Auxiliary welding positioning device for pipeline flange

Abstract

The utility model relates to the technical field of pipeline machining, in particular to an auxiliary welding positioning device for a pipeline flange. Comprising a V-shaped positioning frame, a length adjusting rod assembly and a horizontal control assembly, the V-shaped positioning frame is arranged at the top of the length adjusting rod assembly, the length adjusting rod assembly is arranged along the V-shaped positioning frame according to the center line, the top of the length adjusting rod assembly penetrates through the V-shaped positioning frame, and a positioning nut is arranged on the V-shaped positioning frame. The length adjusting rod assembly is connected with the V-shaped positioning frame through the positioning nut, and the horizontal control assembly is arranged on the V-shaped positioning frame. The device not only can ensure the alignment positioning accuracy of the flange and the pipeline, but also can improve the installation quality and the appearance quality of the pipeline. The device is mainly applied to auxiliary welding and positioning of pipeline flanges.

Description

Technical Field

[0001] This utility model relates to the field of pipeline processing technology, and more specifically, to a pipeline flange auxiliary welding positioning device. Background Technology

[0002] In flange welding connections for building piping projects, the alignment accuracy between the flange and the pipe is a core factor affecting the overall installation quality and appearance of the piping system. Standard operating procedures require precise alignment of the flange's center axis with the pipe's center axis, while also strictly controlling the alignment gap. However, the following quality defects are commonly found in this process:

[0003] Center axis deviation: The pipe and flange are not coaxial, causing excessive misalignment.

[0004] Uneven circumferential clearance: Uneven distribution of weld gaps causes flange levelness to exceed limits, ultimately resulting in subsequent pipe connections failing to maintain overall horizontal or vertical consistency with preceding pipes. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, this utility model provides an auxiliary welding positioning device for pipe flanges. This device can not only ensure the accuracy of the alignment and positioning between the flange and the pipe, but also improve the installation quality and appearance of the pipe.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A pipe flange auxiliary welding positioning device includes a V-shaped positioning frame, a length adjusting rod assembly, and a horizontal control assembly. The V-shaped positioning frame is disposed on top of the length adjusting rod assembly, which is arranged along the centerline of the V-shaped positioning frame. The top of the length adjusting rod assembly passes through the V-shaped positioning frame. A positioning nut is disposed on the V-shaped positioning frame. The length adjusting rod assembly is connected to the V-shaped positioning frame via the positioning nut. The horizontal control assembly is disposed on the V-shaped positioning frame.

[0008] The length control rod assembly includes an upper adjusting rod, a lower adjusting rod, and an adjusting connecting tube. The upper and lower adjusting rods are respectively disposed at the upper and lower ends of the adjusting connecting tube. The top of the upper adjusting rod extends out of the V-shaped positioning bracket and is connected to the positioning nut.

[0009] Both the upper and lower adjusting rods are threaded screws, and the adjusting connecting pipe is provided with internal threads. Both ends of the adjusting connecting pipe are threadedly connected to the upper and lower adjusting rods, respectively.

[0010] The level control component includes a level ruler and a level bubble meter. The level ruler is fixedly mounted on the V-shaped positioning frame and is perpendicular to the centerline of the V-shaped positioning frame. The level bubble meter is fixedly mounted in the middle of the level ruler.

[0011] The V-shaped positioning frame is provided with a number of spaced slots, which are symmetrically opened on both side plates of the V-shaped positioning frame.

[0012] The spacer groove is provided with a weld control strip, the thickness of which is matched with the width of the spacer groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] By integrating a spirit level and a bubble level, the V-shaped positioning frame can be intuitively and accurately ensured to be level, with both edges at the same height. This effectively eliminates errors from manual visual inspection, significantly improves the horizontal accuracy of flange installation, and provides a reliable reference surface for subsequent welding. The length adjustment rod assembly uses a threaded screw and adjusting connecting pipe structure, allowing for stepless adjustment of the overall length of the assembly by rotation. This quickly adapts to pipes of different inner diameters without requiring the replacement of special parts, greatly expanding the applicability of the device. Multiple sets of slots with varying widths on the V-shaped positioning frame, combined with an insertable weld control strip, allow for precise setting and maintenance of a uniform gap between the flange and the pipe port according to the pipe diameter and welding process requirements. This ensures weld quality and improves the adaptability and flexibility of welding pipes of different specifications. This device is easy to operate, significantly reducing reliance on operator skill levels, shortening positioning and adjustment time, and improving the efficiency of on-site welding operations. Attached Figure Description

[0015] Figure 1 This is a front view of the present utility model;

[0016] Figure 2 This is a side view of the present invention;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 This is a side view of the present invention.

[0019] Figure 5 This is a front view of the present invention;

[0020] In the diagram: 1 is the V-shaped positioning frame, 2 is the positioning nut, 3 is the upper adjusting rod, 4 is the lower adjusting rod, 5 is the adjusting connecting pipe, 6 is the spirit level, 7 is the level bubble meter, 8 is the interval groove, and 9 is the weld control strip. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0023] like Figures 1 to 5 As shown, a pipe flange auxiliary welding positioning device includes a V-shaped positioning frame 1, a length adjusting rod assembly, and a horizontal control assembly. The V-shaped positioning frame 1 is located on top of the length adjusting rod assembly, which is arranged along the centerline of the V-shaped positioning frame 1. The top of the length adjusting rod assembly passes through the V-shaped positioning frame 1. A positioning nut 2 is provided on the V-shaped positioning frame 1, and the length adjusting rod assembly is connected to the V-shaped positioning frame 1 through the positioning nut 2. The horizontal control assembly is located on the V-shaped positioning frame 1.

