Device for vertical welding of large-diameter heat exchanger

Abstract

The embodiment of the utility model provides a device for vertical welding of a large-diameter heat exchanger, and relates to the field of furniture. The device for vertical welding of the large-diameter heat exchanger comprises a supporting assembly and a movable lifting assembly, when the device is used, a worker climbs to a lifting platform, an automatic lifting part is started to enable the lifting platform to move to a proper height, an electric telescopic part is started to extend to the side face of a heat exchanger body, and then the heat exchanger body is welded; at the moment, the distance between the movable expansion platform and the heat exchanger body is small, a worker takes down the handheld welding machine on the welding machine body and moves the handheld welding machine to the peripheral side of the heat exchanger body through the movable expansion platform, the peripheral side of the top of the heat exchanger body can be overhauled at the moment, and climbing to the center side of the top of the heat exchanger body is also convenient; the problems that in the prior art, when the top of a large-diameter vertical heat exchanger is overhauled and welded, the moving difficulty of workers is large, and the overhauling and welding difficulty is large are solved.

Description

Technical Field

[0001] The utility model relates to the field of furniture, in particular to a device for vertical welding of large-diameter heat exchangers. Background Art

[0002] Shell-and-tube heat exchangers, also known as tubular heat exchangers, are partition-type heat exchangers that use the walls of the tube bundle enclosed in the shell as the heat transfer surface. This type of heat exchanger has a simple structure, reliable operation, and can be manufactured from a variety of structural materials (primarily metal). It can operate under high temperatures and high pressures, making it the most widely used type. These heat exchangers are categorized as horizontal or vertical. The tower reboiler and feed preheater are typically vertical. This allows for better control of the tower bottom liquid level to ensure evaporation and return balance, and also allows for extended feed residence time to ensure adequate preheating. The tower overhead condenser is also typically vertical.

[0003] Existing vertical heat exchangers, especially large-diameter vertical heat exchangers, usually require the use of a lift when performing maintenance welding on the top. The worker uses a handheld welder to climb to the top support of the heat exchanger and then perform welding. This method uses the lift to rise to the top of the heat exchanger, then climbs to the top support of the heat exchanger, and then moves from the lift to the top of the heat exchanger. The distance between the lift and the top support of the heat exchanger is large, and the handheld welder needs to be moved throughout the entire process, which makes it difficult for workers to move and the maintenance welding is also difficult. Therefore, there are shortcomings. Utility Model Content

[0004] The purpose of the utility model is to provide a device for vertical welding of large-diameter heat exchangers, which can reduce the difficulty of workers' movement and facilitate workers to perform welding and maintenance on the top of the vertical heat exchanger.

[0005] An embodiment of the utility model provides a device for vertical welding of a large-diameter heat exchanger, comprising a supporting assembly and a movable lifting assembly.

[0006] The support assembly includes a support base, and a heat exchanger body is provided on one side of the support base;

[0007] The mobile lifting assembly includes an automatic lifting part, a lifting platform, a mobile extension platform, an electric telescopic part and an angled stabilizing part. The automatic lifting part is fixedly connected to both sides of the support base, the lifting platform is slidably connected to the automatic lifting part, a welding machine body is provided on the lifting platform, the automatic lifting part is used to control the lifting and lowering of the lifting platform, the mobile extension platform is symmetrically arranged on both sides of the bottom surface of the lifting platform, the electric telescopic part is meshed and connected to the bottom surface of the mobile extension platform, the electric telescopic part is used to move the mobile extension platform, one end of the angled stabilizing part is hinged to the mobile extension platform, and the other end of the angled stabilizing part is hinged to the side of the automatic lifting part.

[0008] In a specific embodiment, the automatic lifting component includes a supporting column, a sliding rail, a first motor and a threaded rod, the supporting column is symmetrically connected to both sides of the supporting base, the sliding rail is placed in the supporting column, the threaded rod is rotatably connected to the sliding rail, the output end of the first motor is fixedly connected to one end of the threaded rod, the two sides of the lifting platform are slidably connected to the sliding rail, and the threaded rod is rotatably connected to both sides of the lifting platform.

