Welding tool for hubbed flange

Abstract

The utility model relates to the technical field of ship piping system welding, and discloses a hubbed flange assembling and welding tool which comprises a fixing pipe (1) arranged on a welding platform (12), a sleeve (2) arranged on the fixing pipe (1), a positioning hole (13) formed in one side wall of the sleeve (2), and a positioning piece (3) arranged in the positioning hole (13). The other side wall of the sleeve (2) is connected with a locking piece (5) through a connecting piece (4), and one end of the connecting piece (4) is installed on a connecting plate (6) through a fixing piece (10). An argon hole (11) is formed in the connecting plate (6), and the argon hole (11) is located on the edge of the fixing piece (10) and within the range of the inner hole diameter of the center of a flange plate of the hubbed flange (7); an argon connector (9) is arranged on the argon hole (11); the connecting plate (6) is connected with a hubbed flange (7) through a kidney-shaped hole (14), and the hubbed flange (7) is connected with a straight pipe (8). Argon filling is convenient, overhead welding is avoided, and welding difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of marine piping welding technology, specifically to welding fixtures with neck flanges. Background Technology

[0002] When welding neck flanges and connecting pipes, clamping tools are used to fix them in place. After fixing, welding is done around the weld seam. Overhead welding is unavoidable, which is more difficult and more prone to weld defects.

[0003] CN210306366U discloses an auxiliary tooling for welding the center nozzle flange of a head. A column is set on the base, and a top plate is set on the top of the column. The nozzle flange is installed on the top plate. Although it can avoid overhead welding, it is inconvenient to purge with argon gas.

[0004] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a welding fixture for flanged assembly with neck that is convenient for argon filling, avoids overhead welding, and reduces welding difficulty.

[0006] To address the aforementioned technical problems, this utility model provides a welding fixture for a necked flange, including a welding platform with a fixed pipe on the platform and a sleeve on the fixed pipe. The sleeve can be moved up and down or rotated to adjust the welding height and position angle of the weldment. A positioning hole is formed on one side wall of the sleeve, and a positioning element is installed inside the positioning hole, abutting against the surface of the fixed pipe. A connector is fixedly installed on the other side wall of the sleeve, and a locking element is installed on the connector. One end of the connector is connected to the fixing element, which is fixedly installed on a connecting plate. An argon gas port is formed on the connecting plate, located next to the fixing element and within the center inner diameter range of the necked flange. An argon gas connector is provided on the argon gas port. The connecting plate connects to the necked flange through a slotted hole, and the necked flange is connected to a straight pipe.

[0007] By adopting the above technical solution, the necked flange is installed on the connecting plate, and an argon gas connector is installed on the connecting plate through an argon gas port. The argon gas port is located within the center inner diameter range of the flange, allowing argon gas to be directly supplied into the pipe during welding. This facilitates argon purging, prevents oxidation of the necked flange and the straight pipe surface, and improves welding quality. Through the cooperation of locking and fixing components, the connecting plate with the necked flange is locked onto the connecting component. This facilitates argon purging, and the angle of the necked flange can be adjusted by rotating it with the fixing component. Then, it is locked with the locking component. When spot welding the necked flange to the straight pipe, it can be rotated for welding, avoiding overhead welding and reducing welding difficulty.

[0008] Preferably, the diameter of the waist-shaped hole is <20mm, or 20-30mm, or 30-45mm.

[0009] By adopting the above technical solution, three different diameter waist-shaped holes are used to facilitate matching the specifications of the connecting plate and the flange with neck.

[0010] Preferably, the fixing tube is a smooth rod.

[0011] By adopting the above technical solution, it is ensured that the sleeve is pressed against the fixed tube by the positioning element, while facilitating the production and processing of the fixed tube.

[0012] Preferably, the fixed pipe is perpendicular to the welding platform, and its bottom is welded and fixed to the welding platform; the connector and straight pipe are parallel to the ground plane.

[0013] By adopting the above technical solution, the fixed pipe is welded and fixed on the welding platform, and the connecting plate is installed through the connector, which facilitates the adjustment of the neck flange to a horizontal position, better matches the straight pipe, and improves the reliability of the welding.

[0014] Preferably, the fastener is welded and fixed to the center of the connecting plate.

[0015] By adopting the above technical solution, the fastener is installed in the center of the connecting plate. After the fastener is connected to the connecting plate, it is easy for the connecting plate to balance the weight and make the welding stable.

[0016] Preferably, the positioning hole is a screw hole and the positioning element is a fixing bolt.

[0017] By adopting the above technical solution, the sleeve is positioned on the fixed pipe by bolts, achieving reliable positioning, and the vertical position is easy to adjust.

