Movable vertical pipe lifting and turning heavy supporting device for deep sea FPSO (Floating Production Storage and Offloading)
By designing a movable riser lifting and reversing heavy support device, the risk of riser collision with the hull was resolved, and the stability of riser angle adjustment and load transfer was achieved, ensuring the smooth progress of FPSO offshore installation operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-03-13
AI Technical Summary
In FPSO riser systems, the risk of riser collision with the hull is unavoidable, especially under multi-point mooring systems with uncertain position and multiple loads. Existing devices are difficult to effectively support and adjust the riser angle, leading to installation difficulties.
Design a movable riser lifting and reversing heavy-duty support device including a guide sliding system, a base plate reinforcement structure, a support system, an upper base and a lower base. The riser can be flexibly adjusted and stably supported by components such as the main guide wheel, sliding buckle, and track limiter, so as to ensure effective load transfer.
Effectively avoids collisions between risers and the hull, ensures smooth riser installation, meets daily operational needs, achieves stable load transfer and structural strength, and supports the smooth implementation of offshore riser lifting operations.
Smart Images
Figure CN121650815A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a mobile riser lifting and reversing heavy-duty support device for deep-sea FPSOs. Background Technology
[0002] Due to the uncertain location of oilfield wellheads, the FPSO's position is relatively fixed when using a multi-point mooring system. When the wellheads are located on the other side of the FPSO riser system, a heavy-duty support device that can change direction during riser lifting is required to prevent the riser from colliding with the hull when passing through it. Considering the riser's own weight, the maximum rated lifting load at sea can reach 400 tons, the outer diameter of the lifting cable can reach 150mm, and the self-weight of the guide wheel can reach 10 tons. To maximize the use of the main steering wheel, the main steering system is designed to be movable and can be adjusted according to the position of the lower suction inlet. Summary of the Invention
[0003] The purpose of this invention is to provide a mobile riser lifting and reversing heavy-duty support device for deep-sea FPSOs.
[0004] The technical solution adopted by the present invention to achieve the above objectives is as follows: a heavy-duty support device for lifting and reversing the direction of a mobile riser for a deep-sea FPSO, comprising a guide sliding system, a base plate reinforcement structure, a support system, an upper base and a lower base. The guide sliding system and the base plate reinforcement structure are installed on the base plate (11). The support system is connected between the base plate (11) and the upper base and the lower base. The upper base and the lower base are respectively installed on the outer plate (45) of the hull. The guide sliding system comprises a main steering wheel (1), a main steering wheel base (2), an upper sliding buckle (3), a lower sliding buckle (4), an upper sliding track (5), a lower sliding track (6), a locator (7), a left sliding track limiter (8), and a right sliding track limiter (9). The sliding track limiter (9) and the main guide wheel sliding track reinforcement (10) are installed on the outside of the main guide wheel base (2). The upper sliding buckle (3) and the lower sliding buckle (4) are respectively installed on the upper and lower ends of the bottom of the main guide wheel base (2). The upper sliding track (5), the lower sliding track (6) and the main guide wheel sliding track reinforcement (10) are respectively installed on the outside of the base plate (11). The upper sliding buckle (3) slides in the upper sliding track (5) and the lower sliding buckle (4) slides in the lower sliding track (6). The upper sliding buckle (3) and the lower sliding buckle (4) are positioned and locked in the track by the locator (7). The left sliding track limiter (8) and the right sliding track limiter (9) are respectively installed on the outside of the base plate (11). Positioners (9) are respectively installed on the upper sliding track (5) and the lower sliding track (6); the substrate reinforcement structure consists of an upper horizontal truss (12), a middle horizontal truss (13), a lower horizontal truss (14), a vertical reinforcement (15), a right vertical sealing plate (16), a left vertical sealing plate (17), and a corresponding track reinforcement (18); the support system includes two horizontal main support pipes (19), two inclined main support pipes (20), a horizontal auxiliary support pipe (21), and a vertical auxiliary support pipe (22). The two horizontal main support pipes (19) and the two inclined main support pipes (20) support the substrate (11). The two horizontal main support pipes (19) are installed on the upper sliding track (5) and the lower sliding track (6), respectively; ... and two horizontal auxiliary support pipes (21), two inclined main support pipes (22), two horizontal auxiliary support pipes (20), and two horizontal auxiliary support On the upper base, two inclined main support pipes (20) are installed on the lower base, a horizontal auxiliary support pipe (21) is set between two horizontal main support pipes (19), and a vertical auxiliary support pipe (22) is set between two horizontal main support pipes (19) and two inclined main support pipes (20); the upper base is composed of an upper base vertical reinforcement (23), an upper base horizontal reinforcement (24), a horizontal main support pipe reinforcement (25), a horizontal main support pipe reinforcement sealing plate (26), and an upper base panel (27); the lower base is composed of a lower base vertical reinforcement (28), a lower base horizontal reinforcement (29), an inclined main support pipe reinforcement (30), an inclined main support pipe reinforcement sealing plate (31), and a lower base panel (32).
