Welding equipment and method for shell of flue gas heat exchanger

Abstract

The invention belongs to the technical field of heat exchanger welding, particularly relates to welding equipment and method for a shell of a flue gas heat exchanger, and aims to solve the problems that the time of single-time welding is difficult to grasp effectively, the welding time is too long or insufficient in the welding process, so that the shell is welded through or the welding is not firm enough, the welding quality is poor, and the welding cost is low. According to the scheme, the welding device comprises a bottom plate base and a mounting support, a welding base and a rubber block base are fixedly connected to the top of the bottom plate base, the mounting support is located on one side of the welding base, and a welding module is arranged at the top of the mounting support. The welding equipment and method for the shell of the flue gas heat exchanger have the effect of improving the welding quality, and during welding, the device can limit the welding time after the welding head body makes contact with the welding shell, so that the time of single-time welding is fixed, and the welding efficiency is improved. And the situation that the welding time is too long or insufficient is avoided, and the using effect of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchanger welding, and in particular to a welding device and method for a smoke heat exchanger shell. Background Art

[0002] Heat exchanger is a device that transfers part of the heat of hot fluid to cold fluid, also known as heat exchanger. Heat exchanger plays an important role in chemical, petroleum, power, food and many other industrial production. In chemical production, heat exchanger can be used as heater, cooler, condenser, evaporator and reboiler, etc., and is widely used.

[0003] Heat exchangers suitable for different media, different working conditions, different temperatures, and different pressures have different structural types. The specific classifications of heat exchangers are: 1. Partition heat exchanger; 2. Heat storage heat exchanger; 3. Fluid-connected indirect heat exchanger; 4. Direct contact heat exchanger; 5. Compound heat exchanger.

[0004] Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure.

[0005] The existing flue gas heat exchangers mostly use manual welding when welding the outer shell, and the welding automation effect is not good. In addition, when welding, it is difficult for workers to effectively grasp the time of a single welding. During the welding process, the welding time may be too long or insufficient, resulting in the shell being welded through or the welding being not firm enough, and the welding quality is poor. Summary of the invention

[0006] The present invention discloses a welding device and method for a flue gas heat exchanger shell, aiming to solve the technical problems that the existing flue gas heat exchangers in the background technology mostly adopt manual welding when welding the outer shell, the welding automation effect is not good, and when welding, the workers are difficult to effectively grasp the time of a single welding, and the welding time may be too long or insufficient during the welding process, resulting in the shell being welded through or the welding being not firm enough, and the welding quality is poor.

[0007] The present invention proposes a welding device for a flue gas heat exchanger shell, comprising a base plate seat and a mounting bracket, wherein a welding base and a rubber block base are fixedly connected to the top of the base plate seat, the mounting bracket is located on one side of the welding base, and a welding module is arranged on the top of the mounting bracket, an outer wall on one side of the welding base is fixedly connected to a fixing bracket, inner walls on both sides of the fixing bracket are provided with adjustable telescopic rods, and output ends of the two adjustable telescopic rods are provided with shell fixing modules, an outer wall on one side of the fixing bracket is fixedly connected to a driving motor, and the output shaft of the driving motor is connected to one end of one of the adjusting telescopic rods through a coupling, an outer wall on one side of the welding base is provided with a mounting slot, and a welding adjustment module is arranged inside the mounting slot, and the welding adjustment module is located below the welding module.

[0008] By providing a rubber block seat, a mounting bracket, a welding module, a fixing bracket, an adjustable telescopic rod, a driving motor, a shell fixing module, a welding seat, a mounting slot and a welding adjustment module, the rubber block seat and the driving motor are used in conjunction with the shell fixing module when in use, and the shell fixing module is used to fix the shell body when in use, and the shell fixing module is convenient for disassembly and replacement of the shell body after the welding operation, and is convenient to use; the welding module can limit the time of a single welding when in use, so as to avoid the situation that the shell is welded through or the welding is not firm enough during welding, and can increase the shell welding quality when in use to meet the welding requirements; the welding adjustment module can rotate the shell body or adjust the height of the welding head body according to the needs when in use to adjust the welding position, and can further adjust the position of the shell body in conjunction with the adjusting telescopic rod, thereby meeting the multi-degree-of-freedom welding requirements.

[0009] The cam is connected to the top of the mounting bracket by the guide openings on both sides of the mounting bracket, and the inner walls of the two guide openings are movably connected to the same guide plate, the outer wall of the guide plate is fixedly connected to a fixed plate seat, the top of the fixed plate seat is fixedly connected to a guide rail seat, the outer wall of the guide rail seat is movably connected to a movable block seat, the inner wall of the movable block seat is provided with a welding head body, and the inner walls of the two sides of the fixed plate seat are fixedly connected to the same fixing frame, the inner wall of the fixing frame facing the guide rail seat is fixedly connected to a telescopic spring, and one end of the telescopic spring is fixedly connected to the outer wall of one side of the movable block seat; the outer wall of one side of the mounting frame is provided with two mounting openings, the inner walls of the two mounting openings are movably connected to the same mounting ring frame, the inner wall of the mounting ring frame is fixedly connected to a welding motor, the output shaft of the welding motor is connected to a gear part through a coupling, the outer wall of the gear part is movably connected to a mounting part, the bottom of the mounting part is fixedly connected to two spring rod members, and the bottom ends of the two spring rod members are fixedly connected The outer wall of the fixing plate is fixedly connected to the bottom inner wall of the fixing plate, and a guide member is provided on the fixing plate, the bottom of the fixing plate is fixedly connected to a connecting cable, the connecting cable is located inside the guide member, and the bottom of the fixing plate is fixedly connected to two gear plates, and the two gear plates are meshed with the gear members; the inner walls of the two sides of the fixing plate seat are movably connected to the same mounting rod, and the outer wall of the fixing rod is fixedly connected to a welding top member, one end of the connecting cable is fixedly connected to an outer wall of one side of the welding top member, and the outer wall of the mounting rod is provided with two torsion spring members, one end of the two torsion spring members are respectively fixedly connected to the inner walls of the two sides of the fixing plate seat, and the other ends of the two torsion spring members are respectively fixedly connected to the outer walls of the two sides of the welding top member, the inner walls of the two sides of the fixing frame are movably connected to the same mounting shaft rod, the outer wall of the mounting shaft rod is fixedly connected to a guide wheel, the outer wall of the connecting cable contacts the inner wall of the guide wheel, and the inner walls of the two sides of the fixing frame are fixedly connected to the same fixing plate, and the outer wall of one side of the fixing plate is fixedly connected to a reset spring, and one end of the reset spring is fixedly connected to an outer wall of one side of the fixing frame.

[0010] By providing a welding module, the welding module can limit the contact welding time between the welding head body and the shell body when in use. After the welding reaches a certain time, the welding head body can retract and separate from the shell body, thereby avoiding the shell body being welded through due to excessive welding time during use. When welding, the welding module can make the welding head body contact with the shell body for a certain period of time, thereby avoiding the situation of loose welding due to insufficient welding time, thereby increasing the use effect of the device, improving the welding quality of the device during welding, and eliminating the need for manual welding by the staff during use, with good automation effect and reduced work intensity of the staff.

[0011] In a preferred embodiment, the shell fixing module includes a fixed plate frame, the fixed plate frame is fixedly connected to the output ends of the two adjustable telescopic rods, two limit rods and two limit plates are fixedly connected to the fixed plate frame, the outer walls of the two limit plates are movably connected with the same fixed splint, the top of the fixed plate frame is fixedly connected with a hydraulic rod, the output end of the hydraulic rod is fixedly connected to the top of the fixed splint, and the outer walls of the two limit rods are movably connected with the same movable frame, the fixed plate frame is fixedly connected with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected to the bottom of the movable frame; two electric push rods are fixedly connected to the movable frame, and the output ends of the two electric push rods are fixedly connected to the same fixed bin, the outer walls of both sides of the fixed bin are fixedly connected with supporting side plates, and one side outer wall of the fixed bin is provided with multiple A suction cup part, and the inner wall of the movable frame is fixedly connected with a negative pressure pump, the input end of the negative pressure pump is fixedly connected with a connecting ball, the outer wall of the connecting ball is fixedly connected with three connecting tubes, the input end of one connecting tube is connected with the interior of the fixed bin; the fixed plate frame and the fixed splint are movably connected with fixed seats, the input ends of the other two connecting tubes are fixedly connected with annular tubes, the two annular tubes are respectively located inside the two fixed seats, the outer walls of the two annular tubes are fixedly connected with a plurality of fixed suction cups, the inner walls of the opposite sides of the two fixed seats are provided with a plurality of circular holes, the plurality of fixed suction cups are respectively located inside the plurality of circular holes, and the outer walls of the two connecting tubes are provided with control valves, the interior of the two fixed seats is provided with the same shell body, and the outer walls of the plurality of suction cup parts are in contact with the outer wall of one side of the shell body.

[0012] By providing a shell fixing module, the shell fixing module can fix multiple parts of the shell body separately when in use, and can preliminarily clamp and dock the shell parts after fixation, so as to facilitate welding operations during use and improve the use effect of the device. When in use, the shell fixing module is adsorbed and fixed by negative pressure, and the disassembly and replacement operations after welding are more convenient and quick, which further increases the use effect of the device, is convenient for staff to operate, and is more practical.

[0013] The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention, and the transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention. The transmission gear of the present invention is fixedly connected with the transmission gear of the present invention.

[0014] By providing a welding adjustment module and an adjusting telescopic rod, the welding adjustment module can rotate the shell body according to the welding process when in use, and can also cooperate with the adjusting telescopic rod to move the shell body in parallel during welding, so that the welding head body can perform welding operations on different surfaces and different positions of the shell body, and during adjustment, the welding adjustment module can adjust the height of the welding head body to further increase the welding position, increase the welding freedom of the device when in use, and improve the use effect of the device, and when adjusting, the device can lock the adjusted position and height to avoid position deviation, thereby further increasing the use effect of the device.

[0015] A method for welding a flue gas heat exchanger shell, using the above-mentioned welding device for a flue gas heat exchanger shell, comprises the following steps:

[0016] Step 1: Place the heat exchanger shell body on the fixing seat and the supporting side plate, start the shell fixing module to fix the shell body, and after fixing, start the drive motor to drive the shell body to move above the welding seat;

[0017] Step 2: After moving to the top of the welding seat, start the welding module, and drive the welding head body to perform welding operations through the welding module;

[0018] Step 3: During welding, the welding adjustment module is activated and the telescopic rod is adjusted to adjust the shell body or the height of the welding head body as needed until the welding is completed, and the staff collects the shell body.

