SE7707257L - SEAL - Google Patents

SEAL

Info

Publication number
SE7707257L
SE7707257L SE7707257A SE7707257A SE7707257L SE 7707257 L SE7707257 L SE 7707257L SE 7707257 A SE7707257 A SE 7707257A SE 7707257 A SE7707257 A SE 7707257A SE 7707257 L SE7707257 L SE 7707257L
Authority
SE
Sweden
Prior art keywords
gap
component
sealing
seal
magnetic fluid
Prior art date
Application number
SE7707257A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
F Laussermair
B Stemmler
Original Assignee
Maschf Augsburg Nuernberg Ag
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 Maschf Augsburg Nuernberg Ag filed Critical Maschf Augsburg Nuernberg Ag
Publication of SE7707257L publication Critical patent/SE7707257L/en

Links

Classifications

    • 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
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Gasket Seals (AREA)

Abstract

For sealing off a gap (12) between two components (10, 11), which move relative to one another and in a straight line, the sealing device has a magnetic fluid (18). Anchored in one component (11), e.g. a housing, is an annular permanent magnet (16) which, by means of a ferromagnetic ring (17) recessed into the other component (10), e.g. a rod, produces a magnetic field by means of which the magnetic fluid (18) is held in the gap (12). Such a seal, which is suitable for high sealing requirements and has a life which is independent of the frequency of motion can be used in conjunction with machine pistons and piston rods. <IMAGE>
SE7707257A 1976-06-26 1977-06-22 SEAL SE7707257L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762628831 DE2628831A1 (en) 1976-06-26 1976-06-26 POETRY

Publications (1)

Publication Number Publication Date
SE7707257L true SE7707257L (en) 1977-12-27

Family

ID=5981554

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7707257A SE7707257L (en) 1976-06-26 1977-06-22 SEAL

Country Status (9)

Country Link
JP (1) JPS531750A (en)
AT (1) AT357836B (en)
CH (1) CH622596A5 (en)
DE (1) DE2628831A1 (en)
FR (1) FR2356066A1 (en)
GB (1) GB1575145A (en)
IT (1) IT1082068B (en)
NL (1) NL7705853A (en)
SE (1) SE7707257L (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293137A (en) * 1978-12-11 1981-10-06 Ezekiel Frederick D Magnetic liquid shaft sealing
US4252353A (en) * 1979-04-26 1981-02-24 Ferrofluidics Corporation Self-activating ferrofluid seals
US4252328A (en) * 1980-05-01 1981-02-24 Ferrofluidics Corporation Self-activating ferrofluid seal and method
DE3019864C2 (en) * 1980-05-23 1982-05-27 Kraftwerk Union AG, 4330 Mülheim Generator rotor, especially turbo generator rotor, with superconducting excitation winding
US4357022A (en) * 1980-11-19 1982-11-02 Ferrofluidics Corporation Ferrofluid rotary-shaft seal apparatus and method
JPS5828159U (en) * 1981-08-18 1983-02-23 日本精工株式会社 Magnetic fluid seal device
JPS5836602A (en) * 1981-08-28 1983-03-03 Hitachi Ltd Recovering method for sublimable gas
US4407518A (en) * 1983-01-05 1983-10-04 Ferrofluidics Corporation Nonbursting multiple-stage ferrofluid seal and system
GB8322056D0 (en) * 1983-08-16 1983-09-21 Atomic Energy Authority Uk Magnetic field seal
JPS61270520A (en) * 1986-04-30 1986-11-29 Matsushita Electric Ind Co Ltd Bearing device of rotary shaft
DE3922356A1 (en) * 1989-07-07 1991-01-17 Freudenberg Carl Fa FERROFLUID SEAL FOR A SHAFT
DE9307447U1 (en) * 1993-05-17 1993-07-22 Friatec-Rheinhütte GmbH & Co., 6200 Wiesbaden Vertical magnetic coupling pump or stirrer
DE29606679U1 (en) * 1996-04-12 1997-08-14 Feodor Burgmann Dichtungswerke GmbH & Co, 82515 Wolfratshausen Ferrofluid seal
DE102006051992B3 (en) * 2006-11-03 2008-01-31 Dtg - Development & Technology Gmbh Magnetic fluid seal for sealing of shaft or axle against hub, has magnet with rubber elastic material with two radial projections and magnetic poles of different polarity are formed, whose tips are in contact with counter direction position
RU2531070C1 (en) * 2013-04-05 2014-10-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) Magnetic liquid seal of shaft with reduced friction torque
RU2725399C1 (en) * 2019-11-22 2020-07-02 федеральное государственное бюджетное образовательное учреждение высшего образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) Magneto-liquid seal of shaft with reduced friction moment
CN114396507A (en) * 2022-01-14 2022-04-26 重庆川仪调节阀有限公司 Device and method for conducting filler plugging by using magnetic fluid

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1007372A (en) * 1948-12-23 1952-05-05 Sealing device
FR1119965A (en) * 1954-03-05 1956-06-27 Thomson Houston Comp Francaise Improved seals for rotating shafts and other moving parts
US3740060A (en) * 1971-11-03 1973-06-19 Avco Corp A shaft seal
DE2247953A1 (en) * 1972-09-29 1974-04-11 Brueckner Apparatebau Gmbh DEVICE FOR SEALING A GAP

Also Published As

Publication number Publication date
IT1082068B (en) 1985-05-21
DE2628831A1 (en) 1978-01-05
NL7705853A (en) 1977-12-28
FR2356066B1 (en) 1983-05-06
GB1575145A (en) 1980-09-17
JPS531750A (en) 1978-01-10
FR2356066A1 (en) 1978-01-20
AT357836B (en) 1980-08-11
ATA358277A (en) 1979-12-15
CH622596A5 (en) 1981-04-15

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