KR101774442B1 - Ship with Electric Power Generation Device using Wave Force - Google Patents

Abstract

Disclosure of Invention Technical Problem [8] The present invention is directed to a fuel cell system that can generate relatively high efficiency power by using up and down kinetic energy of a wave to save energy and reduce the use of fossil fuel, A ship having a power generating device, comprising: a ship main body; A vertical shaft vertically arranged to be movable in a vertical direction with respect to the ship body; A fluid resistance plate which is provided at a lower end of the vertical shaft in a horizontal plane and is wired in a forward and backward direction; An elastic body provided between the vertical shaft and the ship body; A power generating unit generating power using the relative motion between the vertical shaft and the ship body; A variable weight provided on the vertical shaft and having a variable weight; A shaking motion measuring unit provided on the ship body for measuring a vertical oscillation period of the ship body; A weight varying means for varying the weight of the variable weight according to a vertical oscillation cycle of the ship body measured by the oscillation measuring unit; And a control unit.

Description

Ship with Electric Power Generation Device using Wave Force [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ship having a wave power generator, and more particularly, to a ship having a wave power generator for generating electric power by using wave power and utilizing it as energy required for ship operation.

Ships shall produce and consume all the necessary power during their voyage. To this end, the ship is provided with a power generating device for generating electric power.

The power generation device provided on the ship is a device for producing electric energy for smoothly supplying necessary electric power and preparing for an emergency, and converts the energy generated by the mechanical movement of the engine into electric energy by the magnetic coupling inside the power generation device. The electric energy thus generated is supplied directly to the load or stored in a battery, which is a separate energy storage means.

However, this type of power generation mainly uses the kinetic energy of the engine, and the engine takes the way of burning the fossil fuel to obtain the kinetic energy. That is, the fossil fuel is burned to convert chemical energy into kinetic energy, and the converted kinetic energy is converted into electric energy to supply to the electric device or to be stored in the battery.

In addition, there is a propulsion device for obtaining propulsion power on the ship, and the propulsion device also generates propulsion power by using fossil fuel such as bunker oil or light oil.

As such, the use of fossil fuels for propulsion and power generation of ships will inevitably lead to environmental pollution. Given the growing interest in environmental pollution and the growing trend toward increased emissions, ships with fossil fuels as their primary source of energy will gradually lose ground.

Therefore, a method of generating electric energy by using an environmentally friendly energy source such as a tidal force, a wave power, and a wind power, obtaining propulsion power of the ship from the electric energy, or supplying electric power to an electric device installed on a ship is receiving attention.

This eco-friendly energy can significantly reduce the use of fossil fuels, prevent the generation of air and ocean pollutants and save energy production costs.

Currently, researches related to this are being actively carried out at home and abroad, and some ships are equipped with power generation devices that use environmentally friendly energy and are used to produce some of the necessary power in ships.

The most widely used eco-friendly energy sources on the ship are solar and wind power, and methods for utilizing various energy sources such as tidal force, wave power, and sea temperature difference are being studied.

However, the power generation apparatus in a conventional ship using an energy source such as sunlight and wind power has a problem in that it can not produce and supply stable power because the power generation amount changes greatly according to weather conditions.

For example, in the case of sunlight, the amount of cloud is greatly influenced, and since the time except for the daylight hours can not be generated, the electric power can be stably produced and supplied only during the daytime when the amount of clouds is small.

Therefore, there is a need to apply a power generation device using a wave which can be relatively easily obtained at sea and continuously supplied with energy, to a ship.

Korean Patent Laid-Open No. 10-2012-0024158 "Wave power generator of ship" (2012. 3.14.) Korean Patent Laid-Open No. 10-2015-0115050 "Ship or Offshore Structure with Wave Power Generator" (Oct. Korean Patent No. 10-1236530 entitled "Vessel equipped with wave power generator" (2013. 2.18.)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus that can generate power with relatively high efficiency using energy due to up and down movement of a wave, And to provide a ship equipped with a wave power generator which can reduce the generation of atmospheric and marine pollutants by reducing the use of fossil fuels as compared with the prior art.

