4. About Company
Bharat Heavy Electricals Limited (BHEL) is one of the
oldest and largest state-owned engineering and
manufacturing enterprise in India in the energy-related
and infrastructure sector
which includes Power, Railways, Transmission and
Distribution, Oil and Gas sectors and many more
It is the 7th largest power equipment manufacturer in
the world.
In the year 2011 , It ranked ninth most innovative
company in the world by US business magazine Forbes.
5. INTRODUCTION
Engaged in the
Design, Engineering,
Manufacture,
Construction, Testing,
Commissioning and
Servicing of a wide
range of products and
services.
UHV Testing Workshop
7. What is turbine ?
Turbine is a machine that converts energy of fluids
into mechanical energy.
8. HYDRO TURBINE
Hydro turbine converts energy of water into
mechanical energy and further into electrical
energy by generator. Hydro turbines are
classified on the basis of action of water on
moving blades.
9. CLASSIFICATION OF
HYDRO TURBINES
As per the action of water on
moving blades, hydro turbines are
classified as:
Impulse turbine
Reaction turbine
11. IMPULSE TURBINE
In impulse turbine, the pressure energy of water
when passed through nozzle is converted into
kinetic energy and forms the high velocity jet of
water. The formed jet is used to drive the wheel.
The casing of impulse turbine operates under
atmospheric pressure. Impulse turbine requires
high head and small quantity of flow.
13. REACTION TURBINE
The power in reaction turbine is developed from
the combined action of pressure and velocity of
water. The casing of reaction turbine operates
under high pressure. The casing of reaction
turbine is made completely leakproof.
14. Reaction Turbine
1. A Reaction Steam
Turbine utilizes a jet of
steam that flows from a
nozzle on the rotor.
2. The steam is directed
into the moving blades
by fixed blades
designed to expand the
system.
16. FRANCIS TURBINE
In francis turbine, the water enters into a
casing with a relatively low velocity,
passes through guide vanes located
around the cicumference and flows
through runner and finally discharged into
draft tube. The water passage from
headrace to tailrace is completely filled
with water.
17. FRANCIS TURBINE
Rated head is10-
300m
Rated flow is 0.3-
100m3/s
Rated speed is 68.2-
1500rpm
Rated o/p is 100KW-
100MW
19. KAPLAN TURBINE
Kaplan turbine is a propeller turbine
having movable blades instead of
fixed one. The blades of turbine are
rotated to most efficient angle by a
hydraulic servo motor. These turbines
are suitable for variable heads and
variable flows where ample quantity
of water is available.
20. KAPLAN TURBINE
Rated head is 2-70m
Rated flow is 1-200m3/s
Rated speed is 68.2-
750rpm
Rated o/p is 100KW-
100MW
21.
22. PELTON TURBINE
Pelton turbine is generally mounted on
horizontal shaft. A number of buckets are
mounted round the periphery. Water is
directed through nozzle towards buckets.
The flow of water through nozzle is
controlled by special regulating system.
For max speed of rotation, the mean
diameter of runner should be small.
23. PELTON/TURGO TURBINE
Rated head is 80-
1600m
Rated flow is 0.1-
20m3/s
Rated speed is 150-
1500rpm
Rated o/p is 100KW-
80MW
24. TURGO TURBINE
In turgo impulse turbine, a much larger jet can
be applied to runner of a given diameter. With
turgo impulse turbine, the jet is set at an angle to
face the runner, strikes the buckets at the front
and discharges at opposite side.