[0019] From the above, it can be seen that the welding equipment for the flue gas heat exchanger shell provided by the present invention has the function of improving the welding quality. When welding, the device can limit the welding time after the welding head body contacts the welding shell, so that the time of a single welding is fixed, avoiding the situation of too long welding time or insufficient welding time, and improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a welding device for a flue gas heat exchanger shell proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the internal cross-sectional structure of a welding seat of a welding device for a flue gas heat exchanger shell proposed by the present invention;

[0022] Figure 3 A schematic diagram of the structure of a welding module of a welding device for a flue gas heat exchanger shell proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the internal cross-sectional structure of a mounting frame of a welding device for a flue gas heat exchanger shell proposed by the present invention;

[0024] Figure 5 A schematic diagram of the combined structure of a fixed plate seat and a guide rail seat of a welding device for a flue gas heat exchanger shell proposed by the present invention;

[0025] Figure 6 A schematic diagram of the disassembly of a welding module part of a welding device for a flue gas heat exchanger shell provided by the present invention;

[0026] Figure 7 A schematic diagram of the combined structure of a shell body and a fixing bracket of a welding device for a flue gas heat exchanger shell proposed by the present invention;

[0027] Figure 8 A schematic diagram of the structure of a shell fixing module of a welding device for a flue gas heat exchanger shell proposed by the present invention;

[0028] Fig. 9 A schematic diagram of the structure of a shell fixing module of a welding device for a flue gas heat exchanger shell proposed by the present invention;

[0029] Fig.10 This is a structural schematic diagram of a welding adjustment module of a welding device for a flue gas heat exchanger shell proposed by the present invention.

[0030] In the figure: 1, bottom plate seat; 2, welding seat; 3, welding module; 301, mounting frame; 302, guide port; 303, guide plate; 304, welding head body; 305, mounting port; 306, return spring; 307, fixing plate; 308, welding motor; 309, mounting shaft; 310, fixing frame; 311, fixing plate seat; 312, gear plate; 313, guide wheel; 314, connecting cable; 315 , torsion spring; 316, mounting rod; 317, welding top; 318, movable block seat; 319, guide rail seat; 320, mounting ring frame; 321, spring rod; 322, guide; 323, mounting; 324, gear; 325, telescopic spring; 4, housing fixing module; 401, fixing plate frame; 402, electric telescopic rod; 403, limit rod; 404, limit plate; 405, hydraulic rod; 4 06, fixed splint; 407, fixed seat; 408, fixed suction cup; 409, connecting pipe; 410, fixed bin; 411, suction cup; 412, supporting side plate; 413, annular pipe; 414, control valve; 415, connecting ball; 416, negative pressure pump; 417, movable frame; 418, electric push rod; 5, rubber block seat; 6, mounting bracket; 7, welding adjustment module; 701, mounting plate frame; 702, transmission Belt; 703, guide rod; 704, screw rod; 705, limit top plate; 706, locking plate frame; 707, driven gear; 708, driving gear; 709, transmission gear; 710, locking plate; 711, electric rod; 712, mounting seat; 713, stepping motor; 714, driving rod; 715, linkage wheel; 8, shell body; 9, fixing bracket; 10, adjusting telescopic rod; 11, driving motor. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] The welding equipment for a flue gas heat exchanger shell disclosed in the present invention is mainly used in scenarios where the time for a single welding is difficult to effectively control. During the welding process, the welding time may be too long or insufficient, resulting in the shell being welded through or the welding being not firm enough, and the welding quality being poor.

[0033] Reference Figure 1-Figure 10A welding device for a flue gas heat exchanger shell comprises a base plate seat 1 and a mounting bracket 6, a welding base 2 and a rubber block base 5 are fixedly connected to the top of the base plate seat 1, the mounting bracket 6 is located at one side of the welding base 2, and a welding module 3 is arranged on the top of the mounting bracket 6, a fixing bracket 9 is fixedly connected to an outer wall of one side of the welding base 2, and an adjustable telescopic rod 10 is arranged on the inner walls of both sides of the fixing bracket 9, and a shell fixing module 4 is arranged at the output end of the two adjustable telescopic rods 10, a driving motor 11 is fixedly connected to an outer wall of one side of the fixing bracket 9, and the output shaft of the driving motor 11 is connected to one end of one of the adjustable telescopic rods 10 through a coupling, an installation slot is opened on an outer wall of one side of the welding base 2, and a welding adjustment module 7 is arranged inside the installation slot, and the welding adjustment module 7 is located below the welding module 3.

[0034] Specifically, the rubber block seat 5 and the drive motor 11 are used in conjunction with the shell fixing module 4 when in use. The shell fixing module 4 is used to fix the shell body 8 when in use, and the shell fixing module 4 is convenient for disassembly and replacement of the shell body 8 after the welding operation, and is easy to use; the welding module 3 can limit the time of a single welding when in use, so as to avoid the situation where the shell is welded through or the welding is not firm enough during welding, and can increase the shell welding quality when in use to meet the welding requirements; the welding adjustment module 7 can rotate the shell body 8 or adjust the height of the welding head body 304 as needed when in use to adjust the welding position, and at the same time, the position of the shell body 8 can be further adjusted by adjusting the telescopic rod 10, thereby meeting the multi-degree-of-freedom welding requirements.

