Engine room cover of ultra-large type wind driven generator

Abstract

The invention relates to an engine room cover of an ultra-large type wind driven generator. The engine room cover comprises an engine room cover body; the engine room cover body is formed by connecting a left cover body and a right cover body which are symmetrical; a connecting part between the left cover body and the right cover body is fixed through bolts; the left cover body and the right cover body are respectively formed by connecting four or six sub-cover bodies; the connecting parts of the sub-cover bodies are fixed through the bolts; skeletons arranged on the sub-cover bodies are connected through the bolts at the end surfaces of flanges; the engine room cover body and an engine room of the wind driven generator are fixed through connection landing legs arranged on the engine room cover body; and a sealant is smeared on joints between the left cover body and the right cover body and joints between every two sub-cover bodies for sealing the cover body. The engine room cover provided by the invention has the advantages that the engine room cover is more reasonable in structural design, convenient and fast to maintain, greatly improves the efficiency of replacing spare parts of a machine set and simultaneously solves the transportation difficult problem caused by the large-scale machine room cover, and the reasonable installment and connection mode of the sub-cover bodies also ensure the integral strength of the machine room cover.

Description

technical field [0001] The invention relates to a nacelle cover of a wind power generator, in particular to a nacelle cover of an ultra-large wind power generator. Background technique [0002] With the development of the new energy industry, wind energy, which was developed earlier in the new energy, occupies an increasing proportion in the power grid. In order to more effectively improve the efficiency of wind energy utilization, it is inevitable for wind turbines to develop to a large capacity; the nacelle cover, which is the "protective shell" of the fan nacelle, is also undergoing structural changes and improvements as the unit becomes larger. [0003] The nacelle cover of the wind turbine is generally used to protect the machinery and motor components in the nacelle, and is also a safety barrier for maintenance personnel working at heights. The nacelle cover should have a good aerodynamic shape and reasonable and convenient entry and exit hatches; in order to facilit...

AI Technical Summary

Problems solved by technology

At present, the nacelle cover of domestic wind turbines below 3MW is usually composed of left and right covers, upper and lower covers, and has a good aerodynamic shape, but such a structure is usually not convenient for the replacement of internal parts of the nacelle, especially the replacement of large parts; With the development of large-scale wind turbines, if the original structural design continues to be used to manufacture the cover, the long-distance transportation of the cover will become an inevitable problem, and when the important parts in the nacelle are replaced, the nacelle cover needs to be removed. The operating efficiency of the fan is greatly reduced; with the development of large-scale wind turbines, it is urgent to design a new type of nacelle cover that can not only meet the requirements of aerodynamic shape and strength, but also facilitate the entry and exit of the nacelle and is suitable for long-distance transportation

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