[0024] The positioning device is placed in the pipe, and the V-shaped positioning frame 1 is kept in a horizontal position by the horizontal control component. The two sides of the V-shaped positioning frame 1 are at the same horizontal height, and the two sides of the V-shaped positioning frame 1 and the bottom of the length adjustment rod assembly are attached to the inner wall of the pipe being processed. The V-shaped positioning frame 1 extends out of the pipe and the flange is completely positioned and welded through the V-shaped positioning frame 1.

[0025] Preferably, the length control rod assembly includes an upper adjusting rod 3, a lower adjusting rod 4, and an adjusting connecting tube 5. The upper adjusting rod 3 and the lower adjusting rod 4 are respectively disposed at the upper and lower ends of the adjusting connecting tube 5. The top of the upper adjusting rod 3 extends out of the V-shaped positioning bracket 1 and is connected to the positioning nut 2. The extension length of the upper adjusting rod 3 can be adjusted by the positioning nut 2.

[0026] Preferably, both the upper adjusting rod 3 and the lower adjusting rod 4 are threaded screws, and the adjusting connecting pipe 5 has internal threads. Both ends of the adjusting connecting pipe 5 are threadedly connected to the upper adjusting rod 3 and the lower adjusting rod 4, respectively. By rotating the upper adjusting rod 3 and the lower adjusting rod 4, the height of the length control component can be adjusted to accommodate pipes with different inner diameters.

[0027] Preferably, the level control component includes a level ruler 6 and a level bubble meter 7. The level ruler 6 is fixedly mounted on the V-shaped positioning frame 1 and is perpendicular to the center line of the V-shaped positioning frame 1. The level bubble meter 7 is fixedly mounted in the middle of the level ruler 6.

[0028] Preferably, the V-shaped positioning frame 1 has several interval slots 8, which are symmetrically opened on both side plates of the V-shaped positioning frame 1. Multiple sets of interval slots 8 with different widths are opened to adapt to the processing requirements of different welding intervals.

[0029] Preferably, a weld control strip 9 is movably inserted into the gap 8, and the thickness of the weld control strip 9 is matched with the width of the gap 8. After the weld control strip 9 is inserted into the gap 8, it can separate the flange from the pipe to be welded, forming a uniform gap. The width of the gap should be selected according to the diameter of the pipe to be welded, which is beneficial to improving the positioning welding quality and installation accuracy of the flange and the pipe.

[0030] In use, place the positioning device into the pipe to be welded, adjust the extension length of the upper adjusting rod 3 and the lower adjusting rod 4 so that the bottom end of the lower adjusting rod 4 and the two side edges of the V-shaped positioning frame 1 are in contact with the inner wall of the pipe, observe the horizontal state of the bubble level 7, adjust the two side edges of the V-shaped positioning frame 1 to be at the same horizontal height, set the spacer groove 8 to fit the pipe opening, insert the corresponding weld control strip 9 into the spacer groove 8, hang the flange on the V-shaped positioning frame 1, position it to fit the weld control strip 9, and complete the welding process between the flange and the pipe.

[0031] The above description only details the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A pipe flange auxiliary welding positioning device, characterized in that: The device includes a V-shaped positioning frame (1), a length adjusting rod assembly, and a horizontal control assembly. The V-shaped positioning frame (1) is located on top of the length adjusting rod assembly. The length adjusting rod assembly is located along the center line of the V-shaped positioning frame (1). The top of the length adjusting rod assembly passes through the V-shaped positioning frame (1). A positioning nut (2) is provided on the V-shaped positioning frame (1). The length adjusting rod assembly is connected to the V-shaped positioning frame (1) through the positioning nut (2). The horizontal control assembly is located on the V-shaped positioning frame (1).

2. The auxiliary welding positioning device for pipe flanges according to claim 1, characterized in that: The length adjustment rod assembly includes an upper adjustment rod (3), a lower adjustment rod (4), and an adjustment connecting tube (5). The upper adjustment rod (3) and the lower adjustment rod (4) are respectively disposed at the upper and lower ends of the adjustment connecting tube (5). The top of the upper adjustment rod (3) extends out of the V-shaped positioning frame (1) and is connected to the positioning nut (2).

3. The auxiliary welding positioning device for pipe flanges according to claim 2, characterized in that: Both the upper adjusting rod (3) and the lower adjusting rod (4) are threaded screws. The adjusting connecting pipe (5) is provided with internal threads. Both ends of the adjusting connecting pipe (5) are threadedly connected to the upper adjusting rod (3) and the lower adjusting rod (4) respectively.

4. The auxiliary welding positioning device for pipe flanges according to claim 1, characterized in that: The level control component includes a level (6) and a level bubble meter (7). The level (6) is fixedly mounted on the V-shaped positioning frame (1) and is perpendicular to the center line of the V-shaped positioning frame (1). The level bubble meter (7) is fixedly mounted in the middle of the level (6).

5. The auxiliary welding positioning device for pipe flanges according to claim 1, characterized in that: The V-shaped positioning frame (1) is provided with several interval slots (8), which are symmetrically opened on both sides of the V-shaped positioning frame (1).

6. The auxiliary welding positioning device for pipe flanges according to claim 5, characterized in that: A weld control strip (9) is movably inserted into the spacer groove (8), and the thickness of the weld control strip (9) is matched with the width of the spacer groove (8).

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