(Daily Question) Coal-to-oil and olefins forum, April 25, 2018
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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: What are rigid shafts and flexible shafts in turbines and compressors? When the operating speed of the rotor is less than the first critical speed, its shaft is referred to as a rigid shaft ； When the rotor speed is greater than the first critical speed and less than the second critical speed, its shaft is referred to as a flexible shaft. Note: The answer will be announced automatically in two days!
A shaft whose operating speed is below the first critical speed is called a rigid shaft, while a rotating body whose operating speed is above the first critical speed is called a flexible shaft.
When the operating speed of the rotor is less than the first critical speed, its shaft is referred to as a rigid shaft； When the rotor speed is greater than the first critical speed and less than the second critical speed, its shaft is referred to as a flexible shaft.
A shaft whose operating speed is below the first critical speed is called a rigid shaft, while a rotating body whose operating speed is above the first critical speed is called a flexible shaft
The first critical speed of the rotor, above the operating speed, is referred to as a rigid shaft. The first critical speed of the rotor, below the operating speed, is referred to as a flexible shaft.
A shaft whose operating speed is below the first critical speed is called a rigid shaft; a rotating body whose operating speed is above the first critical speed is called a flexible shaft.
If the rotor’s first critical speed is above the operating speed, it is a rigid shaft; if it is below the operating speed, it is a flexible shaft
A rotor with a critical speed above its operating speed is referred to as a hard shaft, or rigid shaft; whereas a rotor with a critical speed below its operating speed is called a soft shaft, or flexible shaft
When the operating speed of the rotor is less than the first critical speed, its shaft is referred to as a rigid shaft； When the rotor speed is greater than the first critical speed and less than the second critical speed, its shaft is referred to as a flexible shaft.
What are rigid shafts and flexible shafts in turbines and compressors? Answer: When a machine operates at a speed lower than its critical speed, it is referred to as a \"rigid shaft\"; when it operates at a speed higher than its critical speed, it is called a \"flexible shaft\"”
Rigid shaft: A shaft whose operating speed is below the rotor’s first-order critical speed； Flexible shaft: A rotating shaft whose operating speed is higher than the first-order critical speed.