Evaluation
of Reciprocating Compressor Foundations Using Vibration Measurements
K. E. Atkins/S. M. Price, PCRC 7th Annual Reciprocating
Machinery Conference, Denver, CO, September 1992.
Foundations for reciprocating compressors are an integral part of
the structural system. In many cases, the foundation is required
to provide additional lateral stiffness to the compressor frame
to support the forces and moments generated by the compressor. Deterioration
of the foundation can result in differential bending deflection
of the frame between each main bearing, potentially causing crankshaft
or other component failures. Therefore, the long-term reliability
of reciprocating machinery depends to a large degree on the integrity
of the foundation and anchor bolt system.
An approach
will be demonstrated that can show deficiencies in the foundation
and anchor bolt system using relatively simple vibration measurement
techniques. Data will be presented illustrating several types
of failures that were detected and monitored with the techniques.
Using these data, it was possible to propose minor repairs and
improved maintenance procedures which were effective in extending
the life of the compressor and foundation, thus minimizing costly
downtime.
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