KR101258463B1 - Ocean stream powered device using piezoelectric element - Google Patents

Abstract

The present invention relates to an ocean current generating device using a piezoelectric element, and more particularly, by installing a streamlined structure in which a plurality of piezoelectric elements are vertically and horizontally arranged in the sea where the sea water continuously flows in a constant direction, and thus, by the speed difference of the fluid. The present invention relates to an ocean current generator that converts pressure energy into electrical energy by applying a force of current to the piezoelectric element using a generated pressure difference.
In the current generation apparatus using the piezoelectric element according to the present invention, the upper head portion is formed in a curved shape, the streamlined shape is formed sharply toward the upper tail portion of the rear, the center of gravity and the direction perpendicular to the direction of the current A unit power generation unit having a piezoelectric element portion formed by arranging and mounting a piezoelectric element vertically and horizontally on the upper and lower surfaces of the tail portion of the streamlined structure, and horizontally inserting the rotating shaft horizontally to fix the rotating shaft to a fixed structure installed in the sea; A rectifier circuit for full-wave rectifying the electrical energy output from the piezoelectric element unit to convert it into direct current; A smoothing circuit for removing the ripple included in the direct current output from the rectifier circuit; And a storage battery for storing the DC voltage output from the smoothing circuit.

Description

Ocean current generator using piezoelectric element {OCEAN STREAM POWERED DEVICE USING PIEZOELECTRIC ELEMENT}

The present invention relates to an ocean current generating device using a piezoelectric element, and more particularly, by installing a streamlined structure in which a plurality of piezoelectric elements are vertically and horizontally arranged in the sea where the sea water continuously flows in a constant direction, and thus, by the speed difference of the fluid. The present invention relates to an ocean current generator that converts pressure energy into electrical energy by applying a force of current to the piezoelectric element using a generated pressure difference.

Conventional power generation includes thermal power generation using fossil fuels, hydroelectric power using positional energy, wind power using kinetic energy of wind, solar power using solar energy, nuclear power using nuclear fission, and wave energy. Wave power generation as a source, ocean temperature differential generation using the temperature difference according to the depth of the current, tidal power generation using the difference between tides, and current generation using the current as the energy source due to the difference of tidal currents and the topography.

Among them, thermal power generation and hydropower generation require enormous construction costs, and thermal power generation causes pollution problems due to fossil energy. Secondary environmental issues that change even the climate are being raised.

In addition, since wind power and solar power are governed by the influence of weather conditions, the power generation system cannot be operated when there is no wind and when solar radiation energy is cut off.

In addition, nuclear power has enormous costs for facility investment to prevent radiation leakage, and has a lot of restrictions such as waste disposal for waste disposal. There is a serious environmental damage in the event of a single accident. There is always a danger incurred.

Wave power generation and ocean temperature differential generation have a problem that it is difficult to apply universally because the area suitable for the location conditions is quite limited.

In addition, tidal power utilizes the difference between tides due to tidal phenomena. Tidal phenomena are predominantly caused by the attraction of the moon and the sun, and the difference in centrifugal force generated when the earth revolves.

Tidal power generation is a method of generating water by using water level difference by blocking seawater and bay in the area where tidal differences occur, and confining seawater and installing a water generator.

The tidal power generation can predict the change of tides when the place of power generation is decided, and there is an advantageous aspect of clean energy, but it devastates the tidal flats, requires a huge area, has a huge impact on the marine environment, and can actually use energy. The minimum effective drop to convert to is about 5m, and the system should be installed in the place where tidal aberration occurs at least about 5m or more, and the difference between tides on different sides of the dam should be large to achieve greater efficiency.

Ocean power generation that actively uses kinetic energy of ocean currents is suitable for not only areas with large tidal differences but also areas with high current speeds, and can be developed even if they are smaller than 5m or more required for tidal power generation. It is advantageous compared to other power generation systems in that it can be.

On the other hand, the piezoelectric element is a device exhibiting a piezoelectric phenomenon, also referred to as a piezoelectric element.

