Automated system for calgulating corrective loads and predicting vibration during dynamic balancing of turbines

• Видавець: Інститут проблем реєстрації інформації НАН України
• Дата: 2018
• Автори: Trykush, N. P., Segeda, I. V.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Інститут проблем реєстрації інформації НАН України 2018
• Теми: mechanical vibration; dynamic balancing; imbalance; balancing of rotors; automation of balancing corrective loads calculations; механическая вибрация; динамическая балансировка; дисбаланс; уравновешивание роторов; автоматизация расчетов балансировочных масс; механічна вібрація; динамічне балансування; врівноваження роторів; автоматизація розрахунків балансувальних мас
• Онлайн доступ: http://drsp.ipri.kiev.ua/article/view/142903

In Ukraine, 47,7 % of electricity production falls on nuclear power plants. An important and time-consuming process in the NPP is the monitoring of the level of vibration and dynamic balancing of turbines. Nowadays in our country we have only a partial automation of it. Therefore, solving of technical problems in power engineering based on modern information technologies is actual and in demand. Analysis of existing solutions shows that there is practically no single algorithm for dynamic balancing and the method of selecting one optimal load for a set of bearings to eliminate the calculated vibration. The goal of the work is to create unified software that could not only compute the corrective loads, but also immediately offer an engineer the most optimal solution how to eliminate the vibration. Actually, to create such functionality, it is necessary to combine the numerical and vector methods of determining the vibration and to improve them for the possibility of choosing the best value. Our main tasks: to find the optimal mass of test load and optimal place to put it; find the optimum mass and the optimal location of the correcting load during repair and under load in order to get the minimum values of vibration at all monitored points, without exceeding their normal values; to analyze and predict how the direction of the vibration vector would change; to visualize the results on the selected direction; to improve a technology of calculation corrective load for each bearing to obtain more accurate and quick results. Sometimes the calculated values of the expected vibration do not coincide with real values when a turbine unit is operating at high power. Therefore, one of the solutions to the problem is to create a knowledge base for the system and an algorithm to select corrective loads based on conclusions and attempts that system made earlier.