EP0466350A3 - Multi-stage centrifugal pumps - Google Patents

Multi-stage centrifugal pumps Download PDF

Info

Publication number
EP0466350A3
EP0466350A3 EP19910305692 EP91305692A EP0466350A3 EP 0466350 A3 EP0466350 A3 EP 0466350A3 EP 19910305692 EP19910305692 EP 19910305692 EP 91305692 A EP91305692 A EP 91305692A EP 0466350 A3 EP0466350 A3 EP 0466350A3
Authority
EP
European Patent Office
Prior art keywords
bushing
ring
casing
pin
shear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19910305692
Other versions
EP0466350A2 (en
EP0466350B1 (en
Inventor
Peter Thompson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clyde Union DB Ltd
Original Assignee
David Brown Engineering Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by David Brown Engineering Ltd filed Critical David Brown Engineering Ltd
Publication of EP0466350A2 publication Critical patent/EP0466350A2/en
Publication of EP0466350A3 publication Critical patent/EP0466350A3/en
Application granted granted Critical
Publication of EP0466350B1 publication Critical patent/EP0466350B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

A multi-stage centrifugal pump with an axially split casing (10) and a number of impellers (14) carried by a drive shaft (12) has inter-stage bushings (24) and rings (22) for sealing each side of each impeller. Each bushing (24) or ring (22) is conventionally prevented from rotating by a radial pin protruding from the lower half of the casing (10) into an axial slot in the periphery of the bushing or ring. The pin is necessarily small and is liable to shear, difficult to engage in the slot and, in cases where the bushing (24) or ring (22) is diametrically split, does not allow rotation of the lower half for its removal without lifting the shaft (12). To avoid all these disadvantages, the exposed end (37) of a tangential pin (32) fitted in the casing (10) is flush with the join face (28) of the casing and abuts against a shoulder (44) formed by a recess (38) in the periphery of the bushing (24) or ring (22). This pin (32) can be larger than the known radial pin and is subjected to compression, not shear. <IMAGE>
EP91305692A 1990-07-07 1991-06-24 Multi-stage centrifugal pumps Expired - Lifetime EP0466350B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9015047 1990-07-07
GB909015047A GB9015047D0 (en) 1990-07-07 1990-07-07 Multi-stage centrifugal pumps

Publications (3)

Publication Number Publication Date
EP0466350A2 EP0466350A2 (en) 1992-01-15
EP0466350A3 true EP0466350A3 (en) 1992-02-26
EP0466350B1 EP0466350B1 (en) 1994-06-08

Family

ID=10678810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91305692A Expired - Lifetime EP0466350B1 (en) 1990-07-07 1991-06-24 Multi-stage centrifugal pumps

Country Status (6)

Country Link
EP (1) EP0466350B1 (en)
AT (1) ATE106994T1 (en)
CA (1) CA2046465C (en)
DE (1) DE69102357T2 (en)
ES (1) ES2057773T3 (en)
GB (1) GB9015047D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0401188D0 (en) * 2004-01-21 2004-02-25 Weir Pumps Ltd Pump casing
DE102008033073B3 (en) * 2008-07-15 2009-12-03 Ruhrpumpen Gmbh Centrifugal pump, has flow channel provided between inlet and outlet, and positioning unit attached at separating wall in selectable angle distance from guiding device and accommodated in region of mold parting line
CN103291462B (en) * 2013-01-05 2015-08-05 中国航空工业集团公司西安飞机设计研究所 A kind of split type fuel pump method of discharge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB100858A (en) * 1916-03-29 1916-07-20 G & J Weir Ltd Improvements in Centrifugal or the like Pumps.
US1639279A (en) * 1923-05-16 1927-08-16 Frederick Iron And Steel Compa Wearing ring for rotary elements
US1743348A (en) * 1928-05-07 1930-01-14 Byron Jackson Pump Co Centrifugal-pump assembly
FR850685A (en) * 1938-05-21 1939-12-22 G & J Weir Improvements to rotary pumps
DE2158518B2 (en) * 1970-12-21 1980-03-27 Borg-Warner Corp., Chicago, Ill. (V.St.A.) Horizontal multistage centrifugal pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB100858A (en) * 1916-03-29 1916-07-20 G & J Weir Ltd Improvements in Centrifugal or the like Pumps.
US1639279A (en) * 1923-05-16 1927-08-16 Frederick Iron And Steel Compa Wearing ring for rotary elements
US1743348A (en) * 1928-05-07 1930-01-14 Byron Jackson Pump Co Centrifugal-pump assembly
FR850685A (en) * 1938-05-21 1939-12-22 G & J Weir Improvements to rotary pumps
DE2158518B2 (en) * 1970-12-21 1980-03-27 Borg-Warner Corp., Chicago, Ill. (V.St.A.) Horizontal multistage centrifugal pump

Also Published As

Publication number Publication date
CA2046465A1 (en) 1992-01-08
GB9015047D0 (en) 1990-08-29
DE69102357D1 (en) 1994-07-14
DE69102357T2 (en) 1995-01-19
EP0466350A2 (en) 1992-01-15
ATE106994T1 (en) 1994-06-15
EP0466350B1 (en) 1994-06-08
CA2046465C (en) 1998-09-22
ES2057773T3 (en) 1994-10-16

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