CN113446164A

CN113446164A - Offshore wind power structure foundation

Info

Publication number: CN113446164A
Application number: CN202110911780.5A
Authority: CN
Inventors: 陈龙辉; 沈开
Original assignee: Taizhou Hengda Technology Co ltd
Current assignee: Taizhou Hengda Technology Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-09-28

Abstract

The invention relates to the field of offshore wind power generators, and particularly discloses an offshore wind power structure foundation which comprises a concrete embedded seat, a water floating seat and a connecting structure, wherein the concrete embedded seat is arranged on the sea bottom, the water floating seat floats on the sea surface, the connecting structure is respectively connected with the concrete embedded seat and the water floating seat, the connecting structure comprises fixed units and flexible units, the fixed units and the flexible units are connected in a staggered mode, and the upper end and the lower end of the connecting structure are both fixed units and are connected with the concrete embedded seat and the water floating seat. The invention aims to solve the technical problem that a wind driven generator is greatly vibrated and shaken under the influence of sea waves on the sea.

Description

Offshore wind power structure foundation

Technical Field

The invention relates to the field of offshore wind power generators, and particularly discloses an offshore wind power structure foundation.

Background

Offshore structures include drilling platforms, buoys, signal lights, wind generators, tidal generators, and the like, and the offshore structures are faced with problems of how to reduce vibration of the structures due to ocean waves, how to effectively control the moving range of the structures, how to effectively prevent the corrosion of building equipment, and the like. Buoy and signal lamp are generally the most common of the number measuring templates in the offshore building, and the buoy and the signal lamp are small in volume and mass, so that the buoy and the signal lamp are relatively convenient to fix, and have no requirements on vibration and shaking amplitude, so that the foundation is generally an anchor, and the buoy and the signal lamp are fixed by the anchor. The offshore wind turbine is quite suitable for arranging the wind driven generator due to the flat sea surface and strong wind power, but the wind driven generator is strongly influenced by vibration due to the sea waves and tides, and meanwhile, the wind driven generator is high in foundation cost and maintenance cost. Therefore, an offshore wind turbine foundation or foundation with relatively low cost and good vibration damping effect is needed.

Disclosure of Invention

In view of the above, the present invention provides an offshore wind power structure foundation, so as to solve the technical problem that a wind turbine is affected by sea waves and vibrates and shakes greatly at sea.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an offshore wind power structure basis, includes that the concrete buries seat, the seat and connection structure that float on water, the concrete buries the seat and sets up at the seabed, the seat that floats on water floats on the sea, connection structure buries the seat with the concrete respectively and floats on water the seat to be connected, connection structure includes fixed unit and flexible unit, fixed unit and flexible unit cross connection, connection structure's upper end and lower extreme are fixed unit and bury the seat with the concrete and float the seat on water and be connected. In this scheme, the concrete buries the seat setting in the seabed, provides stable holding power and pulling force, guarantees that the seat of floating on water can not float at will. Still be provided with connection structure in this scheme, connection structure can bury the seat with the concrete and float the seat on water and couple together, and connection structure is including fixed unit and flexible unit, and fixed unit can provide certain pulling force, with the seat tensioning that floats on water on the sea, avoids the seat floating range of floating on water too big, and flexible unit can provide certain deformation degree, and when the wave comes, flexible unit can take place to deform in order to consume the kinetic energy of wave, reduces the degree of rocking of the seat that floats on water.

Optionally, the seat that floats on water includes and floats a body, counter weight mechanism and mount pad, the mount pad sets up on floating a body, and the mount pad is used for installing aerogenerator, counter weight mechanism includes a plurality of bracing pieces and balancing weight, the bracing piece evenly sets up the bottom of floating a seat on water, the balancing weight sets up the bottom at the bracing piece. The counterweight mechanism in this scheme sets up in the bottom of the seat that floats on water, can reduce the holistic focus of the seat that floats on water and aerogenerator to this reduces rocking and the vibration range of the seat that floats on water.

Optionally, the fixing unit includes a fixing column, a fixing cavity is provided in the fixing column, a torsion spring is provided in the fixing cavity, a rotating shaft is provided on the torsion spring, the flexible unit includes a chain, one end of the chain is provided on the rotating shaft, and the chain is connected with the bottom of the adjacent fixing column. In the scheme, the torsion springs and the rotating shaft are arranged in the fixed columns, the chains are wound on the rotating shaft in a normal state, the adjacent fixed columns are abutted to form a columnar whole body, and the whole water floating seat and the wind driven generator are supported; when the seat that floats on water receives the wave influence, the seat that floats on water can take place rocking and drift of certain degree, and a plurality of fixed column separations this moment, the chain is by the pulling, and the chain receives the elastic restoring force of torsional spring can be taut the seat that floats on water to a certain extent, and the chain pulls the fixed column reconversion when the wave reduces, makes the fixed column play the supporting role.

