A welding device for processing a sleeve condenser

Abstract

This invention discloses a welding device for processing shell-and-tube condensers, relating to the field of shell-and-tube condenser welding technology. The invention includes a platform, on the front of which a longitudinal linear slide rail module is longitudinally arranged. Two sets of welding components are mounted on the longitudinal linear slide rail module, which can move the two sets of welding components away from or towards the platform. The invention pre-inserts the connectors into connector positioning components, then lays the spiral shell-and-tube condenser flat on the platform. The longitudinal linear slide rail module moves the welding components closer to the shell-and-tube condenser, and the connectors on both sets of welding components simultaneously engage with the outer tube. The inner tube passes through the connector and rests against the inner tube positioning component, achieving rapid centering and positioning of the three components. Subsequently, the two welding heads rotate around the connector, simultaneously welding both ends of the connector. This rapidly achieves welding of the spiral shell-and-tube condenser connector, resulting in high welding efficiency and enabling rapid splicing welding of shell-and-tube condensers.

Description

Technical Field

[0001] This invention relates to the field of welding technology for shell-and-tube condensers, and more specifically to a welding apparatus for processing shell-and-tube condensers. Background Technology

[0002] A shell-and-tube condenser is a water-cooled heat exchanger consisting of two tubes of different diameters stacked together. The outer tube is typically a seamless steel tube with an inner diameter of 50mm, inside which is a copper tube or a rolled low-fin copper tube, bent into a spiral structure. Refrigerant vapor enters the cavity between the inner and outer tubes from the top of the shell, condenses on the outer surface of the inner tube, and flows into the receiver. Cooling water enters the inner tube from the bottom and exchanges heat with the refrigerant in a counter-current manner from bottom to top.

[0003] Chinese patent (publication number: CN119035902B) discloses a welding device for processing a shell-and-tube condenser. The shell-and-tube condenser to be welded is placed on a buffer pad on a fixed mounting frame. A drive motor drives a movable lifting frame to descend, and the two buffer pads apply pressure to the shell-and-tube condenser to fix it. When multiple welding heads are installed, multiple welding heads weld the position between the upper and lower pipes of the shell-and-tube condenser. When a single welding head is installed, the welding head welds the position between the upper and lower pipes of the shell-and-tube condenser. Moving the welding head up and down welds different positions between the upper and lower pipes of the condenser.

[0004] The aforementioned patent uses an upper and lower clamping method to clamp and fix the shell-and-tube condenser, which can only be used for welding simple straight cylindrical shell-and-tube condensers. For spiral shell-and-tube condensers, the main welding position between the outer tube and the inner tube is located on the side. When welding the outer tube and the inner tube, it is necessary to attach an additional corresponding connector, and to center, position and tack fix the inner and outer tubes. Then, the welder uses a handheld welding torch to weld, resulting in low welding efficiency.

[0005] Meanwhile, in the actual processing, the required pipe lengths for condensers of different specifications and needs are different. Therefore, it is necessary to splice multiple spiral-structured shell condensers together. Existing equipment cannot perform splicing and welding, and splicing and welding mainly rely on manual labor. Once there is a deviation in the welding position, it is easy to cause the splicing spacing between adjacent shell condensers to be too large or the splicing to be crooked. Summary of the Invention

[0006] The purpose of this invention is to provide a welding apparatus for processing sleeve condensers in order to solve the above problems.

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0008] A welding device for processing a shell-and-tube condenser includes a platform. A longitudinal linear slide rail module is provided on the front of the platform. Two sets of welding components are provided on the longitudinal linear slide rail module. The two sets of welding components are distributed vertically. The longitudinal linear slide rail module can move the two sets of welding components away from or closer to the platform.

[0009] The welding assembly includes a U-shaped bracket mounted on a longitudinal linear slide rail module. Two guide rings are mounted on the top of the U-shaped bracket near the platform, and the mounting position is between the two guide rings. A connector positioning component is welded in the middle of the two guide rings. An inner tube positioning component is mounted on the top of the U-shaped bracket near the platform. The axis of the inner tube positioning component is collinear with the axis of the connector positioning component. Welding heads are provided on the outer sides of the two guide rings, and the welding heads can rotate around the guide rings.

[0010] Furthermore, a slider is slidably connected to the outer side of the guide ring, and an mounting plate is fixedly installed on the outer side of the slider. The welding head is mounted on the mounting plate, and a servo motor is mounted on the mounting plate. The servo motor drives the mounting plate to rotate around the guide ring through gears.

[0011] Furthermore, a fine-tuning cylinder is installed on the outer side of the mounting plate, and the welding head is fixedly installed on the telescopic head of the fine-tuning cylinder.

