Brake cylinder of wind power unit and manufacturing method thereof

Abstract

The invention belongs to the technical field of wind power equipment and particularly relates to a brake cylinder of a wind power unit and a manufacturing method thereof. The brake cylinder of the wind power unit is made of low-temperature high-toughness anticorrosion nodular cast iron material QT350-22 Al by casting. The low temperature impact resistance and corrosion resistance of brake cylinder made of the low-temperature high-toughness anticorrosion nodular cast iron material are improved, and the using requirements under severe work conditions are increased and met, so that service life of the wind power unit is further prolonged, and production cost is saved effectively. A blank of the brake cylinder of the wind power unit is made by casting, so that internal quality problems of the cylinder can be solved effectively. In addition, the problems high processing amount and low processing efficiency can also be solved, product cost can be lowered evidently, and economic benefit is huge.

Description

technical field [0001] The invention relates to the technical field of wind power equipment, in particular to a brake cylinder of wind power equipment and a manufacturing method thereof. Background technique [0002] With the development of the global economy, energy and environmental issues have become the main issues facing the global sustainable development, which has increasingly attracted widespread attention from the international community and the search for positive countermeasures. Wind energy is an inexhaustible and inexhaustible energy. Renewable, pollution-free green energy has become the energy goal of all countries. The large-scale development and utilization of wind energy will effectively reduce the use of fossil energy, reduce room temperature gas emissions, and protect the environment. Vigorously developing wind power has become an important choice for governments of all countries. In addition, due to its simple use and flexible characteristics, it has bec...

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Problems solved by technology

In addition, my country's wind turbines are generally installed in high mountains, wastelands, islands, etc., and are often affected by irregular, changing directions, variable load winds and strong gusts of wind.

[0006] (2) Long equipment maintenance period: Wind power equipment is erected and operated at high places, and the equipment is not convenient for frequent maintenance. The maintenance period determined during equipment design is usually 20 years, or even 30 years

[0007] Considering the working conditions and structural characteristics of wind power equipment, ordinary nodular cast iron can no longer meet the performance requirements of wind power equipment, and is not suitable for the production of wind power accessories. Low temperature, high toughness and corrosion resistant nodular cast iron with high technical content must be selected. To ensure the safety of wind power accessories

The brake cylinder, as a key component of wind power equipment, is a small-volume, large-section ductile iron casting with a maximum wall thickness of 110mm. , its structure is more complex, which increases the difficulty of manufacturing

At present, the brake cylinders of wind power equipment widely used at home and abroad are mainly welded with steel plates, and the overall structural stability is poor; the internal stress after welding is high, and it is easy to deform; the material is easy to become brittle, which endangers safety; The mechanical properties and corrosion resistance of welded joints are reduced due to other reasons; in addition, the blank structure of steel plate cutting and forging is simple, so that the processing volume of the brake cylinder is large, labor-intensive, time-consuming, inefficient, and the manufacturing cost is high. The competitiveness is not strong, especially for some hole systems, which cannot or cannot be made more economically, and the processing volume will be larger and more time-consuming

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