Fatigue wear, erosion wear, abrasive wear, adsorption wear, these four wear centrifugal fan is the use of the main wear factors. In summary, the fatigue wear is due to surface fatigue stress (or temperature or impact) caused by surface cracks or scale shedding caused by fatigue wear. From the damaged impeller point of view, various forms of impeller wear situation and parts vary. However, the main form of wear more than the above and are all local wear and tear. Worn parts mainly in the blade face and near the rear disc. Several other wear and tear are due to the intake conditions. The following main analysis of the intake conditions centrifugal fan wear impact.

Dust, dust, boiler induced draft dust and other fans, due to airflow entrained solids caused by the fan impeller wear and tear, reduce service life, poor reliability continuous operation, has increasingly attracted engineering and academic community Pay attention. By increasing the material wear resistance or surface treatment, of course, is an effective wear-resistant measures, but the cost, process requirements increased accordingly.

Based on the motion law of gas-solid two-phase flow, the particle movement and wear mechanism are analyzed, and the particle trajectory in the fan is changed from aerodynamic point of view. Through the analysis of the gas-solid two-phase flow in the experimental centrifugal fan, the influence of changing the impeller air inlet condition on the particle movement and the impeller wear in the fan is emphatically studied. The calculation and analysis show that changing impeller inlet conditions properly can improve impeller wear state to a certain extent and improve the wear resistance of centrifugal fan without affecting the aerodynamic performance of fan.

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