CN114962127A - Wave energy and tidal current energy combined power generation device and power generation method - Google Patents

Abstract

The invention discloses a wave energy and tidal current energy combined power generation device and a power generation method, and belongs to the technical field of power generation devices.A flexible blade water turbine is sleeved in the middle of a support, a hemispherical hollow cover is installed at the upper section of the flexible blade water turbine, a buoyancy air bag is installed on the outer wall of a positioning piece, air in the hemispherical hollow cover enters and exits through a small hole on the top along with the change of pressure to form air flow, and a rotor above the small hole is driven to rotate, so that the power generation effect is achieved, even if the water surface has no large waves and fluctuation, a small sealed box is also arranged in the hemispherical hollow cover and used for loading a motor electric energy conversion piece, the generated electricity is stored in a storage battery, and a lead is externally connected to transmit the electricity to a power grid; the liquid level sensing piece through in the liquid sliding tray senses after the water level rises, can start the air pump and bleed and pour into and increase buoyancy in the buoyancy gasbag along with my too high time, prevents that it from being flooded the unable electric energy of gathering that leads to.

Description

A kind of wave energy, tidal current energy combined power generation device and power generation method

technical field

The invention relates to a combined power generation device, in particular to a combined power generation device of wave energy and tidal current energy, and belongs to the technical field of power generation devices.

Background technique

With the rapid development of the world economy, people's demand for energy is advancing day by day. However, due to its non-renewable nature, the reserves of conventional energy are decreasing day by day. At the same time, the environment generated by the use of conventional energy has become a serious problem for human survival and development. Challenge. At present, relevant institutions around the world are actively developing and utilizing renewable clean energy. There are abundant wind energy resources and vast flat areas at sea, making offshore wind power generation technology a hot application in recent years. my country's offshore wind energy is expected to reach 750 million kilowatts, which is three times the wind energy resources on land, and offshore wind farms will become the focus of future development.

Existing trends can have strong regularity and predictability. Due to the periodicity of tides, the change of tidal energy has strong regularity and can be predicted. The tidal energy development device is less affected by the environment. Compared with wind energy and solar energy, the energy density of tidal energy is higher, which is about 4 times that of solar energy and 30 times that of solar energy. The current wave energy density is low, unstable and difficult to use, but it accounts for 94% of all ocean energy. The use of wave energy is limited, mostly near the coastline, with a small scale and easy to use. Affected by the catastrophic marine climate, the development cost of tidal energy and wave energy is relatively high, and the investment recovery period is long. Therefore, a combined wave energy and tidal energy power generation device is urgently needed to solve the above problems.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a combined power generation device for wave energy and tidal current. Depending on the height of the equipment, it is retracted through the rewinding rod and the anchor chain; after positioning, the water surface does not pass the bottom of the hemispherical hollow hood, and the water surface to the top of the hollow hood is full of air. Punch a small hole at the top of the hollow hood and install it just above the small hole. A small rotor, with the flow of water, the water surface will rise and fall, allowing the air in the hemispherical hollow cover to flow in and out through the small holes on the top as the pressure changes, and drive the rotor above the small holes to rotate, so as to achieve power generation. Effect, even if there are no big waves and undulations on the water surface, the wind on the water surface can drive the rotor to rotate to generate electricity; a flexible blade turbine is installed between the base and the hollow cover, and its flexible blades are made of polymer film materials, canvas and other flexible blades. Made of materials, the structure is simple, the manufacture is convenient, and the maintenance, maintenance and replacement are easy, and the flexible blade has the advantages of light weight, low cost and corrosion resistance. The tidal current energy is mainly concentrated in the offshore shallow waters, especially in the straits, waterways and bay mouths, and the flow velocity in some areas is low. The flexible blade turbine can generate electricity stably at the flow velocity of 0.5m/s in the offshore prototype experiment; in the hemispherical hollow cover A small sealed box is also set up in the middle to load the electromechanical electric energy conversion parts, the generated electricity is stored in the battery, and a wire is connected to the outside to transmit the electricity to the power grid; when the water level rises, it passes through the liquid sliding tank The liquid level sensor is used for sensing, and when it is too high, the air pump can be activated to pump air and inject it into the buoyancy air bag to increase the buoyancy, preventing it from being submerged and unable to collect electricity.

