Semi-submersible foundation for typhoon-resistant combined type fan system

Abstract

The utility model belongs to the field of offshore wind power, and discloses a semi-submersible foundation for an anti-typhoon combined type fan system, which comprises a central ballast water tank and a plurality of corner ballast water tanks annularly distributed around the central ballast water tank, the central ballast water tank is connected with the corner ballast water tanks through trusses, the central ballast water tank is of a hollow structure, and the corner ballast water tanks are connected with the central ballast water tank through the trusses. A plurality of rotary sliding seats are annularly distributed on the central ballast water tank, the rotary sliding seats are in sliding fit with the central ballast water tank, and the sliding tracks of the rotary sliding seats are arc tracks with the axis of the central ballast water tank as the center. The semi-submersible foundation is provided with the ballast water tank, the internal draft can be changed every time and every second, foundation deviation caused by wind speed and wave force is compensated, the draft depth and weight of the platform are increased when stormy waves are large, and good stability is kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to offshore wind power field, concretely is a kind of anti typhoon grade composite wind turbine system with semi-submersible foundation. BACKGROUND

[0002] As a new type of offshore wind power foundation structure, floating foundation can effectively improve the stability and safety of offshore wind turbine. It reduces the impact of wind and wave on the structure by semi-submersible underwater mode, and maintains the stability of the position through anchoring system. This structure is particularly suitable for wind power projects in deep water areas and can withstand stronger wind and wave impact.

[0003] Typhoon, as a common extreme weather phenomenon, poses a great threat to offshore wind power. The strong wind and huge waves carried by typhoon can cause serious damage to the structure of wind turbine, and even lead to the collapse of the entire wind turbine. Therefore, how to design an offshore wind power foundation that can resist typhoon invasion has become a key technical challenge for the development of offshore wind power.

[0004] To solve the above problems, the applicant proposes an anti typhoon grade composite wind turbine system with semi-submersible foundation. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide an anti typhoon grade composite wind turbine system with semi-submersible foundation to solve the problems raised in the background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An anti typhoon grade composite wind turbine system with semi-submersible foundation includes a central ballast tank and several corner ballast tanks arranged around the central ballast tank. The central ballast tank and the corner ballast tank are connected by a truss. The central ballast tank is a hollow structure. Several rotating sliding seats are arranged around the central ballast tank. The rotating sliding seat and the central ballast tank are in sliding fit, and the sliding track of the rotating sliding seat is set as a circular arc track with the central ballast tank axis as the center.

[0008] Further, a circular guide rail corresponding to the circular arc track is provided on the central ballast tank, and all rotating sliding seats are in sliding fit with the circular guide rail.

[0009] Further, a rotating walking driving device is provided on the rotating sliding seat, and the rotating sliding seat moves on the central ballast tank through the rotating walking driving device.

[0010] Further, a circular rack coaxial with the circular guide rail is arranged on the central ballast water tank, and the rotating walking driving device comprises a rotating walking motor and a rotating walking gear, the rotating walking motor is arranged on the rotating sliding seat and connected with the rotating walking gear, and the rotating walking gear is engaged with the circular rack.

[0011] Further, the circular rack is arranged on the circular guide rail.

[0012] Further, a damping plate is arranged at the bottom of the angle ballast water tank.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1) The semi-submersible foundation is provided with a ballast water tank, the internal draught can be changed every hour and every second, the foundation deviation caused by wind speed and wave force is compensated, the platform draught depth and weight are increased when the wind and wave are large, and good stability is maintained.

[0015] 2) The traditional yaw system drives the yaw device to make the fan blade always face the wind direction, the traditional yaw device is installed between the tower drum and the cabin, the structure is very fragile, the tower drum lifting and rotating device is installed on the semi-submersible foundation, the tower drum top is integrated, and the stability is increased.

[0016] 3) The semi-submersible foundation mode reduces platform vibration, has the advantage of installation on the wharf, does not need to install a ship to work in complex sea conditions, greatly saves the cost, and provides a new scheme for future deep sea offshore wind power exploration. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model.

[0018] Figure 2 It is a structural schematic view of the anti-tornado grade composite fan system to which the utility model is applied.

