WO2017181433A1 - Générateur à courant de marée et son capot de guidage de courant - Google Patents

Générateur à courant de marée et son capot de guidage de courant Download PDF

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Publication number
WO2017181433A1
WO2017181433A1 PCT/CN2016/080084 CN2016080084W WO2017181433A1 WO 2017181433 A1 WO2017181433 A1 WO 2017181433A1 CN 2016080084 W CN2016080084 W CN 2016080084W WO 2017181433 A1 WO2017181433 A1 WO 2017181433A1
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WIPO (PCT)
Prior art keywords
distance
generator
section
horizontal
point
Prior art date
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Ceased
Application number
PCT/CN2016/080084
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English (en)
Chinese (zh)
Inventor
林东
徐虔诚
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Hangzhou Lindong New Energy Technology Inc
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Hangzhou Lindong New Energy Technology Inc
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Priority to PCT/CN2016/080084 priority Critical patent/WO2017181433A1/fr
Publication of WO2017181433A1 publication Critical patent/WO2017181433A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • F03B15/00—Controlling
    • 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

Definitions

  • Ocean energy (including tidal energy, tidal energy, wave energy, ocean current energy) refers to the energy of seawater flow. As a renewable energy source, it has abundant reserves and wide distribution, and has excellent development prospects and value.
  • the way of utilizing ocean energy is mainly power generation. Its working principle is similar to that of wind power generation, that is, the energy of seawater is converted into electric energy through an energy conversion device. Specifically, first, seawater impacts the turbine, which converts the energy of the water stream into rotational mechanical energy, and then the turbine drives the generator to generate electricity through the mechanical transmission system, and finally converts it into electrical energy.
  • a current tidal energy power generation device draws on the design of a wind energy generator, and adjusts the load of the power generation device by means of pitching.
  • the blade angle of attack is reduced by the adjusting device; when the water flow speed is small, the blade angle of attack is increased by the adjusting device.
  • this design has a lot of drawbacks.
  • horizontal-axis hydro-generators are used in water and are subject to much greater resistance than wind-power generators.
  • the rotating mechanism is entirely located in the water, and to achieve the rotation of the blade angle, it is necessary to accurately design the tightness between the components of the blade.
  • connection If the connection is very tight and the friction is too large, it is difficult to adjust the angle of the water surface of the blade, which causes the adjustment device to fail to perform the adjustment effect. In this case, the power generation device cannot improve the efficiency when the water flow is too small, and the generator cannot be truly protected when the water flow is too large. If the connection is too loose, the friction is too small, although it can be easily adjusted, there is a serious problem of loss of sealing. In this way, the water flow will be poured into the interior of the hydro-generator, causing damage to the entire hydro-generator, the maintenance rate is greatly improved, and the cost is greatly increased. Moreover, the turbine generator has several blades to install several rotating mechanisms and control mechanisms, and its cost and technical difficulty increase sharply.
  • the present invention provides a tidal energy power generating apparatus including a frame, at least one rotating shaft, at least one driving unit, at least one horizontal-axis hydro-generator, and at least one shroud.
  • the rotating shaft is rotatably disposed on the frame, the rotating shaft has an axis, and the direction of the axis is perpendicular to the horizontal plane.
  • the drive unit is located on the water surface and is connected to the rotating shaft to drive the rotating shaft.
  • One end point is the farthest point, and the distance between the farth point to the center point is a second distance, and the first distance is greater than the second distance.
  • the intermediate portion faces the two water guiding portions respectively, and the cross section of the two water guiding portions is circular.
  • the plane of the cross section is perpendicular to the horizontal plane and perpendicular to the water flow direction, and the radius of the cross section is slightly larger than the shortest distance between the most distal point and the central axis. .
  • the distance between any point on the inner surface of the intermediate portion to the center point is equal.
  • the distance between any point on the inner surface of the intermediate portion to the center point is slightly greater than the second distance.
  • a cross section of each of the water guiding portions away from the intermediate portion has a rectangular cross section
  • a cross section of each of the water guiding portions facing the intermediate portion has a circular cross section, a circular cross section and a rectangular cross section. Both are perpendicular to the horizontal plane and perpendicular to the direction of the water flow, and the area of the circular cross section is smaller than the area of the rectangular cross section.
  • At least two horizontal axis hydro-generators are mounted on a mounting shaft and aligned in a direction perpendicular to the horizontal plane within the same inner frame.
  • the number of inner frames is at least three.
