Tool for assembling and disassembling gaskets for welding small diameter pipes

Abstract

The utility model relates to pipeline welding technical field, concretely is a kind of installation and dismounting tool of gasket for small-bore pipeline welding, including push-pull rod, gasket support, elastic pressure jaw, nut, pole support five parts.The push-pull rod is set into long rod, one end is set into slender thread section, for through the nut installation gasket support and elastic pressure jaw;Gasket support's outer annular surface place installs gasket, inside recessed surface place installs elastic pressure jaw;Elastic pressure jaw with gasket support cooperation, for clamping and fixing gasket.The outer side four supporting legs of pole support stamping bend into clamping mouth, inner hole stamping bend out four compression sheet.The installation and dismounting tool after welding is through knocking push-pull rod, through gasket support impact gasket, can make gasket and weld completely separate, facilitate the installation and dismounting tool and gasket are pulled out.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, specifically to a tool for installing and removing gaskets for welding small-diameter pipelines. Background Technology

[0002] To ensure the quality of the weld on the inner wall during pipeline welding, a gasket can be installed to seal the weld bevel, constrain the shape of the weld, and prevent defects such as excessive weld beads. Large-diameter pipeline welding typically employs a combination of a complex, large-scale buttressing device and a copper gasket, while small-diameter pipeline welding generally uses a simpler gasket device.

[0003] Currently, some gaskets and devices for welding small-diameter pipes have been developed. These devices typically use gaskets made of either copper alloys or ceramics. Both copper alloy and ceramic gaskets tend to adhere to the weld seam after welding, requiring applied force to separate them. However, most of these gasket devices lack components or functions for separating the gasket from the weld seam under load. Furthermore, these gasket devices often have numerous components, resulting in high manufacturing costs and limiting their widespread application. Summary of the Invention

[0004] In view of the technical problems mentioned in the background above, this utility model provides a tool for installing and removing gaskets for welding small-diameter pipes. After welding, the gasket can be loaded to completely separate it from the weld, and the tool has fewer parts.

[0005] Technical solution: A tool for installing and removing gaskets for welding small-diameter pipes, comprising five parts: a push-pull rod, a gasket bracket, a flexible clamp, a nut, and a rod bracket; The push-pull rod is configured as a long rod, with a length greater than that of the steel pipe; one end of the push-pull rod is configured as a slender threaded section for mounting the pad bracket and the elastic pressure claw through the nut; the other end of the push-pull rod is configured as a thickened ball head; The pad bracket passes through the threaded section of the push-pull rod, with its maximum outer edge 2-3 mm from the inner wall of the steel pipe; a pad is installed on the outer ring surface of the pad bracket, and the elastic pressure claw is installed on the inner concave surface. The elastic pressure claw is stamped into a disc shape from a thin steel plate, and the maximum outer edge of the formed claw is 2-3 mm away from the inner wall of the steel pipe. The elastic pressure claw is fixed to the threaded section of the push-pull rod by the nut and cooperates with the pad bracket to clamp and fix the pad. The rod support is cut from a thin steel plate, with the four outer legs punched and bent into clamping openings for clamping and positioning at one end of the steel pipe; the inner hole of the rod support is punched and bent into four clamping plates for clamping the push-pull rod and preventing it from sliding freely.

[0006] Furthermore, to facilitate the installation of segmented gaskets, the elastic pressure claws are slit to form a segmented shape, with the number of slits being the same as the number of segmented gaskets, for installing the segmented gaskets one by one.

[0007] Furthermore, to ensure accurate positioning of the push-pull rod, a digital scale is provided at one end of the ball head of the push-pull rod. By comparing the digital scale with the corresponding position of the clamping plate of the rod bracket, it can be determined whether the installation position of the shim at the threaded section of the push-pull rod has shifted.

[0008] Compared with existing background technologies, the above-described at least one technical solution adopted in one or more embodiments of this specification can achieve the following beneficial effects: First, after welding, the assembly / disassembly tool can be completely separated from the weld by striking the push-pull rod and impacting the pad through the pad bracket, making it easy to pull out the assembly / disassembly tool and the pad; second, the assembly / disassembly tool has only five parts, with fewer components and lower manufacturing costs.

[0009] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the present invention.

[0010] Other features and aspects of the present invention will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the specification, serve to explain the technical solutions of the present invention.

