高参数大流量供热改造汽轮机中调阀调节抽汽研究

Research on High-parameter and Large-flow Heating Retrofit of Steam Turbine Intermediate Valve Regulating Extraction

以某300MW亚临界机组高参数大流量供热改造为依托,对汽轮机中调阀调节抽汽进行研究。根据用户实际供热需求提供供热抽汽方案,核算机组叶片和轴向推力在供热工况下的安全性,研究并开发适用于热再调整抽汽的新型中压调节阀,制定热再抽汽控制逻辑。

Based on the high-parameter and large-flow heating retrofit project of a 300MW subcritical unit in a certain plant,this paper conducts a study on the steam extraction of a steam turbine with a central regulating valve.According to the user's actual heating demand,provide a heating extraction scheme,calculate the safety of the blades and axial thrust of the unit under heating conditions,research and develop a new type of medium pressure control valve suitable for thermal readjustment extraction,and formulate a heat recovery Extraction control logic.