Ocean energy utilization device

Abstract

The invention belongs to the technical field of ocean energy utilization, and particularly relates to an ocean energy utilization device which comprises a sealed cabin, a sleeve shell and an oscillating floater. The oscillating floater is driven by sea waves to move up and down, and the sleeve shell rigidly connected with the oscillating floater and the middle column penetrating through the sealed cabin are driven to synchronously reciprocate; the upper section of the middle column directly drives the linear generator to generate power to complete core energy conversion; when the piston head moves upwards, cold seawater is sucked in through a filter plug at the tail end of the water inlet pipe, and at the moment, a one-way valve I is opened; when the piston head is pressed downwards, the first one-way valve is closed, seawater is pressurized, pumped into the flow guide grooves in the two sides of the interior of the sealed cabin and ascends along the grooves to flow through the cabin wall of the linear generator to be actively cooled, and the seawater absorbing heat jacks open the second one-way valve and is discharged from the water outlet pipe. Part of discharged water flow is evenly sprayed on the outer wall of the sealed cabin through a collector ring on the inner side of the supporting bridge, and the cleaning effect of the first scraping ring and the second scraping ring fixed to the sleeve shell in the follow-up scraping process is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ocean energy utilization, in particular to an ocean energy utilization device. BACKGROUND

[0002] Ocean energy utilization, especially wave energy conversion technology, aims to capture the reciprocating mechanical energy of sea waves and convert it into electrical energy, which is an important way of renewable energy development.

[0003] The existing oscillating buoy wave energy power generation device is usually single-function, mainly focusing on energy conversion itself, and lacks the integration of subsidiary functions in deep cooperation with the power generation process. This leads to two significant defects: first, the heat dissipation problem of the internal power generation unit in the closed environment is often ignored due to its operating environment at sea. Due to the presence of multiple barriers between the power generation device and the shell, and the internal dry sealing that causes heat to accumulate, only relying on passive heat dissipation may cause overheating damage and affect the reliability of the core function; second, in the face of the widespread biological attachment, corrosion, and severe sea condition impact in the marine environment, most existing technologies fail to effectively utilize the device's own operating process (such as cooling medium discharge, structural movement) to actively implement maintenance (such as cleaning, buffering), but rely on additional independent systems or high-cost regular manual maintenance, increasing system complexity, cost, and downtime risk. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an ocean energy utilization device to solve the problem of heat accumulation in the closed space of the existing power generation device.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: an ocean energy utilization device, comprising a sealed cabin and a linear generator for converting wave-generated energy to generate electricity, and a sleeve and an oscillating buoy for floating up and down under the action of waves and driving the linear generator, a cavity is formed inside the sealed cabin, a middle column for following the oscillating buoy to realize up-and-down reciprocating motion and driving the linear generator is inserted in the middle part of the cavity, a piston head is arranged at the bottom of the middle column, and when the middle column follows the oscillating buoy to move up and down, the piston head at the end of the middle column also moves up and down in the cavity, a water inlet pipe and a water outlet pipe are arranged at the bottom and top of the sealed cabin respectively, and a flow guide groove is formed inside the sealed cabin.

[0006] In some embodiments, the two ends of the cavity are in communication with the inside bottom of the flow guide groove, and the flow guide groove extends to both sides of the wall of the linear generator compartment.

[0007] In some embodiments, the position where the linear generator is connected to the cavity is provided with a dynamic sealing layer for ensuring the dryness of the operating environment of the linear generator.

[0008] In some embodiments, the inlet pipe and outlet pipe are respectively provided with a one-way valve one and a one-way valve two, the one-way valve one controls the inlet of seawater and prevents the outlet of seawater when the piston head draws seawater, and the one-way valve two controls the outlet of seawater and prevents the inlet of seawater.

[0009] In some embodiments, the end of the inlet pipe is provided with a filter plug for preventing the deposition of impurities in seawater.

[0010] In some embodiments, the inner side of the sleeve shell is provided with a scraper ring one, and the bottom of the sleeve shell is provided with a scraper ring two, when the sleeve shell reciprocates under the driving of the oscillating float, the scraper ring one and the scraper ring two provide scraping and cleaning effects on the outer surface of the sealed cabin.

[0011] In some embodiments, the scraper ring one adopts a three-layer partition layer, and the scraper ring two adopts a multi-layer composite ring structure, so that the up-and-down short stroke driven by the sea wave can also cover most of the space on the outer surface of the sealed cabin through segmented scraping.

