【作者】 李先良；

【导师】 梁双印；

【作者基本信息】 华北电力大学 ， 热能工程， 2000， 硕士

【摘要】 水泵是火力发电厂进行生产的重要辅助设备，其品种多、耗电量大，研究水泵在不同运行工况下的经济性具有深远的现实意义。本文通过对水泵的各种调节方式进行了深入的分析，在理论上阐述了各种变速调节的节能原理，并对其经济性进行计算及分析。最后通过对现场运行实例的计算和比较，提出了一种最优的改造路径。 通过对N125机组凝结水泵的运行现状进行分析，探讨其节能潜力，论证变频调速控制技术在凝结水泵上应用的可行性。根据该系统运行特性，提出变频调速控制技术在凝结水泵上应用的实施方案。通过对改造后的经济效益进行分析，指出该改造方案节省了电能，提高了经济性，可在同类型机组上推广应用。更多还原

【Abstract】 Water pump, as one of the main annexes to important equipment in power plants, has different types and costs much amount of electric power energy. Research on operating codes and economic characterizations in different running conditions will be quite significant. This paper describes all energy-saving possibilities for different adjustment modes and analyses their economy. Finally, some examples are used to verify the theoretical analysis presented in this paper. By means of aforementioned analyses on the running conditions of the coagulation pumps for N125 steam turbines, the energy- saving potential and the feasibility of the frequency controlling technique applied to coagulation pumps are discussed and analyzed. According to the system characterization, the executing proposal of the frequency controlling technique applied to coagulation pumps is presented. Through modifying the system and cost-estimation- analysis it is demonstrated that the using frequency controlling technique will be able to decrease energy consumption and improve economic behavior. It is suggested to apply this technique to all N125 steam turbine units.更多还原