Mechanical Seals Manufacturer In China

Rows of windmills, turn to fairy-tale kingdom. June 26 afternoon, the Chinese – the outcome of the Government of Denmark wind energy development conference and the “wind power into the campus – Wind Power generator Knowledge Network Competition” prize presentation ceremony into the Hall of zero carbon. Danish Ambassador Counselor Cohen briefed the general situation of the project, and the Imagination of wind power in the future role of city life.

The Danish wind energy development in the site selection results conference hall in the zero-carbon, Cohen said the project’s purpose and concept of zero carbon coincides with the museum environment. Zero Carbon Museum in specific operational feasibility and demonstration of high significance. While zero carbon Museum, participants can experience the green lifestyle and philosophy, advocating green low-carbon life, and participate in them to.

Shanghai World Expo 2010 theme of the city to make life better, carbon is also advocated by the World Expo concept and practice of green living. In the Cohen opinion, the future of wind energy projects and the healthy development of the city of great relevance. “When I see a city when it is not isolated, but with the surrounding food system, water system linked to. Wind energy projects producing electricity for the urban, the urban transport ‘blood’. In the case of global climate warming , the recent natural disasters, such as Sichuan, the drought and so on irrational use of natural resources and human. only the scientific use of human nature in order to reduce the disaster, to let the city breathe more fresh air, city life can be more beautiful. ”

In Denmark, wind power generation project is a complete walk the road of commercialization: the basis of the availability of technical conditions, the project will be based on market demand and site conditions, while the interest groups with relevant full range of communication, and ultimately decided the project implemented or not. In laymen’s terms, small wind turbines installed are very convenient, but also with visual beauty. So the future of small wind turbine power generation project will become a Sino-Danish cooperation in the field it? In this regard, Cohen explained, “because the reasons for climate and environment in China, only a few points may Anzhuang windmill, so the market is very small, while small-scale wind turbine generating capacity also very limited, small-scale wind turbines will not be the future of Dan wind energy development projects. “comparison,” a large windmill to windmill power generation is the future trend of internationalization, but also commercial power thing. “Cohen added that the current development of large wind power projects, mainly based on macro-state solution energy crisis, so it is very urgent and important.

China – the Danish government to wind energy development projects (referred to as WED) is the two governments of China and Denmark in the field of renewable energy technical assistance projects. The project began in 2006, 2010. Cooperation, the two sides on the four sub-projects have made significant achievements, including wind resource assessment, wind farm planning and post-assessment, wind turbines manufactuer research, and advocacy training projects promotion.

Wind power generator projects in full preparation, while Fujian Electric Power also invested heavily in wind turbine manufacturing investment base project. Allegedly, the project will introduce international advanced level of direct drive Daxing offshore wind power equipments technology to fill the Fujian Province in large Fengji wind generators manufacturing fields blank and promote wind power industry chain extension.
After completion of the project will be the biggest fan Hercynian manufacturing base. Under the strategic cooperation agreement, the project plans to build fan base in manufacturing at least one assembly plant and a fan factory, the main production apply to terrestrial, coastal, offshore wind farms of large offshore wind equipment, designed to reach one million kilowatts in wind power machine’s production capacity, estimated initial investment of 800 million yuan. Fan manufacturing base project will be based in Fujian, the whole country, through the introduction of advanced two-megawatt turbines and larger wind turbine generator manufacturing technology, production settled Ningde sales.
But industry analysts also noted that while offshore wind power has a higher than land-based wind power technical barriers, less competitive, get better profits. But the short term, the development of offshore wind power on a limited positive effect on the performance of listed companies.

In 2010, offshore wind power as a prelude to the start of the concession tender officially opened. Although offshore wind power has a good wind resources, coastal network architecture is superior, the advantages of close to load centers, but its risks can not be ignored. Compared to wind farm developers, equipment manufacturers and other interested parties, the more directly bear these risks. China Guangdong Nuclear Wind Power Assistant General Manager Lu Hao said: “The offshore wind power development with high-risk, and advanced character.”

The high cost of long processing time and

China’s offshore wind generators resources such as wind power surveys for approval by the Shuiguizongyuan, understand Shuiguizongyuan very strict examination and approval. Marine environmental assessment and preparation of the report and assessment route longer time. General approval from the wind to the sea project a reasonable time was 2.5 years, longer than the land-based projects. In addition, the sea-front costs of developing wind power is wind power generator on land about 10 times.

