CN219220617U - A double-chamber oscillating water column wave energy generation system with integrated parabolic energy-concentrating wall - Google Patents

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

A dual-chamber oscillating water column wave energy generation system integrated with parabolic energy-concentrating walls

technical field

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

Background technique

In order to solve the environmental problems caused by the increasing shortage of fossil energy and its huge use, the development of clean and renewable energy has become the only choice. As a clean, stable and sustainable renewable energy, wave energy has a good application prospect. Owing to the simple structure and good reliability of the device, the oscillating water column wave energy generation device is one of the most promising wave energy devices at present. Its main structure is a semi-submerged air chamber with an underwater opening, and the air flow pipe on the top is connected to the air turbine power generation system. Under the action of waves, the water column inside the air chamber oscillates up and down, forcing the gas in the air chamber to form a reciprocating airflow in the airflow pipe, and the airflow pushes The air turbine installed in the airflow duct rotates, and the turbine further drives the generator to work, and finally converts the wave energy into electrical energy. The water column in the gas chamber of the oscillating water column power generation device has a natural frequency, which is related to the geometric size of the gas chamber. When the frequency of the incident wave is near its natural frequency, the energy conversion efficiency of the device will be relatively high. Therefore, the energy conversion efficiency of the traditional single-chamber structure oscillating water column wave energy device is not high, and its effective frequency bandwidth is relatively narrow. At present, studies have confirmed that the double air chamber structure can improve the energy conversion efficiency of the oscillating water column wave energy device, and at the same time broaden its effective frequency bandwidth.

It is generally believed that only sea areas with high annual average wave energy density have great development value. For the generally low wave energy density in my country's sea areas, due to low wave energy conversion efficiency and low power generation, it is generally considered unsuitable for large-scale waves. There are great obstacles in the commercialization of wave energy.

In order to solve the above technical problems and make wave energy a more economically viable energy source, the utility model proposes a device that can concentrate energy in sea areas with low wave energy density, and at the same time improve the energy capture efficiency of the wave energy device.

In solar energy collection, radio wave reception, and other technical fields, it is a well-recognized concept to use parabolic reflectors to concentrate the energy of incident waves to a focal point, such as the 500-meter Aperture Spherical Radio Telescope (FAST), which is known as the "Chinese Sky Eye". The resulting reflective surface can reflect electromagnetic waves to the focal point so that the receiver can receive and record the signal. Therefore, referring to this principle, the utility model proposes a parabolic energy-gathering wall, which gathers the energy in sea areas with low wave energy density, thereby increasing the power generation of the oscillating water column wave energy power generation device.

Utility model content

The purpose of this utility model is to provide a dual-chamber oscillating water column wave energy generation system integrated with a parabolic energy-concentrating wall to solve the above-mentioned existing technical problems. Among them, the parabolic energy-concentrating wall 12 is similar to the FAST sky eye, which can gather the energy in the sea area with low wave energy density at the wave energy generating device to increase the energy density near the wave energy device; the oscillating water column wave energy device with double air chamber structure is relatively Compared with a single air chamber, the energy conversion efficiency of the wave energy device can be improved, and the effective frequency bandwidth of the device can be broadened at the same time. The double-chamber oscillating water column wave energy generation system integrated with parabolic energy-concentrating walls can efficiently utilize wave energy to generate electricity in sea areas with low wave energy density.

The technical solution of the utility model: a double air chamber oscillating water column wave energy power generation system integrated with a parabolic energy gathering wall, including a parabolic energy gathering wall 12 and a cylindrical double air chamber oscillating water column wave energy power generation device; a parabolic energy gathering The wall 12 is a split unit structure; the cylindrical double air chamber oscillating water column wave energy generating device is arranged in the wave energy enrichment area of the parabolic energy gathering wall 12, which directly increases its energy input, thereby increasing its overall energy output; The air chamber oscillating water column wave energy power generation device includes a base, a shell, an air hole, an air turbine and an air chamber; the solid cylinder 2 is connected with the cylindrical base 1, and the cylindrical base 1 is fixed on the seabed; the inner cylindrical shell 3 and the outer cylindrical Both ends of the shaped shell 4 are open, and the two are coaxially sleeved on the solid cylinder 2 from the inside to the outside; the solid beam 5 runs through the solid cylinder 2 and the cylindrical base 1, and its two ends are respectively fixed on the outer cylindrical On the shell 4, a double air chamber structure is formed; the inner cylindrical shell 3 under the solid beam 5 and the solid cylinder 2 are air chambers a9; the inner cylindrical shell 3 and the outer cylindrical shell under the solid beam 5 The four are air chambers b10; the conical ring body 6 is installed on the top of the outer cylindrical shell 4; the top of the conical ring body 6 is an air hole 7, and an air turbine 8 is installed in the air hole 7, and the air turbine 8 is connected with the generator 11 and fixed on the The top of the solid cylinder 2.

