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Силовий акумулятор для стабілізації тиску пресування осердя статора потужного турбогенератора з волоконно-оптичним вимірювачем зусиль в стяжних призмах

Ескіз

Файли

СИЛОВИЙ АКУМУЛЯТОР.pdf (733,94 KB)

Дата

2023

Автори



Назва журналу

Номер ISSN

Назва тому

Видавець

Вінницький національний технічний університет

DOI

https://doi.org/10.31649/1997-9266-2023-169-4-61-67

Анотація

The paper describes the advantages and features of using power accumulators (PA) for powerful turbogenerators (TG), in which plate spring blocks used to restore and stabilize the compression pressure of the stator core. Groups of PA installed under the clamping nuts or instead of them on the threaded ends of the clamping prisms of the core. Measuring the forces at clamping prisms by PA makes it possible to estimate the current state of the compression pressure in the core. To measure forces at clamping prisms use PA with a fiber optic sensor based on Bragg gratings proposed. The use of an optical sensor, which is a Bragg grating, ensures the efficiency of measuring forces in the clamping prism and compression pressure. Moreover, proposed measuring transducers have immunity to influence of powerful electromagnetic fields, which occur during the operation of powerful generators. According to the given design parameters of the PA and the mechanical characteristics of the plate spring block, a fiber optic force measurement sensor was developed and its characteristics were determined. The forces in the prisms measured using a dielectric tubular force-receiving element and a ring measuring elastic element connected to it by light tension. A structural diagram of a fiber-optic system with Bragg gratings for measuring forces in N clamping prisms of a powerful TG is proposed. The method of monitoring the state of the TG stator core using the PA system with a fiber-optic sensor based on Bragg gratings described. The processing of the measurement results in the clamping prisms are measured using a fiber-optic sensor based on Bragg gratings placed in the PA is carried out using an interrogator and a personal computer. The use of the device in the stabilization system makes it possible to increase the reliability and efficiency of monitoring the actual technical condition of the heart, as well as more likely to diagnose its defects with their subsequent elimination, both during its operation and during preventive and repair measures. The use of developed information and measurement tools will ultimately increase the reliability of TG and its durability.

Опис

Ключові слова

powerful turbogenerator , stator cores , compression pressure , forces in the clamping prisms , power accumulator , block of plate springs , fiber optic sensor with Bragg gratings

УДК

621.317.39; 621.317.3

Тип документа

Article

Мова

uk_UA

Є частиною

Вісник Вінницького політехнічного інституту. № 4 : 61-67.

ISSN

1997–9266
1997–9274

Бібліографічний опис

Левицький А. С. Силовий акумулятор для стабілізації тиску пресування осердя статора потужного турбогенератора з волоконно-оптичним вимірювачем зусиль в стяжних призмах [Текст] / А. С. Левицький, Є. О. Зайцев, Н. Л. Сорокіна // Вісник Вінницького політехнічного інституту. – 2023. – № 4. – С. 61-67.

URI

https://ir.lib.vntu.edu.ua/handle/123456789/42837

Зібрання

Вісник Вінницького політехнічного інституту. 2023. № 4

Схвалення

Рецензія

Доповнено

Цитується в

Список використаної літератури (11)

  1. K. Engvall, and G. Csaba, “Nordic nuclear power generator stator vibration,” Stockholm, Sweden: Energiforsk, 2019.
  2. J. A. Cook, and D. T. Allen, “Method and apparatus for measuring compressionstator core,” U.S. Patent 7.946,023 B2, 24.05.11.
  3. M. Twerdochlib, D. Edward, and E. V. Diatzikis, “Bolt tightener device for tightening a through-bolt in a generator core,” U.S. Patent 9,016,991 B2, 28.04.2015.
  4. T. Paspalovski, and V. Jovanovska, “Partial replacement of the active steel on the turbogenerator end zone,” Termotechnika, vol. 41(1), pp. 1-7, 2015. https://doi.org/10.5937/termoteh1501001P .
  5. T. Paspalovski, N. Mojsoska, N. Jovanovski, V. Jovanovska, and Z. V. Sovreski, “Replacement (reconstruction) of the active steel end zone of the turbogenerator,” in 1-st Global. Conference Proceedings, 2013, pp. 659-663. https://doi.org/10.13140/RG.2.1.2948.3047 .
  6. V. Jovanovska, and M. Arapcheska, “Increasing the power of the turbogenerator in the process of modernization in the mining and energy industry,” International Journal of Innovative Science, Engineering & Technology, vol. 2(2), pp. 162-166, 2015.
  7. L. K. Baxter, Capacitive Sensors: Design and Applications, New York: IEEE Press, 1997.
  8. W. Jin, T. K. Y. Lee, S. L. Ho, H. L. Ho, K. T. Lau, L. M. Zhou, and Y. Zhou, “Structural strain and temperature measurements using fiber bragg grating sensors,” in Guided wave optical components and devices: basics, technology, and applications, Academic Press, pp. 389-400, 2006. https://doi.org/10.1016/B978-012088481-0/50026-7 .
  9. Guide to the measurement of force. London: The institute of measurement and control, 2013.
  10. I. Zaitsev, A. Levytskyi, M. Panchik, and V. Bereznychenko, “Fiber Bragg grating-based monitoring system for large generator core clamping fault diagnosis,” In modern electrical and energy system (MEES-2021). Conference Proceedings, 2021, pp. 1-4. https://doi.org/10.1109/MEES52427.2021.9598630 .