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Unit Model Number机组型号:____________________________________________
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Unit Serial Number机组序列号:___________________________________________
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Reason for Teardown大修原因:___________________________________________
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Disassembly 拆卸= 1-36
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Ref #
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Clearances & Torque’s
间隙与力矩
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||||
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Reassembly 组装 = (1)-(36)
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Nominal
额定
|
Disassembly
拆卸
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Reassembly
组装
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1. Remove tang operator, 1st stage vane assembly. 拆除导叶执行器，1级导叶组件
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1
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(36). Install tang operator, 1st stage vane assembly安装导叶执行器，1级导叶组件
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(36a). CAPSCREW TORQUE 螺栓力矩
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14 Ft Lbs.
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____Ft Lbs.
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||||
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2. Remove 1st stage inlet vane assembly.拆除1级进气导叶组件
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2
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(35). Install 1st stage inlet vane assembly.安装1级进气导叶组件
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3. Measure 1st stage impeller nose seal clearance. (Radial)检测1级叶轮端部密封间隙 ---径向
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________”
(See Table 1)
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12 Hr ______”
6 Hr _______”
3 Hr _______”
9 Hr _______”
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|||
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(34). Measure/set 1st stage impeller nose seal. 检测/设置1级叶轮端部密封
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A
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12 Hr ________”
6 Hr _________”
3 Hr _________”
9 Hr _________”
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|||
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(34a). NOSE SEAL BOLT TORQUE端部密封螺栓力矩
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24 Ft Lbs.
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____Ft Lbs.
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|||
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4. Remove 1st stage impeller nose seal.拆除1级叶轮端部密封
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3
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(33). Install 1st stage impeller nose seal.安装1级叶轮端部密封
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5. Remove 1st stage suction cover拆除1级吸气蜗壳
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(32). Install 1st stage suction cover安装1级吸气蜗壳
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4
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(32a). SUCTION COVER BOLT TORQUE.吸气蜗壳螺栓力矩
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150 Ft Lbs.
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____Ft Lbs.
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|||
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6. Measure 1st stage impeller nose runout.检测1级叶轮端部径向跳动
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A
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< 0.0035”
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______” TIR
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(31). Measure 1st stage impeller nose runout.检测1级叶轮端部径向跳动
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______” TIR
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|||
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7. Measure detail “A” clearances for 1st stage impeller.检测1级叶轮间隙---参看备注A
( See Page 6参看第6页)
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S
R
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Flush/+0.005”
0.022” min radial centered
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_________”
12 Hr ______”
6 Hr _______”
3 Hr _______”
9 Hr _______”
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|||
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Disassembly 拆卸 = 1-36
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Ref #
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Clearances & Torque’s
|
||||
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Reassembly 组装= (1)-(36)
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Nominal
|
Disassembly
|
Reassembly
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||
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8. Remove impeller lock nut, lockwasher & spring washer. 拆除叶轮防松螺母、防松垫圈及弹簧垫圈
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(30). Install impeller lock nut, lockwasher & spring washer.安装叶轮防松螺母、防松垫圈及弹簧垫圈
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5
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(30a). LOCKNUT TORQUE防松螺母力矩
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115 Ft Lbs.
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_____Ft Lbs.
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|||
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9. Remove 1st stage impeller 拆除1级叶轮
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6
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(29). Install 1st stage impeller. 安装1级叶轮
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10. Measure shaft runout.检测轴径向跳动
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<0.0012” TIR
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______” TIR
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|||
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11. Measure 1st stage shaft seal clearance. 检测一级轴封间隙
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B
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0.018/0.024”
(Radial)
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12 Hr ______”
6 Hr _______”
3 Hr _______”
9 Hr _______”
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|||
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(28). Measure/set 1st stage shaft seal clearance. 检测/设置1级轴封间隙
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12 Hr ________”
6 Hr _________”
3 Hr _________”
9 Hr _________”
|
|||
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(28a). SHAFT SEAL BOLT TORQUE轴封螺栓力矩
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24 Ft Lbs.
