Auxiliary device for oil pipeline welding and use method thereof

Abstract

The present invention relates to the technical field of oil pipeline welding and discloses an auxiliary device for oil pipeline welding and a method for using the device. The device comprises five parts: a fixed beam, a clamp structure, a diagonal structure, a sliding device, and a gantry device. The fixed beam is fixedly installed above the welded pipeline via the clamp structure. The lower bottom surface of the fixed beam is arranged in an arc shape to match the surface of the welded pipeline. A sliding rod is fixedly installed at the right end of the fixed beam. The surface of the sliding rod is slidably connected to the sliding device. The pipeline to be welded is hoisted below the sliding device via a clamp device. The right end of the pipeline to be welded is hoisted via the gantry device. The sliding device and the fixed beam are connected above via the diagonal structure. The device has the advantages of being compact, simple in structure, easy to assemble and disassemble, and convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pipeline welding, in particular to an auxiliary device for oil pipeline welding and a use method thereof. Background Art

[0002] Petroleum refers to a mixture of gaseous, liquid, and solid hydrocarbons, specifically classified as crude oil, natural gas, natural gas liquids, and natural tar. Primarily used as fuel and gasoline, it is also a raw material for many chemical products, including solutions, fertilizers, pesticides, and plastics. Petroleum products play a wide range of roles and functions in socioeconomic development, and the products derived from their extraction have permeated and become integral to every aspect of our lives. With the development of oil exploration and production, the oil transportation industry has also flourished.

[0003] The current method of oil transportation is pipeline transportation, which involves laying multiple pipelines along the transportation route, ensuring both the transport and transfer of oil and its protection. Compared to land-based transportation methods such as rail and road transportation, pipeline transportation offers advantages such as large capacity, good airtightness, low cost, and high safety. To reduce transportation costs, pipeline transportation is often used for long-distance oil transportation. Long-distance oil pipelines are assembled by welding together short sections of pipe.

[0004] Because oil pipelines are made of heavy metal and are difficult to install, pre-weld seam alignment has traditionally been performed using cranes or differential hoists. These auxiliary tools and equipment are significantly limited in their use. Since most of my country's oil production is located in the central and western regions, where the terrain is steep, large machinery and equipment are difficult to transport, making welding more difficult and increasing the workload for workers. To address these challenges, the present invention provides an auxiliary device for oil pipeline welding that features a compact design, simple structure, easy assembly and disassembly, and convenient operation. It is specifically designed to assist with welding on hillside pipelines. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides an auxiliary device for oil pipeline welding and a method for using the same.

[0007] (2) Technical solution

[0008] To solve the above problems, the present invention provides the following technical solutions: an auxiliary device for oil pipeline welding and a method for using the same, comprising five parts: a fixed beam, a clamp structure, a cable-stayed structure, a sliding device, and a gantry device. The fixed beam is fixedly installed above the welded pipeline by the clamp structure. The lower bottom surface of the fixed beam is arc-shaped and matches the surface of the welded pipeline. A sliding rod is fixedly installed at the right end of the fixed beam. The surface of the sliding rod is slidably connected to the sliding device. The pipeline to be welded is hoisted below the sliding device by the clamp device. The right end of the pipeline to be welded is hoisted by the gantry device. The sliding device and the upper part of the fixed beam are connected by the cable-stayed structure.

[0009] Preferably, the clamp structure includes a first clamp, a second clamp and a third clamp, the first clamp and the second clamp are hinged below the fixed beam, the first clamp and the second clamp are each composed of two arc-shaped clamp arms, and the two arc-shaped clamp arms on the first clamp and the second clamp are fixed together by fastening bolts.

[0010] Preferably, a plurality of clamping holes are opened on the right side of the second clamp, and a clamping plate is clamped inside the clamping hole. The clamping plate is stepped and has an arc-shaped inner side. The inner side of the clamping plate contacts the outer side of the welded pipe.

[0011] Preferably, the shape of the third clamp is arc-shaped and matches the outer wall of the pipe to be welded. There are two third clamps, and the two third clamps are fixedly installed on the sliding device. The bottoms of the two third clamps are connected together by wire drawing, and the wire drawing is sleeved on the bottom of the pipe to be welded.

