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Steam Turbine Power Plant: Operation, Maintenance, and Control

Introduction

In this course, you will be learning the basic types of turbines and more information concerning turbine construction. A general overview of the turbine and its component operating principles will be presented.

Also, provides the participants with a thorough understanding of the design and construction of Steam Turbine, and improve their capabilities and skills in operating, maintaining and control Steam turbine in their plants through discussion the operation procedures and maintenance practices necessary to keep them operating efficiently and safely.

WHO SHOULD ATTEND?

This course is recommended for Engineers, and qualified technicians, whose work related to operate and maintain of Steam Plant.

COURSE OUTLINE

Basic Steam Theory

• Steam Uses
• Steam Pressure
• Water Vapor and Steam

Steam Heat

• Sensible Heat of Steam
• Latent Heat of Steam
• Total Heat of Steam

Energy

• Mechanical Energy
• Potential Energy
• Kinetic Energy
• Electrical Energy

Steam Turbine Components:

Steam Turbine Theory

• Impulse Principle
• Reaction Principle

Steam Flow Through the Turbine

• Axial Flow
• Radial Flow

Turbine Classification

• According to Steam Pressure
• According to Physical Arrangement
• According to Reheat Steam
• According to Steam Flow
• According to Condensing /Non-Condensing

Turbine Cylinders

• Arrangement of Cylinders
• Cylinder Joints
• Double Shell H.P Casing
•  L.P. Cylinder and Exhaust
• Rupture Disks (Relief Diaphragms)
• Turbine Expansion and Constriction

Turbine Rotor

•  Drum Rotor
•  Disc Rotor
• Solid Forged Rotor
• Welded Rotor
• Turbine Blades
•  Impulse Type Blading
•  Reaction Type Blading
• Blades Sealing

Dummy Pistons

• Reason for using Dummy Pistons
• Balancing the Thrust (Balancing Line)

Steam Turbine Accessories:

• Bearnings
• Journal Bearing
• Thrust Bearing

Lubrication System

• Lube Oil Reservoir
• Lube Oil Pumps

Couplings

• Flexible Coupling
• Solid Coupling

Shaft Gland Seal

• Carbon Gland Seal
• Labyrinth Gland Seal
• Water Gland Seal

Gland Exhaust System

• Gland Steam Condenser
• Gland Exhaust Blower

Barring Gear (Turning Gear)

• Arrangement of Barring Gear
• Jacking Pump

Other Support Parts

• Cross Over
• Turbine Anchor
• Vacuum Breaker
• Turbine Extraction Points
• Exhaust Hood Cooling System
• Turbine Steam Drains

Steam Turbine Valves And Controls

Turbine Valves

• Main Stop Valves
• Control Valves
• Main Stop and Control Valves during Startup
• Reheat Stop and Intercept Valves

Turbine Controls

• Turbine Control Valves
• Hydraulic Actuators and Pilot Valves
• Mechanical Governors
• Hydraulic Governors
• Electronic Governors
• Speed Changers

Turbine Instrumentation

• Vibration Monitoring
• Expansion and Contraction Monitoring
• Eccentricity
• Speed Monitoring

Turbine Protections

• Turbine Trips
• Overspeed Mechanisms
• Manual Trips
• Testing Overspeed Mechanisms
• Lubricating Oil Protection System
• Thrust Bearing Protection System
• Low Vacuum Protection System
• High Vibration Protection System
• 9 Solenoid Trip Mechanisms

Steam turbine operation

• introduction
• Prepartions For Steam Flow
• Turbine Lubricating System
• Starting and Engaging the Turning Gear
• Opening Turbine Drains and Sounding out the Turbine
• Sealing and Pulling Vacuum
• Resetting the Turbine Steam Valves

Temperature And Speed Increases

• Warming up a Turbine
• Conditions Monitored During Turbine Warm up
• Brining a Turbine up to Speed
• Operator Responsibilities During Speed Raising Process

Load Changes And The Transfer Point

• Increasing Load
• Transferring Control from the S. Valve Bypass to Ctrl Valves

Turbine Under Load

• Important Lubricating Oil Temperature
• Low Condenser Vacuum
• Water Induction

Turbine Shutdown

• Shutting Down a Turbine for Maintenance
• Other Shutdown Conditions

Steam Turbine Maintenance

Turbine Overhaul

• Frequency of Overhaul
• Regular Serving

Maintenance Planning

• Turbine Overhaul Programs
• At National Level
• At Regional Level
• At The generating Station
• Advance Planning

Turbine Annual Maintenance

• Inspection of Bearings
• Oil Clearance
• Thrust Bearing Inspection
• Shaft Alignment
• Steam Control and Emergency Valves

Turbine Major Overhauls

• Inspection and Planning
• Casing Fastenings
• Running Clearance
• Rotor Removal
• Inspection of Other Equipment
• Radial Clearance
• Replacement of Rotors