28-03-2012, 03:04 PM
BHEL
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INTRODUCTION
BHEL is the largest engineering and manufacturing enterprise in India in the energy-related/infrastructure sector, today. BHEL was established in 1964, ushering in the indigenous Heavy Electrical Equipment industry in India - a dream that has been more than realized with a well-recognized track record of performance. The company has been earning profits continuously since 1971-72 and paying dividends since 1976-77.
BHEL caters to the core sectors of the Indian Economy, viz. Power, Transmission, Industry, Transportation, Renewable Energy, Oil & Gas and Defence. The wide network of BHEL’s 15 Manufacturing Divisions, 4 Power Sector Regional Centres, 8 Service Centres, 15 Regional Offices, 4 Overseas Offices, 2 Subsidiaries and over 150 project sites spread all over India enables the Company to promptly serve its customers and provide them with suitable products, systems and services -- efficiently and at competitive prices. The high level of quality & reliability of its products is due to the emphasis on design, engineering and manufacturing to international standards by acquiring and adapting some of the best technologies from leading companies in the world, together with technologies developed in its own R&D centres.
The product profile of BHEL is very vast and includes following equipments and services:
Thermal Sets:
• Turbine generator sets along with all Auxillaries of thermal power plant of the utilities are supplied for rating of 30, 60, 110, 120, 200, 210 & 500 MW capacities.
Hydro Sets:
• Custom built conventional hydro-turbines of Kaplan, Francis and Peloton type with matching generators.
• Pump turbines with matching motor generators.
• Mini/ micro hydro sets such as horizontal tubular turbines.
• Spherical, butterfly & rotary valves and Auxillaries for hydro stations.
• Governors (Mechanical and Electro-hydraulic type), drainage and dewatering systems, compressed air systems, centralized grease lubrication system and other control and protection systems.
Equipments for Nuclear Power Plant:
• Turbines and Generators.
• Steam generators.
• Re-heaters/ separators.
• Heat exchangers & condensers.
Heat Exchangers:
• Surface condensers.
• Low pressure heaters for re-generative feed heating systems.
• High pressure heaters.
• Chimney and gland steam-condensers for all operating conditions.
• Coolers, condensers, separators and seal oil regulators, tanks, for upto 300 atm on channel sides of any material.
• Try type de-areators for TG sets.
• Steam operated air ejectors.
IInd Pressing
Attach full slots separator between two half bar with NOMEX paper and tapped with transparent film. After pressing remove the transparent film and calibrate sand etc.
Radius Milling
In slot portion, corner of bar should be cleaned by Radius Miling Machine.
The straight bar stack is formed as per overhang profile( as per design). The overhang portion is consolidated after forming.
LUG MOUNTING:
1. Stand by bars for setting of lug.
2. Set up the conductors in each row as per drawing.
3. Insert contact sleeve with the setting of plane row wise wedge then tapper wedge fix up for tightening with copper thin strip as per marking.
MAIN BRAZING:
1. Stand by bars of setting for brazing used Resistone for that area which will not braze.
2. Heating the lug joint by two inductors at 65 C use brazing alloy L Ag-15P by 4 persons.