Pump with axially-elongated annular seal element between inducer and impeller
AssigneeAerojet Rocketdyne, Inc.
InventorsJeff Miller, Steven Grota
Life of this patent
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Abstract
A pump includes a shaft that is rotatable about a central axis. An inducer is mounted on the shaft and has an inducer blade and inducer shroud attached at an outer end of the inducer blade. An impeller is mounted on the shaft downstream of the inducer and has an impeller blade and an impeller shroud attached at an outer end of the impeller blade. There is an axially-elongated annular seal element disposed at an axial end of the inducer shroud that provides sealing between the inducer shroud and the impeller shroud.
Claims20
A pump comprising:
- a shaft rotatable about a central axis;
- an inducer mounted on the shaft, the inducer having an inducer blade and an inducer shroud attached at an outer end of the inducer blade;
- an impeller mounted on the shaft downstream of the inducer, the impeller having an impeller blade and an impeller shroud attached at an outer end of the impeller blade;
- an axially-elongated annular seal element disposed at an axial end of the inducer shroud providing sealing between the inducer shroud and the impeller shroud.
An inducer that is rotatable about a central axis, the inducer including a rotatable inducer blade, an inducer shroud attached at an outer end of the inducer blade, and an axially-elongated annular seal element disposed at an axial end of the inducer shroud.
A method of assembling a pump, the method comprising:
- mounting an inducer and an impeller on a shaft that is rotatable about a central axis, wherein the inducer has an inducer blade and an inducer shroud attached at an outer end of the inducer blade and the impeller has an impeller blade and an impeller shroud attached at an outer end of the impeller blade;
- and
- attaching the inducer shroud and the impeller shroud together using an axially-elongated annular seal element that provides sealing between the inducer shroud and the impeller shroud.
Dependencies are inferred from the claim text.