吉林大学学报(工学版) ›› 2019, Vol. 49 ›› Issue (4): 1203-1211.doi: 10.13229/j.cnki.jdxbgxb20180105

• • 上一篇    

基于热油携带的静压支承油膜温度场及试验

张艳芹1,2(),冯雅楠1,孔鹏睿1,于晓东1,孔祥滨1   

  1. 1. 哈尔滨理工大学 机械动力工程学院,哈尔滨 150080
    2. 南京工程学院 机械工程学院,南京 211167
  • 收稿日期:2018-02-11 出版日期:2019-07-01 发布日期:2019-07-16
  • 作者简介:张艳芹(1981-),女,教授,博士. 研究方向: 润滑理论. E-mail:yanqin.zhang@hrbust.edu.cn
  • 基金资助:
    黑龙江省自然科学基金项目(E2017048);黑龙江省普通高校基本科研业务费专项资金项目(LGYC2018JC043)

Temperature field and experiment of hydrostatic bearing oil film based on hot oil carrying

Yan-qin ZHANG1,2(),Ya-nan FENG1,Peng-rui KONG1,Xiao-dong YU1,Xiang-bin KONG1   

  1. 1. College of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China
    2. College of Mechanical Engineering, Nanjing Institute of Technology, Nanjing 211167, China
  • Received:2018-02-11 Online:2019-07-01 Published:2019-07-16

摘要:

为了更加准确地阐明静压支承油膜发热机理,提出了一种考虑热油携带的油膜温升计算方法。定义了油膜热油携带因子并推导出表达式,从理论上对不同工况条件扇环腔油垫是否发生热油携带进行了判定。建立了热油携带影响下供油温升方程,采用有限体积法进行油膜温度场模拟,得到不同工况条件下考虑热油携带的油膜温升曲线,并与试验结果进行对比分析,吻合较好。结果表明:针对本结构静压支承,当转速小于10 r/min时,任何载荷工况下均无热油携带发生;当转速大于60 r/min时,在整个载荷范围(0~32 t)内均有热油携带现象发生。当发生热油携带时,油膜温升加剧,且转速对温升的影响比载荷对温升的影响更明显。

关键词: 机械设计, 静压支承, 热油携带, 温度场, 扇环腔

Abstract:

For clarifying the heat generation mechanism of hydrostatic bearing oil film accurately, a calculation method of the oil film temperature is proposed, which considered the influence of hot-oil-carrying(HOC) . The factor of HOC was defined and deduced, and the occurring conditions was determined theoretically when the phenomenon of HOC appears. The temperature rise equation of lube feeding under the influence was established. The finite volume method was used to simulate the temperature field of the film. The temperature rise curves of oil film under different working conditions was obtained, which were in good agreement with the experimental results. The results show that, for this structure bearings, the phenomenon doesn't appear under any load condition when the rotating speed is less than 10 r/min. When the rotating speed is greater than 60r / min, the phenomenon occurs in the entire load range, from 0 t to 32 t. The temperature rise of the film is aggravated, while the phonmenon of HOC occurs, and the rotation speed affects the temperature rise more than the load does.

Key words: mechanic design, hydrostatic bearing, hot oil carrying, temperature field, fan ring cavity

中图分类号: 

  • TH122

图1

油垫热油携带示意图"

图2

单油垫几何尺寸"

图3

单个油膜模型"

图4

油膜网格划分"

表1

不同工况下热油携带因子的理论值"

载荷

/t

转速/( r·min-1)
4 10 20 30 40 50 60
0 0.0 0.0 30.2 47.3 57.7 64.7 69.7
4 0.0 0.0 10.8 30.2 42.6 51.3 57.7
8 0.0 0.0 0.0 16.6 30.2 40.0 47.3
12 0.0 0.0 0.0 5.6 19.7 30.2 38.2
16 0.0 0.0 0.0 0.0 10.8 21.7 30.2
20 0.0 0.0 0.0 0.0 3.2 14.2 23.0
24 0.0 0.0 0.0 0.0 0.0 7.6 16.6
28 0.0 0.0 0.0 0.0 0.0 1.8 10.8
32 0.0 0.0 0.0 0.0 0.0 0.0 5.6

图5

line1位置图"

图6

转速为4 r/min、外载为0 t时的温度曲线"

图7

转速为4 r/min、外载为32 t时的温度曲线"

图8

转速为60 r/min、外载为0 t时的温度曲线"

图9

转速60 r/min外载32 t时温度曲线"

图10

转速为4 r/min时,line1上油垫封油边油膜最大温升"

图11

转速为60 r/min时,line1上油垫封油边油膜最大温升"

图12

工作台外载为0 t、不同转速时的温升曲线"

图13

工作台外载为16 t、不同转速时的温升曲线"

图14

实验工作台Q1?205"

图15

扇环腔静压导轨"

图16

温度传感器布置方案"

图17

多通道数字式仪表"

图18

工作台转速为4 r/min时的温升曲线"

图19

工作台转速为60 r/min时的温升曲线"

图20

工作台载荷为0 t时的温升曲线"

图21

工作台外载8 t时温升曲线"

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