偏导射流阀前置级流场计算与分析  

Calculation and Analysis of Flow Field in the Pre-stage of the Deflector-jet Valves

作　　者：王凤聚[1] 李长春[1] 延皓[1] 康硕[1] 黄静[1] 李磊[1] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《液压与气动》2016年第8期74-78,共5页Chinese Hydraulics & Pneumatics

摘　　要：根据射流盘处的结构和液流的实际运动情况,综合考虑射流过程中能量转化过程,提出了偏导射流放大器的二次射流模型,得到偏导射流阀前置级紊动射流的速度分布和时均动能变化,进一步研究了阀芯在中位条件下接收口的压力特性。结果表明了该模型具有合理性,为偏导射流阀的进一步研究提供了理论依据。According to the real structure of the pre-stage and the actual movement of the jet flow, we propose a two-stage turbulent jet model of the deflector-jet amplifier by considering the process of the jet energy conversion. This paper shows the velocity distribution and the mean kinetic energy variation of turbulent jet in the pre-stage of the deflector-jet servo valves. The pressure characteristics of receiver when the spool is in middle position are ob- tained simultaneously. The results indicate the validity of the model, which provides a theoretical basis for further study of the deflector-jet serve valves.

关 键 词：偏导射流伺服阀 前置级 紊动射流 二次射流 

分 类 号：TH137[机械工程—机械制造及自动化]