JPS5569400A - Leak preventive method for liquefied fuel pipe flange - Google Patents
Leak preventive method for liquefied fuel pipe flangeInfo
- Publication number
- JPS5569400A JPS5569400A JP14229178A JP14229178A JPS5569400A JP S5569400 A JPS5569400 A JP S5569400A JP 14229178 A JP14229178 A JP 14229178A JP 14229178 A JP14229178 A JP 14229178A JP S5569400 A JPS5569400 A JP S5569400A
- Authority
- JP
- Japan
- Prior art keywords
- flange
- leakage
- fuel pipe
- liquefied fuel
- temperature difference
- 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
Landscapes
- Pipeline Systems (AREA)
Abstract
PURPOSE: To prevent leakage of liquefied fuel, by externally cooling the flange of fuel pipe, so that the temperature difference between the flange and the bolt center at the time of pipe cool-down.
CONSTITUTION: A detailed study of relationships between packing, face pressure and cooling speed of a flange coupling used for LNG piping has led to a conclusion that the leakage from the flange coupling at the time of cool-down is attributable to a temperature difference between the flange and bolts used for fastening the flange, in other words, a change in the flange, packings and their face pressure. The temperature of the flange and the center of the bolt is observed and then the flange is so cooled that the allowable temperature difference is about half that for generating the leakage. This control method of differential temperature is practicable for preventing the leakage from the flange.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14229178A JPS5569400A (en) | 1978-11-20 | 1978-11-20 | Leak preventive method for liquefied fuel pipe flange |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14229178A JPS5569400A (en) | 1978-11-20 | 1978-11-20 | Leak preventive method for liquefied fuel pipe flange |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5569400A true JPS5569400A (en) | 1980-05-24 |
Family
ID=15311955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14229178A Pending JPS5569400A (en) | 1978-11-20 | 1978-11-20 | Leak preventive method for liquefied fuel pipe flange |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5569400A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5232123A (en) * | 1975-09-06 | 1977-03-11 | Ishikawajima Harima Heavy Ind Co Ltd | Sealing method and device of flange jointing in low temperature storag e device |
-
1978
- 1978-11-20 JP JP14229178A patent/JPS5569400A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5232123A (en) * | 1975-09-06 | 1977-03-11 | Ishikawajima Harima Heavy Ind Co Ltd | Sealing method and device of flange jointing in low temperature storag e device |
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