Sealing assembly for reducing thrust and turbomachine including the same
AssigneeHanwha Powersystems Co., Ltd
InventorsBhavesh Patel, Robert Pelton
Life of this patent
Estimating the term…
Abstract
A sealing assembly, which is mounted at a rear end of an impeller, and a turbo machine including the sealing assembly is provided, the sealing assembly includes a rotation body having a ring shape that surrounds a shaft coupled with the impeller at the rear end of the impeller; and an extension portion extending from the rotation body to the rear end of the impeller, such that an inner space is formed between the rotation body and the rear end of the impeller, wherein the extension portion is sealingly coupled with the rear end of the impeller.
Claims18
A sealing assembly, which is mounted at a rear end of an impeller, the sealing assembly comprising:
- a rotation body having a ring shape that surrounds a shaft coupled with the impeller at the rear end of the impeller;
- and
- an extension portion extending from the rotation body to the rear end of the impeller, such that an inner space is formed between the rotation body and the rear end of the impeller,
- wherein the extension portion is sealingly coupled with the rear end of the impeller,
- wherein an axial end surface of the shaft is coupled with an axial end surface of the impeller, at the rear end of the impeller, such that a joint is formed between the axial end surface of the shaft and the axial end surface of the impeller, and
- wherein a radially outer end of the joint is exposed to the inner space that is formed between the rotation body and the rear end of the impeller.
A turbomachine, comprising:
- an impeller configured to rotate at a high speed to suck a fluid;
- a shaft, the shaft including an axial end surface that is coupled with an axial end surface of the impeller at a rear end of the impeller such that a joint is formed between the axial end surface of the shaft and the axial end surface of the impeller, and the shaft is configured to integrally rotate together with the impeller;
- and
- a sealing assembly provided at the rear end of the impeller to reduce a thrust applied to the impeller,
- wherein the sealing assembly includes:
- a rotation body having a ring shape that surrounds the shaft;
- and
- an extension portion extending from the rotation body to the rear end of the impeller such that an inner space is formed between the rotation body and the rear end of the impeller,
- wherein the extension portion is sealingly coupled with the rear end of the impeller,
- wherein a cavity is formed between an end of the shaft and the rear end of the impeller, and
- wherein a radially outer end of the joint is exposed to the inner space, that is formed between the rotation body and the rear end of the impeller, and a radially inner end of the joint is exposed to the cavity, that is formed between the end of the shaft and the rear end of the impeller.
Dependencies are inferred from the claim text.