Method for extracting packets of blades from a steam turbine
US5031311A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | May 3, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49822
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of extracting packets of blades (1) insertable radially into a disk (5) of a steam turbine rotor, for the purpose of being fixed therein. The flat situated above the feet of the blades are clamped and then pulled out radially. Apparatus for performing the method comprises two levers (15) hinged to each other such that moving the rear arms (18) apart causes the front arms (17) fitted with jaws (20) to clamp against the flats of the blades. Actuators (23) move the entire apparatus (14) radially away from the disk (5). The packets of blades (1) are extracted without being damaged and they may be reused after the disk (5) has been repaired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.