[0005] The main steering wheel (1) is mounted on the outside of the main steering wheel base (2) via a structural cheek plate.
[0006] The upper sliding track (5) and the lower sliding track (6) are arc-shaped structures.
[0007] The inclined main support pipe (20) forms a 60° angle with the horizontal main support pipe (19).
[0008] Maintenance and operation platforms are provided on both sides of the main steering wheel (1). The maintenance and operation platforms are installed on the outside of the base plate extension structure (39) and are composed of support pipe (35), reinforcing plate (36) and platform support beam (37).
[0009] An end support structure (38) is provided below the maintenance and operation platform.
[0010] The substrate extension structure (39) is provided with a support tube (40) connected to the horizontal main support tube (19) on the back.
[0011] The pedestrian walkway of the maintenance and operation platform is equipped with square steel (41) and straight ladders (44).
[0012] The maintenance and operation platform is equipped with a movable railing (42) and a sliding operating lever (43).
[0013] This invention discloses a mobile riser lifting and reversing heavy-duty support device for deep-sea FPSOs. While ensuring structural strength, it meets the needs of the main lifting winch for riser installation during daily FPSO operations. The innovative design and optimized structural form effectively connects with the hull structure to form an integral whole, which facilitates the effective transfer of load to the main hull structure and prevents the riser from contacting or colliding with the hull. This ensures the smooth implementation of FPSO underwater production preparation and offshore riser installation lifting operations. Attached Figure Description
[0014] Figure 1 This is a layout diagram of a heavy-duty support device for a mobile riser lifting and reversing system for deep-sea FPSOs according to the present invention.
[0015] Figure 2 This is a schematic diagram of the guide sliding system and track model of a heavy-duty support device for a mobile riser lifting and reversing device for deep-sea FPSOs according to the present invention.
[0016] Figure 3 This is a front view of a heavy-duty support device for a mobile riser lifting and reversing system for deep-sea FPSOs according to the present invention.
[0017] Figure 4 This is a horizontal view of the main support pipe of a heavy-duty, movable riser lifting and reversing support device for deep-sea FPSOs according to the present invention.
[0018] Figure 5This is a schematic diagram of the upper horizontal truss of the base plate of a heavy-duty support device for a mobile riser lifting and reversing system for deep-sea FPSOs according to the present invention.
[0019] Figure 6 This is a schematic diagram of the right vertical sealing plate of the base plate of a heavy-duty support device for a mobile riser lifting and reversing device for deep-sea FPSOs according to the present invention.
[0020] Figure 7 This is a schematic diagram of the track reinforcement corresponding to the base plate of a heavy-duty support device for lifting and reversing the direction of a mobile riser of a deep-sea FPSO according to the present invention.
[0021] Figure 8 This is a projection diagram of the inclined support pipe of a heavy-duty support device for a mobile riser lifting and reversing system for deep-sea FPSOs according to the present invention.
