Large-diameter pipeline welded junction assembly tool

Abstract

The utility model discloses a large-diameter pipeline welded junction assembly tool which comprises a first pipeline and a second pipeline, and the inner wall of the first pipeline and the inner wall of the second pipeline are both connected with a tool part assisting in opening alignment of the first pipeline and the second pipeline. The tool part comprises a first fixing block and a second fixing block which are connected with the first pipeline and the second pipeline respectively, and a double-thread screw rod is horizontally arranged between the first fixing block and the second fixing block. The device is simple in structure, the double-thread screw rod is arranged to be connected with the first fixing block and the second fixing block respectively, when the double-thread screw rod rotates, the first fixing block and the second fixing block can move synchronously, and the first fixing block and the second fixing block are close to each other under the action of opposite thread rotating directions, so that the fixing effect is improved, and the service life of the device is prolonged. The tool for connecting the first pipeline and the second pipeline is simple in structure, fast to manufacture, convenient to use and capable of being recycled, and waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline joint matching, in particular to a large-diameter pipeline welding joint matching tool. Background Art

[0002] In recent years, the construction period of steam turbine installation work in thermal power generation construction projects has become increasingly tight, while the progress and quality requirements have become increasingly higher. In the process of achieving standards and creating excellence, more and more attention has been paid to refined construction, which has put forward higher and higher construction requirements for on-site workers, forcing them to complete construction tasks in a timely and effective manner under the premise of safety and compliance. Since the installation of circulating water pipelines in the plant area is an indispensable process for the installation of steam turbines in power plants, the operation is time-consuming and requires more shifts. Therefore, it is necessary to design a large-diameter circulating water pipeline welding joint assembly tool that can reduce the consumption of labor and mechanical shifts, and can be recycled and reused after the project is completed, so as to achieve the purpose of reducing construction costs. Utility Model Content

[0003] The utility model aims to provide a large-diameter pipeline weld joint assembly tool to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the utility model provides the following technical solution: a large-diameter pipe welding joint assembly tool, comprising a first pipe and a second pipe, wherein the inner walls of the first pipe and the second pipe are both connected to a tooling part for assisting the two pipes to align with each other;

[0005] The tooling part includes a first fixed block and a second fixed block respectively connected to the first pipe and the second pipe, a double-threaded screw is horizontally arranged between the first fixed block and the second fixed block, and the two ends of the double-threaded screw are respectively connected to the first fixed block and the second fixed block; the double-threaded screw is provided with a rotating part for assisting the double-threaded screw to rotate.

[0006] As a further solution of the utility model: the number of the tooling parts is two, and the two tooling parts are symmetrically arranged at 180 degrees on the inner walls of the first pipe and the second pipe.

[0007] As a further solution of the utility model: the first fixing block and the second fixing block are respectively connected to the first pipeline and the second pipeline by spot welding.

[0008] As a further solution of the utility model: at least one bolt is installed on the surface of the first fixing block and the second fixing block, and the end of the bolt passes through the first fixing block or the second fixing block and is threadedly connected to the first pipe or the second pipe.

[0009] As a further solution of the utility model: two external threads are formed on the double-threaded screw rod, which are respectively threadedly connected to the first fixing block and the second fixing block, and the thread rotation directions of the two external threads are opposite.

[0010] As a further solution of the utility model: the rotating member includes two pin holes opened in the middle of the double-threaded screw rod, and iron rods are detachably inserted into the pin holes.

[0011] As a further solution of the utility model: the two pin holes both penetrate the double-threaded screw rod, and the axial lengths of the two pin holes are designed to be cross-shaped and criss-crossed.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging a double-threaded screw respectively connected to the first fixed block and the second fixed block, when the double-threaded screw rotates, the first fixed block and the second fixed block can move synchronously, and under the action of opposite thread rotation directions, the first fixed block and the second fixed block are brought close to each other, ensuring that the first pipe and the second pipe can be smoothly connected, thereby completing the connection between the first pipe and the second pipe. The tool of the present application has a simple structure, is quick to manufacture, and is easy to use, and the tool can be recycled to avoid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the first pipeline and the second pipeline of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the first pipeline and the second pipeline of the utility model;

[0015] Figure 3 This is a schematic diagram of the tooling part of the utility model;

[0016] Figure 4 This is a schematic diagram of another embodiment of the tooling part of the utility model;

[0017] In the figure: 1. first pipe; 2. second pipe; 3. double-threaded screw; 4. first fixing block; 5. second fixing block; 6. pin hole; 7. iron rod; 8. bolt. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The installation of circulating water pipelines in an existing 1000MW thermal power generation construction project usually takes 2 to 3 months to weld joints using a crane or a homemade gantry. Using this tool can save one month of construction time.