[0019] Figure 3 It is Figure 2 It is an enlarged view of A in the middle.

[0020] Figure 4 It is a connection structure schematic view of the fan and the fan overturning driving device in the anti-tornado grade composite fan system to which the utility model is applied.

[0021] Figure 5 It is a connection structure schematic view of the rotating sliding seat, the rotating walking driving device, the circular guide rail and the circular rack in the anti-tornado grade composite fan system to which the utility model is applied.

[0022] Figure 6The utility model discloses a anti typhoon level composite fan system is applied to the lifting sliding seat, lifting walking drive arrangement, lifting guide rail, lifting rack connection structure schematic diagram in it.

[0023] In the drawing: tower drum 1, fan 2, central ballast water tank 3, angle ballast water tank 4, truss 5, tower drum ballast water tank 6, fan turnover drive device 7, fan mounting seat 700, fan turnover drive motor 701, gear box 702, tower drum lifting rotating device 8, lifting sliding seat 800, rotating sliding seat 801, cable automatic telescopic mechanism 802, circular guide rail 803, circular rack 804, rotating walking motor 805, rotating walking gear 806, lifting guide rail 807, lifting rack 808, lifting walking motor 809, lifting walking gear 810, damping plate 9. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figures 1-6 A kind of anti typhoon level composite fan system, including columnar foundation and the semi-submersible foundation of the utility model, semi-submersible foundation includes central ballast water tank 3 and several angle ballast water tank 4 around central ballast water tank 3, central ballast water tank 3 is connected with angle ballast water tank 4 by truss 5, central ballast water tank 3 is hollow structure, columnar foundation includes tower drum 1 set on semi-submersible foundation and fan 2 set on tower drum 1, tower drum 1 is inserted in central ballast water tank 3, with gap between the two, tower drum 1 can move up and down and horizontally rotate relative to central ballast water tank 3, the lower end tower drum ballast water tank 6 of tower drum 1, angle ballast water tank 4 bottom is provided with damping plate 9.

[0026] Please continue to refer to Figure 2 And Figure 4 Columnar foundation further includes fan turnover drive device 7 set on the upper end of tower drum 1, fan 2 is installed on tower drum 1 by fan turnover drive device 7, fan turnover drive device 7 drives fan 2 to overturn, so that fan 2 switches between vertical state and horizontal state.

[0027] Please continue to refer to Figure 4The fan overturning driving device 7 includes a fan mounting seat 700, a fan overturning driving motor 701 and a gear box 702. The fan mounting seat 700 is arranged on the upper end of the tower drum 1 and has a U-shaped structure. The two ends of the fan 2 are rotatably arranged on the fan mounting seat 700 through a fan rotating shaft. The fan overturning driving motor 701 and the gear box 702 are arranged in the fan mounting seat 700. The fan overturning driving motor 701, the gear box 702 and the fan rotating shaft on one side of the fan 2 are sequentially connected. The fan overturning driving motor 701 drives the fan 2 to overturn through the gear box 702. The gear box 702 is a known technology in the mechanical transmission field. The gear box 702 has two meshing bevel gears and transmission shafts for mounting the bevel gears. One of the transmission shafts is an input shaft connected with the fan overturning driving motor 701. The other transmission shaft is an output shaft connected with the fan rotating shaft.

[0028] When the fan overturning driving device 7 works, the fan overturning driving motor 701 drives the gear box 702 to work, and the gear box 702 drives the fan 2 to overturn.

[0029] It should be noted that the overturning driving is a known technology in the mechanical field, and the fan overturning driving device 7 can also be realized by other structures.

[0030] Continuously referring to Figure 2 and Figure 3 The anti-typhoon composite fan system further includes a tower drum lifting and rotating device 8. The tower drum lifting and rotating device 8 includes a plurality of lifting sliding seats 800, a plurality of rotating sliding seats 801 and a plurality of cable automatic telescopic mechanisms 802. The number of the lifting sliding seats 800, the rotating sliding seats 801 and the cable automatic telescopic mechanisms 802 is the same, and the positions are one-to-one corresponding. The plurality of lifting sliding seats 800 are arranged on the tower drum 1 in a ring shape. The lifting sliding seats 800 are slidably connected to the tower drum 1. The rotating sliding seats 801 are slidably connected to the central ballast water tank 3 in a circular arc track. The cable automatic telescopic mechanisms 802 are used to connect the lifting sliding seats 800 and the rotating sliding seats 801. The circular arc track is arranged along the hollow structure of the central ballast water tank 3, so that the rotating sliding seats 801 can move around the tower drum 1.

