Aligning device for welding of heat supply pipeline

Abstract

The utility model discloses a heat supply pipeline welding opening aligning device which comprises two arc-shaped clamping plates which are symmetrically arranged, the two arc-shaped clamping plates are rotationally connected through a limiting shaft, and each arc-shaped clamping plate is provided with a welding operation opening. A locking seat is arranged at the end, away from the limiting shaft, of each arc-shaped clamping plate, two U-shaped notches are symmetrically formed in each locking seat, a threaded column is rotationally connected into one U-shaped notch of each locking seat through a pin shaft, and the two threaded columns are located in the two U-shaped notches, not corresponding to the two locking seats, of the two locking seats; and each threaded column is rotationally connected with a butterfly nut. The pipeline clamping device is ingenious in structure, small and exquisite in size, convenient to carry by an operator, convenient for field operation of workers, suitable for clamping pipelines with the same pipe diameter as well as pipelines with certain pipe diameter difference, and wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding equipment, in particular to a welding butt joint device for heating pipelines. Background Technique

[0002] In the heating system, the connection quality of pipelines is crucial. During the traditional welding process of heating pipelines, the butt joint operation often relies on manual experience and simple tools, and there are many problems. With the continuous growth of heating demand and the increasing complexity of the pipeline network, the requirements for the welding quality and efficiency of pipelines are getting higher and higher. In previous operations, due to the lack of a special butt joint device, it is difficult to ensure precise concentricity and perpendicularity during pipeline docking, which easily leads to problems such as uneven welding and unstable weld quality. In addition, manual butt joint is not only inefficient but also labor-intensive and easily affected by human factors such as operation errors and fatigue, thus affecting the welding quality and construction progress. Moreover, some existing temporary butt joint measures often cannot adapt to pipelines of different diameters, with poor versatility, increasing the construction cost and difficulty.

[0003] Under such a background, the research and development of an efficient, precise and universal welding butt joint device for heating pipelines is particularly urgent. It can effectively solve the problems existing in the traditional welding butt joint method, improve the welding quality and efficiency, and ensure the safe and stable operation of the heating system. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems in the background technique and propose a welding butt joint device for heating pipelines.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A welding butt joint device for heating pipelines includes two symmetrically arranged arc-shaped clamping plates, which are rotationally connected by a limiting shaft between the two arc-shaped clamping plates, and a welding operation opening is provided on each arc-shaped clamping plate;

[0007] One end of each arc-shaped clamping plate away from the limiting shaft is provided with a locking seat, and two U-shaped notch openings are symmetrically provided on each locking seat. One of the U-shaped notch openings of each locking seat is rotationally connected with a threaded column through a pin shaft, and the two threaded columns are located in the two non-corresponding U-shaped notch openings of the two locking seats. A wing nut is rotationally connected to each threaded column.

[0008] Preferably, two groups of clamping seats are provided on the outer side wall of each arc-shaped clamping plate, and the two groups of clamping seats are respectively arranged on both sides of the welding operation opening, and a clamping component is installed in each clamping seat.

[0009] Preferably, each of the clamping assemblies includes a threaded rod, and the threaded rod is threadedly connected to the clamping seat. One end of the threaded rod away from the clamping seat is fixedly connected to a knob. A cavity is formed between each clamping seat and the arc-shaped clamping plate, and one end of the threaded rod away from the knob is located in the cavity. A plurality of spherical notches are symmetrically formed on the inner side wall of the arc-shaped clamping plate, and each spherical notch communicates with the corresponding cavity. A locking ball is provided in each cavity, and each locking ball is clamped in the corresponding spherical notch and extends towards the inside of the arc-shaped clamping plate.

[0010] Preferably, the diameter of the spherical notch is smaller than the diameter of the locking ball.

[0011] Preferably, a gasket is sleeved on each threaded post, and the gasket is located between the wing nut and the locking seat.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. The locking between the two arc-shaped clamping plates is realized through the two rotatably connected locking seats, U-shaped notches, threaded posts, gaskets and wing nuts, so as to fix the two heating pipes, preparing for the next welding, avoiding the need for the operator to manually align the two heating pipes during the welding process, reducing the welding difficulty. The settings of the U-shaped notches, threaded posts, gaskets and wing nuts avoid the need for additional bolts to fix the two arc-shaped clamping plates when they are locked, reducing the risk of component loss.

