Turbine rotor assembly, float and its oscillating float wave power generation unit

Abstract

In the turbine rotor assembly of the first aspect of the present application, the truncated cone or conical shape of the hub can reduce fluid resistance; the hinged movable blades can automatically unfold under the action of the forward fluid and form a one-way turbine blade with the fixed blades, and when the fluid flows in the reverse direction, the movable blades can automatically close and overlap each other to shield the water outlet; thus, the turbine rotor assembly can efficiently obtain fluid energy and will not reverse. The float of the second aspect is drop-shaped, including a spherical head and a conical tail, with small oscillation resistance on the water surface, stable posture, and high efficiency in obtaining wave oscillation energy. The oscillating float wave power generation unit of the third aspect adopts the above-mentioned float and turbine rotor assembly.

Description

Technical Field

[0001] The present application belongs to the technical field of ocean wave power generation, and specifically relates to a turbine mechanism and a float for obtaining wave energy, and an oscillating float wave power generation device including the turbine mechanism and the float. Background Art

[0002] Traditional fossil fuel and hydropower generation have limited resources and damage the ecological environment. Environmentally friendly wave energy is widely distributed and has large reserves. It can generate electricity locally to meet the needs of islands and offshore facilities. In 1910, the French developed a fixed vertical pipeline (air piston) wave power generation device with a power of 1,000 watts. The ocean contains huge energy and is unpredictable, and offshore facilities are easily damaged. At present, there are many kinds of engineered wave power generation equipment, most of which are expensive. Multiple oscillating float wave power generation equipment are interconnected to form a sea surface mesh power generation facility, which can adapt to the offshore environment and has good cost controllability.

[0003] There are two main types of oscillating float wave power generation equipment. (1) The multi-degree-of-freedom hydraulic mechanism is built into the capsule float, or connected to the swing arm float to obtain the wave oscillation energy and drive the rotor generator, but the hydraulic mechanism will be overloaded and damaged under extreme conditions. (2) The traction float is used to directly obtain the up and down oscillation energy of the wave and reciprocate to drive the linear generator. The structure is reliable, but the efficiency of the linear generator is low. In addition, the shape of the traction float is very important for the stable operation of the generator, but there are few reports and the form is single. Summary of the invention

[0004] The technical problem to be solved by this application is how to improve the turbine mechanism and the float to achieve effective acquisition of wave oscillation energy.

[0005] According to a first aspect of the present application, a turbine rotor assembly is provided.

[0006] The turbine rotor assembly has a central axis and is used to extract fluid energy by unidirectional rotation around the central axis. It includes:

[0007] The hub has a truncated cone or cone shape;

[0008] There are multiple fixed blades, which are evenly fixedly connected to the outer side of the hub in the circumferential direction, and the combination of gaps between them is provided with a water inlet end and a water outlet end; and

[0009] There are multiple movable blades, each of which is hinged to the fixed blade with a free side edge of the fixed blade as a pivot. Under the action of a preset positive fluid, it can automatically unfold to form a unidirectional turbine blade with the fixed blade, and under the action of a preset reverse fluid, it can automatically close and overlap each other to cover the water outlet.

[0010] With the above structure, the frustum-shaped or conical shape of the hub can reduce fluid resistance. The hinged movable blades can automatically unfold under the action of a preset forward fluid, and together with the fixed blades, form a unidirectional turbine blade with a larger area, which can efficiently obtain fluid energy. When the fluid flows in the reverse direction, the movable blades can automatically close and overlap each other under the action of the fluid to shield the water outlet, thereby preventing the fluid from flowing in the reverse direction, and the turbine rotor assembly will not reverse and continue to rotate by inertia.

[0011] Optionally, the fixed blade includes an inner edge, an outer edge, an upper edge and a lower edge, the inner edge is fixedly connected to the hub, the length of the upper edge is at least twice the length of the lower edge, the gaps at the lower edges of all the fixed blades are closed by an end seal, and the rotation trajectory profile of the outer edge belongs to a conical surface with a cone angle of not less than 90 degrees; the movable blade is hinged to the fixed blade with the middle part of the outer edge of the fixed blade as a pivot, and can automatically close and overlap each other to cover the opening formed by the end seal and the two adjacent outer edges.

[0012] With the above structure, the end seal and the movable blade cooperate with each other, which can better prevent the fluid from flowing in reverse through the interior of the turbine rotor assembly.