[0012] In some embodiments, the two sides of the sleeve shell are provided with a support bridge which is arched upwards, and a top rod is arranged in the middle of the support bridge for realizing radial reciprocating limiting of the sleeve shell and the oscillating float, the top rod is inserted into the inside of the sealed cabin, and the outside of the top rod is provided with a laminated buffer pad for preventing the support bridge from directly impacting the top of the sealed cabin.

[0013] In some embodiments, the position of the support bridge inclined rod is provided with a bevel cap, the top of the bevel cap is provided with a cover plate, and the inner side of the cover plate is provided with an inner groove, when seawater is concentrated and shot out from the outlet pipe under the pressurization of the piston head, the water flow is sprayed on the reverse structure formed by the bevel cap, and through the contact of the water flow, the support bridge can actively slow down the impact when following the oscillating float downward.

[0014] In some embodiments, the inner side of the support bridge is further provided with a ring for uniformly scattering the water flow shot out from the outlet pipe on the outer wall of the sealed cabin, and realizing the effect of pre-softening of the attached objects, thereby improving the convergence of the scraping effect of the scraper ring one.

[0015] Compared with the prior art, the present application provides a marine energy utilization device: An ocean energy utilization device, driven by sea waves to drive the up-and-down movement of an oscillating buoy, the synchronous reciprocating movement of the sleeve shell rigidly connected thereto and the middle column penetrating the sealed cabin; the upper section of the middle column directly drives the linear generator to generate electricity, completing the core energy conversion; at the same time, the piston head at the lower end of the middle column does pumping movement in the cavity: when the piston head moves up, cold seawater is sucked in through the filter plug at the end of the water inlet pipe, and the one-way valve is opened at this time; when the piston head is pressed down, the one-way valve is closed, and the seawater is pumped into the flow guide grooves on both sides of the sealed cabin after being pressurized, and then rises along the grooves to flow through the cabin wall of the linear generator for active cooling, and the seawater after heat absorption opens the second one-way valve and is discharged from the water outlet pipe; the discharged water flows through the confluence ring inside the support bridge and is evenly sprayed on the outer wall of the sealed cabin, thereby softening the biological attachments in advance, thereby enhancing the cleaning effect of the scraper ring I and the scraper ring II when they are scraped; when a large wave is encountered, the support bridge will be greatly lowered with the buoy and will be impacted, at this moment, the piston head is just in the water discharge stage, and the water jet from the water outlet pipe directly sprays onto the inverted hat structure of the support bridge, forming an upward recoil force, which intelligently plays a buffering role, protecting the laminated buffer pad and the structure body. The whole process realizes the deep cooperation and closed-loop operation of the four functions of power generation, self-adaptive cooling, cleaning enhancement and impact buffering under the drive of a single wave.

[0016] Through the above settings and processes, the device has the following beneficial effects: By connecting the upper section of the middle column to the linear generator and the lower section to the piston head, the wave mechanical energy is allocated to power generation and drive seawater pumping at the same time and from the same movement source; the pumped seawater flows through the generator cabin wall through the flow guide groove to form active cooling, and the cooling flow is synchronously self-adaptively increased or decreased with the wave intensity (i.e. the power generation power and the heat generation), which fundamentally solves the risk of overheating of the power generation unit in the sealed cabin; The discharged seawater after heat dissipation is guided to the outer wall of the sealed cabin to pre-soften the biological attachments, which significantly improves the cleaning efficiency of the subsequent scraper directly driven by the buoy movement; the high-pressure jet is precisely guided to the inverted hat structure that moves downward with the buoy, and only at the moment when the wave impact risk is the highest, the recoil buffer is automatically formed, intelligently protecting the structure and reducing mechanical wear; All the above maintenance functions (heat dissipation, cleaning, and buffering) are directly derived from and strictly synchronized with the main movement stroke of power generation, without additional energy input or independent control system, which expands the utilization of wave energy from single power generation to all-around device self-maintenance, greatly improving the reliability, durability and overall energy efficiency of the device working in harsh marine environments. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the installation position structure of the top support bridge and the inverted hat of the present application; Figure 3 This is a schematic diagram of the overall structure of the oscillating float and housing of the present invention; Figure 4 This is a schematic diagram showing the internal cross-section of the sealed chamber and the installation position of the dynamic sealing layer of the present invention; Figure 5 This is a schematic diagram of the connection position between the central column and the piston head in this invention; Figure 6 This is a schematic diagram of the installation distribution of the water inlet pipe according to the present invention; Figure 7 This is a schematic diagram showing the connection positions of the inlet pipe, outlet pipe, and one-way valve of the present invention. Figure 8 This is a schematic diagram of the cross-sectional structure of the casing and oscillating float of the present invention.

