A surge power generation device

Abstract

The utility model relates to a kind of surge power generation device, including power generation part and the float body being set in its top;Rotary shaft is equipped in the cavity in the power generation part;Rotary shaft is connected with eccentric block with rotation stop;The eccentric block extends towards the direction away from rotary shaft;Rotary shaft is connected with generator to utilize the rotation of rotary shaft to drive generator power generation;Rotary shaft is also connected with the drive motor for driving rotary shaft rotation.The utility model's drive motor can actively drive rotary shaft rotation under small amplitude wave condition, to effectively drive eccentric block rotation, to better make power generation part more easily in unbalanced state, power generation part can effectively realize the rotation of eccentric block under smaller wave excitation, by the effect of drive motor, overcome the eccentric block starting difficulty, in small amplitude wave, easily trapped in stagnation of use limitation and defect, to improve the utilization of small amplitude wave, corresponding starting difficulty will also be reduced.

Description

Technical Field

[0001] This utility model relates to the field of buoys, and more particularly to a surge power generation device. Background Technology

[0002] A buoy is a structure that floats on the water's surface. The most common type of buoy is a navigational aid, an important facility for ensuring the safe and economical navigation of ships. It plays a vital role in the development of maritime transportation, marine resource development, fishing, and national defense, while also providing some support for marine scientific research. Navigational aids generally have four functions: positioning, hazard warning, confirmation, and traffic guidance. Other buoys may have functions such as measurement and signal transmission / reception.

[0003] The energy source for buoys is primarily electricity, which can be divided into two main categories: conventional electricity and renewable electricity. Conventional electricity typically uses batteries, which require periodic battery replacements. Another option is to power the buoy with shore-based electricity via underwater cables, which necessitates laying these cables. Renewable electricity, on the other hand, refers to electricity generated from renewable natural energy sources. Its advantages include on-site energy generation, avoiding battery replacements or underwater cable laying. It is clean and pollution-free, abundant in reserves, sustainable, has a long maintenance cycle, and is easy to use, making it a product with enormous development potential.

[0004] Solar-powered buoys utilize solar cells to convert solar energy into electrical energy, which is stored in batteries to power the buoy. Currently, solar cells are widely used in buoys, with advantages including: renewable, noiseless, and pollution-free operation; simple equipment with no moving parts; long lifespan and easy maintenance; and relatively stable output power. However, their disadvantages include: solar panels are susceptible to damage and contamination from external factors. Their surface is easily covered by salt spray, gradually forming a salt layer that affects sunlight exposure, reduces power generation efficiency, and in severe cases, completely stops generating electricity, requiring manual washing to restore power; cloudy days reduce solar cell performance, and they cannot work at night; solar panels are easily damaged in extreme sea conditions; and in high-latitude regions, there are issues such as small incident angles.

[0005] Wave energy buoys generate electricity using the waves around them, continuously supplying power to their batteries. Wave energy is a abundant, high-quality, clean, and all-weather renewable energy source. Meanwhile, buoys, primarily floating devices on land or water, utilize wave energy to achieve energy self-sufficiency, offering convenience, feasibility, and operability. Wave energy generation devices use the motion of the device under the influence of waves to drive a generator, converting the kinetic and potential energy of the waves into electrical energy. Wave energy generation devices come in various forms, including pendulum-type wave energy generation devices and oscillating buoy-type wave energy generation devices.

[0006] Among them, the eccentric pendulum wave energy generation device achieves multi-directional capture of wave energy by exciting the built-in horizontal pendulum through the response of the floating body. Moreover, its floating structure can adapt to the development of wave energy under deep water conditions, making it a highly promising form of power generation. However, wave energy at sea is not stable. The amplitude and period of the incident waves are affected by factors such as geographical environment and marine climate, exhibiting significant spatiotemporal differences and randomness. Under the influence of random wave amplitude and period, eccentric pendulum wave energy devices do not always operate efficiently. Since the generator's starting damping is usually greater than its normal operating damping, when the pendulum becomes stagnant due to small-amplitude or small-period waves over a certain period, restarting it requires a larger wave excitation condition than normal operation. This often results in the pendulum not being able to start up in time when the wave conditions return to the matching operating range, reducing energy conversion efficiency. At the same time, under small-amplitude wave conditions, general eccentric pendulum wave energy power generation devices cannot operate normally, resulting in a certain downtime. Matching wave amplitude is required for normal operation. In other words, existing eccentric pendulum wave energy power generation devices have a high demand for wave amplitude, making it impossible to utilize small waves below the normal operating range. On the other hand, the wave amplitude required for starting power generation is higher than the normal operating wave amplitude, resulting in a large area of ​​waves that cannot be effectively utilized, leading to low energy conversion efficiency.

