This presentation is on vocational training that I have done between 12 july to 1 august, in BHEL BHOPAL I visited all the blocks and our training was sheduled to WTM block and traction motor block.
1. DEPARTMENT OF MECHANICAL ENGINEERING
VOCATIONAL TRAINING REPORT ON ( WTM, TRACTION MOTOR ASSEMBLY,
HYDRO LAB, CNC MACHINES)
BHARAT HEAVY ELECTRICAL LIMITED BHOPAL UNIT
TENURE OF TRAINING – 12 JULY to 1 AUGUST
SUBMITTED BY : ROHIT SEN
BE (ME) 7th SEMESTER
0208ME151045
5. BHARAT HEAVY ELECTRICAL LIMITED
TYPE - State – owned enterprise
Traded as - BSE:500103
NSE:BHEL
INDUSTRY – Electrical equipments
Founded - 1964
Founder - Government of india
Headquarters – NEW DELHI
Area served - World wide
Key people - Atul sobti ( chairman&
MD)
Revenue - ₹29,474.9crore
(2017)
Operating income - ₹627.83crore
Net income - ₹495.86 crore.
Number of employees 39,821 (2017)
13. WATER TURBINE MANUFACTURING
BLOCK NO. 1
• MANUFACTURING OF FRANCIS TURBINE
• UNDER BALIMELLA PROJECT
• Water Turbine Manufacturing Block NO.1 are The Biggest Block In
BHEL Complex
• Hydro turbine and associated components are machined and
manufactured here
14. • The Francis turbine is a type of water turbine that
was developed by James B. Francis in Lowell,
Massachus It is an inward-flow reaction turbine
that combines radial and axial flow concepts.
• Francis turbines are the most common water
turbine in use today. They operate in a water head
from 40 to 600 m (130 to 2,000 ft) and are
primarily used for electrical power production. The
electric generators that most often use this type of
turbine have a power output that generally ranges
from just a few kilowatts up to 800 MW, Penstock
(input pipes) diameters are between 3 and 33 ft
(0.91 and 10 m). The speed range of the turbine is
from 75 to 1000 rpm.
15. MAJOR COMPONENTS OF FRANCIS
TURBINE
The Scroll casing.
Runner, and Runner Cone
Shaft.
Draft tube cone., Hydrogenerator shaft.
Stay vanes.
Guide vanes.
Sealing box., pivot ring
Regulating ring ,Servomotor.
Upper case and Lower case
Link and Liver
Guide bearing .
22. PARAMETERS GOVERNING
SELECTION OF FRANCIS TURBINE
SPECIFIC SPEED
AVAILABLE HEAD
ROTATIONAL SPEED
CAVITATION
EFFICIENCY
WATER QUALITY
23. 1. SPECIFIC SPEED
The specific speed of turbine is the speed of a geometrically similar turbine which would
produce unit power ( one kilowatt) under unit head ( one meter) . The specific speed of a
turbine is given by manufacturer ( along with rating ) and will always refer to the point of
maximum efficiency..
Sr.no. Types of turbine Specific speed
1. Pelton wheel with single jet 80-30
2. Pelton wheel with multiple jet 30-50
3 Francis turbine 50-250
4 Kaplan turbine 250-850
25. CAVITATION
Cavitation is formation of the
liquid bubbles in the liquid
flowing through any hydraulic
turbine. Cavitation occurs when
the static pressure of the liquid
falls below its vapour pressure .
Cavitation is most likely to occur
near the fast moving blades of
the turbine and in the exit
region of the turbine
27. PARTS MANUFACTURED FOR CURRENT PROJECT
part manufactured - forged runner
Project - AD hydro power ltd.
Wt. of the parts - 9200kg
part manufactured - main injector
Project - Tapovan Vishnugad hep
Wt of the part - 4900kg
Part manufactured - Runner hub
Projects - Pulichintala project
Wt of the part - 32000kg
Part manufactured -Runner blades
Project -parbati hep stage 3
Wt of the part - 3779kg
28. TRACTION MOTOR
MANUFACTURING BLOCK NO. 09
What is traction motor
A traction motor is an electric motor used for
propulsion of a vehicle, such as an electric
locomotive or electric roadway vehicle. Traction
motors are used in electrically powered rail vehicles
(electric multiple units) and other electric vehicles
including electric milk floats, elevators, conveyors,
and trolleybuses, as well as vehicles with electrical
transmission systems (diesel-electric, electric hybrid
vehicles), and battery electric vehicles.
