| 摘要 |
<p>A rotating wheel used for a direct-connection low-speed small-scale mixed-flow hydroturbine of a hydrodynamic energy-saving cooling tower, comprising an upper canopy (1), a lower ring (3) and curved vanes (2) arranged between the upper canopy (1) and the lower ring (3). The rotating wheel is characterized in that the ratio between the height h of a water inlet side (4) of the vane (2) and the diameter D1 of where corresponds to the water inlet side (4) is 0.18-0.22; the ratio between the total eight H of the vane (2) and the diameter D1 is 0.35-0.42; the ratio between a diameter D2 and the diameter D1 is 0.4-0.6, wherein the diameter D2 is of where corresponds to the intersection A of a water outlet side (5) and the lower ring (3); the ratio between a diameter D3 and the diameter D1 is 0.3-0.45, wherein the diameter D3 is of where corresponds to the intersection B of the water outlet side (5) and the upper canopy; the ratio between the diameter D4 of a draining round platform at the upper canopy (1) and the diameter D1 is 0.1-0.2, the relation between the diameter D1 and the rotating speed of a cooling fan blade is D1=n11 X â H /n. The rotating wheel has the advantages of simple structure, convenient design and installation and high energy conversion efficiency.</p> |
