Open impeller structure for high-speed pump
A technology for open impellers and high-speed pumps, applied to pumps, pump components, non-variable pumps, etc., can solve the problems of unsuitable balance holes for blades, large turbulence, and increased losses, and achieve balanced axial force , weaken the hump curve, weaken the effect of pressure
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[0035] The present invention will be further described in detail below in conjunction with the embodiments shown in the accompanying drawings.
[0036] 1. Specific embodiments of the open impeller for high-speed pumps according to the present invention are as follows: figure 1 with figure 2 As shown, the blades of the high-speed impeller are no longer completely straight blades, but are twisted at the inlet section, and a certain inlet angle is set
[0037] can be derived from the following formula:
[0038]
[0039] In the formula: Q--flow rate (determined by design requirements)
[0040] f 1 --Axial flow channel cross-sectional area (determined by design requirements)
[0041] n v --The volumetric efficiency of the pump (determined by the design requirements)
[0042] D. 1 --Impeller inlet diameter
[0043] δ 1 --thickness of blade
[0044] lambda 1 --The included angle between the axial surface section line and the axial surface streamline, here is taken...
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