阅读说明：本技术 配有外置透空结构的浮式双气室振荡水柱波能发电装置 (Floating type double-air-chamber oscillating water column wave energy power generation device with external permeable structure ) 是由 宁德志 何耀华 王荣泉 罗伯特·迈恩 张崇伟 于 2021-01-25 设计创作，主要内容包括：本发明属于新能源技术利用领域,提供了一种配有外置透空结构的浮式双气室振荡水柱波能发电装置,包括透空结构,振荡水柱系统和锚泊固定系统。本发明将浮式双气室振荡水柱波能转换装置和透空结构有效结合,不仅能提高装置的能量转换效率、拓宽装置的有效频带宽度；同时透空结构也能对波浪尤其是短波进行一定的消能、降低装置受到的波浪荷载,提高装置的生存能力。(The invention belongs to the technical field of new energy utilization, and provides a floating type double-air-chamber oscillating water column wave energy power generation device with an external permeable structure. The floating double-air-chamber oscillating water column wave energy conversion device is effectively combined with the permeable structure, so that the energy conversion efficiency of the device can be improved, and the effective frequency bandwidth of the device can be widened; and meanwhile, the permeable structure can also carry out certain energy dissipation on waves, particularly short waves, reduce the wave load borne by the device and improve the survival capability of the device.)

1. A floating type double-air-chamber oscillating water column wave energy power generation device with an external permeable structure is characterized in that the floating type double-air-chamber oscillating water column wave energy power generation device with the external permeable structure comprises a permeable structure, a double-air-chamber oscillating water column system and an anchoring fixing system;

the hollow structure (1) is a circular cylinder structure, is fixed on the outer side of the outer circular cylinder (3), has the inner radius the same as the outer radius of the outer circular cylinder, is uniformly distributed with circular holes on the surface, and the size and the distribution density of the holes are determined according to the actual sea condition of a target sea area;

the double-air-chamber oscillating water column system mainly comprises an outer hemispherical ring body (2), an outer annular cylinder body (3), an inner annular cylinder body (4), an inner hemispherical ring body (5), an inner cylinder body (6), an outer air chamber (7), an inner air chamber (8), a cross-shaped supporting cross beam (9), a first air hole channel (11), a first turbine power generation system (12), a second air hole channel (13) and a second turbine power generation system (14); the outer air chamber (7) is a cavity formed by an outer hemispherical ring body (2), an outer annular cylinder body (3), an inner annular cylinder body (4) and an inner hemispherical ring body (5), and the outer annular cylinder body (3) is connected with the outer hemispherical ring body (2); the inner air chamber (8) is a cavity formed by an inner circular cylinder body (4), an inner hemispherical ring body (5) and an inner cylinder body (6), and the inner circular cylinder body (4) is connected with the inner hemispherical ring body (5); the top of the inner cylinder (6) is positioned in the inner air chamber (8) and is spaced from the inner hemispherical ring body (5) by a distance exceeding the water surface; the cross-shaped supporting cross beam (9) is fixed at the top of the inner cylinder (6) and is used for supporting and fixing the outer cylindrical ring body (3) and the inner cylindrical ring body (4); a first air hole channel (11) and a second air hole channel (13) are reserved at the top end of the outer hemispherical ring body (2), the two air hole channels respectively correspond to the inner air chamber (8) and the outer air chamber (7), the first turbine power generation system (12) is located in the first air hole channel (11), and the second turbine power generation system (14) is located in the second air hole channel (13);

the anchoring fixing system consists of a plurality of anchor chains (10), one end of each anchor chain (10) is connected with the inner cylinder (6), and the other end is fixed on the seabed.

Technical Field

The invention relates to a floating type double-air-chamber oscillating water column wave energy conversion device with an external permeable structure, and belongs to the technical field of new energy utilization.

Background

Vast ocean has abundant renewable energy sources, wave energy is used as one of the ocean energy renewable energy sources, the reserve is huge, the wave energy resources are developed and utilized, the problem of shortage of traditional fossil energy sources and the problem of environmental pollution caused by the use of the fossil energy sources can be effectively relieved, and therefore wave energy power generation has wide application prospects. The wave energy power generation device is mainly divided into an oscillating water column type, a wave-crossing type and an oscillating body type according to the working principle, wherein the oscillating water column type wave energy device is not easy to corrode because an air turbine of the oscillating water column type wave energy device is not directly contacted with seawater, and the device has the advantages of simple structure and high reliability and is widely researched and applied at present. Energy conversion from wave energy to electric energy generally needs to be carried out three times: the wave enters the air chamber to form an oscillating water column, so that the air in the air chamber is forced to form a reciprocating air flow at the air hole, the wave energy is converted into air kinetic energy, and the first conversion of the energy is completed; the airflow drives the air turbine to rotate, and the air kinetic energy is converted into mechanical energy of the turbine to finish the second conversion of the energy; finally, the turbine drives the generator to work, mechanical energy is converted into electric energy, and third conversion of the energy is completed.