Fan high price, design experience less

Although the major wind turbine manufacturers competing to develop offshore wind turbines, but the real volume manufacturers can rarely, less than the demand for short-term memory in the case, there is little room developers keep the prices down. Technically the fan, fan manufacturers to take part of the system Guonei pickled I design principles, in order to improve the offshore wind turbine reliability and availability, but may increase the device cost. Add twice the equipment cost is still in a high level.

In the design of wind farms, offshore wind power generator currently have some experience of the Design Institute designed little competition, inadequate design of high cost. Design costs as the proportion of small, risk is relatively small, design experience are a major risk.

Multiple risks faced by construction

Wind from the currently available data, China’s annual 50-meter-high coastal wind speeds ≥ 8m / s wind speed time to account for 40%, ≥ 10m / s wind speed accounted for 20% of the time, showing that construction of wind on the sea have a certain impact.

It is understood that whole sea area north of the Yangtze Estuary can work for about 1/3-1/2. Generated in the Western Pacific, 29 tropical cyclones each year, of which can affect tropical cyclones north of the Yangtze Estuary annual average of 3.1, up to up to 7 years (1990), at least 1 year only. 1949-2007 years, a positive landing north of the Yangtze Estuary were 5 times (2%). Waters north of the Yangtze Estuary can be seen every year by the impact caused by the typhoon, but are less opportunities for attacks.

As the domestic manufacturers and construction unit fans lack experience in building offshore wind, the early construction, construction progress will be slower, but with the progress of the project, with the maturity of various types of work, progress will accelerate gradually. But in general there is the potential risk of contractor delays.

It is understood that China is still not suitable for lifting of the special vessels at sea fans. Construction of multi-base can be installed more domestic vessels, but can be more than 5 meters in diameter pile foundation construction of the vessel less. East China Sea Bridge, a similar scheme can, with the overall lifting capacity floating crane lifting all boats, 20 domestic, but most of lifting height is not enough. Shows that if large-scale offshore wind power development, the lack of construction of the ship’s problem is quite serious.

Wind farm operation and maintenance risks

Ease of maintenance point of arrival mainly by the weather, sea state, distance and transportation decisions. Distance offshore wind farm, the general 10-50 kilometers offshore. In addition to fans of quality, high reliability requirements other than necessary maintenance is essential. Currently abroad, offshore wind generator farm maintenance overhaul the means of transport are boats and helicopters. The two modes of transport by the weather, great influence on sea conditions.

Availability from the fans point of view, the fans in terms of land, offshore wind turbines require higher reliability, learned from the current situation, offshore wind turbine availability is generally low.

Submarine cable is the problem can not be ignored, it is known, the domestic 35KV and 110KV submarine cable technology is more mature and complex. But can not produce 220KV submarine cable. The cost is land Submarine cables 5-10 times the risk of injury exist anchors. Relatively strong coastal grid structure, but involves offshore wind farm in the local network is also weak, according to a potential reason as rife electric grid can not run the risk of full power.

Offshore small  wind turbine tower tube for years by the invasion of sea salt, the corrosion rate faster than the terrestrial environment, in addition to the tower tube manufacture in strict accordance with the requirements of anti-corrosion coating, regularly checked to maintain the tower tube. As the fan base is located in the seabed, seabed local shape changes in the wave, tidal and ocean current role of seafloor topography in sports, on the basis of the stability of a great impact, sometimes endangering the safety fan. While taking fully into account in the design of ocean currents, waves, tidal effects on the basis, but fans running, the fan base should be regularly diving observations and maintenance.

Internet Risk

State has not developed a unified electricity price of wind turbine generator at sea, while the electricity price is indeed a major source of income developers get clear and reasonable electricity price allows developers to formulate investment and financing plans.

In addition, the coastal areas although high levels of network structure, but involves the Internet for offshore wind power shortage still exists, grid companies involved in offshore wind power development in the responsibility should be strengthened.

In their side and overhead, are tall, they are more numerous than the wind generators. Huge fan straight sweep the sky, see people dizzy.

Here is the Asia’s largest wind farm – Huitengxile wind farm.

Located in the Inner Mongolian Plateau, is also a vent, its name in Chinese means “cold ridge.” Can be seen here, rich in wind resources.

In 1996, construction of wind power generator farms here. According to the plan, where to build a million-kilowatt wind power base. At present, there have been Huaneng, Datang, Huadian, north Beijing to the China Guangdong Nuclear and other seven major state-owned enterprises stationed, with a total installed capacity of more than 100 million kilowatts.

