A welding auxiliary device for a riser flange

Abstract

The utility model discloses a kind of water pipe flange plate welding auxiliary devices, it is related to the field of auxiliary welding, device includes base, first support rod is fixed on base, second support rod is set on first support rod by first slider sleeve, fixture disc is slidably connected on second support rod by second slider. The spatial position in device can be adjusted by the movement of first slider and second slider to fixture disc, and first slider and second slider are equipped with locking device, ensure that the relative position of fixture disc clamping flange plate is stable, axial telescopic device and radial support structure in the center of fixture disc, improve the coaxiality of flange plate and water pipe, ensure the precision of group and welding.

Description

Technical Field

[0001] This utility model relates to the field of flange welding, specifically to an auxiliary device for welding riser flanges. Background Technology

[0002] Multiple flanges need to be welded onto the riser pipe in oil and gas drilling. Due to factors such as thermal expansion and contraction during welding, the relative positions of the flanges change, affecting weld quality and overall product performance. Existing welding methods cannot guarantee that the flanges maintain a fixed relative position during welding, making it difficult to control product precision.

[0003] To address the problems existing in the prior art, this utility model designs an auxiliary device for welding riser flanges, which can effectively ensure the relative positional relationship of the flanges on the riser during welding, and at the same time ensure the coaxiality of the flanges and the riser pipe, improve welding accuracy, and overcome the above-mentioned defects. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes an auxiliary device for welding the riser pipe and flange in a riser pipe product. This device fixes the flange by setting a clamping plate, adjusting and locking the spatial position of the clamping plate on the device, thereby fixing the flange at the welding position of the riser pipe. At the same time, the support structure is used to strengthen the coaxial constraint between the flange and the riser pipe, improving the positional accuracy of the assembled welding flange.

[0005] This utility model provides an auxiliary device for welding a water-tight pipe flange, characterized in that it includes:

[0006] A base, on which a first support rod is fixed, and a first slider is sleeved on the first support rod; a second support rod is fixedly connected to the first slider;

[0007] The clamping plate is slidably connected to the second support rod via a second slider. The clamping plate has multiple arc-shaped elongated holes evenly distributed around its circumference. The clamping plate is used to hold the flange. The clamping plate can adjust its spatial position by moving the first slider and the second slider. An axial telescopic device is fixed at the center of the clamping plate, and a radial support structure is installed on the axial telescopic device.

[0008] Both the first and second sliders are equipped with locking structures.

[0009] Furthermore, both the first and second support rods are equipped with servo motors, and the first and second sliders are respectively connected to the servo motors in the first and second support rods via lead screws.

[0010] Furthermore, the clamping disc is fastened to the flange by bolts, the bolts are inserted into the arc-shaped elongated hole, and a gasket is provided between the bolts and the clamping disc.

[0011] Furthermore, the locking structure includes a locking bolt, and an elastic element is sleeved at the end of the locking bolt.

[0012] Furthermore, multiple clamping discs can be provided, and multiple clamping discs can adjust the welding position of multiple flanges.

[0013] Furthermore, the base is equipped with casters at its bottom for easy movement of the device.

[0014] Furthermore, the axial telescopic device is configured as a hydraulic cylinder, and a radial support structure is connected between the cylinder body and the telescopic rod.

[0015] Furthermore, the radial support structure is a linkage structure, with the first linkage of the radial support structure hinged to the cylinder body, the second linkage of the radial support structure hinged to the end of the telescopic rod, and the first linkage hinged to the second linkage.

[0016] Furthermore, multiple sets of radial support structures are evenly distributed along the circumference of the telescopic rod, and the radial support height of the radial support structure can be adjusted as the telescopic rod extends or retracts.

[0017] Furthermore, an elastic pad is provided at the hinge joint between the first link and the second link.

[0018] The advantages of this utility model are:

[0019] 1. By moving the positions of the first and second sliders, the spatial position of the clamping plate fixing the flange can be flexibly adjusted. Both the first and second sliders are equipped with locking structures to maintain the stability of the clamping plate position and ensure reliable positioning. Multiple clamping plates can be set, and multiple clamping plates can be adjusted and used simultaneously to ensure the relative position of multiple flanges for welding. In addition, the radial support structure can also constrain the coaxiality of the flange and the pipeline, reduce welding misalignment error, and improve the accuracy of assembly welding.

[0020] 2. The clamping plate has multiple sets of arc-shaped long holes evenly distributed around its circumference, which can be rotated and adjusted for fastening according to the welding position of the flange. In addition, the clamping plate is detachable, and the appropriate size clamping plate can be selected according to the size of the flange, which increases the versatility of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a welding auxiliary device for a water-proof pipe flange according to the present invention;

[0022] Figure 2This is a schematic diagram of a fixture for assembling a flange and a water-proof pipe in a welding auxiliary device for a water-proof pipe according to the present invention.

