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.
作者
徐万武
叶伟
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)
出处
《空气动力学学报》
CSCD
北大核心
2023年第1期49-56,共8页
Acta Aerodynamica Sinica
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
gas pressure reducing valve
dynamic oscillation
regulation ratio of flow
high-pressure gas
hypersonic test system
