10.14489/td.2017.11.pp.012-018

2017, 11 November

DOI: 10.14489/td.2017.11.pp.012-018

Balitsky F. Ya., Zhukov R. V., Grib V. V., Sokolova A. G.
ROOT CAUSES DIAGNOSIS OF SGT-500 GAS TURBINE ENGINE HIGH LEVEL VIBRATIONS UNDER MEASURING DATA INCOMPLETENESS
(pp. 12-18)

Abstract. SGT-500 gas turbine engine (GTE) condition monitoring challenges are analyzed in the paper. The vibrations were measured under two operation modes with active power 7 MWt and 8,4 MWt that is about 50 % the power rating (100 % was unavailable due to severe vibrations) to learn the unit power consumption and rotation speed influence on its vibration spectral components and thus to get some useful diagnostic information. Frequency analysis of bearing support vibrations picked up by the regular monitoring system as well as analysis of additionally measured case vibrations have discovered significant developments of nonlinear features of the GTE as an oscillatory system. There is shown since HPC (high pressure compressor) rotation frequencies dominate in vibration spectra, specific modulation effects and self-excited vibration with subsynchronous frequencies show its worth, so the most probable diagnosis is severe HPC blades and vanes damages.

Keywords: vibration diagnostics, gas turbine, high pressure compressor, nonlinear and self-excited vibrations, combinational frequencies.

+ - About the Authors Click to collapse

F. Yа. Balitsky (Federal Budget-Funded Research Institute for Machine Science named after A. A. Blagonravov of Russian Academy of Sciences, Moscow, Russia; Joint Stock Company “Scientific Education Center “Kachestvo”, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
R. V. Zhukov (Limited Liability Company “Spectrum Engineering”, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
V. V. Grib (Moscow Automobile and Road Construction State Technical University, Moscow, Russia)
A. G. Sokolova (Federal Budget-Funded Research Institute for Machine Science named after A. A. Blagonravov of Russian Academy of Sciences, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Klyuev V.V. (Ed.), Balitskii F. Ia., Barkov A. V., Barkova N. A. et al. (2006). Nondestructive testing: handbook. In 8 volumes. Volume 7. Book 2. Vibrodiagnostics. (pp. 637-638). 2nd Ed. (Revised and supplemented), Moscow: Mashinostroenie. [in Russian language].

+ - Purchase digital version of a single article Click to collapse

This article is available in electronic format (PDF).

The cost of a single article is 350 rubles. (including VAT 18%). After you place an order within a few days, you will receive following documents to your specified e-mail: account on payment and receipt to pay in the bank.

After depositing your payment on our bank account we send you file of the article by e-mail.

To order articles please fill out the form below: