Rotary machinery field dynamic balance method based on simulation model parameter adjustment

Abstract

The invention belongs to the technical field of mechanical vibration tests, and particularly relates to a rotating machine field dynamic balance method based on simulation model parameter adjustment, which comprises the following steps: (1) establishing a rotor and bearing preliminary data model of rotating equipment; (2) measuring vibration data of the rotating equipment when the rotating equipment has a rotor mass imbalance fault; (3) adjusting bearing parameters in the rotor and bearing preliminary data model; (4) establishing a rotor calculation model reflecting the actual state of the rotor; (5) simulation of the field dynamic balance test process is carried out in the rotor calculation model, and an effective balance weight correction plane can be accurately selected when the large-scale rotating equipment has a vibration fault; when a test is carried out, the effect of carrying out counterweight adjustment on each correction plane can be accurately estimated in advance, a final weighting scheme is directly given, and the number of times of starting and stopping equipment is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of mechanical vibration tests, in particular to an on-site dynamic balancing method for rotating machinery based on simulation model parameter adjustment. Background technique [0002] Large rotating equipment is widely used in modern large industries, such as fans, steam turbines, generators and so on. These devices are usually characterized by long shafting, large volume, and high rotational speed. The vibration level of large rotating equipment bearings is an important indicator to measure the safety of equipment operation. Excessive vibration of bearings will seriously affect the safe operation of equipment. It is usually required to control the peak-to-peak value of vibration displacement below tens of microns. An important factor leading to the vibration failure of large rotating equipment is the uneven distribution of rotor mass due to the limitation of processing and installation accuracy, which is ...

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Problems solved by technology

For a specific device, the probability of failure is relatively low, so historical test data and experience accumulation are few, and the above two problems often cannot be effectively solved

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