[0012] Preferably, the sliding device includes a sliding block, which is slidably connected to the surface of the sliding rod. The front and rear sides of the sliding block are hinged with connecting rods, the end of the connecting rod is hinged with a push rod, and the left end of the push rod is hinged on the fixed beam.

[0013] Preferably, the inclined-stayed structure includes a sliding plate, which is fixedly installed above the fixed crossbeam. A sliding groove is provided inside the sliding plate, and a slider is slidably connected inside the sliding groove. The left end of the inclined-stayed frame is fixedly installed above the slider. The inclined-stayed frame is triangular in shape, and the right end of the inclined-stayed frame is fixedly installed on the sliding block.

[0014] Preferably, the gantry device includes a gantry, which is located at the right end of the pipe to be welded. A hoist is fixedly installed below the gantry, and a steel cable slides inside the hoist. The steel cable passes through the bottom of the pipe to be welded to lift the pipe to be welded.

[0015] Preferably, a method for using an auxiliary device for oil pipeline welding comprises the following steps:

[0016] S1: Install the fixed beam. First, open the fastening bolts on the first clamp and the second clamp respectively to separate the two clamp arms. Then install the clamp arms on the surface of the welded pipe. During installation, install the second clamp on the right end of the welded pipe. Finally, fasten the first clamp and the second clamp respectively with two fastening bolts to fix the fixed beam above the welded pipe.

[0017] S2: Install the sliding block. Slide the sliding block from the right side of the sliding rod and install it on the surface of the sliding rod. Then slide the sliding block to the position between the sliding rods. Then hinge the push rod and connecting rod to the fixed beam and sliding block respectively.

[0018] S3: Install the inclined bracket, slide the slider at the left end of the inclined bracket into the sliding groove, and then fix the right end of the inclined bracket on the top of the sliding block with bolts.

[0019] S4: Lift the pipe to be welded, pass the wire drawing through the bottom of the pipe to be welded and put it on the pipe to be welded, fasten it with bolts, and then lift the left end of the pipe to be welded. Then pass the steel cable through the bottom of the right end of the pipe to be welded, and then lift the right end of the pipe to be welded with the lifting device.

[0020] S5: longitudinally adjust the position of the pipe to be welded by adjusting the bolts on the wire drawing and the hanger on the steel cable so that the center axis of the pipe to be welded and the center axis of the welded pipe are in the same horizontal position.

[0021] S6: Axially adjust the position of the pipe to be welded. First, push the two push rods inward to reduce the angle between the two push rods, and the angle between the two connecting rods is also reduced. The straight-line distance between the two connecting rods is reduced, and the sliding block is driven to slide to the left on the sliding rod. Similarly, push the two push rods outward to make the sliding block slide to the right on the sliding rod. The sliding block slides on the sliding rod, and then the pipe to be welded can be driven to move in the same way, thereby adjusting the axial distance between the welded pipe and the welded pipe.

[0022] S7: Welding: After the welded pipe and the pipe to be welded are welded and the axial and longitudinal distances between the pipe to be welded and the pipe to be welded are adjusted, the clamping plate is clamped into the inside of the clamping hole. The inner side of the clamping plate contacts the outer wall of the welded pipe and the pipe to be welded. By clamping multiple clamping plates between the welded pipe and the pipe to be welded, the welding position of the welded pipe and the pipe to be welded can be limited to reduce the shaking generated during the welding process, and finally welding is performed.

[0023] S8: Dismantle the device. After welding is completed, dismantle the inclined structure, sliding device, clamp structure, fixed beam and gantry device in sequence.

[0024] (3) Beneficial effects

[0025] Compared with the prior art, the present invention provides an auxiliary device for oil pipeline welding and a method of using the same, which has the following beneficial effects:

[0026] 1. This auxiliary device for oil pipeline welding and its use method, by providing a fixed crossbeam, a clamp structure, a diagonal structure, a sliding device and a gantry device, can adjust the longitudinal and axial orientations of the pipeline to be welded so that it corresponds to the welded portion of the welded pipeline, providing a stable support structure for the welding of the welded pipeline and the pipeline to be welded. The device has the advantages of small size, simple structure, easy assembly and disassembly, and convenient operation.

