Early-stage positioning device for pipeline flange welding

Abstract

The utility model relates to the field of electromechanical pipeline installation, in particular to a pipeline flange welding early-stage positioning device which comprises two sets of positioning semi-rings, the two sets of positioning semi-rings abut against each other to form a positioning ring, the center of the positioning ring is coaxially provided with a communication hole for an installation pipeline to stretch out, and the positioning semi-rings are provided with a plurality of sets of positioning holes. The multiple sets of positioning holes are aligned with mounting holes in a welding flange, the positioning semi-ring is fixedly connected with the welding flange through multiple sets of fixing bolts, pressing pieces used for pressing the side wall of a mounting pipeline are installed on one side of the positioning semi-ring, and the two sets of pressing pieces are fixedly connected through a connecting piece. After the mounting pipeline is positioned and pressed by the two groups of pressing pieces, the end part of the mounting pipeline penetrates out of the communicating hole of the positioning ring and does not penetrate out of the welding flange, and a welding worker can perform early-stage welding and fixing on the end part of the mounting pipeline and the inner wall of the welding flange, so that manual observation is replaced, and the accuracy of later-stage welding and positioning is improved.

Description

Technical Field

[0001] The utility model relates to the field of electromechanical pipeline installation, in particular to a pipeline flange welding pre-positioning device. Background Art

[0002] During the construction of various electromechanical pipelines in existing housing construction projects, it is often necessary to fix the pipelines and flanges with welding machines. During the construction process of calibrating the horizontal plane of the flange and pipeline welding, existing workers often rely on visual observation and judgment, which can easily cause the horizontal plane combination of the flange and the pipeline to not meet the design and specification requirements, causing an angle deviation between the flange and the pipeline, and the welding position may bend and break. Utility Model Content

[0003] The utility model aims to provide a pre-positioning device for pipeline flange welding, which solves the problem that workers often rely on visual observation and judgment during the construction process of calibrating the horizontal plane of flange and pipeline welding, which easily causes the degree of integration between the flange and the pipeline horizontal plane not to meet the design and specification requirements, causes angle deviation between the flange and the pipeline, and may cause bending and fracture at the welding position.

[0004] To achieve the above-mentioned purpose, the utility model provides a pre-positioning device for pipe flange welding, comprising two groups of positioning half rings, the two groups of positioning half rings are abutted to form a positioning ring, the center of the positioning ring is coaxially provided with a connecting hole for the installation pipe to extend out, the positioning half ring is provided with multiple groups of positioning holes, the multiple groups of positioning holes are aligned with the installation holes on the welding flange, the positioning half ring is fixedly connected to the welding flange by multiple groups of fixing bolts, one side of the positioning half ring is provided with a clamping piece for clamping the side wall of the installation pipe, and the two groups of clamping pieces are fixedly connected by a connecting piece;

[0005] When the installation pipe is positioned and clamped by the two sets of clamping members, the end portion thereof passes through the connecting hole of the positioning ring and does not pass through the welding flange.

[0006] As a further solution of the utility model, the clamping member is a positioning channel steel, and the near sides of the two groups of positioning channel steels are provided with arc-shaped abutting surfaces for abutting against the side walls of the installation pipeline.

[0007] As a further solution of the utility model, a plurality of groups of fixed angle plates are respectively fixed to the distal ends of the two groups of positioning channel steels, and the fixed angle plates at corresponding positions of different positioning channel steels are fixedly connected by connecting pieces.

[0008] As a further solution of the utility model, the connecting member is a connecting bolt, one end of which is fixedly connected to the end of a group of fixed angle plates, and the other end passes through the mounting hole on the corresponding other group of fixed angle plates, and a clamping nut is threadedly installed on the end.

[0009] Compared with the prior art, the utility model forms a positioning ring by designing two groups of positioning half rings to abut against each other. One side of the positioning ring is fixedly connected to the welding flange by multiple groups of fixing bolts. The other side of the positioning half ring is provided with a positioning channel steel for pressing the side wall of the installation pipe. The two groups of positioning channel steels are fixedly connected by connecting bolts. When the installation pipe is positioned and pressed, its end passes through the connecting hole of the positioning ring but does not pass through the welding flange. The welding personnel can perform preliminary welding and fix the end of the installation pipe to the inner wall of the welding flange, thereby replacing manual observation and improving the accuracy of later welding positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a schematic structural diagram of a pipeline flange welding pre-positioning device.

[0011] Figure 2 For the utility model Figure 1 Schematic diagram on the left.

[0012] Figure 3 This is a cross-sectional view of the fixed position of the installation pipeline in the utility model.

[0013] In the attached figure: 1. Positioning half ring; 2. Positioning channel steel; 3. Fixing angle plate; 4. Connecting bolts; 5. Fixing bolts; 6. Installing pipe; 7. Welding flange. DETAILED DESCRIPTION

[0014] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods.