Early oscillating water column wave energy power generation devices are mostly of shore-based fixed structures, and due to the fact that the wave energy density of near shore is relatively low, the power generation power of the devices is limited to a certain extent, and large-scale commercialization of the devices is not facilitated. The floating oscillating water column wave energy device can overcome the problems and can develop and utilize deep and open sea wave energy with richer wave energy resources. Oscillating water column wave energy devices require that the wave frequency be close to the device frequency, which is a significant energy conversion efficiency. Therefore, in order to improve the energy conversion efficiency of the device and widen the effective frequency bandwidth of the device, the oscillating water column wave energy device with a double-chamber structure is adopted in the invention.

The wave energy device needs to bear the action of various environmental loads such as waves, ocean currents, wind and the like when working, and the living environment is severe. Especially, under the action of short wave, the transmission capacity of the device is weak, so that large reflection can be generated in front of the device, the energy conversion efficiency of the device is low, large wave load is generated, and the safe operation of the device is threatened. The permeable structure has a good energy dissipation effect on waves, and is widely applied to ocean engineering structures needing wave dissipation. Therefore, the invention provides that the permeable structure is added around the double-air-chamber oscillating water column wave energy device, so that the energy conversion efficiency of the device can be improved, the effective frequency bandwidth of the device can be widened, certain energy dissipation can be performed on waves, particularly short waves, the wave load borne by the device can be reduced, and the survival capability of the device can be improved.

Disclosure of Invention

Aiming at the existing problems, the invention designs the floating double-air-chamber oscillating water column wave energy conversion device with the external permeable structure, and the double-air-chamber structure can capture waves with wider frequency and improve the power generation efficiency of the device; the external hollow structure can effectively reduce the wave load received by the conversion device, thereby improving the survival capability of the device.

The technical scheme of the invention is as follows:

a floating type double-air-chamber oscillating water column wave energy power generation device provided with an external permeable structure comprises a permeable structure, a double-air-chamber oscillating water column system and an anchoring fixing system;

the hollow structure 1 is a circular cylinder structure, is fixed on the outer side of the outer circular cylinder 3, the inner radius of the hollow structure is the same as the outer radius of the outer circular cylinder, circular holes are uniformly distributed on the surface of the hollow structure, and the size and the distribution density of the holes are determined according to the actual sea condition of a target sea area;

the double-air-chamber oscillating water column system mainly comprises an outer hemispherical ring body 2, an outer annular cylinder 3, an inner annular cylinder 4, an inner hemispherical ring body 5, an inner cylinder 6, an outer air chamber 7, an inner air chamber 8, a cross-shaped supporting cross beam 9, a first air hole channel 11, a first turbine power generation system 12, a second air hole channel 13 and a second turbine power generation system 14; the outer air chamber 7 is a cavity formed by an outer hemispherical ring body 2, an outer annular cylinder 3, an inner annular cylinder 4 and an inner hemispherical ring body 5, and the outer annular cylinder 3 is connected with the outer hemispherical ring body 2; the inner air chamber 8 is a cavity formed by the inner circular cylinder 4, the inner hemispherical ring body 5 and the inner cylinder 6, and the inner circular cylinder 4 is connected with the inner hemispherical ring body 5; the top of the inner cylinder 6 is positioned in the inner air chamber 8 and is away from the inner hemispherical ring body 5 beyond the water surface; the cross-shaped supporting cross beam 9 is fixed at the top of the inner cylinder 6 and is used for supporting and fixing the outer cylindrical ring body 3 and the inner cylindrical ring body 4; a first air hole channel 11 and a second air hole channel 13 are reserved at the top end of the outer hemispherical ring body 2, the two air hole channels respectively correspond to the inner air chamber 8 and the outer air chamber 7, the first turbine power generation system 12 is positioned in the first air hole channel 11, and the second turbine power generation system 14 is positioned in the second air hole channel 13;

the anchoring system consists of a plurality of anchor chains 10, one end of each anchor chain 10 is connected with the inner cylinder 6, and the other end is fixed on the seabed.

The invention has the beneficial effects that:

the floating structure can be applied to deep and open sea areas with higher wave energy density.

The oscillating water column system adopts a double-air-chamber structure, so that waves with wider frequency bands can be captured, and the power generation efficiency of the device is improved.

By adopting an external hollow plate structure, the wave load received by the device can be reduced, so that the survival capability of the device is improved, and the long-term, efficient and stable operation of the oscillating water column wave energy assembly and conversion device system is further ensured.

Drawings

Fig. 1 is a schematic structural diagram of a floating double-air-chamber oscillating water column wave energy conversion device with an external hollow plate structure.