Optionally, the upper end and the lower extreme of fixed column all are provided with the reinforcement ring, and adjacent the reinforcement ring of fixed column can offset from top to bottom. The upper and lower both ends of fixed column set up the length that the reinforcing ring can increase the fixed column, reduce material cost, satisfy the great sea area condition of degree of depth.

Optionally, the bottom of the floating seat on water is provided with a vibration damping structure, the vibration damping structure comprises a first spring and a cross-shaped vibration damping plate, the first spring is arranged at the bottom of the floating seat on water, and the vibration damping plate is arranged on the first spring. When the sea waves act on the vibration reduction plate, the vibration reduction plate can move and rock to absorb kinetic energy brought by the sea waves, and the rocking degree of the water floating seat is reduced.

Optionally, the four ends of the damping plate are tilted upwards and protrude above the sea surface. When the tip of damping plate perk, the wave just can be used earlier on the damping plate, and the damping plate receives the wave influence and rocks in the horizontal direction earlier, and the seat that floats on water rocks the reduction in the horizontal direction, but can float in vertical direction, and this mode of floating is less to aerogenerator's influence.

Optionally, gaps are left between the four ends of the vibration damping plate and the water floating seat. A gap is reserved between the vibration reduction plate and the water floating seat, and the vibration reduction plate can not touch the side wall of the water floating seat when swinging.

Optionally, the upper end and the lower end of the fixing column are both provided with a reinforcing groove for installing a reinforcing ring, a second spring is arranged in the reinforcing groove, and the reinforcing ring is slidably arranged in the reinforcing groove and connected with the second spring. In this scheme, the reinforcement ring can reciprocate under the effect of second spring to the reply rises the tide and moves back the tide.

The working principle and the beneficial effects of the scheme are as follows:

building foundation in this scheme buries seat and water and floats seat and connection structure triplex including the concrete, wherein the material cost that the seat was buried to the concrete is far less than the cost of the basis among the prior art, replace the partial structure of basis among the prior art with connection structure simultaneously, fixed column consumptive material is more among the connection structure, the reinforcing ring then consumptive material is few, also practice thrift the cost relatively, connection structure can also play the support simultaneously, taut and restriction water floats the effect of seat, though compare not stable enough with current basis, but can guarantee the security of water floating seat in the cost reduction, economy is also very high. Still be provided with the damping plate in this scheme and reduce rocking and the vibration range of the seat that floats on water, further guarantee aerogenerator's security.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a partial longitudinal cross-sectional view of the connection structure;

FIG. 3 is a partial structural schematic view of the damping plate, the first spring and the water float seat;

fig. 4 is a schematic structural view of the interior of the water floating seat.

The drawings are numbered as follows: the concrete floating seat comprises a concrete buried seat 1, a water floating seat 2, a connecting structure 3, a supporting rod 4, a balancing weight 5, a vibration damping plate 6, a fixing column 7, a fixing cavity 8, a rotating shaft 9, a chain 10, a reinforcing groove 11, a second spring 12, a reinforcing ring 13, a first spring 14, an outer shell 15 and an inner floating box 16.

Detailed Description

The following is further detailed by way of specific embodiments:

examples

An offshore wind power structure foundation is shown in figures 1-4 and comprises a concrete buried seat 1, a water floating seat 2 and a connecting structure 3.

The concrete buried seat 1 is arranged in the seabed, and the concrete buried seat 1 is of a reinforced concrete structure. The floating seat 2 comprises a floating seat body, a counterweight mechanism and a mounting seat, the floating seat body is arranged on the sea surface, the floating seat 2 comprises an outer shell 15 and an inner buoyancy tank, the outer shell 15 is cylindrical and is made of metal, the inner buoyancy tank is also cylindrical and is made of plastic, helium is filled in the inner buoyancy tank 16, and the inner buoyancy tank 16 is uniformly arranged along the inner circumferential direction of the outer shell 15. The mounting seat is fixedly arranged on the floating seat body and used for mounting the wind driven generator. The counter weight mechanism includes a plurality of bracing pieces 4 and balancing weight 5, and bracing piece 4 is four altogether, and bracing piece 4 is even fixed to be set up in the bottom of seat 2 that floats on water, and balancing weight 5 is fixed to be set up in the bottom of bracing piece 4, and balancing weight 5 adopts the great metal of density to make, and the main function is to reduce the focus of whole seat 2 that floats on water. The bottom of floating seat body still is provided with damping structure, and damping structure includes first spring 14 and criss-cross damping plate 6, and first spring 14 totally four and evenly arrange in the bottom of floating seat body, and first spring 14 is fixed to be set up in the bottom of floating seat 2 on water, and damping plate 6 is fixed to be set up on first spring 14. The four ends of the damping plate 6 are tilted upward and project above the sea surface. Gaps are reserved between the four end parts of the damping plate 6 and the water floating seat 2.

