Annular water turbine tidal current energy power generation and semi-submersible wind turbine power generation device

Abstract

The invention discloses an annular water turbine tidal current energy power generation and semi-submersible wind turbine power generation device, and belongs to the technical field of renewable energy sources, the annular water turbine tidal current energy power generation and semi-submersible wind turbine power generation device comprises an annular water turbine, a wind turbine and a semi-submersible platform, the wind turbine comprises a tower, and fan blades and a wind turbine are arranged on the top of the tower; the bottom of the tower is arranged in the center of the semi-submersible platform through a truss, and the annular water turbine is arranged in the semi-submersible platform. By the adoption of the structure, a wind power generation device and an annular water turbine tidal current energy power generation device are integrated in the semi-submersible platform, the space is reasonably arranged, and the wind turbine and the annular water turbine are arranged in the semi-submersible platform, so that the power generation efficiency of the semi-submersible platform is improved, and wind energy and tidal current energy can be applied to power generation at the same time; and by sharing the floating structure and arranging the corresponding mooring structure, the operation and construction cost is reduced, and therefore full utilization of ocean renewable energy sources is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of marine renewable energy power generation, and in particular to a power generation device of an annular water turbine tidal current power generation and a semi-submersible wind turbine. Background Art

[0002] The application of renewable energy has saved the use of traditional fossil energy and reduced damage to the environment. With the development of renewable energy, reducing the cost of power generation has become the biggest difficulty, and integrating multiple renewable energy sources is one of the solutions. Wind power generation is a large-scale renewable energy with relatively mature technology. Integrating tidal energy on the floating platform of wind turbines can increase the power generation of the entire device, and can share floating structures and moorings, which can effectively reduce the cost of tidal energy and wind power generation.

[0003] However, floating marine structures will be subject to various environmental loads such as wind, waves and currents in complex and changeable deep-sea environments, which poses a huge challenge to semi-submersible floating structures. The turbines used in traditional tidal power generation are horizontal-axis turbines. Under the influence of ocean currents, the integration of floating semi-submersible wind turbines will increase the load on the semi-submersible platform. Therefore, it is necessary to propose a new power generation device that integrates a turbine and a floating wind turbine.

[0004] At present, tidal energy and wind power generation integrated devices have been proposed, such as:

[0005] CN202210106315.9 discloses an offshore power generation device integrating ocean energy, photovoltaic and wind energy, which includes wind power generation equipment, solar photovoltaic panels, supporting truss structures, wave power generation equipment, wind turbine floating foundation and tidal power generation equipment. The device relies on the wind power generation foundation, and arranges the wind turbine, photovoltaic panels, wave power generation equipment and tidal power generation equipment closely in the vertical direction, realizing the three-dimensional development of wind energy, solar energy, wave energy and tidal energy. Without increasing the sea area, it not only greatly increases the power generation and increases the economic benefits of the project, but also makes full use of the wind power generation foundation and increases the utilization rate of the sea area. It can also use wind power generation submarine cables, booster stations and other facilities to uniformly transmit the generated electricity to the power grid, without having to build new substations and increase submarine cables, so as to maximize the utilization of existing resources. However, the complex underwater truss structure and the presence of floating bodies such as horizontal axis turbines will increase the environmental load of the floating structure, and the reliability is low, which increases the maintenance cost. Summary of the invention

[0006] The purpose of the present invention is to provide a power generation device of an annular turbine tidal energy power generation and a semi-submersible wind turbine. By arranging the annular turbine tidal energy power generation device at the bottom of the buoy of the semi-submersible wind turbine platform, the internal space of the semi-submersible platform buoy is fully utilized, and the overall power generation of the device can be increased without affecting the normal power generation of the wind turbine.

[0007] To achieve the above-mentioned purpose, the present invention provides a power generation device of an annular water turbine tidal energy power generation and a semi-submersible wind turbine, comprising an annular water turbine, a wind turbine and a semi-submersible platform, wherein the wind turbine comprises a tower, and the top of the tower is provided with wind turbine blades and a wind generator, the bottom of the tower is arranged at the central position of the semi-submersible platform through a truss, and the annular water turbine is arranged inside the semi-submersible platform.

