KR20000051351A - Tide generating method and plant - Google Patents

Tide generating method and plant Download PDF

Info

Publication number
KR20000051351A
KR20000051351A KR1019990001757A KR19990001757A KR20000051351A KR 20000051351 A KR20000051351 A KR 20000051351A KR 1019990001757 A KR1019990001757 A KR 1019990001757A KR 19990001757 A KR19990001757 A KR 19990001757A KR 20000051351 A KR20000051351 A KR 20000051351A
Authority
KR
South Korea
Prior art keywords
tank
fan
nozzle
generator
air
Prior art date
Application number
KR1019990001757A
Other languages
Korean (ko)
Inventor
이종대
Original Assignee
이종대
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 이종대 filed Critical 이종대
Priority to KR1019990001757A priority Critical patent/KR20000051351A/en
Publication of KR20000051351A publication Critical patent/KR20000051351A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12Adaptations 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
    • F03B13/14Adaptations 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 wave energy
    • F03B13/24Adaptations 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 wave energy to produce a flow of air, e.g. to drive an air turbine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12Adaptations 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
    • F03B13/14Adaptations 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 wave energy
    • F03B13/141Adaptations 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 wave energy with a static energy collector
    • F03B13/142Adaptations 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 wave energy with a static energy collector which creates an oscillating water column
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/30Energy from the sea, e.g. using wave energy or salinity gradient

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

PURPOSE: A method of and an apparatus for pneumatic generating utilizing range of tide are provided to achieve minimized environmental deterioration and maintenance fee while allowing the generating facility to be installed regardless of geography. CONSTITUTION: An apparatus comprises a tank(1) having at a lower portion thereof a hole(10) for introduction of sea water, nozzles(21, 22) for introducing or discharging air to or from a tank(1) according to a difference of level of sea introduced and discharged into and from the tank(1), a fan(3) installed in the vicinity of the nozzle(21, 22) and which rotates by the air flow passing through the nozzle device(2), and a generator(4) to which the rotating force of the fan(3) is transmitted so as to produce electricity, and a battery(5) for accumulating the electricity generated in the generator(4).

Description

조수간만의 차를 이용한 공압발전 방법 및 그 장치{Tide generating method and plant}Pneumatic power generation method and device therefor using tide between tides {Tide generating method and plant}

본 발명은 조수간만의 차를 이용한 공압발전 방법 및 그 장치에 관한 것으로서, 더욱 상세하게는 발전 설비의 설치로 인한 자연 환경의 파괴를 최소화하고 건설비용과 유지비용을 최소화시키며, 설치 지역 및 지형에 제약 없이 발전 설비를 설치시킬 수 있도록 하는 조수간만의 차를 이용한 공압발전 방법 및 그 장치에 관한 것이다.The present invention relates to a pneumatic power generation method and apparatus using the difference between tides, and more particularly, to minimize the destruction of the natural environment due to the installation of the power generation equipment, to minimize the construction cost and maintenance costs, and to the installation area and terrain The present invention relates to a pneumatic power generation method and apparatus using a difference between tides for allowing a power generation facility to be installed without restriction.

일반적으로 조수간만의 차를 이용하여 발전을 하는 조력발전의 경우 최초 설비 비용이 막대하게 요구되는 단점이 있다.In general, in the case of tidal power generation using the difference between tides, the initial installation cost is enormous.

또한 발전 설비의 설치 지역 및 지형 조건에 따라 발전 효율에 많은 차이가 있어 지역 및 지형에 많은 제약을 받게 되고, 설비의 거대화로 인하여 수중의 생태 환경을 파괴하는 정도가 매우 심각한 문제점이 있는 것이다.In addition, there are many differences in power generation efficiency depending on the installation region and the topography conditions of the power generation facilities, which is subject to a lot of restrictions on the region and topography, and the degree of destruction of the ecological environment of the water due to the large size of the installation is very serious problem.

