Corrosion-resistant duplex stainless steel pipe with correction structure

Abstract

The utility model discloses a kind of corrosion-resistant duplex stainless steel pipes with correction structure, including first pipe body and second pipe body and two positioning pipes, two positioning pipes are coaxially arranged, first pipe body and second pipe body are respectively movable in two positioning pipes, a plurality of auxiliary correction modules are equipped between two positioning pipes, auxiliary correction module includes mounting bracket, locating screw, horizontal positioning plate and bubble level, mounting bracket includes screw hole for being threadedly connected with locating screw, horizontal positioning plate is movably connected at the output end of locating screw, horizontal positioning plate is cooperated with the surface of first pipe body and second pipe body, bubble level is fixed on horizontal positioning plate.The utility model has the beneficial effects that by setting two coaxial positioning pipes and a plurality of auxiliary correction modules, two persons are not needed to hold pipe body alignment welding, improve butt joint precision, at the same time, the butt joint scene of adapting heavy pipeline, reduce the operation difficulty and labor amount when manually butt joint two steel pipes, save time and effort, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe technology, and more specifically, it relates to a corrosion-resistant duplex stainless steel pipe with a correction structure. Background Technology

[0002] The main characteristics of duplex stainless steel pipes are their strength, which can reach 400-550 MPa, twice that of ordinary stainless steel. In terms of corrosion resistance, especially in harsh environments (such as seawater with high chloride ion content), duplex stainless steel exhibits significantly better resistance to pitting corrosion, crevice corrosion, stress corrosion, and corrosion fatigue than ordinary austenitic stainless steel, and is comparable to high-alloy austenitic stainless steel. It is widely used in petrochemical equipment, seawater and wastewater treatment equipment, oil and gas pipelines, papermaking machinery, and other industrial fields. In recent years, its application in bridge load-bearing structures has also been studied, showing great development potential.

[0003] To increase the transmission distance of duplex stainless steel pipes, flanges are usually used to weld and fix multiple duplex stainless steel pipes in sequence. However, the welding process relies on external clamps or manual adjustment to align the welding points of two steel pipes of the same size. When manually connecting two steel pipes, the connection operation depends on human experience, which is difficult to operate. Moreover, the accuracy of manual connection is not ideal, which affects the subsequent welding quality. For the connection of heavy pipes, manual connection is even more time-consuming and labor-intensive. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a corrosion-resistant duplex stainless steel pipe with a correction structure.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A corrosion-resistant duplex stainless steel pipe with a correction structure includes a first pipe body, a second pipe body, and two positioning tubes. Several auxiliary correction modules are provided between the first and second pipe bodies. The two positioning tubes are coaxially arranged, and the first and second pipe bodies move within the two positioning tubes respectively. The connection ports of the first and second pipe bodies extend from one end of the corresponding positioning tubes. Several auxiliary correction modules are arranged around the positioning tubes. Each auxiliary correction module includes a mounting bracket, a positioning screw, a horizontal positioning plate, and a bubble level. The mounting bracket is U-shaped, and its two ends are detachably connected to the two positioning tubes respectively. The mounting bracket includes screw holes that are threaded to the positioning screw. The horizontal positioning plate is movably connected to the output end of the positioning screw and mates with the surfaces of the first and second pipe bodies. The bubble level is fixed on the horizontal positioning plate.

[0007] Further configured, the mounting bracket also includes a guide hole, and the mounting bracket is provided with a stop rod that is movably connected to the guide hole. One end of the stop rod is fixedly connected to the horizontal positioning plate, and an elastic block is fixed to the output end of the positioning screw. The elastic block is rotatably connected to the horizontal positioning plate through a bearing embedded in the horizontal positioning plate.

[0008] Further configured, the outer wall of the positioning tube is fixed with a number of connecting blocks corresponding to a number of auxiliary correction modules, and both ends of the mounting frame are provided with connecting slots, which are respectively engaged with the corresponding connecting blocks on the two positioning tubes.

[0009] Further configured, the horizontal positioning plate includes a correction surface that abuts against the surfaces of the first tube and the second tube, and the correction surface is horizontal.

[0010] A further configuration is provided where the inner wall of the positioning tube is provided with an arc-shaped groove adapted to the placement of the round tube, and the arc-shaped grooves of the two positioning tubes are arranged along the same horizontal line.

[0011] Further configured, each of the two positioning tubes is fixed with a mounting bracket installed on the ground.

[0012] By adopting the above technical solution, the beneficial effects of this utility model are as follows: By setting two coaxial positioning tubes and several auxiliary correction modules surrounding the tube body, using a horizontal positioning plate to cooperate with the tube body surface, and a bubble level to assist in correction, it is possible to ensure accurate alignment of the first and second tube bodies in the entire circumference when they are joined. This eliminates the need for two people to hold the tube body and align it at the welding point, thereby improving the joining accuracy and thus improving the quality and reliability of subsequent welding of the first and second tube bodies. At the same time, it is suitable for joining heavy pipes, reducing the difficulty and workload of manually joining two steel pipes, allowing a single person to complete the joining operation, saving time and effort, and improving work efficiency. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 This is a top view showing the two positioning tubes working in conjunction with the auxiliary correction module.

