Impeller and pump
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsKimihiko MITSUDA, Yuki NAKAMURA
Life of this patent
Estimating the term…
Abstract
An impeller includes: main vanes which are provided in a front stage section of a hub so as to connect an outer surface of the front stage section and an inner surface of a shroud, and are arranged at intervals in a circumferential direction of the hub, wherein the main vanes generate an oblique flow of crude oil; and splitter vanes which are provided in a rear stage section of the hub so as to be connected to an outer surface of the rear stage section, and are arranged at intervals in the circumferential direction, wherein the splitter vanes generate an axial flow of the crude oil.
Claims8
An impeller included in a pump used for pumping crude oil from underground, the impeller comprising:
- a hub which is formed in an circular shape centered on an axis, includes a rear stage section and a front stage section inclined in a direction moving closer to the axis from the rear stage section, and is rotatable around the axis;
- main vanes which are formed on the front stage section so as to be in connection with an outer surface of the front stage section, and are arranged at intervals in the circumferential direction of the hub, the main vanes generating an oblique flow of the crude oil;
- and
- splitter vanes which are formed on the rear stage section so as to be in connection with an outer surface of the rear stage section, and are arranged at intervals in the circumferential direction of the hub, to the splitter vanes generating an axial flow of the crude oil.
An impeller included in a pump used for pumping crude oil from underground, the impeller comprising:
- a hub which is formed in an circular shape centered on an axis, includes a rear stage section and a front stage section inclined in a direction moving closer to the axis from the rear stage section, and is rotatable around the axis;
- main vanes which are formed from the front stage section to the rear stage section so as to be in connection with an outer surface of the hub, and are arranged at intervals in the circumferential direction of the hub, the main vanes generating an oblique flow of the crude oil;
- and
- splitter vanes which are formed on the rear stage section so as to be in connection with an outer surface of the rear stage section, and are arranged at intervals in the circumferential direction of the hub, the splitter vanes generating an axial flow of the crude oil.
Dependencies are inferred from the claim text.