Anti-nitriding welding tool for carbon steel joint pipe

Abstract

The utility model discloses an anti-nitridation welding tool for a carbon steel joint pipe, which comprises a carbon steel joint pipe body, the carbon steel joint pipe body comprises a welding pipe body, and a protection assembly for preventing oxygen from entering a welding area is embedded in the periphery of the welding pipe body. The protection assembly comprises a first protection outer cylinder arranged on the periphery of the welding pipe body in a sleeving mode and a second protection outer cylinder fixed to the first protection outer cylinder in a clamped and threaded mode. According to the utility model, the welding pipe body is embedded into the inner part from the hollow groove formed by clamping the elastic protection inner cylinder I and the elastic protection inner cylinder II, and the welding pipe body extrudes the elastic protection inner cylinder I and the elastic protection inner cylinder II to be close to the inner walls of the first protection outer cylinder and the second protection outer cylinder; by means of the reset spring and the supporting telescopic rod, stable supporting can be provided when the welding pipe body is extruded, the welding pipe bodies of different sizes can be sleeved in an embedded connection mode, entering of oxygen in air is reduced, and the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-nitriding welding tool equipment, in particular to an anti-nitriding welding tool for carbon steel joint pipes. Background Art

[0002] Carbon steel pipe joints are a type of pipe fitting used to connect carbon steel pipes. Carbon steel pipes are widely used in industry, construction, shipbuilding and other fields. Carbon steel pipe joints are also used to connect, divert or divert pipelines to adapt to different pipeline layouts and needs.

[0003] When carbon steel joint pipes are connected and fixed, welding technology is required. However, during welding, the oxygen in the air will produce bubbles during welding, resulting in poor weld porosity. The bubbles formed also need to be subsequently processed, which reduces the efficiency of welding. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-nitriding welding tool for carbon steel joint pipes in order to solve the problem that the existing carbon steel joint pipes need to be fixed by welding technology when being connected and fixed, but during welding, oxygen in the air will generate bubbles during welding, resulting in poor weld porosity, and the bubbles formed need to be subsequently processed, which reduces the welding efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a carbon steel joint pipe anti-nitriding welding tool, comprising a carbon steel joint pipe body, the carbon steel joint pipe body comprising a welded pipe body, the outer periphery of the welded pipe body being embedded with a protective component to prevent oxygen from entering the welding area, the protective component comprising a first protective outer tube sleeved on the outer periphery of the welded pipe body and a second protective outer tube fixed with a clamping thread to the first protective outer tube, an elastic protective inner tube 1 embedded with the welded pipe body is provided on the inner side of the first protective outer tube near one end of the welded pipe body, an elastic protective inner tube 2 fixed with the elastic protective inner tube 1 by clamping near one end of the welded pipe body on the inner side of the second protective outer tube, a supporting telescopic rod is provided in the middle of the first protective outer tube and the elastic protective inner tube 1, and a reset spring is sleeved on the outer periphery of the supporting telescopic rod to telescope and reset the elastic protective inner tube 1, the supporting telescopic rod and the reset spring are also provided in the middle of the second protective outer tube and the elastic protective inner tube 2.

[0006] As a further solution of the present invention: a clamping groove is provided at one end of the elastic protective inner tube near one end of the welded tube body, which is fixed by sliding clamping with the second elastic protective inner tube, and the clamping groove is symmetrically provided at one end of the elastic protective inner tube, and a clamping slider is symmetrically fixed at one end of the elastic protective inner tube.

[0007] As a further solution of the present invention: a threaded fixing block is fixed to one end of the first protective outer tube with a thread fixed to the second protective outer tube, and the threaded fixing blocks are symmetrically and evenly fixed to the two ends of the first protective outer tube. The threaded fixing blocks are also symmetrically fixed to the two ends of the second protective outer tube, and one end of the threaded fixing block is provided with a threaded fixing groove fixed to the screw thread.

[0008] As a further solution of the present invention: an observation window is provided at one end of the first protective outer tube for convenient observation of the internal welding conditions, and the observation windows are also arranged at one end of the elastic protective inner tube 1, the second protective outer tube and the elastic protective inner tube 2. The observation windows of the first protective outer tube and the elastic protective inner tube 1 are symmetrically arranged, and the observation windows of the second protective outer tube and the elastic protective inner tube 2 are also symmetrically arranged.

[0009] As a further solution of the present invention: the elastic protective inner tube 1 and the elastic protective inner tube 2 are both made of polytetrafluoroethylene material.

