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US 6,884,031 B2Granted
Pump assembly
AssigneeWeir Pumps Limited
InventorPaul Geoffrey Gregory
Life of this patent
Estimating the term…
Abstract
A pump assembly particularly for use in high pressure operations is disclosed, which pump assembly is a barrel casing cartridge pump assembly which includes a pump cartridge having a plurality of impeller stages, and a barrel body casing which encases a portion of the pump cartridge. The barrel casing includes a centrally located suction branch which directly feeds a first impeller stage which is located centrally of the pump cartridge. Each impeller of the pump cartridge includes an eye for receiving fluid, the arrangement being such that each eye faces towards the suction branch.
Claims83
A pump assembly comprising:
- a pump cartridge having a non-drive end and a drive end;
- and
- a barrel casing encompassing a portion of the pump cartridge between the drive end and non-drive end, said barrel casing having a suction branch and a delivery branch in fluid communication via the pump cartridge;
- wherein the suction branch extends radially from the barrel casing and is located in a central portion of the barrel casing between first and second ends of the casing.
1 more element
A pump assembly comprising:
- a pump cartridge having a non-drive end and a drive end;
- and
- a barrel casing encompassing a portion of the pump cartridge between the drive end and the non-drive end, said barrel casing having a suction branch and a delivery branch in fluid communication via the pump cartridge;
- wherein said pump cartridge comprises a plurality of pump stages, the first of said pump stages being located centrally of the barrel casing and subsequent pump stages being located on either side of the first pump stage, and wherein said suction branch is located in a central portion of the barrel casing and communicates fluid to the first pump stage when in use.
1 more element
A pump assembly comprising:
- a pump cartridge having a non-drive end and a drive end;
- and
- a barrel casing encompassing a portion of the pump cartridge between the drive end and the non-drive end, said barrel casing having a suction branch and a delivery branch in fluid communication via the pump cartridge;
- wherein said suction branch is located in a central portion of the barrel casing, between first and second ends of the casing, and the pump cartridge comprises a plurality of impellers each having an eye for receiving fluid, at least one impeller being located between the suction branch and the non-drive end of the pump cartridge and at least one impeller is located between the suction branch and the drive end of the pump cartridge, the arrangement being such that the eye of each impeller faces towards the suction branch, and the at least one impeller located between the suction branch and the non-drive end is in fluid communication with the at least one impeller located between the suction branch and the drive end via a flow guide annulus defined between the pump cartridge and the barrel casing.
1 more element
A pump assembly comprising:
- a pump cartridge having a drive end and a non-drive end;
- and
- a barrel casing encompassing a portion of the pump cartridge between the drive end and the non-drive end, said barrel casing having a suction branch and a delivery branch in fluid communication via the pump cartridge;
- wherein said suction branch is located in a central portion of the barrel casing, between first and second ends of the casing, and said delivery branch is located in an end portion of the barrel casing, between the suction branch of the barrel casing and the drive end of the pump cartridge.
1 more element
A pump assembly comprising:
- a pump cartridge having a drive end and a non-drive end;
- and
- a barrel casing encompassing a portion of the pump cartridge between the drive end and the non-drive end, said barrel casing having a suction branch and a delivery branch in fluid communication via the pump cartridge;
- wherein said pump cartridge comprises a plurality of stages, the first of said stages being located centrally of the barrel casing.
1 more element
A pump assembly comprising:
- a pump cartridge having a non-drive end and a drive end;
- and
- a barrel casing encompassing a portion of the pump cartridge between the drive end and the non-drive end, said barrel casing having a suction branch and a delivery branch in fluid communication via the pump cartridge, the suction branch being located in a central portion of the barrel casing, between first and second ends of the casing;
- wherein the pump cartridge comprises a plurality of impellers each having an eye for receiving fluid and being fitted on a shaft which extends through the pump cartridge between the drive end and the non-drive end, said shaft being associated with at least one internal product lubricated, hydrostatic bearing.
1 more element
A pump assembly comprising:
- a pump cartridge having a non-drive end and a drive end;
- and
- a barrel casing encompassing a portion of the pump cartridge between the drive end and the non-drive end, said barrel casing having a suction branch and a delivery branch in fluid communication via the pump cartridge;
- wherein said suction branch is located in a central portion of the barrel casing, between first and second ends of the casing, and the pump cartridge comprises a plurality of impellers each having an eye for receiving fluid and being disposed on either side of the suction branch, the arrangement being such that the eye of each impeller faces towards the suction branch.
1 more element
Dependencies are inferred from the claim text.