WIND-ELECTRIC POWER PLANT Russian patent published in 1997 - IPC

FIELD: wind-electric power engineering; power plants generating electricity in low-speed wind currents. SUBSTANCE: wind-electric power plant has tower, nacelle with supporting and turning gear, windwheel with shaft passed inside nacelle, frame with longitudinal girder and nacelle-mounted step-up gear with slow-speed input shaft coupled with large gear, engageable coupling, and generator. Plant has dispensing unit is the form of single multiflow dispensing step-up gear incorporating slow-speed input shaft with large central gear and sets of high-speed output shafts with small gears mounted on periphery relative to longitudinal axis of windwheel at distance depending on radius of large input gear and radii of small output gears, and coupled with mechanisms and units, each forming several energy flows whose longitudinal axes are inscribed in edges of rectangular prism set in parallel to windwheel axis; frame is multitier modular structure formed by set of longitudinal parallel beams rigidly fixed together by cross upright; frame is U-shaped as viewed from top and has recess in base center; mechanisms and units forming energy flows are arranged on frame in separate rows forming service passage inside nacelle between flows; service passage communicates through frame recess with tower interior; they also form peripheral passages between energy flows and nacelle walls. Windwheel shaft inside nacelle is mounted in front part of power frame between windwheel and step-up gear by means of power assembly built up of two bearing supports spaced apart towards power flanges of windwheel shaft. Front flange of windwheel shaft has guides and joining assemblies to secure windwheel hub. Multitier modular frame is U-shaped in each tier for even number of energy flows and L-shaped for odd number of energy flows; it has manhole made on site according to central recess. Central and peripheral passages are closed at bottom with removable floor and on top, with nacelle ceiling; cross dimensions of central servicing passage depend on diameter of large central gear and on cross dimensions of mechanism and units forming separate energy flows; diameter of central gear is chosen so as to ensure enough space for passing servicing personnel. Cross dimensions of peripheral passages should be large enough to allow attending personnel to easily move during servicing procedures. EFFECT: improved design. 12 cl, 5 dwg