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Overview
The aim of this training course is to provide engineers with a better understanding of the steam and gas turbines and help them find new, more accurate and cost-saving technical solutions to successfully perform
axial turbine design and operation tasks.
This course will familiarize attendees with the basics of steam and gas turbine design, starting from a theoretical overview of turbine thermodynamics, gas dynamics and structural analysis, and ending with typical examples to implement the suggested procedures. The program includes
Axial Turbine Fundamentals
course supported by numerous examples and more intensive study of turbine design: thus, each training section contains exercises to ensure the information is learnt well and can be effectively applied to engineering challenges.
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The scope includes:
- Steam and gas turbine designs. Fundamental turbine stage parameters
- Initial turbine sizing. Multistage turbines
- Turbine optimization and detailed design
- Profiling
- Blade design
- Tertiary components
- Turbine retrofitting
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Who Should Attend
- Engineers aspiring to deepen their understanding of the steam and gas turbine essentials to improve the overall design practice.
- Design and development engineers of power plants with project and product responsibility.
- Technical Managers seeking to improve or expand the product range by incorporating innovative engineering solutions into the turbomachinery design process.
- Academics who are teaching turbomachinery design and need specialized course and reference material based on the latest engineering findings.
SoftInWay provides one month AxSTREAM software license for all course attendees to continue turbomachinery education after finishing of the training program.
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Examples of Course Schedule and Contents
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1. Steam and gas turbine designs. Fundamental turbine stage parameters.
Introduction to turbine gas dynamics. Working fluid properties. Basic steam and gas turbine design layouts and cycles consideration. Turbine stage and cascade: definitions, dimensions. Transformation of energy through turbine stage: impulse and reaction turbines, velocity triangles, stage dimensionless parameters, Rateau and Curtis stages.
Practical exercises:
- Gas dynamics calculations;
- Steam and gas properties definition;
- Cycle calculations.
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2. Initial turbine sizing. Multistage turbines.
Preliminary design: selection of optimal number of stages and diameters. Design with inverse task. Turbine efficiency and energy losses. Main challenges in design process.
Practical exercises:
- Turbine stage detailed calculation;
- Turbine stage design and optimization;
- Multistage turbine design.
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3. Turbine optimization and detailed design
Direct task: meanline (1D) turbine calculation, streamline (2D) calculation, distributions of parameters spanwise, cylindrical and twisted blades: effects on turbine performance, mechanical and thermodynamic design. Optimization methods, principles and processes. Off-design turbine performance prediction, turbine operating modes. Turbine start-up and shutdown.
Practical exercises:
- Stage twist law selection and optimization;
- Design of experiment applications in turbomachinery optimization;
- Steam turbine off-design modes calculation;
- Gas turbine off-design performances calculation and matching.
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4. Profiling
Boundary layer. Laminar and turbulent flow modes. Potential flow in blade-to-blade channel. Basic profiling knowledge, Pritchard profiling model. Subsonic and supersonic profiles, deviation angle.
Practical exercises:
- Turbine cascade profiling.
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5. Blade design
3D blade design: cylindrical and twisted blades. Special blade design effects: lean, sweep. Structural analysis. Elements of rotor and stator: shrouds, diaphragms etc. Cooled blades design and schemes.
Practical exercises:
- Design of twisted, leaned and swept blades;
- Blades and nozzles structural analysis.
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6. Tertiary components
Diaphragms and rotors design. Sealing systems. Steam admission types. Working fluid extractions and additions. Moisture separation and extraction, wet steam turbine special features.
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7. Turbine retrofitting
Flow path elements deterioration. Selection of overhaul intervals. Turbine redesign, retrofitting and rerate tasks and methods.
Practical exercises:
- Turbine rerate design adjustment calculations;
- Evaluating different retrofitting options for small steam turbine.
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8. Summary and discussions
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The tools used: Mollier diagram, scientific calculator, AxSTREAM.
*Please note that the course schedule is not fixed and could be customized following the specific attendees’ requirements and needs.
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Locations and Dates for 2013
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