[0010] As a further solution of the present invention: the observation window is made of transparent quartz material.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] When a worker uses the protective assembly to weld a pipe body, they first securely connect the first and second elastic protective inner tubes together using the snap-fitting grooves and sliders. A screw is then inserted through the threaded fixing grooves at one end of the threaded fixing blocks at both ends of the first and second protective outer tubes to secure them. The snap-fitting slider, snap-fitting grooves, and threaded fixing blocks allow the protective assembly to be quickly and easily embedded in the outer periphery of the welded pipe body.

[0013] After the fixation is completed, the welding tube body is embedded into the interior from the empty groove formed by the clamping of the elastic protective inner tube 1 and the elastic protective inner tube 2, and the elastic protective inner tube 1 and the elastic protective inner tube 2 are squeezed by the welding tube body to approach the inner walls of the first protective outer tube and the second protective outer tube. The reset spring and the supporting telescopic rod can provide stable support when the welding tube body is squeezed, and welding tube bodies of different sizes can be embedded and sleeved, thereby reducing the entry of oxygen in the air and improving welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the expanded structure of the protective component of the utility model;

[0016] Figure 3 This utility model Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 4 This utility model Figure 2 Schematic diagram of the enlarged structure at B in the middle;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the protective component of the utility model.

[0019] In the figure: 1. Carbon steel joint pipe body; 11. Welded pipe body; 2. Protective assembly; 21. First protective outer tube; 22. Second protective outer tube; 23. Elastic protective inner tube 1; 24. Elastic protective inner tube 2; 25. Support telescopic rod; 26. Return spring; 27. Observation window; 28. Snap-in slide; 29. ​​Snap-in slider; 210. Threaded fixing block; 211. Threaded fixing groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or connected in an integral manner; they can be mechanically connected or electrically connected; they can be directly connected, indirectly connected through an intermediate medium, or they can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The following describes the embodiments of the present invention based on its overall structure.

[0022] Reference Figures 1 to 5In the embodiment of the present invention, a carbon steel joint pipe anti-nitriding welding tool comprises a carbon steel joint pipe body 1, the carbon steel joint pipe body 1 comprises a welding pipe body 11, the outer periphery of the welding pipe body 11 is embedded with a protective component 2 to prevent oxygen from entering the welding area, the protective component 2 comprises a first protective outer cylinder 21 sleeved on the outer periphery of the welding pipe body 11 and a second protective outer cylinder 22 fixed with a clamping thread to the first protective outer cylinder 21, the inner side of the first protective outer cylinder 21 is provided with a threaded connection with the welding pipe body 1 1 is embedded in the elastic protective inner tube 1 23, and the inner side of the second protective outer tube 22 is close to the end of the welded tube body 11 and is fixed to the elastic protective inner tube 1 23. A supporting telescopic rod 25 is provided in the middle of the first protective outer tube 21 and the elastic protective inner tube 1 23, and a reset spring 26 is sleeved on the outer circumference of the supporting telescopic rod 25 for retracting and resetting the elastic protective inner tube 1 23. The supporting telescopic rod 25 and the reset spring 26 are also provided in the middle of the second protective outer tube 22 and the elastic protective inner tube 2 24.

[0023] Reference Figure 2 and Figure 4 One end of the elastic protective inner tube 1 23 is provided with a clamping groove 28 close to one end of the welded tube body 11, which is fixed with the elastic protective inner tube 2 24 in a sliding clamping manner, and the clamping groove 28 is symmetrically provided at one end of the elastic protective inner tube 1 23, and one end of the elastic protective inner tube 2 24 is symmetrically fixed with a clamping slider 29 which is fixed with the clamping groove 28 in a sliding clamping manner. Both the elastic protective inner tube 1 23 and the elastic protective inner tube 2 24 are made of polytetrafluoroethylene material.

[0024] Reference Figure 2 A threaded fixing block 210 is fixed at one end of the first protective outer tube 21 and is threadedly fixed to the second protective outer tube 22. The threaded fixing blocks 210 are symmetrically and evenly fixed at both ends of the first protective outer tube 21. The threaded fixing blocks 210 are also symmetrically fixed at both ends of the second protective outer tube 22. A threaded fixing groove 211 is opened at one end of the threaded fixing block 210 and is threadedly fixed to the screw.

[0025] Reference Figures 1 to 5 An observation window 27 is provided at one end of the first protective outer tube 21 for convenient observation of the internal welding conditions, and the observation window 27 is also provided at one end of the elastic protective inner tube 1 23, the second protective outer tube 22 and the elastic protective inner tube 2 24. The observation windows 27 of the first protective outer tube 21 and the elastic protective inner tube 1 23 are symmetrically arranged, and the observation windows 27 of the second protective outer tube 22 and the elastic protective inner tube 2 24 are also symmetrically arranged. The observation windows 27 are made of transparent quartz material.

