Keywords
stator core
coupling prism
force
power battery
measuring instrument
capacitive sensors
How to Cite
Abstract
The main results obtained in the department of electrical and magnetic measurements at the Institute of electrodynamics National Academy of Sciences of Ukraine when performing the applied research work “Creation capacitive meters of effort in tightening prisms of stator core of powerful turbogenerator” (TG) are given. It is shown that the capacitive method of measuring forces with the installation of primary transducers under tightening nuts of prisms of the stator core has advantages over other methods due to its high metrological characteristics and noise immunity. The main results of studies of elements of primary transducers of forces are described: differential and semi-differential capacitive sensors with a variable gap and a tubular force-receiving element. Sensors conversion functions are defined. An overview of the created electrical circuits of secondary converters that provide the necessary characteristics of the conversion “capacitance of the force sensor – output electrical signal” is given. The results of the creation of capacitive meter the stroke of cone disk springs in power accumulators (PA) of the pressure stabilization systems of pressing the stator core of a powerful TG are given. The force in the tightening prisms is determining with use value of the stroke of cone disk springs. The function of transformation of multyelement capacitive sensor with concentric coplanar electrodes is calculated. References 19, figures 8.
References
Alekseev B. A. Determining the status (diagnosis) of large turbogenerators. Moscow: Publishing house ENAS Novation Center , 2001. 152 p. (Rus)
Levytskyi A.S, Fedorenko G.M. Gruboj O.P. Control of a state of powerful hydro- and turbine generators with the help of capacitive measuring instruments of the parameters of mechanical defects. Kyiv: Instytut elektrodynamiky NAN Ukrainy. 2011. 242 p. (Ukr)
Golodnova O.S., Rostik G.V. On the causes of damage to the end zones of the cores of stators of turbogenerators and measures for their prevention. Energetic. 2005. No 1. Pp. 17 – 20. (Rus)
Zozulin Yu.V., Antonov O.E., Bichik V.M. and act. Creation of new types and modernization of existing turbogenerators for thermal power stations. Kharkiv, PF «Collegium» Publ. 2011. 228 p. (Ukr)
Shtorgin A.V. Technical and scientific measures to reduce a damage to stators of heavy turbogenerators caused by vibration in the end zones: Diss. ... candidate of technical sciences: 05.11.05. Kiev, 2015. 161 p. (Rus)
Livshits A. L., Kobzar K. A., Shpatenko V. S., Kuzmin V. V. Innovations in turbogenerator stator rehabilitation at site of installation. URL: https://cigreindia.org/CIGRE%20Lib/CIGRE-Paris-Session-2014-papers-Report/A1/A1_207_2014.pdf (accessed 18.05.2019).
Levytskyi A.S., Zaitsev I.O., Smyrnova A.M. Elastic sensitive element for force transducers of the effort in powerful turbogenerators stator tightening prisms core. Pratsi Instytutu elektrodynamiky Natsionalnoi Akademii Nauk Ukrainy. 2018. Vol. 49. Pp. 32 – 39. (Ukr)
Levytskyi A.S., Novik A.I., Zaitsev I.O. Capacity transducers of efforts in turbogenerator stator tightening prisms core with compensation of influence of out-of-parallelism electrodes. Pratsi Instytutu elektrodynamiky Natsionalnoi Akademii Nauk Ukrainy. 2017. Vol. 48. Pp. 126 – 132. (Rus)
Borschov P.I. Levytskyi A.S. Capacitive measurements of effort in turbogenerator stator tightening prisms core. Measuring and computing devices in technological processes. 2017. No 3. Pp. 69 – 75. (Ukr)
Levytskyi A.S., Novik A.I., Zaitsev I.O. Digital capacitive force meter in tighting prisms of core stator of generator based on the converter AD7745. Gidroenergetyka Ukrainy. 2018. No 1 – 2. Pp. 66 – 69. (Ukr)
Levytskyi A.S., Borschov P.I. Explosion-proof meter of effort in tightening prisms of core stator of generator. Gidroenergetyka Ukrainy. 2018. No 3 – 4. Pp. 39 – 41. (Ukr)
Zaitsev I.O., Levytskyi A.S. Methods of power supply of hybrid fiber optic meters for control and diagnostic parameters of hydrogenerators. Gidroenergetyka Ukrainy. 2017. No 1 – 2. Pp. 14 – 19. (Ukr)
Zaitsev I.O., Levytskyi A.S., Zhukynyi I.M., Kromplyas B.A. Information signal converter for hybrid optoelectronic displacement meters. Measuring and computing devices in technological processes. 2017. No 4. Pp. 31 – 37. (Ukr)
Levytskyi A.S., Novik A.I., Zaitsev I.O. Hybrid fiber-optic meters for control and diagnostic parameters of hydrogenerators. Gidroenergetyka Ukrainy. 2016. No 3 – 4. Pp. 32 – 33. (Ukr)
Ivanov V.V., Petrov V. N., Rostik G.V. About the method of stabilization of the density of extrusion of active steel turbogenerators. Energetic. 2009. No 8. Pp. 29 – 30. (Rus)
Jovanovska Vangelica, Mila 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. 2015. Vol. 2. Issue 2. Pp. 162 – 166.
Paspalovski Toni, Jovanovska Vangelica. Partial Replacement of the Active Steel on the Turbogenerator End Zone. Termotechnika. 2015. XLI. 1. Pp. 1 – 7.
Levytskyi A.S., Zaitsev I.O., Kobzar K. A. Measuring the stroke of cone disk springs in power accumulators of the turbogenerator stator core using a capacitive sensor. Devices and Methods of Measurements. 2018. Vol. 9. No 2. Pp. 121 – 129.
Levytskyi A.S., Zaitsev I.O., Titko V. O., Prus V.V. Power accumulators of the turbogenerator stator core with control of the stroke of cone disk springs. Problemy energoresursozberezhennia v elektrotekhnishnykh systemakh. Nauka, osvita i prtaktyka. Naukove vydannia. Kremenshuk : KrNU. 2018. No 5. Pp. 114 – 116.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2019 A.S. Levytskyi