CN201016615Y - Fixed tube sheet type prestressed heat exchanger - Google Patents
Fixed tube sheet type prestressed heat exchanger Download PDFInfo
- Publication number
- CN201016615Y CN201016615Y CNU2007200788091U CN200720078809U CN201016615Y CN 201016615 Y CN201016615 Y CN 201016615Y CN U2007200788091 U CNU2007200788091 U CN U2007200788091U CN 200720078809 U CN200720078809 U CN 200720078809U CN 201016615 Y CN201016615 Y CN 201016615Y
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- heat exchanger
- tube
- tube sheet
- cylindrical shell
- sheet type
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- Expired - Fee Related
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a fixed tube-plate pressed heat exchanger which includes a cylinder, tube sheets which are arranged at both ends of the cylinder and connected with the cylinder respectively a tube bundle component of a heat exchange tube and tube boxes with a nozzle which are connected with the two tube sheets respectively. The heat exchanger is characterized in that a circumferential weld is arranged on the cylinder. The two tube sheets are respectively connected with loaded welds, on which a support saddle is arranged. The utility model can reduce working thermal stress, can avoid dangerous stress state when stopping, can prolong service life and can improve reliability.
Description
Technical field:
The utility model belongs to the flow media field of heat transfer, specifically a kind of fixed tube sheet type prestressed heat exchanger that is applicable to that the shell journey temperature difference is bigger.
Background technology:
Fixed tube-sheet exchanger is to use tubular heat exchanger very widely.Because the manufacturing environment temperature is different with operating temperature, cylindrical shell, tube sheet and heat exchanger tube can produce the thermal expansion modified difference under the temperature difference.Because of tube sheet and cylindrical shell and heat exchanger tube fuse, for coordinating both modified differences, the material production compression that then swell increment is big is to shorten the size of its free wxpansion; The material production stretcher strain that swell increment is little to prolong its free wxpansion size, thermal (temperature difference) stress occurs thereby make between cylindrical shell and heat exchanger tube.
For solving the thermal (temperature difference) stress of fixed tube-sheet exchanger, traditional common method is to increase the elastic expansion joint or adopt floating head type, stuffing-box formula and U type pipe heat exchanger structure on cylindrical shell, the improvement of these structures is having important effect aspect the elimination thermal (temperature difference) stress, but because complex structure, shortcoming such as cause to reveal, structure is not compact, thereby reduced the stability of heat exchanger.
The utility model content:
The purpose of this utility model is in order to overcome the deficiency of existing fixed tube-sheet exchanger, a kind of thermal (temperature difference) stress can alleviate work the time is provided, occur dangerous stress when avoiding stopping simultaneously, improve the fixed tube sheet type prestressed heat exchanger of service life and reliability.
The purpose of this utility model is achieved in that
The utility model fixed tube sheet type prestressed heat exchanger, comprise cylindrical shell, band lays respectively at the tube sheet that the cylindrical shell two ends are connected with cylindrical shell and the tube bundle assembly of heat exchanger tube, the bobbin carriage that the band that is connected with two tube sheets is respectively taken over, it is characterized in that girth joint is arranged on the cylindrical shell, two tube sheet places have the loaded ring that is attached thereto respectively, and the supporting saddle is arranged on the loaded ring, during work, the supporting saddle is mounted on the basis.
Above-mentioned loaded ring is connected by bolt with tube sheet, and the folding dress is convenient.
All-in-one-piece reinforcement shell ring is with it arranged on the above-mentioned loaded ring, increase rigidity.
A girth joint is arranged on the heat exchanger cylindrical shell, apply axial prestress for tube bundle assembly integral body by loaded ring, in the heat exchanger cylindrical shell, introduce the internal stress opposite with thermal (temperature difference) stress, thermal (temperature difference) stress partial offset or counteracting fully when making heat exchanger in working order, thereby improve heat exchanger stress state in working order, to improve the service life and the reliability of heat exchanger.
Advantage of the present utility model:
1) temperature difference, pressure reduction and various constraints have systematically been considered, and have been directly to control the prestressing force size that convenient the manufacturing is easy to control.Can reduce the girth joint residual stress keeping under the stress state girth joint being carried out local heat treatmet.
Thermal (temperature difference) stress when 2) effectively alleviating work.
3) owing to the supporting saddle is connected on the loaded ring, loaded ring is fixed on the tube sheet, avoided heat exchanger when stopping, to cause the cylindrical shell unstability because of heat exchanger tube contraction, cylindrical shell pressurized, and be subjected to opposite tension with the tube sheet bonding pad at heat exchanger tube, new more dangerous stress occurs, improve service life and reliability.
Description of drawings:
Fig. 1 is a fixed tube sheet type prestressed heat exchanger schematic diagram.
