CN118757308A - Ocean current power generation device - Google Patents

Abstract

The invention discloses a ocean current power generation device, which comprises a left mounting box and a right mounting box, wherein a generator is arranged in one or two mounting boxes; a rotating shaft connected with the generator is arranged between the two mounting boxes, and a plurality of wave-proof wheels are arranged on the rotating shaft; the wave-proof wheel is provided with a plurality of fan-shaped water inlets along the circumferential direction, and one side of each water inlet is rotatably provided with at least one water retaining sheet; when seawater enters from one side of the water inlet, the water retaining plate rotates forward to enable the seawater to push the impeller to rotate for power generation, and when seawater enters from the other side of the water inlet, the water retaining plate rotates reversely to enable the seawater not to push the impeller to rotate reversely; the device can generate electricity by using ocean currents and has a simple structure.

Description

Ocean current power generation device

Technical Field

The present invention relates to power generation equipment, in particular to a sea current power generation device

Background Art

Ocean current power generation is a renewable energy technology that uses the kinetic energy of water in the ocean to convert it into electrical energy. The working principle of ocean current power generation is to install specially designed turbine devices on the seabed or underwater, use the power of the water flow to rotate the turbine and drive the generator to generate electricity.

The periodic movement of seawater under the tidal force of celestial bodies (mainly the moon and the sun) includes tides and tidal currents. It is customary to call the vertical rise and fall of the sea surface tides, and the horizontal flow of seawater tidal currents. When using tidal currents to generate electricity, the turbine that drives the generator to rotate is placed in the seawater. The back-and-forth fluctuations of the ocean currents have opposite movement directions, which will drive the turbine to rotate in the opposite direction. In this way, the turbine cannot rotate continuously in one direction to generate electricity, making it impossible to effectively generate electricity or the power generation efficiency is low. In order to solve this problem, a Chinese invention patent application with publication number CN102536616A discloses a tidal current power generation turbine, including: a generator rotor, a transmission shaft is arranged at both ends of the generator rotor, and the transmission shafts at both ends are respectively connected to a first impeller and a second impeller through a one-way transmission device, and the blades of the first impeller and the second impeller are opposite in inclination. The turbine includes a casing, and the first impeller and the second impeller are arranged in the casing. The part of the casing that accommodates the first impeller is connected to the first bundle of water pipes outwardly, and the part of the casing that accommodates the second impeller is connected to the second bundle of water pipes outwardly. The diameters of the first bundle of water pipes and the second bundle of water pipes gradually increase outward from the connection with the casing to form an involute shape to facilitate the convergence of the incoming tidal current. The present invention can realize high-efficiency power generation without manual operation or computer control under the condition of reciprocating water flow, and simplifies the system, which is conducive to the industrialization of tidal power generation and the development of small power stations and independent power systems of ocean energy.

Although the above device can spontaneously adjust its operation mode according to the incoming flow conditions to adapt to the horizontal reciprocating flow of the tide to generate electricity, it needs to set two impellers with opposite directions in relative directions, and each impeller must be provided with a one-way transmission device to limit it to only rotate in one direction. The overall structure of the device is still relatively complex.

Summary of the invention

Purpose of the invention: The purpose of the invention is to provide a sea current power generation device with a simple structure.

Technical solution: A current power generation device described in the present invention includes two left and right installation boxes, one or both of which are equipped with a generator; a rotating shaft connected to the generator is installed between the two installation boxes, and a plurality of wave-breaking wheels are installed on the rotating shaft; the wave-breaking wheel is provided with a plurality of fan-shaped water inlets along the circumference, and at least one water retaining plate is rotatably provided on one side of the water inlet; when seawater enters from one side of the water inlet, the water retaining plate rotates forward so that the seawater pushes the wave-breaking wheel to rotate and generate electricity, and when seawater enters from the other side of the water inlet, the water retaining plate rotates reversely so that the seawater does not push the wave-breaking wheel to rotate reversely.

