Assessing Liquid Droplet Erosion Potential in Centrifugal Compressor Impellers
نویسندگان
چکیده
This paper presents a method for estimating the potential for liquid droplet erosion in compression system components, such as the impeller of centrifugal compressors. The erosion model selected is used to calculate a threshold velocity that represents the limit for the onset of erosion damage. The parameters used in the model include the liquid phase density and viscosity, impeller geometry, shaft rotational speed, impeller material hardness, maximum droplet diameter size, and sonic velocity of the liquid phase. The potential for erosion is assessed by comparing the threshold velocity with the maximum expected impact velocity. The model was benchmarked against several industry standards and the original equipment manufacturer’s (OEM) own expertise regarding blade protection from liquid erosion in steam turbines. The results from the proposed erosion potential method agreed closely with the steam turbine experience.
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