In order to solve the above-mentioned problems, A vertical shaft vertically arranged to be movable in a vertical direction with respect to the ship body; A fluid resistance plate which is provided at a lower end of the vertical shaft in a horizontal plane and is wired in a forward and backward direction; An elastic body provided between the vertical shaft and the ship body; A power generating unit generating power using the relative motion between the vertical shaft and the ship body; A variable weight provided on the vertical shaft and having a variable weight; A shaking motion measuring unit provided on the ship body for measuring a vertical oscillation period of the ship body; A weight varying means for varying the weight of the variable weight according to a vertical oscillation cycle of the ship body measured by the oscillation measuring unit; And a control unit.

The variable weighing device may be a water tank in which water is stored, and the weight varying means is a water supply and discharge means for supplying water to the water tank or discharging water from the water tank, And a control unit for controlling the water supply and discharge means according to the up-and-down swing cycle of the main body.

The power generator may further include a gear box provided on the ship body for converting up and down movement of the vertical shaft into rotational motion with respect to the ship body, a generator for converting the rotary motion converted by the gearbox into electric power, And a battery for storing power generated by the generator.

In the above, it is preferable that the solar battery is further connected to the battery.

Preferably, the vertical shaft has a circular cross-section extending in the vertical direction.

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Preferably, the ship body is a catamaran line where two hulls are connected by a single deck, and the vertical shaft is disposed to penetrate the deck.

In the above, the shaking motion measuring unit may be an acceleration sensor.

As described above, according to the present invention, it is possible to generate electricity with relatively high efficiency by using the energy due to the up-and-down motions of waves, to produce energy stably without being greatly influenced by the weather environment, Can be reduced compared with the conventional ones, thereby reducing the generation of atmospheric and marine pollutants.

1 is a conceptual perspective view of a ship having a wave power generator according to an embodiment of the present invention;
FIG. 2 is a concept front view of FIG. 1;
Figure 3 is a conceptual top view of Figure 1,
Figure 4 is an enlarged view of the gearbox and generator portions of Figure 1,
Fig. 5 is an enlarged view of the weight changing means portion of Fig. 1,
6 is a conceptual view showing an operation of a ship having a wave power generator according to an embodiment of the present invention;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention in the drawings, portions not related to the description are omitted, and like reference numerals are given to similar portions throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

FIG. 1 is a conceptual perspective view of a ship having a wave power generator according to an embodiment of the present invention, FIG. 2 is a conceptual front view of FIG. 1, FIG. 3 is a conceptual plan view of FIG. 1, FIG. 5 is an enlarged view of the weight changing means of FIG. 1, and FIG. 6 is a conceptual view showing an operation of a ship having a wave power generator according to an embodiment of the present invention. to be.

The ship having the wave power generator according to the present embodiment can be divided into the ship main body 100 and the power generating device.

The ship body 100 is a catamaran line in which two hulls 110 are connected in a horizontal plane by a single deck 120. Due to the nature of a catamaran, Energy can be efficiently utilized.

The technical features of this embodiment are in a power generation apparatus. The power generation apparatus includes a vertical shaft 210, an elastic body 220, a fluid resistance plate 230, a power generation section 240, a variable weight 250, (260) and a weight variable means.

The weight changing means includes a water supply and discharge means 270 and a control unit (not shown).

The ship body 100 is provided with a vertical shaft 210. The vertical shaft 210 is a round bar having a circular cross-sectional shape and is provided at the center of the ship body 100 through the deck 120 so as to receive less resistance of the fluid.

The vertical shaft 120 is vertically arranged with respect to the ship body 100 so as to be vertically movable.