[0015] like Figures 1 to 3 As shown, in an embodiment of the utility model, a pre-positioning device for pipe flange welding comprises two groups of positioning half rings 1, the two groups of positioning half rings 1 are abutted to form a positioning ring, the center of the positioning ring is coaxially provided with a connecting hole for the installation pipe 6 to extend out, the positioning half ring 1 is provided with multiple groups of positioning holes, the multiple groups of positioning holes are aligned with the installation holes on the welding flange 7, the positioning half ring 1 is fixedly connected to the welding flange 7 by multiple groups of fixing bolts 5, a clamping piece for clamping the side wall of the installation pipe 6 is installed on one side of the positioning half ring 1, and the two groups of clamping pieces are fixedly connected by a connecting piece;

[0016] When the installation pipe 6 is positioned and compressed by the two sets of compression members, its end passes through the connecting hole of the positioning ring and does not pass through the welding flange 7;

[0017] Specifically, when welding the welding flange 7 and the mounting pipe 6, the utility model places the mounting pipe 6 between the two sets of clamping parts, and adjusts the end of the mounting pipe 6 to pass through the connecting hole of the positioning ring. After it does not pass through the welding flange 7, the two sets of clamping parts are driven close together by multiple sets of connecting parts. After being clamped and fixed on both sides of the mounting pipe 6, the welding flange 7 is abutted against one side of the positioning half ring 1, the mounting holes on the welding flange 7 are aligned with the mounting holes on the positioning half ring 1 in sequence, and the positioning half ring 1 and the welding flange 7 are fixedly connected by multiple sets of fixing bolts 5. At this time, the coaxial positioning of the welding flange 7, the positioning ring and the mounting pipe 6 can be achieved. The welding personnel can perform preliminary welding and fix the end of the mounting pipe 6 to the inner wall of the welding flange 7. The welding method can use a multi-point welding fixing method. After the welding is completed, the connecting parts can be unlocked and the multiple sets of fixing bolts 5 can be removed, and the two sets of clamping parts and the positioning ring can be separated from the mounting pipe 6 and the welding flange 7 in sequence.

[0018] like Figure 1 and Figure 2 As shown, in the embodiment of the utility model, the pressing member is a positioning channel steel 2, and the near side of the two groups of positioning channel steels 2 is provided with an arc-shaped abutting surface for abutting the side wall of the installation pipe 6. When the positioning channel steel 2 and the installation pipe 6 are fixedly pressed, the arc-shaped abutting surface and the pressing surface of the installation pipe 6 are kept in a tight state;

[0019] At the same time, the far ends of the two groups of positioning channel steels 2 are respectively fixed with multiple groups of fixed angle plates 3, and the fixed angle plates 3 at corresponding positions of different positioning channel steels 2 are fixedly connected by connecting parts. In the utility model, two groups of fixed angle plates 3 are installed on the end face of each group of positioning channel steels 2, and the connecting parts are connecting bolts 4, one end of the connecting bolts 4 is fixedly connected to the end of one group of fixed angle plates 3, and the other end is passed through the mounting hole on the corresponding other group of fixed angle plates 3, and a clamping nut is threadedly installed on the end. The utility model preferably uses four groups of connecting screws to fix and clamp the two groups of positioning channel steels 2. Of course, in actual design, the number of fixed angle plates 3 and connecting bolts 4 can also be selected accordingly according to actual conditions.

[0020] In summary, the utility model forms a positioning ring by designing two groups of positioning half rings 1 to abut against each other. One side of the positioning ring is fixedly connected to the welding flange 7 by multiple groups of fixing bolts 5. The other side of the positioning half ring 1 is provided with a positioning channel steel 2 for pressing the side wall of the installation pipe 6. The two groups of the positioning channel steels 2 are fixedly connected by connecting bolts 4. When the installation pipe 6 is positioned and pressed, its end passes through the connecting hole of the positioning ring and does not pass through the welding flange 7. The welding personnel can perform preliminary welding and fix the end of the installation pipe 6 to the inner wall of the welding flange 7, thereby replacing manual observation and improving the accuracy of later welding positioning.

[0021] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A pipeline flange welding early positioning device, characterized in that: It comprises two groups of positioning half rings, the two groups of positioning half rings are abutted to form a positioning ring, the center of the positioning ring is coaxially provided with a connecting hole for the installation pipe to extend out, the positioning half ring is provided with multiple groups of positioning holes, the multiple groups of positioning holes are aligned with the installation holes on the welding flange, the positioning half ring is fixedly connected to the welding flange through multiple groups of fixing bolts, one side of the positioning half ring is provided with a clamping piece for clamping the side wall of the installation pipe, and the two groups of clamping pieces are fixedly connected by a connecting piece; When the installation pipe is positioned and clamped by the two sets of clamping members, the end portion thereof passes through the connecting hole of the positioning ring and does not pass through the welding flange.

2. A pipeline flange welding pre-positioning device according to claim 1, characterized in that: The clamping member is a positioning channel steel, and the near sides of the two groups of positioning channel steels are provided with arc-shaped abutting surfaces for abutting against the side wall of the installation pipeline.

3. The pipeline flange welding pre-positioning device according to claim 2 is characterized in that: A plurality of groups of fixed angle plates are respectively fixed to the distal ends of the two groups of positioning channel steels, and the fixed angle plates at corresponding positions of different positioning channel steels are fixedly connected by connecting pieces.

4. A pipeline flange welding pre-positioning device according to claim 3, characterized in that: The connecting member is a connecting bolt, one end of which is fixedly connected to the end of a set of fixed angle plates, and the other end of which passes through the mounting hole on the corresponding other set of fixed angle plates, and a clamping nut is threadedly installed on the end.

Images