High-frequency induction heating welding preheating device for steel pipe welding
The high-frequency induction heating welding preheating device accurately preheats the welding area of the steel pipe, solving the problems of inaccurate preheating and cooling in the existing technology, and improving welding quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-03
Smart Images
Figure CN224073551U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe welding, and in particular to a high-frequency induction heating welding preheating device for steel pipe welding. Background Technology
[0002] Preheating for steel pipe welding is an important process measure to prevent cracks in the weld and heat-affected zone. Preheating can slow down the cooling rate, reduce the hardening tendency of the weld and heat-affected zone, reduce hydrogen-induced cracking, promote hydrogen diffusion and escape, reduce the risk of cold cracking, improve welding quality, relieve welding stress, and reduce deformation and residual stress.
[0003] Most steel pipe welding involves welding steel pipes to other components. During preheating, the welding area of the steel pipe needs to be preheated to prevent cracks from forming in the weld and heat-affected zone. Moreover, the steel pipe needs to be welded as soon as possible after preheating to avoid the preheating effect disappearing when the preheated steel pipe cools down. Utility Model Content
[0004] In view of this, the present invention provides a high-frequency induction heating welding preheating device for steel pipe welding. The main technical problem to be solved is to induction heat the area of the steel pipe to be welded, so as to prevent cracks from forming in the weld and heat-affected zone.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-frequency induction heating welding preheating device for steel pipe welding, comprising a base plate, a support column fixedly connected to the upper surface of the base plate, a top plate fixedly connected to the top of the support column, a movable groove formed on the surface of the top plate, a movable block arranged inside the movable groove, a heating chamber fixedly connected to the top of the movable block, a heating cavity formed inside the heating chamber, an electromagnetic induction coil fixedly connected inside the heating cavity, and a support frame fixedly connected to the upper surface of the top plate, the number of the support frames being two, the two support frames being located on the left and right sides of the movable groove respectively, and an arc-shaped groove formed on the top of the support frame.
[0006] By adopting the above technical solution, the steel pipe is placed on the support frame during use. Then, the motor drives the lead screw to rotate, which in turn moves the moving block, allowing the heating chamber to move to the area of the steel pipe that needs to be welded. At this time, the electromagnetic induction coil is energized to precisely preheat the area of the steel pipe to be welded. After preheating, the motor continues to work to control the moving block to move, clearing the preheated area of the steel pipe. At this time, the steel pipe can be welded, allowing the steel pipe to be welded directly after preheating, avoiding the loss of preheating effect due to cooling of the preheated steel pipe.
[0007] As a further description of the above technical solution:
[0008] A motor is fixedly connected to the upper surface of the base plate, and a lead screw is fixedly connected to the output end of the motor. The moving block is installed on the outer surface of the lead screw.
[0009] By adopting the above technical solution, the motor drives the lead screw to rotate, thereby controlling the movement of the moving block on the lead screw.
[0010] As a further description of the above technical solution:
[0011] The upper surface of the base plate is fixedly connected to a track, the lead screw is located inside the track, and the end of the lead screw away from the motor is movably connected to the inner wall of the track.
[0012] By adopting the above technical solution, the bottom of the moving block is limited by the track, which facilitates the forward and backward movement of the moving block.
[0013] As a further description of the above technical solution:
[0014] An adjusting column is fixedly connected to the upper surface of the top plate, a rotating shaft is fixedly connected to the outer surface of the adjusting column, and a limit roller is movably connected to the outer surface of the rotating shaft.
[0015] By adopting the above technical solution, the adjusting column includes a fixed column and a movable column. The fixed column is installed on the top plate, and the movable column is located inside the fixed column. Pulling the movable column upward can adjust the total length of the fixed column and the movable column. In conjunction with the limiting roller, the steel pipe is limited to maintain the stability of the steel pipe. Alternatively, the movable column can be directly pulled out from the fixed column and the limiting roller can be disassembled, which facilitates the welding of the steel pipe with different components.
[0016] As a further description of the above technical solution:
[0017] The number of adjustment columns is four, and the rotating shaft is located between two adjacent adjustment columns.
[0018] By adopting the above technical solution, the installation of the rotating shaft is facilitated.