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____Ft Lbs.
|
||
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12. Remove 1st stage shaft seal. 拆除1级轴封
|
7
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(27). Install 1st stage shaft seal. 安装1级轴封
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(26). Measure/set detail “A” clearances for 1st stage impeller. 检测/设置1级叶轮间隙---参看备注A
|
S
R
|
Flush/+.005”
0.022” min
radial
centered
|
|
_________”
12 Hr ________”
6 Hr _________”
3 Hr _________”
9 Hr _________”
|
|||
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(26a). DIFFUSER PLATE BOLT TORQUE. 扩压平板螺栓力矩
|
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24 Ft Lbs.
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____Ft Lbs.
|
|||
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13. Remove 1st stage shaft impeller spacer拆除1级叶轮定距轴套
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8
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|||
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(25). Install 1st stage shaft impeller spacer.安装1级叶轮定距轴套
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|||
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14. Remove 1st stage diffuser plate.拆除1级扩压平板
|
9
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(24). Install 1st stage diffuser plate.安装1级扩压平板
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15. Remove 2nd stage shroud assembly. 拆除2级吸气盖板
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|||
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(23). Install 2nd stage shroud assembly. 安装2级吸气盖板
|
10
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|
|||
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(23a). 2ND STAGE SHROUD BOLT TORQUE. 两级吸气盖板螺栓力矩
|
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6 Ft Lbs.
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_____Ft Lbs.
|
|||
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16. Measure 2nd stage impeller nose seal clearance. 检测2级叶轮端部密封间隙
|
C
|
_______”
(See Table 1)
|
12 Hr ______”
6 Hr _______”
3 Hr _______”
9 Hr _______”
|
|
|||
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(22). Measure/set 2nd stage impeller nose seal clearance. 检测/设置2级叶轮端部密封间隙
|
|
|
|
12 Hr ________”
6 Hr _________”
3 Hr _________”
9 Hr _________”
|
|||
|
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(22a). NOSE SEAL BOLT TORQUE端部密封间隙螺栓力矩
|
|
24 Ft Lbs.
|
|
____Ft Lbs.
|
||
|
|
|
|
|
|
|
||
|
|
Disassembly 拆卸 = 1-36
|
Ref #
|
Clearances & Torque’s
|
||||
|
|
Reassembly 组装 = (1)-(36)
|
|
Nominal
|
Disassembly
|
Reassembly
|
||
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17. Remove 2nd stage impeller nose seal. 拆除2级叶轮端部密封
|
|
|
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|
|||
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(21). Install 2nd stage impeller nose seal. 安装2级叶轮端部密封
|
11
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|
|||
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18. Remove 2nd stage suction cover.
拆除2级吸气涡壳
|
|
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|
|||
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(20). Install 2nd stage suction cover.
安装2级吸气蜗壳
|
12
|
|
|
|
|||
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(20a). SUCTION COVER BOLT TORQUE. 2级吸气涡壳螺栓力矩
|
|
150 Ft Lbs.
|
|
_____ Ft Lbs.
|
|||
|
19. Measure 2nd stage impeller nose runout. 检测2级叶轮端部径向跳动
|
|
< 0.0035’ TIR
|
______” TIR
|
|
|||
|
(19). Measure 2nd stage impeller nose runout.检测2级叶轮端部径向跳动
|
C
|
|
|
______” TIR
|
|||
|
20. Measure detail “A” clearances of 2nd stage impeller. 检测2级叶轮间隙---参看备注A
(See Page 6 参看第6页)
|
S
R
|
Flush/+.005”
0.022” min
radial
centered
|
_________”
12 Hr ______”
6 Hr _______”
3 Hr _______”
9 Hr _______”
|
|
|||
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21. Remove 2nd stage impeller. 拆除2级叶轮
|
13
|
|
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|
|||
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(18). Install 2nd stage impeller. 安装2级叶轮
|
|
|
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|
|||
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22. Measure 2nd stage shaft seal clearance.检测2级轴封间隙
|
|
0.018/0.024”
(Radial)
