DOI: https://doi.org/10.20998/2078-774X.2019.01.01

ANALYSIS OF THE OPPORTUNITY TO EXTEND THE OPERATION OF THE INTERMEDIATE PRESSURE ROTOR WITH CRITICAL SIZE CRACKS

Olga Yuriivna Chernousenko, Dmitro Viktorovich Rindyuk, Vitaliy Anatoliyovich Peshko

Анотація


The paper shows the validity of the re-extension of operation-time of the intermediate pressure rotor of the K-200-130-3 turbine unit number 9 of the Luhansk TPP, with taking into account the critical size of the cracks that arose during the exploitation period. It was considered the conduct and results of several studies that were aimed to analyze the possibility of extending the operation-time of the equipment after conducting grooving of different depths radial grooves in places of cracks arising. The forecast of the possibility of continuation of cracks in the grooves is also provided. For justification of the possibility of further operation of the intermediate-pressure rotor of the turbine, computational experiments were carried out. Methods of mathematical modeling were used to determine the thermal, strain-stress state and long-term strength of the investigated object. The boundary value problem of non-stationary thermal conductivity for the stationary and main launch modes of the steam turbine installation is solved. The sampling of the calculated area is based on the finite element method. The calculation of the strain-stress state of the intermediate pressure rotor is made by the joint action of temperature stresses, temperature field gradients, centrifugal forces of inertia and stresses from pressure. It has been established, that when working in semi-peak modes, it is possible to increase the residual service life-time after carrying out constructive-repair measures, namely, cutting metal surface layer of thermal grooves to the admissible value. Cutting metal of the surface layer of intermediate-pressure rotor thermal grooves of 18 mm gives an opportunity to increase the residual service life-time and extend the exploitation. Also, on a concrete example, it has been proven inexpedient to deep, more than 18 mm, cutting metal into thermal grooves.

Повний текст:

PDF

Посилання


Ministry of fuel and energy of Ukraine (2005), ND MPE Ukrai'ny. Kontrol' metalu i prodovzhennja terminu ekspluatacii' osnovnyh elementiv kotliv, turbin i truboprovodiv teplovyh elektrostancij: SOU-N MPE 40.17.401:2004 [RD of MFEU. Metal inspection and extending operating life of main components of boilers, turbines and pipelines of thermal power plants: SOU-N MPE 40.17.401:2004], Kiev, 76 p.

OOO «DTJeK» (Donbasskaja toplivno-jenergeticheskaja kompanija) [DTEK LLC (Donbass Fuel-Energy Company)] (2018), DTJeK. Integrirovannyj otchet 2017. Finansovye i nefinansovye rezul'taty [DTEK. Integrated report 2017. Financial and non-financial results], Kiev, 146 p.

Chernousenko O., Peshko V. (), “Vplyv roboty energoblokiv TES v manevrenomu rezhymi na vycherpannja resursu energetychnogo obladnannja [Influence of the Operation of the Power Units of Thermal Power Plants in the Maneuvering Mode on the Aging Rate of Power Equipment]”, Bulletin of NTU "KhPI". Series: Power and heat engineering processes and equipment, no. 10(1182), pp. 6–16, ISSN 2078-774X, doi: 10.20998/2078-774X.2016.10.01.

Chernousenko O. Yu., Antonovich A. V., Krischuk N. G., Kosmina M. N., Dolgih M. A. (2007), “Ustalostnye povrezhdenija rotorov CVD i CSD parovyh turbin K-200-130-3 na TES Ukrainy [The Lassitude Damage of Rotors CHP and CMP of Steam Turbines K-200-130 on Heat Power Station of Ukraine]”, Bulletin of NTU "KhPI". Series: Power and heat engineering processes and equipment, no. 2, pp. 77–83, ISSN 2078-774X.

(1973), TM 24.020.16-73. Turbiny parovye stacionarnye. Raschet temperaturnyh polej rotorov i cilindrov parovyh turbin metodom jelektromodelirovanija [RTM 24.020.16-73. Steam turbines stationary. Calculation of temperature fields of rotors and cylinders of steam turbines by the method of electric modeling], Ministry of Heavy Engineering, Moscow, 104 p.

(1977), Tipovaja instrukcija po pusku iz razlichnyh teplovyh sostojanij i ostanovu monobloka moshhnost'ju 200 MVt s kotlom TP-100 (dlja raboty v rezhime regulirovanija nagruzki jenergosistem) [Typical instruction for starting from various thermal states and stopping a monoblock with a power of 200 MW with a boiler TP-100 (for operation in the mode of load regulation of power systems)], SPO ORGRES, Moscow, 46 p.

