JPS5765459A - Multi-stage shaft seal device - Google Patents
Multi-stage shaft seal deviceInfo
- Publication number
- JPS5765459A JPS5765459A JP13913580A JP13913580A JPS5765459A JP S5765459 A JPS5765459 A JP S5765459A JP 13913580 A JP13913580 A JP 13913580A JP 13913580 A JP13913580 A JP 13913580A JP S5765459 A JPS5765459 A JP S5765459A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- space
- sealing
- seals
- gas
- 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
Abstract
PURPOSE: To seal a shaft at high pressure and improve its sealing quality in a shaft sealing device where a plurality of sealing members are axially provided from a high pressure side to low pressure side with a distance apart, by introducing pressure at an equal pressure difference for each sealing member to a space between the sealing members.
CONSTITUTION: A two-stage shaft sealing device, in which an engine main unit 1 is divided into a working gas space 2 extended through a piston rod 4 and a driving chamber 3, consists mainly of the first and second seals 7, 8 at the lower side, and a space 9 is formed between the seals 7, 8. Here pressure Po in a gas sump 5 of the engine main unit 1 is introduced to a gas pressure adjusting device 10 to obtain prescribed pressure P1 (=Po/2), and this pressure P1 is introduced to the space 9. In this way, difference pressure applied to the seals 7, 8 is equalized, then the shaft sealing becomes capable at high pressure. The gas pressure adjusting device 10 is electrically conducted to flow a current in a solenoid 23 and move downward a piston 12 against a spring 25, thus the pressure P1 of Po/2 can be taken out from an output side connection part 22.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13913580A JPS5765459A (en) | 1980-10-04 | 1980-10-04 | Multi-stage shaft seal device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13913580A JPS5765459A (en) | 1980-10-04 | 1980-10-04 | Multi-stage shaft seal device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5765459A true JPS5765459A (en) | 1982-04-21 |
Family
ID=15238344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13913580A Pending JPS5765459A (en) | 1980-10-04 | 1980-10-04 | Multi-stage shaft seal device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5765459A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5786660A (en) * | 1980-11-14 | 1982-05-29 | Aioi Seiki Kk | High-pressure fluid sealing device for clearance between shaft and cylinder |
CN102878816A (en) * | 2012-09-19 | 2013-01-16 | 中国船舶重工集团公司第七〇三研究所无锡分部 | Lower part sealing device of circular cooler trolley |
-
1980
- 1980-10-04 JP JP13913580A patent/JPS5765459A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5786660A (en) * | 1980-11-14 | 1982-05-29 | Aioi Seiki Kk | High-pressure fluid sealing device for clearance between shaft and cylinder |
CN102878816A (en) * | 2012-09-19 | 2013-01-16 | 中国船舶重工集团公司第七〇三研究所无锡分部 | Lower part sealing device of circular cooler trolley |
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