【Daily Question No. 303】November 5, 2018
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【Daily Question No. 303】November 5, 2018: Briefly explain what shaft displacement in a compressor is What are the harms? During operation of the compressor and turbine, the movement of the rotor along the axis direction is referred to as axial displacement. Changes in this axial displacement indicate that there is a change in the relative position between the moving and stationary parts of the machine. If the displacement value approaches or exceeds the minimum axial clearance between these moving and stationary parts, frictional collisions will occur, resulting in damage to the machine. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； 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 movement of the rotor along the axis of the main shaft is referred to as axial displacement. The axial displacement of the machine unit should be kept within acceptable limits during operation, generally between 0.8 and 1 mm. Exceeding this value will cause friction and collision between the moving and stationary parts, leading to serious damage such as shaft bending, rupture of partitions and impellers, and breakage of numerous turbine blades. Therefore, during operation, it is necessary to regularly monitor the temperature of the bearing shells, the temperature of the lubricating oil, and the values indicating axial displacement; any abnormal conditions must be addressed immediately.
On a high-speed rotating rotor, an axial force directed from the high-pressure side to the low-pressure side is always present. Under the action of this axial force, the rotor undergoes axial displacement in the direction of that force. The axial displacement of the rotor causes relative sliding between the shaft journal and the bearing shells; as a result, the bearing shells or shaft journal may be damaged. Worse still, such displacement leads to friction and collision between the rotor components and the stator components, which can even result in damage to the machine. Due to the axial force on the rotor, there is a risk of friction, wear, collisions, and even damage to the machinery; therefore, effective technical measures should be employed to balance this force in order to improve the reliability of the machine’s operation.
A shift in the axis of the rotor will cause relative sliding between the shaft neck and the shaft sleeve; as a result, it is possible to strain the shaft sleeve or the shaft neck. Worse still, due to the rotor shift, it will lead to friction, wear, collision between the rotor components and the stator components, and even machine damage.
During operation of the compressor and turbine, the movement of the rotor along the axis direction is referred to as axial displacement. Changes in this axial displacement indicate that there is a change in the relative position between the moving and stationary parts of the machine. If the displacement value approaches or exceeds the minimum axial clearance between these moving and stationary parts, frictional collisions will occur, resulting in damage to the machine.
During the operation of compressors and turbines, the movement of the rotor along the axis direction is called shaft displacement； Changes in shaft displacement indicate that the relative positions of the moving and stationary parts of the unit have changed. If the displacement value approaches or exceeds the minimum axial clearance between these parts, frictional collisions will occur, leading to damage to the machine.
The movement of the rotor along the axis of the main shaft is referred to as axial displacement. The axial displacement of the machine unit should be kept within acceptable limits during operation, generally between 0.8 and 1 mm. Exceeding this value will cause friction and collision between the moving and stationary parts, leading to serious damage such as shaft bending, rupture of partitions and impellers, and breakage of numerous turbine blades. Therefore, during operation, it is necessary to regularly monitor the temperature of the bearing shells, the temperature of the lubricating oil, and the values indicating axial displacement; any abnormal conditions must be addressed immediately.
During operation of the compressor and turbine, the movement of the rotor along the axis direction is referred to as axial displacement. Changes in this axial displacement indicate that there is a change in the relative position between the moving and stationary parts of the machine. If the displacement value approaches or exceeds the minimum axial clearance between these moving and stationary parts, frictional collisions will occur, resulting in damage to the machine.
During operation of the compressor and turbine, the movement of the rotor along the axis direction is known as axial displacement. Rotors that are running at high speeds are constantly subject to an axial force that acts from the high-pressure side toward the low-pressure side. Under the action of an axial force, the rotor will undergo an axial displacement in the direction of that force. A shift in the axis of the rotor will cause relative sliding between the shaft neck and the shaft sleeve; as a result, it is possible to strain the shaft sleeve or the shaft neck. Worse still, due to the rotor shift, it will lead to friction, wear, collision between the rotor components and the stator components, and even machine damage.
During operation of the compressor and turbine, the movement of the rotor along the axis direction is referred to as axial displacement. Changes in this axial displacement indicate that there is a change in the relative position between the moving and stationary parts of the machine. If the displacement value approaches or exceeds the minimum axial clearance between these moving and stationary parts, frictional collisions will occur, resulting in damage to the machine.
The high-speed rotating rotor is constantly subjected to an axial force directed from the high-pressure side to the low-pressure side. Under the action of an axial force, the rotor will undergo an axial displacement in the direction of that force. A shift in the axis of the rotor will cause relative sliding between the shaft neck and the shaft sleeve; as a result, it is possible to strain the shaft sleeve or the shaft neck. Worse still, due to the rotor shift, it will lead to friction, wear, collision between the rotor components and the stator components, and even machine damage.