Anode Retainer for Cathodic Corrosion Protection Devices of Foundation Pipes of Offshore Wind Turbines, Foundation Pipe of an Offshore Wind Turbine and Connecting Structure Therebetween, Cathodic Corrosion Protection Device for Foundation Pipes of Offshore Wind Turbines, and Offshore Wind Turbine

Abstract

The invention relates to an anode retainer for cathodic corrosion protection apparatuses of foundation pipes of offshore wind turbines, comprising: a metal cylinder ring having a longitudinal axis and an outside and an inside, wherein a plurality of positioning devices for concentrically self-positioning, in particular without tools, and fixing, in particular in a force-closed manner, the cylinder ring on a foundation pipe under gravity while interacting with corresponding positioning projections located on the outside of the foundation pipe is provided on the inside or the cylinder ring over the circumference, to a foundation pipe of an offshore wind turbine, characterized in that a plurality of positioning projections is provided on the outside of said foundation pipe over a cylinder ring area and a connecting structure therebetween, to a cathodic corrosion protection device for foundation pipes of offshore wind turbines, and to an offshore wind turbine having the same.

1 . An anode retainer for a cathodic corrosion protection device of a foundation pipe of an offshore wind power plant, the foundation pipe having a foundation pipe outside and positioning projections located on the foundation pipe outside, said anode retainer comprising:
 a metallic cylinder ring, said metallic cylinder ring having a longitudinal axis, a cylinder ring outside, and a cylinder ring inside, said cylinder ring inside having a periphery;   a plurality of positioning means positioned around said periphery of said cylinder ring inside; and   said positioning means being positioned for concentric self-positioning and fixing of said cylinder ring on the foundation pipe under the effect of gravity while interacting with corresponding positioning projections located on the foundation pipe outside.   
     
     
         2 . The anode retainer of  claim 1  wherein said positioning means allow tool-free concentric self-positioning of said cylinder ring on the foundation pipe. 
     
     
         3 . The anode retainer of  claim 1  wherein said positioning means allow force-locking fixing of said cylinder ring on the foundation pipe. 
     
     
         4 . The anode retainer of  claim 1  wherein said cylinder ring has a cylinder ring outside, said cylinder ring outside having an essentially non-electrically-conductive coating. 
     
     
         5 . The anode retainer of  claim 1  wherein said cylinder ring ( 30 ) has a cylinder ring outside, said cylinder ring outside having passage holes. 
     
     
         6 . The anode retainer of  claim 1  wherein said positioning means are formed by guide plates positioned on said cylinder ring inside. 
     
     
         7 . The anode retainer of  claim 1  wherein said positioning means comprise tapering guide paths. 
     
     
         8 . The anode retainer of  claim 1  further comprising:
 said positioning means comprising a plurality of tapering guide paths, said guide paths having narrow ends, said guide paths being positioned on said cylinder ring inside; and 
 a fit for a said corresponding positioning projection on the foundation pipe is positioned at said narrow ends of said guide paths. 
 
     
     
         9 . A foundation pipe of an offshore wind power plant comprising, said foundation pipe comprising:
 a longitudinal axis:   a foundation pipe outside and a cylinder ring region; and   a plurality of positioning projections, said positioning projections being positioned on said foundation pipe outside, said positioning projections being further positioned over said cylinder ring region.   
     
     
         10 . The foundation pipe of  claim 9  wherein said plurality of positioning projections are arranged in a first plane and in a second plane in a longitudinal direction of said foundation pipe. 
     
     
         11 . The foundation pipe of  claim 9  wherein said positioning projections positioned in a first plane are offset in relation to said positioning projections in a second plane in a peripheral direction. 
     
     
         12 . The foundation pipe of  claim 9  wherein said at least one of said positioning projections comprises, in said second plane, a stop surface, said stop surface being perpendicular to said longitudinal axis of said foundation pipe. 
     
     
         13 . A cathodic corrosion protection device for a foundation pipe of an offshore wind power plant, the foundation pipe having a foundation pipe outside and positioning projections located on the foundation pipe outside, said cathodic corrosion protection device comprising:
 an anode retainer, said anode retainer having a metallic cylinder ring, said metallic cylinder ring having a longitudinal axis, a cylinder ring outside, and a cylinder ring inside, said cylinder ring inside having a periphery, a plurality of positioning means positioned around said periphery of said cylinder ring inside, and said positioning means being positioned for concentric self-positioning and fixing of said cylinder ring on the foundation pipe under the effect of gravity while interacting with corresponding positioning projections located on the foundation pipe outside;   at least one anode arranged on said anode retainer; and   a protective current unit, said protective current unit being connected between said at least one anode and the foundation pipe for positive charging of said at least one anode and for negative charging of the foundation pipe.   
     
     
         14 . The cathodic corrosion protection device of  claim 13 , wherein a corrosion state detection device is provided for automatic corrosion state detection of the foundation pipe. 
     
     
         15 . The cathodic corrosion protection device of  claim 13 , wherein said protective current unit provides automatic corrosion state detection, control of said protective current unit being in dependence upon the results of corrosion state detection through said protective current unit. 
     
     
         16 . An offshore wind power plant comprising:
 at least one foundation pipe, said foundation pipe having a foundation pipe outside and positioning projections located on said foundation pipe outside;   a cathodic corrosion protection device, said cathodic corrosion protection device having an anode retainer, said anode retainer having a metallic cylinder ring, said metallic cylinder ring having a longitudinal axis, a cylinder ring outside, and a cylinder ring inside, said cylinder ring inside having a periphery, a plurality of positioning means positioned around said periphery of said cylinder ring inside, and said positioning means being positioned for concentric self-positioning and fixing of said cylinder ring on said foundation pipe under the effect of gravity while interacting with corresponding positioning projections located on said foundation pipe outside;   at least one anode arranged on at least one said anode retainer; and   a protective current unit, said protective current unit being connected between said at least one anode and said foundation pipe for positive charging of said at least one anode and for negative charging of said foundation pipe.   
     
     
         17 . The offshore wind power plant of  claim 16  further comprising a corrosion state detection device for automatic corrosion state detection of said foundation pipe. 
     
     
         18 . The offshore wind power plant of  claim 16 , wherein said protective current unit provides automatic corrosion state detection, control of said protective current unit being in dependence upon the results of corrosion state detection through said protective current unit. 
     
     
         19 . The offshore wind power plant of  claim 16 , wherein said cathodic corrosion protection device comprises for each said foundation pipe a single anode retainer. 
     
     
         20 . The offshore wind power plant of  claim 16 , wherein said cathodic corrosion protection device comprises for each said foundation pipe a plurality of anode retainers. 
     
     
         21 . The offshore wind power plant of  claim 16 , wherein said cathodic corrosion protection device comprises for each said foundation pipe at least one anode retainer. 
     
     
         22 . An offshore wind power plant comprising:
 an anode retainer and a foundation pipe;   said foundation pipe having a foundation pipe outside and positioning projections located on said foundation pipe outside;   said anode retainer having a metallic cylinder ring, said metallic cylinder ring having a longitudinal axis, a cylinder ring outside, and a cylinder ring inside, said cylinder ring inside having a periphery;   a plurality of positioning means positioned around said periphery of said cylinder ring inside; and   said anode retainer being arranged concentrically around said foundation pipe, said positioning projections of said foundation pipe being fixed in said positioning means of said anode retainer.   
     
     
         23 . The offshore wind power plant of  claim 22  further comprising a connecting structure between said foundation pipe and said anode retainer. 
     
     
         24 . The offshore wind power plant of  claim 22  wherein said positioning projections of said foundation pipe are fixed in said positioning means of said anode retainer in a force-locking manner.