Pipe flange welding auxiliary device

Abstract

The utility model relates to a kind of flange installation technical field, specifically to a kind of pipeline flange welding auxiliary device. Including slide, two sliding tubes are slidably arranged on slide, sliding tube can slide along the length direction of slide, the end of sliding tube towards flange is conical tip, the lower end of the part of slide between two sliding tubes is elastically slidably connected with magnetic seat, the sliding direction of magnetic seat is perpendicular to the sliding direction of sliding tube, the end surface opposite to magnetic seat and flange is parallel, the upper end of slide is magnetically adsorbed with level. The utility model is in horizontal eye alignment and vertical eye alignment process, device is inserted into flange mounting hole by sliding tube conical tip fast, and cooperate with magnetic seat adsorption fixed, without manual level repeatedly adjusting hole position, when not hand-held level and make level and the adjacent two mounting holes on flange, while simplifying operation process, shorten group time, improve welding efficiency as a whole.

Description

Technical Field

[0001] This utility model relates to the field of flange installation technology, specifically to a pipe flange welding auxiliary device. Background Technology

[0002] During the maintenance, expansion, or renovation of pipeline systems, flanges, as critical connecting components, directly affect the sealing performance, safety, and service life of the entire system due to the accuracy of their mounting holes alignment. Especially when adding straight pipe sections or bends, the new flanges must be precisely aligned with the mounting holes of existing pipe flanges to ensure bolts can be smoothly inserted and reliably connected. However, traditional methods rely on manual operation: workers must hold a spirit level and repeatedly adjust the flange position to align adjacent mounting holes with the spirit level reference, then visually check the bubble level to correct the flange's horizontal or vertical alignment (commonly known as "leveling eye" or "vertical eye" alignment). This operation is not only time-consuming, labor-intensive, and inefficient, but also highly susceptible to human error in confined spaces or high-altitude work environments, leading to flange misalignment, post-weld seal failure, or increased rework rates. Furthermore, in complex scenarios such as bend installations, flanges at both ends need to be aligned with pipes in different directions simultaneously, further exacerbating the difficulty and error risk of manual alignment, significantly slowing down maintenance progress and increasing project costs. Therefore, a dedicated auxiliary device is needed to quickly and accurately fix the flange mounting hole reference and integrate a level detection function to simplify the assembly process and improve welding quality and work efficiency. Utility Model Content

[0003] The main purpose of this utility model is to provide a pipe flange welding auxiliary device that facilitates the alignment of the horizontal and vertical flange eyes.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: A pipe flange welding auxiliary device includes a slide bar with two sliding tubes slidably mounted on it. The sliding tubes can slide along the length of the slide bar, and the end of the sliding tube facing the flange has a tapered tip. A magnetic seat is elastically slidably engaged at the lower end of the slide bar between the two sliding tubes. The sliding direction of the magnetic seat is perpendicular to the sliding direction of the sliding tubes, and the end face of the magnetic seat opposite to the flange is parallel. A spirit level is magnetically attracted to the upper end of the slide bar.

[0005] Specifically, the sliding direction of the sliding tube on the slider is perpendicular to the axial direction of the sliding tube.

[0006] Specifically, sliding damping is provided between the sliding tube and the slide bar.

[0007] Specifically, a slider is fixed to the upper end of the magnetic base, and the slider is slidably engaged in the groove at the lower end of the slide bar. A first fixing plate is fixed to the upper end of the slider, and a second fixing plate is fixed to the upper end of the slide bar. The first fixing plate and the second fixing plate are correspondingly arranged, and the first fixing plate and the second fixing plate are connected by a spring.

[0008] Specifically, the slider is a dovetail block, and the groove is a dovetail groove adapted to the dovetail block.

[0009] Specifically, a magnet is embedded and fixed in the lower end of the level, and the slider is a steel strip. The level is magnetically attracted to the slider by the magnet.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. During the horizontal and vertical alignment processes, the device quickly inserts the tapered tip of the sliding tube into the flange mounting hole and is fixed by magnetic adsorption. This eliminates the need for manual adjustment of the hole position by holding a level and ensuring that the level is aligned with two adjacent mounting holes on the flange. This simplifies the operation process, shortens the assembly time, and improves the overall welding efficiency.

[0011] 2. The device utilizes an elastic sliding snap-fit ​​structure and a magnetic seat for adsorption, ensuring that the slider applies continuous compressive force to the sliding tube, causing the conical tip to be tightly inserted into the flange mounting hole. Simultaneously, the magnetic seat provides a stable contact surface facing the flange's flat end face, preventing displacement and ensuring precise flange positioning during welding, reducing the risk of misalignment and improving welding quality.

