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WO2012063263A2 - Tour relevable assistée par ballon - Google Patents

Tour relevable assistée par ballon Download PDF

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Publication number
WO2012063263A2
WO2012063263A2 PCT/IN2011/000772 IN2011000772W WO2012063263A2 WO 2012063263 A2 WO2012063263 A2 WO 2012063263A2 IN 2011000772 W IN2011000772 W IN 2011000772W WO 2012063263 A2 WO2012063263 A2 WO 2012063263A2
Authority
WO
WIPO (PCT)
Prior art keywords
tower
lighter
balloon
air
tilt
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/IN2011/000772
Other languages
English (en)
Other versions
WO2012063263A3 (fr
Inventor
V. Rajagopal Raghunathan
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 WO2012063263A2 publication Critical patent/WO2012063263A2/fr
Publication of WO2012063263A3 publication Critical patent/WO2012063263A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
    • E04H12/345—Arrangements for tilting up whole structures or sections thereof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/20—Side-supporting means therefor, e.g. using guy ropes or struts
    • 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
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • 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
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/915—Mounting on supporting structures or systems on a stationary structure which is vertically adjustable
    • F05B2240/9152—Mounting on supporting structures or systems on a stationary structure which is vertically adjustable by being hinged
    • F05B2240/91521—Mounting on supporting structures or systems on a stationary structure which is vertically adjustable by being hinged at ground level
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/728—Onshore wind turbines

