KR20030050834A - Current power generating system installed in cassion - Google Patents

Abstract

PURPOSE: An oceanic current power generation system installed in a breakwater is provided to reduce the cost for installing an oceanic current power generation system, to use the kinetic energy and potential energy as an energy resource, and to easily install, repair, and maintain a generator module. CONSTITUTION: A tunnel(52) is penetrated through a breakwater(51) to incline downwardly from the ocean toward the land. Hatches(53,53') are installed in the front and rear ends of the tunnel to cut off an ocean current. A generator module(60) is installed in the lower end face of the rear portion of the tunnel. A main electricity collector(61) stores the electricity generated from the generator module.

Description

CURRENT POWER GENERATING SYSTEM INSTALLED IN CASSION}

The present invention relates to an ocean current generation system that is constructed in a region where the difference between tides is large or the speed of ocean current is high, and more specifically, the kinetic energy and potential energy of the currents hitting the breakwater are developed as energy sources, and the interior of the breakwater. As it is installed in the center, it does not require a separate development site, and relates to a current generation cost-effective power generation system.

Conventional power generation includes thermal power generation using fossil fuels, hydropower generation using potential energy of water, wind power generation using kinetic energy of wind, solar power generation using solar energy, nuclear power generation 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, wind power and solar power generation are governed by the effects of weather conditions, so the power generation system cannot be operated in the absence of wind and when solar radiation is cut off.

Nuclear power generation is subject to enormous costs in investing in facilities to block radiation leaks and incurring enormous costs in waste disposal, and in the event of a single accident, serious environmental damage can occur. There is always a risk.

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 be used in practice. The minimum effective drop for energy conversion is about 5 m, and the system must be installed in a location where at least about 5 m of tide occurs. To achieve greater efficiency, the difference between tidal points on different sides of the dam It must be large.

There is a difference between tidal power generation system and current generation system that generate power by using only the pressure difference by the potential energy of seawater between the two sides with respect to the constructed dam. The biggest difference among these is the current movement It is in terms of actively using energy. Therefore, current generation is not only the region where the tidal difference is big, but also the region where the ocean current is high, and it is suitable location condition, and it can be actually developed even if it is smaller than the tide of 5 m or more required for tidal power generation.

In addition, current generation is advantageous over other power generation systems in that it uses a clean energy source that is free of pollution while continuing to generate power regardless of weather changes.

Reference numerals “∇” shown in all the drawings below indicate sea level.

Figure 1 shows a schematic diagram of a general tidal power generation system, the general tidal power generation system is generated by using the difference between the tidal pressure (water pressure difference).

As shown in FIG. 1, a dam 1 is provided to block seawater or bays where large differences between tides occur and to confine seawater. The lower portion of the dam (1) is provided with aberration generator 4 for converting the rotational energy of the aberration and the rotational energy of the aberration while the seawater is moved by the water pressure difference at the time of high or low tide to electrical energy.

The aberration of the aberration generator 4 is designed to be rotatable about an axis parallel to the dam 1. That is, the aberration of the aberration generator (4) is rotated by the upper part of the aberration around the axis when the seawater flows from the sea to the land direction, and the bottom of the aberration at the time of ebb that the seawater is discharged from the land to the ocean direction It is rotated under hydraulic pressure.

The general tidal power generation system uses hydraulic pressure differentials of sea currents (hereinafter referred to as ocean side currents) located in the ocean direction and land currents (hereinafter referred to as land side currents) based on the dam (1), but the lower portion of the dam (1). Since the tunnel is formed horizontally in the sea, it uses the kinetic energy of the ocean side lower current, while not using the kinetic energy of the upper ocean current. It is advantageous to use the kinetic energy of the upper current because the lower ocean current moves at a lower speed than the upper current by the frictional force of the sea bottom. In this general tidal power generation system, the upper ocean current having kinetic energy greater than the kinetic energy of the ocean side lower current only has a minimal effect on the movement of the lower current by inertial forces, and most of the tidal energy is supported by the dam 31. Since it is lost, there was a problem that can not effectively use the kinetic energy of the upper ocean current.

In addition, the general tidal power generation system is designed in such a way that the current generation system should be installed at the same time as the dam (1). That is, the dam 1 for power generation is constructed. Therefore, the general tidal power generation system has a problem that it is practically difficult to install in dams, breakwaters, etc. that have already been constructed for purposes other than power generation.

In addition, since the hatch (not shown) is installed only at the side end (hereinafter referred to as the front end) close to the ocean current of the tunnel, it is necessary to perform work for installation, maintenance and maintenance of the aberration generator 4 including the aberration and the generator. In addition, there is a problem that the sewage flowing into land currents through rivers is introduced into the tunnel through the side end (hereinafter referred to as the rear end) close to the land side currents of the tunnel 2, which makes the operation difficult.

