A high degree of freedom oil production riser suspension device

Abstract

The present invention discloses a high-freedom oil production riser suspension device, which belongs to the field of marine engineering equipment technology. The outer wall of the main shell is provided with multiple lifting bins, and the lifting bins are provided with adjustment mechanisms for adjusting the risers; a lifting frame is movably installed inside the frame, and a clamping cavity is provided on the lifting frame, and a clamping cylinder located below the clamping cavity is movably installed at the bottom of the lifting frame; multiple equipment bins are provided on the inner wall of the clamping cylinder, and a cylinder is installed in the equipment bin, and a clamping plate is provided at the output end of the cylinder; an equipment cavity is provided at one end of the main shell facing the vertical direction, and a threaded ring is rotatably installed on the inner wall of the equipment cavity, and an arc plate seat that is threadedly engaged with the threaded ring is fixedly provided at the bottom of the frame. When the vertical height of multiple sets of risers needs to be adjusted synchronously, the lifting motor is started, and under the threaded cooperation of the threaded ring and the arc plate seat, the multiple adjustment mechanisms and risers can be adjusted synchronously as a whole, thereby improving the practicality of the riser suspension device.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering equipment, in particular to a high-freedom oil production riser suspension device. Background Art

[0002] The deep-sea oil production equipment delivery riser is the most important component in the entire deepwater oil and gas field development. It is one of the important components of the marine oil and gas production system that connects the floating body on the sea surface and the underwater wellhead production system. In the marine environment, the deep-sea oil production equipment delivery riser is subject to environmental loads such as wind, waves, and currents. When waves and currents flow through the riser at a certain flow rate, vortex shedding occurs, which triggers vortex-induced vibration of the riser. The riser suspension structure is a key equipment of the floating storage and offloading platform. As a key structure of the entire side riser system, it ensures the suspension of the seabed riser and ensures the safety of the riser in the wave environment.

[0003] Chinese patent application publication number CN117569756A discloses a production riser suspension system for a floating oil production platform. The suspension structure features multiple through-holes, a locking arc plate with a telescopic cavity connected to a drive cavity, and an inner and outer locking clamp movably mounted on the riser. The inner locking clamp cooperates with the inner wall of the locking arc plate to lock the riser, while the outer locking clamp cooperates with the locking arc plate to re-lock the riser. The inner wall of the rotation slot features multiple through-holes, a sliding plate is mounted on the inner wall of the suspension structure, and a clamping structure movably mounted on the sliding plate is positioned between adjacent risers. This invention allows for rapid positioning of the riser through the interaction of magnetic protrusions on the inner side of the locking arc plate with an annular groove on the inner locking clamp and the magnetic plate. Furthermore, the interaction of a locking gear and a locking tooth plate drives the first and second locking arms on either side to rotate into the locking cavity within the outer locking clamp, thereby achieving re-locking.

[0004] However, the above disclosed riser suspension system has a limited degree of freedom in actual use, and the installation process is cumbersome during hoisting. It cannot adjust the height and position of a single group or all risers according to actual needs, nor can it adjust the rotation angle of the risers. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-degree-of-freedom oil production riser suspension device in order to address the problems of existing riser suspension systems, such as limited degrees of freedom in actual use, cumbersome installation procedures during hoisting, inability to adjust the height and position of a single group or all of the risers according to actual needs, and inability to adjust the rotation angle of the risers.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a high-freedom oil production riser suspension device, comprising a main shell, a plurality of lifting bins are provided on the outer wall of the main shell, an adjustment mechanism for adjusting the riser is provided in the lifting bin; the adjustment mechanism comprises a frame, a lifting frame is movably installed inside the frame, a clamping cavity is provided on the lifting frame, a clamping cylinder located below the clamping cavity is movably installed on the bottom of the lifting frame; a plurality of equipment bins are provided on the inner wall of the clamping cylinder, a cylinder is installed in the equipment bin, and a clamping plate for fixing the riser is provided at the output end of the cylinder; an equipment cavity is provided at one end of the main shell facing in the vertical direction, a threaded ring is rotatably installed on the inner wall of the equipment cavity, and an arc plate seat threadedly engaged with the threaded ring is fixedly provided at the bottom of the frame.

