Patent ID: 9200643
Filing Date: 2015-12-01
Classification: F04D

Abstract:
1. A fluid compression system, comprising: a hermetically-sealed housing having a motor end and a compressor end and defining a plurality of internal cooling passages; a motor arranged within the housing and being coupled to a rotatable shaft, the motor being in fluid communication with the plurality of internal cooling passages; a compressor axially-spaced from the motor and coupled to the shaft within the housing; radial bearings arranged at each end of the shaft and in fluid communication with the plurality of internal cooling passages; one or more carbon ring seals arranged about the shaft on either side of the compressor and inboard from the radial bearings, each carbon ring seal being configured to prevent leakage of process gas into the plurality of internal cooling passages; an impeller axially-spaced from the compressor and coupled to a free end of the shaft, whereby rotation of the shaft drives the impeller and circulates a cooling gas in a closed cooling loop through the plurality of internal cooling passages; and an external gas conditioning skid fluidly coupled with and disposed downstream from the impeller, the external gas conditioning skid configured to receive the cooling gas from the impeller and direct at least a portion of the cooling gas to the one or more carbon ring seals.