摘要:
A wind turbine rotor (108) includes a first portion (160) of a shaft (134) fabricated from a first steel alloy having a first strength property value. The wind turbine rotor also includes a second portion (170) of the shaft fabricated from a second steel alloy having a second strength property value. The first strength property value is greater than the second strength property value. The second portion of the shaft is welded to the first portion of the shaft.
摘要:
A tubular support structure 100 is provided including a plurality of tubular sections 96 employing a plurality of flangeless joints 90 for a wind turbine tower 105. The flangeless joints 90 incorporate finger plates assemblies 120 for connecting adjacent tubular sections 96, The finger plate assemblies 120 may be uniformly distributed around the periphery of the adjacent tubular sections 96. The tubular sections may be combined to provide wind turbine support tower 105.
摘要:
A wind turbine tower (100) employing fingerplate assemblies (510) on a flangeless joint (500) between adjacent tubular tower sections (140). Means for stiffening the wind turbine tower includes a limited intercan gap (28) between adjacent tubular tower sections (140) at the flangeless joint (500) and selecting a number of fingerplate assemblies (510) to fasten each flangeless joints (500) to limit distortion. Selecting optimum dimensions (520), (530), (535) for the fingerplates (540) may further minimize localized tower distortion. A material for the fingerplate (540) with a lower Young's modulus than a material for the tubular section results in reduced localized tower distortion. Attaching a coverplate (620) to a top tubular section limits tip displacement for the tower. The coverplate (620) may include backing stiffeners (690) and be comprised of a material with a high Young's modulus relative to the Young's modulus for the fingerplates (540).
摘要:
A cobalt-based braze alloy composition comprises: 22 to 24.75% chromium by weight; 9 to 11 % nickel by weight; 6.5 to 7.6% tungsten by weight; 3 to 4% tantalum by weight; 0.55 to 0.65% carbon by weight; 0.3 to 0.6% zirconium by weight; 0.15 to 0.3% titanium by weight; 1.5 to 2.6% boron by weight; 1 to 10% silicon by weight; and cobalt.
摘要:
A method (200) of fabricating a machine component is provided. The method includes preparing (202) at least a portion of a surface (114) of a machine component for receiving a sintered preform. The method also includes forming (204) a pre-sintered preform hybrid hardface mixture that includes combining a predetermined portion of at least one hardfacing material with a predetermined portion of at least one brazing material. The method further includes forming (206) a pre-sintercd preform. The pre-sintered preform has predetermined dimensions. The method also includes forming (208) the sintered preform and positioning (210) the sintered preform on the machine component. The method further includes fixedly (212) coupling the sintered preform to at least a portion of the machine component via brazing.
摘要:
A component for wind turbines includes cast austempered ductile iron containing about 3.0 to about 3.8 weight percent carbon, about 1.9 to about 2.8 weight percent silicon, up to about 0.3 weight percent manganese, up to about 0.8 weight percent copper, up to about 2.0 weight percent nickel, up to about 0.3 weight percent molybdenum, about 0.03 to about 0.06 weight percent magnesium, less than about 0.05 weight percent chromium, less than about 0.02 weight percent vanadium, and less than about 0.01 weight percent sulfur. The component is preferably a drive shaft or gearbox component having a mass of more than about 3 tons. A method of manufacturing the component is also provided.
摘要:
A nacelle (106) for a wind turbine generator (100) is provided. The nacelle (106) includes a spaceframe (160,260) including at least one exterior panel (180) and at least one interior panel (182) joined to the exterior panel, each of the exterior and interior panels having a plurality of generally U-shaped channel portions with flanges extending outward from the channel portion, the flanges (186) of the exterior panel being joined to the flanges of the interior panel to define a plurality of ribs (264), a plurality of joints (266), and a plurality of openings (268).