35. TESTING FACILITIES
Facilities for hydraulic testing of spiral casting, inlet valves, servomotors, oil pressure units
and other units.
Governor test stand – combined tesing of electrical mechanical cabinets.
Mechanical testing facilities.
Vibration and stress analysis.
Non destructive testing facilities
Radiography
Ultrasonic
Magna flux
36. MACHINING FACILITIES
MACHINE TOOLS NO. LARGEST CAPACITY
LATHES 1 MAX Swing 4165mm, MAX, Bet centers 10668mm
CNC LATHES 2 MAX, Swing 3000mm, MAX, Bet centers 12000mm
CNC VERTICAL BORER 3 MAX Turning 10000mm, WT. of job 240T
PLANING MACHINE 4 SIZE OF JOB 9144*4038*12900mm
RADIAL DRILLING MACHINE 5 MAX, Size 2743mm
VERTICAL BORDERS 6 MAX Turning 12500mm, WT. of job 160T
39. MAJOR CNC MACHINES
MORANDO CNC LATHE MACHINE
A CNC lathe is typically designed to
utilize modern versions of carbide
tooling and processes. A part can be
designed for customization, and the
machine’s tool paths are often
programmed using the CAD or CAM
processes. The resulting coded
computer file is then uploaded to the
CNC machine, and the machine will
then automatically produce the
desired parts for which it was
programmed to design.
A CNC lathe is controlled by a menu-
type interface on a computer. The
operator who manages the process
can actually see a visual simulation of
40. SPECIFICATION OF MORANDO CNC LATHE
speed 1.5 to 200 rpm
Feed 0.5to 200 mm/min
Distance between center 6000mm
Height from center 770mm
Maximum load between center 35 ton
Swing over bed 1520mm
41. CNC ELGA MILLING MACHINE
• BUTLER ELGA MILLING CS10 BED
TYPE MILLING MACHINE
• TABLE : 3300mm*1030mm
• TRAVELS : X AXIS 2500mm,
VERTICAL 1000mm, CROSS TRAVEL
1000MM
• ISO 50 SPINDLE
• MACHINE COMES WITH 3 AXIS
DIGITAL READOUT
42. HOMMA GRINDING CNC MACHINE
FEED 0.64 TO 1700 MM
SPEED OF VERTICAL
TRAVERSE OF SPINDLE
MAIN BORING AND
MILLING SPINDLE
HIGH SPEED SPINDLE
3.5 TO 500 RPM
63 TO 2000 RPM
BORING SPINDLE TRAVERSE 3000 mm
HORIZONTAL TRAVERSE OF
COLUMN ON BED
27600mm
FULL BED LENGTH 40800mm
43. VERTICAL BORING MACHINE RUNNER BLADE TURNING
MACHINE
MAXIMUM CAPACITY 90 TONS
MAXIMUM JOB DIAMETER - 7696MM
TABLE DIAMETER - 6705MM
LENGTH OF THE JOB THAT CAN BE DONE
-7200MM
MAXIMUM DIAMETER - 8000MM
MAXIMUM LENGTH - 8000MM
44. PLASMA CUTTING CNC
MACHINE
Plasma cutting is a process that cuts through
electrically conductive materials by means of an
accelerated jet of plasma typical materials cut
with a plasma torch include steel, stainless steel,
aluminum, brass and copper etc. plasma cutting
process is accomplished by a compressed gas (
oxygen, inert gases ) which is blown through a
nozzle at high speed towards the work piece. An
electric arc is formed between electrode near the
nozzle and work piece itself then it delivers
sufficient heat to melt through the work piece
Cutting temperature - 32000*Celsius
Max thickness of the plate – 300mm
Max bed length- 7000mm
45. ELECTRO SLAG WELDING
MACHINE
Job completed in one pass only.
For job of thickness 40-110mm single
nose is used
For job of thickness greater than
110mm double nose is used
Lesser defect as compared to manual
arc welding machine
It can lay metal at a rate between 15
and 20 kg per hour
This process is very efficient material
handling is minimized since filler
material utilization is high