Crystals, tourmaline, Rochelle salt, etc. have been used as a piezoelectric element since early, and artificial crystals such as barium titanate, ammonium dihydrogen phosphate, and ethylene diamine tartrate developed in recent years also have excellent piezoelectricity.

Piezoelectric phenomenon is a phenomenon in which positive and negative charges are proportional to external force on both sides of a plate when pressure is applied in a certain direction on a certain plate. The amount is greatly increased.

In addition, the crystal plate has inherent vibration, and when the elastic vibration and the electric vibration coincide, the vibration is combined with the piezoelectric force to generate a stronger vibration.

In order to generate electric energy using the piezoelectric element, it is used in various fields.

That is, as a conventional technique for generating electrical energy from the piezoelectric element by applying vibration or mechanical energy to the piezoelectric element, the piezoelectric element is mounted on the heel of the shoe so that electrical energy is produced from the shoe every time the user walks.

In addition, the technology for generating power by using the vibration of the vehicle itself, or the pressure generated in the progress of the vehicle is disclosed, but there is a fundamental problem that can not continue to develop because there is a limit to the continuous repetitive movement of the power source causing the piezoelectric there was.

Publication No. 10-2011-0052299 (published May 18, 2011) Registration No. 20-0323255 (Registration date August 04, 2003)

The present invention has been made to solve the above-described problems, the pressure difference caused by the difference in the speed of the fluid by installing a streamlined structure in which a plurality of piezoelectric elements are vertically and horizontally arranged in the sea where the sea water continues to flow in a constant direction By applying the force of current to the piezoelectric element to convert the electrical energy into electrical energy to generate and store electricity, it is possible to produce renewable energy without pollution and carbon dioxide generation by using clean energy sources without pollution, It is to provide an ocean current generator using a piezoelectric element that can be continuously generated regardless.

In the current generation apparatus using the piezoelectric element according to the present invention for achieving the above object, the upper head portion is formed in a curved, the streamlined shape is formed sharply toward the upper tail portion of the rear, the center of gravity A streamlined structure for horizontally fitting a rotating shaft in a direction perpendicular to the direction of the current, and fixing the rotating shaft to a fixed structure installed in the sea; and a piezoelectric element portion formed by vertically arranging and mounting piezoelectric elements on upper and lower surfaces of the tail portion of the streamlined structure. A unit power generation unit provided;

A rectifier circuit for full-wave rectifying the electrical energy output from the piezoelectric element unit to convert it into direct current;

A smoothing circuit for removing the ripple included in the direct current output from the rectifier circuit; And

It is configured to include a storage battery for storing the DC voltage output from the smoothing circuit.

According to the above-mentioned means for solving the problem, the flow rate of the fluid flowing to the upper portion of the streamlined structure and the flow of fluid flowing below the streamlined structure by installing a streamlined structure in which a plurality of piezoelectric elements are arranged vertically and horizontally where seawater continues to flow in a constant direction. By converting the pressure energy into electrical energy and generating and accumulating the pressure difference caused by the car on the pressure element, it is possible to produce renewable energy without pollution and carbon dioxide by using a clean energy source without pollution, Regardless, it can continue to develop.

1 is a view for explaining the principle of the present invention,
2 is a configuration diagram of an ocean current generator according to the present invention,
3 is a perspective view showing an example of the unit power generation unit shown in FIG.
4 is a view showing an installation state of the unit power generation unit shown in FIG.
5 is a perspective view showing another example of the unit power generation unit shown in FIG.

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

1 is a view for explaining the principle of the present invention.

Lifting force is generated in the air due to the air-flowing wing of the plane, the present invention uses this principle to install a streamlined wing (1) in the sea current region continuously flowing in one direction.

When the currents meet the streamlined wing 1, the speed difference of the currents occurs in the upper and lower portions of the streamlined wing 1 by the shape of the streamlined wing 1.

That is, the current flow rate V1 flowing upward of the streamlined wing 1 is faster than the current flow rate V2 flowing below the streamlined wing 1.

