JPS57206531A - Liquid pressure pipe expanding device - Google Patents
Liquid pressure pipe expanding deviceInfo
- Publication number
- JPS57206531A JPS57206531A JP56092903A JP9290381A JPS57206531A JP S57206531 A JPS57206531 A JP S57206531A JP 56092903 A JP56092903 A JP 56092903A JP 9290381 A JP9290381 A JP 9290381A JP S57206531 A JPS57206531 A JP S57206531A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- liquid pressure
- liquid
- heat transmission
- lead
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/051—Deforming double-walled bodies
Abstract
PURPOSE:To expand a pipe without flawing the inside surface of a pipe, by covering a liquid pressure lead-in pipe which has pierce-provided holes for making a press-in fluid flow in an out, on the surface of a rigid pipe, with a flexible pipe, forming a pipe expanding jig, fitting it into a heat transmission pipe, etc., and leading in a pressurized fluid. CONSTITUTION:Holes for making a pressuried fluid flow in are pierce-provided dispersively on a liquid pressure lead-in pipe 1, and it is installed into a heat transmission pipe 7. To this lead-in pipe 1, a flexible pipe 2 is idly fitted and is fastened by clamping metal fittings 3 so as to be liquid-tight and endurable against pressure. An ''O'' ring 4 is made to go along the internal side circumferential edge of said clamp metal fittings, and the flexible pipe 2 is fit-installed elastically. The circumference of the side being near an opening 8 of the liquid pressure lead-in pipe 1 is covered with a reinforcing socket 5, and the metal fittings 3 and the ''O'' ring 4 are reinforced. When pressure is raised by inserting this jig into the heat transmission pipe 7 and pressing-in a pressurized liquid into the liquid pressure lead-in pipe 1, the liquid flows out from each hole, and the flexible pipe 2 tightly adhering to the liquid pressure lead-in pipe 1 is expanded. In this way, the heat transmission pipe 7 is uniformly expanded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56092903A JPS57206531A (en) | 1981-06-15 | 1981-06-15 | Liquid pressure pipe expanding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56092903A JPS57206531A (en) | 1981-06-15 | 1981-06-15 | Liquid pressure pipe expanding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57206531A true JPS57206531A (en) | 1982-12-17 |
Family
ID=14067429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56092903A Pending JPS57206531A (en) | 1981-06-15 | 1981-06-15 | Liquid pressure pipe expanding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57206531A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0847734A (en) * | 1994-03-16 | 1996-02-20 | Babcock & Wilcox Co:The | Flexible mandrel expandable by liquid pressure |
| JP2016168601A (en) * | 2015-03-11 | 2016-09-23 | 伸和コントロールズ株式会社 | Pipe expansion method of heat transfer pipe |
-
1981
- 1981-06-15 JP JP56092903A patent/JPS57206531A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0847734A (en) * | 1994-03-16 | 1996-02-20 | Babcock & Wilcox Co:The | Flexible mandrel expandable by liquid pressure |
| JP2016168601A (en) * | 2015-03-11 | 2016-09-23 | 伸和コントロールズ株式会社 | Pipe expansion method of heat transfer pipe |
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