Based on the above technical solution, the axial direction of the wave-breaking wheel is set to be perpendicular to the flow direction of seawater. When the seawater rushes to the shore, the seawater can drive the water retaining plate to rotate in the forward direction to form an axial closed interface to prevent the seawater from flowing in the wave-breaking wheel. In this way, the seawater continues to flow toward the coast and pushes the wave-breaking wheel to rotate, thereby driving the rotating shaft of the generator to rotate for power generation; when the seawater flows in the opposite direction, that is, away from the coast, the seawater will drive the water retaining plate to rotate in the reverse direction to allow the seawater to flow in the wave-breaking wheel, and will not push the wave-breaking wheel to reverse, so that the wave-breaking wheel maintains its original rotation direction. In this way, the reciprocating flow of seawater will not hinder the wave-breaking wheel from continuously rotating in a certain direction, so that the generator can generate electricity normally. At the same time, using the seawater rushing toward the coast to generate electricity also reduces the impact of seawater on the coast.

Preferably, a shaft sleeve is provided in the wave-breaking wheel, and a water retaining plate is arranged between the arc surface of the wave-breaking wheel and the shaft sleeve.

Preferably, the wave-breaking wheel is provided with blocking blocks on both sides of the water retaining plate to limit its rotation angle.

Preferably, the blocking block comprises a wing plate and a web plate connected in a T-shape, the hinged end of the water retaining plate is in contact with the wing plate and web plate of one blocking block on both sides, and the movable end can be in contact with the wing plate of the other blocking block.

Preferably, the blocking block comprises a short side and a long side connected in an L shape, the hinged end of the water retaining plate abuts against the short side and the long side of one blocking block on both sides, and the movable end can abut against the short side of the other blocking block.

Preferably, it also includes a warning device to warn if foreign objects hit the power generation device.

Preferably, the warning device includes a plurality of warning lights and a motion mechanism, the motion mechanism includes a vertical swing mechanism and a transverse rotation mechanism, the vertical swing mechanism is connected to the transverse rotation mechanism, the vertical swing mechanism is used to drive the warning light to swing in the vertical plane; the transverse rotation mechanism is connected to the installation box, and is used to drive the warning light to rotate in the transverse plane.

The above-mentioned warning device can use a light sensor to turn on the warning light, the vertical swing mechanism and the horizontal rotation mechanism at night, so that the warning light swings in the vertical plane and rotates in a circle in the horizontal plane to warn, thereby increasing the illumination range of the warning light, avoiding the difficulty of existing ocean current power generation equipment to be detected at night, and preventing ships from colliding with ocean current power generation equipment, causing the ocean current power generation equipment to be broken and damaged, thereby improving the safety and reliability of the device.

Preferably, a light sensor and a controller are provided on the top of the installation box, and the light sensor is electrically connected to the controller; the controller is electrically connected to the warning light, the vertical swing mechanism and the horizontal rotation mechanism respectively.

Preferably, a filter device is provided in front of the wave-breaking wheel.

Preferably, the filter device comprises a filter arc plate and a scraper, and the scraper can be fitted on the surface of the filter arc plate and move back and forth.

The above-mentioned filter device can use the filter arc plate to block the impurities suspended in the ocean current, prevent the suspended impurities from entering the wave-breaking wheel, and make the wave-breaking wheel blocked and difficult to enter the ocean current, so as to ensure the normal operation. The scraper can fit the filter arc plate and move back and forth to move the suspended impurities blocked by the filter arc plate, so that the suspended impurities are separated from the filter arc plate, avoiding the suspended impurities from blocking the filter holes, and realizing the self-cleaning function of the filter device.

