Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (4): 1203-1211.doi: 10.13229/j.cnki.jdxbgxb20180105

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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

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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

CLC Number: 

  • TH122

Fig.1

Schematic diagram of hot oil carrying of oil pad"

Fig.2

Size of single oil pad"

Fig.3

Single oil film model"

Fig.4

Oil film mesh"

Table 1

Theoretical value of hot oil carrying factor"

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

Fig.5

Location diagram of line1"

Fig.6

Temperature rise in 0 t and 4 r/min"

Fig.7

Temperature rise in 32 t and 4 r/min"

Fig.8

Temperature rise in 0 t and 60 r/min"

Fig.9

Temperature rise in 32 t and 60 r/min"

Fig.10

Maximum temperature rise on line1 under 4 r/min"

Fig.11

Maximum temperature rise on line1 under 60 r/min"

Fig.12

Temperature rise curve under different rotating speeds and load of 0 t"

Fig.13

Temperature rise curve under different rotating speeds and load of 16 t"

Fig.14

QI?205 experimental bench equipment"

Fig.15

Fan ring cavity static pressure guide"

Fig.16

Temperature sensor layout scheme"

Fig.17

Multi?channel digital instrument"

Fig.18

Temperature rise curve under rotating speed of 4 r/min"

Fig.19

Temperature rise curve under rotating speed of 60 r/min"

Fig.20

Temperature rise curve under load of 0 t"

Fig.21

Temperature rise curve under load of 8 t"

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