Why does the centrifugal air compressor generate an excessive axial displacement during operation? How to prevent it?
[Abstract]: There are the following reasons why the rotor of centrifugal aircraft generates axial position is too large
There are the following reasons why the rotor of centrifugal aircraft generates axial position is too large:
1) The bearing is severely worn out for the lax oil circuit or the failure of the oil membrane to form.
2) The installation is not strict and produces more severe mechanical vibration.
3) The axial thrust of the centrifugal air compressor is balanced by the pressure difference between the two sides of the balance disk. When the low pressure cavity in the low pressure cavity is increased after the flat street, the axial thrust is lost, which will cause the axial position to excess.
The following measures can be taken to prevent:
① It is accurate and reliable to ensure that the axial displacement index is accurate and reliable. When the rotor axis moves, once the permanent value is exceeded, the sound light alarm is emitted until the automatic emergency parking is automatically stopped.
② When the oil pressure is low, do not easily start the air centrifugal compressor.
③ After emergency parking, pay special attention to whether the fastener screws of the axial displacement indicator are loose, and if loosening, it should be tight.
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