[0012] 3. The spirit level is directly attached to the upper end of the slide bar by a magnet, integrating a level detection function. Users only need to observe the spirit level column to determine the level status of the flange. The sliding damping design between the sliding tube and the slide bar makes it easy to position the sliding tube on the slide bar and facilitates the accurate insertion of the tapered tip into the mounting hole, reducing the difficulty of operation. It is especially suitable for narrow or complex environments.

[0013] 4. When aligning with a horizontal eye, adjust the sliding tube to the adjacent hole position. When aligning with a vertical eye, ensure that the flange part between the sliding tubes retains a specific hole position. This can cover a variety of flange alignment scenarios without changing tools, enhancing the versatility and practicality of the device.

[0014] 5. By replacing manual operation with an automated fixing mechanism, alignment errors caused by visual deviation or hand tremors are effectively reduced, subjective interference is minimized, and the consistency of flange and pipe assembly is ensured, thereby improving the overall reliability and safety of welding. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of using this device to perform horizontal eye alignment of the flange.

[0017] Figure 3 This is a front view of the flange when using this device for horizontal alignment.

[0018] Figure 4 This is a front view of the flange when using this device for vertical alignment.

[0019] The components in the attached diagram are named as follows: 1. Slider, 2. Sliding tube, 3. Magnetic base, 4. Slider, 5. First fixing plate, 6. Second fixing plate, 7. Spring, 8. Flange, 9. Level. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1: Refer to Figures 1-4 As shown, a pipe flange welding auxiliary device includes a slide bar 1, on which two sliding tubes 2 are slidably disposed. The sliding direction of the sliding tubes 2 on the slide bar 1 is perpendicular to the axial direction of the sliding tubes 2. The sliding tubes 2 can slide along the length direction of the slide bar 1, and the end of the sliding tubes 2 facing the flange 8 has a tapered tip.

[0022] A magnetic seat 3 is elastically and slidably engaged at the lower end of the slide bar 1 between the two sliding tubes 2. The sliding direction of the magnetic seat 3 is perpendicular to the sliding direction of the sliding tube 2. Specifically, a slider 4 is fixed to the upper end of the magnetic seat 3. The slider 4 is slidably engaged in the groove at the lower end of the slide bar 1. A first fixing plate 5 is fixed to the upper end of the slider 4, and a second fixing plate 6 is fixed to the upper end of the slide bar 1. The first fixing plate 5 and the second fixing plate 6 are correspondingly arranged and connected by a spring 7. The slider 4 is a dovetail block, and the groove is a dovetail groove adapted to the dovetail block.

[0023] The magnetic base 3 is parallel to the end face opposite to the flange 8, and a spirit level 9 is magnetically attracted to the upper end of the slide bar 1. Specifically, a magnet is embedded and fixed in the lower end of the spirit level 9, and the slide bar 1 is a steel strip. The spirit level 9 is magnetically attracted to the slide bar 1 by the magnet.

[0024] like Figure 2 and Figure 3As shown, when the flange 8 needs to be leveled, adjust the position of the sliding tube 2 on the slide bar 1 so that the tapered tips of the two sliding tubes 2 are respectively inserted into the two adjacent mounting holes on the flange 8. Then rotate the knob of the magnetic seat 3 so that the magnetic seat 3 is magnetically attracted to the end face of the flange 8 away from the pipe. After the magnetic seat 3 magnetically attracts the flange 8, the end face of the magnetic seat 3 facing the flange 8 contacts the end face of the flange 8 away from the pipe. At the same time, the magnetic seat 3 presses the slide bar 1 through the first fixing plate 5, the spring 7 and the second fixing plate 6, so that the tapered tips of the two sliding tubes 2 are tightly inserted into the two mounting holes of the flange 8, and then the spirit level 9 is magnetically attracted to the upper end of the slide bar 1.

[0025] When welding the pipe to flange 8, it is only necessary to observe the level of the spirit level 9. After determining the misalignment between flange 8 and pipe, and ensuring the spirit level 9 is level, flange 8 can be welded to pipe. During the welding process, it is not necessary to hold the spirit level 9 and align it with two adjacent mounting holes on flange 8, thus improving the efficiency of welding flange 8 to pipe.

[0026] like Figure 4 As shown, when flange 8 needs to be aligned vertically, the tips of the two sliding tubes 2 are respectively inserted into the two mounting holes on flange 8, and the upper part of flange 8 between the two sliding tubes 2 has a mounting hole. Then, the knob of magnetic seat 3 is rotated, so that magnetic seat 3 is magnetically attracted to the end face of flange 8 on the side away from the pipe. After magnetic seat 3 magnetically attracts flange 8, the end face of magnetic seat 3 facing flange 8 contacts the end face of flange 8 on the side away from the pipe. At the same time, magnetic seat 3 presses slide bar 1 through first fixing plate 5, spring 7 and second fixing plate 6. Slide bar 1 makes the conical tips of the two sliding tubes 2 tightly inserted into the two mounting holes of flange 8, and then the spirit level 9 is magnetically attracted to the upper end of slide bar 1.

