Application of Diagnostic Algorithms for Maintenance Optimization of Marine Gas Turbines

2002 ◽  
Author(s):  
Rolf F. Orsagh ◽  
Gregory J. Kacprzynski ◽  
Michael J. Roemer ◽  
John W. Scharschan ◽  
Daniel E. Caguiat ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
State Of The Art ◽  
Cost Benefit ◽  
Maintenance Optimization ◽  
Turbine Engine ◽  
Modeling And Analysis ◽  
On Line ◽  
Fuel Nozzle ◽  
Compressor Performance

As part of the Naval gas turbine CBM effort, diagnostic and prognostic algorithms that utilize state-of-the-art probabilistic modeling and analysis technologies are being developed and implemented onboard Navy ships. The algorithms under development and testing will enhance gas turbine preventative maintenance in such areas as compressor on-line/crank wash and fuel nozzle replacement. In one application, the prognostic module assesses and predicts compressor performance degradation due to salt ingestion. From this information, the optimum time for on-line water washing or crank washing can be determined from a cost/benefit standpoint. A second application diagnoses the severity of fuel nozzle fouling in real-time during startup. This paper discusses the diagnostic and prognostic modeling approaches to these maintenance issues and their implementation for an Allison 501-K34 gas turbine engine onboard a DDG 51 class guided missile destroyer.

scholarly journals Automation and Electronic Control of Marine Gas Turbine Engine for Ship Revamp

2020 ◽  
Vol 2 (4) ◽  
pp. 98-108
Author(s):  
Filip Niculescu ◽  
Claudia Borzea ◽  
Adrian Savescu ◽  
Andrei Mitru ◽  
Mirela Letitia Vasile
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
State Of The Art ◽  
Weight Ratio ◽  
Electronic System ◽  
Turbine Engines ◽  
Control Panel ◽  
Electronic Control ◽  
Turbine Engine ◽  
Operation Costs

Gas turbines used in propulsion ensure increased efficiency and safety, with a very good power / weight ratio and with low maintenance and operation costs. Due to becoming out-of-date and reaching the maximum operation hours and expected lifetime, which can cause malfunctioning, older turbine engines on frigates need to be replaced with newer generation propulsion engines. The paper presents the replacement of the turbine engine on a defence frigate, focusing on the automation and electronic control solution employed for a propulsion turbine, integrating state-of-the-art techniques. The electronic system ensures control, monitoring and alarm functions, including overspeed protection. A local control panel interfacing the PLC displays the operating parameters and engine controls, also providing maintenance and calibration sequences. The proposed solution enables both the local and the remote control of the ship’s gas turbine.

GSP, a Generic Object-Oriented Gas Turbine Simulation Environment

2000 ◽  
Author(s):  
Wilfried P. J. Visser ◽  
Michael J. Broomhead
Keyword(s):  
Performance Analysis ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Engine Performance ◽  
Object Oriented ◽  
Control Logic ◽  
Turbine Engine ◽  
Industrial Gas Turbines ◽  
On Line ◽  
Turboshaft Engine

NLR’s primary tool for gas turbine engine performance analysis is the ‘Gas turbine Simulation Program’ (GSP), a component based modeling environment. GSP’s flexible object-oriented architecture allows steady-state and transient simulation of any gas turbine configuration using a user-friendly drag&drop interface with on-line help running under Windows95/98/NT. GSP has been used for a variety of applications such as various types of off-design performance analysis, emission calculations, control system design and diagnostics of both aircraft and industrial gas turbines. More advanced applications include analysis of recuperated turboshaft engine performance, lift-fan STOVL propulsion systems, control logic validation and analysis of thermal load calculation for hot section life consumption modeling. In this paper the GSP modeling system and object-oriented architecture are described. Examples of applications for both aircraft and industrial gas turbine performance analysis are presented.

