CN215213776U

CN215213776U - Floating type fan foundation with hourglass-shaped floating box

Info

Publication number: CN215213776U
Application number: CN202121132989.3U
Authority: CN
Inventors: 田振亚; 朱嵘华; 徐清富; 秦齐; 涂智圣
Original assignee: Guangdong Huayun New Energy Co ltd; Yangjiang Offshore Wind Power Laboratory; Huanan Industrial Technology Research Institute of Zhejiang University
Current assignee: Guangdong Huayun New Energy Co ltd; Yangjiang Offshore Wind Power Laboratory; Huanan Industrial Technology Research Institute of Zhejiang University
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-12-17
Anticipated expiration: 2031-05-25

Abstract

The utility model belongs to offshore wind-power engineering field, concretely relates to showy formula fan basis with hourglass shape flotation tank, including a plurality of flotation tank subassemblies that constitute polygonized structure, connect through the coupling assembling cooperation that sets up between the adjacent flotation tank subassembly, the flotation tank subassembly is big for upper and lower two, middle little hourglass type structure, and it includes the safe redundant flotation pontoon of basis safety, flotation tank intermediate junction body and the main flotation pontoon that top-down cooperation is connected. The utility model discloses it is big to design into about the flotation tank subassembly, and the hourglass type structure that is little in the middle of two, receives ripples effective cross sectional area through reducing in the middle of, can effectively reduce the wave load of surface of water position to reduce the motion of flotation tank subassembly, promote the operating stability and the generated energy of unit.

Description

Floating type fan foundation with hourglass-shaped floating box

Technical Field

The utility model belongs to offshore wind power engineering field, concretely relates to float formula fan basis with hourglass shape flotation tank.

Background

With the rapid development of the offshore wind power industry in China, offshore wind resources are developed continuously, and the offshore wind power industry gradually develops towards deep sea at present. Compared with the traditional pile type foundation and jacket foundation and the floating type foundation, the floating type foundation has the advantages of being strong in adaptation to deep water conditions, capable of better utilizing wind energy resources and the like, and the advantages of the floating type foundation are more obvious along with the increase of water depth.

The existing floating foundation in Europe is mostly a three-cylinder pontoon type floating foundation, a fan tower cylinder and a wind wheel are erected above a pontoon box or at the geometric center of a foundation plane, the pontoon of the pontoon is in a form that the upper section and the lower section have the same diameter, and the motion of swaying, surging, yawing, rolling, pitching and heaving can occur after the action of waves and ocean currents on the sea surface, and the motion amplitude is large, so that the floating foundation is not beneficial to fan power generation, and the influence on the fatigue of the foundation can also be increased.

SUMMERY OF THE UTILITY MODEL

In order to compensate for the defects of the prior art, the utility model provides a float formula fan basis technical scheme with hourglass shape flotation tank.

A float formula fan basis with hourglass shape flotation tank, including a plurality of flotation tank subassemblies that constitute polygonized structure, connect through the coupling assembling cooperation that sets up between the adjacent flotation tank subassembly, its characterized in that the flotation tank subassembly is big for upper and lower two, little hourglass type structure in the middle, it includes the safe redundant flotation pontoon of basis, flotation tank intermediate junction body and the main flotation pontoon of top-down cooperation connection.

The floating type fan foundation with the hourglass-shaped buoyancy tanks is characterized in that the cross sectional area of the safe redundant buoyancy tanks of the foundation and the cross sectional area of the main buoyancy tanks are larger than the cross sectional area of the middle connecting body of the buoyancy tanks.

The floating type fan foundation with the hourglass-shaped buoyancy tanks is characterized in that the foundation safety redundant buoyancy tanks, the buoyancy tank middle connecting bodies and the main buoyancy tanks are all of circular structures.

The floating type fan foundation with the hourglass-shaped buoyancy tanks is characterized in that the bottom of the foundation safety redundant buoyancy tank is provided with a first conical transition section.

The floating type fan foundation with the hourglass-shaped buoyancy tanks is characterized in that the top of the main buoyancy tank is provided with a second conical transition section.

The floating type fan foundation with the hourglass-shaped buoyancy tanks is characterized in that the connecting assembly is of a truss structure.