|
12 Hr ______”
6 Hr _______”
3 Hr _______”
9 Hr _______”
|
|
|||
|
(17). Measure/set 2nd stage shaft seal clearance. 检测/设置2级轴封间隙
|
D
|
|
|
12 Hr ________”
6 Hr _________”
3 Hr _________”
9 Hr _________”
|
|||
|
|
(17a). SHAFT SEAL BOLT TORQUE轴封螺栓力矩
|
|
24 Ft Lbs.
|
|
____Ft Lbs.
|
||
|
23. Remove 2nd stage shaft seal. 拆除2级轴封
|
14
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|
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|
|||
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(16). Install 2nd stage shaft seal.安装2级轴封
|
|
|
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|
|||
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(15). Measure/set detail “A” clearances of 2nd stage impeller. 检测/设置2级叶轮间隙---参看备注A
(See Page 6 参看第6页)
|
S
R
|
Flush/+.005”
0.022” min
radial
centered
|
|
_________”
12 Hr ________”
6 Hr _________”
3 Hr _________”
9 Hr _________”
|
|||
|
(15a). 2ND STAGE DIFFUSER BOLT TORQUE. 2级扩压平板螺栓力矩
|
|
24 Ft Lbs.
|
|
____Ft Lbs.
|
|||
|
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24. Remove 2nd stage shaft impeller spacer.拆除2级叶轮定距轴套
|
15
|
|
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|
||
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(14). Install 2nd stage shaft impeller spacer. 安装2级叶轮定距轴套
|
|
|
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|
|||
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|
||
|
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|
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|
||
|
|
Disassembly 拆卸 = 1-36
|
Ref #
|
Clearances & Torque’s
|
||||
|
|
Reassembly 组装 = (1)-(36)
|
|
Nominal
|
Disassembly
|
Reassembly
|
||
|
25. Remove 2nd stage diffuser plate.拆除2级扩压平板
|
16
|
|
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|
|||
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(13). Install 2nd stage diffuser plate安装2级扩压平板
|
|
|
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|
|||
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26. Remove 3rd stage vane operator assembly.拆除3级导叶执行器组件
|
|
|
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|
|||
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(12). Install 3rd stage vane operator assembly. 安装3级导叶执行器组件
|
17
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|
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|
|||
|
(12a). VANE OPERATOR BOLT TORQUE导叶执行器螺栓力矩
|
|
60 Ft Lbs. or
gkt extrudes
|
|
_____ Ft Lbs.
|
|||
|
27. Remove 3rd stage shroud and vane assembly.拆除3级吸气盖板及导叶组件
|
|
|
|
|
|||
|
(11). Install 3rd stage shroud and vane assembly. 安装3级吸气盖板及导叶组件
|
18
|
|
|
|
|||
|
(11a). 3RD STAGE SHROUD BOLT TORQUE三级吸气盖板螺栓力矩
|
|
6 Ft Lbs.
|
|
_____ Ft Lbs.
|
|||
|
28. Measure 3rd stage impeller nose seal clearance.检测3级叶轮端部密封间隙
|
|
______”
(See Table 1)
