d series combined cycle steam turbine

8/11/2019 D Series Combined Cycle Steam Turbine

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GE Energy

Evolution of theD Series Combined CycleSteam TurbineJune 2011


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2011 General Electric Company. Proprietary. All Rights Reserved.

No part of this document may be reproduced, transmitted, stored in a retrieval system nor translated into any human or computer

language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, without the prior

written permission of the General Electric Company.


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I. A Brief History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introducing Structured Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

109D-12 Single and Multi-shaft Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

207D-11 Product Enhancements the 207D-11A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2207D-11D Fossil Experience Enables 2400 psig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

109D-14 HEAT Technology in Double Flow Configurations for 50 Hz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Expanding HEAT Technology to 60 Hz Double Flow Combined Cycle Designs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

II. Our Technology and Its Evolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Last Stage Buckets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Impulse and Reaction Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Improvements in Diaphragm Designs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

N2 Packing Design Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Integral Cover Buckets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Variable Clearance Positive Pressure Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Brush Seals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

III. Expanding Combined Cycle Platforms to 2400 psig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

The 207D-11D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

District Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

IV. HEAT Steampath Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Taking HEAT from A Series to D Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

207D-17 for the 60 Hz Market. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

V. Why Buy GE? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

GE Energy | GEA18786 (06/2011)

Contents:


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GEs D Series combined cycle (CC) steam turbine provides our customers a high power density, world-class thermal efficiency product.

Available in both 50 or 60 Hz single shaft and multi-shaft configurations, the D Series CC steam turbine is designed for a wide range of inlet

steam conditions and HRSG firing capabilities. With a fleet of over 5000 units installed worldwide, GEs experience as a steam turbine designer

and manufacturer continually evolves.

I. A Brief HistoryGEs continuing development of reheat steam turbines for combined cycle applications spans two decades of design enhancements

and continued improvements in efficiency and operability of bottoming cycle applications.

Through the early 1990s GE had already amassed extensive experience in reheat and non-reheat steam turbinesdesigning reheat steam

turbines for fixed pressure fossil applications with pressures of up to

3500 psig and temperatures up to 1000F, and non-reheat steam

turbines for industrial applications of sliding and fixed pressures

up to 1400 psig and temperatures of up to 900F. Drawing on that

combined experience, GE introduced the first GE Double Flow Reheat

CC steam turbine with steam conditions of 1400 psig/1000F/1000F.

In 1992 the fleet leader was deployed in a 207F combined cycle

power plant in Florida.

The following year the code 207D-11 was adopted, reflecting the

design characteristics of a single shell, opposed-flow combined high

and intermediate pressure (HP/IP), double-flow low pressure (LP)

steam turbine.

GE Energy | GEA18786 (06/2011) 1

Evolution of the D Series Combined Cycle Steam Turbine

GE Combined Cycle Steam Turbine Commercial Operation Dates

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

45

40

35

30

25

20

15

10

5

0

Figure 1. GE CC Steam Turbines CODs

Figure 2. D Series Development Timeline

1992 2009 2010 2011

Migrated fossildesign

Sliding pressureinlet

Single shelldesign

Double flow LP

207D-11

Reduced span

Increased power

density viaDense Pack

External bearings

Correctedvarious previousD-11 problems

207D-11A

Leveraged fossil experience,

increasing pressure to

2400#

Double HP/IPshell

207D-11D

Evolution of D-14

3 casing configuration

for maximum efficiency

Accommodates various firing needs

207D-17


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Introducing Structured Design

With worldwide demand increasing in the late 1990s, GE introduced the structured 207D-11 offering to support the power generation

needs of our customers. Building on our F class gas turbine and steam turbine products, the structured design provides enhanced solutions

for combined cycle power generation, significantly decreasing delivery time.

The structured 207D-11 concept evaluated the design space for a GE 207FA combined cycle power plant, creating customized pre-engineered

combined cycle steam turbine solutions. From 2000 to 2002, GE shipped over 100 207D-11 steam turbines. The 109D-10 design was also

developed in the mid 1990s to support 9F applications in single shaft (SS) configurations.

109D-12 Single and Multi-shaft Configurations

With further increases in demand for combined cycle power generation, to increase output capabilities customers required greater

application and operational flexibility in both an axial single flow and double flow design. So in 2006, GE introduced the 109D-12 product,

providing single shaft combined cycle steam turbine capabilities beyond that of the earlier A Series HEAT*product line.

