CN104236331A - Shell and tube type jet fin air heat exchanger - Google Patents
Shell and tube type jet fin air heat exchanger Download PDFInfo
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- CN104236331A CN104236331A CN201310226055.XA CN201310226055A CN104236331A CN 104236331 A CN104236331 A CN 104236331A CN 201310226055 A CN201310226055 A CN 201310226055A CN 104236331 A CN104236331 A CN 104236331A
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Abstract
The invention discloses a shell and tube type jet fin air heat exchanger. The shell and tube type jet fin air heat exchanger comprises an upper air collecting box and a lower air collecting box, wherein a plurality of jet pipes are arranged between the upper air collecting box and the lower air collecting box for communicating the upper air collecting box with the lower air collecting box; the upper air collecting box comprises a first air collecting chamber and a second air collecting chamber separated from each other; an air inlet is formed in the first air collecting chamber; and an air outlet is formed in the second air collecting chamber. The air heat exchanger adopts the jet pipes with fins; the jet pipes with different specifications and numbers are arranged in smoke inlet and outlet, so that the distribution of thermal load is more uniform; and the jet pipes adopt multiple sets of jet holes with various calibers and various numbers, so that the influence of upstream transverse washing airflow to downstream spraying airflow in a jet pipe cooling chamber is solved, and the wall temperature of the jet pipes is uniform.
Description
Technical field
The present invention relates to technical field of heat exchange, refer more particularly to a kind of heat exchange uniform shell and tube jet flow fin air heat exchanger.
Background technology
Jet heat exchanger is widely used in chemical industry, metallurgy; The UTILIZATION OF VESIDUAL HEAT IN of the industrial furnace equipment such as energy source and power, building materials and Preheating Engineering, it fully can reclaim waste gas residual heat, save mass energy, to energy-saving and emission-reduction realize significant.
Efflux heat-exchanger common at present, its injection heat transfer pipe is made up of inside and outside coaxial sleeve and is distributed in heat exchanger, the interior pipe spurt hole quantity of jet pipe is basically identical and aperture is identical, the flue-gas temperature produced due to industrial furnace is higher, reach as high as 800 ~ 900 DEG C, the material of heat exchanger requires very high, and the amount of radiation that the smoke inlet place of heat exchanger is subject to is maximum, and other the local amount of radiation in heat exchanger may be different, cause the heat exchange degree in heat exchanger seriously uneven, bring heat load distribution uneven thus, affect exchange efficiency and the service life of heat exchanger and heat exchanger tube, the cost of manufacture of heat exchanger is higher.
Summary of the invention
The present invention mainly overcomes the deficiencies in the prior art; Provide the shell and tube jet flow fin air heat exchanger that a kind of thermic load is even, material requirement is lower.
In order to solve the technical problem of above-mentioned existence, the present invention mainly adopts following technical proposals:
Shell and tube jet flow fin air heat exchanger of the present invention, comprise plenum chamber and lower plenum chamber, some jet pipes are provided with between upper plenum chamber and lower plenum chamber, upper plenum chamber is communicated with lower plenum chamber by described jet pipe, upper plenum chamber comprises the first separate collection chamber and the second collection chamber, described first collection chamber is provided with air intake, described second collection chamber is provided with air outlet slit, jet pipe comprises the first jet pipe and the second jet pipe, the entrance of described first jet pipe communicates with the first collection chamber, the outlet of the first jet pipe communicates with lower plenum chamber, and the entrance of the second jet pipe communicates with lower plenum chamber, the outlet of the second jet pipe communicates with the second collection chamber, flue gas flows into from the first jet pipe and flows out from the second jet pipe, many shell and tube jet pipes form jumbo smoke heat replacing device, various heat exchange region can adopt the jet pipe of different size and quantity as required, make the thermic load of heat exchanger evenly, each jet pipe has identical or approximate wall temperature, the jet pipe being unlikely gas approach place easily burns out because of localized hyperthermia, also selecting of jet pipe material is facilitated, reduce the use of jet pipe exotic material, reduce material cost, improve the integral device life-span of heat exchanger.
As preferably, described second jet pipe quantity is greater than the first jet pipe quantity, and first flue gas flows through the first jet pipe, and therefore the radiant heat that is subject to of the first jet pipe is the strongest, in first spray heat pipe, the jet-stream wind of larger flow velocity fully can cool the outer tube wall of leaf jet pipe, ensures that thermic load is even
As preferably, deflector is provided with in described lower plenum chamber, lower plenum chamber inner chamber is divided into two regions by described deflector, corresponding first jet pipe and the second jet pipe respectively, the diversed plate of lower plenum chamber is divided into two parts, can, by air uniform divided flows to the second jet pipe from the first jet pipe discharge, prevent air from affecting the heat transfer effect of the second jet pipe at lower plenum chamber internal short-circuit.
