features of bhel supplied supercritical steam turbine

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Bharat Heavy Electricals Limited Power-Gen India & Central Asia 2012 19 – 21 April 2012 Features of BHEL Supplied Features of BHEL Supplied Supercritical Steam Turbine Supercritical Steam Turbine Swapan Kr. Bhattacharyya Swapan Kr. Bhattacharyya BHEL, Haridwar BHEL, Haridwar

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Page 1: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Features of BHEL Supplied Features of BHEL Supplied

Supercritical Steam TurbineSupercritical Steam Turbine

Swapan Kr. BhattacharyyaSwapan Kr. Bhattacharyya

BHEL, HaridwarBHEL, Haridwar

Page 2: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Source : CEA

BHEL an Overview :

� BHEL i.e Bharat Heavy Electricals Limited, is the state

owned largest Engineering & Manufacturing Company.� It is the 12th largest power equipment manufacturer in

the world.� BHEL is the only Indian Engineering company

which ranked 9th most Innovative company in the world by US business magazine Forbes in 2011.

� It is also placed at 4th place in Forbes Asia's Fabulous 50 List of 2010.

� BHEL bagged many more prestigious National & International accolades.

� BHEL has 14 manufacturing divisions, 4 power sector regional centres, over 100 project sites, 8 service centres and 18 regional offices.

Page 3: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Source : CEA

…..BHEL an Overview :

� Our greatest strength is our highly skilled and

committed workforce of more than 46,000 employees.� About 72% of the total power generated in India is

produced by equipment manufactured by BHEL.

� BHEL Haridwar plant has manufactured and supplied around 250 steam turbines sets of different ratings of 100 / 195 / 200 / 210 / 250 & 500 MW to different power stations in the country, which forms the backbone of India’s power infrastructure.

� The company has also introduced new rating Thermal sets of 270 / 300 / 525 & 600 MW in subcritical range.

� The company has proven turnkey capabilities for executing Power projects right from the concept to

commissioning.� We have a Technical Collaboration Agreement with

Siemens for Steam Turbine.

Page 4: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Source : CEA

Page 5: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

System Diagram

Page 6: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Features of BHEL supplied, Siemens design Steam Turbines

BHEL supplied, Siemens design Steam Turbines are equipped with advance and proven design features:-

� Overload valve.

� Internal bypass cooling system in HP Turbine.

� Low reaction diagonal blades.

� Advance class blading.

� EHA-based high pressure governing system.

Page 7: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Isometric View of 660 MW Steam Turbine

Page 8: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Isometric View of 800 MW Steam Turbine

Page 9: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

• Single flow

• Double shell casing

– Inner casing vertically split

– Outer casing barrel type & axially divided

– Single exhaust in L/H

• Mono block rotor

• Casing mounted valves

• Internal bypass cooling

• Transported as single unit

HP TurbineHP Turbine

Page 10: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

HP Turbine Additional Features

Page 11: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

• Better guidance of Radial flow into Axial flow

• No leakage losses

HP Turbine Diagonal Low Reaction stage

Page 12: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

• Double flow

• Double casing design with horizontal split

• Inlet from Lower half

• Single Exhaust from upper half

• Extraction connections from lower half

• Admission blade ring

IP Turbine

Exhaust

Page 13: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

• Double flow

• Double shell casing

• Single admission from top half

• Outer Casing & condenser rigidly connected

• Push rod arrangement to minimize axial clearances

• Mono block rotor

• Inner / Outer casing fabricated

LP Turbine

Page 14: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

3-dimensional variable stage reaction blades for each

individual stage, to maximize the efficiency.

Advance Class Bladings : 3DV Blades

Page 15: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Governing System

� Governing system controls the steam flow to the turbine in response to the control signals.

�� Throttle Governing.

� Steam Turbine is equipped with High Pressure Governing System.

Page 16: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Turbine Startup & Operation:

� Turbine Controller take care of automatic turbine start-up sequence.

� Maximum possible flexibility in the hands of the operator : Three different start-up modes can be selected, which are Fast, Normal & Slow.

Page 17: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

BHEL ’s Manufacturing Facilities

CNC FIR TREE GROOVE MILLING MACHINE

CNC Vertical Borer

3DS Blade machining on 5-axis CNC Milling M/c

Page 18: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

BHEL ’s Manufacturing Facilities

Overspeed & Vacuum Balancing Tunnel

For balancing and overspeed testing of rotors upto 320T, 18M and Ø6900mm under vacuum condition of 1 Torr

Page 19: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

CONCLUSION

The overall benefits of BHEL supplied supercritical sets are:

� Quick start up and Load Changes � Operational flexibility

� Option to choose different start-up modes between fast, normal & slow. � Continuous information on residual turbine life. � Turbine is capable of long term reliable operation

� BHEL has very dedicated & rich experienced engineering manpower, who are also deployed at site whenever required.

� Modernised manufacturing facilities to ensure delivery of quality product.

Page 20: Features of BHEL Supplied Supercritical Steam Turbine

Bharat Heavy Electricals Limited

Power-Gen India & Central Asia 2012 19 – 21 April 2012

Thank

Thank

ss

BHEL, a Company with wide Capabilities