摘要
为了研究机械密封端面槽腔耦合造型对性能的影响,以获得最佳槽腔耦合方式,建立了4个不同槽腔耦合方案和1个无开腔上游泵送密封方案的物理模型和计算模型,利用Fluent空化模型进行内流场计算和分析,并进行试验验证.研究表明:不是任意的槽腔耦合方式都能增强密封环的开启性和稳定性,对于所研究的密封结构和尺寸,相比于未加工微凹腔的上游泵送机械密封环,只有将微凹腔开设在动环坝区时才能够增强密封环的开启性和稳定性,且具有较低的摩擦力;转速越高,合理的槽腔耦合机械密封增强开启性和稳定性的优势越明显.
To achieve optimum coupling style of mechanical seal with spiral groove and micro-pores, geo- metrical and computational models of four kinds of micro-pores distributing at different location of spiral seal face were investigated. The fluid film between seal faces was simulated based on cavitation by Fluent method. The four coupling schemes were verified by experiment and compared with spiral seal face. The simulated results show that not all coupling styles can improve opening performance and stability of the fluid film. When the micro-pores are only located in the dam area of rotational ring, the opening force and the stability are increased with decreased friction torque, and the performance improves with the in- creasing of rotational speed. The advantage of optimum coupling seal face is more obvious than that of spiral face under higher shaft speed.
出处
《江苏大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2015年第1期43-47,共5页
Journal of Jiangsu University：Natural Science Edition
基金
国家自然科学基金资助项目(51279067)
航空科学基金资助项目(201328R3001)
关键词
机械密封
槽腔耦合方式
空化
开启性
稳定性
mechanical seal
coupling style of spiral groove and micro-pores
cavitation
opening force
stability