Beneficial effect: Compared with the prior art, the present invention has the following significant effects: power generation can be achieved by utilizing ocean currents through a single wave-breaking wheel, and there is no need to set up two opposing impellers for the wave-breaking wheel, nor is there a need to set up a separate one-way transmission device for each impeller. The structure is simple, easy to manufacture, and has a low cost.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is a schematic diagram of the disassembly of the present invention;

FIG3 is a schematic diagram of a partial enlarged structure of point A in FIG2;

FIG4 is a schematic diagram of the disassembled structure of the warning device;

FIG5 is a partial enlarged schematic diagram of the filter device and the carrying box;

FIG6 is a schematic diagram of the structure of a wave-breaking wheel;

FIG7 is a cross-sectional view of a wave-breaking wheel;

FIG8 is a schematic diagram of the structure of a water retaining plate and a T-shaped retaining block;

FIG. 9 is a schematic diagram of the structure of the water retaining plate and the L-shaped retaining block.

DETAILED DESCRIPTION

As shown in the figure, a seawater power generation device provided by the present invention includes two left and right installation boxes 1, a generator 2, a wave-breaking wheel 3, an alarm device 4 and a filter device 5, at least one of the two installation boxes 1 is provided with a generator 2; a rotating shaft connected to the generator 2 is rotatably connected between the two installation boxes 1, and a plurality of wave-breaking wheels 3 are provided on the rotating shaft, and the generator 2 is driven to work by the wave-breaking wheels 3; the alarm device 4 is arranged on the installation box 1, and the filter device 5 is connected between the two installation boxes 1.

The wave-breaking wheel 3 is hollow inside and is provided with a plurality of fan-shaped water inlets 3-1 in the circumference thereof. The water inlets 3-1 may be set larger than those in FIG. 6 and FIG. 7 so that seawater can flow in and out of the wave-breaking wheel 3 better. Preferably, the water inlets 3-1 are equidistantly distributed in a ring shape on the wave-breaking wheel 3.

A shaft sleeve 3-3 is provided in the middle of the wave-breaking wheel 3, and at least one water retaining plate 3-2 is hinged between the arc surface between adjacent water inlets 3-1 and the shaft sleeve 3-3. When seawater enters from one side of the water inlet 3-1, the water retaining plate 3-2 rotates forward to prevent seawater from flowing in the wave-breaking wheel 3, and the wave-breaking wheel 4 is driven by the seawater to rotate and generate electricity. When seawater enters from the other side of the water inlet 3-1, the water retaining plate 3-2 rotates reversely to allow seawater to flow in the wave-breaking wheel 3, and the wave-breaking wheel 3 maintains the same rotation direction.

Stop blocks 3-4 are provided on both sides of the water retaining plate 3-2 to limit the rotation angle of the water retaining plate 3-2.

Preferably, the blocking block 3-4 includes a web and a wing plate connected in a T-shape, and the hinged end of the water retaining plate 3-2 is in contact with the wing plate and the web of the adjacent blocking block 3-4, that is, the hinged end of the water retaining plate 3-2 is arranged to be circular and fits the wing plate and the web and can rotate at the same time; the water retaining plate 3-2 can only rotate within a range of 90° between the wing plate and the web; the movable end of the water retaining plate 3-2 can be in contact with the wing plate of another blocking block 3-4 in the adjacent blocking block 3-4; preferably, the wing plates of the blocking blocks 3-4 in the same row are located in the same plane, and the web plates are parallel to each other.

When the movable end of the water retaining sheet 3-2 is also in contact with the wing plate of the blocking block 3-4 away from the hinged end, the water retaining sheet 3-2 blocks the gap between two adjacent blocking blocks 3-4. When all the water retaining sheets 3-2 block the gaps between the blocking blocks 3-4, the water retaining sheets 3-2 and the blocking blocks 3-4 form a closed interface in the wave-breaking wheel 3 to prevent seawater from flowing freely in the wave-breaking wheel 3. In this way, when the seawater continues to flow in the direction of pushing the movable end of the water retaining sheet 3-2 to contact with the wing plate of the blocking block 3-4, it will push the water retaining sheet 3-2 and the blocking block 3-4, thereby driving the wave-breaking wheel 3 to rotate; and when the seawater flows in the opposite direction to the above-mentioned direction, the movable end of the water retaining sheet 3-2 will be pushed away from the wing plate of the blocking block 3-4. At this time, the gaps between the adjacent blocking blocks 3-4 are reopened, and the seawater can flow freely in the wave-breaking wheel 3 without driving the wave-breaking wheel 3 to rotate in the opposite direction.

