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WO2015179520A1 - Flotteur de subsurface flottant - Google Patents

Flotteur de subsurface flottant Download PDF

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Publication number
WO2015179520A1
WO2015179520A1 PCT/US2015/031778 US2015031778W WO2015179520A1 WO 2015179520 A1 WO2015179520 A1 WO 2015179520A1 US 2015031778 W US2015031778 W US 2015031778W WO 2015179520 A1 WO2015179520 A1 WO 2015179520A1
Authority
WO
WIPO (PCT)
Prior art keywords
platform
attached
anchor
buoyant
water
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/US2015/031778
Other languages
English (en)
Inventor
Dallas MEGGITT
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 WO2015179520A1 publication Critical patent/WO2015179520A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • 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
    • F03B13/16—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 using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/20—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 using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" wherein both members, i.e. wom and rem are movable relative to the sea bed or shore
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
    • E02B17/024—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform shock absorbing means for the supporting construction
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/50—Anchored foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/52—Submerged foundations, i.e. submerged in open water
    • E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
    • 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 embodiments herein relate generally to ocean engineering.
  • a buoyant subsurface float is configured to provide a stable platform below a surface of a deep water upon a sea floor.
  • the buoyant subsurface float has a platform configured to be buoyant and submerged in the deep water.
  • a tethering system is attached to the platform and further attached to the sea floor. The tethering system holds the platform at an intermediate depth of water between the surface and the sea floor.
  • the buoyant subsurface float supports the weight of the tethering system.
  • a surface equipment is attached to the platform and configured to perform a function normally performed on a surface of shallow water.
  • sensors that monitor a state of the water are attached to the platform.
  • the sensors may be communicatively coupled to the tethering system or to a surface element for communication to other systems.
  • Other sensors may be incorporated to sense acoustic signatures in the water.
  • the tethering system includes a first anchor cable, attached to the platform and further directly attached to a first anchor.
  • a second anchor cable is attached to the platform and further directly attached to a second anchor.
  • a third anchor cable is attached to the platform and further directly attached to a third anchor.
  • the first anchor, the second anchor and the third anchor may be partially buried into the sea floor.
  • a single anchor cable and anchor are used.
  • the surface equipment includes a surface platform, configured to rest on the surface of the deep water whether in a crest or a trough.
  • a first generator and a second generator are mechanically coupled to surface platform. Lines are attached to the first generator and the second generator, which are further attached to the platform.
  • Figure 1 shows a side view of one embodiment of the present invention.
  • Figure 2 shows a side view of one embodiment of the present invention.
  • Figure 3 shows a side view of one embodiment of the present invention.
  • Figure 4 shows a side view of one embodiment of the present invention.
  • Figure 5A shows a side view of one embodiment of the present invention.
  • Figure 5b shows a side view of one embodiment of the present invention.
  • buoyant subsurface float 10 comprises platform 12.
  • Platform 12 is configured to be buoyant.
  • One function of buoyant subsurface float 10 is that it enables shallow water surface equipment to be used in deep water by being submerged at an intermediate depth. Shallow water is defined as being 20 meters or less. Deep water is defined as being 150 meters or more. This application uses the term "intermediate depth of water" to mean at least 20 meters but no more than 30 meters.
  • oscillatory motion power equipment One example of surface equipment 30 that can be used effectively in shallow water but not so in deep water is oscillatory motion power equipment. Oscillatory motion is highest at the surface and diminishes exponentially with depth. However, for standing waves (clapotis) near a reflecting coast, wave energy is also present as pressure oscillations at great depth, producing microseisms. These pressure fluctuations at greater depth are too small to be interesting from the point of view of wave power.
  • Tethering system 20 is configured to tether platform 12 to sea floor F.
  • Tethering system 20 is shown with platform 12 directly attached to first anchor cable 22 A.
  • First anchor cable 22A is directly attached to first anchor 24A.
  • Platform 12 directly attached to second anchor cable 22B.
  • Second anchor cable 22B is directly attached to second anchor 24B.
  • Platform 12 directly attached to third anchor cable 22C.
  • Third anchor cable 22C is directly attached to third anchor 24C.
  • First anchor 24A, second anchor 24B and third anchor 24C are partially buried into sea floor F.
  • a single anchor cable is mechanically coupled to a single anchor 24 which connects platform 12 to sea floor F.
  • first platform 12A is mechanically coupled to first anchor 24A with first anchor cable 22 A.
  • Second platform 12B is mechanically coupled to second anchor 24B with second anchor cable 22B.
  • Third platform 12C is mechanically coupled to third anchor 24C with third anchor cable 22C.
  • second platform 12B is mechanically coupled to first platform 12A and third platform 12C.
  • Each platform is mechanically coupled to a single anchor cable 22 which is mechanically coupled to a single anchor 24.
  • the platforms are connected to anchor cable 22 with anchor wire 26.
  • Surface equipment 30 is configured to be shallow water surface equipment that is configured to work in shallow water, but is enabled to work in deep water due to buoyant subsurface float 10.
  • water W has surface S that moves from crest S I to trough S2 due to waves.
  • Surface equipment 30 can generate electrical power from this movement.
  • Surface platform 32 is configured to rest on surface S of water W whether in crest S I or trough S2.
  • First generator 34, second generator 35 and third generator 36 are mechanically coupled to surface platform 32.
  • First generator 34, second generator 35 and third generator are further attached to line 38, which is further attached to platform 12.
  • buoyant subsurface float 110 further comprises circumferential frame members 1 12 arranged into frame 114.
  • Frame 114 is attached to tension member assembly 1 16 and frame bottom 126.
  • Frame bottom 126 further comprises a plurality of valves 124 attached to frame bottom 126 with spring hinges such that the valves open inward as anchor cable 122 pulls buoyant subsurface float 1 10.
  • the frame is mechanically coupled to fabric membrane 130 which is configured to generally contain water within buoyant subsurface float 1 10.
  • frame 114 can be fabricated of metal or composite materials, with or without tension member elements of metal or synthetic construction.
  • the structure provides buoyancy to maintain tension in the structure and the mooring system.
  • Anchor cable 122 can be attached to any point on the structure.
  • buoyant subsurface float 110 can be suspended in the water column by a tension member assembly 116 that may be made of metal or synthetic tension elements. The mass of water inside of buoyant subsurface float 1 10 increasing the resistance to motion of buoyant subsurface float 110 to imposed forces.
  • vertical drag and inertia loads are carried by frame 114.
  • Fabric membrane 130 structure does not carry any of these loads.
  • Alternative constructions can use the fabric structure as a load-carrying member.
  • Hoop tension from internal pressure is carried by fabric membrane 130 and circumferential frame members 1 12. Internal pressure is caused by dynamic pressure at the mouth of the cone due to velocity and the inertia of the water column due to acceleration. This provides the resistance to motion of buoyant subsurface float 110.
  • Embodiments of the disclosed invention can be useful for providing a stable platform below a surface of a deep water upon a sea floor.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

La présente invention concerne le génie océanique. Jusqu'alors, des systèmes d'eau peu profonde ne pouvaient pas être installés en eau profonde. Des modes de réalisation de la présente invention utilisent une plateforme (12) configurée pour être flottante et immergée dans une eau profonde (W). Un système d'attache (20) est fixé à la plateforme et est en outre fixé au fond de l'océan (F). Le système d'attache maintient la plateforme à une profondeur d'eau intermédiaire entre la surface (S) et le fond de l'océan. Un équipement de surface (30) est fixé à la plateforme et configuré pour exécuter une fonction normalement effectuée à la surface d'une eau peu profonde.
PCT/US2015/031778 2014-05-20 2015-05-20 Flotteur de subsurface flottant Ceased WO2015179520A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462000710P 2014-05-20 2014-05-20
US62/000,710 2014-05-20

Publications (1)

Publication Number Publication Date
WO2015179520A1 true WO2015179520A1 (fr) 2015-11-26

Family

ID=54554696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/031778 Ceased WO2015179520A1 (fr) 2014-05-20 2015-05-20 Flotteur de subsurface flottant

Country Status (2)

Country Link
US (1) US20150337515A1 (fr)
WO (1) WO2015179520A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI694953B (zh) * 2016-10-21 2020-06-01 國立清華大學 繫泊系統及方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009146564A1 (fr) * 2008-04-23 2009-12-10 Muench Otto Centrale houlomotrice
US20100092242A1 (en) * 2008-10-09 2010-04-15 Rodney Ashby Rasmussen Systems and methods for harnessing wave energy
US20110012358A1 (en) * 2008-02-07 2011-01-20 Paul Brewster Wave energy conversion device
US20110113771A1 (en) * 2008-07-14 2011-05-19 Marine Power Systems Limited Wave Powered Generator
US20120090313A1 (en) * 2009-04-03 2012-04-19 Pontoon Power As Device for floating wave power plant
US20120304911A1 (en) * 2011-05-31 2012-12-06 Converteam Naval Systems, Inc. Active control system for floating offshore wind turbine platforms
US20130160444A1 (en) * 2010-06-18 2013-06-27 Marine Power Systems Ltd Reaction Body for Wave Energy Apparatus

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Publication number Priority date Publication date Assignee Title
US4367982A (en) * 1980-09-04 1983-01-11 Mobil Oil Corporation Safety device for anchored marine structure
US4631921A (en) * 1985-08-05 1986-12-30 Linderfelt Hal R Float for wave energy harvesting device
US6651580B2 (en) * 2002-02-22 2003-11-25 Globalsantafe Corporation Method and system for mooring
US7896576B2 (en) * 2007-04-25 2011-03-01 Single Buoy Moorings, Inc. Enhanced wave power generators
US8925313B2 (en) * 2008-02-22 2015-01-06 Brian Lee Moffat Wave energy conversion apparatus
US8471396B2 (en) * 2008-04-23 2013-06-25 Principle Power, Inc. Column-stabilized offshore platform with water-entrapment plates and asymmetric mooring system for support of offshore wind turbines
WO2012051382A1 (fr) * 2010-10-13 2012-04-19 Houvener Robert C Dispositif et méthode de transfert d'énergie hydrocinétique
US20150130191A1 (en) * 2011-05-04 2015-05-14 SeaPower Systems, LLC. Gravity-based energy-storage system and method
US20140161538A1 (en) * 2012-12-12 2014-06-12 Dallas Joel Meggitt System and method for undersea micropile deployment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110012358A1 (en) * 2008-02-07 2011-01-20 Paul Brewster Wave energy conversion device
WO2009146564A1 (fr) * 2008-04-23 2009-12-10 Muench Otto Centrale houlomotrice
US20110113771A1 (en) * 2008-07-14 2011-05-19 Marine Power Systems Limited Wave Powered Generator
US20100092242A1 (en) * 2008-10-09 2010-04-15 Rodney Ashby Rasmussen Systems and methods for harnessing wave energy
US20120090313A1 (en) * 2009-04-03 2012-04-19 Pontoon Power As Device for floating wave power plant
US20130160444A1 (en) * 2010-06-18 2013-06-27 Marine Power Systems Ltd Reaction Body for Wave Energy Apparatus
US20120304911A1 (en) * 2011-05-31 2012-12-06 Converteam Naval Systems, Inc. Active control system for floating offshore wind turbine platforms

Also Published As

Publication number Publication date
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