IRAETA helps Beijing Winter Olympics build urban-level charging treasure

2020-04-01

Recently, another batch of forgings serving the China's major energy projects have been fully loaded from Iraeta. They are yoke discs forgings that will be applied to the Fengning project, the world's largest pumped storage power station.



Fengning Pumped Storage Power Station is a key green energy project specifically for the 2022 Beijing Winter Olympics, which is used to provide power protection for various events during the Winter Olympics. After the project is completed, the annual power generation can reach 6.6 billion kWh, which is equivalent to saving 480,000 tons of standard coal, which is of great significance for achieving the 100% clean energy power promised by the Beijing Winter Olympics.

 


Beijing Winter Olympics will be the first "zero carbon green power" Winter Olympics

 

So, what is a pumped storage power station? Simply put, it is an oversized "charging treasure", but it is not charging the mobile phone, but charging the city.


The "cell" of this type of power station is water. Engineers build a reservoir at a high place and a low place. When the power is low, the surplus power is used to pump the water to a high place. The lower reservoirs discharge water for hydroelectric power generation.


 


In order to ensure the construction of the Winter Olympics, more than 300 builders returned to work on chartered flights on March 21

 




IRAETA also worked overtime during the epidemic to ensure that the national key engineering forgings were not delayed

 

Many people may think that this technology is a bit "power-hungry". In fact, the opposite is true. At present, the power conversion rate of large pumped storage power stations can reach a staggering 75% -85%, and the conversion rate of our commonly used mobile phone charging treasure is only About 65%.

 

Moreover, new-type power stations like the Fengning project use reversible generator motors. In general, they are electric motors when pumping water, and they quickly become generators when generating power. Moreover, this pumping-power generation state transition only takes less than 5 minutes.

 

When encountering a large-scale sudden power outage in the power grid, the pumped storage power station can even achieve a "black start" at the second level, that is, without the need for any external power, it only needs to "open the gate and release water" to instantly generate power and wake up the power grid. It is with these advantages that Fengning Pumped Storage Power Station will undertake important tasks such as peak regulation and valley filling and emergency response throughout the Beijing-Tianjin-Hebei power grid.

 

 At present, the world's largest pumped storage power station is the Basconti power station in Virginia, USA, with a total installed capacity of 3003 MW. After the completion of the first and second phases of the Fengning project, it will become the world's top one with a capacity of 3600 MW .



 


Pumped-storage power stations can be constructed using a variety of natural landforms or artificially excavated reservoirs

 

 

The yoke forging provided by Iraeta this time will be installed at the core position of the generator set. It is not only an important structural component of the fixed magnetic pole, but also an important component of the entire magnetic circuit.

 

Because the generator motor generates huge centrifugal force when rotating,these centrifugal forces are mainly borne by the yoke body, so the quality requirements for the yoke forging are also very high.

 

 Highly central sampling, -30 tensile strength 800MPa, yield strength 700MPa, in order to meet customer requirements

 

 

At present, the yoke parts of such units are mostly made of cast steel or steel plate splicing. The use of forged yoke can solve the problems of looseness and shrinkage of the cast yoke, as well as the deformation and misalignment of the steel plate yoke problem. At the same time, a forged yoke with better overall rigidity is also conducive to improving processing and installation accuracy, which is very important for generator motors that require frequent start-stops and fast switching of pumping-generation states.

 

Due to the use of radial and axial integral rolling technology to manufacture yoke forgings, Iraeta has broken the restrictions on the size of forgings in the traditional open forging press opening space,  which provided more space for the future design of many large pumped storage power stations in China.


Yoke discs manufactured using radial-axial rolling technology


Inside a pumped storage power station, the blue circle is the generator motor


In addition, since 2019, Elite has successively provided various forgings such as ring plates, yoke discs, and head flanges for projects in Heilongjiang Huanggou Pumped Storage Power Station and Guangdong Yangjiang Pumped Storage Power Station.

  

The delivery of such products marks another major expansion of Iraeta in the field of clean energy equipment. At present, various types of forgings from Iraeta have been successfully applied to various clean energy fields such as wind power, hydropower, nuclear power, and solar thermal.


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About IRAETA

IRAETA is a manufacturing concern that specializes mainly in a diversified range of products within the forgings industry. Our main products include discs, rings, hollows and special-shaped forgings; grinding balls, rods and liners, mainly used in fields such as wind power, nuclear power, UHV, petrochemical, offshore engineering, machinery manufacturing, mining and other fields.


IRAETA now has 1 sales company, 5 business divisions, 7 management centers and 1 overseas factory, covering an area of 350,000 m2 and having over 1,400 employees. For nearly half a century, IRAETA has always been steadfastly devoted to the forging industry. From offshore wind turbines on the Atlantic coast to the oil fields deep in the deserts of the Middle East, to mines in the lofty mountains of Peru, our products have made their mark. Adhering to the values of “honesty, humility, perseverance and work”, IRAETA is committed to creating sustainable value for global customers through high-quality products.

 

We invite you to learn more about IRAETA by visiting our website at www.iraeta.com and following us on our social media channels:

 

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