Compressor unit
AssigneeSiemens Aktiengesellschaft
InventorsRainer Gausmann, Gaston Mathijssen
Life of this patent
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Abstract
A compressor unit for underwater operation is provided. The compressor unit includes a compressor having a compressor rotor and a plurality of compressor stages. The compressor unit also includes an electric motor having a stator, a motor rotor, and a gastight housing which is provided with an inlet and an outlet. The motor rotor has two radial bearings, namely a first radial bearing and a second radial bearing, each arranged at the ends of the motor rotor. The compressor rotor has two radial bearings, namely a third radial bearing and a fourth radial bearing, each arranged at the ends of the compressor rotor. A coupling which transmits torque is arranged between the two rotors. The above arrangement provides a remedy for vibrations for especially large compressor units.
Claims12
A compressor unit for underwater operation, comprising:
- a compressor comprising a compressor rotor and a plurality of compressor stages;
- an electric motor comprising a stator a motor rotor and a gastight casing with an inlet and an outlet, wherein
- the motor rotor comprises a first radial bearing and a second radial bearing, wherein each of the first and second radial bearings is arranged at the ends of the motor rotor,
- the compressor rotor comprises a third radial bearing and a fourth radial bearing, each of the third and fourth radial bearings being arranged at an end of the compressor rotor,
- a torque transmitting coupling arranged between the compressor rotor and the motor rotor that connects the compressor and motor rotors to form a common rotor which extends in the vertical direction,
- wherein the compressor is designed such that, during operation of the compressor at a nominal rating of the compressor, a pressure difference is established over each of the compressor stages, and wherein, as a result of the pressure differences over the plurality of compressor stages, a thrust ensues, and
- wherein the ensuing thrust corresponds essentially to a weight force of the common rotor, and the orientation of the thrust is selected such that the thrust compensates for a weight force of the common rotor.
Dependencies are inferred from the claim text.