[0023] Figure 3 This is a cross-sectional schematic diagram of a fixture for assembling a flange and a water-proof pipe in a welding auxiliary device for a water-proof pipe according to the present invention.

[0024] Figure 4 This is a schematic diagram of the radial support structure of the auxiliary device for welding flanges of a riser pipe according to this utility model, showing its support inside the riser pipe.

[0025] In the diagram: 1. Base; 2. First support rod; 3. First slider; 4. Second support rod; 5. Fixture plate; 6. Second slider; 7. Arc-shaped elongated hole; 8. Flange; 9. Gasket; 10. Locking bolt; 11. Cylinder body; 12. Telescopic rod; 13. Radial support structure; 14. Water-proof pipe; 15. First connecting rod; 16. Second connecting rod. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.

[0030] In this utility model, terms such as "fixed connection," "connected," and "joined" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.

[0031] As described in the background section, when welding flanges onto water-supporting pipes, the relative positions of the flanges change due to factors such as thermal expansion and contraction during the welding process, affecting the welding quality and product performance.

[0032] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0033] like Figure 1 As shown, a welding auxiliary device for a water-tight pipe flange includes a base 1, a first support rod 2 fixed on the base 1, a counterweight that can be installed inside the base 1 to increase the stability of the device, and rollers that can be installed at the bottom of the base 1 to facilitate the movement of the entire device.

[0034] The first support rod 2 is vertically mounted on the base 1. A first slider 3, which can move vertically up and down along the first support rod 2, is sleeved on the first support rod 2. A lead screw can be installed inside the first support rod 2. The lead screw is connected to an external servo motor. The first slider 3 is connected to the lead screw inside the first support rod 2. The servo motor drives the first slider 3 to move up and down.

[0035] A second support rod 4 is fixedly connected to the side of the first slider 3. A second slider 6 is slidably sleeved on the second support rod 4, and a clamping plate 5 is fixedly connected to the second slider 6. The second support rod 4 is horizontally positioned, and a lead screw can also be installed inside the second support rod 4. The second slider 6 is connected to a servo motor through the lead screw inside the second support rod 4. The servo motor drives the lead screw to move the second slider 6 horizontally on the second support rod 4. Elongated holes can be opened on the first support rod 4 and the second support rod 6 to facilitate the connection of the first slider 3 and the second slider 6 to the lead screw.

[0036] The fixture disk 5 has multiple arc-shaped elongated holes 7 evenly distributed around its circumference. One side of the fixture disk 5 is fixedly connected to the second slider 6, and the other side is fastened to the flange 8 by bolts. The bolts pass through the annular elongated holes 7 of the fixture disk 5 to connect the flange 8 and the fixture disk 5 into a whole. A gasket 9 is provided between the fixture disk 5 and the bolts to prevent damage to the fixture disk 5 and the workpiece when the bolts are tightened.

[0037] Both the first slider 3 and the second slider 6 are equipped with locking structures on their sides. These locking structures consist of locking bolts 10, which are located on the sides of the first slider 3 and the second slider 6, perpendicular to the lead screw structure within the first support rod 2 or the second support rod 4. An elastic element is fitted at the end of the locking bolt 10. By rotating, the end of the locking bolt 10 abuts against the lead screw for locking. The elastic element prevents rigid contact between the locking bolt 10 and the lead screw, providing flexible protection. The spatial position of the flange 8, fastened to the clamping plate 5, can be adjusted by adjusting the vertical position of the first slider 3 and the horizontal position of the second slider 6.

[0038] like Figure 2 As shown, after one end of the flange 8 is fastened to the clamp plate 5, the other end is butt-welded to the water-proof pipe 14 group, and the flange 8 and the water-proof pipe 14 group are welded together.

