The role of the turbocharger's dynamic blades in real life operation.
The role of the turbocharger's dynamic blades in real life operation.
Turbocharger device dynamic blade in the real work, at the same time by the temperature and speed two kinds of effect, both on the blade of the effect of the natural frequency play an opposite role. That effect affects the night, will determine the blade natural frequency is increased or reduced. From this paper calculates the effectiveness of the turbine blade inherent vibration frequency can be seen, two effects on the turbine blade impact is similar, but the temperature of the impact of the night slightly, so that the blade inherent frequency slightly decreased.
Turbocharger device dynamic blade according to the working characteristics of the ground gas turbine, gas turbine from the start, the speed quickly transition from zero to working speed, so in all the resonance speed only in the working speed around the resonance speed is dangerous. The resonance margin analysis in this example is for the resonance speed. The other dangerous rotational speeds are those at a distance from the resonance speed. The resonance analysis of the turbine blades under complex divide conditions can be obtained from Figure 3.
The turbocharger moving blade is one of the important parts of the gas turbine, at high temperature and pressure, subject to centrifugal force and aerodynamic force, and vibration, erosion, oxidation and other effects, the working conditions are very harsh, is to blade failure from time to time, accounting for about 40% of gas turbine accidents, more than 40% of the losses caused also often account for about half of the gas turbine accident losses. In this sense, a gas turbine performance of black and white depends on the blade design is reasonable or not.