The 109D-12 configuration can also be applied in multi-shaft (MS) configurations for larger applications. The first unit shipped to Europe

in 2009. There are a total of six units in the 109D-12 fleet today.

207D-11 Product Enhancements the 207D-11A

As the 207D-11 fleet matured, GEs continued New Technology Investment (NTI), operating experience of the 207D-11 fleet, and the collective

voice of GEs customers led to improvements and technological advancements, introduced in 2009 as GEs 207D-11A product.

The 207D-11A maintains GEs heritage impulse technology and delivers increased

power density through the incorporation of Dense Pack* steam path technology,

originally developed in our fossil steam turbine products, and a redesigned LP

section. These enhancements yield improved efficiency while affording customers

lower overall plants costs due to GEs high power density reduced span design.

The 207D-11A also delivers improved performance and maintainability by virtue

of new technology features, developed as part of GEs continued investment in

steam turbine technology, and improved LP hood aerodynamics.

As with all product evolution, design enhancements were made to directly

address challenges documented in Technical Information Letters (TILs) related to the 207D-11 product, such as the addition of jacking

provisions on the N2 packing head for improved maintainability, improved horizontal joint sealing, and enhanced diaphragm technology.

207D-11D Fossil Experience Enables 2400 psig

As customers continued to request improved combined cycle efficiency, GE applied its D Series fossil experience, along with its HEAT combined

cycle experience to bring 2400 psig inlet steam capabilities to the D Series steam

turbine products for combined cycle.

In 2010 GEs 207D-11D steam turbine was introduced. This design incorporates

a double HP/IP shell construction used in GEs fossil technology and A Series

HEAT combined cycle technology. The 207D-11D is a great complement to the

D Series where customers require large output and duct firing to fit their project

requirements. For the highly duct fired projects, the increased inlet pressure enables

a more efficient unfired condition while pressure slides up when the steam flow is

increased, reaching maximum pressure capability at the maximum fired point.

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Figure 3. Enhanced 207D-11A

Figure 4. 207D-11D HP/IP with Inner and Outer Shells for 2400 psig


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109D-14 HEAT Technology in Double Flow Configurations for 50 Hz

Building on A Series HEAT technology, and fleet experience of 27 units with over 250,000 operation hours, GE introduced the 109D-14

steam turbine for 50 Hz applications. This design supports an integrated 50 Hz SS plant design with high power density, increased efficiency

and operational flexibility. The 109D-14 incorporates advances in drum rotor technology, and separate HP and IP sections (three separate

casings design), and supports inlet steam capabilities of 2400 psig/1080F/1080F.

This integrated plant design with GEs 50 Hz F-class gas turbine includes a Synchro Self Shifting (SSS) clutch between the generator and

GEs combined cycle steam turbine, enabling faster and more flexible starting and loading. In addition, the 109D-14 design incorporates

a single side exhaust with a common LP outer capable of supporting either cooling tower and air cooled condenser configurations,

helping to reduce overall plant costs.

Expanding HEAT Technology to 60 Hz Double Flow Combined Cycle Designs

Based on the 50 Hz 109D-14 design, GE developed the 207D-17 60 Hz-capable design, providing HEAT technology in a double flow

LP configuration. Similar to the 109D-14, the 207D-17 uses HEAT technology and three casing design architecture. The 207D-17 is also

designed for improved efficiency and operational flexibility in a down exhaust configuration for multi-shaft 2 x 1 configurations. To

accommodate various duct firing needs for any project, the LP section is sized according to the condenser cooling arrangementneeded for the project, typically cooling tower or air cooled.

II. Our Technology and its EvolutionLast Stage Buckets

GE has LSBs available for:

All last stage buckets are fully validated designs with extensive hours of operation in the field. Validation data can be provided

upon request.

