A device for pipe flange welding

Abstract

The utility model discloses a kind of for pipeline flange welding auxiliary device, including rectangular frame, first flange base and second flange base;The first flange base is fixed on the one side of rectangular frame upper surface, the other side sliding of rectangular frame upper surface is equipped with second flange base, the top of first flange base and second flange base is circular and is provided with four evenly distributed four rectangular through-slots along the periphery of center of circleThe advantage of the utility model: simple operation can quickly complete the welding process between flange and pipeline, and guarantee coaxial after welding, welding time is short, and welding efficiency is high.

Description

Technical fields: This utility model relates to the field of pipeline welding technology, specifically to an auxiliary device for pipeline flange welding. Background technology: In the current production transformation process, it is often necessary to modify the original pipelines. During the modification, some abandoned pipelines are usually cut on site according to the required length. Flanges are welded to both ends of the cut pipeline. If the flanges and pipelines are not coaxial during welding, it will cause safety risks in the pipeline after installation.

[0001] The current problems are: the cut pipe end face is generally tilted, and welding is usually done by hand alignment, which is not easy to operate and takes a long time. After welding, it is impossible to guarantee that the pipe is coaxial, which is both time-consuming and labor-intensive, resulting in low work efficiency. Utility Model Content: The purpose of this invention is to provide an auxiliary device for welding pipe flanges, so as to solve the problems mentioned in the background art.

[0002] This utility model is implemented by the following technical solution: An auxiliary device for welding pipe flanges includes a rectangular frame, a first flange base, and a second flange base; the first flange base is fixed on one side of the upper surface of the rectangular frame, and the second flange base is slidably provided on the other side of the upper surface of the rectangular frame; the tops of the first flange base and the second flange base are both circular, and four evenly distributed rectangular through slots are formed around the center of the circle.

[0003] Preferably, the four bottom corners of the rectangular frame are each fixed with a support leg, and two horizontal plates are provided on one side of the rectangular frame. The horizontal plates are fixed on the corresponding support legs and protrude from the outside of the rectangular frame. The end face of one side of the horizontal plate is coplanar with the end face of the rectangular frame.

[0004] Preferably, two limiting plates are fixed parallel to each other on both sides of the lower surface of the second flange base. The two limiting plates slide against the outer surface of the rectangular frame, so that the second flange base can slide on the rectangular frame. When the two opposing surfaces of the first flange base and the second flange base are in contact, one end of the limiting plate and one end of the rectangular frame are coplanar.

[0005] Preferably, an indicator block is fixed to the lower surface of the limiting plate near the first flange base.

[0006] The advantages of this utility model are: simple operation, quick completion of the welding process between flange and pipe, ensuring coaxiality after welding, short welding time, and high welding efficiency. Attached image description: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the first flange base; Figure 3 This is a schematic diagram of the structure of the second flange base; Figure 4 This is a schematic diagram of the rectangular frame structure; Figure 5 This is a reference diagram showing the usage state of this utility model; Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0007] In the diagram: 1. Rectangular frame, 1.1. Support leg, 1.2. Horizontal plate, 2. First flange base, 3. Second flange base, 3.1. Limiting plate, 4. Indicator block, 5. Flange, 6. Pipe, 7. Measuring tape, 23. Rectangular through groove. Detailed implementation method: The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0008] Please see Figure 1-6 This utility model provides a technical solution for an auxiliary device for welding pipe flanges: An auxiliary device for welding pipe flanges includes a rectangular frame 1, a first flange base 2, and a second flange base 3; A first flange base 2 is fixed on one side of the upper surface of the rectangular frame 1, and a second flange base 3 is slidably provided on the other side of the upper surface of the rectangular frame 1. The tops of the first flange base 2 and the second flange base 3 are both circular, and four rectangular through slots 23 are evenly distributed around the center of the circle. These slots are used to fix the flange 5 with bolts to ensure that the two flanges 5 are coaxial.

