CA2046465A1 - Multi-Stage Centrifugal Pump - Google Patents
Multi-Stage Centrifugal PumpInfo
- Publication number
- CA2046465A1 CA2046465A1 CA2046465A CA2046465A CA2046465A1 CA 2046465 A1 CA2046465 A1 CA 2046465A1 CA 2046465 A CA2046465 A CA 2046465A CA 2046465 A CA2046465 A CA 2046465A CA 2046465 A1 CA2046465 A1 CA 2046465A1
- Authority
- CA
- Canada
- Prior art keywords
- bushing
- ring
- casing
- pin
- centrifugal pump
- 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
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>
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909015047A GB9015047D0 (en) | 1990-07-07 | 1990-07-07 | Multi-stage centrifugal pumps |
GB9015047.5 | 1990-07-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2046465A1 true CA2046465A1 (en) | 1992-01-08 |
CA2046465C CA2046465C (en) | 1998-09-22 |
Family
ID=10678810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002046465A Expired - Lifetime CA2046465C (en) | 1990-07-07 | 1991-07-08 | Multi-stage centrifugal pump |
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)
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 |
Family Cites Families (5)
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 |
CA957563A (en) * | 1970-12-21 | 1974-11-12 | Carl J. Blom | Multistage pump and manufacturing method |
-
1990
- 1990-07-07 GB GB909015047A patent/GB9015047D0/en active Pending
-
1991
- 1991-06-24 AT AT91305692T patent/ATE106994T1/en not_active IP Right Cessation
- 1991-06-24 ES ES91305692T patent/ES2057773T3/en not_active Expired - Lifetime
- 1991-06-24 EP EP91305692A patent/EP0466350B1/en not_active Expired - Lifetime
- 1991-06-24 DE DE69102357T patent/DE69102357T2/en not_active Expired - Lifetime
- 1991-07-08 CA CA002046465A patent/CA2046465C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2046465C (en) | 1998-09-22 |
ATE106994T1 (en) | 1994-06-15 |
EP0466350B1 (en) | 1994-06-08 |
ES2057773T3 (en) | 1994-10-16 |
EP0466350A3 (en) | 1992-02-26 |
DE69102357D1 (en) | 1994-07-14 |
DE69102357T2 (en) | 1995-01-19 |
EP0466350A2 (en) | 1992-01-15 |
GB9015047D0 (en) | 1990-08-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |