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US 8,944,761 B2Granted
Welded rotor, a steam turbine having a welded rotor and a method for producing a welded rotor
AssigneeGeneral Electric Company
InventorsThomas Joseph Farineau, Robert G. Baran, Manuel Julio Gomez Fernandez
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Abstract
A welded rotor, a steam turbine having a welded rotor, and a method of producing a welded rotor are disclosed. The welded rotor includes a high pressure section and an intermediate pressure section. The high pressure section includes a high temperature material section joined to a low temperature material section.
Claims20
A rotor, comprising:
- a high pressure section having a first end and a second end and a high pressure casing, the second end extending beyond the high pressure casing;
- and
- an intermediate pressure section mechanically joined at a shaft of the rotor to the second end of the high pressure section, the intermediate pressure section having an intermediate pressure casing;
- wherein the high pressure section comprises
- a high temperature material section formed of a high temperature material, and having a first end and a second end opposite thereof;
- a first low temperature material section formed of a first low temperature material, the first low temperature material section joined to the first end of the high temperature material section at a first joint;
- and
- a second low temperature material section formed of a second low temperature material, the second low temperature material section joined to the second end of the high temperature material at a second joint, the second joint being within the high pressure section;
- wherein the first joint is located within the high pressure section on the rotor at a position along a high pressure main steam flow path at or adjacent a blade secured to the rotor.
6 more elements
A steam turbine, comprising:
- a rotor, comprising:
- a high pressure section having a first end and a second end and a high pressure casing, the second end extending beyond the high pressure casing;
- and
- an intermediate pressure section mechanically joined at a shaft of the rotor to the second end of the high pressure section, the intermediate pressure section having an intermediate pressure casing;
- wherein the high pressure section comprises
- a high temperature material section formed of a high temperature material, and having a first end and a second end opposite thereof;
- a first low temperature material section formed of a first low temperature material, the first low temperature material section joined to the first end of the high temperature material section at a first joint;
- and
- a second low temperature material section formed of a second low temperature material, the second low material section joined to the second end of the high temperature material at a second joint, the second joint being within the high pressure section;
- wherein the first joint is located within the high pressure section on the rotor at a position along a high pressure main steam flow path at or adjacent a blade secured to the rotor.
7 more elements
A method of manufacturing a rotor, comprising:
- providing a shaft high pressure section having a high pressure casing;
- and
- mechanically joining a shaft intermediate pressure section having an intermediate pressure casing to the shaft high pressure section at a shaft of the rotor extending beyond the high pressure casing;
- wherein the shaft high pressure section comprises:
- a high temperature material section having a first end and a second end;
- and
- a first low temperature material section joined to the first end of the high temperature material section at a first joint;
- and
- a second low temperature material section is joined to the second end
- of the high temperature material section at a second joint, the second joint being within the high pressure section;
- wherein the first joint is located within the high pressure section on the rotor at a position along a high pressure main steam flow path at or adjacent a blade secured to the rotor.
8 more elements
Dependencies are inferred from the claim text.