CN112900386B

CN112900386B - Tidal power generation system with high power generation efficiency

Info

Publication number: CN112900386B
Application number: CN202110068866.6A
Authority: CN
Inventors: 辅程程
Original assignee: Huzhou Lizhuo Machinery Equipment Technology Development Co Ltd
Current assignee: Huzhou Lizhuo Machinery Equipment Technology Development Co Ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2022-07-12
Anticipated expiration: 2041-01-19
Also published as: CN112900386A

Abstract

The invention discloses a tidal power generation system with high power generation efficiency, which comprises a dam body, wherein a water through hole and an adjusting cavity are formed in the dam body, the dam body is connected with a rotating shaft in a penetrating and rotating mode through a bearing, one end of the rotating shaft penetrates and extends into the water through hole and is fixedly connected with a power generator, the other end of the rotating shaft penetrates and extends into the adjusting cavity and is welded with a rotating disc, the side wall of the rotating disc is connected with the side wall in the adjusting cavity in a sealing and sliding mode, an adjusting plate is welded on the upper surface of the rotating disc and is connected with the side wall in the adjusting cavity in a sealing and sliding mode, and filter screens are arranged at two ends of the water through hole. Has the advantages that: the power generation system can generate power bidirectionally when the tide rises and falls, greatly improves the power generation efficiency, simultaneously can prevent marine organisms and garbage from disturbing the power generator, carries out self-cleaning on the filter screen, and actively reduces the rotating speed when the power generator is over-speed, thereby preventing the long-time high-load service life of the power generator from being shortened.

Description

Tidal power generation system with high power generation efficiency

Technical Field

The invention relates to the technical field of new energy, in particular to a tidal power generation system with high power generation efficiency.

Background

Along with the continuous development of science and technology and industry, the demand of energy sources is gradually increased, traditional energy sources such as petroleum and coal are all non-renewable energy sources, namely the total amount is constant, the energy sources are used a little by a little, and the energy sources are always used up for one day, so that people pay more and more attention to the use of renewable energy sources such as solar energy, wind energy, tidal energy and the like, the tidal energy generates electricity through the potential difference generated during the rising tide and the falling tide of the sea, and water is stored in a sponge building reservoir during the rising tide and discharged during the falling tide.

Among the prior art, current tidal power generation machine station often can only one-way electricity generation, only can utilize one-way potential energy generator when rising tide and ebb tide promptly, generating efficiency is lower, and the organism in the ocean easily disturbs the normal work of generator with rubbish, the blade of generator also can produce the injury to marine organism simultaneously, simultaneously when the velocity of water is very fast, can make the generator rotational speed too fast, long-time high load operation can make the life-span of generator shorten, for this, we have proposed a tidal power generation system that generating efficiency is high.

Disclosure of Invention

The invention aims to solve the problems that the prior art is low in power generation efficiency, incapable of preventing marine organisms and garbage and free of overspeed adjustment, and provides a tidal power generation system with high power generation efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a tidal power generation system that generating efficiency is high, includes the dam body, seted up water hole, adjustment chamber in the dam body, the dam body runs through the rotation through the bearing and is connected with the axis of rotation, axis of rotation one end runs through and extends to in the water hole and fixedly connected with generator, the axis of rotation other end runs through and extends to the adjustment intracavity and has the rolling disc in the welding, the sealing sliding connection of rolling disc lateral wall and adjustment intracavity lateral wall, rolling disc upper surface welding has the adjusting plate, adjusting plate and the sealing sliding connection of adjustment intracavity lateral wall, it all is provided with the filter screen to cross the water hole both ends, be provided with rotating device and anti-overspeed device in the dam body.

In foretell tidal power generation system that generating efficiency is high, rotating device includes two mounting grooves of seting up at the dam body, the pressure plate has been cup jointed in the sealed slip of mounting groove, the lateral wall welding that the pressure plate is close to rolling disc one side has the magnetic column, fixedly connected with reset spring between magnetic column and the mounting groove inner wall that corresponds, be provided with the solenoid in the mounting groove, the internal rotating device that is provided with of dam, the filter screen lateral wall is provided with the clean mechanism of filter screen.