[0013] Optionally, it also includes an annular guide cover, which is arranged around the upper outer edge of the fixed blade. When the movable blade is closed, it can automatically close and overlap front and back to cover the opening formed by the end seal, the guide cover and two adjacent fixed blades.

[0014] With the above structure, the guide cover can utilize the supercharging effect to enhance the driving effect of the fluid. When the movable blades are in the closed state, they cooperate with the sealing end and the guide cover to better prevent the fluid from flowing in reverse through the interior of the turbine rotor assembly.

[0015] Optionally, the wheel hub is conical, and the end seal is located at the top of the cone of the wheel hub.

[0016] By adopting the above structure, the turbine rotor assembly can be installed at the end of the power input shaft protruding at the end of the power generation equipment, which is easy to operate.

[0017] Optionally, the movable blade is hinged to the fixed blade via a hinge.

[0018] In a second aspect of the present application, a float is provided for use in an oscillating float wave power generation device. The float is in the shape of a water droplet, including a spherical segment-shaped head and a conical tail, wherein the height of the spherical segment-shaped head is greater than the radius.

[0019] With the above structure, the water drop-shaped float is approximately streamlined and can float with its tail facing downward. It has small resistance and stable posture when oscillating on the water surface, and has high efficiency in acquiring wave oscillation energy.

[0020] Optionally, the cone angle of the conical tail of the float is 45 to 75 degrees.

[0021] With the above structure, when the float oscillates on the water surface, the tail of the float faces downward, and the component velocity in the direction of gravity can be kept basically uniform, which is beneficial to the stable operation of the power generation equipment.

[0022] Optionally, the float is a hollow structure.

[0023] Optionally, a filler is provided inside the float.

[0024] With the above structure, the filler can prevent more seawater from entering the damaged float, thereby improving the float's ability to resist damage from wind and waves and reducing the sealing requirements of the float.

[0025] In a third aspect of the present application, an oscillating buoy wave power generation unit is provided.

[0026] The oscillating float wave power generation unit comprises: the float of the second aspect of the present application, which is used to float on the water surface and oscillate with the waves, and is provided with side ears for connecting to each other to form a net; a connecting part, whose upper end is fixedly connected to the float and whose lower end can extend to the underwater still water area; a generator assembly, which is fixedly installed at the lower end of the connecting part, including a power input end; and the turbine rotor assembly of the first aspect of the present application, which can rotate around the central axis, and the hub is fixedly connected to the power input end and the central axes of the two coincide.

[0027] The above structure is adopted, in which the float is in the shape of a water drop, which is approximately a streamlined structure and can float with the tail facing downward. When oscillating on the water surface, the resistance is small and the posture is stable, and the efficiency of obtaining wave oscillation energy is high. The turbine rotor assembly and the frustum or cone shape of the hub can reduce the fluid resistance. The hinged movable blades can automatically unfold under the action of the forward fluid and form a one-way turbine blade with the fixed blades. When the fluid flows in the reverse direction, the movable blades can automatically close and overlap each other to cover the water outlet. Therefore, the turbine rotor assembly can efficiently obtain fluid energy and will not reverse.

[0028] Optionally, the assembly of the generator assembly and the hub of the turbine rotor assembly is in the shape of a teardrop.

[0029] With the above structure, the generator assembly and the wheel hub are also water drop streamlined after assembly, and the movement resistance in water is small.

[0030] Optionally, the connecting portion includes a connecting rod, a connecting rod fixing plate and a connecting rod connector, the connecting rod fixing plate is fixedly installed inside the float, one end of the connecting rod is fixedly connected to the central through hole of the connecting rod fixing plate, and the other end of the connecting rod is fixedly connected to the generator assembly through the connecting rod connector.

[0031] The beneficial effects of implementing this application are mainly:

[0032] (1) In the turbine rotor assembly of the first aspect, the truncated cone or conical shape of the hub can reduce fluid resistance; the hinged movable blades can automatically unfold under the action of the forward fluid and form a one-way turbine blade with the fixed blades; when the fluid flows in the reverse direction, the movable blades can automatically close and overlap each other to cover the water outlet; thus, the turbine rotor assembly can efficiently obtain fluid energy and will not reverse;

[0033] (2) The float of the second aspect is in the shape of a water droplet, including a spherical segment head and a conical tail. The height of the spherical segment head is greater than the radius, and the tail can float downward. When oscillating on the water surface, the resistance is small, the posture is stable, and the efficiency of obtaining wave oscillation energy is high;

[0034] (3) The third aspect is an oscillating buoy wave power generation unit, which uses the above-mentioned buoy and turbine rotor assembly and has good power generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The following drawings should be used in conjunction with the detailed description.

