Marine Gas Turbine Condition Monitoring by Gas Path Electrostatic Detection Techniques

1991 ◽  
Author(s):  
R. A. Cartwright ◽  
C. Fisher
Keyword(s):  
Gas Turbine ◽  
Monitoring System ◽  
Condition Monitoring ◽  
Joint Research ◽  
Detection Techniques ◽  
Debris Particles ◽  
On Line ◽  
Path Condition ◽  
Condition Monitoring System ◽  
And Performance

It was discovered in 1970 that certain gas turbine failures are preceded by an increase in electrostatic activity in the exhaust gases. Joint research by the Royal Aerospace Establishment and Stewart Hughes Limited demonstrated that this characteristic could be used to provide an on-line monitor of the precursors to these failures. An extension of the research applied the theory to the detection of foreign objects ingested into engine inlets. The characteristics and performance of both the Ingested Debris Monitoring System (IDMS) and Engine Distress Monitoring System (EDMS) were examined during a recent 2000 hours endurance trial of a Rolls-Royce Marine Spey gas turbine. The EDMS produced clear evidence of the minor combustor degradation that occurred steadily throughout the trial and also reflected the absence of other engine damage. IDMS data showed that few significant debris particles passed through the engine. Video endoscope and visual inspection confirmed these results. Debris seeding trials further explored the capability of the IDMS to identify the damaging nature of debris and to assess the EDMS signature of consequential engine damage. The paper concludes that electrostatic monitoring at engine inlet and exhaust can identify the ingestion of debris, consequential engine damage and the onset of unexpected distresses caused by blade rubs or combustor degradation. The technique shows potential to provide early warning of certain types of engine damage to Engineer Officers at sea and development into a rugged gas path condition monitoring system continues.

Trends™: An Automatic Gas Turbine Diagnostic System

1975 ◽  
Author(s):  
J. R. Passalacqua
Keyword(s):  
Gas Turbine ◽  
Monitoring System ◽  
Condition Monitoring ◽  
Diagnostic System ◽  
Data Systems ◽  
Standard Field ◽  
Military Aviation ◽  
Condition Monitoring System ◽  
And Performance ◽  
Engine Condition

This paper describes the development, operation and performance of an automatic engine condition monitoring system by Hamilton Standard Division of United Aircraft. This development is a direct outgrowth of Airborne Integrated Data Systems (AIDS), which have been developed for commercial and military aviation. Application of this technology to an installation at Hartford Electric Light Company’s South Meadow facility led to the development of the system currently being installed at several major utilities and marketed by Hamilton Standard. Field results of the HELCO testing are presented herein. As current installation information becomes available it will be made available to industry.

Parametric Modeling of Exhaust Gas Emission From Natural Gas Fired Gas Turbines

1996 ◽  
Vol 118 (3) ◽  
pp. 553-560 ◽  
Author(s):  
L. E. Bakken ◽  
L. Skogly
Keyword(s):  
Air Pollution ◽  
Gas Turbine ◽  
Monitoring System ◽  
Condition Monitoring ◽  
Gas Turbines ◽  
Nox Emissions ◽  
Exhaust Gas ◽  
On Line ◽  
Condition Monitoring System ◽  
Line Condition

Increased focus on air pollution from gas turbines in the Norwegian sector of the North Sea has resulted in taxes on CO2. Statements made by the Norwegian authorities imply regulations and/or taxes on NOx emissions in the near future. The existing CO2 tax of NOK 0.82/Sm3 (US Dollars 0.12/Sm3) and possible future tax on NOx are analyzed mainly with respect to operating and maintenance costs for the gas turbine. Depending on actual tax levels, the machine should be operated on full load/optimum thermal efficiency or part load to reduce specific exhaust emissions. Based on field measurements, exhaust emissions (CO2, CO, NOx, N20, UHC, etc.) are established with respect to load and gas turbine performance, including performance degradation. Different NOx emission correlations are analyzed based on test results, and a proposed prediction model presented. The impact of machinery performance degradation on emission levels is particularly analyzed. Good agreement is achieved between measured and predicted NOx emissions from the proposed correlation. To achieve continuous exhaust emission control, the proposed NOx model is implemented to the on-line condition monitoring system on the Sleipner A platform, rather than introducing sensitive emission sensors in the exhaust gas stack. The on-line condition monitoring system forms an important tool in detecting machinery condition/degradation and air pollution, and achieving optimum energy conservation.

