Solving Compressor Impeller Rub Problems During Mechanical Run Tests: Heat dissipation Improved, Impeller expansion limited by shifting molecular weight of compressed medium

摘要

To validate the rotor dynamic design of centrifugal compressors, mechanical run tests generally are conducted in OEM test facilities. In a nutshell, the test validates the critical speed calculations and amplitudes in steady state (four hours at maximum continuous speed) and transient conditions (while passing through critical speed). The agenda generally follows clause 4.3.6 of chapter 1 and clause 4.3.1 of chapter 2 in API 617, 7th Edition.