|
12 Hr ______”
6 Hr _______”
3 Hr _______”
9 Hr _______”
|
|
|||
|
(10). Measure/set 3rd stage impeller nose seal clearance. 检测/设置3级叶轮端部密封间隙
|
E
|
|
|
12 Hr ________”
6 Hr _________”
3 Hr _________”
9 Hr _________”
|
|||
|
|
(10a). NOSE SEAL BOLT TORQUE端部密封间隙螺栓力矩
|
|
24 Ft Lbs.
|
|
____Ft Lbs.
|
||
|
29. Remove 3rd stage impeller nose seal.拆除3级叶轮端部密封
|
19
|
|
|
|
|||
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(9). Install 3rd stage impeller nose seal. 安装3级叶轮端部密封
|
|
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|
|||
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30. Remove 3rd stage suction cover casing.拆除3级吸气蜗壳
|
|
|
|
|
|||
|
(8). Install 3rd stage suction cover casing.安装3级吸气蜗壳
|
20
|
|
|
|
|||
|
(8a). SUCTION COVER BOLT TORQUE三级吸气蜗壳螺栓力矩
|
|
150 Ft Lbs.
|
|
_____ Ft Lbs.
|
|||
|
31. Measure 3rd stage impeller nose runout.检测3级叶轮端部径向跳动
|
E
|
< 0.0035” TIR
|
______” TIR
|
|
|||
|
(7). Measure 3rd stage impeller nose runout. .检测3级叶轮端部径向跳动
|
|
|
|
______” TIR
|
|||
|
32. Measure detail “A” clearances of 3rd stage impeller. 检测三级叶轮间隙---参看备注A
(See Page 6参看第6页)
|
S
R
|
Flush/+.005”
0.022” min
radial
centered
|
_________”
12 Hr ______”
6 Hr _______”
3 Hr _______”
9 Hr _______”
|
|
|||
|
(6). Install 3rd stage and impeller.安装3级叶轮
|
|
|
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|
|||
|
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|
||
|
|
Disassembly 拆卸 = 1-36
|
Ref #
|
Clearances & Torque’s
|
||||
|
|
Reassembly 组装 = (1)-(36)
|
|
Nominal
|
Disassembly
|
Reassembly
|
||
|
33. Remove 3rd stage impeller. 拆除3级叶轮
|
21
|
|
|
|
|||
|
34. Measure bearing oil seal clearance.检测轴承油封间隙
|
F
|
0.002/0.004”
(Radial)
|
12 Hr ______”
6 Hr _______”
3 Hr _______”
9 Hr _______”
|
|
|||
|
(5). Measure/set bearing oil seal clearance.检测/设置轴承油封间隙
|
|
0.002/0.004”
(Radial)
|
|
12 Hr ________”
6 Hr _________”
3 Hr _________”
9 Hr _________”
|
|||
|
(5a). OIL SEAL BOLT TORQUE油封螺栓力矩
|
|
24 Ft Lbs.
|
|
_____ Ft Lbs.
|
|||
|
(4). Measure/set detail “A” clearances of 3rd stage impeller. 检测/设置3级叶轮间隙---参看备注A
(See Page 6 参看第6页)
|
S
R
|
Flush/+.005”
0.022” min
radial
centered
|
|
_________”
12 Hr ________”
6 Hr _________”
3 Hr _________”
9 Hr _________”
|
|||
|
|
(4a). DIFFUSER PLATE BOLT TORQUE 扩压平板螺栓力矩
|
|
24 Ft Lbs.
|
|
_____Ft Lbs.
|
||
|
35. Remove bearing oil seal and gasket. 拆除轴承油封及垫圈
|
22
|
|
|
|
|||
|
(3). Install bearing oil seal and gasket 安装轴承油封及垫圈
|
|
|
|
|
|||
|
36. Remove bearing oil seal mounting plate and gasket.拆除轴承油封固定盘及垫圈
|
|
|
|
|
|||
|
(2). Install 3rd stage diffuser plate,bearing oil seal mounting plate and gasket.安装3级扩压平板，轴承油封固定盘及垫圈
