电站技术供水系统中可调式射流泵的初步研究

Initial Research on Adjustable Jet Pump Used for Units Technical Water Supplying System at Powerstation

电站水头较高时 ,一般采用射流泵供水方式作为机组技术供水的主供水方式 ,自流减压装置作为备用供水方式。而采用射流泵供水的电站 ,当电站水头变化较大时 ,射流泵宜采用可调式。鉴于可调式射流泵目前在国内缺乏工程实践 ,以三峡电站技术供水系统为例 ,针对具体电站对可调式射流泵进行了初步研究、性能分析、选型计算、模型试验等。

If a power station runs at high head, the wa y of water supplied by jet pump is usually as the way for generator units technica l water supplying system, and the way of water supplied by pressure reduce devic e is at stand-by. When a power station takes the way of water supplied by jet pu mp and the running head varies at a large range, the jet pump should be adjustab le. Due to no experience of adjustable jet pump in internal, an important resear ching item was applied and approved for the research of technical water supplyin g system at Three Gorges Powerstation. At the same time, performance analysis, c alculation and model test of the adjustable jet pump are performed.