[0031] The cable automatic telescopic mechanism 802 can adopt an electric winch. The main body of the electric winch is arranged on the lifting sliding seat 800 or the rotating sliding seat 801. The cable of the electric winch is connected with the other one.

[0032] Continuously referring to Figure 2 and Figure 3, the tower lifting and rotating device 8 further comprises a circular guide rail 803 corresponding to the circular arc track and a plurality of lifting guide rails 807 arranged around the tower 1, the circular guide rail 803 is arranged on the central ballast tank 3, the tower 1 passes through the middle of the circular guide rail 803, and all rotating sliding seats 801 are in sliding fit with the circular guide rail 803, the lifting guide rails 807 are vertically laid on the tower 1, and the lifting sliding seats 800 are in upward and downward sliding fit with the lifting guide rails 807 in a one-to-one manner.

[0033] Continuing to refer to Figure 2 , Figure 3 and Figure 5 , the tower lifting and rotating device 8 further comprises a rotating walking driving device, the rotating walking driving device is arranged on the rotating sliding seat 801, and the rotating sliding seat 801 moves along the circular guide rail 803 through the rotating walking driving device. The tower lifting and rotating device 8 further comprises a circular rack 804 coaxial with the circular guide rail 803, the circular rack 804 is laid on the circular guide rail 803, and the rotating walking driving device comprises a rotating walking motor 805 and a rotating walking gear 806, the rotating walking motor 805 is arranged in the rotating sliding seat 801 and connected with the rotating walking gear 806, and the rotating walking gear 806 is in mesh with the circular rack 804.

[0034] When the rotating walking driving device works, the rotating walking motor 805 drives the rotating walking gear 806 to rotate, so that the rotating walking gear 806 walks along the circular rack 804, and the whole rotating sliding seat 801 is driven to rotate.

[0035] It should be noted that the implementation of the rotating sliding seat 801 autonomously walking on the circular guide rail 803 is a known technology in the mechanical field, and the rotating walking driving device and the circular rack 804 can also be replaced by other structures.

[0036] Continuing to refer to Figure 2 , Figure 3 and Figure 6 , the tower lifting and rotating device 8 further comprises a lifting walking driving device, the lifting walking driving device is arranged on the lifting sliding seat 800, and the lifting sliding seat 800 moves along the lifting guide rail 807 through the lifting walking driving device. The tower lifting and rotating device 8 further comprises a plurality of lifting racks 808 vertically laid on the lifting guide rail 807, and the lifting walking driving device comprises a lifting walking motor 809 and a lifting walking gear 810, the lifting walking motor 809 is arranged in the lifting sliding seat 800 and connected with the lifting walking gear 810, and the lifting walking gear 810 is in mesh with the lifting rack 808.

[0037] When the lifting walking driving device works, the lifting walking motor 809 drives the lifting walking gear 810 to rotate, so that the lifting walking gear 810 walks along the lifting rack 808, and the whole lifting sliding seat 800 is driven to lift.

[0038] It should be noted that the realization of the lifting sliding seat 800 autonomously walking on the lifting guide rail 807 is a known technology in the mechanical field, and the lifting walking driving device and the lifting rack 808 can also be replaced by other structures.

[0039] The central ballast water tank 3 and the corner ballast water tank 4 are both through the built-in water pump to suck and drain the water tank, which is a known technology and will not be repeated. In the case of severe wind and wave, the large volume of the central ballast water tank 3 will be filled with water to increase the draft of the entire system, so that the entire structure is more stable, and the corner ballast water tank 4 is used to adjust the weight and buoyancy by changing the internal horizontal plane to compensate for this error when the fan 2 works. In addition, the corner ballast water tank 4 is anchored to the seabed by a cable.