[0009] The bottom four corners of the rectangular frame 1 are fixed with support legs 1.1 respectively. Two horizontal plates 1.2 are provided on one side of the rectangular frame 1. The horizontal plates 1.2 are fixed on the corresponding support legs 1.1. The horizontal plates 1.2 protrude on the outside of the rectangular frame 1. One end face of the horizontal plate 1.2 is coplanar with the end face of the rectangular frame 1, so that the measuring tape 7 can be placed on the two horizontal plates 1.2. The measuring tape 7 is used in conjunction with the indicator block 4 to read the distance between the first flange base 2 and the second flange base 3. At the same time, it can also be used to measure whether the length of the pipe 6 after cutting meets the requirements.

[0010] Two limiting plates 3.1 are fixed parallel to each other on both sides of the lower surface of the second flange base 3. The two limiting plates 3.1 slide against the outer surface of the rectangular frame 1, so that the second flange base 3 can slide on the rectangular frame 1. When the two opposing surfaces of the first flange base 2 and the second flange base 3 are in contact, one end of the limiting plate 3.1 and one end of the rectangular frame 1 are coplanar.

[0011] An indicator block 4 is fixed on the lower surface of the limit plate 3.1 near the first flange base 2. The indicator block 4 is used to indicate the moving distance of the second flange base 3 so as to cooperate and ensure that the overall length of the welded flange 5 and the pipe 6 can meet the rectification requirements.

[0012] The operating procedure of this device during use is as follows: Step 1: First, clamp the cut pipe 6 between the first flange base 2 and the second flange base 3, and use the indicator block 4 and tape measure 7 to read whether the length of the cut pipe 6 meets the requirements. After meeting the requirements, fix the two prepared flanges 5 to the first flange base 2 and the second flange base 3 respectively with bolts to ensure that the two flanges 5 are coaxial. Step 2: Prepare a wooden stick. The length of the wooden stick should be greater than the length of pipe 6, and the diameter of the wooden stick should be equal to the inner diameter of pipe 6. Insert the wooden stick into pipe 6. Step 3: Slide the second flange base 3 to increase the distance between the first flange base 2 and the second flange base 3, so that the wooden stick can be inserted between the first flange base 2 and the second flange base 3, thereby ensuring that the pipe 6, the first flange base 2 and the second flange base 3 are coaxial. Step 4: Slide one end of the pipe 6 to align with the end face of the flange 5 on the first flange base 2. After alignment, weld and fix the pipe 6. Then, pull out the wooden stick, slide the end face of the flange 5 on the second flange base 3 to align with the other end of the pipe 6, and weld again to complete the welding work between the flange 5 and the pipe 6.

[0013] 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, 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. An auxiliary device for welding pipe flanges, characterized in that: It includes a rectangular frame (1), a first flange base (2) and a second flange base (3); the first flange base (2) is fixed on one side of the upper surface of the rectangular frame (1), and the second flange base (3) is slidably provided on the other side of the upper surface of the rectangular frame (1). The tops of the first flange base (2) and the second flange base (3) are both circular and four evenly distributed rectangular through slots (23) are provided around the center of the circle.

2. The auxiliary device for welding pipe flanges according to claim 1, characterized in that: The bottom four corners of the rectangular frame (1) are respectively fixed with support legs (1.1). Two horizontal plates (1.2) are provided on one side of the rectangular frame (1). The horizontal plates (1.2) are fixed on the corresponding support legs (1.1). The horizontal plates (1.2) are exposed on the outside of the rectangular frame (1). One end face of the horizontal plate (1.2) is coplanar with the end face of the rectangular frame (1).

3. The auxiliary device for welding pipe flanges according to claim 1, characterized in that: Two limiting plates (3.1) are fixed parallel to each other on both sides of the lower surface of the second flange base (3). The two limiting plates (3.1) slide against the outer surface of the rectangular frame (1), so that the second flange base (3) can slide on the rectangular frame (1). When the two opposing surfaces of the first flange base (2) and the second flange base (3) are in contact, one end of the limiting plate (3.1) and one end of the rectangular frame (1) are coplanar.

4. The auxiliary device for welding pipe flanges according to claim 3, characterized in that: An indicator block (4) is fixed on the lower surface of the end of the limiting plate (3.1) near the first flange base (2).

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