A Prognostic Modeling Approach for Predicting Recurring Maintenance for Shipboard Propulsion Systems

2001 ◽  
Author(s):  
Gregory J. Kacprzynski ◽  
Michael Gumina ◽  
Michael J. Roemer ◽  
Daniel E. Caguiat ◽  
Thomas R. Galie ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Cost Benefit ◽  
Performance Degradation ◽  
Prognostic Models ◽  
Propulsion Systems ◽  
Modeling And Analysis ◽  
Modeling Approach ◽  
Degradation Rates ◽  
Prognostic Modeling

Accurate prognostic models and associated algorithms that are capable of predicting future component failure rates or performance degradation rates for shipboard propulsion systems are critical for optimizing the timing of recurring maintenance actions. As part of the Naval maintenance philosophy on Condition Based Maintenance (CBM), prognostic algorithms are being developed for gas turbine applications that utilize state-of-the-art probabilistic modeling and analysis technologies. Naval Surface Warfare Center, Carderock Division (NSWCCD) Code 9334 has continued interest in investigating methods for implementing CBM algorithms to modify gas turbine preventative maintenance in such areas as internal crank wash, fuel nozzles and lube oil filter replacement. This paper will discuss a prognostic modeling approach developed for the LM2500 and Allison 501-K17 gas turbines based on the combination of probabilistic analysis and fouling test results obtained from NSWCCD in Philadelphia. In this application, the prognostic module is used to assess and predict compressor performance degradation rates due to salt deposit ingestion. From this information, the optimum time for on-line waterwashing or crank washing from a cost/benefit standpoint is determined.

scholarly journals Gas Turbine Compressor Washing State of the Art — Field Experiences

1998 ◽  
Author(s):  
Jean-Pierre Stalder
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Technology Development ◽  
State Of The Art ◽  
Field Tests ◽  
Atmospheric Conditions ◽  
Maintenance Program ◽  
On Line ◽  
Gas Turbine Compressor

Technology development in gas turbine compressor washing over the last 10 years and today’s state of the art technology is presented in this paper. Based on various long term field tests and observations, correlation between rate of power degradation and atmospheric conditions can be established. Questions about compressor on line washing with water alone against the use of detergents, as well as washing frequencies are also addressed in this paper. Performance degradation behavior between gas turbines of different sizes and models can be explained with an index of sensitivity to fouling. The implementation of an optimised regime, of on line and off line washing in the preventive turbine maintenance program is important, it will improve the plant profitability by reducing the costs of energy production and contribute to a cleaner environment.

scholarly journals Expanding Expertise With State-of-the-Art Monitoring

1989 ◽  
Author(s):  
George F. Gramatikas ◽  
Daniel L. Davis
Keyword(s):  
Performance Evaluation ◽  
Gas Turbine ◽  
Health Monitoring ◽  
Gas Turbines ◽  
Performance Enhancement ◽  
State Of The Art ◽  
Plant Performance ◽  
Skilled Personnel ◽  
On Line ◽  
And Performance

This paper describes a program that groups gas turbines from one or more sites for the purpose of efficient monitoring and performance evaluation. Cost-improved gas turbine and power plant operation is achieved by a new, unified-yet-flexible service approach which combines state-of-the-art microprocessor-based monitoring with routine and emergency evaluation by a core of highly skilled personnel many miles from the operating site. This unique approach delivers expertise which supplements the gas turbine owner’s in-house resources. It is based on a modular concept of condition health monitoring and performance evaluation, including scheduled as well as on-line services. Portable condition health monitoring equipment provides the capability for scheduled plant performance evaluation by service engineers without investment in additional equipment. On-line monitoring includes a PC-based software system and a computer link to the service engineer’s headquarters. Both scheduled and on-line monitoring services include trend evaluation, projected maintenance requirements, maintenance planning assistance and suggestions for performance enhancement.

scholarly journals Salt-Water Problems in Marine Gas Turbines

1965 ◽  
Author(s):  
Eugene P. Weinert ◽  
Gilbert A. Carlton
Keyword(s):  
Solid State ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Salt Water ◽  
Gas Turbine Engine ◽  
Operating Conditions ◽  
Sea Salt ◽  
Turbine Engine ◽  
Compressor Performance ◽  
Water Problems

The gas-turbine engine in naval service is subjected to severe operating conditions. By far the most consistent troublemaker is sea salt. In either liquid or solid state, sea salt causes problems in corrosion of hot and cold surfaces, fouling of fuel systems, and deterioration of compressor performance. Such problems are reviewed and solutions discussed.