[0019] As a further description of the above technical solution:
[0020] The surface of the limiting roller is provided with a limiting groove, and the position of the limiting groove corresponds to the position of the arc-shaped groove.
[0021] By adopting the above technical solution, it is easy for the limiting roller and the support frame to cooperate in limiting the steel pipe.
[0022] By employing the above technical solution, the high-frequency induction heating welding preheating device for steel pipe welding of this utility model has at least the following beneficial effects:
[0023] 1. Compared with the prior art, this high-frequency induction heating welding preheating device for steel pipe welding places the steel pipe on a support frame. Then, the motor drives the lead screw to rotate, which in turn drives the moving block to move, so that the heating chamber can move to the area of the steel pipe to be welded. At this time, the electromagnetic induction coil is energized to accurately preheat the area of the steel pipe to be welded. After the preheating is completed, the motor continues to work to control the moving block to move, clearing the preheated area of the steel pipe. At this time, the steel pipe can be welded directly after the preheating is completed, avoiding the loss of the preheating effect due to the cooling of the preheated steel pipe.
[0024] 2. Compared with the prior art, this high-frequency induction heating welding preheating device for steel pipe welding can adjust the total length of the fixed column and the moving column by adjusting the column and pulling the moving column upward. It can also limit the steel pipe with the limiting roller to keep the steel pipe stable. Alternatively, the moving column can be directly pulled out from the fixed column and the limiting roller can be disassembled, which facilitates the welding of the steel pipe with different components. Attached Figure Description
[0025] Figure 1 This is a first-view overall structural schematic diagram of a high-frequency induction heating welding preheating device for steel pipe welding proposed in this utility model.
[0026] Figure 2 This is a second-view overall structural schematic diagram of a high-frequency induction heating welding preheating device for steel pipe welding proposed in this utility model.
[0027] Figure 3 This is a cross-sectional view of the internal structure of a high-frequency induction heating welding preheating device for steel pipe welding proposed in this utility model.
[0028] Figure 4 This utility model proposes a high-frequency induction heating welding preheating device for steel pipe welding. Figure 3 Enlarged view of the structure at point A in the middle.
[0029] Legend:
[0030] 1. Base plate; 2. Support column; 3. Top plate; 4. Moving groove; 5. Track; 6. Motor; 7. Lead screw; 8. Moving block; 9. Heating chamber; 10. Electromagnetic induction coil; 11. Support frame; 12. Arc groove; 13. Adjusting column; 14. Rotating shaft; 15. Limiting roller. Detailed Implementation
[0031] Reference Figure 1-4This utility model provides a high-frequency induction heating welding preheating device for steel pipe welding: It includes a base plate 1, a support column 2 fixedly connected to the upper surface of the base plate 1, a top plate 3 fixedly connected to the top of the support column 2, a moving groove 4 formed on the surface of the top plate 3, a moving block 8 disposed inside the moving groove 4, a motor 6 fixedly connected to the upper surface of the base plate 1, a lead screw 7 fixedly connected to the output end of the motor 6, and the moving block 8 mounted on the outer surface of the lead screw 7. The motor 6 drives the lead screw 7 to rotate, thereby controlling the movement of the moving block 8 on the lead screw 7. A track 5 is fixedly connected to the upper surface of the base plate 1, the lead screw 7 is located inside the track 5, and the end of the lead screw 7 furthest from the motor 6 is movably connected to the inner wall of the track 5. The track 5 limits the bottom of the moving block 8, facilitating its forward and backward movement. A heating chamber 9 is fixedly connected to the top of the moving block 8. The heating chamber 9 has a heating cavity inside, and an electromagnetic induction coil 10 is fixedly connected inside the heating cavity. A support frame 11 is fixedly connected to the upper surface of the top plate 3. There are two support frames 11, which are located on the left and right sides of the moving slot 4, respectively. An arc-shaped groove 12 is opened on the top of the support frame 11. When in use, the steel pipe is placed on the support frame 11. Then the motor 6 works to drive the lead screw 7 to rotate, which in turn drives the moving block 8 to move, so that the heating chamber 9 can move to the area where the steel pipe needs to be welded. At this time, the electromagnetic induction coil 10 is energized to precisely preheat the area of the steel pipe to be welded. After the preheating is completed, the motor 6 continues to work to control the moving block 8 to move, clearing the area of the steel pipe that has been preheated. At this time, the steel pipe can be welded directly after the preheating is completed, avoiding the steel pipe cooling down after preheating and the loss of the preheating effect.
