KR20120111359A - Tidal stream power turbine for vertical axis - Google Patents

Tidal stream power turbine for vertical axis Download PDF

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Publication number
KR20120111359A
KR20120111359A KR1020110029785A KR20110029785A KR20120111359A KR 20120111359 A KR20120111359 A KR 20120111359A KR 1020110029785 A KR1020110029785 A KR 1020110029785A KR 20110029785 A KR20110029785 A KR 20110029785A KR 20120111359 A KR20120111359 A KR 20120111359A
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South Korea
Prior art keywords
power generation
reinforcing member
turbine
vertical turbine
tidal
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KR1020110029785A
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Korean (ko)
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KR101290292B1 (en
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현범수
조대승
배재한
한준선
이대형
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한국해양대학교 산학협력단
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Priority to KR1020110029785A priority Critical patent/KR101290292B1/en
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    • 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
    • F03B13/264—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 using the horizontal flow of water resulting from tide movement
    • 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
    • F03B11/04—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 diminishing cavitation or vibration, e.g. balancing
    • 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
    • F05B2220/00—Application
    • F05B2220/30—Application in turbines
    • F05B2220/32—Application in turbines in water turbines
    • 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
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • 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
    • 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Abstract

PURPOSE: A vertical turbine for tidal current power generation is provided to reduce vibration and noise by a reinforcing member which connects a plurality of blades. CONSTITUTION: A vertical turbine with low vibration for tidal current power generation comprises a rotary shaft(10), a support member(20), a plurality of blades(30), and a ring-shaped reinforcing member(40). One end of the support member is connected to the rotary shaft. The plurality of blades is connected to the other end of the support member. The reinforcing member connects the blades.

Description

조류 발전용 수직형 터빈{tidal stream power turbine for vertical axis}Tidal stream power turbine for vertical axis

본 발명은 조류 발전용 수직형 터빈에 관한 것으로서, 신재생에너지 기술 중 하나인 조류 발전에서 조류의 운동에너지를 회전에너지로 변환하기 위하여 이용되는 수직형 터빈에 관한 것이다.The present invention relates to a vertical turbine for tidal power generation, and relates to a vertical turbine used to convert kinetic energy of tidal current to rotational energy in tidal power generation, one of the renewable energy technologies.

산업 발달로 인한 석유 자원의 고갈로 신재생에너지에 관한 관심이 지속적으로 증가되고 있으며, 그 중에서 조류 발전은 환경 오염이 없는 청정에너지로 우리나라에서도 서해안을 중심으로 그 개발 가능성을 검토하고 있다.Due to the depletion of petroleum resources due to industrial development, interest in renewable energy is continuously increasing. Among them, tidal power generation is clean energy without environmental pollution.

이러한 조류 발전 시스템은 조류의 운동에너지를 회전에너지로 변환하는 터빈, 터빈이 변환시킨 회전에너지를 전기에너지로 변환시키는 발전기, 전체 구조물이 받게 되는 하중을 지지하는 지지구조물로 구성된다.The tidal power generation system is composed of a turbine for converting the kinetic energy of the tidal current into rotational energy, a generator for converting the rotational energy converted by the turbine into electrical energy, and a support structure for supporting the load that the entire structure receives.

이중에서 상기 터빈은 조류 발전의 효율을 결정짓는 가장 핵심이 되는 구성요소이며, 일반적으로 회전축과 조류의 흐름과 대비하여 수평형 터빈과 수직형 터빈으로 구분되고, 수직형 터빈은 유지보수가 용이하며, 변화하는 조류의 방향과 무관하게 일정한 방향으로 회전하는 장점이 있다.Among them, the turbine is the most important component that determines the efficiency of tidal power generation. In general, the turbine is divided into a horizontal turbine and a vertical turbine in contrast to the rotational axis and the flow of tidal current, and the vertical turbine is easy to maintain and However, it has the advantage of rotating in a constant direction irrespective of the changing tidal direction.

도 1은 종래의 조류 발전용 수직형 터빈을 도시하는 사시도이다.1 is a perspective view showing a conventional vertical turbine for tidal power generation.

