Method for managing a gas turbine assembly at low speed and corresponding gas turbine assembly
US10443432B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2015 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | May 27, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/304
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method manages a gas turbine assembly during start up or shut down, the gas turbine assembly including a twin shaft gas turbine having an input shaft and an output shaft and a speed sensor for measuring a speed of the output shaft, the gas turbine assembly further having a rotor mounted on said output shaft and provided with at least a dry gas seal for preventing leakage of a process gas. The method includes monitoring the speed of the output shaft, and in parallel, reducing or increasing the speed of the input shaft after the monitored speed of the output shaft has remained above zero and below a predefined slow roll speed limit for a predefined acceptable time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.