Roller type pipe aligning device

Abstract

A pipe aligning device in a roller mode is provided with a C-shaped frame body, a set of supporting rollers are fixed in the frame body, each supporting roller comprises an upper support and a lower support, the upper supports are fixed to a double-layer supporting plate, the lower supports are fixed to a double-layer bottom plate, and the ends of pipes to be in butt joint are placed between the upper supports and the lower supports. Transverse bubbles and longitudinal bubbles are fixed to the upper surface of the double-layer bottom plate, racks are arranged on the edge of one side of the double-layer bottom plate, the bottoms of the frame bodies can be adjusted up and down through foundation bolts, the two aligning devices are in butt joint and used in a matched mode, and the sides, with the racks, of the frame bodies of the two aligning devices are in butt joint to form tooth meshing. And the hand-cranking hoist is pulled to adjust the relative position of the two aligning devices. The device is in four-point contact with the section of the pipe to be butted, compared with three-point coplanar, the precision is improved, the number of locking and adjusting nodes of the pipe is small, and the procedure complexity and the adjusting time of multi-jackscrew adjusting are omitted. And the welding stability and the levelness during butt joint of the pipes are ensured.

Description

Technical Field

[0001] This invention belongs to the field of offshore LNG vessel design and construction, and specifically relates to a roller-type pipe aligner. Background Technology

[0002] During pipe butt welding, ensuring concentricity of the pipe ends is crucial. Existing double-sided setter butt welding devices have numerous setter nodes, requiring adjustment of many setters and resulting in lengthy adjustment times. Tightening force also affects butt welding accuracy. The design of these setter butt welding devices is suitable for large-diameter pipes in the petroleum system but not for smaller-diameter pipes in shipbuilding. Furthermore, these devices lack pipe leveling adjustment functionality. This patent addresses the issues of accuracy and operational complexity in butt welding of pipes DN150 and below, improving construction efficiency and welding precision. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a roller-type pipe butt welding tool, aiming to improve the precision of butt welding of pipes with a diameter of DN150 or less and reduce operational complexity. The technical solution adopted is as follows:

[0004] A roller-type pipe fitting device has a C-shaped frame body with a set of support rollers fixed inside the frame body. The end of the pipe to be fitted is placed on the support rollers. Each set of support rollers has an upper support and a lower support with the same structure.

[0005] The main frame has a double-layer support plate at the top and a double-layer base plate at the bottom. The upper surface of the double-layer base plate is fixed with horizontal and vertical water bubbles, and a toothed strip is provided on one edge of the double-layer base plate.

[0006] The upper support is fixed to the double-layer support plate by double-headed studs. The first support columns are symmetrically arranged on both sides of the double-headed studs. The upper support has two rollers, which are perpendicular to each other. After the ends are connected and fixed, they are fixed to the bottom of the double-headed studs. The other end of the two rollers is provided with a first sleeve, which is fitted onto the first support column. The first sleeve can slide up and down along the first support column. The opening formed by the two rollers of the upper support faces downward.

[0007] The lower support is fixed to the double-layer base plate by a support plate. The second support columns are symmetrically arranged on both sides of the support plate. The lower support has two rollers, which are perpendicular to each other. After the ends are connected and fixed, they are fixed to the top of the support plate. The other end of the two rollers is provided with a second sleeve, which is fitted onto the second support column. The second sleeve can slide up and down along the second support column. The opening formed by the two rollers of the lower support faces upward.

[0008] The bottom of the main frame is fixed with anchor bolts, which penetrate the double-layer base plate from bottom to top. The top is fixed with the anchor nut and the bottom is fixed with the adjusting nut.

[0009] Two matching devices are used in conjunction. The rack-equipped sides of the two matching device frames are aligned to form a toothed mesh. A hand-cranked hoist is fixed to the frame body. Pulling the hand-cranked hoist adjusts the relative position of the two matching devices. The rack misalignment is adjusted by pulling the hand-cranked hoist to make the cores of the two pipes align. The levelness of the frame is adjusted by adjusting the relative positions of the anchor bolts and anchor nuts, and adjusting the nuts, so that the cores of the pipes are level. This is verified by transverse and longitudinal bubble pressure tests.

[0010] Furthermore, in the aforementioned roller-type pipe fitting device, the top of the double-ended stud penetrates the double-layer support plate sequentially from bottom to top and is fixed in place with the top nut. The double-ended stud can move up and down relative to the double-layer support plate.

