Rapid assembly auxiliary device for offshore oil platform jacket stand pipe flange

Abstract

The invention provides an offshore oil platform jacket stand pipe flange rapid assembly auxiliary device, and relates to the technical field of jacket stand pipe auxiliary equipment of an offshore oil platform, the offshore oil platform jacket stand pipe flange rapid assembly auxiliary device comprises a bearing seat, a threaded rod is rotatably connected in the bearing seat, the tail end of the threaded rod movably penetrates through a sliding seat, and a first swing arm is rotatably arranged on the periphery of the bearing seat; the first swing arm is rotationally connected with the guide rod through a linkage assembly, and the linkage assembly is fixedly connected with a second swing arm; the end, away from the guide rod, of the second swing arm is rotationally connected with the sliding base, and a threaded sleeve is fixedly connected to the front end of the sliding base and is in threaded connection with the threaded rod. The first swing arm and the second swing arm act on the guide rod outwards, so that the guide rod is diffused outwards until the guide rod is pressed in the target guide pipe, the target flange is hoisted and arranged outside the guide rod in a sleeving mode, then the target flange is aligned to the vertical pipe along the guide rod, then the flange and the pipeline are assembled and welded, and the assembling difficulty between the flange and the vertical pipe is reduced.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment for jacket risers on offshore oil platforms, and particularly to an auxiliary device for quick assembly of flanges for jacket risers on offshore oil platforms. Background Technology

[0002] An oil platform, also known as a drilling platform, is a large offshore structure used for drilling to extract oil and natural gas, and for temporary storage until the oil is transported to an onshore refinery for cracking and processing. In many cases, the platform includes extraction facilities as well as living quarters for personnel. Before installing the jacket riser on an offshore oil platform, the riser needs to be prefabricated and flanges welded.

[0003] Because there is a lack of corrective and restraining force when assembling flanges and risers, a crane is required for assembly and installation. The flanges sway with the hoisting ropes, which makes assembling riser flanges quite difficult.

[0004] To address these issues, we propose a rapid assembly auxiliary device for riser flanges on offshore oil platform jackets. Summary of the Invention

[0005] The main technical problem to be solved by the present invention is to solve the problem of the difficulty in assembling riser flanges. In order to overcome the above-mentioned defects of the prior art, an auxiliary device for rapid assembly of riser flanges of offshore oil platform jacket racks is provided.

[0006] The technical solution adopted by this invention to solve its technical problem is: An auxiliary device for quick assembly of riser flanges on a offshore oil platform includes a bearing housing. A threaded rod is rotatably connected inside the bearing housing. The front end of the threaded rod passes through the bearing housing and extends outwards. The end of the threaded rod movably passes through a slide. A first swing arm is rotatably mounted on the outer periphery of the bearing housing. The first swing arm is rotatably connected to a guide rod via a linkage assembly. The linkage assembly is rotatably mounted on the guide rod. One end of the linkage assembly is fixedly connected to the first swing arm, and the other end is fixedly connected to a second swing arm. The linkage assembly enables the first and second swing arms to swing synchronously, driving the guide rod to expand outwards. The end of the second swing arm away from the guide rod is rotatably connected to the slide. A threaded sleeve is fixedly connected to the front end of the slide, and the threaded sleeve is screwed onto the threaded rod.

[0007] Furthermore, the number of first swing arms is multiple, evenly distributed on the outer periphery of the bearing housing.

[0008] Furthermore, the linkage assembly includes a first gear and a second gear that mesh with each other. Both the first gear and the second gear are rotatably mounted inside the guide rod. The first gear is fixedly connected to the end of the first swing arm away from the bearing seat, and the second gear is fixedly connected to the second swing arm.

[0009] Furthermore, a hexagonal block is fixedly connected to the front end of the threaded rod after passing through the bearing seat. A magnetic sleeve is magnetically snapped onto the front part of the hexagonal block, and a crank is fixedly connected to the front end of the magnetic sleeve. A guide sleeve is provided on the hexagonal block, which is fitted and matched with the magnetic sleeve. The rear end of the guide sleeve is fixedly connected to the bearing seat, and the hexagonal block is located at the center of the guide sleeve.

