training at bhel haridwar

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A PPT ON TRAINING DONE AT BHEL HARIDWAR SUBMITTED TO : PROF. NARAYAN RAM PATEL SUBMITTED BY: DEEPAK SINGH 11EJIEE015 7th SEM

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Page 1: Training at BHEL Haridwar

A PPT ON TRAINING DONE AT BHEL HARIDWAR

SUBMITTED TO :PROF. NARAYAN RAM PATEL

SUBMITTED BY:DEEPAK SINGH

11EJIEE0157th SEM

Page 2: Training at BHEL Haridwar

WHAT IS BHEL ?

• BHEL stands for Bharat Heavy Electricals Limited.

• It is one of the most important PSUs of our country.

• It manufactures a wide range of electrical equipment like generators, motors, exciters and other power plant accessories.

Page 3: Training at BHEL Haridwar

•BHEL business operations cater to core sectors of the Indian Economy like:PowerIndustryTransportationTransmissionDefence

Page 4: Training at BHEL Haridwar

MANUFACTURING DIVISIONS OF BHEL

Heavy Electrical Plant, Piplani, Bhopal Electrical Machines Repair Plant (EMRP),

Mumbai Transformer Plant P.O. BHEL, Jhansi Heavy Electrical Equipment Plant Ranipur,

Haridwar Central Foundry Forge Plant Ranipur, Haridwar Heavy Equipment Repair Plant, Varanasi Insulator Plant, Jagdishpur, Distt. Sultanpur

Page 5: Training at BHEL Haridwar

Heavy Power Equipment Plant, Ramachandra Puram,Hyderabad

High Pressure Boiler Plant & Seamless Steel Tube Plant,Tiruchirappalli

Boiler Auxiliaries Plant, Indira Gandhi Industrial Complex, Ranipet

Industrial Valves Plant, Goindwal Electronics Division, Bangalore Component Fabrication Plant, Rudrapur Piping Centre, Chennai Regional Operations Division, New Delhi

Page 6: Training at BHEL Haridwar

BHEL HARIDWAR

• It is divided in 2 units i.e. Heavy Electrical Equipment Plant (HEEP) and Central Foundry Forge Plant (CFFP).

• We did our training at HEEP plant.• HEEP plant is divided into 8 blocks.• Turbo generators are manufactured at HEEP

plant.• Each block manufactures different

components of a turbo generator.

Page 7: Training at BHEL Haridwar

BHEL HEEP PLANT, HARIDWAR

Page 8: Training at BHEL Haridwar

VARIOUS BLOCKS AT HEEP

1) Block 1In block 1 mainly stator, rotor shaft and exciter are manufactured and assembled for LSTG (Large Size Turbo Generators). 2) Block 2In block two large size fabricated assemblies/components for power equipment are manufactured & assembled.

Page 9: Training at BHEL Haridwar

3) Block 3In block -3 steam turbines, gas turbines and turbines blade are manufactured and assembled. 4) Block 4In block -4 winding for turbo generator, insulating components for turbo generator are manufactured & assembled. 5) Block 5In block -5 fabricated parts of steam turbine are manufactured & assembled.

Page 10: Training at BHEL Haridwar

6) Block 6In block -6 fabricated oil tanks, hollow guide blades, rings, stator frames, rotor spiders are manufactured & assembled. 7) Block 7In block -7 all types of dies including stamping dies, stamping for generators & motors are manufactured & assembled. 8) Block 8In block -8 LP heaters, ejectors, steam coolers, oil coolers, ACG coolers, oil tanks are manufactured & assembled.

Page 11: Training at BHEL Haridwar

TYPES OF TURBO GENERATORS

The generator may be classified based upon the cooling system used in the generators such as:THRI, TARI, THDI, THDD, THDF, THFF, THW T = Turbo Generator H/A/W = Hydrogen, Air, Water D/F/I = Radial, Indirect, Forced W = (Water) cooling media used for cooling of

stator coil

Page 12: Training at BHEL Haridwar

COMPLETE TURBO GENERATOR SET

• Stator • Rotor• Turbine• Exciter

Page 13: Training at BHEL Haridwar

STATOR OF TURBO GENERATOR

• The stator of a turbo generator consists mainly of stator core and stator winding.