[0011] Furthermore, in the aforementioned roller-type pipe fitting device, the support plate passes through the double-layer base plate in sequence and is welded and fixed to the double-layer base plate.

[0012] Furthermore, in the aforementioned roller-type pipe fitting, washers are provided on both the upper and lower surfaces of the double-layer base plate at the anchor bolt location.

[0013] Furthermore, in the aforementioned roller-type pipe fitting device, the pipe to be fitted is placed between the upper support and the lower support.

[0014] Furthermore, in the aforementioned roller-type pipe fitting, the anchor nut is located on the upper surface of the double-layer base plate, and the adjusting nut is located on the lower surface of the double-layer base plate.

[0015] Furthermore, in the aforementioned roller-type pipe fitting device, the first support column and the second support column are round steel columns, the length of the first support column is greater than the length of the double-ended stud, and the length of the second support column is greater than the height of the support plate.

[0016] Furthermore, in the aforementioned roller-type pipe fitting device, the pipe to be fitted is placed between the upper support and the lower support, with the two rollers of the upper support tangent to the outer surface of the pipe to be fitted, and the two rollers of the lower support tangent to the outer surface of the pipe to be fitted.

[0017] Furthermore, in the aforementioned roller-type pipe fitting device, both the free ends of the first support column and the second support column are equipped with sealing plates.

[0018] The beneficial effects of this invention are:

[0019] 1. Using angle steel to contact the pipe results in four points of contact with the pipe cross-section, improving accuracy compared to three coplanar points. The new design reduces the number of locking and adjustment points with the pipe, eliminating the cumbersome process and time required for multiple set screw adjustments.

[0020] 2. The angle steel is tangential to the outer wall of the pipe and contacts the outer wall of the pipe along the pipe axis to ensure pipe fixation and welding stability. This ensures high welding precision and guarantees the horizontality of the pipe during butt welding.

[0021] 3. This invention is easy to operate and has a wide range of applications. The height of the upper opening of the angle steel can be adjusted by the stud and nut, making it suitable for pipes with a diameter of DN150 or less. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 This is a side view of the structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention viewed from below;

[0025] Among them, 1-frame main body, 2-double-layer support plate, 3-double-layer bottom plate, 4-upper support, 5-lower support, 6-double-headed stud, 7-longitudinal bubble, 8-transverse bubble, 9-anchor nut, 10-rack, 11-top nut, 12-connector to be connected, 13-washer, 14-support plate, 17-anchor bolt, 18-adjusting nut, 19-first support column, 20-second support column, 21-first sleeve, 22-second sleeve, 25-sealing plate. Detailed Implementation

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

[0027] A type of roller-type pipe connector, such as Figure 1 , 2 As shown, there is a C-shaped frame body, inside which a set of support rollers are fixed, and the pipes to be connected are placed on the support rollers respectively. The top of the frame body is provided with a double-layer support plate, and the bottom is provided with a double-layer base plate. Each set of support rollers has an upper support and a lower support with the same structure. The upper surface of the double-layer base plate is fixed with transverse and longitudinal water bubbles.

[0028] The upper support is fixed to the double-layer support plate by double-ended studs. The top of the double-ended studs penetrates the double-layer support plate from bottom to top and is fixed with the top nut. The double-ended studs can move up and down relative to the double-layer support plate. Symmetrically arranged on both sides of the double-ended studs are first support columns. The upper support has two rollers, perpendicular to each other, whose ends are connected and fixed to the bottom of the double-ended studs. The other end of the two rollers is provided with a first sleeve, which fits onto the first support column and can slide up and down along the first support column. The opening formed by the two rollers of the upper support faces downwards. The lower support is fixed to the double-layer base plate by a support plate. Symmetrically arranged on both sides of the support plate are second support columns. The lower support has two rollers, perpendicular to each other, whose ends are connected and fixed to the top of the support plate. The other end of the two rollers is provided with a second sleeve, which fits onto the second support column and can slide up and down along the second support column. The opening formed by the two rollers of the lower support faces upwards.

[0029] A toothed rack is provided on one edge of the double-layer base plate. Two mouthpieces are used in conjunction with each other. The toothed sides of the main frame of the two mouthpieces are connected to each other to form a tooth mesh. A hand-cranked hoist is fixed on the main frame. Pulling the hand-cranked hoist adjusts the relative position of the two mouthpieces.