As preferably, described jet pipe comprises interior pipe, be sheathed on the outer tube that interior pipe is outer and coaxial with interior pipe, described interior pipe top is concordant with described outer tube top or higher than outer tube top, anchor ring between outer tube top and interior pipe top is closed, the bottom end closure of interior pipe, the interior pipe top mouth of pipe is jet pipe entrance, outer tube bottom is jet pipe outlet, the circumferential wall of interior pipe is provided with along gas flow direction and organizes spurt hole more, cavity between outer tube wall and outer wall of inner tube forms cold air chamber, air is walked in jet pipe, flue gas is walked outside jet pipe, air flows into from the interior pipe top mouth of pipe, spurt hole on inner tubal wall face flow to cold air chamber, and flow out from outer tube bottom, the Gas Jet of the fair speed sprayed from spurt hole is injected into outer tube wall and forces cooling to tube wall, greatly improve the coefficient of heat transfer of outer tube wall, thermic load uniformity is good, meet if the waste gas such as flue gas are to the heat radiation of outer tube wall higher temperature, reduce the use of the exotic material of jet pipe, cooling medium can be air, but be not limited to air, and can be flue gas by recuperated gas, also flue gas is not limited to, this technical scheme can be applied to heat exchange or the cooling of other gas by those of ordinary skill.
As preferably, the layout density of described many group spurt holes is lax gradually along gas flow direction, due to jet pipe upstream spurt hole to the Gas Jet of tube wall along cold air chamber's flow further downstream, very strong transversal flow effect can be produced, the Gas Jet of interference downstream spurt hole, and then affect the heat transfer of outer tube downstream tube wall, downstream spurt hole distribution density reduces, then can reduce the impact of the mutual transversal flow between adjacent spurt hole, also reduce the flow resistance of gas.
As preferably, the aperture of described many group spurt holes becomes large gradually along described direction, the larger aperture spurt hole in jet pipe downstream eject more air, the heat transfer effect of outer tube wall can be improved, jet pipe local can not be caused to burn out and affect the life-span of whole jet pipe.
As preferably, described spurt hole of often organizing, in arranging annular distribution, often arranges spurt hole uniform along described interior pipe circumference ring-type more, many row's jet pipes arrange make thermic load evenly, cooling of tube wall is rapider.
As preferably, described spurt hole of often organizing, in fork row or in-line arrangement annular distribution, can try to achieve balance according to flow of flue gas feature between gas pressure drop and heat transfer coefficient.
As preferably, spurt hole quantity on described first jet pipe is greater than the spurt hole quantity on the second jet pipe, because the first jet pipe is just to the entrance of flue gas, the radiant heat of flue gas is maximum, therefore jet pipe adopts more spurt hole that more gas can be had to cool to tube wall, promotes high-temperature resistance and the exchange capability of heat of jet pipe.
As preferably, the outer surface of described jet pipe is provided with fin, and fin can improve the heat transfer coefficient of jet pipe tube wall, and make the air heat exchange better in the radiant heat of flue gas and jet pipe, the heat exchange efficiency of air heat exchanger is higher.
The invention has the beneficial effects as follows: air heat exchanger tubulation adopts finned jet pipe, the jet pipe of different size and quantity is configured at gas approach place and smoke outlet, Load Distribution is obtained evenly, and jet pipe adopts many group calibre-changeables and the design of parameter amount spurt hole, the cross machine direction upstream solved in jet pipe cooling chamber washes away the impact of air-flow on downstream injection air-flow, whole jet pipe wall temperature is even, reduces the use of the exotic material of jet pipe.
Accompanying drawing explanation
Fig. 1 is a kind of heat exchanger structure schematic diagram of the present invention.
Fig. 2 is the schematic top plan view of Fig. 1 structure.
Fig. 3 is the jet pipe structural representation in Fig. 1.