[0015] Figure 3 This is a schematic diagram of the mating structure of the first tube and the positioning tube.

[0016] Figure 4 This is a schematic diagram of the structure where the positioning tube and the arc-shaped groove fit together.

[0017] In the figure: First tube 1, Second tube 2, Positioning tube 3, Auxiliary correction module 100, Mounting bracket 4, Positioning screw 5, Horizontal positioning plate 6, Bubble level 7, Screw hole 41, Guide hole 42, Stop rod 8, Elastic block 9, Connecting block 10, Connecting groove 43, Correction surface 61, Arc groove 31, Fixing bracket 11. Detailed Implementation

[0018] Reference Figures 1 to 4 The embodiments of this utility model will be further described below.

[0019] A corrosion-resistant duplex stainless steel pipe with a correction structure includes a first pipe body 1, a second pipe body 2, and two positioning pipes 3. The first pipe body 1 and the second pipe body 2 are duplex stainless steel pipes. Several auxiliary correction modules 100 are provided between the first pipe body 1 and the second pipe body 2. The two positioning pipes 3 are coaxially arranged, and the first pipe body 1 and the second pipe body 2 move within the two positioning pipes 3 respectively. The connection ports of the first pipe body 1 and the second pipe body 2 extend from one end of their respective positioning pipes 3. The two positioning pipes 3 are coaxially arranged, and each positioning pipe 3 is fixed with a mounting bracket 11 installed on the ground. The inner diameter of the positioning pipe 3 is selected to be larger than the diameter of the pipe body to be joined. The first pipe body 1 and the second pipe body 2 move within the two positioning pipes 3 respectively, and the connection ports of the first pipe body 1 and the second pipe body 2 extend from one end of their respective positioning pipes 3. One end of the positioning tube 3 extends outwards, and several auxiliary correction modules 100 are arranged around the positioning tube 3. The auxiliary correction module 100 includes a mounting frame 4, a positioning screw 5, a horizontal positioning plate 6, and a bubble level 7. The mounting frame 4 is U-shaped, and its two ends are respectively detachably connected to the two positioning tubes 3. The mounting frame 4 includes a screw hole 41 that is threadedly connected to the positioning screw 5. An elastic block 9 is fixed at the output end of the positioning screw 5. The elastic block 9 is rotatably connected to the horizontal positioning plate 6 through a bearing embedded in the horizontal positioning plate 6. The mounting frame 4 also includes a guide hole 42. The mounting frame 4 is provided with a stop rod 8 that is movably connected to the guide hole 42. One end of the stop rod 8 is fixedly connected to the horizontal positioning plate 6. The horizontal positioning plate 6 is in surface fit with the first tube body 1 and the second tube body 2. The bubble level 7 is fixed on the horizontal positioning plate 6.

[0020] Working Principle: During the docking operation of duplex stainless steel pipes, the first pipe body 1 and the second pipe body 2 are first placed inside two coaxially arranged positioning tubes 3, allowing the two pipe bodies to move freely within the positioning tubes 3. Pushing the first pipe body 1 and the second pipe body 2 causes the connection ports of the first pipe body 1 and the second pipe body 2 to extend from one end of their respective positioning tubes 3, thereby gradually bringing the connection ports of the first pipe body 1 and the second pipe body 2 closer together and into contact. The positioning tubes 3 are supported by a fixed bracket 11 on the ground, ensuring their stability. Then, several auxiliary correction modules 100 surrounding the positioning tubes 3 are used for correction.

[0021] Specifically, the mounting bracket 4 of each auxiliary correction module 100 is U-shaped, with its two ends detachably connected to two positioning tubes 3. By rotating the positioning screw 5 of each auxiliary correction module 100, the corresponding horizontal positioning plate 6 moves along the moving direction of the positioning screw 5 until it is in close contact with the outer surfaces of the first tube 1 and the second tube 2 at both ends of the horizontal positioning plate 6. During the movement of the positioning screw 5, the stop rod 8 moves within the guide hole 42. The stop rod 8 is designed to prevent the horizontal positioning plate 6 from affecting the contact with the outer surfaces of the first tube 1 and the second tube 2 as the positioning screw 5 rotates. Due to the elastic block 9 at the output end of the positioning screw 5, if the ports of the first tube 1 and the second tube 2 are not circumferentially aligned, the horizontal positioning plate 6 will tilt. The bubble level 7 on the horizontal positioning plate 6 can intuitively display the horizontal state of the horizontal positioning plate 6, thereby reflecting the circumferential alignment of the first pipe body 1 and the second pipe body 2. Through several auxiliary correction modules 100, the first pipe body 1 and the second pipe body 2 can achieve precise circumferential alignment, eliminating the need for two people to hold the pipes and align them at the welding point. This greatly improves the docking accuracy, thereby improving the quality and reliability of subsequent welding. At the same time, it is suitable for docking scenarios with heavier pipes. The operation is the same, reducing the difficulty and workload of manually docking two steel pipes, allowing a single person to complete the docking operation, saving time and effort, and improving work efficiency.

