Efficient energy harvesting raft type wave energy power generation device and working method

Abstract

According to the raft type wave energy power generation device capable of efficiently capturing energy, the hydraulic power generation device is transversely arranged between the two adjacent raft bodies, when the raft type wave energy power generation device is impacted by sea waves, the two adjacent raft bodies generate relative displacement and rotation, and the transverse hydraulic power generation device and the oblique hydraulic power generation device are driven to generate power; the incoming flow correction system is arranged at the center of the bottom of the raft body, and the plane hinge is obliquely connected with the connecting rod through the hydraulic power generation device; the connecting rods are vertically arranged at the lower positions between every two adjacent raft bodies, one ends of the connecting rods are connected through spherical hinges, the other ends of the connecting rods are provided with hydraulic power generation devices, and when wave crests move to the positions where the raft type wave energy power generation devices are located, the raft type wave energy power generation devices integrally move upwards to drive the vertical hydraulic power generation devices to generate power; the incoming flow correction system is utilized to ensure that the direction is consistent with the ocean current flowing direction, the wave energy capturing capacity of the device is improved, and the power generation efficiency is further improved.

Description

Technical Field

[0001] The invention belongs to the field of marine renewable energy utilization, and specifically relates to a highly efficient energy-harvesting raft-type wave energy power generation device and a working method. Background Art

[0002] Wave energy refers to the sum of kinetic energy and potential energy possessed by waves on the ocean surface. The energy of waves is proportional to the square of the wave height, the wave movement period, and the width of the wavefront. Wave energy is a specific form of ocean energy and one of the most important energy sources in ocean energy. It is rich in reserves and accounts for more than 90% of the entire ocean energy. However, wave energy is also the most unstable energy in ocean energy. Its size is affected by many factors such as wind speed, wind direction, continuous blowing time, and flow rate. As a typical clean energy, wave energy has great development potential. Wave energy is essentially formed by seawater absorbing wind energy. When the wind passes over the sea surface, the sea surface is turbulent due to the friction of the air and the atmospheric pressure, forming waves. The energy transfer rate of waves is related to the wind speed and the distance between wind and water (i.e., the wind zone). When the water mass is displaced relative to the sea level, the wave has potential energy; and the movement of the water mass gives the wave kinetic energy. Wave energy has broad application prospects, among which power generation is the main field of wave energy application. There are many different wave energy generation technologies, which can be divided into three categories according to the intermediate energy conversion link: mechanical, pneumatic and hydraulic. These technologies can convert wave energy into electrical energy to meet the needs of homes, factories or cities. In addition, wave energy can also be used in seawater desalination, marine environmental protection, marine transportation and other fields.

[0003] According to statistics, the global economically valuable wave energy exploitation is estimated to be 100 to 1 billion kW. If wave energy can be reasonably developed and utilized, it will be of great significance to achieve sustainable energy development and promote marine economic construction. In the process of wave energy power generation, it is usually necessary to absorb wave energy through a wave energy power generation device, then convert the wave energy into stable output mechanical energy through a transmission mechanism, and finally use a power generation device to convert mechanical energy into electrical energy; At present, wave energy power generation devices have been promoted and applied in small facilities such as navigation light buoys, light poles, and lighthouses. In the future, with the continuous advancement of technology and further reduction of costs, wave energy power generation devices are expected to be applied on a larger scale, providing sufficient energy support for remote islands and marine ranches.

[0004] Among them, the raft wave energy power generation device captures wave energy through a number of raft-like floating bodies floating on the water surface. The raft wave energy power generation device is usually hingedly connected by a plurality of raft wave panels. Under the impact of waves, the wave panels produce relative movement to drive the hydraulic device to displace, thereby converting wave energy into mechanical energy, thereby further generating electricity. The raft wave energy power generation device is usually hingedly connected by a plurality of raft wave panels. Under the impact of waves, the wave panels produce relative movement to drive the hydraulic device to displace, thereby converting wave energy into mechanical energy, thereby further generating electricity. The raft wave energy power generation device has the characteristics of large energy absorption, high power generation efficiency, and strong survivability; However, since the wave-facing surface of the raft-type wave energy power generation device is small, its ability to absorb wave energy is relatively weak, resulting in low power generation efficiency in sea areas with relatively rich wave energy resources. There is a certain amount of energy loss in the energy conversion process, resulting in low power generation efficiency of the device and inability to fully utilize wave energy resources. Summary of the invention

[0005] In response to the problems existing in the prior art, the present invention proposes a raft-type wave energy power generation device with high efficiency in energy capture, which simultaneously absorbs the energy generated by the up and down and rotational movement of the wave energy power generation device, and utilizes the incoming current correction system to ensure that it is consistent with the flow direction of the ocean current, thereby improving the device's ability to capture wave energy and further improving power generation efficiency.