[0008] Preferably, the semi-submersible platform includes a plurality of pontoons, the interior of the pontoons is configured as a watertight compartment, the watertight compartment includes a generator compartment, a ballast water tank is arranged around the bottom of the generator compartment, a through hole is arranged at the bottom of the generator compartment, a watertight ring is arranged on the inner wall of the through hole, a sealing cover is arranged on the inner side of the through hole, the sealing cover is used to close the through hole, a generator is arranged vertically downward inside the generator compartment, and the transmission shaft of the generator is connected to the annular turbine.

[0009] Preferably, the annular turbine includes blades and a hub, the blades are arranged as a closed-loop blade structure, and the hub passes through the through hole and is connected to the transmission shaft via a coupling.

[0010] Preferably, a seawater pump is provided inside the ballast water tank, and the seawater pump adjusts the water level in the ballast water tank.

[0011] Preferably, the power generation of the annular turbine is calculated according to the following formula:

[0012]

[0013] In the above formula, W is the work done by the turbine, ρ is the air density, g is the acceleration due to gravity, and Q i is the unit water flow rate, v0 is the water inflow velocity, v i is the turbine wake velocity.

[0014] Therefore, the present invention adopts the above-mentioned annular turbine tidal current power generation and semi-submersible wind turbine power generation device, which has the following advantages:

[0015] (1) In the present invention, tidal power generation and wind power generation are integrated to achieve multi-energy supply and increase the overall power generation of the device.

[0016] (2) In the present invention, a vertical axis annular turbine is used to capture tidal energy, which has strong adaptability to flow direction and avoids thrust concentration, with little impact on the semi-submersible platform. The annular turbine and tidal energy generator are disassembled to facilitate transportation and avoidance of danger under extreme working conditions.

[0017] (3) In the present invention, by arranging the tidal energy generator in the buoy of the semi-submersible platform, the device space is fully utilized, and direct contact between the generator and seawater is avoided, thereby improving the reliability and service life of the tidal energy generator.

[0018] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a power generation device of a ring-shaped water turbine tidal current energy generation and a semi-submersible wind turbine according to the present invention;

[0020] Figure 2 It is a side view of a power generation device of a ring-shaped water turbine tidal current energy generation and a semi-submersible wind turbine according to the present invention;

[0021] Figure 3 A top view of a power generation device of a ring-shaped water turbine tidal current energy generator and a semi-submersible wind turbine according to the present invention;

[0022] Figure 4 It is a schematic diagram of the internal structure of a buoy in a power generation device of a ring-shaped water turbine tidal current energy generation and a semi-submersible wind turbine according to the present invention;

[0023] Figure numerals: 1. semi-submersible platform; 11. buoy; 111. generator compartment; 112. ballast water tank; 113. sealing cover; 114. watertight ring; 115. seawater pump; 12. truss; 2. wind turbine; 21. wind turbine blade; 22. wind turbine; 23. tower; 3. ring turbine; 31. blade; 32. hub; 33. generator; 34. transmission shaft; 35. coupling. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. The specific model specifications need to be selected and determined according to the actual specifications of the device, and the specific selection calculation structure adopts the existing technology in the field, so it will not be described in detail.

[0025] Example

[0026] like Figure 1-Figure 4As shown, the present invention provides a power generation device of an annular turbine tidal energy power generation and a semi-submersible wind turbine, comprising an annular turbine 3, a wind turbine 2 and a semi-submersible platform 1, wherein the wind turbine 2 comprises a tower 23, on the top of which are arranged wind turbine blades 21 and a wind generator 22, the bottom of the tower 23 is arranged at the central position of the semi-submersible platform 1 through a truss 12, the tower 23 is used to fix the wind turbine 2 during the power generation process, and the annular turbine 3 is arranged inside the semi-submersible platform 1.

[0027] The semi-submersible platform 1 includes a plurality of pontoons 11. In the present embodiment, three pontoons 11 are specifically provided to form a triangular structure. The pontoons 11 are connected by trusses 12. The pontoons 11 provide corresponding buoyancy to the platform. The interior of the pontoons 11 is provided as a watertight compartment. The watertight compartment includes a generator compartment 111. A ballast water tank 112 is provided around the bottom of the generator compartment 111. A through hole is provided at the bottom of the generator compartment 111. A watertight ring 114 is provided on the inner wall of the through hole. The watertight ring 114 seals the through hole to prevent seawater from pouring into the interior. A sealing cover 113 is provided on the inner side of the through hole. A generator 33 is vertically provided downwardly inside the generator compartment 111. A transmission shaft 34 of the generator 33 passes through the through hole. The transmission shaft 34 of the generator 33 is connected to the annular turbine 3. When the annular turbine 3 is removed, the through hole is closed by the sealing cover 113.

