飞机液压系统柱塞泵热分析

随着飞机液压系统向高压化、大功率化方向发展，液压系统的发热及温升问题受到了广泛关注。柱塞泵作为液压系统中重要的能量转换装置，对液压系统的功率损失和温度有重大的影响，良好的柱塞泵的热分析对液压系统的热设计和温度控制有重要的意义。然而传统的柱塞泵热分析方法，如平均油温法、软件仿真法和热节点网络法，因不够准确、高效和简洁而不能满足现代飞机液压系统热分析和热设计的相关需求。本文针对飞机液压系统柱塞泵发热的相关问题，采用基于集总参数的热网络分析方法，建立了柱塞泵热网络模型，通过对柱塞泵不同工况下的仿真，验证了模型的有效性和准确性，为柱塞泵及液压系统的热分析提供了参考。

Thermal Analysis of Axial Piston Pump in Aircraft Hydraulic System

With the aircraft hydraulic system developing toward high pressure and high power, the problem of heat and temperature increasing in the hydraulic system has received widespread attention. Axial piston pump, one of the most important energy conversion devices in hydraulic system, has a great contribution to the power loss and temperature increasing. Therefore, a good thermal analysis method for the axial piston pump has an important significance for the thermal design and temperature control of the hydraulic system. Traditional thermal analysis methods for axial piston pump, such as the average oil temperature method, the software simulation method and the thermal network node method, are unable to meet the related requirements of modern aircraft hydraulic system thermal analysis and thermal design, because they are unable to provide accurate, efficient and concise analysis result. In this paper, aiming at the related problems of axial piston pump heating in aircraft hydraulic system, the thermal network model of axial piston pump is established based on the lumped parameter thermal network, and the thermal analysis simulation under different working conditions is conducted, which validates the accuracy and effectiveness of the model and provides a reference for the thermal analysis of axial piston pump and hydraulic system.