[0006] The present invention is achieved through the following technical solutions: A raft-type wave energy power generation device with high efficiency energy capture, comprising: Raft and current correction system; Fixing devices are installed on both sides of the raft body, and the adjacent raft bodies are connected to the hydraulic power generation device through the fixing devices on both sides; the adjacent raft bodies are hinged transversely by ball hinges, and the hydraulic power generation device is arranged transversely between the adjacent raft bodies; The incoming flow correction system is arranged at the center of the bottom of the raft body and connected by a plane hinge, and the plane hinge is connected to the connecting rod obliquely through a hydraulic power generation device; The connecting rod is vertically arranged at a lower position between two adjacent raft bodies, and one end of the connecting rod is connected by a spherical hinge, and the other end is provided with a hydraulic power generation device, and the end of the hydraulic power generation device is connected to the mooring cable. Preferably, the hydraulic power generation device comprises a first hydraulic power generation device, a second hydraulic power generation device, a third hydraulic power generation device, a fourth hydraulic power generation device and a seventh hydraulic power generation device; The first hydraulic power generation device and the fourth hydraulic power generation device are arranged transversely between two adjacent raft bodies; The second hydraulic power generation device and the third hydraulic power generation device are symmetrically arranged at the bottom of the raft body, and one end is connected to the plane hinge of the bottom of the raft body, and the other end is connected to the connecting rod through the plane hinge; One end of the seventh hydraulic power generation device is connected to the connecting rod, and the other end is connected to the mooring cable.

[0007] Preferably, the incoming flow correction system includes a casing, a rotating shaft and an impeller, the casing is connected to the joint of the planar hinge through a connecting rod, the rotating shaft and the impeller are arranged inside the casing, one end of the rotating shaft is connected to the impeller, and the other end of the rotating shaft is connected to the connecting rod.

[0008] Preferably, the hydraulic power generation device comprises a piston, a hydraulic cylinder, a gas turbine and a generator; When the raft-type wave energy power generation device is hit by waves, the two adjacent raft sections undergo relative displacement and rotation, driving the piston to move, compressing the gas in the hydraulic cylinder, driving the gas turbine to rotate, and thus driving the generator to generate electricity.

[0009] Preferably, the fixing device is fixedly connected to the raft body and the spherical hinge by welding.

[0010] Preferably, the raft bodies are arranged in an array.

[0011] Preferably, the raft body is a cylindrical hollow float.

[0012] Preferably, the ends of the mooring lines are fixed to the seabed.

[0013] Preferably, the spherical hinge can rotate in any direction, and the planar hinge can only rotate within the plane where the long side of the raft body is located.

