Vertical axis wind-flow energy power generation platform and operation method thereof

Abstract

The invention relates to a vertical axis wind-flow energy power generation platform and an operation method thereof.The vertical axis wind-flow energy power generation platform comprises a platform body, an adjustable gearbox, a vertical axis fan and a vertical axis water turbine, and the platform body comprises a main stand column and a plurality of auxiliary stand columns; the adjustable gearbox is arranged in the main stand column; the vertical shaft fan comprises a fan shaft and a plurality of fan blades; the vertical shaft water turbine comprises a water turbine shaft and a plurality of water turbine blades; a fan shaft is connected with one end of the adjustable gearbox, and a water turbine shaft is connected with the other end of the adjustable gearbox; the transmission ratio gamma is adjusted through the adjustable gearbox, gamma = n wind / n flow, n wind is the rotating speed of the vertical axis fan, and n flow is the rotating speed of the vertical axis water turbine; and the rotating directions of the vertical shaft fan and the vertical shaft water turbine are opposite. Functional coupling of the vertical-axis fan and the vertical-axis water turbine is achieved by adjusting the transmission ratio of the adjustable gearbox, the vertical-axis fan and the vertical-axis water turbine are combined into a whole, and offshore wind energy and tidal current energy can be developed at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of seawater wind energy and tidal current energy development, in particular to a vertical axis wind-current energy power generation platform and an operation method thereof. Background Art

[0002] The full development of offshore renewable energy will help enhance the security and stability of my country's energy supply chain, promote the transformation of energy supply structure to green and low-carbon, and provide power guarantee for the development of deep-sea marine resources. Tidal energy refers to the kinetic energy of tidal flow, mainly referring to the energy brought by the periodic rise and fall of sea water on the earth's surface caused by the gravitational effects of the moon, the sun, etc. Compared with waves, the changes of tidal currents are more stable and regular. Tidal currents change in size and direction twice a day on average with the rise and fall of tides. Vertical axis wind turbines have great application advantages in sea areas with variable wind direction because they are not affected by the direction of the wind, but they also have some limitations: they are difficult to start in a breeze, excessive wind speeds can easily lead to overload, and they will produce a certain torque on floating platforms.

[0003] Existing vertical axis wind turbines are difficult to start in light wind conditions, are easily overloaded when the wind speed is too high, will generate a certain torque on the floating platform, and cannot be developed in combination with other renewable energy sources.

[0004] To this end, we propose a vertical axis wind-current energy power generation platform and its operation method. Summary of the invention

[0005] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a vertical axis wind-current energy power generation platform and an operation method thereof, so that by adjusting the transmission ratio of the adjustable gearbox, the functional coupling of the vertical axis fan and the vertical axis water turbine is achieved. The vertical axis fan and the vertical axis water turbine are combined into one, which can simultaneously develop offshore wind energy and tidal energy and has good economy.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A vertical axis wind-current energy power generation platform, comprising:

[0008] The platform body includes a main column and a plurality of auxiliary columns;

[0009] An adjustable gearbox, set in the main column;

[0010] A vertical axis fan comprising a fan shaft and a plurality of fan blades;

[0011] A vertical axis turbine comprising a turbine shaft and a plurality of turbine blades;

[0012] The fan shaft is connected to one end of the adjustable gearbox, and the turbine shaft is connected to the other end of the adjustable gearbox. The transmission ratio γ is adjusted by the adjustable gearbox, γ = n风 / n 流 , where n 风 is the speed of the vertical axis fan, n 流 is the speed of the vertical axis turbine;

[0013] The vertical axis fans and vertical axis turbines rotate in opposite directions.

[0014] It is further characterized by:

[0015] The main column and the auxiliary column are connected through a connecting structure. A mounting groove which runs through from top to bottom is arranged on the main column, and the adjustable gearbox is arranged in the mounting groove.

[0016] The central axes of the fan shaft, the turbine shaft and the mounting groove are located on a straight line.

[0017] The outer surface of the adjustable gearbox is fixed to the mounting groove without relative movement.

[0018] The fan shaft and the fan blades are fixedly connected via a first connecting rod, and the fan shaft, the fan blades and the first connecting rod do not move relative to each other.

[0019] The turbine blades are fixedly connected to the turbine shaft via a second connecting rod, and the turbine shaft, the turbine blades and the second connecting rod do not move relative to each other.

