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WO2009123375A1 - Suspended matter blocking fence for an ocean power system - Google Patents

Suspended matter blocking fence for an ocean power system Download PDF

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Publication number
WO2009123375A1
WO2009123375A1 PCT/KR2008/002415 KR2008002415W WO2009123375A1 WO 2009123375 A1 WO2009123375 A1 WO 2009123375A1 KR 2008002415 W KR2008002415 W KR 2008002415W WO 2009123375 A1 WO2009123375 A1 WO 2009123375A1
Authority
WO
WIPO (PCT)
Prior art keywords
lake
sea
suspended matter
structures
blocking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2008/002415
Other languages
French (fr)
Inventor
Kyung Soo Jang
Jung Eun Lee
Jae Won Jang
Seung Won Jang
Jun Yeul Lee
Jae Woon Lee
Woong Bin Chang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2009123375A1 publication Critical patent/WO2009123375A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
    • E02B8/023—Arresting devices for waterborne materials
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E02B15/0814—Devices for reducing the polluted area with or without additional devices for removing the material with underwater curtains
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E02B15/085—Details of connectors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
    • E02B15/0857—Buoyancy material
    • E02B15/0885—Foam
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
    • E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
    • E02B9/02—Water-ways
    • E02B9/04—Free-flow canals or flumes; Intakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/08—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator for removing foreign matter, e.g. mud
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
    • F03B13/268—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy making use of a dam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • F05B2260/63—Preventing clogging or obstruction of flow paths by dirt, dust, or foreign particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