[0018] In the diagram: 1. Sealed chamber; 2. Shell; 3. Oscillating float; 4. Scraper ring one; 5. Support bridge; 6. Antenna; 7. Top rod; 8. Stacked buffer pad; 9. Linear generator; 10. Cavity; 11. Central column; 12. Piston head; 13. Guide channel; 14. Dynamic sealing layer; 15. Inlet pipe; 16. Outlet pipe; 17. Filter plug; 18. One-way valve one; 19. One-way valve two; 20. Slanted cap; 21. Combination ring; 22. Scraper ring two. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, 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 invention and for 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, 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 invention based on the specific circumstances.

[0022] Please see Figures 1-8 In this embodiment, a marine energy utilization device includes a sealed chamber 1 and a linear generator 9 for converting wave-generated energy to generate electricity, as well as a housing 2 and an oscillating float 3 for floating up and down under the action of waves and driving the linear generator 9. A cavity 10 is opened inside the sealed chamber 1, and a central column 11 is inserted in the middle of the cavity 10 to follow the oscillating float 3 to achieve up-and-down reciprocating motion and drive the linear generator 9. A piston head 12 is set at the bottom of the central column 11. When the central column 11 follows the oscillating float 3 up and down reciprocating motion, the piston head 12 at its end also moves up and down in the cavity 10. A water inlet pipe 15 and a water outlet pipe 16 are respectively set at the bottom and top of the sealed chamber 1, and a guide channel 13 is opened inside the sealed chamber 1. In this way, the seawater drawn into the cavity 10 and the guide channel 13 through the piston head 12 can provide additional active cooling for the space where the linear generator 9 is placed, avoiding the situation where the continuously operating linear generator 9 is damaged due to heat accumulation in a closed and dry environment.

[0023] Both ends of the cavity 10 are connected to the bottom of the guide channel 13, and the guide channel 13 extends to both sides of the wall of the linear generator 9 (e.g., Figure 4 As shown in the figure, the introduced seawater can achieve efficient heat exchange and remove heat from the tank walls to reduce the internal temperature of the linear generator 9.

[0024] Since the upper section of the central column 11 is used to drive the linear generator 9, while the lower section is connected to the piston head 12 for pumping seawater, a dynamic sealing layer 14 is provided at the position where the cavity 10 is connected at the bottom of the linear generator 9 to ensure reliable sealing of the internal space of the linear generator 9. The dynamic sealing layer 14 employs a mature dynamic sealing technology solution known in the art. Specifically, its sealing structure is designed as a multi-level protection system: the core lies in the use of specialized composite sealing rings such as Step seals or Glyd rings. These sealing elements are composed of wear-resistant PTFE slip rings and elastic rubber O-rings, specifically designed for high and low speed reciprocating motion, effectively sealing seawater media; at the same time, this structure allows the sealing pair to self-align within a certain range to compensate for possible eccentricity and tilting during long shaft operation, reducing uneven wear. This series of technologies belongs to the prior art, and its specific material selection, groove dimensions, and system integration are common knowledge in the field of sealing engineering; its structural details will not be elaborated further below.

[0025] To ensure that seawater is directed into the two guide channels 13 and reaches a sufficient height (at the wall of the linear generator 9), and to facilitate the smooth discharge of the heat-carrying seawater, one-way valve 18 and one-way valve 19 are respectively installed inside the inlet pipe 15 and the outlet pipe 16. One-way valve 18 controls seawater to only enter and not exit when the piston head 12 draws seawater, while one-way valve 19 only exits and does not enter. The specific operating mode and steps are as follows: The central column 11 and piston head 12 move synchronously with the reciprocating motion of the casing 2 and the oscillating float 3. The oscillating float 3 floats on the sea surface and is affected by the waves. When the central column 11 drives the piston head 12 to move upward in the cavity 10, it generates a suction force and draws seawater into the cavity 10 through the water inlet pipe 15. When the central column 11 drives the piston head 12 to press down, due to the action of the one-way valve 18, the seawater cannot flow back into the sea through the water inlet pipe 15. Instead, it enters the two side guide channels 13 under the pressure of the piston head 12 and rises continuously until it passes through the wall of the linear generator 9 to remove heat and is then discharged from the water outlet pipe 16. Through the above process, the central column 11 can simultaneously drive the linear generator 9 to generate electricity and complete the flow and circulation of seawater, as well as achieve active heat dissipation.

