CN207485595U - Based on single pile formula wind energy-wave energy-tide energy integrated power generation system - Google Patents

Abstract

An integrated power generation system based on single-pile wind energy-wave energy-tidal current energy belongs to the technical field of marine renewable energy utilization, enabling the three to share a supporting structure and a power transmission system. In the ocean, an integrated system integrating wind energy, oscillating water column wave energy, and horizontal axis tidal current energy system is established by using a single pile support structure to form an overall power generation system. The utility model can make full use of offshore renewable resources, so as to achieve the purpose of improving the utilization rate of single pile foundation and reducing the total cost of integrated system power generation, improve the overall economics of offshore wind farms, and reduce the cost of wind energy, wave energy and tidal current energy generation. The new fixed wind-wave-tidal current energy integrated power generation system improves the effective utilization of sea areas, reduces construction costs and maintenance costs, makes full use of existing mature wind turbine technologies, and promotes the commercialization of wave energy devices and tidal current energy devices. It is a reliable offshore renewable energy generation platform.

Description

Integrated power generation system based on single pile wind energy-wave energy-tidal current energy

technical field

The utility model belongs to the technical field of marine renewable energy utilization, and in particular relates to a wind energy-wave energy-tidal current energy combined power generation device, which is an integrated power generation based on a single pile structure combining wind energy, oscillating water column wave energy and tidal current energy system.

Background technique

Offshore wind energy, wave energy and tidal current energy are all marine renewable energy sources. Wind power is currently the most promising renewable energy source for large-scale development. Offshore wind power has become a new direction of international wind power development and has attracted the attention of all countries. The development of offshore wind energy is of great significance to my country's control of atmospheric smog and adjustment of energy structure. Wind-rich waters are often also rich in wave energy. Tidal current power generation is basically not affected by the weather, and its output power is relatively stable. It has developed rapidly in recent years. However, due to the low energy conversion efficiency, high power generation cost and low reliability of tidal wave energy and tidal current energy generation devices, their commercialization is limited to a certain extent. Among the foundations of offshore wind farms, monopile foundations are widely used because of their advantages such as low construction cost, easy installation, no need for seabed preparation, and strong applicability. Currently, 80% of installed offshore wind turbines use monopile foundations. With the development of installation equipment and the maturity of installation technology in my country, the application prospect of monopile foundation in my country's offshore wind power industry is extremely broad. Wave energy power generation devices mainly include: sea snake type, oscillating buoy type, oscillating water column type, swing type, over-wave type and other power generation devices. The tidal current energy generation device mainly includes a horizontal axis and a vertical axis tidal current energy generation device.

The combination of offshore wind power development, wave energy resources and tidal current energy resource utilization can effectively improve the power generation capacity of offshore wind farms, improve the economy of the overall power generation system, and promote the commercialization of wave energy and tidal current energy devices. The comprehensive utilization of renewable energy is an effective way to reduce the cost of renewable energy power generation.

Utility model content

The purpose of the utility model is to provide a wind energy-wave energy-tidal current energy integrated power generation system based on a single pile, so that the three can share the supporting structure and the power transmission system. In the ocean, an integrated system integrating wind energy, oscillating water column wave energy, and horizontal axis tidal current energy system is established by using a single pile support structure to form an overall power generation system. The utility model can make full use of offshore renewable resources, so as to improve the utilization rate of single pile foundation and reduce the total cost of integrated system power generation, improve the overall economics of offshore wind farms, and reduce the cost of wind energy, wave energy and tidal current energy generation.

Technical scheme of the utility model:

An integrated power generation system based on single-pile wind energy-wave energy-tidal current energy, a power generation structure integrated with single-pile foundation wind turbines, oscillating water column wave energy, and horizontal axis tidal current energy, including single-pile fixed wind power generation systems, oscillating water column type The wave energy generating device 4 and the horizontal axis tidal current energy generating device; also include the wave energy generating device located at the sea level of the single pile and the tidal energy generating device located under water;

The single-pile fixed wind power generation system includes a wind turbine 1, a tower 2, a single-pile foundation 6 and a power transmission system; the wind turbine 1 is connected to the single-pile foundation 6 through the tower 2, and the single-pile foundation 6 is fixed on the seabed 7; the oscillating water column type wave energy generating device 4 is fixed on the monopile foundation 6 through the first sleeve 3; the horizontal axis tidal current energy generating device includes an outrigger structure and a tidal current energy generator, two tidal current energy The generator 12 is installed at both ends of the outrigger structure 14, and the central position of the outrigger structure is connected with the monopile foundation 6 through the second sleeve 13. By adjusting the plane where the structure is located, the axial and incoming flow of the tidal current energy generator 12 can be realized. same direction;

