搜索
ss
ss
新闻中心
News
-
-
Let's understand the performance characteristics of dynamic balance

Let's understand the performance characteristics of dynamic balance
Top

  • Categories:news
  • Author:
  • Origin:
  • Time of issue:2021-03-31 16:51
  • Views:

(Summary description)High-speed rotating machinery is greatly affected by materials. Impact, corrosion, abrasion, and coking will cause unbalanced faults to the rotor system of the machine. And 70% of the vibration failures of rotating machinery originate from the imbalance of the rotor system. Usually, the maintenance personnel dismantle the rotor with greater vibration, directly replace the impeller, etc., and reinstall the rotor and run it to reduce the vibration.   However, due to the existence of the original unbalance of the rotating parts, after the machine is running, sometimes the vibration still exceeds the standard allowable value. In order to prevent crashes, threaten the safety of on-site personnel and ensure the normal operation of production, dynamic balance correction is required. A research content of rotor dynamics refers to the operation of determining the position and size of the unbalance (centrifugal force and centrifugal force couple, see relative motion) generated when the rotor rotates and eliminating it. The unbalance will cause the lateral vibration of the rotor and cause unnecessary dynamic load on the rotor, which is not conducive to the normal operation of the rotor. Therefore, most rotors should be dynamically balanced. In machine manufacturing or maintenance, dynamic balancing becomes a process. The unbalance produced when the rotor rotates is caused by the centroid of each micro-segment of the rotor not strictly on the axis of rotation. The centrifugal force generated by the centrifugal force of each micro-segment deviating from the axis of rotation is perpendicular to the axis of rotation. Through force synthesis, the centrifugal force system can be synthesized into a few concentrated forces whose direction is still perpendicular to the axis. Generally speaking, at least two concentrated forces acting on two cross-sections respectively can be used to represent the original centrifugal force system. If these two concentrated forces just form a force couple, the original imbalance cannot be detected and measured when the rotor is not rotating.

Let's understand the performance characteristics of dynamic balance
Top

High-speed rotating machinery is greatly affected by materials. Impact, corrosion, abrasion, and coking will cause unbalanced faults to the rotor system of the machine. And 70% of the vibration failures of rotating machinery originate from the imbalance of the rotor system. Usually, the maintenance personnel dismantle the rotor with greater vibration, directly replace the impeller, etc., and reinstall the rotor and run it to reduce the vibration.

 



However, due to the existence of the original unbalance of the rotating parts, after the machine is running, sometimes the vibration still exceeds the standard allowable value. In order to prevent crashes, threaten the safety of on-site personnel and ensure the normal operation of production, dynamic balance correction is required. A research content of rotor dynamics refers to the operation of determining the position and size of the unbalance (centrifugal force and centrifugal force couple, see relative motion) generated when the rotor rotates and eliminating it.

The unbalance will cause the lateral vibration of the rotor and cause unnecessary dynamic load on the rotor, which is not conducive to the normal operation of the rotor. Therefore, most rotors should be dynamically balanced. In machine manufacturing or maintenance, dynamic balancing becomes a process. The unbalance produced when the rotor rotates is caused by the centroid of each micro-segment of the rotor not strictly on the axis of rotation.

The centrifugal force generated by the centrifugal force of each micro-segment deviating from the axis of rotation is perpendicular to the axis of rotation. Through force synthesis, the centrifugal force system can be synthesized into a few concentrated forces whose direction is still perpendicular to the axis. Generally speaking, at least two concentrated forces acting on two cross-sections respectively can be used to represent the original centrifugal force system. If these two concentrated forces just form a force couple, the original imbalance cannot be detected and measured when the rotor is not rotating.

  • Categories:news
  • Author:
  • Origin:
  • Time of issue:2021-03-31 16:51
  • Views:

High-speed rotating machinery is greatly affected by materials. Impact, corrosion, abrasion, and coking will cause unbalanced faults to the rotor system of the machine. And 70% of the vibration failures of rotating machinery originate from the imbalance of the rotor system. Usually, the maintenance personnel dismantle the rotor with greater vibration, directly replace the impeller, etc., and reinstall the rotor and run it to reduce the vibration.

 

However, due to the existence of the original unbalance of the rotating parts, after the machine is running, sometimes the vibration still exceeds the standard allowable value. In order to prevent crashes, threaten the safety of on-site personnel and ensure the normal operation of production, dynamic balance correction is required. A research content of rotor dynamics refers to the operation of determining the position and size of the unbalance (centrifugal force and centrifugal force couple, see relative motion) generated when the rotor rotates and eliminating it.

The unbalance will cause the lateral vibration of the rotor and cause unnecessary dynamic load on the rotor, which is not conducive to the normal operation of the rotor. Therefore, most rotors should be dynamically balanced. In machine manufacturing or maintenance, dynamic balancing becomes a process. The unbalance produced when the rotor rotates is caused by the centroid of each micro-segment of the rotor not strictly on the axis of rotation.

The centrifugal force generated by the centrifugal force of each micro-segment deviating from the axis of rotation is perpendicular to the axis of rotation. Through force synthesis, the centrifugal force system can be synthesized into a few concentrated forces whose direction is still perpendicular to the axis. Generally speaking, at least two concentrated forces acting on two cross-sections respectively can be used to represent the original centrifugal force system. If these two concentrated forces just form a force couple, the original imbalance cannot be detected and measured when the rotor is not rotating.

相关资讯