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Gas Turbine Intake Systems-High Velocity Filtration for Marine Gas Turbine Installations

[+] Author Affiliations
R. K. Mudge

Ships Support Agency, Bath

S. D. Hiner

Altair Filter Technology Ltd, Alton, Hampshire

Paper No. 2001-GT-0584, pp. V001T02A009; 8 pages
doi:10.1115/2001-GT-0584
From:
  • ASME Turbo Expo 2001: Power for Land, Sea, and Air
  • Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery
  • New Orleans, Louisiana, USA, June 4–7, 2001
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7850-7
  • Copyright © 2001 by ASME

abstract

The Royal Navy (RN) has operated marinised industrial and aero-derivative propulsion gas turbines since the late 1940’s. In order to safeguard the gas turbines (principally from foreign object damage (FOD) and salt ingestion) the RN places a high degree of importance on the gas turbine intake system, a principal element within which is the intake filtration equipment.

Since the introduction of marine gas turbines the RN have witnessed and participated in the development of intake filtration systems from knitmesh filters to highly efficient 3 stage (vane- coalescer-vane) separators (spray eliminators).

The requirements for RN gas turbine intake systems are described in Naval Engineering Standard (NES 312), and have been brought about by long standing operational experience of these systems and commercial best practice.

This paper will briefly outline the RN design criteria for gas turbine intake systems and how this has been modified by field experience. It will then go on to look at intake separators, giving their design criteria and describe from inception, a study into the possible adoption of next generation high velocity spray eliminators describing initial specification, the product design process and development testing. The potential benefits afforded by such a high velocity system will also be discussed.

In addition the paper will describe the initial fit of a trial unit onto HMS Coventry, for back to back testing with a unit of conventional design.

It is intended to present Part 2 of this paper at ASME 2002 Amsterdam, which will contain a précis of the design, presentation of the data from the sea trial and the results and conclusions from the engine inspections, including an assessment by Rolls Royce the engine Design Authority.

At this time the sutability of the equipment for the intakes of the WR21 will be considered.

Copyright © 2001 by ASME

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