Object of the present invention can be achieved by adopting the following technical solutions:

A wave energy and tidal current energy combined power generation device, comprising a base, a flexible blade turbine, a hemispherical hollow cover, a bracket, a positioning part, a buoyancy airbag, a wire, an engine power conversion part and seawater, a bracket is installed in the upper part of the base, and a middle sleeve of the bracket is provided. There is a flexible blade turbine, a hemispherical hollow cover is installed in the middle and upper section of the flexible blade turbine, a positioning piece is installed in the middle and lower section of the hemispherical hollow cover, a buoyancy airbag is installed on the outer wall of the positioning piece, the engine power conversion piece is installed in the middle and upper section of the base, and the wire is installed On one side of the middle and lower section of the engine power conversion part, a rotor sealed air pump assembly is installed on the middle and upper part of the hemispherical hollow cover, an air guide assembly is installed on the rotor sealed air pump assembly, a sliding sensing assembly is installed on the middle side of the engine power conversion part, and the base Screw assemblies are installed on three sides of the middle and upper sections, a limit winding assembly is installed at the bottom of the screw assembly, a spring anchor rod assembly is installed on the limit winding assembly, and seawater covers the middle and lower sections of the hemispherical hollow cover.

Preferably, the rotor-sealed air pump assembly includes an air pump, a rotor, a small hole and a sealing shell, the rotor is installed at the middle and upper section of the bracket, the small hole is opened at the middle and upper section of the hemispherical hollow cover, the sealing shell is installed at the middle and lower section of the small hole, and the rotor In cooperation with the small holes, the air pump is installed on both sides of the middle of the sealing shell.

Preferably, the air guide assembly includes an air guide pipe and an air intake pipe, the air guide pipe is installed at one end of the air pump, the air intake pipe is installed at the other end of the air pump, and one end of the air guide pipe is communicated with the buoyancy airbag, and the air intake pipe penetrates the middle and upper section of the sealing shell.

Preferably, the sliding sensing assembly includes a liquid sliding groove and a liquid level sensing member, the liquid sliding groove is installed at the middle side of the electric power conversion member of the engine, the liquid level sensing member is inserted into the middle of the liquid sliding groove, and the liquid sliding groove and The liquid level sensing elements cooperate with each other.

Preferably, the screw assembly includes a nut, a positioning screw and a screw, the nut is installed on three sides of the middle and lower section of the base, the positioning screw penetrates through the middle and lower section of the base and is connected to the nut, and the screw is installed at the bottom of the positioning screw.

Preferably, the limit winding assembly includes an anchor chain, a limit plate and a winding rod. One end of the anchor chain is installed at the middle and lower section of the screw, the limit plate is installed at the bottom of the anchor chain, and the winding rod is installed in the middle and upper section of the limit board. and the anchor chain is sleeved at the middle of the rewinding rod.

Preferably, the spring anchor rod assembly includes a limit spring and an anchor rod, the limit springs are sleeved on both sides of the middle of the winding rod, and the anchor rods are installed at the middle and lower sections of the limit plate.

Preferably, the middle and upper sections of the hemispherical hollow cover are hollow structures, and the flexible blade turbine rotates at a flow rate of 0.5m\s to generate electricity.

Preferably, the inside of the engine power conversion member is a hollow structure.

