CN220015386U

CN220015386U - Efficient wave energy capturing device distributed in moderate water depth self-adaptive sea condition

Info

Publication number: CN220015386U
Application number: CN202321101203.0U
Authority: CN
Inventors: 张茴栋; 王彤; 许聪; 史宏达
Original assignee: Ocean University of China
Current assignee: Ocean University of China
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-11-14
Anticipated expiration: 2033-05-09

Abstract

The utility model relates to the technical field of wave energy power generation devices, in particular to a high-efficiency wave energy capturing device distributed in a medium-water-depth self-adaptive sea state, which comprises a platform which is arranged in the sea and is used for improving wave energy density by a shallow water effect, wherein the middle of the platform is provided with a stand column with the upper end extending out of the sea surface, the upper end part of the stand column is provided with an energy output system, four sector floats which float on the sea surface and are used for being connected with the energy output system are uniformly distributed outside the stand column along the circumferential direction of the stand column, the floats are arranged on the stand column in a lifting manner through a guide rail assembly according to the sea state grade, connectors are arranged between adjacent floats, different connection combinations among the floats are implemented according to the cycle size and the incoming wave direction of sea waves, irregular waves in different sea states are automatically adapted by changing the heave inherent movement cycle of a float module, and meanwhile, the phase coupling technology is overlapped, so that the energy obtaining state of the floats is always maximized.

Description

Efficient wave energy capturing device distributed in moderate water depth self-adaptive sea condition

Technical Field

The utility model relates to the technical field of wave energy power generation devices, in particular to a high-efficiency wave energy capturing device distributed in a medium-water-depth self-adaptive sea state.

Background

At present, development of ocean clean energy is imperative, according to the distribution characteristics of wave resources in China, a sea area with medium water depth is a main area for wave energy development in the future, the ocean clean energy can be matched with a floating fan, development cost is reduced through sharing a mooring system and a bottom platform, and one of the more suitable wave energy devices is an oscillating buoy type. The oscillating buoy type wave energy device converts wave energy into mechanical energy which is possessed by the motion of the buoy through the motion of the upper buoy along with the wave surface, and then the energy acquisition PTO system is utilized to convert the energy captured by the buoy into electric energy.

However, the natural period of the motion of the floater is fixed due to the fixed shape, quality and other attributes, so that the floater is difficult to adapt to irregular waves which change at any time in a real environment, the energy obtaining characteristic of the floater is obviously reduced, and the commercial development difficulty of wave energy resources is greatly increased. In order to maximize wave energy acquisition, the motion inherent period of the heave point absorption device must be dynamically adjusted to be always close to the spectrum peak period of irregular waves, the response amplitude of the device is improved by realizing resonance motion, meanwhile, aiming at the problem that the wave energy density of the peripheral sea area of China is generally low in most time, the wave energy must be focused in a certain mode, the capturing efficiency of the wave energy is respectively improved from the two aspects of the external environment and the internal attribute, the energy acquisition is maximized, and the development economic cost is reduced.

Disclosure of Invention

Aiming at the defect that the inherent period of a floater cannot be matched with the peak period of a wave in real time, and the wave energy density of the wave around the floater is generally low, so that the floater can not realize maximization, the utility model provides the efficient wave energy capturing device distributed in the moderate water depth self-adaptive sea condition, the top of the efficient wave energy capturing device can be further expanded in function, and the multifunctional complementation is realized by additionally installing a fan.

In order to solve the technical problems, the utility model is solved by the following technical scheme.

The utility model provides a cloth is put in high-efficient wave energy capture device of medium depth self-adaptation sea state, its includes locates the available shallow water effect of specific depth in sea and promotes wave energy density and be circular platform, be equipped with the damping plate of hoisting device stability around the platform, be equipped with the stand that the upper end stretches out the sea in the middle of the platform, the upper end department of stand is equipped with energy output system, a plurality of fan-shaped floats that float on the sea and be used for linking to each other with energy output system have evenly been laid along its circumference outward to the stand, the float is located on the stand through guide rail assembly liftable according to sea state, is equipped with the connector between adjacent floats, and the connector is used for realizing the different connection combination between the float according to the spectral peak cycle size and the main direction of coming the wave of irregular wave.

Preferably, the size of the circular platform relative to the floater and the distance between the circular platform and the floater in the vertical direction meet a certain proportional relation, so that the shallow water effect of the incident wave is realized, and the wave energy density at the periphery of the floater is improved.

Preferably, the platform is provided with heave damping plates for improved stability.

Preferably, the floats are arranged in an arc ring shape and four floats are arranged along the circumference of the upright post, when the wave period of the sea wave is a small period wave, the four floats are not connected, when the wave period of the sea wave is a medium period wave, two adjacent floats of the four floats are connected through a connector, the specific combination mode depends on the actual wave direction and period, and when the wave period of the sea wave is a large period wave, the four floats are sequentially connected through the connector.