Connecting structure 3 buries seat 1 and the seat 2 that floats on water with the concrete respectively and is connected, and connecting structure 3 includes fixed unit and flexible unit, fixed unit and flexible unit cross connection, and connecting structure 3's upper end and lower extreme are fixed unit and bury seat 1 and the seat 2 that floats on water with the concrete and be connected.

The fixing unit comprises a fixing column 7, a fixing cavity 8 with an inverted T-shaped longitudinal section is arranged in the fixing column 7, a torsion spring is arranged in the fixing cavity 8, a rotating shaft 9 is arranged on the torsion spring, the flexible unit comprises a chain 10, one end of the chain 10 is arranged on the rotating shaft 9, and the chain 10 is connected with the bottom of the adjacent fixing column 7.

The upper end and the lower extreme of fixed column 7 all are provided with reinforcing ring 13, and adjacent reinforcing ring 13 of fixed column 7 can offset from top to bottom.

The upper end and the lower end of the fixing column 7 are respectively provided with a reinforcing groove 11 for installing a reinforcing ring 13, a second spring 12 is arranged in the reinforcing groove 11, and the reinforcing ring 13 is arranged in the reinforcing groove 11 in a sliding mode and connected with the second spring 12.

In the specific implementation:

under the natural state, a plurality of fixing columns 7 are overlapped up and down, the reinforcing rings 13 are abutted up and down, and the chain 10 is wound on the rotating shaft 9 and tensions the fixing columns 7 above the rotating shaft. When the wave is great, the wave is acted on damping plate 6 earlier, and damping plate 6 rocks about following, from top to bottom, consumes the wave to the energy that the seat 2 caused floats on the water, and rocking of floating seat body will reduce. When the water floating seat 2 drifts along with the sea wave, a plurality of fixed columns 7 are separated, the chain 10 can be pulled out, but under the action of the torsion spring, the pulling force of the chain 10 is larger and larger, the floating distance of the water floating seat 2 can be limited, and meanwhile, the chain 10 can also enable the fixed columns 7 to reset. When rising tide and falling tide, the height of the water floating seat 2 changes, and the reinforcing ring 13 in the scheme can move up and down along with the height change so as to deal with the change of the water floating seat 2.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.

Claims

1. An offshore wind power structure foundation which is characterized in that: bury seat, floating seat and connection structure on water including the concrete, the concrete buries the seat setting in the seabed, the floating seat floats on water on the sea, connection structure buries the seat with the concrete respectively and floats the seat with on water and is connected, connection structure includes fixed unit and flexible unit, fixed unit and flexible unit cross connection, connection structure's upper end and lower extreme are fixed unit and bury the seat with the concrete and float the seat with on water and be connected.

2. Offshore wind power structure foundation according to claim 1, characterized in that: the water floating seat comprises a floating seat body, a counterweight mechanism and a mounting seat, the mounting seat is arranged on the floating seat body, the mounting seat is used for mounting the wind driven generator, the counterweight mechanism comprises a plurality of supporting rods and a counterweight block, the supporting rods are uniformly arranged at the bottom of the water floating seat, and the counterweight block is arranged at the bottom of the supporting rods.

3. Offshore wind power structure foundation according to claim 2, characterized in that: the fixing unit comprises a fixing column, a fixing cavity is formed in the fixing column, a torsion spring is arranged in the fixing cavity, a rotating shaft is arranged on the torsion spring, the flexible unit comprises a chain, one end of the chain is arranged on the rotating shaft, and the chain is connected with the bottom of the adjacent fixing column.

4. Offshore wind power structure foundation according to claim 3, characterized in that: the upper end and the lower extreme of fixed column all are provided with the reinforcing ring, and are adjacent the reinforcing ring of fixed column can offset from top to bottom.

5. Offshore wind power structure foundation according to claim 4, characterized in that: the bottom of the water floating seat is provided with a vibration damping structure, the vibration damping structure comprises a first spring and a cross-shaped vibration damping plate, the first spring is arranged at the bottom of the water floating seat, and the vibration damping plate is arranged on the first spring.

6. Offshore wind power structure foundation according to claim 5, characterized in that: the four ends of the damping plate are tilted upwards and extend out of the sea surface.

7. Offshore wind power structure foundation according to claim 6, characterized in that: gaps are reserved between the four end parts of the vibration reduction plate and the water floating seat.

8. Offshore wind power structure foundation according to claim 7, characterized in that: the upper end and the lower end of the fixing column are both provided with reinforcing grooves for mounting reinforcing rings, second springs are arranged in the reinforcing grooves, and the reinforcing rings are arranged in the reinforcing grooves in a sliding mode and connected with the second springs.