[0012] Figure 1 This is a cross-sectional view of the assembly / disassembly tool; Figure 2 This is a view of the push-pull rod; Figure 3 This is a perspective view of the elastic pressure claw; Figure 4 This is a perspective view of the rod support; Figure 5 A cross-sectional view of the push-pull rod and rod bracket installed on the steel pipe to be welded; Figure 6 A cross-sectional view showing the pad, the pad support, and the resilient pressure claw installed onto the threaded section of the push-pull rod; Figure 7 A cross-sectional view of the steel pipe to be welded, equipped with the aforementioned assembly and disassembly tools, after being connected to the pipeline with a gasket to seal the weld bevel. Figure 8 This is a cross-sectional view showing the push-pull rod being struck after welding to separate the liner from the weld.

[0013] In the diagram: 1-Push-pull rod, 101-Threaded section, 102-Ball head, 103-Digital scale; 2-Pad bracket; 3-Elastic pressure claw; 4-Nut; 5-Rod bracket, 501-Clamping port, 502-Pressure plate; 6-Pad; 7-Steel pipe; 8-Pipeline; 9-Bevel to be welded; 10-Weld. Detailed Implementation

[0014] The various exemplary embodiments, features, and methods of use of this utility model will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements with the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0015] Furthermore, to better illustrate this utility model, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this utility model can be implemented without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this utility model.

[0016] like Figures 1-8 As shown, the tool for installing and removing gaskets for welding small-diameter pipes includes five parts: a push-pull rod 1, a gasket bracket 2, an elastic pressure claw 3, a nut 4, and a rod bracket 5.

[0017] like Figure 2 As shown, the push-pull rod 1 is configured as a long rod, with a length greater than that of the steel pipe 7; one end of the push-pull rod 1 is configured as a slender threaded section 101, used to install the pad bracket 2 and the elastic pressure claw 3 through the nut 4; the other end of the push-pull rod 1 is configured as a thickened ball head 102; in order to ensure accurate positioning of the push-pull rod 1, a digital scale 103 is provided at one end of the ball head 102 of the push-pull rod 1, and the installation position of the pad 6 at the threaded section 101 of the push-pull rod 1 is determined by the corresponding position of the digital scale 103 and the clamping plate 502 of the rod bracket 5.

[0018] like Figure 1 As shown, the pad bracket 2 passes through the threaded section 101 of the push-pull rod 1, with the maximum outer edge 2~3mm away from the inner wall of the steel pipe 7; the pad 6 is installed on the outer ring surface of the pad bracket 2, and the elastic pressure claw 3 is installed on the inner concave surface.

[0019] like Figure 3As shown, the elastic pressure claw 3 is stamped from a thin steel plate into a disc shape, and the maximum outer edge of the formed disc is 2-3 mm away from the inner wall of the steel pipe 7. The elastic pressure claw 3 is fixed to the threaded section 101 of the push-pull rod 1 by the nut 4, and cooperates with the pad bracket 2 to clamp and fix the pad 6. In order to facilitate the installation of the segmented pad 6, the elastic pressure claw 3 is formed into a segmented shape by cutting slits. The number of slits is the same as the number of segmented pads 6, which is used to install the segmented pads 6 one by one.

[0020] like Figure 4 As shown, the rod support 5 is cut from a thin steel plate, wherein the four outer legs are punched and bent into clamping openings 501 for clamping and positioning at one end of the steel pipe 7; the inner hole of the rod support 5 is punched and bent into four clamping plates 502 for clamping the push-pull rod 1 and preventing the push-pull rod 1 from sliding freely.

[0021] like Figures 5-8 As shown, when the gasket 6 used for pipe welding is an integral annular gasket of copper alloy, this is a specific implementation example 1 of the present invention: First, align the clamping port 501 of the rod bracket 5 with one end of the steel pipe 7 to be welded and insert it for positioning; then insert the push-pull rod 1 into the rod bracket 5, with the threaded section 101 of the push-pull rod 1 at the other end of the steel pipe 7, such as... Figure 5 As shown.

[0022] Then, the pad bracket 2, the copper alloy annular pad 6, and the elastic pressure claw 3 are sequentially installed into the threaded section 101 of the push-pull rod 1 and tightened with the nut 4; push and pull the push-pull rod 1, adjust the middle of the pad 6 to be at the end face of the steel pipe 7, and remember the corresponding position of the numerical scale 103 on the push-pull rod 1 and the pressure plate 502 of the rod bracket 5, such as... Figure 6 As shown.