Definitions

  • This invention relates to the tilt up tower with unique methodology of lifting it by means of lighter than air balloon.
  • the current method of the tilt up tower requires the design to withstand the stress developing on the tower while erecting it or tilting it down. So, it requires sturdier design of tower thereby it is more expensive.
  • the present invention of erecting the tilt up tower along with wind turbine or any communication instrument utilizes the buoyant force of the lighter than air balloon to neutralize or reduce the stresses developed on the tower which paves the way to design the tower for stand up mode thereby the tower can be built and erected at lower cost than the existing systems.
  • a tilt-up tower In a tilt-up tower the base of the tower is fitted to a hinge which is bolted into the concrete foundations and often a gin pole is also fitted to the base of the tower which acts as a mechanical arm to give leverage to raise the tower.
  • the top of the tower can be tilted down to ground level for installation of the wind turbine or any communication instrument for future maintenance.
  • the whole structure can then be man hauled or winched up to the vertical relatively painlessly and safely.
  • a tilt-up tower must have guy wires on four sides (rather than the usual three) because it is impossible to safely tilt up a tower with guy wires on just three sides.
  • a winch is preferred because of the greater control they afford.
  • the towers are provided with a lever arm, called a gin-pole, which runs from the base to one of the guy anchors.
  • the gin-pole converts the pulling force on the pull-up rope or cable into a lifting force on the turbine or any communication instrument and tower.
  • the tilt up tower is preferred over mono pole tower, in order that the tower should with stand the stresses developing while tilting it up or down, it is always designed for tilt up mode. Even though the main objective of the tower relies on with standing the load by heavy winds it is designed for the maximum stresses developed at the tower while erecting it or tilting it down. So, it leads to sturdy design with more material thickness and thereby the material and manufacturing cost is higher.
  • U.S Pat. No. 4408958 to Alen.P.Hinderson discloses a tall tilt up tower capable of supporting a heavy wind turbine generator that starts out as multiple independent tubular sections which are nested inside each other while in a generally horizontal position.
  • the above invention minimizes the need of the need of extra heavy lift cranes while erecting or tilting down the tower.
  • U.S Pat. No: 2010/0083604 to Bent Vangsy discloses a lattice tower comprising of first section, composed of a first part and a second part, and a second section pivotally connected along an axis, the lower part of the tower being composed by the second section, that includes the legs of the lattice tower and the first part of the first section and the upper part of the lattice tower being composed by the second part of the first section.
  • the above invention uses simple trolleys to erect the tower rather than erecting it by large cranes.
  • a system for erection of tilt up tower with the aid of lighter than air balloon for its cost effective and reliable erection The steel wires from the balloon are anchored to the tilt up tower. Also, guy wires from the ground are anchored to various points of the tower for reducing the stress points while the tower is erected or it is tilted down. The guy wires anchored to the tower keep the stresses on the tower to a minimum.
  • the gin pole attached at right angle to the tower increase the leverage while the tower is being tilted up or down.
  • the buoyant force on the balloon compensates the gravitational pull due to the self weight of the tower and the turbine or any communication instrument mounted on it which eliminates the bending stresses on the tilt up tower while erecting it.
  • the bending stresses are neutralized or minimized by lighter than air balloon and guy wires thereby providing the way for the safe and economical erection of tower.
  • the balloon is anchored to adjust its position manually or through auto controls accordingly while erecting or tilting down the tower.
  • It is an object of the Invention lu provide a cost effective and reliable method of erection of till up tower of the wind turbine or any other tower structures, monopole or lattice towers.
  • the tilt up tower (3) pivoted at its one end by means of base plate and the other end housing the turbine or any communication instrument.
  • the gin pole (6) attached to right angles to the tower (ground position) increase the leverage while the tower is being tilted up or down.
  • the winch (8) for exerting mechanical pull or to with hold the gravitational pull on the tower and the wind turbine or any communication instrument by means of guy wire.
  • the anchor wires (10) to have control over the position of lighter than air balloon while the tower is being tilted up or down.
  • the self weight of the tower and the turbine or any communication instrument develops enormous bending stresses which will cause the tower to deform and collapse and also since it is designed for tilt up mode, the structure is sturdy with more material thickness is more to withstand the stresses developed in the tower.
  • the present invention relieves or minimizes the stresses by means of buoyancy force acting upon the lighter than air balloon and also it is can be designed for stand up mode thereby reducing the material cost and it paves the way for ease of erection at reasonable cost.
  • the tilt up tower is subjected to maximum stresses while erecting it or tilting it down than it is at upright position.
  • the present traditional towers are designed considering the stresses developing at erecting or tilting it down which is said to be tilt up mode design. So, it leads to sturdy design with more material thickness thereby the material and manufacturing cost is high.
  • the present invention employs the method of designing the tilt up tower only by considering the stresses that will develop in the tower while it is in upright position by means of the heavy winds or by centrifugal force of the components mounted over it thereby it eliminates the need of sturdy design thereby the tower can be built and erected at low cost. So, the present invention allows us to design the tower at low material and manufacturing cost which is said to be stand up mode design.
  • the present invention utilizes buoyancy force to tilt up or down the tower by means of lighter than air balloon.
  • the lighter than air balloon uses gases having low density than air and by varying the quantity of the gases occupying the balloon, it can be made to ascend or descend which will also tilt up or tilt down the tower respectively. Any gas having low density than air like hot air, Neon, Ammonia, Hydrogen, Helium and methane can be utilized to have buoyancy effect.
  • Buoyancy is an upward acting force, caused by fluid pressure that opposes an object's weight. If the object is either less dense than the liquid or is shaped appropriately, the force can keep the object afloat.
  • the lighter than air gas or hot air in the balloon is less dense than surrounding air which makes the balloon to float and lift the tower anchored to it. This phenomenon is utilized here for the economic and reliable erection of tilt up tower.
  • the present invention of erection of tilt up tower comprises of two modes of operation
  • Tilt down condition (only in the case of repair and maintenance) Tilt up condition:
  • the buoyancy effect on it is increased since the density of the lighter than air gas or hot air occupying the balloon is low than the surrounding air. So, the balloon tends to rise by buoyancy principle which eventually lifts or tilts up the tower anchored to the balloon by means of single or multiple steel wires.
  • the balloon When there is a need to tilt down the tower for repair or maintenance, the balloon is raised or made to float to the corresponding height of the tower and then steel wire from the balloon is anchored to the tower. Then by operating the anchor, the balloon is brought down by means of anchor wires which eventually tilt down the tower to the desired height. Also, the position and relative movement of balloon can be adjusted by means of anchor.
  • the method of tilting up the tower by means of assistance from lighter than air balloon comprises of:
  • the inflated lighter than air balloon (1) is anchored to the tilt up tower by means of single or multiple steel wires (2).
  • the guy wires (5) are anchored at various stress points of the tower to minimize the stress on the tower (3) while erecting or tilting it down.
  • the balloon (1) tends to float by the buoyancy force acting upon it.
  • the rising balloon (1) assists in tilting up the tower (3) while the guy wires (5) provide support to the tower (3).
  • F. The lighter than air gas or hot air occupying the balloon (1) is increased till the tower (3) attains the upright position.
  • the guy wires (5) are anchored to the ground at a distance from the structure's base to add stability to structures.
  • the method of tilting down (in case of repair and maintenance) the tower by means of assistance from lighter than air balloon and guy wires comprises of:
  • the inflated lighter than air balloon (1) is raised to height of the tower (3) by feeding lighter than air gas inside the balloon (1).
  • the balloon (1) is anchored to the tower by means of single or multiple steel wires (2).
  • the balloon (1) is brought down by operating the anchor (9) by means of anchor wires (10).
  • the tower (3) anchored to the balloon (1) is tilted down with the assistance of the lighter than air balloon (1) which is pulled down by means of anchor(9) or by varying the supply of lighter than air gas or hot air inside the lighter than air balloon(1).
  • the tower (3) is brought down to the desired height for maintenance or repair.
  • Fig.1 illustrates the tilt up tower at ground condition with the lighter than air balloon anchored to the tower by means of steel wires.
  • Fig.2, 2(a) illustrates the tilt up tower being lifted by lighter than air balloon by means of buoyant force.
  • Fig.3 illustrates the tilt up tower is tilted upright up with the assistance of lighter than air balloon and support of guy wires respectively.
  • Fig.4 illustrates a block diagram showing the steps involved in tilting up the tower with the aid of lighter than air balloon.
  • Fig.5 illustrates a block diagram showing the steps involved in tilting down the tower with the aid of lighter than air balloon.
  • Fig.1 illustrates the tilt up tower at ground condition with the lighter than air balloon anchored to the tower by means of steel wires.
  • guy wires (5) are anchored to the tower for minimizing the stress imposed upon the tower (3).
  • the lighter than air balloon (1) is inflated by blowing the lighter than air gas or hot air (in case of hot air balloon) to get its optimal shape and it is anchored to the tower (3) by means of single or multiple steel wires (2).
  • guy wires (5) from the tower (3) are anchored to some mechanical means to exert some force at the gin pole (6) to tilt up or down the tower (3) ⁇
  • Fig.2, 2(a) illustrates the tilt up tower being lifted by lighter than air balloon by means of buoyant force.
  • the density of the lighter than air gas or hot air inside the balloon (1) becomes lower than surrounding air. So, according to the buoyancy principle the balloon (1) floats while the tower (3) is being lifted along with it. So, by feeding more quantity of lighter than air gas or hot air the balloon (1) tends to go up further and also it assists in lifting up to 20- 50% of total load by means of buoyancy force which opposes the gravitational pull due to self weight of the tower (3) and the turbine (4) or any communication instrument mounted on it.
  • Fig.3 illustrates the tilt up tower is tilted upright up with the assistance of lighter than air balloon and support of guy wires respectively.
  • the tilt up tower (3) with the assistance of lighter than air balloon (1) and pull exerted by mechanical means is tilted to upright position.
  • guy wires(5) whose one end is attached to various ends of the tower(3) is anchored to the ground with their other ends at a distance from the structure's base which allows the tension of each guy wire(5) to offset the others.
  • Fig.4 illustrates a block diagram showing the steps involved in tilting up the tower with the aid of lighter than air balloon.
  • the method of tilting up the tower by means of assistance from lighter than air balloon and guy wires comprises of:
  • the inflated lighter than air balloon (1) is anchored to the tilt up tower (3) by means of single or multiple steel wires (2).
  • the guy wires (5) are anchored to the various stress points of the tower (3) to minimize the stress on the tower (3) while erecting or tilting it down.
  • the balloon (1) tends to float by the buoyancy force acting upon it.
  • the rising balloon (1) assists in tilting up the tower (3) while the guy wires (5) provide support to the tower (3).
  • the quantity of lighter than air gas or hot air occupying the balloon (1) is increased till the tower (3) attains the upright position.
  • the guy wires (5) are anchored to the ground at a distance from the structure's base to add stability to structures.
  • Fig.5 illustrates a block diagram showing the steps involved in tilting down the tower with the aid of lighter than balloon.
  • the method of tilting down (in case of repair and maintenance) the tower by means of assistance from lighter than air balloon and guy wires comprises of:
  • the inflated lighter than air balloon (1) is raised to height of the tower (3) by feeding lighter than air gas inside the balloon (1).
  • the balloon (1) is anchored to the tower (3) by means of single or multiple steel wires (2).
  • the balloon (1) is brought down by operating the anchor (9) by means of anchor wires (10).
  • the tower (3) anchored to the balloon (1) is tilted down with the assistance of the lighter than air balloon (1) which is pulled down by means of anchor(9) or by bringing the varying the supply of lighter than air gas or hot air inside the lighter than air balloon(1).
  • the tower (3) is brought down to the desired height for maintenance or repair.
  • the tower(3) is tilted up with the assistance from the buoyancy force of lighter than air balloon(1) and support from the guy wires(5) for its stability and to minimize the stress.
  • the guys wires(5) whose one end anchored to the tower(3) is anchored to the ground at their other ends for the tower(3) to with stand against the heavy winds.
  • the position and the movement of the balloon (1) are controlled by anchor (9) by means of anchor wires (10).
  • the balloon(1) While tilting down the tower(3) in case of repair and maintenance, the balloon(1) is raised to the height of the tower(3) by buoyancy force acting on the balloon(1) as explained earlier. It is then anchored to the tower (3) and the balloon(1) is brought down by operating the anchor(9) by means of anchor wires(10) either manually or through auto controls and thereby the tower(3) is tilted down along with the balloon(1).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

La présente invention concerne, selon un de ses aspects, un système destiné à relever une tour de façon à minimiser les contraintes subies en raison de la gravité sur une structure de tour inclinée pendant l'installation. La présente invention, comme représenté sur la Fig.(1), est constituée d'un ballon plus léger que l'air ancré fonctionnellement à la tour au moyen d'un ou de plusieurs filins en acier. En augmentant la quantité du gaz plus léger que l'air dans le ballon, la poussée d'Archimède réduit la charge agissant vers le bas du fait que le poids propre de la tour et de l'éolienne ou autre instrument est minimisé. En réduisant la quantité de gaz (hydrogène ou hélium) ou la température (dans le cas de l'air chaud) à l'intérieur du ballon pour la rapprocher de celle de l'air atmosphérique et également en actionnant l'ancre au moyen des filins d'ancre, le ballon plus léger que l'air tend à descendre, la tour pouvant ainsi être couchée à des fins de réparations et d'entretien.
PCT/IN2011/000772 2010-11-11 2011-11-11 Tour relevable assistée par ballon Ceased WO2012063263A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN3372/CHE/2010 2010-11-11
IN3372CH2010 2010-11-11

Publications (2)

Publication Number Publication Date
WO2012063263A2 true WO2012063263A2 (fr) 2012-05-18
WO2012063263A3 WO2012063263A3 (fr) 2012-10-04

Family

ID=45757747

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2011/000772 Ceased WO2012063263A2 (fr) 2010-11-11 2011-11-11 Tour relevable assistée par ballon

Country Status (1)

Country Link
WO (1) WO2012063263A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013101615U1 (de) 2013-04-16 2013-05-02 Volodymyr Slyvynskyi Kastenwabe aus Karbonplaste

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408958A (en) 1980-12-23 1983-10-11 The Bendix Corporation Wind turbine blade
US20100083604A1 (en) 2007-03-29 2010-04-08 Bent Vangsy Lattice tower and an erection method for a wind turbine with a lattice tower

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2823784B1 (fr) * 2001-04-18 2006-02-17 Vergnet Mat treillis et systeme d'erection et d'abaissement dun tel mat
US20110116905A1 (en) * 2008-03-11 2011-05-19 Cl Cargolifter Gmbh & Co. Kg A.A. Method and apparatus for transporting elongated, cumbersome loads

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408958A (en) 1980-12-23 1983-10-11 The Bendix Corporation Wind turbine blade
US20100083604A1 (en) 2007-03-29 2010-04-08 Bent Vangsy Lattice tower and an erection method for a wind turbine with a lattice tower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013101615U1 (de) 2013-04-16 2013-05-02 Volodymyr Slyvynskyi Kastenwabe aus Karbonplaste

Also Published As

Publication number Publication date
WO2012063263A3 (fr) 2012-10-04

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