System and method for online inspection of turbines including aspheric lens
US8896661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2012 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Nov 2, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Optical camera systems for nondestructive internal inspection of online, operating power generation turbines, including gas turbine combustor and turbine sections that are at high operating temperatures in the range of over 600° C. (1112° F.) and which include combustion gas contaminants. The inspection system includes one or more aspheric lenses capable of withstanding continuous operating temperatures above 600° C. The aspheric lenses, alone or in combination with spherical lenses, establish a wider field of view, and require fewer lenses in combination than lens mounts incorporating only spherical lenses. A cooling system incorporated in the inspection system facilitates continuous operation and inhibits lens external surface fouling from combustion gasses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.