In addition, there has been a problem in that a minimum effective drop of at least about 5 m or more must be formed in order to convert the energy into usable energy as described above.

2 shows an example of a tidal power generation system according to the prior art.

The conventional tidal power generation system as shown in Figure 2 is a power storage tank 11 for storing the sea water primarily during high tide, and a water storage tank for storing the sea water to maintain a high water pressure of the sea water transferred from the power generation reservoir 11 (12), multiple aberrations 14 rotated by the pressure of seawater descending from the water reservoir 12, and a drain 15 provided so that the seawater rotated by the multiple aberrations 14 can be quickly discharged. ) Is configured to include.

In the conventional tidal power generation system as described above, by concentrating the seawater in the lower portion of the water reservoir 12 to hit the multiple aberrations 14 with a high water pressure and place the multiple aberrations 14 in a relatively low place to solve the problem of small drop freely Although it is possible, expensive equipment cost and installation cost is required, there is a problem that can not use the kinetic energy of the sea current moving by tidal or topographic effects or natural forces such as wind.

3 illustrates another example of the conventional tidal power generation system, and illustrates a state of generating power using potential energy of seawater installed in the breakwater 21 that is already constructed and moved by hydraulic difference.

In the conventional tidal power generation system of FIG. 3, a pipeline 28 penetrating the interior of the breakwater 21 is installed, and the seawater falling from the pipeline 28 rises or falls as the sea level fluctuates. Strike the aberration 24 mounted on the 29, the rotational energy of the aberration 24 is transferred to the generator 25 by the belt and pulley connection to produce electrical energy, the aberration 24 and the floating plate A separate breakwater 22 is constructed to allow 29 to ascend or descend in certain areas.

This conventional tidal power generation system can be generated by using the freefall by hitting the water wheel 24 through the pipeline 28, the seawater located in the ocean direction based on the breakwater (21), but of the seawater moving by natural force The kinetic energy is considerably dissipated at the inlet of the pipeline 28, the construction cost for constructing the breakwater 22 or the dam to be separately required is added, the stable rise and fall of the floating plate 29 is difficult there was.

In order to solve the above problems, an object of the present invention is to form a slope sloped downhill from the ocean side to the land side inside the breakwater already constructed or to be built by installing a generator module on the lower end of the tunnel The installation cost can be low because the breakwater is used as the support member for the support, and a large amount of kinetic energy and potential energy of the upper ocean current on the ocean side can be used as an energy source, and the generator is installed by installing hatches on both sides of the tunnel. To facilitate the installation, maintenance and maintenance of the module, and to provide a breakwater-integrated current generation system that does not require a separate development site.

1 is a schematic diagram of a general tidal power system.

2 is a cross-sectional view showing an example of the tidal power generation system according to the prior art.

3 is a cross-sectional view showing another example of the tidal power generation system according to the prior art.

4 is a cross-sectional view showing an ocean current power generation system according to the present invention.

Figure 4 is a front view showing the current generation system in accordance with the present invention.

5 is a front view showing a generator module of the current generation system according to the present invention.

* Description of the symbols used in the main parts of the drawings *

51: breakwater

52: tunnel

53, 53 ′: hatch

54: propeller

55: support structure

56: support shaft

57: central axis

60: generator module

61: main current collector

The present invention for realizing this

What is claimed is: 1. An ocean current power generation system for generating current into an energy source;

Tunnels penetrating downhill from the ocean to land in the breakwater, hatches installed to block the currents at the front and rear ends of the tunnel, generator modules installed at the bottom surface of the rear end of the tunnel, and rear end of the breakwater It is installed at the top of the unit provides a breakwater internal installation power generation system, characterized in that configured to include a main current collector that stores the power generated from the generator module,

The generator module is a support structure is installed on the lower surface of the tunnel, one side is coupled to the upper end of the support structure extending vertically upwards to the lower end of the tunnel, and the other side of the support shaft parallel to the tunnel lower surface It is characterized in that it comprises a central axis to be coupled, and a propeller installed at the front end of the central axis having at least two blades.

BEST MODE Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 shows a cross-sectional view of the current generation system according to the invention, FIG. 5 shows a front view of the current generation system according to the invention, and FIG. 6 shows a generator module 60 of the current generation system according to the invention. Doing.

The characteristic of the breakwater-mounted current generation apparatus according to the present invention shown in FIG. 4 is that at least one tunnel 52 is formed to penetrate downward from the ocean to the land in the breakwater 51, and each of the tunnels is formed. Generator modules 60 are respectively provided on the lower end surface of the side portion (hereinafter, referred to as the rear end) close to the land of 52, and hatches 53 and 53 'for blocking the currents at the front and rear ends of the respective tunnels 52. Will be installed separately.

The tunnel 52 is preferably formed perpendicular to the longitudinal direction of the breakwater 51 at regular intervals along the longitudinal direction of the breakwater 51.

