Thick-wall pipe restraining radial misalignment device

Abstract

The utility model belongs to the technical field of welding and fixing, and particularly discloses a thick-wall pipe restraining radial misalignment device which comprises at least two sets of restraining seats, restraining grooves allowing pipes to penetrate through are formed in the upper portions of the restraining seats, and restraining nuts are arranged on the two walls, located on the upper portions of the restraining grooves, of the restraining seats. The two restraining nuts are connected with restraining bolts, the lower end of one restraining bolt faces the end wall of one side of the pipe welding seam, and the lower end of the other restraining bolt faces the end wall of the other side of the pipe welding seam. The device is simple in structure, low in manufacturing cost, convenient to maintain and replace, long in service life, easy to popularize and capable of solving the misalignment problem caused by thermal deformation or internal stress release of the pipe in the welding work, improving the welding precision, improving the product percent of pass and the production efficiency, reducing the production cost and further improving the overall economic benefit.

Description

Technical Field

[0001] This utility model belongs to the field of welding and fixing technology, and specifically relates to a device for constraining radial misalignment of thick-walled tubes. Background Technology

[0002] Small-diameter, large-wall-thickness, high-strength material products refer to metal pipes with a small ratio of outer diameter to wall thickness, and the materials include high-strength steel, titanium alloys, etc. These products are widely used in petrochemical, aerospace, nuclear power equipment, and military equipment fields due to their combination of high strength, high temperature and pressure resistance, and corrosion resistance.

[0003] This type of high-strength material product with small diameter and large wall thickness is difficult to form. After forced spot welding using a jointing device, there is no misalignment. However, the product has internal stress after spot welding. The stress release after the base welding will cause the product to have a misalignment of 3-4mm. Products with excessive misalignment cannot meet the rework conditions due to structural deformation, resulting in product scrap and unavoidable losses. In addition, the spot weld is prone to breakage, which poses certain safety hazards. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a device for constraining radial misalignment of thick-walled tubes, which can effectively avoid the problem of misalignment of small-diameter products, such as titanium tubes, which are difficult to form, due to stress release after welding.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a device for constraining radial misalignment of thick-walled pipes, including at least two sets of constraint seats. The upper part of the constraint seat is provided with a constraint groove for the pipe to pass through. Constraint nuts are provided on both walls of the constraint seat located above the constraint groove. Each constraint nut is connected to a constraint bolt. The lower end of one constraint bolt faces one end wall of the pipe weld, and the lower end of the other constraint bolt faces the other end wall of the pipe weld.

[0007] As a further improvement to the above scheme, it also includes at least two sets of conveying roller frames for conveying pipes, each conveying roller frame including a roller frame and conveying rollers mounted thereon, the conveying rollers being used to transport the pipes into the constraint groove.

[0008] As a further improvement to the above solution, it also includes at least two sets of roller brackets, each roller bracket comprising a bracket and two sets of rollers mounted thereon for restricting the movement of the pipe.

[0009] As a further improvement to the above scheme, adjacent constraint seats are connected by connecting ribs.

[0010] As a further improvement to the above solution, the constraint nut is fixedly mounted on the constraint seat.

[0011] As a further improvement to the above solution, the constraint bolt is an external hexagonal bolt.

[0012] As a further improvement to the above solution, an auxiliary rotating handle is provided at the upper end of the constraint bolt.

[0013] As a further improvement to the above solution, the lower part of the constraint seat is a frame structure.

[0014] As a further improvement to the above solution, the bracket is a frame structure.

[0015] As a further improvement to the above solution, a rubber sleeve is provided at the lower end of the constraint bolt.

[0016] The beneficial effects of this utility model are:

[0017] 1. The present invention provides a thick-walled pipe radial misalignment constraint device, which, through the cooperation of constraint seat, constraint nut and constraint bolt, accurately constrains one side of the bevel high misalignment according to the pipe size, applies reverse stress to counteract the misalignment problem caused by thermal deformation or internal stress release of the pipe during welding, and improves welding accuracy.