In foretell tidal power generation system that generating efficiency is high, rotating device includes that two are seted up at internal function chamber of dam and two settings are in internal first electro-magnet of dam, the sealed slip of function intracavity has cup jointed the magnetic sheet, first electro-magnet with correspond the solenoid passes through the wire and establishes ties, two intercommunicating pores have been seted up in the dam, intercommunicating pore intercommunication adjustment chamber with correspond the function chamber.

In foretell tidal power generation system that generating efficiency is high, the clean mechanism of filter screen includes the net brush with filter screen lateral wall sliding connection, it has the permanent magnet all to inlay in the net brush diapire, be provided with two second electro-magnets in the dam body diapire, the second electro-magnet passes through the wire electricity with the solenoid that corresponds and is connected.

In the tidal power generation system with high power generation efficiency, the overspeed prevention device comprises a liquid cavity arranged in the dam body and a third electromagnet arranged in the dam body, the third electromagnet is connected with the power generator in series through a conducting wire, a sliding plate is sleeved in the liquid cavity in a sealing and sliding manner, and a connecting spring is fixedly connected between the sliding plate and the inner wall of the liquid cavity.

In the tidal power generation system with high power generation efficiency, the outer wall of the net brush is coated with an antirust coating, the side walls of the adjustment cavity and the functional cavity are provided with protrusions, and hydraulic oil is filled between the magnetic plate and the rotating disc.

Compared with the prior art, the invention has the advantages that:

1. when tide rises, the pressure of the seawater on the left side can press the pressure plate on the left side into the mounting groove and drive the magnetic column to slide into the solenoid coil, so that induction current is generated in the solenoid coil and is supplied to the first electromagnet, the first electromagnet generates magnetic force and generates magnetic repulsion force on the magnetic plate, the hydraulic oil in the left side functional cavity is pressed into the adjusting cavity by the magnetic plate on the left side, and the pressure is transferred by the hydraulic oil, so that the adjusting plate rotates around the circle center of the rotating disc to drive the rotating disc to rotate, and the generator faces to the left side, at the moment, electricity can be generated by the generator when the tide rises in the dam body, when the tide is accumulated in the dam body, the pressure of the seawater in the dam body can press the pressure plate on the right side into the mounting groove, so that the rotating disc rotates reversely, the generator faces to one side in the dam body, at the moment, electricity can be generated by the dam body through water proofing during the tide-up, bidirectional power generation is realized, and the energy utilization rate is greatly improved;

2. the filter screen is used for blocking organisms and garbage in the ocean, so that the organisms and the garbage are prevented from entering the water through holes, the normal work of the generator is disturbed, and the blades of the generator are prevented from damaging the marine organisms;

3. when tide rises and falls, the pressure of seawater on the pressure plates at two sides is matched with a return spring, so that the pressure plates drive the magnetic columns to slide in and out the spiral coil to reciprocate, periodic alternating current is generated, the second electromagnet periodically generates an alternating magnetic field, and accordingly, the permanent magnets periodically attract and repel the permanent magnets, the permanent magnets drive the net brushes to reciprocate up and down to clean the filter screen, and the filter screen is prevented from being blocked;

4. when rivers are too fast, when the generator rotational speed is too fast, at this moment, the electric current of its electricity generation is great, make the magnetic force that the third electro-magnet produced great, attract the sliding plate, make the sliding plate with the partial hydraulic oil suction liquid intracavity of adjustment intracavity, because the sectional area of sliding plate is less with the sectional area of magnetic sheet relatively, and the sectional area of sliding plate matches with the sectional area of adjusting plate, therefore, can make the adjusting plate remove, drive the rolling disc and rotate certain angle, thereby make generator and rivers directionality slope, no longer just to rivers, thereby reduce its rotational speed, prevent that long-time high load operation from making the generator life-span reduce.

Drawings

FIG. 1 is a schematic structural view of a tidal power generation system with high power generation efficiency according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;

fig. 5 is a cross-sectional view taken at D-D in fig. 4.

