Pure water hydraulic cylinder limiting and self-locking system for wave-absorbing floating body of wave energy device
By introducing a pure water hydraulic cylinder limit self-locking system into the wave energy device, the problem of damage caused by energy capture overload and excessive floating body movement under extreme sea conditions has been solved, realizing automatic limit protection and ensuring the safe operation of the device in harsh environments.
Patent Information
- Application Number
- CN202511515197.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-01-13
AI Technical Summary
Wave energy devices are prone to structural damage under extreme sea conditions due to energy capture overload and excessive floating body movement. Existing technologies are insufficient to effectively protect the devices under extreme sea conditions.
The system employs a pure water hydraulic cylinder limit self-locking system, which uses a sealing plate and plugging hole structure inside the pure water hydraulic cylinder to forcibly lock the wave-absorbing float under extreme sea conditions, limiting its range of motion and preventing collision damage.
It achieves automatic limit protection under extreme sea conditions, avoids damage to the device, and ensures the device's survival safety in harsh environments.
Smart Images
Figure CN121322280A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of wave energy generation, in particular to a pure water hydraulic cylinder limiting and self-locking system of a wave energy device wave-absorbing float. BACKGROUND
[0002] The ocean accounts for more than two-thirds of the earth's area, and wave energy is a renewable energy source that is ubiquitous and abundant in the ocean. In recent years, human exploration of ocean renewable energy has continued to deepen, and ocean wave energy technology has been rapidly developing. Currently, many floating wave energy devices at home and abroad have realized power generation and can operate stably in actual sea conditions. With the continuous development of ocean development, wave energy devices are developing towards long-term stable operation in the deep sea.
[0003] Affected by the monsoon belt environment, the coastal environment conditions are complex and harsh, and typhoons occur frequently, with an average of more than 25% of the number of typhoon invasions in the northern hemisphere each year. Under extreme sea conditions, the motion of the wave energy device increases significantly, causing wave energy device energy capture overload and float motion over-limiting. The former is prone to cause the key components of the energy capture system to exceed the design load value, thereby causing structural damage in the system, and the latter is prone to cause the motion collision of the wave energy device multi-float, thereby causing external structural damage. The above factors have brought great difficulties and challenges to the self-sustaining design and protection of the wave energy device under extreme sea conditions. SUMMARY
[0004] In view of the problems in the prior art, the pure water hydraulic cylinder limiting and self-locking system of the wave energy device wave-absorbing float provided by the present application can forcibly lock the wave-absorbing float under extreme conditions, avoiding the wave-absorbing float from continuing to expand the motion amplitude, thereby causing the wave-absorbing float to collide and be damaged.
[0005] To achieve the above-mentioned purpose, the present application can adopt the following technical solutions:
[0006] The pure water hydraulic cylinder limiting and self-locking system of the wave energy device wave-absorbing float provided by the present application comprises:
[0007] A base float;
[0008] A wave-absorbing float arranged above the base float;
[0009] A pure water hydraulic cylinder limiting and self-locking device arranged between the base float and the wave-absorbing float, the pure water hydraulic cylinder limiting and self-locking device being used to limit the up-down motion amplitude of the wave-absorbing float.
[0010] As described above, the wave energy device's wave-absorbing float's pure water hydraulic cylinder limit self-locking system further includes a pure water hydraulic cylinder. The pure water hydraulic cylinder contains a pure water hydraulic rigid sealing plate for sealing. A pure water hydraulic rod is mounted on the pure water hydraulic rigid sealing plate. The pure water hydraulic cylinder is connected to the wave-absorbing float. The pure water hydraulic cylinder has a first through hole. A spring pressure plate is connected above the first through hole via a spring. A screw is mounted on the spring pressure plate. One end of the screw extends into the first through hole. A plug hole adapted to the first through hole is mounted on the screw. The plug hole is located inside the pure water hydraulic cylinder. A disc is mounted at the bottom of the screw.
[0011] As described above, in the wave energy device's wave-absorbing float pure water hydraulic cylinder limit self-locking system, a second through hole is further provided at the lower part of the pure water hydraulic cylinder.
[0012] As described above, in the wave energy device's wave-absorbing float pure water hydraulic cylinder limit self-locking system, the first through hole has a structure that is narrow at the top and wide at the bottom, and the plug hole is trapezoidal in shape.
[0013] As mentioned above, the wave energy device wave-absorbing float pure water hydraulic cylinder limit self-locking system further has three operating states according to different sea conditions. The three operating states are working state, transition state and protection state.
[0014] As described above, in the wave energy device's wave-absorbing float pure water hydraulic cylinder limit self-locking system, when the operating state is the working state, the pure water hydraulic rigid sealing plate is not in contact with the disc, and the plug hole is not blocking the first through hole.
[0015] As described above, in the wave energy device's wave-absorbing float pure water hydraulic cylinder limit self-locking system, when the operating state is a transition state, the pure water hydraulic rigid sealing plate contacts the disc, but the plug hole does not block the first through hole.
[0016] As described above, in the wave energy device's wave-absorbing float pure water hydraulic cylinder limit self-locking system, when the operating state is the protection state, the pure water hydraulic rigid sealing plate contacts the disc, and the plug hole blocks the first through hole.
[0017] The wave energy device's wave-absorbing float pure water hydraulic cylinder limit self-locking system, as described above, further includes a hydraulic energy conversion device, which is installed on the base float and is used to convert wave energy into hydraulic energy.
[0018] Compared with the prior art, the advantages of this invention are as follows:
[0019] The pure water hydraulic cylinder limit self-locking device can adjust and limit the movement amplitude of the wave absorber float, avoiding damage to the entire wave energy device system or impact damage caused by the large movement of the wave absorber float beyond the design limit under extreme sea conditions. Thus, it can automatically complete the limit self-locking of the wave absorber float in unattended operation, ensuring the survival safety of the wave energy device under extreme sea conditions. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the system structure in an embodiment of the present invention;
[0022] Figure 2 This is an enlarged view of the structure of the pure water hydraulic cylinder limit self-locking device in an embodiment of the present invention;
[0023] Figure 3 This is a schematic diagram of the working state of the pure water hydraulic cylinder limit self-locking device in an embodiment of the present invention;
[0024] Figure 4 This is a schematic diagram of the transition state of the pure water hydraulic cylinder limit self-locking device in an embodiment of the present invention;
[0025] Figure 5 This is a schematic diagram of the protection state of the pure water hydraulic cylinder limit self-locking device in an embodiment of the present invention;
[0026] In the diagram, 1. Matrix float; 2. Wave-absorbing float; 3. Pure water hydraulic cylinder limit self-locking device; 4. Hydraulic energy conversion device; 5. Pure water hydraulic cylinder; 6. Pure water hydraulic rigid sealing plate; 7. Pure water hydraulic rod; 8. First through hole; 9. Spring pressure plate; 10. Spring; 11. Screw; 12. Plug hole; 13. Disc; 14. Second through hole. Detailed Implementation
[0027] 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.
[0028] Example:
[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, in the embodiments of this invention are intended to cover non-exclusive inclusion; for example, a process, method, component, product, or device that includes a series of steps or means is not necessarily limited to those steps or means explicitly listed, but may include other steps or means not explicitly listed or inherent to such processes, methods, products, or devices.
[0030] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 the present invention 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 the present invention.
[0031] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0033] This invention provides a limit self-locking system for a pure water hydraulic cylinder of a wave energy device absorbing float. (See also...) Figure 1 and Figure 2 It includes a base float 1, a wave-absorbing float 2, and a pure water hydraulic cylinder limiting self-locking device 3. The wave-absorbing float 3 is located above the base float 1, and the pure water hydraulic cylinder limiting self-locking device 3 is located between the base float 1 and the wave-absorbing float 2. The pure water hydraulic cylinder limiting self-locking device 3 is used to limit the vertical movement range of the wave-absorbing float 2.
[0034] The pure water hydraulic cylinder limit self-locking device 3 includes a pure water hydraulic cylinder 5, a pure water hydraulic rigid sealing plate 6 for sealing is provided inside the pure water hydraulic cylinder 5, a pure water hydraulic rod 7 is provided on the pure water hydraulic rigid sealing plate 6, the pure water hydraulic cylinder 5 is connected to the wave-absorbing float 2, the pure water hydraulic cylinder 5 has a first through hole 8, a spring pressure plate 9 is connected above the first through hole 8 by a spring 10, a screw 11 is provided on the spring pressure plate 9, one end of the screw 11 extends into the first through hole 8, a plug hole 12 adapted to the first through hole 8 is provided on the screw 11, the plug hole 12 is located inside the pure water hydraulic cylinder 5, and a disc 13 is provided at the bottom of the screw 11.
[0035] As an optional implementation, in some embodiments, a hydraulic energy conversion device 4 is also included. The hydraulic energy conversion device 4 is disposed on the base float 1 and is used to convert wave energy into hydraulic energy.
[0036] In the above embodiments, a second through hole 14 is further provided at the lower part of the pure water hydraulic cylinder 5.
[0037] The working principle of this system is as follows:
[0038] See Figure 3 , Figure 4 and Figure 5The heave and sway of the wave-absorbing float 2 in the waves causes the pure water hydraulic rod 7 to move up and down. During the downward movement of the pure water hydraulic rod 7, the trapezoidal plug hole 12 remains open, allowing water to flow in automatically. The lower part of the pure water hydraulic cylinder 5 has a second through hole 14, from which water can also flow freely. When the pure water hydraulic rod 7 moves upward, the wave energy device remains in operation until the pure water hydraulic rigid sealing plate 6 contacts the bottom disk 13 of the screw 11. In extreme sea conditions, if the wave-absorbing float 2 moves significantly beyond the preset value, it will cause the pure water hydraulic rod 7 to move significantly upward, causing the pure water hydraulic rigid sealing plate 6 to contact the bottom disk 13 of the screw 11 and drive the trapezoidal plug hole 12 to move upward and block the first through hole 8. At this time, the pure water hydraulic cylinder 5 is filled with incompressible water, which will prevent the pure water hydraulic rod 7 from continuing to rise, forcing the wave-absorbing float 2 of the wave energy device to stop moving upward, thus achieving a limit protection function. In addition, the length of the wave-absorbing float 2 can be adjusted by rotating the screw 11 to achieve the purpose of adjusting the limit value. When the wave decreases, the wave-absorbing float 2 moves downward, and the pure water hydraulic rigid sealing plate 6 disengages from the disc 13 at the bottom of the screw 11. The disc 13 at the bottom of the screw 11 moves downward under the action of the spring 10. At this time, the trapezoidal plug hole 12 is in the open state, and water can flow in and out automatically. The wave energy device returns to the normal working state.
[0039] Therefore, the present invention utilizes a pure water hydraulic cylinder limit self-locking device 3 to adjust and limit the movement amplitude of the wave-absorbing float 2, preventing the wave-absorbing float 2 from moving beyond the design limit under extreme sea conditions, which could lead to damage or impact damage to the entire wave energy device system. This allows for automatic limit self-locking of the wave-absorbing float 2 in unattended conditions, ensuring the survival safety of the wave energy device under extreme sea conditions.
[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0041] The above embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made based on the essence of the content of the present invention should be covered within the scope of protection of the present invention.
Claims
1. A self-locking system for limiting the pure water hydraulic cylinder of a wave energy device's wave-absorbing float, characterized in that, include: base floating body; A wave-absorbing float is disposed above the base float; A pure water hydraulic cylinder limiting self-locking device is disposed between the base float and the wave-absorbing float. The pure water hydraulic cylinder limiting self-locking device is used to limit the vertical movement range of the wave-absorbing float.
2. The wave energy device wave-absorbing float pure water hydraulic cylinder limit self-locking system according to claim 1, characterized in that, The pure water hydraulic cylinder limiting self-locking device includes a pure water hydraulic cylinder, a pure water hydraulic rigid sealing plate for sealing is provided inside the pure water hydraulic cylinder, a pure water hydraulic rod is provided on the pure water hydraulic rigid sealing plate, the pure water hydraulic cylinder is connected to the wave-absorbing float, the pure water hydraulic cylinder has a first through hole, a spring pressure plate is connected above the first through hole by a spring, a screw is provided on the spring pressure plate, one end of the screw extends into the first through hole, a plug hole adapted to the first through hole is provided on the screw, the plug hole is located inside the pure water hydraulic cylinder, and a disc is provided at the bottom of the screw.
3. The wave energy device wave-absorbing float pure water hydraulic cylinder limit self-locking system according to claim 2, characterized in that, The lower part of the pure water hydraulic cylinder is provided with a second through hole.
4. The wave energy device wave-absorbing float pure water hydraulic cylinder limit self-locking system according to claim 2, characterized in that, The first through hole has a narrow upper part and a wide lower part, and the plug hole is trapezoidal in shape.
5. The wave energy device wave-absorbing float pure water hydraulic cylinder limit self-locking system according to claim 2, characterized in that, The pure water hydraulic cylinder limit self-locking device has three operating states according to different sea conditions: working state, transition state, and protection state.
6. The wave energy device wave-absorbing float pure water hydraulic cylinder limit self-locking system according to claim 4, characterized in that, When the operating state is the working state, the pure water hydraulic rigid sealing plate is not in contact with the disk, and the plug hole is not blocking the first through hole.
7. The wave energy device wave-absorbing float pure water hydraulic cylinder limit self-locking system according to claim 4, characterized in that, When the operating state is in the transition state, the pure water hydraulic rigid sealing plate is in contact with the disk, but the plug hole does not block the first through hole.
8. The wave energy device wave-absorbing float pure water hydraulic cylinder limit self-locking system according to claim 4, characterized in that, When the operating state is the protection state, the pure water hydraulic rigid sealing plate contacts the disk, and the plug hole blocks the first through hole.
9. The wave energy device wave-absorbing float pure water hydraulic cylinder limit self-locking system according to claim 1, characterized in that, It also includes a hydraulic energy conversion device, which is installed on the base float and is used to convert wave energy into hydraulic energy.