[0007] As a further solution of the present invention: an adjusting motor is installed at the bottom of the frame, and a threaded rod penetrating the frame is provided at the output end of the adjusting motor. A threaded seat is also provided on the lifting frame, and the lifting frame is movably arranged in the frame through the threaded seat.

[0008] As a further solution of the present invention: sliding arms are provided on both side outer walls of the frame, a sliding cavity is provided on the inner wall of the lifting bin, and the frame is slidably arranged in the lifting bin through the sliding arms.

[0009] As a further solution of the present invention: a rotating motor is also installed at the bottom of the frame, and a driving rod passing through the frame is provided at the output end of the rotating motor, and a slot for the driving rod to pass through is also provided on the lifting frame; a linkage cylinder located below the slot is movably installed at the bottom of the lifting frame, and the linkage cylinder is connected to the clamping cylinder through a belt.

[0010] As a further solution of the present invention: a hole groove cooperating with the driving rod is opened in the middle of the linkage cylinder, multiple groups of grooves are opened on the outer wall of the driving rod, and multiple groups of protrusions are provided on the inner wall of the hole groove; the driving rod is movably connected to the linkage cylinder through the protrusions.

[0011] As a further solution of the present invention: limiting cavities are provided on both sides of the frame, bosses are provided on the outer wall of the lifting frame, and the lifting frame is movably arranged in the limiting cavities through the bosses.

[0012] As a further solution of the present invention: a gear ring is provided at the bottom of the threaded ring, a plurality of lifting motors are installed at the bottom of the main housing, and a driving gear meshing with the gear ring is installed at the output end of the lifting motor.

[0013] As a further solution of the present invention: a flange is provided on the top of the main shell; a plurality of hangers are provided on the outer wall of the main shell; and a plurality of support frames are provided on the bottom of the main shell.

[0014] As a further solution of the present invention: a plurality of anti-slip grooves are provided on the outer wall of the clamping plate.

[0015] As a further solution of the present invention: a rotating cavity is opened on the inner wall of the equipment cavity, a convex ring is provided on the outer wall of the threaded ring, and the threaded ring is movably installed in the equipment cavity through the convex ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention uses a clamping plate to quickly position risers. To adjust the height of a single riser, the adjustment motor is activated, and the threaded rod and seat cooperate to move the riser up and down along the frame. To adjust the angle of a single riser, the rotation motor is activated. Because the linkage cylinder is connected to the clamping cylinder via a belt, the drive rod synchronously rotates the riser. This design improves the positioning efficiency and degree of freedom of the riser suspension device.

[0018] 2. When the vertical heights of multiple sets of risers need to be adjusted synchronously, the lifting motor is started. With the threaded cooperation between the threaded ring and the arc plate seat, the multiple adjustment mechanisms and risers can be adjusted synchronously as a whole. This design improves the practicality of the riser suspension device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and examples:

[0020] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 It is a three-dimensional structural diagram of the main shell of the present invention;

[0022] Figure 3 It is an internal three-dimensional structural diagram of the present invention;

[0023] Figure 4 is a cross-sectional view of the adjustment mechanism of the present invention;

[0024] Figure 5 It is a three-dimensional structural diagram of the linkage cylinder in the present invention;

[0025] Figure 6 It is a cross-sectional view of the present invention.

[0026] Description of reference numerals:

[0027] 1. Main shell; 2. Flange; 3. Lifting bin; 4. Hanging seat; 5. Equipment cavity; 6. Support frame; 7. Adjustment mechanism; 8. Frame; 9. Adjustment motor; 10. Threaded rod; 11. Rotating motor; 12. Driving rod; 13. Groove; 14. Lifting frame; 15. Threaded seat; 16. Linkage cylinder; 17. Hole groove; 18. Bump; 19. Clamping cavity; 20. Clamping cylinder; 21. Belt; 22. Equipment bin; 23. Cylinder; 24. Clamping plate; 25. Anti-skid groove; 26. Sliding arm; 27. Sliding cavity; 28. Limiting cavity; 29. ​​Boss; 30. Slot; 31. Arc plate seat; 32. Threaded ring; 33. Gear ring; 34. Lifting motor; 35. Driving gear; 36. Rotating cavity; 37. Bump ring. DETAILED DESCRIPTION

