ATE27341T1 - AXIAL THRESHOLD COMPENSATION DEVICE FOR PUMPS. - Google Patents

AXIAL THRESHOLD COMPENSATION DEVICE FOR PUMPS.

Info

Publication number
ATE27341T1
ATE27341T1 AT84101200T AT84101200T ATE27341T1 AT E27341 T1 ATE27341 T1 AT E27341T1 AT 84101200 T AT84101200 T AT 84101200T AT 84101200 T AT84101200 T AT 84101200T AT E27341 T1 ATE27341 T1 AT E27341T1
Authority
AT
Austria
Prior art keywords
thrust
thrust disc
motor
impeller
section
Prior art date
Application number
AT84101200T
Other languages
German (de)
Inventor
Masahiro Yoshioka
Hiroshi Inoue
Eiichi Hazaki
Shiro Nakadaira
Akihisa Okada
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of ATE27341T1 publication Critical patent/ATE27341T1/en

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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/041—Axial thrust balancing
    • F04D29/0416—Axial thrust balancing balancing pistons

Landscapes

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

Abstract

A thrust load reducing device of a pump unit including a pump section (P) having a main impeller (1), a motor section (M) for driving the impeller (1), a thrust disc (7) serving concurrently as an auxiliary impeller located at one end of a motor shaft (4) in the motor section (M) for supplying motor cooling water flowing in circulation to the motor section (M), and thrust bearings (10A, 10B) mounted on an inner surface of the casing (3) in positions in which they are juxtaposed against a front surface of the thrust disc (7) located on its suction side and a rear surface of the thrust disc (7) located on its discharge side, respectively. The thrust load reducing device includes a first fine gap defining member (12) located on the inner surface of the casing (3) and cooperating with an outer peripheral surface of the thrust disc (7) to define therebetween a first fine gap (G1) constituting a passage for a fluid discharged by the thrust disc (7) and returning thereto in return flow.
AT84101200T 1983-03-04 1984-02-06 AXIAL THRESHOLD COMPENSATION DEVICE FOR PUMPS. ATE27341T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58034508A JPS59160093A (en) 1983-03-04 1983-03-04 Shaft thrust load reducing device for submergible pump
EP84101200A EP0121053B1 (en) 1983-03-04 1984-02-06 Axial thrust reducing device for pumps

Publications (1)

Publication Number Publication Date
ATE27341T1 true ATE27341T1 (en) 1987-06-15

Family

ID=12416197

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84101200T ATE27341T1 (en) 1983-03-04 1984-02-06 AXIAL THRESHOLD COMPENSATION DEVICE FOR PUMPS.

Country Status (4)

Country Link
EP (1) EP0121053B1 (en)
JP (1) JPS59160093A (en)
AT (1) ATE27341T1 (en)
DE (1) DE3463824D1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6389309U (en) * 1986-11-29 1988-06-10
JPH088319Y2 (en) * 1988-07-18 1996-03-06 株式会社荏原製作所 Centrifugal pump balance disk type axial thrust balancer
DE3929750A1 (en) * 1989-03-04 1990-09-06 Klein Schanzlin & Becker Ag AXIAL DISCHARGE RELIEF DEVICE
US5340272A (en) * 1992-08-19 1994-08-23 Bw/Ip International, Inc. Multi-stage centrifugal pump incorporating a sealed thrust bearing
FI940630A7 (en) * 1994-02-11 1995-08-12 Ahlstroem Pumput Oy Centrifugal pump
US6071091A (en) * 1998-02-12 2000-06-06 Lemieux; Guy B. Integral motor/generator and pump/turbine with hydrostatic bearings
US7820761B2 (en) 1999-08-04 2010-10-26 Hybrid Plastics, Inc. Metallized nanostructured chemicals as cure promoters
US7612143B2 (en) 1999-08-04 2009-11-03 Hybrid Plastics, Inc. Metallized nanostructured chemicals alloyed into polymers
JP4119815B2 (en) * 2003-09-30 2008-07-16 三菱重工業株式会社 Compressor
JP4347173B2 (en) 2004-09-15 2009-10-21 三菱重工業株式会社 Canned motor pump
DE102006011613A1 (en) * 2006-03-14 2007-09-20 Ksb Aktiengesellschaft Centrifugal pump with axial thrust balancing device
CN103195745B (en) * 2013-04-24 2015-08-19 东风汽车公司 A kind of cooling waterpump of new-energy automobile
CN110454509A (en) * 2019-08-30 2019-11-15 福建福清核电有限公司 A pumping type bearing thrust disc
CN111998005B (en) * 2020-08-25 2022-02-18 南京工程学院 A cooling flushing structure for water lubricated thrust bearing

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB518428A (en) * 1937-10-06 1940-02-27 Sulzer Ag Improvements in or relating to rotary immersion pumps
DE922807C (en) * 1945-03-06 1955-01-24 Aeg Device to compensate for the axial thrust of multistage centrifugal pumps
FR1276208A (en) * 1960-12-14 1961-11-17 Pump without packing or stuffing box with passage of the liquid through an internal section of the inlet bearing
US3420184A (en) * 1967-05-17 1969-01-07 Julius L Englesberg Pump employing magnetic drive
GB1351826A (en) * 1971-11-29 1974-05-01 Carter Co J C Lubricating cooling and balancing of pump and motor units
JPS5825876B2 (en) * 1980-02-18 1983-05-30 株式会社日立製作所 Axial thrust balance device
JPS5788288A (en) * 1980-11-21 1982-06-02 Hitachi Ltd Internal pump

Also Published As

Publication number Publication date
EP0121053A1 (en) 1984-10-10
JPS59160093A (en) 1984-09-10
JPS626119B2 (en) 1987-02-09
EP0121053B1 (en) 1987-05-20
DE3463824D1 (en) 1987-06-25

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee