CN115111106A - Shore-based oscillating water column wave energy power generation device integrated with open wave dissipation structure - Google Patents

Abstract

The invention discloses a shore-based oscillating water column wave energy power generation device integrated with a permeable wave dissipation structure, which comprises a square ring cylinder, a square cover plate, a turbine power generation system, an air flow pipeline, an air chamber and a permeable plate, wherein the square ring cylinder is connected with the square cover plate through the air flow pipeline; the air chamber is a cavity formed by a square ring column body and a square cover plate; the square ring column body is a hollow square column body with openings at the top end and the bottom end; the back surface of the square ring cylinder body is fixed on a breakwater or a bank dike, the front surface of the square ring cylinder body facing waves is provided with a through hollow plate, the square cover plate is arranged at the top of the square ring cylinder body, an air flow pipeline is arranged on the square cover plate, a turbine power generation system is arranged in the air flow pipeline, the turbine power generation system consists of an air turbine and a power generator, and the air turbine is connected with the power generator; the shore-based oscillating water column wave energy power generation device integrated with the permeable wave dissipation structure can effectively reduce wave load generated under the action of short-period waves, and has little influence on long-period waves with high power generation efficiency and stability.

Description

A shore-based oscillating water column wave energy power generation device integrated with a permeable wave-absorbing structure

technical field

The invention relates to the technical field of wave energy power generation devices, in particular to a shore-based oscillating water column wave energy power generation device with an integrated air-permeable wave elimination structure.

Background technique

In today's world, energy demand continues to increase, while fossil energy reserves are limited, the world is facing a crisis of energy shortage, and the use of fossil energy will lead to serious environmental and climate problems. The development of renewable energy is the best choice to solve the above problems. As a kind of marine renewable energy, wave energy is inexhaustible and inexhaustible. The oscillating water column type wave power generation device has the advantages of reliable performance and simple structure, and is currently the most widely used wave power generation technology.

The main structure of the oscillating water column type wave energy power generation device is a semi-submerged air chamber with an underwater opening, and an airflow pipe is connected to the turbine power generation system at the upper part of the air chamber. Under the action of waves, the water column in the air chamber vibrates up and down, forcing the air in the air chamber to generate a reciprocating airflow in the airflow duct. The airflow drives the air turbine installed in the airflow duct to rotate, and the air turbine further drives the generator to work. Conversion of wave energy to electrical energy.

In the actual marine environment, due to the poor transmission ability of short-period waves, when they interact with the wave energy power generation device, a large reflection will occur, resulting in a large wave load, and the water column in the gas chamber will produce sloshing motion, which on the one hand leads to the device. The energy conversion efficiency is low, and on the other hand, it threatens the structural safety of the device. Previously, in actual engineering and sea trials, different countries and different types of wave energy devices have experienced safety accidents, resulting in huge losses. The air-permeable structure has good wave elimination effect and is widely used in marine engineering structures that need wave elimination.

Therefore, in order to protect the wave energy power generation device, it is an urgent problem for those skilled in the art to provide a shore-based oscillating water column wave energy power generation device with an integrated air-permeable wave elimination structure.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a shore-based oscillating water column wave energy power generation device with an integrated air-permeable wave elimination structure, so as to solve the problems existing in the above-mentioned prior art, and can effectively reduce the wave load generated by short-period wave action, while reducing the impact on power generation. Efficient and stable long-period waves have little effect.

For achieving the above object, the present invention provides the following scheme:

The invention provides a shore-based oscillating water column wave energy power generation device with an integrated air permeable wave elimination structure, comprising a square ring cylinder, a square cover plate, a turbine power generation system, an air flow pipe, an air chamber and a permeable plate;

The air chamber is a cavity composed of a square ring cylinder and a square cover plate; the square ring cylinder is a hollow square cylinder with open top and bottom ends; the back of the square ring cylinder is fixed on the breakwater or On the embankment, the square ring cylinder is provided with the air-permeable plate facing the front of the wave, the square cover plate is arranged on the top of the square ring cylinder, the square cover plate is provided with an airflow duct, the The turbine power generation system is installed in the airflow duct, the turbine power generation system is composed of an air turbine and a generator, and the air turbine is connected to the generator.

Preferably, the airflow duct is arranged at the center of the square cover plate.

Preferably, a plurality of square through holes are distributed on the permeable plate, and the permeable plate is fixed on the square ring cylinder by high-strength bolts.

Preferably, the square ring cylinder, the square cover plate and the air duct are made of high-strength and light-weight materials, and the joints are anchored by high-strength stainless steel bolts.

The present invention has achieved the following beneficial technical effects with respect to the prior art:

The shore-based oscillating water column wave energy power generation device with integrated air-permeable wave elimination structure provided by the invention combines the oscillating water column type wave energy power generation device with a breakwater or a bank, and uses wave energy to generate electricity, thereby reducing the construction cost of the breakwater. ;Using the perforated plate to absorb waves with a smaller period can effectively reduce the wave load on the device and improve the survivability of the device, thereby reducing the maintenance cost of the wave energy power generation device; the fixed structure can ensure the stability of the device, Improve power generation efficiency; the wave energy power generation device can be arranged along the breakwater or bank embankment, while improving the utilization rate of wave energy, taking into account the functions of marine engineering protection facilities.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the three-dimensional structure schematic diagram of the shore-based oscillating water column wave energy power generation device integrated with the permeable wave eliminating structure in the present invention;

Fig. 2 is the transverse sectional view of the shore-based oscillating water column wave energy power generation device integrated with the permeable wave eliminating structure in the present invention;

Fig. 3 is the structural representation of the hollow plate in the present invention;

In the picture: 1 breakwater or bank; 2 square ring cylinder; 3 square cover plate; 4 turbine power generation system; 5 airflow duct; 6 air chamber;

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The purpose of the present invention is to provide a shore-based oscillating water column wave energy power generation device with an integrated air-permeable wave eliminating structure, so as to solve the problems existing in the prior art.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

The shore-based oscillating water column wave energy power generation device with integrated air-permeable wave-absorbing structure in this embodiment, as shown in Figure 1-2, includes a square ring cylinder 2, a square cover plate 3, a turbine power generation system 4, and an airflow duct 5 , the air chamber 6 and the permeable plate 7;

The air chamber 6 is a cavity composed of a square ring cylinder 2 and a square cover plate 3; the square ring cylinder 2 is a hollow square cylinder with open top and bottom ends; the back of the square ring cylinder 2 is fixed on a breakwater or a bank On the embankment 1, the square ring cylinder 2 is provided with a transparent plate 7 facing the front of the wave, and the square cover plate 3 is arranged on the top of the square ring cylinder 2. The side lengths of the two are equal and are connected by high-strength stainless steel bolts; the square cover plate 3 is provided with an airflow duct 5 at the center position, and a turbine power generation system 4 is installed in the airflow duct 5. The turbine power generation system 4 is composed of an air turbine and a generator, and the air turbine is connected to the generator.

In this specific embodiment, as shown in FIG. 3 , a plurality of square through holes are distributed on the permeable plate 7, and the permeable plate 7 is fixed on the square ring cylinder 2 by high-strength bolts; the permeable plate 7 can be used in a marine environment. It can protect the oscillating water column type wave energy power generation device and reduce the cost of maintenance and replacement.

In this specific embodiment, the square ring cylinder 2, the square cover plate 3 and the airflow duct 5 are high-strength and lightweight materials, and the high-strength lightweight materials can be selected from widely used martensitic stainless steel; the joints are made of high-strength stainless steel bolts. Anchor.

In the marine environment, the wave energy with a shorter period will be absorbed by the action of the hollow plate 7; while the waves with a longer period will transmit through the bottom of the square ring cylinder 2 and enter the square ring cylinder 2 to drive the air chamber 6. The water column oscillates up and down, thereby forcing the gas in the air chamber 6 to compress and expand; the compression and expansion of the gas will form a reciprocating airflow in the airflow duct 5 on the square cover 3, thereby promoting the turbine power generation system 4 to work and generate electricity. The water column inside the air chamber 6 will have a fixed fluctuation frequency, which is related to the structural geometry of the air chamber 6. According to the sea conditions of the target sea area, the air chamber 6 of the appropriate size is selected so that the oscillation frequency of the water column in the air chamber 6 is the same as that of the waves outside. Resonance occurs when the frequencies are close to each other, thereby increasing the gas flow rate and flow rate in the gas flow pipe 5, thereby improving the power generation efficiency.

The square ring cylinder 2 can be fixed on the breakwater or the bank 1 with high-strength stainless steel bolts, which can not only generate electricity stably by using waves, but also take into account the functions of energy dissipation and wave prevention.

In this specific embodiment, the air flow duct 5 on the upper part of the square cover plate 3 is smoothed to ensure that the gas can enter the air flow duct 5 stably, reduce resistance, and effectively improve the power generation efficiency.

In this specific embodiment, the turbine power generation system 4 can work under the action of two-way air flow (two-way air flow is always that the pressure in the air chamber is stronger than the external atmospheric pressure, and the air flow flows out from the inside to the outside, pushing the turbine to rotate and generate electricity, and the other direction is that the external pressure is stronger than the air pressure. Indoor pressure, the airflow flows from the outside to the inside, and pushes the turbine to rotate from the other direction to generate electricity), the gas can generate electricity when it flows into and out of the airflow pipe 5, and the power generation efficiency is improved.

The present invention uses specific examples to illustrate the principles and implementations of the present invention, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention; There will be changes in the specific implementation and application scope. In conclusion, the contents of this specification should not be construed as limiting the present invention.

Claims (4)

1. The utility model provides an integrated shoreside-based formula oscillating water column wave energy power generation facility of penetrating unrestrained structure that disappears which characterized in that: the turbine power generation system comprises a square ring cylinder, a square cover plate, a turbine power generation system, an air flow pipeline, an air chamber and a hollow plate;

the air chamber is a cavity formed by a square ring cylinder and a square cover plate; the square ring column body is a hollow square column body with openings at the top end and the bottom end; the back of square ring cylinder is fixed on breakwater or bank dyke, square ring cylinder sets up towards the front of wave the board that passes through the sky, square apron set up in the top of square ring cylinder, be provided with the air current pipeline on the square apron, install in the air current pipeline turbine power generation system, turbine power generation system comprises air turbine and generator, and air turbine connects the generator.

2. The shore-based oscillating water column wave energy power generation device integrated with the air-permeable wave-dissipating structure according to claim 1, characterized in that: the airflow pipeline is arranged in the center of the square cover plate.

3. The shore-based oscillating water column wave energy power generation device integrated with the air-permeable wave-dissipating structure according to claim 1, characterized in that: the hollow plate is provided with a plurality of square through holes and fixed on the square ring cylinder through high-strength bolts.

4. The shore-based oscillating water column wave energy power generation device integrated with the air-permeable wave-dissipating structure according to claim 1, characterized in that: the square ring column body, the square cover plate and the airflow pipeline are made of high-strength light materials, and joints are anchored by high-strength stainless steel bolts.

Images