The movement of the vertical shaft 120 in the vertical direction does not move up and down from the ship body 100 to which the vertical shaft 120 is fixed but the vertical position of the vertical shaft 120 relative to the ship body 100 it means.

That is, as the height of the sea surface at which the ship body 100 is located is changed by the waves, the position of the ship body 100 relative to the vertical shaft 120 changes vertically.

The vertical shaft 120 is engaged with the ship body 100 via the elastic body 220. The elastic body is a coil spring used in a general mechanical device and wound in a uniform radius so as to have a constant elastic modulus.

One end of the elastic body 220 is coupled to the upper surface of the ship body 100 and more specifically the deck 120 and the other end is coupled to the main surface of the vertical shaft 120 located at the upper portion of the ship body 100 .

The elastic body 220 elastically connects the ship body 100 and the vertical shaft 120 to prevent the vertical shaft 120 from completely separating from the ship body 100.

A fluid resistance plate 230 for restricting up and down movement of the vertical shaft 210 is provided at a lower end of the vertical shaft 210 in a horizontal plane.

The fluid resistance plate 230 is formed to have a large area in a horizontal plane so that the resistance of the fluid in the vertical direction is maximized and the fluid resistance in the traveling direction of the ship is minimized.

That is, the fluid resistance plate 230 is horizontally fixed to the lower end of the vertical shaft 210 as a horizontal board in the form of a surfboard.

The waves are generated by the wind. The wind only acts on the surface of the seawater, causing only the elevation change of the sea level, and does not affect the seawater flow below the sea level.

Therefore, even if the level of the sea surface changes due to the waves, the fluid resistance plate 230 located in the water is positioned at a constant height without receiving the force in the vertical direction.

However, the ship body 100 floating on the sea surface, more specifically, the hull 110, which is in contact with the surface of the sea water and influenced by the waves, changes in height in the vertical direction due to the waves.

That is, as shown in FIG. 6, the relative position of the ship body 100 is changed with respect to the fluid resistance plate 230 whose movement in the vertical direction is restricted due to the fluid resistance.

The vessel main body 100 rises with the waves and has a high position with respect to the fluid resistance plate 230 or the vessel body 100 descends with the waves and has a low position with respect to the fluid resistance plate 230. Such a change in position of the ship body 100 with respect to the fluid resistance plate 230 is converted into kinetic energy.

In other words, the kinetic energy of the ship body 100 can be converted into electric power in the power generation unit 240. In order to convert the kinetic energy into electric power, the power generator 240 is provided on the upper part of the ship body 100 as described above.

The power generation section 240 includes a gear box 241, a generator 242, a battery 243, and a solar power generation section 244.

The kinetic energy of the ship body 100 is converted into electric power by the gear box 241 and the generator 242, and the battery 243 serves to store the generated electric power. The solar power generation unit 244 is added to the power generation unit 240 to generate additional power using solar light.

The gear box 241 has a rack and pinion structure for converting the upward and downward movement of the ship body 100 relative to the vertical shaft 210 into rotational motion.

The rack gear (not shown) is installed at the upper end of the vertical shaft 210, and the pinion gear 241a engaged with the rack gear is installed in the gear box 241 so that its position is fixed. Therefore, when the ship body 100 linearly moves in the vertical direction, the pinion gear 241a engaged with the rack gear rotates.

A generator 242 is provided to receive the rotation of the pinion gear 241a.

In this embodiment, the generator 242 is positioned inside the gear box 241 in order to reduce the energy loss during the conversion process, and the generator 242 is directly connected to the pinion gear 241a.

The rotation of the pinion gear 241a is converted into electric power by the generator 242. [

The generated power may be used immediately to operate the vessel, or may be stored in the battery 243 for efficient power distribution and use.

In this embodiment, the rotary motion of the pinion gear 241a is designed to be converted from the generator 242 to electric power by using the rack and pinion structure. However, this is merely one example, and various methods such as producing electric power through a magnet provided in the vertical shaft 210 and a magnetic induction coil surrounding the magnet may be applied.

