Turbine stator blade and steam turbine
US11719132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2020 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Jul 20, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/51
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbine stator blade (21) includes a pressure side (21P) extending in a radial direction intersecting a flow direction of steam, and facing upstream in the flow direction. A slit (5) extending in the radial direction and capturing a liquefied component of the steam is formed on a downstream side of the pressure side (21P). A hydrophilic uneven region (6) having a liquid film capacity greater than that of the pressure side (21P) by being recessed in a depth direction intersecting the pressure side (21P) is formed in a further upstream position than the slit (5). The hydrophilic uneven region (6) has a depth in the depth direction increasing and a flow resistance decreasing toward downstream and toward the slit (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.