본 발명은 전술한 문제점을 해결하기 위해 안출된 것으로서, 본 발명은 발전 설비의 설치 비용을 최소화시켜 전기 공급이 안돼는 낙도 등에서도 적은 비용으로 자가발전을 이룰 수 있게 함은 물론 자연 생태 환경의 파괴와 유지 보수비용을 최소화시키고, 지역 및 지형의 조건에 제약 없이 발전 설비를 설치시킬 수 있게 하는 조수간만의 차를 이용한 공압발전 방법 및 그 장치를 제공함에 그 목적이 있다.The present invention has been made to solve the above-described problems, the present invention is to minimize the installation cost of the power generation facilities to achieve self-power at low cost, such as islands that can not supply electricity, as well as destruction of the natural ecological environment It is an object of the present invention to provide a pneumatic power generation method and apparatus using only a tide between the tide to minimize maintenance costs and to install a power generation facility without restriction of local and terrain conditions.

본 발명은 상기와 같은 목적을 달성하기 위해서 다음과 같이 구성된다. 즉, 본 발명은 바닷물이 탱크의 내부로 유입되고 배출되는 해수면의 차이에 의해 탱크 내부의 공기가 배출되고 유입되는 공기의 흐름 에너지를 이용하여 팬을 회전 구동시키고 팬(fan)의 회전 구동력을 발전기에 연결시켜 전기를 발생시킬 수 있도록 구성시킨 것에 특징을 둔 것이다.The present invention is configured as follows to achieve the above object. That is, according to the present invention, the fan is rotated by using the flow energy of the air in which the air in the tank is discharged and introduced by the difference in the sea level where the seawater is introduced into the tank and discharged, and the rotational driving force of the fan is generated. It is characterized by being configured to generate electricity by connecting to.

도 1 은 본 발명에 따른 발전 장치를 도시한 단면도1 is a cross-sectional view showing a power generation device according to the invention

도 2 는 본 발명의 밀물시 작동 상태를 도시한 단면도2 is a cross-sectional view showing the operating state of the high tide of the present invention.

도 3 은 본 발명의 썰물시 작동 상태를 도시한 단면도3 is a cross-sectional view showing an operating state at low tide of the present invention.

도 4 는 본 발명의 요부인 팬과 노즐부를 확대 도시한 단면도4 is an enlarged cross-sectional view showing a fan and a nozzle unit, which are main parts of the present invention;

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

1. 탱크 2. 노즐장치1. Tank 2. Nozzle Unit

3. 팬 4. 발전기3. Fan 4. Generator

5. 축전지 6. 공기밸브5. Storage battery 6. Air valve

이하에서는 첨부 도면을 참조하여 본 발명의 바람직한 실시 예를 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부된 도면 도 1 은 본 발명에 따른 발전 장치를 도시한 단면도이고, 도 2 는 본 발명의 밀물시 작동 상태를 도시한 단면도이며, 도 3 은 본 발명의 썰물시 작동 상태를 도시한 단면도이고, 도 4 는 본 발명의 요부인 팬과 노즐부를 확대 도시한 단면도이다.1 is a cross-sectional view showing a power generation apparatus according to the present invention, Figure 2 is a cross-sectional view showing the operating state of the tide of the present invention, Figure 3 is a cross-sectional view showing the operating state of the ebb tide of the present invention, 4 is an enlarged cross-sectional view of a fan and a nozzle unit, which are main parts of the present invention.

도 1 내지 도 4 에 도시된 바와 같이, 본 발명은 탱크(1)의 내부로 유입되고 배출되는 해수면의 높이 차에 의해 탱크(1)내의 공기를 배출시키고 유입시키는 노즐(2)장치와, 상기 노즐(2)을 통과하는 공기의 흐름에 의해 회전 구동하는 팬(3)과, 상기 팬의 회전력을 발전기(4)에 전달시켜 전기를 발생시킬 수 있게 한 것으로서, 이를 보다 구체적으로 설명하면 다음과 같다.As shown in Figures 1 to 4, the present invention is a nozzle (2) device for discharging and introducing air in the tank (1) by the difference in the height of the sea surface flowing into and out of the tank (1), The fan (3) that is rotationally driven by the flow of air passing through the nozzle (2) and the rotational force of the fan to the generator (4) to generate electricity, which will be described in more detail as follows. same.