|
23
|
|
|
|
|||
|
(2a). SEAL MOUNTING BOLT TORQUE油封固定盘螺栓力矩
|
|
24 Ft Lbs.
|
|
_____Ft Lbs.
|
|||
|
|
(1). Measure motor shaft runout检测电机轴径向跳动
|
|
< 0.0012” TIR
|
|
_____” TIR
|
||
|
CVHE/F/G 止推轴承安装/拆卸程序
|
||||||||
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机组型号：
|
|
|||||||
|
机组编号：
|
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|||||||
|
更换轴承原因：
|
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|||||||
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警告：小心电气伤害
进行此项工作或者在其它电器设备上进行操作之前，一定要切断电源。否则可能会由于电机或者部件转动造成严重的人身伤害甚至死亡 |
||||||||
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拆卸
|
|
|
|
||
|
第1步
|
释放压缩机的压力或真空、回收内部充注物
|
|
|
|||||
|
如果压缩机安装在机组上，要先将冷媒回收，然后将机组抽真空并充干燥氮气
|
||||||||
|
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|
第2步
|
在轴承端盖上钻两个1/4英寸的孔
|
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|
|||||
|
拆卸电机或压缩机时为了保证部件找准定位，在轴承端盖上钻两个1/4英寸的孔以便在拆卸时安装导杆。
|
||||||||
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第3步
|
拆除供油管和排油管
|
|
|
|||||
|
|
拆除供油管和排油管。如果需要（用管割刀）切断管路，应首先用砂纸祛除管路上的油漆。
工作期间所有开口必须包扎以防止杂质进入润滑系统 |
|||||||
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第4步
|
拆除轴承视镜板
|
|
|
|||||
|
拆除轴承视镜板。拆除旧的O型圈并清洗密封面。
|
||||||||
|
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|
第5步
|
拆除止推轴承的防松螺母和锁紧垫圈
|
|
|
|||||
|
拆除止推轴承的锁紧垫圈和防松螺母。扳平锁紧垫圈的突舌，用套管扳手和套管工具拆除防松螺母。
|
||||||||
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第6步
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拆除轴承端盖的两个螺栓并安装两根导杆
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松开轴承端盖固定螺栓。拆除两个螺栓并用两根导杆代替，用于支撑轴承端盖和电机轴的重量。
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第7步
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拆除轴承固定螺栓及轴承环
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拆除四个9/16英寸的螺栓以及轴承环。
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第8步
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拆除轴承密封板的所有六角螺栓
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拆除八个3/8-16英寸固定轴承密封的六角螺栓
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第9步
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拆除轴承端盖剩余的螺栓
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拆除固定轴承端盖的螺栓。其中有两个短螺栓是用于电气端子盒，要注意做好标记以便正确安装。
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第10步
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从轴承套上分离轴承端盖
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在定位螺栓孔中安装三根导杆以便拆卸轴承端盖板。将其它螺栓在容器中放好。缓慢均匀地转动导杆，
将轴承端盖板从外侧滚珠轴承中分离出来。 |
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第11步
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拆除轴承端盖
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用U形钩或吊环起吊轴承端盖。轴承端盖必须从上部支撑（用吊带或类似的东西）。轻轻地前后移动将轴承端盖从轴承套上分离出来。（在轴承端盖移出大概1/2英寸时）密封面拆除后拆除轴承端盖时会稍稍往下掉。
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警告：当心重物砸伤。
不要在倒链螺栓孔上使用吊环。吊环不是用于水平起吊的，否则可能会断裂造成伤害。 |
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第12步
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移走轴承端盖
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一但密封面拆除轴承端盖会下降直至转子支撑在定子上（参见警告）。将轴承端盖完全拆除。
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警告：当心损坏定子
要特别小心避免轴承端盖卡在轴承上，也要避免转子移动造成对定子组件的损坏。 警告：小心眼睛和头受伤 轴承端盖拆除后要立即拆除导杆，防止人走近而受伤 |
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第13步
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拆除止推轴承
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用拉轴承的专业工具拆除止推轴承。工具要安装在轴承内侧轴承套的后侧以防止损坏轴承和轴。拆卸轴承时要特别注意以下事项：