A power generation method of a wave energy and tidal current energy combined power generation device, comprising the following steps:

Step 1: The staff installs the anchor rod, limit plate, rewinding rod, anchor chain and base at the required position for positioning. After positioning, the rewinding rod and anchor chain are retracted and placed along with the height of the equipment;

Step 2: After positioning, the water surface does not pass the bottom of the hemispherical hollow cover. The water surface to the top of the hollow cover is full of air. Make a small hole at the top of the hollow cover, and install a small rotor just above the small hole. As the water flows, the water surface will The ups and downs allow the air in the hemispherical hollow cover to enter and exit through the small holes on the top as the pressure changes to form airflow, which drives the rotor above the small holes to rotate, so as to achieve the effect of power generation, even if there are no big waves and fluctuations on the water surface, The rotor can be rotated by the wind on the water surface to generate electricity;

Step 3: Install a flexible blade water turbine between the base and the hollow cover. The flexible blade is made of flexible materials such as polymer film material and canvas. It has a simple structure, is convenient to manufacture, and is easy to maintain, maintain and replace. At the same time, the flexible blade has weight The advantages of light weight, low cost and corrosion resistance.

Step 4: The tidal current energy is mainly concentrated in the offshore shallow waters, especially in the straits, waterways and bay mouths, where the flow velocity is low in some areas, and the flexible blade turbine can generate electricity stably at a flow velocity of 0.5m/s in the offshore prototype experiment;

Step 5: A small sealed box is also set in the hemispherical hollow cover, which is used to load the electromechanical energy conversion parts, store the generated electricity in the battery, and connect an external wire to transmit the electricity to the power grid;

Step 6: When the water level rises, it is sensed by the liquid level sensor in the liquid sliding tank. When the water level is too high, the air pump can be activated to pump air and inject it into the buoyancy air bag to increase the buoyancy, so as to prevent it from being submerged. Collect electrical energy.

Beneficial technical effects of the present invention:

The invention provides a combined power generation device for wave energy and tidal current energy. The staff installs the anchor rod, the limit plate, the winding rod, the anchor chain and the base at the required position for positioning. Retraction is carried out through the winding rod and the anchor chain; after positioning, the water surface does not pass the bottom of the hemispherical hollow hood, and the water surface to the top of the hollow hood is full of air. A small hole is punched at the top of the hollow hood, and a small rotor is installed just above the small hole. With the flow of water, the water surface will rise and fall, allowing the air in the hemispherical hollow cover to enter and exit through the small holes on the top as the pressure changes to form airflow, which drives the rotor above the small holes to rotate, so as to achieve the effect of power generation, even if the water surface There are no big waves and undulations, and the wind on the water surface can drive the rotor to rotate to generate electricity; a flexible blade turbine is installed between the base and the hollow cover, and its flexible blades are made of flexible materials such as polymer film materials and canvas. The structure is simple, the manufacture is convenient, and the maintenance, maintenance and replacement are easy, and the flexible blade has the advantages of light weight, low cost and corrosion resistance. The tidal current energy is mainly concentrated in the offshore shallow waters, especially in the straits, waterways and bay mouths, and the flow velocity in some areas is low. The flexible blade turbine can generate electricity stably at the flow velocity of 0.5m/s in the offshore prototype experiment; in the hemispherical hollow cover A small sealed box is also set up in the middle to load the electromechanical electric energy conversion parts, the generated electricity is stored in the battery, and a wire is connected to the outside to transmit the electricity to the power grid; when the water level rises, it passes through the liquid sliding tank The liquid level sensor is used for sensing, and when it is too high, the air pump can be activated to pump air and inject it into the buoyancy air bag to increase the buoyancy, preventing it from being submerged and unable to collect electricity.