[0039] like Figure 1 , Figure 3 and Figure 4 As shown, an axial telescopic device is fixed at the center of the clamping disc 5. The axial telescopic device can pass through the center of the flange 8 and extend and retract along the axial direction of the water-tight pipe 14 inside the water-tight pipe 14. A radial support structure 13 is installed on the axial telescopic device to adjust the radial support height. The radial direction is the radial direction inside the water-tight pipe 14. The axial telescopic device is configured as a hydraulic cylinder, and the radial support structure 13 is connected between the cylinder body 11 and the telescopic rod 12. The radial support structure 13 is a linkage hinge structure, wherein one end of the first connecting rod 15 is hinged to the cylinder body 11, and the other end is hinged to the second connecting rod 16. The end of the second connecting rod 16 away from the first connecting rod 15 is hinged to the end of the telescopic rod 12 of the hydraulic cylinder. The hydraulic cylinder extends and retracts axially within the riser pipe 14 via the telescopic rod 12, thereby causing the first connecting rod 15 and the second connecting rod 16 to change their axial spacing within the pipe. This adjusts the radial support height of the first connecting rod 15 and the second connecting rod 16 within the riser pipe 14, making it suitable for internal support of riser pipes 14 of different diameters. This improves the coaxiality accuracy between the riser pipe 14 and the flange 8. An elastic pad can be installed at the hinge joint of the first connecting rod 15 and the second connecting rod 16, allowing for flexible contact with the inner wall of the riser pipe 14 and preventing damage. Multiple sets of radial support structures 13 can be evenly distributed along the circumference of the telescopic rod 12. These multiple sets of radial support structures 13 synchronously adjust their radial support height as the telescopic rod 12 extends and retracts.

[0040] The specific process of the auxiliary device for welding a water-tight pipe flange according to this utility model is as follows: First, the flange 8 is clamped on the clamping plate 5 and assembled and tightened using bolts, nuts and washers 9. Then, the first slider 3 or the second slider 6 is moved to adjust the relative position of the flange 8. After the position is adjusted, the slider is locked using the locking structure to ensure the position of the flange 8. After the flange 8 is connected to the water-tight pipe 14, the telescopic rod 12 of the axial telescopic device cylinder retracts, driving the connecting rod structure of the radial support structure 13 to adjust the support height until the elastic pad at the hinge of the connecting rod structure contacts the inner wall of the supporting water-tight pipe 14. After stabilization, the flange 8 and the water-tight pipe 14 are welded. After welding, the relative position of the flange 8 is checked to ensure that it meets the technical requirements.

[0041] The above description is merely an embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0042] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A welding auxiliary device for a water-proof pipe flange, characterized in that, include: A base (1) is provided with a first support rod (2) fixed on the base, and a first slider (3) is sleeved on the first support rod (2); a second support rod (4) is fixedly connected to the first slider (3). The clamping disk (5) is slidably connected to the second support rod (4) via the second slider (6). The clamping disk (5) has a plurality of arc-shaped long holes (7) evenly distributed in the circumferential direction. The clamping disk (5) is used to clamp the flange (8). The clamping disk (5) can be adjusted in space by the movement of the first slider (3) and the second slider (6). An axial telescopic device is fixed at the center of the clamping disk (5). A radial support structure (13) is installed on the axial telescopic device. Both the first slider (3) and the second slider (6) are provided with locking structures.

2. The auxiliary device for welding a water-tight pipe flange according to claim 1, characterized in that, The first support rod (2) and the second support rod (4) are each equipped with a servo motor. The first slider (3) and the second slider (6) are respectively connected to the servo motors in the first support rod (2) and the second support rod (4) through lead screws.

3. The auxiliary device for welding a water-tight pipe flange according to claim 2, characterized in that, The clamping disc (5) is fastened to the flange (8) by bolts, the bolts are inserted into the arc-shaped long hole (7), and a gasket (9) is provided between the bolts and the clamping disc (5).

4. The auxiliary device for welding a water-tight pipe flange according to claim 3, characterized in that, The locking structure includes a locking bolt (10), and an elastic element is sleeved at the end of the locking bolt (10).

5. The auxiliary device for welding a water-tight pipe flange according to claim 1, characterized in that, Multiple clamping discs (5) can be provided, and multiple clamping discs (5) can adjust the welding position of multiple flanges (8).

6. The auxiliary device for welding a water-tight pipe flange according to claim 1, characterized in that, The base (1) is equipped with wheels at the bottom to facilitate the movement of the device.

7. The auxiliary device for welding a water-tight pipe flange according to claim 5, characterized in that, The axial telescopic device is configured as a hydraulic cylinder, and a radial support structure (13) is connected between the cylinder body (11) and the telescopic rod (12).

8. The auxiliary device for welding a water-tight pipe flange according to claim 7, characterized in that, The radial support structure (13) is a linkage structure. The first linkage (15) of the radial support structure (13) is hinged to the cylinder (11), and the second linkage (16) of the radial support structure (13) is hinged to the end of the telescopic rod (12). The first linkage (15) and the second linkage (16) are hinged together.

9. The auxiliary device for welding a water-tight pipe flange according to claim 8, characterized in that, The radial support structure (13) is evenly distributed in multiple sets along the circumference of the telescopic rod (12), and the radial support height of the radial support structure (13) can be adjusted as the telescopic rod (12) extends and retracts.

10. The auxiliary device for welding a water-tight pipe flange according to claim 8, characterized in that, An elastic pad is provided at the hinge joint between the first link (15) and the second link (16).

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