KR20030050835A - Bridge current power generating system - Google Patents

Abstract

PURPOSE: An oceanic current power generation system attached to a bridge is provided to reduce the time and cost for installation, to remove the necessity of a separate development site, and to easily repair the power generation system regardless of the depth of water. CONSTITUTION: At least one electricity collector(11) is installed in a lower pier(3) of a bridge(1) or the lower end of an upper plate(2) of the bridge. A connecting member(12) formed in the number the same as that of the electricity collector is combined to the electricity collector and extended downward vertically. A generator module(20) formed in the number the same as that of the connecting member is installed on the outer face of the connecting member.

Description

Bridge Attached Current Generation System {BRIDGE CURRENT POWER GENERATING SYSTEM}

The present invention relates to an ocean current generation system that is installed on a bridge so that the generator module is located inside the current, and more specifically, an already built bridge or a bridge under construction in a region where the tidal difference is large or the depth of water is not high. By installing in the present invention, it is possible to provide a bridge-attached current generation system that can be installed in a short period of time as well as low in manufacturing cost and easy to repair and repair the 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 differences by blocking seawater or bays with dams, installing seawater generators, and dams. 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.

1 and 2 illustrate an ocean current generation system according to the prior art, and FIG. 1 illustrates an example of the ocean bottom fixed current generation system according to the prior art, which must have a separate support member that can be fixed to the ocean bottom. And Figure 2 shows another example of a bottom fixed water current generation system according to the prior art that must have a separate support member that can be fixed to the bottom.

The seafloor fixed current generation system as shown in FIG. 1 is a submerged system operating below the sea level, and includes four legs 102 fixed to the sea bottom and a platform 101 supported by the legs 102. A supporting member is provided.

The generator module 103 having a blade is installed at the bottom of the vertical structure 106 that is supported by the platform 101 and can move vertically up and down with respect to the platform 101.

The conventional seafloor stationary current generation system generates clean energy without pollution and is capable of continuous development regardless of climate change, but requires installation of a separate bridge 102 and a platform 101 for supporting the installation cost and production. The cost is increased. In addition, there is a problem that it is difficult to install in the case of installation in a deep water area and the installation cost is further increased.

FIG. 2 shows an ocean current generation system with four legs 102 and two legs 202 and rails 201 replacing the platform 101 of the ocean bottom stationary current generation system shown in FIG. 1. .

The rail 201 is supported so as to be movable up and down vertically in a groove formed in the two legs 202, and a generator module including a support fixture supported to move along the rail 201 at the bottom of the rail 201. 203 is provided.

In the conventional seafloor fixed current generation power generation system shown in Figure 2 also has to install a separate bridge 102 and the rail 101, the installation cost and manufacturing cost increases, it is difficult to install when installed in the deep water There is a problem that the installation cost is further increased.

In order to solve the problems described above, the object of the present invention is installed on the bridge already under construction or the bridge under construction, there is no need to install a structure for a separate support, easy installation work can be installed in a short time The low cost of installation, no need for separate development site, and easy to repair and repair the device during use, can be used as a continuous power source for island or coastal facilities. To provide a system.

1 is a perspective view showing an example of the current generation system according to the prior art.

Figure 2 is a perspective view showing another example of the bottom surface fixed current generation system according to the prior art.

Figure 3 is a front view showing a bridge-attached current generation system according to an embodiment of the present invention.

Figure 4 is a side view showing a bridge-attached current generation system according to an embodiment of the present invention.

5 is a cross-sectional view taken along line II ′ of FIG. 4.

Figure 6 is a front view showing a bridge-attached current generation system according to another embodiment of the present invention.

7 is a front view showing the bridge-attached current generation system according to another embodiment of the present invention.

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

1: bridge

2: tops

3: lower piers

4: upper piers

11, 11 ′, 11 ″: current collector

12, 12 ′, 12 ″: connecting member

13: supporting means

16: generator

17: propeller

18: Hub

21: main current collector

The present invention for realizing this,

An ocean current power generation system using kinetic energy of ocean current as an energy source;

At least one current collector installed on the lower surface of the upper plate of the bridge or on the side of the lower piers of the bridge,

A connection member having one side coupled to the current collector, and

A propeller having respective guide holes formed therein so that the connection member is inserted and each generator converting kinetic energy into electrical energy, and at least two blades installed at the front end of the generator and rotated from the current; It provides a bridge-attached current generation system characterized in that it comprises a generator module consisting of a semi-elliptic hubs respectively installed at the front end of the propeller.

