摘要
根据转动机械力矩平衡方程、水量平衡方程以及泵装置系统能量守恒方程,结合水泵全特性,建立了大型立式轴流泵站停泵过渡过程数学模型.通过数值计算,研究了不同的闸门运行方式及不同叶片转角对轴流泵站停泵过渡过程的影响,得到了不同工况条件下的水力参数和机组转速随时间的变化规律,从而为泵站设计及运行提供了合理的依据和建议.
In combination with the complete characteristics of pumps, a mathematical model for hydraulic transient of the pumping station at power failure was established based on the rotation moment balance equation, the discharge balance equation, and the equation of energy conservation of pump devices. By numerical calculation, the hydraulic transient of the vertical axial-flow pumping station at power failure was studied under different operational schemes of the gate and different blade angles, and the regularities of hydraulic parameters and rotational speed of units were obtained under different working conditions, providing a rational basis and suggestions for design and operation of pumping stations.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第3期272-275,共4页
Journal of Hohai University(Natural Sciences)
基金
国家"十五"科技攻关资助项目(ZZ02-03-01-04)
关键词
轴流泵站
停泵过渡过程
数值计算
快速闸门
叶片转角
axial-flow pumping station
hydraulic transient at power failure
numerical calculation
rapid-drop gate
blade angle