[0007] Under the influence of waves, buoys undergo both heave and roll motions. In existing eccentric pendulum wave energy generation devices, the rotation of the horizontal pendulum caused by the roll motion is mainly used for power generation. The energy utilization rate of the heave motion is low, resulting in a low energy conversion rate of the waves and a large wave amplitude required for power generation.

[0008] Furthermore, the positioning of floating structures at sea relies on the anchoring system. However, existing anchoring methods, especially catenary anchoring, are greatly affected by water depth. Deep-water mooring has a large anchoring radius and occupies a large sea area. Existing catenary anchoring generally uses at least three anchor chains to fix the buoy in a relatively fixed position. Although it has good resistance to wind and waves, it has the problem that the anchor chains cannot be reused. When the buoy malfunctions and needs to be disassembled for repair or replacement, the multiple anchor chains in the existing technology are difficult to apply to the new buoy after disassembly. Therefore, the existing technology generally involves directly cutting the anchor chains and then re-fixing the new buoy. Utility Model Content

[0009] To address the aforementioned problems in the prior art, this utility model provides a surge power generation device.

[0010] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0011] A surge power generation device includes a power generation unit and a buoy body mounted on its top; a rotating shaft is provided in a cavity within the power generation unit; an eccentric block is connected to the rotating shaft to prevent rotation; the eccentric block extends in a direction away from the rotating shaft; the rotating shaft is connected to a generator to generate electricity by rotating the rotating shaft; a drive motor for driving the rotating shaft to rotate is also connected to the rotating shaft.

[0012] In one embodiment of this utility model, the buoy body is further provided with an energy storage unit; and several drive units for moving the buoy in water are connected to the buoy body.

[0013] In one embodiment of the present invention, an anchor chain connecting ring is connected to the bottom of the power generation unit; an anchor chain is connected to the anchor chain connecting ring.

[0014] In one embodiment of this utility model, the top of the power generation unit is sealed to the buoy body via an elastic connector; the bottom plate of the buoy body, the elastic connector, and the top plate of the power generation unit constitute a sealed chamber.

[0015] In one embodiment of this utility model, the elastic connector is an elastic bellows.

[0016] In one embodiment of this utility model, one end of the rotating shaft extends into the sealed chamber and is connected to the second generator via a universal coupling; the second generator is connected to the base plate.

[0017] In one embodiment of this utility model, the rotating shaft extends into the sealing chamber through the center of the top plate and is connected to the universal coupling.

[0018] In one embodiment of this utility model, a first bevel gear is fixedly provided at the end of the rotating shaft away from the buoy body; a second bevel gear and a third bevel gear are fitted on the first bevel gear; the second bevel gear is connected to a first generator; and the third bevel gear is connected to the drive shaft of a drive motor.

[0019] The beneficial effects of this utility model are: the drive motor can actively drive the rotating shaft to rotate under small amplitude wave conditions, thereby effectively driving the eccentric block to rotate, which makes it easier for the power generation unit to be in an unbalanced state. The power generation unit can effectively realize the rotation of the eccentric block under smaller wave excitation. Through the action of the drive motor, the limitations and defects of the eccentric block in starting and easily getting stuck in small amplitude waves are overcome, thereby improving the utilization rate of small amplitude waves, reducing the corresponding starting difficulty, expanding the energy acquisition advantage of the power generation unit, and improving the energy conversion efficiency under random wave conditions.

[0020] Using a single anchor chain to secure the buoy body effectively reduces the difficulty of anchoring and maintenance / replacement, enables the reuse of the anchor chain, and, in conjunction with the function of the drive unit, allows for the active movement of the buoy body. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is the main structural view of this utility model;

[0023] Figure 2 yes Figure 1 AA section diagram;

[0024] Figure 3 yes Figure 2 The diagram does not include the anchor chain section.

[0025] Explanation of reference numerals in the attached drawings: 100, Generator; 110, Top plate; 120, Rotating shaft; 121, First bevel gear; 122, Second bevel gear; 123, Third bevel gear; 130, Eccentric block; 140, Drive motor; 150, Elastic connector; 160, First generator; 170, Second generator; 180, Universal coupling; 190, Anchor chain connecting ring; 200, Buoy body; 201, Bottom plate; 210, Energy storage unit; 220, Drive unit; 300, Anchor chain. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Examples, such as Figure 1-3 As shown:

[0030] A surge power generation device includes a power generation unit 100 and a buoy body 200 mounted on its top. The power generation unit 100 is typically submerged underwater during operation, while the buoy body 200 partially floats above the water surface. In one embodiment, an anchor chain connecting ring 190 is fixedly mounted on the bottom of the power generation unit 100. An anchor chain 300 is mounted on the anchor chain connecting ring 190. Preferably, only one anchor chain 300 is provided. While using only one anchor chain 300 results in a larger movable radius for the buoy, it effectively reduces the difficulty of buoy positioning and improves the reusability of the anchor chain 300. In one embodiment, the buoy body 200 is provided with several drive units 220 for moving the buoy in the water. The drive units 220 enable the buoy to move autonomously in the water, moving it to a preset range. It is understood that the drive unit 220 can consist of a motor and a helical blade, with the motor driving the helical blade to rotate and thus providing driving force. In one embodiment, four drive units 220 are evenly distributed.

[0031] In one embodiment of this utility model, a rotating shaft 120 is provided in the cavity within the power generation unit 100; an eccentric block 130 is connected to the rotating shaft 120 to prevent rotation; the eccentric block 130 extends in a direction away from the rotating shaft 120; the rotating shaft 120 is connected to a generator to drive the generator to generate electricity by rotating the rotating shaft 120; a drive motor 140 for driving the rotating shaft 120 to rotate is also connected to the rotating shaft 120. The eccentric block 130 oscillates under the action of waves, and the eccentric block 130 is simultaneously subjected to gravity, thus rotating and driving the generator to generate electricity; the principle of the rotating shaft 120 driving the generator to generate electricity is common knowledge in the art, and its specific working principle will not be described in detail here; the setting of the drive motor 140 can achieve the effect of actively breaking the balance state of the eccentric block 130, avoiding the problems of starting difficulties and the inability of the buoy to generate electricity effectively in small wave conditions.

[0032] The function of the drive motor 140 also breaks the technical prejudice in the prior art. In the prior art, it is generally believed that using a motor to drive the rotating shaft 120 to rotate to generate electricity will definitely generate less electricity than it consumes, and it cannot effectively increase the amount of electricity. However, in this utility model, after the drive motor 140 drives the rotating shaft 120 to rotate, the electricity generated by the buoy will be far more than the amount of electricity consumed.

[0033] In this invention, the drive motor 140 mainly operates in small wave scenarios, where the buoy's movement amplitude is small and cannot meet the normal power generation requirements. However, the operation of the drive motor 140 can cause the eccentric block 130 to rotate. After the eccentric block 130 rotates, the center of gravity of the power generation unit 100 shifts, resulting in a large yaw motion. Small waves will promote the yaw motion. After a period of time, when the yaw motion amplitude of the power generation unit 100 decreases, the drive motor 140 will drive the eccentric block 130 to rotate a certain distance again, further ensuring the continuity of the yaw motion, thereby effectively realizing power generation in small wave scenarios where power generation is generally impossible.

[0034] Through actual testing, it was found that in some small-amplitude wave scenarios that are usually unusable, the drive motor 140 can be used to break the equilibrium state and generate electricity. Consuming one kilowatt-hour of electricity, the wave effect can generate three kilowatt-hours of electricity.

[0035] It is understandable that in actual scenarios, the drive motor 140 does not operate continuously, but only briefly, thereby effectively utilizing small-amplitude waves. Given that the operating mode of the drive motor 140 described above has been disclosed in this utility model, those skilled in the art can easily implement it using existing technology. For example, those skilled in the art can use gyroscopes, accelerometers, etc., to detect the degree of buoy swaying. When the detected buoy swaying amplitude / acceleration is too small, the drive motor 140 can be controlled to operate briefly, such as rotating the drive motor 140 half a turn, one turn, or a quarter turn, all of which can force the eccentric block 130 to move effectively. In one embodiment, the brief operation of the drive motor 140 can also be set to a short duration, such as operating for 1 second and then stopping, or operating for 0.5 seconds and then stopping, waiting for the swaying amplitude of the generator 100 to decrease significantly before resuming brief operation.

[0036] In this invention, the drive motor 140 can actively drive the rotating shaft 120 to rotate under small amplitude wave conditions, thereby effectively driving the eccentric block 130 to rotate. The power generation unit 100 can effectively achieve the rotation of the eccentric block 130 under smaller wave excitation. Through the action of the drive motor 140, the limitations and defects of the eccentric block 130 in starting difficulty and easily getting stuck in small amplitude waves are overcome, thereby improving the utilization rate of small amplitude waves, reducing the corresponding starting difficulty, expanding the energy acquisition advantage of the power generation unit 100, and improving the energy conversion efficiency under random wave conditions.