Parametric Modelling of Exhaust Gas Emission From Natural Gas Fired Gas Turbines

1995 ◽  
Author(s):  
L. E. Bakken ◽  
L. Skogly
Keyword(s):  
Air Pollution ◽  
Gas Turbine ◽  
Monitoring System ◽  
Condition Monitoring ◽  
Gas Turbines ◽  
Nox Emissions ◽  
Exhaust Gas ◽  
On Line ◽  
Condition Monitoring System ◽  
Line Condition

Increased focus on air pollution from gas turbines in the Norwegian sector of the North Sea has resulted in taxes on CO2. Statements made by the Norwegian authorities imply regulations and/or taxes on NOx emissions in the near future. The existing CO2-tax of NOK 0.82 /Sm3 (US Dollars 0.12/Sm3) and possible future tax on NOx are analysed mainly with respect to operating and maintenance costs for the gas turbine. Depending on actual tax levels, the machine should preferably be operated on full load/optimum thermal efficiency or part load to reduce specific exhaust emissions. Based on field measurements, exhaust emissions (CO2, CO, NOx, N2O, UHC etc.) are established with respect to load and gas turbine performance, including performance degradation. Different NOx emission correlations are analysed based on test results, and a proposed prediction model presented. The impact of machinery performance degradation on emission levels is particularly analysed. Good agreement is achieved between measured and predicted NOx emissions from the proposed correlation. To achieve continuous exhaust emission control, the proposed NOx model is implemented to the on-line condition monitoring system on the Sleipner A platform, rather than introducing sensitive emission sensors in the exhaust gas stack. The on-line condition monitoring system forms an important tool in detecting machinery condition/degradation, air pollution and achieving optimum energy conservation.

On-Line Oil Condition Monitoring System

2013 ◽  
Vol 475-476 ◽  
pp. 7-11 ◽  
Author(s):  
Xin Yuan Liang
Keyword(s):  
Monitoring System ◽  
Condition Monitoring ◽  
Basic Research ◽  
Lubricating Oil ◽  
Oil Condition Monitoring ◽  
Computer Image Processing ◽  
On Line ◽  
Condition Monitoring System ◽  
New Research ◽  
Oil Monitoring

An on-line monitoring system was proposed to monitor lubrication oil real-time condition. Oil is the machine equipment blood, and its condition has very serious influence on machine running. Firstly, this paper expiated the research significance of on-line oil monitoring. Then the key problem of on-line oil monitoring was discussed and its goal was analyzed. Furthermore, basic research content and research thread were put forward. Based on the modern photoelectric detection, microscopic imaging and computer image processing technology, an on-line acquisition system of lubricating oil particle image was proposed. This work provides a new research idea for on-line monitoring system which is important to develop the technology of oil condition monitoring.

A Gas Turbine Condition-Monitoring System

1995 ◽  
Vol 107 (6) ◽  
pp. 23-33 ◽  
Author(s):  
James R. Hardin ◽  
Ivan L. Howell ◽  
J. Richard Mirilovich ◽  
John J. Hartranft ◽  
David L. Schreder
Keyword(s):  
Gas Turbine ◽  
Monitoring System ◽  
Condition Monitoring ◽  
Condition Monitoring System

The Development of a Machinery Condition Monitoring System for Gas Transmission

1989 ◽  
Author(s):  
Thomas Van Hardeveld
Keyword(s):  
Monitoring System ◽  
Condition Monitoring ◽  
Data Interpretation ◽  
Diagnostic Techniques ◽  
Line System ◽  
Machinery Condition Monitoring ◽  
Gas Compression ◽  
On Line ◽  
Maintenance Techniques ◽  
Condition Monitoring System

Over the past few years, there has been accelerated development in predictive maintenance techniques such as condition monitoring. This paper describes the development of a condition monitoring system which monitors gas compression equipment for a major gas transmission company. A stand-alone system, featuring a data collector and PC-based software, was implemented first to allow for medium to longer-term trending. Subsequently, an on-line system has been developed to facilitate automatic acquisition of data and enhanced monitoring capabilities. Various diagnostic techniques have been included in both the stand-alone and on-line systems to aid in data interpretation and analysis.

Sign in / Sign up

Export Citation Format

Share Document