Definitions

  • the present invention relates to a suspended matter blocking fence for an ocean power system, and more particularly, to a suspended matter blocking fence for an ocean power system, which is capable of protecting ocean power facilities by preventing suspended matters in a sea side and a lake side from flowing into turbine generators and sluice structures in an ocean current power generation system.
  • the ocean current speed in the west coast of Korea is around 1.0 m/s or less.
  • the speed of ocean currents, which are discharged from the lake to the sea through sluice gates is much faster than this.
  • some of the suspended matters that are discharged with seawater flow backward to the intlet of water turbine generators in the ocean power plant where the ocean current speed in a sea side is low.
  • the present invention has been created in consideration of the above circumstances.
  • the object of the present invention is to provide a suspended matter blocking fence for an ocean power system to prevent suspended matters in the sea and the lake from flowing into turbine generators and sluice structures in an ocean power plant so as to protect ocean power facilities and prevent the lowering of operation capacity of the ocean power plant.
  • the present invention is to provide a suspended matter blocking fence for an ocean power system having turbine structures in a barrage to divide a sea side and a lake side and sluice structures at one side of the turbine structures, which comprises a lake-side suspended matter blocking barrier installed at the lake side to prevent the suspended matters from flowing from the lake into the turbine and sluice structures; and a sea-side suspended matter blocking barrier installed at the sea side to prevent the suspended matters from flowing from the sea into the turbine and sluice structures.
  • the lake-side and sea-side suspended matter blocking barriers comprise a blocking board having a predetermined width and length; floating bodies, which are installed in fixed intervals along the longitudinal direction on the blocking board, and float the blocking board on the water surface with buoyancy; a net, which is hung downward from the blocking board; a fixing means to fix the blocking board in the seabed; and a connection means to connect a plurality of blocking boards in the longitudinal direction.
  • the fixing means consists of ropes or wires that fix the blocking board in the seabed
  • the connection means consists of connection hooks provided at both ends of the blocking board. In the case where the connection length of the blocking board is too long, the connection hook may be connected by installing a prop pile inserted into the seabed.
  • the suspended matter blocking fence of the present invention for the ocean power plant protects the facilities of the ocean power plant by preventing the suspended matters from flowing into turbine generators and sluices. Because the ocean power plant can run continuously without troubling ocean power generation, the operating rate of ocean power plant is improved.
  • Fig. 1 is a structural view illustrating a suspended matter blocking fence for an ocean power plant according to an embodiment of the present invention
  • Fig. 2 is a sectional view taken along a line A-A in Fig. 1 ;
  • Fig. 3 is a sectional view taken along a line B-B in Fig. 1 ;
  • Fig. 4 is a front view illustrating the suspended matter blocking fence according to the present invention;
  • Fig. 5 is a plane view of Fig. 4.
  • sluice structures 30 having sluices at one side of the turbine structures 20 are installed in a barrage 10 to divide a sea side 14 and a lake side 12.
  • the turbine structures 20 and sluice structures 30 are connected through a connection structure 5 in the middle.
  • the turbine generators 22 are installed so as to generate power when the ocean current that flows from the sea side 14 to the lake side 12 passes the turbine structures 20 as shown in Fig. 2 in a state that sluices 32 are closed as shown in Fig. 3.
  • the sluices 32 are opened during ebb to discharge seawater from the lake side 12 to the open sea 14.
  • a lake-side suspended matter blocking barriers 100 is installed to prevent suspended matters from flowing into the turbine structures 20 and the sluices 32 from the lake when the sluices 32 are opened and the seawater is discharged to the open sea.
  • These suspended matters contain various sewages and wastes that have flown from the land to the lake.
  • a sea-side suspended matter blocking barrier 200 is installed in the sea side 14 to prevent the suspended matters in the ocean current, which flows from open sea to the lake 12, from flowing into the turbine structures 20 and the sluices 32.
  • the structure of the lake-side suspended matter blocking barrier 100 and the sea-side suspended matter blocking barrier 200 are identical with each other.
  • the structure of an embodiment of the lake-side suspended matter blocking barrier 100 will be described based on Fig. 4 and Fig. 5.
  • the suspended matter blocking barrier 100 has a blocking board 102 with a predetermined width and length, and floating bodies 104 are installed in fixed intervals on the blocking board 102 to keep the blocking board 102 upright on the water surface with buoyancy.
