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Документ Точка появления привтулочного отрыва за направляющим аппаратом турбинной ступени(НТУ "ХПИ", 2009) Голощапов, Владимир Николаевич; Касилов, Виктор Иосифович; Козлоков, А. Ю.The estimation of the hub flow separation point behind the turbine nozzle cascade is proposedДокумент Математическая модель течения двухфазного потока в каплеуловителях контактных аппаратов(НТУ "ХПИ", 2009) Братута, Эдуард Георгиевич; Боровок, С. В.The mathematical model of current drop moisture environments in dropcatcher contact devices, as a theoretical basis for the further increase efficiency of process separation is considered.Документ Динамика переменной массы вихревых течений(НТУ "ХПИ", 2009) Гапон, Галина АлександровнаThe mathematical model of the variable mass’ vortical motion is created according to the variable mass concept in the continuous medium. The equations for vortex in the case of the variable mass continuous medium motion are derived for the first time. These equations are analogs and generalizations of the Gromeka – Lamb and Fridman equations in case of variable mass motion. The model can be applied for statement of the problem of vortical motion calculation, when fluid flow rate is changing along the channel. Variable fluid flow rate can be caused by the working medium masses attachment and detachment, which take place in steam and gas turbines, scroll cases of centrifugal turbines [1], etc.Документ Моделирование воздухозаборного тракта ГТЭ-110 Ивановской ГРЭС в программном комплексе FlowVision(НТУ "ХПИ", 2009) Михайлов, В. Е.; Страшников, А. А.; Севастьянова, Т. В.Possibilities of use of program complex FlowVision for modelling intake duct GTE-110 Ivanovo power station are shown. The created model is used for imitation of work intake duct from filter house to a snail of compressor. There was made the analysis of losses a total pressure and their comparison with results of experiment, and also calculation of uniformity velocities field in the compressorДокумент Интегрирование процедуры создания и расчета схем ГТУ в САПР "Турбоагрегат"(НТУ "ХПИ", 2009) Бойко, Анатолий Владимирович; Говорущенко, Юрий Николаевич; Усатый, Александр Павлович; Руденко, Алексей СергеевичОписані особливості інтегрування нових компонент до САПР "Турбоагрегат". Виконано інтегрування процедури створення та розрахунку схем ГТУ до САПР. Для перевірки працездатності зазначеної процедури проведені розрахунки та оптимізація параметрів циклу ГТ-750-6М. Наведені результати розрахунків та оптимізації.Документ Оценка виброактивности компрессорной установки передвижной компрессорной станции(НТУ "ХПИ", 2009) Гапонов, Владимир Степанович; Мац, В. И.; Наумов, Александр ИвановичThe question of estimation of vibroactivity of turning vibrations is examined in the system engine-compressor of low pressure in the options of the movable compressor stations. It is revable that for such sort of the systems, possessing muffs with toroid-shape shell, possessing high pliability, the task is taken to the decision of the dynamic systems with multifrequency excitation.Документ Численный анализ влияния соотношения чисел лопаток статора и ротора на нестационарные нагрузки и режимы колебаний лопаток(НТУ "ХПИ", 2009) Гнесин, Виталий Исаевич; Колодяжная, Любовь ВладимировнаUsing the numerical method for calculation of coupled problem of unsteady aerodynamics and elastic blade oscillations there performed the numerical analysis for influence of stator-rotor blade number ratio on aeroelastic blade row characteristics. There shown that choice of optimal blade number ratio allows to reduce critically the unsteady loads acting on the rotor blades, and the amplitudes of blade oscillations.Документ Газотурбинная установка ГТЭ-115М(НТУ "ХПИ", 2009) Акерман, Д. Ш.; Зарубин, Л. А.; Решитько, В. П.; Росинская, А. В.In the article there are given technical characteristics of the enhanced GTE-115M gas turbine unit and some of its separate systems. The design of the 18-stage axial-flow air compressor is performed in collaboration with the specialists of N.Ye. Jukovsky Aerospace National University «KhAI», design of the cooling system of the turbine 1st stage guide blade and cooling system of the turbine rotor – in collaboration with the specialists of National Technical University «KhPI». There is developed the design of an assembly turbine rotor, shaft-line, turbine casing, combustion chamber, turbine 1st stage guide blade and longitudinal section.Документ Паровые турбины ОАО "Турбоатом" для тепловых электростанций(НТУ "ХПИ", 2009) Субботин, В. Г.; Левченко, Евгений Владимирович; Швецов, В. Л.There are presented the stages of the JSC «Turboatom» progress during the manufacture of the new series turbines and modernization and repair of the turbine-generator sets produced earlier. The mentioned refurbishing and repair allow sustaining the effectiveness, reliability and maneuverability of the Kharkov turbine plants up to the best world samples. There are considered the turbine types manufactured by the works, there are described the structural and operating features.Документ Обратная задача теории решеток на осесимметричной поверхности тока(НТУ "ХПИ", 2009) Субботович, Валерий Петрович; Юдин, Александр Юрьевич; Фан, Конг ТамThe inverse problem about the three-dimensional flow in the blade channel on the surface which is the general surface of revolution was researched. The problem is researched as the one that consists of the independent problems of the flow’s calculation in the separated cross-section of the stream filament. These independent problems can be solved either one after another or simultaneously. The inverse problem allows to obtain a geometrical characteristics of blade profiles when limitations of aerodynamic and geometrical parametersДокумент Щодо використання наближеного розрахунку температурного поля стрижня, що закріплений з одного кінця(НТУ "ХПІ", 2009) Пустовалов, Володимир Миколайович; Чижев, Д. А.The approximate prediction of a temperature field of a bar is widely used in various areas of heat engineering. In the paper, the error estimation caused by using of simplifying assumption is putting forward.