CN104832374A - Wind energy, wave energy and ocean current energy integrated power generation system - Google Patents

Abstract

The invention discloses a power generation system integrating wind energy, wave energy and ocean current energy. Including the monopile tower and the wind power generation system, wave power generation system and ocean current power generation system installed on the monopile tower, the monopile tower is vertically fixed on the seabed, and the wind power generation system is installed on the top of the monopile tower , the wave energy generation system is installed on the side of the monopile tower near the sea level, the ocean current energy generation system is installed at the bottom of the monopile tower on the seabed, the output end of the wind energy generation system, wave energy generation system, and ocean current energy generation system Both are connected to the transformer and input into the grid. The present invention is based on the support structure of the single-pile tower, and is vertically fixed on the seabed. The structure is convenient for processing, installation and construction, and the cost is low, which greatly reduces the cost of power generation; the selection of materials is extensive and the implementability is high .

Description

Wind energy - wave energy - ocean current energy integrated power generation system

technical field

The invention relates to a power generation system, in particular to a power generation system integrating wind energy, wave energy and ocean current energy, which combines wind energy, wave energy and ocean current energy on the basis of a single pile tower support structure.

technical background

my country's mainland coastline is more than 18,000 kilometers long from the mouth of the Yalu River to the mouth of the Beilun River. In addition, the coastline of the islands is more than 14,000 kilometers long, and the coastline of the mainland is more than 32,000 kilometers long. It can be seen from this that my country's marine resources are relatively rich, but until now the marine resources have not been well developed and utilized. The prosperity of a country, in addition to the role of social and economic development, energy also plays a relatively important role. Now the demand for energy is huge, and there is an urgent need to find new types of energy to replace fossil fuels. At present, wind energy, wave energy, and ocean current energy are non-polluting, non-fossil energy sources that are relatively abundant. They are endless renewable resources with huge potential. The market prospects for development and utilization are very optimistic, and they save precious land resources. Utilizing these resources has been a topic of contemporary research. Using marine energy to generate electricity is an important way to utilize marine resources. Wind power generation is very mature not only in the world but also in my country. The principle of wind power generation: the wind wheel rotates under the action of sea breeze Converted into mechanical energy, the mechanical energy provides power for the generator to realize wind power generation. The principle of wave energy power generation: use the up and down swing of the wave to push the floating body to move up and down, convert the up and down reciprocating motion into rotating motion, provide power for the generator, and realize wave energy generation. The principle of power generation of ocean current energy: the flow of seawater drives the rotation of the impeller, which converts the ocean current energy into mechanical energy, and the mechanical energy provides power for the generator to realize ocean current energy power generation.

Contents of the invention

In order to better utilize the energy brought by the ocean, the present invention proposes a power generation system integrating wind energy-wave energy-ocean current energy. In the ocean, a single-pile tower support structure is used to establish wind energy, wave energy, and ocean current energy. System-integrated power generation system, in which the buoy is anchored to the seabed with iron chains to form an integrated power generation system, and these three power generation systems are attached to the same single pile tower structure.

The technical scheme adopted in the present invention is:

The present invention includes a single pile tower and a wind power generation system installed on the single pile tower, a wave power generation system, and an ocean current power generation system. The single pile tower is vertically fixed on the seabed, and the wind power generation system is installed on the single pile tower. The top of the tower, the wave energy generation system is installed on the side of the monopile tower near the sea level, the ocean current energy generation system is installed at the bottom of the monopile tower on the seabed, the wind energy generation system, wave energy generation system, ocean current energy generation system The output terminals are all connected to the transformer and input into the power grid.

The wind energy generation system: the windmill is equipped with a wind wheel, a wind energy gear box, a tail rudder, a wind energy speed regulating mechanism, a wind energy generator and a wind energy converter; the power output end of the wind wheel and the power input end of the wind energy gear box Connect to increase the speed. The power output end of the wind energy gear box is passed through the wind energy speed regulating mechanism to make the output speed uniform. The speed regulating mechanism is connected to the input shaft of the wind energy generator, and the output end of the wind energy generator is connected to the wind energy converter. The input end of the windmill is connected to the input end of the wind energy converter, and the output end of the wind energy converter is connected to the input end of the transformer; the tail rudder is fixedly installed at the tail of the windmill. In order to achieve better energy capture effect.

