Axial-centrifugal compressor having system for controlling play

摘要

In an axial-centrifugal compressor, the rotor of which includes an impeller, axial play is controlled by a special air ventilation to the rotor, by a circuit including two parallel arms, flow rates of which are both controlled by respective veins, and moreover the temperature in one of them is changed by a heat exchanger. The ventilation air is thus controlled, both in terms of temperature and flow rate.

主权项

1. An axial centrifugal compressor comprising:
a rotor including an axial portion and a spread-out portion, the spread-out portion including an impeller of the rotor; and a stator, separated from the rotor by a flow vein, and including an axial portion and a spread-out portion, the axial portions of the rotor and stator being concentric with an axis line and spaced apart by an amount of radial play, and the spread-out portions of the rotor and stator being aligned along the axis line and spaced apart by an amount of axial play, and a ventilation circuit that adjusts the amount of axial play between the spread-out portions of the rotor and stator, the ventilation circuit extending from the stator into a cavity inside the rotor and including:
a first arm having a first valve that adjusts an opening amount of the first arm, and a second arm having a heat exchanger and a second valve that adjusts an opening amount of the second arm.