29-03-2012, 11:52 AM
BRIGHTENING LIVE POWERING PROGRESS
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INTRODUCTION –
BHEL was established more than 50 years ago when its first plant was setup in Bhopal ushering in the indigenous Heavy Electrical Equipment Industry in India. A dream which has been more than realized with a well recognized track record of performance it has been earning profits continuously since 1971-72 and achieved a turnover of Rs 2,658 crore for the year 2007-08, showing a growth of 17 per cent over the previous year. Bharat Heavy Electricals Limited is country’s ‘Navratna’ company and has earned its place among very prestigious national and international companies. It finds
place among the top class companies of the world for manufacture of electrical equipments. BHEL caters to core sectors of the Indian Economy viz., Power Generation's & Transmission, Industry, Transportation, Telecommunication, Renewable Energy, Defense, etc. BHEL has already attained ISO 9000 certification for quality management, and ISO 14001 certification for environment management and OHSAS 18001 certification for Occupational Health and Safety Management Systems. The Company
today enjoys national and international presence featuring in the “Fortune International -500” and is ranked among the top 10 companies in the world, manufacturing power generation equipment. BHEL is the only PSU among the 12 Indian companies to figure in “Forbes Asia Fabulous 50” list.
BHEL – A Brief Profile:-
BHEL is the largest engineering and manufacturing enterprise in India in the energy related infrastructure sector today. The wide network of BHEL's 14 manufacturing division, four power Sector regional centers, over 150 project sites, eight service centers and 18 regional offices, enables the Company to promptly serve its customers and provide them with suitable products, systems and services – efficiently and at competitive prices. While the company contributes more than 75% of the national grid, interestingly a share of 45% comes from its single unit. And this is none other than BHEL-Hardwar.
BHEL – An Overview:-
BHEL today is the largest Engineering Enterprise of its kind in India with
excellent track record of performance, making profits continuously since 1971-72.
BHEL's vision is to become a world-class engineering enterprise, committed to
enhancing stakeholder value. The company is striving to give shape to its aspirations and fulfill the expectations of the country to become a global player.
POWER SECTOR –
Power generation sector comprises thermal, gas, hydro and nuclear power plant business. BHEL supplied utility sets accounts to 87,646 MW 65% of the total installed capacity of 1,38,175 MW in the country , as against nil in 1969 -70.
As part of India’s largest Solar Power-based Island Electrification Project in India, Bharat Heavy Electricals Limited (BHEL) has successfully commissioned two Grid-Interactive Solar Power Plants of 100 KW each in Lakshadweep.
Rotor shaft:
The cylindrical rotor with non-salient pole forms one of the most important part of the turbo-generator, which is loaded to the maximum limit of mechanical strength of the material as well as heat transfer capability. Due to the high speed of rotation high mechanical centrifugal stresses are encountered in the rotor teeth as well as in the rotor retaining ring. These mechanical forces are varying in nature and due to unequal moment of inertia across the two axis cause the vibration in the machine. The rotor is machined from a solid alloy steel single piece forging with high mechanical properties.
HYDROGEN COOLING SYSTEM:-
Hydrogen is used as a cooling medium in large capacity generator in views of highest carrying capacity and low density. Also in order to prevent hydrogen from generators, casing and sealing system is used to provide oil sealing. The system is capable of performing following system:-
• Filing in and purging of hydrogen safely without bringing in contact with air.
• Maintaining the gas pressure inside the machine at desired value at all times.
CONCLUSION:
The Vocational training at Bhel Haridwar helped me in improving my practical knowledge and awareness regarding Turbo Generator to a large extent.
Here I came to know about the technology and material used in manufacturing of turbo generators. Besides this, I also visualized the parts involved or equipment used in the power generation.
Here I learnt about how the electrical equipment are being manufactured and how they tackle the various problems under different circumstances. At least I could say that the training at BHEL Haridwar is great experience for me and it really helped me in making or developing my knowledge about turbo generator and other equipment used in power generation.