Lower portion laminate prefabricated hybrid tower frame of wind power generator

Abstract

The invention relates to a lower portion laminate prefabricated hybrid tower frame of a wind power generator. A prestress concrete tower is arranged on the lower portion of the tower frame, and a steel tower drum is arranged on the upper portion of the tower frame. Embedded flange parts are embedded in the inner walls of prefabricated laminate units and edges of longitudinal joints, and every two adjacent units are connected with high-strength bolts. An annular groove is embedded in the outer wall of each prefabricated laminate unit every a certain distance, annular prestress cables are arranged in the annular grooves, and the annular grooves are filled with filling materials. After the annular prestress cables are tensioned, the laminate units are connected into a whole through cooperation of the annular prestress cables and the high-strength bolts on the inner walls. A lower portion laminate prefabricated prestress concrete section is temporarily fixed through a tool truss and adjusted when being installed. The tool truss is composed of a stand column and web members. A flange plate is arranged at the bottom of the tool truss and corresponds to a foundation embedded part embedment adjusting means. A platform is arranged on the top of the tool truss and serves as an operating platform in the installation stage. According to the lower portion laminate prefabricated hybrid tower frame of the wind power generator, a reinforced concrete structure with high rigidity is fully utilized for resisting high loads on the lower portion, and the prestress concrete structure has the characteristics of long anti-fatigue life, high damping ratio, great durability and the like.

Description

technical field [0001] The invention belongs to the technical field of wind turbine tower structures, and in particular relates to a prefabricated mixed tower with lower sections of wind turbines. Background technique [0002] my country is very rich in low wind speed resources, and the available low wind speed resource area accounts for about 68% of the country's wind energy resource areas, and they are all close to the grid load areas. The market prospect is broad. According to the latest evaluation results of the Bureau of Meteorology, the wind resources in the central, eastern and southern regions where the wind speed is above 5 m / s can reach economic development value can be developed close to 900GW. In the 12th Five-Year Plan, the installed capacity of 100 million kilowatts of wind power is targeted, and 20 million kilowatts of it belongs to the development of low wind speed wind power. [0003] The key to developing low wind speed resources is to increase the height ...

AI Technical Summary

Problems solved by technology

[0003] The key to developing low wind speed resources is to increase the height of the tower and increase the diameter of the impeller. Traditional all-steel towers applied to 120m and higher towers have disadvantages such as poor economy, low rigidity, large tower vibration, and affecting the normal operation of the unit.

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