INTRODUCTION: BHEL is the largest engineering and manufacturing enterprise in India in the energy related infrastructure sector today. BHEL was established more than 40 years ago when its first plant was setup in Bhopal. BHEL is one of India’s nine larger Public Sector Undertakings or PSUs ,known as the NAVRATNAS or the nine jewels . The wide network of BHELs 14 manufacturing division, four power Sector regional centre, over 150 project sites, eight service centre and 18 regional offices. BHEL has already attained ISO 9000 certification for quality management, and ISO 14001 certification for environment management
The power plant equipment manufactured by BHEL is based on contemporary technology comparable to the best in the world and is also internationally competitive. BHEL is the only company in India with the capability to make simultaneous for power plants, defense and other applications.
STEAM TURBINE: Turbine is an engine that converts energy of fluid into mechanical energy . Steam turbine depends completely upon the dynamic action of the steam. Steam turbine is steam driven rotary engine.
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.
ROTOR AND CASING OF STEAMTURBINE: HP (High Pressure) IP (Intermediate Pressure) LP (Low Pressure)
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.
BLADES MANUFACTURING: Operations Performed On Blades: Inspection Cutting Milling Grinding on both the surfaceo Machining Of Blades: Horizontal milling machine Central lathe machine CNC machine Vertical boring machine
Mostly 500MW turbine blades are manufactured in this shop. Basically the design of blades is classified according to the stages of turbine. The size of LP Turbine blades is generally greater than of HP Turbine blades.
OVER SPEED BALANCINGTUNNEL:Features: max. thickness of tunnel : 2500mm tunnel diameter : 9000mm min. vibration limit : 1micron over speed limit : 2500 to 4500 rpm rotor balancing of max. : 600Mw rating type of pedestal : DH 90/ DH 12
CONCLUSION:- BHEL is the largest engineering and manufacturing enterprise in India . The company manufactures 235 MW nuclear turbine generator sets and in future it will 500 MW. BHEL is a major contributor of equipment and systems to industries. At the all, till now BHEL is best in supply and manufacturing products.