  • the blocking board 102 may be formed in a straight type as shown in Fig. 5 or a curved type.
  • the blocking board 102 may be made of light materials with low specific gravity such as resin, and has waterholes 103 to reduce the resistance of seawater.
  • the floating bodies 104 may be made of polyurethane foams wrapped by polyethylene cover or plastics in a hollow round shape.
  • a net 106 is installed downward from the blocking board 102.
  • the net 106 may prevent the suspended matters from approaching the turbine structures 20 and the sluices 32.
  • a rope 108 to be fixed in the seabed is connected to the blocking board 102, and connection hooks 110 to connect a plurality of blocking boards 102 are installed in longitudinal direction at both ends of the blocking boards 102.
  • the connection hooks 110 are connected by installing prop piles 120 inserted in the seabed as shown in Fig. 1.
  • the ends of the rope 108 are connected through anchor bolts 109 which are installed in the seabed.
  • a sea-side suspended matter blocking barrier 200 and a lake- side suspended matter blocking barrier 100 are installed in the front and rear of the barrage 10, respectively, as shown in Fig. 1.
  • the lake-side suspended matter blocking barrier 100 is installed in the lake side 12 in the rear of the turbine structures 20 and the front of the sluices 32 while the sea-side suspended matter blocking barrier 200 is installed in the sea side (14) in the front of the turbine structures 20 and the rear of the sluices 32.
  • the lake-side suspended matter blocking barrier 100 and the sea-side suspended matter blocking barrier 200 are connected by a plurality of blocking boards 102 and connection hooks 110 and arranged in the front and rear of the barrage 10.
  • the connection hooks 110 are connected by installing the prop piles 120 inserted in the seabed as shown in Fig. 1.
  • the lake-side suspended matter blocking barrier 100 installed in this way can prevent various sewages and wastes, which have flown from the land to the lake, from approaching the turbine structures 20 and sluice structures 30 using the blocking boards 102 and nets 106.
  • the net 106 is formed in a spaced net structure so that it will have less resistance of seawater and small debris can flow through it.
  • the suspended matters such as various sewages and wastes in the lake 12 are blocked by the lake-side suspended matter blocking barrier 100 as shown in Fig. 3.
  • the suspended matters that flow lower than the water surface are blocked by the net 106 and the suspended matters on the water surface are blocked by the blocking board 102.
  • the turbine generators 22 can be protected because the suspended matters such as various sewages and wastes that pass through the sluices 32 are removed and are prevented from flowing back into the turbine generators 22 of the turbine structures 20.
  • the suspended matters such as various sewages and wastes in the sea side are blocked by the sea-side suspended matter blocking barrier 200 as shown in Fig. 2 to prevent them from approaching the turbine structures 20. Therefore, the facilities of the turbine structures 20 are safely protected from sewages and wastes and the flow of sewages and wastes into the water turbine generators 22 is fundamentally blocked to prevent them from interfering with power generation.
  • the suspended matters as various sewages and wastes that flow from the land to the lake are blocked by the lakeside suspended matter blocking barrier 100 and the suspended matters that flow from the sea side to the lake side during power generation are prevented from approaching the turbine structures 20 so as to protect the power generation facilities including the turbine generators 22 and stabilize the operating ration of power generation.
  • the blocking boards 102 are fixed by ropes 108 to be fixed in the seabed, but it is also possible to fix them using wires or round pipes instead of ropes 108. Furthermore, in the case where the connection length of blocking boards 102 is long, they may be connected by installing prop piles 120 in a fixed interval as shown in Fig. 1. Meanwhile, the present invention is also good even if the sea-side suspended matter blocking barrier 200 installed in the sea side 14 is installed only in front of the water turbine structures 20.
  • the Sihwa Lake Tidal Power Plant that uses single-current flooding type tidal power generation generates power when seawater flows through the turbine generators from the sea side to the lake side during flood, and discharges seawater from the Sihwa Lake to the sea side during ebb.
  • the turbine generators can be effectively protected from the potential suspended matters during power generation by installing a sea-side suspended matter blocking barrier 200 in front of the turbine generators between the new site shore protection at the left coast in the sea side and the Keungari Island.
  • the suspended matters during discharge are blocked by the lake-side suspended matter blocking barrier 100 that is installed in the upstream, they are prevented from flowing into the turbine generators when the discharged seawater flows back from the sea side.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Oceanography (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Catching Or Destruction (AREA)