[0014] 2. The overall volume of this device is small, which is convenient for the operator to carry and for the workers to operate on-site. By driving the threaded rod to move through the knob, and then using the threaded rod to abut against the locking ball to clamp the heating pipe, it can ensure that the device is applicable to pipes with different diameters within a certain range, providing a wide range of adaptability for the device. At the same time, when there is a certain diameter difference between the two heating pipes, the two pipes can also be clamped separately to avoid loosening of one of the pipes, and the applicable range is relatively wide.

[0015] In summary, the structure of the present utility model is ingenious, the volume is small, it is convenient for the operator to carry and for the workers to operate on-site. It is not only applicable to clamping pipes with the same diameter, but also applicable to clamping pipes with a certain diameter difference, and the applicable range is relatively wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a heating pipe welding butt joint device proposed by the present utility model;

[0017] Figure 2 is a perspective view of the locking state of a heating pipe welding butt joint device proposed by the present utility model;

[0018] Figure 3This is an enlarged view of the internal structure of the cavity of a welding butt joint device for heating pipelines proposed by the present utility model.

[0019] In the figure: 1 arc-shaped clamping plate, 2 limit shaft, 3 clamping seat, 4 knob, 5 threaded rod, 6 welding operation port, 7 locking seat, 8 locking ball, 9 wing nut, 10 threaded column, 11 gasket, 12 U-shaped notch, 13 cavity, 14 spherical notch. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Refer to Figures 1-3 , a welding butt joint device for heating pipelines, including two symmetrically arranged arc-shaped clamping plates 1, which are rotatably connected by a limit shaft 2 between the two arc-shaped clamping plates 1. A welding operation port 6 is opened on each arc-shaped clamping plate 1. The welding operation port 6 is opened in the middle of the arc-shaped clamping plate 1 and its range is as large as possible to ensure a large welding range during the initial welding;

[0022] A locking seat 7 is provided at one end of each arc-shaped clamping plate 1 away from the limit shaft 2. Two U-shaped notches 12 are symmetrically opened on each locking seat 7. One of the U-shaped notches 12 of each locking seat 7 is rotatably connected to a threaded column 10 through a pin shaft, and the two threaded columns 10 are located in the two non-corresponding U-shaped notches 12 of the two locking seats 7. A wing nut 9 is rotatably connected to each threaded column 10, and the side surfaces of the threads of the threaded column 10 and the wing nut 9 are in contact with each other. Due to the inclination angle of the thread and the action of the pressure, the frictional force generated between the contact surfaces prevents the threaded rod from loosening or withdrawing by itself without external force, realizing the clamping between the wing nut 9 and the threaded column 10 on the two locking seats 7 and improving the reliability of locking. A gasket 11 is sleeved on each threaded column 10, and the gasket 11 is located between the wing nut 9 and the locking seat 7. Using a washer on the threaded column 10 to increase a certain pre-tightening force can further increase the frictional force;

[0023] Two groups of clamping seats 3 are provided on the outer wall of each arc-shaped clamping plate 1, and the two groups of clamping seats 3 are respectively arranged on both sides of the welding operation port 6, and a clamping assembly is installed in each clamping seat 3, and each clamping assembly includes a threaded rod 5, and the threaded rod 5 is threadedly connected in the clamping seat 3, and the end of the threaded rod 5 away from the clamping seat 3 is fixedly connected with a knob 4, and a cavity 13 is jointly provided between each clamping seat 3 and the arc-shaped clamping plate 1, and the end of the threaded rod 5 away from the knob 4 is located in the cavity 13, and a plurality of spherical grooves 14 are symmetrically provided on the inner wall of the arc-shaped clamping plate 1, and each spherical groove 14 is connected to the cavity 13 corresponding to the position, and a locking ball 8 is provided in each cavity 13, and each locking ball 8 is clamped in the spherical groove 14 corresponding to the position and extends to the inside of the arc-shaped clamping plate 1, and the diameter of the spherical groove 14 is smaller than the diameter of the locking ball 8, to ensure that the locking ball 8 will not escape from the device through the spherical groove 14.

