Pre-stress steel-concrete tower cylinder for wind turbine generator

Abstract

The invention provides a pre-stress steel-concrete tower cylinder for a wind turbine generator. The pre-stress steel-concrete tower cylinder comprises a top steel tower cylinder body, a concrete towercylinder body and a bottom disc-shaped foundation, wherein the concrete tower cylinder is formed by vertically connecting multiple circular truncated cone-shaped prefabricated tower cylinder sections, and the segmented mode is horizontal segmentation; each tower cylinder section is formed by annularly connecting multiple arc-shaped prefabricated concrete sheets, and the fragment mode is a vertical fragment, and after the tower cylinder sections are spliced into a ring, a section-by-section hoisting mode is adopted for staggered joint installation; through an external pre-stress steel strand,the steel tower cylinder body, the concrete tower cylinder body and the bottom disc-shaped foundation are connected; and a concrete tower cylinder conversion section is arranged at the top of the concrete tower cylinder body, the concrete tower cylinder conversion section and the steel tower cylinder section are also connected through a bolt assembly, the wall thickness of the tower cylinder of the concrete tower cylinder conversion section is gradually reduced in a transition mode according to a certain ratio, the wall thickness of the top end surface is guaranteed to be obviously larger thanthe wall thickness of a cylinder body, and the external pre-stress steel strand penetrates through the concrete tower cylinder conversion section and then enters the inner space of the concrete towercylinder body. The pre-stress steel-concrete tower cylinder has the advantages that design is reasonable, construction is simple, transportation is convenient, connection is firm, manufacturing costis low, and construction can be carried out in batches.

Description

Technical field [0001] The invention belongs to the technical field of prestressed mixing towers of wind turbines in high towers and low wind speed areas, and particularly relates to a prestressed mixing tower with a conventional steel tower at the upper part and a prefabricated prestressed concrete tower at the lower part. Background technique [0002] At present, most of my country’s traditional wind turbine support structures use steel conical towers. However, with the rapid development of my country’s wind power industry, the single unit capacity of wind turbines is increasing. In order to effectively utilize wind energy resources in low wind speed areas, wind power The unit has gradually developed to large-scale and high-altitude, and the requirements for the height and rigidity of the matching hub are increasing. When the height of the hub exceeds 100m, the diameter of the bottom section of the traditional conical steel tower will exceed the size limit of conventional road t...

AI Technical Summary

Problems solved by technology

Cast-in-situ concrete towers have limitations such as complex construction, long maintenance period, cumbersome disassembly of formwork, and difficulty in ensuring the quality of concrete construction, making it difficult to meet the batch and process-oriented construction requirements of large-scale wind turbines

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