| 摘要 |
<p>1471222 Centrifugal pumps SIGMA LUTIN NARODNI PODNIK 17 June 1974 [1 April 1974] 26707/74 Heading F1C In a multi-stage pump of the type in which the liquid leaving the impeller 3, Fig. 1, enters a curved vaneless stator section 5 followed by a section having guide vanes 7 which change the course of the liquid from a generally axial to a generally radial direction, the inlet angle (a, b), Fig. 5 (not shown), on the suction and pressure sides of each vane is between 5 and 30 degrees, the outlet angle (c), Fig. 4 (not shown), on the suction side is between 100 and 130 degrees and the outlet angle (d) on the pressure side is between 60 and 90 degrees.</p> |