[0036] Figure 1 is a three-dimensional view of the first embodiment, wherein the movable blades are unfolded;

[0037] Figure 2 is another perspective view of the first embodiment, wherein the movable blades are closed;

[0038] Figure 3 yes Figure 1 A three-dimensional diagram of the remaining parts after all the movable blades in the device have been removed;

[0039] Figure 4 yes Figure 1 A top view schematic diagram of the distribution of movable blades in the middle;

[0040] Figure 5 yes Figure 1 A three-dimensional view of a single movable leaf with hinges;

[0041] Figure 6a is a schematic diagram of the second embodiment floating on the water surface as the waves surge;

[0042] Figure 6b is a schematic diagram of the second embodiment falling on the water surface as the waves recede;

[0043] Figure 7 is a schematic diagram of the structural decomposition of the second embodiment;

[0044] Figure 8 It is a schematic axial cross-sectional view of the second embodiment.

[0045] In the above figures, the symbols represent:

[0046] 1-turbine rotor assembly, 11-hub, 12-fixed blades, 12a-hinge shaft notch, 13- fairing, 14-movable blades, 14a-forward notch, 14b-rearward notch, 14c-rivet hole, 15-hinge, 16-end seal,

[0047] 2-generator assembly, 21-casing, 22-rotor generator, 23-transmission,

[0048] 3-connecting part, 31-connecting rod, 32-connecting rod fixing plate, 33-connecting rod connector,

[0049] 4-float, 41-spherical segment head, 411-float cover, 412-head lower body, 42-conical tail, 43-side ear, 5-seal. DETAILED DESCRIPTION

[0050] In order to fully understand the content of this application, embodiments are described below in conjunction with the accompanying drawings.

[0051] In this specification, orientation indicators such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "reverse" and "opposite" are based on the observation angles shown in the accompanying drawings, or on normal working conditions; "circumferential" refers to a circle whose center is the center of the cross section.

[0052] Embodiment 1

[0053] Turbine rotor assembly 1, see Figures 1 to 5 , it is used to extract fluid energy in a unidirectional rotational manner. Specifically, it is used in wave power generation equipment to extract the oscillation energy of waves; more specifically, it is used to extract the up and down oscillation energy of waves; under certain conditions, it can be installed in air piston wave power generation equipment to extract air flow energy.

[0054] The turbine rotor assembly 1 includes a hub 11 , fixed blades 12 , movable blades 14 and a guide cover 13 .

[0055] The hub 11 has a conical outer shape with a cone angle of 60 degrees.

[0056] There are 7 fixed blades 12. The fixed blades 12 are quadrilateral plates with a preset curved surface, including an inner edge, an outer edge, an upper edge and a lower edge. The inner edge is fixedly connected to the outer side of the hub 11. All fixed blades 12 are evenly distributed around the hub 11. The rotation trajectory profile of the outer edge belongs to a conical surface with a cone angle of 120 degrees. The length of the upper edge is 8 times the length of the lower edge.

[0057] A hinge axis notch 12a is provided in the middle of the outer edge for accommodating the rotating axis of the hinge 15 (i.e., hinge). The lower edge is located near the conical top of the hub 11. All gaps in the lower edge are closed by a disc-shaped end seal 16, and the center of the end seal 16 is fixedly connected to the conical top of the hub 11.

[0058] For the combination of gaps between all the fixed blades 12, the end including the upper edge is the water inlet end, and the end including the outer edge is the water outlet end.

[0059] There are 7 movable blades 14, which correspond to the fixed blades 11 one by one. The movable blades 14 are quadrilateral plates with a preset curved surface shape. The middle part of the outer edge (free side) of the fixed blade 12 is hinged to the movable blade 14 through a hinge 15. The front side edge (facing the rotation direction) of the movable blade 14 is provided with a forward notch 14a, which is aligned with the hinge axis notch 12a and accommodates the rotating shaft of the hinge 15. The rear side edge (facing away from the rotation direction) of the movable blade 14 is provided with a rear notch 14b.

[0060] The movable blade 14 is provided with a plurality of rivet holes 14c, one leaf (i.e. hinge arm) of the hinge 15 is fixedly connected to the movable blade 14 by rivets, and the other leaf of the hinge 15 is fixedly connected to the fixed blade 12 by rivets.

[0061] The flow guide cover 13 is annular and is arranged around the upper outer portion of the fixed blade 12. The flow guide cover 13 is a bell-mouth shape and can utilize the supercharging effect to enhance the driving effect of the fluid.

[0062] The turbine rotor assembly 1 extracts fluid energy ( Figure 1 , Figure 6a ), the movable blade 14 can automatically unfold under the preset forward fluid pressure and form a one-way turbine blade with the fixed blade 12. When the fluid starts to flow in the reverse direction ( Figure 2 , Figure 6b ), the fluid pressure enables the movable blades 14 to automatically close, overlap front and back, and shield the opening composed of the end seal 16, the guide cover 13 and the adjacent fixed blades 12, that is, the movable blades 14 can automatically close, overlap each other in a fish scale shape, and shield the above-mentioned water outlet.

[0063] In the above-mentioned closed state, the rear side of the movable blade 14 overlaps the front side of the adjacent movable blade 14, and the rearward notch 14b correspondingly accommodates the rotating shaft portion of the hinge 15. Therefore, the fluid cannot flow reversely through the interior of the turbine rotor assembly 1, and the movable blade 14 prevents the reverse driving effect of the fluid.

[0064] When closed, the four sides of the movable blade 14 are not suspended in the air, and basically do not bear the bending moment of the reverse fluid. Specifically, one leaf of the hinge 15 is an alloy part, covering the center of the movable blade 14, and the contact area of ​​the two is about 1 / 4 of the area of ​​the movable blade 14. Therefore, the movable blade 14 will not be deformed under the action of the reverse fluid. For the movable blade 14, its thickness must be controlled to reduce its own weight, and it is necessary to use the hinge 15 for reinforcement.

[0065] In the turbine rotor assembly 1, the hinged movable blades 14 can be automatically unfolded under the action of a preset forward fluid, and together with the fixed blades 14, form a unidirectional turbine blade with a large area, which can efficiently obtain fluid energy. When the fluid flows in the reverse direction, the movable blades 14 can automatically close and cover the gap between the adjacent fixed blades 12 under the action of the fluid, preventing the fluid from flowing in the reverse direction, and the turbine rotor assembly 1 will not reverse but continue to rotate by inertia.

[0066] The specific structure of the one-way turbine blades and the guide cover 13 mentioned above belongs to the common knowledge in the field of fluid mechanics and does not need to be described in detail.

[0067] In other similar embodiments, the taper angle of the outer shape of the hub 11 may be any value between 45 degrees and 75 degrees.

[0068] In other similar embodiments, the cone angle of the conical surface where the rotation trajectory contour of the outer edge of the stationary blade 12 is located may be 90 degrees, 100 degrees, 110 degrees, 130 degrees, 140 degrees or 150 degrees.

[0069] In other similar embodiments, the length of the upper side is 2, 3, 4, 5, 6, 7, 9 or 10 times the length of the lower side. Alternatively, the length of the lower side is 0 or close to 0, that is, the fixed blade 12 is a triangular plate or a nearly triangular plate with a preset curved surface shape.

[0070] In other similar embodiments, the two leaves of the hinge 15 are bonded to the fixed blade 12 and the movable blade 14 to be fixedly connected.

[0071] In other similar embodiments, there are 5, 6 or 8 to 18 fixed blades 12, and the number of movable blades 14 can be less than the fixed blades 12. That is, one movable blade 14 can cover multiple fixed blades 12 when closed, and overlap each other in a fish scale shape to cover the above-mentioned water outlet.

[0072] In other similar embodiments, the hub 11 has a cylindrical or truncated cone shape. Correspondingly, the end seal 16 is annular, and other aspects are basically the same as those of the first embodiment.

[0073] Another embodiment of the turbine rotor assembly 1 is a conventional flat cylindrical shape, one end of which is a water inlet end and the other end is a water outlet end. The hub 11 is cylindrical. The fixed blade 12 is a long blade, which is arranged between the inner side of the deflector 13 and the hub 11. The two long sides of the fixed blade 12: one is the water-facing side, and the other is the water-receiving side. The side where the water-facing side is located is the water inlet end mentioned above, and the side where the water-receiving side is located is the water outlet end mentioned above, and the movable blade 14 is hinged on the water-receiving side.

[0074] Embodiment 2

[0075] Oscillating buoy wave power unit, see Figures 6a to 8 , which is the basic unit of offshore power generation equipment. Multiple oscillating floating wave power generation units are connected to each other to form a network-structured wave power generation facility.

[0076] The oscillating buoy wave power generation unit comprises a buoy 4, a connecting portion 3, a generator assembly 2, and a turbine rotor assembly 1 of the first embodiment.