[0027] 2. The auxiliary device for oil pipeline welding and its use method are as follows: after the welded pipe and the welding parts of the pipe to be welded are adjusted and aligned, the clamping plate is clamped into the inside of the clamping hole, and the inner side of the clamping plate contacts the outer wall of the welded pipe and the pipe to be welded. By clamping multiple clamping plates between the welded pipe and the pipe to be welded, the welding parts of the welded pipe and the pipe to be welded can be limited, thereby reducing the shaking generated during the welding process, improving the welding stability, and ensuring the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural schematic diagram of an auxiliary device for oil pipeline welding according to the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of an auxiliary device for oil pipeline welding according to the present invention from a top view;

[0030] Figure 3 It is a structural schematic diagram of the gantry device of the present invention;

[0031] Figure 4 is a schematic structural diagram of the second clamp of the present invention;

[0032] Figure 5 is a schematic structural diagram of a third clamp of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the clamping plate of the present invention.

[0034] In the figure: 1 welded pipe, 2 fixed beam, 3 sliding plate, 4 inclined bracket, 5 sliding rod, 6 push rod, 7 pipe to be welded, 8 gantry, 9 first clamp, 10 second clamp, 11 clamping plate, 12 drawing wire, 13 third clamp, 14 clamping hole, 15 fastening bolt, 16 lifting fixture, 17 steel cable, 18 sliding groove, 19 slider, 20 sliding block, 21 connecting rod. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figures 1-6 The present invention provides a new technical solution: an auxiliary device for oil pipeline welding, comprising five parts: a fixed beam 2, a clamp structure, a cable-stayed structure, a sliding device and a gantry device; the fixed beam 2 is fixedly installed above the welded pipe 1 through the clamp structure, the lower bottom surface of the fixed beam 2 is arc-shaped, matching the surface of the welded pipe 1, a sliding rod 5 is fixedly installed on the right end of the fixed beam 2, the surface of the sliding rod 5 is slidably connected to the sliding device, a pipe 7 to be welded is hoisted below the sliding device through a clamp device, the right end of the pipe 7 to be welded is hoisted through the gantry device, and the sliding device and the top of the fixed beam 2 are connected by a cable-stayed structure.

[0037] In this embodiment, the clamp structure includes a first clamp 9, a second clamp 10 and a third clamp 13. The first clamp 9 and the second clamp 10 are hinged below the fixed beam 2. The first clamp 9 and the second clamp 10 are each composed of two arc-shaped clamp arms. The two arc-shaped clamp arms on the first clamp 9 and the second clamp 10 are fixed together by fastening bolts 15.

[0038] During the specific use of the clamp structure, first open the fastening bolts 15 on the first clamp 9 and the second clamp 10 respectively to separate the two clamp arms, and then install the clamp arms on the surface of the welded pipe 1. During installation, install the second clamp 10 at the welding point at the right end of the welded pipe 1. Finally, tighten the first clamp 9 and the second clamp 10 respectively with the two fastening bolts 15, so that the fixed beam 2 can be fixed above the welded pipe 1.

[0039] In this embodiment, a plurality of clamping holes 14 are provided on the right side of the second clamp 10, and a clamping plate 11 is clamped inside the clamping hole 14. The clamping plate 11 is stepped in shape and has an arc-shaped inner side, and the inner side of the clamping plate 11 contacts the outer side of the welded pipe 1; in the specific implementation process, after the welding parts of the welded pipe 1 and the pipe to be welded 7 are adjusted to be aligned, the clamping plate 11 is clamped into the inside of the clamping hole 14, and the inner side of the clamping plate 11 contacts the outer wall of the welded pipe 1 and the pipe to be welded 7. By clamping multiple clamping plates 11 between the welded pipe 1 and the pipe to be welded 7, the welding parts of the welded pipe 1 and the pipe to be welded 7 can be limited, thereby reducing the shaking generated during the welding process, improving the stability of the welding, and ensuring the welding effect.

[0040] In this embodiment, the shape of the third clamp 13 is arc-shaped and matches the outer wall of the pipe to be welded 7. There are two third clamps 13. The two third clamps 13 are fixedly installed on the sliding device. The bottoms of the two third clamps 13 are connected together by a wire drawing 12. The wire drawing 12 is sleeved on the pipe to be welded 7 through the bottom of the pipe to be welded 7 and is fastened by bolts, so that the pipe to be welded 7 can be lifted.