[0009] In a specific embodiment, sliding rods are fixedly connected to both sides of the support base, and both sides of the lifting platform are slidably connected to the sliding rods.

[0010] In a specific embodiment, the electric telescopic part includes a mounting platform, a second motor, a rotating shaft, a gear and a rack. The mounting platform is fixedly connected to both sides of the bottom surface of the lifting platform, and the mounting platform is slidably connected to the slide rod. The rotating shaft is rotatably connected to the mounting platform, and the end of the rotating shaft is fixedly connected to the output end of the second motor. The gear is fixedly connected to both sides of the rotating shaft, and the rack is fixedly connected to both sides of the bottom surface of the mobile expansion platform, and the gear is meshed with the rack.

[0011] In a specific embodiment, the mounting platform includes a mounting plate, a connecting block and a placement rack, the mounting plate is slidably connected to the slide rod, one end of the connecting block is fixedly connected to the mounting plate, the other end of the connecting block is fixedly connected to the lifting platform, the placement rack is fixedly connected to the mounting plate, and the rotating shaft is rotatably connected to the placement rack.

[0012] In a specific embodiment, the angled stabilizing member includes a mounting frame and a telescopic cylinder, the mounting frame is fixedly connected to both sides of the bottom end of the support base, the telescopic cylinder is hinged to the support base, the output end of the telescopic cylinder is hinged to the lifting platform, and the telescopic cylinder has a certain inclination angle.

[0013] In a specific embodiment, a guardrail is provided on one side of the lifting platform.

[0014] In a specific embodiment, there is a certain gap and a certain height difference between the lifting platform and the movable expansion platform, and a step is provided at the front end of the lifting platform, and the step extends to the surface of the movable expansion platform.

[0015] In a specific embodiment, limiting blocks are provided at both ends of the mobile expansion platform.

[0016] In a specific embodiment, a manual ladder is fixedly connected to the support base.

[0017] The beneficial effects of a device for vertical welding of large-diameter heat exchangers provided by an embodiment of the present utility model are as follows: when in use, a worker climbs onto the lifting platform, starts the automatic lifting part, moves the lifting platform to a suitable height, starts the electric telescopic part, and extends the electric telescopic part to the side of the heat exchanger body. At this time, the distance between the movable extension platform and the heat exchanger body is small. The worker removes the handheld welder on the welding machine body and moves to the surrounding side of the heat exchanger body through the movable extension platform. At this time, the surrounding side of the top of the heat exchanger body can be inspected and repaired, and climbing to the center side of the top of the heat exchanger body is also relatively convenient, which solves the problem in the prior art that when inspecting and welding the top of a large-diameter vertical heat exchanger, the worker has difficulty moving and the inspection and welding is difficult. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic structural diagram of a device for vertical welding of a large-diameter heat exchanger according to an embodiment of the present utility model.

[0020] Figure 2 This is a structural diagram of the mobile lifting assembly according to an embodiment of the present utility model.

[0021] Figure 3 This is a schematic structural diagram of the automatic lifting component of an embodiment of the utility model.

[0022] Figure 4 This is a schematic structural diagram of an electric telescopic member according to an embodiment of the present utility model.

[0023] Figure 5 This is a structural diagram of the installation platform of an embodiment of the utility model.

[0024] Figure 6 This is a schematic structural diagram of an angled stabilizing member according to an embodiment of the present invention.

[0025] Icons: 100-support assembly; 110-support base; 120-heat exchanger body; 130-slide rod; 140-manual ladder; 200-mobile lifting assembly; 210-automatic lifting component; 211-support column; 212-slide rail; 213-first motor; 214-threaded rod; 220-lifting platform; 221-guardrail; 222-step; 230-mobile expansion platform; 240-electric telescopic component; 241-mounting platform; 2411-mounting plate; 2412-connecting block; 2413-placement rack; 242-second motor; 243-rotating shaft; 244-gear; 245-rack; 250-angled stabilizing member; 251-mounting rack; 252-telescopic cylinder; 260-welding machine body; 270-limiting block; DETAILED DESCRIPTION

[0026] In the prior art, workers use a lift to ascend to the top of the heat exchanger, then climb onto the top support. The distance between the lift and the top support is considerable, and the welder must be moved with a handheld device throughout the entire process. This makes movement difficult and repair welding difficult. Therefore, the inventors have developed a device for vertical welding of large-diameter heat exchangers, which reduces the difficulty of movement and facilitates welding and repair work on the top of vertical heat exchangers.

