According to statistics, in 2010, China's newly installed capacity of wind power exceeded 16 million KW, ranking the first in the world. As of the end of 2010, the total installed capacity of wind power in China had exceeded 41.827 million KW, which was almost equal to that of the United States; at the end of 2009, this figure was only 25 million KW. From 2006 to 2009, the installed capacity of wind power in China has doubled for four consecutive years.
In recent years, the wind power industry has experienced explosive growth. Not only does existing wind power companies rapidly expand production capacity, but investors outside the industry have also proposed to enter the wind power industry.
However, wind power itself has "congenital deficiency", subject to the dual constraints of natural conditions and market risks, instability, high prices, and transmission distance, but also make wind power in the market lack of competitiveness. In the process of negotiations with the big power grid, wind power companies are also in a weak position and have little right to speak. If wind power naturally develops, its fate can be imagined. Therefore, to make wind power play an important role in reducing emissions and developing new energy sources, policy support for increasing support is indispensable, and the efforts of wind turbine generators are also indispensable.
China has the world's largest wind power market. After several years of development, it has also laid a good foundation, and it is entirely possible to spawn a local, world-renowned wind turbine manufacturing company. China's wind power industry already has the advantage of “benefiting from time to timeâ€. At the same time, we can also set up a technical standard system that suits China’s national conditions through the observation and statistical analysis of the national wind conditions and environmental parameters, form a technical threshold, transform into a powerful technology country, and thus dominate the development trend of wind power technology in the world.
As countries compete to develop new energy technologies, whoever gains advantages in strategic competition for new energy will be able to act as the “leader†of technological innovation, the “loton†of economic development, and the new international in the next industrial revolution. The standard setter.
The high-strength fasteners used in wind power are required to have strong stability due to long-term field service, poor environment, and poor maintenance conditions. Under normal continuous working conditions, wind power fasteners must ensure a service life of more than 15 years. Most of the high-strength bolts for wind power are 10.9, with a small amount of 8.8. 10.9 high-strength bolts, the hardness value of 32 ~ 39HRC, tensile strength Rm ≥ 1040MPa, elongation after breaking A ≥ 9%, the area of ​​contraction rate Z ≥ 48%, low temperature impact strength (-45 °C) KV2 ≥ 27J.
The high-strength bolts used in wind turbines are used as the connecting parts of the main engine, blades, towers, and reduction gearboxes. They are responsible for the basic performance and basic functions of the components together with the main engine; they mainly include the following types:
a. Tower bolts: bolts used on towers of wind turbines are mainly used for large hexagon head steel structural bolts such as GB/T 1228 to 1231, DIN 6914 to 6916 and DAST.
b. Machine bolts: bolts used on wind turbines, mainly used are GB/T 5792, GB/T 5783, GB/T 70.1, GB/T 6170, GB/T 97 and other hexagon head bolts, hexagon socket bolts, and hexagons. Nuts and washers.
c. Blade bolts: The bolts that connect the wind turbine blades, mainly for some newly designed non-standard double-headed bolts and T-type round nut products.
Under certain conditions, the quality of raw materials will affect the choice of fastener production process parameters, and directly affect the overall mechanical properties and safety of high-strength fasteners used in wind power. In the wind turbine installation process, the development and application of wind power high-strength fasteners still have challenges from suppliers and manufacturing.
Faced with new challenges, the technology and materials for fasteners used in wind power, potential huge markets and expectations for technology will be the subject of sustainable development. At the end of 2010, a large number of national wind turbine standards have been issued, which is good news for wind turbine manufacturers. We also hope that the National Fastener Standardization Technical Committee will issue an industry standard or national standard for wind power fasteners as soon as possible to fill our country’s This area is blank.
Opportunities and challenges coexist. The wind power industry in China is developing rapidly. Wind turbine companies are gearing up to compete with foreign suppliers' competitors. During the “Eleventh Five-Year Plan Periodâ€, we solved the problems from scratch; during the “12th Five-Year Plan Periodâ€, we must achieve leap-forward development and solve the problems that have come from good. Wind power is still a new industry in the world. China faces great opportunities for development, but many problems need to be resolved as soon as possible to promote its healthy and sustainable development.
