Rear bent pipe type wave-wind combined power generation device

Abstract

The invention discloses a rear bent pipe type wave-wind combined power generation device which comprises a semi-submersible structure platform and an anchoring system installed at the bottom of the semi-submersible structure platform, a wind power generation system is installed at the top of the semi-submersible structure platform, and a rear bent pipe wave energy power generation system is arranged in the semi-submersible structure platform. The rear bent pipe wave energy power generation system comprises a transversely-arranged main shaft, an L-shaped channel installed on the lower portion of the main shaft and a buoyancy cabin installed on the upper portion of the main shaft, the L-shaped channel is divided into a horizontal section and a vertical section, the horizontal section is provided with an opening in one side, a runner chamber is arranged on one side of the vertical section, a symmetrical wing turbine is arranged at an outlet of the runner chamber, and a base is arranged at the upper end of the buoyancy cabin. The permanent magnet generator is mounted on the base, and the axis of the permanent magnet generator is connected with the symmetric wing turbine. The device has the beneficial effects that the wave power generation system and the wind power generation system share the foundation platform, the anchoring system and the sea area, and the economic benefit of the offshore renewable energy device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of offshore renewable energy, and in particular to a backward bent-tube wave-wind combined power generation device. Background Art

[0002] The ocean occupies 70% of the earth's surface and contains rich offshore renewable energy, such as offshore wind energy, wave energy, tidal energy, current energy, temperature difference energy and salinity difference energy. Vigorously developing offshore renewable energy is of great significance to solving many problems caused by the use of fossil energy.

[0003] At present, offshore floating wind energy is becoming more and more mature, and a large number of demonstration applications have been carried out. However, in order for floating offshore wind power generation and wave power generation devices to operate safely and reliably in the sea, they need a relatively stable foundation platform and a powerful mooring system, which leads to a high cost of generating electricity from a single energy source of renewable energy at sea. Summary of the invention

[0004] In view of the above problems, the present invention proposes a backward-bent-tube wave-wind combined power generation device, which aims to integrate two offshore renewable energy power generation systems onto an offshore basic platform, realize the sharing of the basic platform, mooring system, power transmission system and sea area, thereby improving the economic benefits of offshore renewable energy utilization.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] A backward-bent-tube wave-wind combined power generation device comprises: a semi-submersible structure platform, and an anchoring system installed at the bottom of the semi-submersible structure platform, a wind power generation system is installed on the top of the semi-submersible structure platform, and a backward-bent-tube wave energy power generation system is arranged in the semi-submersible structure platform, wherein the backward-bent-tube wave energy power generation system comprises a transverse main shaft, an L-shaped channel installed at the lower part of the main shaft, and a buoyancy tank installed at the upper part of the main shaft, wherein the L-shaped channel is divided into a horizontal section and a vertical section, wherein the horizontal section is opened on one side, a runner chamber is arranged on one side of the vertical section, a symmetrical wing turbine is arranged at the outlet of the runner chamber, a base is arranged at the upper end of the buoyancy tank, and a permanent magnet generator installed on the base, and the axis of the permanent magnet generator is connected to the symmetrical wing turbine.

[0007] In some embodiments, the semi-submersible structure platform includes an underwater damping flat plate cabin, an intermediate column cabin installed at the top center of the underwater damping flat plate cabin, and circular column cabins evenly distributed around the top of the underwater damping flat plate cabin, and the bottom of the circular column cabin is connected to the intermediate column cabin via a diagonal bracing truss.

[0008] In some embodiments, an upper side of each of the circular column cabins is connected to an upper side of the middle column cabin via a transverse top cabin.

[0009] In some embodiments, the underwater damping flat plate cabin is in the shape of an equilateral triangle, and each of the circular column cabins is respectively distributed on a vertex of the underwater damping flat plate cabin.

[0010] In some embodiments, the main shaft is fixedly installed between two of the circular column cabins.

[0011] In some embodiments, at least one set of the back-bent pipe wave energy power generation system is installed on each of the main shafts.

