China News Service, Chengdu, December 19 (Zhang Dongmei, Liu Meiyu, Zhang Lang) The reporter learned from China Energy Construction Gezhouba Electromechanical Company on the 19th that on the same day, the runner of the Baihetan Hydropower Station No. 9 million-kilowatt unit, which was responsible for the construction task, was successfully hoisted In place.
So far, the "heart" of the Baihetan Hydropower Station's 16 million-kilowatt generating units have all been installed.
At 9:08 in the morning, following an order from the commander of the China Energy Construction Gezhouba Mechanical and Electrical Company, the runner of Unit 9 was slowly hoisted nearly 8 meters from the ground under the traction of the 1,300-ton bridge crane at the right bank plant, from the main installation room of the plant After moving 67 meters in the direction of pit 9 at a constant speed, it slowly fell into pit 9 and took 60 minutes.
The successful hoisting of the runner marks that Unit 9 has entered the final assembly stage of the turbine, laying the foundation for the realization of the goal of safe and punctual commissioning of all units in July next year.
The last unit runner of Baihetan Hydropower Station was hoisted.
Photo courtesy of Gezhouba Electromechanical Company
It is understood that the reason why the runner is called the "heart" of a hydroelectric generating unit is not only because it is the core component of the unit, but also determines the flow capacity, hydraulic efficiency and stability of the unit. It is known as a water turbine. The heart of the generator set.
The runner of Unit 9 is based on national production and innovatively adopts a design and manufacturing method that combines 15 long blades and 15 short blades. It has "optimal performance, optimal structure, and high safety and reliability". Features: The outer diameter is 8.87 meters, the height is 3.79 meters, and the total weight is 338 tons.
The "heart" of the last one million kilowatt unit of Baihetan Hydropower Station was hoisted.
Photo courtesy of Gezhouba Electromechanical Company
In order to ensure that the last unit runner of Baihetan Hydropower Station is safely and accurately in place, China Energy Construction Gezhouba Electromechanical Company strictly implements the standards of high-quality units and strives for perfection to make full efforts in three dimensions. First, make a foolproof hoisting plan before hoisting. The safety and technical clarification of the hoisting process.
The second is to conduct comprehensive safety inspections and carry out trial hoisting drills in advance.
The third is to strictly control the installation quality from the three aspects of wheel center adjustment, level adjustment, and elevation review when entering the machine pit docking, which provides a strong technical and safety guarantee for seamless connection and precise docking of the runner hoisting.
The "heart" of the last one million kilowatt unit of Baihetan Hydropower Station was hoisted.
Photo courtesy of Gezhouba Electromechanical Company
At present, the Baihetan Hydropower Station has officially put into operation 6 units, and it is planned that all units will be put into operation in July 2022.
By then, the power station will generate approximately 62.4 billion kilowatt-hours of power annually, save 19.68 million tons of standard coal each year, and reduce carbon dioxide emissions by 51.6 million tons. It will play an important role in achieving China’s "carbon peak" and "carbon neutral" goals on schedule. After the project, China Hydropower's new "national name card".
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