In the light of more horniness sand & the characteristic of tuibine structure,this paper introduces simply the technology of cooling water supply from turbine head-cover and the combined cooling water supply system from turbine head-cover & pumps in Yaoheba Hydropower Plant and indicates that this system is simples,reliable & economy,and can be controlled automatically.

Traditional cooling mode of hydraulic generating units usually adopt manual operation to control cooling water supply quantity of units through monitoring instrument,and the inferior reliability of the flow meter frequently influence the cooling effect of units,thus generally induces accident.