JPS6483891A - Labyrinth sealing device for hydraulic machine - Google Patents
Labyrinth sealing device for hydraulic machineInfo
- Publication number
- JPS6483891A JPS6483891A JP62240735A JP24073587A JPS6483891A JP S6483891 A JPS6483891 A JP S6483891A JP 62240735 A JP62240735 A JP 62240735A JP 24073587 A JP24073587 A JP 24073587A JP S6483891 A JPS6483891 A JP S6483891A
- Authority
- JP
- Japan
- Prior art keywords
- labyrinth
- act
- spring
- making
- time
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
PURPOSE:To reduce the leak loss of a labyrinth seal part at the time of slow revolution with a simple and inexpensive structure by supporting a labyrinth on a diaphragm free of slide motion, and making energizing force of the spring and fluid pressure both act on the labyrinth. CONSTITUTION:A labyrinth 9' is supported on a guide groove 15 installed in a diaphragm 5' free of slide motion in the radial direction, while a spring is interposed between them. A pocket 12, making this labyrinth 9' act in its contraction direction, is interconnected to the low pressure side by a drill hole 10. In addition, a pocket 13, making the labyrinth 9' act in its expanding direction, is interconnected to the high pressure side by a drill hole 11. At the time of high speed of an impeller 3 tightly attached to a turning shaft 2, the labyrinth 9' is expanded wide and a proper clearance size 12 to the impeller 3 is maintained. On the other hand, at the time of low speed, the labyrinth 9' is contacted by the spring 14, and the proper clearance size 12 is maintained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62240735A JPS6483891A (en) | 1987-09-28 | 1987-09-28 | Labyrinth sealing device for hydraulic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62240735A JPS6483891A (en) | 1987-09-28 | 1987-09-28 | Labyrinth sealing device for hydraulic machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6483891A true JPS6483891A (en) | 1989-03-29 |
Family
ID=17063920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62240735A Pending JPS6483891A (en) | 1987-09-28 | 1987-09-28 | Labyrinth sealing device for hydraulic machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6483891A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011058481A (en) * | 2009-09-14 | 2011-03-24 | Toshiba Corp | Seal structure of hydraulic machine, and hydraulic machine equipped with the same |
| JP2014521861A (en) * | 2011-07-26 | 2014-08-28 | ヌオーヴォ ピニォーネ ソシエタ ペル アチオニ | Centrifugal impeller and turbomachine |
-
1987
- 1987-09-28 JP JP62240735A patent/JPS6483891A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011058481A (en) * | 2009-09-14 | 2011-03-24 | Toshiba Corp | Seal structure of hydraulic machine, and hydraulic machine equipped with the same |
| JP2014521861A (en) * | 2011-07-26 | 2014-08-28 | ヌオーヴォ ピニォーネ ソシエタ ペル アチオニ | Centrifugal impeller and turbomachine |
| US9567864B2 (en) | 2011-07-26 | 2017-02-14 | Nuovo Pignone Spa | Centrifugal impeller and turbomachine |
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