Preferably, the float and the circular platform are in phase coupling, so that the energy obtaining efficiency of the float can be improved, and the heave response of the circular platform can be reduced.

Preferably, the connector comprises a connecting rod which is telescopically arranged on one of the adjacent floats and a jack which is arranged on the other of the adjacent floats, and the connecting rod extends into the jack for realizing connection between the adjacent floats.

Preferably, a ballast tank for storing water is provided in the float.

Preferably, the platform is provided with a ballast connector for connecting to the float.

Preferably, the guide rail assembly comprises a slide rail axially arranged along the upright post and a slide block which is arranged on the floater and matched with the slide rail.

Preferably, the platform is floating in the sea by means of a diagonal 45 ° taut mooring line.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through the arrangement of the connector, the connector can realize the connection between adjacent floaters, so that the inherent movement period of the connected floaters can be changed, and the connector is automatically adapted to the spectrum peak period and the main wave direction under different sea conditions, so that the energy obtaining of the floaters is maximized.

2. According to the utility model, the circular platform immersed in the seawater at a specific depth is additionally arranged and designed, the shallow water effect is utilized to realize focusing of wave energy in open water, the wave energy density around the heave floater is improved, and meanwhile, the relative heave motion of the floater is further increased by combining with the phase coupling technology of the motion device, so that the floater is promoted to acquire more wave energy.

3. According to the utility model, through the arrangement of the ballast tank and the ballast connector, seawater can enter the ballast tank to change the weight of the floater, so that the floater is submerged and can be fixed on the platform by being matched with the ballast connector, and the damage of the floater caused by extreme sea waves is avoided.

4. According to the utility model, the design of the upper upright post can be used for conveniently expanding, and a fan can be carried to capture wind energy when necessary, so that the power generation efficiency of the device is improved, and the commercial development cost of clean energy is reduced.

5. According to the utility model, the heave and swaying movements of the platform can be effectively restrained by the arrangement mode of the damping plates on the immersed platform, the stability of the platform is improved, and the phase coupling effect between the platform and the floater is enhanced.

Drawings

FIG. 1 is a schematic view of the structure of a wave energy capturing device in an embodiment installed on the sea floor.

FIG. 2 is a schematic diagram of the structure of a wave energy capturing device in an embodiment.

Fig. 3 is a schematic structural view of a sector-shaped float in the embodiment.

Fig. 4 is a schematic view of the structure of the float attached to the platform in extreme sea conditions in an embodiment.

FIG. 5 is a schematic diagram of the connection and combination of floats under different working conditions in the embodiment.

Fig. 6 is a schematic diagram of a mooring system arrangement in an embodiment.

The names of the parts indicated by the numerical references in the drawings are as follows:

100. a platform; 105. a damping plate; 110. a column; 120. a float; 130. a mooring line; 200. an energy output system; 210. a connector; 220. a ballast connector; 300. and a guide rail assembly.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples. It is to be understood that the examples are illustrative of the present utility model and are not intended to be limiting.

As shown in fig. 1 to 6, this embodiment provides a high-efficiency wave energy capturing device deployed in a sea with a medium water depth and self-adapting to sea conditions, which comprises a platform 100 disposed in the sea with a specific water depth, a column 110 with an upper end extending out of the sea surface is disposed in the middle of the platform 100, an energy output system 200 is disposed at an upper end of the column 110, a plurality of sector-shaped floats 120 capable of floating on the sea surface and connected to the energy output system 200 are uniformly disposed on the outer periphery of the column 110, the floats 120 are disposed on the column 110 in a liftable manner through a guide rail assembly 300, a connector 210 is disposed between adjacent floats 120, and the connector 210 is used for realizing connection between the adjacent floats 120 according to the peak period of the sea wave and the main direction of the sea wave.

In this embodiment, the wave energy capturing device is suitable for medium water depth, and is designed based on a floating foundation, so that when in actual use, waves at a specific water depth are propagated to the platform 100, the wave height of the waves is increased due to shallow water effect, the wave energy density is increased, and the amplitude of the vertical motion of the floater 120 pushed by the waves is obviously increased, so that the energy capturing of the floater 120 is improved;

in this embodiment, the platform 100 is circularly arranged, and the size of the circular platform 100 relative to the float 120 and the vertical distance therebetween satisfy a certain proportional relationship, so as to achieve the shallow water effect of the incident wave, and improve the wave energy density of the waves around the float 120.

