Non Reheat, Triple Pressure, Lateral Exhaust

Steam Turbines for Combined Cycles

Triple pressure reheat concept with axial exhaust

Steam Turbines for Combined Cycles

Double Casing Single Flow Reheat Steam Turbine

Steam Turbines for Combined Cycles

Medium and Reheat Steam Turbines

250 MW

350 MW

Single Casing Single Flow Steam Turbine

Steam Turbines for Combined Cycles

Steam Turbines for Combined Cycles

Single Casing Single Flow No Reheat Solution

Steam Turbine Lateral Exhaust Overview

Steam Turbines for Combined Cycles

Auxiliay systems

Generator

Condenser

IP- Turbine

LP- Turbine

Steam Turbines for Combined Cycles

Lateral exhaust direction for floor mounted concept

Steam Turbines for Combined Cycles

Lateral exhaust direction for floor mounted concept

Base mounted

arrangement

enables low

foundation costs

LP exhaust

casing, integrated

in foundation

design

IP-Turbine Generator

Two Casing non Reheat Solution

Lateral exhaust layout

Low profile building

Double flow exhaust

Steam Turbines for Combined Cycles

Compact, robust design

Small flow losses

Relatively constant angle of attack of radial fixed blades

Low relative steam/rotor velocity

The inlet passage of all the sections is designed as a scroll or spiral

Inlet scroll

Advantages

Medium and Reheat Steam Turbines

Robust design

Suitability for two-shift operation

Excellent reliability as the blade is not made with parts

Simple and fast assembly

All moving blades are manufactured from one piece

One-Piece Blades with shroud

Advantages

Medium and Reheat Steam Turbines

Customer Benefits

◆ High efficiency

◆ Reliable operation

◆ Resistance against corrosion, long life-time

◆ Easy replacement (if ever needed)

Features

◆ Free-standing rotating LSB, no lacing wires

◆ Exact calculation of natural frequencies

◆ Induction hardened leading edge

◆ Circular fir tree root

Typicalrotating blade

12 % Cr steelprecision forged blade

Typicalstationary blade

Ductile cast material

Medium and Reheat Steam Turbines - Low Pressure Sections

Simple replacement of individual blades

No aerodynamic losses from interconnecting elements

Exact definition of natural frequencies and operation stresses

No stress concentrations caused by interconnecting elements

Free-standing last-stage blades

Advantages

Medium and Reheat Steam Turbines

20 50 2.5 With lacing wire

26 50 3.96 With lacing wire

31 50 5.5 Free standing

33 50 6.1 Free standing

37 50 7.2 Free standing

43 50 9.6 Free standing

20B 60 2.5 With shroud

26 60 3.96 With lacing wire

30 60 5 Free standing

36 60 6.7 Free standing

LP type Speed Exhaust area LSB type

( 1/s ) per flow

( m2 )

Medium and Reheat Steam Turbines - Low Pressure Sections

Erosion Protection of Last-Stage Rotor Blades by Incorporating

Nozzle Water Removal

Medium and Reheat Steam Turbines - Low Pressure Sections

Outer ring channel

Dividing plane

Outlet to the condensator

Slots

Inner ringchannel

Fixedblade

Simplified View of the Water Extraction System

Medium and Reheat Steam Turbines

Operatricetermica

Compressori alternativi