However, in hydrodynamics, the product of pressure (P) and velocity (V) is always constant (Bernouille theorem), so the pressure and velocity are inversely related, so the pressure (P1) of the current flowing into the upper part of the streamlined wing is equal to the streamlined wing (1). It becomes smaller than the current flow pressure (P2) flowing to the lower part of the) and receives a lifting force rising from the streamlined object.

At this time, if the rotating shaft 2 is inserted horizontally in the direction perpendicular to the direction of the current in the center of gravity of the streamlined wing (1), it rotates in the direction in which the tail portion of the streamlined wing (1) rises (counterclockwise in view). Meet and be under great pressure.

When a plurality of piezoelectric elements are vertically and horizontally mounted on a portion (tail portion) under such a large pressure, the piezoelectric elements are subjected to a large pressure, and the piezoelectric elements generate electricity by this pressure.

2 is a block diagram of an ocean current generator according to the present invention.

As shown in FIG. 1, the generator 3 includes a unit power generation unit 10, an overvoltage protection circuit 20, a rectifier circuit 30, a smoothing circuit 40, a voltage regulator 45, and a storage battery 50. It is configured to include.

The unit power generation unit 10 generates power using the pressure difference of the current and the plurality of piezoelectric elements 100.

When the piezoelectric element 60 is applied to a thin plate (vibration piece) such as quartz, tourmaline, Rochelle salt in a certain direction, positive and negative charges in proportion to the external force appear on both sides of the plate and are stable while vibrating by the piezoelectric effect. Supply the frequency.

The unit power generation unit 10 collects minute power generated by each piezoelectric element 60 and outputs a constant AC power.

The rectifier circuit 30 rectifies and converts the alternating current (AC) output from the unit power generation unit 10 into direct current (DC).

For example, the rectifier circuit 30 may be configured as a bridge circuit in which a current is separated into an electrical conductor connected in parallel and recombined with a conductor surrounded by a network.

The smoothing circuit 40 is a low pass filter used to reduce the pulsation fraction contained in the output of the rectifier circuit 30.

The smoothing circuit 40 is composed of, for example, a capacitor C, an inductor L, and a resistor R.

That is, the rectifying circuit 30 and the smoothing circuit 40 rectify the power collected from the unit power generation unit 10 and convert the DC into a DC of a predetermined voltage through a process of removing ripple.

The storage battery 50 charges the DC voltage output from the smoothing circuit 40.

In the overvoltage protection circuit 20, when overvoltage or overcurrent is applied through the unit power generation unit 10 or in the rectifier circuit 30 and the smoothing circuit 40 or the storage battery 50, the overvoltage or overcurrent is generated in the unit power generation unit ( 10) to protect the internal configuration of the generator (3) by blocking it when applied to.

When the output voltage of the unit power generation unit 10 is low and the DC voltage output from the smoothing circuit 40 is low, the voltage regulator 45 temporarily flows a current from the storage battery 50 to the smoothing circuit 40. To prevent.

3 is a perspective view illustrating an example of the unit power generation unit illustrated in FIG. 2.

As illustrated, the unit power generation unit 10 includes a streamlined structure 100, an auxiliary wing 110, a connection member 120, a floating body 130, and a piezoelectric element unit 140.

The streamlined structure 100 has a streamlined shape in which the upper head portion of the front is curved in order to reduce the resistance of the current, and is sharply formed toward the rear upper tail portion.

The interior of the streamlined structure 100 is filled with a predetermined amount of seawater so that buoyancy does not work, and the water is symmetrically filled at its center of gravity, so that the streamlined structure 100 is left and right balanced.

Insert the rotating shaft 102 horizontally in a direction perpendicular to the direction of the current in the center of gravity of the streamlined structure 100 to allow the streamlined structure 100 to rotate about the rotating shaft 102, the rotary shaft 102 is The rotating shaft 102 is fixed to the fixed structure 150 installed in the sea is not moved.

The material of the streamlined structure 100 is FRP coating on the iron or carbon fiber coating to prevent rust by salts of sea water.