[0022] Figure 9 This is a diagram showing the arrangement of the base plate reinforcement structure of a heavy-duty support device for a mobile riser lifting and reversing system for deep-sea FPSOs according to the present invention.
[0023] Figure 10 This is a plan view of the layout of the pedestrian walkway, maintenance and operation platform of a mobile riser lifting and reversing heavy support device for deep-sea FPSO according to the present invention.
[0024] Figure 11 This is a side view of the layout of the pedestrian walkway, maintenance and operation platform of a mobile riser lifting and reversing heavy support device for deep-sea FPSO according to the present invention. Detailed Implementation
[0025] like Figures 1 to 11As shown, the heavy-duty support device for the movable riser lifting and reversing mechanism of a deep-sea FPSO includes a guide sliding system, a base plate reinforcement structure, a support system, an upper base, and a lower base. The guide sliding system and the base plate reinforcement structure are mounted on the base plate 11. The support system connects the base plate 11 with the upper and lower bases. The upper and lower bases are respectively mounted on the hull hull plate 45. The guide sliding system includes a main directional wheel 1, a main directional wheel base 2, an upper sliding latch 3, a lower sliding latch 4, an upper sliding track 5, a lower sliding track 6, a positioner 7, a left sliding track limiter 8, a right sliding track limiter 9, and a main directional wheel sliding track reinforcement 10. The main directional wheel 1 is mounted on the outside of the main directional wheel base 2 via a structural cheek plate. The upper sliding latch 3 and the lower sliding latch 4 are respectively mounted on... At the upper and lower ends of the bottom of the main guide wheel base 2, the upper sliding rail 5, the lower sliding rail 6, and the main guide wheel sliding rail reinforcement 10 are respectively installed on the outer side of the base plate 11. The upper sliding buckle 3 slides in the upper sliding rail 5, and the lower sliding buckle 4 slides in the lower sliding rail 6. The upper sliding buckle 3 and the lower sliding buckle 4 are positioned and locked in the rail by the positioner 7. The left sliding rail limiter 8 and the right sliding rail limiter 9 are respectively installed on the upper sliding rail 5 and the lower sliding rail 6. When the main hoisting winch is performing riser hoisting operation, the operator stands on the operating platform and uses the guide wheel to slide the operating rod 43 to suspend the hand chain hoist to connect to the main guide wheel 1. The main guide wheel 1 can move on its respective upper sliding rail 5 and lower sliding rail 6 through the upper sliding buckle 3 and the lower sliding buckle 4. The riser is slid along track 6. After the riser position is determined, it is positioned and locked by the positioner 7 of the main guide wheel 1. The main hoisting winch then performs the riser hoisting operation. To facilitate angle adjustment during riser installation, the upper sliding track 5 and the lower sliding track 6 are designed in an arc shape. In addition, stainless steel pads are installed at the pulley connection points of the upper sliding buckle 3 and the lower sliding buckle 4 to prevent the structure from rusting and causing equipment sliding failure, which would prevent the offshore riser installation hoisting operation from being carried out smoothly. Because the main guide wheel 1 weighs 10 tons and the sea conditions are uncertain, to prevent the main guide wheel 1 from accidentally sliding or the positioner from failing, a left sliding track limiter 8 and a right sliding track limiter 9 are added to the upper sliding track 5 and the lower sliding track 6. Due to the weight of the main guide wheel 1 and the riser hoisting operation, the riser installation operation cannot be carried out smoothly. With a load capacity of up to 400 tons, to ensure sufficient strength and stability of the device, three horizontal trusses and eight vertical reinforcements are installed on the base plate 11, such as the upper horizontal truss 12, the middle horizontal truss 13, the lower horizontal truss 