JPS5550933A - Pipe expanding mandrel - Google Patents
Pipe expanding mandrelInfo
- Publication number
- JPS5550933A JPS5550933A JP12358378A JP12358378A JPS5550933A JP S5550933 A JPS5550933 A JP S5550933A JP 12358378 A JP12358378 A JP 12358378A JP 12358378 A JP12358378 A JP 12358378A JP S5550933 A JPS5550933 A JP S5550933A
- Authority
- JP
- Japan
- Prior art keywords
- heat transfer
- working fluid
- transfer pipe
- mandrel
- force
- 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 enable the mandrel to be inserted even if the hole diameter of the pipe inlet owing to seal welding becomes smaller by fitting the sealing members that can expand the diameter to both end parts of the mandrel, respectively.
CONSTITUTION: When working fluid is introduced through a high pressure hose 8, it imparts pressure to an O-ring 6 while pressing the first piston valve 11. This causes a backup ring 3 to be force expanded in the diametral direction to close the spacing from a heat transfer pipe 14. The first piston valve 11 closes a radial channel 5. The pressure of the working fluid further passes through the radial channel 5' to force expand an elastic barrel 7. As a result, the backup ring 3' or O-ring 2' is force expanded, by which the spacing from the heat transfer pipe 14 is closed. Thereafter, the second piston valve 12 opens a communicating path 15, allowing the working fluid to flow into the space S between the mandrel 1 and heat transfer pipe 14. This working fluid acts upon the entire surface of the heat transfer pipe, thereby force expanding the same.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12358378A JPS5550933A (en) | 1978-10-09 | 1978-10-09 | Pipe expanding mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12358378A JPS5550933A (en) | 1978-10-09 | 1978-10-09 | Pipe expanding mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5550933A true JPS5550933A (en) | 1980-04-14 |
Family
ID=14864177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12358378A Pending JPS5550933A (en) | 1978-10-09 | 1978-10-09 | Pipe expanding mandrel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5550933A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037177A2 (en) * | 1980-03-24 | 1981-10-07 | HASKEL ENGINEERING & SUPPLY CO | Device for hydraulically expanding tubes |
| EP0058386A1 (en) * | 1981-02-17 | 1982-08-25 | Wilfried Busse | Mandrel and Method of pressure-sealed installation of a tube in a tube sheet or the like |
| EP0215294A2 (en) * | 1985-09-12 | 1987-03-25 | Balcke-Dürr AG | Apparatus for the hydraulic expansion of tubes |
-
1978
- 1978-10-09 JP JP12358378A patent/JPS5550933A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037177A2 (en) * | 1980-03-24 | 1981-10-07 | HASKEL ENGINEERING & SUPPLY CO | Device for hydraulically expanding tubes |
| EP0037177A3 (en) * | 1980-03-24 | 1982-07-14 | HASKEL ENGINEERING & SUPPLY CO | Device for hydraulically expanding tubes |
| EP0058386A1 (en) * | 1981-02-17 | 1982-08-25 | Wilfried Busse | Mandrel and Method of pressure-sealed installation of a tube in a tube sheet or the like |
| JPS57152333A (en) * | 1981-02-17 | 1982-09-20 | Butsuse Buirufuriito | Method of mounting pipe in pressure-tight manner in pipe plate, etc. and pressure forming mandrel executing said method |
| EP0215294A2 (en) * | 1985-09-12 | 1987-03-25 | Balcke-Dürr AG | Apparatus for the hydraulic expansion of tubes |
| EP0215294A3 (en) * | 1985-09-12 | 1987-09-30 | Balcke-Durr Ag | Apparatus for the hydraulic expansion of tubes |
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