GE continues to invest in research and operating analysis of its installed fleet to provide customers with improved combined cycle

steam turbine operational flexibility. LSB studies conducted to address operation at elevated back pressure conditions have been

conducted, including:

Unsteadiness of steam flow downstream of the last stage bucket and consequential broadband stimuli induced vibration

Windage heating experienced in the LP hood

Last stage bucket loading

These studies led to increases in allowable exhaust pressure operation limits for LSB designs with continuously coupled, side entry,

cover, nub and sleeve connection for 3000 RPM and 3600 RPM applications. Detailed operational guidelines are available in the technical

brochure GEK116554, which is available from your GE sales or service manager. The backpressure trip limit has been increased from

9 to 11.5 HgA for annulus velocities of 200 ft/s and above. The trip for annulus velocities less than 150 ft/s remains unchanged

at 7.5 HgA.

GE Energy | GEA18786 (06/2011) 3

60 Hz product applications: 20 (500 mm) 30 (760 mm)

34.5 (880 mm) 40 (1020 mm)

50 Hz product applications: 33.5 (820 mm) 42 (1040 mm)

48 (1220 mm)


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Impulse and Reaction Technologies

GEs D Series combined cycle steam turbine designs incorporate both impulse and reaction technologies. The 109D-10, 207D-11,

207D-11A, 207D-11D and 109D-12 are impulse designs, with Dense Pack features such as higher reaction, compact stage spacing,

advanced seals and integral cover buckets. The 109D-14, 207D-17, and A Series combined cycle products incorporate our HEAT reaction

steam path technology, providing additional improvement in overall efficiency.

Improvements in Diaphragm Designs

Singlets* are a standard feature in GEs current impulse designs. This advanced nozzle diaphragm design implements the latest

manufacturing techniques to achieve improved performance. The singlet design incorporates a precision-machined steam path along

with a mechanical construction design. Singlets enable advanced nozzle designs with tight tolerance control2X improvement in area

control, 3X improvement in surface finish and profile, and 5X improvement in trailing edge profile.

Singlet constructed diaphragms are one of the options introduced to replace traditional constructed diaphragms to address dishing

(distortion) of diaphragms found in service during maintenance outages.

N2 Packing Design Enhancements

GE has enhanced its N2 packing casing design for combined

HP/IP configurations incorporating new robust main fit geometry.

The enhanced design is the result of a rigorous study to address

potential cracking associated with material properties variations

and includes:

TIL 1627 with respect to potential N2 packing head groove cracking

Geometry changes to reduce stress levels

Improved horizontal joint sealing through additional bolting

provisions

Improved maintainability through the addition of jacking

provisions to facilitate easier disassembly for maintenance

4

Figure 6. Enhanced N2 Packing Head

N2 Packing HeadLower Half

N2 Packing Head

Figure 5. Singlet Construction

Traditional Improved Actual

Existing web/ring design New Singlet construction

Inner Ring

OuterRing

SingletSinglet

Singlet with Ti Nitrate coating


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Integral Cover Buckets

In 2000, GE introduced its first generation (Gen 1)

Integral Cover Bucket (ICB) in fossil Dense Pack applications,

followed by the incorporation of advanced integral covered

bucket designs in the D Series combined cycle products.

Todays Gen 2 and T-root ICB designs have a full rhombic

cover design, integrating advanced sealing technologies

and clean root geometry, resulting in a smooth steam

path sidewalls design and enhanced performance.

Variable Clearance Positive Pressure Packing

Variable Clearance Positive Pressure Packing (VCPPP) was originally introduced in GEs fossil Dense Pack fossil applications in the mid-1990s.

Todays VCPPPs include abradable coatings that improve long-term efficiency by maintaining sharpness of the sealing teeth. An interlocking tooth

configuration provides reduced start-up and turning gear operation rubbing, further reducing leakage up to 20% compared to conventional toothgeometry. Abradable coatings were first introduced in GEs HEAT technology and are now used extensively in GE steam turbine products.

GE Energy | GEA18786 (06/2011) 5

Figure 7. ICB Development History

PeenedCover Design

Pre-2000

2 tip seals

Gen1 ICB2000

5-7 tip seals

Cover gaps

Gen2 ICB2005

Full rhombic

No cover gaps

Adv sealcompatible

T-root ICB2010

Samefunctionality

Enablesshorter span

Figure 8. VCPPP with Abradable Coating

Interlocking tooth design provides up to 20% additional leakage reduction

Abradable material up to 0.06 thick is applied to the packing ring between

long teeth

Packing rings can be quickly re-sprayed

Abradable material cuts in cleanly with little heatgeneration, no mushrooming of tip

Dissipates into a fine powder, does not cause

downstream damage

Improves long-term efficiency by keeping packing

teeth sharp


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Brush Seals

Advanced seals were developed and tested at GEs Global

Research Center to understand seal behavior under simulated

steam turbine operating conditions. To date, brush seals offer

the tightest clearance amongst all seals along with a significant

improvement in leakage control and overall improved steam

turbine performance.