[0027] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0028] Please refer to Figure 1 The present invention provides a device for vertical welding of large-diameter heat exchangers, comprising a support assembly 100 and a mobile lifting assembly 200. The mobile lifting assembly 200 facilitates movement of workers for welding and repair work on the top of the vertical heat exchanger, and the support assembly 100 is used to support the mobile lifting assembly 200.

[0029] Please refer to Figure 2The support assembly 100 includes a support base 110, and a heat exchanger body 120 is provided on one side of the support base 110; the mobile lifting assembly 200 includes an automatic lifting component 210, a lifting platform 220, a mobile expansion platform 230, an electric telescopic component 240 and an angled stabilizing component 250, the automatic lifting component 210 is fixedly connected to both sides of the support base 110, and the lifting platform 220 is slidably connected to the automatic lifting component 210, and a welding machine body 260 is provided on the lifting platform 220, wherein one end of the welding machine body 260 is a welding transformer and the other end is a handheld welding machine, and the two are connected by a cable, and the cable setting of this device is relatively long. The automatic lifting component 210 is used to control the lifting and lowering of the lifting platform 220. The mobile expansion platform 230 is symmetrically arranged on both sides of the bottom surface of the lifting platform 220. The electric telescopic component 240 is engaged and connected to the bottom surface of the mobile expansion platform 230. The electric telescopic component 240 is used to move the mobile expansion platform 230. One end of the bevel stabilizing component 250 is hinged to the mobile expansion platform 230, and the other end of the bevel stabilizing component 250 is hinged to the side of the automatic lifting component 210. During use, the worker climbs onto the lifting platform 220, starts the automatic lifting part 210, raises the lifting platform 220 to a suitable height, starts the electric telescopic part 240, and extends the electric telescopic part 240 to the side of the heat exchanger body 120. At this time, the distance between the movable extension platform 230 and the heat exchanger body 120 is small. The worker removes the handheld welder on the welding machine body 260 and moves to the surrounding side of the heat exchanger body 120 through the movable extension platform 230. At this time, the surrounding side of the top of the heat exchanger body 120 can be inspected and repaired, and climbing to the center side of the top of the heat exchanger body 120 is also relatively convenient, which solves the problem of difficulty in workers moving and difficulty in inspection and welding when inspecting and welding the top of a large-diameter vertical heat exchanger in the prior art.

[0030] Please refer to Figure 3 The automatic lifting member 210 includes support columns 211, slide rails 212, a first motor 213, and a threaded rod 214. The support columns 211 are symmetrically connected to both sides of the support base 110. The slide rails 212 are placed inside the support columns 211. The threaded rod 214 is rotatably connected to the slide rails 212. The output end of the first motor 213 is fixedly connected to one end of the threaded rod 214. Both sides of the lifting platform 220 are slidably connected to the slide rails 212, and the threaded rod 214 is rotatably connected to both sides of the lifting platform 220. When the first motor 213 is started synchronously, it drives the threaded rod 214 to rotate, causing the lifting platform 220 to slide on the slide rails 212, thereby raising the lifting platform 220 and allowing workers to reach the corresponding height.

[0031] Please refer to Figure 3 , the two sides of the support base 110 are fixedly connected with sliding rods 130, and the two sides of the lifting platform 220 are slidably connected to the sliding rods 130. The sliding rods 130 are used to assist the lifting platform 220 to slide up and down, thereby improving the stability of the movement.