[0020] See also Figure 1-4 In an embodiment of the utility model, a large-diameter pipe welding joint assembly tool comprises a first pipe 1 and a second pipe 2, the inner walls of the first pipe 1 and the second pipe 2 are connected to a tooling part that assists the first pipe 1 and the second pipe 2 to mate; there are two tooling parts, and the two tooling parts are symmetrically arranged at 180° on the inner walls of the first pipe 1 and the second pipe 2, which can ensure that the first pipe 1 and the second pipe 2 on both sides of the weld are evenly close to each other without any deviation, and the tooling part comprises a first fixing block 4 and a second fixing block 5 respectively connected to the first pipe 1 and the second pipe 2, a double-threaded screw 3 is horizontally arranged between the first fixing block 4 and the second fixing block 5, and the two ends of the double-threaded screw 3 are respectively connected to the first fixing block 4 and the second fixing block 5, and the center holes of the first fixing block 4 and the second fixing block 5 are provided with internal threads, which are stably engaged with the thread teeth of the double-threaded screw 3, so that the double-threaded screw 3 can rotate freely in the center holes of the first pipe 1 and the second pipe 2; a rotating part that assists the double-threaded screw 3 to rotate is arranged on the double-threaded screw 3.

[0021] Specifically, two external threads are formed on the double-threaded screw 3, which are respectively threadedly connected to the first fixed block 4 and the second fixed block 5, and the thread rotation directions of the two external threads are opposite. When the double-threaded screw 3 is rotated, since the first fixed block 4 and the second fixed block 5 are respectively fixedly connected to the first pipe 1 and the second pipe 2, the first fixed block 4 and the second fixed block 5 will not rotate with the double-threaded screw 3. By utilizing the principle of opposite thread rotation directions, the first fixed block 4 and the second fixed block 5 can be driven to approach or move away from each other when the double-threaded screw 3 is rotated. The first fixed block 4 and the second fixed block 5 respectively drive the first pipe 1 and the second pipe 2 to move synchronously while moving, ensuring that the groove gap of one circle at the joint between the first pipe 1 and the second pipe 2 is uniform.

[0022] See also Figure 2 In one embodiment, in order to facilitate the recycling of the tooling part, in this embodiment, preferably, the first fixing block 4 and the second fixing block 5 are respectively connected to the first pipe 1 and the second pipe 2 by spot welding, and the first fixing block 4 and the second fixing block 5 can be stably connected with the contact positions of the first pipe 1 and the second pipe 2 by spot welding technology to ensure that the first fixing block 4 and the second fixing block 5 can be connected with the first pipe 1 and the second pipe 2. After the welding of the first pipe 1 and the second pipe 2 is completed, a cutting machine can be used to cut the spot welding position to separate the pipe from the tooling part to ensure the secondary use of the tooling part.

[0023] See also Figure 4 In another embodiment, in order to reduce damage to the tooling part, in this embodiment, preferably, at least one bolt 8 is installed on the surface of the first fixing block 4 and the second fixing block 5, and the number of bolts 8 is not limited. In this embodiment, the number of bolts 8 on each fixing block is two, and the end of the bolt 8 passes through the first fixing block 4 or the second fixing block 5 and is threadedly connected to the first pipe 1 or the second pipe 2.

[0024] Specifically, threaded through holes adapted to the bolts 8 are provided on the first fixing block 4 and the second fixing block 5, and threaded holes threadedly connected to the ends of the bolts 8 are provided on the inner walls of the first pipe 1 and the second pipe 2. Through the relationship between the bolts 8 and the threaded holes, the pipes and the tooling parts can be connected and separated, and the tooling parts can be recycled for multiple times without damaging the tooling parts.