With advancements achieved in bucket design, brush seals are

now employed at tip locations, significantly reducing leakage as

compared to traditional bucket tip seal designs. A brush seal bristle

pack is able to withstand transient events while maintaining the

integrity of the seal. Applications at bucket tips are intended to

provide flexible clearance control while also being able to handle

transient events without losing the integrity of the seal.

III. Expanding Combined Cycle Platforms to 2400 psigTo provide customers with further increases in efficiency in the CC steam turbine fleet, GE drew from extensive fossil steam turbine

experience where double shell construction has been used at inlet pressures of 2400 psig for over 60 years.

Applying our experience with the D Series fossil unit fleet and fossil-to-CC retrofits, GE incorporated double shell construction into theD Series CC steam turbine and developed the 207D-11D, capable of operating at a nominal pressure of 2400 psig.

The 207D-11D

Similar in architecture to the 207D-11A, the 207D-11D is a reheat opposed flow HP/IP design with a double flow LP section, capable of

steam turbine inlet nominal conditions of 2400 psig/1050F/1050F. The design is currently available for 60 Hz applications, for 207 and 307

configurations and like the 207D-11 and 207D-11A, the 207D-11D can accommodate GEs family of LSBs referenced earlier. The robust

design also supports extractions for district heating or gas turbine steam injection applications to fit customers needs.

6

Figure 9. Brush Seal at Rotor

Figure 10. Single and Double Shell Construction

Inner and Outer Shell Construction Single Shell Construction


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Main steam and reheat inlets are located in the lower half along with the HP exhaust with the crossover located in the upper half close to

the HP exhaust. This allows the inner shell to be bathed with IP exhaust steam, eliminating potential thermal distortion from top to bottom.

Benefits of GEs 207D-11D design configuration include:

Reducing temperature on the outer shell to improve shell life and mitigate outer shell thermal distortion

Dramatically simplified and standardized bolting design to reduce flow losses at inlet and exhaust annuli (same material and same

sized studs are used for 90% of the outer shell)

Location of main fit enables the shell to grow in the same direction as the rotor, and reduce axial clearance

This arrangement/configuration of shells, similar to GE fossil designs, allows for cooling of the inner shell, improving both inner shell life

and clearance control.

The steam path features are similar to those of the 207D-11A, including GEs latest buckets, nozzles and seal technologies.

District Heating

GE has developed combined cycle steam turbines (CCST) with

the flexibility to provide customized solutions for large extraction

applications. Our solutions cover a wide range of designs to match

varying customer needs, including: extraction from the LP cross over,

extraction(s) from the HP/IP sections, and the integration of a SSS

clutch between the IP and LP sections for increased district heating

extraction applications.

IV. HEAT Steampath TechnologyThe success of the 107A-14 HEAT combined cycle steam turbine

launch in 60 Hz was quickly followed with the launch of GEs109A-15 combined cycle steam turbine for 50 Hz. Similar to the

107A-14, the 109A-15 has gone through extensive field validation

confirming its exceptional operability and performance.

Further improvements led to GEs next generation 50 Hz A series

steam turbine product for combined cycle applications, the GE

109A-17, extending inlet pressure and temperature capabilities

to 2400 psig/1112F/1050F. Added in 2010, this 109A-17 design

delivers enhanced performance that is integrated into GEs 109FB

single shaft standard combined cycle power plant offering for

50 Hz customers.

Taking HEAT from A Series to D Series

In response to customers requiring larger output combined cycle

power generation plants with improved base load and part load efficiency, enhanced start-up reliability, and improved turndown, GE

developed its FlexEfficiency* 50 standard combined cycle power plant. This new 50 Hz single shaft plant is an innovative total plant design

that sets a new standard for high efficiency and operational flexibility.

