JPH037653U

JPH037653U -

Info

Publication number: JPH037653U
Application number: JP6523889U
Authority: JP
Priority date: 1989-06-02
Filing date: 1989-06-02
Publication date: 1991-01-24

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例による横軸水車発電
機の軸受冷却装置の要部断面図、第２図は第１図
のＡ−Ａ断面図、第３図は第１図のＢ−Ｂ断面図
、第４図は従来例による横軸水車発電機の回転ヒ
ートパイプを用いた軸受冷却装置の断面図、第５
図は第４図の軸受冷却装置の要部断面図、第６図
は第５図のＣ−Ｃ断面図、第７図は第５図のＤ−
Ｄ断面図、第８図は従来の軸受冷却装置の低速回
転時の作動液の流動状態を示す回転軸の断面図、
第９図は従来の軸受冷却装置の高速回転時の作動
液の流動状態を示す回転軸の断面図、第１０図は
従来の軸受冷却装置の回転速度による沸騰熱抵抗
の変化を示す図である。１……回転軸、２……ジヤーナル軸受、３……
スラスト軸受、４……蒸気空間、５……作動液、
６１……冷却部インナーフイン、６２……ジヤー
ナル部インナーフイン。 Fig. 1 is a cross-sectional view of the main parts of a bearing cooling system for a horizontal shaft water turbine generator according to an embodiment of this invention, Fig. 2 is a cross-sectional view taken along line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along line B-B in Fig. 1. 4 is a cross-sectional view of a conventional bearing cooling device using a rotating heat pipe for a horizontal-shaft water turbine generator;
The figure is a sectional view of the main part of the bearing cooling device in Fig. 4, Fig. 6 is a sectional view taken along line C-C in Fig. 5, and Fig. 7 is a sectional view taken along line D-- in Fig. 5.
D sectional view, FIG. 8 is a sectional view of the rotating shaft showing the flow state of the working fluid during low speed rotation of a conventional bearing cooling device;
FIG. 9 is a cross-sectional view of the rotating shaft showing the flow state of the working fluid during high-speed rotation of a conventional bearing cooling device, and FIG. 10 is a diagram showing the change in boiling thermal resistance depending on the rotation speed of the conventional bearing cooling device. . 1...Rotating shaft, 2...Journal bearing, 3...
Thrust bearing, 4... Steam space, 5... Working fluid,
61... Cooling section inner fin, 62... Journal section inner fin.

Claims

[Scope of utility model registration request]

A rotating shaft heat pipe in which a rotating shaft directly connected to a runner is horizontally supported by a journal bearing and a thrust bearing outside a casing, the rotating shaft uses the journal bearing and thrust bearing as a heat generating part, and the runner exposed to a waterway serves as a cooling part. In the horizontal shaft water turbine generator, the steam space near the journal bearing of the rotating shaft includes a plurality of radial fins and a cylindrical boss, the outer diameter side is in contact with the inner wall of the rotating shaft and the inner diameter side is actuated. A bearing cooling device for a horizontal-shaft water turbine generator, characterized in that a journal portion inner fin is provided to form a liquid vapor passage.