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INDUSTRIAL TURBINES
Industrial steam turbines are used for a
variety
of needs such as driving pumps, compressors, fans, generators, or for
processing steam. Across industries, requirements call for machines
that have great mechanical power as well being able to generate heat
and power.
FTM designs, manufactures, erects and
executes industrial steam turbines for all applications:
1) Backpressure turbines: in which all the steam entering the turbine
is conveyed to process at a higher than atmospheric pressure.
2) Single or double extraction and backpressure turbines: in which all
the steam entering the turbine is conveyed to process at two or three
different pressure levels.
3) Single or double-extraction condensing turbines: in which a part of
the turbine is conveyed to process at one or two different pressure
levels, while the balance steam is condensed.
4) Straight condensing turbines: in which all the steam entering the
turbine is condensed (except for the steam used for the boiler
feedwater preheating cycle).
And for all types of ratings
- From 1000 kW to 160,000 kW and over.
- For rotating speeds from 3000 to 20,000 rpm.
- For inlet steam conditions from a few bars / saturated up to 180 bars
/ 540°C.
- For direct drive or for drive through a reduction gear.
- With highly sensitive and responsive mechanical-hydraulic or
electro-hydraulic control system.
- Turbine and driven machines are shipped completely assembled on a
suitable baseplate for easy handling, shipment and positioning on
foundation.
- At customer’s request, the lubricating oil system can be
supplied as a seperate console-mounted unit manufactured in accordance
with API standards.
- Coordinated control system and electric load and process steam flow.
FTM turbines are qualified by three
features: efficiency, reliability and operation flexibility.
Efficiency:
Industrial turbines from Franco Tosi
Meccanica are
structurally simple and have symmetrical internal parts that
concentrically expand with the rotor and allow design radial clearances
to be maintained during operation. Other efficiency features include:
1) High aerodynamic efficiency blades.
2) Low pressure drop in the valves and other non-power producing parts.
3) Liberally sized exhausts and effective diffusers to minimize hood
losses.
4) Reduction in parasitic losses, through reduced velocities in the
steam chests, valves and inlet piping to increase efficiencies.
Reliability:
Our industrial turbines are subjected to
field-tests and built to withstand high stress. Some of our top
features include:
1) Tilting pad type journal bearing for high speed turbines and
self-equalizing thrust bearing.
2) Sturdily built control stages to withstand high stresses due to
partial admission operation at low loads.
3) Successfully field testes standardized components such as blades,
journal and thrust bearings, seals, valves and couplings.
Operation flexibility:
FTM steam turbines are known for their service flexibility, allowing
for quick starts and load changes. This
flexibility is due to a systematic reduction of transient thermal
stresses in the hot parts of the turbines, achieved through:
1) Top mounted steam chest with segmented nozzle chambers free to
expand relevant to casing.
2) Side mounted steam chest and separates nozzle chambers.
3) Turbine stress evaluators (TSEs) that can be supplied on request.
The TSE processes temperature values measured at proper turbine
locations, calculates critical component stresses, compares calculated
stresses with the maximum allowable values and provides the operator
with a video image of the allowable load gradients.
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