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WO2025228497A1 - Plateforme dans une tour d'éolienne et agencement de raccordement pour la plateforme - Google Patents

Plateforme dans une tour d'éolienne et agencement de raccordement pour la plateforme

Info

Publication number
WO2025228497A1
WO2025228497A1 PCT/DK2025/050059 DK2025050059W WO2025228497A1 WO 2025228497 A1 WO2025228497 A1 WO 2025228497A1 DK 2025050059 W DK2025050059 W DK 2025050059W WO 2025228497 A1 WO2025228497 A1 WO 2025228497A1
Authority
WO
WIPO (PCT)
Prior art keywords
platform
tower
projection
wind turbine
opening
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.)
Pending
Application number
PCT/DK2025/050059
Other languages
English (en)
Inventor
Anders Qvist
Muthukumar SENTHILVEL
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.)
Vestas Wind Systems AS
Original Assignee
Vestas Wind Systems AS
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 Vestas Wind Systems AS filed Critical Vestas Wind Systems AS
Publication of WO2025228497A1 publication Critical patent/WO2025228497A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/80—Arrangement of components within nacelles or towers
    • F03D80/88—Arrangement of components within nacelles or towers of mechanical components
    • 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
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/201—Towers
    • 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

Definitions

  • This disclosure relates generally to approaches for connecting internal tower platforms to the interior walls of wind turbine towers.
  • Such platforms can be designed to include entranceways, storage enclosures, ladderways, electrical equipment, cable guides, elevator hatchways and so on.
  • work platforms are configured to be similar in shape to the interior tower cross section to minimise the gap around the edge of the platform and the tower.
  • Suitable fixing points can be provided to attach the platform to the tower at multiple circumferential positions.
  • these fixings are rigid points as is achieved by welded or bolted connections which achieves a strong and stable fixing between the platform and the tower.
  • a platform for an internal shaft of a wind turbine tower having at least one tower wall connector comprising a first member and a second member, wherein one of the first member and the second member is connected to the platform and wherein the other of the first member and the second member is adapted for connection to a wall of a wind turbine tower.
  • the first member and the second member are oriented and arranged to able to slide with respect to one another, wherein the first member includes an opening, and wherein the second member includes a projection that extends through the opening.
  • a benefit of the invention is that the configuration of the first and second members permits the platform to move slightly relative to the tower wall which means that the connector serves to accommodate dynamic deformation, or ‘ovalisation’ of the tower wall, in use.
  • the opening is sized to define a clearance around the projection, such that relative sliding movement between the first member and the second member is delimited by the clearance defined between the projection and the opening.
  • the first member is a plate and wherein the second member is a plate. Further it is envisaged that the first plate and the second plate may be arranged in parallel to one another.
  • a low-friction surface may be provided between the first member and the second member.
  • the low-friction surface is provided by an intermediate element separate to the first member and the second member.
  • the intermediate element may extend about the projection and is therefore provided with an opening for this purpose.
  • the intermediate element may instead be composed of several such elements spaced about the projection.
  • Figure 1 is a front view of a wind turbine tower
  • Figure 2 is a cut-away view of the wind turbine illustrating a work platform housed in the tower, viewed from above;
  • Figure 3 is a side view, taken in cross section, of the work platform in the wind turbine tower;
  • Figure 4 is a perspective view of a support beam of the work platform, illustrating a connector for connecting the work platform to a tower wall;
  • Figure 5 and 6 are perspective views, like that in Figure 4, shown different section views of the connector
  • Figure 7a to 7c show in schematic form how parts of the connector are permitted to slide linearly and angularly with respect to one another.
  • Figure 8 shows another example in schematic form.
  • the examples of the invention provide a work platform that is configured to connect to an interior surface of a tower wall by way of a plurality of wall connectors.
  • At least one of the wall connectors is configured to accommodate dynamic deformation in the tower wall so as to reduce corresponding dynamic loading of the wall connectors and thereby avoid undue stress in these components.
  • the at least one of the wall connectors may comprise a pair of plates, one of which is connectable to the tower wall, directly or indirectly, and the other one of which is connected to a support structure for the work platform.
  • the connector is configured so that they are able to slide relative to one another, which sliding movement accommodates deformation of the tower wall.
  • the sliding movement may be translational movement (i.e. linear movement) or angular movement.
  • Figure 1 shows a typical horizontal axis wind turbine 2, that includes a nacelle 4, mounted on top of a tower 6, which supports a front facing rotor 8 comprising a plurality of coplanar blades 10.
  • the rotor 8 is connected to a powertrain housed within the nacelle 4.
  • the powertrain comprises components required to convert rotation of the rotor into electricity, including a generator, a transmission system and a controller, although these components are not shown in Figure 1 or described in detail for brevity.
