Steam Power Planing
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Transcript of Steam Power Planing
Steam power plant
Steam boiler
1-Basic Boiler Construction Header2-Front fired studded wall refractory covered boiler 3-Roof fired membrane wall modern Radiant heat boiler4-Components *-Steam drum *- Water drum *-Headers *-Generating tubes
-*Screen tubes *-Water wall tubes *-Down comers *-Riser/Return tubes *-Superheated tubes *-Superheated support tubes 5-Material requirements 6-Advantages of membrane/monowalls 7-Advantages of roof firing over side firing
8-Ligament Cracking Mechanics
9-Smoke tube Boilers *-Tank (scotch) Boiler *-Design *-Modern (packaged) boiler *-Operation *-Authors Note 10-Dual Pressure (double evaporation) Boilers *-Secondary drum *-Typical circuit incorporating
Dual Pressure Boiler
11-Advantages and disadvantages of water tube boilers 12-Marine Radiant Reheat Boilers 13-Steam-Steam Generators-14-Superheaters *-Reason for superheating steam -Limit of Superheat -Positioning of the superheated -Integral (FW D-type) -External (FW ESD III)
-*Designs of Superheater banks and ---
mounting arrangements - U-TubesExternal (melesco type -
*-Methods of attachment - Expanded
- Welded
15-Air Heaters *-Reasons for their use *-Types of air heaters - Lungstrom gas/air heater (regenerative -
Tubular gas/air heater
-Bled steam air heater
16-Burners *-Combustion of fuel in furnace and burner design -Process
-Combustion in furnace space -Types -Pressure jet
-Spill type pressure jet - Variable orifice pressure jet - Steam assisted - Steam atomisation
- Ultrasonic -Spinning Cup -Blue Flame
17-Refractories *-Purpose *-Properties *-Types *-Forms *-Furnace linings - Studded tubes *-PRESENT DAY TYPES -TANGENT WALL.
- MembFurnace floors -rane wall - Front walls -Burner openings -Brick bolts
*-Refractory failure -SPALLING -SLAGGING
-SHRINKAGE CRACKING 18-SAFETY VALVES *-LIFT PRESSURE *-10% ACCUMULATION OF PRESSURE RULE
-*BLOWDOWN *-SETTING *-Improved high lift safety valve *-Materials *-Full lift safety valve19-Gauge glasses *-General *- Low pressure boilers( up to 17.5 bar) *-Tubular gauge glass *-Medium pressure boilers
*-High pressure boilers *-General gauge glass faults *-Bi-color gauges *-Igema remote reading indicator
Boiler feed pumps
1-Boiler feed pumps 2-Balancing of two stage pumps 3-Bearings 4-Flow characteristics of 5-controlled feed pumps 6- Gland 7- Contents
-*Introduction *-General Components*-Working Mechanism *- Definition of Important Terms *- Understanding Performance Curves *-Troubleshooting References
Condensors
1-BASIC FUNCTION *-1,Only latent heat should be removed as this increases thermal efficiency *- 3, Air must be removed from the condenser
2-DESIGN 3-PROTECTION OF CONDENSERS4-Marine growth prevention
5-Erosion protection 6-CONDENSER CLEANING 7-Leakage8-Regenerative condensers 9-Material of tubes *-Tube fitting *-Stays10-Advantages of the different designs of condenser *-Underslung
-*Axial plane( radial flow ) 11-Scoop systems
*-Scoop System layout
Economizer part
1-definition 2-Purpose 3-History 4-Description 5-Fittings 6-Materials7-Cast iron extended gill *-economizer -Inlet end -Return end
-* Mild steel fin extended surface economizer - Plug