【Q&A Question 068】March 09, 2017
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This post was last edited by 955559 on 2017-7-21 22:20. [Q&A Question No. 068] What are the causes of wear or burnout of turbine thrust bearings on 2017.03.09? The reference answers will be visible after responding; scoring is granted by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) 1. Steam containing water; 2. Poor quality in the manufacturing and installation of thrust bearings; 3. Debris accumulation on the blades; 4. Deteriorated oil quality with water present in it; 5. Interruption in oil supply; 6. Uneven expansion of the unit; 7. Axle misalignment. 2017 Q&A Summary Thread (updates starting now) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates starting now) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Third Round of Haichuan Outstanding Management Members Selection Contest http://bbs.hcbbs.com/thread-1655902-1-1.html (Source: Haichuan Chemicals Forum)
Steam contains water, resulting in poor quality and uneven expansion
①Steam carries water； ②Poor quality in the manufacturing and installation of thrust bearings ； ③Leaf fouling ； ④Oil quality has degraded; water is present in the oil ； ⑤Oil interruption ； ⑥Uneven expansion of the turbine unit ； ⑦Spinning shaft.
1. When water impact occurs； 2. Salt deposition on leaves ； 3. The gap in the diaphragm steam seal **or the gap at the diaphragm joint is too large, resulting in severe steam leakage and excessive axial thrust ； 4. Degraded quality of turbine oil, containing impurities and water, etc. 5. Poor installation quality of thrust bearings or uneven loading ；
(1) When water impact occurs； (2) Salt deposition on leaves ； (3) The steam seal gap of the partition ** or the gap at the partition joint is too large, resulting in severe steam leakage and excessive axial thrust ； (4) Degradation of turbine oil quality, containing impurities, water, etc ； (5) Poor installation quality of the thrust pads or uneven stress distribution ；
1. Steam carrying water; 2. Poor quality in the manufacturing and installation of thrust bearings; 3. Debris accumulation on the blades; 4. Degraded oil quality with water present in it; 5. Oil supply interruption; 6. Uneven expansion of the unit; 7. Axle misalignment.
Problems with the quality of the lubricating oil, interruption or insufficient pressure of the lubricating oil, issues with the thrust bearings themselves, assembly problems (too small a gap), blockage in the balance tubes
Steam contains water, thrust bearing failure, blade fouling, oil contains water, oil supply interrupted, uneven expansion of the unit, shaft misalignment
1. Steam with water； 2. Leaf fouling ； 3. Water in the oil ； 4. Oil interruption ； 5. Uneven expansion of the unit ； 6. Spinning shaft.
①Steam carries water； ②Poor quality in the manufacturing and installation of thrust bearings ； ③Leaf fouling ； ④Oil quality has degraded; water is present in the oil ； ⑤Oil interruption ； ⑥Uneven expansion of the turbine unit ； ⑦Spinning shaft.
①Steam carries water； ②Poor quality in the manufacturing and installation of thrust bearings ； ③Leaf fouling ； ④Oil quality has degraded; water is present in the oil ； ⑤Oil interruption ； ⑥Uneven expansion of the turbine unit ； ⑦Spinning shaft.