冲压空气涡轮泵的温控节流孔计算方法

王岩; 殷亚峰; 陈金华; 江培

doi:10.13700/j.bh.1001-5965.2016.0545

冲压空气涡轮泵的温控节流孔计算方法

doi: 10.13700/j.bh.1001-5965.2016.0545

王岩^1, ,,
殷亚峰¹,
陈金华²,
江培²

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

基金项目:

国家自然科学基金 51375029

详细信息

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

通讯作者:
王岩, E-mail:wybuaa@buaa.edu.cn

中图分类号: V245.1
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- 被引次数: 0
出版历程
- 收稿日期: 2016-06-23
- 录用日期: 2016-10-01
- 网络出版日期: 2017-07-20

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

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

Funds:

National Natural Science Foundation of China 51375029

More Information

Corresponding author: WANG Yan, E-mail: wybuaa@buaa.edu.cn

摘要

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。
- 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.
- ram air turbine (RAT) /
- aviation hydraulic pump /
- thermal insulation /
- thermodynamics /
- orifice

HTML全文

图 1 RAT泵保温原理

Figure 1. Thermal insulation theory of RAT pump

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图 2 温控节流孔计算方法

Figure 2. Calculation method of temperature control orifice

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图 3 柱塞副和滑靴副

Figure 3. Plunger pair and slipper pair

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图 4 配油盘副

Figure 4. Oil-distributing pair

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图 5 不同工况下的温控节流孔直径理论值

Figure 5. Theoretical diameters of temperature control orifice under different working conditions

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图 6 加入温控节流孔前后的泵体稳定温度对比

Figure 6. Comparison of equilibrium temperature of pump body before and after assembling temperature control orifice

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图 7 加入温控节流孔前后系统稳定流量对比

Figure 7. Comparison of balanced flow of system before and after assembling temperature control orifice

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表 1 RAT泵系统参数

Table 1. System parameters of RAT pump

参数	参数设定
温控节流孔前油液压强P₀/MPa	28
壳体油液压强P₂/MPa	0.5
温控节流孔温度T₀/℃	60
壳体保温温度T₂/℃	55
机舱环境温度T_out	飞行高度H的函数
油液热容c/(J·(kg·℃)^-1)	1 967.35
对流换热系数α	飞行高度H和舱内风速V的函数

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