In addition, the connecting member is characterized in that the cross-section is produced in the form of airfoil,

In addition, the generator module is characterized in that it comprises a moving means to move along the outer peripheral surface of the connection member.

BEST MODE Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. For reference, the same reference numerals are given to the same components having the same function.

3 and 4 show a bridge-attached current generation system according to an embodiment of the present invention, Figure 3 is a bridge (1) already installed in the area where the current between the tidal tidal difference or the high current moving at high speed (1) ) And a bridge-attached ocean current generation system according to an embodiment of the present invention is installed vertically on the lower surface of the upper plate (2) of the bridge (1), Figure 4 is a front view of the present invention of Figure 3 4 is a side view of the bridge-attached current generation system according to an embodiment, and FIG. 5 is a cross-sectional view of the connecting member 3 of the bridge-attached current generation system according to one embodiment of the present invention. The cross section according to II 'is shown. For reference, reference numeral “” on the drawing indicates sea level.

At least one current collector 11 installed on the lower surface of the upper plate 2 of the bridge 1 may primarily store the electrical energy converted to the kinetic energy of the sea current.

The connection member 12 is formed in the same number as the current collector 11 and extends vertically downwards by coupling one side portion to the bottom of the current collector 11, respectively, to transfer electrical energy to the current collector 11. Electric transfer means (not shown), such as cables, may be incorporated.

As an example for fixing the connection member 12 to the current collector 11, fixing means 13 composed of a fixing plate and a fixing pin may be used, respectively, and the fixing pin may be used for vibration received by the connection member 12. It is designed to be strong enough. The connecting member 12 reduces the resistance due to the flow of the current, and the vertically extending cross-section so that the current can flow smoothly can be manufactured in the air-foil (air-foil) shape.

The generator module 20, which is formed in the same number as the connection member 12 and converts kinetic energy generated by currents into electrical energy, is installed on the outer circumferential surface of the connection member 12, respectively.

The generator module 20 includes a propeller 17 having two or more blades (more preferably two or three blades) for converting kinetic energy of sea current into mechanical rotational kinetic energy, and the propeller 17 Coaxially coupled to the front end of the () and the semi-elliptic hub (18) for uniform distribution of the flow of fluid, and the coaxial with the rear end of the propeller 17 is rotated from the propeller (17) It is composed of a generator 16 for converting kinetic energy into electrical energy.

At this time, the generator 16 of the generator module 20 is installed on the outer peripheral surface of the connection member 12 is formed with a guide hole therein so that the connection member 12 is inserted, generator module 20 It may be manufactured to be simply fixed to the connecting member 12, or may be manufactured to move along the connecting member 12. Various moving means (not shown) may be provided to allow the generator module 20 to move along the connection member 12 as described above. For example, the moving means is formed such that the other side of the string connected to one side of the generator module 20 is fixed to the pulley of the upper end of the current collector 11 or the connection member 12, the generator module 20 according to the rotation of the pulley. It is possible to move along this connecting member 12 (not shown). In addition, the movement means is provided with a mechanical device consisting of a gear and a motor inside the generator module 20, it may be formed to move along the infinite track formed at a predetermined interval on the surface of the connection member 12 (not shown) ).

The bridge-mounted mobile current generator system, in which the generator module 20 can move along the connecting member 12, requires a higher installation cost and device cost than the bridge-mounted fixed current generator system. Since it can be moved above sea level, it is advantageous in that the generator module 20 can be moved so that the equipment can be easily repaired, repaired, and maintained, thereby reducing the time and cost, as well as operating the water current at the depth with the highest speed. .

As described above, the electrical energy generated through each generator module 20 is primarily transferred to each current collector 11 installed at the lower end of the upper plate 2 of the bridge 1, and the respective current collectors ( A main current collector 21 in which electrical energy of 11) is transferred and stored again through a cable (not shown) is illustrated in FIG. 1. The main current collector 21 may be installed inside the upper end of the upper pier 4 to increase the efficiency of the space, and the upper pier 4 is designed to have sufficient strength.

