The effect on cold-end improvement of a 330 MW turbine unit after capacity expansion and efficiency improvement

2018 International Conference on New Energy and Future Energy System

Zhao, Y.Z.^1 ; Wang, B.^1

Steam Turbine and Gas Turbine Technical Department, Huadian Electric Power Research Institute, Zhejiang Province Hangzhou

310030, China^1

关键词: Advanced technology;    Capacity expansion;    Cooling water flow;    Efficiency improvement;    Energy-saving benefits;    Exhaust pressure;    Heat exchange;    Turbine unit;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/188/1/012091/pdf
DOI  :  10.1088/1755-1315/188/1/012091

来源: IOP

【 摘 要 】

Taking a 330 MW steam turbine after capacity expansion and efficiency improvement as the object, the problems of the cold-end system of the unit after capacity expansion and efficiency improvement are concluded. In addition, the cold-end system was improved, and the efficient arrangement of tube bundles of condenser was adopted to increase the heat exchange areas. The cooling water flow also can be increased by adopting advanced technology to improve the profile of the cooling water pump. The results show that the exhaust pressure of the turbine decreases by 1.22 kPa after the improvement of the cold-end system, compared with before. This kind of the improvement has obvious energy-saving benefits.