CN1400448A - Internal and external double-channel fin tube and heat exchange using said fin tube - Google Patents
Internal and external double-channel fin tube and heat exchange using said fin tube Download PDFInfo
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- CN1400448A CN1400448A CN 01123789 CN01123789A CN1400448A CN 1400448 A CN1400448 A CN 1400448A CN 01123789 CN01123789 CN 01123789 CN 01123789 A CN01123789 A CN 01123789A CN 1400448 A CN1400448 A CN 1400448A
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- finned tube
- pipe
- flow passage
- fin
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Abstract
The present invention discloses a kind of inner and outer double runner fin tube and heat exchanger using said fin tube. Said invented fin tube is formed from at least two kinds of tubes with different diameters which are mutually cover-mounted together, in the annular channel formed from adjacent tubes the high-efficiency compact fins are distributed. Said invention fin tube heat exchange is equipped with several fin tubes with inner and outer double runner, the inner runner and outer runner respectively aodpts parallel-connection, series-connection or parallel-series mixed connection mode, and separated into two or more than two heat-exchanging cavities. Said invented fin tube and its heat exchanger are comdpact in structure and high in heat exchange efficiency, and can be extensively applicable to heat exchange between gas-gas, gas-liquid and liquid-liquid media.
Description
Technical field
The present invention discloses a kind of internal and external double-channel finned tube and uses the heat exchanger of this finned tube, is widely used in the exchange heat of gas-gas, gas-liquid, liquid-liquid medium.
Background technology
For improving the heat transfer coefficient of heat exchanger, increase the area of heat exchanger, improve the usefulness and the compactedness of heat exchanger, increase fin (or claiming fin) on the heat exchanger inner and outer wall of being everlasting.The finned tube that is used for heat exchanger at present can be divided into two classes substantially: a class is an external finned tube, and this class finned tube has pipe with wound fin, and nest plate pipe and integral body are rolled finned tube etc.; Another kind of is internally finned tube, this class finned tube is to increase fin on the heat exchanger tube inwall, as on inner surface of tube wall, drawing out the vertical internal-rib parallel with the heat exchanger tube axis, perhaps in heat exchanger tube, pack into and have the inner core of external fin, in addition, also have a kind of internally finned tube, it is provided with interior pipe in outer tube, between outer tube and the interior pipe fin is arranged, interior effective plug is shut.Above-mentioned finned tube is mainly used in both sides heat exchanging fluid exothermic coefficient and differs in the bigger heat exchanger, as the heat exchange between gas-liquid, is not suitable for the less and/or close occasion of both sides heat exchanging fluid exothermic coefficient, as gas-gas, and the heat exchange between liquid-liquid.A kind of fluid of heat exchanger that adopts above-mentioned finned tube is at tube side, flow in the pipe, one other fluid is at shell side, flow between pipe, for improving the shell side flow velocity and increasing flow process length, the shell side pipe of being everlasting installs transverse baffle and/or longitudinal baffle outward additional, and when installing transverse baffle additional, flow arrangement is cross-flow, when installing longitudinal baffle additional, flow arrangement is a baffling, compares with pure counter-flow arrangement, and the heat transfer mean temperature difference reduces, in having the transverse baffle heat exchanger, between finned tube and the housing, all inevitably there is bypass clearance between deflection plate and housing and the finned tube, causes interior leakage.Leak in having the heat exchanger of longitudinal baffle, also existing, also have heat leak simultaneously, serious heat transfer coefficient and the usefulness that reduces heat exchanger, not only increase the metal consumption of non-heat exchange surface, bring very big trouble also for the heat transfer and the resistance calculating of heat exchanger, still do not have accurate computational methods so far.In addition, when shell side is the HTHP working media, need a very thick shell, whole the non-heat exchange surface metal wastage of heat exchanger increases greatly, causes the significant wastage of material.
The objective of the invention is to overcome existing finned tube and use the deficiency that has finned tube exchanger now, the heat exchanger of a kind of internal and external double-channel finned tube and use internal and external double-channel finned tube is provided.