[0014] A working method of a raft-type wave energy power generation device with high efficiency energy capture, comprising: When the raft wave energy power generation device is impacted by waves, two adjacent raft sections undergo relative displacement and rotation, driving the lateral and oblique hydraulic power generation devices to generate electricity; When the wave crest moves to the location of the raft wave energy power generation device, the raft wave energy power generation device moves upward as a whole, driving the vertical hydraulic power generation device to generate electricity; The current correction system under each section of the raft is impacted by the waves. When the arrangement direction of the raft-type wave energy power generation device is at an angle to the wave current direction, the current correction system is subjected to an impact force in an oblique direction at a certain angle to the axial direction, generating a torque to drive the raft to rotate until the current correction system is parallel to the current direction and the torque disappears, thereby adjusting the arrangement direction of the raft-type wave energy power generation device to be parallel to the current direction.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention provides a raft-type wave energy power generation device with high efficiency in energy capture, wherein a hydraulic power generation device is transversely arranged between two adjacent raft bodies; when the raft-type wave energy power generation device is impacted by sea waves, two adjacent raft bodies undergo relative displacement and rotation, driving the transverse and oblique hydraulic power generation devices to generate electricity; an incoming current correction system is arranged at the center of the bottom of the raft body, and is connected by a plane hinge, and the plane hinge is obliquely connected to a connecting rod through a hydraulic power generation device; a connecting rod is vertically arranged at a lower position between two adjacent raft bodies, and one end is connected by a spherical hinge, and a hydraulic power generation device is arranged at the other end, and the hydraulic power generation device The end of the device is connected to the mooring cable. When the wave crest moves to the location of the raft wave energy power generation device, the raft wave energy power generation device moves upward as a whole, driving the vertical hydraulic power generation device to generate electricity; the current correction system under each raft body is impacted by the waves. When the arrangement direction of the raft wave energy power generation device is at an angle with the wave current direction, the current correction system is impacted by the oblique direction with a certain angle to the axial direction, generating a torque to drive the raft body to rotate until the current correction system is parallel to the current direction and the torque disappears, thereby adjusting the arrangement direction of the raft wave energy power generation device to be parallel to the current direction. The present invention uses the current correction system to adjust the arrangement direction of the raft wave energy power generation device in real time. When the ocean current direction is at an angle with the arrangement direction of the device, the force of the ocean current on the impeller in the current correction system generates a torque on the entire device, prompting the power generation device to rotate to a direction parallel to the ocean current. The raft wave energy utilization device in the present invention has the ability to automatically adapt to the current direction, and the ability of the wave energy power generation device to capture wave energy is improved.

[0016] Furthermore, the raft-type wave energy utilization device in the present invention has a hydraulic power generation system in the vertical and swinging directions. Under the impact of waves, the device can capture the wave energy absorbed by the vertical and swinging movements to a great extent, improve the energy capture efficiency, and further enhance the power generation capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the raft type wave energy power generation device of the present invention; Figure 2 It is a side view of a raft type wave energy power generation device; Figure 3 is a top view of a raft type wave energy power generation device; Figure 4 It is an enlarged schematic diagram of the hydraulic power generation device; Figure 5 This is a schematic diagram of the incoming flow positioning system; In the figure: a first raft body 1, a second raft body 2, a first hydraulic generator 3, a second hydraulic generator 4, a third hydraulic generator 5, a fourth hydraulic generator 6, a fifth hydraulic generator 7, a sixth hydraulic generator 8, a seventh hydraulic generator 9, a ball hinge 10, a first plane hinge 11, a second plane hinge 12, a third plane hinge 14, an impeller 13, a fourth plane hinge 15, an incoming flow correction system 16, a first fixing device 17, a second fixing device 18, a third fixing device 19, a fourth fixing device 20, a fifth fixing device 21, a sixth fixing device 22, a seventh fixing device 23 and an eighth fixing device 24, a connecting rod 25, a mooring rope 26, a rotating shaft 27, a piston 28, a hydraulic cylinder 29, a generator 30, and a gas turbine 31. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0019] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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 only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0020] like Figure 1 As shown, the novel raft type wave energy power generation device of the present invention comprises a raft body, an incoming flow correction system, a hinge joint, a hydraulic power generation device and a fixing device; Fixing devices are installed on both sides of the raft body, and the adjacent raft bodies are connected to the hydraulic power generation device through the fixing devices on both sides; the adjacent raft bodies are hinged transversely by a spherical hinge 10, and a hydraulic power generation device is arranged transversely between the adjacent raft bodies; The incoming flow correction system 16 is arranged at the center of the bottom of the raft body and is connected by a plane hinge, and the plane hinge is connected to the connecting rod 25 obliquely through a hydraulic power generation device; The connecting rod 25 is vertically arranged at the lower position between two adjacent raft bodies, and one end is connected by a spherical hinge 10, and the other end is provided with a hydraulic power generation device, and the end of the hydraulic power generation device is connected to the mooring rope 26; The present invention adopts a correction system to adjust the arrangement direction of the raft wave energy utilization device in real time. When there is an angle between the direction of the ocean current and the arrangement direction of the device, the force of the ocean current on the impeller of the incoming flow correction system generates torque on the entire device, prompting the power generation device to rotate to a direction parallel to the ocean current. The raft wave energy utilization device in the present invention has the ability to automatically adapt to the incoming flow direction, and the ability of the wave energy power generation device to capture wave energy is improved. The raft wave energy utilization device in the present invention has a hydraulic power generation system in the vertical and swinging directions. Under the impact of waves, the device can capture the wave energy absorbed by the vertical and swinging movements to a great extent, improve the energy capture efficiency, and further enhance the power generation capacity.