[0035] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6In a preferred embodiment, the welding module 3 includes a mounting frame 301, the mounting frame 301 is fixedly connected to the top of the mounting bracket 6, the outer walls of both sides of the mounting frame 301 are provided with guide openings 302, the inner walls of the two guide openings 302 are slidably connected with the same guide plate 303, the outer wall of the guide plate 303 is fixedly connected with a fixed plate seat 311, the top of the fixed plate seat 311 is fixedly connected with a guide rail seat 319, the outer wall of the guide rail seat 319 is slidably connected with a movable block seat 318, the inner wall of the movable block seat 318 is provided with a welding head body 304, and the inner walls of both sides of the fixed plate seat 311 are fixedly connected with the same fixed frame 310, the fixed frame 31 A telescopic spring 325 is fixedly connected to the inner wall of one side of the guide rail seat 319, and one end of the telescopic spring 325 is fixedly connected to the outer wall of one side of the movable block seat 318; two mounting openings 305 are provided on the outer wall of one side of the mounting frame 301, and the inner walls of the two mounting openings 305 are slidably connected to the same mounting ring frame 320, and the inner wall of the mounting ring frame 320 is fixedly connected to the welding motor 308, and the output shaft of the welding motor 308 is connected to the gear member 324 through a coupling, and the outer wall of the gear member 324 is connected to the mounting member 323 through a bearing, and the bottom of the mounting member 323 is fixedly connected to two spring rod members 321, and the bottom ends of the two spring rod members 321 are fixedly connected The bottom inner wall of the mounting frame 301 is fixed with a guide member 322 on the mounting frame 301. The bottom of the mounting member 323 is fixedly connected with a connecting cable 314, and the connecting cable 314 is located inside the guide member 322. The bottom of the fixing plate 307 is fixedly connected with two gear plates 312, and the two gear plates 312 are meshed with the gear member 324. The inner walls on both sides of the fixing plate seat 311 are connected with the same mounting rod 316 through bearings, and the outer wall of the mounting rod 316 is fixedly connected with a welding top member 317. One end of the connecting cable 314 is fixedly connected to the outer wall of one side of the welding top member 317, and the outer wall of the mounting rod 316 is provided with two torsion spring members 315. One end of the two torsion spring members 315 are respectively fixedly connected to the inner walls of the fixed plate seat 311 on both sides, and the other ends of the two torsion spring members 315 are respectively fixedly connected to the outer walls of the welding top member 317 on both sides, and the inner walls of the mounting frame 301 on both sides are connected to the same mounting shaft 309 through bearings, and the outer wall of the mounting shaft 309 is fixedly connected to the guide wheel 313, and the outer wall of the connecting cable 314 is in contact with the inner wall of the guide wheel 313, and the inner walls of the mounting frame 301 on both sides are fixedly connected to the same fixing plate 307, and the outer wall of one side of the fixing plate 307 is fixedly connected to the reset spring 306, and one end of the reset spring 306 is fixedly connected to the outer wall of one side of the fixing frame 310.

[0036] Specifically, during welding, the welding motor 308 is started, and the welding motor 308 drives the gear member 324 to rotate. Since the gear member 324 is meshed with the gear plate 312, the welding motor 308 drives the gear plate 312 and the fixed plate seat 311 to move, thereby driving the welding head body 304 to move and contact the shell body 8, the telescopic spring 325 is compressed, and the movable block seat 318 moves on the guide rail seat 319 to weld, and at the same time, the reset spring 306 is stretched. With the operation of the welding motor 308, the fixed plate seat 311 can drive the welding top member 317 to contact the shell body 8. At this time, the welding top member 317 rotates to pull the connecting cable 31 4, so that the connecting cable 314 pulls the mounting member 323, thereby compressing the spring rod 321, and causing the mounting member 323 to drive the gear member 324 to descend and separate from the gear plate 312. At this time, the reset spring 306 and the telescopic spring 325 are restored, and the reset spring 306 drives the fixed plate seat 311 to move backward, so that the welding head body 304 is separated from the shell. At the same time, the telescopic spring 325 resets the welding head body 304 on the guide rail seat 319, and then the torsion spring member 315 and the spring rod 321 drive the welding top member 317 and the mounting member 323 to reset, so that the gear member 324 and the gear plate 312 are torsion springs again, so as to perform the next welding until the welding operation is completed;

[0037] In a specific application scenario, the welding module 3 is suitable for the welding link of the flue gas heat exchanger shell, that is, the welding module 3 can limit the contact welding time between the welding head body 304 and the shell body 8 when in use. After the welding reaches a certain time, the welding head body 304 can retract and separate from the shell body 8, thereby avoiding the shell body 8 being welded through due to excessive welding time during use. When welding, the welding module 3 can make the welding head body 304 contact with the shell body 8 for a certain period of time, thereby avoiding the situation where the welding is not firm due to insufficient welding time, thereby increasing the use effect of the device and improving the welding quality of the device during welding. When in use, there is no need for manual welding by the staff, the automation effect is good, and the work intensity of the staff is reduced.

