FIELD: machine engineering.
SUBSTANCE: stage (10) of the compressor with a suction union from stator side through which sealing medium to be compressed in the section of the compressor stage can be fed into the compressor stage with an inlet channel (11) from the stator side, through which the sealing medium exiting from a nozzle can be transported in the direction towards a working wheel (14) from the rotor side. The working wheel (14) has a radial inner hub (16), a radial outer cover disc (17) and extending between the hub (16) and the disc cover (17) of working wheel blade (18). To measure the variable differential pressure in the compressor stage, a positive measurement point and a negative measurement point are provided in the compressor stage. The negative measurement point is positioned upstream of the working wheel (14) outside the inlet channel (11) on the stator side in the annular gap branching from an inlet slit (24).
EFFECT: optimised compressor operation.
9 cl, 3 dwg
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