Asea Brown Boveri Ag

J&uuml;rg Greber

Dirk Wunderwald

Ulf Christian M&uuml;ller

Joachim Bremer

Helmut Gieszauf

Michajlo Bothien

Mihajlo Bothien

A method for cooling the flow in radial gaps formed between rotors and stators of turbomachines, which method is improved with regard to its cooling effect. In addition, a simple, cost-effective and robust arrangement for realizing the method is to be specified. According to the invention, this is achieved in that a first cooling fluid is admitted to a stator part adjacent to the radial gap and a second, gaseous cooling fluid is introduced into the radial gap. To this end, either at least one recess is formed in the interior of the stator part adjacent to the radial gap or at least one cavity is arranged at the stator part. The recess or the cavity is connected to both a feed line and a discharge line for the first cooling fluid. In addition, at least one feed passage as well as a discharge device for the second cooling fluid are arranged at the radial gap.

Method and arrangement for cooling the flow in radial gaps formed between rotors and stators of turbomachines

A method of cooling the flow in radial gaps formed between rotors and stators turbo machines is provided. The method includes the step of using water as a cooling fluid for the stator part adjacent to the radial gap. To this end, either at least one recess is formed in the interior of the stator part adjacent to the radial gap or at least one cavity is arranged at the stator part. The recess or the cavity is connected to both a feed line and a discharge line for the cooling fluid.

Method and arrangement for the indirect cooling of the flow in radial gaps formed between rotors and stators of turbomachines

The object of the invention is to create a centrifugal compressor with a cooling appliance which is simpler but more effective. This is achieved by the feed device (,) for the gaseous cooling medium (,) opening into the separating gap upstream of the mainly radially extending gap region (,) of the separating gap (,).

Growing community of inventors

Wettingen, Switzerland

Jürg Greber

Growing community of inventors

Wettingen, Switzerland

J&uuml;rg Greber

Jürg Greber