FIELD: power engineering.
SUBSTANCE: device for extraction of energy from a compressed gas flow comprises an expansion turbine, having an expansion turbine impeller, and a generator comprising a rotor and a stator. A radial inlet flow arrives into an expansion turbine impeller. The generator comprises a rotor and a stator. The rotor is rotated by the expansion turbine impeller. The external surface of the stator comprises cooling ribs. The expansion turbine and the rotor are installed in the pipe section. The face side of the expansion turbine impeller faces the generator. In the device there is an unlimited passage for an expanded gas flow providing for communication by means of a gas flow between a face side of the expansion turbine impeller and the external surface of the stator. Such multiple devices may be arranged in series. The distribution pipeline of natural gas comprises the specified device.
EFFECT: improved heat removal from a generator without necessity in external cooling.
15 cl, 3 dwg
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