“If all the running, the electricity generated each year in 300 million degrees.” Huitengxile North United Power wind farm, said head of the farm Zhi.

Li Zhi in the wind farm has been done for 14 years, he was responsible for management, including 12 kinds of models with 132 wind turbines and two substations. “First Financial Daily” reporters, when the aerial of the mobile phone is always ringing off the hook, and he commanded the men each time, what materials to use to repair parts which can be more than save some money down.

“No Do not do that. Once the limit of electricity has been cut away the net profit ah.” He said that because of limited power, this family tradition electric field on the loss of nearly 400 million profit.

“A few years ago has been good, limited power is not obvious.” Zhi told reporters, before 2008, Huitengxile wind power companies only 5 family tradition, the scale is also not very high. But two years ago and last year, wind power scale soaring. Today, seven companies are scaling up, “the speed of wind power generator expansion has far exceeded the speed of power grids.” He said.

Outstanding issues every year. Each year in October to the second year in April, a full six months, Zhi hearts are tugging. He said: “The fear is that the dispatch room the night before the power company sent a text message. Text messages telling me how much power the next day to allow delivery. This year, limit such messages more and more power. Restrictions on electricity up to the small wind turbines time is a kilowatt not let you send. ”

This family tradition Zhi management field and other different. 132 wind turbines, some use of a longer time, are already aging and damage. “In winter, in temperatures of minus 40 degrees, the stop loss is very great.” Zhi told reporters, “If the limit of power 5 hours, the old machine stopped, and then spend 78 hours may have not start up.”

Family tradition in this field reporter dispatch room of the table to see a piece of paper that said more than a dozen stations have been number of wind turbines can not stop. “Can not stop, and basically that old machine.” Dispatchers said.

Huadian Huitengxile Wind Farm Safety Minister Liang Zhenfei too bad the same day. He told reporters that the task based power generation target assigned every year, and even that the average utilization of wind turbines can not be less than 97%.

This allows Liang Zhenfei very difficult, after all, is not how much power he made the decision – the decision to God how much wind, how much electricity the power company decided to send, and he can do is to safeguard the 120 “big windmill.”

Walking in the Gobi desert is boring, but the western end of Hexi corridor Jiuquan miles within the Gobi Desert, jumped into the eyes lined windmill generators, like an oasis, so feel suddenly heated up. Wind power companies in Gansu Province WANG Ning Bo, director of an interview with reporters today, said, with the gradual expansion of Gansu scale windmill power, windmills all over the Gobi and deep eco-tourism benefits are prominent features.
WANG Ning Bo introduced Jiuquan, Gansu provincial government use for the mountains north and south, central part of the flat, open desert, the natural formation of two mountains and one trough, a geographical advantage of what wind channel, launched in 2009, planning and construction of 10 million kwh of China’s first domestic wind power bases, the Shanghai World Expo Gansu Museum of wind power “model” came from this base, aims to introduce clean energy in today’s and future society, Gansu Province and even China to adjust energy structure, energy conservation significance produced, so that Gansu’s resources more fully into play, and to promote the development of equipment manufacturing industry, thus changing pattern of economic development and structural adjustment, the final push to improve people’s livelihood.
Gansu is a country rich in wind power generator resources, one of the provinces, according to “Wind Power Project in Gansu Province Planning Report” and the results of the latest analysis of meteorological departments, the province’s 10-meter high wind energy resource of about 237 million kilowatts of total reserves, total reserves of wind energy fifth in the country, occupies the country can be developed using the third, the annual effective wind energy reserves in more than 800 kwh per square meter.
August 1995, Gansu Provincial Power Company yumenzhen about 12 kilometers southeast of building a 30-meter-high wind towers, and began to wind power generator development for the purpose of wind resource monitoring. After 10 years of development, the first wind farms in Gansu Province from the initial stage of 01,200 kilowatts and gradually developed into a total scale of 110 thousand kilowatts of large-scale wind farms.
Wang Ning Bo said that wind power installed capacity in Gansu this year will reach 5.25 million kilowatts, compared with traditional thermal power could reduce carbon dioxide emissions by around 13 million tons, sulfur dioxide emissions by 15,000 tons, about 10,000 tons of dust emissions, the annual power generation 11.5 billion kwh, an alternative thermal power 3.7 million tons of standard coal in savings, annual savings of more than 10 million cubic meters of water resources, contributed to the ecological environment.
In an interview with reporters in Gansu, Hexi Corridor, Gansu Jiuquan many times through the lot of wind power base, is pleased to stop every time, and many strangers together enjoy the patchwork of Windmill pedestrian woven mesh picture, which shows vitality, feeling so dull as the original windmill “whining” of the rotation disappeared.
The windmill height of 44 meters, from the three long leaves composed of more than 20 meters, generators export voltage 690 V, step-through box-type transformer of 10 KV, 110 KV boost after the grid. Check the many Jiuquan base of wind power company CEOs, has expressed confidence on wind power development. Wang Ning Bo said, according to wind power development plan in Gansu Province, since 2020, expanded to 40 million kilowatts installed capacity over that time, Hexi Corridor has become the world’s largest wind power base.