[0041] In this embodiment, the sliding device includes a sliding block 20, which is slidably connected to the surface of the sliding rod 5. The front and rear sides of the sliding block 20 are hinged with connecting rods 21, and the end of the connecting rod 21 is hinged with a push rod 6. The left end of the push rod 6 is hinged on the fixed beam 2.

[0042] During the specific use of the sliding device, the two push rods 6 are first pushed from the outside, thereby increasing the angle between the two push rods 6, and also increasing the angle between the two connecting rods 21. As the angle between the two connecting rods 21 increases, the straight-line distance between the two connecting rods 21 increases, thereby driving the sliding block 20 to slide to the right on the sliding rod 5. Similarly, pushing the two push rods 6 inward can drive the sliding block 20 to move to the left.

[0043] In this embodiment, the diagonal structure includes a sliding plate 3, which is fixedly installed above the fixed beam 2. A sliding groove 18 is provided inside the sliding plate 3, and a slider 19 is slidably connected inside the sliding groove 18. The left end of the diagonal frame 4 is fixedly installed above the slider 19. The diagonal frame 4 is triangular in shape, and the right end of the diagonal frame 4 is fixedly installed on the sliding block 20.

[0044] During the actual use of the inclined structure, the sliding block 20 and the fixed beam 2 are connected by the inclined bracket 4, so that the tension on the sliding block 20 can be distributed to the fixed beam 2, thereby avoiding deformation of the sliding rod 5 and the push rod 6 under the action of the gravity of the pipe 7 to be welded, which affects their service life and improves the stability of the device; at the same time, during the sliding process of the sliding block 20, the inclined bracket 4 pushes the slider 19 to slide inside the sliding groove 18.

[0045] In this embodiment, the gantry device includes a gantry 8, which is located at the right end of the pipe to be welded 7. A hoist 16 is fixedly installed below the gantry 8. A steel cable 17 slides inside the hoist 16. The steel cable 17 passes through the bottom of the pipe to be welded 7 to lift the pipe to be welded 7.

[0046] During the specific use of the gantry device, the steel cable 17 is first passed through the bottom of the right end of the pipe to be welded 7, and then the right end of the pipe to be welded 7 can be lifted by the sling 16 so that it is at the same horizontal position as the central axis of the welded pipe 1.

[0047] This embodiment, by providing a fixed crossbeam 2, a clamp structure, a diagonal structure, a sliding device, and a gantry device, can adjust the longitudinal and axial orientations of the pipe to be welded 7 so that it corresponds to the welded portion of the welded pipe 1, thereby providing a stable support structure for the welding of the welded pipe 1 and the pipe to be welded 7. The device has the advantages of being small in size, simple in structure, easy to assemble and disassemble, and convenient to operate.

[0048] This embodiment also includes a method for using an auxiliary device for oil pipeline welding:

[0049] S1: Install the fixed beam 2. First, open the fastening bolts 15 on the first clamp 9 and the second clamp 10 respectively to separate the two clamp arms, and then install the clamp arms on the surface of the welded pipe 1. During installation, install the second clamp 10 at the welding point on the right end of the welded pipe 1. Finally, tighten the first clamp 9 and the second clamp 10 respectively with the two fastening bolts 15, so that the fixed beam 2 can be fixed above the welded pipe 1.

[0050] S2: Install the sliding block 20. Slide the sliding block 20 from the right side of the sliding rod 5 and install it on the surface of the sliding rod 5. Then slide the sliding block 20 to the position between the sliding rods 5. Then, hinge the push rod 6 and the connecting rod 21 to the fixed beam 2 and the sliding block 20 respectively.

[0051] S3: Install the inclined bracket 4, slide the slider 19 at the left end of the inclined bracket 4 into the sliding groove 18, and then fix the right end of the inclined bracket 4 above the sliding block 20 with bolts.

[0052] S4: Lift the pipe to be welded 7, sleeve the wire drawing 12 onto the pipe to be welded 7 through the bottom of the pipe to be welded 7, and fasten it with bolts. The left end of the pipe to be welded 7 can be lifted, and then the steel cable 17 is passed through the bottom of the right end of the pipe to be welded 7. Then, the right end of the pipe to be welded 7 can be lifted by the sling 16.