[0038] Reference Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9In a preferred embodiment, the shell fixing module 4 includes a fixed plate frame 401, which is fixedly connected to the output ends of the two adjustable telescopic rods 10, and two limit rods 403 and two limit plates 404 are fixedly connected to the fixed plate frame 401, and the outer walls of the two limit plates 404 are slidably connected with the same fixed clamping plate 406, and the top of the fixed plate frame 401 is fixedly connected with a hydraulic rod 405, and the output end of the hydraulic rod 405 is fixedly connected to the top of the fixed clamping plate 406, and the outer walls of the two limit rods 403 are slidably connected with the same movable frame 417, and the fixed plate frame 401 is fixedly connected with an electric telescopic rod 402, and the output end of the electric telescopic rod 402 is fixedly connected to the bottom of the movable frame 417; the movable frame 417 is fixedly connected with two electric push rods 418, and the output ends of the two electric push rods 418 are fixedly connected with the same fixed bin 410, and the outer walls of both sides of the fixed bin 410 are fixedly connected with support side plates 412, and one side outer wall of the fixed bin 410 is provided with multiple A suction cup member 411 is provided, and a negative pressure pump 416 is fixedly connected to the inner wall of the movable frame 417, a connecting ball 415 is fixedly connected to the input end of the negative pressure pump 416, and three connecting pipes 409 are fixedly connected to the outer wall of the connecting ball 415, and the input end of one connecting pipe 409 is connected to the interior of the fixed bin 410; a fixing seat 407 is connected to the fixed plate frame 401 and the fixed clamping plate 406 through a bearing, and the input ends of the other two connecting pipes 409 are fixedly connected to annular pipes 413, and the two annular pipes 413 are respectively located inside the two fixed seats 407, the outer walls of the two annular tubes 413 are fixedly connected with multiple fixed suction cups 408, the inner walls of the opposite sides of the two fixed seats 407 are opened with multiple circular holes, the multiple fixed suction cups 408 are respectively located inside the multiple circular holes, and the outer walls of the two connecting pipes 409 are provided with control valves 414, the inside of the two fixed seats 407 are provided with the same shell body 8, and the outer walls of the multiple suction cup members 411 are in contact with the outer wall of one side of the shell body 8.

[0039] Specifically, when in use, the shell body 8 is set on the fixed seat 407 and the supporting side plate 412, the electric push rod 418 drives the fixed bin 410 and the supporting side plate 412 to move, and the shell position is adjusted. After reaching the appropriate position, the negative pressure pump 416 is started, and the negative pressure pump 416 discharges the air inside the annular tube 413 and the fixed bin 410 through the connecting pipe 409, so that the annular tube 413 and the fixed bin 410 are in a negative pressure state, and then the shell body 8 is fixed by the fixed suction cup 408 and the suction cup member 411, and the control is closed. The valve 414 is controlled. At this time, the hydraulic rod 405 and the electric telescopic rod 402 are started to adjust the positions of the fixed clamping plate 406 and the movable frame 417, so that multiple parts of the shell are in contact. Then, the drive motor 11 is started to drive the adjustable telescopic rod 10 to rotate, and then the fixed plate frame 401 is driven to rotate, so that the shell body 8 is moved to the top of the welding seat 2 for welding. After welding, the fixed plate frame 401 is rotated and tilted, and the fixed suction cup 408 and the suction cup component 411 are unfixed, and the shell body 8 is collected and replaced;

[0040] In a specific application scenario, the shell fixing module 4 is suitable for fixing and replacing the shell of a flue gas heat exchanger. When in use, the shell fixing module 4 can fix multiple parts of the shell body 8 separately, and after fixation, the shell parts can be preliminarily clamped and docked, thereby facilitating welding operations during use and improving the use effect of the device. When in use, the shell fixing module 4 is adsorbed and fixed by negative pressure, and the disassembly and replacement operations after welding are more convenient and quick, further increasing the use effect of the device, facilitating operation by staff, and improving practicality.

[0041] Reference Figure 2 , Figure 7 and Fig.10In a preferred embodiment, the welding adjustment module 7 includes a mounting plate frame 701 and a transmission gear 709, the mounting plate frame 701 is fixedly connected to the bottom of the mounting slot, the transmission gear 709 is fixedly connected to the bottom of one of the fixed seats 407, the mounting plate frame 701 is connected with a screw rod 704 and a driving rod 714 through a bearing, the outer walls of the screw rod 704 and the driving rod 714 are fixedly connected with a linkage wheel 715, the outer walls of the two linkage wheels 715 are provided with the same transmission belt 702, and the mounting plate frame 701 is fixedly connected with two guide rods 703, the top ends of the two guide rods 703 are fixedly connected with the same limiting top plate 705, the top ends of the screw rod 704 and the bottom ends of the limiting top plate 705 are fixedly connected with each other, and the screw rod 704 is fixedly connected with the bottom ends of the limiting top plate 705. The parts are connected by bearings, and the mounting bracket 6 is arranged on the outer wall of the screw rod 704 and the two guide rods 703; an electric rod 711 is fixedly connected to the inner wall of one side of the mounting slot, and the output end of the electric rod 711 is fixedly connected to the mounting seat 712, and the inner wall of the mounting seat 712 is fixedly connected to the stepper motor 713, and the output shaft of the stepper motor 713 is connected to the driving gear 708 through a coupling, and the driving gear 708 is meshed with the transmission gear 709, and the top of the driving rod 714 is fixedly connected to the driven gear 707, and the outer wall of the mounting seat 712 is fixedly connected to the locking plate frame 706, and the locking plate frame 706 is clamped with the driven gear 707, and the top of the locking plate frame 706 is fixedly connected to the locking plate 710.