[0010] Furthermore, the threaded sleeve is composed of two halves and has elasticity. The front part of the threaded sleeve is movably fitted with a restraining sleeve, the front part of the restraining sleeve is slidably fitted with the threaded rod, and the rear part of the restraining sleeve is movably fitted with the threaded sleeve. A guide rod is fixedly connected to the outside of the restraining sleeve, and a pinch button is slidably fitted to the outside of the guide rod. The guide rod slides through the pinch button, and a conical spring is movably fitted to the outside of the guide rod. One end of the conical spring is fixedly connected to the pinch button, and the other end of the conical spring is fixedly connected to a button. The button and the guide rod are fixedly connected.

[0011] Furthermore, the pinch button includes a force guide plate, a button body, and a guide sleeve. The button body is fixedly connected to the front of the force guide plate, the rear end of the guide sleeve is fixedly connected to the button body, the rear end of the force guide plate is fixedly connected to the slide, and one end of the conical spring is fixedly connected to the button body.

[0012] Furthermore, the guide rod includes a rod body and a connecting block, one end of the rod body is fixedly connected to the connecting block; the connecting block is fixedly connected to the restraint sleeve, the rod body moves through the button body and the guide sleeve, and the rear end of the rod body is fixedly connected to the button.

[0013] Furthermore, the restraint sleeve includes a sleeve body and a slip ring. The rear end of the slip ring is fixedly connected to the sleeve body, the slip ring is movably sleeved on the threaded rod, and the sleeve body is fixedly connected to the connecting block.

[0014] Furthermore, the threaded sleeve includes a first spring piece, a second spring piece, a first threaded block, and a second threaded block. The second threaded block is fixedly connected to the front end of the first spring piece, and the first threaded block is fixedly connected to the front end of the second spring piece. The first threaded block and the second threaded block are clamped on the threaded rod, and the threaded rod is threadedly engaged with the first threaded block and the second threaded block, respectively. The rear ends of the first spring piece and the second spring piece are fixedly connected to the slide block, and the sleeve body is movably sleeved outside the first threaded block and the second threaded block.

[0015] Furthermore, a guide head is fixedly connected to the outer end of the guide rod; a first rotating sleeve and a second rotating sleeve are rotatably sleeved on the crank handle.

[0016] The beneficial effects of this invention are: 1. Place the device inside the target riser, with the front of the guide rod exposed. Place the magnetic sleeve on the hexagonal block, then operate the crank to rotate the hexagonal block. The hexagonal block drives the threaded rod to rotate. Utilizing the device's own weight inside the riser, friction prevents the guide rod from sliding and revolving within the riser. The hexagonal block drives the threaded rod to rotate, which pulls the threaded sleeve. The threaded sleeve acts on the slide block, causing the slide block to press against the second swing arm, making the second swing arm swing outward. The second and first gears transmit the motion to the first swing arm, causing it to swing outward synchronously. The first and second swing arms act outward on the guide rod, causing it to spread outward until it is pressed tightly inside the target riser. Remove the crank and magnetic sleeve, hoist the target flange onto the outside of the guide rod, align the target flange with the riser along the guide rod, and then assemble and weld the flange to the pipe, reducing the assembly difficulty between the flange and the riser.

[0017] 2. After placing the device inside the riser, squeeze the pinch button and the button to activate the guide rod, which in turn activates the restraint sleeve, causing the restraint sleeve to disengage from the threaded sleeve. Pull the pinch button to activate the slide block, which in turn activates the threaded sleeve, causing the threaded sleeve to slip along the threaded rod. This allows the slide block to directly approach the bearing seat, ensuring the guide rod is fully in contact with the inner wall of the riser. Then release the pinch button and the button, and rotate the threaded rod. Once the thread of the threaded rod matches the internal thread of the threaded sleeve, the threaded sleeve closes itself using its own spring. The spring force of the conical spring acts on the button, which in turn acts on the guide rod, causing the guide rod to re-attach the restraint sleeve to the threaded sleeve. The threaded rod then drives the threaded sleeve to further act on the slide block, which in turn acts on the second swing arm, firmly pressing the guide rod against the inner wall of the riser and improving operational efficiency.