The floating type fan foundation with the hourglass-shaped buoyancy tanks is characterized in that the truss structure is connected with the basic safety redundant buoyancy tanks and the main buoyancy tanks in the corresponding buoyancy tank assemblies.

The utility model provides a float formula fan basis with hourglass shape flotation tank which characterized in that the truss structure is including the cooperation connect in the first mounting between two basic safe redundant flotation pontoons, the cooperation connect in the second mounting between two main flotation pontoons and the cooperation connect in the third mounting between basic safe redundant flotation pontoon and second mounting.

The floating type fan foundation with the hourglass-shaped buoyancy tank is characterized in that the bottom of the main buoy is connected with a ballast tank in a matching mode.

The floating type fan foundation with the hourglass-shaped buoyancy tanks is characterized in that the cross-sectional area of the main buoy is smaller than that of the ballast tank.

The utility model has the advantages that:

1) the utility model designs the buoyancy tank assembly into a hourglass-shaped structure with large upper and lower ends and small middle, and can effectively reduce the wave load at the water surface position by reducing the effective cross-sectional area of the middle wave-receiving part, thereby reducing the motion of the buoyancy tank assembly and improving the operation stability and the generated energy of the unit;

2) the gravity center position of the foundation of the utility model is lower than that of the traditional foundation, which is beneficial to the reversion of the inclined state of the fan and has better stability;

3) when the buoyancy tank assembly is impacted by a ship, the basic safe redundant buoyancy tank at the upper part can provide enough buoyancy, and the buoyancy tank assembly cannot overturn even if the buoyancy tank assembly inclines;

4) the utility model discloses surface of water department resistance is little, more traditional floating type basis more suitably adopts the mode of wet fortune, requires relatively lessly to the ability of tow boat moreover, can practice thrift the cost of towing a voyage.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the usage state of the present invention.

Detailed Description

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The utility model provides a float formula fan basis with hourglass shape flotation tank utilizes special flotation tank structural style to arrange, compares in the darker floating basis of other drafts, can effectively reduce the wave load of effect on the basis, simultaneously, reduces the motion of body to guarantee that the unit can the safe and reliable operation, promote the generating efficiency simultaneously. The present invention will be further explained with reference to the accompanying drawings.

As shown in the figure, a float formula fan basis with hourglass shape flotation tank, includes a plurality of flotation tank subassemblies that constitute polygonized structure, connects through the coupling assembling cooperation that sets up between the adjacent flotation tank subassembly, the flotation tank subassembly is big for upper and lower both ends, and little hourglass type structure in the middle, and it includes the redundant flotation pontoon of basic safety 1, flotation tank intermediate junction body 2 and the main flotation pontoon 3 that top-down cooperation is connected.

As an optimization: the cross section area of the basic safety redundant buoy 1 and the cross section area of the main buoy 3 are both larger than the cross section area of the middle connecting body 2 of the buoyancy tank.

Further, the basic safety redundant buoy 1, the buoyancy tank middle connecting body 2 and the main buoy 3 are all of circular structures. The outer diameters of the basic safety redundant buoy 1 and the main buoy 3 are the same and are larger than the outer diameter of the middle connecting body 2 of the buoyancy tank. The bottom of the basic safety redundant buoy 1 is provided with a first conical transition section 100, the outer diameter of the top of the first conical transition section 100 is the same as that of the basic safety redundant buoy 1, and the outer diameter of the bottom is the same as that of the middle connecting body 2 of the buoyancy tank. The top of the main buoy 3 is provided with a second conical transition section 300, the outer diameter of the top of the second conical transition section 300 is the same as that of the middle connecting body 2 of the buoyancy tank, and the outer diameter of the bottom of the second conical transition section 300 is the same as that of the main buoy 3.

As an optimization: the coupling assembling is truss structure 4, truss structure 4 links to each other with basic safe redundant flotation pontoon 1 and the main flotation pontoon 3 among the corresponding flotation pontoon subassembly.

Further, the truss structure 4 includes a first fixing member 400 connected between the two basic safety redundant buoys 1 in a matching manner, a second fixing member 401 connected between the two main buoys 3 in a matching manner, and a third fixing member 402 connected between the basic safety redundant buoys 1 and the second fixing member 401 in a matching manner.

As an optimization: the bottom of the main buoy 3 is connected with a ballast tank 5 in a matching way. Wherein the cross-sectional area of the main buoy 3 is smaller than the cross-sectional area of the ballast tank 5.

