This project belongs to the technical field of design and manufacturing of 300MW nuclear power full-speed condensing steam turbines.
Before the implementation of this project, the concepts of low-carbon emissions and green environmental protection were unanimously recognized and implemented globally. Judging from the development direction and market demand of nuclear power technology, in addition to the current development of large-scale nuclear power units, the development of modularity and small reactors (referring to nuclear island reactor types below 300MW) is also an important development direction of nuclear power technology. Especially after the Fukushima incident, the unique advantages of small reactors in terms of safety and economies of scale have become more attractive, and the development of 300MW nuclear power full-speed condensing turbines just provides a solid technical foundation for the development of small reactor nuclear power turbines. As the only commercial nuclear reactor with independent intellectual property rights in China at that time, it was urgent to develop a matching steam turbine unit with completely independent intellectual property rights, which could not only meet the needs of domestic nuclear power projects but also be free from export restrictions. Most of the original 300MW nuclear power units were produced and manufactured using steam turbine technology developed in the 1990s. Compared with existing steam turbines in actual operation in the power plant, this model has relatively low cylinder efficiency and its economy is not very good. It is necessary to develop a more economical and wider application range nuclear power full-speed condensing turbine with a truly 340MW output based on the 310MW nuclear power unit.

1. Main scientific and technological innovations of the project
2. Through optimization and adjustment of the flow passage structure, the output is further increased, increasing the output from 325MW of the original model to 340MW;
3. The new full three-dimensional blade design further improves flow efficiency;
4. Due to the low parameters and large volume flow rate of nuclear power, most of the internal components of the steam turbine are in the wet steam area. This model adopts high-pressure split surface surfacing anti-corrosion materials, and a series of measures such as setting up moisture removal hooks on the low-pressure retaining rings and the final third-stage separators., effectively enhance the corrosion resistance of key components of the steam turbine;
5. Nuclear power reheat butterfly valves have been changed from imported and purchased products to independently designed and manufactured. The performance of fast closing, sealing and other properties are up to or better than imported products, completely breaking the impact of import restrictions on unit supporting;
6. By optimizing the structure of the MSR, it can meet the dehumidification and heating requirements of larger steam capacity.
7. Status and level of intellectual property rights such as papers and works
   Published 3 papers and 5 patents. This project has reached the domestic leading and international advanced level.
8. Application and promotion of the project
   So far, the Chassima nuclear power project is the only nuclear power unit exported overseas in my country, and its important significance in the history of the development of my country's nuclear industry is naturally self-evident. The successful operation of this project not only reflects the great progress made by Shanghai Electric Power Station Equipment Co., Ltd. in independent technological innovation and localization of key equipment, but also marks the beginning of China's nuclear power manufacturing going abroad and into the world.
   Through the implementation of this project, the technical level of the nuclear power 300MW steam turbine of Shanghai Electric Power Station Equipment Co., Ltd. has been improved. Through flow optimization, without changing the basic interface size, a nuclear power full-speed condensing turbine with a rated output of 340MW has been designed and manufactured, enriching the product categories and better adapting to the different needs of users, thereby improving product competitiveness. So far, this series has received orders for 3 units, including Chassima#The two machines passed the acceptance in May 2011. In addition, there is Chassima#The two units of the 3rd and 4th unit projects are proceeding in an orderly manner. Based on a unit of 130 million yuan, this model has achieved a cumulative output value of 400 million yuan for the company. Obtained considerable economic benefits.
   Through the independent research and development of this series of models, Shanghai Electric Power Station Equipment Co., Ltd. has trained a group of R & D teams with strong technical strength and improved the technical research and development capabilities of Shanghai Electric Power Station Equipment Co., Ltd. According to the operation of the unit that has been put into operation, this series of models operate stably, safely and reliably, and all indexes can meet the design requirements, which has been affirmed by users.