Rotor and turbo machine including same

Patent metadata

Field	Value
Publication number	US-11415017-B2
Application number	US-202117346312-A
Country	US
Kind code	B2
Filing date	Jun 14, 2021
Priority date	Aug 28, 2020
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A sealing assembly for sealing a gap between a first component and a second component is provided. The sealing assembly includes a sealing body disposed between the first component and the second component and a pressing member disposed between the sealing body and the second component, configured to press the sealing body toward the first component, and configured to extend and compress in a circumferential direction of the first component.

First claim

What is claimed is:

1. A sealing assembly for sealing a gap between a first component and a second component, the sealing assembly comprising:
a sealing body disposed between the first component and the second component; and
a pressing member disposed between the sealing body and the second component, configured to press the sealing body toward the first component, and configured to extend and compress in a circumferential direction of the first component,
wherein the sealing body includes a recess extending in the circumferential direction and formed on a second-side surface facing the second component, and the pressing member is installed in the recess.

2. The sealing assembly according to claim 1 , wherein the second component includes a sealing groove on a first-side surface facing the first component,
the sealing body is inserted into the sealing groove, and
the pressing member is inserted into the sealing groove and disposed on an opposite side of the first component with the sealing body interposed therebetween.

3. The sealing assembly according to claim 1 , wherein the pressing member comprises:
a first pressing portion fixed to the sealing body;
a second pressing portion spaced from the first pressing member in the circumferential direction of the first component and installed to move along a surface of the sealing body in the circumferential direction; and
a third pressing portion connected to both ends of the first pressing portion and the second pressing portion.

4. The sealing assembly according to claim 3 , further comprising a fixing member installed to extend through the first pressing portion and the sealing body to fix the first pressing portion to the sealing body.

5. The sealing assembly according to claim 3 , wherein the third pressing portion protrudes convexly in a first direction away from the sealing body such that a distal end of the third pressing portion in the first direction is farthest from the sealing body in a middle portion of the third pressing portion in the circumferential direction and closest to the sealing body at both ends of the third pressing portion in the circumferential direction.

6. The sealing assembly according to claim 2 , wherein the sealing body includes a cord groove formed in a radially outer end portion and extending in the circumferential direction, and
the sealing assembly further comprises a cord seal seated in the cord groove, extending in a circumferential direction of the sealing body, and installed to contact a radially outer-side inner wall of the sealing groove.

7. The sealing assembly according to claim 6 , further comprising a protrusion protruding outward from the sealing body in the radial direction,
wherein the cord groove is formed in a radially outer portion of the protrusion.

8. The sealing assembly according to claim 1 , wherein the sealing body has a chamfered surface on a radially outer portion of a first-side surface thereof facing the first component.

9. The sealing assembly according to claim 7 , wherein the sealing body has a chamfered surface on a radially outer portion of a first-side surface thereof facing the first component, and
the protrusion is spaced from the chamfered surface and disposed on a side of the second component.

10. A turbo machine comprising:
a stator configured to guide fluid flowing through an inside thereof; and
a rotor disposed in the stator and rotated by the fluid flowing through the inside of the stator,
wherein the stator comprises a casing, first and second vane carriers positioned inside the casing in a radial direction of the casing and disposed adjacent to each other in an axial direction of the casing, a plurality of vanes coupled to the respective inner circumferential surfaces of the first and second vane carriers, and a sealing assembly configured to seal a gap between the first vane carrier and the second vane carrier, and
wherein the sealing assembly comprises a sealing body disposed between the first vane carrier and the second vane carrier and a pressing member disposed between the sealing body and the second vane carrier, configured to extend and compress in a circumferential direction of the first vane carrier, and configured to press the sealing body toward the first vane carrier,
wherein the sealing body includes a recess extending in the circumferential direction and formed on a second-side surface facing the second vane carrier, and the pressing member is installed in the recess.

11. The turbo machine according to claim 10 , wherein the second vane carrier includes a sealing groove on a first-side surface facing the first vane earner,
the sealing body is inserted into the sealing groove, and
the pressing member is inserted into the sealing groove and disposed on an opposite side of the first vane carrier with the sealing body interposed therebetween.

12. The turbo machine according to claim 10 , wherein the pressing member comprises:
a first pressing portion fixed to the sealing body;
a second pressing portion spaced from the first pressing member in the circumferential direction of the first vane carrier and installed to move along a surface of the sealing body in the circumferential direction; and
a third pressing portion connected to both ends of the first pressing portion and the second pressing portion.

13. The turbo machine according to claim 12 , further comprising a fixing member installed to extend through the first pressing portion and the sealing body to fix the first pressing portion to the sealing body.

14. The turbo machine according to claim 12 , wherein the third pressing portion protrudes convexly in a first direction away from the sealing body such that a distal end of the third pressing portion in the first direction is farthest from the sealing body in a middle portion of the third pressing portion in the circumferential direction and closest to the sealing body at both ends of the third pressing portion in the circumferential direction.

15. The turbo machine according to claim 11 , wherein the sealing body includes a cord groove formed in a radially outer end portion and extending in the circumferential direction, and
the sealing assembly further comprises a cord seal seated in the cord groove, extending in a circumferential direction of the sealing body, and installed to contact a radially outer-side inner wall of the sealing groove.

16. The turbo machine according to claim 15 , further comprising a protrusion protruding outward from the sealing body in the radial direction,
wherein the cord groove is formed in a radially outer portion of the protrusion.

17. The turbo machine according to claim 10 , wherein the sealing body has a chamfered surface on a radially outer portion of a first-side surface thereof facing the first vane carrier.

18. The turbo machine according to claim 16 , wherein the sealing body has a chamfered surface on a radially outer portion of a first-side surface thereof facing the first vane carrier, and
the protrusion is spaced from the chamfered surface and disposed on a side of the second vane carrier.

Assignees

• Doosan Enerbility Co Ltd

Inventors

• Ju Eui Jun

Classifications

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• F16J15/06

  with solid packing compressed between sealing surfaces · CPC title

• F05D2220/32

  in gas turbines · CPC title

• F01D25/246

  Fastening of diaphragms or stator-rings · CPC title

• F05D2260/38

  by a spring, i.e. spring loaded or biased towards a certain position · CPC title