[0042] Specifically, during welding, the telescopic rod 10 is adjusted as welding is progressing, and the telescopic rod 10 drives the fixed plate frame 401 to move, thereby causing the shell body 8 to move in parallel. At the same time, the electric rod 711 is started as needed during welding, and the electric rod 711 drives the mounting seat 712 and the stepper motor 713 to move, so that the stepper motor 713 drives the driving gear 708 to engage with the driven gear 707. At this time, the mounting seat 712 can drive the locking plate frame 706 to separate from the driven gear 707, and the locking plate frame 706 drives the locking plate 710 to lock the transmission gear 709. At this time, the rotation of the driven gear 707 can drive the driving rod 714 to rotate, and then cooperate with the transmission belt 702 and the linkage wheel 715 to drive the screw rod 704 to rotate, thereby performing The height of the mounting bracket 6 and the welding head body 304 is adjusted, and when the shell body 8 is rotated and adjusted, the electric rod 711 drives the mounting seat 712 to move, so that the driving gear 708 is meshed with the transmission gear 709. At this time, the locking plate 710 is separated from the transmission gear 709, and the locking plate frame 706 is engaged with the driven gear 707 to prevent the screw rod 704 from being affected and rotating. At this time, the air pump is turned off. Since the control valve 414 is closed, the inside of the annular tube 413 is still in a negative pressure state, and the inside of the fixed warehouse 410 returns to the air pressure state, and the electric push rod 418 drives the suction cup 411 to separate from the shell body 8, and then the transmission gear 709 rotates to drive the shell body 8 to rotate. After the rotation, the suction cup 411 fixes the shell body 8 again, and the rotation adjustment of the shell body 8 is completed at the same time;

[0043] In a specific application scenario, the welding adjustment module 7 is suitable for the shell welding link, that is, the welding adjustment module 7 can rotate the shell body 8 according to the welding process when in use, and can also cooperate with the adjusting telescopic rod 10 to move the shell body 8 in parallel during welding, so that the welding head body 304 can perform welding operations on different surfaces and different positions of the shell body 8, and when adjusting, the welding adjustment module 7 can adjust the height of the welding head body 304 to further increase the welding position, increase the welding freedom of the device when in use, and improve the use effect of the device, and when adjusting, the device can lock the adjusted position and height to avoid position deviation, thereby further increasing the use effect of the device.

[0044] A method for welding a flue gas heat exchanger shell, using the above-mentioned welding device for a flue gas heat exchanger shell, comprises the following steps:

[0045] Step 1, set the heat exchanger shell body 8 on the fixed seat 407 and the supporting side plate 412. When in use, set the shell body 8 on the fixed seat 407 and the supporting side plate 412, and the electric push rod 418 drives the fixed bin 410 and the supporting side plate 412 to move, adjust the shell position, and after reaching the appropriate position, start the negative pressure pump 416, and the negative pressure pump 416 discharges the air inside the annular tube 413 and the fixed bin 410 through the connecting pipe 409, so that the annular tube 413 and the fixed bin 410 are in a negative pressure state, and then fix the shell body 8 through the fixed suction cup 408 and the suction cup member 411, and close the control valve 414, at this time, start the hydraulic rod 405 and the electric telescopic rod 402 to adjust the position of the fixed clamping plate 406 and the movable frame 417, so that multiple parts of the shell are in contact, and then start the drive motor 11, and drive the adjustable telescopic rod 10 to rotate through the drive motor 11, and then drive the fixed plate frame 401 to rotate, so that the shell body 8 moves to the top of the welding seat 2 for welding;

[0046] Step 2, after moving to the top of the welding seat 2, start the welding motor 308, the welding motor 308 drives the gear part 324 to rotate, because the gear part 324 is meshed with the gear plate 312, the welding motor 308 drives the gear plate 312 and the fixed plate seat 311 to move, and then drives the welding head body 304 to move and contact the shell body 8, the telescopic spring 325 is compressed, and the movable block seat 318 moves on the guide rail seat 319 for welding, and at the same time the reset spring 306 is stretched. With the operation of the welding motor 308, the fixed plate seat 311 can drive the welding top piece 317 to contact the shell body 8. At this time, the welding top piece 317 rotates to pull the connecting line The cable 314 is connected to the connecting cable 314 to pull the mounting member 323, thereby compressing the spring rod 321, and causing the mounting member 323 to drive the gear member 324 to descend and separate from the gear plate 312. At this time, the reset spring 306 and the telescopic spring 325 are restored, and the reset spring 306 drives the fixed plate seat 311 to move backward, so that the welding head body 304 is separated from the shell. At the same time, the telescopic spring 325 resets the welding head body 304 on the guide rail seat 319. After that, the torsion spring member 315 and the spring rod 321 drive the welding top member 317 and the mounting member 323 to reset, so that the gear member 324 and the gear plate 312 are torsion springed again to perform the next welding until the welding operation is completed;

