EP2955276B1 - Offshore-Fundament für Windenergieanlagen mit mehrschichtiger Beschichtung - Google Patents

Offshore-Fundament für Windenergieanlagen mit mehrschichtiger Beschichtung Download PDF

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Publication number
EP2955276B1
EP2955276B1 EP14171980.7A EP14171980A EP2955276B1 EP 2955276 B1 EP2955276 B1 EP 2955276B1 EP 14171980 A EP14171980 A EP 14171980A EP 2955276 B1 EP2955276 B1 EP 2955276B1
Authority
EP
European Patent Office
Prior art keywords
protective coating
offshore
struts
supporting
supporting structure
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.)
Active
Application number
EP14171980.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2955276A1 (de
Inventor
Emilio Reales Bertomeo
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.)
Construction Research and Technology GmbH
Reamotion GmbH
Original Assignee
Construction Research and Technology GmbH
Reamotion GmbH
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 Construction Research and Technology GmbH, Reamotion GmbH filed Critical Construction Research and Technology GmbH
Priority to EP14171980.7A priority Critical patent/EP2955276B1/de
Priority to PL14171980T priority patent/PL2955276T3/pl
Priority to ES14171980.7T priority patent/ES2694420T3/es
Priority to DK14171980.7T priority patent/DK2955276T3/en
Publication of EP2955276A1 publication Critical patent/EP2955276A1/de
Application granted granted Critical
Publication of EP2955276B1 publication Critical patent/EP2955276B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B17/00Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0017Means for protecting offshore constructions
    • E02B17/0026Means for protecting offshore constructions against corrosion
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B17/00Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0017Means for protecting offshore constructions
    • E02B17/003Fenders
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B17/00Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0034Maintenance, repair or inspection of offshore constructions
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B17/00Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02Artificial 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
    • E02B17/027Artificial 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 steel structures
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B17/00Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0091Offshore structures for wind turbines