[0028] The following will be combined with the Figures 1 to 6 The technical solutions of the present invention are clearly and completely described. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] The present invention provides a high degree of freedom oil production riser suspension device through improvement. Figures 1-6 As shown, it includes a main shell 1, and a plurality of lifting bins 3 are provided on the outer wall of the main shell 1, and an adjusting mechanism 7 for adjusting the vertical pipe is provided in the lifting bin 3; the adjusting mechanism 7 includes a frame 8, and a lifting frame 14 is movably installed inside the frame 8, and a clamping cavity 19 is provided on the lifting frame 14, and a clamping cylinder 20 located below the clamping cavity 19 is movably installed at the bottom of the lifting frame 14; a plurality of equipment bins 22 are provided on the inner wall of the clamping cylinder 20, and a cylinder 23 is installed in the equipment bin 22, and a clamping plate 24 for fixing the vertical pipe is provided at the output end of the cylinder 23; an equipment cavity 5 is provided at one end of the main shell 1 facing in the vertical direction, and a threaded ring 32 is rotatably installed on the inner wall of the equipment cavity 5, and an arc plate seat 31 threadedly engaged with the threaded ring 32 is fixedly provided at the bottom of the frame 8.

[0030] In this embodiment, the high-degree-of-freedom oil production riser suspension device is primarily comprised of three components: a main housing 1, an adjustment mechanism 7, and a threaded ring 32 structure. When in use, the device is first mounted on a ship or offshore platform using a lifting device and secured via a flange 2. The riser is then passed through the clamping chamber 19 using the lifting device. Once the riser reaches the desired height, the cylinder 23 is activated and the riser is secured via multiple sets of clamping plates 24. To adjust the height of a single riser, the adjustment motor 9 is activated. The lifting frame 14, in concert with the threaded rod 10 and threaded seat 15, drives the riser up and down along the frame 8. To adjust the angle of a single riser, the rotation motor 11 is activated. Since the linkage cylinder 16 is connected to the clamping cylinder 20 via a belt 21, the drive rod 12 synchronously rotates the riser. When the vertical heights of multiple sets of risers need to be adjusted synchronously, the lifting motor 34 is started, and with the cooperation of the threaded ring 32 and the arc plate seat 31, the multiple sets of adjustment mechanisms 7 and the risers are adjusted as a whole synchronously.

[0031] See attached Figure 1 -Attached Figure 2 An adjusting motor 9 is installed at the bottom of the frame 8. The output end of the adjusting motor 9 is provided with a threaded rod 10 that passes through the frame 8. A threaded seat 15 is also provided on the lifting frame 14. The lifting frame 14 is movably arranged in the frame 8 through the threaded seat 15.

[0032] In this embodiment, in order to adjust the vertical position and height of the riser, an adjusting motor 9 is designed. When the adjusting motor 9 is started, the lifting frame 14 will reciprocate up and down along the frame 8 under the cooperation of the threaded rod 10 and the threaded seat 15.

[0033] See attached Figure 2 -Attached Figure 3 Sliding arms 26 are provided on both sides of the outer wall of the frame 8, and a sliding cavity 27 is opened on the inner wall of the lifting bin 3. The frame 8 is slidably arranged in the lifting bin 3 through the sliding arms 26.

[0034] In this embodiment, when the frame 8 reciprocates in the lifting bin 3 , in order to limit its position and further improve its stability during movement, a sliding arm 26 and a sliding cavity 27 structure that cooperate with each other are designed.

[0035] See attached Figure 4 -Attached Figure 5 A rotating motor 11 is also installed at the bottom of the frame 8. The output end of the rotating motor 11 is provided with a driving rod 12 that passes through the frame 8. A slot 30 for the driving rod 12 to pass through is also provided on the lifting frame 14; a linkage cylinder 16 is movably installed at the bottom of the lifting frame 14 and is located below the slot 30. The linkage cylinder 16 is connected to the clamping cylinder 20 through a belt 21.

[0036] In this embodiment: when the rotating motor 11 is started, the driving rod 12 drives the linkage cylinder 16 to rotate. Since the linkage cylinder 16 is connected to the clamping cylinder 20 through the belt 21, and the vertical pipe is installed inside the clamping cylinder 20, the driving rod 12 will also rotate the vertical pipe synchronously, thereby adjusting the position and angle of the vertical pipe according to actual needs.