[0027] After installation, the magnetic base 3 tightly adheres to the flange 8. At this time, the slide bar 1 is pressed by the magnetic base 3 through the spring 7, the first fixing plate 5, and the second fixing plate 6. Simultaneously, the tapered tips of the two sliding tubes 2 are tightly inserted into the mounting holes of the flange 8, forming two-point rigid positioning.

[0028] The magnetic seat 3 and the flange 8 are fitted together, forcing the axis of the slide bar 1 to be parallel to the end face of the flange 8; while the tapered tip of the sliding tube 2 is inserted into the mounting hole of the flange 8, further constraining the slide bar 1 from rotating around its own axis. Figure 3 and Figure 4 This dual constraint ensures that the natural state of the slide bar 1 is strictly aligned with the reference surface of the flange 8, providing a deviation-free installation base for the level 9.

[0029] The first fixing plate 5 and the second fixing plate 6 connected by spring 7 continuously compress slide bar 1, forcing the tapered tip of slide tube 2 tightly inserted into the mounting hole of flange 8. This preload eliminates the radial gap between slide tube 2 and the inner wall of mounting hole of flange 8, as well as the assembly gap between slide bar 1 and slide tube 2, avoiding micro-movement of slide bar 1 caused by vibration or external impact during welding. The preload of spring 7 can compensate for displacement in real time, ensuring that the tapered surface of the tapered tip of slide tube is always in close contact with the mounting hole wall of flange 8, maintaining the horizontal reference of slide bar 1 unchanged.

[0030] After installation, this device forms three key contact points. The tapered tips of the two sliding tubes 2 are inserted into the two mounting holes of the flange 8, respectively, constraining the Y-axis translation and Z-axis rotation of the slide bar. The magnetic seat 3 adheres to the end face of the flange 8, constraining the X-axis rotation and Z-axis translation of the slide bar 1. The three key contact points form a stable non-collinear plane and are coupled as a whole by the preload of the spring 7, completely preventing unilateral warping or tilting of the slide bar 1.

[0031] The tapered tip of the sliding tube 2 can be adapted to different flange mounting hole diameters within a certain range.

[0032] Spring 7 allows magnetic seat 3 to float slightly in the Z-axis direction. If there is local unevenness on the end face of flange 8, such as welding residual protrusions, magnetic seat 3 can adaptively adjust the contact pressure to ensure that the tapered tip of sliding tube 2 is tightly inserted into the mounting hole of flange 8, thus ensuring the horizontal state of slide bar 1.

[0033] Example 2: Based on Example 1, a sliding damping is provided between the sliding tube 2 and the slide bar 1. After the sliding tube 2 slides on the slide bar 1, due to the sliding damping between the sliding tube 2 and the slide bar 1, the sliding tube 2 can be positioned on the slide bar 1, thus facilitating the insertion of the tapered tip of the sliding tube 2 into the mounting hole on the flange 8.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 pipe flange welding auxiliary device, comprising a slide bar (1), characterized in that, Two sliding tubes (2) are slidably arranged on the slide bar (1). The sliding tubes (2) can slide along the length of the slide bar (1). The end of the sliding tube (2) facing the flange (8) is a tapered tip. The lower end of the slide bar (1) between the two sliding tubes (2) is elastically slidably engaged with a magnetic seat (3). The sliding direction of the magnetic seat (3) is perpendicular to the sliding direction of the sliding tube (2). The end face of the magnetic seat (3) is parallel to the flange (8). A level (9) is magnetically attracted to the upper end of the slide bar (1).

2. The pipe flange welding auxiliary device according to claim 1, characterized in that, The sliding direction of the sliding tube (2) on the slide bar (1) is perpendicular to the axial direction of the sliding tube (2).

3. The pipe flange welding auxiliary device according to claim 1, characterized in that, Sliding damping is provided between the sliding tube (2) and the slide bar (1).

4. The pipe flange welding auxiliary device according to claim 1, characterized in that, The upper end of the magnetic base (3) is fixed with a slider (4), which slides and engages in the groove at the lower end of the slide bar (1). The upper end of the slider (4) is fixed with a first fixing plate (5), and the upper end of the slide bar (1) is fixed with a second fixing plate (6). The first fixing plate (5) and the second fixing plate (6) are arranged correspondingly, and the first fixing plate (5) and the second fixing plate (6) are connected by a spring (7).

5. The pipe flange welding auxiliary device according to claim 4, characterized in that, The slider (4) is a dovetail block, and the groove is a dovetail groove adapted to the dovetail block.

6. The pipe flange welding auxiliary device according to claim 1, characterized in that, A magnet is embedded in the lower end of the level ruler (9), and the slider (1) is a steel bar. The level ruler (9) magnetically attracts the slider (1) through the magnet.

Images