CAJ | 학술논문

冲击式水电站机组甩负荷时，为了减小压力管道压力值以及有效防止机组转速升高过大，需在喷嘴后设置折向器共同调节。故在过渡过程计算时通过喷嘴的流量不同于通过转轮的流量，需考虑折向器动作对流量变化的影响，即需引入折向器方程。本文从物理本质和机组特性出发提出折向器的方程，并用工程实例对其进行论证。
충격식수전참궤조솔부하시，위료감소압력관도압력치이급유효방지궤조전속승고과대，수재분취후설치절향기공동조절。고재과도과정계산시통과분취적류량불동우통과전륜적류량，수고필절향기동작대류량변화적영향，즉수인입절향기방정。본문종물리본질화궤조특성출발제출절향기적방정，병용공정실례대기진행론증。
When the load is rejected in the hydropower station with impulse water turbine ,the deflector will be closed fast to avoid the high rotor speed and the needle valve will be closed slowly to avoid great pressure .Therefore ,the discharge through the rotor is dif-ferent form the needle valve on calculation of transients .And it needs to consider the impact of the deflector's action on discharge , which means that the deflector equation needs to be introduced to calculation of transients .Form the physical nature and characteris-tics of the turbine ,the deflector equation is proposed and tested with an engineering example .