[0037] See attached Figure 4 -Attached Figure 5 A hole groove 17 cooperating with the driving rod 12 is opened in the middle of the linkage cylinder 16, multiple groups of grooves 13 are opened on the outer wall of the driving rod 12, and multiple groups of protrusions 18 are provided on the inner wall of the hole groove 17; the driving rod 12 is movably connected to the linkage cylinder 16 through the protrusions 18.

[0038] In this embodiment, a linkage cylinder 16 is designed to ensure that lifting frame 14 and drive rod 12 work in unison as lifting frame 14 reciprocates along frame 8, thereby rotating the riser and clamping cylinder 20 as needed. During operation, drive rod 12 extends through linkage cylinder 16 via slot 17. As linkage cylinder 16 reciprocates up and down relative to drive rod 12, projection 18 remains within recess 13, ensuring uninterrupted engagement between linkage cylinder 16 and drive rod 12.

[0039] See attached Figure 2 -Attached Figure 3 A limiting cavity 28 is provided on both sides of the frame 8 , and a boss 29 is provided on the outer wall of the lifting frame 14 , and the lifting frame 14 is movably arranged in the limiting cavity 28 through the boss 29 .

[0040] In this embodiment, when the lifting frame 14 reciprocates along the interior of the frame 8, in order to limit the lifting frame 14 and further improve the stability during movement, a boss 29 and a limiting cavity 28 structure that cooperate with each other are designed.

[0041] See attached Figure 3 and attached Figure 6 A gear ring 33 is provided at the bottom of the threaded ring 32 , and a plurality of lifting motors 34 are installed at the bottom of the main housing 1 . A driving gear 35 meshing with the gear ring 33 is installed at the output end of the lifting motor 34 .

[0042] In this embodiment, when the threaded ring 32 rotates, the threads engage to synchronously drive the movement of multiple adjustment mechanisms 7. To drive the rotation of the threaded ring 32, a gear ring 33 is installed at the bottom of the threaded ring 32. To drive the rotation of the gear ring 33, multiple lifting motors 34 are installed at the bottom of the main housing 1.

[0043] See attached Figure 1 -Attached Figure 2 and attached Figure 6A flange 2 is provided on the top of the main shell 1; a plurality of hangers 4 are provided on the outer wall of the main shell 1; and a plurality of support frames 6 are provided on the bottom of the main shell 1.

[0044] In this embodiment, a flange 2 is designed to facilitate installation of the device on a ship or offshore platform. During installation, multiple sets of suspension brackets 4 are provided to facilitate hoisting. To prevent interference and damage to the lifting motor 34 when the device is placed on the ground, multiple sets of support brackets 6 are provided. The bottom of the support brackets 6 is lower than the lifting motor 34, preventing it from directly contacting the ground.

[0045] See attached Figure 3 -Attached Figure 4 , a plurality of anti-slip grooves 25 are provided on the outer wall of the clamping plate 24 .

[0046] In this embodiment, when the cylinder 23 fixes the vertical pipe, in order to increase the friction force and avoid accidental sliding, a plurality of anti-slip grooves 25 are provided on the outer wall of the clamping plate 24 .

[0047] See attached Figure 2 -Attached Figure 3 A rotating cavity 36 is provided on the inner wall of the equipment cavity 5 , and a convex ring 37 is provided on the outer wall of the threaded ring 32 . The threaded ring 32 is movably installed in the equipment cavity 5 through the convex ring 37 .

[0048] In this embodiment: In order to drive multiple groups of risers and adjustment mechanisms 7 to rise or fall synchronously, a threaded ring 32 structure is designed. In order to ensure that the threaded ring 32 is rotatably arranged in the equipment cavity 5, a rotating cavity 36 and a convex ring 37 structure that cooperate with each other are designed.

[0049] The present invention operates as follows: To use the device, it is first installed on a ship or offshore platform using a lifting device and secured via flange 2. The riser is then passed through the clamping chamber 19 using the lifting device. Once the riser reaches the desired height, the cylinder 23 is activated and the riser is secured via multiple sets of clamping plates 24. To adjust the height of a single riser, the adjustment motor 9 is activated. The lifting frame 14, working in conjunction with the threaded rod 10 and threaded seat 15, drives the riser up and down along the frame 8. To adjust the angle of a single riser, the rotation motor 11 is activated. Since the linkage cylinder 16 is connected to the clamping cylinder 20 via a belt 21, the drive rod 12 synchronously rotates the riser. To adjust the vertical height of multiple risers simultaneously, the lifting motor 34 is activated. The threaded ring 32 and arc plate seat 31 work together to synchronize the adjustment mechanisms 7 and the risers.

