CN104251636A - Heat exchange tube and double-tube sheet linkage structure - Google Patents
Heat exchange tube and double-tube sheet linkage structure Download PDFInfo
- Publication number
- CN104251636A CN104251636A CN201310254731.4A CN201310254731A CN104251636A CN 104251636 A CN104251636 A CN 104251636A CN 201310254731 A CN201310254731 A CN 201310254731A CN 104251636 A CN104251636 A CN 104251636A
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- CN
- China
- Prior art keywords
- tube
- tube sheet
- heat exchange
- heat exchanger
- tube plate
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Abstract
The invention discloses a heat exchange tube and a double-tube sheet linkage structure. The double-tube sheet linkage structure comprises an outer tube sheet, a heat exchange tube and an inner tube sheet, wherein the heat exchange tube is in interference fit with the outer tube sheet and the inner tube sheet and is a reducer tube, and the outer diameters of the parts, matched with the outer tube sheet and the inner tube sheet, of the heat exchange tube are greater than those of the residual parts of the heat exchange tube; the heat exchange tube and the outer tube sheet are connected at an orifice by virtue of a welding permanent connection structure; the further improvements are as follows: the interference magnitude of matching between the heat exchange tube and the inner tube sheet is greater than that of matching between the heat exchange tube and the outer tube sheet; the hole diameter of the outer tube sheet is greater than that of the inner tube sheet; the outer diameter of the part, matched with the outer tube sheet, of the heat exchange tube is greater than that of the part, matched with the inner tube sheet, of the heat exchange tube. The double-tube sheet linkage structure is capable of effectively improving the seal reliability and connection strength between a heat exchanger and the inner and outer tube sheets, effectively preventing leakage, avoiding repair caused by leakage at tube ends and even a complete scrapping condition and obviously saving the inspection and repair costs.
Description
Technical field
The present invention relates to a kind of heat exchanger heat-exchanging tube and tube sheet syndeton.
Background technology
In the manufacture process of dual-tubesheet heat interchanger, the connected mode of heat exchanger tube and inside and outside tube sheet is strength and buckling, and this connected mode makes dual-tubesheet heat interchanger restrain the problem that leakage in use easily occurs.The reason causing heat exchanger pipe end to reveal by analysis mainly contains following aspect: 1) produce heat exchanger because of expanded joint insufficient strength and inside and outside tube sheet poorly sealed, cause pipe end to leak; 2) leakage damage being caused to pore and heat exchanger tube because of brute force assembling and causes in manufacture process.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of heat exchanger tube and the double tubesheet syndeton that can significantly improve the reliability that heat exchanger and inside and outside tube sheet seal.
The present invention is achieved through the following technical solutions technical goal.
Heat exchanger tube and double tubesheet syndeton, comprise outer tube plate, heat exchanger tube and internal tube plate; Described heat exchanger tube and outer tube plate, internal tube plate interference fit, its improvements are: described heat exchanger tube is reducer pipe, and the external diameter of itself and outer tube plate, internal tube plate mating part is greater than the external diameter of remainder; Described heat exchanger tube and outer tube plate are fixedly connected by welding in aperture anatomical connectivity.
Further improvement is: the magnitude of interference that described heat exchanger tube coordinates with internal tube plate is greater than its magnitude of interference coordinated with outer tube plate.
Further improvement is: described outer tube plate bore dia is greater than internal tube plate bore dia.
Further improvement is: described outer tube plate bore dia is greater than internal tube plate bore dia 0.1 ~ 0.15mm.
Further improvement is: the external diameter of described heat exchanger tube and outer tube plate mating part is greater than the external diameter of itself and internal tube plate mating part.
Further improvement is: the external diameter of described heat exchanger tube and outer tube plate mating part is greater than the external diameter 0.1 ~ 0.15mm of itself and internal tube plate mating part.
The present invention compared with prior art, has following good effect:
1, on the basis of heat exchanger tube and outer tube plate, internal tube plate interference fit, heat exchanger tube and outer tube plate are fixedly connected by welding in aperture anatomical connectivity, like this, both significantly increase the reliability that heat exchanger tube and outer tube plate, internal tube plate seal, also significantly increase the bonding strength of heat exchanger tube and outer tube plate, internal tube plate.
2, outer tube plate bore dia is greater than internal tube plate bore dia, solves existing heat exchanger tube and passes the problem that on outer tube plate, internal tube plate, same diameter endoporus is more bothersome, improve manufacture efficiency.
3, the magnitude of interference that heat exchanger tube coordinates with internal tube plate is greater than its magnitude of interference coordinated with outer tube plate, can further improve the reliability that heat exchanger tube and outer tube plate, internal tube plate seal.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below with reference to the accompanying drawings and the invention will be further described in conjunction with the embodiments.