도 1에 도시된 바와 같이 조류 발전용 수직형 터빈은 회전축(10)과 상기 회전축(10)에 일단이 결합되는 지지 부재(20)와, 상기 지지 부재(20)의 타단에 결합되는 다수 개의 블레이드(30)로 이루어진다.As shown in FIG. 1, a vertical turbine for tidal power generation includes a support member 20 having one end coupled to a rotating shaft 10 and the rotation shaft 10, and a plurality of blades coupled to the other end of the support member 20. It consists of 30.

이러한 종래의 조류 발전용 수직형 터빈은 수평형 터빈에 비해 효율이 떨어지고, 조류의 흐름과 수직으로 블레이드가 설치되기 때문에 블레이드에 하중이 균일하게 분포되지 못하여 진동과 소음이 발생하게 되고, 회전운동의 축이 되는 회전축이 길어짐에 따라서 구조적으로 불안정하게 된다.The conventional vertical turbine for tidal power generation is less efficient than the horizontal turbine, and because the blade is installed perpendicular to the flow of the tidal flow, the load is not evenly distributed on the blade, causing vibration and noise, As the axis of rotation becomes longer, it becomes structurally unstable.

또한, 이러한 소음과 진동으로 인하여 설치 지역의 해양 생물들의 서식에 악영향을 미치게 되는 문제점이 있다.
In addition, such noise and vibration has a problem that adversely affects the habitat of marine life in the installation area.

본 발명의 목적은 구조적 안정성과 내구성을 증가시키면서도 진동과 소음을 감소시킬 수 있는 조류 발전용 수직형 터빈을 제공하는 데 있다.
It is an object of the present invention to provide a vertical turbine for tidal power generation that can reduce vibration and noise while increasing structural stability and durability.

본 발명에 따른 조류 발전용 수직형 터빈은 회전축과, 상기 회전축에 일단이 결합되는 지지 부재와, 상기 지지 부재의 타단에 결합되는 다수 개의 블레이드로 이루어지는 조류 발전에 이용되는 수직형 터빈에 있어서, 상기 블레이드를 연결하는 환 형상의 보강 부재가 형성되는 것을 특징으로 한다.In the vertical turbine for tidal power generation according to the present invention is a vertical turbine used for tidal power generation consisting of a rotating shaft, a supporting member having one end coupled to the rotating shaft, and a plurality of blades coupled to the other end of the supporting member. An annular reinforcing member for connecting the blade is formed.

여기서, 상기 보강 부재는 상기 블레이드 전체 길이의 0.4 내지 0.6 부위에 설치되는 것을 특징으로 한다.Here, the reinforcing member is characterized in that it is installed in 0.4 to 0.6 of the entire length of the blade.

또한, 상기 보강 부재의 설치로 인하여 고유 진동수 변화가 1Hz이내인 것을 특징으로 한다.In addition, due to the installation of the reinforcing member is characterized in that the natural frequency change is within 1Hz.

마지막으로, 상기 보강 부재의 두께는 블레이드 전체 길이의 1~7%이내인 것을 특징으로 한다.
Finally, the thickness of the reinforcing member is characterized in that less than 1 ~ 7% of the total length of the blade.

본 발명에 따른 다수 개의 블레이드를 연결하는 보강 부재를 통해서 소음과 진동 발생을 감소시키고, 터빈의 안정성과 내구성을 증가시킬 수 있는 장점이 있다.Through the reinforcing member connecting the plurality of blades according to the present invention there is an advantage that can reduce the generation of noise and vibration, and increase the stability and durability of the turbine.

또한, 상기 소음과 진동 발생을 감소시켜서 조류 발전 시설에 설치되는 지역의 해상 생물을 서식에 영향이 없는 조류 발전이 가능하다는 장점이 있다.
In addition, there is an advantage that the generation of algae without affecting the habitat of marine organisms in the area installed in the algae power generation facilities by reducing the noise and vibration generation.