Plenum chamber on 1. in figure, 11. first collection chambers, 12. second collection chambers, 13. air intakes, 14. air outlet slits, 2. play plenum chamber, 21. deflectors, 3. jet pipe, 31. first jet pipes, 32. second jet pipes, pipe in 33., 34. outer tubes, 35. spurt holes, 36. cold air chamber, 37. supports.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: the shell and tube jet flow fin air heat exchanger of the present embodiment, as depicted in figs. 1 and 2, comprise plenum chamber 1 and lower plenum chamber 2, between upper plenum chamber and lower plenum chamber, some jet pipes 3 are installed, upper plenum chamber is communicated with lower plenum chamber by jet pipe, upper plenum chamber comprises the first separate collection chamber 11 and the second collection chamber 12, first collection chamber is designed with air intake 13, second collection chamber is designed with air outlet slit 14, jet pipe comprises the first jet pipe 31 and the second jet pipe 32, the entrance of the first jet pipe communicates with the first collection chamber, the outlet of the first jet pipe communicates with lower plenum chamber, and the entrance of the second jet pipe communicates with lower plenum chamber, the outlet of the second jet pipe communicates with the second collection chamber, the setting direction of the second jet pipe and the direction of the first jet pipe are in oppositely arranging, cooling-air enters the first collection chamber by air intake, and by entering in next part gas tank after the first jet pipe and flue gas first time heat exchange, and by the second jet pipe again with flue gas heat exchange, the quantity of the second jet pipe is greater than the first jet pipe quantity, simultaneously, in lower plenum chamber, also deflector is installed, lower plenum chamber inner chamber is divided into two regions by deflector, corresponding first jet pipe and the second jet pipe respectively, enter in the second jet pipe after the air diversed plate resistance gear diffusion that first jet pipe is discharged, prevent the short circuit of air in lower plenum chamber from causing heat exchange degree uneven, jet pipe comprises interior pipe 33, be set in the outer tube 34 that interior pipe is outer and coaxial with interior pipe, interior pipe top is concordant with outer tube top, anchor ring between outer tube top and interior pipe top is closed, the bottom end closure of interior pipe, the interior pipe top mouth of pipe is as the air intake of jet pipe, the outer tube bottom mouth of pipe is as the air outlet slit of jet pipe, the circumferential wall of interior pipe is provided with many group spurt holes 35 in gas flow direction, cavity between outer tube wall and outer wall of inner tube forms cold air chamber 36, the position that interior pipe accurately located by some supports 37 is also designed with between outer tube wall and outer wall of inner tube, along gas flow direction, the layout density of many groups spurt hole arranges that density reduces gradually, the aperture of many group spurt holes also becomes large gradually along airflow direction simultaneously, every spurt hole is in many row's fork rows distribution, often arrange spurt hole uniform along interior pipe circumference ring-type.
During use, cold air enters the first jet pipe and flue gas first time heat exchange from the air intake of upper plenum chamber, the spurt hole of air on inner tubal wall face is injected on outer tube wall, and flow out from outer tube bottom after confluxing in cold air chamber, the Gas Jet of the fair speed sprayed from spurt hole is injected into outer tube wall and forces cooling to tube wall, greatly improve the coefficient of heat transfer of outer tube wall, just the spurt hole that ranked first jet pipe before flue gas is arranged that density can be comparatively large and aperture is thicker, high-temperature resistance and the heat-exchange capacity of jet pipe can be strengthened, the air of discharging in the first jet pipe enters in lower plenum chamber, diversed plate guides and shunts and spread, again heat exchange is carried out with flue gas in even inflow second jet pipe, now, second jet pipe of a greater number can make up the deficiency of the heat exchanger effectiveness decline that air themperature higher band is come, each jet pipe has identical or approximate wall temperature, the thermic load uniformity of whole heat exchanger is good, meet if the high-temp waste gas such as flue gas are to the strong heat radiation of outer tube wall, reduce the use of the exotic material of jet pipe, improve the integral device life-span of heat exchanger.
In describing the invention; technical term " top ", " bottom ", " transverse direction ", " interior ", " outward " etc. represent that direction or position relationship are based on direction shown in the drawings or position relationship; be only for convenience of description with understanding technical scheme of the present invention; not restriction is done to the present invention; the present invention is also not limited only to the citing of above-mentioned explanation; the change that those skilled in the art make in essential scope of the present invention, retrofit, increase or replace, all should be considered as protection scope of the present invention.
Claims (10)
1. a shell and tube jet flow fin air heat exchanger, it is characterized in that: comprise plenum chamber (1) and lower plenum chamber (2), some jet pipes (3) are provided with between upper plenum chamber and lower plenum chamber, upper plenum chamber is communicated with lower plenum chamber by described jet pipe, upper plenum chamber comprises separate the first collection chamber (11) and the second collection chamber (12), described first collection chamber is provided with air intake (13), described second collection chamber is provided with air outlet slit (14), jet pipe comprises the first jet pipe (31) and the second jet pipe (32), the entrance of described first jet pipe communicates with the first collection chamber, the outlet of the first jet pipe communicates with lower plenum chamber, and the entrance of the second jet pipe communicates with lower plenum chamber, the outlet of the second jet pipe communicates with the second collection chamber.
2. shell and tube jet flow fin air heat exchanger according to claim 1, is characterized in that: the quantity of described second jet pipe (32) is greater than the quantity of the first jet pipe (31).