[0037] In one embodiment of the present invention, the buoy body 200 is further provided with an energy storage section 210; the energy storage section 210 is used to store electrical energy, and the electricity generated by the power generation section 100 is stored in the energy storage section 210.

[0038] In one embodiment of the present invention, the bottom of the power generation unit 100 is connected to an anchor chain connecting ring 190; an anchor chain 300 is connected to the anchor chain connecting ring 190.

[0039] In one embodiment of this utility model, the top of the power generation unit 100 is sealed to the buoy body 200 via an elastic connector 150; the bottom plate 201 of the buoy body 200, the elastic connector 150, and the top plate 110 of the power generation unit 100 constitute a sealed chamber; the elastic connector 150 can also prevent garbage from entering the sealed chamber, and the elastic connector 150 can also adapt to the lateral movement of the power generation unit 100.

[0040] In one embodiment of this utility model, the elastic connector 150 is an elastic bellows.

[0041] In one embodiment of this utility model, the top of the power generation unit 100 can be directly and rigidly connected to the buoy body 200. It can be understood that directly fixing the two parts together can also achieve the effect of this utility model.

[0042] In one embodiment of the present invention, a first bevel gear 121 is fixedly provided at one end of the rotating shaft 120 away from the float body 200; a second bevel gear 122 and a third bevel gear 123 are fitted on the first bevel gear 121; the second bevel gear 122 is connected to the first generator 160; and the third bevel gear 123 is connected to the drive shaft of the drive motor 140.

[0043] In one embodiment of this utility model, one end of the rotating shaft 120 extends into the sealed chamber and is connected to the second generator 170 via a universal coupling 180; the second generator 170 is connected to the top plate 110. Since the generator unit 100 will sway relative to the buoy body 200, the universal coupling 180 ensures the free deflection movement of the generator unit 100, while also enabling power generation via the second generator 170. The universal coupling 180 is a commonly used component in the art, and its structure will not be described in detail here. Those skilled in the art are aware of its connection method with the rotating shaft 120 and the second generator 170.

[0044] It is understood that two generators can be provided in this utility model, which are respectively connected to both ends of the rotating shaft 120. In one embodiment, only one generator can be provided.

[0045] In one embodiment of the present invention, the rotating shaft 120 extends into the sealed chamber through the center of the top plate 110 and is connected to the universal coupling 180; it can be understood that the generator 100 mainly performs lateral movement around the position of the universal coupling 180.

[0046] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A surge power generation device, characterized in that: The device includes a power generation unit (100) and a buoy body (200) mounted on its top; a rotating shaft (120) is provided in the cavity inside the power generation unit (100); an eccentric block (130) is connected to the rotating shaft (120) to prevent rotation; the eccentric block (130) extends in a direction away from the rotating shaft (120); the rotating shaft (120) is connected to a generator to generate electricity by rotating the rotating shaft (120); a drive motor (140) for driving the rotating shaft (120) to rotate is also connected to the rotating shaft (120).

2. The surge power generation device according to claim 1, characterized in that: The buoy body (200) is also provided with an energy storage unit (210); the buoy body (200) is connected to several drive units (220) for moving the buoy in the water.

3. The surge power generation device according to claim 1, characterized in that: The bottom of the power generation unit (100) is connected to an anchor chain connecting ring (190); an anchor chain (300) is connected to the anchor chain connecting ring (190).

4. A surge power generation device according to claim 1, characterized in that: The top of the power generation unit (100) is sealed to the buoy body (200) via an elastic connector (150); the bottom plate (201) of the buoy body (200), the elastic connector (150), and the top plate (110) of the power generation unit (100) constitute a sealed chamber.

5. A surge power generation device according to claim 4, characterized in that: The elastic connector (150) is an elastic bellows.

6. A surge power generation device according to claim 4, characterized in that: One end of the rotating shaft (120) extends into the sealed chamber and is connected to the second generator (170) via a universal coupling (180); the second generator (170) is connected to the base plate (201).

7. A surge power generation device according to claim 6, characterized in that: The rotating shaft (120) extends through the center of the top plate (110) into the sealed chamber and is connected to the universal coupling (180).

8. A surge power generation device according to claim 5, characterized in that: The first bevel gear (121) is fixedly provided at one end of the rotating shaft (120) away from the buoy body (200); the first bevel gear (121) is fitted with a second bevel gear (122) and a third bevel gear (123); the second bevel gear (122) is connected to the first generator (160); the third bevel gear (123) is connected to the drive shaft of the drive motor (140).

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