北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (7): 1287-1292.doi: 10.13700/j.bh.1001-5965.2016.0545

• 论文 • 上一篇    下一篇

冲压空气涡轮泵的温控节流孔计算方法

王岩1, 殷亚峰1, 陈金华2, 江培2   

  1. 1. 北京航空航天大学 交通科学与工程学院, 北京 100083;
    2. 航空工业金城南京机电液压工程研究中心, 南京 211106
  • 收稿日期:2016-06-23 修回日期:2016-10-01 出版日期:2017-07-20 发布日期:2016-12-13
  • 通讯作者: 王岩,E-mail:wybuaa@buaa.edu.cn E-mail:wybuaa@buaa.edu.cn
  • 作者简介:王岩 男,博士,副教授,硕士生导师。主要研究方向:液压系统控制、热管理等。
  • 基金资助:
    国家自然科学基金(51375029)

A calculation method for temperature control orifice of ram air turbine pump

WANG Yan1, YIN Yafeng1, CHEN Jinhua2, JIANG Pei2   

  1. 1. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;
    2. AVIC Jincheng Nanjing Engineering Institute of Aircraft System, Nanjing 211106, China
  • Received:2016-06-23 Revised:2016-10-01 Online:2017-07-20 Published:2016-12-13
  • Supported by:
    National Natural Science Foundation of China (51375029)

摘要: 冲压空气涡轮(RAT)泵将涡轮输出的机械能转换为液压能用以操控飞机舵面,其快速起动是飞机安全的最后保证。长时间处于低温大气环境,液压油的高黏性阻碍了液压泵的快速起动,将飞机主液压系统的高压油液引入RAT泵是解决该问题的有效方法。本文以RAT泵为研究对象,探究RAT泵的最小温控节流孔计算方法。首先,阐述RAT泵待机状态下通过温控节流孔保温原理,提出温控节流孔的孔径计算方法;其次,建立RAT泵热力学模型,推导温控节流孔的孔径计算公式;然后,基于MATLAB平台搭建RAT泵温控系统热力学模型;最后,通过仿真计算,由仿真结果验证本文所提出的温控节流孔计算方法的正确性,且节能效果显著。

关键词: 冲压空气涡轮(RAT), 航空液压泵, 保温, 热力学, 节流孔

Abstract: Ram air turbine (RAT) pump, by transforming the mechanical energy into hydraulic energy, can be used to control the aircraft rudder in emergency situation. Its performance of rapid response is critical to ensure the aircraft's safety. Exposed to low-temperature atmosphere for long time, the high viscosity of hydraulic oil will hinder the rapid start of the hydraulic pump, and an effective method for this problem is to introduce the high-pressure oil into aircraft RAT pump from the main hydraulic system. Taking RAT pump as research object, this paper explores the calculation method of minimum temperature control orifice for the RAT pump. First, it explains the thermal insulation theory of the RAT pump which is equipped with temperature control orifice in standby mode and proposes an algorithm of the orifice. Second, it establishes RAT pump's thermodynamic model and deduces the calculation formula of the orifice's diameter. Next, it establishes temperature control system's thermodynamic model with MATLAB and calculates the results. Finally, it verifies the correctness of the algorithm through simulation calculation, and energy saving effect is remarkable.

Key words: ram air turbine (RAT), aviation hydraulic pump, thermal insulation, thermodynamics, orifice

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