PL443157A1 - Rotary shaft passage with multi-stage ferromagnetic sealing - Google Patents

Rotary shaft passage with multi-stage ferromagnetic sealing

Info

Publication number
PL443157A1
PL443157A1 PL443157A PL44315722A PL443157A1 PL 443157 A1 PL443157 A1 PL 443157A1 PL 443157 A PL443157 A PL 443157A PL 44315722 A PL44315722 A PL 44315722A PL 443157 A1 PL443157 A1 PL 443157A1
Authority
PL
Poland
Prior art keywords
flanges
pole pieces
permanent magnets
edge pole
poles
Prior art date
Application number
PL443157A
Other languages
Polish (pl)
Inventor
Włodzimierz Ochoński
Karolina Papis-Frączek
Szymon Podlasek
Krzysztof Lalik
Original Assignee
Akademia Górniczo-Hutnicza Im.Stanisława Staszica W Krakowie
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 Akademia Górniczo-Hutnicza Im.Stanisława Staszica W Krakowie filed Critical Akademia Górniczo-Hutnicza Im.Stanisława Staszica W Krakowie
Priority to PL443157A priority Critical patent/PL443157A1/en
Publication of PL443157A1 publication Critical patent/PL443157A1/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
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • 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
    • 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
    • F04D29/102—Shaft sealings especially adapted for elastic fluid 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/762—Sealings of ball or roller bearings by means of a fluid
    • F16C33/763—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap
    • F16C33/765—Sealings of ball or roller bearings by means of a fluid retained in the sealing gap by a magnetic field
    • 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
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings
    • 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
    • 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
    • F16J15/44—Free-space packings
    • F16J15/443—Free-space packings provided with discharge channels
    • 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
    • F16J15/54—Other sealings for rotating shafts

Landscapes

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

Abstract

Przepust wału obrotowego z wielostopniowym uszczelnieniem ferromagnetycznym zawierający wielokrawędziowe nabiegunniki, magnesy trwałe, tulejki dystansowe, przekładki niemagnetyczne i ciecz ferromagnetyczną charakteryzuje się tym, że w komorze dławnicowej (2a) obudowy (2), pomiędzy łożyskami tocznymi (3), umieszczone są wielokrawędziowe nabiegunniki (4) w postaci tulejek kołnierzowych, z kołnierzami (4a) skierowanymi w stronę obudowy (2), osadzone na wale obrotowym (1). Na walcowych powierzchniach kołnierzy (4a) wielokrawędziowych nabiegunników (4) wykonane są występy uszczelniające, zaś po obu stronach kołnierzy (4a) wielokrawędziowych nabiegunników (4) usytuowane są magnesy trwałe (5) o przekroju poprzecznym ceowym, z ramionami skierowanymi w stronę kołnierzy (4a), stanowiącymi bieguny N i S magnesów trwałych (5), przedzielone tulejkami dystansowymi (6), umieszczonymi pomiędzy biegunami N sąsiednich magnesów trwałych (5) i osadzone na wewnętrznej powierzchni cylindrycznej komory dławnicowej (2a). Ciecz ferromagnetyczna (7) znajduje się w szczelinach promieniowych pomiędzy występami uszczelniającymi kołnierzy (4a) wielokrawędziowych nabiegunników (4) i wewnętrznymi powierzchniami cylindrycznymi tulejek dystansowych (6) oraz w szczelinach osiowych (δ<sub>a</sub>) pomiędzy końcami ramion stanowiącymi bieguny S magnesów trwałych (5), a powierzchniami bocznymi kołnierzy (4a) wielokrawędziowych nabiegunników (4).The rotating shaft bushing with a multi-stage ferromagnetic seal containing multi-edge pole pieces, permanent magnets, spacer sleeves, non-magnetic spacers and ferromagnetic liquid is characterized by the fact that in the stuffing box (2a) of the housing (2), between the rolling bearings (3), multi-edge pole pieces ( 4) in the form of flange sleeves, with flanges (4a) facing the housing (2), mounted on the rotating shaft (1). Sealing projections are made on the cylindrical surfaces of the flanges (4a) of the multi-edge pole pieces (4), and on both sides of the flanges (4a) of the multi-edge pole pieces (4) there are permanent magnets (5) with a C-shaped cross-section, with their arms directed towards the flanges (4a). ), constituting the N and S poles of permanent magnets (5), separated by spacer sleeves (6), placed between the N poles of adjacent permanent magnets (5) and mounted on the inner surface of the cylindrical stuffing box (2a). The ferromagnetic liquid (7) is located in the radial gaps between the sealing projections of the flanges (4a) of the multi-edge pole pieces (4) and the internal cylindrical surfaces of the spacer sleeves (6) and in the axial gaps (δ<sub>a</sub>) between the ends of the arms constituting the S poles of the permanent magnets (5) and the side surfaces of the flanges (4a) of the multi-edge pole pieces (4).

PL443157A 2022-12-15 2022-12-15 Rotary shaft passage with multi-stage ferromagnetic sealing PL443157A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL443157A PL443157A1 (en) 2022-12-15 2022-12-15 Rotary shaft passage with multi-stage ferromagnetic sealing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL443157A PL443157A1 (en) 2022-12-15 2022-12-15 Rotary shaft passage with multi-stage ferromagnetic sealing

Publications (1)

Publication Number Publication Date
PL443157A1 true PL443157A1 (en) 2024-06-17

Family

ID=91539520

Family Applications (1)

Application Number Title Priority Date Filing Date
PL443157A PL443157A1 (en) 2022-12-15 2022-12-15 Rotary shaft passage with multi-stage ferromagnetic sealing

Country Status (1)

Country Link
PL (1) PL443157A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110248449A1 (en) * 2010-04-12 2011-10-13 Beijing Jiaotong University Combined sealing device for a rotary shaft
WO2012086320A1 (en) * 2010-12-23 2012-06-28 イーグル工業株式会社 Seal device using magnetic fluid
CN108953615A (en) * 2018-08-13 2018-12-07 广西科技大学 A kind of series parallel type magnetic fluid sealing structure
PL236181B1 (en) * 2018-12-27 2020-12-14 Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie Hybrid magnetic fluid seal for high speed shaft

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110248449A1 (en) * 2010-04-12 2011-10-13 Beijing Jiaotong University Combined sealing device for a rotary shaft
WO2012086320A1 (en) * 2010-12-23 2012-06-28 イーグル工業株式会社 Seal device using magnetic fluid
CN108953615A (en) * 2018-08-13 2018-12-07 广西科技大学 A kind of series parallel type magnetic fluid sealing structure
PL236181B1 (en) * 2018-12-27 2020-12-14 Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie Hybrid magnetic fluid seal for high speed shaft

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