Fixed offshore wind power and wave energy coupling power generation system

Abstract

The invention relates to the technical field of offshore wind power generation, in particular to a fixed offshore wind power and wave energy coupling power generation system which comprises a supporting base body, a tower pipe, a wind turbine generator set, a cover plate and a fluid power generation device. The wind turbine generator is mounted on the tower pipe; the cover plate is fixed in the cavity of the supporting base body; a water through hole and an air through hole are formed in the side wall of the cavity, seawater enters the space below the cover plate through the water through hole, and an air chamber is formed between the internal liquid level and the cover plate; the fluid power generation device is installed on the cover plate and connected with a cable connected between the wind turbine generator set and the power grid. The ventilation opening is communicated with the air chamber through the fluid power generation device, when the external horizontal plane fluctuates along with waves, the space of the air chamber changes, air circulating between the air chamber and the ventilation opening flows through the fluid power generation device, and the fluid power generation device generates power. Therefore, wave power generation and wind power generation can be combined together, the structure is simple, and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore wind power generation, in particular to a fixed offshore wind power and wave energy coupling power generation system. BACKGROUND

[0002] Offshore wind power generation technology is a power generation technology, and is also the fastest developing green energy technology. While the construction of land wind power plants is rapidly developing, people have noticed some limitations of land wind energy utilization, such as large land occupation and noise pollution.

[0003] At present, offshore wind power has become an important lever to promote energy transformation development and achieve the double carbon goal. Therefore, a large number of offshore wind farms have been built in many regions. However, the huge energy contained in ocean waves has not been fully utilized, and therefore there is an urgent need to develop a device that can utilize both offshore wind energy and the energy contained in ocean waves. SUMMARY

[0004] The purpose of the present application is to provide a fixed offshore wind power and wave energy coupling power generation system, which solves the technical problem of the urgent need to develop a device that can utilize both offshore wind energy and the energy contained in ocean waves to some extent.

[0005] The present application provides a fixed offshore wind power and wave energy coupling power generation system, comprising: a support base, a tower pipe, a wind turbine generator, a cover plate and a fluid power generation device; wherein the tower pipe is installed on the support base; the wind turbine generator is installed on the tower pipe; the support base forms a cavity, and the cover plate is fixed in the cavity; the side wall of the cavity forms a water inlet and an air inlet, and seawater can enter the space below the cover plate through the water inlet to form an internal liquid surface, and an air chamber is formed between the internal liquid surface and the cover plate; The fluid power generation device is installed on the cover plate, and the fluid power generation device is connected to the cable connected between the wind turbine generator and the power grid; the air inlet is connected to the air chamber through the fluid power generation device, and when the sea level fluctuates, the space of the air chamber changes, so that the air flowing between the air chamber and the air inlet flows through the fluid power generation device, and the fluid power generation device generates electricity.

[0006] In the above technical solution, further, the cover plate separates the cavity into an upper cavity and a lower cavity along the vertical direction; the side wall of the upper cavity forms the air inlet connected to the upper space of the sea level; The side wall of the lower cavity is formed with the water passage which is connected with seawater outside the support base body, so that seawater can enter the lower cavity and form an internal liquid level in the lower cavity, and the internal liquid level and the cover plate form the air chamber along the vertical direction.

[0007] In any of the above technical solutions, further, the cover plate is formed with a mounting gap which penetrates along the vertical direction, and the fluid power generation device is fixed in the mounting gap.

[0008] In any of the above technical solutions, further, the cover plate comprises a horizontal annular cover plate and a vertical annular support plate; the outer ring of the horizontal annular cover plate is connected with the inner wall of the cavity; the vertical annular support plate is arranged in the inner annular hollow region of the horizontal annular cover plate and is connected with the inner ring of the horizontal annular cover plate; and the fluid power generation device is arranged in the inner annular hollow region of the vertical annular support plate and is connected with the inner ring of the vertical annular support plate.

[0009] In any of the above technical solutions, further, the mounting gap is formed in the central region of the cover plate, and the fluid power generation device is located in the central region of the cover plate.

