Method and apparatus for uprating and controlling a solid fuel pulverized and exhauster system for a steam generator
US6564727B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2002 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Jan 25, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23K2203/201
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method for retrofitting a solid fuel pulverizer and exhauster system includes replacing the bowl drive motor 38 with a new drive motor which is operable to drivingly rotate the bowl 12 at the pre-retrofit speed but which provides relatively more horsepower than the replaced bowl drive motor 38 and replacing the original exhauster fan coupling with a new exhauster fan gear set 46, 48 which effects rotation of the exhauster fan 30 at a relatively higher rotational speed than the pre-retrofit speed. A solid fuel pulverizer and exhauster system of the present invention acting in cooperative association with a fuel-fired steam generating power plant includes an exhauster fan transmission assembly 50, 52 operable to translate the rotation of the drive shaft 54 of the exhauster fan drive motor 44 through ninety (90) degrees to thereby effect rotation of the fan by the exhauster fan drive motor 44.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.