CN204924011U - Seal structure of heat exchange tube and tube sheet - Google Patents
Seal structure of heat exchange tube and tube sheet Download PDFInfo
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- CN204924011U CN204924011U CN201520633056.0U CN201520633056U CN204924011U CN 204924011 U CN204924011 U CN 204924011U CN 201520633056 U CN201520633056 U CN 201520633056U CN 204924011 U CN204924011 U CN 204924011U
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- tube
- heat exchange
- exchange tube
- heat exchanger
- tubesheet holes
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Abstract
The utility model relates to a seal structure, specific seal structure of heat exchange tube and tube sheet that says so belongs to heat exchange tube technical field. It includes tube sheet and heat exchange tube, and in the heat exchange tube stretched into tubesheet holes, the one end of heat exchange tube was the tube side side, the tube side side of heat exchange tube stretch into among the tubesheet holes with tube sheet welded fastening. The other end of heat exchange tube stretches out tubesheet holes for shell side side, the shell side side of heat exchange tube. The shell side side of being close to the heat exchange tube in the tubesheet holes is equipped with a plurality of seal groove, and the heat exchange tube stretches into tubesheet holes inside and sets up the oriented outer convex structure that has expanded separately, and seal groove and tubesheet holes inner wall are hugged closely to the structure that has expanded of heat exchange tube. The utility model discloses set up the seal groove in the shell side side to improve shell side side seal nature, prevent that the shell side medium from getting into the clearance of tube sheet and heat exchange tube, reduce the erosion of shell side side corrosive medium to heat exchange tube and tube sheet, prolongs the service life of the device, reduce stress corrosion's risk, reduced the running cost of equipment.
Description
Technical field
The utility model relates to a kind of hermetically-sealed construction, specifically the hermetically-sealed construction of a kind of heat exchanger tube and tube sheet, belongs to heat exchanger tube technical field.
Background technology
At present tubular heat exchanger exchanger tubes and tubesheets connected mode be welding and expanded joint, in order to prevent heat exchanger tube from shaking the crevice corrosion caused the gap of the existence between the impact of tube sheet and tube welding joint and tube-to-tube sheet connection, the mode of mechanical expanding and flexible expand tube is usually adopted to carry out the subsides of tube-to-tube sheet connection hole swollen.The expanded joint that existing intensity is swollen just ensures that the intensity of its tube-to-tube sheet connection connects, and the position of its expansion-joint structure, near tube side side, can not effectively prevent medium from entering from shell side side.
Because exchanger heat exchanged form carries out by the temperature difference of shell journey medium the object that heat trnasfer reaches heat exchange.In oil-refining chemical industry, have various corrosive material in shell side medium, in use under the effect of load and temperature, these media can penetrate into tubesheet holes inside along the gap between tube-to-tube sheet connection.The cold survey of heat exchanger running, hot top-cross are for change, and interior media is in the cyclic process supplementing and evaporate, and this makes the concentration of medium in gap constantly raise.Thus caused perforation and the local corrosion that crevice corrosion causes heat exchanger tube, due to concentration of medium raise temperature, stress acting in conjunction in addition under can produce stress corrosion to specific material, accelerate the cracking of tube sheet and heat exchanger tube.Great hidden danger is brought to the safe handling of equipment.By arranging at close shell side side pipe plate hole the effect that the swollen groove structure of sealing reaches sealing.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, thus provides the hermetically-sealed construction of a kind of heat exchanger tube and tube sheet, arranges seal groove in shell side side, thus improves shell side side seal, reduces the erosion of shell side side Korrosionsmedium exchange heat pipe and tube sheet.
According to the technical scheme that the utility model provides, the hermetically-sealed construction of heat exchanger tube and tube sheet comprises tube sheet and heat exchanger tube, and tube sheet is provided with tubesheet holes, it is characterized in that: heat exchanger tube stretches in tubesheet holes, one end of heat exchanger tube is tube side side, and the tube side side of heat exchanger tube is stretched in tubesheet holes and fixed with Tube-sheet Welding; The other end of heat exchanger tube is shell side side, the shell side side protruded tube plate hole of heat exchanger tube; Shell side side near heat exchanger tube in tubesheet holes is provided with several seal grooves, and heat exchanger tube stretches into tubesheet holes inside and is arranged with the outwardly structure that bulges, and the structure that bulges of heat exchanger tube is close to seal groove and tubesheet holes inwall.
Further, the groove of seal groove to be cross section be rectangle.
