JPS6229401U

JPS6229401U -

Info

Publication number: JPS6229401U
Application number: JP12023185U
Authority: JP
Priority date: 1985-08-07
Filing date: 1985-08-07
Publication date: 1987-02-23

Description

[Brief explanation of the drawing]

第１図は本考案によるラビリンスパツキン装置
の断面図、第２図はノズルパツキング部展開図、
第３図は本考案において確認されたラビリンスパ
ツキン内の蒸気圧力分布図、第４図は従来技術に
より構成したラビリンスパツキン装置の断面図、
第５図はラビリンスパツキン装置の拡大断面図、
第６図は従来技術におけるラビリンスパツキン内
の蒸気圧力分布図である。１……回転軸、２……ノズルダイアフラム、３
ａ……絞り小片、３ｂ……絞り大片、４……歯状
凸部、８……ノズルパツキンリング、９……板状
小片。 Fig. 1 is a sectional view of the labyrinth packing device according to the present invention, Fig. 2 is a developed view of the nozzle packing part,
Fig. 3 is a diagram of the steam pressure distribution inside the labyrinth packing confirmed in the present invention, and Fig. 4 is a cross-sectional view of the labyrinth packing device constructed according to the prior art.
Figure 5 is an enlarged sectional view of the labyrinth packing device.
FIG. 6 is a steam pressure distribution diagram within a labyrinth packing according to the prior art. 1... Rotating shaft, 2... Nozzle diaphragm, 3
a...Small aperture piece, 3b...Large aperture piece, 4...Tooth-like convex portion, 8...Nozzle packing ring, 9...Small plate-like piece.

Claims

[Claims for Utility Model Registration] (1) A plurality of tooth-like protrusions are formed on the outer periphery of the rotating shaft at a constant interval from each other, and a plurality of aperture pieces extend toward the tooth-like protrusions. and a labyrinth packing device in which a plurality of large aperture pieces extending between the toothed convex portions are provided on the inner circumferential surface of a stationary body via packing, wherein the small aperture pieces and the large aperture pieces arranged along the rotation axis A labyrinth packing device characterized in that a plurality of fluid diverting means are provided in a row at a front position, thereby causing a flow in a direction opposite to the direction of rotation of the rotating shaft with respect to the fluid flowing toward the inlet side of the labyrinth packing. . (2) A utility model characterized in that the fluid deflection means is a small plate-like piece provided on the packing ring, and the small plate-like piece is arranged so as to intersect with the axis of the rotating shaft at a certain angle. A labyrinth packing device according to claim 1.