Inducer with tip shroud and turbine blades
US7931441B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2008 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Feb 11, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/2277
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A two blade row inducer for a low pressure pump in a turbopump of a rocket engine. The inducer includes a first set of blades and a second set of blades or partial blades in which the partial set of blades is covered with a shroud and the shroud includes a row of turbine blades extending outward to form a turbine to drive the inducer. The first set of blades is spiral or screw thread blades that end just upstream from the leading edges of the second set of blades covered with the shroud. In another embodiment, the screw thread blades can extend toward the aft end of the inducer and in-between adjacent partial blades in which the shroud also covers the aft ends of the screw thread blades. A second fluid reacts with the turbine blades to rotate the inducer and pump the first fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.