[0012] Furthermore, the connector positioning member has several sockets in a ring shape at one end near the stage, and the inner tube connecting pipe on the adjacent sleeve condenser can be inserted into the sockets.

[0013] Furthermore, a tapered groove is provided at one end of the inner tube positioning component near the stage.

[0014] Furthermore, a transverse linear slide rail module is fixedly installed on the longitudinal linear slide rail module, with the lower welding component installed on the slide base of the transverse linear slide rail module and the upper welding component installed on the base of the transverse linear slide rail module.

[0015] Furthermore, a loading port is provided on the right side of the platform, and two sets of main telescopic cylinders are fixedly installed on the left side of the platform. A main top plate is fixedly installed on the right side of the telescopic end of the main telescopic cylinder. The main top plate is L-shaped, and two sets of auxiliary telescopic cylinders are installed on the main top plate. A secondary top plate is fixedly installed on the front of the telescopic end of the auxiliary telescopic cylinder.

[0016] Furthermore, railings are provided on both the front and back of the top of the platform. The railings consist of two guide posts, and the welding position of the sleeve condenser can pass through the railings.

[0017] Furthermore, both ends of the main top plate are provided with sliding sleeves, which are sleeved on the guide posts.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention pre-inserts the connector into the connector positioning component, then lays the spiral-shaped sleeve condenser flat on the platform. The longitudinal linear slide rail module drives the welding assembly to approach the sleeve condenser. The connectors on the two sets of welding assemblies are simultaneously sleeved on the outer tube, and the inner tube passes through the connector and rests on the inner tube positioning component, achieving rapid centering and positioning of the three components. Subsequently, the two welding heads rotate around the connector and simultaneously weld the two ends of the connector, quickly achieving the welding of the spiral-shaped sleeve condenser connector with high welding efficiency.

[0020] 2. This invention adjusts the spacing between two sets of welding components to correspond to the position of the inner tube to be connected on the adjacent sleeve condenser. Then, the inner tube connecting pipe is sleeved on the inner tube. By setting the insertion depth, the welding position of the inner tube connecting pipe is adjusted so that it can be welded with a welding head. This allows for rapid splicing and welding of the sleeve condenser, with high welding efficiency and wide applicability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the welding of the sleeve condenser of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the welding device of the present invention;

[0023] Figure 3 This is a schematic diagram of the welding assembly structure of the present invention;

[0024] Figure 4 This is a cross-sectional view of the connector positioning component of the present invention;

[0025] Figure 5 This is a cross-sectional view of the inner tube positioning component of the present invention;

[0026] Figure 6 This is a schematic diagram of the single-tube condenser structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the multi-tube condenser structure of the present invention.

[0028] Reference numerals: 1. Platform; 2. Longitudinal linear slide rail module; 3. Transverse linear slide rail module; 4. Welding assembly; 41. U-shaped bracket; 42. Guide ring; 43. Connector positioning component; 431. Insert; 44. Inner tube positioning component; 441. Conical groove; 45. Slider; 46. Mounting plate; 47. Welding head; 48. Fine-tuning cylinder; 5. Main telescopic cylinder; 6. Main top plate; 7. Auxiliary telescopic cylinder; 8. Auxiliary top plate; 9. Outer tube; 10. Inner tube; 11. Connector; 12. Inner tube connecting pipe. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1, as Figures 1-7 As shown, a welding device for processing a sleeve condenser includes a platform 1. A longitudinal linear slide rail module 2 is arranged longitudinally on the front of the platform 1. Two sets of welding components 4 are arranged on the longitudinal linear slide rail module 2. The two sets of welding components 4 are distributed vertically. The longitudinal linear slide rail module 2 can drive the two sets of welding components 4 away from or close to the platform 1.

[0031] The welding assembly 4 includes a U-shaped bracket 41 mounted on the longitudinal linear slide rail module 2. Two guide rings 42 are mounted on the top of the U-shaped bracket 41 near the platform 1, and the mounting position is between the two guide rings 42. A connector positioning component 43 is welded in the middle of the two guide rings 42. An inner tube positioning component 44 is mounted on the top of the U-shaped bracket 41 near the platform 1. The axis of the inner tube positioning component 44 is collinear with the axis of the connector positioning component 43. Welding heads 47 are provided on the outer side of the two guide rings 42, and the welding heads 47 can rotate around the guide rings 42.

[0032] Preferably, a slider 45 is slidably connected to the outer side of the guide ring 42, and a mounting plate 46 is fixedly installed on the outer side of the slider 45. A welding head 47 is installed on the mounting plate 46, and a servo motor is installed on the mounting plate 46. The servo motor drives the mounting plate 46 to rotate around the guide ring 42 through gears.

[0033] Preferably, a fine-tuning cylinder 48 is mounted on the outer side of the mounting plate 46, and a welding head 47 is fixedly mounted on the telescopic head of the fine-tuning cylinder 48.

[0034] Preferably, the inner tube positioning component 44 has a conical groove 441 at one end near the platform 1. By setting the conical groove 441, the inner tube 10 can be inserted into the conical groove 441, and the inner tube 10 can be corrected into the conical groove 441 to achieve centering and positioning of the inner tube 10. It should be noted that the holes in the inner tube positioning component 44 are mounting holes and are installed on the U-shaped bracket 41 by bolts.

[0035] Preferably, a loading port is provided on the right side of the platform 1, and two sets of main telescopic cylinders 5 are fixedly installed on the left side of the platform 1. A main top plate 6 is fixedly installed on the right side of the telescopic end of the main telescopic cylinder 5. The main top plate 6 is L-shaped. Two sets of auxiliary telescopic cylinders 7 are installed on the main top plate 6. A secondary top plate 8 is fixedly installed on the front of the telescopic end of the auxiliary telescopic cylinder 7.

[0036] Preferably, railings are provided on both the front and back of the top of the platform 1. The railings consist of two guide posts, and the welding position of the sleeve condenser can pass through the railings.

[0037] Preferably, both ends of the main top plate 6 are provided with sliding sleeves, which are sleeved on the guide posts to improve the movement stability of the main top plate 6.

[0038] This embodiment mainly provides a welding method for a single spiral sleeve condenser;

[0039] The sleeve condenser is placed on the platform 1. Then, the auxiliary telescopic cylinder 7 is operated, which moves the auxiliary top plate 8 closer to the sleeve condenser. The sleeve condenser is pushed towards the welding assembly 4 and clamped between the auxiliary top plate 8 and the front railing. The welding position of the sleeve condenser passes through the railing. Next, the connector 11 is inserted into the connector positioning piece 43. The connector 11 passes through the connector positioning piece 43, and the inner cavity of the connector positioning piece 43 matches the shape of the connector 11. The longitudinal linear slide rail module 2 is operated, which moves the welding assembly 4 closer to the sleeve condenser. The outer tube 9 of the sleeve condenser is inserted into the connector 11, and the inner tube 10 passes through the connector. The head 11 is inserted into the inner tube positioning component 44. Under the guidance of the conical groove 441, the inner tube 10, outer tube 9, and connector 11 are centered and positioned. After positioning, since the position of connector 11 is determined, the welding position is determined. The two sets of welding heads 47 are started simultaneously to weld the welding positions at both ends of connector 11. At the same time, the servo motor drives the mounting plate 46 to rotate around the guide ring 42 through the gear, so that the welding head 47 rotates in a ring relative to the welding position to achieve ring welding of the welding position. After welding is completed, the longitudinal linear slide rail module 2 drives the welding component 4 away from the sleeve condenser. At the same time, the auxiliary telescopic cylinder 7 moves the auxiliary top plate 8 away from the sleeve condenser, and the sleeve condenser can be removed.

[0040] If the factory's cost allows, two sets of robotic arms can be configured, one for loading and unloading materials, and the other for placing connector 11.

[0041] In the second embodiment, based on the above embodiment, the connector positioning member 43 has a plurality of sockets 431 in a ring shape at one end near the platform 1, and the inner tube connecting pipe 12 on the adjacent sleeve condenser can be inserted into the sockets 431. By setting the sockets 431, the branch pipe on the connector 11 will not affect the positioning of the connector 11, and the inner tube connecting pipe 12 can be embedded therein. The welding position of the inner tube connecting pipe 12 and the inner tube 10 is controlled by setting the depth of the sockets 431, so that it can be welded by the welding head 47.

[0042] Preferably, a transverse linear slide rail module 3 is fixedly mounted on the longitudinal linear slide rail module 2. The lower welding component 4 is mounted on the slide block of the transverse linear slide rail module 3, and the upper welding component 4 is mounted on the base of the transverse linear slide rail module 3. This design ensures that the upper welding component 4 does not affect the movement of the lower welding component 4, and the U-shaped bracket 41 in the upper welding component 4 is erected at a high position, allowing the lower welding component 4 to move to a position below the upper welding component 4, thus improving adaptability.

