摘要
针对航空发动机燃油增压泵接触式机械密封润滑失效问题,通过多物理场耦合仿真和试验分析人字槽液膜密封用于燃油增压泵的可行性。基于考虑粗糙度的雷诺方程、能量方程和热传导方程建立液膜密封多物理场模型,分析密封温度特性、泄漏特性等关键性能参数,并针对人字槽液膜密封开展密封性能试验研究。结果表明:与平端面接触式机械密封相比,人字槽型密封端面平均温度降低约50℃,有利于密封运行稳定性的提高;试验运行过程中密封各处温度稳定,泄漏量为0,满足燃油增压泵对密封的性能要求。
Aiming at the lubrication failure of the contacting mechanical seal of the fuel booster pump,the feasibility of the herringbone groove liquid film seal used in the fuel booster pump was analyzed through multi-physics coupling simulation and experiment.Based on the Reynolds equation considering roughness,energy equation and heat conduction equation,a multi-physics model of liquid film seal was established,and the key performances parameters such as temperature characteristics and leakage characteristics of the seal were analyzed.The sealing performance test was carried out for the herringbone groove liquid film seal.The results show that the average temperature of the herringbone groove seal end face is about 50℃lower than that of the contacting mechanical seal,which is beneficial to the improvement of the seal operation stability.During the test operation,the temperature of the seal is stable,and the leakage is zero,which meets the requirements of the sealing performance for fuel booster pump.
作者
任宝杰
郝木明
胡广阳
王铭章
苏志善
李勇凡
REN Baojie;HAO Muming;HU Guangyang;WANG Mingzhang;SU Zhishan;LI Yongfan(Dongying Hiscien Sealing Technology Co.,Ltd.,Dongying Shandong 257000,China;College of New Energy,China University of Petroleum,Qingdao Shandong 266580,China;Key Laboratory of Aeroengine Power Transmission of AECC,Shenyang Liaoning 110015,China;AECC Xi’an Engine Control Co.,Ltd.,Xi’an Shaanxi 710077,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2022年第12期75-82,共8页
Lubrication Engineering
基金
国家自然科学基金项目(51975585)。
关键词
多物理场耦合
液膜密封
人字槽
燃油增压泵
multi-physics coupling
liquid film seal
herringbone groove
fuel booster pump
