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WO2008030630A3 - Flow restricting devices in pumps - Google Patents

Flow restricting devices in pumps Download PDF

Info

Publication number
WO2008030630A3
WO2008030630A3 PCT/US2007/061130 US2007061130W WO2008030630A3 WO 2008030630 A3 WO2008030630 A3 WO 2008030630A3 US 2007061130 W US2007061130 W US 2007061130W WO 2008030630 A3 WO2008030630 A3 WO 2008030630A3
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
flow
split ring
annulus
pumps
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.)
Ceased
Application number
PCT/US2007/061130
Other languages
French (fr)
Other versions
WO2008030630A2 (en
Inventor
David Jeffrey Janocko
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.)
Curtiss Wright Electro Mechanical Corp
Original Assignee
Curtiss Wright Electro Mechanical Corp
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 Curtiss Wright Electro Mechanical Corp filed Critical Curtiss Wright Electro Mechanical Corp
Priority to EP07853468A priority Critical patent/EP1984626A2/en
Priority to JP2008552592A priority patent/JP2009524776A/en
Publication of WO2008030630A2 publication Critical patent/WO2008030630A2/en
Anticipated expiration legal-status Critical
Publication of WO2008030630A3 publication Critical patent/WO2008030630A3/en
Ceased 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
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • 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
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sealing Devices (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

Restriction of flow along a shaft by interposing a split ring in the annulus between the shaft and housing. When the ends of the split ring are separated, the effective diameter of the ring is increased and a clearance between the ID of the split ring and the shaft is maintained permitting flow. When the ends are released and allowed to come together the split ring closes the annular gap and restricts the flow. Also contemplated is the restriction of flow along a shaft by interposing an axially movable sleeve in the annulus between the shaft and housing. Flow through the annulus between the movable sleeve and the shaft is resisted by the clearance or features such as labyrinths, to thereby create a differential pressure from one end of the sleeve to the other.
PCT/US2007/061130 2006-01-26 2007-01-26 Flow restricting devices in pumps Ceased WO2008030630A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07853468A EP1984626A2 (en) 2006-01-26 2007-01-26 Flow restricting devices in pumps
JP2008552592A JP2009524776A (en) 2006-01-26 2007-01-26 Pump flow restriction device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/340,994 US20070172367A1 (en) 2006-01-26 2006-01-26 Flow restricting devices in pumps
US11/340,994 2006-01-26

Publications (2)

Publication Number Publication Date
WO2008030630A2 WO2008030630A2 (en) 2008-03-13
WO2008030630A3 true WO2008030630A3 (en) 2008-11-27

Family

ID=38285746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/061130 Ceased WO2008030630A2 (en) 2006-01-26 2007-01-26 Flow restricting devices in pumps

Country Status (4)

Country Link
US (1) US20070172367A1 (en)
EP (1) EP1984626A2 (en)
JP (1) JP2009524776A (en)
WO (1) WO2008030630A2 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8356972B2 (en) 2008-12-10 2013-01-22 Westinghouse Electric Company Llc Thermally activated shutdown seals for rotatable shafts
US8690534B1 (en) * 2009-06-08 2014-04-08 Curtiss-Wright Electro-Mechanical Corporation Backup seals in rotary pumps
CN102570685B (en) * 2010-12-10 2014-04-16 中国广核集团有限公司 Main pump motor of million-kilowatt pressurized water reactor nuclear power station and main pump thereof
US9046107B2 (en) 2011-08-11 2015-06-02 Itt Manufacturing Enterprises Llc. Vertical double suction pump enclosing tube seal
JP6086672B2 (en) * 2011-12-28 2017-03-01 三菱重工業株式会社 Reactor coolant pump
US10777329B2 (en) * 2011-12-30 2020-09-15 Ge-Hitachi Nuclear Energy Americas Llc Methods and apparatuses for pump sealing during leakage events
JP6086645B2 (en) * 2012-01-26 2017-03-01 三菱重工業株式会社 Reactor coolant pump
FR2986300B1 (en) * 2012-02-01 2014-03-07 Jeumont Systemes De Pompes Et De Mecanismes PASSIVE STOP SEALING DEVICE FOR SHAFT JOINT SYSTEM OF PRIMARY MOTOR PUMP GROUP
JP6057623B2 (en) * 2012-02-29 2017-01-11 三菱重工業株式会社 Shaft seal structure and coolant circulation pump
FR2992392B1 (en) * 2012-06-25 2014-07-11 Jspm PASSIVE STOP SEALING DEVICE FOR SHAFT JOINT SYSTEM OF PRIMARY MOTOR PUMP GROUP
US9206791B2 (en) 2013-03-13 2015-12-08 Westinghouse Electric Company Llc Pump seal with thermal retracting actuator
US9206812B2 (en) 2013-03-13 2015-12-08 Westinghouse Electric Company Llc Pump seal with thermal retracting actuator
US9714644B2 (en) 2013-03-13 2017-07-25 Westinghouse Electric Company Llc Thermal retracting actuator
JP6021702B2 (en) 2013-03-19 2016-11-09 三菱重工業株式会社 Leak prevention seal, reactor coolant pump
JP6080645B2 (en) * 2013-03-27 2017-02-15 荏原冷熱システム株式会社 Electric motor for compressor of turbo refrigerator
DE102013017976A1 (en) * 2013-11-29 2015-06-03 Fte Automotive Gmbh Electric motor driven liquid pump, in particular for forced lubrication of a manual transmission for motor vehicles
CN103939381B (en) * 2013-12-31 2018-08-10 江苏大学 The design method of the one seed nucleus main pump pump housing
ES2880817T3 (en) * 2014-12-05 2021-11-25 Sulzer Management Ag Axially split pump
ES2725912T3 (en) * 2014-12-05 2019-09-30 Sulzer Management Ag Axial separation pump
JP6764381B2 (en) * 2017-08-24 2020-09-30 三菱重工業株式会社 Shaft seal structure and primary coolant circulation pump
US11313470B2 (en) 2020-01-02 2022-04-26 Caterpillar Inc. Contamination guard

