Analysis of Changes in the Thermophysical Parameters of the Gas Turbine Unit Working Fluid Depending on the Fuel Gas Composition

Marin, George; Mendeleev, D. I.; Akhmetshin, Azat

doi:10.1109/fareastcon.2019.8934021

Cited by 16 publications

(3 citation statements)

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“…The erosion wear of the rotor blade mainly appears near the leading and trailing edges, and the erosion wear of the leading edge is more serious than that of the trailing edge. (5) The static strength analysis of the gas turbine indicates that the maximum equivalent stress of the blade is 470, 459, 472, and 454 MPa, respectively, under the no-load, rated flow rate, large flow rate, and small flow rate conditions. The corresponding maximum stress values of the disc under those conditions are 637, 643, 644, and 640 MPa.…”

Section: Discussionmentioning

confidence: 99%

“…Gas turbines generally operate at a high speed of 6000-7000 r/min at 600-700 • C and approximately 0.2 MPa for an extended period of time. Given poor catalyst separation effect, a considerable number of catalyst particles become attached to the fume [4], thereby causing serious erosion of the rotor blades [5][6][7]. The erosion wear of gas turbine blades is a typical gas-solid erosion wear [8].…”

Section: Introductionmentioning

confidence: 99%

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Simulation Study on the Effect of Flue Gas on Flow Field and Rotor Stress in Gas Turbines

et al. 2021

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A flue gas turbine is the main energy recovery equipment in a heavy oil catalytic cracking unit. Blade erosion and fracture are the main reasons for gas turbine failure. In this study, the characteristics of the flow field and rotor stress in the gas turbine under different fume volumes are simulated and analyzed by simulation software (ANSYS). The influences of fume volume on the high-temperature fume flow field, temperature, velocity, catalyst particle movement rotor stress in the gas turbine, as well as the influence law of flue gas flow on temperature gradient, pressure gradient, velocity distribution, and the main position of blade erosion were studied. The stress distribution and maximum stress position of the impeller were also determined. It was found that the variation trends of the pressure gradient in the calculation domain of the gas turbine under different fume volumes are similar. The pressure on the working face of the rotor blade decreases gradually along the flow direction of the high-temperature fume. The highest pressure appears near the sharp corner with the large radius of the front edge of the rotor blade. The variation of the fume flow rate has little influence on the temperature field of the entire machine. The erosion wear of the rotor blade mainly occurs in the leading edge and tail. The maximum stress point of the blade is located at the large fillet of the first pair of tenon teeth. The maximum stress point of the disc is located at the large fillet of the third pair of tenon teeth. It is believed that these research results have reference help for analyzing the typical failure causes of flue gas turbine, optimizing the actual operating conditions and the reconstruction design of flue gas turbine.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation Study on the Effect of Flue Gas on Flow Field and Rotor Stress in Gas Turbines

et al. 2021

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“…В этом случае необходимо учитывать различие термодинамических свойств рабочих тел и влияние их на процесс горения. [1][2][3][4][5] Материалы и методы Состав природного газа может не изменяться из-за источника его месторождения, но может изменяться с течением времени [6][7][8]…”

Section: Introductionunclassified