(a)拉轴承的工具要与轴匹配 (b)工具必须安装在内侧轴承套上 (c)轴承不允许掉在轴或工具上，在轴上包一些绝缘胶带以保护轴是一个比较好的方法。 (d)不要通过加热轴承的方法来拆卸轴承，这样会损坏轴承和电机。 (e)要用吊索或吊链支撑拉轴承的工具的重量 |
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警告：小心损坏轴
在移动止推轴承时要格外小心不要损坏轴肩和轴颈。 |
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第14步
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拆除内侧轴封
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拆除内侧轴封。小心不要损坏衬垫，并留意密封的底部有一个排油孔。对此必须做好标记以保证安装时排油孔位于底部。面对电机时轴承盖上的V形切痕应位于顶部。
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安装
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第15步
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更换内侧轴封
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更换内侧轴封，电机轴上的垫圈换新。要确保排油孔位于底部、V形切痕位于顶部
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第16步
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确认轴承与轴是否相配
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轴的大小
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更换CVHE/F/G的止推轴承时，要严格确认轴的设计类型。确认轴的设计类型的唯一可靠方法是从轴的末端看是否有"K4"标记。轴末端的"K4"标记尺寸变化范围在1/4英寸到1/16隐村高。如果轴没有更换过，设计序列号可以确定轴的设计类型。
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第17步
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检查轴和旧轴承是否有损坏或磨损
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轴的尺寸
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拆除止推轴承以后，检查轴是否有损坏或磨损，尤其是轴颈和轴肩部分。要检测轴肩部分的外径以确定是否在公差范围内(参看CVHE-SB-33A)。如果超出公差范围，轴需要拆卸校整或更换。
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安装轴承
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第18步
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检查轴承是否配套
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轴承序列号
A B |
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轴承要配套才能安装。配套的轴承的序列号相同，但其中一个轴承的序列号后面跟了一个字母。
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警告：放置安装前损坏轴承
除非绝对必要，不要清洗轴承。轴承清洗后要特别注意将溶剂和清洁剂清除干净。 |
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第19步
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加热轴承
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轴承要均匀加热到230℉至250℉。如果用感应加热器加热，安装前轴承要消磁。取出轴承之前要确认感应加热器已经关闭。
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注：CVHE/F/G可以使用两种轴承。要根据不同供应商提供的轴承选择下面的一种安装步骤。不要两种都用。
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安装NTN轴承
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安装SKF轴承
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第20步
|
检查每个轴承是否有顶点标记
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检查轴承的定为标志
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顶点标记通常是标记在每个轴承的内圈和外圈上的
圆圈或凹陷。没有顶点标记的轴承应该予以退货。 |
有一个V字形标记位于两个轴承的外圈，每个轴承上
一半。另外每个轴承的内圈上也有一条线。当两个轴承在轴上的位置安装正确后，轴承外圈的标记就会组成一个完整的V字，内圈的线也会连成一条直线 |
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第21步
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安装内侧轴承
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安装内侧线轴承
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将轴承外圈比较薄的一侧对准轴，将轴承套到轴上，直到轴承座顶住轴肩为止。
将轴承的顶点标记置于轴的上部 |
将轴承外圈比较薄的一侧对准轴，将轴承套到轴上，直到轴承座顶住轴肩为止。
用油性尖笔在轴承内圈的侧面做一条标记线。标记线应在轴的下方。 |
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第22步
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将轴承内外圈顶点标记对齐
|
安装内侧线轴承
|
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旋转已安装轴承的外圈直到内外圈的顶点标记成一直线为止。
|
旋转轴承的外圈，将外圈上的V字形标记旋转至内圈标记线的另一侧。
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第23步