[0030] like Figure 3 As shown, the bottom of the main frame is fixed with anchor bolts, which penetrate the double-layer bottom plate from bottom to top and are fixed with anchor nuts.

[0031] The usage method is as follows:

[0032] 1. Adjust the level of the main frame by observing the horizontal and vertical bubbles, and adjust the four anchor bolts up and down. Adjust the anchor bolts to make the double-layer base plate level, and then tighten the anchor nuts.

[0033] 2. Loosen the top nut and place the two tubes into the lower support, sitting them on the opening of the lower support. Adjust the top nut to clamp the double-ended stud. The two rollers of the lower support are tangential to the outside of the tube, and the rollers contain the tube along its axial direction, fixing the tube in place. Adjust the rack to fine-tune the left-right misalignment of the two tubes.

[0034] 3. Weld the pipe seam. After the pipe section is welded, loosen the top nut, move the upper support upward, and rotate the pipe until the repair weld is completed.

Claims

1. A roller-type pipe fitting device, characterized in that, There is a C-shaped frame body (1), and a set of support rollers is fixed inside the frame body. The end of the pipe (12) to be connected is placed on the support rollers. Each set of support rollers has an upper support (4) and a lower support (5) with the same structure. The main frame is provided with a double-layer support plate (2) at the top and a double-layer bottom plate (3) at the bottom. A transverse bubble (8) and a longitudinal bubble (7) are fixed on the upper surface of the double-layer bottom plate. A toothed rack (10) is provided on one side edge of the double-layer bottom plate. The upper support is fixed to the double-layer support plate by a double-headed stud (6). The first support column (19) is symmetrically arranged on both sides of the double-headed stud. The upper support has two rollers (23). The two rollers are perpendicular to each other. After the ends are connected and fixed, they are fixed to the bottom of the double-headed stud. The other end of the two rollers is provided with a first sleeve (21). The first sleeve is fitted on the first support column. The first sleeve can slide up and down along the first support column. The opening formed by the two rollers of the upper support is downward. The lower support is fixed to the double-layer base plate by a support plate. The second support column (20) is symmetrically arranged on both sides of the support plate. The lower support has two rollers (23). The two rollers are perpendicular to each other. After the ends are connected and fixed, they are fixed to the top of the support plate. The other end of the two rollers is provided with a second sleeve (22). The second sleeve is fitted on the second support column. The second sleeve can slide up and down along the second support column. The opening formed by the two rollers of the lower support is upward. Anchor bolts (17) are fixed at the bottom of the main frame. The anchor bolts penetrate the double bottom plate from bottom to top. The top is fixed with the anchor nut (9) and the bottom is fixed with the adjusting nut (18). The two mouthpieces are used together. The toothed sides of the main frame of the two mouthpieces are connected to each other to form a toothed engagement. A hand-cranked hoist is fixed on the main frame. Pulling the hand-cranked hoist adjusts the relative position of the two mouthpieces.

2. The roller-type pipe fitting according to claim 1, characterized in that, The top of the double-ended stud penetrates the double-layer support plate from bottom to top and is fixed with the top nut. The double-ended stud can move up and down relative to the double-layer support plate.

3. A roller-type pipe fitting device according to claim 1, characterized in that, The support plate passes through the double-layer base plate in sequence and is welded and fixed to the double-layer base plate.

4. A roller-type pipe fitting device according to claim 1, characterized in that, Washers (13) are provided on both the upper and lower surfaces of the double-layer base plate at the anchor bolt location.

5. A roller-type pipe fitting device according to claim 1, characterized in that, The pipe to be connected is placed between the upper and lower supports.

6. A roller-type pipe fitting device according to claim 1, characterized in that, Anchor nuts are located on the upper surface of the double-layer base plate, and adjusting nuts are located on the lower surface of the double-layer base plate.

7. A roller-type pipe fitting according to claim 1, characterized in that, The first and second support columns are round steel columns. The length of the first support column is greater than the length of the double-ended stud, and the length of the second support column is greater than the height of the support plate.

8. A roller-type pipe fitting device according to claim 1, characterized in that, The pipe to be connected is placed between the upper support and the lower support. The two rollers of the upper support are tangent to the outer surface of the pipe to be connected, and the two rollers of the lower support are tangent to the outer surface of the pipe to be connected.

9. A roller-type pipe fitting according to claim 1, characterized in that, Both the free ends of the first and second support columns are equipped with sealing plates.

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