하부에 바닷물이 유입되는 통공(10)을 구비하는 탱크(1)와, 상기 탱크(1)의 상부에 탱크 내로 유입되고 배출되는 해수면의 높이 차에 의해 탱크 내의 공기를 배출시키고 유입되게 하는 각각의 노즐(21)(22)(23)(24)과, 상기 노즐에 근접 설치되어 각 노즐 내를 유동하는 공기의 흐름에 의해 회전 구동하는 팬(3)와, 상기 팬(3)의 회전 구동력을 전달받아 전기를 발생시키는 발전기(4)와 발전기로부터 발생된 전기를 축적하는 축전지(5)로 구성되는 것으로서, 외기와 접하는 2개의 노즐 중에서 상부에 위치하는 노즐(22)에 밀폐판(26)을 힌지결합시키고, 탱크(1)의 내부에 위치하는 2개의 노즐 중에서 하부에 위치하는 노즐(24)에 밀폐판(25)을 힌지결합시켜 공기의 흐름 방향에 상관없이 팬(3)이 항상 일정한 방향으로 회전될 수 있게 한다.A tank 1 having a through-hole 10 through which seawater flows in the lower part, and each of the air in the tank is discharged and introduced into the tank by a difference in height of sea level flowing into and out of the tank at the upper part of the tank 1. Rotation driving force of the fan (3) and the fan (3) rotatably driven by the flow of air flowing in each nozzle in proximity to the nozzles (21, 22, 23, 24) It consists of a generator (4) for receiving electricity to generate electricity and a storage battery (5) for accumulating the electricity generated from the generator, the sealing plate 26 to the nozzle 22 located at the top of the two nozzles in contact with the outside air The hinge plate is hinged and the sealing plate 25 is hinged to the nozzle 24 positioned at the bottom of the two nozzles located inside the tank 1 so that the fan 3 is always in a constant direction regardless of the air flow direction. To be rotated.

그리고 상기 탱크(1)의 상부에는 탱크(1)의 공기실을 개방시키고 폐쇄시키는 공기밸브(6)를 설치시킨다.And the upper part of the tank 1 is provided with an air valve 6 for opening and closing the air chamber of the tank (1).

이와 같이 구성되는 본 발명은 밀물시 바닷물이 탱크(1)의 하부에 형성된 통공(10)을 통하여 탱크의 내부로 유입되면서 탱크(1)내의 해수면이 상승하게 되고, 이에 따라 수면 상부의 공기가 해수면에 의해 밀려올라 가면서 탱크 상부에 설치된 2개의 노즐 중에서 밀폐판이 설치되지 않은 상부 노즐(21)(22)을 통하여 탱크(1) 밖으로 배출된다.In the present invention configured as described above, when the tide is introduced into the tank through the through-hole 10 formed in the lower portion of the tank 1, the sea level in the tank 1 rises, and thus the air above the water surface It is discharged out of the tank 1 through the upper nozzles 21 and 22, which are not provided with a sealing plate, out of the two nozzles installed on the tank while being pushed up by.

이때 탱크(1) 내측의 하부 노즐(24)에 설치된 밀폐판(25)은 탱크 내의 공기압에 의해 밀폐된 상태를 이루고 외기와 접하는 상부 노즐(22)에 설치된 밀폐판(26)은 배출되는 공기압에 의해 개방된 상태를 이루게 되는 것이다.At this time, the sealing plate 25 installed in the lower nozzle 24 inside the tank 1 is sealed by air pressure in the tank, and the sealing plate 26 installed in the upper nozzle 22 in contact with the outside air is applied to the discharged air pressure. It will be opened by.

이에 따라 팬(3)이 공기의 흐름 에너지를 전달받아 회전 구동되고 팬(3)의 회전축(30)에 연결된 동력 전달 수단에 의해 회전력을 발전기(4)에 전달시켜 발전기에서 전기를 발생시키게 된다.Accordingly, the fan 3 is rotated by receiving the flow energy of the air and transmits the rotational force to the generator 4 by the power transmission means connected to the rotation shaft 30 of the fan 3 to generate electricity in the generator.

이때 발전기(4)에서 발생된 전기는 곧바로 가정의 가전제품에 연결시켜 사용할 수도 있게 발전기(4)에서 발생된 전기를 축전지(5)에 축척 시켰다가 사용할 수도 있는 것이다.At this time, the electricity generated by the generator 4 may be used by accumulating the electricity generated from the generator 4 in the storage battery 5 so that it may be directly connected to home appliances.

이와 같은 상태로 발전을 이루다가 바닷물이 만조를 이루는 시점에서 곧바로 썰물 동작이 진행됨에 따라 탱크(1)내로 유입되었던 바닷물이 통공(10)을 통하여 배출되면서 탱크(1)내의 해수면이 낮아지게 된다.As the power generation in such a state as the low tide is at high tide, the ebb flows immediately, the sea water introduced into the tank (1) is discharged through the through hole 10, the sea level in the tank (1) is lowered.

