Ural Turbine Works

Yekaterinburg, Russia

Ural Turbine Works

Yekaterinburg, Russia
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Aronson K.E.,Ural Federal University | Brezgin V.I.,Ural Federal University | Brodov Y.M.,Ural Federal University | Gorodnova N.V.,Ural Federal University | And 3 more authors.
Thermal Engineering | Year: 2016

This article considers security assurance for power engineering machinery in the design and production phases. The Federal Law “On Technical Regulation” and the Customs Union Technical Regulations “On Safety of Machinery and Equipment” are analyzed in the legal, technical, and economic aspect with regard to power engineering machine industry products. From the legal standpoint, it is noted that the practical enforcement of most norms of the Law “On Technical Regulation” makes it necessary to adopt subordinate statutory instruments currently unavailable; moreover, the current level of adoption of technical regulations leaves much to be desired. The intensive integration processes observed in the Eurasian Region in recent years have made it a more pressing task to harmonize the laws of the region’s countries, including their technical regulation framework. The technical aspect of analyzing the technical regulation of the Customs Union has been appraised by the IDEF0 functional modeling method. The object of research is a steam turbine plant produced at the turbine works. When developing the described model, we considered the elaboration of safety case (SC) requirements from the standpoint of the chief designer of the turbine works as the person generally responsible for the elaboration of the SC document. The economic context relies on risk analysis and appraisal methods. In their respect, these are determined by the purposes and objectives of analysis, complexity of considered objects, availability of required data, and expertise of specialists hired to conduct the analysis. The article proposes the description of all sources of hazard and scenarios of their actualization in all production phases of machinery life cycle for safety assurance purposes. The detection of risks and hazards allows forming the list of unwanted events. It describes the sources of hazard, various risk factors, conditions for their rise and development, tentative risk appraisals, and elaboration of tentative guidelines for reducing hazard and risk levels. © 2016, Pleiades Publishing, Inc.


Ivanovskii A.A.,SOYUZ Power Construction Corporation | Kultyshev A.Y.,Ural Federal University | Stepanov M.Y.,Ural Turbine Works
Thermal Engineering (English translation of Teploenergetika) | Year: 2014

The possibilities of using back-pressure cogeneration turbines developed on the basis of serially produced ones are considered together with the thermal process circuits in which such turbines are applied. Design versions and advantages of cogeneration stations in which the proposed process circuits are implemented are described. © 2014, Pleiades Publishing, Inc.


Valamin A.E.,Ural Turbine Works | Kultyshev A.Y.,Ural Federal University | Shibaev T.L.,Ural Turbine Works | Gol'dberg A.A.,Ural Turbine Works | And 4 more authors.
Thermal Engineering | Year: 2016

The selection of a cogeneration steam turbine unit (STU) for the reconstruction of power units with a T-250/300-23.5 turbine is substantiated by the example of power unit no. 9 at the cogeneration power station no. 22 (TETs-22) of Mosenergo Company. Series T-250 steam turbines have been developed for combined heat and power generation. A total of 31 turbines were manufactured. By the end of 2015, the total operation time of prototype power units with the T-250/300-23.5 turbine exceeded 290000 hours. Considering the expiry of the service life, the decision was made that the reconstruction of the power unit at st. no. 9 of TETs-22 should be the first priority. The main issues that arose in developing this project—the customer’s requirements and the request for the reconstruction, the view on certain problems of Ural Turbine Works (UTZ) as the manufacturer of the main power unit equipment, and the opinions of other project parties—are examined. The decisions were made with account taken of the experience in operation of all Series T-250 turbines and the results of long-term discussions of pressing problems at scientific and technical councils, meetings, and negotiations. For the new power unit, the following parameters have been set: a live steam pressure of 23.5 MPa and live steam/reheat temperature of 565/565°C. Considering that the boiler equipment will be upgraded, the live steam flow is increased up to 1030 t/h. The reconstruction activities involving the replacement of the existing turbine with a new one will yield a service life of 250000 hours for turbine parts exposed to a temperature of 450°C or higher and 200000 hours for pipeline components. Hence, the decision has been made to reuse the arrangement of the existing turbine: a four-cylinder turbine unit comprising a high-pressure cylinder (HPC), two intermediate pressure cylinders (IPC-1 & 2), and a low-pressure cylinder (LPC). The flow path in the new turbine will have active blading in LPC and IPC-1. The information is also presented on the use of the existing foundations, the fact that the overall dimensions of the turbine unit compartment are not changed, the selection of the new turbine type, and the solutions adopted on the basis of this information as to LPC blading, steam admission type, issues associated with thermal displacements, etc. © 2016, Pleiades Publishing, Inc.