GE Energy | GEA18786 (06/2011) 7

Figure 11. District Heating

Apartment

Business-commercial

buildings and public institutions

Heat-accumulator Heat-exchanger

Heat-only boilerCombined heat

and power plant

Heat Production Facilities Heat Transmission Facilities Heat Consumer Facilities

District

transmission pipe

Figure 12. HEAT Technology


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The 109D-14 combined cycle steam turbine was developed for this single shaft arrangement supporting GEs integrated plant design solution

Nominally rated at 180 MW, the 109D-14 uses a three-casing design architecture with HEAT steam path technology with steam inlet

capabilities of 2400 psig/1112F/1112F delivering shaft efficiencies of greater than 40%. Its three-casing design and drum-type rotor

architecture along with high reaction HEAT steam path technology and stationary blade blinglet system enables improved clearance

controls across shorter bearing spans, providing improved operability and flex-efficiency.

The two-flow side-exhaust configuration reduces overall plant capital expenditure, allowing ground-level connections of the LP hood into the

lateral condenser with a reduced overall centerline height of GEs single shaft plant design.

Integration of an SSS clutch in GEs 109D-14 steam turbine design also provides improved operational start up flexibility and maintenance

benefits of the single shaft gas turbine train, allowing the CCST to be clutched out and on turning gear for cool-down while maintenance is

being conducted on the gas turbine. It reduces auxiliary steam requirements during hot start-up cycles (shutdowns typically less than six

hours). This enables gas turbine output of 85% load in less than twenty minutes, and can reduce customer planned maintenance cycles, by

two less days typically.

The key features of the 109D-14 steam turbine are:

Separate HP, IP and LP configuration improved sealing and

clearance control for increased efficiency

Proven HEAT steam path technology

HP, IP and LP drum rotor construction with blinglet nozzles

Advanced 820 mm and 1040 mm LSBs with improved aerodynamic

and dovetail configurations

Integrated SSS clutch in front standard increasing plant

operational flexibility

Single-side two-flow exhaust hood reduced plant centerline height

Common LP hood architecture across both cooling tower and

air-cooled condenser applications

207D-17 for the 60 Hz Market

Much like the 50 Hz market, the 60 Hz market has the same need for high base and part load efficiency, start-up reliability, and improved

turndown. GEs 207D-17 steam turbine was developed for the multi-shaft 207FA arrangement, and is rated up to 450 MW, using a three-

casing design architecture also incorporating HEAT steam path technology. The 207D-17 uses much of the same architecture as the

109D-14, accommodating current inlet conditions of 2400 psig/1050F/1050F with plans to increase inlet pressure and temperature

capabilities to 2400 psig/1112F/1112F in the future.

The 207D-17 combined cycle steam turbine is designed to accommodate the full range of duct firing up to 100%, and uses a two-flow

down-exhaust configuration and GEs advanced 40 (1016 mm) steel LSB for the cooling tower configuration and its 34.5 (876 mm) LSB

for air-cooled condenser applications.

8

Figure 13. 109D-14 Steam Turbine


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The key features of the 207D-17 steam turbine are:

Separate HP, IP and LP configuration improved sealing and

clearance control for increased efficiency

Proven HEAT steam path technology

HP, IP and LP drum rotor construction with blinglet nozzles

0100% duct firing capability

Advanced 40 (1020 mm) and 34.5 (880 mm) LSB with improved

aerodynamic and dovetail configurations

Downward two-flow exhaust hood

Modular section design capable of five month installation

V. Why Buy GE?We know steam turbines. With an installed fleet of over 5000 units. GE has been providing power generation equipment for more than

100 years with a focus on you, our customer. Our team is available 24 hours a day to assist customers globally in the development of new

plants, and to support maintenance and outages with a network of experienced steam turbine engineers and service shops globally.

Were dedicated. GE is all about its people and we have the best when it comes to our steam turbine products. Many have devoted their

careers to the development of innovative steam turbine technology and customer service. From the design engineer to the field engineer,

GE has a wealth of experienced people that work day in and day out with steam turbines, and can be trusted to provide valuable insight

into the issues you face.

We deliver value. Our expertise and dedication give our customers confidence that we constantly invest in new technology to bring

improved products to market and we are there when needed 24/7 to take care of our fleet.

GE Energy | GEA18786 (06/2011) 9

Figure 14. 207D-17 Steam Turbine


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d series combined cycle steam turbine

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