Heat exchanger tube shown in accompanying drawing and double tubesheet syndeton, comprise outer tube plate 1, heat exchanger tube 2 and internal tube plate 3; Heat exchanger tube 2 and outer tube plate 1, internal tube plate 3 interference fit, heat exchanger tube 2 is reducer pipe, and the external diameter of itself and outer tube plate 1, internal tube plate 3 mating part is greater than the external diameter of remainder; Heat exchanger tube 2 and outer tube plate 1 structure 4 that is fixedly connected by welding in aperture is connected.
The magnitude of interference that heat exchanger tube 2 coordinates with internal tube plate 3 is greater than its magnitude of interference coordinated with outer tube plate 1.
Outer tube plate 1 bore dia is greater than internal tube plate 3 bore dia, and in the present embodiment, outer tube plate 1 bore dia is greater than internal tube plate 3 bore dia 0.1 ~ 0.15mm.
Heat exchanger tube 2 and the external diameter of outer tube plate 1 mating part are greater than its external diameter with internal tube plate 3 mating part, and in the present embodiment, the external diameter of heat exchanger tube 2 and outer tube plate 1 mating part is greater than the external diameter 0.1 ~ 0.15mm of itself and internal tube plate 3 mating part.
In the present embodiment, outer tube plate 1 and heat exchanger tube 2 connected mode are that first intensity postwelding pastes swollen, internal tube plate 3 and heat exchanger tube 2 connected mode are strength and buckling, and the strength and buckling of internal tube plate 3 and the swollen whole employing Hydraulic Expansion of the subsides of outer tube plate 1, internal tube plate 3 expanded joint adopts twice expanded joint method.
Claims (6)
1. heat exchanger tube and a double tubesheet syndeton, comprises outer tube plate (1), heat exchanger tube (2) and internal tube plate (3); Described heat exchanger tube (2) and outer tube plate (1), internal tube plate (3) interference fit, is characterized in that: described heat exchanger tube (2) is reducer pipe, and the external diameter of itself and outer tube plate (1), internal tube plate (3) mating part is greater than the external diameter of remainder; Described heat exchanger tube (2) and outer tube plate (1) structure (4) that is fixedly connected by welding in aperture is connected.
2. heat exchanger tube according to claim 1 and double tubesheet syndeton, is characterized in that: the magnitude of interference that described heat exchanger tube (2) coordinates with internal tube plate (3) is greater than its magnitude of interference coordinated with outer tube plate (1).
3. heat exchanger tube according to claim 1 and 2 and double tubesheet syndeton, is characterized in that: described outer tube plate (1) bore dia is greater than internal tube plate (3) bore dia.
4. heat exchanger tube according to claim 3 and double tubesheet syndeton, is characterized in that: described outer tube plate (1) bore dia is greater than internal tube plate (3) bore dia 0.1 ~ 0.15mm.
5. heat exchanger tube according to claim 1 and 2 and double tubesheet syndeton, is characterized in that: the external diameter of described heat exchanger tube (2) and outer tube plate (1) mating part is greater than the external diameter of itself and internal tube plate (3) mating part.
6. heat exchanger tube according to claim 5 and double tubesheet syndeton, is characterized in that: the external diameter of described heat exchanger tube (2) and outer tube plate (1) mating part is greater than the external diameter 0.1 ~ 0.15mm of itself and internal tube plate (3) mating part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254731.4A CN104251636A (en) | 2013-06-25 | 2013-06-25 | Heat exchange tube and double-tube sheet linkage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254731.4A CN104251636A (en) | 2013-06-25 | 2013-06-25 | Heat exchange tube and double-tube sheet linkage structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104251636A true CN104251636A (en) | 2014-12-31 |
Family
ID=52186757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310254731.4A Pending CN104251636A (en) | 2013-06-25 | 2013-06-25 | Heat exchange tube and double-tube sheet linkage structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104251636A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115574649A (en) * | 2022-11-24 | 2023-01-06 | 四川科新机电股份有限公司 | Double-tube-plate heat exchanger and machining and forming method thereof |
-
2013
- 2013-06-25 CN CN201310254731.4A patent/CN104251636A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115574649A (en) * | 2022-11-24 | 2023-01-06 | 四川科新机电股份有限公司 | Double-tube-plate heat exchanger and machining and forming method thereof |
| CN115574649B (en) * | 2022-11-24 | 2023-03-14 | 四川科新机电股份有限公司 | Double-tube-plate heat exchanger and machining and forming method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141231 |