[0010] In any of the above technical solutions, further, the lower surface of the cover plate close to the air chamber is located above the sea level outside the support base body.

[0011] In any of the above technical solutions, further, the water passage is located below the sea level.

[0012] In any of the above technical solutions, further, the cover plate and the support base body are connected by welding.

[0013] In any of the above technical solutions, further, the fluid power generation device and the cover plate are connected by welding.

[0014] In any of the above technical solutions, further, the entire outer side wall of the cover plate parallel to the thickness direction thereof abuts against and is connected with the entire circumferential inner wall of the cavity, so that the air flowing between the air chamber and the air passage can only flow through the fluid power generation device.

[0015] In any of the above technical solutions, further, the support base body is a tubular structure which is hollow inside and closed at both ends along the vertical direction.

[0016] In any of the above technical solutions, further, the fluid power generation device is a turbine generator.

[0017] Compared with the prior art, the application has the following beneficial effects: In the present application, only the water inlet and the air inlet are needed to be opened on the support base, and the cover plate is installed in the internal cavity of the support base, without major modification of the support base, so that the wave energy generation and the wind power generation can be combined together, the structure design is simple, and the development cost of the wind energy and the wave energy can be significantly reduced, that is, the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The structural schematic diagram of the fixed offshore wind power and wave energy coupling power generation system provided by the embodiments of the present application is shown in the figure. Figure 2 The local structural schematic diagram of the support base of the fixed offshore wind power and wave energy coupling power generation system provided by the embodiments of the present application before entering the seawater is shown in the figure. Figure 3 The local structural schematic diagram of the support base of the fixed offshore wind power and wave energy coupling power generation system provided by the embodiments of the present application after entering the seawater is shown in the figure.

[0020] Reference signs: 1-support base, 11-cavity, 111-upper cavity, 112-lower cavity, 12-water inlet, 13-air inlet, 2-tower pipe, 3-wind turbine generator, 4-cover plate, 41-horizontal annular cover plate, 42-vertical annular support plate, 43-installation gap, 5-fluid power generation device, 6-internal liquid level, 7-sea level, 8-air chamber. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described in detail below in combination with the drawings. Obviously, the described embodiments are some embodiments of the present application, not all embodiments.

[0022] The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0023] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The following refers to Figures 1 to 3 A fixed offshore wind power and wave energy coupling power generation system according to some embodiments of the present application is described.

[0027] Referring to Figures 1 to 3 The embodiments of the present application provide a fixed offshore wind power and wave energy coupling power generation system, which comprises a support base 1, a tower pipe 2, a wind turbine 3, a cover plate 4 and a fluid power generation device 5; wherein the tower pipe 2 is installed on the support base 1; the wind turbine 3 is installed on the tower pipe 2; the support base 1 is formed with a cavity 11, and the cover plate 4 is fixed in the cavity 11; the side wall of the cavity 11 is formed with a water inlet 12 and an air inlet 13, and seawater can enter the space below the cover plate 4 through the water inlet 12, and an internal liquid surface 6 is formed, and an air chamber 8 is formed between the internal liquid surface 6 and the cover plate 4; The fluid power generation device 5 is installed on the cover plate 4, and the fluid power generation device 5 is connected with the cable connected between the wind turbine 3 and the power grid, that is, the fluid power generation device 5 shares the cable with the wind turbine, and is connected with the booster station of the power grid; the air inlet 13 is communicated with the air chamber 8 through the fluid power generation device 5, when the sea level 7 fluctuates outside, the space of the air chamber 8 will change, so that the air flowing between the air chamber 8 and the air inlet 13 flows through the fluid power generation device 5, so that the fluid power generation device 5 generates electricity.

[0028] According to the structure described above, the working process of the fixed offshore wind power and wave energy coupling power generation system provided by the present application is as follows: When the horizontal plane outside the support base 1 fluctuates with the wave, the seawater outside the support base 1 can enter the cavity 11 of the support base 1 through the water passage 12, or the water inside the support base 1 flows out of the cavity 11 through the water passage 12, so that the height of the internal liquid surface 6 of the seawater inside the support base 1 rises or falls with the wave fluctuation.