In addition to the above structure, the blocking block 3-4 can also be an L-shaped structure consisting of a short side and a long side. The hinged end of the water retaining plate 3-2 is in contact with the short side and the long side of one of the blocking blocks 3-4 on both sides at the same time, and the movable end can be in contact with the short side of the other blocking block 3-4; the water retaining plate 3-2 can only rotate within a range of 90° between the short side and the long side; when the movable end of the water retaining plate 3-2 is in contact with the short side of the blocking block 3-4 away from the hinged end, the gap between the adjacent blocking blocks 3-4 is blocked, so that the sea water drives the wave-breaking wheel 3 to rotate. The principle is the same as above and will not be repeated.

A positioning device is provided on the seabed to limit the movement of the installation box 1 within a certain range. The positioning device can adopt positioning piles and ropes. The positioning piles are fixed on the seabed, and the two ends of the rope are respectively connected to the positioning piles and the installation box 1. The installation box 1 can be used to position the device and suspend it on the sea surface; the installation box 1 is a hollow box, and the generator 2 is installed inside it.

The warning device 4 includes a plurality of warning lights 4-12 and a motion mechanism, wherein the motion mechanism includes a vertical swing mechanism and a horizontal rotation mechanism, wherein the vertical swing mechanism is connected to the horizontal rotation mechanism, and the vertical swing mechanism is used to drive the warning light 4-12 to swing in the vertical plane; the horizontal rotation mechanism is connected to the installation box 1, and is used to drive the warning light 4-12 to rotate in the horizontal plane.

The vertical swing mechanism includes a rotating rod 4-10 and a first driving mechanism. The warning light 4-12 is connected to the rotating rod 4-10 through a T-shaped swing frame 4-11. Of course, the swing frame 4-11 can also be just a vertical rod, or a vertical rod with multiple cross bars connected to the top, and each cross bar is connected to a warning light 4-12 at the end; the axis of the rotating rod 4-10 is horizontally arranged, and the first driving mechanism is used to drive the rotating rod 4-10 to rotate.

In one embodiment, the first driving mechanism can be a first motor connected to the rotating rod 4-10, and the motor drives the rotating rod 4-10 to intermittently rotate forward and reverse, thereby driving the warning light 4-12 to move in the vertical plane.

In another embodiment, the first driving mechanism includes a rotating rod 4-4, a first worm 4-2 and a first motor, wherein the rotating rod 4-4 is rotatably connected to the mounting box 1; a main bevel gear 4-5 is provided on the top of the rotating rod 4-4, and a first worm gear 4-3 matching the first worm 4-2 is provided on the bottom; the first worm 4-2 is rotatably connected to the mounting box 1, and the first motor is connected to the first worm 4-2; a secondary bevel gear 4-9 meshing with the main bevel gear 4-5 is provided on the rotating rod 4-10.

When in use, the first motor drives the first worm gear 4-2 to rotate, which in turn drives the first turbine 4-3 to drive the rotating rod 4-4 to rotate. The rotation of the rotating rod 4-4 will drive the main bevel gear 4-5 to rotate. The main bevel gear 4-5 drives the secondary bevel gear 4-9 to rotate, thereby driving the rotating rod 4-10 to rotate. The rotation of the rotating rod 4-10 will drive the swing frame 4-11 and the warning light 4-12 to rotate in the vertical plane. The first motor is also connected to a bidirectional relay to achieve intermittent forward and reverse rotation.

