[Q&A Question 115] 2018.04.25
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【Q&A Question 115】April 25, 2018: Briefly explain the reasons for an increase in the temperature of individual bearings in a steam turbine, as well as the reasons for an overall increase in bearing temperatures Reasons for the increased temperature of individual bearings: (1) Increased load, uneven distribution of stress on the bearings, and higher load on certain bearings. (2) Poor oil inflow or poor oil return. (3) Debris entering the bearing, or separation of the bearing components. (4) Excessive steam pressure or significant air leakage on the side of the bearing. (5) There is gas in the bearing, and the oil flow is poor. (6) Vibration causes damage to the oil film and poor lubrication. Reasons for the general increase in bearing temperature: (1) An increase in the oil temperature at the outlet of the cooler due to certain reasons; (2) Deterioration of the oil quality. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) The validity period for this question is 48 hours; within those 48 hours, 10 wealth points are awarded for correct answers and 2 wealth points for incorrect answers ； If the response is given after 48 hours, the score is halved, regardless of whether it is correct or not ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below. The APP short-video skills competition has begun! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670
Reasons for increased temperature in individual bearings: ① Increased load, uneven distribution of stress on the bearings, with some bearings bearing excessive load. ② Poor inflow or outflow of oil. ③ Debris entering the bearings or separation of the bearing components. ④ Excessive steam pressure or leakage on the side of the bearings where the shaft seal is located. ⑤ Presence of gas within the bearings, resulting in poor oil flow. ⑥ Vibration causing damage to the oil film, leading to inadequate lubrication. General increase in bearing temperature: ① Increased oil outlet temperature in the cooler due to certain reasons. ② Deterioration of the oil quality.
Reasons for the increased temperature of individual bearings: (1) Increased load, uneven distribution of stress on the bearings, and higher load on certain bearings. (2) Poor oil inflow or poor oil return. (3) Debris enters the bearing, and the black metal shell comes off. (4) The shaft seal steam on the bearing side is excessive or there is significant steam leakage. (5) There is gas in the bearing, and the oil flow is poor. (6) Vibration causes the oil film to be damaged, leading to poor lubrication. Bearing temperatures have generally increased: (1) The oil outlet temperature of the cooler has risen for certain reasons. (2) Deterioration of oil quality. (3) Poor installation technique.
Reasons for the increased temperature of individual bearings: (1) Increased load, uneven distribution of stress on the bearings, and higher load on certain bearings. (2) Poor oil inflow or poor oil return. (3) Debris entering the bearing, or separation of the bearing components. (4) Excessive steam pressure or significant air leakage on the side of the bearing. (5) There is gas in the bearing, and the oil flow is poor. (6) Vibration causes damage to the oil film and poor lubrication. Reasons for the general increase in bearing temperature: (1) An increase in the oil temperature at the outlet of the cold oil cooler due to certain reasons; (2) Deterioration of the oil quality
Answer: Reasons for the increased temperature of individual bearings: (1) Increased load, uneven distribution of stress on the bearings, and higher load on certain bearings. (2) Poor oil inflow or poor oil return. (3) Debris entering the bearing, or separation of the bearing components. (4) Excessive steam pressure or significant air leakage on the side of the bearing. (5) There is gas in the bearing, and the oil flow is poor. (6) Vibration causes damage to the oil film and poor lubrication. Reasons for the general increase in bearing temperature: (1) An increase in the oil temperature at the outlet of the cooler due to certain reasons; (2) Deterioration of the oil quality.
Reasons for increased temperature in individual bearings: ① Increased load, uneven distribution of stress on the bearings, with some bearings bearing excessive load. ② Poor inflow or outflow of oil. ③ Debris entering the bearings or separation of the bearing components. ④ Excessive steam pressure or leakage on the side of the bearings where the shaft seal is located. ⑤ Presence of gas within the bearings, resulting in poor oil flow. ⑥ Vibration causing damage to the oil film, leading to inadequate lubrication. General increase in bearing temperature: ① Increased oil outlet temperature in the cooler due to certain reasons. ② Deterioration of the oil quality.
Reasons for the increased temperature of individual bearings: (1) Increased load, uneven distribution of stress on the bearings, and higher load on certain bearings. (2) Poor oil inflow or poor oil return. (3) Debris entering the bearing, or separation of the bearing components. (4) Excessive steam pressure or significant air leakage on the side of the bearing. (5) There is gas in the bearing, and the oil flow is poor. (6) Vibration causes damage to the oil film and poor lubrication. Reasons for the general increase in bearing temperature: (1) An increase in the oil temperature at the outlet of the cooler due to certain reasons; (2) Deterioration of the oil quality.
Reasons for the increased temperature of individual bearings: (1) Increased load, uneven distribution of stress on the bearings, and higher load on certain bearings. (2) Poor oil inflow or poor oil return. (3) Debris entering the bearing, or separation of the bearing components. (4) Excessive steam pressure or significant air leakage on the side of the bearing. (5) There is gas in the bearing, and the oil flow is poor. (6) Vibration causes damage to the oil film and poor lubrication. Reasons for the general increase in bearing temperature: (1) An increase in the oil temperature at the outlet of the cold oil cooler due to certain reasons; (2) Deterioration of the oil quality
Reasons for the increased temperature of individual bearings: (1) Increased load, uneven distribution of stress on the bearings, and higher load on certain bearings. (2) Poor oil inflow or poor oil return. (3) Debris enters the bearing, and the black metal shell comes off. (4) The shaft seal steam on the bearing side is excessive or there is significant steam leakage. (5) There is gas in the bearing, and the oil flow is poor. (6) Vibration causes the oil film to be damaged, leading to poor lubrication. Bearing temperatures have generally increased: (1) The oil outlet temperature of the cooler has risen for certain reasons. (2) Deterioration of oil quality.
Reasons for the increased temperature of individual bearings: (1) Increased load, uneven distribution of stress on the bearings, and higher load on certain bearings. (2) Poor oil inflow or poor oil return. (3) Debris entering the bearing, or separation of the bearing components. (4) Excessive steam pressure or significant air leakage on the side of the bearing. (5) There is gas in the bearing, and the oil flow is poor. (6) Vibration causes damage to the oil film and poor lubrication. Reasons for the general increase in bearing temperature: (1) An increase in the oil temperature at the outlet of the cold oil cooler due to certain reasons; (2) Deterioration of the oil quality
Reasons for the increased temperature of individual bearings: (1) Increased load, uneven distribution of stress on the bearings, and higher load on certain bearings. (2) Poor oil inflow or poor oil return. (3) Debris entering the bearing, or separation of the bearing components. (4) Excessive steam pressure or significant air leakage on the side of the bearing. (5) There is gas in the bearing, and the oil flow is poor. (6) Vibration causes damage to the oil film and poor lubrication. Reasons for the general increase in bearing temperature: (1) An increase in the oil temperature at the outlet of the cold oil cooler due to certain reasons; (2) Deterioration of the oil quality