[0050] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A high degree of freedom oil production riser suspension device, comprising a main housing (1), characterized in that: A plurality of lifting bins (3) are provided on the outer wall of the main housing (1), and an adjustment mechanism (7) for adjusting the riser is provided in the lifting bins (3); The regulating mechanism (7) comprises a frame (8), a lifting frame (14) is movably mounted inside the frame (8), a clamping cavity (19) is provided on the lifting frame (14), and a clamping cylinder (20) located below the clamping cavity (19) is movably mounted at the bottom of the lifting frame (14); A plurality of equipment compartments (22) are provided on the inner wall of the clamping cylinder (20), a cylinder (23) is installed in the equipment compartment (22), and a clamping plate (24) for fixing the standpipe is provided at the output end of the cylinder (23); An equipment cavity (5) is provided at one end of the main housing (1) facing in the vertical direction, a threaded ring (32) is rotatably mounted on the inner wall of the equipment cavity (5), and an arc plate seat (31) threadably engaged with the threaded ring (32) is fixedly provided at the bottom of the frame (8); A threaded seat (15) is also provided on the lifting frame (14), and the lifting frame (14) is movably arranged in the frame (8) through the threaded seat (15); a linkage cylinder (16) is movably installed at the bottom of the lifting frame (14), and the linkage cylinder (16) is connected to the clamping cylinder (20) through a belt (21).

2. The high-freedom oil production riser suspension device according to claim 1, characterized in that: An adjusting motor (9) is installed at the bottom of the frame (8), and a threaded rod (10) passing through the frame (8) is provided at the output end of the adjusting motor (9).

3. The high-freedom oil production riser suspension device according to claim 1, characterized in that: Sliding arms (26) are provided on both side outer walls of the frame (8), a sliding cavity (27) is provided on the inner wall of the lifting bin (3), and the frame (8) is slidably arranged in the lifting bin (3) via the sliding arms (26).

4. The high-freedom oil production riser suspension device according to claim 1, characterized in that: A rotating motor (11) is also installed at the bottom of the frame (8), and a driving rod (12) passing through the frame (8) is provided at the output end of the rotating motor (11), and a slot (30) for the driving rod (12) to pass through is also provided on the lifting frame (14); The linkage cylinder (16) is located below the slot (30).

5. The high-freedom oil production riser suspension device according to claim 4, characterized in that: A hole groove (17) cooperating with the driving rod (12) is provided in the middle of the linkage cylinder (16), a plurality of grooves (13) are provided on the outer wall of the driving rod (12), and a plurality of protrusions (18) are provided on the inner wall of the hole groove (17); the driving rod (12) is movably connected to the linkage cylinder (16) via the protrusions (18).

6. A high degree of freedom oil production riser suspension device according to any one of claims 1 to 5, characterized in that: Limiting cavities (28) are provided on both sides of the frame (8), and bosses (29) are provided on the outer wall of the lifting frame (14). The lifting frame (14) is movably arranged in the limiting cavity (28) via the bosses (29).

7. A high degree of freedom oil production riser suspension device according to any one of claims 1 to 5, characterized in that: A gear ring (33) is provided at the bottom of the threaded ring (32), a plurality of lifting motors (34) are installed at the bottom of the main housing (1), and a driving gear (35) meshing with the gear ring (33) is installed at the output end of the lifting motor (34).

8. A high degree of freedom oil production riser suspension device according to any one of claims 1 to 5, characterized in that: A flange (2) is provided on the top of the main housing (1); And / or, a plurality of suspension seats (4) are provided on the outer wall of the main shell (1); And / or, a plurality of support frames (6) are provided at the bottom of the main housing (1).

9. A high degree of freedom oil production riser suspension device according to any one of claims 1 to 5, characterized in that: Multiple groups of anti-slip grooves (25) are provided on the outer wall of the clamping plate (24).

10. A high degree of freedom oil production riser suspension device according to any one of claims 1 to 5, characterized in that: A rotating cavity (36) is provided on the inner wall of the equipment cavity (5), a convex ring (37) is provided on the outer wall of the threaded ring (32), and the threaded ring (32) is movably mounted in the equipment cavity (5) via the convex ring (37).

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