[0029] When the internal liquid surface 6 falls with the wave fluctuation, the volume of the air chamber 8 increases, and the air is sucked into the support base 1 from the outside through the air passage 13; when the internal liquid surface 6 rises with the wave fluctuation, the volume of the air chamber 8 decreases, and the air in the air chamber 8 is pressed and discharged, and finally discharged to the outside of the support base 1 through the air passage 13. In the above-mentioned air suction and air discharge process, the air flows through the fluid power generation device 5, thereby driving the fluid power generation device 5 to generate electricity, and the generated electricity can be transmitted to the step-up station of the power grid together with the electricity generated by the wind turbine 3 through the same cable.

[0030] It can be seen that in the present application, only the water passage 12 and the air passage 13 need to be opened on the existing support base 1, and the cover plate 4 needs to be installed in the internal cavity 11 of the support base 1, without major modification of the support base 1, so that the wave energy generation and wind power generation can be combined together, the structure design is simple, and the development cost of wind energy and wave energy can be significantly reduced, that is, the cost is low.

[0031] Further, preferably, the fluid power generation device 5 is a turbine generator which can generate electricity by using flowing gas, and belongs to existing equipment, which will not be described in detail here. Of course, the fluid power generation device 5 is not limited to this, but can also be other types of fluid power generation device 5, etc.

[0032] It should be noted that the cost of the existing offshore wind power equipment support foundation, that is, the support base 1, can account for more than 20% of the total cost, but the support foundation has no other use except supporting the upper wind turbine 3. In the present application, only minor modifications are made on the existing support foundation, that is, the air passage 13 and the water passage 12 are processed, and the internal fluid power generation device 5 is installed, so that the wave energy can be utilized, and the electricity generated by the wind turbine 3 can be transmitted to the power grid together, so that the wind energy and wave energy can be utilized at the same time.

[0033] In this embodiment, preferably, as shown in Figure 2 and Figure 3 , the cover plate 4 separates the cavity 11 into an upper cavity 111 and a lower cavity 112 along the vertical direction; the side wall of the upper cavity 111 is formed with the air passage 13 which is communicated with the upper space of the sea level 7; The side wall of the lower cavity 112 is formed with a water inlet 12 which is connected with seawater outside the support base 1, so that seawater can enter the lower cavity 112 and form an internal liquid level 6 in the lower cavity 112, and an air chamber 8 is formed between the internal liquid level 6 and the cover plate 4 along the vertical direction. According to the above-described structure, the cover plate 4 divides the cavity into the upper cavity 111 and the lower cavity 112, so that seawater can enter the lower cavity 112 and form the air chamber 8 in the lower cavity 112, the upper cavity 111 can be connected with air on the sea level 7, and the air chamber 8 and the upper cavity 111 are connected through the fluid power generation device 5 between the upper cavity 111 and the lower cavity 112, so that the whole structure is reliable, the cavity is clear, and the water inlet and outlet and the air inlet and outlet do not interfere with each other, so that the whole system can work continuously.