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3472169A (en) * 1967-12-27 1969-10-14 Canadian Vickers Ltd Balanced seal for centrifugal pumps
US3574473A (en) * 1968-01-24 1971-04-13 Klein Schanzlin & Becker Ag Method and apparatus for cooling parts of pumps in nuclear reactors or the like
US3685839A (en) * 1969-06-25 1972-08-22 Sulzer Ag Hydrostatic shaft seal
US4105040A (en) * 1977-06-27 1978-08-08 Chester Arnold M Temperature responsive valve seal
US4296934A (en) * 1978-06-09 1981-10-27 Holset Engineering Company Limited Sealing assembly
US4386786A (en) * 1982-02-08 1983-06-07 Merck & Co., Inc. Adjustable pump seal with tapered conical members
US5988649A (en) * 1997-05-01 1999-11-23 E. I. Du Pont De Nemours And Company Fractured seal ring
US6358000B1 (en) * 2000-06-06 2002-03-19 Westinghouse Electric Company Llc Method of repairing a reactor coolant pump shaft and a reactor coolant pump repaired by such method

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001806A (en) * 1954-10-14 1961-09-26 Macks Elmer Fred Seal
US3093380A (en) * 1954-10-14 1963-06-11 Macks Elmer Fred Sealing member and method
US2937039A (en) * 1957-05-29 1960-05-17 Chicago Rawhide Mfg Co Controlled gap seal
US3063077A (en) * 1959-04-20 1962-11-13 Andrew L Pansini Device for the cleaning of swimming pools and the like
US3096985A (en) * 1961-12-14 1963-07-09 Worthington Corp Empergency shaft sealing device
US3377073A (en) * 1965-04-26 1968-04-09 Dresser Ind Shaft seal
CH450081A (en) * 1965-07-01 1968-01-15 Licentia Gmbh Floating ring seal
ES159807Y (en) * 1968-01-15 1971-04-16 Westinghouse Electric Corporation A GASKET TO LIMIT FLUID FLOW ALONG A ROTATING SHAFT.
US3522948A (en) * 1968-05-16 1970-08-04 Westinghouse Electric Corp Variable flow path seal
US3632117A (en) * 1969-05-15 1972-01-04 Westinghouse Electric Corp Seal lift-off mechanism
US3697088A (en) * 1970-08-28 1972-10-10 Durametallic Corp Floating bushing
BE790561A (en) * 1971-10-27 1973-04-26 Westinghouse Electric Corp FLUID PRESSURE CONTROL AND REGULATION DEVICES
US4275891A (en) * 1979-08-14 1981-06-30 Westinghouse Electric Corp. Face type shaft seal for liquid metal pumps
GB2063385B (en) * 1979-11-23 1983-06-22 Cross Mfg Co 1938 Ltd Gas seals
US4375291A (en) * 1981-09-08 1983-03-01 Borg-Warner Corporation Back-up mechanical seal
US5171024A (en) * 1988-05-23 1992-12-15 Westinghouse Electric Corp. Reactor coolant pump shaft seal utilizing shape memory metal
FR2688283B1 (en) * 1992-03-04 1997-05-30 Snecma DEVICE FOR SEALING BETWEEN A PRESSURIZED VOLUME AND A LUBRICATED VOLUME.
US5568929A (en) * 1995-04-03 1996-10-29 Rockwell International Corporation Temperature compensations seal
US5971400A (en) * 1998-08-10 1999-10-26 General Electric Company Seal assembly and rotary machine containing such seal assembly
US6250641B1 (en) * 1998-11-25 2001-06-26 General Electric Co. Positive biased packing ring brush seal combination
US6371488B1 (en) * 1999-12-17 2002-04-16 George E. Szymborski Sealing system for high pressure closed systems having a rotating member and a housing therein

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3472169A (en) * 1967-12-27 1969-10-14 Canadian Vickers Ltd Balanced seal for centrifugal pumps
US3574473A (en) * 1968-01-24 1971-04-13 Klein Schanzlin & Becker Ag Method and apparatus for cooling parts of pumps in nuclear reactors or the like
US3685839A (en) * 1969-06-25 1972-08-22 Sulzer Ag Hydrostatic shaft seal
US4105040A (en) * 1977-06-27 1978-08-08 Chester Arnold M Temperature responsive valve seal
US4296934A (en) * 1978-06-09 1981-10-27 Holset Engineering Company Limited Sealing assembly
US4386786A (en) * 1982-02-08 1983-06-07 Merck & Co., Inc. Adjustable pump seal with tapered conical members
US5988649A (en) * 1997-05-01 1999-11-23 E. I. Du Pont De Nemours And Company Fractured seal ring
US6358000B1 (en) * 2000-06-06 2002-03-19 Westinghouse Electric Company Llc Method of repairing a reactor coolant pump shaft and a reactor coolant pump repaired by such method

Also Published As

Publication number Publication date
US20070172367A1 (en) 2007-07-26
JP2009524776A (en) 2009-07-02
EP1984626A2 (en) 2008-10-29
WO2008030630A2 (en) 2008-03-13

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