Summary of the invention
Internal and external double-channel finned tube disclosed by the invention, pipe and fin by different-diameter are formed, it is characterized in that, at least the pipe by 2 kinds of (preferably 2-5 kind) different-diameters sets with each other, form a circle and some circular passages, in the circular passage that two adjacent pipes form fin is arranged, the single folded or overlapping layout in circular passage, some passages are divided into inside and outside two runners, isolate easily for making the fluid in the inside and outside runner, inner flow passage is longer than outer flow passage, grows part and stretches out from the outer flow passage two ends.Overlap a time-out mutually as different-diameter pipe more than 3 kinds or 3 kinds, diameter smallest circle pipe orifice circular channel can be shut, in some circular passages are divided into, and outer two runners, inner flow passage is longer than outer flow passage, grows part and stretches out from the outer flow passage two ends.
The described pipe of finned tube of the present invention, it can be light pipe, also can be to have overall pipe, adopt when the pipe of different-diameter sets with each other more than 3 kinds or 3 kinds that wherein the pipe of diameter minimum can substitute with the rod of pole or the vertical rib of band for vertical internal-rib or external fin.Described fin, it can be the continuous and/or interrupted folded fin of plate system, also can be the internal-rib or the external fin of pipe, the shape of folded fin can be straight shape, straight punching shape, zigzag, corrugated, shutter shape, sheet bar shaped etc., also can be the heating surface of many other shapes of obtaining of its difform combination or conversion.
In addition, the invention also discloses the heat exchanger that is equipped with some internal and external double-channel finned tubes, the some internal and external double-channel finned tubes that constitute by 2 kinds of different-diameter pipes and fin at least are equipped with in the heat exchanger of the present invention, with some finned tubes permutation and combination differently, inside and outside runner can adopt parallel connection respectively, serial or parallel connection adds the form of series connection, the some inside and outside runners of finned tube are separated into heat exchanging chamber more than 2 or 2, the various heat exchange medium enters corresponding chamber and runner, realizes the wall-type heat exchange of two strands or a plurality of fluids.When finned tube of the present invention is in parallel, finned tube can be placed in the shell, inner flow passage is drawn in shell, introduce the shell two end axles to or the tube sheet that radially is provided with, tube sheet is connected with bobbin carriage or end socket, and some inside and outside runners of finned tube are separated into the heat exchanging chamber more than 2 or 2; When finned tube is in parallel, also can be that the parallel connection of the inside and outside runner entrance end difference of finned tube is connected with tube sheet, interior outer flow passage be imported and exported grouping place in the different shells that the inside and outside runner of some finned tubes is separated into the heat exchanging chamber more than 2 or 2; When finned tube is in parallel, can also earlier finned tube outer flow passage two ends be shut with annular slab, in the perforate of outer flow passage both ends and establish adapter, take over and in parallelly is connected with communicating pipe, inner flow passage is in parallel to be connected with another communicating pipe, and inside and outside runner is separated into not connected heat exchanging chamber.During the finned tube series connection, finned tube outer flow passage two ends can be shut with annular slab equally, in the perforate of outer flow passage both ends, with taking over outer flow passage is together in series, inner flow passage is connected in series with U-shaped pipe or bend pipe, and inside and outside runner is separated into not connected heat exchanging chamber.The finned tube parallel connection adds the heat exchanger of series connection, can be with the outer flow passage parallel connection, and the inner flow passage series connection, otherwise, the inner flow passage parallel connection, the outer flow passage series connection forms not connected heat exchanging chamber etc., implements out the internal and external double-channel finned tube exchanger of various ways.The shell-and-tube heat exchanger that adopts finned tube of the present invention to implement out, finned tube and finned tube, between finned tube and the shell during excesssive gap, can it be shut with baffle plate and/or filler, shell-side fluid is all passed through outer flow passage, a gap hour permission fluid passes through between finned tube, makes full use of the external surface area of finned tube.