[0043] This embodiment mainly provides a welding method for multiple spiral sleeve condensers;

[0044] After the first sleeve condenser is welded using the above steps, the main telescopic cylinder 5 is operated, causing the main top plate 6 to slide to the left. Then, the second condenser is loaded. The second condenser is pushed manually or by a robotic arm to approach the main top plate 6 together with the first condenser, so that the first condenser rests on the main top plate 6. The platform 1 of this invention can be tilted to the left, so that the sleeve condenser slides down onto the main top plate 6 under the action of gravity, making manual operation more convenient. Then, the steps in step one are repeated to weld the connector 11 of the second condenser. After welding, the longitudinal linear slide rail module 2 moves the welding assembly 4 away from the condenser. Then, the transverse linear slide rail module 3 is operated, causing the lower welding assembly 4 to move closer to the upper welding assembly 4. The position of the upper welding assembly 4 remains unchanged, corresponding to the inlet above the inner tube 10 of the second condenser. The assembly needs to be moved to the outlet below the inner tube 10 of the first condenser. At this time, the lower welding assembly 4 is located directly below the upper welding assembly 4. (Generally, the outlet and inlet of the inner tube 10 of adjacent sleeve condensers are on the same vertical plane. If there are special cases, the opening position of the socket 431 can be adjusted.) There is enough space for the welding head 47 to rotate between the two without structural interference. Then, the inner tube connecting tube 12 is sleeved on the corresponding inner tube 10. Then, the welding assembly 4 is driven to approach the inner tube connecting tube 12 through the longitudinal linear slide rail module 2. The inner tube connecting tube 12 is just embedded in the corresponding socket 431. By setting the depth of the socket 431, the welding position of the inner tube connecting tube 12 and the inner tube 10 is just located at the welding position of the welding head 47 on the side close to the platform 1. At this time, the welding head 47 is controlled to run and rotate around the guide ring 42 to realize the welding of the inner tube connecting tube 12 and the welding of adjacent sleeve condensers. The welding efficiency is high.

[0045] Meanwhile, the adjustable position of the main top plate 6 and the adjustable spacing of the two sets of welding components 4 make it suitable for welding sleeve condensers with different spiral turns.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A welding apparatus for processing a shell-and-tube condenser, comprising a stage (1), characterized in that, The front of the platform (1) is provided with a longitudinal linear slide rail module (2), and two sets of welding components (4) are provided on the longitudinal linear slide rail module (2). The two sets of welding components (4) are distributed vertically, and the longitudinal linear slide rail module (2) can drive the two sets of welding components (4) away from or close to the platform (1). The welding assembly (4) includes a U-shaped bracket (41) mounted on the longitudinal linear slide rail module (2). Two guide rings (42) are installed on the top of the U-shaped bracket (41) near the end of the platform (1), and the installation position is between the two guide rings (42). A connector positioning component (43) is welded in the middle of the two guide rings (42). An inner tube positioning component (44) is installed on the top of the U-shaped bracket (41) near the end of the platform (1). The axis of the inner tube positioning component (44) is collinear with the axis of the connector positioning component (43). Welding heads (47) are provided on the outer side of the two guide rings (42). The welding heads (47) can rotate around the guide rings (42). A slider (45) is slidably connected to the outer side of the guide ring (42), and an mounting plate (46) is fixedly installed on the outer side of the slider (45). The welding head (47) is installed on the mounting plate (46), and a servo motor is installed on the mounting plate (46). The servo motor drives the mounting plate (46) to rotate around the guide ring (42) through gears. A fine-tuning cylinder (48) is installed on the outside of the mounting plate (46), and a welding head (47) is fixedly installed on the telescopic head of the fine-tuning cylinder (48). The connector positioning component (43) has several sockets (431) in a ring shape at one end near the platform (1), and the inner tube connecting pipe (12) on the adjacent sleeve condenser can be inserted into the sockets (431).

2. The welding apparatus for processing a sleeve condenser according to claim 1, characterized in that, The inner tube positioning component (44) has a conical groove (441) at one end near the platform (1).

3. The welding apparatus for processing a sleeve condenser according to claim 2, characterized in that, The longitudinal linear slide rail module (2) is fixedly installed with a transverse linear slide rail module (3), the lower welding component (4) is installed on the slide of the transverse linear slide rail module (3), and the upper welding component (4) is installed on the base of the transverse linear slide rail module (3).

4. A welding apparatus for processing a sleeve condenser according to any one of claims 1-3, characterized in that, The loading port is provided on the right side of the loading platform (1), and two sets of main telescopic cylinders (5) are fixedly installed on the left side of the loading platform (1). A main top plate (6) is fixedly installed on the right side of the telescopic end of the main telescopic cylinder (5). The main top plate (6) is L-shaped. Two sets of auxiliary telescopic cylinders (7) are installed on the main top plate (6). A auxiliary top plate (8) is fixedly installed on the front of the telescopic end of the auxiliary telescopic cylinder (7).

5. The welding apparatus for processing a sleeve condenser according to claim 4, characterized in that, The top of the platform (1) is equipped with railings on both the front and back sides. The railings consist of two guide posts, and the welding position of the sleeve condenser can pass through the railings.

6. The welding apparatus for processing a sleeve condenser according to claim 5, characterized in that, Both ends of the main top plate (6) are provided with sliding sleeves, which are sleeved on the guide posts.

Images