[0053] S5: longitudinally adjust the position of the pipe to be welded 7 by adjusting the bolts on the wire drawing 12 and the hanger 16 on the steel cable 17 so that the central axis of the pipe to be welded 7 and the central axis of the welded pipe 1 are in the same horizontal position.

[0054] S6: Axially adjust the position of the pipe 7 to be welded. First, push the two push rods 6 inward to reduce the angle between the two push rods 6, and the angle between the two connecting rods 21 is also reduced. The straight-line distance between the two connecting rods 21 is reduced, and the sliding block 20 is driven to slide to the left on the sliding rod 5. Similarly, push the two push rods 6 outward to make the sliding block 20 slide to the right on the sliding rod 5. The sliding block 20 slides on the sliding rod 5, and then the pipe 7 to be welded can be driven to move in the same way, thereby adjusting the axial distance between the welded pipe 1 and the pipe 7 to be welded.

[0055] S7: Welding: After the welded pipe 1 and the pipe to be welded 7 are welded and the axial and longitudinal distances between the welded pipe 1 and the pipe to be welded 7 are adjusted, the clamping plate 11 is clamped into the inside of the clamping hole 14. The inner side of the clamping plate 11 contacts the outer wall of the welded pipe 1 and the pipe to be welded 7. By clamping multiple clamping plates 11 between the welded pipe 1 and the pipe to be welded 7, the welding position of the welded pipe 1 and the pipe to be welded 7 can be limited to reduce the shaking generated during the welding process, and finally welding is performed.

[0056] S8: Disassembling the device. After welding is completed, disassemble the inclined structure, sliding device, clamp structure, fixed beam 2 and gantry device in sequence.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for oil pipeline welding, comprising a fixed beam, a clamp structure, a diagonal structure, a sliding device and a gantry device, characterized in that: The fixed crossbeam is fixedly installed above the welded pipe by a clamp structure, the lower bottom surface of the fixed crossbeam is arranged in an arc shape, matching the surface of the welded pipe, the right end of the fixed crossbeam is fixedly installed with a sliding rod, the surface of the sliding rod is slidably connected to a sliding device, the sliding device includes a sliding block, and the sliding block is slidably connected to the surface of the sliding rod. The pipe to be welded is hoisted below the sliding device by a clamp device, and the right end of the pipe to be welded is hoisted by a gantry device. The sliding device and the upper part of the fixed crossbeam are connected by a canted structure; The clamp structure includes a first clamp, a second clamp, and a third clamp. The first clamp and the second clamp are hinged below the fixed crossbeam. The first clamp and the second clamp are each composed of two arc-shaped clamp arms. The two arc-shaped clamp arms on the first clamp and the second clamp are fixed together by fastening bolts. The right side of the second clamp is provided with a plurality of clamping holes, the inside of which is clamped with a clamping plate. The clamping plate is in a stepped shape and has an arc-shaped inner side. The inner side of the clamping plate contacts the outer side of the welded pipe. The inclined-stayed structure includes a sliding plate and an inclined-stayed frame. The sliding plate is fixedly installed above the fixed crossbeam. A sliding groove is provided inside the sliding plate. A slider is slidably connected inside the sliding groove. The left end of the inclined-stayed frame is fixedly installed above the slider. The inclined-stayed frame is triangular in shape. The right end of the inclined-stayed frame is fixedly installed on the sliding block.

2. The auxiliary device for oil pipeline welding according to claim 1, characterized in that: The shape of the third clamp is arc-shaped and matches the outer wall of the pipe to be welded. There are two third clamps, and the two third clamps are fixedly installed on the sliding device. The bottoms of the two third clamps are connected together by wire drawing, and the wire drawing is sleeved on the bottom of the pipe to be welded.

3. The auxiliary device for oil pipeline welding according to claim 1, characterized in that: Connecting rods are hinged on the front and rear sides of the sliding block, a push rod is hinged on the end of the connecting rod, and the left end of the push rod is hinged on the fixed crossbeam.

4. The auxiliary device for oil pipeline welding according to claim 1, characterized in that: The gantry device includes a gantry frame, which is located at the right end of the pipe to be welded. A hoist is fixedly installed below the gantry frame. A steel cable slides inside the hoist. The steel cable passes through the bottom of the pipe to be welded to lift the pipe to be welded.

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