FIELD OF INVENTION
The present invention relates to a fixture for safe road transport of High
Pressure (HP) turbine of 250MW steam turbine.
BACKGROUND OF THE INVENTION
HP Turbine is the key component of the Thermal Power Plant operating
with 250MW steam turbine. The HP Turbine has a weight of about 56 Tons and
dimensions of 4.1 m x 3.0 m x 2.4 m.
The transportation of HP Turbines of 250MW steam turbine module with
such dimensions poses problems due to possibility of toppling and damage
during road transportation. The existing transportation fixture design was found
to be unsafe from strength point of view for carrying the HP turbine of 250 MW
module. Hence, there was a need to design a new fixture for safe transportation
of HP turbine of 250 MW capacity modules.
OBJECTS OF THE INVENTION
Therefore, it is an object of the invention to propose a fixture for safe
road transport of high pressure turbine of 250MW steam turbine which is capable
of safe handling and road transport of high pressure turbine of said capacity.
Another object of the invention is to propose a fixture for safe road
transport of high pressure turbine of 250MW steam turbine which ensures
dimensional fitment of the turbine in the fixture for safe road transport.
A further object of the invention is to propose a fixture for safe road
transport of high pressure turbine of 250MW steam turbine which can provide
facility of seating arrangement of HP turbine for better stability and rigidity
during road transport.

A still another object of the invention is to propose a fixture for safe road
transport of high pressure turbine of 250MW steam turbine which ensures
support of HP turbine at four resting points that matches with existing four
turbine leveling points having threaded holes.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Fig. 1 : Detailed drawing of the fixture for safe road transport of HP
Turbine of 250 MW Steam Turbine.
Fig. 2 : Details of cross angles used in the fixture.
Fig. 3 : Details of special bolts used in the fixture.
SUMMARY OF THE INVENTION
The device called fixture for safe road transport of HP Turbine of 250MW
Steam Turbine is designed as a fabricated steel structure. The base of the fixture
has been formed by four channels and a number of fabricated vertical channels
have been used for load transfer. The height of the package has been optimized
for better stability. Cross angles have been used for enhanced rigidly of the
structure. The fixture has a flat base formed by a number of fabricated box
channels in transverse direction connected by two longitudinal channels and a
number of fabricated vertical beams for load transfer. Already available four
turbine leveling points having threaded holes have been selected as resting
points. Special bolts have been designed to connect these resting points with the
turbine Fixture. Fixture has been designed in such a way that already available
HP Turbine bollards to be utilized for lifting and handling purpose. The design of
fixture has been developed and optimized using Finite Element Analysis
technique.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE
INVENTION
The base of the transportation package has been fabricated of two square
beams (1) using two channels for each square beam. These square beams are
connected with three channels (2) to make the base complete. Further two
channels (13) have been welded to two of the transverse channels (2) for
supporting the plywood for cushioning of the exhaust end of the HP turbine.
Four vertical 'I' beams (3) made using eight channels are fabricated to support
the turbine. To prevent the axial movement eight stiffeners (4) have been
welded with vertical 'I' beams (3) and base frame (1). To prevent the lateral
movement four cross angles (5) welded with vertical 'I' beams (3) and base
frame (1). The HP turbine is seated on four wooden blocks placed in the four
pockets fabricated on the top of the vertical channels (3). The pockets for
wooden block have been fabricated of a small base plate (12), two small vertical
plates (11) and a vertical side plate (10). Four special bolts (6) have been used
to lock the HP turbine on transportation package. Special bolts (6) having
threads at upper end are tightened with turbine leveling threaded holes. Four
small channels (7) have been welded to the vertical 'I' beams. The bottom end of
the special bolts (6) is tightened to the small channel (7) with nuts (8). The nut
is locked in the bolt with a lock pin (9).

We Claim:
1. A Fixture (F) for safe road transport of High Pressure turbine of 250MW
steam turbine comprising;
a base (B) fabricated with two square beams (1), employing two channels
for each square beam;
three channels (2) connecting the square beams (1) transversely for
making the base (B) complete;
two more channels (13) welded to the said transverse channels (2) for
supporting a plywood for cushioning of the exhaust end of the High pressure
turbine;
four vertical T beams (3) made of eight channels fabricated for
supporting the turbine;
eight stiffeners (4) welded with vertical I beams (3) and base frame (1)
for preventing the axial movement;
four cross angles (5) welded with vertical 'I' beams (3) and base frame (1)
for preventing the lateral movement. When the high pressure turbine is seated
on four wooden blocks placed in the four pockets fabricated on the top of the
vertical channels (3) wherein the pockets for wooden block being fabricated of a
small base plate (12), two small vertical plates (11) and a vertical side plate (10)
when four special bolts (6) having threads at the upper end are tightened with
turbine leveling threaded holes to lock the turbine on the fixture (F), wherein
four small channels (7) are welded to the vertical 'I' beams (3) when the bottom
end of the special bolts are tightened to the small channel(7)with nuts, the said
nuts being locked in the bolt with a lock pin (9).

ABSTRACT

A fixture (F) comprising a base (B) fabricated with two square beams (1)
when each square beams are made of two channels. Three channels (2)
connecting the square beams transversely for making the base complete. Two
more channels (13) are welded to those transverse channels (2) for supporting
the plywood for cushioning of the exhaust end of the HP turbine. Four vertical I-
beams (3) made with eight channels are fabricated to support the turbine. Eight
stiffeners (4) are welded with vertical I-beams (3) and base frame (1) for
preventing axial movement. Four cross angles (5) welded with vertical I-beams
(3) and base frame (1) for preventing lateral movement. The high pressure
turbine sits on four wooden blocks placed in the four pockets fabricated on the
top of the vertical channels (3). Four special bolts (6) are employed to lock the
HP turbine on the fixture.