[0026] The working principle of the present invention is as follows: when the staff needs to use the protection assembly 2 to weld the welding pipe body 11, first the elastic protection inner tube 1 23 and the elastic protection inner tube 2 24 are clamped and fixed by the clamping groove 28 and the clamping slider 29. Afterwards, the screw is passed through the threaded fixing groove 211 at one end of the threaded fixing block 210 at both ends of the first protective outer tube 21 and the second protective outer tube 22 to fix the first protective outer tube 21 and the second protective outer tube 22. The protective component 2 can be easily and quickly embedded in the outer periphery of the welding tube body 11 through the clamping slider 29, the clamping groove 28 and the threaded fixing block 210. After the fixation is completed, the welding tube body 11 is embedded into the interior from the empty groove formed by the clamping of the elastic protective inner tube 1 23 and the elastic protective inner tube 2 24, and the elastic protective inner tube 1 23 and the elastic protective inner tube 2 24 are squeezed toward the inner wall of the first protective outer tube 21 and the second protective outer tube 22 through the welding tube body 11. The return spring 26 and the supporting telescopic rod 25 can provide stable support when the welding tube body 11 is squeezed, and welding tube bodies 11 of different sizes can be embedded and sleeved, reducing the entry of oxygen in the air and improving welding efficiency.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A nitriding-proof welding tool for carbon steel joint pipes, characterized in that: The invention comprises a carbon steel joint pipe body (1), wherein the carbon steel joint pipe body (1) comprises a welded pipe body (11), wherein the outer periphery of the welded pipe body (11) is embedded with a protective component (2) for preventing oxygen from entering the welding area, wherein the protective component (2) comprises a first protective outer cylinder (21) sleeved on the outer periphery of the welded pipe body (11) and a second protective outer cylinder (22) fixed to the first protective outer cylinder (21) by a clamping thread, and an elastic protective inner cylinder (23) embedded with the welded pipe body (11) is provided on the inner side of the first protective outer cylinder (21) near one end of the welded pipe body (11). The inner side of the second protective outer tube (22) is close to one end of the welded tube body (11) and is fixedly connected to the elastic protective inner tube one (23). A supporting telescopic rod (25) is provided in the middle of the first protective outer tube (21) and the elastic protective inner tube one (23), and a reset spring (26) is provided on the outer periphery of the supporting telescopic rod (25) for retracting and resetting the elastic protective inner tube one (23). The supporting telescopic rod (25) and the reset spring (26) are also provided in the middle of the second protective outer tube (22) and the elastic protective inner tube two (24).

2. The anti-nitriding welding tool for carbon steel joint pipe according to claim 1, characterized in that: One end of the elastic protective inner tube (23) is provided with a clamping groove (28) which is fixedly connected to the elastic protective inner tube (24) by sliding, clamping and clamping, near one end of the welding tube body (11), and the clamping groove (28) is symmetrically provided at one end of the elastic protective inner tube (23), and one end of the elastic protective inner tube (24) is symmetrically fixed with a clamping slider (29) which is fixedly connected to the clamping groove (28) by sliding, clamping and clamping.

3. The anti-nitriding welding tool for carbon steel joint pipe according to claim 1, characterized in that: A threaded fixing block (210) is fixed to one end of the first protective outer tube (21) and is threadedly fixed to the second protective outer tube (22). The threaded fixing blocks (210) are symmetrically and evenly fixed to both ends of the first protective outer tube (21). The threaded fixing blocks (210) are also symmetrically fixed to both ends of the second protective outer tube (22). One end of the threaded fixing block (210) is provided with a threaded fixing groove (211) that is threadedly fixed to the screw.

4. The anti-nitriding welding tool for carbon steel joint pipe according to claim 1, characterized in that: An observation window (27) is provided at one end of the first protective outer tube (21) for conveniently observing the internal welding conditions, and the observation window (27) is also provided at one end of the elastic protective inner tube (23), the second protective outer tube (22) and the elastic protective inner tube (24). The observation windows (27) of the first protective outer tube (21) and the elastic protective inner tube (23) are symmetrically arranged, and the observation windows (27) of the second protective outer tube (22) and the elastic protective inner tube (24) are also symmetrically arranged.

5. The anti-nitriding welding tool for carbon steel joint pipe according to claim 1, characterized in that: The elastic protective inner tube 1 (23) and the elastic protective inner tube 2 (24) are both made of polytetrafluoroethylene material.

6. The anti-nitriding welding tool for carbon steel joint pipe according to claim 4, characterized in that: The observation window (27) is made of transparent quartz material.

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