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Rotor imbalance
Vibration characteristics of rotor mass eccentricity
1
2
3
4
5
6
7
8
Characteristic frequency
Frequent frequency
Vibration stability
Vibration direction
Phase characteristics
Axis trajectory
Precession direction
Vector area
1×
stable
Radial
stable
oval
Positive precession
constant
constant
Variation of eccentric vibration of rotor mass with sensitive parameters
1
2
3
4
5
6
With speed
With load
With oil temperature
With traffic
With pressure
Other identification methods
obvious
Not obvious
constant
constant
constant
Vibration tends to zero at low speeds
Cause of malfunction of rotor mass eccentricity
Source of failure
1
2
3
4
Design, manufacture
Installation, repair
Operation, operation
Machine degradation
main reason
Unreasonable structure, large manufacturing error, uneven material, low dynamic balance
Displacement of parts on the rotor
Rotor fouling
Loose parts on the rotor
Vibration characteristics of rotor component defects
1
2
3
4
5
6
7
8
Characteristic frequency
Frequent frequency
Vibration stability
Vibration direction
Phase characteristics
Axis trajectory
Precession direction
Vector area
1×
Stable after the sudden
Radial
Stable after mutation
oval
Positive precession
Stable after mutation
Rotor component defect vibration changes with sensitive parameters
1
2
3
4
5
6
With speed
With load
With oil temperature
With traffic
With pressure
Other identification methods
obvious
Not obvious
constant
constant
constant
Sudden increase in amplitude
Cause of failure of rotor component defect
Source of failure
1
2
3
4
Design, manufacture
Installation, repair
Operation, operation
Machine degradation
main reason
Unreasonable structure, large manufacturing error, uneven material
The rotor has a large preload
1. Overspeed, overload operation 2. Partial damage to parts
Rotor corrosion fatigue, stress concentration
April 10, 2023
September 22, 2022
March 17, 2022
April 21, 2023
April 19, 2023
May 13, 2023
May 03, 2023
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April 10, 2023
September 22, 2022
March 17, 2022
April 21, 2023
April 19, 2023
May 13, 2023
May 03, 2023
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.