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Case study of solutions to screw compressor package vibrations
Technical paper – GMRC Gas Machinery Conference 2019
Abstract
Three oil-flood screw compressor packages in propane service experienced excessive vibration, noise and small-bore connection failures.
This case study describes vibration, pulsation and multi-channel shell-mode measurements and simulations of the acoustical system. The data demonstrates how compressor-volume index (VI) and slide-valve position influence pulsation and resonances and quantifies the effects of constrained-layer damping to reduce mechanical vibration. Optimized solutions to reduce pulsations and vibrations are presented, including field data of the initial and modified systems.
Purchasers and operators of screw compressors can apply the recommendations to minimize the risk of vibration-related failures. Relevant API and industry guidelines are also discussed.
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