Anti-rolling heaving plate device of floating power generation platform

Abstract

The invention belongs to the technical field of ship design, and particularly relates to a stabilization heaving plate device of a floating power generation platform. Comprising a heaving plate truss structure which is arranged at a distance from a stern and / or a distance from a bow and is positioned on a left board and a right board. And the heaving plate truss structure is arranged at a distance of 1 / 4 of the ship length from the stern or the bow. The heaving plate has the beneficial effects that the heaving plate is mainly used for increasing the additional mass and damping of vertical movement of the platform, and the heaving effect on the platform body is achieved. By arranging the multiple layers of heaving plates on the two sides of the platform, the amplitude of heaving motion can be reduced, meanwhile, reverse rolling moment is generated on the platform, rolling is effectively restrained, the rolling response of the platform in waves is reduced, the seakeeping performance of the platform is improved, the situation that the amplitude of platform motion exceeds the limit value of equipment and system operation is avoided, and the operation safety of the floating power generation platform is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of ship design, and in particular relates to a heave stabilizing plate device for a floating power generation platform. Background Art

[0002] Floating power generation platforms are subject to disturbance and impact from wind and waves as they operate at sea for a long time, causing swaying, heaving, drifting and other movements. The damping coefficient of the platform in the roll direction is relatively small, making it more likely to produce violent swaying movements, thus affecting the safety of the floating platform itself and the normal operation of key power generation equipment. Therefore, platform roll reduction is a safety factor that needs to be considered in the design of floating power generation platforms.

[0003] The working life of a floating power generation platform is usually 30 to 40 years. By reducing the roll, the stress level of key power generation equipment can be reduced and the fatigue life of the equipment can be extended. At the same time, the operating capacity under extreme environmental conditions can be improved, and longer operating days and better economic benefits can be obtained. Since the floating power generation platform is moored in the operating sea area for a long time to transmit electricity to the outside, the heave plate is extended out of the bottom of the platform during operation to suppress the roll; the heave plate is recovered into the platform shell during navigation, which will not increase the navigation resistance of the platform. Summary of the invention

[0004] The purpose of the present invention is to provide a heave plate device for a floating power generation platform, which can reduce the rolling of the floating power generation platform / ship under severe wind and wave conditions.

[0005] The technical solution of the present invention is as follows: a heave plate device for anti-rolling of a floating power generation platform comprises a liftable heave plate truss structure arranged at a distance from the stern and / or at a distance from the bow and located on the port and starboard sides.

[0006] The heave plate truss structure is arranged at a distance of 1 / 4 of the ship's length from the stern.

[0007] The heave plate truss structure is arranged at a distance of 1 / 4 of the ship length from the bow.

[0008] The heave plate truss structure comprises a heave plate and a truss structure, and the heave plate and the truss structure are mutually supported by welding.

[0009] The heave plate truss structure is arranged in the well, which is a rectangular wall of the bottom hull opening. The heave plate truss structure can be extended and retracted up and down along the wall and can be completely stored in the well.

[0010] The gap between the surrounding wall and the heaving plate truss structure is 50 mm, which can provide lateral support for the heaving plate truss structure.

[0011] The top of the enclosure is at least 600 mm higher than the operating draft.

[0012] A locking device is installed above the confining well, and the locking device is used to lock the heaving plate truss structure after it is telescoped into place, so as to restrict the heaving plate truss structure from moving up and down.

[0013] A lifting mechanism is arranged above the trap and the locking device, and the lifting mechanism provides power for the vertical extension and retraction of the heave plate truss structure.

[0014] The beneficial effects of the present invention are as follows: the main function of the heave plate is to increase the additional mass and damping of the vertical motion of the platform, and has a suppressive effect on the heave of the platform body. By arranging multiple layers of heave plates on both sides of the platform, the amplitude of the heave motion can be reduced, and at the same time, a reverse roll moment is generated on the platform, which effectively suppresses the roll, reduces the roll response of the platform in the waves, improves the platform's seakeeping, avoids the platform's motion amplitude exceeding the limit value of the equipment and system operation, and ensures the safety of the floating power generation platform operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a heave stabilizing plate device for a floating power generation platform provided by the present invention;

[0016] Figure 2 A top view of the heave stabilizing plate device for a floating power generation platform provided by the present invention;

[0017] Figure 3 A cross-sectional view and an operating state view of the heave stabilizing plate device of a floating power generation platform provided by the present invention;

[0018] Figure 4 A cross-sectional view of the heave stabilizing plate device of a floating power generation platform provided by the present invention - recovery state;

[0019] Figure 5 A three-dimensional diagram of the heaving plate truss structure.

