考虑汽蚀影响的给水泵仿真建模及实现

Simulation Modeling and Realization of Feedwater Pump with Regard to the Influence of Cavitation

该文根据蒸汽动力装置模拟器的研制需求 ,讨论了考虑汽蚀影响的给水泵仿真建模和实现方法。蒸汽动力装置中使用的给水泵动态特性变化很大 ,给水泵作为变转速泵的特性模拟在整个蒸汽动力装置热工水力特性模拟中占有非常重要的地位。由于给水泵性能受汽蚀影响很大 ,因此考虑汽蚀对给水泵性能的影响对于提高模拟器在正常工况和事故工况下的仿真精度有很大意义。该文构建的模型形式简单 ,计算精度高 ,覆盖的给水泵运行工况宽。

According to the requirement of the steam power plant simulator, feedwater pump's modeling and realization method are studied with regard to the influence of cavitation in this paper. Character of feedwater pump used in the steam power plants changes frequently and enormously. Feedwater pump works at different speed, its simulation plays an important and key role in the complete simulation of the thermal-hydraulic character of steam power plant. Because its performance is influenced by cavitation greatly, simulation with regard to the influence of cavitation is of significance to the improvement of the simulation precision of the steam power plant simulator under different normal working situation as well as accidents. The model constructed has simple form, has high precision as well as covers the wide operation situation of the feedwater pump. The simulation model and numerical method are referential to the same type of feedwater pump.