CN201897429U - Structure for preventing heat exchanging tube from deforming due to heating - Google Patents
Structure for preventing heat exchanging tube from deforming due to heating Download PDFInfo
- Publication number
- CN201897429U CN201897429U CN2010205754322U CN201020575432U CN201897429U CN 201897429 U CN201897429 U CN 201897429U CN 2010205754322 U CN2010205754322 U CN 2010205754322U CN 201020575432 U CN201020575432 U CN 201020575432U CN 201897429 U CN201897429 U CN 201897429U
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- China
- Prior art keywords
- heat exchanger
- exchanger tube
- tube
- welded
- heat exchanging
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- 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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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a structure for preventing a heat exchanging tube from deforming due to heating; a section of corrugated pipe is sleeved outside one end of the heat exchanging tube, the other end of the corrugated pipe is welded with a through hole corresponding to a tube plate, and the other end of the heat exchanging tube is welded with another through hole corresponding to another tube plate. The structure has the advantages of simple structure, small processing difficulty, low cost, high heat transfer efficiency, long running period, long service life and good sealing performance, and is particularly suitable for a preheater with strict leak requirements.
Description
Technical field the utility model relates to a kind of preheater, particularly calandria preheater.
Background technology is present, and preheater is widely used in the industries such as oil, chemical industry, metallurgy, electric power.Preheater commonly used has calandria preheater and heat pipe-type preheater, wherein the structure of calandria preheater generally is: it has a casing, be provided with two vertical tube sheets that are fixed thereon with two ends periphery at regular intervals in the casing, be provided with heat exchanger tube in the through hole of these two vertical tube sheet correspondences, one end and a tube sheet are weldingly connected, the other end and another tube sheet flexibly connect with stuffing-box, promptly between heat exchanger tube and tube sheet filled with spring add bolt, nut compresses.Its weak point is: complex structure not only, process loaded down with trivial details, cost of investment is high, and leaks easily, and cold and hot medium is obscured, and influences heat transfer property simultaneously again.
The summary of the invention the purpose of this utility model is to provide that a kind of processing simple in structure, easy, cost are low, a kind of prevention heat exchanger tube expanded by heating deformed configurations of good seal performance.
The utility model mainly is living between heat exchanger tube and the tube sheet to be connected change into by excessive fixedly connected of bellows.Calandria preheater has a casing, is provided with two vertical tube sheets that are fixed thereon with two ends periphery at regular intervals in the casing, is provided with heat exchanger tube in the through hole of these two vertical tube sheet correspondences.This heat exchanger tube one end outside is with one section bellows, is interference fit between itself and the heat exchanger tube preferably.The other end of this bellows is welded on the through hole of a tube sheet correspondence.The other end of above-mentioned heat exchanger tube is welded on the through hole of another tube sheet correspondence, and it can be directly to be welded on the through hole, also can be welded on the through hole indirectly by connector.Above-mentioned two tube sheets and casing are fixedly connected as fixed tube sheet.
When cold medium passes through from heat exchanger tube, high-temperature flue gas outside heat exchanger tube through out-of-date both just carry out exchange heat, heat exchanger tube is heated to produce and expands in this exchange heat, makes it to an end elongation strain that has bellows, and whole deflection takes place in bellows.Because between heat exchanger tube and the bellows is interference fit, bellows is fixedlyed connected with the casing tube sheet, so flue gas can not be leaked in the cold medium.
The utility model compared with prior art has following advantage:
1, simple in structure, difficulty of processing is little, cost is low.
2, heat transfer efficiency height can long-term operation, long service life.
3, good seal performance is specially adapted to the strict preheater that requires of revealing.
Description of drawings
Fig. 1 is that simplified schematic diagram is cutd open by the utility model user mode office.
Fig. 2 is the enlarged diagram of I among Fig. 1.
Fig. 3 is the enlarged diagram of II among Fig. 1.
The specific embodiment a kind ofly prevents the user mode office of heat exchanger tube expanded by heating deformed configurations to cut open in the simplified schematic diagram shown in Figure 1, calandria preheater has a casing 1, be provided with in the casing and two ends two vertical tube sheets 2 at regular intervals, above-mentioned two tube sheets are fixedlyed connected with casing and are fixed tube sheet.Heat exchanger tube 3 one end outsides are with one section bellows 4, are interference fit between itself and the heat exchanger tube.The other end of this bellows is welded on the through hole of a tube sheet correspondence, as shown in Figure 2.The other end of above-mentioned heat exchanger tube is welded on the through hole of another tube sheet correspondence, as shown in Figure 3 indirectly by circular connector 5.
Claims (3)
1. structure of preventing the heat exchanger tube temperature distortion, be provided with two vertical tube sheets that are fixed thereon with two ends periphery at regular intervals in the casing of calandria preheater, be provided with heat exchanger tube in the through hole of these two vertical tube sheet correspondences, it is characterized in that: this heat exchanger tube one end outside is with one section bellows, the other end of this bellows is welded on the through hole of a tube sheet correspondence, and the other end of above-mentioned heat exchanger tube is welded on the through hole of another tube sheet correspondence.
2. a kind of structure of preventing the heat exchanger tube temperature distortion according to claim 1 is characterized in that: be interference fit between this bellows and the heat exchanger tube.
3. a kind of structure of preventing the heat exchanger tube temperature distortion according to claim 1 and 2, it is characterized in that: heat exchanger tube is welded on the through hole indirectly by connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205754322U CN201897429U (en) | 2010-10-25 | 2010-10-25 | Structure for preventing heat exchanging tube from deforming due to heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205754322U CN201897429U (en) | 2010-10-25 | 2010-10-25 | Structure for preventing heat exchanging tube from deforming due to heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897429U true CN201897429U (en) | 2011-07-13 |
Family
ID=44255335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205754322U Expired - Fee Related CN201897429U (en) | 2010-10-25 | 2010-10-25 | Structure for preventing heat exchanging tube from deforming due to heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607322A (en) * | 2012-03-31 | 2012-07-25 | 邓浩 | Elastic connecting component for heat exchanger |
-
2010
- 2010-10-25 CN CN2010205754322U patent/CN201897429U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607322A (en) * | 2012-03-31 | 2012-07-25 | 邓浩 | Elastic connecting component for heat exchanger |
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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: 20110713 Termination date: 20131025 |