Water removal device for steam turbine
US10001032B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2014 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Apr 12, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/314
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hollow portion is formed inside a stator blade. A slit having an inlet opening on a pressure surface of the stator blade facing wet steam flow is formed that communicates with the hollow portion in the axial direction of the stator blade. The hollow portion communicates with a region having a lower pressure than the flow field of the wet steam flow. The pressure in the hollow portion is reduced to introduce water film flow formed from water drops on the pressure surface of the stator blade to the slit. The slit is formed at a downstream side end, in the flow direction of the wet steam flow, of the hollow portion, and the stator blade trailing edge side wall surface of the slit is at an acute angle to a leading edge side reference plane of the pressure side of the stator blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.