Centerline support bar for steam turbine component

Patent metadata

Field	Value
Publication number	US-9500130-B2
Application number	US-201313785869-A
Country	US
Kind code	B2
Filing date	Mar 5, 2013
Priority date	Mar 5, 2013
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A centerline support bar for steam turbine component assembly, installation, and/or alignment is disclosed. In one embodiment, the support bar includes a body portion configured to be disposed across a centerline of a steam turbine, the body portion configured to transversely connect to a steam turbine component; and a first flange extending from the body portion and configured to contact a steam turbine casing, wherein the steam turbine support bar is configured to non-affixedly join the steam turbine casing to the steam turbine component.

First claim

What is claimed is:

1. A steam turbine support bar comprising:
a body portion configured to be transversely disposed across a centerline of a steam turbine, the body portion configured to connect to a steam turbine component;
a first flange extending from the body portion and configured to contact a steam turbine casing, wherein the steam turbine support bar is configured to non-affixedly join the steam turbine casing to the steam turbine component; and
a second flange configured to be completely disposed above the centerline and proximate the first flange and extending from the body portion in a direction opposite the first flange, the second flange configured to contact the steam turbine component,
wherein the second flange includes a hook portion configured to matingly engage with a portion of steam turbine component.

2. The steam turbine support bar of claim 1 , wherein the first flange is configured to complement a set of shims disposed between the steam turbine casing and the first flange, the set of shims disposed on a horizontal joint of the steam turbine.

3. The steam turbine support bar of claim 1 , wherein the first flange is configured to be completely disposed above the centerline.

4. The steam turbine support bar of claim 1 , wherein the body portion is configured to connect to the steam turbine component beneath the centerline.

5. The steam turbine support bar of claim 1 , wherein the body portion defines a set of apertures configured to complement a set of connectors.

6. The steam turbine support bar of claim 5 , wherein the set of apertures include a countersink.

7. The steam turbine support bar of claim 1 , further comprising a third flange extending from the body portion beneath the centerline, the third flange configured to connect to the steam turbine component.

8. The steam turbine support bar of claim 7 , wherein the body portion defines a set of apertures configured to complement a set of connectors and at least one of the set of apertures is defined through the third flange, and wherein the set of apertures includes two apertures located beneath the centerline.

9. A steam turbine nozzle support assembly comprising:
a steam turbine casing;
a semi-annular diaphragm segment at least partially housed within the steam turbine casing; and
a steam turbine support bar disposed between the steam turbine casing and the semi-annular diaphragm segment, the steam turbine support bar connected to the semi-annular diaphragm segment and including:
a body portion configured to be transversely disposed across a centerline of a steam turbine, the body portion configured to connect to the semi-annular diaphragm segment;
a first flange extending from the body portion and contacting the steam turbine casing above the centerline, wherein the steam turbine support bar is configured to non-affixedly join the steam turbine casing to the steam turbine component; and
a second flange completely disposed above the centerline, proximate the first flange and extending from the body portion in a direction opposite the first flange, the second flange configured to contact the semi-annular diaphragm segment.

10. The steam turbine nozzle support assembly of claim 9 , wherein the first flange is configured to complement a set of shims disposed between the steam turbine casing and the first flange, the set of shims disposed on a horizontal joint of the steam turbine.

11. The steam turbine nozzle support assembly of claim 9 , wherein the body portion is connected to steam turbine component beneath the centerline.

12. The steam turbine nozzle support assembly of claim 9 , wherein the body portion defines a set of apertures configured to complement a set of connectors.

13. The steam turbine nozzle support assembly of claim 12 , wherein the set of apertures include a countersink.

14. The steam turbine nozzle support assembly of claim 9 , further comprising a third flange extending from the body portion beneath the centerline, the third flange configured to connect to the steam turbine component.

15. The steam turbine nozzle support assembly of claim 14 , wherein the body portion defines a set of apertures configured to complement a set of connectors and at least one of the set of apertures is defined through the third flange.

16. The steam turbine nozzle support assembly of claim 9 , wherein the second flange includes a hook portion configured to matingly engage with a portion of the semi-annular diaphragm segment.

17. The steam turbine nozzle support assembly of claim 16 , further comprising a fillet disposed between the body portion and the first flange.

18. A steam turbine apparatus comprising:
a casing having a horizontal joint surface;
a rotor within the casing; and
a steam turbine nozzle support assembly including:
a semi-annular diaphragm segment at least partially housed within the casing; and
a support bar connected to the semi-annular diaphragm segment and in contact with the casing, the support bar including:
a body portion configured to be transversely disposed across a centerline of a steam turbine, the body portion configured to connect to the semi-annular diaphragm segment beneath the centerline;
a first flange extending from the body portion and contacting the horizontal joint surface, wherein the steam turbine support bar is configured to non-affixedly join the steam turbine casing to the steam turbine component; and
a second flange completely disposed above the centerline, proximate the first flange and extending from the body portion in a direction opposite the first flange, the second flange configured to contact the semi-annular diaphragm segment.

19. The steam turbine apparatus of claim 18 , wherein the first flange is configured to be disposed above the centerline and the body portion is connected to the semi-annular diaphragm beneath the centerline.

Assignees

• Gen Electric

Inventors

• Swan Stephen Roger
• Renninger Matthew Edward
• Roy Kevin John Lewis
• Sankolli Prashant Prabhakar

Classifications

• F01D25/28

  Supporting or mounting arrangements, e.g. for turbine casing · CPC title

• F01D25/246

  Fastening of diaphragms or stator-rings · CPC title

• F02C7/20 Primary

  Mounting or supporting of plant; Accommodating heat expansion or creep · CPC title

• F05D2220/31

  in steam turbines · CPC title

• F01D9/042 Primary

  fixing blades to stators (fixing stator-rings in the casing or to each other F01D25/246) · CPC title