Flowserve SVCN 7, Установка, эксплуатация и обслуживание

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SVCN 7 INSTALLATION, OPERATION, & MAINTENANCE
NOTE
Flowserve recommends the use of either a double-dial
indicator procedure as outlined below or a laser alignment
procedure for coupling of this pump. If a laser alignment
procedure is used, follow the procedures supplied by the
laser alignment equipment manufacturer for alignment of the
pump.
All adjustments during alignment should be made to the driver; the pump should be fixed in position
on the baseplate. To emphasize the importance of this procedure, driver mount pads are machined low
on the baseplate making it necessary to shim under the driver feet in order to raise the driver shaft
even with the pump shaft. The following coupling procedures have been planned to ensure that both
shafts are correctly aligned and coupled for extended operation.
2.2.1 ALIGNMENT FREQUENCY
To ensure that the pump and driver are in accurate alignment, their shafts must be checked for
alignment and corrected, if necessary, under these circumstances:
1. after connecting the plant piping to the pump;
2. after the first run, with the pump still hot from several hours of operation, with incoming
liquid at its normal temperature, and before the pump goes on line for an extended period.
3. after the first slight increase in vibration appears following a long period in service or after a
sudden increase in vibration.
2.2.2 ALIGNMENT PRECONDITIONS
To simplify shaft alignment and prevent inaccuracy, ensure that the following steps are taken before
performing shaft alignment:
1. Ensure that pump hold down bolts are tight.
2. Do not connect suction and discharge piping to pump until after completion of initial cold
alignment.
3. Ensure that pads on baseplate and driver feet are thoroughly cleaned.
2.2.3 SETTING MOTOR SHAFT ENDSPACE
NOTE
If driver is motor with sleeve bearings, begin at step 1. If
driver is motor with ball bearings or steam turbine, begin at
step 3.
To prevent destruction of motor sleeve bearings, which are usually found in heavy-duty electric
motors, locate your motor in relation to the pump so as to ensure a running clearance of 0.13 in (3
mm) between the thrust collar on the motor shaft and the face of the bearings (see Figure 2-6). To
establish the required end space proceed as follows:
DO2604-13 - 2-6 -