Gas Turbine Compressor Washing State of the Art: Field Experiences1

2000 ◽  
Vol 123 (2) ◽  
pp. 363-370 ◽  
Author(s):  
J.-P. Stalder
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Technology Development ◽  
State Of The Art ◽  
Field Tests ◽  
Atmospheric Conditions ◽  
Maintenance Program ◽  
On Line ◽  
Gas Turbine Compressor

Technology development in gas turbine compressor washing over the last 10 years and today’s state of the art technology is presented in this paper. Based on various long term field tests and observations, correlation between rate of power degradation and atmospheric conditions can be established. Questions about compressor on line washing with water alone against the use of detergents, as well as washing frequencies are also addressed in this paper. Performance degradation behavior between gas turbines of different sizes and models can be explained with an index of sensitivity to fouling. The implementation of an optimized regime of on line and off line washing in the preventive turbine maintenance program is important. It will improve the plant profitability by reducing the costs of energy production and contribute to a cleaner environment.

Design, Development and Application of Vehicle Gas Turbine Engines

1966 ◽  
Vol 181 (1) ◽  
pp. 149-172
Author(s):  
P. A. Phillips ◽  
Peter Spear
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Low Cost ◽  
Engine Performance ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Design Development ◽  
Turbine Engine ◽  
Wide Range ◽  
Cycle Temperature

After briefly summarizing worldwide automotive gas turbine activity, the paper analyses the power plant requirements of a wide range of vehicle applications in order to formulate the design criteria for acceptable vehicle gas turbines. Ample data are available on the thermodynamic merits of various gas turbine cycles; however, the low cost of its piston engine competitor tends to eliminate all but the simplest cycles from vehicle gas turbine considerations. In order to improve the part load fuel economy, some complexity is inevitable, but this is limited to the addition of a glass ceramic regenerator in the 150 b.h.p. engine which is described in some detail. The alternative further complications necessary to achieve satisfactory vehicle response at various power/weight ratios are examined. Further improvement in engine performance will come by increasing the maximum cycle temperature. This can be achieved at lower cost by the extension of the use of ceramics. The paper is intended to stimulate the design application of the gas turbine engine.

Future Vehicular Recuperator Technology Projections

1994 ◽  
Author(s):  
Robert A. Wilson ◽  
Daniel B. Kupratis ◽  
Satyanarayana Kodali
Keyword(s):  
Gas Turbine ◽  
Fuel Economy ◽  
Department Of Defense ◽  
Gas Turbines ◽  
High Performance ◽  
Development Program ◽  
Turn Of The Century ◽  
Turbine Engine ◽  
Technology Roadmap ◽  
Vehicle Propulsion

The Department of Defense and NASA have funded a major gas turbine development program, Integrated High Performance Turbine Engine Technology (IHPTET), to double the power density and fuel economy of gas turbines by the turn of the century. Seven major US gas turbine developers participated in this program. While the focus of IHPTET activity has been aircraft propulsion, the same underlying technology can be applied to water craft and terrestrial vehicle propulsion applications, such as the future main battle tank. For these applications, the gas turbines must be equipped with recuperators. Currently, there is no technology roadmap or set of goals to guide industry and government in the development of a next generation recuperator for such applications.

scholarly journals Clear Skies Ahead

2016 ◽  
Vol 138 (06) ◽  
pp. 38-43
Author(s):  
Lee S. Langston
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Electrical Power ◽  
Vital Role ◽  
Medium Size ◽  
Steady Increase ◽  
Innovative Design ◽  
Turbine Engine ◽  
Boom And Bust

This article discusses various fields where gas turbines can play a vital role. Building engines for commercial jetliners is the largest market segment for the gas turbine industry; however, it is far from being the only one. One 2015 military gas turbine program of note was the announcement of an U.S. Air Force competition for an innovative design of a small turbine engine, suitable for a medium-size drone aircraft. The electrical power gas turbine market experienced a sharp boom and bust from 2000 to 2002 because of the deregulation of many electric utilities. Since then, however, the electric power gas turbine market has shown a steady increase, right up to present times. Coal-fired plants now supply less than 5 percent of the electrical load, having been largely replaced by new natural gas-fired gas turbine power plants. Working in tandem with renewable energy power facilities, the new fleet of gas turbines is expected to provide reliable, on-demand electrical power at a reasonable cost.

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