[0020] The number of the auxiliary columns is three.

[0021] Two auxiliary columns are provided.

[0022] The number of auxiliary columns is four.

[0023] The present invention also discloses an operation method of a vertical axis wind-current energy power generation platform, comprising the following steps:

[0024] According to the wind speed and flow velocity under normal conditions in the sea area, the speed n of the vertical axis wind turbine is obtained through model tests and numerical simulations. 风0 , get the speed n of the vertical axis turbine 流0 , set the initial transmission ratio γ0 of the adjustable gearbox. Under this transmission ratio, the vertical axis wind turbine and the vertical axis water turbine generate electricity independently without affecting each other;

[0025] When the wind speed is too low, the vertical axis fan cannot start by itself. The transmission ratio γ is increased by the adjustable gearbox, so that the vertical axis turbine drives the vertical axis fan to rotate, and the vertical axis fan can be started normally when the wind speed is too low.

[0026] When the wind speed is too high, the vertical axis fan is at risk of overload. The transmission ratio γ is reduced by the adjustable gearbox so that the vertical axis turbine hinders the rotation of the vertical axis fan, thereby reducing the speed of the vertical axis fan to a safe range and preventing overload.

[0027] The beneficial effects of the present invention are as follows:

[0028] The invention has a compact and reasonable structure and is easy to operate. The vertical axis fan and the vertical axis water turbine are combined into one, which can simultaneously develop offshore wind energy and tidal energy and has good economy. By adjusting the transmission ratio of the adjustable gearbox, the functional coupling of the vertical axis fan and the vertical axis water turbine is realized: the flow velocity in the ocean changes slightly, while the wind speed changes greatly. According to the wind speed and flow velocity under normal circumstances in the sea area where the vertical axis fan and the vertical axis water turbine are deployed, they generate electricity separately without affecting each other; when the wind speed is too small, the vertical axis water turbine drives the vertical axis fan to help it start and accelerate; when the wind speed is too large, the vertical axis water turbine prevents the vertical axis fan from rotating too fast to prevent it from overloading. The vertical axis fan and the vertical axis water turbine rotate in opposite directions, which can reduce or offset the torque generated by them on the platform and improve the safety of the platform structure. In addition, the vertical axis water turbine can also increase the motion damping of the platform, so that the platform moves smoothly in wind and waves. The structure is simple in composition, easy to implement in engineering, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention.

[0030] Figure 2 for Figure 1 main view.

[0031] Figure 3 It is a schematic diagram of the platform body of the present invention.

[0032] Figure 4 It is a schematic diagram of the vertical axis fan, vertical axis turbine and adjustable gearbox of the present invention.

[0033] Figure 5 Other structures of the present invention are shown in FIG. Figure 1 .

[0034] Figure 6 Other structures of the present invention are shown in FIG. Figure 2 .

[0035] Among them: 1. Platform body; 2. Vertical axis fan; 3. Vertical axis turbine; 4. Adjustable gearbox; 11. Main column; 12. Auxiliary column; 13. Connection structure; 14. Mounting groove; 21. Fan shaft; 22. Fan blades; 23. First connecting rod; 31. Turbine shaft; 32. Turbine blades; 33. Second connecting rod. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0037] like Figure 1-Figure 6As shown, a vertical axis wind-current energy power generation platform includes a platform body 1, a vertical axis fan 2, a vertical axis water turbine 3 and an adjustable gearbox 4. The platform body 1 is arranged on the adjustable gearbox 4, one end of the adjustable gearbox 4 is connected to the vertical axis fan 2, and the other end of the adjustable gearbox 4 is connected to the vertical axis water turbine 3.

[0038] The platform body 1 is a semi-submerged structure, and includes a main column 11, a connecting structure 13, and a plurality of auxiliary columns 12. The main column 11 is provided with an installation groove 14 that passes through from top to bottom, and the platform body 1 is connected to the auxiliary columns 12 through the connecting structure 13. The adjustable gearbox 4 is arranged in the installation groove 14.

[0039] In one embodiment, three auxiliary columns 12 are provided, and the three auxiliary columns 12 are evenly spaced apart.

[0040] In one embodiment, two auxiliary columns 12 are provided, and the two auxiliary columns 12 are also connected by a connecting structure 13 .