In the figure: the device comprises a dam body 1, a water passing hole 2, a rotating shaft 3, a generator 4, an adjusting cavity 5, a rotating disc 6, a mounting groove 7, a pressure plate 8, a magnetic column 9, a solenoid coil 10, a first electromagnet 11, a functional cavity 12, a magnetic plate 13, a communicating hole 14, an adjusting plate 15, a filter screen 16, a screen brush 17, a second electromagnet 18, a liquid cavity 19, a sliding plate 20, a connecting spring 21, a third electromagnet 22, a permanent magnet 23 and a return spring 24.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-5, a tidal power generation system with high power generation efficiency comprises a dam body 1, a water through hole 2 and an adjusting cavity 5 are arranged in the dam body 1, as shown in fig. 1 and 4, the cross section of the adjusting cavity 5 is concave, the lower half part of the adjusting cavity 5 is cylindrical, the upper half part of the adjusting cavity is not completely annular, the dam body 1 is connected with a rotating shaft 3 through a bearing in a penetrating and rotating manner, one end of the rotating shaft 3 penetrates and extends into the water through hole 2 and is fixedly connected with a generator 4, the other end of the rotating shaft 3 penetrates and extends into the adjusting cavity 5 and is welded with a rotating disc 6, the side wall of the rotating disc 6 is connected with the inner side wall of the adjusting cavity 5 in a sealing and sliding manner, an adjusting plate 15 is welded on the upper surface of the rotating disc 6, the rotating disc 6 is positioned at the lower half part of the adjusting cavity 5, the adjusting plate 15 is positioned at the upper half part of the adjusting cavity 5, the adjusting plate 15 is connected with the inner side wall of the adjusting cavity 5 in a sealing and sliding manner, two ends of the water through hole 2 are both provided with a filter screen 16, a rotating device and an overspeed preventing device are arranged in the dam body 1.

The rotating device comprises two mounting grooves 7 formed in the dam body 1, a pressure plate 8 is connected in the mounting grooves 7 in a sealing sliding mode in a sleeved mode, magnetic columns 9 are welded on the side wall, close to one side of the rotating disc 6, of the pressure plate 8, return springs 24 are fixedly connected between the magnetic columns 9 and the inner walls of the corresponding mounting grooves 7, spiral coils 10 are arranged in the mounting grooves 7, the magnetic columns 9 slide into the spiral coils 10 to generate electricity through the pressure of seawater to the pressure plate 8, other mechanisms are driven, the rotating device is arranged in the dam body 1, and a filter screen cleaning mechanism is arranged on the side wall of each filter screen 16.

The rotating device comprises two function cavities 12 arranged in the dam body 1 and two first electromagnets 11 arranged in the dam body 1, magnetic plates 13 are hermetically and slidably sleeved in the function cavities 12, certain damping exists in the sliding connection between the magnetic plates 13 and the function cavities 12, the first electromagnets 11 are connected with corresponding spiral coils 10 in series through leads, two communicating holes 14 are formed in the dam body 1, as shown in fig. 4, the positions of the two communicating holes 14 are asymmetrically arranged, and the communicating holes 14 are communicated with the adjusting cavity 5 and the corresponding function cavities 12.

The clean mechanism of filter screen includes the net brush 17 with filter screen 16 lateral wall sliding connection, the sliding tray (not drawn in the picture) has been seted up to the net frame lateral wall of filter screen 16, net brush 17 lateral wall is provided with the slider (not drawn in the picture), net brush 17 is through the cooperation of slider and sliding tray and the net frame sliding connection of filter screen 16, it has permanent magnet 23 all to inlay in the net brush 17 diapire, be provided with two second electro-magnets 18 in the dam body 1 diapire, second electro-magnet 18 passes through the wire electricity with the solenoid 10 that corresponds and is connected, it makes up-and-down reciprocating motion of net brush 17 clean filter screen 16 to produce magnetic force through second electro-magnet 18, prevent to block up.

