流量调节器快速起调过程  

Rapid start-up process of liquid-flow regulator

作　　者：管杰 何宏疆 董万峰[2] 王鹏武[2] GUAN Jie;HE Hongjiang;DONG Wanfeng;WANG Pengwu(Science and Technology on Liquid Rocket Engine Laboratory,Xi'an 710100,China;Xi'an Aerospace Propulsion Institute,Xi'an 710100,China)

机构地区：[1]液体火箭发动机技术重点实验室,陕西西安710100 [2]西安航天动力研究所,陕西西安710100

出　　处：《火箭推进》2022年第5期61-68,共8页Journal of Rocket Propulsion

基　　金：国家液体火箭发动机技术重点实验室基金(6142704180308)。

摘　　要：针对补燃循环发动机启动过程中流量调节器的工作特性,首先建立了描述流量调节器起调过程的动力学模型。然后设计并开展了液流试验,分析了流量调节器在快速起调过程中的特性,获得了不同阻尼孔孔径下的试验特性。试验结果表明,流量调节器在快速起调过程中,流量存在大幅超调的现象,通过增大阻尼孔孔径,可以有效地减小流量超调量。最后通过试验结果验证了仿真模型的合理性,并基于计算结果,分析了流量调节器在起调过程中滑阀位移和流量的变化过程,进一步分析了阻尼孔孔径和升压速率对起调过程的影响。仿真结果表明,为了减小起调过程中的流量波动,流量调节器进出口压差的升压速率应先慢后快。In view of the working characteristics of the liquid-flow regulator during the starting process of the staged combustion cycle engine,a dynamic model describing the start-up process of the flow regulator was established.Then,a liquid flow test was designed and carried out,and the test characteristics under different damping orifice diameters were obtained by analyzing the characteristics of the liquid-flow regulator during the rapid start-up process.The test results show that there is a large overshoot phenomenon for the flow rate during the rapid start-up process of the liquid-flow regulator.By increasing the orifice diameter,the flow rate overshoot can be effectively reduced.Finally,the rationality of the simulation model was verified by the test results.Based on the calculation results,the change process of the spool displacement and flow rate during the start-up process was analyzed.The effects of orifice diameter and pressure rise rate on the regulating process were further analyzed.The simulation results show that in order to reduce the flow fluctuation during the start-up process,the pressure rise rate of the differential pressure should be slow first and then fast.

关 键 词：流量调节器 快速起调过程 试验分析 仿真分析 

分 类 号：V434.2[航空宇航科学与技术—航空宇航推进理论与工程]