JPS61162663U

JPS61162663U -

Info

Publication number: JPS61162663U
Application number: JP4753385U
Authority: JP
Priority date: 1985-03-29
Filing date: 1985-03-29
Publication date: 1986-10-08

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による超電導回転
電機のシール装置を示す断面図、第２図は従来の
超電導回転電機ののシール装置を示す断面図であ
る。図において、１はケーシング、２はポールピー
ス、４は円筒磁石、６は回転軸、７はブツシユ、
７ａはフリンジ、９はシール膜、１０は補給路、
１１は磁性流体容器、１２は磁性流体、１３は連
通路、１４は加圧手段である。尚、図中同一符号
は同一相当部分を示す。 FIG. 1 is a cross-sectional view showing a sealing device for a superconducting rotating electric machine according to an embodiment of the invention, and FIG. 2 is a cross-sectional view showing a conventional sealing device for a superconducting rotating electric machine. In the figure, 1 is a casing, 2 is a pole piece, 4 is a cylindrical magnet, 6 is a rotating shaft, 7 is a bush,
7a is a fringe, 9 is a seal membrane, 10 is a supply path,
11 is a magnetic fluid container, 12 is a magnetic fluid, 13 is a communication path, and 14 is a pressurizing means. Note that the same reference numerals in the figures indicate the same corresponding parts.

Claims

[Scope of utility model registration request]

A casing made of a magnetic material into which a rotating shaft made of a non-magnetic material is inserted, a cylindrical magnet mounted inside the casing, and a cylindrical magnet mounted on both sides of the casing with the cylindrical magnet sandwiched between the casing and bearing the rotating shaft. a pair of pole pieces made of a magnetic material supported through the pole pieces; a bush made of a magnetic material located on the inner peripheral side of each of the pole pieces and attached to the rotation shaft;
A plurality of sealing means for sealing between the bush and the pole piece using a magnetic fluid, wherein a replenishment path for replenishing the magnetic fluid formed to communicate with each of the sealing means; A magnetic fluid container located outside the casing stores a replenishing magnetic fluid, a communication passage communicating the magnetic fluid container with each of the replenishment paths, and a pressurizing means for pressurizing the inside of the magnetic fluid container. A sealing device for a superconducting rotating electric machine, which is characterized by: