【Q&A Question 094】April 04, 2017
Thread Content
【Q&A Question 094】April 4, 2017: The main reasons for increased vibration in the centrifuge (Unless otherwise specified, all Q&A questions are based on hydrogenation units.) ) After *replying*, the reference answers will be visible; scoring is achieved by identifying the key points. 1. Incorrect concentricity 2. Damaged bearings 3. Friction between moving and stationary parts 4. Damaged coupling 5. Unbalanced rotor. Summary thread of Q&A questions from 2017 (updates ongoing): http://bbs.hcbbs.com/thread-1657793-1-1.html. Summary thread of daily questions from 2017 (updates ongoing): http://bbs.hcbbs.com/thread-1657794-1-1.html. Summary thread of Q&A questions from 2016 (already updated): http://bbs.hcbbs.com/thread-1597792-1-1.html. Third-phase selection contest for outstanding management members at Haichuan: http://bbs.hcbbs.com/thread-1655902-1-1.html (Source: Haichuan Chemical Industry Forum)
The medium changes, the temperature changes,
1. The foundation screws are loose. 2. It is unbalanced in itself. 3. Uneven feeding. 4. Clogging of the filter screen. 5. Blockage in the mother liquor pipe. 6. Filter cartridge damaged. 7. Bearing damage.
Incorrect concentricity, damaged bearings, friction between moving and stationary parts, damaged couplings, rotor imbalance
1. Vibration can be caused by mechanical faults in the equipment itself, such as large bearing clearances, damaged bearings, damaged gearboxes, components coming loose, and imbalance resulting from wear; the failure of shock absorbers or springs can also cause vibration； 2. Vibrations caused by improper operation or changes in conditions, such as uneven feeding, poor discharge, changes in the properties of the feed material, and inadequate flushing ； 3. Foundation (or structural) resonance or loose anchor bolts.
①The concentricity is incorrect； ②Bearing damage ； ③Dynamic and static friction ； ④Coupling damaged ； ⑤The rotor is unbalanced.
Axial vibration, axial displacement, excessive slag, high torque
Increased load, surge, instrument fault indications, bearing wear, lubrication oil supply interrupted!