Split type hoisting method for 5MW land type wind generating set

Abstract

The invention discloses a split type hoisting method for a 5MW land type wind generating set. According to the method, a cabin is hoisted in a split mode, and split into a cabin body, a generator, a maintenance crane and a top housing according to the weight and the boundary dimension of all parts of the cabin and the hoisting capacity of a main hoisting machine; after the cabin is split, software is utilized for analyzing and recalculating the gravity center position to adjust the design of a hoisting sling, and therefore the level and the safety of cabin hoisting are ensured. The main hoisting machine is utilized for sequentially installing the cabin body and the generator in place and sequentially installing the maintenance crane and the top housing in place. According to a general scheme, a 1600t crawler crane is needed when a whole hoisting scheme is adopted for a 5MW fan, while by means of the implementation of the method, the construction requirement can be met by adopting a 1000t crawler crane, and therefore the construction cost is effectively saved.

Description

technical field [0001] The invention relates to the technical field of installation methods for 5MW land-based wind power generators, and specifically relates to a component hoisting method for 5MW land-based wind power generators. Background technique [0002] The 5MW wind turbine is a brand-new ultra-large wind turbine with a rated power of 5000KW / h. It adopts a variety of advanced technologies such as electric independent pitch, active yaw, and variable speed double-fed. It can operate at low wind speeds. It can use wind energy resources more effectively than conventional units, and has a very good promotion prospect. However, the overall weight of the wind turbine is nearly 1,000 tons (the weight of the cabin is about 300t, the weight of the impeller is about 130t, and the weight of the tower is about 600t), and the installation height exceeds 150m, so the hoisting construction is very difficult. [0003] The generator set is the heaviest and highest part of the wind tu...

AI Technical Summary

Problems solved by technology

Before the generator set was hoisted in an integral way, the requirements for the specifications of the required hoisting machinery were large, and there were problems such as few mechanical resources, high site requirements, high construction costs, and difficult control of safety risks. In order to solve the above problems, we have improved the traditional hoisting process of generator sets and invented the split hoisting technology of wind turbines.

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