[0032] An adjusting column 13 is fixedly connected to the upper surface of the top plate 3. A rotating shaft 14 is fixedly connected to the outer surface of the adjusting column 13. A limiting roller 15 is movably connected to the outer surface of the rotating shaft 14. The adjusting column 13 includes a fixed column and a moving column. The fixed column is installed on the top plate 3, and the moving column is located inside the fixed column. Pulling the moving column upward can adjust the total length of the fixed column and the moving column. It works with the limiting roller 15 to limit the steel pipe and keep the steel pipe stable. Alternatively, the moving column can be directly pulled out from the fixed column and the limiting roller 15 can be disassembled to facilitate welding of the steel pipe with different components.
[0033] There are four adjusting columns 13. The rotating shaft 14 is located between two adjacent adjusting columns 13. The surface of the limiting roller 15 is provided with a limiting groove. The position of the limiting groove corresponds to the position of the arc groove 12, so that the limiting roller 15 and the support frame 11 can cooperate to limit the steel pipe.
[0034] Working principle: When in use, the steel pipe is placed on the support frame 11. Then, the motor 6 drives the lead screw 7 to rotate, which in turn drives the moving block 8 to move, so that the heating chamber 9 can move to the area of the steel pipe to be welded. At this time, the electromagnetic induction coil 10 is energized to precisely preheat the area of the steel pipe to be welded. After the preheating is completed, the motor 6 continues to work to control the moving block 8 to move, clearing the preheated area of the steel pipe. At this time, the steel pipe can be welded, so that the steel pipe can be welded directly after the preheating is completed, avoiding the steel pipe cooling down after preheating and the loss of the preheating effect.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high-frequency induction heating welding preheating device for steel pipe welding, comprising a base plate (1), characterized in that: A support column (2) is fixedly connected to the upper surface of the base plate (1), and a top plate (3) is fixedly connected to the top of the support column (2). A moving groove (4) is opened on the surface of the top plate (3), and a moving block (8) is set inside the moving groove (4). A heating chamber (9) is fixedly connected to the top of the moving block (8), and a heating cavity is opened inside the heating chamber (9). An electromagnetic induction coil (10) is fixedly connected inside the heating cavity. A support frame (11) is fixedly connected to the upper surface of the top plate (3). There are two support frames (11), and the two support frames (11) are located on the left and right sides of the moving groove (4) respectively. An arc-shaped groove (12) is opened on the top of the support frame (11).
2. The high-frequency induction heating welding preheating device for steel pipe welding according to claim 1, characterized in that: A motor (6) is fixedly connected to the upper surface of the base plate (1), and a lead screw (7) is fixedly connected to the output end of the motor (6). The moving block (8) is installed on the outer surface of the lead screw (7).
3. The high-frequency induction heating welding preheating device for steel pipe welding according to claim 2, characterized in that: The upper surface of the base plate (1) is fixedly connected to the track (5), the lead screw (7) is located inside the track (5), and the end of the lead screw (7) away from the motor (6) is movably connected to the inner wall of the track (5).
4. The high-frequency induction heating welding preheating device for steel pipe welding according to claim 1, characterized in that: An adjusting column (13) is fixedly connected to the upper surface of the top plate (3), and a rotating shaft (14) is fixedly connected to the outer surface of the adjusting column (13). A limit roller (15) is movably connected to the outer surface of the rotating shaft (14).
5. The high-frequency induction heating welding preheating device for steel pipe welding according to claim 4, characterized in that: The number of the adjusting columns (13) is four, and the rotating shaft (14) is located between two adjacent adjusting columns (13).
6. The high-frequency induction heating welding preheating device for steel pipe welding according to claim 4, characterized in that: The surface of the limiting roller (15) is provided with a limiting groove, the position of which corresponds to the position of the arc groove (12).