slide from the limit plate 400 to the connecting plate 500. The conversion tube can slide between the supporting frame of the connecting plate 500 and the guide plate 300, and then the conversion tube can be taken out. At the same time, the hydraulic rod three 430 is used to make the second positioning frame 420 drive the limit plate 400 to move upward to its original position.

[0090] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

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

Claims

1. A process for manufacturing a heat exchange reformer tube with array fins, characterized in that: The process includes cleaning - loading 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 the two clamping modules (200); Step 3: Mixing and feeding powder: 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 use the powder carrier gas to transport the alloy mixed powder to the laser head of the laser welding equipment, so that the mixed powder enters the welding nozzle of the laser head. Step 4: fin welding: The laser head of the laser welding equipment is arranged 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 control console, the traveling module (100) drives the laser head to move axially, and the welding nozzle is used to form fins on the outside of the conversion tube. The angle of the conversion tube is adjusted by the clamping module (200) to form the array fins on the outside of the conversion tube. The walking module (100) includes: bottom plate (110); A walking seat (120) is provided on the top of the base plate (110), and a plurality of walking wheels (124) are provided on the bottom of the walking seat (120); An adjusting seat (130) is arranged on top of the traveling seat (120); A mounting seat (140) is provided on 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); The clamping module (200) comprises: fixedframe(210); A lifting mechanism (220) is 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 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 rotatably connected to the top of the sliding frame (222), and the support rods (230) are fixedly connected to a plurality of support plates (231), and the support plates (231) are provided with a plurality of opening slots (232); Two clamping mechanisms (240) are respectively arranged on both sides of the fixed frame (210); The two telescopic mechanisms (250) are respectively arranged on both sides of the fixed frame (210).

2. The manufacturing process of the heat exchange reformer 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 reformer tube with array fins according to claim 1, characterized in that: After cleaning the outer wall of the conversion tube in step 1, 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 reformer tube with array fins according to claim 1, 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 fixedly connected to an adjusting motor (131); the output end of the adjusting motor (131) is transmission-connected to a connecting shaft (132) rotatably connected to the adjusting seat (130); and the top end of the connecting shaft (132) is fixedly connected to the bottom of the mounting seat (140).

5. The manufacturing process of the heat exchange reformer tube with array fins according to claim 1, characterized in that: The walking seat (120) is slidably connected to an adjusting plate (121) fixedly connected to the bottom of the adjusting seat (130); the bottom surface of the adjusting 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).

6. The manufacturing process of the heat exchange reformer tube with array fins according to claim 1, characterized in that: The clamping mechanism (240) comprises: Base (241); A limit frame (242) is fixedly connected to the base (241); A clamping seat (243) is slidably connected to the limiting frame (242); A conical seat (244) is rotatably connected to the clamping seat (243); The hydraulic rod 2 (245) is fixedly connected to the interior of the limit frame (242), and the output end of the hydraulic rod 2 (245) is transmission-connected to the interior of the clamping seat (243).

7. The manufacturing process of the heat exchange reformer tube with array fins according to claim 6, characterized in that: A clamping seat (243) is fixedly connected to a connecting motor (260), an output end of the connecting motor (260) is drivingly connected to a limiting shaft (261) rotatably connected to a clamping seat (243), and an end of the limiting shaft (261) is fixedly connected to an adjacent conical seat (244).

8. The manufacturing process of the heat exchange reformer tube with array fins according to claim 6, characterized in that: The telescopic mechanism (250) comprises: A connecting seat (251) is fixedly connected to the fixing frame (210); A sliding seat (252) is slidably connected to the interior of the connecting seat (251), and an end of the sliding seat (252) is fixedly connected to the adjacent limiting frame (242); A driving motor (253) is fixedly connected to the interior of the connecting seat (251); The adjusting screw rod (254) is screwed and connected inside the sliding seat (252), and the output end of the driving motor (253) is transmission-connected to the adjusting screw rod (254).

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