Description of drawings

1 is a front view of the overall structure of the device according to a preferred embodiment of a combined wave energy and tidal current energy generating device and method of generating electricity according to the present invention;

FIG. 2 is an enlarged view of the structure at position A of a preferred embodiment of a combined wave energy and tidal current energy generating device and generating method according to the present invention;

3 is an enlarged view of the structure at position B of a preferred embodiment of a combined wave energy and tidal current energy power generation device and power generation method according to the present invention;

4 is a schematic structural diagram of an air inlet and outlet airbag according to a preferred embodiment of a wave energy and tidal current energy combined power generation device and a power generation method according to the present invention;

5 is a schematic structural diagram of a support anchor rod according to a preferred embodiment of a combined wave energy and tidal current energy generating device and generating method according to the present invention;

FIG. 6 is a schematic structural diagram of a hollow cover of a preferred embodiment of a combined wave energy and tidal current energy generating device according to the present invention.

In the picture: 1- Base, 2- Flexible blade turbine, 3- Hemispherical hollow cover, 4- Bracket, 5- Positioning piece, 6- Buoyancy airbag, 7- Conductor, 8- Engine power conversion piece, 9- Air pump, 10 - Air guide tube, 11- liquid sliding groove, 12- liquid level sensor, 13- nut, 14- set screw, 15- screw, 16- anchor chain, 17- limit plate, 18- take-up rod, 19- Limit spring, 20-anchor rod, 22-sea water, 23-rotor, 24-small hole, 25-sealing shell, 26-air intake pipe.

Detailed ways

In order to make the technical solution of the present invention clearer and clearer to those skilled in the art, the present invention will be described in further detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in FIGS. 1 to 6 , a combined wave energy and tidal current energy generating device provided in this embodiment includes a base 1 , a flexible blade turbine 2 , a hemispherical hollow cover 3 , a bracket 4 , a positioning member 5 , and a buoyancy airbag 6 , wire 7, engine power conversion part 8 and sea water 22, a bracket 4 is installed in the middle and upper section of the base 1, a flexible blade turbine 2 is set in the middle of the bracket 4, and a hemispherical hollow cover 3 is installed in the middle and upper section of the flexible blade turbine 2, and the hemispherical hollow A positioning member 5 is installed in the middle and lower section of the cover 3, a buoyancy airbag 6 is installed on the outer wall of the positioning member 5, an engine power conversion member 8 is installed at the middle and upper section of the base 1, and a wire 7 is installed at one side of the middle and lower section of the engine power conversion member 8. A rotor seal air pump assembly is installed on the middle and upper sections of the hollow cover 3, an air guide assembly is installed on the rotor seal air pump assembly, a sliding sensing assembly is installed on the middle side of the engine power conversion element 8, and a screw assembly is installed on the three sides of the middle and upper section of the base 1. A limit winding assembly is installed at the bottom of the assembly, a spring anchor rod assembly is installed on the limit winding assembly, and the seawater 22 covers the middle and lower sections of the hemispherical hollow cover 3 .

The general working principle: the staff installs the anchor rod 20, the limit plate 17, the winding rod 18, the anchor chain 16 and the base 1 at the required position for positioning. The anchor chain 16 is retracted; after positioning, the water surface does not pass the bottom of the hemispherical hollow cover 3, the water surface to the top of the hollow cover is full of air, a small hole 24 is punched at the top of the hollow cover, and a small rotor 23 is installed just above the small hole 24, With the flow of water, the water surface will fluctuate up and down, allowing the air in the hemispherical hollow cover 3 to enter and exit through the small holes 24 on the top as the pressure changes to form an air flow, which drives the rotor 23 above the small holes 24 to rotate, thereby achieving power generation. Even if there are no big waves and undulations on the water surface, the wind on the water surface can drive the rotor 23 to rotate to generate electricity; a flexible blade turbine 2 is installed between the base 1 and the hollow cover, and its flexible blades are made of polymer film material, Made of flexible materials such as canvas, the structure is simple, the manufacture is convenient, and it is easy to maintain, maintain and replace. At the same time, the flexible blade has the advantages of light weight, low cost and corrosion resistance. The tidal current energy is mainly concentrated in the offshore shallow waters, especially in the straits, waterways and bay mouths, and the flow velocity in some areas is low. A small sealed box is also set in the cover 3, which is used to load the motor electric energy conversion part 8, store the generated electricity in the storage battery, and connect a wire 7 outside to transmit the electricity to the power grid; when the water level rises, the liquid passes through the The liquid level sensor 12 in the sliding groove 11 is used for sensing, and when the level is too high, the air pump 9 can be activated to pump air and inject it into the buoyancy air bag 6 to increase the buoyancy, preventing it from being submerged and unable to collect electrical energy.

In the present embodiment: the rotor-sealed air pump assembly includes an air pump 9, a rotor 23, a small hole 24 and a sealing shell 25. The rotor 23 is installed at the middle and upper section of the bracket 4, and the small hole 24 is opened at the middle and upper section of the hemispherical hollow cover 3. The casing 25 is installed at the lower section of the small hole 24 , and the rotor 23 and the small hole 24 cooperate with each other.

In this embodiment: the air guide assembly includes an air guide tube 10 and an air intake tube 26, the air guide tube 10 is installed at one end of the air pump 9, the air intake tube 26 is installed at the other end of the air pump 9, and one end of the air guide tube 10 and the buoyancy airbag 6 are mutually In communication, the air intake pipe 26 penetrates through the upper section of the sealing shell 25 .

In this embodiment: the sliding sensing assembly includes a liquid sliding groove 11 and a liquid level sensing member 12 , the liquid sliding groove 11 is installed at the middle side of the engine power conversion member 8 , and the liquid level sensing member 12 is inserted into the liquid sliding groove 11, and the liquid sliding groove 11 and the liquid level sensing member 12 cooperate with each other.

In this embodiment: the screw assembly includes a nut 13, a positioning screw 14 and a screw 15, the nut 13 is installed on the three sides of the middle and lower section of the base 1, the positioning screw 14 penetrates the middle and lower section of the base 1 and is connected to the nut 13, and the screw 15 is installed at Set screw 14 at the bottom.

In this embodiment: the limit winding assembly includes an anchor chain 16, a limit plate 17 and a winding rod 18. One end of the anchor chain 16 is installed at the middle and lower section of the screw 15, and the limit plate 17 is installed at the bottom of the anchor chain 16. The rewinding rod 18 is installed at the middle and upper section of the limiting plate 17 , and the anchor chain 16 is sleeved on the middle of the rewinding rod 18 .

In this embodiment, the spring anchor rod assembly includes a limit spring 19 and an anchor rod 20 , the limit spring 19 is sleeved on both sides of the middle of the winding rod 18 , and the anchor rod 20 is installed at the middle and lower sections of the limit plate 17 .

In this embodiment, the upper and middle sections of the hemispherical hollow cover 3 are hollow structures, and the flexible blade turbine 2 rotates and generates electricity at a flow rate of 0.5m\s.

In this embodiment: the engine power conversion member 8 is a hollow structure

As shown in FIGS. 1 to 6 , the working process of a combined wave energy and tidal current energy generating device provided in this embodiment is as follows:

Step 1: The staff installs the anchor rod 20, the limit plate 17, the rewinding rod 18, the anchor chain 16 and the base 1 at the required positions for positioning. The chain 16 is retractable;

Step 2: After positioning, the water surface does not cover the bottom of the hemispherical hollow cover 3, the water surface to the top of the hollow cover is full of air, punch a small hole 24 on the top of the hollow cover, and install a small rotor 23 just above the small hole 24. As the pressure changes, the air in the hemispherical hollow cover 3 flows in and out through the small holes 24 on the top to form airflow, and drives the rotor 23 above the small holes 24 to rotate, so as to achieve the effect of power generation, even if the water surface There are no big waves and fluctuations, and the wind on the water surface can drive the rotor 23 to rotate to generate electricity;

Step 3: Install a flexible blade water turbine 2 between the base 1 and the hollow cover. The flexible blades are made of flexible materials such as polymer film material and canvas. The structure is simple, the manufacture is convenient, and it is easy to maintain, maintain and replace. At the same time, the flexible blades It has the advantages of light weight, low cost and corrosion resistance.

Step 4: The tidal current energy is mainly concentrated in the offshore shallow waters, especially in the straits, waterways and bay mouths, where the flow velocity is low in some areas, and the flexible blade turbine 2 can stably generate electricity at a flow velocity of 0.5m/s in the offshore prototype experiment;

Step 5: A small sealed box is also set in the hemispherical hollow cover 3, which is used to load the electromechanical energy conversion element 8, store the generated electricity in the storage battery, and connect an external wire 7 to transmit the electricity to the power grid;

Step 6: When the water level rises, it is sensed by the liquid level sensor 12 in the liquid sliding groove 11. When the water level is too high, the air pump 9 can be activated to pump air and inject it into the buoyancy air bag 6 to increase the buoyancy and prevent it from being damaged. The inundation leads to the inability to collect electricity.

The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Equivalent replacements or changes to the concept all belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a wave energy, trend can make up power generation facility which characterized in that: comprises a base (1), a flexible blade water turbine (2), a hemispherical hollow cover (3), a support (4), a positioning piece (5), a buoyancy airbag (6), a lead (7), an engine electric energy conversion piece (8) and seawater (22), wherein the support (4) is installed at the middle upper section of the base (1), the flexible blade water turbine (2) is sleeved in the middle of the support (4), the hemispherical hollow cover (3) is installed at the middle upper section of the flexible blade water turbine (2), the positioning piece (5) is installed at the middle lower section of the hemispherical hollow cover (3), the buoyancy airbag (6) is installed on the outer wall of the positioning piece (5), the engine electric energy conversion piece (8) is installed at the middle upper section of the base (1), the lead (7) is installed at one side of the middle lower section of the engine electric energy conversion piece (8), a rotor sealing air pump assembly is installed at the middle upper section of the hemispherical hollow cover (3), and an air guide assembly is installed on the rotor sealing air pump assembly, the sliding sensing assembly is installed on one side in the middle of the engine electric energy conversion piece (8), the screw assemblies are installed on three sides of the middle section of the base (1), the limiting winding assembly is installed at the bottom of the screw assemblies, the spring anchor rod assembly is installed on the limiting winding assembly, and the seawater (22) covers the middle-lower section of the hemispherical hollow cover (3).

2. The wave energy and tidal current energy combined power generation device according to claim 1, characterized in that: the rotor sealing air pump assembly comprises an air pump (9), a rotor (23), small holes (24) and a sealing shell (25), wherein the rotor (23) is installed at the middle upper section of the support (4), the small holes (24) are formed in the middle upper section of the hemispherical hollow cover (3), the sealing shell (25) is installed at the middle lower section of the small holes (24), the rotor (23) and the small holes (24) are mutually matched, and the air pump (9) is installed at the middle two sides of the sealing shell (25).

3. The wave energy and tidal current energy combined power generation device of claim 2, wherein: the air guide assembly comprises an air guide pipe (10) and an air inlet pipe (26), the air guide pipe (10) is installed at one end of the air pump (9), the air inlet pipe (26) is installed at the other end of the air pump (9), one end of the air guide pipe (10) is communicated with the buoyancy air bag (6), and the air inlet pipe (26) penetrates through the middle upper section of the sealing shell (25).

4. The wave energy and tidal current energy combined power generation device according to claim 3, characterized in that: the sliding sensing assembly comprises a liquid sliding groove (11) and a liquid level sensing part (12), the liquid sliding groove (11) is installed at one side of the middle of the engine electric energy conversion part (8), the liquid level sensing part (12) is inserted into the middle of the liquid sliding groove (11), and the liquid sliding groove (11) and the liquid level sensing part (12) are matched with each other.