[0018] 3. When connecting the hexagonal block and the magnetic sleeve, use the guide sleeve to guide the magnetic sleeve to align with the central axis of the hexagonal block. Then, crank the handle to rotate the magnetic sleeve so that the magnetic sleeve and the hexagonal block are accurately connected, which facilitates the connection between the hexagonal block and the magnetic sleeve. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the pinch button structure of the present invention; Figure 3 This is a schematic diagram of the guide rod structure of the present invention; Figure 4 This is a schematic diagram of the restraint sleeve structure of the present invention; Figure 5 This is a schematic diagram of the threaded sleeve structure of the present invention.

[0021] Explanation of the labels in the diagram: 1. Bearing housing; 2. Pinch button; 3. Guide rod; 4. Restraint sleeve; 5. Threaded sleeve; 6. First swing arm; 7. First gear; 8. Guide rod; 9. Second gear; 10. Second swing arm; 11. Slide seat; 12. Threaded rod; 13. Hexagonal block; 14. Guide sleeve; 15. Crank handle; 16. Magnetic sleeve seat; 17. First rotating sleeve; 18. Second rotating sleeve; 19. Conical spring; 20. Guide head; 21. Guide plate; 22. Button body; 23. Guide sleeve; 31. Rod body; 32. Connecting block; 41. Sleeve body; 42. Slip ring; 51. First spring piece; 52. Second spring piece; 53. First threaded block; 54. Second threaded block; 201. Button. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions herein are used to explain the present invention, but are not intended to limit the present invention.

[0023] Reference Figure 1 and 5 A quick assembly auxiliary device for riser flanges of offshore oil platform jacket supports includes a bearing housing 1. A threaded rod 12 is rotatably connected inside the bearing housing 1. The front end of the threaded rod 12 passes through the bearing housing 1 and is fixedly connected to a hexagonal block 13. The end of the threaded rod 12 movably passes through a slide block 11. Multiple first swing arms 6 are evenly distributed on the outer periphery of the bearing housing 1. The first swing arms 6 are rotatably mounted on the outer periphery of the bearing housing 1 and are rotatably connected to a guide rod 8 via a linkage assembly. This linkage assembly is rotatably mounted on the guide rod 8. One end of the linkage assembly is fixedly connected to the first swing arm 6, and the other end is fixedly connected to a second swing arm 10. The linkage assembly enables the first swing arms 6 and the second swing arm 10 to move synchronously. The linkage assembly includes a meshing first gear 7 and a second gear 9. Both the first gear 7 and the second gear 9 are rotatably mounted inside the guide rod 8. The first gear 7 is fixedly connected to the end of the first swing arm 6 away from the bearing housing 1, and the second gear 9 is fixedly connected to the second swing arm 10. The end of the second swing arm 10 away from the guide rod 8 is rotatably connected to the slide block 11. A threaded sleeve 5 is fixedly connected to the front end of the slide block 11. The threaded sleeve 5 is screwed onto the threaded rod 12. A magnetic sleeve 16 is snapped onto the front of the hexagonal block 13. A crank 15 is fixedly connected to the front end of the magnetic sleeve 16. The magnetic sleeve 16 and the hexagonal block 13 are magnetically matched.

