CPC F25B 11/04 (2013.01) [F04D 25/06 (2013.01); F04D 29/057 (2013.01); F04D 29/058 (2013.01); F25B 1/053 (2013.01); F25B 31/026 (2013.01)] | 10 Claims |
1. An integrated expander and motor-compressor assembly comprising:
one housing;
at least two transmission shafts, each supported in the housing by at least two radial bearings;
a flexible coupling device connecting the transmission shafts;
an electric motor mounted on a first transmission shaft; an expander cantilevered at a free end of a second transmission shaft; and,
at least one compression section mounted between the two radial bearings on the second transmission shaft and having a high pressure part and a low pressure part fluidly coupled to the high pressure part so that a gas coming out of the low pressure part is compressed in the high pressure part,
wherein the integrated expander and motor-compressor assembly comprises:
a gas diffuser positioned between the expander and a first radial bearing of the second transmission shaft, the first bearing being the closest bearing to the expander, and
a first duct connected between the gas diffuser and the first radial bearing and connected to an inlet of the low pressure part,
wherein the gas diffuser is configured to diffuse gas directed to the expander and to the first radial bearing,
wherein the gas diffuser is configured to be fed with a part of the gas entering the high pressure part,
wherein the first duct being configured to draw up a part of the diffused gas.
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