이에 수면 상승에 따라 탱크(1)내의 공기를 탱크 외부로 배출시키던 노즐(26)의 밀폐판(26)이 자중과 외풍에 의해 노즐(22)을 밀폐시키고, 외기와 접하는 하부 노즐(23)을 통하여 외부의 공기가 탱크(1)내로 유입되면서 탱크 내측 하부에 위치된 노즐(24)을 밀폐시켰던 밀폐판(25)이 공기압에 의해 회동되어 노즐(24)을 개방시킴에 따라 탱크(1)내로 외부의 공기가 유입되게 된다.Accordingly, the sealing plate 26 of the nozzle 26 which discharges the air in the tank 1 to the outside of the tank as the surface rises seals the nozzle 22 by its own weight and outside air, and opens the lower nozzle 23 in contact with the outside air. As the outside air flows into the tank 1, the sealing plate 25, which seals the nozzle 24 located in the lower portion of the inside of the tank, is rotated by air pressure to open the nozzle 24 into the tank 1. Outside air is introduced.

이에 의해 팬(3)은 회전되던 방향으로 계속하여 회전하면서 발전기(4)를 회전 구동시키고 발전기(4)는 지속적으로 발전을 하게 되는 것이다.As a result, the fan 3 rotates and drives the generator 4 while continuously rotating in the rotational direction, and the generator 4 continuously generates power.

또한 썰물시 노즐(24)를 통해 공기가 유입되어 내부의 해수가 배출되면서 발전하다가 밀물직전에 공기밸브(6)를 개방시켜 내부에 잔여 해수가 완전히 배출되면 공기밸브(6)를 폐쇄시켜서 밀물시 조수 간만의 차를 최대화하여 내부의 공기압을 높여 효과적인 발전이 계속되고 썰물 직전시에도 해수가 탱크(1)내로 최대로 유입되도록 공기밸브(6)를 개방시켜 해수가 최대로 유입되면 공기밸브(6)를 폐쇄시켜 썰물시 발전을 효과적으로 이룰 수 있는 것이다.In addition, during the ebb tide, the air is introduced through the nozzle 24, and the seawater inside is discharged to generate power, and the air valve 6 is opened immediately before the tide, and when the remaining sea water is completely discharged, the air valve 6 is closed to close the tide. Maximizes the difference between tides and increases the internal air pressure, so that effective power generation continues and the air valve 6 is opened so that seawater flows into the tank 1 to the maximum even before the low tide. ) Can be effectively achieved at low tide.

본 발명은 전술한 실시 예에 국한되지 않고 본 발명의 기술사상이 허용하는 범위 내에서 다양하게 변형하여 실시할 수가 있다.The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

이상에서와 같이 본 발명에 따르면 발전 설비의 설치 비용을 최소화시켜 전기 공급이 안돼는 낙도 등에서도 적은 비용으로 자가발전을 이룰 수 있게 함은 물론 자연 생태 환경의 파괴와 유지 보수비용을 최소화시키고, 지역 및 지형의 조건에 제약 없이 발전 설비를 설치시킬 수 있는 효과가 있는 것이다.As described above, according to the present invention, the installation cost of the power generation equipment can be minimized to enable self-power generation at a low cost even in remote islands where electricity cannot be supplied, as well as to minimize the destruction and maintenance costs of the natural ecological environment, There is an effect that can be installed without any restrictions on the topography conditions.

Claims (2)

탱크(1) 내부로 유입되고 배출되는 해수면의 높이 차에 의해 탱크(1)내의 공기를 배출시키고 유입시키는 노즐(2)장치와, 상기 노즐(2)을 통과하는 공기의 흐름에 의해 회전 구동하는 팬(3)과, 상기 팬의 회전력을 발전기(4)에 전달시켜 전기를 발생시키게 하는 것을 특징으로 하는 조수간만의 차를 이용한 공압발전 방법.A nozzle (2) device for discharging and introducing air in the tank (1) by the difference in height of the sea level flowing into and out of the tank (1), and rotationally driven by the flow of air passing through the nozzle (2) The pneumatic power generation method using the difference between the fan (3) and the tide between the fan and the rotational force of the fan to generate the electricity to the generator (4). 하부에 해수가 유입되는 통공(10)을 구비하는 탱크(1)와, 탱크(1)의 상부에 탱크 내로 유입되고 배출되는 해수면의 높이 차에 의해 탱크 내의 공기를 배출시키고 유입시키는 각각의 노즐(21)(22)과, 상기 노즐에 근접 설치되어 각 노즐 내를 유동하는 공기의 흐름에 의해 회전 구동하는 팬(3)과, 상기 팬(3)의 회전 구동력을 전달받아 전기를 발생시키는 발전기(4)와 발전기로부터 발생된 전기를 축적하는 축전지(5)로 구성되는 것을 특징으로 하는 조수간만의 차를 이용한 공압발전 장치.Each nozzle for discharging and injecting air in the tank by the height difference between the tank 1 having a through-hole 10 through which seawater flows in the lower part, and the sea surface level flowing into and out of the tank at the upper part of the tank 1 21, 22, a fan 3 installed close to the nozzle and driven to rotate by a flow of air flowing through each nozzle, and a generator configured to generate electricity by receiving the rotational driving force of the fan 3; 4) and a pneumatic power generator using a difference between tides between the storage battery (5) for accumulating electricity generated from the generator.
KR1019990001757A 1999-01-21 1999-01-21 Tide generating method and plant KR20000051351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019990001757A KR20000051351A (en) 1999-01-21 1999-01-21 Tide generating method and plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019990001757A KR20000051351A (en) 1999-01-21 1999-01-21 Tide generating method and plant

Publications (1)

Publication Number Publication Date
KR20000051351A true KR20000051351A (en) 2000-08-16

Family

ID=19571931

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019990001757A KR20000051351A (en) 1999-01-21 1999-01-21 Tide generating method and plant

Country Status (1)

Country Link
KR (1) KR20000051351A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101021593B1 (en) * 2008-08-21 2011-03-17 김경순 Tideland power generation
KR20150108554A (en) * 2014-03-18 2015-09-30 이지남 Apparatus for storing air pressure energy by using hydraulic pressure and generator using the same
CN116146424A (en) * 2023-04-23 2023-05-23 上海勘测设计研究院有限公司 Offshore wind power system based on compressed air energy storage and peak shaving control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101021593B1 (en) * 2008-08-21 2011-03-17 김경순 Tideland power generation
KR20150108554A (en) * 2014-03-18 2015-09-30 이지남 Apparatus for storing air pressure energy by using hydraulic pressure and generator using the same
CN116146424A (en) * 2023-04-23 2023-05-23 上海勘测设计研究院有限公司 Offshore wind power system based on compressed air energy storage and peak shaving control method

Similar Documents

Publication Publication Date Title
US7355298B2 (en) Syphon wave generator
KR101026196B1 (en) Tidal power generating apparatus
KR101039080B1 (en) Tanker type tidal power station device
US4941771A (en) Hydroelectric plant
KR101769080B1 (en) Generating system using depressurization apparatus in pipe
KR20000051351A (en) Tide generating method and plant
US7670101B2 (en) Portable hydro-generator
US20070108774A1 (en) Archimedes power generator
AU2018244665A1 (en) Centripetal turbine apparatus comprising nozzles inside sealed turbine
KR101088101B1 (en) Small hydropower generating system
US4192627A (en) Apparatus for generating electrical power
KR20020075097A (en) Method of tidal power generating and tidal power plant
JP2007024021A (en) Circulating hydraulic power generation machine and method of combining and assembling the machine
CN213039385U (en) Water wheel type power generation device
KR101000800B1 (en) Ocean Stream Generation Ascending and Descending Device
KR20100010833U (en) Generater using for water power and wind fovce
KR100380185B1 (en) Fan-driven oxygen supply system for water improvement
CN103696896A (en) Natural energy power multifunctional generation device
KR20040066989A (en) A water- power generation system
KR200389031Y1 (en) Power generating apparatus using tidewater
KR102375271B1 (en) Moving fluid increase of water generator device
JPH112176A (en) Generating device
JP3103364U (en) Seawater hydraulic power generator
RU2127373C1 (en) Hydroelectric power plant
CN2377367Y (en) Apparatus using sea current or rivers energy to generate electricity

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application