Technology of controlling the position and alignment of rotating machines
Background. The reliable and faultless performance of rotating machines directly depends on the accuracy of its installation in the design position. The statistics of such equipment exploitation show that more than 30 % of accidents and unplanned shutdowns are connected with the machine’s misalignment from its straight rotation axis or geometric axis of its body frame. Materials and/or methods. There has been suggested the technology of complex diagnosis of rotating machines during their operation based on remote measurements with the help of an electronic tacheometer. This technology allows one to define the geometric parameters of machines. There has been described the technique of geodetic measurements in terms of alignment of drying drums into the design position. There has been carried out the modeling of the drum performance and defined the correcting action, which must set it into the design position. Results. The modeling of the drying drum has shown that misalignment of rotation axes of support rollers excesses the allowance, making ±10 mm/m, and misalignment of rims’ rotation axes from the drum rotation axis makes 2.5 mm/m. The comparative analysis of the drying drum at the measurement during its operation and static mode differs by more than 1/350. Conclusion. The work connected with the alignment of the drying drum has shown high efficiency and accuracy of the suggested method of controlling the position and alignment of rotating machines. For the complex diagnosis of joints and mechanisms of such machines it is necessary to carry out previous examination of their vibration and temperature state. Before the machine is aligned it is advised to eliminate the taper of rims and support rollers.