The overspeed prevention device comprises a liquid cavity 19 arranged in the dam body 1 and a third electromagnet 22 arranged in the dam body 1, wherein the third electromagnet 22 is connected with the generator 4 in series through a conducting wire, a sliding plate 20 is sleeved in the liquid cavity 19 in a sealing and sliding manner, a connecting spring 21 is fixedly connected between the sliding plate 20 and the inner wall of the liquid cavity 19, the sectional area of the sliding plate 20 is far smaller than that of the magnetic plate 13, but is equivalent to that of the adjusting plate 15, therefore, when the sliding plate moves, the magnetic plate 13 cannot be driven to move through hydraulic oil, but the adjusting plate 15 is driven to move, when the generator 4 is in a normal rotating speed, the magnitude of the generated current is supplied to the third electromagnet 22, the magnetic force generated by the third electromagnet 22 enables the sliding plate 20 not to overcome the elastic force of the connecting spring 21, the sliding plate does not move, only when the generator 4 is in an overspeed and the current is large, the sliding plate 20 can move, the adjusting plate 15 is moved so that the generator 4 is rotated by a certain angle.

The outer wall of the net brush 17 is coated with an antirust coating, the side walls of the adjusting cavity 5 and the functional cavity 12 are provided with protrusions, the protrusions play a limiting role, the inner side wall of the functional cavity 12 is provided with two protrusions, the included angle of the two protrusions is 180 degrees, hydraulic oil is filled between the magnetic plate 13 and the rotating disc 6, the transmission pressure of the hydraulic oil can be better, and meanwhile certain lubrication can be achieved between all parts.

In the invention, the left side of the dam body 1 is sea, the right side is a water storage reservoir, when tide rises, the pressure of seawater on the left side can press a pressure plate 8 on the left side into a mounting groove 7, and drive a magnetic column 9 to slide into a solenoid 10, so that induction current is generated in the solenoid 10 and is supplied to a first electromagnet 11, the first electromagnet 11 generates magnetic force to generate magnetic repulsion force on a magnetic plate 13, so that the magnetic plate 13 on the left side can press hydraulic oil in a functional cavity 12 on the left side into an adjusting cavity 5, and the adjusting plate 15 rotates around the center of a circle of a rotating disc 6 through the transmission of the hydraulic oil, so as to drive the rotating disc to rotate 6, so that the rotating disc 6 drives a rotating shaft 3 to rotate, the rotating shaft 3 drives a generator 4 to rotate, and blades of the generator 4 face to the left side, at the moment, when the seawater is stored in a water through hole 2, the generator 4 generates electricity, when the tide is full of the reservoir when the tide rises, when the tide moves back, the pressure of seawater in the dam body enables the pressure plate 8 on the right side to be pressed into the mounting groove 7 on the right side, meanwhile, the pressure of the pressure plate 8 on the left side disappears, under the elastic action of the reset spring 24, the pressure plate 8 on the left side drives the magnetic column 9 to slide out, at the moment, the pressure plate 8 on the right side drives the magnetic column 9 to slide in, so that hydraulic pressure on the right side is pressed into the adjusting cavity 5, hydraulic oil on the left side is sucked back, the rotating disc 6 rotates in the reverse direction for 180 degrees, the blade of the generator 4 faces one side in the dam body, at the moment, the electricity can be generated through the dam body water prevention during the tide moving back, and bidirectional electricity generation is achieved;

during power generation, organisms and garbage in the ocean are blocked by the filter screen 16, the organisms and the garbage are prevented from entering water holes, the normal work of the generator 4 is disturbed, the damage of blades of the generator to marine organisms is prevented, meanwhile, when tide rises and falls, the pressure of seawater to the pressure plates 8 on the two sides is matched with the reset spring 24, so that the pressure plates 8 drive the magnetic columns 9 to slide in and out the spiral coils 10 to reciprocate, periodic alternating current is generated, the second electromagnet 18 periodically generates an alternating magnetic field, and periodic attraction and repulsion of the permanent magnets 23 are realized, and the permanent magnets 23 drive the net brush 17 to reciprocate up and down to clean the filter screen;