[0018] 2. Compared with pipe products that do not use horizontal auxiliary welding devices, this method solves the problem of misaligned edges, significantly improves the product qualification rate, reduces the product scrap rate, avoids unnecessary material and economic losses, reduces production costs, and improves production efficiency.

[0019] 3. Compared with pipe products that do not use horizontal auxiliary welding devices, this solves the problem of misaligned edges and avoids the safety hazards caused by the easy breakage of spot welds.

[0020] 4. This device has low manufacturing cost and is easy to promote. At the same time, it has a simple structure, is easy to maintain and replace, and has a long service life. After use, it can still perform mechanical welding on products with small diameters, titanium tubes and other products that are difficult to form. At the same time, it reduces welding material consumption and exhaust gas emissions, improves economic efficiency and reduces the pollution of exhaust gas emissions to the environment.

[0021] 5. This invention optimizes the overall process through structural innovation, significantly improving welding quality, safety, and economy, especially in the fields of high-difficulty materials (such as titanium pipes) and small-diameter products, giving it an industry-leading advantage. It not only solves the pain points of traditional welding but also provides reliable technical support for intelligent manufacturing and green production. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model in use;

[0023] Figure 2This is a schematic diagram of the constraint seat in this utility model;

[0024] Figure 3 This is a schematic diagram of the conveyor roller frame in this utility model;

[0025] Figure 4 This is a schematic diagram of the roller bracket in this utility model.

[0026] In the diagram: 1. Constraint seat; 101. Constraint groove; 2. Constraint nut; 3. Constraint bolt; 301. Auxiliary handle; 4. Pipe; 5. Conveyor roller frame; 501. Roller frame; 502. Conveyor roller; 6. Roller bracket; 601. Bracket; 602. Roller; 7. Rib plate. Detailed Implementation

[0027] To further illustrate the technical solution of this utility model, the following description is provided in conjunction with the accompanying drawings and embodiments.

[0028] like Figures 1 to 4 As shown, this utility model provides a device for constraining radial misalignment of a thick-walled pipe, including at least two sets of constraint seats 1. The upper part of the constraint seat 1 is provided with a constraint groove 101 through which the pipe 4 can pass. Constraint nuts 2 are provided on both walls of the constraint seat 1 located above the constraint groove 101. Both constraint nuts 2 are connected to constraint bolts 3. The lower end of one constraint bolt 3 faces one side end wall of the weld of the pipe 4, and the lower end of the other constraint bolt 3 faces the other side end wall of the weld of the pipe 4.

[0029] Specifically, during use, by adjusting the constraint bolt 3, a stress reaction force is applied to the misaligned sidewall of the pipe weld bevel, and then motor welding can be performed. After welding, the process is maintained for a certain period of time to eliminate the misalignment of the pipe.

[0030] Specifically, the constraint groove 101 can be designed according to the size of the product pipe, the number of constraint seats 1 can be selected according to the length of the product pipe, and the height of the constraint seats 1 can be designed according to the adaptability of the production environment. In this embodiment, six sets of constraint seats 1 are selected, and correspondingly there are six sets of constraint components composed of constraint nuts 2 and adjusting constraint bolts 3. The constraint components are evenly distributed according to the length of the pipe.

[0031] Furthermore, in some embodiments, the device also includes at least two sets of conveying roller frames 5 for conveying the pipe 4. The conveying roller frame 5 includes a roller frame 501 and a conveying roller 502 mounted thereon. The conveying roller 502 is used to transport the pipe 4 into the constraint groove 101.

[0032] Specifically, the conveyor rollers 502 can be selected according to the size of the product pipe, the number of roller frames 501 can be selected according to the length constraint seats 1 of the product pipe, and the height of the roller frames 501 can be designed according to the adaptability of the production environment. In this embodiment, four sets of conveyor roller frames 5 are selected.

[0033] Furthermore, in some embodiments, the device further includes at least two sets of roller brackets 6, each roller bracket 6 including a bracket 601 and two sets of rollers 602 mounted thereon for restricting the movement of the pipe 4.