[0032] Please refer to Figure 4 The electric telescopic member 240 includes a mounting platform 241, a second motor 242, a rotating shaft 243, a gear 244, and a rack 245. The mounting platform 241 is fixedly connected to both sides of the bottom surface of the lifting platform 220 and is slidably connected to the slide bar 130. The rotating shaft 243 is rotatably connected to the mounting platform 241. The ends of the rotating shaft 243 are fixedly connected to the output ends of the second motor 242. The gear 244 is fixedly connected to both sides of the rotating shaft 243. The rack 245 is fixedly connected to both sides of the bottom surface of the movable expansion platform 230, and the gear 244 and the rack 245 mesh with each other. When the second motor 242 is started, the rotating shaft 243 rotates, which drives the gear 244 to rotate, thereby driving the rack 245 to move on the gear 244, causing the movable expansion platform 230 to extend to the side around the top of the heat exchanger body 120.

[0033] Please refer to Figure 5 The mounting platform 241 includes a mounting plate 2411, a connecting block 2412, and a placement rack 2413. The mounting plate 2411 is slidably connected to the slide bar 130. One end of the connecting block 2412 is fixedly connected to the mounting plate 2411, and the other end of the connecting block 2412 is fixedly connected to the lifting platform 220. The placement rack 2413 is fixedly connected to the mounting plate 2411, and the rotating shaft 243 is rotatably connected to the placement rack 2413. When the lifting platform 220 moves up and down, it drives the mounting plate 2411 to move up and down.

[0034] Please refer to Figure 6 The angled stabilizer 250 includes a mounting bracket 251 and a telescopic cylinder 252. The mounting bracket 251 is fixedly connected to both sides of the bottom of the support base 110. The telescopic cylinder 252 is hinged to the support base 110. The output end of the telescopic cylinder 252 is hinged to the lifting platform 220 and has a certain tilt angle. As the lifting platform 220 moves up and down, the telescopic cylinder 252 rotates and the output end of the telescopic cylinder 252 simultaneously extends, thereby moving the mobile expansion platform 230 up and down. As the mobile expansion platform 230 extends along the horizontal plane, the telescopic cylinder 252 continues to extend, thereby improving the stability of the mobile expansion platform 230.

[0035] Please refer to Figure 3 A guardrail 221 is provided on one side of the lifting platform 220. The guardrail 221 is used to protect the safety of workers.

[0036] Please refer to Figure 3 There is a certain gap and a certain height difference between the lifting platform 220 and the mobile expansion platform 230. The front end of the lifting platform 220 is provided with a step 222, which extends to the surface of the mobile expansion platform 230. The step 222 is convenient for workers to move.

[0037] Please refer to Figure 6 , limit blocks 270 are provided at both ends of the mobile expansion platform 230. The limit blocks 270 prevent the mobile expansion platform 230 from being overloaded when it moves horizontally.

[0038] Please refer to Figure 2 A manual ladder 140 is fixedly connected to the support base 110. The lifting platform 220 has a certain height from the ground, and the manual ladder 140 facilitates workers to enter the lifting platform 220.

[0039] In summary, the working principle of the device for vertical welding of large-diameter heat exchangers according to the embodiment of the present invention is as follows: when in use, a worker climbs onto the lifting platform 220, synchronously starts the first motor 213, drives the threaded rod 214 to rotate, causes the lifting platform 220 to slide on the slide rail 212, thereby raising the lifting platform 220 so that the worker can reach the corresponding height, starts the second motor 242, drives the rotating shaft 243 to rotate, drives the gear 244 to rotate, thereby drives the rack 245 to move on the gear 244, and extends the mobile expansion platform 230 to The surrounding side of the top of the heat exchanger body 120. At this time, the distance between the movable expansion platform 230 and the heat exchanger body 120 is small. The worker removes the handheld welding machine on the welding machine body 260 and moves to the surrounding side of the heat exchanger body 120 through the movable expansion platform 230. At this time, the surrounding side of the top of the heat exchanger body 120 can be inspected and repaired, and it is also relatively convenient to climb to the center side of the top of the heat exchanger body 120. This solves the problem in the prior art that it is difficult for workers to move and repair and weld when inspecting and welding the top of a large-diameter vertical heat exchanger.

