PL443095A1 - Hybrid stuffing box seal with magnetic fluid for a rotating shaft - Google Patents

Hybrid stuffing box seal with magnetic fluid for a rotating shaft

Info

Publication number
PL443095A1
PL443095A1 PL443095A PL44309522A PL443095A1 PL 443095 A1 PL443095 A1 PL 443095A1 PL 443095 A PL443095 A PL 443095A PL 44309522 A PL44309522 A PL 44309522A PL 443095 A1 PL443095 A1 PL 443095A1
Authority
PL
Poland
Prior art keywords
rotating shaft
stuffing box
hybrid
pole pieces
magnetic fluid
Prior art date
Application number
PL443095A
Other languages
Polish (pl)
Other versions
PL248375B1 (en
Inventor
Leszek Matuszewski
Original Assignee
Politechnika Gdańska
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 Politechnika Gdańska filed Critical Politechnika Gdańska
Priority to PL443095A priority Critical patent/PL248375B1/en
Publication of PL443095A1 publication Critical patent/PL443095A1/en
Publication of PL248375B1 publication Critical patent/PL248375B1/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
    • 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
    • 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
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • 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

Przedmiotem zgłoszenia jest hybrydowe uszczelnienie dławnicowe z cieczą magnetyczną dla wału obrotowego. W komorze dławnicowej (2a) w obudowie (2) umieszczone są dwie pary wielokrawędziowych nabiegunników (3), oddzielone od siebie co najmniej dwoma magnesami trwałymi (7) i (8) spolaryzowanymi promieniowo, ustawionymi względem powierzchni wału obrotowego (1) biegunami przeciwnymi S i N oraz miękki pierścień uszczelniający (11) o przekroju prostokątnym, do którego przylega pierścień dociskowy (14) naciskany sprężyną śrubową (15) umieszczoną we wnęce (13w) wykonanej w dławiku (13). W wielokrawędziowych nabiegunnikach (3) wykonane są zewnętrzne wnęki pierścieniowe (3z) oraz wewnętrzne wnęki pierścieniowe (3w) położone po stronie wału obrotowego (1), tworząc gniazda zewnętrzne i gniazda wewnętrzne. Ciecz magnetyczna (10) utrzymuje się w szczelinach pierścieniowych (δ) pomiędzy występami uszczelniającymi usytuowanymi na wewnętrznych powierzchniach cylindrycznych wielokrawędziowych nabiegunników (3) oraz w szczelinach pierścieniowych (δ), pomiędzy wewnętrznymi cylindrycznymi powierzchniami magnesów trwałych (7) i (8) spolaryzowanych promieniowo, a powierzchnią wału obrotowego (1).The subject of the application is a hybrid stuffing box seal with a magnetic fluid for a rotating shaft. In the stuffing box (2a) in the housing (2) there are two pairs of multi-edge pole pieces (3), separated from each other by at least two radially polarized permanent magnets (7) and (8), set with opposite poles S relative to the surface of the rotating shaft (1). and N and a soft sealing ring (11) with a rectangular cross-section, to which a pressure ring (14) pressed by a coil spring (15) located in the recess (13w) made in the gland (13) adheres. The multi-edge pole pieces (3) feature external ring cavities (3z) and internal ring cavities (3w) located on the side of the rotating shaft (1), creating external sockets and internal sockets. The magnetic liquid (10) is maintained in the annular gaps (δ) between the sealing projections located on the inner surfaces of the cylindrical multi-edge pole pieces (3) and in the annular gaps (δ) between the inner cylindrical surfaces of the radially polarized permanent magnets (7) and (8), and the surface of the rotating shaft (1).

PL443095A 2022-12-09 2022-12-09 Hybrid stuffing box seal with magnetic fluid for a rotating shaft PL248375B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL443095A PL248375B1 (en) 2022-12-09 2022-12-09 Hybrid stuffing box seal with magnetic fluid for a rotating shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL443095A PL248375B1 (en) 2022-12-09 2022-12-09 Hybrid stuffing box seal with magnetic fluid for a rotating shaft

Publications (2)

Publication Number Publication Date
PL443095A1 true PL443095A1 (en) 2024-06-10
PL248375B1 PL248375B1 (en) 2025-12-01

Family

ID=91432122

Family Applications (1)

Application Number Title Priority Date Filing Date
PL443095A PL248375B1 (en) 2022-12-09 2022-12-09 Hybrid stuffing box seal with magnetic fluid for a rotating shaft

Country Status (1)

Country Link
PL (1) PL248375B1 (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

Also Published As

Publication number Publication date
PL248375B1 (en) 2025-12-01

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