CN104457393A - Spiral half pipe heat transfer jacket provided with longitudinal vortex generators - Google Patents
Spiral half pipe heat transfer jacket provided with longitudinal vortex generators Download PDFInfo
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- CN104457393A CN104457393A CN201410668349.2A CN201410668349A CN104457393A CN 104457393 A CN104457393 A CN 104457393A CN 201410668349 A CN201410668349 A CN 201410668349A CN 104457393 A CN104457393 A CN 104457393A
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- long direction
- spiral
- eddy generator
- kettle
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Abstract
The invention relates to heat transfer devices for reacting and mixing equipment in the field of pharmacy, fine chemical engineering and the like, in particular to a spiral half pipe heat transfer jacket provided with longitudinal vortex generators. The longitudinal vortex generators (3) which are periodically and spirally arrayed according to a certain rule are welded to the heat exchanging wall surface of the jacket, wherein the heat exchanging wall surface may be a kettle body (1) or may comprise spiral half pipes (2), and then the spiral half pipes (2) are welded to the kettle body (1). When fluid flows through the jacket, secondary flow will be generated due to the spiral effect of a pipeline, and a series of falling vortexes will be generated after the fluid skims the longitudinal vortex generators to form a vortex street, so that the purpose of improving the heat transfer efficiency substantially is achieved under the condition that flowing resistance is increased slightly. The spiral half pipe heat transfer jacket is simple and reasonable in structure, high in heat transfer efficiency and capable of being used and popularized.
Description
Technical field
The present invention relates to a kind of heat-transferring jacket device being applied in the equipment such as reaction, mixing of the Fine Chemicals such as pharmacy, chemical industry, printing and dyeing.Particularly relate to a kind of spiral semicanal heat-transferring jacket installing long direction eddy generator.
Background technology
Reactor is a kind of exemplary apparatus being applied in the industries such as pharmacy, printing and dyeing, chemical industry.Temperature in reactor controls most important to product quality, and particularly for the production of medicine with some special chemical products, therefore inside reactor or outside usually arranges heat-transferring jacket, shifts out or supply response still heat.In current technical background field, spiral half-pipe jacket is widely used.Existing result of study shows, the augmentation of heat transfer of spiral half-pipe jacket mainly relies on the Secondary Flow effect in helical duct, and heat-transfer surface approximate centerline is weak by Effects of Secondary Flow, and particularly under high reynolds number condition, heat transfer effect is the poorest.If certain augmentation of heat transfer mode can be adopted, optimize flow field herein, then can improve the heat transfer efficiency of spiral half-pipe jacket by a relatively large margin.Therefore be necessary to transform existing spiral half-pipe jacket with regard to heat-transfer effect, to improve its heat transfer efficiency, significant to economize energy.
Long direction eddy generator is a kind of effective intensified heat transfer method, to insert tie in pipe different with spiral winding enhanced heat exchange principle, when fluid skims over long direction eddy generator, series can be produced to come off vortex, form vortex street, enhance fluid disturbance, thus skiving or destruction boundary layer, enhanced heat exchange.If periodically install long direction eddy generator on spiral half-pipe jacket heat-transfer surface center line, not only improve the flow field of heat-transfer surface approximate centerline, and under the acting in conjunction of Secondary Flow and vortex street, momentum and the exchange heat of mainstream fluid and heat exchange near wall fluid are enhanced, can effective augmentation of heat transfer.
Summary of the invention
The object of the present invention is to provide a kind of simple Novel spiral half-pipe jacket of structure that can overcome the shortcoming of spiral half-pipe jacket in heat transfer and can retain again its advantage, namely the spiral semicanal heat-transferring jacket of long direction eddy generator is installed.Novel spiral half-pipe jacket can improve heat-transfer surface approximate centerline Flow Field Distribution, increases to cost with less flow resistance, obtains the raising of heat transfer efficiency by a relatively large margin, to guarantee that the optimum temperature in the equipment such as reaction, mixing controls, improves the quality of products.
