Wind Turbines Manufacturer in China

Netherlands, Friesland recently announced a large-scale wind generators development plan, expected 2020 new 200 large wind turbines. By then, half of the families Friesland electricity will come from wind power generator.

It is reported that 200 new wind turbines were as high as 80 to 120 meters, a total cost of one billion euros. Northern part of Friesland in the Netherlands, near the North Sea, is rich in wind resources.

Netherlands Central Bureau of Statistics show that as at the end of 2008, the Dutch land and sea total installed wind power capacity 2216 MW, 470 MW more than the previous year.

Wind turbine bearings can be divided into three categories, namely: yaw bearings, pitch bearings, transmission bearings (main shaft and gearbox bearings). Yaw bearings installed in the tower’s junction with the cockpit, pitch bearings installed in each blade root and hub joints. Each wind turbine equipment bearings and a set of three pitch yaw bearing (part of the megawatt-class wind power generator for the following non-adjustable blades, can not pitch bearing).
A code method
Wind turbine yaw, pitch bearings, code-named methods used JB/T10471-2004 method in the code wheel bearing, but in wind turbine yaw, pitch bearings double row appears in four point contact ball wheel bearings This structure bearing the code is not provided in JB/T10471-2004, therefore, an increase of double the standard four-point contact ball bearing turntable code. As the single-row four point contact ball bearing turntable with a 01 structure type code that, while the structure type code 02 that is double reducer ball turntable bearing structure, so that the provisions of 03-row four point contact ball bearing turntable structure.
2 Technical Requirements
2.1 Materials
This standard provides yaw, pitch bearing ring of material selection 42CrMo, treatment with the overall quenching, after quenching hardness 229HB-269HB, part roller surface quenching, quenching hardness of 55HRC-62HRC. As the wind turbine yaw, pitch bearings complicated by force, and bearing to withstand the shock and vibration relatively large, therefore, required to withstand the impact of both bearing and can withstand a greater load. Host life requirements wind turbines 20 years, bearing the cost of installation, so the required yaw, pitch bearing life have reached 20 years. Bearing this matrix hardness 229HB-269HB, able to withstand the impact without the risk of plastic deformation, while parts of the surface roller quenching hardness reached 55HRC-62HRC, increase the contact fatigue life, in order to ensure long bearing life requirements.
Low-temperature impact energy of 2.2
The standard yaw, pitch wheel bearing rings at low temperature impact energy requirements: -20 ℃ Akv not less than 27J, cold under the Akv value can be determined in consultation with users. Wind generators may work in very cold areas, the ambient temperature is about as low as -40 bar, bearing the working temperature is about -20 ~ C, bearing at low temperature must be able to withstand large impact load, therefore, required bearing rings The material in the quenched and low temperature impact energy tests must be done, taking on the part of the bearing rings made of sample or the same performance and with rings under the same conditions of sample treatment, in the -20 ~ C environment do impact function test.
2.3 Bearing Gear
As the wind generators bearing drive accuracy is not high, and the larger ring gear diameter, gear modulus larger, and consequently, the accuracy of the general level of gear required by GB/T10095.2—2001 of 9 or 10. However, due to work under the pinion and ring gear bearings between the impact, therefore, bearing ring gear tooth surface should be hardened, small gear tooth surface hardness generally 60HRC, taking into account other life design, a large gear tooth surface quenching hardness requirements not be less than 45HRC.

Recently, Jin Feng Technology Co., Ltd. in Jiangsu Province, the water ring of the 2.5MW wind farm wind turbine successfully completed loading. This is a golden first wind technology installed wind turbine intertidal zone, the intertidal zone to develop future wind turbine foundation.
According to reports, the project from the Yangtze New Energy Development Co., Ltd. together with Goldwind, in December 2009 started construction of fan base, early in March 2010 began to fan equipment supplier, from the March 18 start lifting, 24 well Lifting completed. Ongoing construction and electrical control systems engineering submarine cable laying, is expected to achieve and network operation in May.
Project used Goldwind 2.5MW Fan Changjiang new energy ring in the water Xiangshui wind intertidal area, just 600 meters from the seawall line, to overcome tidal flood, wind power generator typhoons and other adverse natural conditions. For the special geographical environment and climatic conditions play a series Goldwind product design capability to meet the owners needs to provide the inter-tidal fans. In addition, gold 2.5MW wind technology permanent magnet direct drive fans with advanced permanent magnet direct drive technology and full-power converter technology, simple structure, high reliability, high quality power generation, grid characteristics of superior, low-voltage through the remarkable ability and so on.

Ping Lu Kaidi wind power projects a total investment of 1.5 billion yuan, planning capacity of 100MW, put into operation, the estimated annual electricity output of 1.0158 billion kWh, the annual output value of 140 million yuan, paid taxes 20 million yuan. A project investment 525 million yuan, an installed capacity of 49.3MW, is now officially completed, expected in May to the grid.
Tower built in fan cylinder height of 70 meters, 28 meters long monolithic fan, has built 22 wind turbines.

