CN200965133Y - Pipeline extension device - Google Patents
Pipeline extension device Download PDFInfo
- Publication number
- CN200965133Y CN200965133Y CN 200620124881 CN200620124881U CN200965133Y CN 200965133 Y CN200965133 Y CN 200965133Y CN 200620124881 CN200620124881 CN 200620124881 CN 200620124881 U CN200620124881 U CN 200620124881U CN 200965133 Y CN200965133 Y CN 200965133Y
- Authority
- CN
- China
- Prior art keywords
- short tube
- welded
- tube
- inner sleeve
- bellows
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides an expansion bend, comprising a left short tube, a right short tube, and an inner sleeve. The left tube and the right tube are arranged coaxially; the inner sleeve is welded inside the right short tube; a sylphon bellows is arranged between the left short tube and the right short tube; the left end of the sylphon bellows is welded at the right side of the left short tube and the right end of the sylphon bellows is welded at the left side of the right short tube; the inner wall of the left short tube is also provided with steps. The model has the beneficial effects of fire resistance, good leakproofness, long service life, and safe and reliable performance.
Description
Affiliated technical field
The utility model relates to a kind of expansion bend, especially a kind of pipeline extension device.
Background technique
Use expansion bend at present at industrial pipeline, form by the left short tube that is installed on same axis, right short tube and inner sleeve, inner sleeve and right short tube are welded to connect, and stretch in the left short tube, pass through seal with O ring between inner sleeve and the left short tube, it exists heatproof low, only anti-temperature below 120 ℃ is in addition because O shape circle is rubber product, quick abrasion, easily cause gas leakage, cause potential safety hazard.
Summary of the invention
In order to overcome the deficiency of existing expansion bend non-refractory and poor stability, the utility model provides a kind of pipeline extension device.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of pipeline extension device, comprise left short tube, right short tube, inner sleeve, left side short tube and the coaxial setting of right short tube, inner sleeve is welded in the right short tube, between left side short tube and the right short tube bellows is arranged, the left end of bellows is welded on the right side of left short tube, and the right-hand member of bellows is welded on the left side of right short tube, also has step at left short tube inwall.
The beneficial effects of the utility model are high temperature resistant, good airproof performance, and long service life, safe and reliable.
Description of drawings
Fig. 1 is embodiment's a sectional structural map
Among the figure: 1. left short tube; 2. step; 3. bellows; 4. inner sleeve; 5. right short tube.
Embodiment
As shown in Figure 1, a kind of pipeline extension device, comprise left short tube 1, right short tube 5, inner sleeve 4, left side short tube 1 and right short tube 5 coaxial settings, inner sleeve 4 is welded in the right short tube 5, between left short tube 1 and the right short tube 5 bellows 3 is arranged, the left end of bellows 3 is welded on the right side of left short tube 1, the right-hand member of bellows 3 is welded on the left side of right short tube 5, also has step at left short tube 1 inwall, plays position-limiting action.Owing to adopt bellows 3 as elastic member, can anti-350 ℃ high temperature, and can not wear and tear, long service life, sealing is reliable.
Claims (2)
1, a kind of pipeline extension device, comprise left short tube, right short tube, inner sleeve, left side short tube and the coaxial setting of right short tube, inner sleeve is welded in the right short tube, it is characterized in that: between described left short tube and the described right short tube bellows is arranged, the left end of bellows is welded on the right side of described left short tube, and the right-hand member of bellows is welded on the left side of right short tube.
2, pipeline extension device according to claim 1 is characterized in that: described left short tube inwall also has step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124881 CN200965133Y (en) | 2006-10-27 | 2006-10-27 | Pipeline extension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620124881 CN200965133Y (en) | 2006-10-27 | 2006-10-27 | Pipeline extension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200965133Y true CN200965133Y (en) | 2007-10-24 |
Family
ID=38869150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620124881 Expired - Fee Related CN200965133Y (en) | 2006-10-27 | 2006-10-27 | Pipeline extension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200965133Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343385A (en) * | 2017-12-29 | 2018-07-31 | 中国石油天然气股份有限公司 | Telescopic device and its processing method and tubing string |
-
2006
- 2006-10-27 CN CN 200620124881 patent/CN200965133Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343385A (en) * | 2017-12-29 | 2018-07-31 | 中国石油天然气股份有限公司 | Telescopic device and its processing method and tubing string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071024 Termination date: 20091127 |