도 1은 종래의 조류 발전용 수직형 터빈을 도시하는 사시도.
도 2는 본 발명의 바람직한 일실시예에 따른 조류 발전용 수직형 터빈을 도시하는 사시도.
도 3은 도 2의 A-A'부의 단면도.
도 4는 도 1에 도시된 종래의 조류 발전용 수직형 터빈의 실험예시도.
도 5는 본 발명의 바람직한 일실시예에 따른 조류 발전용 수직형 터빈의 실험예시도.1 is a perspective view showing a conventional vertical turbine for tidal power generation.
Figure 2 is a perspective view showing a vertical turbine for tidal power generation according to an embodiment of the present invention.
3 is a cross-sectional view taken along the line AA ′ of FIG. 2;
Figure 4 is an experimental example of a conventional vertical turbine for tidal power generation shown in FIG.
Figure 5 is an experimental example of a vertical turbine for tidal power generation according to an embodiment of the present invention.

이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 일 실시 예를 상세하게 설명하고자 한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

도 2는 본 발명의 바람직한 일실시예에 따른 조류 발전용 수직형 터빈을 도시하는 사시도이다.Figure 2 is a perspective view showing a vertical turbine for tidal power generation according to an embodiment of the present invention.

도 2에 도시된 바와 같이 본 발명에 따른 조류 발전용 수직형 터빈은 회전에너지를 발전기로 전달하는 회전축(10)과, 상기 회전축(10)에 일단이 결합되는 지지 부재(20)와, 상기 지지 부재의 타단에 결합되는 다수 개의 블레이드(30)가 포함되는 것은 도 1에서 살펴본 조류 발전에 이용되는 수직형 터빈과 동일하다.As shown in FIG. 2, the vertical turbine for tidal power generation according to the present invention includes a rotary shaft 10 for transmitting rotational energy to a generator, a support member 20 having one end coupled to the rotary shaft 10, and the support. The inclusion of a plurality of blades 30 coupled to the other end of the member is the same as the vertical turbine used for tidal power generation as discussed in FIG.

본 발명에 따른 조류 발전용 수직형 터빈의 주요 특징은 상기 블레이드(30)를 연결하는 환 형상의 보강 부재(40)가 설치된다는 점이다.The main feature of the vertical turbine for tidal power generation according to the present invention is that the annular reinforcement member 40 connecting the blade 30 is installed.

상기 보강 부재(40)의 설치는 상기 블레이드(30)와 용접을 통해서 단단하게 체결되거나, 볼팅 결합 등을 통해서 체결될 수도 있다.Installation of the reinforcing member 40 may be tightly fastened by welding with the blade 30, or may be fastened by bolting coupling or the like.

상기 보강 부재(40)는 상기 블레이드(30)이 수직으로 결합되며, 상기 보강 부재(40)는 설치 위치(l)는 상기 블레이드 전체 길이(L)의 0.4 내지 0.6 부위에 설치되는 것이 바람직하며, 종래의 터빈에서 이 부분에서 가장 크게 변형이 발생되기 때문이다.The reinforcing member 40 is the blade 30 is vertically coupled, the reinforcing member 40 is preferably installed in the installation position (l) of 0.4 to 0.6 of the total length (L) of the blade, This is because the deformation is the greatest in this part of the conventional turbine.

도 3은 도 2의 A-A'부의 단면도이다.3 is a cross-sectional view taken along the line AA ′ of FIG. 2.

보강 부재의 단면은 도 3의 (a)와 같이 평판 양측에 경사부를 가지는 육각형 형태이거나, 도 3의 (b)에 도시된 바와 같이 타원 형태로 제작되는 것이 바람직하며, 보강 부재의 두께(t)는 블레이드 전체 길이의 1~7%이내인 것을 바람직하다.The cross section of the reinforcing member is preferably in the form of a hexagon having inclined portions on both sides of the flat plate as shown in (a) of FIG. 3, or is formed in an ellipse shape as shown in (b) of FIG. Is preferably within 1 to 7% of the total length of the blade.

