Bearing arrangement and bearing block having a magnetic radial bearing and a touchdown bearing for a rotating machine
AssigneeSiemens Aktiengesellschaft
InventorsGünther Siegl, Hartmut Walter
Life of this patent
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Abstract
A bearing arrangement and a bearing block includes a magnetic radial bearing for the contact-less support of a rotor shaft of a rotating machine, and a touchdown bearing for catching the rotor shaft. Both bearings are connected to each other permanently and in an axially aligned manner, and are elastically suspended with regard to a bearing shield, a machine housing, or a foundation of the rotating machine.
Claims12
A bearing arrangement for a rotor shaft of a turbomachine having an electric power output of at least 1000 kW, said bearing arrangement comprising:
- a bearing housing;
- a magnetic radial bearing for contactless support of the rotor shaft;
- and
- a touchdown bearing for catching the rotor shaft,
- wherein the radial and touchdown bearings are fixedly interconnected and accommodated in axial alignment in the bearing housing, and
- wherein the bearing housing is elastically suspended with regard to a bearing bracket or a machine casing.
A bearing arrangement for a rotor shaft of a turbomachine having a power output of at least 1000 kW, said bearing arrangement comprising:
- a housing;
- a magnetic radial bearing for contactless support of the rotor shaft;
- and
- a touchdown bearing for catching the rotor shaft,
- wherein the radial and touchdown bearings are accommodated in axial alignment in the bearing housing and elastically suspended in the bearing housing, and
- wherein the bearing housing is fixedly connected to a bearing bracket or to a machine casing.
A bearing block arranged axially on the outside of a turbomachine having a power output of at least 1000 kW, said bearing block comprising:
- a bearing housing;
- a magnetic radial bearing for contactless support of a rotor shaft of the turbomachine;
- a touchdown bearing for catching the rotor shaft of the turbomachine, and
- a support for fastening the bearing housing on a machine casing or on a bedplate of the turbomachine
- wherein the radial and touchdown bearings are fixedly interconnected and accommodated in axial alignment in the bearing housing, and
- wherein the radial and touchdown bearings are elastically accommodated in the bearing housing.
A bearing block arranged axially on the outside of a turbomachine having a power output of at least 1000 kW, said bearing block comprising:
- a bearing housing;
- a magnetic radial bearing for contactless support of a rotor shaft of the turbomachine;
- a touchdown bearing for catching the rotor shaft of the turbomachine;
- a support for fastening the bearing housing on a machine casing or on a bedplate of the turbomachine;
- and
- at least one elastic element arranged at a location selected from the group consisting of between the bearing housing and the support, between the support and the machine casing, between the support and the bedplate, and combinations thereof,
- wherein the radial and touchdown bearings are accommodated in axial alignment and fixed in the bearing housing.
Dependencies are inferred from the claim text.