  • the present invention also provides a shroud for use in a tidal energy power generating device, the tidal current power generating device comprising at least one horizontal axis hydro-generator and at least one rotating shaft, and the horizontal shaft hydroelectric generating
  • the machine is fixed to the rotating shaft, the rotating shaft has an axis, the direction of the axis is perpendicular to the horizontal plane, the horizontal axis hydro-generator comprises a blade and a generator, the horizontal axis hydro-generator has a central axis, and the direction of the central axis is parallel to the horizontal plane, wherein
  • the shroud includes two water guiding portions and an intermediate portion, and the intermediate portion is located between the two water guiding portions.
  • the intersection of the axis of the shaft and the central axis of the horizontal axis hydro-generator is the center point, and the distance between any point on the inner surface of the middle portion to the center point is the first distance, and the end point of the blade farthest from the center point
  • the farthest point, the distance between the farthest point and the center point is a second distance, the first distance is greater than the second distance
  • the cross section of the middle portion facing the two water guiding portions respectively is circular, the cross section
  • the plane is perpendicular to the horizontal plane and perpendicular to the direction of the water flow, and the radius of the cross section is slightly larger than the distance between the most distal point and the central axis.
  • the shroud is of an asymmetrical structure.
  • the tidal current power generating device concentrates the water flow to the horizontal axis hydro-generator by providing a shroud, so that the blades of the horizontal-axis hydro-generator are more stressed and rotate faster.
  • Improve power generation efficiency By setting the rotating shaft, the load of the generator is innovatively adjusted by changing the orientation of the entire horizontal axis generator instead of changing the water angle of the blade separately, so that the generator can always ensure normal power generation within a safe load regardless of the water flow speed. , greatly improving the efficiency of power generation.
  • the blades of the horizontal axis hydro-generator can always face the water flow regardless of the high tide or the low tide, thereby ensuring the maximum power generation.
  • the shroud of the present invention limits the flow of water from flowing directly out of the gap between the shroud and the rotating area of the blade to ensure a higher throughput.
  • the present invention provides a detachable inner frame and an outer frame, so that the power generating device can be modularly assembled and replaced on the water surface, greatly reducing maintenance and installation costs, and overcoming the commercialization and large-scale of the conventional tidal energy generating device. The problem.
  • the shroud By setting the shroud to an asymmetrical structure, it is ensured that all currents can be correctly directed to the hydro-generator by the shroud, whether it is high or low tide, thereby maximizing the use of water flow for power generation and power generation. effectiveness.
  • FIG. 2 is a top plan view of a tidal current power generating apparatus according to a first embodiment of the present invention.
  • FIG 3 is a perspective view of a shroud and a horizontal axis hydro-generator provided in accordance with a first embodiment of the present invention.
  • Figure 5 is a top cross-sectional view of a shroud and a horizontal axis hydro-generator provided in accordance with a first embodiment of the present invention.
  • Figure 6 is a schematic view of Figure 5 after removal of the shroud.
  • Figure 7 is a front elevational view of a shroud and a horizontal axis hydro-generator provided in accordance with a first embodiment of the present invention.
  • Figure 8 is a schematic illustration of a shroud provided in accordance with a second embodiment of the present invention.
  • the tidal current power generating apparatus provided in the first embodiment of the present invention includes a frame, at least one horizontal-axis hydro-generator 3, at least one rotating shaft 4, at least one shroud 5, and a driving unit 6.
  • the shroud 5 is provided corresponding to the horizontal axis hydro-generator 3.
  • the reduced water flow resistance structure 12 is located at the uppermost and lowermost sides of the outer frame 1.
  • the cross section of the reduced water flow resistance structure 12 is a triangle.
  • the present invention does not limit the specific shape and structure of the water flow resistance structure 12.
  • the reduced water flow resistance structure can be fabricated as a streamlined type.
  • the inner frame 2 can be provided with a hook (not shown), and the outer frame 1 can be provided with a card slot (not shown).
  • the inner frame 2 is embedded by the mutual engagement of the hook and the card slot. Go inside the outer frame 1.
  • the present invention does not limit the manner of fixing between the inner frame 2 and the outer frame 1.
  • the present invention is not limited to the specific number of the inner frames 2.
  • the number of inner frames 2 is greater than or equal to three. In practical applications, the number of inner frames 2 can be as many as 12 or 14. As shown in FIG.
  • the number of the inner frames 2 is equal to the number of the rotating shafts 4, and the number of the horizontal-axis hydro-generators 3 is larger than the number of the rotating shafts 4.
  • the present invention is not limited thereto.
  • one of the built-in modules 100 may have a plurality of rotating shafts 4 and each of the rotating shafts 4 may have more than two horizontal-axis hydro-generators 3.
