Wyniki wyszukiwania - Biblioteka Nauki

Ten serwis zostanie wyłączony 2025-02-11.

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 4

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: magnetic fluid seal

Sortuj według:

Ogranicz wyniki do:

Soversenstvovanie konstrukcji kombinirovanyh magnitozidkostnyh germetizatorov, prednaznacennyh dla zameny beskontaktnyh uplotnenij

100%

Vinogradov A. , Radionov A. , Kazakuca A.

tom Z. 10, Vol. 2

19-26

The ways of improvement of combined magnetic fluid seals for bearing units are proposed. Some new models of large electric motors bearing units combined MFS are described.

Analiz naibolee racional'nyh oblastej primenenia magnitozidkostnyh germetizatorov

100%

Radionov A.

tom Z. 10, Vol. 2

55-63

The analysis of application fields in which MFS more efficient than conventional sealing is given.

O modelirovanii povedenia magnitnoj zidkosti v kol'cevom zazore germetizatora

80%

Selezov I. , Radionov A.

tom Z. 10, Vol. 2

27-32

Behavior of magnetic fluid in the ring gap of magnetic fluid seal is considered. The system of equations, the numerical solution of which will permit to determine the fields of temperature, pressure, density and magnetization in the ring gap of magnetic fluid seal is proposed.

Mechanically non-contact axial flow blood pump

60%

Mitamura Y. , Kido K. , Yano T. , Sakota D. , Yozu R. , Okamoto E. , Murabayashi S. , Nishimura I.

2007

tom Vol. 27, no. 1-2

139-146

To overcome the drive shaft seal and bearing problem of the rotary blood pump, a hydro-dynamic bearing, a magnetic fluid seal and a brushless DC motor were employed in an axial flow pump. This enabled contact free rotation of the impeller without material wear. The axial flow pump consists of a brushless DC motor, an impeller and a guide vane. The motor rotor is directly connected to the impeller by a motor shaft. A hydrodynamic bearing is installed on the motor shaft. The motor and the hydrodynamic bearing are housed in a cylindrical casing and are waterproofed by a magnetic fluid seal. Impeller shaft displacement was measured using laser sensor. The axial and radial displacements of the shaft were less than a few micrometers for up to 8500 rpm. The shaft did not touch the housing. A flow of 5 L/min was obtained at 8000 rpm at a pressure difference of 100 mmHg. The left ventricular bypass experiment was performed in vitro. With an increase of the motor speed, the bypass flow increased, and at 7000 rpm a total bypass was obtained. The hydrodynamic bearing worked normally under variable load conditions. In conclusion, the axial flow blood pump consisting of a hydrodynamic bearing, a magnetic fluid seal and a brushless DC motor provides contact free rotation of the impeller without material wear.