Abstract

The present invention is to provide a suspended matter blocking fence for an ocean power system to prevent suspended matters in a sea side and a lake side from flowing into turbine generators and sluice structures so as to protect facilities of the ocean power plant and prevent the lowering of operating capacity of the ocean power plant. The suspended matter blocking fence for the ocean power system, which has turbine structures in a barrage to divide the sea and the lake and sluice structures at one side of the turbine structures, comprises: a lake side suspended matter blocking barrier installed at the lake side to prevent the suspended matters from flowing from the lake into the turbine and sluice structures; and a sea-side suspended matter blocking barrier installed at the sea side to prevent the suspended matters from flowing from the sea into the turbine and sluice structures.

Description

SUSPENDED MATTER BLOCKING FENCE FOR AN OCEAN POWER SYSTEM
[Technical Field]
The present invention relates to a suspended matter blocking fence for an ocean power system, and more particularly, to a suspended matter blocking fence for an ocean power system, which is capable of protecting ocean power facilities by preventing suspended matters in a sea side and a lake side from flowing into turbine generators and sluice structures in an ocean current power generation system. [Background Art]
In order to actively cope with international environmental regulations, which have been reinforced continuously, according to the security of current and future energy demand and the climate and environment change caused by use of fossil fuels, to devote efforts to various changes of energy resources by the development and utilization of new renewable energies and the development of the relevant technologies, which are top priority ranking of national energy policy, is international trends.
In general, endurance period and service life of ocean power facilities are about 30 years, but if the facilities are perfectly maintained and managed, they may be semipermanently used. Accordingly, in order to efficiently manage and maintain ocean power generation plants, it should be actively prevented that large suspended matters in lake or sea water flow into power facilities or injure measurement apparatuses. That is, in order to protect the facilities such as turbine generators from the suspended matters, means to block the area where sea water flows into are required. In particular, when suspended matters such as sewages and wastes flow from the land to a lake during the rainy season and are discharged from the lake to the sea through sluice gates, there is a high possibility that some suspended matters that cannot reach the open sea would flow into the power generation facilities of ocean power systems.
For example, the ocean current speed in the west coast of Korea is around 1.0 m/s or less. In the case of the Sihwa Lake Tidal Power Plant, the speed of ocean currents, which are discharged from the lake to the sea through sluice gates, is much faster than this. As a result, some of the suspended matters that are discharged with seawater flow backward to the intlet of water turbine generators in the ocean power plant where the ocean current speed in a sea side is low.
Therefore, to protect facilities of the ocean power plant and not interfere with power generation, it is preferably to install blocking fences at the front and rear of the ocean power generation facilities including the sea side and the lake side.
[Disclosure of Invention] [Technical Problem] The present invention has been created in consideration of the above circumstances. The object of the present invention is to provide a suspended matter blocking fence for an ocean power system to prevent suspended matters in the sea and the lake from flowing into turbine generators and sluice structures in an ocean power plant so as to protect ocean power facilities and prevent the lowering of operation capacity of the ocean power plant. [Technical Solution]
To accomplish the above objects, the present invention is to provide a suspended matter blocking fence for an ocean power system having turbine structures in a barrage to divide a sea side and a lake side and sluice structures at one side of the turbine structures, which comprises a lake-side suspended matter blocking barrier installed at the lake side to prevent the suspended matters from flowing from the lake into the turbine and sluice structures; and a sea-side suspended matter blocking barrier installed at the sea side to prevent the suspended matters from flowing from the sea into the turbine and sluice structures. According to the present invention, a suspended matter blocking fence for an ocean power system having turbine structures in the barrage to divide a sea side and a lake side and the sluice structure at one side of the turbine structures comprises a lake-side suspended matter blocking barrier installed at the lake side to prevent the suspended matters from flowing from the lake into the turbine and sluice structures and a sea-side suspended matter blocking barrier installed at the sea side to prevent the suspended matters from flowing from the sea into the turbine structures.
In addition, according to the present invention, the lake-side and sea-side suspended matter blocking barriers comprise a blocking board having a predetermined width and length; floating bodies, which are installed in fixed intervals along the longitudinal direction on the blocking board, and float the blocking board on the water surface with buoyancy; a net, which is hung downward from the blocking board; a fixing means to fix the blocking board in the seabed; and a connection means to connect a plurality of blocking boards in the longitudinal direction. In addition, according to the present invention, the fixing means consists of ropes or wires that fix the blocking board in the seabed, and the connection means consists of connection hooks provided at both ends of the blocking board. In the case where the connection length of the blocking board is too long, the connection hook may be connected by installing a prop pile inserted into the seabed. [EFFECTS OF THE INVENTION]
The suspended matter blocking fence of the present invention for the ocean power plant protects the facilities of the ocean power plant by preventing the suspended matters from flowing into turbine generators and sluices. Because the ocean power plant can run continuously without troubling ocean power generation, the operating rate of ocean power plant is improved. [BRIEF DESCRIPTION OF DRAWINGS]
The accompanying drawings illustrate example embodiments of the present invention. Example embodiments may, however, be embodied in different forms and should not be considered as limited to the embodiments set forth in the drawings.
Fig. 1 is a structural view illustrating a suspended matter blocking fence for an ocean power plant according to an embodiment of the present invention; Fig. 2 is a sectional view taken along a line A-A in Fig. 1 ;
Fig. 3 is a sectional view taken along a line B-B in Fig. 1 ; Fig. 4 is a front view illustrating the suspended matter blocking fence according to the present invention; and Fig. 5 is a plane view of Fig. 4. [BEST MODE FOR CARRYING OUT THE INVENTION] Hereinafter, embodiments of the present invention will now be described in greater detail with reference to the accompanying drawings.
As shown in Figs. 1 to 3 turbine structures 20 having turbine generators
22, and sluice structures 30 having sluices at one side of the turbine structures 20 are installed in a barrage 10 to divide a sea side 14 and a lake side 12. In this embodiment of the present invention, the turbine structures 20 and sluice structures 30 are connected through a connection structure 5 in the middle.
