BHARAT HEAVY ELECTRICALS LIMITED Industrial Training

General Awareness in steam Turbine Manufacturing.

PRESENTATION

ON

Presentation By:-ADITYA SHARMA12ME126HCST, Farah, Mathura

OVERVIEW OF BHEL BHEL was established in 1964. BHEL is one of the only 7 Public Sector Undertakings

(PSUs) of India clubbed under the esteemed 'Maharatna' status. On 1st February 2013, the Government of India granted Maharatna status to BHEL.

BHEL has a share of 59% in India’s total installed power generating capacity.

BHEL is engaged in the design, engineering, manufacture, construction, testing, commissioning and servicing of a wide range of products and services for the core sectors of the economy, viz. Power Transmission, Industry, Transportation (Railway), Renewable Energy, Oil & Gas and defence.

BHEL has 15 manufacturing divisions, two repair units, four regional offices, eight service centers and 15 regional centers and currently operate at more than 150 project sites across India and abroad.

MAIN MANUFACTURING UNITS1. BHEL Bhopal (Madhya Pradesh )2. BHEL Ramachandrapuram, Hyderabad (Andhra

Pradesh)3. Transformer Plant, BHEL Jhansi(Uttar Pradesh)4. High Pressure Boiler Plant and Seamless Steel

Tube Plant, Tiruchirapalli(Tamil Nadu) 5. Boiler Auxiliaries Plant, Ranipet (Tamil Nadu)6. ElectronicsDivision and Electro Porcelain

Division, Bangalore(Karnataka7. Jagdishpur (Uttar Pradesh)8. Rudrapur (Uttrakhand)9. Industrial ValvesPlant, Goindwal (Punjab)10. BHEL Ranipur, Haridwar (Uttarakhand) 11. Bharat Heavy Plates and Vessels Limited(Vizag)

BHEL HARIDWAR It is divided in 2 units i.e. Heavy Electrical

Equipment Plant (HEEP) and Central Foundry Forge Plant (CFFP).

I did my training at HEEP plant. HEEP plant is divided into 8 blocks. Steam turbines are manufactured at HEEP plant in

block 3.

BHEL HEEP PLANT, HARIDWAR

HEAVY ELECTRICAL EQUIPMENT PLANT:

1. BLOCK-1: Electrical Machine Shop

2. BLOCK-2: Heavy Fabrication Shop

3. BLOCK-3: Turbine Manufacturing Shop

4. BLOCK-4: CIM (Coils & Insulation Manuf.)

5. BLOCK-5: Condenser Fabrication & Forge Shop

6. BLOCK-6: Fabrication Shop & Die Shop

7. BLOCK-7: Carpentry & Heat Treatment Shop

8. BLOCK-8: Heat Exchanger Shop

BLOCK-3: TURBINE MANUFACTURING SHOP

HMS (Heavy Machine Shop)

Assembly Section

Turbine Section

Blade Section

BLOCK 3 LAY-OUT

STEAM TURBINES

A turbine is a device that converts chemical energy into mechanical energy, specifically when a rotor of multiple blades or vanes is driven by the movement of a fluid or gas. In the case of a steam turbine, the pressure and flow of newly condensed steam rapidly turns the rotor. This movement is possible because the water to steam conversion results in a rapidly expanding gas. As the turbine’s rotor turns, the rotating shaft can work to accomplish numerous applications, often electricity generation.

1. IMPULSE TURBINE2. REACTION TURBINE

IMPULSE TURBINE :The principle of the impulse steam turbine consists of a casing containing

stationary steam nozzles and a rotor with moving or rotating buckets. The steam passes through the stationary nozzles and is directed at high velocity against rotor buckets causing the rotor to rotate at high speed.

The following events take place in the nozzles :1. The steam pressure decreases.2. The enthalpy of the steam decreases.3. The steam velocity increases.4. The volume of the steam increases.

TYPES OF STEAM TURBINES

REACTION TURBINE :

A reaction turbine has rows of fixed blades alternating with rows of moving blades. The steam expands first in the stationary or fixed blades where it gains some velocity as it drops in pressure. It then enters the moving blades where its direction of flow is changed thus producing an impulse force on the moving blades. In addition, however, the steam upon passing through the moving blades again expands and further drops in pressure giving a reaction force to the blades. This sequence is repeated as the steam passes through additional rows of fixed and moving blades.

WORKING OF STEAM TURBINE:

Impulse Turbine:-• steam is expanded only in nozzles.• Blade passage of constant cross-section area.

Reaction Turbine:-• Pressure drop in fixed & moving blade.• Blade passage of varying cross-section area.

TURBINES MANUFACTURED AT BHEL

The various types of turbines are :-High pressure turbinesLow pressure turbinesIntermediate pressure turbines.

H.P TURBINE BLADES

A turbine blade is the individual component which makes up the turbine  section of a gas turbine. The blades are responsible for extracting energy from the high temperature, high pressure gas produced by the  combustor.

Size of its blades are smaller than IP & HP turbines.

LOW PRESSURE TURBINE BLADE Titanium alloys offer high strength to intermediate

temperatures at a density almost half that of steel and nickel-based superalloys. As a result, they have been adopted widely in the fan and compressor stages of the gas turbine for both disc and blade applications..

LP blade is larger than HP & IP. 

INTERMEDIATE PRESSURE TURBINE Intermediate pressure turbine having more pressure then L.P

turbine and less than the high pressure turbine(H.P) . Its blade is larger than high pressure turbine.

BLADE OF INTERMEDIATE PRESSURE TURBINE The size of blades of I.P steam turbine is larger

than H.P steam turbine , but smaller than L.P steam turbine.

CASING Lower half Upper half

GAS TURBINE:

Gas turbine have been used for electricity generation.

The gas turbine obtains its power by utilizing the energy of burnt

gases & air which are at high Pressure and Temperature.

For electricity generation, it is known as power turbine.

For propulsion unit in aircraft, it is called aircraft turbine.

CONCLUSION:- BHEL is the largest engineering and manufacturing enterprise in

India .

BHEL is a major contributor of equipment and systems to

industries.

At the all, till now BHEL is best in supply and manufacturing

products.

Summer Training gives the idea of ‘general awareness in steam turbine manufacturing’, & its process. Its provides practical idea to manufacturing several components of turbine.