Grid type reinforcing structure

Abstract

The invention relates to a grid type reinforcing structure of a cabin cover of a large wind power generator set, comprising a shell plate of the cabin cover, an inner core of a reinforcing rib, a cross connection block, resin guiding tubes and a diversion band. A light sandwich layer is arranged between an outer plate and an inner plate; a grid-shaped diversion layer, the inner core of the reinforcing rib and the cross connection block are arranged on the upper surface of the light sandwich layer; cutting bottoms are provided with square slots; the resin guiding tubes are arranged in the square slots; and a surface coating is coated on the surface of the outer plate. The outer plate and a reinforcing frame are simultaneously formed by a vacuum assistant forming (AVRI) technology, thereby largely simplifying the production technology. The cabin cover with the structure has the characteristics of high integrity, thorough immersion, dense structure, high strength, good rigidity, one-stepformation and the like. The grid type reinforcing structure can be widely used for the cabin cover of the large wind power generator set and similar large thin shell products.

Description

technical field [0001] The invention relates to the field of wind power generation devices, in particular to a mesh-type reinforced structure of a fiberglass nacelle cover. Background technique [0002] According to authoritative reports, in 2009 my country's new wind power installed capacity will reach 15,000 MW (output value RMB 100 billion, equivalent to about 10,000 1.5 MW units). Among the new wind power equipment, most of them are large wind power generators (≥1.5MW) with high wind energy utilization rate and low power generation cost. With the improvement of wind power technology and the rapid expansion of market demand, the trend of large-scale wind power equipment has been promoted, thereby accelerating the pace of design improvement, process innovation and cost reduction of its main components. As the main component of wind power equipment, the nacelle cover has gradually evolved from the initial metal frame + aluminum alloy skin type to FRP (Fiberglass Reinforced...

AI Technical Summary

Problems solved by technology

Chinese Patent Publication No.: CN 101412286A, discloses a "vacuum introduction manufacturing method" for "nacelle cover with smooth surface", this invention does not involve the parting of the nacelle cover and the structural design of the shell plate

Due to the different working conditions of the hull and the nacelle cover, the overall structural strength of the current nacelle cover is generally excessive, while the rigidity of the shell plate is relatively insufficient; at the same time, the relatively simple hand lay-up process cannot meet the needs of large wind turbines for FRP. Strict requirements for technical and economic indicators such as stiffness, dimensional accuracy, quality consistency, rapid production and cost reduction of the nacelle cover

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