14, the vertical reinforcement 15, the right vertical sealing plate 16, the left vertical sealing plate 17, and the corresponding track reinforcement 18. The upper horizontal truss 12 of the base plate needs to meet the requirements of structural strength while also meeting the requirements of personnel passage width, and a certain number of drainage holes are set in the horizontal truss to prevent water accumulation. The base plate reinforcement structure consists of the upper horizontal truss 12 of the base plate, the middle horizontal truss 13 of the base plate, the lower horizontal truss 14 of the base plate, the vertical reinforcement 15 of the base plate, the right vertical sealing plate 16 of the base plate, the left vertical sealing plate 17 of the base plate, and the corresponding track reinforcement 18 of the base plate.The support system includes two horizontal main support pipes 19, two inclined main support pipes 20, a horizontal auxiliary support pipe 21, and a vertical auxiliary support pipe 22. The two horizontal main support pipes 19 and the two inclined main support pipes 20 support the base plate 11. The two horizontal main support pipes 19 are mounted on the upper base, and the two inclined main support pipes 20 are mounted on the lower base. The horizontal auxiliary support pipe 21 is located between the two horizontal main support pipes 19, and the vertical auxiliary support pipe 22 is located between the two horizontal main support pipes 19 and the two inclined main support pipes 20. To reduce the impact of wind, waves, and currents and to improve the structural corrosion resistance, the base plate 11 is made of 4... The structure is supported by pipe supports, such as two horizontal main support pipes 19 and two inclined main support pipes 20. To ensure sufficient strength of the support structure, horizontal auxiliary support pipes 21 are installed between the horizontal main support pipes 19, and vertical auxiliary support pipes 22 are installed between the horizontal main support pipes 19 and the inclined main support pipes 20. The arrangement of the horizontal main support pipes 19 is consistent with the arrangement of the guide wheel 1, and the support direction is consistent with the force direction of the guide wheel, ensuring effective transmission of horizontal loads during offshore lifting. The inclined main support pipes 20 form a 60° angle with the horizontal main support pipes 19, ensuring effective transmission of vertical loads during offshore lifting. The upper base is composed of... The upper base consists of a vertical reinforcement 23, a horizontal reinforcement 24, a horizontal main support tube reinforcement 25, a horizontal main support tube reinforcement sealing plate 26, and an upper base panel 27; the lower base consists of a vertical reinforcement 28, a horizontal reinforcement 29, an inclined main support tube reinforcement 30, an inclined main support tube reinforcement sealing plate 31, and a lower base panel 32. An upper base compartment reinforcement 33 is installed inside the upper base compartment, and a lower base compartment reinforcement 34 is installed inside the lower base compartment. To facilitate daily operation, maintenance, and upkeep of the guiding device, maintenance and operation platforms are installed on both sides of the main steering wheel 1. These maintenance and operation platforms are mounted on the base... The outer side of the plate extension structure 39 consists of a support pipe 35, a reinforcing plate 36, and a platform support beam 37. An end support structure 38 is installed below the maintenance and operation platform. To ensure platform stability, a support pipe 40 connected to the horizontal main support pipe 19 is installed behind the plate extension structure 39. Square steel 41 and a straight ladder 44 are arranged on the pedestrian walkway of the maintenance and operation platform. A movable railing 42 and a sliding operating lever 43 are installed above the maintenance and operation platform. The movable railing 42 facilitates the installation and removal of the main steering wheel. The sliding operating lever 43 allows for the suspension of a hand-operated hoist to move the main steering wheel 1.
