Inspection found excessive degree of coupling beating by dynamic balance, to balance the center caused by the uneven quality; if the rigid coupling scoop excessive side, when the bolt, it will cause the other side of the journal Sapporo degree increases, vibration occurs in the running.

Side of the scene scoop method, use standard flat repair scratch. Another method is to use non-uniform heating caused expansion of components play a role in partial correction scoop.

Specifically, this is a negative bias at the coupling plane dipper Go to the top, then place in a time when the maximum, the coupling is the coupling of the other end round the roots near the surface of the arc along with the roast to heated . Coupling at the negative end to "the" shape fire heating. While heating. The coupling expansion, with its heavy weight or suspension, for correction, in the heating process, the dial indicator can be installed to monitor the changes.

Coupling is used to connect the turbine rotor and generator rotor with the main oil pump oil lubrication system, control system, the main transfer rotational torque. As the coupling with the turbine rotor at high speed, so by the great centrifugal force. The original spring-type flexible coupling flange at one end by the two bolts, caught in the turbine rotor flange and coupling flange, or between the oil pump shafts between the axial displacement of a certain amount. Operation due to coupling of the turbine rotor center and the center of some of the bias, while a little uneven expansion of the spindle or other reasons may result in significant shear in the spring force, as the spring becomes twisted by stress, so easily broken. After spring break its axial clearance is more uneven, so the opening of large deviations, up to a certain degree of design theory, the coupling side of the flange under the rub short time longer, it will make the coupling bolts breaking, and then broken. Rear gear set to the following main advantages: the rotor expansion, allow a larger center deviation; smooth transmission of large steam turbine generator rotational torque; spindle expansion is well absorbed when the displacement of this axis; the rodents co-uniform, the force between the teeth and the tooth is also more evenly, reducing the transmission of vibration.



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