[0023] Next, connect the steel pipe 7 to be welded to the pipe 8. During the connection process, hold the push-pull rod 1 by hand to prevent it from moving. After aligning the weld bevel 9, check whether the original corresponding position of the numerical scale 103 on the push-pull rod 1 and the clamping plate 502 of the rod support 5 has changed. If the original corresponding position has changed, adjust the push-pull rod 1 back to the original corresponding position to ensure that the gasket 6 seals the weld bevel 9 after connection. Figure 7 As shown; then welding is carried out.

[0024] Finally, after welding, the outer ball end of the push-pull rod 1 is struck, causing the pad 6 to be impacted by the pad bracket 2, thus completely separating the pad 6 from the weld 10. Figure 8 As shown; remove the assembly / disassembly tools and gaskets.

[0025] like Figures 5-8As shown, when the gasket 6 used for pipe welding is a segmented block gasket made of ceramic material, this is a specific implementation example 2 of the present invention: First, align the clamping port 501 of the rod bracket 5 with one end of the steel pipe 7 to be welded and insert it for positioning; then insert the push-pull rod 1 into the rod bracket 5, with the threaded section 101 of the push-pull rod 1 at the other end of the steel pipe 7, such as... Figure 5 As shown.

[0026] Then, insert the pad bracket 2 and the elastic pressure claw 3 into the threaded section 101 of the push-pull rod 1 and tighten them with the nut 4; rotate each segment of the elastic pressure claw 3 to install the ceramic block pads 6 one by one; push and pull the push-pull rod 1 to adjust the middle of the pads 6 to be at the end face of the steel pipe 7, and remember the corresponding position of the numerical scale 103 on the push-pull rod 1 and the clamping plate 502 of the rod bracket 5, such as... Figure 6 As shown.

[0027] Next, connect the steel pipe 7 to be welded to the pipe 8. During the connection process, hold the push-pull rod 1 by hand to prevent it from moving. After aligning the weld bevel 9, check whether the original corresponding position of the numerical scale 103 on the push-pull rod 1 and the clamping plate 502 of the rod support 5 has changed. If the original corresponding position has changed, adjust the push-pull rod 1 back to the original corresponding position to ensure that the gasket 6 seals the weld bevel 9 after connection. Figure 7 As shown; then welding is carried out.

[0028] Finally, after welding, the outer ball end of the push-pull rod 1 is struck, causing the pad 6 to be impacted by the pad bracket 2, thus completely separating the pad 6 from the weld 10. Figure 8 As shown; remove the assembly / disassembly tools and gaskets.

Claims

1. A tool for installing and removing gaskets for welding small-diameter pipes, comprising five parts: a push-pull rod (1), a gasket bracket (2), an elastic clamp (3), a nut (4), and a rod bracket (5), characterized in that: The push-pull rod (1) is configured as a long rod, with a length greater than that of the steel pipe (7); one end of the push-pull rod (1) is configured as a slender threaded section (101) for installing the pad bracket (2) and the elastic pressure claw (3) through the nut (4); the other end of the push-pull rod (1) is configured as a thickened ball head (102). The pad bracket (2) passes through the threaded section (101) of the push-pull rod (1), with the maximum outer edge 2~3mm away from the inner wall of the steel pipe (7); the pad (6) is installed on the outer ring surface of the pad bracket (2), and the elastic pressure claw (3) is installed on the inner concave surface. The elastic pressure claw (3) is stamped into a disc shape from a thin steel plate. The maximum outer edge of the formed claw is 2-3 mm away from the inner wall of the steel pipe (7). The elastic pressure claw (3) is fixed to the threaded section (101) of the push-pull rod (1) by the nut (4) and cooperates with the pad bracket (2) to clamp and fix the pad (6). The rod support (5) is cut from a thin steel plate, with the four outer legs punched and bent into clamping openings (501) for clamping and positioning at one end of the steel pipe (7); the inner hole of the rod support (5) is punched and bent into four clamping plates (502) for clamping the push-pull rod (1) to prevent the push-pull rod (1) from sliding freely.

2. The tool for installing and removing gaskets for welding small-diameter pipes according to claim 1, characterized in that: To facilitate the installation of the segmented pads (6), the elastic pressure claws (3) are cut to form a segmented shape. The number of cuts is the same as the number of segmented pads (6), which is used to install the segmented pads (6) one by one.

3. The tool for installing and removing gaskets for welding small-diameter pipes according to claim 1, characterized in that: In order to ensure accurate positioning of the push-pull rod (1), a digital scale (103) is set at one end of the ball head (102) of the push-pull rod (1). By the corresponding position of the digital scale (103) and the clamping plate (502) of the rod bracket (5), it is determined whether the installation position of the pad (6) at the thread section (101) of the push-pull rod (1) has shifted.

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