China’s wind turbines equipment manufacturing industry has basically taken shape, internal to mass production 1.5 MW (megawatts) of wind turbine, 3 MW wind turbine has been put into operation, 5 MW unit being developed, the formation of the whole industry chain, including leaves, motors, wind power industry has formed a relatively comprehensive industrial.

July 14 10 am, 207 State Road, 45 kilometers away from the east side of Xilinhot a wind generator on fire, falling debris, some of the equipment ignited a small piece of grass.

Xilinhot City Fire a squadron of officers and soldiers arrived at the scene to see, the staff are using fire extinguishers, brooms fighting equipment, debris, ignited the flame of the pasture. As the fire dot pitch on the ground 60 meters, on-site wind big, fire water cannons can not fire at close range. Field commanders on the scene alert, all personnel evacuated in fire equipment, 100 meters beyond the up wind turbines direction, to avoid being injured by falling pieces of equipment.

Moment, three long 35 m and weighing 6 tons of wind  power generation has fallen fan. Each fall when the fan, fire officers and soldiers immediately rushed forward and caught the flame will be extinguished, to prevent ignition large tracts of grassland. According to the site to the staff, this wind power generation equipment worth tens of millions. At present, the cause of the fire and further losses are under investigation.

Three years ago, Broad Group decided to enter the wind generators project.

At that time, faced with two choices: First, spend huge sums of money abroad to buy drawings or production license can be obtained in the short term huge profits, which is a lot of wind power of domestic enterprises to go the road; The second is the road of independent research and development, creating

China wind turbines products own brand, but it is difficult to see in the short term profits, will require substantial human and material resources to carry out technical research and development, are doing to “lose money trading.”

Far-reaching decision-makers believe that only by establishing its own national brand can stand at home and abroad in a more favorable long-term competitive position, even if the process of building its own brand is ‘bad bargain’ have to do it! Yuanda Group, an emboldened full discharge

schedule: three years, at least to dedicate 10 billion, making wind power generator capacity to reach 300-500 units, the market extended to the whole country from Liaoning.

Create its own brand, the key is to master the core technology for this, great group played a “winning card” – a combination of the establishment of domestic and foreign R & D team.

Group specializes transferred 80 technical backbone of forming a “wind power R & D team,” while seeking cooperation with the Swiss company ABB, from the core technology introduction, digestion, absorption and improve the start, walking the road of independent research and development.

Today, great group to produce 1.5-megawatt wind turbine, the then built the largest in Asia, planning the most rational assembly plant.

We use sophisticated and advanced equipment to produce 1.5 megawatts of additional fans, and strive to 2-3 years time to the international market.” Yan Lingyu confidence.

Developed a core technology with a 1.5-megawatt wind turbine doubly-fed type, Yan Ling-yu and his team spent a year’s time, but the choice of where loading and debugging Querang Yan Ling-yu ran their legs off.

Ultimately, this Typhoon aircraft testing ground for the election in his home – Kohei.

Where the sand is located in the southeast Horqin, with an average wind speed of up to 7 meters per second, is the best wind farm in Liaoning province.

Reporters on the scene to see, despite the winter, but it sets low temperature, for a low speed fan operation is still good.

This is Taiwan, “China’s intellectual-made” The fans have been meeting in Hanover, Germany industrial Bo appearance attracted many foreign companies with lofty Group signed a letter of intent.

The face of China’s wind power generator installed capacity and market share in projects under construction will be 1,200 billion big cake, since the beginning of the implementation of Yuanda Group, “green development” strategy, following the 1.5 MW doubly-fed-type wind turbine wind farm in the Campion official

After the grid this year, the only country with independent intellectual property rights 1.5 MW Direct-drive permanent magnet wind turbine was born again in great groups, technical performance fully meet international standards, marking the Chinese wind power companies have entered the international advanced level

Siemens Energy has been awarded six wind turbine contracts during the past months worth more than $900 million.

Siemens Energy, the Orlando-based U.S. wind power generation division of Siemens AG, will deliver part of the orders. It will make 66 wind turbines for Competitive Power Ventures for an Oklahoma wind farm; 44 turbines for Duke Energy to be deployed in Wyoming; 26 turbines for Cannon Power Group in Washington State; and 44 turbines for Pattern Energy to be installed in California.

Part of the order will be filled in Canada for Canadian projects.

Siemens has been in the wind-generation market since 2004. It is building a turbine assembly plant in Hutchison, Kan., that will open in the fall of 2010 and employ 400 workers. It also recently expanded a blade manufacturing plant in Iowa that opened in 2007.