[0025] See also Figure 3-4 In one embodiment, in order to rotate the double-threaded screw 3 more labor-saving, in this embodiment, preferably, the rotating member includes two pin holes 6 opened in the middle of the double-threaded screw 3, and an iron rod 7 is detachably inserted into the pin holes 6.

[0026] Specifically, first insert the end of the iron rod 7 into the pin hole 6. At this time, the iron rod 7 inserted into the pin hole 6 is shorter, and the iron rod 7 not inserted into the pin hole 6 is longer. The lever principle is used to obtain a greater torsional force. Since the first pipe 1 and the second pipe 2 are both large-diameter, the rotation of the double-headed threaded screw 3 can be more labor-saving, further ensuring that the first pipe 1 and the second pipe 2 can be quickly approached.

[0027] See also Figure 3-4 In one embodiment, in order to facilitate the iron rod 7 to rotate the double-threaded screw 3 in the large-diameter pipe, in this embodiment, preferably, the two pin holes 6 both penetrate the double-threaded screw 3, and the axial lengths of the two pin holes 6 are designed in a cross-like criss-cross pattern. By setting two pin holes 6 that penetrate the double-threaded screw 3, when the iron rod 7 is inserted into one of the pin holes 6, the double-threaded screw 3 can be rotated half a circle, so that the two pin holes 6 with a cross-like criss-cross pattern can satisfy the rotation of the double-threaded screw 3 for one circle.

[0028] The working principle and use process of the utility model are as follows: when the tool is used, the first fixing block 4 and the second fixing block 5 can be spot welded on the inner wall of the large-diameter pipe. After the first fixing block 4 and the second fixing block 5 are firmly fixed, the iron rod 7 is inserted to rotate the double-headed threaded screw 3 to pull the first fixing block 4 and the second fixing block 5 closer, and the first pipe 1 and the second pipe 2 on both sides of the weld will be quickly close; in order to ensure that the first pipe 1 and the second pipe 2 on both sides of the weld are evenly close and there is no deflection, the pair of tools can be symmetrically arranged 180° on both sides of the inner walls of the first pipe 1 and the second pipe 2, and finally the first pipe 1 and the second pipe 2 are welded.

[0029] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0030] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A large-diameter pipeline weld assembly tool, comprising a first pipeline (1) and a second pipeline (2), characterized in that: The inner walls of the first pipe (1) and the second pipe (2) are both connected to a tooling part that assists the two pipes to mate with each other; The tooling part comprises a first fixed block (4) and a second fixed block (5) respectively connected to the first pipe (1) and the second pipe (2); a double-threaded screw (3) is horizontally arranged between the first fixed block (4) and the second fixed block (5); and two ends of the double-threaded screw (3) are respectively connected to the first fixed block (4) and the second fixed block (5); and a rotating part is arranged on the double-threaded screw (3) to assist the double-threaded screw (3) in rotating.

2. The large-diameter pipe weld assembly tool according to claim 1, characterized in that: The number of the tooling parts is two, and the two tooling parts are symmetrically arranged at 180 degrees on the inner walls of the first pipe (1) and the second pipe (2).

3. The large-diameter pipe weld assembly tool according to claim 2, characterized in that: The first fixing block (4) and the second fixing block (5) are respectively connected to the first pipeline (1) and the second pipeline (2) by spot welding.

4. The large-diameter pipe weld assembly tool according to claim 2, characterized in that: At least one bolt (8) is installed on the surface of each of the first fixing block (4) and the second fixing block (5), and the end of the bolt (8) passes through the first fixing block (4) or the second fixing block (5) and is threadedly connected to the first pipe (1) or the second pipe (2).

5. The large-diameter pipe weld assembly tool according to claim 1, characterized in that: The double-threaded screw rod (3) has two external threads which are respectively threadedly connected to the first fixing block (4) and the second fixing block (5), and the thread rotation directions of the two external threads are opposite.

6. The large-diameter pipe weld assembly tool according to claim 1, characterized in that: The rotating member comprises two pin holes (6) opened in the middle of the double-threaded screw rod (3), and an iron rod (7) is detachably inserted into the pin holes (6).

7. The large-diameter pipe weld assembly tool according to claim 6, characterized in that: The two pin holes (6) both penetrate the double-threaded screw rod (3), and the axial lengths of the two pin holes (6) are designed to be cross-shaped and criss-cross.

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