[0024] Clamping the heating pipe: align the two heating pipes to be welded and place them between the two arc-shaped clamping plates 1, and ensure that the contact surfaces of the two heating pipes correspond to the positions of the welding operation ports 6, then rotate one of the arc-shaped clamping plates 1 to ensure that both arc-shaped clamping plates 1 are in contact with the outer wall of the heating pipe, and the two locking seats 7 are also in contact with each other, and rotate one of the threaded columns 10 so that the threaded column 10 is horizontally clamped in the two U-shaped notches 12 corresponding to the positions of the two locking seats 7 (such as Figure 2 As shown), at this time, the axis of the threaded column 10 is perpendicular to the axis of the limiting shaft 2, and the butterfly nut 9 on the threaded column 10 is rotated to make the butterfly nut 9 drive the gasket 11 to move in the direction of the locking seat 7 until the position of the threaded column 10 is locked. The friction between the gasket 11 and the side wall of the locking seat 7 limits the rotation of the threaded column 10. Similarly, another stud column 10 is rotated and clamped in the two U-shaped notches 12 corresponding to the positions of the two locking seats 7, and then the butterfly nut 9 is rotated. At this time, the two locking seats 7 The two arc-shaped clamping plates 1 are clamped together, and the interfaces of the two heating pipes are located in the inner cylinder formed between the two arc-shaped clamping plates 1; if the two heating pipes are not completely clamped at this time, the knobs 4 can be turned in turn, and the knobs 4 drive the threaded rods 5 connected thereto to rotate, and the threaded rods 5 are extended in the axial direction while rotating, and the end of the threaded rods 5 pushes the locking ball 8, and the locking ball 8 fits with the inner wall of the heating pipe through the spherical notch 14 until the heating pipes at the corresponding positions are locked between the two arc-shaped clamping plates 1;

[0025] Welding: After the heating pipe is locked, the interface of the two heating pipes is welded through the welding operation port 6. After the interface corresponding to the welding operation port 6 is welded, the device is disassembled from the heating pipe. The disassembly process is the opposite of the clamping process. Figure 1As shown, at this time, the two heating pipes that have been partially welded are fixedly connected, and then the un-welded interfaces can be repaired by welding to ensure that the interfaces of the two heating pipes are completely welded.

[0026] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A welding butt joint device for heating pipelines, characterized in that: It includes two arc-shaped clamping plates (1) arranged symmetrically. The two arc-shaped clamping plates (1) are rotatably connected by a limiting shaft (2). A welding operation opening (6) is provided on each arc-shaped clamping plate (1). A locking seat (7) is provided at one end of each arc-shaped clamping plate (1) away from the limiting shaft (2). Two U-shaped notches (12) are symmetrically provided on each locking seat (7). A threaded column (10) is rotatably connected in one of the U-shaped notches (12) of each locking seat (7). And the two threaded columns (10) are located in the two non-corresponding U-shaped notches (12) of the two locking seats (7). A wing nut (9) is rotatably connected to each threaded column (10).

2. The welding butt joint device for a heating pipeline according to claim 1, characterized in that: Two groups of clamping seats (3) are provided on the outer side wall of each arc-shaped clamping plate (1). And the two groups of clamping seats (3) are respectively arranged on both sides of the welding operation opening (6). A clamping component is installed in each clamping seat (3).

3. The welding butt joint device for a heating pipeline according to claim 2, wherein: Each clamping component includes a threaded rod (5). And the threaded rod (5) is threadedly connected in the clamping seat (3). One end of the threaded rod (5) away from the clamping seat (3) is fixedly connected with a knob (4). A cavity (13) is jointly provided between each clamping seat (3) and the arc-shaped clamping plate (1). And one end of the threaded rod (5) away from the knob (4) is located in the cavity (13). A number of spherical notches (14) are symmetrically provided on the inner side wall of the arc-shaped clamping plate (1). And each spherical notch (14) communicates with the cavity (13) at the corresponding position. A locking ball (8) is provided in each cavity (13). And each locking ball (8) is clamped in the spherical notch (14) at the corresponding position and extends towards the inside of the arc-shaped clamping plate (1).

4. The welding butt joint device for a heating pipeline according to claim 3, characterized in that: The diameter of the spherical notch (14) is smaller than the diameter of the locking ball (8).

5. The welding butt joint device for a heating pipeline according to claim 1, characterized in that: A gasket (11) is sleeved on each threaded column (10). And the gasket (11) is located between the wing nut (9) and the locking seat (7).

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