CAJ | 학술논문

伺服活塞式控制棒水力驱动机构是一种可连续移动且适用于一体化反应堆的新型内置式驱动机构。应用计算流体力学程序FL U EN T对驱动机构内部三维流场进行数值计算和分析。结果显示，驱动机构内部流场唯一压力突变区域在可变节流口处，通过改变可变节流口间隙便可改变控制棒运动状态。当可变节流口间隙在0.5 mm范围内变化时，活塞两侧压差就会改变，进而驱动机构运动状态也会改变。当工作压力为0.1 M Pa时，驱动机构提升能力便可满足设计载荷要求，且流量较小。
사복활새식공제봉수력구동궤구시일충가련속이동차괄용우일체화반응퇴적신형내치식구동궤구。응용계산류체역학정서FL U EN T대구동궤구내부삼유류장진행수치계산화분석。결과현시，구동궤구내부류장유일압력돌변구역재가변절류구처，통과개변가변절류구간극편가개변공제봉운동상태。당가변절류구간극재0.5 mm범위내변화시，활새량측압차취회개변，진이구동궤구운동상태야회개변。당공작압력위0.1 M Pa시，구동궤구제승능력편가만족설계재하요구，차류량교소。
Servo-piston hydraulic control rod driving mechanism is a new type built-in driving mechanism w hich is suitable for integrated reactor and it can be moved continu-ously .The numerical calculation and analysis of the internal three-dimensional flow field inside the driving mechanism were carried out by the computational fluid dynamics soft-ware FLUENT .The result shows that the unique pressure mutation area of flow field inside the driving mechanism is at the place of the servo variable throttle orifice .The differential pressure of the piston can be effectively controlled by changing the gap of variable throttle orifice .When the gap changes within 0.5 mm ,the differential pressure can be greatly changed ,and then the driving mechanism motion state would be changed too .When the working pressure is 0.1 MPa ,the hoisting capacity of the driving mecha-nism can meet the design requirements ,and the flow rate is small .