CM 939 Weldable® Alloy Update

2007 ◽  
Author(s):  
Jacqueline B. Wahl ◽  
Ken Harris
Keyword(s):  
Gas Turbine ◽  
Engine Performance ◽  
Filler Wire ◽  
Vacuum Casting ◽  
Ultra High Purity ◽  
Production Experience ◽  
Turbine Vane ◽  
Weldable Alloy ◽  
Industrial Gas Turbine ◽  
Application Programs

Cannon-Muskegon has developed a proprietary chemistry modified version of IN 939 designated CM 939 Weldable®. As presented in 2004, emphasis was placed on optimizing aim chemistry, utilizing Cannon-Muskegon ultra high purity manufacture technology, and obtaining superior casting microstructure for improved weldability and mechanical properties. This paper will review the unique properties that make this alloy desirable, with particular attention to production experience and ongoing developments. Significant market interest has resulted in extensive vacuum casting experience throughout the gas turbine industry. In the 2–3 years since introduction, CM 939 Weldable alloy has accumulated substantial engine performance experience in industrial gas turbine vane applications. New application programs, including vane rings and turbine containment ring components, advances in weldability using CM 939 Weldable filler wire and special application alloy modifications (DT1 & DT2) will also be presented.

scholarly journals Study on the Turbine Vane and Blade for a 1500°C Class Industrial Gas Turbine

1993 ◽  
Author(s):  
S. Amagasa ◽  
K. Shimomura ◽  
M. Kadowaki ◽  
K. Takeishi ◽  
H. Kawai ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Film Cooling ◽  
High Efficiency ◽  
Development Program ◽  
Test Results ◽  
Directionally Solidified ◽  
Barrier Coating ◽  
Turbine Vane ◽  
Nickel Base ◽  
Industrial Gas Turbine

This paper describes the summary of a three year development program for the 1st stage stationary vane and rotating blade for the next generation, 1500°C Class, high efficiency gas turbine. In such a high temperature gas turbine, the 1st turbine vane and blade are the most important hot parts. Full coverage film cooling (FCFC) is adopted for the cooling scheme, and directionally solidified (DS) nickel base super-alloy and thermal barrier coating (TBC) will be used to prolong the creep and thermal fatigue life. The concept of the cooling configuration, fundamental cascade test results and material test results will be presented.

Performance Deterioration in Industrial Gas Turbines

1992 ◽  
Vol 114 (2) ◽  
pp. 161-168 ◽  
Author(s):  
I. S. Diakunchak
Keyword(s):  
Gas Turbine ◽  
Service Time ◽  
Gas Turbines ◽  
Engine Performance ◽  
Turbine Engine ◽  
Factors Affecting ◽  
Preventative Measures ◽  
Industrial Gas Turbines ◽  
Performance Deterioration ◽  
Industrial Gas Turbine

This paper describes the most important factors affecting the industrial gas turbine engine performance deterioration with service time and provides some approximate data on the prediction of the rate of deterioration. Recommendations are made on how to detect and monitor the performance deterioration. Preventative measures, which can be taken to avoid or retard the performance deterioration, are described in some detail.

Performance Deterioration in Industrial Gas Turbines

1991 ◽  
Author(s):  
Ihor S. Diakunchak
Keyword(s):  
Gas Turbine ◽  
Service Time ◽  
Gas Turbines ◽  
Engine Performance ◽  
Turbine Engine ◽  
Factors Affecting ◽  
Preventative Measures ◽  
Industrial Gas Turbines ◽  
Performance Deterioration ◽  
Industrial Gas Turbine

This paper describes the most important factors affecting the industrial gas turbine engine performance deterioration with service time and provides some approximate data on the prediction of the rate of deterioration. Recommendations are made on how to detect and monitor the performance deterioration. Preventative measures, which can be taken to avoid or retard the performance deterioration, are described in some detail.