The wave energy power generation system includes a buoy, a connecting rod mechanism, a wave energy gear box, a wave energy generator and a wave energy converter; the buoy floats on the sea surface, and two heavy objects are connected by a chain on both sides The heavy block sinks into the bottom of the sea, the buoy is hinged through the linkage mechanism and the edge of the gear, the slider of the linkage mechanism is fixedly connected with the buoy, the gear is connected with the input shaft of the wave energy generator through the wave energy gear box, and the wave energy The output end of the generator is connected to the input end of the wave energy converter, and the output end of the wave energy converter is connected to the input end of the transformer; the wave energy generator, gears and wave energy gear box are all fixed by the installation platform of the wave energy system on the side of the monopile tower. Among them, the connecting rod mechanism and the buoy form a slider four-bar mechanism, which changes the movement direction of the buoy, from the up and down movement to the movement driving the gear rotation, and then drives the current energy generator to generate electricity.

The ocean current energy power generation system: includes the same ocean current energy power generation device installed on both sides of the bottom of the single pile tower, the ocean current energy power generation device includes a water turbine impeller, an ocean current energy gear box, an ocean current energy generator and an ocean current energy converter; The power output end of the impeller of the water turbine is connected to the power input end of the ocean current energy gear box through the coupling shaft to increase the speed of the impeller. The power output end of the ocean current energy gear box is connected to the ocean current energy generator through the speed regulating mechanism The input end and the output end of the ocean current energy generator are connected to the input end of the ocean current energy converter, and the output end of the ocean current energy converter is connected to the input end of the transformer.

The monopile tower tube of the present invention includes its supporting structure, a supporting power transmission system and a transformer.

The invention rotates the wind wheel on the upper part to collect wind energy, and then drives the generator to generate electricity; the buoy in the middle reciprocates up and down to drive the generator to generate electricity; the impeller on the bottom collects ocean current energy, and then rotates to drive the generator to generate electricity.

There is a tail rudder at the tail of the windmill, which can turn around and rotate according to the wind direction, which can better collect sea breeze and achieve greater energy harvesting effect.

The middle part of the invention converts the up and down reciprocating motion of wave energy into rotational motion, which provides power for the operation of the generator and completes the power generation of wave energy.

Compared with previous inventions, the above structure of the present invention has the following advantages:

Through the structure of the present invention, wind energy, wave energy and ocean current energy can be collected at the same time for power generation, and the wind wheel can change direction when collecting wind energy to achieve greater capture energy for power generation, and the up and down reciprocating motion of the buoy can be converted to drive the generator rotation movement.

As an improvement, the connections used in the present invention are all detachable, which is convenient for disassembly and maintenance of partial failures and replacement of parts, without disassembling the whole system, which is convenient for maintenance and parts exchange.

Description of drawings

Fig. 1 is a structural diagram of the system of the present invention.

Fig. 2 is a schematic diagram of the structure and operation of the wave energy power generation system.

Fig. 3 is an enlarged top view of the ocean current energy power generation system.

In the figure: 1. Wind wheel, 2. Wind energy gear box, 3. Wind energy speed regulating mechanism, 4. Wind energy generator, 5. Tail rudder, 6. Wind energy converter, 7. Monopile tower, 8. Gear . 1. Wave energy generator input shaft, 18. Wave energy gear box, 19. Coupling shaft, 20. Ocean current energy gear box, 21. Ocean current energy system converter.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation steps.

As shown in Figure 1, the present invention includes a single pile tower 7 and a wind power generation system, a wave power generation system, and an ocean current power generation system installed on the single pile tower 7, and the single pile tower 7 is vertically fixed on the seabed, The wind energy generation system is installed on the top of the monopile tower 7, the wave energy generation system is installed on the side of the monopile tower 7 near sea level, and the ocean current energy generation system is installed at the bottom of the monopile tower 7 on the seabed. The output ends of the system, the wave energy generation system and the ocean current energy generation system are all connected to the transformer and input into the power grid.

As shown in Figure 1, the wind energy generation system: the windmill is equipped with a wind wheel 1, a wind energy gear box 2, a tail rudder 5, a wind energy generator 4 and a wind energy converter 6; The power input end of 2 is connected to adjust its rotating speed to make it increase, the power output end of wind energy gear box 2 is connected with the input shaft of wind energy generator 4 through wind energy speed regulating mechanism 3, and the output end of wind energy generator 4 is connected to the wind energy transformer The input end of the converter 6 is connected, and the output end of the wind energy converter 6 is connected to the input end of the transformer; the tail rudder 5 is fixedly installed at the tail of the windmill, and the tail rudder 5 is a vertically placed plate for adjusting the position of the wind wheel 1. The orientation makes it face the wind direction to increase its energy harvesting capability, and the tail rudder 5 also has a braking function, which has the function of protecting the windmill.

In the present invention, a speed regulating mechanism is installed between the gear box for increasing the rotating speed and the engine, so that the rotating speed remains stable and the damage to the generator is reduced.

As shown in Figure 2, the wave energy power generation system: includes a buoy 12, a connecting rod mechanism 10, a wave energy gear box 18, a wave energy generator 9 and a wave energy converter; Two heavy objects 14 are connected through a cable chain 13, the heavy object 14 sinks into the seabed, the buoy 12 is hinged through the edge of the connecting rod mechanism 10 and the gear 8, and the end of the connecting rod mechanism 10 and the buoy 12 fix the hinge, the gear 8 The wave energy gear box 18 is connected to the input shaft 17 of the wave energy generator, the output end of the wave energy generator 9 is connected to the input end of the wave energy converter, and the output end of the wave energy converter is connected to the input end of the transformer. The wave energy generator 9 , the gear 8 and the wave energy gear box 18 are all fixed on the side of the monopile tower 7 through the wave energy system installation frame 11 .

The connecting rod slider mechanism drives the gear to rotate, the gear drives the gear gearbox to move, the up and down oscillation of the wave drives the connecting rod slider mechanism to move, the connecting rod slider mechanism drives the gear gearbox to rotate, and then drives the engine to work.

As shown in Figure 3, the ocean current energy power generation system: includes the same ocean current energy power generation device installed on both sides of the bottom of the single pile tower 7, the ocean current energy power generation device includes a water turbine impeller 16, an ocean current energy gear box 20, and an ocean current energy generator 15 And the current energy system converter 21; the power output end of the water turbine impeller 16 is connected with the power input end of the ocean current energy gear box 20 through the connecting shaft 19, so as to adjust its rotating speed to increase, and the power of the ocean current energy gear box 20 The output end is connected to the ocean current energy generator 15 through the speed regulating mechanism, the output end of the ocean current energy generator 15 is connected to the input end of the ocean current energy converter 21, and the output end of the ocean current energy converter 21 is connected to the input end of the transformer .

Implementation case of the present invention and its implementation work process are as follows:

A monopile tower 7 is fixed on the seabed in the offshore area, and a windmill with a tail rudder 5 is installed on the upper end of the monopile tower structure 7, wherein the tail rudder 5 can adjust the orientation of the wind wheel to make it align with the wind direction, and the tail Rudder 5 also has braking function, has the function of protecting windmill. At the position behind the wind wheel 1, a gear box 2, a wind energy speed regulating mechanism 3, a generator 4 and a wind energy system converter 6 are installed. A speed regulating mechanism 3 is to be installed between the gear box for increasing the rotating speed and the engine, so that the rotating speed remains stable to reduce damage to the generator.

A wave energy installation platform 11 is installed on the single pile tower tube 7 at the lower end of the windmill, on which a wave energy generator 9, a wave energy power generation gear box 18, a gear 8 and a connecting rod mechanism 10 are placed, and a buoy 12 is set on the sea level. The four corners below the buoy 12 are connected with heavy objects 14 by chains 13 and fixed on the bottom of the sea so that the buoy 12 can only move up and down. The block linkage mechanism can convert the up and down reciprocating motion of the buoy 12 into a motion that drives the gear 8 to rotate, and then the rotational motion of the gear is brought to the rotational motion of the gear in the wave energy gear box 18, and the wave energy gear box 18 drives the wave Energy engine input shaft 17 rotates, provides the power of work for wave energy generator 9, has reached the purpose of generating electricity. Wherein the gear transmission can adjust its rotating speed to increase its speed.

A water turbine impeller 16 is installed at the bottom of the monopile tower structure 7, and the rotation of the impeller drives the gear box 20 to move, and after the speed increase, the connecting shaft 19 is driven to provide power for the current energy generator 15 to generate electricity.

After being rectified by the respective converters, the power generated by the present invention is uniformly connected to the transformer for voltage transformation, and then connected to the power grid to supply electricity to factories or residents.

Therefore, the single pile tower support structure adopted in the present invention is convenient to process, install and construct, and the cost is low; power generation, wave power generation and ocean current power generation are completed on one support structure, which greatly reduces the cost of power generation ; The structure is stable and reasonable, and the selection of materials is more extensive, which further proves the practicability of the present invention and has remarkable technical effects.

Claims (4)

1. A power generation system integrating wind energy-wave energy-ocean current energy, characterized in that it includes a single pile tower (7) and a wind energy generation system installed on the single pile tower (7), a wave energy generation system, an ocean current In the energy generation system, the monopile tower (7) is vertically fixed on the seabed, the wind power generation system is installed on the top of the monopile tower (7), and the wave energy generation system is installed on the monopile tower (7) near the sea level The side of the ocean current energy generation system is installed at the bottom of the monopile tower (7) on the seabed, and the output terminals of the wind energy generation system, wave energy generation system, and ocean current energy generation system are all connected to the transformer and input to the grid. 2. A wind energy-wave energy-sea current energy integrated power generation system according to claim 1, characterized in that: the wind power generation system: the windmill is equipped with a wind wheel (1), a wind energy gear box (2) , tail rudder (5), wind energy speed regulating mechanism (3), wind energy generator (4) and wind energy converter (6); the power output end of the wind wheel (1) and the power input of the wind energy gear box (2) The power output end of the wind energy gear box (2) is passed through the wind energy speed regulating mechanism (3) to make the output speed uniform, and the speed regulating mechanism (3) is connected with the input shaft of the wind energy generator (4), and the wind energy generator The output end of (4) is connected to the input end of the wind energy converter (6), and the output end of the wind energy converter (6) is connected to the input end of the transformer; 5) It is a vertically placed board, which is used to adjust the orientation of the wind wheel (1) so that it is aligned with the wind direction. 3. A power generation system integrating wind energy-wave energy-ocean current energy according to claim 1, characterized in that: said wave energy power generation system: includes a buoy (12), a connecting rod mechanism (10), a wave energy The gear box (18), the wave energy generator (9) and the wave energy converter; the buoy (12) floats on the sea surface, and each side of the buoy (12) is connected with two heavy objects ( 14), the weight block (14) sinks into the bottom of the sea, the buoy (12) is hinged through the edge of the linkage mechanism (10) and the gear (8), and the slider of the linkage mechanism (10) is fixedly connected with the buoy (12) , the gear (8) is connected to the input shaft (17) of the wave energy generator through the wave energy gear box (18), the output end of the wave energy generator (9) is connected to the input end of the wave energy converter, and the wave energy converter The output end of the converter is connected to the input end of the transformer; the wave energy generator (9), the gear (8) and the wave energy gear box (18) are all fixed on the monopile tower (7) through the wave energy system installation platform (11) ) side. 4. A wind energy-wave energy-ocean energy integrated power generation system according to claim 1, characterized in that: the ocean current energy power generation system: includes the same two sides installed on the bottom of the single pile tower (7) The ocean current energy generating device, the ocean current energy generating device includes a water turbine impeller (16), an ocean current energy gear box (20), an ocean current energy generator (15) and an ocean current energy converter (21); the power output of the water turbine impeller (16) The terminal is connected to the power input end of the current energy gear box (20) through the coupling shaft (19), and the power output end of the ocean current energy gear box (20) is connected to the input end of the ocean current energy generator (15) through the speed regulating mechanism. The output end of the ocean current energy generator (15) is connected to the input end of the ocean current energy converter (21), and the output end of the ocean current energy converter (21) is connected to the input end of the transformer.