[0034] Specifically, the rollers 602 can be selected according to the size of the product pipe, the number of brackets 601 can be selected according to the length of the product pipe and the number of constraint seats 1, and the height of the brackets 601 can be designed according to the adaptability of the production environment. In this embodiment, three sets of roller brackets 6 are selected, and the roller brackets 6 are spaced apart between the constraint seats 1.

[0035] Specifically, such as Figure 1 As shown, the constraint seat 1, the conveyor roller frame 5, and the roller bracket 6 are linearly distributed and work together to support the pipe. In the product processing area, the conveyor roller frame 5 and the roller bracket 6 are spaced apart between the constraint seats 1. The separately provided conveyor roller frame 5 is used to transport the pipe to the product processing area.

[0036] Furthermore, in some embodiments, adjacent constraint seats 1 are connected by connecting ribs 7. The connecting ribs 7 can strengthen the connection between constraint seats 1, improve the overall structural strength of the device, and make the processing more stable.

[0037] Furthermore, in some embodiments, the constraint nut 2 is fixedly mounted on the constraint seat 1.

[0038] Furthermore, in some embodiments, the constraint bolt 3 is an external hexagonal bolt.

[0039] Furthermore, in some embodiments, an auxiliary handle 301 is provided at the upper end of the constraint bolt 3, which facilitates the operator to adjust the constraint bolt 3.

[0040] Furthermore, in some embodiments, the lower part of the constraint seat 1 is a frame structure, which can reduce material consumption and lower manufacturing costs.

[0041] Furthermore, in some embodiments, the bracket 601 is a frame structure, which can reduce material consumption and lower manufacturing costs.

[0042] Furthermore, in some embodiments, a rubber sleeve is provided at the lower end of the constraint bolt 3 to avoid scratching the surface of the pipe.

[0043] Furthermore, in some embodiments, the roller has a rubber housing.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for constraining radial misalignment in a thick-walled tube, characterized in that: It includes at least two sets of constraint seats (1), the upper part of the constraint seat (1) is provided with a constraint groove (101) through which the pipe (4) can pass, and constraint nuts (2) are provided on both walls of the constraint seat (1) located above the constraint groove (101). Both constraint nuts (2) are connected to constraint bolts (3), the lower end of one constraint bolt (3) faces one side end wall of the weld of the pipe (4), and the lower end of the other constraint bolt (3) faces the other side end wall of the weld of the pipe (4).

2. The thick-walled tube radial misalignment restraint device according to claim 1, characterized in that: It also includes at least two sets of conveying roller frames (5) for conveying pipes (4), the conveying roller frames (5) including roller frames (501) and conveying rollers (502) mounted thereon, the conveying rollers (502) being used to transport pipes (4) into the constraint grooves (101).

3. The thick-walled tube radial misalignment restraint device according to claim 1, characterized in that: It also includes at least two sets of roller brackets (6), each roller bracket (6) including a bracket (601) and two sets of rollers (602) mounted thereon for restricting the movement of the pipe (4).

4. The thick-walled tube radial misalignment restraint device according to claim 1, characterized in that: Adjacent constraint seats (1) are connected by connecting ribs (7).

5. The thick-walled tube radial misalignment constraint device according to claim 1, characterized in that: The constraint nut (2) is fixedly mounted on the constraint seat (1).

6. The thick-walled tube radial misalignment restraint device according to claim 1, characterized in that: The constraint bolt (3) is an external hexagonal bolt.

7. The thick-walled tube radial misalignment restraint device according to claim 1, characterized in that: An auxiliary rotating handle (301) is provided at the upper end of the constraint bolt (3).

8. The thick-walled tube radial misalignment restraint device according to claim 1, characterized in that: The lower part of the constraint seat (1) is a frame structure.

9. A thick-walled tube radial misalignment constraint device according to claim 3, characterized in that: The bracket (601) is a frame structure.

10. A thick-walled tube radial misalignment constraint device according to claim 3, characterized in that: A rubber sleeve is provided at the lower end of the constraint bolt (3).

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