紫坪铺水电站特定工况下尾水管振动及异响分析与处理  

Analysis and Treatment of Tailwater Pipe Vibration and Abnormal Sound under Specific Working Conditions of Zipingpu Hydropower Project

作　　者：赵文杰[1] ZHAO Wenjie(Sichuan Province Zipingpu Development Co.,Ltd.,Chengdu Sichuan 610091)

机构地区：[1]四川省紫坪铺开发有限责任公司,四川成都610091

出　　处：《四川水力发电》2024年第S01期148-153,共6页Sichuan Hydropower

摘　　要：以水轮发电机组在特定工况下尾水管振动和异响为出发点,通过收集数据,从机械、电气和水力,三个方面对问题进行了深入分析。结果表明,转轮止漏环间隙不均匀且不对称以及尾水管内的涡带形成了水体共振的主要原因。为解决这一问题,本文提出了采取对尾水管内强迫补气的方法,并根据机组所带负荷、水头、尾水位进行编制程序自动补气,以消除特定工况下的振动和异响,保证机组稳定运行。Taking the vibration and abnormal noise of the tailwater pipe of the hydro-turbine generator units under a specific working condition,this paper analyzes the problem from the mechanical,electrical and waterpower aspects by collecting data.The results show that the uneven and asymmetric clearance of the sealing ring of the runner and the vortex belt in the tailwater pipe forms the main reason for water body resonance.In order to solve this problem,this paper proposes to adopt the method of forced air supply in the tailwater pipe,and program the automatic air supply according to the load,water head and draft water level of the unit,so as to eliminate the vibration and abnormal noise under specific working conditions and ensure the stable operation of units.

关 键 词：水轮发电机组 振动 异响 尾水管 强迫补气 自动控制 

分 类 号：TK73[交通运输工程—轮机工程]