CN202403607U - Connecting structure between heat exchange tube head and tube plate in waste heat boiler - Google Patents
Connecting structure between heat exchange tube head and tube plate in waste heat boiler Download PDFInfo
- Publication number
- CN202403607U CN202403607U CN2012200260058U CN201220026005U CN202403607U CN 202403607 U CN202403607 U CN 202403607U CN 2012200260058 U CN2012200260058 U CN 2012200260058U CN 201220026005 U CN201220026005 U CN 201220026005U CN 202403607 U CN202403607 U CN 202403607U
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- tube
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- heat exchange
- exchange tube
- tube head
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Abstract
The utility model discloses a connecting structure between a heat exchange tube head and a tube plate in a waste heat boiler with welding lines which cannot crack, which comprises the heat exchange tube head and the tube plate, a heat exchange tube hole is arranged on the tube plate, the heat exchange tube hole is divided into three sections which are a welding section, a penetration resistant section and a flow expanding section in sequence, the penetration resistant section is in a cylindrical shape, the flow expanding section is in a funnel shape, one end of the flow expanding section with the small aperture is connected with the penetration resistant section, and the heat exchange tube head penetrates through the flow expanding section and the penetration resistant section to be welded to a position of the tube plate located on the welding portion. The connecting structure between the heat exchange tube head and the tube plate in the waste heat boiler has the advantage that after the heat exchange tube hole is divided into three section, gap length between the tube plate and the heat exchange tube head is reduced, and gap cracking caused by blow hot and cold of the heat exchange tube head is avoided.
Description
Technical field
The utility model relates to the syndeton between the heat exchanger tube tube head and tube sheet in a kind of waste heat boiler.
Background technology
Waste heat boiler is widely used in industries such as chemical industry, building materials, metallurgy, coking as a kind of device that reclaims the high-temperature gas heat.Be to utilize high-temp waste gas that water is heated, play and reclaim the heat effect, reach the purpose that cuts down the consumption of energy.Wherein the syndeton between heat exchanger tube tube head and the tube sheet comprises heat exchanger tube tube head and tube sheet, offers the heat exchange pore on the tube sheet, and the cylindrical shape of heat exchange pore for easy for installation, all is the diameter of the aperture of heat exchange pore greater than the heat exchanger tube tube head usually.The heat exchanger tube tube head passes its end and tube sheet welding behind the heat exchange pore, will form a ring gap (place that is not welded to) like this between tube sheet and the heat exchanger tube tube head.Because this gap is longer, when reality was used, the cooling water that is positioned at this gap can't form good convection current with the cooling water outside the gap, is specially: the cooling water in the gap with heat exchanger tube in the high-temperature water heat exchange after understand and evaporate and flow away.Because the gap is long, the space is little, in case vacuum of formation that will be of short duration behind the cooling water evaporation in the gap.The heat exchanger tube tube head tube wall temperature that is positioned at tube sheet is very high; After forming vacuum in the gap; Cooling water outside the gap will get in the gap, can reduce the temperature of the heat exchanger tube tube head tube wall that is positioned at tube sheet behind the cooling water entering gap a little, this part cooling water heat exchange thereupon, evaporation again then.Will exchange heat pipe tube head tube wall like this and form a cyclic process that heats up and lower the temperature, when heat exchanger tube tube head tube wall heated up, the weld seam of heat exchanger tube tube head expanded by heating exchange heat pipe tube head and tube sheet produced compression; Otherwise when heat exchanger tube tube head tube wall temperature reduced, the weld seam that the heat exchanger tube tube head is met cold contraction exchange heat pipe tube head and tube sheet produced tension.Cause weld seam also alternately bearing compression and tension, thereby cause fatigue phenomenon, and then cause the appearance of bead crack, cause cooling water to leak at last, influence the operate as normal of heat exchanger.
The utility model content
The utility model technical problem to be solved is: the syndeton between the heat exchanger tube tube head and tube sheet in the not crackable waste heat boiler of a kind of weld seam is provided.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: the syndeton in a kind of waste heat boiler between heat exchanger tube tube head and the tube sheet; Comprise heat exchanger tube tube head and tube sheet, offer the heat exchange pore on the tube sheet, said heat exchange pore is divided into three sections; Be followed successively by welding section, the anti-section of wearing and flow-expanding section; The wherein anti-section of wearing is cylindrical, and flow-expanding section is bell mouth shape and the little end of bore links to each other with the anti-section of wearing, and the heat exchanger tube tube head passes flow-expanding section and prevents wearing the position welding that the Duan Houyu tube sheet is positioned at welding section.
The beneficial effect of the utility model is: after the heat exchange pore is divided into three sections, reduced the gap length between tube sheet and the heat exchanger tube tube head, the situation of having avoided causing the crack to be split because of the heat exchanger tube tube head is sometimes hot and sometimes cold takes place.