In the case of single-current flooding type tidal power generation, the turbine generators 22 are installed so as to generate power when the ocean current that flows from the sea side 14 to the lake side 12 passes the turbine structures 20 as shown in Fig. 2 in a state that sluices 32 are closed as shown in Fig. 3. The sluices 32 are opened during ebb to discharge seawater from the lake side 12 to the open sea 14.
In the lake side 12, a lake-side suspended matter blocking barriers 100 is installed to prevent suspended matters from flowing into the turbine structures 20 and the sluices 32 from the lake when the sluices 32 are opened and the seawater is discharged to the open sea. These suspended matters contain various sewages and wastes that have flown from the land to the lake.
Furthermore, a sea-side suspended matter blocking barrier 200 is installed in the sea side 14 to prevent the suspended matters in the ocean current, which flows from open sea to the lake 12, from flowing into the turbine structures 20 and the sluices 32.
The structure of the lake-side suspended matter blocking barrier 100 and the sea-side suspended matter blocking barrier 200 are identical with each other. The structure of an embodiment of the lake-side suspended matter blocking barrier 100 will be described based on Fig. 4 and Fig. 5.
The suspended matter blocking barrier 100 has a blocking board 102 with a predetermined width and length, and floating bodies 104 are installed in fixed intervals on the blocking board 102 to keep the blocking board 102 upright on the water surface with buoyancy.
The blocking board 102 may be formed in a straight type as shown in Fig. 5 or a curved type. The blocking board 102 may be made of light materials with low specific gravity such as resin, and has waterholes 103 to reduce the resistance of seawater. As examples of materials that have lower specific gravity than water, the floating bodies 104 may be made of polyurethane foams wrapped by polyethylene cover or plastics in a hollow round shape.
A net 106 is installed downward from the blocking board 102. The net 106 may prevent the suspended matters from approaching the turbine structures 20 and the sluices 32.
A rope 108 to be fixed in the seabed is connected to the blocking board 102, and connection hooks 110 to connect a plurality of blocking boards 102 are installed in longitudinal direction at both ends of the blocking boards 102. In the case where the connection length of the blocking boards 102 is long, the connection hooks 110 are connected by installing prop piles 120 inserted in the seabed as shown in Fig. 1. The ends of the rope 108 are connected through anchor bolts 109 which are installed in the seabed.
In the suspended matter blocking fence for ocean power systems as described above, a sea-side suspended matter blocking barrier 200 and a lake- side suspended matter blocking barrier 100 are installed in the front and rear of the barrage 10, respectively, as shown in Fig. 1.
The lake-side suspended matter blocking barrier 100 is installed in the lake side 12 in the rear of the turbine structures 20 and the front of the sluices 32 while the sea-side suspended matter blocking barrier 200 is installed in the sea side (14) in the front of the turbine structures 20 and the rear of the sluices 32.
The lake-side suspended matter blocking barrier 100 and the sea-side suspended matter blocking barrier 200 are connected by a plurality of blocking boards 102 and connection hooks 110 and arranged in the front and rear of the barrage 10. In the case where the connection length of the blocking boards 102 is long, the connection hooks 110 are connected by installing the prop piles 120 inserted in the seabed as shown in Fig. 1.
The lake-side suspended matter blocking barrier 100 installed in this way can prevent various sewages and wastes, which have flown from the land to the lake, from approaching the turbine structures 20 and sluice structures 30 using the blocking boards 102 and nets 106. Preferably, the net 106 is formed in a spaced net structure so that it will have less resistance of seawater and small debris can flow through it.
Thus, even if the sluices 32 open and seawater in the lake side 12 is discharged through the sluices 32, the suspended matters such as various sewages and wastes in the lake 12 are blocked by the lake-side suspended matter blocking barrier 100 as shown in Fig. 3. The suspended matters that flow lower than the water surface are blocked by the net 106 and the suspended matters on the water surface are blocked by the blocking board 102. In this way, the turbine generators 22 can be protected because the suspended matters such as various sewages and wastes that pass through the sluices 32 are removed and are prevented from flowing back into the turbine generators 22 of the turbine structures 20. Meanwhile, when power is generated from the inflow of seawater from the sea side to the lake side 12 during flood, the suspended matters such as various sewages and wastes in the sea side are blocked by the sea-side suspended matter blocking barrier 200 as shown in Fig. 2 to prevent them from approaching the turbine structures 20. Therefore, the facilities of the turbine structures 20 are safely protected from sewages and wastes and the flow of sewages and wastes into the water turbine generators 22 is fundamentally blocked to prevent them from interfering with power generation.
According to the present invention, the suspended matters as various sewages and wastes that flow from the land to the lake are blocked by the lakeside suspended matter blocking barrier 100 and the suspended matters that flow from the sea side to the lake side during power generation are prevented from approaching the turbine structures 20 so as to protect the power generation facilities including the turbine generators 22 and stabilize the operating ration of power generation.
In this embodiment, the blocking boards 102 are fixed by ropes 108 to be fixed in the seabed, but it is also possible to fix them using wires or round pipes instead of ropes 108. Furthermore, in the case where the connection length of blocking boards 102 is long, they may be connected by installing prop piles 120 in a fixed interval as shown in Fig. 1. Meanwhile, the present invention is also good even if the sea-side suspended matter blocking barrier 200 installed in the sea side 14 is installed only in front of the water turbine structures 20.
The Sihwa Lake Tidal Power Plant that uses single-current flooding type tidal power generation generates power when seawater flows through the turbine generators from the sea side to the lake side during flood, and discharges seawater from the Sihwa Lake to the sea side during ebb.
Accordingly, because the ocean current near the Sihwa Lake in the west coast of Korea flows to the northeast, the turbine generators can be effectively protected from the potential suspended matters during power generation by installing a sea-side suspended matter blocking barrier 200 in front of the turbine generators between the new site shore protection at the left coast in the sea side and the Keungari Island.
Furthermore, because the suspended matters during discharge are blocked by the lake-side suspended matter blocking barrier 100 that is installed in the upstream, they are prevented from flowing into the turbine generators when the discharged seawater flows back from the sea side.
The present invention has been described above in relation to several example embodiments shown in the drawings, but should not be considered as limited to the embodiments. Rather, those skilled in the art will recognize that various changes in the details of these embodiments can be made without departing from the scope of the invention.

