Light-medium high-energy-head compressor model level with flow coefficient of 0.0097 and method for designing light-medium high-energy-head compressor model level
A flow coefficient, light medium technology, applied in the field of compressors, can solve the problems of unfavorable rotor stability, difficult product design, low type efficiency, etc., and achieve the effect of high energy head coefficient, small span and large wheel-to-hub ratio.
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[0036] see figure 1 , a light-medium high-energy head compressor model stage with a flow coefficient of 0.0097 provided by the embodiment of the present invention is suitable for the modeling design of light-medium compressor products, including impeller 1, vane diffuser 2, bend 3 and return device 4 , where the impeller 1 is located at the inlet of the model stage, a vane diffuser 2 is provided at the outlet of the impeller 1, and the return device 4 is located at the outlet of the model stage, and the vane diffuser 2 and the return device 4 are connected by a bend 3 Pass. Machine Mach number M that this model level can use u2 =0.2-0.65, flow coefficient at design point Φ 1 = 0.0097, the design point energy head coefficient τ = 0.72, the variable efficiency η under the design flow coefficient working condition at each Mach number pol =0.789, the applicable flow rate range is 0.75~1.57 of the design point. Specific performance curves such as Figures 16 to 18 shown.
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