Wherein, the platform 100 is a floating foundation platform, which floats in the sea through a mooring line 130, one end of the mooring line 130 is connected to the floating foundation platform, the other end is fixed on the sea bottom, and the floating of the platform 100 is preferably realized by matching with the buoyancy provided by the floating foundation platform;

in practical use, the heave damping plate 105 is disposed around the platform 100, wherein the mooring line 130 is disposed at an angle of 45 °, and the mooring line 130 is combined with the heave damping plate 105 to provide sufficient stability for the whole device;

in practical use, the upright post 110 provides the installation and fixation positions required by the movement guide rail of the floater 120, the upper part can be expanded with necessary functions according to practical needs, fan equipment is additionally arranged, meanwhile, wind energy of the sea area is acquired, the lower end of the fan equipment is connected to the platform 100, the phase coupling effect between the floater 120 and the platform 100 is realized, and the overall energy obtaining efficiency of the device is further improved; the energy output system 200 adopts a hydraulic energy storage type WEC power generation system, so that the energy output system can convert the energy captured by the floater 120 into electric energy, and the wave energy capturing device can effectively convert wave energy;

the guide rail assembly 300 is used for limiting the float 120 to heave along the vertical direction of the upright post 110, so that the float 120 can be driven by sea waves to lift along the upright post 110, the float 120 can convert wave energy into mechanical energy, and the mechanical energy of the float 120 can be converted into electric energy through the energy output system 200;

wherein, by the arrangement of the connector 210, the connector 210 can connect adjacent floats 120, so that the shape, quality and other attributes of the connected floats 120 are changed, and the inherent movement period of the floats 120 is changed, so that the inherent movement period of the floats 120 can be matched with the wave period under different sea conditions, and the energy capture device can be maximized;

in this embodiment, the rail assembly 300 includes a sliding rail disposed along the axial direction of the upright 110 and a sliding block disposed on the float 120 and matched with the sliding rail, which preferably realizes the heave motion of the float along the axial direction of the upright 110 through the matching of the sliding rail and the sliding block.

In this embodiment, as shown in fig. 5, the floats 120 are circular arc ring-shaped and are four along the circumference of the upright post 110, and when the wave period of the ocean wave is a small period wave, there is no connection between the four floats 120, so that the low-sea wave energy can be captured well; when the wave period of the ocean wave is a medium period wave, two adjacent floats 120 of the four floats 120 are connected through a connector 210, and the optimal combination is performed in a grouping mode according to the actual ocean conditions; when the wave period of the ocean wave is a large period wave, the four floats 120 are sequentially connected with each other through the connector 210.

In this embodiment, the connectors 210 connect adjacent floats 120 so that the natural motion cycle of the formed floats 120 can automatically adapt to the wave cycle under different sea conditions so as to maximize the energy capture of the formed floats;

in actual use, as shown in fig. 5 a, when the spectrum peak period of the sea wave is a small-period wave, the four floats 120 are not connected, so that the four floats 120 are not mutually restrained, the heave inherent period between each float 120 is smaller, the small-period wave can be better adapted, and various incoming wave directions can be simultaneously adapted; as shown in fig. 5 b and c, when the peak period of the ocean wave is a middle period wave, two adjacent floats 120 of the four floats 120 are connected through the connector 210, so that every two adjacent floats 120 of the four floats 120 are connected with each other, 2 semi-circular-ring-shaped floats are formed, and the heave natural period of the formed floats is further increased, so that the formed floats can be better adapted to the middle period ocean wave.

In practical use, the connection between two adjacent floats 120 can be realized according to the main direction of the sea wave and the amplitude, namely, when the amplitude is smaller, the connection mode of the transverse waves (the semi-circle diameter is perpendicular to the wave direction in fig. 5 b) is selected to optimize the energy obtaining effect of the floats, and when the amplitude is larger, the connection mode of the forward waves (the semi-circle diameter is parallel to the wave direction in fig. 5 c) is selected to better maximize the energy obtaining of the floats and effectively inhibit the pitching of the platform 100; as shown in fig. 5 d, when the peak period of the ocean wave is a large period wave, the four floats 120 are sequentially connected through the connector 210, so that the four floats 120 form a ring-shaped float, and the heave natural period of the formed float is increased, so that the formed float can be better adapted to the large period wave.

In this embodiment, the connector 210 includes a connecting rod telescopically disposed on one of the adjacent floats 120 and a socket disposed on the other of the adjacent floats 120, the connecting rod extending into the socket for connection between the adjacent floats 120.

In this embodiment, the connector 210 is preferably connected between adjacent floats 120 by the connection rod and the jack, and in practical use, the connection rod may be an electric telescopic rod, so that automatic connection between floats 120 is preferably realized.

In this embodiment, a ballast tank for storing water is provided in the float 120.

In this embodiment, the water inlet and outlet control system is installed in the ballast tank, and water is preferably injected into the ballast tank through the water inlet and outlet control system, so that the weight of the floats 120 is increased, and when the floats 120 are allowed to sink below the sea surface, and the connector 210 connects the four floats 120 into a ring-shaped float, the four floats can sink below the sea surface and be attached to the bottom platform 100, so that the gravity center of the device is reduced, damage to the floats 120 caused by super billows is preferably avoided, and the stability of the whole device and the viability in extreme sea conditions are improved.