Piezoelectric elements 60 are vertically and horizontally arranged on the upper and lower surfaces of the streamlined structure 100 to form the piezoelectric element portions 140, but the piezoelectric element portions 140 are placed on the upper and lower surfaces of the tail portion. ).

When the streamlined structure 100 is installed in the current region, the current flows continuously and the tail of the streamlined structure 100 is lifted up and lifted up by the principle of fluid dynamics. Rotating force is generated.

When the force hits the current that flows, the pressure is generated on the upper surface of the tail portion of the streamlined structure, the electrical energy is generated in the piezoelectric element portion 140 formed on the tail upper surface.

In addition, a force that rotates clockwise around the rotating shaft 102 is generated by hydraulic pressure, which is the cause of gravity, and the piezoelectric element portion formed on the lower surface of the tail by generating pressure on the lower surface of the tail due to the current flowing into the force. Electrical energy is generated at 140.

As such, the lifting moment and the hydraulic moment intersect with each other about the rotational shaft 102 and continue the repetitive movement of counterclockwise and clockwise rotation about the rotational shaft 102 to form a piezoelectric element formed on the upper and lower tail surfaces. The unit 140 continuously generates electrical energy.

In addition, in order to obtain more electricity by the pressure difference hinge-couple the auxiliary wing 110, the piezoelectric element portion 140 is formed on the end (tail end) of the streamlined structure 100, the auxiliary wing 110 Connects to the floating body 130 floating on the seawater through the connecting member 120.

In this case, the piezoelectric elements 60 are formed by vertically and horizontally arranging and mounting the piezoelectric elements 60 on upper and lower surfaces of the auxiliary wings 110.

As a result, the wave longitudinal wave is transmitted to the auxiliary wing 110 through the connecting member 120 whenever the wave is rocking, and the wave longitudinal wave causes the auxiliary wing 110 to move up and down about the hinge 112. Electricity is continuously generated in the piezoelectric element part 60 by the pressure repeatedly hitting the piezoelectric element 60 of 110.

In case of severe waves on the sea due to abnormal weather such as typhoon, the auxiliary wing 110 of the sea bottom connected by the connecting member 120 to the floating body 130, and the streamlined structure in which the auxiliary wing 110 is hinged. ) May be damaged or damaged by moving together due to the swing of the floating body 130. In order to prevent this, the detaching member 160 is provided in the middle of the connecting member 120.

The connection member 120 is separated into two (121, 122) are coupled to each other, the ball 162 formed on one end of the connection member 121 connected to the floating body 130 and the connection connected to the auxiliary wing 110 The separation member 160 is formed of a ball coupling part 164 formed with a coupling groove 163 to couple the ball 162 to the other end of the member 122.

At this time, the ball coupling portion 164 is elastic, when the floating body 130 is severely shaken by the big wave, the external force is applied to the ball 162 through the connecting member 121 by a predetermined size or more, the ball coupling portion 164 is opened. When the ball 162 is separated, the floating body 130 and the auxiliary wing 110 is separated in the end, even if the wave is severe, the auxiliary wing 110 and the streamlined structure 100, which is the main configuration of the unit power generation unit 10 ) Can be protected.

4 is a view showing an installation state of the unit power generation unit shown in FIG.

The unit power generation unit 10 of FIG. 3 is installed up and down to have a predetermined interval, and is installed vertically and horizontally so that the power generation unit 10a is installed in an area where the current flows through the electricity. Can be obtained.

5 is a perspective view illustrating another example of the unit power generation unit illustrated in FIG. 2.

As shown in FIG. 5, the lever shaft 124 penetrates the lever shaft 124 in the middle of the connecting member 120 at a position closer to the floating body 130 than the auxiliary wing 110. It is fixed to 150 so that the connecting member 120 moves in the opposite direction with respect to the lever shaft 124 by the lever principle.

That is, the connecting member 120 on the side of the floating body 130 is short, and the auxiliary wing 110 is long on the lever shaft 124, even if the floating body 130 moves up and down a little by waves. Auxiliary wing 110 is moved a lot up and down.

