Wind power tower cylinder transition section cylinder section with replaceable pre-stressed anchor bolts

Abstract

The invention discloses a wind power tower cylinder transition section cylinder section with replaceable pre-stressed anchor bolts. The wind power tower cylinder transition section cylinder section comprises a cylinder section body and a pre-stressed anchor bolt assembly. The prestressed anchor bolt assembly comprises a plurality of prestressed anchor bolt holes (2), prestressed tendon holes (3) and cylindrical holes (9) which are reserved in the cylinder section body at intervals, an upper flange (5) pre-buried at the top of the cylinder section body, a lower flange (6) pre-buried in the cylinder section body, a plurality of prestressed anchor bolts (7) and a plurality of first fixing pieces (8) arranged on the bottom surface of the lower flange at intervals. The prestressed tendons of a lower concrete cylinder section are inserted into the prestressed tendon holes, and an upper steel cylinder section is fixed to the cylinder section body through the prestressed anchor bolts. According to the invention, split prefabrication of the transition section cylinder section of the concrete tower cylinder can be achieved, the stress performance of cylinder piece splicing can meet the design requirement, and the manufacturing and transportation cost is reduced; and meanwhile, the pre-stressed anchor bolts can be replaced, so that a fan can always operate at designed power, and long-term safe operation of the wind power tower cylinder is ensured.

Description

technical field [0001] The invention relates to a concrete tower of a wind power generating set, in particular to a tube section of a transition section of a wind power tower with replaceable prestressed anchor bolts. Background technique [0002] As a clean energy technology, wind power has been widely used in the "Three North" regions with better wind resources in my country. With the development of the "Three Norths" region becoming increasingly saturated, wind power is developing in inland areas. Due to the low wind speed in inland areas and the increasing power of wind turbines, the diameter of the wind rotor is getting larger and the height of the tower is getting higher and higher. At present, the tower height of domestic onshore wind turbines is Already reached 120-160m. [0003] As the tower increases, the rigidity of the traditional steel tower is low, and the tower is prone to resonance, which will lead to damage. At present, the steel-concrete mixed tower stru...

AI Technical Summary

Problems solved by technology

However, the service life of wind turbines is long and needs to reach about 20 years. Environmental factors such as stress fatigue, rainwater and other environmental factors lead to corrosion, manufacturing quality factors and other reasons may lead to the failure of some or even all prestressed anchor bolts. The stress anchors cannot be replaced, and the force on the tower can only be reduced by reducing the power of the fan, so that the prestressed anchors that have not failed can meet the safe power generation requirements of the unit, resulting in lower and lower power generation efficiency of the unit, and there are Bigger security risk

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