[0022] The outer wall of the positioning tube 3 is fixed with several connecting blocks 10 corresponding to several auxiliary correction modules 100. Both ends of the mounting frame 4 are provided with connecting grooves 43. The connecting grooves 43 at both ends of the mounting frame 4 are respectively engaged with the corresponding connecting blocks 10 on the two positioning tubes 3, so as to realize the disassembly and connection of the two ends of the mounting frame 4 to the two positioning tubes 3 respectively. This facilitates the quick fixation of the mounting frame 4 on the positioning tube 3, greatly improving the installation and disassembly efficiency of the auxiliary correction modules 100. After the first tube body 1 and the second tube body 2 are properly connected, the corresponding auxiliary correction modules 100 at the welding position can be disassembled. The remaining auxiliary correction modules 100 continue to position the first tube body 1 and the second tube body 2, preventing misalignment of the first tube body 1 and the second tube body 2 during welding, which would reduce the welding quality. The remaining auxiliary correction modules 100 are disassembled in sequence for welding at the corresponding positions until a full circle of welding is completed, further improving the quality and reliability of subsequent welding.

[0023] The horizontal positioning plate 6 includes a correction surface 61 that abuts against the outer surfaces of the first tube 1 and the second tube 2. The correction surface 61 is horizontal. The horizontal correction surface 61 can contact the outer surfaces of the first tube 1 and the second tube 2 in the horizontal direction. When used in conjunction with the bubble level 7, it can more intuitively display the horizontal state of the tubes, making it easier for operators to perform correction operations quickly and accurately, thus improving work efficiency.

[0024] The inner wall of the positioning tube 3 is provided with an arc-shaped groove 31 adapted to the placement of the round tube, which facilitates the placement of the round tube in the positioning tube 3, prevents the round tube from rolling in the positioning tube 3 and affecting subsequent docking, and improves the compatibility. The arc-shaped grooves 31 of the two positioning tubes 3 are set along the same horizontal line, which facilitates the initial alignment of the first tube 1 and the second tube 2 in the horizontal direction, provides a good foundation for subsequent correction and docking operations, and further improves the docking accuracy.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant duplex stainless steel pipe with a correction structure, comprising a first pipe body (1), a second pipe body (2), and two positioning pipes (3), characterized in that, Several auxiliary correction modules (100) are provided between the first tube body (1) and the second tube body (2). The two positioning tubes (3) are coaxially arranged. The first tube body (1) and the second tube body (2) move within the two positioning tubes (3) respectively. The connection port of the first tube body (1) and the connection port of the second tube body (2) extend from one end of the corresponding positioning tube (3) respectively. Several auxiliary calibration modules (100) are arranged around the positioning tube (3). The auxiliary calibration module (100) includes a mounting bracket (4), a positioning screw (5), a horizontal positioning plate (6), and a bubble level (7). The mounting bracket (4) is U-shaped. The two ends of the mounting bracket (4) are respectively detached and connected to the two positioning tubes (3). The mounting bracket (4) includes a screw hole (41) that is threaded to the positioning screw (5). The horizontal positioning plate (6) is movably connected to the output end of the positioning screw (5). The horizontal positioning plate (6) is in contact with the surfaces of the first tube body (1) and the second tube body (2). The bubble level (7) is fixed on the horizontal positioning plate (6).

2. The corrosion-resistant duplex stainless steel pipe with a correction structure according to claim 1, characterized in that, The mounting bracket (4) also includes a guide hole (42). The mounting bracket (4) is provided with a stop rod (8) that is movably connected to the guide hole (42). One end of the stop rod (8) is fixedly connected to the horizontal positioning plate (6). An elastic block (9) is fixed at the output end of the positioning screw (5). The elastic block (9) is rotatably connected to the horizontal positioning plate (6) through a bearing embedded in the horizontal positioning plate (6).

3. The corrosion-resistant duplex stainless steel pipe with a correction structure according to claim 2, characterized in that, The outer wall of the positioning tube (3) is fixed with a number of connecting blocks (10) corresponding to a number of auxiliary correction modules (100). Both ends of the mounting bracket (4) are provided with connecting grooves (43). The connecting grooves (43) at both ends of the mounting bracket (4) are respectively engaged with the corresponding connecting blocks (10) on the two positioning tubes (3).

4. A corrosion-resistant duplex stainless steel pipe with a correction structure according to claim 3, characterized in that, The horizontal positioning plate (6) includes a correction surface (61) that abuts against the surfaces of the first tube (1) and the second tube (2), and the correction surface (61) is horizontal.

5. A corrosion-resistant duplex stainless steel pipe with a correction structure according to claim 4, characterized in that, The inner wall of the positioning tube (3) is provided with an arc-shaped groove (31) adapted to the placement of the round tube, and the arc-shaped grooves (31) of the two positioning tubes (3) are set along the same horizontal line.

6. A corrosion-resistant duplex stainless steel pipe with a correction structure according to claim 5, characterized in that, Both positioning tubes (3) are fixed with a mounting bracket (11) installed on the ground.

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