CN219220617U

CN219220617U - Double-air-chamber oscillating water column wave energy power generation system integrated with parabolic energy collecting wall

Info

Publication number: CN219220617U
Application number: CN202320078789.7U
Authority: CN
Inventors: 宁德志; 赵波; 钱坤; 程蒙召; 王荣泉
Original assignee: Dalian University of Technology
Current assignee: Dalian University of Technology
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-06-20
Anticipated expiration: 2033-01-10

Abstract

The utility model belongs to the technical field of renewable energy utilization, and provides a double-air-chamber oscillation water column wave energy power generation system integrated with a parabolic energy collecting wall, which comprises the parabolic energy collecting wall and a cylindrical double-air-chamber oscillation water column wave energy power generation device; the parabolic energy-collecting wall is of a split type unit structure; the cylindrical double-air-chamber oscillating water column wave energy power generation device is arranged in a wave energy enrichment area of the parabolic energy gathering wall. The utility model can collect low wave energy flow waves, thereby improving energy input; the cylindrical oscillating water column is adopted, so that wave energy in a wave field can be absorbed at 360 degrees; the double air chamber structure is adopted, the overall efficiency of the double air chamber structure is higher than that of the single air chamber structure, and the effective frequency bandwidth is larger, namely the double air chamber structure is more suitable for sea areas with wider wave frequency bands. The utility model improves the energy output of the device from the aspects of energy input and energy conversion efficiency, and improves the applicable energy of the device to the sea area from the applicable frequency bandwidth, thereby improving the overall energy output of the device under different wave conditions.

Description

Double-air-chamber oscillating water column wave energy power generation system integrated with parabolic energy collecting wall

Technical Field

The utility model relates to the technical field of renewable energy utilization, in particular to a double-air-chamber oscillation water column wave energy power generation system integrated with a parabolic energy collecting wall.

Background

In order to solve the environmental problems caused by the increasing shortage of fossil energy and the huge use of fossil energy, the development of clean renewable energy is the only choice. The wave energy is used as a clean, stable and sustainable renewable energy source, and has good application prospect. Thanks to the characteristics of simple structure and good reliability of the device, the oscillating water column type wave energy power generation device is one of the most promising wave energy devices at present. The main structure of the device is a semi-submerged air chamber with an underwater opening, an air flow pipeline at the top is connected with an air turbine power generation system, under the action of waves, a water column in the air chamber oscillates up and down to force air in the air chamber to form reciprocating air flow in the air flow pipeline, the air flow pushes an air turbine arranged in the air flow pipeline to rotate, and the turbine further drives a power generator to work so as to finally convert wave energy into electric energy. The water column in the air chamber of the oscillating water column power generation device has a natural frequency which is related to the geometric dimension of the air chamber, and when the frequency of the incident wave is near the natural frequency, the energy conversion efficiency of the device is higher. Therefore, the energy conversion efficiency of the traditional oscillating water column wave energy device with a single air chamber structure is not high, and the effective frequency bandwidth is narrow. At present, research has proven that the double air chamber structure can improve the energy conversion efficiency of the oscillating water column wave energy device, and simultaneously widen the effective frequency bandwidth.

It is generally considered that the method has great development value only in sea areas with higher annual average wave energy density, and has great obstacle in commercialization of wave energy due to low wave energy conversion efficiency and low generated energy under the condition of generally lower wave energy density in sea areas in China.

In order to solve the technical problem and make the wave energy become more economically feasible energy, the utility model provides equipment capable of concentrating the energy of the sea area with lower wave energy density and simultaneously improving the energy capturing efficiency of the wave energy device.

In the fields of solar energy collection, radio wave reception and other technologies, the use of parabolic reflectors to focus the energy of incident waves is a well-known concept, for example, the 500 meter bore spherical radio telescope (FAST), known as "chinese sky eye", which forms a reflecting surface that reflects electromagnetic waves to a focal point for a receiver to receive and record signals. Therefore, the utility model refers to the principle, and provides a parabolic energy collecting wall which collects the energy of the sea area with lower wave energy density, so as to increase the generated energy of the oscillating water column wave energy power generation device.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a double-air-chamber oscillation water column wave energy power generation system integrated with a parabolic energy collecting wall, so as to solve the technical problems. The parabolic energy collecting wall 12 is similar to a FAST sky, so that energy in a sea area with lower wave energy density can be collected at the wave energy generating device, and the energy density near the wave energy device is improved; compared with a single air chamber, the oscillating water column wave energy device with the double air chamber structure can improve the energy conversion efficiency of the wave energy device and widen the effective frequency bandwidth of the device. The double-air-chamber oscillation water column wave energy power generation system of the integrated parabolic energy gathering wall can efficiently utilize wave energy to generate power in sea areas with low wave energy density.

