Manifold drain system for gas turbine
US6442925B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Oct 5, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system is disclosed for draining residual fuel from the engine manifold of a gas turbine which includes an ejector having an inlet port for receiving high pressure fuel from a main fuel pump at engine shut-down, an outlet port and a suction port. The ejector defines a nozzle that extends between the inlet port and the outlet port for increasing the velocity of high pressure fuel flowing therethrough at engine shut-down so as to create suction at the suction port. A motive valve controls the flow of high pressure fuel between the main fuel pump and the inlet port of the ejector. The motive valve is configured for movement between a first position wherein high pressure fuel is directed from the main fuel pump to the engine manifold during engine start-up and operation, and a second position wherein high pressure fuel is directed from the main fuel pump to the inlet port of the ejector at engine shut-down. A drain valve controls the flow of residual fuel between the engine manifold and the suction port of the ejector. The drain valve is configured for movement between a closed position and an open position as the motive valve moves between the first position and the second position,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.