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Copyright © 2018 by Technical Training Professionals
Course 0611
LM6000 Combustion Turbine
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
Copyright © 2018 by Technical Training Professionals
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
LM6000 Combustion Turbine Course Chapter 1 – Combustion Turbine Overview This chapter provides a brief overview of the LM6000 gas turbine, including its components and support systems. The LM6000 is an aero-derivative design gas turbine. For this course, a base LM6000 unit with a single annular combustor and SPRINT water system is used.
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
611_B5_Ch1 – Overview
1. Overview
a. The LM6000 turbine is a 43MW aero derivative machine with spray intercooling,
which has the acronym “SPRINT” and with Enhanced SPRINT called “E-
SPRINT,” power output can be augmented up to 47.5MW.
Classroom Discussion Point:
1. SPRINT is a compressor water injection system that cools the air flowing into
the machine. This cooling will increase the density of the air, resulting in
more mass flowing through the machine. More mass equals higher megawatt
production. This optional system produces around a 10% increase in
megawatt output.
2. The LM6000 combustion turbine features a quick 5-minute start and can
reach full load within 10 minutes.
3. Popular models available:
a. LM6000-PC, SAC, 25ppm NOx, 43MW to 47MW with SPRINT.
b. LM6000-PD, DLE, 15ppm NOx, 43MW to 47MW with SPRINT.
c. LM6000-PF, DLE / -PB model is older.
d. LM6000-PG, SAC, 25ppm NOx, 52 to 58MW with SPRINT.
e. LM6000-PH is a DLE unit, 15ppm NOx, 50MW to 52MW with
SPRINT.
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
2. Turbine Design
a. The turbine is unique in that it is a two-speed, two pressure system, of shaft
within a shaft design.
b. There are four sections to the turbine, a low pressure compressor, high pressure
compressor, low pressure turbine, and high pressure turbine.
c. The low pressure compressor and low pressure turbine are the outer-sections
and are connected by the inner rotor.
Classroom Discussion Point:
The LM6000 combustion turbine is based on the CF6-80C2 aircraft engine found on
Boeing 747 airliners. The LM6000 and aircraft model share an identical HP
compressor, HP turbine, LP turbine, and combustor.
Classroom Discussion Point:
4. SAC refers to a single annular combustor equipped with 30 nozzles. DLE
refers to dry-low emission model that uses nozzles with multiple tips and
staged fuel injection.
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
3. Low Pressure System
a. The generator attached to this turbine is coupled at the low pressure compressor
side. The low pressure system rotates at 3,600 rpm.
b. The low pressure rotor is located within the high pressure system rotor.
4. High Pressure System
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
a. The high pressure compressor and high pressure turbine are located between
the low pressure sections and connected by the outer rotor of the machine.
b. The high pressure system rotates at 10,350 rpm.
5. Accessory Gearbox
a. The accessories motive force is provided from the high pressure rotor. The
accessory gearbox located below the high pressure compressor is the prime
mover for the lube oil and hydraulic pumps.
b. The starter is also mounted on the accessory gearbox for startup and various
turning operations.
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
6. Inlet and Transfer Gearboxes
a. The inlet gearbox located inside the rear low pressure compressor section,
connects the high pressure rotor to the radial shaft to drive the accessory
gearbox.
b. The section connecting the radial shaft to the accessory gearbox is the transfer
gearbox which contains a short horizontal shaft for this purpose.
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
7. Thrust and Roller Bearings
a. Bearing 1 at the forward compressor is the thrust bearing for the low pressure
system.
b. Bearing 4B between the high pressure compressor and high pressure turbine is
the thrust bearing for the high pressure system.
c. All other bearings in the turbine are roller bearings, each system containing three
of them.
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
8. Generator
a. The generator is an open ventilation unit with brushless excitation, self-contained
lubrication system, and lift oil system.
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
Test
1) Overview
The acronym “SPRINT” performs what function for the LM6000 turbine system?
A. Air heating
B. Fuel augmentation
C. Intercooling
D. Mass addition
2) Outer Sections
The outer sections of the turbine are part of the ____________system. A. Generator
B. Low pressure
C. Outer rotor
D. High pressure
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
3) Outer Shaft
The outer shaft of the turbine is part of the ____________system. A. Generator
B. Low pressure
C. Outer rotor
D. High pressure
4) Accessory Gearbox
The accessory gearbox is driven by which system?
A. Low pressure generator
B. Hydraulic
C. Accessory skid
D. High pressure
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
5) Generator
Which of the following is a feature of the LM6000 generator?
A. Hydrogen cooled
B. Tilt pad bearings
C. Brushless excitation
D. Water cooled
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Course GEN01A_0611_B5 – LM6000 Combustion Turbine
Copyright © 2018 by Technical Training Professionals
Test Answers
1) C
2) B
3) D
4) D
5) C
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