Effects of Anti-Icing System Operation on Gas Turbine Performance and Monitoring

2001 ◽  
Author(s):  
K. Mathioudakis ◽  
A. Tsalavoutas
Keyword(s):  
Gas Turbine ◽  
Engine Performance ◽  
Performance Model ◽  
False Alarms ◽  
System Operation ◽  
Diagnostic Ability ◽  
Engine Model ◽  
On Line ◽  
Industrial Gas Turbine ◽  
Engine Condition

The effect of operation of compressor bleed anti-icing on the performance of an industrial gas turbine is analysed. The effect of putting this system in operation is first qualitatively discussed, while the changes on various performance parameters are derived by using a computer engine performance model. The main point of the paper is the study of the effect of anti-icing system operation on parameters used for engine condition monitoring. It is shown that operation of the anti-icing system causes an apparent modification of such parameters, which may reduce the diagnostic ability of an on-line monitoring system and produce false alarms. It is shown that by incorporating the effect of anti-icing system operation into a diagnostic engine model, such problems can be avoided and the diagnostic ability of the system is not influenced by anti-icing activation. The analysis presented is substantiated through experimental data from a twin shaft gas turbine operating in the field.

The Design and Test of Air-Cooled Blading for an Industrial Gas Turbine

1982 ◽  
Author(s):  
J. M. Hannis ◽  
M. K. D. Smith
Keyword(s):  
Gas Turbine ◽  
Engine Performance ◽  
Turbine Stage ◽  
High Pressure Turbine ◽  
Transient Conditions ◽  
Blade Cooling ◽  
Advance Information ◽  
Industrial Gas Turbine ◽  
Design And Testing ◽  
A Current

The design and testing of a cooled high pressure turbine stage to provide advance information for the Ruston Tornado 6MW industrial gas turbine is described. The cooled stage was designed to replace an existing uncooled stage in a current Ruston gas turbine to allow development testing under actual engine conditions. The instrumentation techniques used on the development engine, including infrared pyrometry, are discussed and results of the tests covering nozzle vane and rotor blade cooling under steady state and transient conditions and engine performance are presented and compared with the design predictions.

Application of Adaptive GPA to an Industrial Gas Turbine Using Field Data

2019 ◽  
Author(s):  
Ericcson Ramadhan ◽  
Yi-Guang Li ◽  
Deplian Maherdianta
Keyword(s):  
Performance Management ◽  
Gas Turbine ◽  
Performance Status ◽  
Engine Performance ◽  
Health Condition ◽  
Diagnostic Process ◽  
Component Level ◽  
Turbine Component ◽  
The Difference ◽  
Industrial Gas Turbine

Abstract The gas turbine inspection activities provided by the manufacturers and user maintenance scheme may be different from each other. To accommodate the difference, performing engine diagnostic as a condition-based monitoring technique is necessary to support Asset Performance Management (APM) adopted by the gas turbine users to improve the scheme. This paper provides an application of a novel Adaptive Gas Path Analysis (Adaptive GPA) to diagnose performance and health condition of a GE industrial gas turbine MS5001PA operated by PT Pupuk Kaltim (PKT). In the application, an engine thermodynamic model is constructed, adapted, and validated on the actual engine performance based on its gas path measurements. To estimate the health condition from the degraded engine data, two steps are applied in the Adaptive GPA diagnostic process. The first step is the estimation of degraded engine performance status and the second step is the prediction of engine health status at the gas turbine component level. Adaptive GPA results show that satisfactory predictions of the engine degradation have been achieved. In other words, the compressor has been predicted 5.56% degradation in flow capacity and 4.26% degradation in efficiency respectively, which is an indication of compressor fouling. Combining the diagnostic results, manufacturer’s recommendations, and user maintenance strategy, it is relatively safe and allowable to increase the maintenance inspection interval from 12,000 to 16,000 hours. Therefore, the adaptive GPA is proven to be beneficial to support condition-based maintenance decisions.

