一种低内漏喷嘴挡板压力伺服阀的探索研究  

Research on a Pressure Servo Valve with Low Internal Leakage for Flapper-Nozzle Structure

作　　者：孙静 牛祖军 陈国慧 李婷 SUN Jing;NIU Zujun;CHEN Guohui;LI Ting(Xi'an Brake Branch,AVIC Aircraft Co.,Ltd.,Xi'an Shaanxi 710065,China)

机构地区：[1]中航飞机股份有限公司西安制动分公司,陕西西安710065

出　　处：《机床与液压》2023年第16期76-80,共5页Machine Tool & Hydraulics

摘　　要：基于某型民用飞机系统架构,根据运输类飞机适航标准CCAR25部中25.735条的(h)条款关于储备能源的要求,当应急刹车系统使用刹车控制阀作为执行机构,输出与驾驶员脚蹬指令成比例的输出压力给刹车装置,应急系统中核心部件喷嘴挡板压力伺服阀的内漏将直接影响储备能源蓄压器容积的选择。根据SAE AIR5372A相关标准,一种低内漏单喷嘴阀结构压力伺服阀已在国外民用飞机刹车系统中使用。对传统四通结构和最新单喷嘴阀结构进行深入研究,对比说明单喷嘴阀在内漏、滑阀级驱动力、滑阀级零件制造及组件装配的工艺性改善等方面的优势,和传统国产阀相比,在性能稳定性、抗污染能力及整产品的可靠性方面有所提升。Based on the system architecture of a certain civil aircraft,according to the requirements of the reserved energy in article(h)of article 25.735 of CCAR25 of the airworthiness standard for transport aircraft,when the emergency brake system uses the brake control valve as the actuator,the output pressure is proportional to the pilot's pedal command to the brakes.The internal leakage of the flapper-nozzle pressure servo valve core component of the emergency system will directly affect the selection of the reserve energy accumulator volume.According to the SAE AIR5372A standards,a pressure servo valve with a single nozzle valve structure with low internal leakage has been used in foreign civil aircraft brake systems.The traditional four-way structure and the latest single nozzle valve structure were studied deeply.The advantages of the single nozzle valve in internal leakage,slide valve level driving force,slide valve level parts manufacturing and assembly process improvement were compared with the traditional domestic valve.It is improved in the performance stability,anti-pollution ability and reliability of the whole product.

关 键 词：单喷嘴挡板压力伺服阀 储备能源 内漏 性能稳定性 抗污染能力 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]