[0041] In one embodiment, four auxiliary columns 12 are provided, and the four auxiliary columns 12 are evenly spaced apart.

[0042] The vertical axis fan 2 includes a fan shaft 21, fan blades 22 and a first connecting rod 23. A plurality of fan blades 22 are provided. The fan blades 22 are fixedly connected to the fan shaft 21 through the first connecting rod 23. The fan shaft 21 is connected to one end of the adjustable gearbox 4.

[0043] The fan shaft 21 , the fan blades 22 and the first connecting rod 23 do not move relative to each other.

[0044] The vertical axis turbine 3 comprises a turbine shaft 31, a turbine blade 32 and a second connecting rod 33, wherein a plurality of turbine blades 32 are provided. The turbine blade 32 is fixedly connected to the turbine shaft 31 via the second connecting rod 33. The turbine shaft 31 is connected to the other end of the adjustable gearbox 4.

[0045] The turbine shaft 31 , the turbine blades 32 and the second connecting rod 33 do not move relative to each other.

[0046] The vertical axis fan 2 and the vertical axis turbine 3 rotate in opposite directions.

[0047] The upper end of the adjustable gearbox 4 is connected to the fan shaft 21, and the lower end of the adjustable gearbox 4 is connected to the turbine shaft 31. The adjustable gearbox 4 can adjust the transmission ratio γ as needed, γ=n 风 / n 流 , where n 风 is the speed of vertical axis fan 2, n 流 is the rotation speed of the vertical axis turbine 3.

[0048] The central axes of the fan shaft 21, the turbine shaft 31 and the mounting groove 14 are located on a straight line, and the outer surface of the adjustable gearbox 4 is fixed to the mounting groove 14 without relative movement.

[0049] The vertical axis fan 2 and the vertical axis water turbine 3 are combined into one, which can simultaneously develop offshore wind energy and tidal energy, and has good economic efficiency. By adjusting the transmission ratio of the adjustable gearbox 4, the functional coupling of the vertical axis fan 2 and the vertical axis water turbine 3 is realized: the flow velocity in the ocean changes slightly, while the wind speed changes greatly. According to the wind speed and flow velocity under normal circumstances in the sea area where they are deployed, the vertical axis fan 2 and the vertical axis water turbine 3 generate electricity separately without affecting each other; when the wind speed is too low, the vertical axis water turbine 3 drives the vertical axis fan 2 to help it start and accelerate; when the wind speed is too high, the vertical axis water turbine 3 prevents the vertical axis fan 2 from rotating too fast to prevent it from overloading. The vertical axis fan 2 and the vertical axis water turbine 3 rotate in opposite directions, which can reduce or offset the torque generated by them on the platform and improve the safety of the platform structure. In addition, the vertical axis water turbine 3 can also increase the motion damping of the platform, so that the platform moves smoothly in wind and waves. The structure is simple in composition, easy to implement in engineering, and has broad application prospects.

[0050] A method for operating a vertical axis wind-current energy power generation platform comprises the following steps:

[0051] According to the wind speed and flow velocity under normal conditions in the sea area, the speed n of the vertical axis wind turbine 2 is obtained through model tests and numerical simulations. 风0 , get the speed n of vertical axis turbine 3 流0 , setting the initial transmission ratio γ0 of the adjustable gearbox 4, under which the vertical axis fan 2 and the vertical axis turbine 3 generate electricity independently without affecting each other;

[0052] When the wind speed is too low, the vertical axis fan 2 cannot start by itself. The transmission ratio γ is increased by the adjustable gearbox 4, so that the vertical axis turbine 3 drives the vertical axis fan 2 to rotate, thereby realizing the normal start of the vertical axis fan 2 when the wind speed is too low.

[0053] When the wind speed is too high, the vertical axis fan 2 is at risk of overloading. The transmission ratio γ is reduced by the adjustable gearbox 4, so that the vertical axis turbine 3 hinders the rotation of the vertical axis fan 2, thereby reducing the speed of the vertical axis fan 2 to a safe range to prevent overloading.

