An offshore hoisting method for an ultra-compact two-bladed wind turbine

Abstract

The invention discloses a maritime hoisting method of an ultra-compact two-blade wind power generator unit. According to the method, a blade and a wheel hub are assembled into an impeller on a boat; then, the impeller is in abut assembly with a host machine on the boat; after tower tube hoisting is completed, the impeller and the host machine are integrally hoisted to a proper position in one step and are connected with a tower tube. The maritime hoisting method has the core of using the maritime territory condition, the host machine and a wheel hub system of an ultra-compact wind power generator are connected and are then integrally hosted; next, the butt joint is performed with the tower tube. The hoisting scheme has high safety; the hoisting period is short; the construction site is sufficient; the problems of long hoisting period, transportation inconvenience and high risk of the wind power generator unit can be effectively solved; meanwhile, the hoisting cost of a wind power plant can be greatly reduced; the hoisting accident rate is reduced.

Description

Technical field [0001] The invention relates to the technical field of hoisting an ultra-compact two-blade wind power generator set, in particular to an offshore hoisting method of an ultra-compact two-blade wind power generator set. Background technique [0002] In the current world wind power field, wind turbines are generally of three-blade type. Due to the limitation of the number of blades and hoisting technology, three-blade wind turbines can only be hoisted by lifting, that is, after the assembly of the blades and the hub is completed, The auxiliary crane holds a blade facing downwards, and the main crane can slowly lift the impeller. This hoisting method has a large area, a long period, a large number of equipment, tools and spreaders involved, and the safety is also poor. [0003] The reasons for the long on-site hoisting cycle, complex construction and high cost of three-blade wind turbines are as follows: [0004] 1. Reasons for fan structure [0005] 1.1. The three-blade...

AI Technical Summary

Problems solved by technology

It takes a lot of time to assemble the three blades, usually 5 to 6 hours; the impeller also occupies a large area on the construction site. When hoisting, in order to avoid damage to the blade caused by the tip of the blade touching the ground, it is necessary to use a crane to support the lower part of the blade. blades, so the entire hoisting of the impeller system takes a long time

[0007] The complexity of the fan structure above results in a long net hoisting period and many man-hours on site, which increases the hoisting cost

[0008] 2. The reason for the construction site

On-site hoisting of wind turbines on land is generally affected by terrain and surrounding obstacles, which will increase the time for adjusting the direction and position of components such as the main engine and hub, and will also increase the time and cost of transport vehicles entering and leaving

In combination, the hoisting period becomes longer

[0010] 2.2. The hoisting on land will cause overturning and inconvenient vehicle entry and exit due to complex terrain and rough roads, so that the safety of the hoisting of the fan cannot be guaranteed

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