JPS5533921A - Magnetic fluid seal device - Google Patents

Magnetic fluid seal device

Info

Publication number
JPS5533921A
JPS5533921A JP10516278A JP10516278A JPS5533921A JP S5533921 A JPS5533921 A JP S5533921A JP 10516278 A JP10516278 A JP 10516278A JP 10516278 A JP10516278 A JP 10516278A JP S5533921 A JPS5533921 A JP S5533921A
Authority
JP
Japan
Prior art keywords
magnetic fluid
pressure
fed
inner circumferential
ring
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
JP10516278A
Other languages
Japanese (ja)
Other versions
JPS6014229B2 (en
Inventor
Yoshihiko Shindo
Akira Ishihara
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP53105162A priority Critical patent/JPS6014229B2/en
Publication of JPS5533921A publication Critical patent/JPS5533921A/en
Publication of JPS6014229B2 publication Critical patent/JPS6014229B2/en
Expired legal-status Critical Current

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)
  • Sealing Of Bearings (AREA)

Abstract

PURPOSE:To make the supply of magnetic fluid automatically and promptly operable, even without operating a process to lower the gas pressure with a running ceased of the rotary machine. CONSTITUTION:Two ring-shape ball blocks 2, that surround a rotary shaft 1, are supported to inner circumferential face of a fixed casing 4, and a magnetic unit cylinder 6, facing to inner circumferential face of the above described block 2, is engaged to be installed to the rotary shaft 1, and in the portion of a ring-shape fine protrusion 7 of this cylinder 6, is intermediately placed a magnetic fluid 15 to perform the sealing operation. In this case, with a seal of the portion of the magnetic fluid 15 damagd by any reason and the pressure of a space 11, 13 equalized to transmit an elimination of pressure difference between pressure detectors 22, 23 to a comparator circuit 21, a pluse is transmitted from a pulse transmitter 20, and fed to a pulse motor 18 through an amplifier 19. In this way, an injection device 16 is actuated till a pressure sensor 24 detects a sealing pressure reaching the prescribed value, and the magnetic fluid is fed from a feed path 14.
JP53105162A 1978-08-29 1978-08-29 Magnetic fluid seal device Expired JPS6014229B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53105162A JPS6014229B2 (en) 1978-08-29 1978-08-29 Magnetic fluid seal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53105162A JPS6014229B2 (en) 1978-08-29 1978-08-29 Magnetic fluid seal device

Publications (2)

Publication Number Publication Date
JPS5533921A true JPS5533921A (en) 1980-03-10
JPS6014229B2 JPS6014229B2 (en) 1985-04-12

Family

ID=14399994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53105162A Expired JPS6014229B2 (en) 1978-08-29 1978-08-29 Magnetic fluid seal device

Country Status (1)

Country Link
JP (1) JPS6014229B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407518A (en) * 1983-01-05 1983-10-04 Ferrofluidics Corporation Nonbursting multiple-stage ferrofluid seal and system
EP2228571A1 (en) * 2009-03-12 2010-09-15 Ferrotec (UK), Ltd. Magnetic fluid rotary feedthrough with sensing and communication capability
CN110848393A (en) * 2019-10-17 2020-02-28 浙江大学 Multistage magnetic fluid sealing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4407518A (en) * 1983-01-05 1983-10-04 Ferrofluidics Corporation Nonbursting multiple-stage ferrofluid seal and system
EP2228571A1 (en) * 2009-03-12 2010-09-15 Ferrotec (UK), Ltd. Magnetic fluid rotary feedthrough with sensing and communication capability
CN110848393A (en) * 2019-10-17 2020-02-28 浙江大学 Multistage magnetic fluid sealing device

Also Published As

Publication number Publication date
JPS6014229B2 (en) 1985-04-12

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