The lateral rotation mechanism includes a bearing device and a second driving mechanism. The bearing device can be a device such as a U-shaped frame or a mounting plate. In this example, it is a U-shaped frame. The rotating rod 4-10 is rotatably connected between the two side plates of the U-shaped frame. If the first driving mechanism has only the first motor, then the first motor is also arranged on the side plate of the U-shaped frame; if the first driving mechanism is a structure in another embodiment, then the rotating rod 4-4 is rotatably connected to the bottom plate of the U-shaped frame; a support seat 4-1 is provided on the top of the mounting box 1, and the bearing device is rotatably connected to the support seat 4-1.

When the first driving mechanism is only a first motor, the second driving mechanism can be a second motor connected to a supporting mechanism, and the axis of the second motor is vertically arranged; the second motor drives the supporting mechanism, the rotating rod 4-10, the warning light 4-12 and the first motor to rotate in a horizontal plane.

When the first driving mechanism is the structure in another embodiment, the second driving mechanism includes a hollow support 4-6, a second worm 4-8 and a second motor. The hollow support 4-6 is rotatably connected to the support base 4-1, the axis of the hollow support 4-6 is vertically arranged, and the top of the hollow support 4-6 is connected to the bearing device, and the bearing device is provided with a through hole matching the hollow support 4-6; the rotating rod 4-4 passes through the through hole of the bearing device and is sleeved in the hollow support 4-6, and the main bevel gear 4-5 is located above the through hole of the bearing device; the second worm 4-8 is rotatably connected to the mounting box 1, and the bottom of the hollow support 4-6 is provided with a second worm wheel 4-7 matching the second worm 4-8. It should be noted that the first worm wheel 4-3 is located below the second worm wheel 4-7, and the rotating rod 4-4 is provided with a thrust bearing between the first worm wheel 4-3 and the second worm wheel 4-7, so that the two worm wheels do not interfere with each other when rotating; the second motor is connected to the second worm 4-8.

When in use, the second worm gear 4-8 is driven to rotate by the second motor, so that the second turbine 4-7 and the hollow sleeve 4-6 are rotated, and then the entire carrying device, the rotating rod 4-10 and the warning light 4-12 are driven to rotate in the horizontal plane; during the rotation process, the main bevel gear 4-5 and the secondary bevel gear 4-9 remain in a meshing state; the second motor can also be connected to a bidirectional relay to achieve intermittent forward and reverse rotation.

Through the cooperation of the vertical swing mechanism and the lateral rotation mechanism, the warning light 4-12 can be swung in the vertical plane and rotated in the horizontal plane to increase the illumination range of the warning light 4-12, making it easier to be found and preventing ships from accidentally hitting the device at night.

A light sensor 4-13 and a controller may also be provided on the top of the installation box 1, and the light sensor 4-13 is electrically connected to the controller; the controller is electrically connected to the warning light 4-12, the vertical swing mechanism and the horizontal rotation mechanism respectively, and only when the light intensity signal transmitted by the light sensor 4-13 is lower than the set threshold, the controller controls the various electrical components connected to it to work.

The filter device 5 includes a filter arc plate 5-3 that matches the wave-breaking wheel 3, and a plurality of filter holes 5-4 are provided on the filter arc plate 5-3. The filter arc plate 5-3 is connected between two installation boxes 1; the radial cross-section of the filter arc plate 5-3 can be a semicircle as shown in Figures 1, 2 and 5, but the actual curvature can also be set larger to cover a wider range of the wave-breaking wheel group.

A scraper 5-6 is slidably connected to the filter arc plate 5-3, and the scraper 5-6 fits the surface of the filter arc plate 5-3. The scraper 5-6 can move back and forth on the surface of the filter arc plate 5-3 to scrape off various suspended impurities attached to the surface; a driving mechanism is provided on the installation box 1 to drive the scraper 5-6 to slide.

The driving mechanism includes a lead screw 5-1 and a ball slider 5-5 matched therewith, and the scraper 5-6 is connected to the ball slider 5-5; the bearing box 1 or the suspension box 2 is provided with a driving device for driving the lead screw 5-1 to rotate.

