CN103438749B - U-shaped tube type multi-strand flow heat exchanger tube box structure - Google Patents
U-shaped tube type multi-strand flow heat exchanger tube box structure Download PDFInfo
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- CN103438749B CN103438749B CN201310361668.4A CN201310361668A CN103438749B CN 103438749 B CN103438749 B CN 103438749B CN 201310361668 A CN201310361668 A CN 201310361668A CN 103438749 B CN103438749 B CN 103438749B
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Abstract
The invention provides a U-shaped tube type multi-strand flow heat exchanger tube box structure which comprises a guiding cylinder, a tube box end cover and pass partition boards. The U-shaped tube type multi-strand flow heat exchanger tube box structure is characterized in that the pass partition boards are arranged at the junction of an inlet and an outlet of the tube box guiding cylinder and the upper side and the lower side of the tube box guiding cylinder, therefore, a small part of fluid with lower temperature differences between the inlet and the outlet flows into one row or multiple rows of heat exchange pipes arranged above or below the junction of the inlet and outlet of the heat exchanger, the temperature difference of the junction of the inlet and the outlet of a tube sheet is lowered, thermal stress caused by the temperature difference between the liquid inlet and the liquid outlet is lowered, the thermal stress distribution of the tube sheet and thermal stress distribution of positions near the tube sheet is improved, and the risks during the operation of the heat exchanger is reduced.
Description
Technical field
The present invention relates to a kind of U-shaped tube type multi-strand flow heat exchanger tube box structure, this structure effectively can improve tube sheet and neighbouring thermal stress distribution thereof.
Background technology
In natural gas liquefaction process, often U-shaped pipe heat exchanger is used for multiple flow heat exchange, because natural gas import and export Temperature Difference Ratio is larger, cause the localized heat stress of tube sheet import and export intersection larger, run to heat exchanger and bring great risk, the import and export temperature difference of another fluid streams is then relative to much smaller natural gas.
Summary of the invention
The technical problem to be solved in the present invention reduces U-shaped pipe Heat Exchangers tube sheet to import and export the localized heat stress near having a common boundary.
For solving the problems of the technologies described above, the invention provides a kind of U-shaped tube type multi-strand flow heat exchanger tube box structure, comprise bobbin carriage end cap, adapter, guide shell, flange, tube sheet and pass partition, the fluid of this channel structure energy heat exchanger tube side is shunted, the heat exchanger inlet and outlet of walking making a part import and export the less fluid of the temperature difference has a common boundary upper and lower row or a few row's heat exchanger tube, thus reduce the temperature difference that intersection imported and exported by tube sheet, reach the object reducing tube sheet localized heat stress.
Wherein, described guide shell is positioned at heat exchanger inlet and outlet end.
Wherein, pass partition is provided with in described guide shell, pass partition lays respectively at guide shell and imports and exports intersection and upper and lower both sides thereof, and all pass partitions all extend to tube sheet from bobbin carriage end cap, and all pass partitions and bobbin carriage end cap, tube sheet and stream guiding barrel weld together.
Wherein, described guide shell is together with heat exchanger tube sheet flange welding.
Wherein, described bobbin carriage end cap is positioned at the other end of bobbin carriage guide shell and tube sheet flange welding end.
Wherein, described tube case end is covered with multiple import and export adapter.
Wherein, described bobbin carriage end cap and guide shell weld together.
The invention has the advantages that:
The fluid making a part import and export the temperature difference less by channel structure walks heat exchanger inlet and outlet both sides, reduce the temperature difference near heat exchanger tube sheet import and export, improve the localized heat stress distribution near heat exchanger tube sheet import and export, reduce the operating risk of heat exchanger.
Accompanying drawing explanation
Utilize accompanying drawing to be further described invention, but the embodiment in accompanying drawing does not form any limitation of the invention.
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the multiple flow U-tube formula heat exchanger fluid arrangement schematic diagram that six general imports six export.
Fig. 3 is the fluid driving schematic diagram of the embodiment of the present invention.
In figure: 1. bobbin carriage end cap; 2. entrance sleeve; 3. propylene entrance sleeve; 4. propylene discharge connection; 5. discharge connection; 6. pass partition; 7. tube sheet; 8. flange; 9. guide shell; 10. natural gas passage; 11. propylene passages.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
Embodiment one
As shown in figure, a kind of U-shaped tube type multi-strand flow heat exchanger tube box structure, comprise bobbin carriage end cap 1, entrance sleeve 2, discharge connection 5, guide shell 9, flange 8, tube sheet 7 and pass partition 6, described guide shell 9 is positioned at heat exchanger inlet and outlet end, described guide shell 9 right-hand member and flange 8 weld together, left end welds mutually with bobbin carriage end cap 1, pass partition 6 is provided with in described guide shell 9, pass partition 6 lays respectively at guide shell 9 and imports and exports intersection and upper and lower both sides thereof, all pass partitions 6 all extend to tube sheet 7 from bobbin carriage end cap 1, all pass partitions 6 and bobbin carriage end cap 1, tube sheet 7 and guide shell 9 weld together, described bobbin carriage end cap 1 is arranged and is respectively arranged with the propylene entrance sleeve 3 and propylene discharge connection 4 that the cavity between pass partition 6 is connected.
Described bobbin carriage end cap 1 is provided with entrance sleeve 2 and the discharge connection 5 of more than 2.