[0040] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A device for vertical welding of large diameter heat exchangers, characterized in that: include A support assembly (100), the support assembly (100) comprising a support base (110), a heat exchanger body (120) being provided on one side of the support base (110); A mobile lifting assembly (200), the mobile lifting assembly (200) comprising an automatic lifting member (210), a lifting platform (220), a mobile expansion platform (230), an electric telescopic member (240) and an angled stabilizing member (250), the automatic lifting member (210) being fixedly connected to both sides of the support base (110), the lifting platform (220) being slidably connected to the automatic lifting member (210), a welding machine body (260) being provided on the lifting platform (220), the automatic lifting member (210) The invention is used to control the lifting and lowering of the lifting platform (220); the mobile expansion platform (230) is symmetrically arranged on both sides of the bottom surface of the lifting platform (220); the electric telescopic member (240) is meshedly connected to the bottom surface of the mobile expansion platform (230); the electric telescopic member (240) is used to move the mobile expansion platform (230); one end of the bevel stabilizing member (250) is hinged to the mobile expansion platform (230), and the other end of the bevel stabilizing member (250) is hinged to the side of the automatic lifting member (210).

2. The device for vertical welding of large diameter heat exchangers according to claim 1, characterized in that: The automatic lifting component (210) includes a supporting column (211), a slide rail (212), a first motor (213) and a threaded rod (214); the supporting column (211) is symmetrically connected to both sides of the supporting base (110); the slide rail (212) is placed in the supporting column (211); the threaded rod (214) is rotatably connected to the slide rail (212); the output end of the first motor (213) is fixedly connected to one end of the threaded rod (214); both sides of the lifting platform (220) are slidably connected to the slide rail (212), and the threaded rod (214) is rotatably connected to both sides of the lifting platform (220).

3. The device for vertical welding of large diameter heat exchangers according to claim 2, characterized in that: Slide rods (130) are fixedly connected to both sides of the support base (110), and both sides of the lifting platform (220) are slidably connected to the slide rods (130).

4. The device for vertical welding of large diameter heat exchangers according to claim 3, characterized in that: The electric telescopic member (240) includes a mounting platform (241), a second motor (242), a rotating shaft (243), a gear (244) and a rack (245). The mounting platform (241) is fixedly connected to both sides of the bottom surface of the lifting platform (220), and the mounting platform (241) is slidably connected to the slide bar (130). The rotating shaft (243) is rotatably connected to the mounting platform (241). The end of the rotating shaft (243) is fixedly connected to the output end of the second motor (242). The gear (244) is fixedly connected to both sides of the rotating shaft (243). The rack (245) is fixedly connected to both sides of the bottom surface of the mobile expansion platform (230). The gear (244) and the rack (245) are meshed.

5. The device for vertical welding of large diameter heat exchangers according to claim 4, characterized in that: The mounting platform (241) includes a mounting plate (2411), a connecting block (2412) and a placement rack (2413); the mounting plate (2411) is slidably connected to the slide bar (130); one end of the connecting block (2412) is fixedly connected to the mounting plate (2411); the other end of the connecting block (2412) is fixedly connected to the lifting platform (220); the placement rack (2413) is fixedly connected to the mounting plate (2411); and the rotating shaft (243) is rotatably connected to the placement rack (2413).

6. The device for vertical welding of large diameter heat exchangers according to claim 4, characterized in that: The bevel stabilizing member (250) comprises a mounting frame (251) and a telescopic cylinder (252), wherein the mounting frame (251) is fixedly connected to both sides of the bottom end of the support base (110), the telescopic cylinder (252) is hinged to the support base (110), the output end of the telescopic cylinder (252) is hinged to the lifting platform (220), and the telescopic cylinder (252) has a certain tilt angle.

7. The device for vertical welding of large diameter heat exchangers according to claim 1, characterized in that: A guardrail (221) is provided around one side of the lifting platform (220).

8. The device for vertical welding of large diameter heat exchangers according to claim 1, characterized in that: There is a certain gap and a certain height difference between the lifting platform (220) and the mobile expansion platform (230), and a step (222) is provided at the front end of the lifting platform (220), and the step (222) extends to the surface of the mobile expansion platform (230).

9. The device for vertical welding of large diameter heat exchangers according to claim 1, characterized in that: Limiting blocks (270) are provided at both ends of the mobile expansion platform (230).

10. The device for vertical welding of large diameter heat exchangers according to claim 1, characterized in that: A manual ladder (140) is fixedly connected to the support base (110).

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