The utility model intends to use a parabolic energy-concentrating wall 12 to converge the wave energy, converging the wave energy near the focus of the parabola, increasing the energy flow density in this area, and forming an energy-rich area.

The utility model adopts a cylindrical double air chamber oscillating water column wave energy generating device, and the oscillating water column wave energy generating device has higher reliability than other types of devices; adopting a cylindrical structure can improve the wave direction adaptability of the generating device; adopting double The gas chamber structure can improve its energy conversion efficiency and broaden its effective frequency bandwidth, and finally realize the efficient conversion of wave energy to electrical energy.

Beneficial effects of the utility model: 1. A parabolic energy-gathering wall is proposed, which can gather low-wave energy flow waves, thereby increasing energy input; 2. The parabolic energy-gathering wall adopts a split unit structure, which can be used according to specific conditions during the construction period The installation of the parabolic energy-concentrating wall is adjusted to facilitate production and construction; 3. The cylindrical oscillating water column can absorb wave energy in the wave field at 360°; 4. The oscillating water column wave energy device adopts a double-air chamber structure, double-air The overall efficiency of the chamber structure is higher than that of the single chamber structure, and its effective frequency bandwidth is also larger, that is, it is more suitable for sea areas with wider wave frequency bands. The utility model improves the energy output of the device in terms of energy input and energy conversion efficiency, and improves the applicable energy of the device to sea areas from the applicable frequency bandwidth, thereby improving the overall energy output of the device under different wave conditions.

Description of drawings

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

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

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

In the figure: 1-cylindrical base; 2-solid cylinder; 3-inner cylindrical shell; 4-outer cylindrical shell; 5-solid beam; 6-conical ring; 7-air hole; 8-air permeability Flat; 9-air chamber a; 10-air chamber b; 11-generator; 12-parabolic energy-concentrating wall;

Detailed ways

Below in conjunction with accompanying drawing and technical scheme, further illustrate the specific embodiment of the utility model.

As shown in Figure 1, a double-chamber oscillating water column wave energy power generation system integrated with a parabolic energy-concentrating wall is suitable for sea areas with low energy flux density. The composition of the power generation device. Wherein the parabolic energy gathering wall 12 is composed of a plurality of split units. Each split unit can be prefabricated in advance and transported to the site for installation to cope with the changing conditions of the construction site. The parabolic energy gathering wall 12 reflects and focuses the incident wave energy at the focal point to form a wave energy enrichment area, and arranges the cylindrical double air chamber oscillating water column wave energy generation device in the wave energy enrichment area for wave energy conversion.

As shown in Figure 3, for a cylindrical double-chamber oscillating water column wave energy device, the cylindrical base 1 is fixed on the seabed, and the solid cylinder 2 is connected to the cylindrical base 1, and the two serve as the entire cylindrical double-chamber oscillating water column The basis of wave power plants. The inner cylindrical shell 3 is coaxial with the outer cylindrical shell 4, and is fixed on the solid cylinder 2 through a solid beam 5 to form an air chamber a9 and an air chamber b10, forming a double air chamber structure. The conical ring body 6 is installed on the outer cylindrical shell 4, and the top of the conical ring body 6 has air holes 7, and an air turbine 8 is installed in the air holes 7. The air turbine 8 is connected with a generator 11, both of which are fixed on the solid cylinder 2.

When in use, the cylindrical double-chamber oscillating water column wave energy generating device is fixed on the seabed. Under the action of sea waves, the water column between the inner cylindrical shell 3, the outer cylindrical shell 4 and the solid cylinder 2 vibrates up and down, forcing The air in the air chamber 9a and the air chamber b10 forms a reciprocating airflow at the air hole 7 to complete the primary conversion of energy; the reciprocating airflow drives the blades of the air turbine 8 to rotate, converting the kinetic energy of the air into mechanical energy to complete the secondary conversion of energy; The air turbine 8 further drives the generator 9 to work, converting mechanical energy into electrical energy. Realize the conversion of wave energy into electrical energy and complete the three-level conversion of energy.

The air turbine 8 can rotate under the action of the two-way airflow, and can generate electricity when the air enters and exits the air hole 7, thereby improving the energy conversion efficiency.

The solid cylinder 2 has the same axis as the inner cylindrical shell 3, the outer cylindrical shell 4, and the generator 11, which can reduce the sloshing of the water surface inside the gas chamber, reduce the impact of waves on the structure of the oscillating water column system, and improve the cylindrical shape. The service life of a double-chamber oscillating water column wave energy device.

In addition to the above-mentioned embodiments, the utility model can also have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (1)

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).

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