Compared with the prior art the utility model has the following advantages:
The utility model structure is simple, compact, reasonable, arranges seal groove in shell side side, thus improves shell side side seal, prevents shell side medium from entering in the gap of tube sheet and heat exchanger tube, reduces the erosion of shell side side Korrosionsmedium exchange heat pipe and tube sheet; Extend the service life of equipment, reduce the risk of stress corrosion, reduce the operating cost of equipment.
Accompanying drawing explanation
Fig. 1 is the utility model front view.
Description of reference numerals: 1-tube sheet, 2-heat exchanger tube, 3-seal groove, 4-bulge structure.
Detailed description of the invention
Embodiment in is by reference to the accompanying drawings further described by the utility model below:
As shown in Figure 1, the utility model mainly comprises tube sheet 1 and heat exchanger tube 2, and tube sheet 1 is provided with tubesheet holes.Heat exchanger tube 2 stretches in tubesheet holes, and one end of heat exchanger tube 2 is tube side side, and the tube side side of heat exchanger tube 2 is stretched in tubesheet holes and is welded and fixed with tube sheet 1.
The other end of heat exchanger tube 2 is shell side side, the shell side side protruded tube plate hole of heat exchanger tube 2.Shell side side near heat exchanger tube 2 in tubesheet holes is provided with several seal grooves 3, and heat exchanger tube 2 stretches into tubesheet holes inside and is arranged with the outwards outer structure 4 that bulges protruded, and the structure 4 that bulges of heat exchanger tube 2 is close to seal groove 3 and tubesheet holes inwall.
In embodiment as shown in Figure 1, described seal groove 3 for cross section be the groove of rectangle.
The described structure 4 that bulges is formed by expanding joint process, and the structure that bulges 4 is close to seal groove 3 and tubesheet holes inwall, improves shell side side seal, prevents shell side medium from entering in the gap of tube sheet and heat exchanger tube, reduces the erosion of shell side side Korrosionsmedium exchange heat pipe and tube sheet; Extend the service life of equipment, reduce the risk of stress corrosion, reduce the operating cost of equipment.
Claims (2)
1. the hermetically-sealed construction of a heat exchanger tube and tube sheet, comprise tube sheet (1) and heat exchanger tube (2), tube sheet (1) is provided with tubesheet holes, it is characterized in that: heat exchanger tube (2) stretches in tubesheet holes, one end of heat exchanger tube (2) is tube side side, and the tube side side of heat exchanger tube (2) is stretched in tubesheet holes and is welded and fixed with tube sheet (1); The other end of heat exchanger tube (2) is shell side side, the shell side side protruded tube plate hole of heat exchanger tube (2); Shell side side near heat exchanger tube (2) in tubesheet holes is provided with several seal grooves (3), heat exchanger tube (2) stretches into tubesheet holes inside and is arranged with the outwardly structure that bulges (4), and the structure that bulges (4) of heat exchanger tube (2) is close to seal groove (3) and tubesheet holes inwall.
2. the hermetically-sealed construction of heat exchanger tube as claimed in claim 1 and tube sheet, is characterized in that: described seal groove (3) for cross section be the groove of rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520633056.0U CN204924011U (en) | 2015-08-20 | 2015-08-20 | Seal structure of heat exchange tube and tube sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520633056.0U CN204924011U (en) | 2015-08-20 | 2015-08-20 | Seal structure of heat exchange tube and tube sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924011U true CN204924011U (en) | 2015-12-30 |
Family
ID=54973128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520633056.0U Active CN204924011U (en) | 2015-08-20 | 2015-08-20 | Seal structure of heat exchange tube and tube sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204924011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088284A (en) * | 2017-12-04 | 2018-05-29 | 唐山三友集团兴达化纤有限公司 | A kind of zirconium heat exchange of heat pipe |
| CN108106483A (en) * | 2017-12-04 | 2018-06-01 | 唐山三友集团兴达化纤有限公司 | A kind of new card |
-
2015
- 2015-08-20 CN CN201520633056.0U patent/CN204924011U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088284A (en) * | 2017-12-04 | 2018-05-29 | 唐山三友集团兴达化纤有限公司 | A kind of zirconium heat exchange of heat pipe |
| CN108106483A (en) * | 2017-12-04 | 2018-06-01 | 唐山三友集团兴达化纤有限公司 | A kind of new card |
| CN108088284B (en) * | 2017-12-04 | 2020-05-22 | 唐山三友集团兴达化纤有限公司 | Zirconium tube heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214104 yyanshan Road, No. 29, anzhen Town, Xishan District, Wuxi, Jiangsu Patentee after: Wuxi Ding Bang heat exchange equipment Limited by Share Ltd Address before: No. 10, yroshan Road, anzhen Town, Xishan District, Wuxi, Jiangsu Patentee before: Wuxi Dingbang Heat Exchange Equipment Co., Ltd. |