Refitting of Exhaust Diffuser of Industrial Gas Turbine

2008 ◽  
Author(s):  
Vladimir Vassiliev ◽  
Matthias Rothbrust ◽  
Stefan Irmisch
Keyword(s):  
Mach Number ◽  
Gas Turbine ◽  
Mass Flow ◽  
Power Output ◽  
Engine Performance ◽  
Aerodynamic Optimization ◽  
Expansion Turbine ◽  
Higher Power ◽  
Industrial Gas Turbine

This paper describes the aerodynamic optimization of the GT26 exhaust diffuser. The need for optimization was triggered by an upgrade of the compressor, resulting in a higher mass flow and a higher power output. The expansion turbine remained unchanged. However, the increase in mass flow had a significant impact on the Mach number. Secondly, the residual swirl at the turbine outlet, and therefore, the exhaust loss in original diffuser would have increased. The re-optimization of diffuser allowed minimization of the losses and improvement of the overall engine performance.

scholarly journals Impact of Fuel Composition on Gas Turbine Engine Performance

2019 ◽  
Vol 141 (10) ◽  
Author(s):  
Dan Burnes ◽  
Alejandro Camou
Keyword(s):  
Gas Turbine ◽  
Carbon Emissions ◽  
Fossil Fuels ◽  
Engine Performance ◽  
Fuel Composition ◽  
Turbine Engine ◽  
Auto Ignition ◽  
Higher Power ◽  
Output Characteristics ◽  
Industrial Gas Turbine

An industrial gas turbine can run on a wide variety of fuels to produce power. Depending on the fuel composition and resulting properties, specifically the hydrogen–carbon ratio, the available output power, operability, and emissions of the engine can vary significantly. This study is an examination of how different fuels can affect the output characteristics of Solar Turbines Incorporated industrial engines and highlights the benefits of using fuels with higher hydrogen–carbon ratios including higher power, higher efficiency, and lower carbon emissions. This study also highlights critical combustion operability issues that need to be considered such as auto-ignition, flashback, blowout, and combustion instabilities that become more prominent when varying the hydrogen–carbon ratio significantly. Our intent is to provide a clear and concise reference to edify the reader examining attributes of fuels with different properties and how natural gas is superior to other fossil fuels with lower hydrogen carbon ratios in terms of carbon emissions, power, and efficiency.

scholarly journals Fully Loaded Factory Test of the CW251B12 Gas Turbine Engine

1990 ◽  
Author(s):  
Ihor S. Diakunchak
Keyword(s):  
Gas Turbine ◽  
Test Data ◽  
Performance Test ◽  
Engine Performance ◽  
Test Facility ◽  
Test Results ◽  
Turbine Engine ◽  
Engine Model ◽  
Factory Test ◽  
Industrial Gas Turbine

The fully loaded factory test of the CW251B12 45 MW class industrial gas turbine is described in this paper. This gas turbine is the latest uprating of the W251 series of engines. The main objectives of the factory test were the verification of the performance and the mechanical integrity of the new engine model. A brief description of the main features of the engine, the application of the first unit, the test facility, and the engine instrumentation used in the test is included. Details of the engine performance test results, telemetry test data results, and the hot end component metal temperature measurements are provided.

Impact of Fuel Composition on Gas Turbine Engine Performance

2019 ◽  
Author(s):  
Dan Burnes ◽  
Alejandro Camou
Keyword(s):  
Gas Turbine ◽  
Carbon Emissions ◽  
Fossil Fuels ◽  
Engine Performance ◽  
Fuel Composition ◽  
Turbine Engine ◽  
Higher Power ◽  
Output Characteristics ◽  
Industrial Gas Turbine ◽  
Critical Combustion

Abstract An industrial gas turbine can run on a wide variety of fuels to produce power. Depending on the fuel composition and resulting properties, specifically the hydrogen-carbon ratio, the available output power, operability, and emissions of the engine can vary significantly. This study is an examination of how different fuels can affect the output characteristics of Solar Turbines Incorporated industrial engines, and highlights the benefits of using fuels with higher hydrogen-carbon ratios including higher power, higher efficiency, and lower carbon emissions. This study also highlights critical combustion operability issues that need to be considered such as autoignition, flashback, blowout and combustion instabilities that become more prominent when varying the hydrogen-carbon ratio significantly. Our intent is to provide a clear and concise reference to edify the reader examining attributes of fuels with different properties and how natural gas is superior to other fossil fuels with lower hydrogen carbon ratios in terms of carbon emissions, power, and efficiency.

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