13-07-2012, 03:11 PM
HYDRAULIC TURBINES
hydrotb.pdf (Size: 2.77 MB / Downloads: 165)
Hydraulic Engineering
TOSHIBA hydraulic turbines are
designed with optimum
characteristics including better
operating efficiency, greater
power output, and reduced
cavitation damage. TOSHIBA
constantly conducts extensive
model testing to verify designs at
its modern, fully computerized
research laboratory.
TOSHIBA also has developed
various computer programs to
simulate internal hydraulic behavior
and transient phenomena.
Structural Engineering
TOSHIBA develops analytical design
procedures and computer programs
to obtain optimum design
parameters, including stress analysis
by the finite element method.
This developmental work
contributes for achievement of
automated structural drawings and
computer-aided fabricating machines.
For the proper selection of materia
TOSHIBA conducts continuous researc
on the practical application of appropria
materials to turbines with the objective o
longer operating life span.
Manufacturing Engineering
Through the application of
outstanding manufacturing
technology, TOSHIBA has produced
record-breaking high-head and
large-capacity turbines and pump
turbines. This manufacturing
technology provides TOSHIBA's
products with high performance and
high reliability with the aid of
highly computerized, large-scaled
manufacturing facilities such as
automated gas-cutting machines and
5-axis NC machines, and also
internationally qualified skilled
welders and modern welding
procedures. Such capability enables
TOSH I BA to produce various
accurately machined turbine parts
whose dimensions and shapes
completely satisfy structural designs
required and sufficiently robust
welded structures.
MANUFACTURING FACILITIES
TOSHIBA's huge Tsurumi Works, the center of
TOSHIBA's heavy machinery productions has
accumulated high-grade technology which contributes
to rationalizing production processes and improving
product reliability.
As for TOSHIBA's large machining facilities there is
a large vertical lathe which can accept a product
weighing up to 350 tons and 16 meters in diameter,
and a large horizontal-shaft lathe capable of
machining a shaft up to 4.4m in diameter, 17.5m in
length and 150 tons in weight.
TOSHIBA's Tsurumi Works is presently engaged in
the all-round production of various sizes and types of
hydroelectricity equipment supported by the world's
highest level production facility and exclusive
technology.
FRANCIS TURBINE
Francs turbines are most widely used among water
turbines and the development of the Francis turbines
in the last decade has opened up a large range of new
application possibilities for this type.
These advances, motivated by a search for maximum
profitability, have become possible as the result of
improved knowledge of the water flows in turbines
and other hydraulic phenomena.
A complete investigation and intensive research are
carried out and efforts are put forth in the
improvement of turbine performance, the selection of
suitable materials, and the construction design in
consideration of difficulties imposed by mechanical,
manufacturing, and maintenance factors at the design
stage.
TOSHIBA has already completed two of the world's
largest water turbines, for Guri PS. (Venezuela) and
for Grand Coulee No.3 PS (USA).
12