Definitions

  • the invention relates to an offshore support structure for a wind turbine with one or more attachment means for attaching the support structure to a body of water, a receiving device for receiving a tower shaft of the wind turbine and a support section, which has an underwater area and an over-water area and one or more support struts, wherein the support struts connect the receiving device with the fastening means.
  • the invention further relates to a method for producing an offshore support structure for a wind power plant, comprising the steps of: coating one or more support struts of the support structure with a multilayer protective coating and connecting a plurality of support struts together.
  • Such offshore support structures are also referred to as foundation structures and serve the installation of wind turbines in windy offshore areas.
  • the support portion of such an offshore support structure may be formed, for example, as a jacket, monopile or tripod structure.
  • the support sections of offshore carrying tracks always have an underwater area and an overwater area.
  • the underwater area of the carrying section is exposed to the influences of the stream of water and the prevailing milieu.
  • the water area of the support section protrudes from the water and is thus visually noticeable by shipping.
  • the above-water area of the support section is exposed, among other things, to moist air in the area of the water surface as well as the prevailing winds.
  • the requirements placed on the overwater area of the support section thus differ considerably from the requirements placed on the underwater area of the support section.
  • the underwater area and the overwater area of the carrying section must withstand loads which are caused, for example, by collisions with flotsam or ships, in particular maintenance ships.
  • the problem underlying the invention is therefore to be seen in providing an offshore support structure, which has an increased life compared to the already known offshore support structures and is exposed to lower damage risks. It is a further object of the invention to provide a method for producing such an offshore support structure.
  • rust can already arise in the phase of storage and installation, often take months to the active corrosion system is connected.
  • the invention is achieved in a first aspect with an offshore support structure of the type mentioned, wherein one or more support struts in the underwater area and one or more support struts in the overwater area are at least partially coated with a multi-layer protective coating.
  • the invention makes use of the knowledge that the contact between a corrosive environment and the support struts both in the underwater area and in the overwater area by means of a multi-layer protective coating considerably reduced or even completely prevented.
  • the multi-layer protective coating additionally has the effect of depriving the microbiological bacteria of the possibility of adhering directly to the surface of the support struts and thus of attacking the support struts.
  • the oxygen expelled from the bacteria does not reach the surface of the support struts, preferably made of steel, in the underwater area, so that no corrosion of the support struts occurs.
  • the material selection of the multilayer protective coating can substantially increase the resistance of the offshore support structure to external loads, such as those caused by collisions with flotsam or ships.
  • the material of the individual layers of the multilayer protective coating can be selected, for example, such that the support struts on the coated sections have increased rigidity and increased wear and abrasion resistance.
  • the individual layers of the multilayer protective coating may also be selected such that the protective coating has high tensile strength, good damping properties and increased tear propagation resistance.
  • a suitable material selection can be used to realize a multi-layer protective coating which is adapted to the respective water and air temperatures of the offshore area.
  • the multi-layer protective coating provides high resistance to oils, fats, oxygen and ozone.
  • the multi-layer protective coating can be designed such that it has a cushioning and damping effect in the case of external impact, for example due to flotsam, so that a reduced force is applied to the actual support struts of the support section of the offshore support structure. Furthermore, by a suitable material selection or combination of materials for the individual layers of the protective coating, the degree of hardness of the protective coating can be varied so that, for example, brittle flaking of large-area coating sections with external force is prevented. Also can be compensated by the multi-layer protective coating unfavorable vibration properties of the coated support strut or the coated support struts.
  • one or more, preferably all support struts in the underwater area are coated on their outer surfaces and / or substantially completely with the multilayer protective coating.
  • one or more, preferably all support struts in the overwater area on their outer surfaces and / or substantially completely coated with the multilayer protective coating.
  • Under the outer surfaces of the support struts underwater are the To understand surfaces that come in contact with the water.
  • Under the outer surfaces of the support struts in the overwater area are the areas to understand, which come into contact with the ambient air. If the supporting struts are designed, for example, as steel tubes, the outer surfaces in the underwater area and in the above-water area are to be understood as the outer lateral surfaces of the tubes.
  • an outer lacquer layer is applied to the multi-layer protective coating in the area above the water.
  • an outer lacquer layer which is resistant to ultraviolet radiation.
  • the outer lacquer layer can for example be applied directly to the multi-layer protective coating.
  • an additional adhesion promoter or an additional adhesion promoter layer may be used in order to realize adhesion of the outer lacquer layer to the multilayer coating.
  • the outer lacquer layer has color pigments.
  • the embedded color pigments By the embedded color pigments, the perceptibility of the over-water area of the support section and thus the perceptibility of the entire offshore support structure is increased. This results in a significantly reduced risk of unintentional contact or accidental collision with a watercraft.
  • adverse weather conditions such as heavy fog and / or heavy rain, the offshore support structure is visually perceived much earlier due to the colored lacquer layer on the struts of the support section in the overwater area of sighted skippers. The risk of a collision is reduced by a multiple.
  • the inventive offshore support structure is further developed advantageous in that the color pigments are formed as inorganic color pigments which retain their optical color effect when exposed to ultraviolet radiation. This ensures that there is no fading of the outer colored lacquer layer.
  • the reduced collision risk due to the increased optical Perceptibility of the offshore support structure thus always remains. This also leads to the fact that a renewal of the outer colored lacquer layer due to a fading of the color is not necessary.
  • the maintenance costs of an offshore support structure, which has an outer colored lacquer layer in the above-water area, which retains its optical color effect when exposed to ultraviolet radiation, are consequently considerably reduced.
  • the color pigments are yellow.
  • Particularly preferred is the formation of color pigments in the color traffic yellow, which is referred to as RAL 1023 according to the RAL standard.
  • the identification of offshore support structures by a yellow traffic color is a necessary condition for support structures, which are set up in offshore areas within the Federal Republic of Germany. It is to be expected that the identification of offshore support structures by a traffic yellow color design will become the international standard in the near future.
  • the multilayer protective coating comprises at least one of the following layers: at least one adhesion promoter, preferably two adhesion promoters, and, according to the invention, at least one polymer layer, preferably a two-component polymer layer.
  • an adhesion promoter which is also referred to as a primer
