The T-100-12.8 family of cogeneration steam turbines: Yesterday, today, and tomorrow

The T-100-12.8 turbine and its versions, a type of cogeneration steam turbines that is among best known, unique, and most widely used ones in Russia and abroad, are considered. A list of turbine design versions and quantities in which they were produced, their technical and economic indicators, design features, schematic solutions used in different design versions, and a list of solutions available in a comprehensive portfolio offered for modernizing type T-100-12.8 turbines are presented. Information about amounts in which turbines of the last version are supplied currently and supposed to be supplied soon is given. © 2013 Pleiades Publishing, Ltd

Steam turbines produced by the Ural Turbine Works for combined-cycle plants

The most interesting and innovative solutions adopted in the projects of steam turbines for combined-cycle plants with capacities from 115 to 900 MW are pointed out. The development of some ideas and components from the first projects to subsequent ones is shown. © 2013 Pleiades Publishing, Ltd

Calculation of thermal displacements for selecting gaps in the flow path of a T-40/50-8.8 turbine

The temperature fields and distributions of thermal displacements of the rotor and stator of a T-40/50-8.8 turbine are calculated for selecting the axial erection and working gaps between the diaphragm and rotor in each turbine stage in designing the flow path of this turbine and drawing up its theoretical drawing. © Pleiades Publishing, Inc., 2012

Steam turbines of the T-50/60-8.8, K-63-8.8, and Tp-100/110-8.8 types destined for modernization of thermal power plants with K-50-90 and K-100-90 turbines

This paper describes the design, schemes of regulation, and control and protection of steam tur- bines of the T-50/60-8.8, K-63-8.8, and Tp-100/110-8.8 types destined for modernization of thermal power plants with replacement of K-50-90 and K-100-90 turbines that have very low efficiency and exhausted not only their designed, but also fleet life. The replacement proposed is based on state-of-the-art engineering solutions and will be carried out at concrete thermal power plants and CHP plants. © Pleiades Publishing, Inc., 2012

Retrofitting parts and assemblies of cogeneration steam turbines for improving their reliability

Typical flaws in cogeneration turbines produced by the Ural Turbine Works that revealed them- selves under different conditions of their operation and due to which turbine failures occurred are deter- mined. Generalized results obtained from investigations and approbation of a number of newly developed measures aimed at improving the reliability of the assemblies most susceptible to damages that were imple- mented in retrofitting or repairing cogeneration turbines are presented. © Pleiades Publishing, Inc., 2012

The cogeneration steam turbine of the tp-35/40-8.8 type

The main performance characteristics of the turbine, descriptions of the electrohydraulic control and protection system (EHCPS), the heat flow diagram, arrangement decisions, and motivation for selecting them, are given. The steam turbine presented by the Ural Turbine Works (UTW) is intended for replacing the VPT-25 turbine the service life of which has already expired at the Novokuybyshevsk CHP plant. The mixed- pressure turbine will operate in combination of the double-circuit heat recovery boiler (HRB) in a parallel scheme. High-pressure (HP) steam will be supplied from the main steam header to which high-pressure steam from the power boilers and the HRB will be fed, while low-pressure (LP) steam will be supplied directly from the HRB. For the turbine, nozzle steam distribution and the two-row control stage are adopted. The tur- bine has a process steam extraction line with its stop and control valve and heating steam extraction line lead- ing to the main steam collector. © Pleiades Publishing, Inc., 2012

The cogeneration steam turbine of the T-40/50-8.8 type for the combined cycle power plant PGU-115

This paper describes the design of the steam turbine intended for a single-unit two-shaft com-bined-cycle plant and its main systems, the heat flow diagram, and turbine plant arrangement. The turbine should operate as part of the combined-cycle power plant that will be constructed on the basis of the modern PG6111FA gas turbine manufactured in the USA. © Pleiades Publishing, Inc., 2012

The cogeneration steam turbine of the T-63/76-8.8 type for a series of PGU-300 combined cycle power plants

This paper describes in detail the design of the T-63/76-8.8 steam turbine manufactured by Ural Turbine Works (refurbished significantly), its electrohydraulic control and protection system made according to the current requirements on control and protection, the heat flow diagram, and arrangement of the tur- bine. The T-63/76-8.8 steam turbine is intended to be used in double-shaft double-circuit combined-cycle monoblocks at a number of thermal power plants currently under construction. The turbine has a great future, since it may be employed in various combinations with gas turbine units having the output of 150-170 MW that are manufactured by virtually all firms. © Pleiades Publishing, Inc., 2012