The design principle of the utility model is as follows:

when buoyancy tank subassembly bottom segment provides enough buoyancy, buoyancy tank subassembly middle part is less in near position diameter of the surface of water, and according to the calculation formula of Morison wave force, the wave force that the wave produced the cylinder reduces and reduces along with the diameter to near the marine wind power showy formula basis surface of water received the sea condition influence and leaded to the great problem of body motion.

The application precondition of the Morison wave force calculation formula is as follows: d/lambda is less than 0.2, wherein D is the diameter of the tubular pile member at the still water level, and lambda is the wavelength.

The calculation formula of the Morison wave force is as follows:

wherein Cm is an inertia force coefficient, and the constant is generally 2.0;

cd is the drag force coefficient, and the constant is generally 1.2;

u is the relative velocity of the water particle perpendicular to the component axis;

acceleration of water particles perpendicular to the component axis;

d, the diameter of the member submerged in water;

ρ: density of seawater.

From the above-mentioned Morison formula, under the condition that the water quality point speed and acceleration are not changed, by reducing the diameter of the member, the wave force of the structure can be reduced. Because the wave action force near the water surface line is large, the diameter of the buoyancy tank near the water surface line is reduced, and the wave force is reduced. And what the ballast tank 5 of flotation tank bottom adopted is than the structure that main flotation pontoon 3 diameter is big, and the leading cause is that this part is kept away from the water-plane line, receives the wave power less, through setting up great ballast tank 4 diameters, not only can provide sufficient ballast volume, can effectively promote holistic buoyancy moreover.

The effect of the basic safe redundant buoy 1 is that when the main buoy 3 near the water surface line is impacted by a ship, the cabin is broken, and when the whole buoy inclines, the safe redundant buoy 1 on the upper part still can provide buoyancy, so that the buoy assembly is guaranteed to incline but not overturn.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a float formula fan basis with hourglass shape flotation tank, includes a plurality of flotation tank subassemblies that constitute polygonized structure, connects through the coupling assembling cooperation that sets up between the adjacent flotation tank subassembly, its characterized in that the flotation tank subassembly is big for upper and lower two, and the hourglass shape structure that the centre is little, and it includes basic safe redundant flotation pontoon (1), flotation tank intermediate junction body (2) and main flotation pontoon (3) that top-down cooperation is connected.

2. Floating wind turbine foundation with hourglass-shaped pontoon according to claim 1, characterized in that the cross-sectional area of the foundation safety redundant pontoon (1) and the cross-sectional area of the main pontoon (3) are both larger than the cross-sectional area of the pontoon intermediate connection body (2).

3. Floating wind turbine foundation with hourglass-shaped pontoons, according to claim 1, wherein the foundation safety redundant pontoon (1), the pontoon intermediate connector (2) and the main pontoon (3) are all circular structures.

4. A floating wind turbine foundation with hourglass-shaped pontoons, as claimed in claim 3, wherein the bottom of the foundation safety redundant pontoon (1) has a first conical transition section (100).

5. A floating wind turbine foundation having an hourglass-shaped pontoon according to claim 3, wherein the top of the main pontoon (3) has a second conical transition section (300).

6. A floating wind turbine foundation having an hourglass-shaped buoyancy tank according to any one of claims 1-5, wherein the connecting members are truss structures (4).

7. Floating wind turbine foundation with hourglass buoyancy tanks according to claim 6, characterised in that the truss structure (4) is connected to the foundation safety redundant buoy (1) and the main buoy (3) in the corresponding buoyancy tank assembly.

8. A floating wind turbine foundation according to claim 6, characterised in that the truss structure (4) comprises a first fixture (400) fittingly connected between two basic safety redundant buoys (1), a second fixture (401) fittingly connected between two main buoys (3) and a third fixture (402) fittingly connected between the basic safety redundant buoys (1) and the second fixture (401).

9. A floating fan foundation according to any of claims 1-5 having an hourglass-shaped buoyancy tank, characterized in that the bottom of the main pontoon (3) is fittingly connected to a ballast tank (5).

10. Floating fan foundation with hourglass shape buoyancy tank according to claim 9, characterized in that the cross-sectional area of the main buoy (3) is smaller than the cross-sectional area of the ballast tank (5).