  • Each of the two horizontal-axis hydro-generators 3 mounted on the same rotating shaft 4 rotates in synchronization.
  • the drive unit 6 is coupled to the rotating shaft 4 to drive the rotating shaft 4 to rotate. Since the flow direction of the high tide and the low tide is opposite, no matter which direction the water flow flows in, the blade 31 of the horizontal axis hydro-generator 3 is always directed toward the water flow by the rotation of the rotating shaft 4, thereby improving the utilization of the tidal current energy and improving the power generation efficiency.
  • the shroud 5 has two water guiding portions 51 and one intermediate portion 52.
  • the intermediate portion 52 is located between the two water guiding portions 51.
  • the intersection formed by the axis X1 of the rotating shaft 4 and the central axis X2 of the horizontal-axis hydro-generator 3 is the center point C.
  • the distance between any point on the inner surface 521 of the intermediate portion 52 (point 52a as shown in FIG. 5) to the center point C is the first distance S1
  • the end point of each of the blades 31 farthest from the center point C is the most
  • the distance between the far-end point E and the far-end point E to the center point C is the second distance S2, and the first distance S1 is greater than the second distance S2.
  • the first distance S1 is slightly larger than the second distance S2, that is, there is only a very small gap between the inner surface 521 of the intermediate portion 52 and the most distal point E of the blade 31, and this gap ensures the horizontal axis water wheel
  • the farthest point E of the blade 31 does not rub against the inner surface of the intermediate portion 52, while also ensuring that the shroud 5 gathers all the water flow as much as possible in the region where the blade 31 rotates. It is possible that the water flow is not allowed to pass directly through the shroud 5 from the gap without being pushed by the blade 31.
  • the cross section S of the intermediate portion 52 facing the two ends of the two water guiding portions 51, respectively is circular, the plane of the cross section S is perpendicular to the horizontal plane P and perpendicular to the water flow direction D, and the radius of the cross section S R is slightly larger than the shortest distance S3 between the most distal point E and the central axis X2 (i.e., a perpendicular from the farthest point E perpendicular to the central axis X2, the length of the perpendicular being the shortest distance S3).
  • the conventional minority horizontal axis hydro-generator 3 can be rotated, but in order to facilitate the rotation of the horizontal-axis hydro-generator 3, the prior art does not consider the optimal size of the shroud 5, but only considers the cross-section S.
  • the radius R is made larger than the second distance S2 between the most distal point E of the blade 31 to the center point C.
  • the existing shroud is cylindrical (that is, viewed from a plan view, the left and right sides of the middle portion of the shroud are linear), and since the second distance S2 is certainly greater than the shortest distance S3, this will inevitably lead to a cross section.
  • the shroud used in the existing tidal current power generating device has a circular cross section on the water-facing side. Since the existing frames are all rectangular, a gap is created between the circle and the rectangle during the installation process. If there is no obstacle in the gap, when the current impacts on the horizontal axis hydro-generator, a considerable part of the water will flow from the gap to the horizontal-axis hydro-generator, even hitting the back of the blade, greatly reducing the power generation.
  • FIG. 8 is a schematic illustration of a shroud provided in accordance with a second embodiment of the present invention.
  • the structure and function of the outer frame, the inner frame, the horizontal axis hydro-generator, the rotating shaft and the driving unit are as described in the first embodiment, and are not described herein again. The following only explains the differences.
  • each shroud has an asymmetrical structure. Specifically, each shroud also has two water guiding portions 51' and one intermediate portion 52'. Each of the water guiding portions 51' has a three-dimensional structure in which one end is rectangular and then transitions to the other end in a circular shape. However, the intermediate portion 52' is an asymmetrical structure. Specifically, one of the water guiding portions 51' has a first central axis A1, and the other water guiding portion 51' has a second central axis A2. The second central axis A2 and the first central axis A1 form an angle other than zero. .
  • the blades of the horizontal axis hydro-generator can always face the water flow regardless of the high tide or the low tide, thereby ensuring the maximum power generation.
  • the shroud of the present invention limits the flow of water from flowing directly out of the gap between the shroud and the rotating region of the blade to ensure high throughput.
  • At least three horizontal-axis hydro-generators are arranged in a direction perpendicular to the horizontal plane, and at least two horizontal-axis hydro-generators are arranged in a direction parallel to the horizontal plane, so that the hydro-generator realizes a matrix row Cloth, making full use of the horizontal and vertical tidal currents of the entire sea area, greatly improving power generation efficiency.
  • the cross-sectional area of the two ends is larger than the cross-sectional area of the intermediate portion, which has a better function of guiding and collecting, and increases the pressure against the blade. Greatly improve power generation efficiency.

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

Abstract

L'invention concerne un générateur à courant de marée et son capot de guidage de courant. Le générateur à courant de marée comprend un bâti, au moins un arbre rotatif (4), au moins une unité d'entraînement (6), au moins un hydrogénérateur à axe horizontal (3), et au moins un capot de guidage de courant (5). L'arbre rotatif (4) est disposé de manière rotative sur le bâti. L'unité d'entraînement (6) est disposée sur la surface de l'eau, et est reliée à l'arbre rotatif (4) pour entraîner l'arbre rotatif (4) en rotation. L'hydrogénérateur à axe horizontal (3) est fixé sur l'arbre rotatif (4). Le capot de guidage de courant (5) est fixé sur le bâti, et comprend deux parties de guidage d'eau (51) et une partie centrale (52). La partie centrale (52) est disposée entre les deux parties de guidage d'eau (51). Un axe (X1) de l'arbre rotatif (4) et un axe central (X2) de l'hydrogénérateur à axe horizontal (3) se croisent en un point central (C). La distance entre un point quelconque sur une surface interne (521) de la partie centrale (52) et le point central (C) est une première distance (S1). Un point d'extrémité d'une pale (31) de l'hydrogénérateur d'axe horizontal (3) le plus éloigné du point central (C) est un point d'extrémité le plus éloigné (E). La distance entre le point d'extrémité le plus éloigné (E) et le point central (C) est une seconde distance (S2). La première distance (S1) est supérieure à la seconde distance (S2). Des sections transversales (S) de la partie centrale (52) faisant face aux deux extrémités des deux parties de guidage d'eau (51) sont rondes, respectivement. Un rayon (R) des sections transversales (S) est légèrement supérieur à une distance entre le point d'extrémité le plus éloigné (E) et l'axe central (X2).
PCT/CN2016/080084 2016-04-22 2016-04-22 Générateur à courant de marée et son capot de guidage de courant Ceased WO2017181433A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112576437A (zh) * 2020-12-23 2021-03-30 南京高精船用设备有限公司 一种升降起翘式潮流能发电装置
CN115777596A (zh) * 2022-10-17 2023-03-14 清华大学 人工鱼礁和具有其的人工鱼礁的制造方法
CN118745963A (zh) * 2024-06-20 2024-10-08 哈尔滨工程大学三亚南海创新发展基地 一种固定式水平轴水流发电装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014076477A2 (fr) * 2012-11-13 2014-05-22 Sustainable Marine Energy Limited Ensemble turbine pouvant être entraînée par l'eau en mouvement
CN104074670A (zh) * 2013-03-25 2014-10-01 杭州林黄丁新能源研究院有限公司 模块化海洋能发电装置
CN204877775U (zh) * 2015-06-29 2015-12-16 浙江舟山联合动能新能源开发有限公司 潮流能发电装置
CN105484935A (zh) * 2014-06-30 2016-04-13 杭州林东新能源科技股份有限公司 模块化双向潮流能发电装置
CN205714570U (zh) * 2016-04-22 2016-11-23 杭州林东新能源科技股份有限公司 潮流能发电装置及其导流罩

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014076477A2 (fr) * 2012-11-13 2014-05-22 Sustainable Marine Energy Limited Ensemble turbine pouvant être entraînée par l'eau en mouvement
CN104074670A (zh) * 2013-03-25 2014-10-01 杭州林黄丁新能源研究院有限公司 模块化海洋能发电装置
CN105484935A (zh) * 2014-06-30 2016-04-13 杭州林东新能源科技股份有限公司 模块化双向潮流能发电装置
CN204877775U (zh) * 2015-06-29 2015-12-16 浙江舟山联合动能新能源开发有限公司 潮流能发电装置
CN205714570U (zh) * 2016-04-22 2016-11-23 杭州林东新能源科技股份有限公司 潮流能发电装置及其导流罩

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112576437A (zh) * 2020-12-23 2021-03-30 南京高精船用设备有限公司 一种升降起翘式潮流能发电装置
CN115777596A (zh) * 2022-10-17 2023-03-14 清华大学 人工鱼礁和具有其的人工鱼礁的制造方法
CN118745963A (zh) * 2024-06-20 2024-10-08 哈尔滨工程大学三亚南海创新发展基地 一种固定式水平轴水流发电装置

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