Steam Turbines
From Power Generation Equipment
More than 2150 steam turbines with the total capacity of 250 GW have been produced altogether. The steam turbines made by LMZ are under operation in 45 countries of the world. The steam turbines made by KTZ are under operation in 43 countries of the world. The first steam turbine manufactured by LMZ was put into operation in 1907.
Product Range
Nowadays Power Machines design, produce and supply:
Steam turbines of high and medium capacity made by lmz:
- 40–1200 mw condensing turbines
- Turbines as part of ccp
- Condensing turbines with heating steam extraction with the capacity of up to 330 mw
- Thermalclamping turbines
- Thermalclamping turbines with processing steam extraction
- Back-pressure turbines with processing and heating steam extraction
- Thermalclamping turbines with reactive blading
- Back-pressure turbines
- Steam turbines of high and medium capacity
Steam turbines of low and medium capacity made by ktz:
- Condensing turbines with air condenser
- Condensing turbines
- Condensing turbines with reducing gear
- Thermalclamping turbines with processing controlled steam extraction
- Thermalclamping turbines with processing and heating controlled steam extraction
- Thermalclamping turbines for combined cycle plants
- Back-pressure turbines without controlled steam extraction
- Back-pressure turbines with controlled processing steam extraction
- Geothermal turbines
- Condensing driving turbines
- Back-pressure driving turbines
Major Advantages
High economical efficiency and reliability
Long-term experience of turbine operation, allows us to guarantee their operability for more than 40 years and the period between repairs of 6 years at least.
High economical efficiency and reliability of OJSC Power Machines’s steam turbines are ensured by:
- aerodynamics pilot tests of blades which confirm both their reliability and efficiency;
- smooth meridial outlines of the flow part;
- check of the blades’ structures by CFD methods;
- 3D profiling of the stationary blades;
- optimization of steam inlets, extractions and exhausts by CFD methods;
- new improved design of seals;
- implementation of modern advanced design methods as well as of technologies and equipment of the leading world and Russian producers.
NPP high-speed turbines with the capacity of 800–1200 MW are noted for a number of design features improving their reliability and prolonging their service life:
- solid-forged rotor design, improved toughness of the new turbine sets’ foundations, their casings and supports;
- double-flow design of cylinders and their layout facilitate unloading of the axial bearing;
- new design of the journal bearing with increased load-bearing capacity.
Close cooperation with our clients and constant improvement of the manufactured equipment on the basis of long-term experience in the development, mounting and operation of more than 3000 units give us the possibility to confidently give warranty for full design life time of Kaluga’s turbines - 40 years and the period between repairs of 6 years at least.
Kaluga’s turbo-installation has multiple distnctive features, specific to its design:
- turbine casings are noted for horizontal joint facilitating assembly, installation and repair;
- front journal-thrust bearing is integrated with the main oil pump with the said pump impeller (which is made together with the turbine shaft) being the collar of the journal-thrust bearing at the same time;
- prior to setting on the shaft the rotor disks are preprocessed – autofrettaged, it allows for the interference increase without the tension increase at the disk mounting boring. The disks have no hubs which provides for significant decrease of the rotor axial dimensions and consequently that of the total turbine dimensions without reliability deterioration. The shaft has the regular diameter which provides for the transfer of the diaphragm seals directly to the shaft and thus reduces steam leakages at the stages;
- steam distribution of medium and low pressure in the condensing turbines is performed with the help of a revolving diaphragm with relevant servomotors being its operating member and industrial and heat extraction regulators being its command element;
- regulation system is a single-pump, hydrodynamic one. It is noted for high reliability and stability and is designed to receive electrical control and correcting signals.
Loss reduction
Loss reduction is achieved due to highly efficient blading, advanced seal types, developed moisture removal in the LP flow part structure as well as due to the developed system of regenerative heaters.
Loss reduction is provided by long years of studies to increase economical efficiency of flow parts, intake and exhaust ducts including those for wet steam operation (efficiency factor up to 85–87%) and by loss minimization in heat circuits of the turbine plants. The circuits provide for the plant operability even in case separate elements fail.
Moving blades
Moving blades of all stages are produced with integral milled shrouds thus providing for the improvement of reliability and performance characteristics of the stages. The Power Machines’ experts have developed and implemented new types of high-performance seals which allow for the decrease of moving blades’ peripheral clearance and ensure leakage reduction. Implementation of the said seals at NPP turbines allowed for the improvement of their economical efficiency and handleability, dramatically decrease of the blade set erosive damage and prevention of hot steam from entering the rotors’ supporting elements.
Auxiliary Equipment
A delivery set includes:
- condensers;
- oil coolers;
- SSC (sealing steam condenser);
- check valves at steam extractions;
- filters, etc.
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