[0047] Step 3, during the welding operation, as the welding is in progress, the telescopic rod 10 is started and adjusted, and the telescopic rod 10 drives the fixed plate frame 401 to move, thereby making the shell body 8 move parallely, and at the same time, the electric rod 711 is started as needed during welding, and the electric rod 711 drives the mounting seat 712 and the stepper motor 713 to move, so that the stepper motor 713 drives the driving gear 708 to mesh with the driven gear 707, and at this time, the mounting seat 712 can drive the locking plate frame 706 to separate from the driven gear 707, and make the locking plate frame 706 drive the locking plate 710 to lock the transmission gear 709, and at this time, the rotation of the driven gear 707 can drive the driving rod 714 to rotate, and then cooperate with the transmission belt 702 and the linkage wheel 715 to drive the screw rod 704 to rotate, so as to adjust the height of the mounting bracket 6 and the welding head body 304, and when the shell is in progress. When the body 8 is rotated and adjusted, the electric rod 711 drives the mounting seat 712 to move, so that the driving gear 708 is meshed with the transmission gear 709. At this time, the locking plate 710 is separated from the transmission gear 709, and the locking plate frame 706 is engaged with the driven gear 707 to prevent the screw rod 704 from being affected by the rotation. At this time, the air pump is turned off. Since the control valve 414 is closed, the inside of the annular tube 413 is still in a negative pressure state, and the inside of the fixed warehouse 410 returns to the air pressure state, the electric push rod 418 drives the suction cup member 411 to separate from the shell body 8, and then the transmission gear 709 rotates to drive the shell body 8 to rotate. After the rotation, the suction cup member 411 fixes the shell body 8 again, and the rotation adjustment of the shell body 8 is completed at the same time. Until the welding is completed, the fixed plate frame 401 rotates and tilts, the fixed suction cup 408 and the suction cup member 411 are unfixed, and the shell body 8 is collected and replaced.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding device for a flue gas heat exchanger shell, comprising a base plate (1) and a mounting bracket (6), characterized in that: The top of the base plate seat (1) is fixedly connected with a welding seat (2) and a rubber block seat (5); a mounting bracket (6) is located on one side of the welding seat (2), and a welding module (3) is arranged on the top of the mounting bracket (6); a fixing bracket (9) is fixedly connected to an outer wall of one side of the welding seat (2); both inner walls of the fixing bracket (9) are provided with adjustable telescopic rods (10), and the output ends of the two adjustable telescopic rods (10) are provided with a shell fixing module (4); an outer wall of one side of the fixing bracket (9) is fixedly connected with a driving motor (11), and the output shaft of the driving motor (11) is connected to one end of one of the adjustable telescopic rods (10) through a coupling; an outer wall of one side of the welding seat (2) is provided with a mounting notch, and a welding adjustment module (7) is arranged inside the mounting notch, and the welding adjustment module (7) is located below the welding module (3).

2. The welding equipment for a flue gas heat exchanger shell according to claim 1, characterized in that: The welding module (3) comprises a mounting frame (301), the mounting frame (301) is fixedly connected to the top of the mounting bracket (6), the outer walls of both sides of the mounting frame (301) are provided with guide openings (302), the inner walls of the two guide openings (302) are movably connected to the same guide plate (303), the outer wall of the guide plate (303) is fixedly connected to a fixed plate seat (311), the top of the fixed plate seat (311) is fixedly connected to a guide rail seat (319), the outer wall of the guide rail seat (319) is movably connected to a movable block seat (318), the inner wall of the movable block seat (318) is provided with a welding head body (304), and the inner walls of both sides of the fixed plate seat (311) are fixedly connected to the same fixed frame (310), the inner wall of the fixed frame (310) facing the guide rail seat (319) is fixedly connected to a telescopic spring (325), and one end of the telescopic spring (325) is fixedly connected to the outer wall of one side of the movable block seat (318).

3. The welding equipment for a flue gas heat exchanger shell according to claim 2, characterized in that: The outer wall of one side of the installation frame (301) is provided with two installation openings (305), the inner walls of the two installation openings (305) are movably connected to the same installation ring frame (320), the inner wall of the installation ring frame (320) is fixedly connected to a welding motor (308), the output shaft of the welding motor (308) is connected to a gear member (324) via a coupling, the outer wall of the gear member (324) is movably connected to a mounting member (323), and the bottom of the mounting member (323) is fixedly connected to two spring rod members (321), the bottom ends of the two spring rods (321) are fixedly connected to the bottom inner wall of the mounting frame (301), and a guide member (322) is provided on the mounting frame (301), the bottom of the mounting member (323) is fixedly connected to a connecting cable (314), and the connecting cable (314) is located inside the guide member (322), and the bottom of the fixed plate member (307) is fixedly connected to two gear plates (312), and the two gear plates (312) are meshed with the gear member (324).

4. The welding equipment for a flue gas heat exchanger shell according to claim 3, characterized in that: The inner walls on both sides of the fixed plate seat (311) are movably connected to the same mounting rod (316), the outer wall of the mounting rod (316) is fixedly connected to a welding top piece (317), one end of the connecting cable (314) is fixedly connected to the outer wall of one side of the welding top piece (317), and the outer wall of the mounting rod (316) is provided with two torsion springs (315), one end of the two torsion springs (315) is respectively fixedly connected to the inner walls on both sides of the fixed plate seat (311), and the other ends of the two torsion springs (315) are respectively fixedly connected to the outer walls on both sides of the welding top piece (317). The inner walls on both sides of the mounting frame (301) are movably connected to the same mounting shaft rod (309), the outer wall of the mounting shaft rod (309) is fixedly connected to a guide wheel (313), the outer wall of the connecting cable (314) is in contact with the inner wall of the guide wheel (313), and the inner walls on both sides of the mounting frame (301) are fixedly connected to the same fixing plate (307), one side outer wall of the fixing plate (307) is fixedly connected to a reset spring (306), and one end of the reset spring (306) is fixedly connected to the outer wall of one side of the fixing frame (310).