  • a horizontal-axis wind turbine is shown in Figure 1 , which is a common configuration of wind turbine, it should be noted that the invention may be applicable to other wind turbine configurations.
  • the tower may be made from steel or concrete, the choice of which depends on many factors such as expected loading conditions, hub height, and location, to name a few examples.
  • Hybrid towers of concrete and steel are also known.
  • the wind turbine 2 is shown in Figure 1 as an offshore wind turbine and, as such, is mounted on a monopile foundation 12 as is generally known in the art. Other types of offshore foundation are known.
  • the access platform 14 encircles the tower 6 and provides personnel a stable platform from which to enter the interior of the tower 6 through a doorway 16.
  • a work platform which is not shown in Figure 1 but can be considered to be located at the level just below the doorway 16 such that maintenance personnel can stand on the work platform.
  • Figure 2 provides a top-down view of an exemplary work platform inside the tower 6, whereas Figure 3 provides a side view.
  • the tower 6 comprises a tower wall 18 having an interior wall surface 20a and an exterior wall surface 20b.
  • the work platform is indicated generally at 22.
  • the work platform 22 comprises a load deck 24 and a supporting structure 26.
  • the load deck provides an upper load surface 25.
  • the load surface 25 is shown as a circular outline in Figure 2, but is shown in a side view in Figure 3.
  • the load deck 24 is circular in the illustrated example, circularity is not essential. Also, it should be noted that since it is just the outline of the load deck 24 that is shown, the load deck 24 may comprise other features such as hatchways, mounting points for equipment, storage lockets, ladderways and so on.
  • the load deck 24 is supported by the support structure 26.
  • the support structure 26 is located beneath the load deck 24 when considered in the orientation of the tower 6.
  • suitable fixings such as bolts, studs, or clips (for example) are provided to join the load deck 24 to the support structure 26.
  • the support structure 26 comprises an irregular grid or network of beams 28.
  • the precise configuration of the network is governed by various design factors such as the expected load profile of the load deck 24, position of hatchways, equipment and so on.
  • beams 28 would be understood to be acceptable by the skilled person.
  • a more regular arrangement comprising a plurality of beams extending in transverse directions at regular intervals, or a set of beams in a ‘hub and spoke’ arrangement, would both be acceptable.
  • the beams 28 of the supporting structure 26 may be any suitable beam type, for example box section beams, or I-beams. In this example, the beams 28 are I-beams.
  • the ends of at least some of the beams 28 that are proximate to the tower wall 18 are fixed to the tower wall 18 by way of respective connectors 30.
  • Some connectors 30 are provided at intermediate points along a respective beam 28.
  • At least some of the connectors 30 are configured to permit some relative movement between the support structure 26 and the tower wall 18.
  • the relative movement is predominantly sliding movement when considered in the plane of the support structure, which is more or less horizontal in the context of a vertical wind turbine tower.
  • some of the connectors 30 may be adapted to permit relative sliding movement (either linear or angular movement, as will be described), it should be noted that one or more of the connectors 30 may be fixed against any relative movement. For example, it may be desirable to position fixed connectors near to an entranceway of the tower. Still some of the connectors 30 may be adapted for only linear translational movement or for only angular sliding movement, as will become apparent from the discussion that follows.
  • Figures 4 to 6 show various views of one of the connectors 30 which are equipped with the functionality of permitting some movement between the support structure 26 and the tower wall 18, as the tower wall 18 deforms in use.
  • the connector 30 includes a first member 40 and a second member 42 which are configured and arranged to be able to move relative to one another.
  • the first member 40 is connected to the support structure 26 and, thus, the load deck 24.
  • the second member 42 is adapted for connection to tower wall 18.
  • the connection between the second member 42 and the tower wall 18 is not shown in Figures 4 to 6 but will be explained further herein.
  • the first member 40 and the second member 42 are in the form of plates in this example, and specifically generally rectangular plates although the shape is not essential. Being plate-like in form, the first member 40 and the second member 42 are arranged to be parallel to one another so they can slide.
  • the first member 40 is connected to a beam 28 of the support structure 26.
  • the beam 28 is an I-beam and extends generally in the direction of an axis X.
  • the beam 28 has upper and lower flanges 41 ,43, a central web 44.
  • the beam 28 also has an end face or plate 46. The end face 46 extends perpendicularly to the upper and lower flanges 41 ,43.
  • the first member 40 is connected directly to the end face 46 in this example for example by welding, as is a typical approach for these types of structures.
  • the surround 48 comprises an upper plate 50 and an end plate 52 that are welded together at right angles.
  • a side plate 54 is also provided as an option.
  • the surround 48 is open-sided as seen in Figure 4, so that access is afforded to the first and second members 40,42.
  • connection structure 56 The second member 42 is adapted for connection to tower wall 18 by a suitable connection structure 56.
  • the purpose of the connection structure 56 is to connect the second member 42 to the tower wall 18 securely, so it should be appreciated that the connection structure 56 may take many different forms to whilst still performing this function.
  • the connection structure 56 comprises a transverse plate 58 that extends underneath and away from the second member 42 in a direction along the axis X of the beam 28. In effect, therefore, the transverse plate 58 provide a longitudinal extension of the second member 42.
  • the transverse plate 58 may be connected to the second member 42 in any suitable way.
  • the transverse plate 56 is welded to the second member 42.
  • the joint between the transverse plate 56 and the second member 42 is strengthened by a web 60.
  • the web 60 is shown as extending perpendicularly to the transverse plate 58 on one side, but it may also be double-sided.
  • the transverse plate 58 has an upwardly extending portion 62 which provides a mounting point for a mounting plate 64 (shown in Figure 4; not shown in Figures 5 and 6).
  • the mounting plate 64 is shown in dashed lines in Figure 4 as an example.
  • the mounting plate 64 is fixed to the transverse plate 58 by a set of bolts 66, of which there are three in this example.
  • the bolts 66 fasten to a mounting block 68 which acts as a backing or brace to secure the mounting plate 64 to the transverse plate 58.
  • An end 64a of the mounting plate 64 distal from the transverse plate 58 can be welded to the tower wall 18.
  • the end 64a is shown as a flanged face in this example, although this is not essential.
  • the adjacent arrangement of the first member 40 and the second member 42 permits them to slide relative to one another which enables the beam 28 to move with respect to the tower wall 18.
  • This configuration allows the platform 22 to accommodate ovalities in the tower wall 18.
  • a friction reducing means or surface to reduce the friction of sliding movement between the first member 40 and the second member 42.
  • the friction reducing means is provided by an intermediate element 70 in the form of a plate 70 which is positioned between the first member 40 the second member 42.
  • the low friction plate 70 may be formed from any suitable material that would function to reduce friction between the two metal components of the first member 40 and the second member 42.
  • the low friction plate 70 therefore provides a low friction surface 71.
  • the low friction plate 70 may be formed from a suitable engineering plastics such as Nylon (RTM) or Teflon (RTM), although the skilled person would appreciate that other materials would also perform a similar function.
  • RTM Nylon
  • RTM Teflon
  • the functionality of the low friction plate 70 may be provided instead by a low friction coating applied to either the first member 40 or the second member 42, namely on the adjacent contacting surfaces.
  • suitable low friction coatings maybe diamond-like carbon (DLC) or polytetrafluoroethylene (PTFE).
  • a suitable low friction coating to the first member 40 and/or the second member 42 may be achieved by a highly polished surface finish.
  • the low friction plate 70 has a form similar to that of the first member 40 and the second member 42 and extends about the projection 72 and so is provided with an opening 73 therein.
  • the connector 30 also includes means to limit movement between the first member 40 and the second member 42. This movement limiting means beat by a projection 72 that extends from an upper surface 42a of the second member 42 and which is accommodated by an opening 74 in the first member 40.
  • the projection 72 is shown most clearly in Figures 5 and 6.
  • the projection 72 maybe an integral part of the second member 42 in the sense of being monolithic with the second member 42. However, in the illustrated example the projection 72 is a separate component to the second member 42.
  • the projection 72 is fixed to the second member 42.
  • the fixing between these parts may be achieved in any suitable way. Although they may be bonded in some way or welded in the illustrated example the projection 72 is bolted to the second member 42.
  • the bolted connection in the illustrated example is achieved by way of a set of four bolts 76 arranged in a square configuration which are united by a separate upper flange 78 through which all four bolts extend. The bolt 76 therefore secure together the upper flange 78, the projection 72 and the second member 42.
  • the projection 72 has a radial outer surface 82.
  • a clearance C is defined between the radial outer surface 82 of the projection 72 and a radial inner surface 84 of the opening 74.
  • the shape and configuration of the radial outer surface 82 and the radial inner surface 84 define the extent of the clearance C which thereby sets the amount of movement that the first member 40 is allowed to slide relative to the second member 42.
  • Figures 7a to 7c show in schematic form the type of movement permitted by the connector 30.
  • Figure 7a shows the connector 30 in a neutral position.
  • the projection 72 associated with the second member 42 is in the middle of the opening 74 associated with the first member 40.
  • the connector is operable to permit linear sliding of the beam 28 relative to the tower wall 18 but also the degree of annular movement.
  • Figure 7b shows that the second member 42 has moved linearly with respect to the first member 40 whereas Figure 7c shows that the second member 42 has moved angularly with respect to the first member 40.
  • the clearance C extends about the projection 72 due to the size of the opening 74 being bigger than the projection 72.
  • the first member 40 can slide linearly and also angularly with respect to the second number 42.
  • Figure 8 shows one example.
  • the projection 72 is shown as the same size as the opening 74. This means that the first member 40 can move angularly with respect to the second member 42 but that linear sliding movement is not permitted. It will be appreciated that in this example there is no significant clearance C between the projection 72 and the opening 74 since they are configured to be very similar in dimension to permit angular movement only between the first member 40 and the second member 42.

Landscapes

  • Engineering & Computer Science (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

L'invention concerne une plateforme pour un arbre interne d'une tour d'éolienne ; ladite plateforme comprend au moins un connecteur de paroi de tour comportant un premier élément et un second élément ; l'un du premier élément et du second élément est relié à la plateforme et l'autre du premier élément et du second élément est conçu pour être relié à une paroi d'une tour d'éolienne. Le premier élément et le second élément sont orientés et agencés pour pouvoir coulisser l'un par rapport à l'autre, le premier élément comprenant une ouverture, et le second élément comprenant une saillie qui s'étend à travers l'ouverture. Un avantage de l'invention est que la configuration des premier et second éléments permet à la plateforme de se déplacer légèrement par rapport à la paroi de la tour, ce qui signifie que le connecteur sert à recevoir une déformation dynamique, ou 'ovalisation' de la paroi de la tour, lors de l'utilisation.
PCT/DK2025/050059 2024-05-02 2025-05-01 Plateforme dans une tour d'éolienne et agencement de raccordement pour la plateforme Pending WO2025228497A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IN202411034853 2024-05-02
IN202411034853 2024-05-02
DKPA202430323 2024-06-14
DKPA202430323 2024-06-14

Publications (1)

Publication Number Publication Date
WO2025228497A1 true WO2025228497A1 (fr) 2025-11-06

Family

ID=95825390

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2025/050059 Pending WO2025228497A1 (fr) 2024-05-02 2025-05-01 Plateforme dans une tour d'éolienne et agencement de raccordement pour la plateforme

Country Status (1)

Country Link
WO (1) WO2025228497A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090126309A1 (en) * 2007-11-15 2009-05-21 Thomas Edward Lyness Methods and systems for assembling a tower
US20140075860A1 (en) * 2012-09-14 2014-03-20 General Electric Company Tower section and method for installing tower for wind turbine
US20150037166A1 (en) * 2013-07-30 2015-02-05 General Electric Company Wind turbine tower having floating platform

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090126309A1 (en) * 2007-11-15 2009-05-21 Thomas Edward Lyness Methods and systems for assembling a tower
US20140075860A1 (en) * 2012-09-14 2014-03-20 General Electric Company Tower section and method for installing tower for wind turbine
US20150037166A1 (en) * 2013-07-30 2015-02-05 General Electric Company Wind turbine tower having floating platform

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Fundamentals of Engineering Tribology with Applications", 11 March 2016, CAMBRIDGE UNIVERSITY PRESS, ISBN: 978-1-107-06387-7, article HIRANI HARISH: "Fundamentals of Engineering Tribology with Applications", pages: 20 - 21, XP093289284 *
WIKIPEDIA: "Plain bearing", ONLINE ARTICLE, 17 April 2024 (2024-04-17), XP093288978, Retrieved from the Internet <URL:https://en.wikipedia.org/w/index.php?title=Plain_bearing&oldid=1219442024> [retrieved on 20250623] *

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