(Daily Question) Coal-to-Oil and Olefins Forum, 2018.2.17
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3.jpg Participation: Prize of 5 Wealth； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. Question: (DMTO) Olefin separation unit: Why is it necessary to maintain a certain oil temperature before starting the turbine? Maintaining an appropriate oil temperature is primarily to establish a proper oil film in the bearings. When the turbine speed reaches a certain level, it is necessary to establish an appropriate oil film thickness between the shaft and the bearings, as well as between the thrust disc and the thrust bearing surfaces made of babbitt, in order to prevent dry friction and minimize the heat generated by friction and the wear of the friction surfaces, thereby ensuring the safe operation of the unit. If the oil temperature is too low, the increased viscosity of the oil leads to a thicker oil film, which reduces the load-bearing capacity of the oil film and can easily cause unstable vibrations in the oil film. If the oil temperature is too high, the viscosity of the oil decreases significantly, resulting in a too-thin oil film. It becomes difficult to establish an oil film within the bearings, thereby losing its lubricating function; at the same time, this also reduces the cooling effect of the lubricant on the bearings. Note: The answers will be released automatically in two days!
Before starting the turbine, the oil system should be activated first, with the oil temperature maintained between 35–45°C. Keeping an appropriate oil temperature is necessary to enable the lubricating oil to form a proper oil film in the bearing shells. If the oil temperature is too low, the viscosity of the oil increases, resulting in an overly thick oil film. This not only reduces the load-bearing capacity of the oil film but also leads to unstable operation. However, if the oil temperature is too high, the oil viscosity decreases, making it difficult to form an oil film and thus preventing lubrication.
Before starting the turbine, the oil system should be activated first, with the oil temperature maintained between 35–45°C. Keeping an appropriate oil temperature is necessary to enable the lubricating oil to form a proper oil film in the bearing shells. If the oil temperature is too low, the viscosity of the oil increases, resulting in an overly thick oil film. This not only reduces the load-bearing capacity of the oil film but also leads to unstable operation. However, if the oil temperature is too high, the oil viscosity decreases, making it difficult to form an oil film and thus preventing lubrication. A turbine is a rotary power machine that converts the energy of steam into mechanical work. Also known as a steam turbine. It is mainly used as a prime mover for power generation, and can also directly drive various pumps, fans, compressors, and ship propellers. The exhaust steam or intermediate extraction steam from the turbine can also be utilized to meet the heating needs for production and daily life.
Before starting the unit, the oil system should be activated first, with the oil temperature maintained between 35 and 45°C. If the temperature is too low, it is possible to raise it in advance. Maintaining an appropriate oil temperature is essential in order to establish a proper oil film in the bearing shells. If the oil temperature is too low, the viscosity of the oil increases, resulting in an overly thick oil film; this not only reduces the load-bearing capacity of the oil film but also leads to unstable operation. The oil temperature should also not be too high, as this results in too low oil viscosity, making it difficult to form an oil film and thus compromising the lubrication effect
Before starting the unit, the oil system should be activated first, with the oil temperature maintained between 35 and 45°C; if the temperature is too low, the oil temperature can be raised in advance. Maintaining an appropriate oil temperature is primarily to establish a proper oil film in the bearing shells. If the oil temperature is too low, the increased viscosity of the oil causes the oil film to become too thick, which not only reduces its load-bearing capacity but also leads to unstable operation. The oil temperature should not be too high either; otherwise, the viscosity of the oil becomes too low, making it difficult to form an oil film and thus losing its lubricating effect.
Before starting the turbine, the oil system should be activated first, with the oil temperature maintained between 35–45°C. Keeping an appropriate oil temperature is necessary to enable the lubricating oil to form a proper oil film in the bearing shells. If the oil temperature is too low, the viscosity of the oil increases, resulting in an overly thick oil film. This not only reduces the load-bearing capacity of the oil film but also leads to unstable operation. However, if the oil temperature is too high, the oil viscosity decreases, making it difficult to form an oil film and thus preventing lubrication. A turbine is a rotary power machine that converts the energy of steam into mechanical work. Also known as a steam turbine. It is mainly used as a prime mover for power generation, and can also directly drive various pumps, fans, compressors, and ship propellers. The exhaust steam or intermediate extraction steam from the turbine can also be utilized to meet the heating needs for production and daily use
Before starting the turbine, the oil system should be activated first, with the oil temperature maintained between 35–45°C. Keeping an appropriate oil temperature is necessary to enable the lubricating oil to form a proper oil film in the bearing shells. If the oil temperature is too low, the viscosity of the oil increases, resulting in an overly thick oil film. This not only reduces the load-bearing capacity of the oil film but also leads to unstable operation. However, if the oil temperature is too high, the oil viscosity decreases, making it difficult to form an oil film and thus preventing lubrication.
Before starting the turbine, the oil system should be activated first, with the oil temperature maintained between 35–45°C. Keeping an appropriate oil temperature is necessary to enable the lubricating oil to form a proper oil film in the bearing shells. If the oil temperature is too low, the viscosity of the oil increases, resulting in an overly thick oil film. This not only reduces the load-bearing capacity of the oil film but also leads to unstable operation. However, if the oil temperature is too high, the oil viscosity decreases, making it difficult to form an oil film and thus preventing lubrication.
Before starting the turbine, the oil system should be activated first, with the oil temperature maintained between 35–45°C. Keeping an appropriate oil temperature is necessary to enable the lubricating oil to form a proper oil film in the bearing shells. If the oil temperature is too low, the viscosity of the oil increases, resulting in an overly thick oil film. This not only reduces the load-bearing capacity of the oil film but also leads to unstable operation. However, if the oil temperature is too high, the oil viscosity decreases, making it difficult to form an oil film and thus preventing lubrication.
Before starting the unit, the oil system should be activated first, with the oil temperature maintained between 35 and 45°C. If the temperature is too low, it is possible to raise it in advance. Maintaining an appropriate oil temperature is essential in order to establish a proper oil film in the bearing shells. If the oil temperature is too low, the viscosity of the oil increases, resulting in an overly thick oil film; this not only reduces the load-bearing capacity of the oil film but also leads to unstable operation. The oil temperature should also not be too high, as this results in too low oil viscosity, making it difficult to form an oil film and thus compromising the lubrication effect
It is to establish a proper oil film in the bearing shells. If the oil temperature is too low, the viscosity of the oil increases, resulting in an overly thick oil film that reduces its load-carrying capacity; if the oil temperature is too high, the viscosity of the oil is too low, making it difficult to form an oil film.