5. The welding equipment for a flue gas heat exchanger shell according to claim 4, characterized in that: The shell fixing module (4) comprises a fixed plate frame (401), the fixed plate frame (401) is fixedly connected to the output ends of the two adjustable telescopic rods (10), the fixed plate frame (401) is fixedly connected to two limit rods (403) and two limit plate members (404), the outer walls of the two limit plate members (404) are movably connected to the same fixed clamping plate (406), the top of the fixed plate frame (401) is fixedly connected to a hydraulic rod (405), the output end of the hydraulic rod (405) is fixedly connected to the top of the fixed clamping plate (406), and the outer walls of the two limit rods (403) are movably connected to the same movable frame (417), the fixed plate frame (401) is fixedly connected to an electric telescopic rod (402), and the output end of the electric telescopic rod (402) is fixedly connected to the bottom of the movable frame (417).

6. The welding equipment for a flue gas heat exchanger shell according to claim 5, characterized in that: Two electric push rods (418) are fixedly connected to the movable frame (417), and the output ends of the two electric push rods (418) are fixedly connected to the same fixed bin (410). The outer walls on both sides of the fixed bin (410) are fixedly connected to support side plates (412). The outer wall on one side of the fixed bin (410) is provided with a plurality of suction cups (411). The inner wall of the movable frame (417) is fixedly connected to a negative pressure pump (416), and the input end of the negative pressure pump (416) is fixedly connected to a connecting ball (415). The outer wall of the connecting ball (415) is fixedly connected to three connecting pipes (409), and the input end of one connecting pipe (409) is connected to the interior of the fixed bin (410).

7. The welding equipment for a flue gas heat exchanger shell according to claim 6, characterized in that: The fixed plate frame (401) and the fixed clamping plate (406) are both movably connected with a fixed seat (407), and the input ends of the other two connecting pipes (409) are both fixedly connected with an annular pipe (413), and the two annular pipes (413) are respectively located inside the two fixed seats (407), and the outer walls of the two annular pipes (413) are both fixedly connected with a plurality of fixed suction cups (408), and the inner walls of the two fixed seats (407) on the opposite side are each provided with a plurality of circular holes, and the plurality of fixed suction cups (408) are respectively located inside the plurality of circular holes, and the outer walls of the two connecting pipes (409) are both provided with a control valve (414), and the same shell body (8) is provided inside the two fixed seats (407), and the outer walls of the plurality of suction cup members (411) are in contact with the outer wall of one side of the shell body (8).

8. The welding equipment for a flue gas heat exchanger shell according to claim 7, characterized in that: The welding adjustment module (7) comprises a mounting plate frame (701) and a transmission gear (709); the mounting plate frame (701) is fixedly connected to the bottom of the mounting slot; the transmission gear (709) is fixedly connected to the bottom of one of the fixed seats (407); a screw rod (704) and a driving rod (714) are movably connected to the mounting plate frame (701); the outer walls of the screw rod (704) and the driving rod (714) are both fixedly connected to a linkage wheel (715); the outer walls of the two linkage wheels (715) are provided with a same transmission belt (702); and two guide rods (703) are fixedly connected to the mounting plate frame (701); the top ends of the two guide rods (703) are fixedly connected to a same limiting top plate (705); the top end of the screw rod (704) is movably connected to the bottom of the limiting top plate (705); and the mounting bracket (6) is arranged on the outer walls of the screw rod (704) and the two guide rods (703).

9. The welding equipment for a flue gas heat exchanger shell according to claim 8, characterized in that: An electric rod (711) is fixedly connected to the inner wall of one side of the mounting slot; the output end of the electric rod (711) is fixedly connected to the mounting seat (712); the inner wall of the mounting seat (712) is fixedly connected to a stepper motor (713); the output shaft of the stepper motor (713) is connected to a driving gear (708) via a coupling; the driving gear (708) is meshed with a transmission gear (709); the top of the driving rod (714) is fixedly connected to a driven gear (707); the outer wall of the mounting seat (712) is fixedly connected to a locking plate frame (706); the locking plate frame (706) is engaged with the driven gear (707); and the top of the locking plate frame (706) is fixedly connected to a locking plate (710).

10. A method for welding a flue gas heat exchanger shell, using a welding device for a flue gas heat exchanger shell as claimed in claim 9, characterized in that: The steps include: Step 1: The heat exchanger shell body (8) is arranged on the fixing seat (407) and the supporting side plate (412), and the shell fixing module (4) is started to fix the shell body (8). After fixing, the driving motor (11) is started, and the driving motor (11) drives the shell body (8) to move above the welding seat (2); Step 2: After moving to the top of the welding seat (2), start the welding module (3), and drive the welding head body (304) to perform welding operation through the welding module (3); Step 3: During welding, the welding adjustment module (7) and the adjusting telescopic rod (10) are activated to adjust the shell body (8) or the height of the welding head body (304) as needed until the welding is completed, and the staff collects the shell body (8).

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