In recent years, the wind power industry has experienced explosive growth. Not only does existing wind power companies rapidly expand production capacity, but investors outside the industry have also proposed to enter the wind power industry.
However, wind power itself has "congenital deficiency", subject to the dual constraints of natural conditions and market risks, instability, high prices, and transmission distance, but also make wind power in the market lack of competitiveness. In the process of negotiations with the big power grid, wind power companies are also in a weak position and have little right to speak. If wind power naturally develops, its fate can be imagined. Therefore, to make wind power play an important role in reducing emissions and developing new energy sources, policy support for increasing support is indispensable, and the efforts of wind turbine generators are also indispensable.
China has the world's largest wind power market. After several years of development, it has also laid a good foundation, and it is entirely possible to spawn a local, world-renowned wind turbine manufacturing company. China's wind power industry already has the advantage of “benefiting from time to timeâ€. At the same time, we can also set up a technical standard system that suits China’s national conditions through the observation and statistical analysis of the national wind conditions and environmental parameters, form a technical threshold, transform into a powerful technology country, and thus dominate the development trend of wind power technology in the world.
As countries compete to develop new energy technologies, whoever gains advantages in strategic competition for new energy will be able to act as the “leader†of technological innovation, the “loton†of economic development, and the new international in the next industrial revolution. The standard setter.
The high-strength fasteners used in wind power are required to have strong stability due to long-term field service, poor environment, and poor maintenance conditions. Under normal continuous working conditions, wind power fasteners must ensure a service life of more than 15 years. Most of the high-strength bolts for wind power are 10.9, with a small amount of 8.8. 10.9 high-strength bolts, the hardness value of 32 ~ 39HRC, tensile strength Rm ≥ 1040MPa, elongation after breaking A ≥ 9%, the area of ​​contraction rate Z ≥ 48%, low temperature impact strength (-45 °C) KV2 ≥ 27J.
The high-strength bolts used in wind turbines are used as the connecting parts of the main engine, blades, towers, and reduction gearboxes. They are responsible for the basic performance and basic functions of the components together with the main engine; they mainly include the following types:
a. Tower bolts: bolts used on towers of wind turbines are mainly used for large hexagon head steel structural bolts such as GB/T 1228 to 1231, DIN 6914 to 6916 and DAST.
b. Machine bolts: bolts used on wind turbines, mainly used are GB/T 5792, GB/T 5783, GB/T 70.1, GB/T 6170, GB/T 97 and other hexagon head bolts, hexagon socket bolts, and hexagons. Nuts and washers.
c. Blade bolts: The bolts that connect the wind turbine blades, mainly for some newly designed non-standard double-headed bolts and T-type round nut products.
Under certain conditions, the quality of raw materials will affect the choice of fastener production process parameters, and directly affect the overall mechanical properties and safety of high-strength fasteners used in wind power. In the wind turbine installation process, the development and application of wind power high-strength fasteners still have challenges from suppliers and manufacturing.
Faced with new challenges, the technology and materials for fasteners used in wind power, potential huge markets and expectations for technology will be the subject of sustainable development. At the end of 2010, a large number of national wind turbine standards have been issued, which is good news for wind turbine manufacturers. We also hope that the National Fastener Standardization Technical Committee will issue an industry standard or national standard for wind power fasteners as soon as possible to fill our country’s This area is blank.
Opportunities and challenges coexist. The wind power industry in China is developing rapidly. Wind turbine companies are gearing up to compete with foreign suppliers' competitors. During the “Eleventh Five-Year Plan Periodâ€, we solved the problems from scratch; during the “12th Five-Year Plan Periodâ€, we must achieve leap-forward development and solve the problems that have come from good. Wind power is still a new industry in the world. China faces great opportunities for development, but many problems need to be resolved as soon as possible to promote its healthy and sustainable development.
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