摘要
针对传统液体火箭发动机热试车后清洗装置存在的闭式循环缺失、真空抽吸功能不足、自动化程度低等问题,该研究通过多学科技术融合,开发了一种集内外循环清洗(压力≤1 MPa,流量≤5 L/s)、真空抽吸(极限压力100 Pa)及智能测控于一体的新型清洗系统。重点突破模块化机械系统设计、基于PXI总线的测控架构开发、LabVIEW软件创建等关键技术,构建了以LabVIEW为核心的人机交互监控自动化清洗平台。经12次热试车后清洗验证,系统推进剂清洗剂残留浓度(28.8±3.2 mg/m^(3))优于GJB 546B—2011标准42.4%,清洗周期较传统工艺缩短21.7%,为可重复使用液体火箭发动机维护提供关键技术支撑。
To address the deficiencies in conventional post hot-fire test cleaning systems for liquid rocket engines,including the absence of closed-loop circulation,inadequate vacuum suction capabilities,and low automation levels,this study developed a novel integrated cleaning system through multidisciplinary technological integration.The advanced system incorporates internal/external circulation cleaning(pressure≤1 MPa,flow rate≤5 L/s),high-efficiency vacuum suction(ultimate pressure 100 Pa),and intelligent measurement/control functionalities.Key technological breakthroughs were achieved in modular mechanical system design,PXI bus-based measurement/control architecture development,and LabVIEW software platform creation,ultimately establishing an automated cleaning platform with LabVIEW-powered human-machine interaction monitoring.Verification through 12 post hot-fire test cleaning trials demonstrated superior performance:residual propellant cleaning agent concentration(28.8±3.2 mg/m^(3))exceeded GJB 546B—2011 standards by 42.4%,with a 21.7%reduction in cleaning cycle duration compared to conventional processes.This innovation provides critical technical support for reusable liquid rocket engine maintenance.
作者
李慧
孔德斌
谢龙
王杨杰
王开厅
LI Hui;KONG Debin;XIE Long;WANG Yangjie;WANG Kaiting(Shanghai Institute of Space Propulsion,Shanghai 201112,China;Shanghai Engineering Research Center of Space Engine,Shanghai 201112,China)
出处
《工业仪表与自动化装置》
2025年第6期3-8,14,共7页
Industrial Instrumentation & Automation
基金
国家自然科学基金(U21B2088)。