On the other hand, the ship of this embodiment has a wide deck 120 area as a catamaran. Accordingly, devices for producing additional electric power can be easily added. In this embodiment, the solar power generator 244 is installed on the deck 120 so that the structural characteristics of the catamarans can be utilized well.

It is preferable that the power generated by the solar power generation unit 244 is also stored in the battery 243 so that the power can be efficiently distributed and used.

On the other hand, in this embodiment, the vertical shaft 210 and the ship body 100 may have the largest relative motion to each other in order to increase power generation efficiency.

A variable weight 250 having a variable weight is provided on the vertical shaft 210.

The variable weight 250 adjusts the weight of the variable weight 250 by adjusting the amount of seawater stored in the variable weight 250 as a water tank for storing seawater.

The weight varying means is provided for adjusting the weight of the variable weight body 250. The weight varying means includes water supply and discharge for introducing seawater into the variable weight body 250 or discharging seawater from the variable weight body 250 Means 270. The water supply and discharge means 270 may comprise a pump, a valve, or the like. That is, the weight of the water tank 250 can be changed by supplying seawater to the water tank 250 or discharging the water of the water tank 250 to the sea by a pump or the like.

On the other hand, the ship main body 100 is provided with a shaking motion measuring section 260 for measuring the vertical oscillation period of the ship body. The fluctuation measuring unit 260 may be an acceleration sensor.

The control unit (not shown) controls the water supply and discharge means 270 to increase or decrease the weight of the variable weight 250 based on the vertical oscillation period of the ship body 100 measured by the oscillation measurement unit 260 .

The control unit (not shown) measures the period of the wave using the elastic body 220 and the oscillation measurement unit 260 coupled to the vertical shaft 210, so that the fluid resistance plate 230 is positioned relative to the ship body 100 The weight of the variable weight 250 provided on the vertical shaft 210 is controlled so as to cause vertical movement.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects but are not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: ship body 110: hull
120: Deck
210: vertical shaft
220: elastomer
230: fluid resistant plate
240:
241: gear box 241a: pinion gear
242: Generator 243: Battery
244: Solar power generation section
250: variable weight
260:
270: water supply and discharge means

Claims (8)

Ship body;
A vertical shaft vertically arranged to be movable in a vertical direction with respect to the ship body;
A fluid resistance plate which is provided at a lower end of the vertical shaft in a horizontal plane and is wired in a forward and backward direction;
An elastic body provided between the vertical shaft and the ship body;
A power generating unit generating power using the relative motion between the vertical shaft and the ship body;
A variable weight provided on the vertical shaft and having a variable weight;
A shaking motion measuring unit provided on the ship body for measuring a vertical oscillation period of the ship body;
A weight varying means for varying the weight of the variable weight according to a vertical oscillation cycle of the ship body measured by the oscillation measuring unit;
And a wave generator connected to the wave generator.
The method according to claim 1,
The variable weighing device is a water tank in which water is stored, and the weight changing means is a water supply and discharge means for supplying water to the water tank or discharging water from the water tank, And a controller for controlling the water supply and discharge means according to the cycle.
The method according to claim 1,
The power generator includes a gear box provided in the ship body for converting up and down motion of the vertical shaft into the rotary body with respect to the ship body, a generator for converting the rotary motion converted by the gearbox into electric power, And a battery for storing one electric power.
The method of claim 3,
Wherein the battery is further connected to a photovoltaic power generation unit.
The method according to claim 1,
Wherein the vertical shaft has a shape in which a cross section of a circular shape extends in a vertical direction.
delete The method according to claim 1,
Wherein the ship body is a catamaran line where two hulls are connected by a single deck, and the vertical shaft is arranged to penetrate the deck.
The method according to claim 1,
Wherein the shaking motion measuring unit is an acceleration sensor.

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