Research Article
Experimental Study of Pressure Pulsation in a Mixed-Flow Pump with Different Tip Clearances Based on Wavelet Analysis
Table 1
Parameters of the mixed-flow pump model.
| | Parameters | Value |
| | Design operating point | | | Designed flow rate Qdes (m3/h) | 380 | | Designed rated head H (m) | 6 | | Rated speed n (r/min) | 1450 | | Specific speed ns | 480 | | Impeller | | | Number of impeller blades Z | 4 | | Width of the impeller b2 (mm) | 67.2 | | Inlet diameter of the impeller D1 (mm) | 185.2 | | Outlet diameter of the impeller D2 (mm) | 243.2 | | Average inlet blade angle β1 (°) | 24.9 | | Average outlet blade angle β2 (°) | 31.8 | | Tip clearance of blade t (mm) | 0.2 mm, 0.5 mm, 0.8 mm, and 1.1 mm | | Diffuser | | | Number of guide vane blades Zd | 7 | | Inlet diameter D3 (mm) | 266.6 | | Outlet diameter D4 (mm) | 281.8 | | Average inlet blade angle α3 (°) | 45.6 | | Average outlet blade angle α4 (°) | 86.5 | | Pipe system | | | Inlet diameter of the impeller Din (mm) | 200 | | Outlet diameter of the impeller Dout (mm) | 250 |
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