  • a polymer layer can also be easily applied to struts with a rough or texture-bearing surface. It thus eliminates the processing step of smoothing the outer surface of the struts used, which are preferably formed as steel tubes.
  • the desired properties of the multilayer coating can be adjusted in a targeted manner.
  • positive properties of two polymer materials can be coupled to one another so that a particularly rigid, wear-resistant, abrasion-resistant and tensile-resistant as well as damping and tear-resistant coating can be realized.
  • the polymer layer comprises polyurethane or is substantially completely formed from polyurethane.
  • Polyurethane is particularly suitable as a coating material because it is tough and elastically deformable and thus does not tend to crack. If it comes to a stress on the polyurethane layer, for example, to a pressing or slitting of the polyurethane layer, is an elastic Deformation of the polyurethane layer caused. After the load has been removed, the polyurethane layer either returns to its original state or a crack that has formed is essentially closed again.
  • polyurethane has advantageous damping properties, which lead to external external impact loads being damped on the support section before introduction of force into the support struts.
  • the multilayer protective coating preferably has at least one of the following layers: epoxy resin adhesion promoter, adhesive adhesion promoter, a polyethylene layer or a polypropylene layer.
  • the various layers are coated in a layer thickness ranging from one millimeter to five millimeters.
  • the polymer layer has plasticizers.
  • plasticizers By means of plasticizers, the elastic properties of the polymer layer can be precisely adjusted.
  • various polymer layers tailored to the requirements of the respective area can be realized.
  • the offshore support structure according to the invention is further developed by one or more corrosion protection devices, which are designed to provide active cathodic corrosion protection.
  • the corrosion protection devices can work, for example, with external current and one or more extraneous anode anodes made of titanium, titanium-clad copper or silver-silver chloride.
  • extraneous anode anodes made of titanium, titanium-clad copper or silver-silver chloride.
  • the use of sacrificial anodes of magnesium, zinc or aluminum comes into question, which provide corrosion protection even without the use of external current.
  • the problem underlying the invention is further solved in a second aspect by a method of the type mentioned above, wherein the support struts are coated before joining with each other with the multilayer protective coating.
  • the manufacturing process is considerably simplified and accelerated. It should be understood that not only the support struts of the support structure are coated with each other before joining the support struts with the multilayer protective coating, but also necessary fasteners, such as nodes, adapter rings, coupling pieces or connecting plates, even before connecting the individual components together with the coated multilayer protective coating. Before the actual assembly of the individual support structure components, it is possible to move them and thus to simplify the application of the multilayer coating. Furthermore, in this production stage, there are still no inaccessible or poorly achievable strut sections whose coating would require considerable additional effort. Furthermore, standardized coating methods and coating routines can be introduced, which further reduce the time and expense. Furthermore, suitable coating sites or structures can be used to perform the coating of the individual components, in particular the support struts before the actual assembly.
  • the application of the outer colored lacquer layer takes place before joining the plurality of support struts together.
  • colored support struts and possibly components for connecting the colored support struts are already provided before the installation of the offshore support structure, so that after assembly or final assembly of the offshore support structure this already has a colored lacquer layer and time-consuming and laborious subsequent coatings not necessary are.
  • the method is further developed according to the invention in that the polymer layer comprises polyurethane or is substantially completely formed of polyurethane and / or the polymer layer comprises plasticizer.
  • the offshore support structure 1 comprises six attachment means 2a, 2b, 2c, 2d, 2e, 2f, by means of which the support structure 1 is anchored to a body of water 4.
  • the six attachment means 2a, 2b, 2c, 2d, 2e, 2f are arranged in a common substantially horizontal plane. Furthermore, the six attachment means 2a, 2b, 2c, 2d, 2e, 2f are arranged equidistant from each other on a circular arc.
  • the fastening means 2a, 2b, 2c, 2d, 2e, 2f are connected via a support section 8 with a receiving device 6.
  • the receiving device 6 is adapted to receive a tower shaft of a wind turbine.
  • the support section 8 has an underwater area 8a and an overwater area 8b.
  • the support portion 8 is formed in this embodiment as a jacket construction and thus has a plurality of truss-like interconnected support struts 10.
  • the support struts 10 or the sections of the support struts 10, which are associated with the underwater area 8a of the support section 8, are arranged below the water surface 9.
  • the support struts 10 and the sections of the support struts 10, which are assigned to the above-water area 8b of the support section 8, are arranged above the water surface 9.
  • the support struts 10 of the underwater area 8a and the above-water area 8b of the support section 8 are coated with a multi-layer protective coating 12.
  • the connecting elements which connect the individual support struts 10 of the underwater region 8a and the overwater region 8b of the support structure to one another, are coated with the multilayer protective coating 12.
  • the multilayer protective coating 12 has a first adhesion promoter layer and an overlying second polymer layer.
  • the polymer layer is substantially completely formed of polyurethane.
  • a primer epoxy resin or adhesive can be used.
  • the individual layers of the multilayer coating 12, ie the adhesion promoter layer and the polymer layer can be applied with a layer thickness in the range from one millimeter to 5 millimeters.
  • the support struts 10 of the above-water area 8b are additionally coated with an outer lacquer layer 14.
  • the outer lacquer layer is likewise applied to the multilayer coating 12 via an additional adhesion promoter layer.
  • the outer lacquer layer 14 has yellow traffic-color pigments, which are formed as inorganic color pigments. The color pigments always retain their optical color effect when exposed to ultraviolet radiation.
  • Fig. 2 shows an embodiment of a multilayer coating 12 on the surface of a support strut 10, which is designed as a steel tube (not fully illustrated).
  • the multi-layer protective coating 12 has two individual layers, namely a first lower adhesion promoter layer 18 and an overlying second polymer layer 20.
  • Suitable adhesion promoters are, for example, epoxy resin or adhesive.
  • the polymer layer may be partially or completely formed of polyurethane, polyethylene or polypropylene. Further, the polymer layer 20 may include plasticizer.
  • an outer lacquer layer 14 is applied.
  • the outer lacquer layer 14 has yellow traffic color pigments, wherein the outer yellow lacquer layer retains its optical color effect even when exposed to ultraviolet radiation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Wind Motors (AREA)
EP14171980.7A 2014-06-11 2014-06-11 Offshore-Fundament für Windenergieanlagen mit mehrschichtiger Beschichtung Active EP2955276B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP14171980.7A EP2955276B1 (de) 2014-06-11 2014-06-11 Offshore-Fundament für Windenergieanlagen mit mehrschichtiger Beschichtung
PL14171980T PL2955276T3 (pl) 2014-06-11 2014-06-11 Fundament offshore turbiny wiatrowej z wielowarstwowym pokryciem
ES14171980.7T ES2694420T3 (es) 2014-06-11 2014-06-11 Cimientos fuera de costa para aerogeneradores con revestimiento multicapa
DK14171980.7T DK2955276T3 (en) 2014-06-11 2014-06-11 Offshore foundation for wind turbines with multilayer coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14171980.7A EP2955276B1 (de) 2014-06-11 2014-06-11 Offshore-Fundament für Windenergieanlagen mit mehrschichtiger Beschichtung

Publications (2)

Publication Number Publication Date
EP2955276A1 EP2955276A1 (de) 2015-12-16
EP2955276B1 true EP2955276B1 (de) 2018-08-08

Family

ID=50927985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14171980.7A Active EP2955276B1 (de) 2014-06-11 2014-06-11 Offshore-Fundament für Windenergieanlagen mit mehrschichtiger Beschichtung

Country Status (4)

Country Link
EP (1) EP2955276B1 (pl)
DK (1) DK2955276T3 (pl)
ES (1) ES2694420T3 (pl)
PL (1) PL2955276T3 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108999754A (zh) * 2018-09-26 2018-12-14 大连君方科技有限公司 一种抗腐蚀海上风电机组及抗腐蚀方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3417569A (en) * 1968-01-25 1968-12-24 William N. Laughlin Protective coating and method
US4415293A (en) * 1982-04-05 1983-11-15 Shell Oil Company Offshore platform free of marine growth and method of reducing platform loading and overturn
US5087154A (en) * 1990-09-17 1992-02-11 Mpt Services, Inc. Coatings and process affording corrosion protection for marine structures
NO320948B1 (no) * 2004-07-01 2006-02-20 Owec Tower As Anordning ved boymomentfattig stagforbindelse
DE202012005538U1 (de) * 2012-06-06 2013-09-09 Maritime Offshore Group Gmbh Offshore-Fundament für Windenergieanlagen mit mehrschichtiger Beschichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DK2955276T3 (en) 2018-11-26
PL2955276T3 (pl) 2019-04-30
ES2694420T3 (es) 2018-12-20
EP2955276A1 (de) 2015-12-16

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