Accordingly, even when the height of the wave is low, the rotation angle of the auxiliary wing 110 around the hinge 112 is large, and the current flow gives high pressure to the piezoelectric element 60 of the auxiliary wing 110. ) Will generate electricity.

At this time, the connecting member 120 of the auxiliary wing 110 is provided with double (120a, 120b) and one connecting member 120a is connected to the other connecting member 120a while the other connecting member (120a) is fitted to the other connecting member (120b) The rotation angle of the auxiliary wing 110 can be properly adjusted by allowing the door 120b to slide in and out by adjusting the length thereof.

In addition, in order to move the auxiliary wing 110 with the increase of the lever, a large force capable of moving the floating body 130 is required. In this case, the floating body 130 is provided in duplicate (130a, 130b) In the state in which the fluid 130a is fitted to the other floating body 130b, one floating body 130a may slide in and out of the other floating body 130b to adjust the volume of the floating body 130.

The embodiments and drawings attached to this specification are merely to clearly show some of the technical ideas included in the present invention, and those skilled in the art can easily infer within the scope of the technical ideas included in the specification and drawings of the present invention. Modifications that can be made and specific embodiments will be apparent that both are included in the scope of the invention.

10: unit power generation unit, 20: overvoltage protection circuit
30: rectification circuit 40: smoothing circuit
50: storage battery 60: piezoelectric element
100: streamlined structure 110: auxiliary wing
120: connecting member 130: floating body
140: piezoelectric element portion 150: fixed structure
160: release member

Claims (8)

The upper head portion is formed in a curved shape, and has a streamlined shape that is pointed toward the upper tail portion of the rear portion, and the rotation axis is horizontally inserted by inserting the rotation axis horizontally in a direction perpendicular to the direction of the current at its center of gravity. A unit power generation unit having a streamlined structure fixed to the structure and a piezoelectric element portion formed by vertically and horizontally arranging and mounting piezoelectric elements on upper and lower surfaces of the tail portion of the streamlined structure;
A rectifier circuit for full-wave rectifying the electrical energy output from the piezoelectric element unit to convert it into direct current;
A smoothing circuit for removing the ripple included in the direct current output from the rectifier circuit; And
An ocean current generator using a piezoelectric element comprising a storage battery for storing a DC voltage output from the smoothing circuit. The method of claim 1,
Seawater is filled in the streamlined structure, the sea current generator using a piezoelectric element, characterized in that the seawater is filled symmetrically on both sides of the center of gravity. The method of claim 1,
Hinge coupling of the auxiliary wings provided with a piezoelectric element portion formed by vertically and horizontally arranged and mounted piezoelectric elements on the upper and lower surfaces of the tail end portion of the streamlined structure, and connecting the auxiliary wings to the floating body floating on the seawater through a connecting member. Current generator using a piezoelectric element characterized in that. The method of claim 3, wherein
The connection member is separated into two and are coupled to each other, the ball is formed on one end of the connection member connected to the floating body, provided with a ball coupling portion formed with a coupling groove for coupling the ball to the other end of the connection member connected to the auxiliary wing Current generator using a piezoelectric element, characterized in that for coupling. The method of claim 4, wherein
The ball coupling portion is elastic, current flow apparatus using a piezoelectric element characterized in that the ball is separated from the coupling groove when an external pressure of a predetermined size or more is applied. The method of claim 3, wherein
Current flow using a piezoelectric element characterized in that penetrates the lever shaft in the middle of the connecting member in a position closer to the floating body than the auxiliary wing, and fixes the lever shaft to the fixed structure so that the connecting member moves up and down by the lever principle. Power generation device. The method according to claim 6,
The auxiliary current on the side of the auxiliary wing side provided with a piezoelectric element using a piezoelectric element, characterized in that the length can be adjusted by sliding in and out of a state in which one connection member is fitted to the other connection member. The method of claim 7, wherein
The current generation device using a piezoelectric element characterized in that the floating body is provided with a double to allow the one floating body to enter and exit in a slide manner in the state of being fitted to the other floating body to adjust the volume of the floating body.

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