In one embodiment, the driving device is the first worm 4-2 and the first motor, and the second worm 4-2 and the driving screw 5-1 are coaxially connected, and both are driven to rotate by the first motor.

In another embodiment, the driving device may be a third motor.

A limiting bracket 5-2 is provided on the top of the filtering arc plate 5-3, and the ball slider 5-5 is slidably connected to the limiting bracket 5-2.

The filter device 5 can filter the suspended impurities in the seawater to prevent the suspended impurities from entering the wave-breaking wheel 3 and blocking the water inlet 3-1 so that the device cannot be used normally.

Claims (10)

1. A sea current power generation device, characterized in that the power generation device comprises two left and right installation boxes (1), wherein one or both installation boxes (1) are provided with a generator (2); a rotating shaft connected to the generator (2) is installed between the two installation boxes (1), and a plurality of wave-breaking wheels (3) are installed on the rotating shaft; the wave-breaking wheel (3) is provided with a plurality of fan-shaped water inlets (3-1) along the circumference, and at least one water retaining plate (3-2) is rotatably provided on one side of the water inlet (3-1); when seawater enters from one side of the water inlet (3-1), the water retaining plate (3-2) rotates forward so that the seawater pushes the wave-breaking wheel (3) to rotate and generate electricity, and when seawater enters from the other side of the water inlet (3-1), the water retaining plate (3-2) rotates reversely so that the seawater does not push the wave-breaking wheel (3) to rotate reversely. 2. A sea current power generation device according to claim 1, characterized in that a shaft sleeve (3-3) is provided inside the wave-breaking wheel (3), and a water retaining sheet (3-2) is provided between the arc surface of the wave-breaking wheel (3) and the shaft sleeve (3-3). 3. A sea current power generation device according to claim 2, characterized in that: the wave-breaking wheel (3) is provided with blocking blocks (3-4) on both sides of the water retaining plate (3-2) to limit its rotation angle. 4. A sea current power generation device according to claim 3, characterized in that: the blocking block (3-4) comprises a wing plate and a web plate connected in a T-shape, the hinged end of the water retaining plate (3-2) is in contact with the wing plate and the web plate of one of the blocking blocks (3-4) on both sides, and the movable end can be in contact with the wing plate of the other blocking block (3-4). 5. A sea current power generation device according to claim 3, characterized in that: the blocking block (3-4) comprises a short side and a long side connected in an L shape, the hinged end of the water retaining plate (3-2) is in contact with the short side and the long side of one of the blocking blocks (3-4) on both sides, and the movable end can be in contact with the short side of the other blocking block (3-4). 6. The ocean current power generation device according to claim 1, characterized in that it also includes a warning device (4) for reminding foreign objects to hit the power generation device. 7. A sea current power generation device according to claim 6, characterized in that: the warning device (4) comprises a plurality of warning lights (4-12) and a motion mechanism, the motion mechanism comprises a vertical swing mechanism and a horizontal rotation mechanism, the vertical swing mechanism is connected to the horizontal rotation mechanism, the vertical swing mechanism is used to drive the warning light (4-12) to swing in a vertical plane; the horizontal rotation mechanism is connected to the installation box (1), and is used to drive the warning light (4-12) to rotate in a horizontal plane. 8. A sea current power generation device according to claim 7, characterized in that: a light sensor (4-13) and a controller are provided on the top of the installation box (1), and the light sensor (4-13) is electrically connected to the controller; the controller is electrically connected to the warning light (4-12), the vertical swing mechanism and the horizontal rotation mechanism respectively. 9. The ocean current power generation device according to claim 1, characterized in that a filter device (5) is provided in front of the wave-breaking wheel (3). 10. A sea current power generation device according to claim 9, characterized in that: the filter device (5) comprises a filter arc plate (5-3) and a scraper (5-6), and the scraper (5-6) can be attached to the surface of the filter arc plate (5-3) and move back and forth.