5. The wave energy and tidal current energy combined power generation device according to claim 4, wherein: the screw assembly comprises a nut (13), a positioning screw (14) and a screw (15), the nut (13) is installed on three sides of the middle-lower section of the base (1), the positioning screw (14) penetrates through the middle-lower section of the base (1) and is connected with the nut (13) in each other, and the screw (15) is installed at the bottom of the positioning screw (14).

6. The wave energy and tidal current energy combined power generation device of claim 5, wherein: the limiting winding assembly comprises an anchor chain (16), a limiting plate (17) and a winding rod (18), one end of the anchor chain (16) is installed at the middle-lower section of the screw (15), the limiting plate (17) is installed at the bottom of the anchor chain (16), the winding rod (18) is installed at the middle-upper section of the limiting plate (17), and the anchor chain (16) is sleeved at the middle of the winding rod (18).

7. The wave energy and tidal current energy combined power generation device of claim 6, wherein: the spring anchor rod assembly comprises a limiting spring (19) and an anchor rod (20), the limiting spring (19) is sleeved on two sides of the middle of the winding rod (18), and the anchor rod (20) is installed on the middle lower section of the limiting plate (17).

8. The wave energy and tidal current energy combined power generation device according to claim 7, characterized in that: the upper section of the hemispherical hollow cover (3) is of a hollow structure, and the flexible blade water turbine (2) rotates at the flow speed of 0.5m/s to generate electricity.

9. The wave energy and tidal current energy combined power generation device of claim 8, wherein: the inside of the engine electric energy conversion part (8) is of a hollow structure.

10. The power generation method of the wave energy and tidal energy combined power generation device according to claim 9, characterized in that: the method comprises the following steps:

step 1: the anchor rod (20), the limiting plate (17), the winding rod (18), the anchor chain (16) and the base (1) are installed at required positions by workers for positioning, and the anchor rod (18) and the anchor chain (16) are wound and unwound along with the height of equipment after the positioning;

step 2: after the positioning is finished, the water surface is submerged at the bottom of the semi-spherical hollow cover (3), air is filled from the water surface to the top of the hollow cover, a small hole (24) is formed in the top of the hollow cover, a small rotor (23) is arranged right above the small hole (24), the water surface can fluctuate along with the flow of water, the air in the semi-spherical hollow cover (3) enters and exits through the small hole (24) on the top along with the change of pressure to form air flow, the rotor (23) above the small hole (24) is driven to rotate, the power generation effect is achieved, and even if the water surface has no large waves and fluctuations, the rotor (23) can be driven to rotate by the wind on the water surface to generate power;

and step 3: a flexible blade hydraulic turbine (2) is installed between a base (1) and a hollow cover, flexible blades of the flexible blade hydraulic turbine are made of flexible materials such as polymer film materials and canvas, the flexible blade hydraulic turbine is simple in structure, convenient to manufacture and easy to maintain, maintain and replace, and meanwhile the flexible blades have the advantages of being light in weight, low in manufacturing cost and corrosion resistant.

And 4, step 4: tidal current energy is mainly concentrated in offshore shallow water sea areas, particularly straits, water channels and gulf mouths, the flow velocity of partial areas is low, and the flexible blade water turbine (2) can stably generate electric energy at the flow velocity of 0.5m/s in an offshore prototype experiment;

and 5: a small sealed box is also arranged in the hemispherical hollow cover (3) and is used for loading a motor power conversion part (8), the generated electricity is stored in a storage battery, and a lead (7) is externally connected and transmits the electricity to a power grid;

step 6: after the water level rises, the liquid level sensing piece (12) in the liquid sliding groove (11) is used for sensing, and the air pump (9) can be started to pump air and inject the pumped air into the buoyancy air bag (6) to increase buoyancy when the water level rises too high, so that the situation that the water level is submerged to cause incapability of collecting electric energy is prevented.

Images