Download - Ms6001b operation description
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MS 6001Heavy Duty Gas Turbine
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2 /GE /
February 11, 2010
0
500
1,000
1,500
2,000
2,500
3,000
3,500
0 50,000 100,000 150,000 200,000 250,000
Fired Hours
Fire
dSt
arts
Cyclic Duty
Peaking Duty
Base Load
• 42 MW… 50/60 Hz
• Launched in 1978
• Over 1000 units
• Over 47 million operating hours
• Wide range of applications
• 99% reliability… 97% availability
• 12,000 hours of continuous operation
• Fuel flexible… from refinery gases tocrude oil
• Low NOx emissions 15ppm
6B… unmatched experience
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February 11, 2010
6B evolution… 30 % increase in output
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19781978
19811983
19871995
19971999
MW
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6B evolution…
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6B Simple cycle performances
Output (MW): 42.1Efficiency (%): 32.1
Heat rate (kj/kwh): 11,230
Pressure ratio 11.8
Firing temperature (°C): 1,140
Shaft speed (rpm): 5,163
Exhaust flow (KG/sec): 141.1
Exhaust temperature (°C): 548
ISO conditions - natural gas
PG
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• Hot end drive• 2 bearings
Not to scale
• Axial flow exhaust• High performance
6B Design Features
• Axial compressor• 17 stages• IGV• Bolted construction
• 3 stage turbine• Bolted construction• Advanced materials• Enhanced cooling
• 10 can annular chambers• Dual fuel capability• 15 ppm NOx
(15% 02) with gas fuel
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February 11, 2010
Gas Turbine Position Orientation
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February 11, 2010
MS 6001 B DESCRIPTON
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February 11, 2010
6B Typical layout
Exhaust stack
Generator
Accessories
Gas turbine
Turbine controlcompartment
Inlet filter
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6B – Turbine support
The base that supports the gas turbine isa structural steel fabrication of welded
steel beams and plate
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February 11, 2010
INLET CASING
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6B – Inlet Casing
The inner bellmouth ispositioned to the outerbellmouth by seven airfoil-shaped radial struts andseven axial tiebars
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February 11, 2010
Axial Compressor IGV
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February 11, 2010
Axial Compressor IGV
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February 11, 2010
LVDT
MOOG
Axial Compressor IGV
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February 11, 2010
Magnetic Speed Pickups Control Speed
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February 11, 2010
Water Washing Manifold
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February 11, 2010
AXIAL COMPRESSOR
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Feature:
stages 17
stage of IGV (variable) 1
stages of EGV 2
Pressure Ratio: 11,8
AIR FLOW (KG/sec): 140
SPEED (rpm): 5163
Material:
Stub Shaft NiCrMoV
Compressor Disc NiCrMoV (stg. 1-15)CrMoV (stg. 16-17)
IGV GTD 450
Blade C 450 (stg. 1-8)AISI 403 (stg.9-17)
6B – Axial Compressor
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February 11, 2010
Axial Compressor assembly
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Axial Compressor assembly
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February 11, 2010
6B – Inlet, Compressor, Discharge Casing
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6B – Compressor Casing
The compressor statorblade are mounted intoring segments in the firstfour stages.
The remaining stages have a squarebase dovetail and are inserted directlyinto circumferential grooves in thecasing
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6B – Extraction pockets
• Compressor discharge casing… bleed belt incorporated into casting• Extraction system pipework• Turbine casing… bosses for pipe flange attachment• Second stage nozzle with radiation shield
Fifth stage
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February 11, 2010
COMBUSTION SYSTEM
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Feature:
N° chamber 10
Type reverse flow
Burner single, dual fuel
Firing Temperature (°C) + 1100
Water injection available
Steam injection available
DLN available
Material:
Liner Hastelloy X + HS188
with Thermal barrier coating
Cap Hastelloy X + HS188
Crossfire Tube AISI 304
Transition piece Nimonic 263
with Thermal barrier coating
6B – Combustion Section
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6B – C.C. Typical Layout
View looking downstream
Spark Plug
Flame Dectors
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6B – C.C. Sectional Drawing
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• Proven Dry Low NOx design and experience…
–Gas 15 ppm NOx (15%, O2)
–Distillate 42 ppm NOx (15%, O2) with water injection
DLN systems
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Reaction zoneWhere the fuel is burnedwith the combustion air
Dilution zoneWhere additional air is mixedwith the hot combustion gases
Liner CapMetering holes atenter of air
Louverprovide a film of airfor cooling the wallsof the liner and cap
6B – Liner
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6B – Liner
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Transition Piece
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February 11, 2010
6B – Spark Plug and Flame Detector
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February 11, 2010
Steam Inj. is available for Wet NOx Reduction
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February 11, 2010
TURBINE SECTION
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Feature:
stages 3
Ratation counterclockwise
Type axial flow
SPEED (rpm): 5163
Material:
Stub Shaft CrMoV
Turbine Disc CrMoV
Nozzle 1°stg FSX 414
Bucket 1°stg GTD111
Nozzle 2°stg GTD222
Bucket 2°stg IN 738
Nozzle 3°stg GTD222
Bucket 3°stg IN 738
6B – Turbine Rotor
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1° Wheel Turbine
Spacer
2° Wheel Turbine
Spacer
3° Wheel Turbine
6B – Turbine Rotor
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• Use existing GTD111DS material…Nickel base alloy material and coatingtechnology
• Turbine aerodynamic analysis…New engine operating conditions
• Optimised cooling configuration…16 cooling holes
6B – First Stage Bucket
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February 11, 2010
6B – Internal Path cooling
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February 11, 2010
• Nickel base alloy material• Enhanced cooling of airfoil• Contoured tip shroud for creep life improvement
6B – Second Stage Bucket
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6B – Spacer
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• Use existing FSX414 material (cobalt base alloy)• Enhanced cooling of platforms• Improved leakage control with introduction of chordal
hinge and additional line seal
6B – First Stage Nozzle
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Second Stage Nozzle
Third StageNozzle
Use existing GTD222…nickel base alloy materialand coating technology
6B – 2nd Stage nozzle and 3rd Stage nozzle
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February 11, 2010
6B – Second Stage Shroud Block
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EXHAUST SECTION
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6B – Exhaust Frame
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6B – Exhaust Frame
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February 11, 2010
TURBINE BEARINGS
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The gas turbine unit contains two main journal bearings used to support the gas turbinerotor. The unit also includes thrust bearings to maintain the rotor-to-stator axial position.These bearings and seals are incorporated in two housings: one at the inlet and one in theexhaust frame. These main bearings are pressure lubricated by fluid supplied from the mainlubricating system. The fluid flows through branch lines to an inlet in each bearing housing.
No. Class Type
1 Journal Elliptical
2 Journal Elliptical
1 Thrust Load (Equalizing)
1 Thrust Unloaded (Non-Equalizing)
Journal Thrust Load Thrust UnLoad
6B – Turbine Bearings
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February 11, 2010
6B – No. 1 Bearing
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February 11, 2010
6B – No. 1 Bearing
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February 11, 2010
6B – Thrust Bearing
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6B – No. 2 Bearing