Claims
1. A mobile riser lifting and reversing heavy-duty support device for deep-sea FPSOs, characterized in that: It includes a guide sliding system, a base plate reinforcement structure, a support system, an upper base and a lower base. The guide sliding system and the base plate reinforcement structure are installed on the base plate (11). The support system is connected between the base plate (11) and the upper base and the lower base. The upper base and the lower base are respectively installed on the outer plate (45) of the ship. The guide sliding system comprises a main guide wheel (1), a main guide wheel base (2), an upper sliding buckle (3), a lower sliding buckle (4), an upper sliding rail (5), a lower sliding rail (6), a positioner (7), a left sliding rail limiter (8), a right sliding rail limiter (9), and a main guide wheel sliding rail reinforcement (10). The main guide wheel (1) is installed on the outside of the main guide wheel base (2). The upper sliding buckle (3) and the lower sliding buckle (4) are respectively installed at the upper and lower ends of the bottom of the main guide wheel base (2). The upper sliding rail (5), the lower sliding rail (6), and the main guide wheel sliding rail reinforcement (10) are respectively installed on the outside of the base plate (11). The sliding buckle (3) slides in the upper sliding track (5), and the sliding buckle (4) slides in the lower sliding track (6). The upper sliding buckle (3) and the lower sliding buckle (4) are positioned and locked in the track by the locator (7). The left sliding track limiter (8) and the right sliding track limiter (9) are respectively installed on the upper sliding track (5) and the lower sliding track (6). The substrate reinforcement structure consists of the upper horizontal truss (12), the middle horizontal truss (13), the lower horizontal truss (14), the vertical reinforcement (15), the right vertical sealing plate (16), the left vertical sealing plate (17), and the corresponding track reinforcement (18). The support system includes two horizontal main support pipes (19), two inclined main support pipes (20), a horizontal auxiliary support pipe (21), and a vertical auxiliary support pipe (22). The two horizontal main support pipes (19) and the two inclined main support pipes (20) support the base plate (11). The two horizontal main support pipes (19) are installed on the upper base, and the two inclined main support pipes (20) are installed on the lower base. The horizontal auxiliary support pipe (21) is located between the two horizontal main support pipes (19), and the vertical auxiliary support pipe (22) is located between the two horizontal main support pipes (19). The upper base is set between two horizontal main support pipes (19) and two inclined main support pipes (20); the upper base is composed of an upper base vertical reinforcement (23), an upper base horizontal reinforcement (24), a horizontal main support pipe reinforcement (25), a horizontal main support pipe reinforcement sealing plate (26), and an upper base panel (27); the lower base is composed of a lower base vertical reinforcement (28), a lower base horizontal reinforcement (29), an inclined main support pipe reinforcement (30), an inclined main support pipe reinforcement sealing plate (31), and a lower base panel (32).
2. The heavy-duty support device for lifting and reversing the direction of a deep-sea FPSO mobile riser as described in claim 1, characterized in that: The main steering wheel (1) is mounted on the outside of the main steering wheel base (2) via a structural cheek plate.
3. The heavy-duty support device for mobile riser lifting and reversing of deep-sea FPSOs according to claim 1, characterized in that: The upper sliding track (5) and the lower sliding track (6) are arc-shaped structures.
4. The heavy-duty support device for mobile riser lifting and reversing of deep-sea FPSOs according to claim 1, characterized in that: The inclined main support pipe (20) forms a 60° angle with the horizontal main support pipe (19).
5. A heavy-duty support device for lifting and reversing the direction of a deep-sea FPSO mobile riser according to claim 1, characterized in that: Maintenance and operation platforms are provided on both sides of the main steering wheel (1). The maintenance and operation platforms are installed on the outside of the base plate extension structure (39) and are composed of support pipe (35), reinforcing plate (36) and platform support beam (37).
6. A heavy-duty support device for lifting and reversing the direction of a deep-sea FPSO mobile riser according to claim 5, characterized in that: An end support structure (38) is provided below the maintenance and operation platform.
7. A heavy-duty support device for lifting and reversing the direction of a deep-sea FPSO mobile riser according to claim 5, characterized in that: The substrate extension structure (39) is provided with a support tube (40) connected to the horizontal main support tube (19) on the back.
8. A heavy-duty support device for lifting and reversing the direction of a deep-sea FPSO mobile riser as described in claim 6, characterized in that: The pedestrian walkway of the maintenance and operation platform is equipped with square steel (41) and straight ladders (44).
9. A heavy-duty support device for lifting and reversing the direction of a deep-sea FPSO mobile riser according to claim 6, characterized in that: The maintenance and operation platform is equipped with a movable railing (42) and a sliding operating lever (43).