[0021] One of the preferred embodiments is as follows Figure 2 As shown, the raft body comprises a first raft body 1 and a second raft body 2; The hydraulic power generation device includes a first hydraulic power generation device 3, a second hydraulic power generation device 4, a third hydraulic power generation device 5, a fourth hydraulic power generation device 6, a fifth hydraulic power generation device 7, a sixth hydraulic power generation device 8 and a seventh hydraulic power generation device 9; The planar hinge comprises a first planar hinge 11, a second planar hinge 12, a third planar hinge 14, and a fourth planar hinge 15; The first hydraulic power generation device 3 and the fourth hydraulic power generation device 6 are disposed transversely between the adjacent first raft 1 and the second raft 2; The second hydraulic power generating device 4 and the third hydraulic power generating device 5 are symmetrically arranged at the bottom of the first raft body 1, and one end of the second hydraulic power generating device 4 and the third hydraulic power generating device 5 are connected to the first plane hinge 11 at the bottom of the first raft body 1, and the other end of the third hydraulic power generating device 5 is connected to the connecting rod 25 through the third plane hinge 14; the other end of the second hydraulic power generating device 4 is connected to the connecting rod of the adjacent raft body on the other side; One end of the seventh hydraulic power generation device 9 is connected to the connecting rod 25, and the other end is connected to the mooring rope 26; The fifth hydraulic power generating device 7 and the sixth hydraulic power generating device 8 are symmetrically arranged at the bottom of the second raft body 2, and one end of the fifth hydraulic power generating device 7 is connected to the second plane hinge 12 at the bottom of the second raft body 2, the other end of the fifth hydraulic power generating device 7 is connected to the connecting rod 25 through the fourth plane hinge 15, and the sixth hydraulic power generating device 8 is connected to the connecting rod of another adjacent raft body; One of the preferred embodiments is as follows Figure 3 As shown, the fixing device includes a first fixing device 17, a second fixing device 18, a third fixing device 19, a fourth fixing device 20, a fifth fixing device 21, a sixth fixing device 22, a seventh fixing device 23 and an eighth fixing device 24; The fifth fixing device 21 and the first fixing device 17 are respectively arranged at the upper and lower ends of the left side of the first raft body 1, and the sixth fixing device 22 and the second fixing device 18 are respectively arranged at the upper and lower ends of the right side of the first raft body 1; The seventh fixing device 23 and the third fixing device 19 are respectively arranged at the upper and lower ends of the left side of the second raft body 2; the eighth fixing device 24 and the fourth fixing device 20 are respectively arranged at the upper and lower ends of the right side of the second raft body 2; The second fixing device 18, the third fixing device 19, the seventh fixing device 23 and the sixth fixing device 22 are connected by a spherical hinge 10 and are welded to the spherical hinge 10; a fourth hydraulic power generation device 6 is arranged between the seventh fixing device 23 and the sixth fixing device 22; a first hydraulic power generation device 3 is arranged between the second fixing device 18 and the third fixing device 19; The fixing device is a plate-like structure made of steel; One of the preferred embodiments is as follows Figure 5 As shown, the incoming flow correction system comprises a housing, a rotating shaft 27 and an impeller 13. The housing is connected to a joint of a plane hinge through a connecting rod. The rotating shaft 27 and the impeller 13 are arranged inside the housing. One end of the rotating shaft 27 is connected to the impeller 13, and the other end of the rotating shaft 27 is connected to the connecting rod; the impeller 13 has two blades. The incoming flow correction system under each raft is impacted by waves. When the arrangement direction of the power generation device is at an angle with the incoming flow direction of the waves, the rotating shaft 27 and the impeller 13 in the incoming flow correction system are impacted by an oblique direction at a certain angle to the axial direction, generating a torque to drive the raft to rotate until the rotating shaft 27 of the incoming flow correction system is parallel to the incoming flow direction, and the torque disappears. At this time, the arrangement direction of the power generation device is parallel to the incoming flow direction.

[0022] One of the preferred embodiments is as follows Figure 4 As shown, the hydraulic power generation device comprises a piston 28, a hydraulic cylinder 29, two gas turbines 31 and a generator 30; the piston 28 is fixedly connected to the connecting rod, the piston 28 is arranged in the hydraulic cylinder 29, the two sides of the hydraulic cylinder 29 are respectively connected to the gas turbines 31, and a generator 30 is arranged between the two gas turbines 31; when the raft type wave energy power generation device is impacted by the waves, the two adjacent raft sections are relatively displaced and rotated, driving the piston 28 to move, compressing the gas in the hydraulic cylinder 29, and driving the gas turbine 31 to rotate, thereby driving the generator 30 to generate electricity.

[0023] Example 1 The raft is a cylindrical hollow float. Adjacent rafts are hinged by spherical hinges. A vertical connecting rod is connected below the hinge joint, and the other end is connected to a hydraulic power generation device. A flexible mooring cable 16 is connected below the hydraulic power generation device to fix it to the seabed or a heavy object. The front and rear ends of both sides of the raft are connected to the hydraulic power generation device by a fixing device. A plane hinge joint is set at the center of the lower part of the raft to connect the hydraulic power generation devices on both sides respectively. The other end of the hydraulic power generation device is fixed to the vertical connecting rod. The upper end of the fixed vertical connecting rod is hinged to the plane hinge connection, and the lower end is connected to the piston device of the hydraulic power generation device below through a fixed rod. The connecting rods at both ends of the oblique hydraulic power generation device are connected to the plane hinge.

[0024] The two sides of the raft body and the two ends of the hydraulic power generation device are connected to the adjacent raft body by using fixing devices, and the fixing devices are connected by welding, and the two connected objects do not have relative rotational movement.

[0025] The spherical hinge connection can rotate in any direction, while the planar hinge can only rotate within the plane where the long side of the raft is located.

[0026] The incoming flow correction system is set at the center of the lower part of the raft body, which is connected by a plane hinge. The correction system includes a shell, a rotating shaft, and an impeller. The shell is connected to the hinge joint through a connecting rod, and contains a rotating shaft inside, which is connected to the impeller. The impeller has two blades. The hydraulic power generation device includes a hydraulic piston, a hydraulic cylinder, a gas turbine and a generator. The piston movement compresses the gas in the hydraulic cylinder to drive the gas turbine to rotate, which further drives the generator to generate electricity.

[0027] When the raft wave energy power generation device is impacted by waves, two adjacent raft bodies are relatively displaced and rotated, driving the pistons in the first hydraulic power generation device 3, the second hydraulic power generation device 4, the third hydraulic power generation device 5, the fourth hydraulic power generation device 6, the fifth hydraulic power generation device 7, and the sixth hydraulic power generation device 8 to move, compressing the gas in the hydraulic cylinder. The gas flows through the turbine to cause it to rotate, further driving the generator to generate electricity. When the wave crest moves to the location of the device, the device moves upward as a whole, driving the seventh hydraulic power generation device 9 to generate electricity by piston movement. At the same time, the incoming flow correction system under each raft body is impacted by waves. When the arrangement direction of the power generation device is at an angle with the incoming flow direction of the waves, the rotating shaft 27 and the impeller 13 of the incoming flow correction system are subjected to an oblique impact force at a certain angle to the axial direction, generating a torque to drive the raft body to rotate until the rotating shaft 27 of the incoming flow correction system is parallel to the incoming flow direction, and the torque disappears. At this time, the arrangement direction of the power generation device is parallel to the incoming flow direction.

[0028] When the raft type wave energy power generation device is impacted by waves, the mooring cable 26 is tightened to generate mooring force and act on the raft type wave energy power generation device through the connecting rod 25, ensuring that the device is in a relatively stable position under the action of waves. At the same time, due to the positioning effect, the relative displacement and rotation between the raft bodies are increased, and the seventh hydraulic power generation device 9 undergoes a larger displacement movement, further improving the energy capture efficiency.