[0018] Preferably, the connecting part is a connecting screw, the locking part is a locking nut, and the fixing part is a fixing nut.

[0019] By adopting the above technical solution, the connecting plate is connected and locked to the connecting parts using screws and nuts, resulting in a firm connection, convenient assembly and disassembly, easy manufacturing and maintenance, and reduced production and manufacturing costs.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] 1. The necked flange of this utility model is installed on a connecting plate. The connecting plate is equipped with an argon gas connector through an argon gas hole. The argon gas hole is located within the inner diameter range of the center of the flange. Argon gas is directly supplied into the pipe during welding, which is convenient for argon filling, prevents oxidation of the necked flange and the straight pipe surface, and improves the welding quality.

[0022] 2. This utility model uses the cooperation of locking and fixing parts to lock the connecting plate with the neck flange onto the connecting part. This facilitates argon filling, and the angle of the neck flange can be adjusted by rotating with the fixing part. Then, the locking part is used to lock it. When the neck flange is spot welded to the straight pipe, it can be rotated for welding, avoiding overhead welding and reducing welding difficulty.

[0023] 3. This utility model uses three different diameter waist-shaped holes to facilitate matching the specifications of the connecting plate and the neck flange hole. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 A schematic diagram showing the waist-shaped hole on the connecting plate of this utility model.

[0026] Figure 3 This is a schematic diagram of the installation of the positioning component of this utility model.

[0027] Figure 4 This is a schematic diagram of the locking mechanism of this utility model.

[0028] In the diagram, 1. Fixed pipe, 2. Sleeve, 3. Positioning component, 4. Connecting component, 5. Locking component, 6. Connecting plate, 7. Necked flange, 8. Straight pipe, 9. Argon gas connector, 10. Fixing component, 11. Argon gas port, 12. Welding platform, 13. Positioning hole, 14. Waist-shaped hole, 15. Necked flange hole. Detailed Implementation

[0029] like Figure 1As shown in the figure, the welding tooling for a necked flange includes a welding platform 12, on which a fixed pipe 1 is provided. The fixed pipe 1 is a smooth rod, which ensures that while the sleeve 2 is pressed against the fixed pipe 1 through the positioning member 3, it is convenient for the production and processing of the fixed pipe 1. A sleeve 2 is arranged on the fixed pipe 1. A positioning hole 13 is opened on one side wall of the sleeve 2, and a positioning member 3 is arranged in the positioning hole 13. The positioning member 3 presses against the surface of the fixed pipe 1. The up and down movement or rotation of the sleeve 2 can adjust the welding height and position angle of the welded part. A connecting member 4 is fixedly installed on the other side wall of the sleeve 2, and a locking member 5 is installed on the connecting member 4. One end of the connecting member 4 is connected to a fixing member 10, and the fixing member 10 is fixedly installed on the connecting plate 6. Through the cooperation of the locking member 5 and the fixing member 10, the connecting plate 6 installed with the necked flange 7 is locked on the connecting member 4. While facilitating argon filling, the necked flange 7 can be rotated along with the fixing member 10 to achieve the angle adjustment of the necked flange 7, and then locked with the locking member 5. When the necked flange 7 is spot-welded and fixed to the straight pipe 8, it can be rotated for welding, avoiding overhead welding and reducing the welding difficulty. An argon hole 11 is opened on the connecting plate 6, and an argon gas joint 9 is arranged on the argon hole 11; the argon hole 11 is located beside the fixing member 10 and within the range of the inner diameter of the center of the flange of the necked flange 7. In this application, the necked flange 7 is installed on the connecting plate 6, and the connecting plate 6 installs the argon gas joint 9 through the argon hole 11 opened thereon. The argon hole 11 is within the range of the inner diameter of the center of the flange. During welding, argon gas is directly introduced into the pipe, and the argon gas directly fills the welding area with the straight pipe 8 through the necked flange 7. Argon filling is convenient, providing a stable protection environment for welding, preventing oxidation of the surfaces of the necked flange 7 and the straight pipe 8, and improving the welding quality.

[0030] The fixed pipe 1 is perpendicular to the welding platform 12 and is welded and fixed to the welding platform 12 at the bottom; the connecting member 4 and the straight pipe 8 are parallel to the ground plane. In this application, the fixed pipe 1 is welded and fixed to the welding platform 12, and the connecting plate 6 is installed through the connecting member 4, which is convenient for adjusting the level of the necked flange 7, better matching with the straight pipe 8, and improving the reliability of welding.