[0028] The annular turbine 3 includes blades 31 and a hub 32 . The blades 31 are arranged as a closed-loop blade structure. The hub 32 passes through a through hole and is connected to a transmission shaft 34 using a coupling 35 . The coupling 35 is used for easy disassembly.

[0029] A seawater pump 115 is provided inside the ballast water tank 112. The seawater pump 115 adjusts the water level in the ballast water tank 112 by sucking in or discharging seawater, thereby adjusting the center of gravity height and diving depth of the semi-submersible platform.

[0030] The power generation of the ring turbine is calculated as follows:

[0031]

[0032] In the above formula, W is the work done by the turbine, ρ is the air density, g is the acceleration due to gravity, and Q i is the unit water flow rate, v0 is the water inflow velocity, v i is the turbine wake velocity.

[0033] The specific usage process is as follows: After the annular water turbine is installed, the wind turbine uses the sea breeze to drive the wind generator to rotate and generate electricity. The annular water turbine drives the generator inside the buoy to rotate and generate electricity. When the annular water turbine fails, the coupling can be used to easily and quickly separate the annular water turbine from the generator, and then replace it with a new one. The additional sealing cover and watertight ring can effectively prevent seawater backflow.

[0034] Therefore, the present invention adopts a power generation device of annular water turbine tidal energy power generation and a semi-submersible wind turbine, integrates wind power generation and tidal energy power generation devices in a semi-submersible platform, uses annular water turbine integration to minimize the adverse effects of the water turbine on the semi-submersible platform, and improves the power generation efficiency of the semi-submersible platform by reasonably arranging the space, and simultaneously applies wind energy and tidal energy to generate electricity, thereby increasing the power generation of the power generation device. By additionally setting up a floating structure and mooring, the operating and construction costs are reduced, thereby achieving full utilization of marine renewable energy.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A power generation device of a ring-shaped water turbine tidal current power generation and a semi-submersible wind turbine, characterized in that: The invention comprises an annular water turbine, a wind turbine and a semi-submersible platform. The wind turbine comprises a tower. The top of the tower is provided with wind turbine blades and a wind generator. The bottom of the tower is arranged at the central position of the semi-submersible platform through a truss. The annular water turbine is arranged inside the semi-submersible platform.

2. The power generation device of annular water turbine tidal current power generation and semi-submersible wind turbine according to claim 1 is characterized in that: The semi-submersible platform includes a plurality of pontoons, the interior of the pontoons is configured as a watertight compartment, the watertight compartment includes a generator compartment, a ballast water tank is arranged around the bottom of the generator compartment, a through hole is arranged at the bottom of the generator compartment, a watertight ring is arranged on the inner wall of the through hole, a sealing cover is arranged on the inner side of the through hole, the sealing cover is used to close the through hole, a generator is arranged vertically downward inside the generator compartment, and the transmission shaft of the generator is connected to the annular turbine.

3. The power generation device of annular water turbine tidal current power generation and semi-submersible wind turbine according to claim 2 is characterized in that: The annular turbine comprises blades and a hub, wherein the blades are arranged as a closed-loop blade structure, and the hub passes through the through hole and is connected to the transmission shaft via a coupling.

4. The power generation device of annular water turbine tidal current power generation and semi-submersible wind turbine according to claim 3 is characterized in that: A seawater pump is arranged inside the ballast water tank, and the seawater pump adjusts the water level in the ballast water tank.

5. The integrated power generation device integrating tidal current power generation and semi-submersible wind turbine according to claim 4 is characterized in that: The power generation of the annular turbine is calculated according to the following formula: In the above formula, W is the work done by the turbine, ρ is the air density, g is the acceleration due to gravity, and Q i is the unit water flow rate, v0 is the water inflow velocity, v i is the turbine wake velocity.

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