Harbin Electric Machinery Factory successfully manufactures the largest domestic steam turbine generator
On August 5th, Harbin Electric Machinery Co., Ltd. (HEM) made a major breakthrough as it successfully manufactured China's largest 1 million kilowatt ultra-supercritical steam turbine generator. The unit was then loaded onto a truck and shipped to the Taizhou Power Plant in Jiangsu. This achievement marks a significant milestone, placing China among the global leaders in advanced thermal power generation technology.
Experts highlight that this ultra-supercritical turbine is not only economically efficient but also environmentally friendly. It represents the future direction of thermal power equipment manufacturing worldwide and will play a crucial role in China's energy sector moving forward.
The project was based on technology introduced from Toshiba Corporation of Japan. HEM fully absorbed and mastered the design and manufacturing techniques, achieving an 80% localization rate. This rapid progress demonstrates the company's strong technical capabilities and commitment to innovation.
Despite its massive size—measuring 10.9 meters in length and 4.1 meters in height—the unit is highly compact. The stator alone weighs 430 tons, while the entire unit reaches 660 tons. With a maximum output of 1.1 million kilowatts, it significantly reduces construction costs for power plants and achieves an efficiency rate exceeding 99%, making it one of the most efficient generators in the world.
The project began in May 2005 when HEM signed a supply contract with Guodian Company in Beijing. Within 27 months, the first unit was completed, setting a new benchmark for similar projects in China. This timeline reflects the company’s exceptional management and production capabilities.
To meet the high standards required for manufacturing this advanced unit, HEM implemented numerous new technologies, processes, and equipment. They upgraded their facilities, including adding a dynamic balancing machine, a stator base machining center, and a 550-ton crane. Advanced methods like vacuum brazing were used, and the stator frame was assembled in three stages. For the first time, high-performance punching films were applied in the process.
HEM maintained strict quality control throughout the project, following Toshiba’s rigorous standards. Key checkpoints were set at every stage, and challenges such as stator core assembly and rotor processing were successfully overcome. The final product met all quality expectations, earning praise from both Toshiba engineers and experts from American company GE who were involved in the project.
This successful project not only solidifies HEM’s position as a leading manufacturer in the power industry but also lays the foundation for future mass production of similar units. It showcases China's growing technological independence and its ability to compete globally in the field of power generation.
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