Voith Paper Patent Gmbh

Eva Scheideler

Robert Wolf

Georg Kugler

Machine and process for operating machine having at least one roll and an opposing surface arranged to form at least one nip. The machine includes at least one roll and an opposing surface arranged to form at least one nip. A sound measuring device is arranged to conduct sound measurements in at least one of an area of the at least one roll and an area of the at least one nip to monitor vibrations in the at least one roll and/or in the at least one nip. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Machine and process for operating a machine to monitor vibrations

A method facilitates simultaneously balancing mechanically coupled, synchronously rotating rotors. The rotors have different axes of rotation relative to one another and together define a rotor group to be balanced. Each rotor has at least one of a bearing plane and an other measuring plane associated therewith, the other measuring plane significantly describing vibrations of the each rotor. The rotors within the rotor group together have a number of different angular velocities associated therewith. At least one rotor of the rotor group is equipped with at least one vibration pickup in at least one of each bearing plane and the other measuring plane thereof. As many impulse and phase transmitters are installed in the rotor group as are provided the number of different angular velocities associated with the rotors within the rotor group. At least pertaining vibration signals and a pertaining speed signal are recorded simultaneously, with regard to a respective one of each bearing plane and the other measuring plane. For each bearing plane and the other measuring plane, the coefficients of influence thereof are determined by applying a method of coefficients of influence and setting defined test unbalances. At least one corresponding matrix of coefficients of influence is generated, and a counterbalance mass distribution from the at least one corresponding matrix of coefficients of influence is determined for every operating balance plane of the rotor group. Each bearing plane and measuring plane define one test balance plane.

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Nattheim, Germany

Eva Scheideler