Bearing type pipe aligning device

Abstract

A pipe aligning device in a bearing form is provided with a C-shaped frame body, a set of supporting bearings are fixed in the frame body, each supporting bearing comprises an upper support and a lower support, the upper supports are fixed on a double-layer supporting plate, the upper supports are in a roller form, the lower supports are fixed on a double-layer bottom plate, and the lower supports are in a bearing form. The end of a pipe to be butted is placed between the upper support and the lower support, a transverse bubble and a longitudinal bubble are fixed to the upper surface of the double-layer bottom plate, a rack is arranged on the edge of one side of the double-layer bottom plate, the bottom of the frame body can be adjusted up and down through foundation bolts, and the two aligning devices are butted and matched for use. The sides, provided with the racks, of the two aligning device frame bodies are in butt joint to form tooth meshing, and the hand-cranking hoist is pulled to adjust the relative positions 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.

Description

Technical Field

[0001] This invention belongs to the field of offshore LNG vessel design and construction, and specifically relates to a bearing-type pipe fitting device. 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 bearing-type pipe butt welding tool, aiming to improve the butt welding accuracy of pipes with a diameter of DN150 or less and reduce operational complexity. The technical solution adopted is as follows:

[0004] A pipe fitting device in the form of a bearing has a C-shaped frame body with a set of support bearings fixed inside the frame body. The end of the pipe to be fitted is placed on the support bearings. Each set of support bearings consists of an upper support and a lower support.

[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. A toothed rack is provided on one edge of the double-layer base plate. The upper support is fixed to the double-layer support plate by double-headed studs, and the lower support is fixed to the double-layer base plate by a support plate.

[0006] The upper support has a horizontally arranged upper support base plate, with fixed pulleys fixed downward at both ends of the upper support base plate, and the two fixed pulleys forming an opening with the base plate; the lower support has a horizontally placed lower support base plate, with support side plates fixed on both sides of the lower support base plate. The support side plates are curved, and rolling bearings are embedded in the support side plates. The rolling bearings on both sides are symmetrically arranged.

[0007] 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.

[0008] Furthermore, in the aforementioned type of bearing-type pipe fitting, the top of the upper support is fixedly connected to one end of a double-ended stud, and the other end of the double-ended stud penetrates the double-layer support plate from bottom to top and is fixed in conjunction with the top nut. The double-ended stud can move up and down relative to the double-layer support plate.

[0009] Furthermore, in the aforementioned type of bearing-type pipe fitting, the support plate passes through the double-layer base plate in sequence and is welded and fixed to the double-layer base plate.

[0010] Furthermore, in the aforementioned type of bearing-type pipe fitting, washers are provided on both the upper and lower surfaces of the double-layer base plate at the anchor bolt location.

[0011] Furthermore, in the aforementioned type of bearing-shaped pipe fitting device, the pipe to be fitted is placed between the upper support and the lower support.

[0012] Furthermore, in the aforementioned type of bearing-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.

[0013] Furthermore, in the aforementioned type of bearing-type pipe fitting, two support side plates are provided on each side of the lower support base plate, with a gap between the two support side plates.

[0014] Furthermore, in the aforementioned type of bearing-based 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 rolling bearing of the lower support tangent to the outer surface of the pipe to be fitted.

[0015] The beneficial effects of this invention are:

[0016] 1. The new design uses bearings to contact the tube, resulting in four points of contact with the tube's cross-section, which improves accuracy compared to three coplanar points. The new design also reduces the number of adjustment points for locking the tube, eliminating the cumbersome process and time required for multiple set screw adjustments.

[0017] 2. The bearing is tangential to the outer wall of the pipe and contacts the outer wall of the pipe along the pipe axis, ensuring pipe fixation and welding stability. This ensures welding precision and guarantees the pipe's horizontality during butt welding.

[0018] 3. This invention is easy to operate and has a wide range of applications. By adjusting the height of the bearing opening with a stud and nut, it can be used for pipes with a diameter of DN150 or less. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 This is a side view of the structure of the present invention;

[0021] Among them, 1-frame main body, 2-double-layer support plate, 3-double-layer bottom plate, 4-upper support, 5-lower support bottom plate, 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, 15-anchor bolt, 16-adjusting nut, 17-upper support bottom plate, 18-fixed pulley, 19-rolling bearing, 20-support side plate. Detailed Implementation

[0022] The invention will be further described with reference to the accompanying drawings.