H8.0-10KW wind generator is made of permanent magnetic material,Cuprum alloy, and Aerometal.And Hummer wind turbine introduce the technology of starting-up in breeze,so its rated start-up wind speed is low.In addition,the advanced controlling system of H8.0 provides perfect protection for overcharging, over discharging, short circuit, overloading,overheating,etc.

H8.0-10kw is well used in:
–Housing
–Telecommunications Station
–TV Transfer Station
–Monitoring Station (military, hydrology, observatory)
–Water-pumping Station
For example,it can drive air-condition (8-10 horsepower), pump or other electrical appliances which power is less than 8KW.

Technical Parameter of Hummer H8.0-10kw: wind turbine generators
Rated Output (W)  10000
Max Output (W)  15000
Charge Voltage(V)  DC 240V
Quantity of Blade  3
Blade Material  GRP
Blade Diameter (m)  8.0
Start-up Wind Speed (m/s)  3.0
Rated Wind Speed (m/s)  10.0
Rated Rotate Speed (r/min)  200
Wind Utilize Ratio (Cp)  0.4
Generator Efficiency >0.85
Generator Output:single-phase AC of variable frequency
Generator Output AC Frequency  0-280
Tower Height (m)  15
Rated Charging Current (A)  41.7
The maximum charging current (in a short time)(A)  65
Generator Weight (kg)  287
12V 600Ah or 800Ah Battery  25 pcs

Recently, XJ WRTS-800 wind turbine simulation systems and PRDS-600 Pitch simulation systems, wind power control technology R & D Center successfully put into operation.
XJ WRTS-800 wind turbine simulation system consists of XJ Electric and the joint development of the University of California, truly the wind turbine machine object of the real-time simulation, to be completed small wind turbine on-line real-time simulation and control system development test work . The successful development of the system to fill gaps in the wind power industry, for our wind turbine generators control system for self-development and design of a landmark.
The system consists of wind resources, mechanical drive, electrical systems, control systems, wind round, tower and other simulation model, and configure a variety of analog signal generator and signal logic control unit. The computer equipment in the strong backing of the system to meet real time requirements, while maintaining a simulation model of high precision and high fidelity, for wind generator control system of developing and manufacturing 提供 complete functional testing of achieving a “Quanmian simulation Shiyan , the limit condition tests, field failure can be reproduced, reduce on-site commissioning time “, to ensure that control systems on the reliable operation of the fan.

Wind power generators main control system

XJ PRDS-600 Pitch simulation system consists of XJ Electric Company and the Hong Kong Science and Technology University, is the world’s first fully meet the Pitch System Operation Simulation System test requirements.

Pitch Simulation System

The system solved the pitch system can not be fully field test conditions, test cycle is long, difficult to reproduce the problem fault. The main functions are: operating condition simulation test, the system dynamic performance test, pitch motor performance testing, simulation testing network fluctuation, low voltage through functional testing, security testing.
The two successful application of simulation test system for the XJ the next step in the development of wind power industry to provide strong technical support