3. shell and tube jet flow fin air heat exchanger according to claim 1 and 2, it is characterized in that: in described lower plenum chamber (2), be provided with deflector (21), lower plenum chamber inner chamber is divided into two regions by described deflector, respectively corresponding first jet pipe (31) and the second jet pipe (32).
4. shell and tube jet flow fin air heat exchanger according to claim 1, it is characterized in that: described jet pipe (3) comprises interior pipe (33), be sheathed on the outer tube (34) that interior pipe is outer and coaxial with interior pipe, described interior pipe top is concordant with described outer tube top or higher than outer tube top, anchor ring between outer tube top and interior pipe top is closed, the bottom end closure of interior pipe, the interior pipe top mouth of pipe is jet pipe entrance, outer tube bottom is jet pipe outlet, the circumferential wall of interior pipe is provided with along gas flow direction and organizes spurt hole (35) more, cavity between outer tube wall and outer wall of inner tube forms cold air chamber (36).
5. shell and tube jet flow fin air heat exchanger according to claim 4, is characterized in that: the described layout density organizing spurt hole (35) reduces along gas flow direction gradually.
6. shell and tube jet flow fin air heat exchanger according to claim 4, is characterized in that: the described aperture organizing spurt hole (35) becomes large along described direction gradually.
7. the shell and tube jet flow fin air heat exchanger according to claim 4 or 5 or 6, is characterized in that: described spurt hole (35) of often organizing, in arranging annular distribution, often arranges spurt hole uniform along the circumferential ring-type of described interior pipe (33) more.
8. shell and tube jet flow fin air heat exchanger according to claim 7, is characterized in that: described spurt hole (35) of often organizing is in fork row or in-line arrangement annular distribution.
9. shell and tube jet flow fin air heat exchanger according to claim 4, is characterized in that: spurt hole (35) quantity on described first jet pipe (31) is greater than the spurt hole quantity on the second jet pipe (32).
10. the shell and tube jet flow fin air heat exchanger according to claim 1 or 4, is characterized in that: the outer surface of described jet pipe (3) is provided with fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310226055.XA CN104236331A (en) | 2013-06-06 | 2013-06-06 | Shell and tube type jet fin air heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310226055.XA CN104236331A (en) | 2013-06-06 | 2013-06-06 | Shell and tube type jet fin air heat exchanger |
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| Publication Number | Publication Date |
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| CN104236331A true CN104236331A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310226055.XA Pending CN104236331A (en) | 2013-06-06 | 2013-06-06 | Shell and tube type jet fin air heat exchanger |
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| CN (1) | CN104236331A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792146A (en) * | 2015-04-07 | 2015-07-22 | 北京京诚之星科技开发有限公司 | Waste heat recovery device used for continuous powder coating production line curing oven |
| CN105423753A (en) * | 2015-11-19 | 2016-03-23 | 广东工业大学 | Continuous high-temperature low-oxygen combustion aluminum melting furnace with porous spraying pipe heat exchanger |
| CN105920993A (en) * | 2016-07-04 | 2016-09-07 | 山东太阳纸业股份有限公司 | White-mud-method smoke desulphurization tower |
| CN106642182A (en) * | 2016-12-15 | 2017-05-10 | 郑州轻工业学院 | Movable type heat exchanger for high-temperature fuel gas residual heat |
| CN107192278A (en) * | 2017-03-27 | 2017-09-22 | 黄云生 | High temperature resistant shoe last tube core heat exchanger |
-
2013
- 2013-06-06 CN CN201310226055.XA patent/CN104236331A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792146A (en) * | 2015-04-07 | 2015-07-22 | 北京京诚之星科技开发有限公司 | Waste heat recovery device used for continuous powder coating production line curing oven |
| CN105423753A (en) * | 2015-11-19 | 2016-03-23 | 广东工业大学 | Continuous high-temperature low-oxygen combustion aluminum melting furnace with porous spraying pipe heat exchanger |
| CN105920993A (en) * | 2016-07-04 | 2016-09-07 | 山东太阳纸业股份有限公司 | White-mud-method smoke desulphurization tower |
| CN105920993B (en) * | 2016-07-04 | 2018-04-06 | 山东太阳纸业股份有限公司 | A kind of white clay method fume desulfurizing tower |
| CN106642182A (en) * | 2016-12-15 | 2017-05-10 | 郑州轻工业学院 | Movable type heat exchanger for high-temperature fuel gas residual heat |
| CN107192278A (en) * | 2017-03-27 | 2017-09-22 | 黄云生 | High temperature resistant shoe last tube core heat exchanger |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |