US2009036334A1PendingUtilityA1

Use of ionic liquids for the lubrication of components in wind power plants

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Assignee: SCHWAB PETERPriority: Aug 3, 2007Filed: Aug 1, 2008Published: Feb 5, 2009
Est. expiryAug 3, 2027(~1 yrs left)· nominal 20-yr term from priority
Inventors:Peter SchwabStefan KempkaRené HänselAndreas HoffAxel Kobus
C10M 105/60C10M 2203/1006C10M 105/72Y02E10/72C10N 2030/02C10M 2223/041C10N 2040/04C10M 105/56C10N 2020/077C10M 105/70C10N 2030/06F16C 33/6688C10M 2205/0285F03D 80/70C10N 2020/02C10M 171/00
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Claims

Abstract

The invention relates to the use of lubricants containing at least one ionic liquid as lubricants in components of a wind power plant.

Claims

exact text as granted — not AI-modified
1 . A method of lubricating components of a wind power plant, comprising applying a lubricant between surfaces of the components, wherein the lubricant comprises at least one ionic liquid. 
     
     
         2 . The method according to  claim 1 , wherein the component of the wind power plant is a main or tracking gearbox for gearing up the rotational speed of the rotor to the rotational speed of the generator. 
     
     
         3 . The method according to  claim 1 , wherein the component of the wind power plant is an azimuthal gearbox for tracking the wind direction. 
     
     
         4 . The method according to  claim 1 , wherein the component of the wind power plant is a pitch gearbox for adjusting the rotor blades. 
     
     
         5 . The method according to  claim 1 , wherein the component of the wind power plant is a generator bearing for mounting the generator shaft. 
     
     
         6 . The method according to  claim 1 , wherein the component of the wind power plant is a pitch bearing for mounting the rotor blades. 
     
     
         7 . The method according to  claim 1 , wherein the component of the wind power plant is a main bearing for mounting the rotor. 
     
     
         8 . The method according to  claim 1 , wherein the component of the wind power plant is an azimuthal bearing for providing the rotatable connection between tower and pod of the wind power plant. 
     
     
         9 . The method according to  claim 1 , wherein the lubricant contains EP additives. 
     
     
         10 . The method according to  claim 1 , wherein the lubricant contains corrosion inhibitors. 
     
     
         11 . The method according to  claim 1 , wherein the lubricant contains one or more further lubricating materials in addition to at least one ionic liquid. 
     
     
         12 . The method according to  claim 1 , wherein the proportion of ionic liquids in the lubricant is from 0.1 to 99.98% by weight, based on the lubricant. 
     
     
         13 . The method according to  claim 1 , wherein the lubricant comprises exclusively one or more ionic liquid(s) as lubricating material. 
     
     
         14 . The method according to  claim 1 , wherein the ionic liquid used has a melting point of <50° C. 
     
     
         15 . The method according to  claim 1 , wherein the ionic liquid used is liquid at a temperature of from −85° C. to 400° C. 
     
     
         16 . The method according to  claim 1 , wherein the ionic liquid used has a decomposition temperature of >200° C. 
     
     
         17 . Wind power plant comprising at least one component having movable elements and a lubricant, characterized in that the lubricant contains an ionic liquid.

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