CPC F01D 21/12 (2013.01) [F01D 17/145 (2013.01); F01D 21/003 (2013.01); F01D 25/14 (2013.01); F01D 25/26 (2013.01); F05D 2260/232 (2013.01); F05D 2260/60 (2013.01); F05D 2270/303 (2013.01); F05D 2270/3013 (2013.01); F05D 2270/80 (2013.01)] | 20 Claims |
1. A temperature gradient control system for a double wall casing of a compressor, wherein the double wall casing comprises an inner casing and an outer casing and wherein a flow of air is pulled through the double wall casing via a pressure differential from the compressor when the compressor is operating, the temperature gradient control system comprising:
upper discharge piping in communication with a top of the double wall casing;
the upper discharge piping comprising an upper modulation valve;
lower discharge piping in communication with a bottom of the double walled casing;
the lower discharge piping comprising a lower modulation valve; and
wherein the upper modulation valve and/or the lower modulation valve modulate the flow of air pulled through the double wall casing to reduce a temperature gradient across the outer casing.
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