Equipment repair is a must. A diagnostic specialist has to assess the technical condition of the equipment, and, accordingly, the quality of the repair. But it so happened that I expect the withdrawal of the unit from repair at my enterprise with some shudder.
Насосный агрегат: 14НДС-12К, N=195 кВт, n=960 об/мин;
Обнаружена повышенная осевая вибрация п/у №3, Vскз=6,2 мм/с.
Ранее была проблема с подшипником №3, меняли его, но сейчас сохраняется осевая вибрация на о3.
Мои выводы, т.к доминирует fоб = 16 Гц…
My colleagues and I decided to conduct an experiment and determine the effect of imbalance on power consumption. A double-sided intake fan with a belt drive with vibration dampers was chosen as a test subject.
Two-plane balancing is most often carried out using calculations in specialized programs. The task is to determine the sensitivity to test weights in both balancing planes and calculate the corrective weights. But in this article I want to highlight one of the methods of dynamic two-plane balancing of a rigid inter-bearing rotor without using programs. I am sure it will seem at least interesting to many experts. As always, with a real practical example at the place of operation. A fan of a double-sided suction in a belt drive (n = 3000 rpm) will act as a test subject.
This article presents a two-plane balancing fan on a single shaft. A practical example of balancing is shown, the calculation of which is done without using software. Comparison is made with the calculation results on a PC.
In this article I want to talk about the difficulties encountered during vibration adjustment, the interweaving of many different defects at the rotational speed, the search for solutions to the problem, and the possibilities of the vibration adjustment specialist are not unlimited. A story without a happy ending, as always from our own real practice.