Measuring and testing – Rotor unbalance – Dynamic
364463, G01M 116
A balancing method for use in a multiple-span rotor shaft system for a prime mover, such as a large-capacity, large-sized steam turbine and generator. A balancing influence coefficient representing the relationship between a unit weight and the resultant vibration, when the aforesaid unit weight is attached to a given balance-correcting plane of a multiple span rotor, is first determined, and then a balance-correcting plane, to which is to be attached a balancing weight, is selected, then a balancing weight is determined so as to minimize the value of the residual vibration amplitude, by using the method of least squares, which values are dependent on the value of the vibration amplitude, influence coefficients and balancing weights. Thus, a weight corresponding to the aforesaid balancing weight is attached to the aforesaid balance-correcting plane to reduce vibrations in a shaft.
patent: 2799168 (1957-07-01), Federn et al.
patent: 3071972 (1963-01-01), Koenig
patent: 3077781 (1963-02-01), Silver
patent: 3380286 (1968-04-01), Porter
Gill James J.
Hitachi , Ltd.
Balancing method for use in multiple-span rotor shaft system and does not yet have a rating. At this time, there are no reviews or comments for this patent.If you have personal experience with Balancing method for use in multiple-span rotor shaft system and, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Balancing method for use in multiple-span rotor shaft system and will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-272207