Вісник № 03
Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/6960
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33 результатів
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Документ Теплообмен при охлаждении высокотемпературной поверхности диспергированной водой(НТУ "ХПИ", 2009) Переселков, Александр РомановичThe method and results of investigations of dependence between specific heat and heat temperature surface irrigation density have been presented. The influence of parameters which determine hydrodynamic conditions of surface irrigation has been investigatedДокумент К расчету напряженного состояния хвостовых соединений рабочих лопаток паровых турбин(НТУ "ХПИ", 2009) Сухинин, В. П.; Фурсова, Т. Н.The tensely-deformed state of mushroom-like tail connections of workings shoulder-blades of steam-turbines is considered, influence of force of friction is explored on distributing of tensions in the constructions of tail connections, the analysis of, numeral and experimental results of calculations is conductedДокумент 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 Учет центробежного эффекта в расчетах систем охлаждения роторов газовых турбин(НТУ "ХПИ", 2009) Тарасов, Александр Иванович; Чан Конг ШангThe flow pattern in a cavity between the revolved disk and stator of gas turbine is numerically studied. The main features of the centrifugal pressure, generated in a cavity, depending on a mass flow rate is fixed. It was shown that 1-D model for the vortex coefficient can be used for the centrifugal pressure prediction. The reasonability of the implementation of the simulation models for the centrifugal pressure in calculations of the gas turbines cooling systems is shown.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 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 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 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 Оценка эффективности работы ЦНД турбины Т-250/300-23,5 Харьковской ТЭЦ-5(НТУ "ХПИ", 2009) Слабченко, Олег Николаевич; Зайцев, М. В.; Козлоков, А. Ю.; Золотухин, А. Д.It was proposed to carry out an estimation of the steam turbines flow paths efficiency for the low pressure cylinder in general and particularly for the low pressure cylinder of the T-250/300-23,5 steam turbine taking into account inherent operation conditions. Basing on such estimation it is possible to make recommendations for flow path modernization. Efficiency estimation for the each modernized variant should be developed basing on rate of the electrical energy generation. The rate can be determined by using the integrated characteristics of the turbine stages, i.e. mass flow rate, heat drop, performance factor in varying duty that were obtained as experimentally as well in calculations.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.