The technical scheme of the utility model is as follows: a double-air-chamber oscillation water column wave energy power generation system integrated with a parabolic energy collecting wall comprises the parabolic energy collecting wall 12 and a cylindrical double-air-chamber oscillation water column wave energy power generation device; the parabolic energy collecting wall 12 is of a split type unit structure; the cylindrical double-air-chamber oscillation water column wave energy power generation device is arranged in the wave energy enrichment area of the parabolic energy gathering wall 12, and directly improves the energy input of the wave energy enrichment area, so that the overall energy output of the wave energy enrichment area is improved; the cylindrical double-air-chamber oscillation water column wave energy power generation device comprises a base, a shell, air holes, air ventilation levels and air chambers; the solid cylinder 2 is connected with the cylindrical base 1, and the cylindrical base 1 is fixed on the sea bottom; the two ends of the inner cylindrical shell 3 and the outer cylindrical shell 4 are both open, and the two are coaxially sleeved on the solid cylinder 2 from inside to outside in sequence; the solid beam 5 penetrates through the solid cylinder 2 and the cylindrical base 1, and two ends of the solid beam are respectively fixed on the outer cylindrical shell 4 to form a double-air-chamber structure; an air chamber a9 is arranged between the inner cylindrical shell 3 and the solid cylinder 2 under the solid beam 5; an air chamber b10 is arranged between the inner cylindrical shell 3 and the outer cylindrical shell 4 below the solid beam 5; the conical ring body 6 is arranged at the top end of the outer cylindrical shell 4; the top of the conical ring body 6 is provided with an air hole 7, an air turbine 8 is arranged in the air hole 7, and the air turbine 8 is connected with a generator 11 and is fixed at the top end of the solid cylinder 2.

The utility model aims to collect wave energy by adopting the parabolic energy collecting wall 12, collect the wave energy near the focus of parabola of the parabolic energy collecting wall, improve the energy flow density of the area and form an energy-rich area.

The cylindrical double-air-chamber oscillation water column wave power generation device is adopted, and has higher reliability compared with other types of devices; the cylindrical structure is adopted, so that the wave-direction adaptability of the power generation device can be improved; by adopting the double-air-chamber structure, the energy conversion efficiency can be improved, the effective frequency bandwidth can be widened, and finally the efficient conversion from wave energy to electric energy can be realized.

The utility model has the beneficial effects that: 1. the parabolic energy collecting wall is provided, and can collect low-wave energy flow waves, so that energy input is improved; 2. the parabolic energy-collecting wall adopts a split type unit structure, and the installation of the parabolic energy-collecting wall can be adjusted according to specific conditions in the construction period, so that the production and the construction are facilitated; 3. the cylindrical oscillating water column is adopted, so that wave energy in a wave field can be absorbed at 360 degrees; 4. the oscillating water column wave energy device adopts a double-air-chamber structure, the overall efficiency of the double-air-chamber structure is higher than that of a single-air-chamber structure, and the effective frequency bandwidth of the double-air-chamber structure is larger, namely the double-air-chamber structure is more suitable for sea areas with wider wave frequency bands. The utility model improves the energy output of the device from the aspects of energy input and energy conversion efficiency, and improves the applicable energy of the device to the sea area from the applicable frequency bandwidth, thereby improving the overall energy output of the device under different wave conditions.

Drawings

Fig. 1 is an overall schematic diagram of a double-air-chamber oscillating water column wave energy power generation system integrated with a parabolic energy collecting wall.

Fig. 2 is a schematic structural diagram of a cylindrical double-air-chamber oscillating water column wave energy power generation device.

Fig. 3 is a schematic cross-sectional view of a cylindrical double-air-chamber oscillating water column wave energy power generation device.

In the figure: 1-a cylindrical base; 2-a solid cylinder; 3-an inner cylindrical housing; 4-an outer cylindrical housing; 5-solid beams; 6-conical ring body; 7-air holes; 8-an air turbine; 9-air chamber a; 10-air chamber b; an 11-generator; 12-parabolic energy gathering wall;

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings and technical schemes.