The heat exchanger of internal and external double-channel finned tube of the present invention and use finned tube, because finned tube has inside and outside two runners, be used for heat exchanger, when the fluid exothermic coefficient differed big, inner flow passage can be a light pipe, is furnished with efficient, compact folding shape fin in the outer flow passage, exothermic coefficient is big, easily the fluid of fouling is walked inner flow passage, and exothermic coefficient is little, and clean fluid is walked outer flow passage.When two heat exchanging fluid exothermic coefficients are less and/or close, all be furnished with the finned tube of fin in adopting in the outer flow passage, heat exchange area per unit volume is big, compact conformation, the heat transfer coefficient height, metal consumption is little.Heat exchanging fluid is along the finned tube axial flow generally in heat exchanger of the present invention, can realize pure counter-flow arrangement easily, heat transfer temperature difference is big, because the finned tube caliber is little, bear high temperature, the required wall thickness of high pressure, finned tube can abut against mutually with finned tube and support, and can not produce vibrations and wearing and tearing.Finned tube and finned tube can be shut with baffle plate and/or filler between finned tube and the housing, can bear higher pressure, have also solved harmful by-pass flow and hot leakage problem, and heat exchanger heat transfer and resistance computational accuracy increase substantially.Finned tube exchanger of the present invention is the plate-fin that continues, another efficient, compact heat exchanger after the lamella heat exchanger, but more be applicable to high temperature, high pressure than plate-fin, lamella heat exchanger, compacter more than lamella heat exchanger structure.Finned tube exchanger of the present invention is easy to manufacture, simple in structure, compact, selection range is wide, and can realize the mutual combination of unlike material, good economy performance not only, adaptability is stronger, with existing traditional shell-and-tube, double pipe heat exchanger is compared, and can significantly reduce heat exchanger volume and weight, be the renewal product of existing multiple pattern heat exchanger, be widely used in the exchange heat of gas-gas, gas-liquid, liquid-liquid medium.
Description of drawings
Fig. 1 is the profile of an embodiment of internal and external double-channel finned tube of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the profile of the another embodiment of finned tube of the present invention.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the main structure chart of a kind of embodiment of finned tube exchanger of the present invention.
Fig. 6 is the vertical view of Fig. 5.
Fig. 7 is the structure chart of another embodiment of finned tube exchanger of the present invention.
Fig. 8 is the A-A profile of Fig. 7.
Fig. 9 illustrates the stereogram of several typical folded fins that use in the finned tube of the present invention.
Further illustrate the heat exchanger of internal and external double-channel finned tube of the present invention and use finned tube with reference to the accompanying drawings, but the present invention is not limited to the following examples.
The specific embodiment
Fig. 1, Fig. 2 illustrates an embodiment of internal and external double-channel finned tube of the present invention, finned tube is set with each other by the pipe of 2 kinds of different-diameters, be furnished with folded fin 5 in the circular passage between two adjacent tubes, 1 pipe 2, managing 1 endoporus circular channel is inner flow passage, and the circular passage between pipe 1, the pipe 2 is an outer flow passage, isolate easily for making inside and outside runner, inner flow passage is longer than outer flow passage, grows part and stretches out from the two ends of outer flow passage, realizes a kind of pattern of internal and external double-channel finned tube of the present invention.
Fig. 3, Fig. 4 shows the another embodiment of internal and external double-channel finned tube of the present invention, finned tube has the pipe of 4 kinds of different-diameters to set with each other, pipe 1 and pipe 2, pipe 2 and pipe 3, be furnished with folded fin 5 in the circular passages that pipe 3 and pipe 4 form, to manage 1 with the pipe 2, circular passage overlapping between pipe 2 and the pipe 3 is arranged, as inner flow passage, pipe 3 is put with the single laying up in circular passage that pipe 4 forms, as outer flow passage, inner flow passage is longer than outer flow passage, grow part and stretch out from the outer flow passage two ends, the pipe 1 endoporus circular channel of diameter minimum is shut with plug 6, constitutes another internal and external double-channel finned tube.