[0012] In some embodiments, the axis of the main shaft is located below the waterline.

[0013] In some embodiments, the vertical section is arranged on a side of the horizontal section facing the incoming wave direction of the target sea area.

[0014] In some embodiments, the wind power generation system includes a wind turbine tower installed on the top of the intermediate column cabin, a wind turbine generator installed on the top of the wind turbine tower, and wind turbine blades connected to the axis of the wind turbine generator.

[0015] In some embodiments, the mooring system includes a mooring chain installed at a vertex of a bottom surface of the underwater damping flat plate chamber, and a gravity anchor block connected to the mooring chain.

[0016] The beneficial effects of the present invention are as follows: by integrating the rear-bend pipe wave energy power generation system and the wind power generation system on the same semi-submersible structure platform, the two systems share the basic platform, anchorage and sea area, thereby improving the economic benefits of offshore renewable energy devices. Among them, the rear-bend pipe wave energy power generation system is an oscillating water column power generation system with good reliability, simple structure, and high power generation efficiency, and is easy to be arranged in an array on the entire submersible structure platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of a rear-bent-tube wave-wind combined power generation device disclosed in an embodiment of the present invention;

[0018] Figure 2 It is a top view of a rear-bent-tube wave-wind combined power generation device disclosed in an embodiment of the present invention;

[0019] Figure 3 is a front view of the mooring system disclosed in an embodiment of the present invention;

[0020] Figure 4 is a top view of the mooring system disclosed in an embodiment of the present invention;

[0021] Figure 5 It is a front view of a single rear bent pipe wave energy power generation system disclosed in an embodiment of the present invention;

[0022] Figure 6 This is a working state diagram of a single rear bent tube wave energy power generation system disclosed in an embodiment of the present invention when the bow is at a wave trough;

[0023] Figure 7 This is a working state diagram of a single rear bent pipe wave energy power generation system disclosed in an embodiment of the present invention when the bow is at the wave crest;

[0024] Among them: 1- wind turbine blades; 2- wind turbine tower; 3- top cabin; 4- rear bent pipe wave energy power generation system; 5- circular column cabin; 6- underwater damping flat plate cabin; 7- diagonal brace truss; 8- main shaft; 9- mooring anchor chain; 10- gravity anchor block; 11- middle column cabin; 12- wind turbine; 4.1- L-shaped channel; 4.2- buoyancy cabin; 4.3- permanent magnet generator; 4.4- symmetrical wing turbine; 4.5- runner room; 4.6- base. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the content of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all the contents.

[0026] This embodiment proposes a backward curved tube wave-wind combined power generation device, such as Figure 1-5 As shown, it includes: a semi-submersible structure platform, and an anchoring system installed at the bottom of the semi-submersible structure platform, a wind power generation system is installed on the top of the semi-submersible structure platform, and a rear-bend pipe wave energy power generation system 4 is arranged in the semi-submersible structure platform, wherein the rear-bend pipe wave energy power generation system 4 includes a horizontal main shaft 8, an L-shaped channel 4.1 installed at the lower part of the main shaft 8, and a buoyancy tank 4.2 installed at the upper part of the main shaft 8, the L-shaped channel 4.1 is divided into a horizontal section and a vertical section, the horizontal section is open on one side, a runner chamber 4.5 is arranged on one side of the vertical section, a symmetrical wing turbine 4.4 is arranged at the outlet of the runner chamber 4.5, a base 4.6 is arranged at the upper end of the buoyancy tank 4.2, and a permanent magnet generator 4.3 installed on the base 4.6, and the axis of the permanent magnet generator 4.3 is connected to the symmetrical wing turbine 4.4.

[0027] Specifically, the buoyancy chamber 4.2 is used to provide buoyancy for the L-shaped channel 4.1. Due to the entry of seawater into the L-shaped channel 4.1, a water column is formed. Above the water column is an air chamber. The left side of the air chamber is connected to the runner chamber 4.5. A symmetrical wing turbine 4.4 and a permanent magnet generator 4.3 are installed at the outlet of the runner chamber 4.5. Regardless of compressed air discharge or air intake, the symmetrical wing turbine 4.4 is pushed to rotate in the same direction. In addition, the axis of the main shaft 8 is located below the waterline, and the vertical section is arranged on the side of the horizontal section facing the direction of the incoming waves in the target sea area. When driven by waves and the trough reaches the bow of the rear curved tube wave energy power generation system 4, the bow of the entire rear curved tube wave energy power generation system 4 is in a sinking state, and the tail is in an upturned state, such as Figure 6 As shown, at this time, seawater will be poured into the L-shaped channel 4.1, and the water column level inside the L-shaped channel 4.1 will rise, thereby compressing the air at the top, and the compressed air will drive the symmetrical wing turbine 4.4 to rotate, thereby driving the permanent magnet generator 4.3 to rotate and generate electricity. When driven by waves, the wave crest reaches the bow of the rear curved tube wave energy power generation system 4. At this time, the bow of the entire rear curved tube wave energy power generation system 4 is in an upward state, and the tail is in a sinking state, as shown in FIG. Figure 7 As shown, at this time, seawater will flow out of the L-shaped channel 4.1, and the water column level inside the L-shaped channel 4.1 will drop. At this time, air will be sucked in from the gap of the impeller of the symmetrical wing turbine 4.4, and drive the symmetrical wing turbine 4.4 to rotate, thereby driving the permanent magnet generator 4.3 to rotate and generate electricity.

[0028] In this embodiment, by integrating the rear-bend pipe wave energy power generation system 4 and the wind power generation system on the same semi-submersible structure platform, the two systems share the basic platform, anchorage and sea area, thereby improving the economic benefits of offshore renewable energy devices. Among them, the rear-bend pipe wave energy power generation system 4 is an oscillating water column power generation system with good reliability, simple structure, and high power generation efficiency, and is easy to be arranged in an array on the entire submersible structure platform.

[0029] In one example, the above-mentioned semi-submersible structure platform includes an underwater damping flat-plate cabin 6, an intermediate column cabin 11 installed at the top center of the underwater damping flat-plate cabin 6, and circular column cabins 5 evenly distributed around the top of the underwater damping flat-plate cabin 6. The bottom of the circular column cabin 5 is connected to the intermediate column cabin 11 via a diagonal bracing truss 7. The diagonal bracing truss 7 is used to improve the structural strength and stability of the semi-submersible structure platform. In the above example, considering that the semi-submersible structure platform needs to carry a wind power generation system, the center of gravity of the entire device is relatively high, which may cause the shaking angle of the entire device to be too large, which is not conducive to the operation of the wind power generation system. Therefore, an underwater damping flat-plate cabin 6 is set, and the underwater damping flat-plate cabin 6 can provide huge heave and sway damping for the entire semi-submersible structure, thereby increasing the stability of the entire semi-submersible structure platform under waves and improving the working efficiency and safety of the wind power generation system under large waves. In addition, the underwater damping flat-plate cabin 6 also serves as a ballast tank to adjust the ballast draft of the entire device. When the ballast water in the underwater damping flat-plate cabin 6 is drained, the entire device is in a completely floating state. At this time, the entire device is in a towing state, which is convenient for the device to be transferred and operated. The lower layer of the circular column cabin 5 is used as a ballast tank, and the upper layer is used as an empty tank, which can adjust the overall draft of the device to reach a working state.

[0030] Optionally, one side of the upper portion of each circular column cabin 5 is connected to one side of the upper portion of the middle column cabin 11 via a transverse top cabin 3, and the top cabin 3 is used to install various electrical and monitoring equipment, etc.

[0031] Optionally, the underwater damping flat plate cabin 6 is in the shape of an equilateral triangle, and each circular column cabin 5 is respectively distributed on the vertex of the underwater damping flat plate cabin 6. This design makes the position of the device relatively stable in the sea, and the range of displacement under large waves can be controlled within a certain distance.

[0032] Preferably, the main shaft 8 is fixedly installed between the two circular column cabins 5, and at least one set of rear-bend pipe wave energy power generation systems 4 is installed on each main shaft 8. In this solution, the rear-bend pipe wave energy power generation systems 4 can be flexibly arranged on one side, two sides or three sides according to the direction of the incoming waves, so as to efficiently absorb the wave energy in the main direction of the incoming waves.

[0033] Optionally, the wind power generation system includes a wind turbine tower 2 installed on the top of the middle column cabin 11 , a wind turbine generator 12 installed on the top of the wind turbine tower 2 , and a wind turbine blade 1 connected to the axis of the wind turbine generator 12 .

[0034] Optionally, the mooring system includes a mooring chain 9 installed at the apex of the bottom surface of the underwater damping flat plate cabin 6 , and a gravity anchor block 10 connected to the mooring chain 9 .

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made based on the essence of the content of the present invention should be included in the protection scope of the present invention.

Claims

1. A backward curved tube wave-wind combined power generation device, characterized in that: include: A semi-submersible structure platform, and an anchoring system installed at the bottom of the semi-submersible structure platform, a wind power generation system is installed on the top of the semi-submersible structure platform, and a rear-bend pipe wave energy power generation system is arranged in the semi-submersible structure platform, wherein the rear-bend pipe wave energy power generation system comprises a transverse main shaft, an L-shaped channel installed at the lower part of the main shaft, and a buoyancy tank installed at the upper part of the main shaft, the L-shaped channel is divided into a horizontal section and a vertical section, the horizontal section is open on one side, a runner chamber is arranged on one side of the vertical section, a symmetrical wing turbine is arranged at the outlet of the runner chamber, a base is arranged at the upper end of the buoyancy tank, and a permanent magnet generator installed on the base, and the axis of the permanent magnet generator is connected to the symmetrical wing turbine.

2. The backward curved tube wave-wind combined power generation device according to claim 1, characterized in that: The semi-submersible structure platform includes an underwater damping flat plate cabin, an intermediate column cabin installed at the top center of the underwater damping flat plate cabin, and circular column cabins evenly distributed around the top of the underwater damping flat plate cabin, and the bottom of the circular column cabin is connected to the intermediate column cabin via a diagonal bracing truss.

3. The backward curved tube wave-wind combined power generation device according to claim 2, characterized in that: One side of the upper part of each circular column cabin is connected to one side of the upper part of the middle column cabin through a transverse top cabin.

4. The backward curved tube wave-wind combined power generation device according to claim 2, characterized in that: The underwater damping flat panel cabin is in the shape of an equilateral triangle, and each of the circular column cabins is respectively distributed on the vertices of the underwater damping flat panel cabin.

5. The backward curved tube wave-wind combined power generation device according to claim 2, characterized in that: The main shaft is fixedly installed between the two circular column cabins.

6. The backward curved tube wave-wind combined power generation device according to any one of claims 1 to 5, characterized in that: At least one set of the rear bent pipe wave energy power generation system is installed on each main shaft.

7. The backward curved tube wave-wind combined power generation device according to any one of claims 1 to 5, characterized in that: The axis of the main shaft is located below the waterline.

8. The backward curved tube wave-wind combined power generation device according to claim 1, characterized in that: The vertical section is arranged on a side of the horizontal section facing the incoming wave direction of the target sea area.

9. The backward curved tube wave-wind combined power generation device according to claim 2, characterized in that: The wind power generation system comprises a wind turbine tower installed on the top of the middle column cabin, a wind turbine generator installed on the top of the wind turbine tower, and wind turbine blades connected to the axis of the wind turbine generator.

10. The backward curved tube wave-wind combined power generation device according to claim 2, characterized in that: The mooring system comprises a mooring anchor chain installed at the bottom apex of the underwater damping flat plate cabin, and a gravity anchor block connected to the mooring anchor chain.

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