[0024] Reference Figure 1 and 5The threaded sleeve 5 is divided into two halves and has elasticity. The front part of the threaded sleeve 5 is movably fitted with a restraining sleeve 4, and the front part of the restraining sleeve 4 is slidably fitted onto the threaded rod 12. The rear part of the restraining sleeve 4 is movably fitted onto the threaded sleeve 5. A guide rod 3 is fixedly connected to the outside of the restraining sleeve 4. A pinch button 2 is slidably fitted onto the outside of the guide rod 3. The guide rod 3 slides through the pinch button 2. A conical spring 19 is movably fitted onto the outside of the guide rod 3. One end of the conical spring 19 is fixedly connected to the pinch button 2, and the other end of the conical spring 19 is fixedly connected to a button 201. The button 201 is fixedly connected to the guide rod 3. After placing the device inside the pipe, squeeze the pinch button 2 and button 201, causing button 201 to act on the guide rod 3, which in turn acts on the restraining sleeve 4, disengaging the restraining sleeve 4 from the threaded sleeve 5. Then, pull the pinch button 2, causing it to act on the slide block 11, which in turn acts on the threaded sleeve 5, causing the threaded sleeve 5 to slip along the threaded rod 12. This allows the slide block 11 to directly approach the bearing seat 1, ensuring that the guide rod 8 is fully in direct contact with the inner wall of the riser. Then, release the pinch button 2 and button 201. When the threaded rod 12 is rotated, and the thread of the threaded rod 12 matches the internal thread of the threaded sleeve 5, the threaded sleeve 5 closes in place with the help of its own spring. The elastic force of the conical spring 19 acts on the button 201, which in turn acts on the guide rod 3, causing the guide rod 3 to drive the binding sleeve 4 to be re-fitted onto the threaded sleeve 5. The threaded rod 12 then drives the threaded sleeve 5 to further act on the slide 11, which in turn acts on the second swing arm 10, so that the guide rod 8 is firmly pressed against the inner wall of the riser, improving operating efficiency.

[0025] Reference Figure 1 A guide head 20 is fixedly connected to the outer end of the guide rod 8. The guide head 20 is used to guide the target flange sleeved on the outside of the guide rod 8.

[0026] Reference Figure 1 A guide sleeve 14 is provided on the hexagonal block 13. The guide sleeve 14 is fitted and matched with the magnetic sleeve 16. The rear end of the guide sleeve 14 is fixedly connected to the bearing seat 1. The hexagonal block 13 is located at the center of the guide sleeve 14. When aligning the hexagonal block 13 and the magnetic sleeve 16, the guide sleeve 14 is used to guide the magnetic sleeve 16 to align with the central axis of the hexagonal block 13. Then, the crank handle 15 is turned to drive the magnetic sleeve 16 to rotate, so that the magnetic sleeve 16 and the hexagonal block 13 are accurately aligned.

[0027] Reference Figure 1 The crank handle 15 is rotatably fitted with a first rotating sleeve 17 and a second rotating sleeve 18. By holding the first rotating sleeve 17 and the second rotating sleeve 18 to operate the crank handle 15, the dynamic friction between the crank handle 15 and the palm is reduced, and the comfort of operating the crank handle is improved.

[0028] Reference Figure 1 and 2The pinch button 2 includes a force guide plate 21, a button body 22, and a guide sleeve 23. The button body 22 is fixedly connected to the front of the force guide plate 21, the rear end of the guide sleeve 23 is fixedly connected to the button body 22, the rear end of the force guide plate 21 is fixedly connected to the slide block 11, and one end of the conical spring 19 is fixedly connected to the button body 22. When the button body 22 is pinched and pulled, the force guide plate 21 is acted upon through the button body 22, and the slide block 11 is acted upon through the force guide plate 21, which in turn acts upon the slide block 11. This structure facilitates the pulling force generated by pinching.

[0029] Reference Figure 1 , 2 3 and 5, the guide rod 3 includes a rod body 31 and a connecting block 32. One end of the rod body 31 is fixedly connected to the connecting block 32. The connecting block 32 is fixedly connected to the restraining sleeve 4. The rod body 31 movably passes through the button body 22 and the guide sleeve 23. The rear end of the rod body 31 is fixedly connected to the button 201. When the rear end of the button 201 is subjected to pressure, it acts on the rod body 31, causing the rod body 31 to act on the connecting block 32, causing the connecting block 32 to drive the restraining sleeve 4 to disengage from the threaded sleeve 5. This structure facilitates manual operation to disengage the restraining sleeve 4 from the threaded sleeve 5.

[0030] Reference Figure 1 , 3 4 and 5, the restraining sleeve 4 includes a sleeve body 41 and a slip ring 42, the rear end of which is fixedly connected to the sleeve body 41. The slip ring 42 is movably fitted onto the threaded rod 12, and the sleeve body 41 is fixedly connected to the connecting block 32. When the connecting block 32 moves the sleeve body 41 forward, it disengages the sleeve body 41 from the threaded sleeve 5, allowing the threaded sleeve 5 to slide away from the threaded rod 12. Conversely, it re-fits the sleeve body 41 onto the threaded sleeve 5, locking the threaded sleeve 5 to the threaded rod 12. This structure facilitates the control of locking or unlocking the threaded sleeve 5.

