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Determination of axial forces in centrifugal blowers in regulating their operating regime

Journal Article · · Chem. Pet. Eng. (Engl. Transl.); (United States)
OSTI ID:5211800
The authors examine the effect, on the axial force, of the most frequently used regulation methods in centrifugal blowers: throttling at suction and supercharging, variation of the angular velocity of the rotor, and the variation of the twist of the flow using the input regulating device (IRD). The investigations were conducted on a model of a single-stage centrifugal blower of natural gas equipped with a strain gauging system for measuring the axial load in the thrust bearing. An IRD of the axial type with the central body was used in regulation by varying the twist of the flow at the inlet into the rotor. A computer was used for averaging out the experimental data and integrating in respect to the surfaces of the rotor. Formation, by means of the IRD, of positive twisting of the flow in front of the rotor results in a considerably smaller reduction of axial force, especia-ly in regimes. Throttling in both supercharging and in suction increased the axial force.
OSTI ID:
5211800
Journal Information:
Chem. Pet. Eng. (Engl. Transl.); (United States), Journal Name: Chem. Pet. Eng. (Engl. Transl.); (United States) Vol. 21:7; ISSN CPTEA
Country of Publication:
United States
Language:
English