[0023] A type of bearing-type pipe fitting, such as Figure 1 , 2 As shown, there is a C-shaped frame main body, with a set of support bearings fixed inside. The pipes to be connected are placed on the support bearings. The top of the frame main body has a double-layer support plate, and the bottom has a double-layer base plate. A rack is provided on one edge of the double-layer base plate. Each set of support bearings has an upper support and a lower support. The upper support is fixed to the double-layer support plate by double-ended studs. The top of the upper support is fixedly connected to one end of the double-ended stud, and the other end of the double-ended stud penetrates the double-layer support plate from bottom to top, cooperating with the top nut for fixation. The double-ended stud can move up and down relative to the double-layer support plate. Horizontal and vertical bubble structures are fixed to the upper surface of the double-layer base plate.

[0024] The upper support has a horizontally arranged upper support base plate, with fixed pulleys at both ends of the upper support base plate, forming an opening with the base plate, and the opening of the upper support facing downwards. The lower support has a horizontally placed lower support base plate, with support side plates fixed on both sides of the lower support base plate. The support side plates are curved, and rolling bearings are embedded in the support side plates. The rolling bearings on both sides are symmetrically arranged, and the lower support base plate and the support side plates form an opening with the lower support facing upwards.

[0025] 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.

[0026] Anchor bolts are fixed at the bottom of the main frame. The anchor bolts penetrate the double-layer base plate from bottom to top and are fixed in place with anchor nuts.

[0027] The usage method is as follows:

[0028] 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.

[0029] 2. Loosen the top nut and place the two tubes into the lower support, respectively, and seat them on the opening of the lower support. Adjust the top nut to clamp the double-ended stud. The rolling bearing of the lower support is tangential to the outside of the tube. The upper and lower supports 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.

[0030] 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 pipe aligner in the form of a bearing, characterized in that The utility model provides a C type frame body (1), a group of support bearings are fixed in the frame body, and the end of the pipe (12) to be butt joint is placed on the support bearings, each group of support bearings is composed of upper support (4) and lower support; The frame body top is provided with double layer support plate (2), the bottom is provided with double layer bottom plate (3), the upper surface of double layer bottom plate is fixed with transverse water bubble (8) and longitudinal water bubble (7), one side edge of double layer bottom plate is provided with rack (10), the upper support is fixed on double layer support plate through stud bolt (6), and the lower support is fixed on double layer bottom plate through support plate (14); The upper support is provided with the upper support bottom plate (17) arranged transversely, the both ends of the upper support bottom plate are fixed downward with the fixed pulley, and the fixed pulley forms an opening with the bottom plate;The lower support is provided with the lower support bottom plate (5) arranged horizontally, the both sides of the lower support bottom plate are fixed with the support side plate (20), the support side plate is provided with an arc, the support side plate is embedded with the rolling bearing, and the rolling bearings on the both sides are symmetrically arranged; The frame body bottom is fixed with anchor bolt (15), the anchor bolt penetrates double layer bottom plate from bottom to top in sequence, and is fixed with anchor nut (9) at the top and adjusting nut (16) at the bottom; Two mouth aligning devices are used in conjunction, the side of the frame body of two mouth aligning devices with rack is connected oppositely, forms tooth engagement, and the frame body is fixed with hand-operated hoist, and the relative position of two mouth aligning devices is adjusted by pulling hand-operated hoist.

2. A pipe aligner in the form of a bearing according to claim 1, characterised in that The top of the upper support is fixedly connected with one end of the stud bolt, the other end of the stud bolt penetrates the double layer support plate from bottom to top in sequence, and is fixed with top nut, and the stud bolt can move up and down relative to the double layer support plate.

3. A pipe butt connector in the form of a bearing according to claim 1, characterised in that The support plate penetrates the double layer bottom plate in sequence and is welded and fixed with the double layer bottom plate.

4. A pipe butt connector in the form of a bearing according to claim 1, characterised in that The upper surface and the lower surface of the double layer bottom plate at the anchor bolt are both provided with gasket (13).

5. A pipe aligner in the form of a bearing according to claim 1, characterised in that The pipe to be butt joint is placed in the middle of the upper support and the lower support.

6. A pipe butt connector in the form of a bearing according to claim 1, characterised in that The anchor nut is located on the upper surface of the double layer bottom plate, and the adjusting nut is located on the lower surface of the double layer bottom plate.

7. A pipe butt connector in the form of a bearing according to claim 1, characterised in that Two support side plates are arranged on the both sides of the lower support bottom plate respectively, and there is a spacing between the two support side plates.

8. A pipe butt connector in the form of a bearing according to claim 1, characterised in that The pipe to be butt joint is placed in the middle of 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 butt joint, and the rolling bearing of the lower support is tangent to the outer surface of the pipe to be butt joint.

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