[0077] The float 4 is used to float on the water surface and oscillate with the waves. The float 1 is in the shape of a water drop, including a spherical segment-shaped head 41 and a conical tail 42, and the height of the spherical segment-shaped head 41 is greater than the radius. A side ear 43 is provided on the outer side adjacent to the spherical segment-shaped head 41. Multiple oscillating float wave power generation units are connected to each other in a net shape through connecting rods or connecting ropes between the side ears 43. The float 1 is a hollow structure, and a filler is arranged inside the float 1, so as to reduce the amount of seawater poured in when it is damaged. The cone angle of the conical tail 42 is 60 degrees.

[0078] The connecting part 3 has an upper end fixedly connected to the float 4, and a lower end that can extend to the underwater still water area. The length of the connecting part 3 can be 4 to 8 times of the normal wave height. The connecting part 3 includes a connecting rod 31, a connecting rod fixing plate 32 and a connecting rod connector 33. The connecting rod fixing plate 32 is fixedly installed inside the float 4. One end of the connecting rod 31 is fixedly connected to the central through hole of the connecting rod fixing plate 32, and the other end of the connecting rod 31 is fixedly connected to the generator assembly 2 through the connecting rod connector 33.

[0079] The generator assembly 2 is fixedly mounted at the lower end of the connecting portion 3 and includes a power input end. The generator assembly 2 includes a housing 21 (only the upper half is drawn in the figure, and the lower half is a truncated cone with a cone angle of 60 degrees), and a rotor generator 22 and a transmission 23 located in the housing 21 and connected in series with each other. The power input shaft of the transmission 23 serves as the power input end of the generator assembly 2. The power input shaft of the transmission 23 extends from the bottom end of the housing 21 (which is a truncated cone table), and a bearing and a sealing ring are provided between the two. The transmission 23 is used to convert the low-speed rotation of the above-mentioned input shaft into high-speed rotation, thereby driving the rotor generator 22 to work at a sufficient speed.

[0080] The power input shaft of the transmission 23 is fixedly assembled with the wheel hub 11. The assembly of the housing 21 and the wheel hub 11 is similar in appearance to the float 4. That is, the assembly of the generator assembly 2 and the wheel hub 11 of the turbine rotor assembly 1 is similar in appearance to the float 4 (see Figure 8 ). The above assembly is in the shape of a water droplet and is approximately streamlined, so that the fluid resistance is low during movement.

[0081] Specifically, the connector 33 is fixedly connected to the top of the casing 21 , and a seal 5 is disposed between the two to prevent seawater from pouring into the generator assembly 2 from the connection between the two.

[0082] The hub 11 of the turbine rotor assembly 1 is fixedly connected to the input shaft, and the central axes of the two coincide. When the fluid flows in a preset direction, the turbine rotor assembly can rotate around its central axis, and when the fluid flow direction is reversed, the fluid cannot flow in the reverse direction inside the turbine rotor assembly 1 because the movable blades 14 are closed. Therefore, the turbine rotor assembly 1 will not reverse but will continue to rotate by inertia.

[0083] In other similar embodiments, the cone angle of the conical tail portion 42 of the float 4 may be 45, 50, 55, 65, 70 or 75 degrees.

[0084] In other similar embodiments, the float 4 may be a strip with a teardrop-shaped cross section, and a plurality of connecting parts 3 are sequentially arranged in the long axis direction, so as to suspend the assembly of a plurality of generators 2 and the turbine rotor assembly 1. In other similar embodiments, the connecting rod connector 33 includes a universal joint. When the float 4 swings in the opposite direction horizontally on the water surface, the generator assembly 2 and the turbine rotor assembly 1 at the lower end of the connecting part 3 can maintain a normal working posture, that is, the central axes of the two will not deviate too much from the direction of gravity.

[0085] In other embodiments, the hub 11 may be a part of the housing 21. This structure is common in wind turbines, but when it is set underwater, it is necessary to improve the sealing design.

[0086] In other embodiments, the generator assembly 2 may be disposed inside the float 4 and be drivingly connected to the top end of the connecting rod 31. The turbine rotor assembly 1 is disposed at the bottom end of the connecting rod 31 and drives the generator assembly 2 with the connecting rod 31 as a transmission shaft.

[0087] Embodiment 3

[0088] Float 4, see Figures 6a to 8 The float 4 is used for the oscillating float wave power generation device. The float 4 is drop-shaped and hollow.