Today, Asia’s first offshore wind power turbines market, focusing the professional platform for “2010 Shanghai International offshore wind power and wind power industrial chain Conference and Exhibition” opened in Shanghai. Including the Sheraton Shanghai Hongqiao General Assembly held at the Pacific Hotel and exhibition held in Shanghai International Exhibition Center to display area of 10,000 square meters.
National Energy Board new energy and renewable energy Secretary, Wang Jun, Vice Minister of Petroleum and Energy of Norway, the NPC Environmental and Resources Protection Committee Mao Rubai, China Association of Resources Comprehensive Utilization of Renewable Energy Professional Committee of General Li Junfeng, China International Trade Promotion Committee Vice Chairman Wang Lie Shanghai Branch Shanghai Development and Reform Commission Secretary Zhou Qiang, Sinovel Technology (Group) Co., Ltd., Han Junliang,  up wind power generators business unit president and other leaders in the General Assembly speech and cut the ribbon.
After 10 years of development, the world’s offshore wind power technology is becoming mature. National Energy Administration, deputy director of renewable energy sources recently said Shi Lishan, to speed up the construction of offshore wind power, the basic conditions, offshore wind power will be the focus of future development of wind power. National Energy Board has in recent days to Liaoning, Hebei, Tianjin, Shanghai, Shandong, Jiangsu, Zhejiang, Fujian, Guangdong, Guangxi, and Hainan provinces and the authorities issued a circular calling for offshore wind power to declare parts of the concession tender, and offshore wind power concession tender exercise was launched in April.

Jiangsu, Zhejiang Bohai Bay region compared to large wind power density (more than 200W/m2), while no strong typhoon, for large-scale offshore wind farm construction is expected to become large-scale offshore wind farm construction in recent years. Jiangsu Province plans to build 10 million kilowatts by 2020, wind farms, including offshore wind farm seven million kilowatts, while the overall planning in Zhejiang Province is 100 million kilowatts. According to reports, now we have basically decided to select two in Jiangsu coastal wind generators offshore wind power project and two beach projects, offshore wind power development of a single item scale of 300 thousand kilowatts, tidal flats developed 200,000 kilowatts of wind power, Energy Bureau to prepare this 1 million kilowatts of four projects at the same time for bidding. Shi Lishan, “said Shanghai’s Donghai Bridge Offshore Wind Farm has been fully installed, there are already more than 10 units in operation. The construction of offshore wind projects have accumulated significant experience, but also strengthened our speed up the development and utilization of offshore wind energy resources determination and confidence. ”

It is worth mentioning that in the spring and summer 2010, will have two important events in China and Norway in offshore wind power cooperation. Norway’s Consul General to Mr Impey said: “I applaud China’s determination to develop new energy sources. I hope that this commitment will help to promote the great potential of offshore wind power development. As the overseas co-parties, the Kingdom of Norway in Guangzhou Consulate General, Innovation Norway, the Department will be opened in the active site of its rich Norway Special Orientation offshore wind power technology. and set the national pavilion during the exhibition period, the Norwegian wind power companies will showcase their cutting-edge technology and products.

In the wind’s blowing, the wind mini generators wheel rotation, so that the air force can be transformed into mechanical energy (speed + torque). Wind wheel hub shaft fixed to the generator, wind generator drive wheel rotational axis of rotation, drive to issue permanent magnet three-phase three-phase AC generator. Changing wind speed, suddenly big suddenly small, given the current and voltage wind  power  generator also with the change. Electricity sent through the controller rectifier, the AC into DC with a certain voltage to the battery charging. DC output from the battery through the inverters, turned to 220 volts AC, supply the user’s home appliances.

Recently held in Jilin Wind Power Work Forum National Grid came an important signal: the full implementation of the national grid to be strict on wind power online access. The National Grid has proposed building the wind farm, wind power network, all aspects of business operation and management standards, are pushing them into the national standard. Energy officials also expressed the access threshold set wind power, wind forecast management and rational “abandoning the wind” of public approval.

The main wind power generators by the local Development and Reform Commission officials, provinces, major wind energy business group leader and the major wind power equipment factory executives participating in the meeting, the national power grid to deliver the industry’s intention to strengthen the management of urgent Wind Power mentality. The National Grid standard to the national standards, no doubt will bring the domestic wind power equipment industry reshuffle effect, a number of technical capacity is not enough vendors will be eliminated.

Response to the national grid, “and net hard,” Interrogation

Since last year, with the large-scale wind turbine generators installed capacity launched, “wind power is difficult,” “a large number of wind turbine idling” and call for enacting. National Grid has so hamstrung by the industry, is alleged to lazy to fulfill the law of “full protection of the acquisition,” obligation, hindered the development of wind power industry.

State Grid Corporation of India deputy general manager of Shu Biao at the national forum on wind power grid for the first time a comprehensive response to these industry Interrogation: First, there is no planning, consumptive orientation is not clear, wind generators development and construction of power grids between the lack of coordination, can not do organic interface; second wind power project with the approval of the project out of line, state and local approval, respectively, the first batch of wind generators project, power project after the grant; Third, the construction period does not match.