As shown in fig. 1, the double-air-chamber oscillation water column wave energy power generation system integrated with the parabolic energy collecting wall is applicable to a low-energy-flow-density sea area and comprises a parabolic energy collecting wall 12 and a cylindrical double-air-chamber oscillation water column wave energy power generation device. Wherein parabolic energy concentrating wall 12 is comprised of a plurality of split units. Each split unit can be prefabricated in advance and transported to site installation so as to cope with changeable conditions of a construction site. Parabolic energy concentrating wall 12 focuses incident wave energy reflection at a focal point to form a wave energy enrichment zone, and a cylindrical double air chamber oscillating water column wave energy power generation device is arranged in the wave energy enrichment zone for wave energy conversion.

As shown in fig. 3, for a cylindrical double-air-chamber oscillation water column wave power generation device, a cylindrical base 1 is fixed on the sea bottom, a solid cylinder 2 is connected with the cylindrical base 1, and the cylindrical base 1 and the solid cylinder serve as the basis of the whole cylindrical double-air-chamber oscillation water column wave power generation device. The inner cylindrical shell 3 and the outer cylindrical shell 4 are coaxial and fixed on the solid cylinder 2 through the solid beam 5 to form an air chamber a9 and an air chamber b10, so as to form a double-air-chamber structure. The conical ring body 6 is arranged on the outer cylindrical shell 4, an air hole 7 is formed in the top of the conical ring body 6, and an air turbine 8 is arranged in the air hole 7. The air turbine 8 is connected with a generator 11, both of which are fixed on the solid cylinder 2.

When the cylindrical double-air-chamber oscillation water column wave energy power generation device is used, the cylindrical double-air-chamber oscillation water column wave energy power generation device is fixed on the sea floor, under the action of sea waves, water columns between the inner cylindrical shell 3, the outer cylindrical shell 4 and the solid cylinder 2 oscillate up and down, air in the air chamber 9a and the air chamber b10 are forced to form reciprocating air flow at the air hole 7, and the primary conversion of energy is completed; the reciprocating airflow drives the blades of the air turbine 8 to rotate, so that the air kinetic energy is converted into mechanical energy, and the secondary conversion of energy is completed; the air turbine 8 further drives the generator 9 to operate, converting mechanical energy into electrical energy. The wave energy is converted into electric energy, and three-stage conversion of energy is completed.

The air turbine 8 can rotate under the action of bidirectional air flow, and can generate electricity in the process of air entering and exiting the air hole 7, so that the energy conversion efficiency is improved.

The solid cylinder 2 is the same as the axes of the inner cylinder shell 3, the outer cylinder shell 4 and the generator 11, so that the water surface sloshing in the air chamber can be reduced, the impact of waves on the structure formed by the oscillating water column system is reduced, and the service life of the cylindrical double-air-chamber oscillating water column wave energy power generation device is prolonged.

In addition to the above embodiments, the present utility model may have other embodiments. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the utility model.

Claims

1. The double-air-chamber oscillating water column wave energy power generation system integrated with the parabolic energy collecting wall is characterized by comprising the parabolic energy collecting wall (12) and a cylindrical double-air-chamber oscillating water column wave energy power generation device; the parabolic energy-collecting wall (12) is of a split type unit structure; the cylindrical double-air-chamber oscillation water column wave energy power generation device is arranged in a wave energy enrichment area of the parabolic energy gathering wall (12); the cylindrical double-air-chamber oscillation water column wave energy power generation device comprises a base, a shell, air holes, air ventilation levels and air chambers; the solid cylinder (2) is connected with the cylindrical base (1), and the cylindrical base (1) is fixed on the sea bottom; both ends of the inner cylindrical shell (3) and the outer cylindrical shell (4) are opened, and the two are coaxially sleeved on the solid cylinder (2) from inside to outside in sequence; the solid beam (5) penetrates through the solid cylinder (2) and the cylindrical base (1), and two ends of the solid beam are respectively fixed on the outer cylindrical shell (4) to form a double-air-chamber structure; an air chamber a (9) is arranged between the inner cylindrical shell (3) and the solid cylinder (2) under the solid beam (5); an air chamber b (10) is arranged between the inner cylindrical shell (3) and the outer cylindrical shell (4) under the solid beam (5); the conical ring body (6) is arranged at the top end of the outer cylindrical shell (4); the top of the conical ring body (6) is provided with an air hole (7), an air turbine (8) is arranged in the air hole (7), and the air turbine (8) is connected with a generator (11) and is fixed at the top end of the solid cylinder (2).