Fig. 5, Fig. 6 illustrates the main structure chart of a kind of embodiment of finned tube exchanger of the present invention, heat exchanger has the some internal and external double-channel finned tubes 7 that are made of the pipe and the fin of 2 kinds of different-diameters, finned tube 7 parallel connections place the housing 8 of heat exchanger, inner flow passage is drawn in shell, a part is in parallel, introduce in the tube sheet 9 at housing 8 two ends, another part parallel connection is introduced tube sheet 11 from the adapter 10 of housing 8 end radial arrangement, tube sheet 9 is connected with housing 8, tube sheet 11 is connected with adapter 10, and the housing two ends also are provided with fluid inlet and outlet and take over 12, for preventing that fluid is from finned tube and finned tube, pass through between finned tube and housing, at finned tube and finned tube, be furnished with baffle plate 13 and filler 14 between finned tube and housing, in the some finned tubes 7, outer flow passage is separated into 3 heat exchanging chambers, constitute the agent structure of finned tube exchanger, during use, on tube sheet, be equipped with end socket or bobbin carriage again, realize the exchange heat of 3 kinds of different mediums.
Fig. 7, Fig. 8 illustrate another embodiment of finned tube exchanger of the present invention, and its profile and traditional double pipe heat exchanger are similar, and just heat exchanger tube is an internal and external double-channel finned tube of the present invention.This heat exchanger has the some internal and external double-channel finned tubes 15 that are made of the pipe and the fin of 3 kinds of different-diameters, finned tube 15 outer flow passages are imported and exported and are shut with annular slab 16, in the end perforate and establish and take over 12, taking over 12 interconnects, outer flow passage is together in series, and inner flow passage connects with U-shaped pipe polyphone, and interior outer flow passage is separated into 2 not connected heat exchanging chambers, two kinds of fluids enter corresponding chamber respectively, realize the exchange heat of 2 kinds of media.
Fig. 9 illustrates the stereogram of several typical folded fins of internal and external double-channel finned tube use of the present invention, it also is the normal fin pattern that adopts in the plate-fin heat exchanger, but all fin patterns of not representing the present invention to use, Fig. 9 (a) is straight shape folded fin, Fig. 9 (b) is straight shape punching folded fin, Fig. 9 (c) is the interrupted folded fin of zigzag, and Fig. 9 (d) is corrugated folded fin.
Claims (9)
1. an internal and external double-channel finned tube is made up of the pipe and the fin of different-diameter, it is characterized in that, have at least the pipe of 2 kinds of different-diameters to set with each other, form a circle and some circular passages, be furnished with fin in the circular passage that two adjacent pipes form, the single folded or overlapping layout in circular passage is divided into inside and outside two runners to some passages, inner flow passage is longer than outer flow passage, grows part and stretches out from the outer flow passage two ends.
2. internal and external double-channel finned tube as claimed in claim 1, it is characterized in that, pipe by different-diameter more than 3 kinds or 3 kinds sets with each other, the pipe endoporus circular channel of diameter minimum can be shut, this moment, the pipe of diameter minimum can substitute with pole or rod with ribbing, some circular passages are divided into inside and outside two runners, and inner flow passage is longer than outer flow passage, grows part and stretches out from the outer flow passage two ends.
3. as claim 1,2 described internal and external double-channel finned tubes, it is characterized in that the pipe of different-diameter can be a light pipe, also can be to have overall pipe for vertical internal-rib or external fin.
4. internal and external double-channel finned tube as claimed in claim 1, it is characterized in that, fin can be the continuous and/or interrupted folded fin of plate system, also can be the internal-rib or the external fin of pipe, the shape of folded fin can be straight shape, straight punching shape, zigzag, corrugated, shutter shape, sheet bar shaped etc., also can be the heating surface of many other shapes of obtaining of its difform combination or conversion..
5. a finned tube exchanger is characterized in that, is equipped with some to have the pipe of 2 kinds of different-diameters and the internal and external double-channel finned tube that fin constitutes at least in the heat exchanger.
6. finned tube exchanger as claimed in claim 5 is characterized in that, the inside and outside runner of some internal and external double-channel finned tubes is in parallel respectively, and serial or parallel connection adds series connection, and the inside and outside runner of some finned tubes is separated into heat exchanging chamber more than 2 or 2.
7. finned tube exchanger as claimed in claim 6 is characterized in that the finned tube parallel connection places in the shell, and inner flow passage is drawn in shell, in parallel is connected with tube sheet, and the inside and outside runner of some finned tubes is divided into heat exchanging chamber more than 2 or 2.
8. finned tube exchanger as claimed in claim 6, it is characterized in that finned tube outer flow passage two ends are shut with annular slab, in finned tube outer flow passage two ends radial aperture and establish adapter, inside and outside runner difference parallel connection or series connection were connected with communicating pipe, formed not connected heat exchanging chamber.
9. finned tube exchanger as claimed in claim 6 is characterized in that, some finned tube exchangers in parallel can be connected, and some series connection finned tube exchangers can be in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011237899A CN1177191C (en) | 2001-08-01 | 2001-08-01 | Internal and external double-channel fin tube and heat exchange using said fin tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011237899A CN1177191C (en) | 2001-08-01 | 2001-08-01 | Internal and external double-channel fin tube and heat exchange using said fin tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1400448A true CN1400448A (en) | 2003-03-05 |
| CN1177191C CN1177191C (en) | 2004-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011237899A Expired - Fee Related CN1177191C (en) | 2001-08-01 | 2001-08-01 | Internal and external double-channel fin tube and heat exchange using said fin tube |
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| Country | Link |
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| CN (1) | CN1177191C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542746A (en) * | 2013-11-04 | 2014-01-29 | 张伟 | Round header shell and tube water storage heater multi-tube heat conducting heat exchanger and manufacturing process thereof |
| CN104633748A (en) * | 2015-01-09 | 2015-05-20 | 上海理工大学 | Double-loop solar heating and heat exchanging combined device |
| CN105180667A (en) * | 2015-09-30 | 2015-12-23 | 上海宝钢节能环保技术有限公司 | Raw coke oven gas sensible heat recycling device with special-shaped water jack |
| CN108387117A (en) * | 2018-03-16 | 2018-08-10 | 华南理工大学 | Double convection current pipe heat exchangers inside and outside one kind |
| CN111981483A (en) * | 2020-08-21 | 2020-11-24 | 陕西茵泰科环境工程有限公司 | Flue gas cools off device rapidly |
-
2001
- 2001-08-01 CN CNB011237899A patent/CN1177191C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542746A (en) * | 2013-11-04 | 2014-01-29 | 张伟 | Round header shell and tube water storage heater multi-tube heat conducting heat exchanger and manufacturing process thereof |
| CN103542746B (en) * | 2013-11-04 | 2015-12-23 | 枣庄利能热水器厂 | Circle header package water storage heating installation multitube heat-conductive heat-exchanger and manufacture craft thereof |
| CN104633748A (en) * | 2015-01-09 | 2015-05-20 | 上海理工大学 | Double-loop solar heating and heat exchanging combined device |
| CN104633748B (en) * | 2015-01-09 | 2017-02-22 | 上海理工大学 | Double-loop solar heating and heat exchanging combined device |
| CN105180667A (en) * | 2015-09-30 | 2015-12-23 | 上海宝钢节能环保技术有限公司 | Raw coke oven gas sensible heat recycling device with special-shaped water jack |
| CN105180667B (en) * | 2015-09-30 | 2017-12-05 | 上海宝钢节能环保技术有限公司 | A kind of special-shaped water leg crude-gas sensible heat retracting device |
| CN108387117A (en) * | 2018-03-16 | 2018-08-10 | 华南理工大学 | Double convection current pipe heat exchangers inside and outside one kind |
| CN111981483A (en) * | 2020-08-21 | 2020-11-24 | 陕西茵泰科环境工程有限公司 | Flue gas cools off device rapidly |
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| Publication number | Publication date |
|---|---|
| CN1177191C (en) | 2004-11-24 |
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