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WO2018151617A1 - Centrale électrique houlomotrice alvéolaire - Google Patents

Centrale électrique houlomotrice alvéolaire Download PDF

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Publication number
WO2018151617A1
WO2018151617A1 PCT/PT2018/050005 PT2018050005W WO2018151617A1 WO 2018151617 A1 WO2018151617 A1 WO 2018151617A1 PT 2018050005 W PT2018050005 W PT 2018050005W WO 2018151617 A1 WO2018151617 A1 WO 2018151617A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
alveoli
wave
power plant
alveolar
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/PT2018/050005
Other languages
English (en)
Inventor
Luiz Manuel Cantante DE MATOS
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
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 Individual filed Critical Individual
Publication of WO2018151617A1 publication Critical patent/WO2018151617A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F03B13/14—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 wave energy
    • F03B13/141—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 wave energy with a static energy collector
    • F03B13/142—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 wave energy with a static energy collector which creates an oscillating water column
    • 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
    • F05B2240/00—Components
    • F05B2240/40—Use of a multiplicity of similar components
    • 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
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/23—Geometry three-dimensional prismatic
    • 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
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/23—Geometry three-dimensional prismatic
    • F05B2250/231—Geometry three-dimensional prismatic cylindrical
    • 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
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/40—Organic materials
    • F05B2280/4007—Thermoplastics
    • 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

  • the present invention relates to a power plant for the production of electric energy from waves energy, the power plant being formed among further parts by one or more floating platforms made of vertical alveoli.
  • each vertical alveolus (2) comprising on its capped upper part at least one air inlet valve (5) and at least one air outlet valve (6), the valves (5, 6) respectively connected to one said suction air duct (9) and to one said compression air duct ( 8 ) ; wherein, in operation, the power plant is arranged such that the waves provide an oscillating water column inside each alveolus (2), movement of the oscillating water columns in the totality of the alveoli (2) alternately generates air suction in some alveoli and compression in the others, thus generating alternate opening and closing respectively of the air inlet valve (5) and the air outlet valve (6), thereby creating a continuous air flow passing through the turbogenerator group ( 7 ) .
  • each alveolus (2) from a floating platform (1) further comprises at least a further valve arranged such that in operation it closes for preventing water from entering into the compression air duct (8) when the water column reaches the upper part of the alveolus (2) .
  • a further valve arranged such that in operation it closes for preventing water from entering into the compression air duct (8) when the water column reaches the upper part of the alveolus (2) .
  • such valve that closes in operation for preventing water from entering into the compression air duct (8) is a buoy valve.
  • said floating platform (1) is provided with anchoring means.
  • said floating platform (1) is made of corrosion protected steel and expanded polystyrene and said air inlet valve (5) and air outlet valve (6) are made of polypropylene or stainless steel.
  • said compression (8) and suction (9) air ducts are made of high density polyethylene or stainless steel .
  • the present invention relates to a power plant for the production of electric energy from waves energy, the power plant being formed by one or more floating platforms (1) anchored to the seabed, the platforms (1) made of vertical alveoli (2) capped on top and opened below, connected by compression air ducts (8) and suction air ducts (9), in which ducts a continuous air flow circulates to be transmitted to turbogenerator groups (7) where electric energy is produced.
  • the advantage of the present invention over current wave energy pick-up techniques is that it captures the energy of the multiple oscillating water columns formed in the entire platform area, instead of it is captured at one single point or along one single line, resulting in higher efficiency and lower cost of electricity production.
  • Fig. 1 shows schematically a top view of the horizontal section by the flotation line of a floating platform (1) made of corrosion protected steel and expanded polystyrene or made of other materials having suitable density, mechanical strength and corrosion resistance, the platform (1) comprising alveoli (2) with prismatic shape, square section, vertical guideline, the alveoli being capped on its top and opened bellow.
  • the element indicated by (3) represents a vertical section which is shown in Fig. 2.
  • Fig. 2 schematically represents the vertical section (3) indicated in Fig. 1.
  • the elements represented by (1) and (2) are the same as those shown in Fig. 1.
  • the element (4) schematically represents the calculation wave at a given time, with the propagation direction indicated by the arrow (14); the calculation wave meaning the wave for which the power installed in the power plant is dimensioned .
  • the broken line (10) represents the platform floatation line where water is standing still.
  • the alveoli height is equal to the height of the calculation wave, with the floatation line (10) being half height of the alveoli.
  • the dashed element (11) represents the position of the calculation wave after an elementary time range has elapsed from the position indicated in (4) . By comparing these positions, one can see which are the alveoli where the water column rises and where it descends in that time range.
  • the arrows indicated by (12) and (13) respectively represents the up and down movements of the water columns.
  • the oscillating water column in each alveolus reverses the up and down direction in a time range corresponding to half wave period.
  • the elements (5) schematically represent the automatic air inlet valves in the alveoli, which valves (5) are actuated by the pressure difference, opening when there is vacuum pressure in the alveoli and closing when there is overpressure .
  • the elements (6) schematically represent automatic air outlet valves, which valves (6) are actuated by the pressure difference, opening when there is overpressure in the alveoli and closing ' when there is vacuum pressure.
  • the valves (5) and (6) are made of polypropylene, stainless steel or other suitable materials.
  • the element (7) represents a turbogenerator group.
  • the elements (8) represent the compression ducts for directing the air from the air outlet valves (6) to the turbogenerator group (7) .
  • the elements (9) represent the suction ducts for directing the air from the turbogenerator group to the air inlet valves (5) .
  • the compression ducts (8) and suction ducts (9) are made of high density polyethylene (HDPE) , stainless steel or other suitable materials,
  • the element (15) represents the detail of the upper part of an alveolus when the water column rises. The rise of the water column inside the alveolus compresses the air therein forming an overpressure (+) which closes the air inlet valve (5) and opens the air outlet valve (6) . The compressed. air in the alveolus exits by the air outlet valve (6) and is delivered by the compression ducts (8) to the inlet of the turbogenerator group.
  • the element (16) represents the detail of the upper part of an alveolus when the water column descends.
  • the descent of the water column in the alveolus draws the air therein forming ' a vacuum pressure (-) which opens the inlet, valve (5) and. closes the outlet valve (6) .
  • the air is drawn by the suction ducts (9) from the turbogenerator group until it enters the alveolus through the inlet valve (5) .
  • the movement of the oscillating water columns in the totality of the alveoli alternately generates air suction in some alveoli and compression in the others, such that due to the alternating opening and. closing of the air inlet and outlet valves of the alveoli, it creates a continuous air flow passing through the turbogenerator groups (7) which produce electricity .
  • buoy valves or suitable automatic valves that close when the water column, reaches the top of the alveoli must be placed under the air outlets, thus preventing

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

La présente invention concerne une installation pour la production d'énergie électrique à partir d'énergie des vagues, formée par des plateformes flottantes (1) ancrées au fond marin et constituée d'alvéoles verticales (2) qui sont coiffées sur le dessus et ouvertes en dessous, la ligne de flottaison (10) étant la moitié de la hauteur des alvéoles. Lorsque la vague (4) monte à l'intérieur des alvéoles, elle comprime l'air, par conséquent la fermeture des soupapes d'entrée (5), l'ouverture des soupapes de sortie (6) et la sortie de l'air via les conduits de compression (8). Lorsque la vague descend à l'intérieur des alvéoles, elle génère un tirage d'air qui ferme les soupapes de sortie (6) et ouvre les soupapes d'entrée (5), moyennant quoi l'air est aspiré via les conduits d'aspiration (9). Le mouvement des colonnes d'eau oscillante dans la totalité des alvéoles génère alternativement une aspiration d'air dans certaines alvéoles et une compression dans les autres, créant un flux d'air continu passant à travers les groupes de turbo-générateur (7) qui produisent de l'électricité.
PCT/PT2018/050005 2017-02-20 2018-02-07 Centrale électrique houlomotrice alvéolaire Ceased WO2018151617A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT109922A PT109922A (pt) 2017-02-20 2017-02-20 Central elétrica alveolar de ondas
PT109922 2017-02-20

Publications (1)

Publication Number Publication Date
WO2018151617A1 true WO2018151617A1 (fr) 2018-08-23

Family

ID=61249683

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PT2018/050005 Ceased WO2018151617A1 (fr) 2017-02-20 2018-02-07 Centrale électrique houlomotrice alvéolaire

Country Status (2)

Country Link
PT (1) PT109922A (fr)
WO (1) WO2018151617A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1791239A (en) * 1919-09-04 1931-02-03 Chester H Braselton Power-generating mechanism
JPS5343152A (en) * 1976-09-30 1978-04-19 Kaiyo Kagaku Gijutsu Center Wave force power generator having propeller type air turbine with separate injection nozzle
GB2429243A (en) * 2005-08-20 2007-02-21 Alex Rollo Wave generator
WO2009130670A2 (fr) * 2008-04-22 2009-10-29 Luigi Carmelo Rubino Dispositif pour produire de l’énergie à partir du mouvement des vagues
US7830032B1 (en) * 2009-08-28 2010-11-09 Breen Joseph G Generating power from natural waves in a body of water

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK200501616A (da) * 2005-11-18 2007-05-19 Rasmussen Kurt Due Multi absorberende bölgeenergianlæg (MAWEC)
EP2358993A4 (fr) * 2008-12-10 2013-03-13 Univ Stellenbosch Convertisseur d'energie des vagues
PT2944801T (pt) * 2014-05-14 2017-08-28 Sener Ing & Sist Dispositivo para captura de energia das ondas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1791239A (en) * 1919-09-04 1931-02-03 Chester H Braselton Power-generating mechanism
JPS5343152A (en) * 1976-09-30 1978-04-19 Kaiyo Kagaku Gijutsu Center Wave force power generator having propeller type air turbine with separate injection nozzle
GB2429243A (en) * 2005-08-20 2007-02-21 Alex Rollo Wave generator
WO2009130670A2 (fr) * 2008-04-22 2009-10-29 Luigi Carmelo Rubino Dispositif pour produire de l’énergie à partir du mouvement des vagues
US7830032B1 (en) * 2009-08-28 2010-11-09 Breen Joseph G Generating power from natural waves in a body of water

Also Published As

Publication number Publication date
PT109922A (pt) 2018-09-11

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