大流量高压气体减压器技术研究进展及应用  

Progress and application of large-flux high-pressure gas reducing valve

作　　者：徐万武[1] 叶伟[1] 李智严 张振康 张富强 XU Wanwu;YE Wei;LI Zhiyan;ZHANG Zhenkang;ZHANG Fuqiang(Science and Technology on Scramjet Laboratory,College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学空天科学学院,高超声速冲压发动机技术重点实验室,长沙410073

出　　处：《空气动力学学报》2023年第1期49-56,共8页Acta Aerodynamica Sinica

摘　　要：大流量高压气体减压器是大型连续式高超声速试验系统的核心设备,其气体减压供应能力、工作稳定性和可靠性等对高超声速试验系统的试验能力有重大影响。本文对气体减压器的减压原理、技术方案、评价指标和技术难点进行了梳理,介绍了国防科技大学在大流量高压气体减压器技术方面的研究进展,展望了大流量高压气体减压器技术在高超声速试验领域未来的发展趋势。Gaseous large-flux high-pressure reducing valve is the core equipment of the large continuous hypersonic test system. Its gas pressure reducing supply capacity, working stability and reliability have a significant impact on the test capacity of the hypersonic test system. This paper first introduces the principle,technical routine, evaluation index and technical difficulties of pressure-reducing valves for large-flow-rate and high-pressure gas. Second, the development and application of such pressure-reducing valves in the National University of Defense Technology(NUDT) in the past 15 years are summarized, with particular attention paid to the 35 MPa, 100 kg/s pressure-reducing valve developed by NUDT. At last, the application of these valves in complex working conditions, such as large decompression ratios and a wide range of inlet pressure-ratio variation,as well as the future development trend of pressure-reducing valves in hypersonic test systems, are prospected.

关 键 词：气体减压器 动力学振荡 流量调节比 高压气体 高超声速试验系统 

分 类 号：V416.8[航空宇航科学与技术—航空宇航推进理论与工程]