[0040] The ballast water tank drives the entire device to dive and rise by changing its weight, and the fan overturning driving device 7 is another core device. The traditional cabin is controlled by the yaw system to make the cabin rotate around the vertical shaft of the tower drum, so that the blades always face the wind direction. The anti-taiwan level composite fan system discards this design, and when a typhoon comes, the fan overturning driving device 7 can make the cabin rotate around the horizontal shaft, and finally make the cabin blades and hub face vertically upward, as shown in Figure 1 .

[0041] The yaw system of the entire system is essential, but the yaw device of the anti-taiwan level composite fan system has changed from the traditional tower drum and cabin to the tower lifting rotating device 8. When the yaw system works and the system needs to face the wind direction, the rotating sliding seat 801 moves around the circular guide rail 803, and after reaching the specified position, the cable is tightened to drive the tower drum 1 to rotate. However, the entire tower drum 1 needs to float and sink, so there is a lifting sliding seat 800 at the end of the connecting tower drum 1, which can move up and down through the built-in motor to make the cable always horizontal with the sea level.

[0042] The construction process of the anti-taiwan level composite fan system is as follows:

[0043] Among them, the main components of the semi-submersible foundation are the central ballast water tank, the truss, the corner ballast water tank, and the damping plate. The main components of the columnar foundation are the tower drum ballast water tank, the tower drum, the fan overturning driving device, and the fan.

[0044] The semi-submersible foundation is installed at a designated location on land, then lifted by a crane and placed on a barge, the semi-submersible foundation is transported to the wharf by the barge, the barge sinks and leaves, the semi-submersible foundation floats and approaches the wharf.

[0045] The column foundation is transported to the wharf by land transport vehicle, the tower cylinder ballast water tank and the tower cylinder and a series of parts thereon are first installed at the wharf, then the crane hoists and places the tower cylinder ballast water tank at the center of the semi-submersible foundation, the column foundation is floated, and the cable automatic extension mechanism is installed.

[0046] After installation, the cable is straightened, the whole column foundation tends to be stable, then the crane starts to install the fan overturning driving device and the fan in sequence.

[0047] It should be noted that all the electric control parts in the anti-typhoon composite fan system are waterproofed by the known waterproof measures.

[0048] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A semi-submersible foundation for a typhoon-rated hybrid wind turbine system, characterized by, The application relates to a central ballast water tank (3) and a plurality of corner ballast water tanks (4) arranged around the central ballast water tank (3), wherein the central ballast water tank (3) and the corner ballast water tank (4) are connected through a truss (5), the central ballast water tank (3) is a hollow structure, a plurality of rotating sliding seats (801) are arranged around the central ballast water tank (3), the rotating sliding seat (801) is in sliding fit with the central ballast water tank (3), and the sliding track of the rotating sliding seat (801) is arranged as an arc track with the central ballast water tank (3) as the center.

2. A semi-submersible foundation for a typhoon-resistant composite wind turbine system according to claim 1, characterized in that The central ballast water tank (3) is provided with a circular guide rail (803) corresponding to the arc track, and all the rotating sliding seats (801) are in sliding fit with the circular guide rail (803).

3. A semi-submersible foundation for a typhoon-resistant composite wind turbine system according to claim 2, characterized in that The rotating sliding seat (801) is provided with a rotating walking driving device, and the rotating sliding seat (801) moves on the central ballast water tank (3) through the rotating walking driving device.

4. A semi-submersible foundation for a typhoon-resistant composite wind turbine system according to claim 3, characterized in that The application further comprises a circular rack (804) coaxial with the circular guide rail (803), wherein the circular rack (804) is arranged on the central ballast water tank (3), the rotating walking driving device comprises a rotating walking motor (805) and a rotating walking gear (806), the rotating walking motor (805) is arranged on the rotating sliding seat (801) and connected with the rotating walking gear (806), and the rotating walking gear (806) is in mesh with the circular rack (804).

5. A semi-submersible foundation for a typhoon-resistant composite wind turbine system according to claim 4, characterized in that The circular rack (804) is arranged on the circular guide rail (803).

6. A semi-submersible foundation for a typhoon-resistant composite wind turbine system according to claim 1, characterized in that The corner ballast water tank (4) is provided with a damping plate (9) at the bottom.

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