US 7,021,890 B2 · Turbo pump

Abstract

In order to provide a high-head, large-delivery turbopump adapted for excellent suction performance and foreign matter passability by having characteristics of an inducer, axial flow vanes, and mixed flow vanes imparted together to centrifugal vanes, a progressively diameter-increased suction casing rear part has arranged therein an impeller configured with two to four rotary vanes wound around a hub, to define rotary channels having a vane outlet channel width of 26% in proportion to a vane inlet outer circumference diameter, the rotary vanes being each respectively configured as a collision-less connection of an upstream axial-flow screw part provided with an inducer part extending into a suction fluid path of a suction casing front part at a vane inlet angle of 14°, an intermediate mixed-flow screw part, and a downstream centrifugal screw part.

Claims15

Dependent claims

A turbopump in which a single impeller of an open-vane form having a total number of I (I>1) rotary vanes is disposed in a single pump casing, wherein each rotary vane comprises:

an axial flow vane part having an inducer part continuously formed thereon, the axial flow vane part being configured to generate an axial flow;
a mixed flow vane part collisionlessly connected to the axial flow vane part;
and
a centrifugal vane part collisionlessly connected to the mixed flow vane part.

1 more element

Dependencies are inferred from the claim text.

Turbo pump

Life of this patent

Turbo pump

Life of this patent

Abstract

Claims15