[0029] The raft wave energy power generation device in the present invention can absorb the energy of the vertical and two-direction swing at the same time. Compared with the conventional raft device, it increases the absorption and utilization of wave energy in two dimensions, greatly improving the energy capture and conversion efficiency. At the same time, the device is equipped with an incoming flow correction system, which can ensure that the arrangement direction of the raft body of the raft wave energy device is basically consistent with the incoming wave direction, thereby improving the wave energy capture capacity and efficiency. The new raft wave energy power generation device in the present invention has high working efficiency and good application prospects.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0035] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0036] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0038] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A raft-type wave energy power generation device with high efficiency, characterized in that: include, Raft and current correction system (16); Fixing devices are installed on both sides of the raft body, and the adjacent raft bodies are connected to the hydraulic power generation device through the fixing devices on both sides; the adjacent raft bodies are hinged transversely by a spherical hinge (10), and the hydraulic power generation device is arranged transversely between the adjacent raft bodies; The incoming flow correction system (16) is arranged at the center of the bottom of the raft body and is connected by a plane hinge, and the plane hinge is connected to the connecting rod (25) in an oblique direction through a hydraulic power generation device; The connecting rod (25) is vertically arranged at a lower position between two adjacent raft bodies, and one end is connected via a spherical hinge (10), and the other end is provided with a hydraulic power generation device, the end of the hydraulic power generation device is connected to a mooring cable (26).

2. A highly efficient energy-harvesting raft-type wave energy power generation device according to claim 1, characterized in that: The hydraulic power generation device comprises a first hydraulic power generation device (3), a second hydraulic power generation device (4), a third hydraulic power generation device (5), a fourth hydraulic power generation device (6) and a seventh hydraulic power generation device (9); The first hydraulic power generation device (3) and the fourth hydraulic power generation device (6) are arranged transversely between two adjacent raft bodies; The second hydraulic power generation device (4) and the third hydraulic power generation device (5) are symmetrically arranged at the bottom of the raft body, and one end is connected to a plane hinge at the bottom of the raft body, and the other end is connected to a connecting rod (25) through a plane hinge; One end of the seventh hydraulic power generation device (9) is connected to the connecting rod (25), and the other end is connected to the mooring rope (26).

3. The high-efficiency energy-harvesting raft-type wave energy power generation device according to claim 1, characterized in that: The incoming flow correction system comprises a housing, a rotating shaft (27) and an impeller (13); the housing is connected to a joint of a planar hinge via a connecting rod; the rotating shaft (27) and the impeller (13) are arranged inside the housing; one end of the rotating shaft (27) is connected to the impeller (13); and the other end of one end of the rotating shaft (27) is connected to the connecting rod.

4. The highly efficient energy-harvesting raft-type wave energy power generation device according to claim 1, characterized in that: The hydraulic power generation device comprises a piston (28), a hydraulic cylinder (29), a gas turbine (31) and a generator (30); When the raft-type wave energy power generation device is impacted by sea waves, two adjacent raft bodies undergo relative displacement and rotation, driving the piston (28) to move, compressing the gas in the hydraulic cylinder (29), driving the gas turbine (31) to rotate, and thereby driving the generator (30) to generate electricity.

5. The highly efficient energy-harvesting raft-type wave energy power generation device according to claim 1, characterized in that: The fixing device is fixedly connected to the raft body and the spherical hinge (10) by welding.

6. The high-efficiency energy-harvesting raft-type wave energy power generation device according to claim 1, characterized in that: The raft bodies are arranged in an array.

7. The raft-type wave energy power generation device with high efficiency energy capture according to claim 1 is characterized in that: The raft body is a cylindrical hollow float.

8. The high-efficiency energy-harvesting raft-type wave energy power generation device according to claim 1, characterized in that: The ends of the mooring cables (26) are fixed on the seabed.

9. The high-efficiency energy-harvesting raft-type wave energy power generation device according to claim 1, characterized in that: The spherical hinge can rotate in any direction, while the planar hinge can only rotate within the plane where the long side of the raft body is located.

10. A working method of a high-efficiency energy-harvesting raft-type wave energy power generation device according to any one of claims 1 to 9, characterized in that: include, When the raft wave energy power generation device is impacted by waves, two adjacent raft sections undergo relative displacement and rotation, driving the lateral and oblique hydraulic power generation devices to generate electricity; When the wave crest moves to the location of the raft wave energy power generation device, the raft wave energy power generation device moves upward as a whole, driving the vertical hydraulic power generation device to generate electricity; The current correction system under each section of the raft is impacted by the waves. When the arrangement direction of the raft-type wave energy power generation device is at an angle to the wave current direction, the current correction system is subjected to an impact force in an oblique direction at a certain angle to the axial direction, generating a torque to drive the raft to rotate until the current correction system is parallel to the current direction and the torque disappears, thereby adjusting the arrangement direction of the raft-type wave energy power generation device to be parallel to the current direction.

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