In this embodiment, the platform 100 is provided with a ballast connector 220 for connecting to the float 120.

In this embodiment, the ballast connector 220 employs an electromagnetic chuck such that the float 120 is sunk to the upper portion of the platform 100 in actual use, and the ballast connector 220 serves to fix the float 120 to the platform 100, thereby facilitating actual use of the wave energy capturing device.

When the efficient wave energy capturing device distributed in the moderate water depth self-adaptive sea condition is specifically used, the connector 210 is controlled to realize connection between adjacent floats 120 according to the size of the spectrum peak period and the main direction of the irregular wave, so that the fixed period of the floats 120 along the heave motion of the upright posts 110 is changed, the fixed period is matched with the spectrum peak period of the sea wave, meanwhile, the wave energy density is lifted by depending on the immersed platform 100 at the bottom, and the energy obtaining of the floats 120 is maximized by utilizing a phase coupling method; meanwhile, when extreme sea waves occur, the water inlet and outlet control system controls water injection into the ballast tank, the weight of the floats 120 is increased to enable the floats to sink, and meanwhile, the ballast connector 220 works to fix the sunk floats 120 on the platform 100, so that damage to the floats 120 caused by the extreme sea waves is avoided preferably.

In summary, the foregoing description is only of the preferred embodiments of the present utility model, and all equivalent changes and modifications made in accordance with the claims should be construed to fall within the scope of the utility model.

Claims

1. The utility model provides a high-efficient wave energy capture device of laying in moderate water depth self-adaptation sea state which characterized in that: including locating platform (100) in the sea, be equipped with stand (110) that the upper end stretched out the sea in the middle of platform (100), the upper end department of stand (110) is equipped with energy output system (200), a plurality of floats on the sea and be used for with energy output system (200) continuous float (120) along its circumference outward, float (120) are located on stand (110) through guide rail assembly (300) liftable, are equipped with connector (210) between adjacent float (120), and connector (210) are used for realizing the connection between adjacent float (120) according to the wave cycle size and the direction of coming of wave.

2. A high efficiency wave energy capturing device deployed in moderate water depth adaptive sea conditions as defined in claim 1, wherein: the floats (120) are arranged in an arc ring shape, four floats are arranged along the circumference of the upright post (110), and when the wave period of the sea wave is a small period wave, the four floats (120) are not connected; when the wave period of the sea wave is a medium period wave, two adjacent floats (120) of the four floats (120) are connected through a connector (210), and the grouping mode depends on the incoming wave direction and the spectrum peak period; when the wave period of the sea wave is a large period wave, the four floats (120) are sequentially connected through the connector (210).

3. A high efficiency wave energy capturing device deployed in moderate water depth adaptive sea conditions as defined in claim 1, wherein: the connector (210) comprises a connecting rod which is telescopically arranged on one of the adjacent floats (120) and a jack which is arranged on the other of the adjacent floats (120), and the connecting rod extends into the jack and is used for realizing connection between the adjacent floats (120).

4. A high efficiency wave energy capturing device deployed in moderate water depth adaptive sea conditions as defined in claim 1, wherein: a ballast tank for storing water is arranged in the floater (120).

5. A high efficiency wave energy capturing device deployed in moderate water depth adaptive sea conditions as defined in claim 1, wherein: the platform (100) is provided with a ballast connector (220) for connecting to the float (120).

6. A high efficiency wave energy capturing device deployed in moderate water depth adaptive sea conditions as defined in claim 1, wherein: the guide rail assembly (300) comprises a sliding rail axially arranged along the upright post (110) and a sliding block which is arranged on the floater (120) and matched with the sliding rail.

7. A high efficiency wave energy capturing device deployed in moderate water depth adaptive sea conditions as defined in claim 1, wherein: the platform (100) floats in the sea through 45 ° diagonal tension mooring lines (130).

8. A high efficiency wave energy capturing device deployed in moderate water depth adaptive sea conditions as defined in claim 1, wherein: heave damping plates (105) used for improving stability of the platform (100) are arranged around the platform (100).

9. A high efficiency wave energy capturing device deployed in moderate water depth adaptive sea conditions as defined in claim 1, wherein: the upright post (110) can be expanded according to functions, and fan facilities are added above the upright post to realize multi-functional complementation.

10. A high efficiency wave energy capturing device deployed in moderate water depth adaptive sea conditions as defined in claim 1, wherein: the immersion of the platform (100) at a specific depth may increase the wave energy density around the float (120) by shallow water effects, while the heave motion of the float (120) may be further increased by a phase coupling mechanism between the two.