[0031] The fixing member 10 is welded and fixed at the center of the connecting plate 6. In this application, the fixing member 10 is installed at the center of the connecting plate 6. After the fixing member 10 is connected to the connecting member 4, it is convenient for the connecting plate 6 to balance the weight and make the welding stable.

[0032] As Figure 2 shown, a waist-shaped hole 14 is also opened on the connecting plate 6. The waist-shaped hole 14 passes through the necked flange hole 15 and is connected to the necked flange 7 by bolts, and the horizontal direction can be adjusted. The necked flange 7 is connected to the straight pipe 8. The specifications of the waist-shaped holes 14 on the connecting plate 6 are prepared in three groups according to the specifications of the necked flange holes 15: the connecting plate 6 with a waist-shaped hole 14 of <M20> and a set of bolts; the connecting plate 6 with a waist-shaped hole 14 of <M20 - M30> and a set of bolts; the connecting plate 6 with a waist-shaped hole 14 of <M30 - M45> and a set of bolts. Using three groups of waist-shaped holes 14 with different apertures is convenient for the connecting plate 6 to match the specifications of the necked flange holes 15.

[0033] like Figure 3 As shown, positioning hole 13 is a screw hole, and positioning element 3 is a fixing bolt. In this application, sleeve 2 is positioned on fixed pipe 1 by bolts, achieving reliable positioning and convenient adjustment of its vertical position.

[0034] like Figure 4 As shown, the connecting part 4 is the connecting screw 4, the locking part 5 is the locking nut 5, and the fixing part 10 is the fixing nut 10. The connecting plate 6 is connected and locked to the connecting part 4 by the screw and nut, which makes the connection firm, easy to disassemble and assemble, easy to manufacture and maintain, and reduces the production cost.

[0035] During operation, the fixed pipe 1 is fixedly welded to the welding platform, and the height of the sleeve 2 is adjusted by tightening the fixing bolt 3. The connecting screw 4 is welded to the sleeve 2 and connected to the fixing nut 10 on the connecting plate 6. The waist-shaped hole 14 on the connecting plate 6 and the neck flange hole 15 are connected by bolts to fix the neck flange 7 and adjust its horizontal direction. The angle of the neck flange 7 can be adjusted by rotating the fixing nut 10. After the angle is adjusted to the correct position, it is locked by tightening the locking nut 5. After spot welding to the straight pipe 8, the fixing nut 10 can be rotated for welding, avoiding overhead welding and reducing welding difficulty. The connecting plate 6 is equipped with an argon gas connector 9, which facilitates argon gas protection on the back of the straight pipe 8 during welding.

[0036] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A welding fixture with a flange neck, comprising a welding platform (12) and a fixed pipe (1) disposed on the welding platform (12), characterized in that: A sleeve (2) is provided on the fixed pipe (1). A positioning hole (13) is opened on one side wall of the sleeve (2). A positioning element (3) is provided in the positioning hole (13). The positioning element (3) abuts against the surface of the fixed pipe (1). A connector (4) is fixedly installed on the other side wall of the sleeve (2). A locking element (5) is installed on the connector (4). One end of the connector (4) is connected to a fixing element (10). The fixing element (10) is fixedly installed on the connecting plate (6). An argon gas hole (11) is opened on the connecting plate (6). The argon gas hole (11) is located on the side of the fixing element (10) within the center inner diameter range of the flange of the necked flange (7). An argon gas connector (9) is provided on the argon gas hole (11). The connecting plate (6) is connected to the necked flange (7) through a waist-shaped hole (14). The necked flange (7) is connected to the straight pipe (8).

2. The welding fixture with a flange neck according to claim 1, characterized in that: The diameter of the waist-shaped hole (14) is <20mm, or 20-30mm, or 30-45mm.

3. The welding fixture with a flange neck according to claim 1, characterized in that: The fixed tube (1) is a smooth rod.

4. The welding fixture with a flange neck according to claim 3, characterized in that: The fixed pipe (1) is perpendicular to the welding platform (12) and is welded and fixed to the welding platform (12) at the bottom; the connector (4) and the straight pipe (8) are parallel to the ground plane.

5. The welding fixture with a flange neck according to claim 1, characterized in that: The fastener (10) is welded and fixed to the center of the connecting plate (6).

6. The welding fixture with a flange neck according to claim 1, characterized in that: The positioning hole (13) is a screw hole, and the positioning element (3) is a fixing bolt.

7. The welding fixture with a flange neck according to claim 1, characterized in that: The connecting part (4) is a connecting screw, the locking part (5) is a locking nut, and the fixing part (10) is a fixing nut.

Images