The mechanical failures of Shandong Generator Rental Company mainly include the following points:
1. Misalignment in certain shaft systems, with the centerlines not overlapping and incorrect centering. This fault is primarily caused by poor alignment or improper installation during the assembly process. Another scenario is that some parts of the system have their centerlines aligned during cold conditions, but after some operation time, due to deformation of the rotor supports and foundations, the centerlines are disrupted, resulting in vibration for the generator rental company.
2. Gears and couplings connected to diesel generator sets are rough. This kind of failure is mainly manifested by poor gear engagement, severe tooth wear, inadequate wheel lubrication, misalignment and misplacement of the couplings, incorrect tooth shape and pitch, excessive gaps, or severe wear of the gear-type couplings, all of which can cause some vibration.
3. Defects in the diesel generator set's structure and installation issues. This kind of failure is primarily manifested as shaft neck eccentricity, shaft bending, excessive or insufficient gap between the shaft and bearing sleeve, insufficient rigidity of certain parts or the entire foundation of the diesel generator set, including the bearing base, base plate, and ground, the generator set not securely fastened to the base plate, loose bottom foot bolts, and looseness between the bearing base and base plate. Moreover, an excessive or insufficient gap between the shaft and bearing sleeve can not only cause vibration but also lead to abnormal lubrication and temperature in the bearing sleeves of the generator set.
4. Diesel generator sets cause load-induced vibration. For example: the turbine vibration of a steam turbine diesel generator set, the vibration of fans and water pumps driven by diesel generator sets, leading to vibration in the diesel generator sets and triggering the need for generator rental companies.