|
安装外侧轴承
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安装外侧轴承
|
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将外侧轴承安装到轴上之前要将轴承内外圈的顶点标记对齐。让外侧轴承的顶点标记与内侧轴承的顶点标记成160°至200°的角度，将外侧轴承套到轴上。
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将外侧轴承套到轴上之前要将轴承外圈的部分V形标记和内圈上的直线标记对好。保持轴承的定位标记与内侧轴承的定位标记成一直线，将轴承安装到轴上。
|
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第24步
|
将轴承就位
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(a)将外侧轴承内圈推到顶住内侧轴承为之，直到轴承在轴上卡紧。让轴承冷却到100F以下。在轴上安装一个气动螺母，用手拧紧螺母滑块端直到螺母顶紧外侧轴承为止。
(b)将气动管连接到气动螺母上，用一个带压力调节阀的气泵给螺母吹空气加压到2200psi使轴承顶住轴肩。 (c)用.001英寸的塞尺测量轴承圈与轴肩之间的间隙以确定轴承是否安装到位。安装到位的轴承的间隙应该是0.000。 释放气动螺母的压力，并拆除气动管和气动螺母。 |
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第25步
|
安装新的垫圈并用手拧紧防松螺母
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|
安装新的垫圈并用手拧紧防松螺母
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第26步
|
安装轴承密封的丝杆
|
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|||||
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安装两根16英寸长的3/8"丝杆，并将密封板安装上去。注意密封板的定位，保证排油孔位于底部。不要忘记安装密封圈，并确保密封圈的正确定位。
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第27步
|
安装轴承端盖
|
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|
|||||
|
|
重新安装先前为了安全起见拆掉的轴承端盖导杆。将轴承端盖的O型圈涂上LocTite 515"Gasket Eliminator"。用起吊设备吊装轴承端盖。轴承端盖应由导杆定位并支撑其重量。
轴承端盖定位时，选择联接内侧密封的导杆穿过端盖的螺栓孔时应使排油孔位于底部。 将轴承端盖安装到位，并用一些螺栓稍稍固定一下。端盖应该用很小的力就可以使其在轴承上滑动。 |
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第28步
|
在拆卸时的钻孔内安装两根导杆并拧紧所有螺栓
|
|
|
|||||
|
|
在先前拆卸时所钻的孔内重新安装两根导杆。导杆对于保证恢复压缩机拆卸前的密封间隙是非常必要的。用150Ft Lbs.的力矩将所有螺栓拧紧。
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|
第29步
|
检查轴是否能自由转动
|
|
|
|||||
|
转动轴，确保没有咬合或卡住的现象
|
||||||||
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第30步
|
安装内侧密封
|
|
|
|||||
|
|
沿导杆将内侧密封推到位并安装内六角螺栓。正确安装的轴承应该高出轴承端盖大约1/16英寸。如果不是，轴承密封没有安装到位，轴承会浮动。这可能会导致的压缩机损坏。必要时要重新安装轴承密封。用24Ft Lbs.力矩拧紧螺栓。
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第31步
|
检查轴是否能自由转动
|
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|
|||||
|
转动轴，确保没有咬合或卡住的现象
|
||||||||
|
第32步
|
安装轴承环
|
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|
|||||
|
|
安装轴承环及螺栓，用24Ft Lbs.的力矩拧紧。参看图21及22。轴承环的作用是给轴承外圈提供一种抓力防止其浮动。
|
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第33步
|
检查轴是否能自由转动
|
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|
|||||
|
转动轴，确保没有咬合或卡住的现象
|
||||||||
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第34步
|
用力矩扳手锁紧
|
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|
|||||
|
|
要用合适的力矩扳手和要求的力矩拧紧防松螺母。这对轴直径比较小的机组是可能的。对于大直径的轴，需要用气动套筒扳手以及相应的力矩以防止转子在定子中转动。力矩数据如下：
小直径的轴：60至80 Ft Lbs. 大直径的轴：160至200 Ft Lbs. 不要用榔头或活动扳手拧紧防松螺母。用CVHE-SB-33A表1例举的正确的套管扳手工具及相应的力矩，按照相应的程序完成。 |
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第35步
|
锁紧垫圈
|
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|
|||||
|
将锁紧垫圈的一个突舌敲弯。
|
||||||||
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第36步
|
安装轴承视镜板
|
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|
|||||
|
安装视镜板。O型圈和外侧法兰上一定要涂LockTite 515
|
||||||||
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第37步
|
安装轴承供油管和排油管
|
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|
|||||
|
|
重新安装供油管和排油管
注：焊接管路时一定要用惰性气体保护 |
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第38步
|
对机组加压检漏
|
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|||||
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||||||||