Description of drawings
Fig. 1 is the structure chart of the syndeton between heat exchanger tube tube head and the tube sheet in the utility model waste heat boiler;
Fig. 2 is the structure chart of tube sheet in the utility model.
Among the figure: 1, heat exchanger tube tube head, 2, tube sheet, 3, the heat exchange pore, 4, welding section, 5, the anti-section of wearing, 6, flow-expanding section.
The specific embodiment
Below in conjunction with accompanying drawing, describe the specific embodiments of the utility model in detail.
Like Fig. 1, shown in Figure 2; Syndeton in the waste heat boiler between heat exchanger tube tube head and the tube sheet comprises heat exchanger tube tube head 1 and tube sheet 2, offers heat exchange pore 3 on the tube sheet 2; Said heat exchange pore 3 is divided into three sections; Be followed successively by welding section 4, the anti-section of wearing 5 and flow-expanding section 6, wherein the shape of welding section 4 is set according to welding process requirement, and the anti-section of wearing 5 is cylindrical; Flow-expanding section 6 is bell mouth shape and the little end of bore links to each other with the anti-section of wearing 5, and heat exchanger tube tube head 1 passes flow-expanding section 6 and welds with the position that tube sheet 2 is positioned at welding section 4 with the anti-section of wearing 5 backs.After heat exchange pore 3 is divided into three sections, make the length in the gap (the anti-section of wearing 5) between tube sheet 2 and the heat exchanger tube tube head 1 reduce greatly.Because this gap length is little; Make in the gap with the gap outside flow of cooling water property good; The cooling water gap in so can not take place be evaporated afterwards and take place not as good as the situation of replenishing cooling water, avoid heat exchanger tube tube head 1 to cause bond open between heat exchanger tube tube head 1 and the tube sheet 2 because of sometimes hot and sometimes cold, well guaranteed the fastness and the sealing of welding between heat exchanger tube tube head 1 and the tube sheet 2; Guarantee the operate as normal of heat exchanger, improved production efficiency.
Claims (1)
1. the syndeton between heat exchanger tube tube head and the tube sheet in the waste heat boiler; Comprise heat exchanger tube tube head and tube sheet, offer the heat exchange pore on the tube sheet, it is characterized in that: said heat exchange pore is divided into three sections; Be followed successively by welding section, the anti-section of wearing and flow-expanding section; The wherein anti-section of wearing is cylindrical, and flow-expanding section is bell mouth shape and the little end of bore links to each other with the anti-section of wearing, and the heat exchanger tube tube head passes flow-expanding section and prevents wearing the position welding that the Duan Houyu tube sheet is positioned at welding section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200260058U CN202403607U (en) | 2012-01-19 | 2012-01-19 | Connecting structure between heat exchange tube head and tube plate in waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200260058U CN202403607U (en) | 2012-01-19 | 2012-01-19 | Connecting structure between heat exchange tube head and tube plate in waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202403607U true CN202403607U (en) | 2012-08-29 |
Family
ID=46701249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200260058U Withdrawn - After Issue CN202403607U (en) | 2012-01-19 | 2012-01-19 | Connecting structure between heat exchange tube head and tube plate in waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202403607U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706206A (en) * | 2012-01-19 | 2012-10-03 | 江苏普格机械有限公司 | Connecting structure between heat exchange tube head and tube sheet in waste heat boiler |
| CN102818469A (en) * | 2012-09-18 | 2012-12-12 | 无锡鼎邦换热设备有限公司 | Tube bundle of heat exchanger of slurry oil vapor generator and production method of tube bundle |
| CN104729083A (en) * | 2013-12-23 | 2015-06-24 | 博世热力技术（上海）有限公司 | Heat-pump water heater and production method thereof |
-
2012
- 2012-01-19 CN CN2012200260058U patent/CN202403607U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706206A (en) * | 2012-01-19 | 2012-10-03 | 江苏普格机械有限公司 | Connecting structure between heat exchange tube head and tube sheet in waste heat boiler |
| CN102706206B (en) * | 2012-01-19 | 2013-10-30 | 江苏普格机械有限公司 | Connecting structure between heat exchange tube head and tube sheet in waste heat boiler |
| CN102818469A (en) * | 2012-09-18 | 2012-12-12 | 无锡鼎邦换热设备有限公司 | Tube bundle of heat exchanger of slurry oil vapor generator and production method of tube bundle |
| CN102818469B (en) * | 2012-09-18 | 2013-12-18 | 无锡鼎邦换热设备有限公司 | Tube bundle of heat exchanger of slurry oil vapor generator and production method of tube bundle |
| CN104729083A (en) * | 2013-12-23 | 2015-06-24 | 博世热力技术（上海）有限公司 | Heat-pump water heater and production method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120829 Effective date of abandoning: 20131030 |
|
| RGAV | Abandon patent right to avoid regrant |