[0089] The float 4 includes a spherical segment head 41 and a conical tail 42. The spherical segment head 41 is assembled by a hemispherical float cover 411 and the rest (i.e., the head lower body 422) through a flange. The head lower body 422 and the conical tail 42 are fixedly assembled as a whole.

[0090] The cone angle of the conical tail 42 is 60 degrees. The inner space of the float 4 is provided with a filler (not shown in the drawings).

[0091] The water drop shape is the shape of a drop of water falling freely in the air at a stable speed, and has a streamlined shape. The height of the spherical segment head 41 is greater than the radius, and the float 4 composed of the spherical segment head 41 and the conical tail 42 is substantially streamlined.

[0092] In other similar embodiments, the cone angle of the conical tail portion 42 of the float 4 may be 45, 50, 55, 65, 70 or 75 degrees.

[0093] All the above embodiments are intended to introduce the technical concept and features of the present application, so that those skilled in the art can understand and implement the present application, but they do not constitute any limitation on the protection scope of the present application. Simple modifications or equivalent changes to the above embodiments are within the protection scope of the present application.

Claims

1. A turbine rotor assembly having a central axis for extracting fluid energy by unidirectional rotation about the central axis, Features include: The hub has a truncated cone or cone shape; There are multiple fixed blades, which are evenly fixedly connected to the outer side of the hub in the circumferential direction, and the combination of gaps between them is provided with a water inlet end and a water outlet end; as well as There are multiple movable blades, each of which is hinged to the fixed blade with a free side edge of the fixed blade as a pivot. Under the action of a preset positive fluid, it can automatically unfold to form a unidirectional turbine blade with the fixed blade, and under the action of a preset reverse fluid, it can automatically close and overlap each other to cover the water outlet.

2. The turbine rotor assembly according to claim 1, It is characterized in that The fixed blade comprises an inner edge, an outer edge, an upper edge and a lower edge, the inner edge is fixedly connected to the hub, the length of the upper edge is at least twice the length of the lower edge, the gaps at the lower edges of all the fixed blades are closed by an end seal, and the rotation track profile of the outer edge belongs to a conical surface with a cone angle of not less than 90 degrees; The movable blade is hinged to the fixed blade with the middle part of the outer edge of the fixed blade as a pivot. The movable blade can automatically close and overlap each other to cover the opening formed by the end seal and two adjacent outer edges.

3. The turbine rotor assembly according to claim 2, It is characterized in that It also includes an annular air guide cover, which is arranged around the upper outer part of the fixed blade. When the movable blade is closed, it can automatically close and overlap front and back to cover the opening composed of the end seal, the air guide cover and two adjacent fixed blades.

4. The turbine rotor assembly according to claim 2, It is characterized in that The wheel hub is conical, and the end seal is located at the cone top of the wheel hub.

5. The turbine rotor assembly according to claim 1, It is characterized in that The movable blade is hinged to the fixed blade through a hinge.

6. An oscillating buoy wave power generation unit, Features include: The float is used to float on the water surface and oscillate with the waves, and is provided with side ears for connecting to form a net; A connecting portion, the upper end of which is fixedly connected to the float and the lower end of which can extend to the underwater still water area; a generator assembly, fixedly mounted at the lower end of the connecting portion, including a power input end; and The turbine rotor assembly according to any one of claims 1 to 5 is capable of rotating around the central axis, and the hub is fixedly connected to the power input end and their central axes coincide with each other.

7. An oscillating buoy wave power unit according to claim 6, It is characterized in that The float is in the shape of a water drop, and comprises a spherical segment-shaped head and a conical tail, wherein the height of the spherical segment-shaped head is greater than the radius.

8. An oscillating buoy wave power unit according to claim 7, It is characterized in that The cone angle of the conical tail of the float is 45 to 75 degrees.

9. An oscillating buoy wave power unit according to claim 8, It is characterized in that The assembly of the generator assembly and the hub of the turbine rotor assembly is in the shape of a water drop.

10. The oscillating buoy wave power unit according to claim 6, It is characterized in that The float is a hollow structure.

11. An oscillating buoy wave power unit according to claim 10, It is characterized in that A filler is arranged inside the float.

12. The oscillating buoy wave power unit according to claim 10, It is characterized in that The connecting part includes a connecting rod, a connecting rod fixing plate and a connecting rod connector. The connecting rod fixing plate is fixedly installed inside the float, one end of the connecting rod is fixedly connected to the central through hole of the connecting rod fixing plate, and the other end of the connecting rod is fixedly connected to the generator assembly through the connecting rod connector.

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