Chernousenko O. Yu., Antonovich A. V., Krishchuk N. G., Dolgikh M. O (2007), “Ustalostnye povrezhdenija rotorov CVD i CSD parovyh turbin K-200-130-3 na TES Ukrainy i vlijanie na nih rekonstruktivno-remontnyh i jekspluatacionno-tehnologicheskih faktorov [Fatigue damage to the rotors of high-pressure cylinders and central modulators of steam turbines K-200-130-3 on the TEN of Ukraine and the effect on them of reconstructive repair and operational-technological factors]”, Jenergetika i jelektrifikacija [Energy and electrification], no 3, pp. 34–40.

Peshko V., Chernousenko O., Nikulenkova T., Nikulenkov A. (2016), “Comprehensive rotor service life study for high & intermediate pressure cylinders of high power steam turbines”, Propulsion and Power Research, vol. 5, iss. 4, pp. 302–309, National Laboratory for Aeronautics and Astronautics, China.

Chernousenko, O., Rindyuk D., Peshko V. (2017), “Service life-time study for automatic stop-valve of K-200-130 turbine”, Eastern-European Journal of Enterprise Technologies, vol. 5, no 8(89), pp. 39–44, ISSN 1729-3774 (print), ISSN 1729-4061(on-line)


Пристатейна бібліографія ГОСТ


1.     НД МПЕ України. Контроль металу і продовження терміну експлуатації основних елементів котлів, турбін і трубопроводів теплових електростанцій: СОУ-Н МПЕ 40.17.401:2004. Офіц. вид. Київ: ГРІФРЕ: М-во палива та енергетики України, 2005. 76 с.

2.     ООО «ДТЭК» (Донбасская топливно-энергетическая компания). ДТЭК. Интегрированный отчет 2017. Финансовые и нефинансовые результаты. Киев, 2018. 146 с.

3.     Черноусенко О. Ю., Пешко В. А. Вплив роботи енергоблоків ТЕС в маневреному режимі на вичерпання ресурсу енергетичного обладнання. Вісник НТУ «ХПІ». Серія: Енергетичні та теплотехнічні процеси й устаткування. Харків: НТУ «ХПІ», 2016. № 10(1182). С. 6–16. Бібліогр.: 7 назв. ISSN 2078-774X. doi: 10.20998/2078-774X.2016.10.01.

4.     Черноусенко О. Ю., Антонович А. В., Крищук Н. Г., Космина М. В., Долгих М. О. Усталостные повреждения роторов ЦВД и ЦСД паровых турбин К-200-130-3 на ТЕС Украины. Вісник НТУ «ХПІ». Серія: Енергетичні та теплотехнічні процеси й устаткування. Харків: НТУ «ХПІ», 2007. № 2. С. 77–83. Бібліогр.: 5 назв. ISSN 2078-774X.

5.     РТМ 24.020.16-73. Турбины паровые стационарные. Расчет температурных полей роторов и цилиндров паровых турбин методом электромоделирования. Москва: Минтяжмаш, 1973.104 с.

6.     Типовая инструкция по пуску из различных тепловых состояний и останову моноблока мощностью 200 МВт с котлом ТП-100 (для работы в режиме регулирования нагрузки энергосистем). Москва: СПО ОРГРЭС, 1977. 46 с.

7.     Черноусенко О. Ю., Антонович А. В., Крищук Н. Г., Долгих М.О. Усталостные повреждения роторов ЦВД и ЦСД паровых турбин К-200-130-3 на ТЕС Украины и влияние на них реконструктивно-ремонтных и эксплуатационно-технологических факторов. Энергетика и электрификация. 2007. № 3. С. 34–40.

8.     Peshko V., Chernousenko O., Nikulenkova T., Nikulenkov A. Comprehensive rotor service life study for high & intermediate pressure cylinders of high power steam turbines. Propulsion and Power Research. China: National Laboratory for Aeronautics and Astronautics. 2016. Vol. 5. Iss. 4. pp. 302–309.

9.     Chernousenko, O., Rindyuk D., Peshko V. Service life-time study for automatic stop-valve of K-200-130 turbine. Eastern-European Journal of Enterprise Technologies. 2017. Vol. 5. No 8(89). pp. 39–44. ISSN 1729-3774 (print), ISSN 1729-4061(on-line).