PL423713A1 - Hybrid seal with magnetic fluid, preferably for a high-speed shaft - Google Patents

Hybrid seal with magnetic fluid, preferably for a high-speed shaft

Info

Publication number
PL423713A1
PL423713A1 PL423713A PL42371317A PL423713A1 PL 423713 A1 PL423713 A1 PL 423713A1 PL 423713 A PL423713 A PL 423713A PL 42371317 A PL42371317 A PL 42371317A PL 423713 A1 PL423713 A1 PL 423713A1
Authority
PL
Poland
Prior art keywords
sleeve
pole pieces
flange
separated
rectangular cross
Prior art date
Application number
PL423713A
Other languages
Polish (pl)
Other versions
PL233726B1 (en
Inventor
Włodzimierz Ochoński
Marcin Kot
Dariusz Wędrychowicz
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 PL423713A priority Critical patent/PL233726B1/en
Publication of PL423713A1 publication Critical patent/PL423713A1/en
Publication of PL233726B1 publication Critical patent/PL233726B1/en

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  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

Hybrydowe uszczelnienie z cieczą magnetyczną zwłaszcza dla wału wysokoobrotowego ma w obudowie (2) osadzone dwie pary wielokrawędziowych nabiegunników (7), z których każda przedzielona jest magnesem trwałym (8), a pomiędzy nimi umieszczona jest także w obudowie uszczelnienia (2), para nabiegunników o przekroju prostokątnym (4), przedzielona magnesem trwałym (5). Na wale (1) osadzona jest tulejka (3), której kołnierz (3a) umieszczony jest z luzem w komorze, utworzonej pomiędzy nabiegunnikami o przekroju prostokątnym (4) przedzielonymi magnesem trwałym (5), przy czym na bocznych powierzchniach kołnierza (3a) tulejki (3) wykonane są występy uszczelniające. Ciecz magnetyczna (6) znajduje się w promieniowych szczelinach δr pomiędzy występami uszczelniającymi wielokrawędziowych nabiegunników (7) usytuowanymi na ich wewnętrznych cylindrycznych powierzchniach, a zewnętrznymi walcowymi powierzchniami tulejki (3) oraz w szczelinach osiowych δa pomiędzy występami uszczelniającymi na bocznych powierzchniach kołnierza (3a) tulejki (3), a bocznymi gładkimi powierzchniami nabiegunników o przekroju prostokątnym (4), położonymi po obu stronach kołnierza (3a) tulejki (3) lub w pierścieniowej szczelinie pomiędzy zewnętrznym obwodem kołnierza (3a) tulejki (3), a wewnętrzną powierzchnią cylindryczną magnesu (5).A hybrid seal with a magnetic liquid, especially for a high-speed shaft, has two pairs of multi-edge pole pieces (7) embedded in the housing (2), each of which is separated by a permanent magnet (8), and between them a pair of pole pieces is also placed in the seal housing (2). with a rectangular cross-section (4), separated by a permanent magnet (5). A sleeve (3) is mounted on the shaft (1), the collar (3a) of which is placed loosely in a chamber formed between pole pieces with a rectangular cross-section (4) separated by a permanent magnet (5), and on the side surfaces of the sleeve collar (3a) (3) sealing lugs are made. The magnetic fluid (6) is located in the radial gaps δr between the sealing lugs of the multi-edge pole pieces (7) located on their internal cylindrical surfaces and the external cylindrical surfaces of the sleeve (3) and in the axial gaps δa between the sealing lugs on the side surfaces of the flange (3a) of the sleeve (3), and the side smooth surfaces of the pole pieces with a rectangular cross-section (4), located on both sides of the flange (3a) of the sleeve (3) or in the annular gap between the outer circumference of the flange (3a) of the sleeve (3) and the inner cylindrical surface of the magnet ( 5).

PL423713A 2017-12-04 2017-12-04 Hybrid seal with magnetic fluid, preferably for a high-speed shaft PL233726B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL423713A PL233726B1 (en) 2017-12-04 2017-12-04 Hybrid seal with magnetic fluid, preferably for a high-speed shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL423713A PL233726B1 (en) 2017-12-04 2017-12-04 Hybrid seal with magnetic fluid, preferably for a high-speed shaft

Publications (2)

Publication Number Publication Date
PL423713A1 true PL423713A1 (en) 2019-06-17
PL233726B1 PL233726B1 (en) 2019-11-29

Family

ID=66809677

Family Applications (1)

Application Number Title Priority Date Filing Date
PL423713A PL233726B1 (en) 2017-12-04 2017-12-04 Hybrid seal with magnetic fluid, preferably for a high-speed shaft

Country Status (1)

Country Link
PL (1) PL233726B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097853A (en) * 1961-09-29 1963-07-16 Gen Electric Dynamic seal
US4054293A (en) * 1976-12-27 1977-10-18 Borg-Warner Corporation Hybrid magnetic fluid shaft seals
PL215140B1 (en) * 2007-07-30 2013-10-31 Akad Gorniczo Hutnicza Sealing with magnetic liquid
PL225374B1 (en) * 2013-12-17 2017-04-28 Politechnika Gdańska Multistage sealing with magnetic fluid for rotating shaft

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097853A (en) * 1961-09-29 1963-07-16 Gen Electric Dynamic seal
US4054293A (en) * 1976-12-27 1977-10-18 Borg-Warner Corporation Hybrid magnetic fluid shaft seals
PL215140B1 (en) * 2007-07-30 2013-10-31 Akad Gorniczo Hutnicza Sealing with magnetic liquid
PL225374B1 (en) * 2013-12-17 2017-04-28 Politechnika Gdańska Multistage sealing with magnetic fluid for rotating shaft

Also Published As

Publication number Publication date
PL233726B1 (en) 2019-11-29

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