[0034] In this embodiment, preferably, as shown in Figure 2 and Figure 3 , the cover plate 4 is formed with a mounting gap 43 which penetrates along the vertical direction, and the fluid power generation device 5 is fixed in the mounting gap 43. According to the above-described structure, the fluid power generation device 5 is installed in the mounting gap 43, so that the fluid power generation device 5 is more firmly and stably assembled with the cover plate 4, and does not affect the air flow between the air chamber 8 below the cover plate 4 and the outside. In this embodiment, preferably, as shown in Figure 3 , the cover plate 4 comprises a horizontal annular cover plate 41 and a vertical annular support plate 42; the outer ring of the horizontal annular cover plate 41 is connected with the inner wall of the cavity 11; the vertical annular support plate 42 is arranged in the inner annular hollow region of the horizontal annular cover plate 41 and is connected with the inner ring of the horizontal annular cover plate 41; the fluid power generation device 5 is arranged in the inner annular hollow region of the vertical annular support plate 42 and is connected with the inner ring of the vertical annular support plate 42, and it should be noted that the inner annular hollow region of the vertical annular support plate 42 is the aforementioned mounting gap 43. According to the above-described structure, the horizontal annular cover plate 41 is connected with the inner wall of the cavity 11, and the vertical annular support plate 42 supports the fluid power generation device 5. Further, preferably, the horizontal annular cover plate 41 and the vertical annular support plate 42 are an integral structure, that is, the cover plate 4 is an integral structure, has high overall strength and is not easy to be damaged, and is convenient to form without subsequent processing. Of course, it is not limited to this, and the horizontal annular cover plate 41 and the vertical annular support plate 42 can also be a split structure and are connected through welding or the like.

[0035] In this embodiment, preferably, as shown in Figure 2 and Figure 3As shown, the installation gap 43 is formed in the central region of the cover plate 4, and the fluid power generation device 5 is located in the central region of the cover plate 4. According to the above-described structure, the fluid power generation device 5 is installed in the central region of the cover plate 4, so that the fluid power generation device 5 is more stable, and air can flow through the fluid power generation device 5 uniformly. Of course, it is not limited to this, and the fluid power generation device 5 can also be installed at a position deviating from the center of the cover plate 4, which is selected according to actual needs. In this embodiment, preferably, as shown in Figure 3 As shown, the lower surface of the cover plate 4 near the air chamber 8 is located above the sea level 7 outside the support base 1, that is, the lower surface of the cover plate 4 is higher than the sea level 7. According to the above-described structure, since the internal liquid level 6 is the same as the external liquid level, if the lower surface of the cover plate 4 is higher than the external liquid level, that is, the sea level 7, it is equivalent to that the lower surface of the cover plate 4 is higher than the internal liquid level 6, so that the air chamber 8 can be formed between the lower surface of the cover plate 4 and the internal liquid level 6.

[0036] In this embodiment, preferably, as shown in Figure 3 As shown, the water passage 12 is located below the sea level 7, so that only seawater can quickly enter the lower cavity 112 below the cover plate 4 through the water passage 12, and the internal liquid level 6 and the external liquid level can change synchronously, which can effectively avoid the external air and seawater entering the lower cavity 112 together, thereby affecting the change of the air chamber 8. Of course, it is not limited to this, and the water passage 12 can also be opened at the same level as the sea level 7, that is, seawater and air can also enter the air chamber 8 through the water passage 12 at the same time, which is selected according to actual needs. In this embodiment, preferably, as shown in Figure 2 and Figure 3 As shown, the cover plate 4 and the support base 1 are connected by welding. According to the above-described structure, the cover plate 4 and the support base 1 are connected by welding, which is more reliable and not easy to damage, and is simple and convenient to operate. Of course, it is not limited to this, and the cover plate 4 and the support base 1 can also be connected by other connection methods such as bolts, buckles or adhesion, which is selected according to actual needs. In this embodiment, preferably, as shown in Figure 2 and Figure 3 As shown, the fluid power generation device 5 and the cover plate 4 are connected by welding, which is more reliable and not easy to damage, and is simple and convenient to operate. Of course, it is not limited to this, and the cover plate 4 and the support base 1 can also be connected by other connection methods such as bolts, buckles or adhesion, which is selected according to actual needs.

[0037] In this embodiment, preferably, as shown in Figure 2 and Figure 3 The support base 1 is a tubular structure with a hollow interior and closed at both ends in the vertical direction. According to the above-described structure, the bottom of the support base 1 is designed to be closed, thereby increasing the contact area with the seabed, and improving the firmness and stability of the support base 1 with the seabed. The top of the support base 1 is designed to be closed, thereby effectively supporting the tower pipe 2.

[0038] Of course, the top and / or bottom of the support base 1 can also be designed to be open, depending on actual needs.

[0039] In this embodiment, preferably, as shown in Figure 2 and Figure 3 The entire outer side wall of the cover plate 4 parallel to the thickness direction abuts and is connected together with the entire circumferential inner wall of the cavity 11, that is, the cover plate 4 is adapted to the cavity 11, so that the air flowing between the air chamber 8 and the air vent 13 can only flow through the fluid power generation device 5, which can improve the power generation capacity and avoid gaps between the side wall of the cover plate 4 and the side wall of the cavity 11, so that the gas flows through the gaps rather than through the fluid power generation device 5. Of course, it is not limited to this. Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fixed offshore wind power and wave energy coupling power generation system [XULAI 1], characterized in that, The utility model relates to a fluid power generation device and a wind turbine generator system, and relates to a support base, a tower pipe, a wind turbine generator, a cover plate and a fluid power generation device; wherein the tower pipe is installed on the support base; the wind turbine generator is installed on the tower pipe; the support base is formed with a cavity; the cover plate is fixed in the cavity; the side wall of the cavity is formed with a water inlet and an air inlet; seawater can enter the space below the cover plate through the water inlet and form an internal liquid level; an air chamber is formed between the internal liquid level and the cover plate; the fluid power generation device is installed on the cover plate and connected to the wind turbine generator and the cable connected to the power grid; the air inlet is connected to the air chamber through the fluid power generation device; when the sea level fluctuates, the space of the air chamber changes, so that the air flowing between the air chamber and the air inlet flows through the fluid power generation device, and the fluid power generation device generates electricity. The cover plate divides the cavity into an upper cavity and a lower cavity along the vertical direction; the side wall of the upper cavity is formed with the air inlet connected to the space above the sea level; the side wall of the lower cavity is formed with the water inlet connected to the seawater outside the support base, so that seawater can enter the lower cavity and form an internal liquid level in the lower cavity; the air chamber is formed between the internal liquid level and the cover plate along the vertical direction. The cover plate is formed with an installation gap penetrating along the vertical direction, and the fluid power generation device is fixed in the installation gap. The cover plate comprises a horizontal annular cover plate and a vertical annular support plate; the outer ring of the horizontal annular cover plate is connected to the inner wall of the cavity; the vertical annular support plate is arranged in the inner ring hollow area of the horizontal annular cover plate and connected to the inner ring of the horizontal annular cover plate; the fluid power generation device is arranged in the inner ring hollow area of the vertical annular support plate and connected to the inner ring of the vertical annular support plate.

2. The fixed offshore wind and wave energy coupling power generation system according to claim 1, characterized in that, The installation gap is formed in the central region of the cover plate, and the fluid power generation device is located in the central region of the cover plate. The lower surface of the cover plate close to the air chamber is located above the sea level outside the support base.

3. The fixed offshore wind and wave energy coupling power generation system according to claim 1, characterized in that, The water inlet is located below the sea level.

4. The fixed offshore wind and wave energy coupling power generation system according to claim 3, characterized in that, The cover plate and the support base are connected by welding.

5. The fixed offshore wind and wave energy coupling power generation system according to claim 3, characterized in that, The fluid power generation device and the cover plate are connected by welding.

6. The fixed offshore wind and wave energy coupling power generation system according to claim 1, characterized in that, The entire outer side wall of the cover plate parallel to the thickness direction abuts against and is connected to the entire circumferential inner wall of the cavity, so that the air flowing between the air chamber and the air inlet can only flow through the fluid power generation device; and / or 7. The fixed offshore wind and wave energy coupling power generation system according to claim 1, characterized in that, The support base is a tubular structure with an internal hollow and closed at both ends along the vertical direction; and / or 8. The fixed offshore wind and wave energy coupling power generation system according to claim 1, characterized in that, The fluid power generation device is a turbine generator.

9. The fixed offshore wind and wave energy coupling power generation system according to claim 1, characterized in that, ​ 10. The fixed offshore wind and wave energy coupling power generation system according to any one of claims 1 to 9, characterized in that, ​ ​ ​

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