Inlet bleed heat system with ejector/mixer nozzles for noise reduction
US8272222B2 · kind B2 · utility
12Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2010 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Jan 30, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02K1/46
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An inlet bleed heat system in a gas turbine includes a compressor discharge extraction manifold that extracts compressor discharge air, an inlet bleed heat manifold receiving the compressor discharge air, and a plurality of acoustic dispersion nozzles disposed at an output end of the inlet bleed heat manifold that reduce a velocity of the compressor discharge air in the inlet bleed heat manifold. Noise is generated from the shearing action between the surrounding atmosphere and air jets from orifices. When the air jet velocity is slowed using, for example, a multi-stage ejector/mixer, noise can be abated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.