The specific embodiment:
Referring to Fig. 1, by tube sheet 1, deflection plate 2, heat exchanger tube 3, the tube bundle assembly 5 that pull bar, distance sink tube 4 formed are arranged in cylindrical shell 6 and its two tube sheet and lay respectively at the cylindrical shell two ends and be connected with cylindrical shell.Two bobbin carriages 7 that band is taken over are connected with two tube sheet bolts respectively.Girth joint 8 is arranged on cylindrical shell.Two loaded rings 9 are connected with two tube sheets by bolt 10 respectively.Two supporting saddles 11, two are strengthened shell ring 12 and are welded as a whole with two loaded rings respectively.During work, the supporting saddle is installed on the basis.
When making the utility model, at first tube sheet is connected with bolting with loaded ring (loaded ring and the welding of reinforcement shell ring), subsequently with tube bundle assembly 5 assembly weldings, on the heat exchanger cylindrical shell, reserves a girth joint 8, cylindrical shell two ends and tube sheet 1 welding.Fix an end loaded ring 10 then, (or compression) other end loaded ring 10 gradually stretches, when tensile force (or compression stress) when reaching predetermined value, girth joint 8 is reserved in welding, after having welded, keep the plus load size constant, the girth joint 8 of postwelding is carried out local heat treatmet, cancel external force, at this moment the cylindrical shell pressurized.In the heat exchanger installation process, make cylindrical shell keep unstress state, fixed bearing saddle with the above-mentioned prestressing method that adds.The utility model heat exchanger is under dead ship condition, and heat exchanger tube is in extended state, and cylindrical shell is in normal condition; In working order down, heat exchanger tube expands and alleviates pulling force, even may eliminate pulling force.
Claims (3)
1. fixed tube sheet type prestressed heat exchanger, comprise cylindrical shell, band lays respectively at the tube sheet that the cylindrical shell two ends are connected with cylindrical shell and the tube bundle assembly of heat exchanger tube, the bobbin carriage that the band that is connected with two tube sheets is respectively taken over, it is characterized in that girth joint is arranged on the cylindrical shell, two tube sheet places have the loaded ring that is attached thereto respectively, and the supporting saddle is arranged on the loaded ring.
2. fixed tube sheet type prestressed heat exchanger according to claim 1 is characterized in that loaded ring is connected by bolt with tube sheet.
3. fixed tube sheet type prestressed heat exchanger according to claim 1 and 2 is characterized in that having on the loaded ring all-in-one-piece reinforcement shell ring with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200788091U CN201016615Y (en) | 2007-03-20 | 2007-03-20 | Fixed tube sheet type prestressed heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200788091U CN201016615Y (en) | 2007-03-20 | 2007-03-20 | Fixed tube sheet type prestressed heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201016615Y true CN201016615Y (en) | 2008-02-06 |
Family
ID=39057106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200788091U Expired - Fee Related CN201016615Y (en) | 2007-03-20 | 2007-03-20 | Fixed tube sheet type prestressed heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201016615Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102753928A (en) * | 2009-11-19 | 2012-10-24 | 法雷奥热系统公司 | Collector plate, collector box including such a plate, and heat exchanger fitted with such a box |
| CN107127433A (en) * | 2017-05-26 | 2017-09-05 | 南京工业大学 | A kind of coke drum butt welding process |
| CN107462091A (en) * | 2017-07-26 | 2017-12-12 | 李俊梅 | Tube-sheet heat exchanger |
| CN113804043A (en) * | 2021-09-30 | 2021-12-17 | 抚顺化工机械设备制造有限公司 | Welding method for middle section of fixed tube-plate heat exchanger |
-
2007
- 2007-03-20 CN CNU2007200788091U patent/CN201016615Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102753928A (en) * | 2009-11-19 | 2012-10-24 | 法雷奥热系统公司 | Collector plate, collector box including such a plate, and heat exchanger fitted with such a box |
| CN102753928B (en) * | 2009-11-19 | 2016-01-20 | 法雷奥热系统公司 | Tube plate, comprise the header of such plate and be equipped with the heat exchanger of such case |
| CN107127433A (en) * | 2017-05-26 | 2017-09-05 | 南京工业大学 | A kind of coke drum butt welding process |
| CN107127433B (en) * | 2017-05-26 | 2019-03-26 | 南京工业大学 | A kind of coke drum butt welding process |
| CN107462091A (en) * | 2017-07-26 | 2017-12-12 | 李俊梅 | Tube-sheet heat exchanger |
| CN113804043A (en) * | 2021-09-30 | 2021-12-17 | 抚顺化工机械设备制造有限公司 | Welding method for middle section of fixed tube-plate 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: 20080206 |