插装式流量放大阀反馈槽预开量对其性能的影响（英文）  

Influence of the underlap in the poppet valve on its performance

作　　者：郭晓霞 马彦伟 张勇 黄家海 权龙 

机构地区：[1]太原理工大学新型传感器与智能控制教育部与山西省重点实验室,太原030024 [2]太重榆次液压工业有限公司技术中心,山西榆次030600

出　　处：《机床与液压》2015年第24期15-19,共5页Machine Tool & Hydraulics

基　　金：supported by National Natural Science Foundation of China (No.51175362,No.51205271);Specialized Research Fund for the Doctoral Program of Higher Education (No.20121402120002)

摘　　要：基于流量反馈原理的Valvistor插装阀具有低泄漏、通流能力强、结构简单等优点,已被广泛应用于液压系统中,主阀反馈槽预开量对其通流能力及静态性能有显著影响。使用Simulation X建立了16通径Valvistor阀的仿真模型,通过实验验证了仿真模型的正确性,详细研究了反馈窄槽预开口量对阀芯性能的影响,结果表明:为了提高阀芯稳定性及使阀芯关闭,主阀反馈槽必须增加预开口量,但预开口量的增加会导致阀芯出现死区,同时降低了阀芯通流能力,研究结果为Valvistor阀性能的进一步提高提供了依据。Valvistor valve adopted the flow feedback principle has many benefits including low leakage and big flow capacity and an economical design and has been widely used in hydraulic systems. The underlap in the poppet valve has a significant effect on the flow capacity and static performance. In this paper,the simulation model of valvistor valve was established by using the simulation software—Simulation X. Experiments were made to validate the simulation model. The effects of different underlap in the poppet on performance of the spoolwerecompared. The results show that the underlap in the poppet valve always has to increasethe pre-opening amount to guarantee the stability,but the underlap will reduce the flow capacity of the valve. The results provide a theoretical basis for the performance improvement of the valve.

关 键 词：Cartridge valve  FLOW amplifier  Underlap in the SLOT 

分 类 号：TH137.5[机械工程—机械制造及自动化]