Resistance Analysis on the Gap-pickup Diagonal Flow Passage in Turbine Generator Rotors

摘要

The gap-pickup diagonal flow ventilation system has been widely employed because of its short cooling channels, simple fan configuration, high reliability and efficiency. The diagonal flow passage is an important section in where heat exchanges between rotor winding and cooling gas, and it directly influences the cooling condition of the gap-pickup diagonal flow system. The resistance characteristic of the diagonal flow passage is analyzed, and the formula for the total resistance of diagonal flow passage has been obtained in this paper. The results should be helpful for the calculation of the gappickup ventilation system.