Claims

WHAT IS CLAIMED IS:
1. A suspended matter blocking fence for an ocean power system, comprising: wherein the ocean power system has turbine structures 20 in a barrage 10 to divide a sea side 14 and a lake side 12 and sluice structures 30 at one side of the turbine structures 20, a lake-side suspended matter blocking barrier 100 installed at the lake side 12 to prevent the suspended matters from flowing from the lake side 12 into the turbine structures 20 and sluice structures 30; and a sea-side suspended matter blocking barrier 200 installed at the sea side 14 to prevent the suspended matters from flowing from the sea side 14 into the turbine structures 20 and sluice structures 30.
2. A suspended matter blocking fence for an ocean power system, comprising: wherein the ocean power system has turbine structures 20 in a barrage 10 to divide a sea side 14 and a lake side 12 and sluice structures 30 at one side of the turbine structures 20, a lake-side suspended matter blocking barrier 100 installed at the lake side 12 to prevent the suspended matters from flowing from the lake side 12 into the turbine structures 20 and sluice structures 30; and a sea-side suspended matter blocking barrier 200 installed at the sea side 14 to prevent the suspended matters from flowing from the sea side 14 into the turbine structures 20.
3. The suspended matter blocking fence for an ocean power system according to claims 1 or 2, wherein the lake-side suspended matter blocking barrier 100 and the sea-side suspended matter blocking barrier 200, further comprising: a blocking board 102 having a predetermined width and length; floating bodies 104, which are installed in fixed intervals along the longitudinal direction on the blocking board 102, and float the blocking board 102 on the water surface with buoyancy; a net 106, which is hung downward from the blocking board 102; a fixing means to fix the blocking board 102 in the seabed; and a connection means to connect a plurality of blocking boards 102 in the longitudinal direction.
4. The suspended matter blocking fence for an ocean power system according to claim 3, wherein the fixing means consists of ropes or wires to fix the blocking board 102 in the seabed, and the connection means consists of connection hooks 100 provided at both ends of the blocking board 102.
PCT/KR2008/002415 2008-04-04 2008-04-29 Suspended matter blocking fence for an ocean power system Ceased WO2009123375A1 (en)

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KR20080031593 2008-04-04

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CN108360472A (en) * 2018-04-12 2018-08-03 福建省水利水电勘测设计研究院 Sluice " L " type trash rack pier and its " zigzag " arrangement
CN114000405A (en) * 2021-11-08 2022-02-01 嵊泗风景旅游投资有限公司 A kind of safe walkway for sea walking and installation method thereof

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