• The stator winding is the armature winding.• When rotor rotates a 3 phase emf is induced

in the armature winding.• Basically hydrogen gas may be filled inside

stator for cooling purpose.

Page 14: Training at BHEL Haridwar

STATOR CORE• A stator core looks like:-

Page 15: Training at BHEL Haridwar

• The stator core has slots in it so that the stator winding can be housed in the stator.

• The stator core is made up of ferromagnetic material so as to allow maximum amount of flux through it.

• Since the flux passing through the stator is varying, the stator core is made up of thin laminations to avoid eddy current losses in the core.

Page 16: Training at BHEL Haridwar

STATOR WINDING

• The stator has 3 phase, double layer, short pitched and bar type of windings having two parallel paths.

• Each slot accommodates 2 bars.• Each bar consists of hollow as well as solid

conductors.• Hollow conductors are used to make water

flow through them for cooling purpose.

Page 17: Training at BHEL Haridwar

• The hollow and solid conductors are arranged in alternate arrangements.

• A picture showing stator winding bars :-

Page 18: Training at BHEL Haridwar

TURBO GENERATOR ROTOR

The rotor comprises of following components:-• Rotor shaft• Rotor winding• Rotor wedges • Fans• Field lead connections

Page 19: Training at BHEL Haridwar

ROTOR SHAFT

• Turbo generators are high speed generators since they are used in steam and gas power plants.

• Because of high speed the diameter of turbo generator rotor has to be less.

• Therefore, the turbo generator rotor is of cylindrical type.

• The rotor shaft is made of high quality steel so as to permit flow of magnetic flux through it.

Page 20: Training at BHEL Haridwar

• The rotor shaft is machined and slots are cut into the cylindrical structure for rotor winding.

• For better accuracy and flawless machining, Computerised Numeric Control (CNC) lathe machines were being used for cutting, boring, etc.

Page 21: Training at BHEL Haridwar

A ROTOR SHAFT

Page 22: Training at BHEL Haridwar

A CNC LATHE MACHINE

Page 23: Training at BHEL Haridwar

ROTOR WINDING

• Slots are cut into the cylindrical rotor along the axis for placing rotor winding.

• The rotor winding is excited by dc supply from an exciter.

• The rotor is cooled by the hydrogen gas filled in the stator.

• Field connections are taken out from the rotor to supply dc.

Page 24: Training at BHEL Haridwar

TURBINES

The various types of turbines are :-• High speed turbines• Low speed turbines• Intermediate speed turbinesA turbine is connected to the rotor shaft of the generator. When highly pressurized steam/gas falls on the turbine, it rotates. This makes the rotor to rotate and emf is induced in stator windings.

Page 25: Training at BHEL Haridwar

A LOW SPEED TURBINE

Page 26: Training at BHEL Haridwar

A HIGH SPEED TURBINE

Page 27: Training at BHEL Haridwar

EXCITER

• An exciter is a dc generator which is used to provide dc supply to the field winding of the rotor.

• The exciter is connected to the rotor shaft and rotates with the rotor.

• An ac generator may also be used as an exciter and in that case the output of the exciter is first rectified and then given to the field winding of the rotor.

Page 28: Training at BHEL Haridwar

AN EXCITER

Page 29: Training at BHEL Haridwar

CONCLUSION

• BHEL has now started manufacturing Large Size Turbo Generators (LSTG) of capacity as large as 800MW and this company has been earning profits since its inception. It has been a fruitful experience to undergo training program at BHEL Haridwar and it has truly made me aware to the work environment of the industry.

Page 30: Training at BHEL Haridwar