[0020] In the figure: 1 bottom outer plate, 2 hull outer plate, 3 confinement well, 4 locking device, 5 lifting mechanism, 6 working draft, 7 truss structure, 8 heave plate, 9 heave plate truss structure. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 and 2 As shown, the heave plate device for stabilizing the floating power generation platform comprises a liftable heave plate truss structure 9 which is arranged at about 1 / 4 of the ship length from the stern and / or at about 1 / 4 of the ship length from the bow and is located on the port and starboard sides.

[0023] The heave plate truss structure 9 includes a heave plate 8 and a truss structure 7, which are welded to each other and support each other.

[0024] The well 3 is a rectangular wall of the bottom hull opening. The heave plate truss structure 9 can be extended and retracted up and down along the wall, and can completely accommodate the heave plate truss structure in the well. The gap between the wall and the truss structure is about 50 mm, which can provide lateral support for the heave plate truss structure 9. The top of the well is at least about 600 mm higher than the operating draft 6.

[0025] The locking device 4 is installed above the confining well 3 and is used to lock the heaving plate truss structure after it is telescoped into place, thereby restricting the heaving plate truss structure from moving up and down.

[0026] The locking device 4 is an annular bite block structure, which can move horizontally and is nut-shaped or tooth-shaped. It can provide constraints for the truss structure 7 after it is in place and limit the up and down movement of the truss structure 7.

[0027] The lifting mechanism 5 is arranged above the well 3 and the locking device 4, and provides power for the heave plate truss structure 9 to extend and retract upward and downward. The lifting mechanism 5 is a power mechanism, and provides power for the truss structure 7 to move upward and downward.

[0028] The truss structure 7 provides support strength for the heave plate 8 .

[0029] The heave plate 8 is a key structure for increasing the additional mass and damping of vertical motion. The heave plate 8 is greatly impacted by the water flow during the heave motion, and the truss structure 7 provides support strength.

Claims

1. A heave plate device for stabilizing a floating power generation platform, characterized in that: The invention comprises a liftable heave plate truss structure which is arranged at a distance from the stern and / or at a distance from the bow and is located on the port and starboard sides.

2. The heave stabilizing plate device for a floating power generation platform according to claim 1, characterized in that: The heave plate truss structure is arranged at a distance of 1 / 4 of the ship's length from the stern.

3. The heave stabilizing plate device for a floating power generation platform according to claim 1, characterized in that: The heave plate truss structure is arranged at a distance of 1 / 4 of the ship length from the bow.

4. The heave stabilizing plate device for a floating power generation platform according to any one of claims 1 to 3, characterized in that: The heave plate truss structure comprises a heave plate and a truss structure, and the heave plate and the truss structure are mutually supported by welding.

5. The heave stabilizing plate device for a floating power generation platform according to claim 4, characterized in that: The heave plate truss structure is arranged in the well, which is a rectangular wall of the bottom hull opening. The heave plate truss structure can be extended and retracted up and down along the wall and can be completely stored in the well.

6. The heave stabilizing plate device for a floating power generation platform according to claim 5, characterized in that: The gap between the surrounding wall and the heaving plate truss structure is 50 mm, which can provide lateral support for the heaving plate truss structure.

7. The heave stabilizing plate device for a floating power generation platform according to claim 5, characterized in that: The top of the enclosure is at least 600 mm higher than the operating draft.

8. The heave stabilizing plate device for a floating power generation platform according to claim 5, characterized in that: A locking device is installed above the confinement well, and the locking device is used to lock the heaving plate truss structure after it is telescoped into place, so as to restrict the heaving plate truss structure from moving up and down.

9. The heave stabilizing plate device for a floating power generation platform according to claim 8, characterized in that: A lifting mechanism is arranged above the trap and the locking device, and the lifting mechanism provides power for the vertical extension and retraction of the heave plate truss structure.

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