When the length of the bridge 1 is considerably long, the efficiency of the current generation system is prevented from being lowered by the up and down swing of the upper plate 2 of the bridge 1, and the damage and unstable state of the bridge 1 and the current generation system are prevented. Figure 6 is a bridge-attached current generation system according to another embodiment of the present invention to prevent.

As shown in FIG. 6, a current collector 11 ′ is installed at one side or both sides of the lower pier 3 of the bridge 1, and one side portion of the connection member 12 ′ is coupled to the current collector 11 ′ at right angles. Extends parallel to the upper plate 2 of the bridge 1 and the other side is provided with a connecting member 12 'extending vertically downward from a right angle portion, and the generator module 20 is connected to the connecting member 12. The present invention proposes a mobile current generation system installed on the outer circumferential surface of the other side. Therefore, by moving the generator module 20 vertically upward in accordance with the height of the sea level fluctuating with respect to the top plate 2 of the bridge 1, the generator module 20 can be located in the water depth having a high speed, As mentioned above, it is convenient to be able to work on the sea level for repair, maintenance and maintenance work of the generator module 20.

7 shows a bridge-attached current generation system according to another embodiment of the present invention that can be applied when the length of bridge 1 is quite long.

As shown in FIG. 7, a current collector 11 ″ is installed at one side or both sides of the lower pier 3 of the bridge 1, and one end of the connection member 12 ″ is coupled to the current collector 11 ″. It extends so as to be inclined with the top plate 2 of the bridge (1), the generator module 20 presents a mobile current generator system is installed on the outer peripheral surface of the connecting member (12). Therefore, by moving the generator module 20 in accordance with the height of the sea level fluctuating with respect to the top plate 2 of the bridge (1), the generator module 20 can be located in the water depth having a high speed, as described above Likewise, it is convenient to be able to work on the sea level for repair, maintenance and maintenance work of the generator module 20.

In addition, in the case where the length of the bridge 1 is considerably long, the bridge-attached current generation system according to the present invention may be installed so as to extend in a direction opposite to the flow of the current from the front or side of the lower bridge 3.

Even when the bridge-attached current generation system is installed to be inclined downwardly in a direction opposite to the flow of the current from the front or side of the lower portion of the bridge 3, the generator module 20 can be manufactured to be moved and moved above or below the sea level. Can be.

It will be apparent that the current generation system according to the present invention can be installed on the bridge 1 under construction as well as the bridge 1 already installed.

The bridge-attached current generation system of the present invention as described above is installed on the upper plate or lower pier of the bridge already under construction or the bridge under construction, so it is not necessary to install a structure for a separate support, and thus it can be installed in a short period of time. Inexpensive, installation does not need to consider the depth, and no separate development site is required.

In addition, the generator module can be moved above or below the sea level along the connecting member can be manufactured to facilitate the repair and repair of the device,

In addition, pollution-free clean energy accompanying global environmental policy is continuously developed regardless of climate change, and thus it can be used as a continuous power source for coastal facilities.

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 (3)

An ocean current power generation system using kinetic energy of ocean current as an energy source; At least one current collector 11, 11 ′, 11 ″ provided on the lower surface of the upper plate 2 of the bridge 1 or on the side of the lower pier 3 of the bridge 1, Connecting members 12, 12 ′, 12 ″ having one side coupled to the current collectors 11, 11 ′, 11 ″, respectively, and Guide holes are formed inside the insertion members 12, 12 ′, and 12 ″, respectively, and are installed in front of the generator 16 and current generators for converting kinetic energy into electrical energy. It comprises a generator module 20 consisting of a propeller 17 each having at least two or more blades rotated from, and a semi-elliptic hub 18 respectively installed at the front end of the propeller 17 Bridge attached current generation system characterized in that. The method of claim 1, The connecting member (12, 12 ', 12 ") is a bridge-attached current generation system, characterized in that the cross section is produced in the form of airfoil. The method according to claim 1 or 2, Bridge generator type current generation system, characterized in that the generator module 20 is provided with a moving means to move along the outer circumferential surface of the connecting member (12, 12 ').