Steam turbine
US11492920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2018 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Feb 17, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/447
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A steam turbine includes a rotor; a casing which houses the rotor; a plurality of rotor blades disposed around the rotor; and a plurality of stationary vanes supported on the casing. The stationary vane includes a vane body portion and an inner race positioned on an inner side of the vane body portion in a radial direction of the rotor. The stationary vanes include a first stationary vane having a through hole formed through the vane body portion. The rotor has a cavity having a concave shape and being formed such that at least a part of the inner race of the first stationary vane is housed in the cavity. The steam turbine includes a steam passage to discharge steam extracted from a space upstream of the first stationary vane in the casing to the cavity from the inner race through the through hole of the first stationary vane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.