상기 보강 부재의 두께를 블레이드 전체 길이의 1% 미만으로 할 경우 보강 부재의 강도상에 문제가 발생하게 되며, 7%이상의 두께가 되는 경우 보강 부재에 의한 저항으로 인하여 터빈 전체의 효율이 감소하게 되는 문제점이 있다.When the thickness of the reinforcing member is less than 1% of the total length of the blade, a problem occurs in the strength of the reinforcing member. When the thickness of the reinforcing member is 7% or more, the efficiency of the entire turbine is reduced due to the resistance of the reinforcing member. There is this.

여기서, 보강 부재를 설치하더라도 고유 진동수의 변화가 크게 되면 종래의 설비를 이용하기 힘들고 새로운 설계 과정을 거쳐야되는 문제점이 발생될 수 있다.Here, even if the reinforcing member is installed, if the change of the natural frequency is large, it may be difficult to use the conventional equipment and a problem of having to go through a new design process may occur.

따라서, 보강 부재의 설치로 인하여 고유 진동수 변화가 1Hz이내인 것을 바람직하다.Therefore, it is preferable that the natural frequency change is within 1 Hz due to the installation of the reinforcing member.

도 4는 도 1에 도시된 종래의 조류 발전용 수직형 터빈의 실험예시도이고, 도 5는 본 발명의 바람직한 일실시예에 따른 조류 발전용 수직형 터빈의 실험예시도이다.Figure 4 is an experimental view of the conventional vertical turbine for tidal power generation shown in Figure 1, Figure 5 is an experimental view of a vertical turbine for tidal power generation according to a preferred embodiment of the present invention.

도 4의 (a) 및 도 5의 (a)는 수심 방향의 진동에 대한 고유 진동수이며, 도 4의 (b) 및 도 5의 (b)는 수심 방향축 중심으로 회전에 대한 고유 진동수이다.4 (a) and 5 (a) are natural frequencies for vibrations in the depth direction, and FIGS. 4 (b) and 5 (b) are natural frequencies for rotation about the depth axis.

수심 방향의 진동에 대한 고유 진동수에 대하여 보강 부재가 설치되지 않은 종래의 경우에는 13.99Hz, 13.93Hz, 13.96Hz의 고유 진동수이며, 보강 부재가 설치된 경우에는 13.01Hz, 14.22Hz, 14.23Hz로 변화되어 동일 모드에서 1Hz 이하로 변화된 것을 확인할 수 있다.In the conventional case where the reinforcing member is not installed for the natural frequency of vibration in the depth direction, the natural frequency of 13.99 Hz, 13.93 Hz, and 13.96 Hz is changed. In the same mode, it can be seen that the change is less than 1Hz.

수심 반향축을 중심으로 회전에 대한 고유 진동수에 대해서도 28.09Hz에서 26.72Hz로 2Hz 이하로 변화된 것을 확인할 수 있다.It can be seen that the natural frequency of rotation about the depth echo axis has also changed from 28.09 Hz to 26.72 Hz to less than 2 Hz.

따라서, 보강 부재의 설치로 인하여 터빈 전체의 고유 진동수의 변화를 최소화하여 설계상의 어려움을 해결할 수 있게 된다.Therefore, due to the installation of the reinforcing member it is possible to minimize the change in the natural frequency of the entire turbine to solve the design difficulties.

하중에 의한
구조물의 변화량(mm)By load
Change amount of structure (mm) 변화량
비교[%]Change
compare[%] Power Coefficient
[Cp]Power coefficient
[C p ] Cp difference
[%]C p difference
[%] 기존existing 48.748.7 -- 0.34050.3405 -- 본원 발명Invention 25.425.4 91.7%91.7% 0.33750.3375 -0.8%-0.8%

표1을 참고하면, 기존 터빈에 비하여 본원 발명에 따른 터빈은 구조물의 변화량이 대폭감소하지만, 동력 계수(Power Coefficient)는 0.8%감소한 것을 확인할 수 있다.Referring to Table 1, it can be seen that the turbine according to the present invention compared to the existing turbine, but the amount of change in the structure is significantly reduced, but the power coefficient (Power Coefficient) is reduced by 0.8%.

이상과 같이 본 발명은 블레이드를 연결하는 환형의 보강 부재가 설치된 조류 발전용 수직형 터빈을 제공하는 것을 주요한 기술적 사상으로 하고 있으며, 도면을 참고하여 상술한 실시 예는 단지 하나의 실시 예에 불과하므로 본 발명의 진정한 범위는 특허청구범위에 의해 결정되어야 한다.
As described above, the present invention has as its main technical idea to provide a vertical turbine for tidal power generation in which an annular reinforcing member connecting a blade is installed, and the embodiment described above with reference to the drawings is only one embodiment. The true scope of the invention should be determined by the claims.

10: 회전축
20: 지지 부재
30: 블레이드
40: 보강 부재10: axis of rotation
20: support member
30: blade
40: reinforcing member

Claims (4)

회전축과, 상기 회전축에 일단이 결합되는 지지 부재와, 상기 지지 부재의 타단에 결합되는 다수 개의 블레이드로 이루어지는 조류 발전에 이용되는 수직형 터빈에 있어서,
상기 블레이드를 연결하는 환 형상의 보강 부재가 형성되는 것을 특징으로 하는 조류 발전용 수직형 터빈.
In the vertical turbine used for tidal power generation consisting of a rotating shaft, a supporting member having one end coupled to the rotating shaft, and a plurality of blades coupled to the other end of the supporting member,
Vertical turbine for tidal power generation, characterized in that the annular reinforcement member for connecting the blade is formed.
제 1 항에 있어서,
상기 보강 부재는,
상기 블레이드 전체 길이의 0.4 내지 0.6 부위에 설치되는 것을 특징으로 하는 조류 발전용 수직형 터빈.
The method of claim 1,
The reinforcing member,
Vertical turbine for tidal current generation, characterized in that installed in the 0.4 to 0.6 area of the blade full length.
제 1 항에 있어서,
상기 보강 부재의 설치로 인하여 고유 진동수 변화가 1Hz이내인 것을 특징으로 하는 조류 발전용 수직형 터빈.
The method of claim 1,
Vertical turbine for tidal current power generation, characterized in that due to the installation of the reinforcing member is a natural frequency change within 1Hz.
제 1 항에 있어서,
상기 보강 부재의 두께는,
블레이드 전체 길이의 1~7%이내인 것을 특징으로 하는 조류 발전용 수직형 터빈.
The method of claim 1,
The thickness of the reinforcing member,
Vertical turbine for tidal power, characterized in that less than 1 to 7% of the total length of the blade.
KR1020110029785A 2011-03-31 2011-03-31 tidal stream power turbine for vertical axis KR101290292B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103535305A (en) * 2013-10-30 2014-01-29 浙江海洋学院 Novel artificial fish reef
ES2536116A1 (en) * 2013-11-19 2015-05-20 Manuel RAÑA FEIJOO Rotary flow-through mechanism to take advantage of the kinetic energy of a water stream (Machine-translation by Google Translate, not legally binding)
KR101642259B1 (en) * 2015-07-31 2016-07-25 충남대학교 산학협력단 High Efficiency Water Turbine with Variable Dual Blades

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200340631Y1 (en) * 2003-11-04 2004-02-11 현대중공업 주식회사 Circle rim type cylindric vertical water mill
US20090261596A1 (en) * 2008-04-17 2009-10-22 Windenergy Co., Ltd. Wind power generator
KR20090110762A (en) * 2008-04-18 2009-10-22 곽양진 Water flow generator
KR20110127926A (en) * 2010-05-20 2011-11-28 윤필 Wind wheel of wind force generator of electric current

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103535305A (en) * 2013-10-30 2014-01-29 浙江海洋学院 Novel artificial fish reef
ES2536116A1 (en) * 2013-11-19 2015-05-20 Manuel RAÑA FEIJOO Rotary flow-through mechanism to take advantage of the kinetic energy of a water stream (Machine-translation by Google Translate, not legally binding)
KR101642259B1 (en) * 2015-07-31 2016-07-25 충남대학교 산학협력단 High Efficiency Water Turbine with Variable Dual Blades

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