Документ Возможности повышения эксплуатационных показателей турбоустановок для ТЭС и АЭС ОАО "Турбоатом" на основе математического моделирования(Национальный технический университет "Харьковский политехнический институт", 2009) Шубенко, Александр Леонидович; Лыхвар, Н. В.; Швецов, Виктор ЛеонидовичThe issues of transfer from standard methodic for remedial maintenance and replacement of TPP and NPP steam turbine plants (STP) to «on-condition» maintenance and repair of power generating equipment have been considered. Such transfer is impossible if STP diagnostic techniques and means are not put to use. We offer a new approach to solution of the problem of STP condition diagnosis by thermodynamic parameters which is based on application of comprehensive, flexible and adapted mathematical model for the purpose of determination of basic values of the diagnosed factors.Документ Анализ особенностей состояния высокотемпературных роторов и факторов, влияющих на их работоспособность и ресурс(НТУ "ХПИ", 2009) Пугачева, Татьяна НиколаевнаThe issues has been treated connected of determination of residual resource of service of high temperature knots of turbine. Factors determining duration of reliable exploitation of turbine are analysed: exhausting of the protracted plasticity from the creep of material; accumulation of damages in the critical areas of rotors because of a cyclical fatigue.Документ Исследование динамики гидравлического сопротивления конденсаторов в системах технического диагностирования(НТУ "ХПИ", 2009) Шелепов, И. Г.; Сафронюк, М. А.Diagnostics of vacuum in condensers in the course of electric power generation is one of actual tasks during power units maintenance. The possibility of the technical diagnostics perfection of the current vacuum of a condenser due to the more precise definition of the thermal resistance value is proposedДокумент Влияние вакуума за последней ступенью на пространственную структуру потока в проточной части паровой турбины(НТУ "ХПИ", 2009) Голощапов, Владимир Николаевич; Пащенко, Н. В.; Русанов, А. В.The results of numeral research of spatial structure of 3D viscous flow through the last stage of the low-pressure cylinder of 200 MW steam-turbine on the nominal regime and regimes with flow separation phenomena are presented. Research is carried out using the software FlowER. The results of calculations are compared with the experimental data. Numeral results and experimental data are in the good agreement.Документ Оптимизация ступеней газовых турбин с использованием 3D моделей расчета течения(НТУ "ХПИ", 2009) Яковлев, В. А.; Ершов, Сергей ВладимировичThe approach of aerodynamic optimisation of a turbine blade 3D shape using the 3D flow computation model is described. The optimisation technique consists in direct methods of a local search and heuristic ones of a global search as well as their hybridisation. Results of the optimisation studies are presented for the gas turbine flowpath. The computational results demonstrate improved flow behaviour, reduced kinetic energy losses and increased turbine efficiency.Документ Эффективный численный метод определения динамических характеристик трубчатых теплообменных аппаратов(НТУ "ХПИ", 2009) Шевелев, Александр Александрович; Тарасенко, Александр НиколаевичIn the basis of modification of non-obvious method of hurrying account the method of calculation of unstationary processes of tubular heat-exchange vehicles is developed with cross motion of heat-carrying agent. The results of researches of dynamic descriptions of tubular air heater industrial boiler, got on the developed method, are presented in the article. Results showed that in the transitional processes of air heater and the transporting delay and curves of acceleration is absent is determined only heat-exchange and heat capacity of pipes of vehicle and heat-carrying agent.Документ Анализ теплообмена при струйном охлаждении входной кромки лопатки газовой турбины(НТУ "ХПИ", 2009) Тарасов, Александр Иванович; Долгов, А. И.The numeral analysis of the flow and heat transfer under jet cooling in area of leading edge of the gas turbine blade is studied. The average heat transfer coefficients are calculated for the leading edge surface for the different flow regimes, jets, and fins on the wall. Basing on these data, the known heat transfer equations were analyzed. One of the equations was approved for using in the nozzle vanes or blades cooling system calculationsДокумент Электрогидравлические системы регулирования паровых турбин ОАО "Турбоатом"(НТУ "ХПИ", 2009) Субботин, В. Г.; Бураков, А. С.; Рохленко, В. Ю.; Швецов, В. Л.There have been considered the various variants for the performance of the hydraulic part of the electrohydraulic control systems of the steam turbines. Based on the experience of the operation there have been shown their advantages and disadvantages and formed the instructions for their application.Документ Розрахункове дослідження лопатевих систем робочих коліс здвоєного капсульного прямоточного гідроагрегату(НТУ "ХПІ", 2009) Потетенко, Олег Васильович; Крупа, Євгеній Сергійович; Дранковський, Віктор ЕдуардовичIn this work the results of numeral research of flow of liquid are presented in running part of the dual hydrounit of capsule type. With the use of the program for the calculation of a bidimentional flows kinematics descriptions of drivings wheels are expected and balances of losses of energy are built in their blade systems.