Valamin A.E.,Ural Turbine Works | Kultyshev A.Y.,Ural Federal University | Shibaev T.L.,Ural Turbine Works | Gol'dberg A.A.,Ural Turbine Works | Stepanov M.Y.,Ural Federal University
Thermal Engineering | Year: 2016

A T-250/300-240 turbine (currently known as T-250/300-23.5), which is operated at 31 steam turbine plants, is the largest in the world extraction turbine (by the heating extraction load) and one of the largest by the nominal capacity. All steam turbine plants equipped with T-250/300-23.5 turbines of different modifications are operated in large cities of Russia and the neighboring countries covering a significant part of the needs of cities for the electric power and almost fully supplying them with heat power. The design life of a significant part of the operated steam turbine plants of this family is either expired or almost expired. It refers to both the turbine unit (including a turbine and a generator) and the turbine plant equipment. For steam turbine plants equipped with T-250/300-23.5 turbines, which were initially designed and mounted for work with deaerators at electric power stations, the heat flow diagrams with and without a deaerator were compared. The main advantages and disadvantages of each scheme were shown. It was concluded that, for the newly constructed power units with supercritical steam parameters, it is preferable to use the heat flow diagram without a deaerator; for the upgraded blocks, if there are no objective reasons for the removal of a deaerator, it is recommended to keep the existing heat flow diagram of a turbine plant. © 2016, Pleiades Publishing, Inc.


Bilan A.V.,Ural Turbine Works | Plotnikov P.N.,Ural Federal University
Thermal Engineering | Year: 2016

Analysis of thermal stresses in tubes and a compensator, taking into account water heating in each heater bunch and temperature at which its mounting is implemented, and of stresses on pressure is presented. The 3D-model of the horizontal delivery water heater of PSG-4900-0.3-1.14 type is used. The tube plate is represented as the 3D-body with 6863 holes with offset center of the perforated area, the steam space shell is represented as a cylindrical casing, the bottoms of water chambers are considered as elliptical casings, the four-lens compensator is represented in the form of toroidal casings, and the tubes are considered as beams operating in tensile-compression and bending in two planes. Calculations were carried out for different temperatures of superheated steam and a steam space shell, respectively, as well as designs with compensator and without it. Various temperature values of the tubes on the passes were calculated and set. The studies were carried out taking into account nonaxis-symmetrical spacing the tube plate and compensator deformation. The calculation results of tensile-compression stresses in the tubes are presented. Furthermore, the central tubes experience compressive stresses, whose maximal values take place on the border between the tubes of the fourth and of the first passes. For its decrease, it is recommended to increase the distance between the tubes of these passes. The tension stresses in the peripheral tubes are the maximal stresses. To reduce the stresses and, therefore, increase service life of the delivery water heater at using wet or superheated (not more than by 30–50°C) steam in it (the larger value refers to the brass tubes and the water pressure of 1.6–2.5 MPa), it is necessary to recommend the noncompensatory design at using the steam superheated by more than 30–50°C (at Ural Turbine Works, it is the turbines of T-250/300-23.5 and T-113/145-12.4 types with intermediate superheating) and to recommend the installation of the compensator operating only at compression. © 2016, Pleiades Publishing, Inc.


Valamin A.E.,Ural Turbine Works | Kultyshev A.Y.,Ural Federal University | Shibaev T.L.,Ural Turbine Works | Gol'dberg A.A.,Ural Turbine Works | And 5 more authors.
Thermal Engineering | Year: 2016

The design, schematics, and arrangement of a T-295/335-23.5 turbine and the basic features of a steam-turbine unit (STU) intended for replacement of STUs with a T-250/300-23.5 turbine with the expired service life and installed in large cities, such as Moscow, St. Petersburg, Kiev, Minsk, and Kharkov, for heat and power generation are considered. The basic solutions for an automatic electrohydraulic control and protection system using high-pressure (HP) technology are described. As the turbine operates in a power unit together with a supercritical boiler and the design turbine service life of 250000 hours must be attained, turbine component construction materials complying with these requirements are listed. © 2016, Pleiades Publishing, Inc.


Novoselov V.B.,Ural Federal University | Shekhter M.V.,Ural Turbine Works
Thermal Engineering (English translation of Teploenergetika) | Year: 2012

A refined procedure for estimating the effect the flashing of condensate in a steam turbine's regen-erative and delivery-water heaters on the increase of rotor rotation frequency during rejection of electric load is presented. The results of calculations carried out according to the proposed procedure as applied to the delivery-water and regenerative heaters of a T-110/120-12.8 turbine are given. © Pleiades Publishing, Inc., 2012.


Gol'dberg A.A.,Ural Turbine Works | Shibaev T.L.,Ural Turbine Works
Thermal Engineering (English translation of Teploenergetika) | Year: 2014

Criteria for evaluating process-circuit and layout solutions adopted in designing steam-turbine units are presented together with their values for a number of steam-turbine units produced by the Ural Turbine Works. The presented values of the criteria are recommended for being used as tentative ones in designing new thermal power plants or in upgrading them with the use of steam turbine units operating both as basic power installations and as part of combined-cycle power plants. The influence of process-circuit and layout solutions adopted for steam-turbine units on the effectiveness of thermal power plant construction and plant performance efficiency is shown. © 2014, Pleiades Publishing, Inc.


Ioffe L.S.,Ural Turbine Works
Thermal Engineering (English translation of Teploenergetika) | Year: 2010

Technological features and the startup and operation modes of a power unit consisting of an R-type turbine and a bottom turbine connected to it are considered. © 2010 Pleiades Publishing, Ltd.


Evdokimov S.Y.,Ural Turbine Works | Yamaltdinov A.A.,Ural Turbine Works
Thermal Engineering (English translation of Teploenergetika) | Year: 2012

The main methods of repairing a high-pressure cylinder after the occurrence of deep cracks in its casing are considered. The technology of repairing the high-pressure cylinder at the Sakmar cogeneration station is described. © Pleiades Publishing, Inc., 2012.

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