Fig. 2 is a schematic structural diagram of the outer circular cylinder, the inner circular cylinder and the inner cylinder.

Fig. 3 is a schematic structural diagram of an outer hemisphere ring body.

Fig. 4 is a schematic view of a permeable structure.

FIG. 5 is a horizontal cross-sectional view of the outer annular cylinder, inner cylindrical structure and cross support beam.

In the figure: 1, a hollow structure; 2, an outer hemispherical ring body; 3, an outer circular cylinder; 4, an inner circular cylinder; 5, an inner hemispherical ring body; 6, inner cylinder; 7 an outer air chamber; 8, an inner air chamber; 9 cross supporting beams; 10 anchor chains; 11 a first air vent passage; 12 a first turbine power generation system; 13 a second air vent channel; 14 second turbine power generation system.

Detailed Description

The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.

As shown in FIG. 1: a floating type double-air-chamber oscillating water column wave energy conversion device provided with an external permeable structure comprises a permeable structure, a double-air-chamber oscillating water column system and an anchoring fixing system. The main composition structure comprises a hollow structure 1, an outer hemisphere ring body 2, an outer ring cylinder 3, an inner ring cylinder 4, an inner hemisphere ring body 5, an inner cylinder 6, an outer air chamber 7, an inner air chamber 8, a cross-shaped supporting cross beam 9, an anchor chain 10, a first air hole channel 11, a first turbine power generation system 12, a second air hole channel 13 and a second turbine power generation system 14.

The hollow structure 1 is located the device outside, and the internal surface closely laminates with outer ring cylinder 3 surface, and top surface and outer ring cylinder 3 are in same height, and the bottom surface is less than outer ring cylinder 3, carries out certain energy dissipation to the shortwave, reduces the wave load that the device received.

In the oscillation system, the axes of the outer hemispherical ring body 2, the outer annular ring cylinder 3, the inner annular ring cylinder 4, the inner hemispherical ring body 5 and the inner cylinder 6 are superposed. Wherein, the lower end of the external hemisphere ring 2 is opened, the radius is equal to the internal and external radius of the external circular cylinder 3, the axes of the two are coincident and are closely combined up and down, the center position of the top end of the external hemisphere ring 2 is provided with two cylindrical first air vent channels 11 and air channels 213, the radius of the first air vent channel 11 and the second air vent channel 13 is determined according to the actual sea condition; a first turbine power generation system 12 is arranged in the first air hole channel 11, a second turbine power generation system 14 is arranged in the second air hole channel 13, and the first turbine power generation system 12 and the second turbine power generation system 14 can rotate under the action of bidirectional air flow, so that the device can generate power in the air suction and exhaust processes. The outer air chamber 7 and the inner air chamber 8 are respectively provided with a turbine power generation system, and the inner hemispherical ring body 5 is designed to separate the outer air chamber 7 and the inner air chamber 8; the inner hemispherical ring body 5 is positioned in the outer hemispherical ring body 2, and the axes of the inner hemispherical ring body and the outer hemispherical ring body are superposed; the lower part of the inner hemispherical ring body 5 is opened and is vertically attached to the circular cylinder 4 with the same inner and outer radius, and the axes of the two are superposed; a cylindrical passage is reserved at the top of the inner hemispherical ring body 5 and is connected with the first air hole passage 11; the second air hole passage 13 and the second turbine power generation system 14 are connected to the outer air chamber 7; the inner air chamber 8 is connected with a first air hole channel 11 and a first turbine power generation system 12; the inner cylinder 6 consists of two cylinders with different radiuses, the axes of the two cylinders are superposed and positioned in the center of the structure, the radius of the upper cylinder is small, the radius of the lower cylinder is large, buoyancy is provided for the whole device, the height of the top surface of the upper cylinder is equal to that of the inner circular cylinder 4, the bottom surface of the upper cylinder is lower than that of the inner circular cylinder 4, the top of the upper cylinder is connected with the inner circular cylinder 4 and the outer circular cylinder 3 through a cross-shaped supporting beam 9, the cross-shaped supporting beam 9 penetrates through the upper cylinder and the inner circular cylinder 4 and is connected with the outer circular cylinder 2; the radius of the lower cylinder is larger than that of the upper cylinder but smaller than that of the inner circular cylinder 4, and the bottom of the lower cylinder is fixed on the seabed through a plurality of anchor chains 10.

When in use, the device is fixed by adopting the anchor chain. Under the action of sea waves, water columns in the two air chambers oscillate up and down to do piston motion, external air is forced to flow into the air outlet chamber through the respective vent channels, and the turbine power generation system is pushed to work, so that power can be generated, and when air flows enter the air outlet chamber, the turbine can generate power.

The present invention may have other embodiments in addition to the above embodiments. All technical solutions which are formed by using equivalents or equivalent fall within the protection scope of the claims of the present invention.