Harbin Electric Machinery Factory successfully manufactures the largest domestic steam turbine generator
On August 5th, Harbin Electric Machinery Co., Ltd. (HEM) celebrated a major milestone as it successfully manufactured China's largest 1 million kilowatt ultra-supercritical steam turbine generator. The unit was then shipped to the Taizhou Power Plant in Jiangsu, marking a significant achievement in China’s energy sector. This development highlights that China has now reached world-leading standards in ultra-supercritical power generation technology.
According to industry experts, this advanced turbine generator offers both economic benefits and environmental advantages. It represents the future direction of thermal power equipment manufacturing globally and is expected to play a key role in China’s power infrastructure for years to come.
The project was based on technology introduced from Toshiba Corporation of Japan. HEM not only absorbed the design and technical knowledge but also rapidly mastered the production process, achieving an impressive 80% localization rate. This shows the company's strong capability in technological innovation and industrial development.
Despite its massive size—standing 4.1 meters tall and stretching 10.9 meters long—the generator is highly compact. Its stator alone weighs 430 tons, and the entire unit reaches a total weight of 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%, which is a critical performance indicator.
The project began in May 2005 when HEM signed a supply contract with Guodian Company in Beijing. It took 27 months to complete the first unit, setting a new benchmark for the timeline of similar projects in China. This accomplishment demonstrates the company's efficiency and technical expertise.
To meet the requirements of producing such a complex generator, HEM implemented numerous new processes, equipment, and methods. A large-scale modernization of the production line was carried out, including the addition of a dynamic balancing machine, a stator base machining center, and a 550-ton crane. Advanced techniques 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 manufacturing process.
Quality control was strictly enforced 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, laying a solid foundation for future mass production.
Toshiba’s technical and quality engineers were invited to inspect the unit, and their feedback was very positive. Experts from General Electric (GE) who were working alongside HEM also praised the quality of the product. This collaboration not only enhanced HEM’s capabilities but also strengthened its reputation in the global power industry.
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