when the generator 4 is in a normal rotation speed and the magnitude of the current generated by the generator is supplied to the third electromagnet 22, the magnetic force generated by the third electromagnet 22 makes the sliding plate 20 not overcome the elastic force of the connecting spring 21 enough and not move, when the water flow is too fast and the rotation speed of the generator 4 is too fast, the current generated by the generator is large, the magnetic force generated by the third electromagnet 22 is large, the sliding plate 20 slides against the elastic force of the connecting spring 21, so that the sliding plate 20 sucks part of the hydraulic oil in the adjusting cavity 5 into the liquid cavity 19, because the sectional area of the sliding plate 20 is relatively small compared with the sectional area of the magnetic plate 13 and the sectional area of the sliding plate 20 is equivalent to the sectional area of the adjusting plate 15, the adjusting plate 15 moves to drive the rotating disc 6 to rotate by a certain angle, so that the generator 4 inclines to the water flow and is not directly opposite to the water flow any more, thereby reducing the rotation speed thereof, the reduction of the life of the generator due to the long-time high-load operation is prevented.

Although the terms of the dam body 1, the water passing hole 2, the rotating shaft 3, the generator 4, the adjustment chamber 5, the rotating disk 6, the mounting groove 7, the pressure plate 8, the magnetic pole 9, the solenoid 10, the first electromagnet 11, the function chamber 12, the magnetic plate 13, the communication hole 14, the adjustment plate 15, the filter screen 16, the screen brush 17, the second electromagnet 18, the liquid chamber 19, the sliding plate 20, the connection spring 21, the third electromagnet 22, the permanent magnet 23, the return spring 24, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A tidal power generation system with high power generation efficiency comprises a dam body (1) and is characterized in that, a water through hole (2) and an adjusting cavity (5) are arranged in the dam body (1), the dam body (1) is in penetrating and rotating connection with a rotating shaft (3) through a bearing, one end of the rotating shaft (3) penetrates and extends into the water through hole (2) and is fixedly connected with a generator (4), the other end of the rotating shaft (3) penetrates and extends into the adjusting cavity (5) and is welded with a rotating disc (6), the side wall of the rotating disc (6) is in sealed sliding connection with the inner side wall of the adjusting cavity (5), an adjusting plate (15) is welded on the upper surface of the rotating disc (6), the adjusting plate (15) is in sealed sliding connection with the inner side wall of the adjusting cavity (5), both ends of the water through hole (2) are provided with filter screens (16), and a rotating mechanism and an overspeed preventing device are arranged in the dam body (1);

the rotating mechanism comprises two mounting grooves (7) formed in the dam body (1), a pressure plate (8) is sleeved in the mounting grooves (7) in a sealing sliding mode, magnetic columns (9) are welded on the side wall, close to one side of the rotating disc (6), of the pressure plate (8), reset springs (24) are fixedly connected between the magnetic columns (9) and the inner walls of the corresponding mounting grooves (7), spiral coils (10) are arranged in the mounting grooves (7), a rotating device is arranged in the dam body (1), and a filter screen cleaning mechanism is arranged on the side wall of each filter screen (16);

the rotating device comprises two function cavities (12) arranged in the dam body (1) and two first electromagnets (11) arranged in the dam body (1), magnetic plates (13) are hermetically and slidably sleeved in the function cavities (12), the first electromagnets (11) are connected with the corresponding spiral coils (10) in series through leads, two communicating holes (14) are formed in the dam body (1), and the communicating holes (14) are communicated with the adjusting cavities (5) and the corresponding function cavities (12);

the anti-overspeed device comprises a liquid cavity (19) arranged in the dam body (1) and a third electromagnet (22) arranged in the dam body (1), wherein the third electromagnet (22) is connected with the generator (4) in series through a conducting wire, a sliding plate (20) is sleeved in the liquid cavity (19) in a sealing and sliding manner, and a connecting spring (21) is fixedly connected between the sliding plate (20) and the inner wall of the liquid cavity (19);

the filter screen cleaning mechanism comprises a net brush (17) which is in sliding connection with the side wall of the filter screen (16), permanent magnets (23) are embedded in the bottom wall of the net brush (17), two second electromagnets (18) are arranged in the bottom wall of the dam body (1), and the second electromagnets (18) are electrically connected with corresponding spiral coils (10) through leads;

the outer wall of the net brush (17) is coated with an antirust coating, the side walls of the adjusting cavity (5) and the functional cavity (12) are provided with protrusions, and hydraulic oil is filled between the magnetic plate (13) and the rotating disc (6).