In order to form effective energy, that is, energy that can be generated and practically used, currents having a high speed or a large position difference (or hydraulic pressure difference) must be used. Accordingly, the tunnel 52 inside the breakwater 51 is formed to be inclined downhill from the ocean to the land direction in order to use the kinetic energy of the upper current larger than the kinetic energy of the ocean side lower current so that the front end of the tunnel 52 It is higher than the lower end of the tunnel 52. In addition, since the inclined tunnel 52 can use the difference in the potential energy of the ocean side and the land side current based on the breakwater 51 at the same time, it is possible to form a larger effective energy that can actually generate power. It is possible.

The tunnel 52 increases the effect of the breaking wave action, which is the purpose of the breakwater 51 itself, and serves to further increase the breaking wave action as the number increases.

The cross section of the tunnel 52 formed in the breakwater 51 shown in FIG. 5 is rectangular, but can be formed in a circular shape in order to maximize the kinetic energy of the current. In addition, by forming the lower end of the circular tunnel in a plane or a cross-section of the ablong (ablong) form of symmetry, it can be provided to facilitate the installation of the generator module 60 while maximizing the kinetic energy of the current. It can be provided for the operator's convenience during maintenance and maintenance work.

The hatches 53 and 53 'installed at the front and rear ends of the tunnel 52 are introduced into the current and rear ends of the tunnel 52 when the generator module 60 is installed, repaired, and maintained. By blocking the currents including the river water so that the worker can work safely in the tunnel (52).

The generator module 60 is a support structure 55 is installed on the bottom surface of the rear end of the tunnel 52, one side is coupled to the upper end of the support structure 55 vertically upwards to the bottom surface of the tunnel 52 An extended support shaft 56, a central shaft 57 coupled to the other side of the support shaft 56 in parallel with the lower surface of the tunnel 52, and a side close to the ocean of the central shaft 57 ( And a propeller 54 installed at at least two (most preferably two or three) blades at the front end).

When the current flows over the front end of the tunnel 52, the hatch 53 is opened to introduce the current, and the current flows through the open hatch 53 ′ while hitting the propeller 54 of the generator module 60. . At this time, the kinetic energy and the potential energy of the current in the front end of the tunnel 52 are converted into kinetic energy when the propeller 54 strikes, and the kinetic energy of the converted current is rotated by the propeller 54. It is converted into electrical energy through a generator that can be installed at (57).

The support shaft 56 and the support structure 57 have an air-foil cross section to facilitate the movement of currents and to prevent breakage and separation of the equipment 56 and 57 due to the movement of the currents. It can be manufactured to have. In addition, the support structure 57 may be formed so that the upper portion has a curved outer circumferential surface so as not to receive a strong hydraulic pressure from the current.

The electric energy converted from the generator module 60, that is, electric power, is primarily stored as the main current collector 61 installed at the upper end of the breaker 51 through the electric transfer means (not shown). As described above, the main current collector 61 is installed at the upper end of the rear end of the breakwater 51, thereby increasing the efficiency of the space.

Such a breakwater-integrated current generation system of the present invention is installed on a breakwater that is already constructed or a planned breakwater, thereby increasing the efficiency of land use by eliminating the need for a separate development site. It can be introduced into a power source.

As described above, the breakwater-integrated current generation system of the present invention can be installed on all of the breakwaters already constructed or to be constructed, and can be installed at low cost, and the current flows through the inclined tunnel of the breakwater. A large amount of kinetic energy and potential energy of the current can be used as an energy source, and by installing hatches on both sides of the tunnel, it is easy to install, repair, and maintain a generator module.

In addition, by forming an inclined tunnel in the breakwater flows into the current has more improved breaking wave effect,

In addition, the need for a separate development site increases the efficiency of land use, and has the effect of introducing islands and coastal facilities as a continuous power source.

While the invention has been shown and described with respect to particular embodiments, it will be apparent to those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can grow up easily.

Claims (2)

What is claimed is: 1. An ocean current power generation system for generating current into an energy source; A tunnel 52 which penetrates downhill from the ocean to land in the breakwater 51, hatches 53 and 53 'installed at the front and rear ends of the tunnel 52 to block the current; Generator module 60 is installed on the lower end of the rear end of the tunnel 52, and the main current collector 61 is installed on the top of the rear end of the breakwater 51 and the power generated from the generator module 60 is stored. The breakwater-installed current generation power generation system, characterized in that configured by. The method of claim 1, The generator module 60 is a support structure 55 is installed on the bottom surface of the tunnel 52 and one side is coupled to the upper end of the support structure 55 to support vertically extending upward to the bottom surface of the tunnel 52 A shaft 56, a central shaft 57 coupled to the other end of the support shaft 56 in parallel with the tunnel bottom surface, and a front end of the central shaft 57 and provided with at least two blades. Breakwater installed inside the current generation system, characterized in that comprising a propeller (54) to.