[0031] Reference Figure 1 , 4 The threaded sleeve 5 includes a first spring piece 51, a second spring piece 52, a first threaded block 53, and a second threaded block 54. The second threaded block 54 is fixedly connected to the front end of the first spring piece 51, and the first threaded block 53 is fixedly connected to the front end of the second spring piece 52. The first threaded block 53 and the second threaded block 54 are clamped on the threaded rod 12, and the threaded rod 12 is threadedly engaged with the first threaded block 53 and the second threaded block 54 respectively. The rear ends of the first spring piece 51 and the second spring piece 52 are fixedly connected to the slide block 11. The sleeve body 41 is movably fitted outside the first threaded block 53 and the second threaded block 54. When the restraining sleeve 4 is fitted outside the first threaded block 53 and the second threaded block 54, it prevents the first threaded block 53 and the second threaded block 54 from opening outward, so that the first threaded block 53 and the second threaded block 54 maintain a threaded connection with the threaded rod 12. Conversely, it allows the first threaded block 53 and the second threaded block 54 to slide directly along the threaded rod 12. This structure facilitates switching the working state of the threaded sleeve.

[0032] Working principle: Place the device inside the target riser with the front part of the guide rod 8 exposed. Place the magnetic sleeve 16 onto the hexagonal block 13. Then operate the crank 15 to rotate the hexagonal block 13, which in turn rotates the threaded rod 12. The device's own weight acts within the riser, and friction prevents the guide rod 8 from sliding and revolving within the riser. This causes the hexagonal block 13 to rotate the threaded rod 12, which in turn pulls the threaded sleeve 5. The threaded sleeve 5 then acts on the slide block 11, causing the slide block 11 to press against the second swing arm 10, causing the second swing arm 10 to swing outwards. This movement is achieved through the second gear 9 and... The first gear 7 transmits power to the first swing arm 6, causing the first swing arm 6 to swing outward synchronously. The first swing arm 6 and the second swing arm 10 then act outward on the guide rod 8, causing the guide rod 8 to spread outward until it is pressed tightly inside the target riser. The crank handle 15 and the magnetic sleeve 16 are then removed. The target flange is hoisted and fitted over the guide rod 8. The target flange is then aligned with the riser along the guide rod 8, and the flange is then welded to the pipe. After welding, the crank handle 15 is operated to connect the magnetic sleeve 16 with the hexagonal block 13. The device is then loosened from the target riser by reversing the crank. Finally, the device is removed from the riser flange.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An auxiliary device for rapid assembly of riser flanges on offshore oil platform jackets, characterized in that, The bearing housing (1) is rotatably connected to a threaded rod (12). The front end of the threaded rod (12) passes through the bearing housing (1) and extends outward. The end of the threaded rod (12) movably passes through a slide (11). A first swing arm (6) is rotatably provided on the outer periphery of the bearing housing (1). The first swing arm (6) is rotatably connected to a guide rod (8) through a linkage assembly. The linkage assembly is rotatably provided on the guide rod (8). One end of the linkage assembly is fixedly connected to the first swing arm (6), and the other end is fixedly connected to a second swing arm (10). The linkage assembly enables the first swing arm (6) and the second swing arm (10) to swing synchronously, so that the first swing arm (6) and the second swing arm (10) drive the guide rod (8) to expand outward. The end of the second swing arm (10) away from the guide rod (8) is rotatably connected to the slide (11). A threaded sleeve (5) is fixedly connected to the front end of the slide (11). The threaded sleeve (5) is screwed onto the threaded rod (12).

2. The auxiliary device for quick assembly of riser flanges for offshore oil platform jacket racks according to claim 1, characterized in that, The number of first swing arms (6) is multiple, evenly distributed on the outer periphery of the bearing housing (1).

3. The auxiliary device for quick assembly of riser flanges for offshore oil platform jacket racks according to claim 1, characterized in that, The linkage assembly includes a first gear (7) and a second gear (9) that mesh with each other. Both the first gear (7) and the second gear (9) are rotatably mounted in the guide rod (8). The first gear (7) is fixedly connected to the end of the first swing arm (6) away from the bearing seat (1), and the second gear (9) is fixedly connected to the second swing arm (10).

4. The auxiliary device for quick assembly of riser flanges for offshore oil platform jacket racks according to claim 1, characterized in that, The front end of the threaded rod (12) passes through the bearing seat (1) and is fixedly connected to a hexagonal block (13). The front part of the hexagonal block (13) is magnetically snapped with a magnetic sleeve (16). The front end of the magnetic sleeve (16) is fixedly connected to a crank handle (15). The hexagonal block (13) is provided with a guide sleeve (14). The guide sleeve (14) is fitted and matched with the magnetic sleeve (16). The rear end of the guide sleeve (14) is fixedly connected to the bearing seat (1). The hexagonal block (13) is located at the center of the guide sleeve (14).

5. The auxiliary device for quick assembly of riser flanges for offshore oil platform jacket racks according to claim 1, characterized in that, The threaded sleeve (5) is composed of two halves and has elasticity. The front part of the threaded sleeve (5) is movably sleeved with a restraining sleeve (4). The front part of the restraining sleeve (4) is slidably sleeved on the threaded rod (12), and the rear part of the restraining sleeve (4) is movably sleeved on the threaded sleeve (5). A guide rod (3) is fixedly connected to the outside of the restraining sleeve (4). A pinch button (2) is slidably sleeved on the outside of the guide rod (3). The guide rod (3) slides through the pinch button (2). A conical spring (19) is movably sleeved on the outside of the guide rod (3). One end of the conical spring (19) is fixedly connected to the pinch button (2), and the other end of the conical spring (19) is fixedly connected to a button (201). The button (201) and the guide rod (3) form a fixed connection.

6. The auxiliary device for quick assembly of riser flanges for offshore oil platform jacket racks according to claim 5, characterized in that, The pinch button (2) includes a force guide plate (21), a button body (22) and a guide sleeve (23). The button body (22) is fixedly connected to the front of the force guide plate (21), the rear end of the guide sleeve (23) is fixedly connected to the button body (22), the rear end of the force guide plate (21) is fixedly connected to the slide (11), and one end of the conical spring (19) is fixedly connected to the button body (22).

7. The auxiliary device for quick assembly of riser flanges for offshore oil platform jacket racks according to claim 6, characterized in that, The guide rod (3) includes a rod body (31) and a connecting block (32). One end of the rod body (31) is fixedly connected to the connecting block (32). The connecting block (32) is fixedly connected to the restraint sleeve (4). The rod body (31) moves through the button body (22) and the guide sleeve (23). The rear end of the rod body (31) is fixedly connected to the button (201).

8. The auxiliary device for quick assembly of riser flanges for offshore oil platform jacket racks according to claim 7, characterized in that, The restraint sleeve (4) includes a sleeve body (41) and a slip ring (42). The rear end of the slip ring (42) is fixedly connected to the sleeve body (41). The slip ring (42) is movably sleeved on the threaded rod (12). The sleeve body (41) is fixedly connected to the connecting block (32).

9. The auxiliary device for quick assembly of riser flanges for offshore oil platform jacket racks according to claim 8, characterized in that, The threaded sleeve (5) includes a first spring plate (51), a second spring plate (52), a first threaded block (53), and a second threaded block (54). The second threaded block (54) is fixedly connected to the front end of the first spring plate (51), and the first threaded block (53) is fixedly connected to the front end of the second spring plate (52). The first threaded block (53) and the second threaded block (54) are clamped on the threaded rod (12). The threaded rod (12) is threadedly engaged with the first threaded block (53) and the second threaded block (54) respectively. The rear ends of the first spring plate (51) and the second spring plate (52) are fixedly connected to the slide (11). The sleeve body (41) is movably sleeved outside the first threaded block (53) and the second threaded block (54).

10. The auxiliary device for quick assembly of riser flanges for offshore oil platform jacket racks according to claim 4, characterized in that, The outer end of the guide rod (8) is fixedly connected to the guide head (20); the first rotating sleeve (17) and the second rotating sleeve (18) are rotatably sleeved on the crank handle (15).

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