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US 9,429,191 B2Granted
Journal bearing assemblies and methods of assembling same
AssigneeGeneral Electric Company
InventorsBugra Han Ertas, Adolfo Delgado Marquez, Darren Lee Hallman, Walter John Smith
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Abstract
A journal bearing assembly includes a bearing housing, a plurality of bearing pads, and a plurality of bearing pad support assemblies. The bearing housing includes a radial outer wall. The plurality of bearing pads are mounted within the bearing housing, and include at least one of a gas permeable porous media and an array of gas delivery holes. The plurality of bearing pad support assemblies are radially interposed between the bearing pads and the radial outer wall. Each of the bearing pad support assemblies includes a spring assembly and a damper assembly.
Claims16
A journal bearing assembly comprising:
- a bearing housing comprising a radial outer wall;
- a plurality of bearing pads mounted within said bearing housing, said bearing pads comprising at least one of a gas permeable porous media and an array of gas delivery holes;
- and
- a plurality of bearing pad support assemblies radially interposed between said bearing pads and said radial outer wall, each said bearing pad support assembly comprising:
- a spring assembly;
- and
- a damper assembly comprising a hermetically sealed fluid-filled damper, wherein the hermetically sealed fluid-filled damper comprises:
- a sealed damper housing comprising a body having a cavity and a resistive flow path defined therein, the cavity and the resistive flow path being filled with a viscous fluid;
- a plunger disposed within the cavity, said plunger separating the cavity into a first control volume and a second control volume, wherein the resistive flow path provides fluid communication between the first and second control volumes;
- and
- a load transferring member coupled to said plunger, said load transferring member configured to transmit mechanical loads imparted on said bearing pads to said plunger.
8 more elements
A turbomachine comprising:
- a casing defining a process chamber;
- a rotor assembly comprising a rotatable shaft positioned within the process chamber;
- and
- a journal bearing assembly supporting said shaft, said bearing assembly comprising:
- a bearing housing;
- a plurality of bearing pads mounted within said bearing housing, said bearing pads comprising at least one of a gas permeable porous media and an array of gas delivery holes;
- and
- a plurality of bearing pad support assemblies radially interposed between said bearing pads and said bearing housing, at least one of said bearing pad support assemblies comprising a damper assembly comprising a hermetically sealed fluid-filled damper assembly, said bearing assembly configured to receive a process gas from the process chamber and transmit the process gas to said bearing pads to provide lubrication between said shaft and said bearing pads, wherein the hermetically sealed fluid-filled damper comprises:
- a sealed damper housing comprising a body having a cavity and a resistive flow path defined therein, the cavity and the resistive flow path being filled with a viscous fluid;
- a plunger disposed within said cavity, said plunger separating the cavity into a first control volume and a second control volume, wherein the resistive flow path provides fluid communication between the first and second control volumes;
- and
- a loading member coupled to said plunger, said loading member configured to transmit mechanical loads imparted on said bearing pads to said plunger.
9 more elements
A method of assembling a journal bearing assembly, said method comprising:
- providing a bearing housing including a radial inner wall and a radial outer wall;
- providing a plurality of bearing pads including at least one of a gas permeable porous media and an array of gas delivery holes;
- coupling the plurality of bearing pads along the radial inner wall of the bearing housing;
- providing a plurality of bearing pad support assemblies, each of the bearing pad support assemblies including a spring assembly and a damper assembly comprising at least one hermetically sealed fluid-filled damper, wherein the at least one hermetically sealed fluid-filled damper is coupled to a bearing pad such that mechanical loads imparted to the bearing pad are transmitted to the at least one hermetically sealed fluid-filled damper;
- and
- coupling the damper assemblies within the bearing housing.
3 more elements
Dependencies are inferred from the claim text.