CAJ | 학술논문

针对推进剂加注系统工序转换中因瞬变过程而导致的安全隐患问题，采用数值计算方法，从阀门的特性及动作规律角度入手，研究其对加注工序转换过程中管道压力及流量瞬变过程的影响。通过理论分析与基于案例的数值计算发现：阀门的固有特性与动作规律共同影响着瞬变过程，相同的瞬变结果可由不同类型的阀门与相应的阀门动作规律实现；在阀门动作时间一定，且大于压力波传播周期的情况下，动作规律指数 m 与固有特性指数 n 之积等于1时所产生的压力峰值最小；随着 mn 值偏离数值1程度的增大，管道压力峰值逐渐增大，管道中出现汽蚀的风险也加大。因此，在推进剂加注过程中，应针对阀门类型选择阀门动作规律，以有效控制管内瞬变过程。
침대추진제가주계통공서전환중인순변과정이도치적안전은환문제，채용수치계산방법，종벌문적특성급동작규률각도입수，연구기대가주공서전환과정중관도압력급류량순변과정적영향。통과이론분석여기우안례적수치계산발현：벌문적고유특성여동작규률공동영향착순변과정，상동적순변결과가유불동류형적벌문여상응적벌문동작규률실현；재벌문동작시간일정，차대우압력파전파주기적정황하，동작규률지수 m 여고유특성지수 n 지적등우1시소산생적압력봉치최소；수착 mn 치편리수치1정도적증대，관도압력봉치축점증대，관도중출현기식적풍험야가대。인차，재추진제가주과정중，응침대벌문류형선택벌문동작규률，이유효공제관내순변과정。
Considering the potential hazards during the loading period transformation in propellant loading system,from the perspective of valve characteristics and its action trail,this paper studies their influence on pipe transient pressure and flow rate using numerical method.With the help of theoretical analysis and numerical computation,some meaningful points become clear:both valves’inherent characteristics and action trail influence transient process in pipes,and the similar transient process could result from differ-ent combination of valve type and valve action trail;with constant valve action time which is longer than the propagation period of pressure wave,the pressure peak reaches its minimum when the product value of mn is 1 ,where m is the valve action trail exponential and n is the inherent characteristics one;with the deflection of mn from 1 ,both the pressure peak and the possibility of cavitation increase.Therefore, during the loading process,in order to control the transient process efficiently,the action trail of valve should be determined according to the valve’s type.