As shown in Figure 1, tube side has two fluids, one is natural gas, one is propylene, wherein the import and export Temperature Difference Ratio natural gas of propylene is imported and exported and is had a narrow range of temperature a lot, allows a part of propylene enter from propylene entrance sleeve 3, due to the existence of pass partition 6 in guide shell 9, this fluid streams from importing and exporting arranging or a few row's U-shaped pipe flows through above of having a common boundary, then from propylene discharge connection 4 out.Natural gas and remaining propylene then pass into from entrance sleeve 2, from discharge connection 5 out.
As shown in Figure 2, this is the multiple flow U-tube formula heat exchanger fluid arrangement schematic diagram that general six imports six export, and the first half is import, the latter half is outlet, circulation natural gas in natural gas path 10, and inlet temperature is 200K, outlet temperature is 100K, then importing and exporting the temperature difference is 100K; Circulation propylene in propylene passage 11, inlet temperature is 180K, and outlet temperature is 130K, then inlet temperature is 50K.The import and export of the import and export Temperature Difference Ratio natural gas of propylene have a narrow range of temperature a lot, because thermal stress is directly proportional with the temperature difference, the larger then thermal stress of the temperature difference is larger, it is 100K that natural gas imports and exports the temperature difference, the temperature difference is larger, cause natural gas to import and export the localized heat stress of intersection comparatively greatly, the localized heat stress near propylene import and export is then relatively little.
As shown in Figure 3, this is the fluid driving schematic diagram of the embodiment of the present invention, is exported become seven import seven outlets by six imports six, the first half is import, the latter half is outlet, circulation natural gas in natural gas path 10, and inlet temperature is 200K, circulation propylene in propylene passage 11, inlet temperature is 180K, because be the arrangement mode of alter, total heat transfer thermal efficiency of heat exchanger is constant, therefore the outlet temperature of natural gas is 100K, the outlet temperature of propylene is 130K.In this fluid driving, what heat exchanger inlet and outlet intersection passed into up and down is propylene, and the import and export temperature difference of propylene is smaller, thus reduces the localized heat stress of heat exchanger inlet and outlet intersection.
The above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (2)
1. a U-shaped tube type multi-strand flow heat exchanger tube box structure, comprise bobbin carriage end cap (1), entrance sleeve (2), discharge connection (5), guide shell (9), flange (8), tube sheet (7) and pass partition (6), described guide shell (9) is positioned at heat exchanger inlet and outlet end, described guide shell (9) right-hand member and flange (8) weld together, left end welds mutually with bobbin carriage end cap (1), it is characterized in that: in described guide shell (9), be provided with pass partition (6), pass partition (6) lays respectively at guide shell (9) and imports and exports intersection and upper and lower both sides thereof, all pass partitions (6) all extend to tube sheet (7) from bobbin carriage end cap (1), all pass partitions (6) and bobbin carriage end cap (1), tube sheet (7) and guide shell (9) weld together, the upper setting of described bobbin carriage end cap (1) is respectively arranged with propylene entrance sleeve (3) the propylene discharge connection (4) that the cavity between pass partition (6) is connected.
2. U-shaped tube type multi-strand flow heat exchanger tube box structure according to claim 1, described tube case end is covered with entrance sleeve (2) and the discharge connection (5) of more than 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310361668.4A CN103438749B (en) | 2013-08-20 | 2013-08-20 | U-shaped tube type multi-strand flow heat exchanger tube box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310361668.4A CN103438749B (en) | 2013-08-20 | 2013-08-20 | U-shaped tube type multi-strand flow heat exchanger tube box structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103438749A CN103438749A (en) | 2013-12-11 |
| CN103438749B true CN103438749B (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310361668.4A Expired - Fee Related CN103438749B (en) | 2013-08-20 | 2013-08-20 | U-shaped tube type multi-strand flow heat exchanger tube box structure |
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| CN (1) | CN103438749B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10690233B2 (en) | 2016-07-27 | 2020-06-23 | Ford Global Technologies, Llc | Bypass control for U-flow transmission oil coolers |
| CN109190141B (en) * | 2018-07-11 | 2023-04-07 | 杭州电子科技大学 | Heat exchange efficiency calculation method of multi-strand heat exchanger |
| CN112033187B (en) * | 2020-08-21 | 2022-02-11 | 上海一冷特艺压力容器有限公司 | High-efficiency heat exchanger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200993548Y (en) * | 2006-12-20 | 2007-12-19 | 沈志康 | U-shape tubular heat exchanger |
| CN201803619U (en) * | 2010-09-15 | 2011-04-20 | 张建东 | U-tube heat exchanger |
| CN201811504U (en) * | 2010-09-29 | 2011-04-27 | 中原工学院 | Multiple shell-side shell-and-tube condenser with heat recoverer |
| CN203518774U (en) * | 2013-08-20 | 2014-04-02 | 华南理工大学 | Tube box structure of U-shaped tube type multi-flow heat exchanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3479733B2 (en) * | 1995-05-15 | 2003-12-15 | 日本パイプシステム株式会社 | Multi-tube heat exchanger |
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2013
- 2013-08-20 CN CN201310361668.4A patent/CN103438749B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200993548Y (en) * | 2006-12-20 | 2007-12-19 | 沈志康 | U-shape tubular heat exchanger |
| CN201803619U (en) * | 2010-09-15 | 2011-04-20 | 张建东 | U-tube heat exchanger |
| CN201811504U (en) * | 2010-09-29 | 2011-04-27 | 中原工学院 | Multiple shell-side shell-and-tube condenser with heat recoverer |
| CN203518774U (en) * | 2013-08-20 | 2014-04-02 | 华南理工大学 | Tube box structure of U-shaped tube type multi-flow heat exchanger |
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| Publication number | Publication date |
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| CN103438749A (en) | 2013-12-11 |
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Granted publication date: 20150603 Termination date: 20210820 |