[0026] A filter plug 17 is installed at the end of the inlet pipe 15 to prevent seawater impurities from entering and causing sedimentation and blockage (e.g., Figure 7 (As shown).

[0027] It should be noted that the linear generator 9 is based on the oscillating float type 3 wave energy generation technology, which is a well-known existing technology in the field of marine energy utilization. Its basic working principle is as follows: the float (i.e., the oscillating body) reciprocates with the waves, driving the connected linear generator 9, thereby converting the mechanical energy of the waves into electrical energy. The overall structure, energy capture, and conversion principle of this technology are common knowledge in the field; therefore, its basic structure and working process will not be elaborated upon further below.

[0028] A scraper ring 4 is provided on the inner side of the casing 2, and a scraper ring 22 is provided on the bottom of the casing 2. When the casing 2 reciprocates under the drive of the oscillating float 3, the outer surface of the sealed chamber 1 can be scraped and cleaned by the scraper ring 4 and the scraper ring 22, thereby preventing marine organisms such as barnacles from parasitizing.

[0029] The scraper ring 14 adopts a three-layer partition (such as...) Figure 8 As shown), and thus improve the scraping effect, the scraping ring 22 is composed of a multi-layer composite ring structure. This setting allows the short up and down stroke driven by the waves to cover most of the space outside the sealed chamber 1 as much as possible through segmented scraping.

[0030] Support bridges 5 are provided on both sides of the casing 2, arching upwards, and a top rod 7 is provided in the middle to limit the radial reciprocating movement of the casing 2 and the oscillating float 3. The top rod 7 is inserted into the interior of the sealed chamber 1, and a stacked buffer pad 8 is sleeved on the outside of the top rod 7. The stacked buffer pad 8 can prevent the support bridges 5 from directly impacting the top of the sealed chamber 1.

[0031] Due to the unpredictable fluctuations of sea waves, the oscillating float 3 will experience significant vertical displacement when encountering large waves. To prevent the support bridge 5 from directly colliding with the sealed chamber 1, a slanted cap 20 is installed at the position of the tilting rod of the support bridge 5. The top of the slanted cap 20 is equipped with a cover plate (e.g., Figure 2 As shown), an inner groove is opened on its inner side. Thus, when the seawater inside the sealed chamber 1 is discharged, the seawater is concentrated and ejected from the outlet pipe 16 under the pressure of the piston head 12. The ejected water will spray onto the inverted structure constructed by the slanted cap 20. Through the contact of the jet, the support bridge 5 can actively reduce the impact when it moves down with the oscillating float 3, thereby further reducing the contact force between the sealed chamber 1 and the support bridge 5, and also reducing the wear of the stacked buffer pad 8.

[0032] It should be noted that when seawater is discharged from the outlet pipe 16, the central column 11 and piston head 12 are in a downward pressure state, which means that the support bridge 5 and the oscillating float 3 are also in a downward position. Therefore, when seawater is discharged through the outlet pipe 16, the distance between the support bridge 5 and the top of the sealed chamber 1 is just brought closer, and the jet can minimize the impact that the support bridge 5 may cause. If the waves are small, the support bridge 5 and the oscillating float 3 move up and down for a short distance. At this time, the outlet pipe 16 is far away from the support bridge 5, so the impact of the jet is reduced. In this way, the jet of drainage will not have a negative impact on the device that moves normally with the waves. It will only intervene in the movement when the waves are large and the movement is too large.

[0033] A collector ring 21 is also installed on the inner side of the support bridge 5 (e.g., Figure 2As shown), the manifold ring 21 is used to make the water jet from the outlet pipe 16 evenly spread on the outer wall of the sealed chamber 1, thereby achieving the effect of pre-softening the attached material and improving the scraping effect of the scraper ring 4.