The oscillating water column type wave energy generating device 4 comprises a shell body of the wave energy generating device, a wave inlet 8, an air chamber 10 and an air turbine generator 11; the inside of the shell body of the wave energy generating device is an air chamber 10, one of which is There is a wave inlet 8 on the side, and two circular air outlets on the top, and an air turbine generator 11 is installed at the air outlet; when in use, the integrated power generation system based on single pile wind energy-wave energy-tidal current energy is placed in the water area Among them, under the action of waves, the waves enter the air chamber 10 through the wave inlet 8 to form an oscillating water column 9 that vibrates up and down. The oscillating water column 9 vibrates up and down to make the gas in the air chamber 10 reciprocate through the air outlet on the top of the air chamber 10, and then Drive air turbine generator 11 to generate electricity;

The air chamber 10 adopts a tapered shape to ensure that the pressure at the end of the airflow is increased, so as to promote the rotation of the air turbine generator 11 faster and improve the power generation efficiency.

The wave inlet 8 faces the dominant direction of the wave, which improves the conversion efficiency.

The air turbine generator 11 is a two-way air turbine generator.

The wind turbine 1 is a megawatt level horizontal axis wind power generator.

The tidal current energy generator 12 is a horizontal axis tidal current energy generator.

The utility model makes full use of the single pile base of the fixed fan, and shares the support structure and the power transmission system with the wave energy and tidal current energy devices.

The single-pile wind energy-wave energy-tidal current energy integrated power generation system described in the utility model is characterized in that the wave energy generating device is arranged axially symmetrically on the single-pile wind turbine, which can appropriately reduce the wave load. The left-right symmetrical distribution of the tidal current energy generators can reduce load instability.

The beneficial effects of the utility model:

1. The single-pile wind turbine has simple structure, convenient construction, low construction cost and wide application range.

2. Combining offshore wind power with wave energy generation devices and tidal current energy generation devices, sharing offshore platforms, transformers, power transmission and other equipment, improves the overall power generation power of the system, increases power generation and effective working hours, and reduces investment cost.

3. The wave energy device adopts the shape of a circular table, which reduces the wave load and improves the stability of the system.

4. The new fixed wind energy-wave energy-tidal current energy integrated power generation system improves the effective utilization rate of sea areas, reduces construction costs and maintenance costs, makes full use of existing mature wind turbine technologies, and promotes wave energy devices and tidal current energy devices. Commercial application, it is a reliable offshore renewable energy generation platform.

Description of drawings

Fig. 1 is a structural diagram of a monopile wind energy-wave energy-tidal current energy integrated system of the present invention.

Fig. 2 is a side view of the monopile wind energy-wave energy-tidal current energy integrated system of the present invention.

Fig. 3 is a partial top view of the monopile wind energy-wave energy-tidal current energy integrated system of the present invention.

In the figure: 1 fan; 2 tower; 3 first sleeve; 4 oscillating water column type wave energy power generation device;

5 sea level; 6 monopile foundation; 7 seabed; 8 wave inlet; 9 oscillating water column; 10 air chamber;

11 air turbine generator; 12 tidal current energy generator; 13 second sleeve; 14 outrigger structure.

Detailed ways

In order to deepen the understanding of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and technical solutions.

Fig. 1 and Fig. 2 show the embodiment of a new fixed wind energy-wave energy-tidal current energy integration system described in the present invention.

As shown in FIG. 1 , a horizontal axis wind turbine 1 is connected with a monopile foundation 6 and a seabed 7 through a tower 2 . The wave energy generating device is an oscillating water column type wave energy generating device 4, which is located near the sea level of the monopile foundation 6, and is fastened on the monopile foundation 6 through the first sleeve 3, and the first sleeve 6 protects the monopile foundation 6, two tidal current energy generators 12 are installed at both ends of the outrigger structure 14, and the center position of the outrigger structure 14 is connected with the single pile foundation 6 through the second sleeve 13. By adjusting the plane where the outrigger structure 14 is located, Realize that the axial direction of the tidal current energy generator is consistent with the incoming flow direction. The wind generator 1 rotates under the wind force, converts the wind force into mechanical energy, and then drives the wind generator 1 to generate electricity through the gear box. On the other hand, the oscillating water column 9 in the oscillating water column type wave energy generating device 4 reciprocates under the external force of undulating waves, and then converts the reciprocating motion of the gas in the air chamber 10 to drive the air turbine generator 11 to generate electricity. The two-way air turbine generator is adopted, so the process of wave ups and downs can be used to generate electricity, the continuity of power generation is good, and the efficiency is high. The tidal current energy generator 12 is installed at both ends of the outrigger structure, and the central position of the outrigger structure 14 is connected with the monopile foundation 6 through the second sleeve 13. By adjusting the plane where the structure is located, the axial and flow in the same direction

The method is as follows: the wind generator 1 generates electric energy under the action of wind force; the oscillating water column type wave energy generating device 4 is fixedly connected near the sea level through the first sleeve 3 and the monopile foundation 6, and the waves rushing towards the wave inlet 8 enter into the In the oscillating water column type wave energy power generation device 4, an up and down vibrating water column 9 is generated in the gas chamber 10. When the vibrating water column 9 vibrates up and down, the gas in the gas chamber 10 reciprocates through the gas outlet at the upper end of the gas chamber, and the gas reciprocates through the gas outlet. When driving the air turbine generator 11 to generate electricity, electric energy is produced. Two symmetrically distributed tidal current energy generators 12 rotate under the impetus of the incoming flow, thereby generating electric energy. After the electric energy generated by the wind power generator 1, the electric energy generated by the wave energy device and the electric energy generated by the tidal current energy are collected, they are sent to the power grid through the transmission system for use by land users.

The construction and installation process based on the single-pile wind energy-wave energy-tidal current energy integrated system is as follows: first, use the existing offshore wind turbine single pile construction technology to install the single pile foundation 6 on the seabed; secondly install the sleeve to the single pile On the foundation 6; the pre-installed outrigger structure 14, the tidal current energy generator 12 and the oscillating water column wave energy generation device 4 are transported to the installation position by a professional construction ship and installed on the sleeve, and finally the tower 2 is installed And top wind turbine 1, complete the construction and installation of an integrated power generation system based on single-pile wind energy-oscillating water column wave energy-horizontal axis tidal current energy.

Therefore, the single pile foundation support structure adopted by the utility model is convenient to process, install and construct, and the cost is low; wind power generation, wave power generation, and tidal current power generation are completed on the same support structure, so that the three share the support platform and power The supporting transmission system greatly reduces the cost of power generation; the structure is stable and reasonable, which further proves the practicability of the utility model and has remarkable technical effects.

Claims (8)

1. one kind is based on single pile formula wind energy-wave energy-tide energy integrated power generation system, wind turbine, the oscillaton water column type of single-pile foundation The electrification structure that wave energy, horizontal axis tidal current energy integrate, which is characterized in that described based on single pile formula wind energy-wave energy-trend Energy integrated power generation system includes the fixed wind generator system of single pile, oscillaton water column type wave energy generating set (4) and trunnion axis Tidal current energy generating equipment；It further includes the wave energy generating set at single pile sea level and sets underwater marine tidal-current energy power generation dress It puts；

The fixed wind generator system of the single pile includes wind turbine (1), tower (2), single-pile foundation (6) and power transmission system System；The wind turbine (1) is connected by tower (2) with single-pile foundation (6), and single-pile foundation (6) is fixed on sea bed (7)；Described Oscillaton water column type wave energy generating set (4) is fixed on by the first sleeve (3) on single-pile foundation (6)；The trunnion axis tide Stream energy power generator includes contilever structure and marine tidal-current energy generator, and two marine tidal-current energy generators (12) are mounted on contilever structure (14) Both ends, the center of contilever structure is connected by second sleeve (13) and single-pile foundation (6), by adjusting flat where structure Face realizes that the axial direction of marine tidal-current energy generator (12) is consistent with direction of flow；

The described outer cover body of oscillaton water column type wave energy generating set (4) including wave energy generating set, wave import (8), gas chamber (10) and air turbine generator (11)；It is gas chamber (10) inside the outer cover body of wave energy generating set, Side is equipped with wave import (8), and top is set there are two round gas outlet, and air turbine generator (11) is equipped at gas outlet.

2. according to claim 1 be based on single pile formula wind energy-wave energy-tide energy integrated power generation system, which is characterized in that The gas chamber (10) pushes air turbine generator (11) to rotate faster using taper, the pressure increase of guarantee air-flow end, Improve generating efficiency.

3. according to claim 1 or 2 based on single pile formula wind energy-wave energy-tide energy integrated power generation system, feature exists In the wave import (8) improves transfer efficiency towards the dominant direction of wave.

4. according to claim 1 or 2 based on single pile formula wind energy-wave energy-tide energy integrated power generation system, feature exists In the air turbine generator (11) uses two-way air turbine generator.

5. according to claim 3 be based on single pile formula wind energy-wave energy-tide energy integrated power generation system, which is characterized in that The air turbine generator (11) uses two-way air turbine generator.

6. according to claim 1,2 or 5 based on single pile formula wind energy-wave energy-tide energy integrated power generation system, feature It is, the wind turbine (1) is MW class horizontal axis wind-driven generator；The marine tidal-current energy generator (12) is trunnion axis trend It can generator.

7. according to claim 3 be based on single pile formula wind energy-wave energy-tide energy integrated power generation system, which is characterized in that The wind turbine (1) is MW class horizontal axis wind-driven generator；The marine tidal-current energy generator (12) is horizontal axis tidal current energy hair Motor.

8. according to claim 4 be based on single pile formula wind energy-wave energy-tide energy integrated power generation system, which is characterized in that The wind turbine (1) is MW class horizontal axis wind-driven generator；The marine tidal-current energy generator (12) is horizontal axis tidal current energy hair Motor.