200MW超高压抽凝式汽轮机组高背压改造的可行性研究

Feasibility Study on High Backpressure Reform of 200MW Ultra-high Pressure Extraction Condensing Turbine

当今电力市场200 MW以下机组生存空间越来越小,在东北、内蒙等地区冬季供暖需求量大,通过高背压改造,提高了机组的排汽温度,实现了冬季供暖期间机组排汽余热的利用是拯救老200MW机组最有前景的方案之一。文中对C145/N200-12.7/535/535型汽轮机高背压改造的可行性进行了分析。

Under the demand of power market,the living space of units under 200MW is getting smaller and smaller.In northeast China and inner mongolia,there is a large demand for winter heating.Through high backpressure transformation,the exhaust temperature of the unit is increased,and the utilization of waste heat from the exhaust of the unit during winter heating is one of the most promising solutions for saving the old 200MW unit.The feasibility of retrofitting high back pressure of C145/N200-12.7/535/535 steam turbine is analyzed in this paper.