[0054] The vertical axis fan 2 and the vertical axis water turbine 3 are combined into one, which can simultaneously develop offshore wind energy and tidal energy, and has good economic efficiency. The function coupling of the vertical axis fan 2 and the vertical axis water turbine 3 is realized by adjusting the transmission ratio of the gearbox 4: under high-power wind speed and flow rate, the vertical axis fan 2 and the vertical axis water turbine 3 generate electricity separately without affecting each other; when the wind speed is too low, the vertical axis water turbine 3 drives the vertical axis fan 2 to help it start and accelerate; when the wind speed is too high, the vertical axis water turbine 3 prevents the vertical axis fan 2 from rotating too fast to prevent it from overloading. The vertical axis fan 2 and the vertical axis water turbine 3 rotate in opposite directions, which can reduce or offset the torque generated by them on the platform and improve the safety of the platform structure. In addition, the vertical axis water turbine 3 can also increase the motion damping of the platform, so that the platform moves smoothly in wind and waves. The structure is simple in composition, easy to implement in engineering, and has broad application prospects.

[0055] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A vertical axis wind-current energy power generation platform, characterized in that: include: A platform body (1) comprising a main column (11) and a plurality of auxiliary columns (12); An adjustable gearbox (4) is arranged in the main column (11); A vertical axis fan (2), comprising a fan shaft (21) and a plurality of fan blades (22); A vertical axis turbine (3), comprising a turbine shaft (31) and a plurality of turbine blades (32); The fan shaft (21) is connected to one end of the adjustable gearbox (4), and the turbine shaft (31) is connected to the other end of the adjustable gearbox (4); the transmission ratio γ is adjusted by the adjustable gearbox (4), γ=n 风 / n 流 , where n 风 is the speed of the vertical axis fan (2), n 流 is the rotation speed of the vertical axis turbine (3); The vertical axis fan (2) and the vertical axis turbine (3) rotate in opposite directions.

2. A vertical axis wind-current energy power generation platform as claimed in claim 1, characterized in that: The main column (11) and the auxiliary column (12) are connected via a connecting structure (13); a mounting groove (14) penetrating vertically is provided on the main column (11); and the adjustable gearbox (4) is arranged in the mounting groove (14).

3. A vertical axis wind-current energy power generation platform as claimed in claim 2, characterized in that: The central axes of the fan shaft (21), the turbine shaft (31) and the mounting groove (14) are located on a straight line.

4. A vertical axis wind-current energy power generation platform as claimed in claim 3, characterized in that: The outer surface of the adjustable gearbox (4) is fixed to the mounting groove (14) without relative movement.

5. A vertical axis wind-current energy power generation platform as claimed in claim 1, characterized in that: The fan shaft (21) and the fan blades (22) are fixedly connected via a first connecting rod (23), and the fan shaft (21), the fan blades (22) and the first connecting rod (23) do not move relative to each other.

6. A vertical axis wind-current energy power generation platform as claimed in claim 1, characterized in that: The water turbine blades (32) are fixedly connected to the water turbine shaft (31) via a second connecting rod (33); the water turbine shaft (31), the water turbine blades (32) and the second connecting rod (33) do not move relative to each other.

7. A vertical axis wind-current energy power generation platform as claimed in claim 1, characterized in that: Three auxiliary columns (12) are provided.

8. A vertical axis wind-current energy power generation platform as claimed in claim 1, characterized in that: Two auxiliary columns (12) are provided.

9. A vertical axis wind-current energy power generation platform as claimed in claim 1, characterized in that: Four auxiliary columns (12) are provided.

10. A method for operating a vertical axis wind-current energy power generation platform, characterized in that: The steps include: According to the wind speed and flow velocity under normal conditions in the sea area where the vertical axis wind turbine (2) is deployed, the speed n is obtained through model tests and numerical simulations. 风0 , and the speed n of the vertical axis turbine (3) is obtained 流0 , setting an initial transmission ratio γ0 of the adjustable gearbox (4), under which the vertical axis fan (2) and the vertical axis turbine (3) generate electricity independently without affecting each other; When the wind speed is too low, the vertical axis fan (2) cannot start by itself, and the transmission ratio γ is increased by the adjustable gearbox (4), so that the vertical axis turbine (3) drives the vertical axis fan (2) to rotate, thereby realizing normal starting of the vertical axis fan (2) when the wind speed is too low; When the wind speed is too high, the vertical axis fan (2) is at risk of overloading. The transmission ratio γ is reduced by the adjustable gearbox (4), so that the vertical axis turbine (3) hinders the rotation of the vertical axis fan (2), thereby reducing the rotation speed of the vertical axis fan (2) to a safe range and preventing overloading.

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