[0034] In this embodiment, the wave-driven oscillating float 3 moves up and down, causing the rigidly connected shell 2 and the central column 11 that penetrates the sealed chamber 1 to reciprocate synchronously. The upper section of the central column 11 directly drives the linear generator 9 to generate electricity, completing the core energy conversion. At the same time, the piston head 12 at the lower end of the central column 11 pumps within the cavity 10: when the piston head 12 moves upward, it draws in cold seawater through the filter plug 17 at the end of the inlet pipe 15, at which point the one-way valve 18 opens. When the piston head 12 presses down, the one-way valve 18 closes, and the seawater is pressurized and pumped into the guide channels 13 on both sides inside the sealed chamber 1, and flows upward along the channels through the chamber wall of the linear generator 9 for active cooling. The heated seawater pushes open the one-way valve 29 and is discharged from the outlet pipe 16. Part of the discharged water flows evenly onto the outer wall of the sealed chamber 1 through the confluence ring 21 inside the support bridge 5, pre-softening the biological attachments, thereby enhancing the cleaning effect of the scraper ring 4 and scraper ring 22 fixed on the shell 2 during follow-up scraping. Specifically, when encountering large waves and the support bridge 5 is about to be impacted as it moves significantly downward with the float, the piston head 12 is precisely in the downward drainage phase. The water jet from the outlet pipe 16 directly sprays onto the inverted structure of the inclined cap 20 of the support bridge 5, forming an upward recoil force. This intelligently acts as a buffer, protecting the laminated buffer pad 8 and the main structure. The entire process achieves deep synergy and closed-loop operation of the four major functions of power generation, adaptive cooling, cleaning enhancement, and impact buffering under a single wave drive.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A marine energy utilization device, comprising a sealed chamber (1) and a linear generator (9) for converting wave-generated energy to generate electricity, and a casing (2) and an oscillating float (3) for floating up and down under the action of waves and driving the linear generator (9), characterized in that: The sealed chamber (1) has an internal cavity (10). A central column (11) is inserted in the middle of the cavity (10) to follow the oscillating float (3) to achieve up-and-down reciprocating motion and drive the linear generator (9). A piston head (12) is provided at the bottom of the central column (11). When the central column (11) follows the oscillating float (3) to move up and down, the piston head (12) at its end will also move up and down in the cavity (10). A water inlet pipe (15) and a water outlet pipe (16) are provided at the bottom and top of the sealed chamber (1), respectively. A guide channel (13) is provided inside the sealed chamber (1).

2. The marine energy utilization device according to claim 1, characterized in that: The two ends of the cavity (10) are connected to the bottom of the inside of the guide channel (13), and the guide channel (13) extends to both sides of the wall of the linear generator (9).

3. The marine energy utilization device according to claim 1, characterized in that: The bottom connecting cavity (10) of the linear generator (9) is provided with a dynamic sealing layer (14) to ensure that the working environment of the linear generator (9) is dry.

4. The marine energy utilization device according to claim 1, characterized in that: The inlet pipe (15) and outlet pipe (16) are respectively equipped with one-way valve one (18) and one-way valve two (19). The one-way valve one (18) controls the seawater to only enter and not exit when the piston head (12) draws seawater, while the one-way valve two (19) only exits and does not enter.

5. A marine energy utilization device according to claim 4, characterized in that: The end of the water inlet pipe (15) is provided with a filter plug (17) to prevent seawater impurities from entering and causing sediment blockage.

6. A marine energy utilization device according to claim 1, characterized in that: The inner side of the casing (2) is provided with a scraper ring 1 (4), and the bottom of the casing (2) is provided with a scraper ring 2 (22). When the casing (2) moves back and forth under the drive of the oscillating float (3), the scraper ring 1 (4) and the scraper ring 2 (22) provide a scraping and cleaning effect on the exterior of the sealed chamber (1).

7. A marine energy utilization device according to claim 6, characterized in that: The scraper ring one (4) is made of three-layer partition, while the scraper ring two (22) is made of a multi-layer composite ring structure, so that the short vertical stroke driven by the waves can cover most of the space outside the sealed chamber (1) as much as possible through the segmented scraping method.

8. A marine energy utilization device according to claim 1, characterized in that: The shell (2) is provided with support bridges (5) arching upwards on both sides, and a top rod (7) is provided in the middle for radial reciprocating limit of the shell (2) and the oscillating float (3). The top rod (7) is inserted into the interior of the sealed chamber (1), and a stacked buffer pad (8) is provided on the outside to prevent the support bridge (5) from directly hitting the top of the sealed chamber (1).

9. A marine energy utilization device according to claim 8, characterized in that: The support bridge (5) is provided with a slanted cap (20) at the position of the inclined rod. The top of the slanted cap (20) is provided with a cover plate and an inner groove is opened on its inner side. When the seawater is concentrated and ejected from the outlet pipe (16) under the pressure of the piston head (12), the ejected water will spray onto the inverted structure constructed by the slanted cap (20). Through the contact of the jet, the support bridge (5) can actively reduce the impact when it moves down with the oscillating float (3).

10. A marine energy utilization device according to claim 9, characterized in that: The inner side of the support bridge (5) is also provided with a ring (21) to make the water flow sprayed from the water outlet pipe (16) evenly spread on the outer wall of the sealed chamber (1), thereby achieving the effect of pre-softening the attached material and improving the scraping effect of the scraping ring (4).

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