采用双向流固耦合的胀圈密封功率损失预测模型  

Prediction Model of Power Loss of Expansion Seal Ring Based on Two-Way Fluid-Structure Interaction

作　　者：冯伟[1] 胡帅 宫武旗[1] 邹天刚[2] 桂鹏[2] FENG Wei;HU Shuai;GONG Wuqi;ZOU Tiangang;GUI Peng(School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China;Science and Technology on Vehicle Transmission Laboratory,China North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]西安交通大学能源与动力工程学院,西安710049 [2]中国北方车辆研究所车辆传动重点实验室,北京100072

出　　处：《西安交通大学学报》2024年第3期69-81,共13页Journal of Xi'an Jiaotong University

基　　金：国防军工重点资助项目(20195208003)。

摘　　要：针对现存胀圈密封功率损失模型不能准测预测出实际运行时密封环的功率损失的问题,提出了新的胀圈密封功率损失预测模型。基于ANSYS Workbench平台建立了包括转轴、配油套及胀圈密封环在内的双向流固耦合数值计算模型,设计并搭建了胀圈密封性能试验系统,验证了数值模拟的准确性。通过多元线性回归方法构建了包含油液动力黏度、密封压差、转轴转速以及胀圈密封结构主要尺寸参数的功率损失预测模型,比现存模型包含更多影响因素。分析结果表明:模型预测值与试验值的相对误差在9%以内,满足工业应用要求;功率损失对各影响因素的敏感度由强到弱依次为:密封压差、温度、转速,且密封压差对胀圈密封功率损失影响高度显著。To address the issue of existing power loss models’inability to accurately predict the power loss of a working seal ring,a new power loss prediction model is proposed for the expansion seal ring.A two-way fluid-structure interaction numerical calculation model,including the shaft,the oil distribution sleeve,and the expansion seal ring,is established using the ANSYS Workbench platform.Additionally,an expansion seal ring performance test system is designed and built to verify the accuracy of the numerical simulation.A power loss prediction model is constructed using the multiple linear regression method,incorporating the viscosity of the hydraulic fluid,seal differential pressure,shaft speed,and main dimensional parameters of the expansion seal ring structure.This model includes more influencing factors compared to existing models.The analysis results indicate that the relative error between the predicted values of the model and experimental values is within 9%,which meets the requirements of industrial application.The sensitivity of power loss to the influencing factors,from strong to weak,is as follows:seal differential pressure,temperature,and shaft speed.The seal differential pressure has a significant effect on the power loss of the expansion seal ring.

关 键 词：胀圈密封 功率损失 线性回归 正交试验 数值计算 

分 类 号：TB42[一般工业技术]