The object of the invention is to be achieved through the following technical solutions:
Install the spiral semicanal heat-transferring jacket of long direction eddy generator, described chuck comprises kettle, spiral semicanal and long direction eddy generator; Heat transfer enchancement is welded on jacket for heat exchange wall with rule, periodic spin arrangement, becomes with it as a whole; Spiral semicanal is connected by welding manner with kettle; Spiral semicanal is arranged on kettle outer wall side, or is arranged on inner wall of kettle side; When being arranged on outer wall side, kettle is heat exchange wall; When being arranged on inwall side, spiral semicanal is heat exchange wall; The semi-circular cross-section of angle 180o centered by the cross section of spiral semicanal, or be the bow-shaped cross-section of any central angle; The installation of long direction eddy generator, should install along semicanal helix periodic breaks, at least install one along in helix helical pitch.
The spiral semicanal heat-transferring jacket of described installation long direction eddy generator, long direction eddy generator shape is rectangular-wing aerofoil profile, triangle Wing aerofoil, column type, elliptic cylinder, droplet-shaped, cylinder slub type, water droplet slub type.
The spiral semicanal heat-transferring jacket of described installation long direction eddy generator, the shape of long direction eddy generator, number, mounting means are according to the diameter of kettle, augmentation of heat transfer effect and the apolegamy of flow resistance factor.
Advantage of the present invention and effect:
1. the spiral half-pipe jacket heat transfer efficiency of the installation long direction eddy generator of the present invention's proposition is high, long direction eddy generator can make conventional helical half-pipe jacket heat-transfer surface centre produce vortex street, improve local flow field, the Radial Flow of enhance fluid and less turbulence, improve heat-transfer effect greatly;
2. the spiral half-pipe jacket of the installation long direction eddy generator of the present invention's proposition when flow resistance increase is less, can obtain the raising of heat transfer efficiency by a relatively large margin;
3. the spiral half-pipe jacket structure of the installation long direction eddy generator of the present invention's proposition is simple, and each long direction eddy generator all adopts welding manner and jacket for heat exchange wall to form an entirety;
4. the kettle diameter range that the spiral half-pipe jacket of the installation long direction eddy generator of the present invention's proposition is applicable is wide, can be used for pharmacy, field of fine chemical, the reactor equipment that particularly production of medicine and some special chemical products is used;
5. the spiral half-pipe jacket of the installation long direction eddy generator of the present invention's proposition is for different-diameter kettle, can change long direction eddy generator shape, number and arrangement mode, by the optimal design to structure, realize optimum augmentation of heat transfer.
Accompanying drawing explanation
Fig. 1 is the spiral half-pipe jacket schematic diagram installing long direction eddy generator when chuck is arranged on kettle outer wall side in the present invention;
Fig. 2 is the spiral half-pipe jacket schematic diagram installing long direction eddy generator when chuck is arranged on inner wall of kettle side in the present invention;
Fig. 3 is the cross-sectional view installing the spiral half-pipe jacket of long direction eddy generator when chuck is arranged on kettle outer wall side in the present invention;
Fig. 4 is the cross-sectional view installing the spiral half-pipe jacket of long direction eddy generator when chuck is arranged on inner wall of kettle side in the present invention;
Fig. 5 is long direction eddy generator mounting means schematic diagram when chuck is arranged on kettle outer wall side in the present invention;
Fig. 6 is long direction eddy generator mounting means schematic diagram when chuck is arranged on inner wall of kettle side in the present invention;
Fig. 7 is long direction eddy generator structural representation of the present invention.As (a), (b), (c), (d), (e), (f), (g).
Detailed description of the invention
The present invention is described in detail with reference to the accompanying drawings.
As shown in Fig. 1 ~ 7: the spiral half-pipe jacket of installation long direction eddy generator provided by the invention is made up of kettle 1, spiral semicanal 2 and long direction eddy generator 3, and chuck has lower inlet and upper outlet, also can have multiple entrance and exit.
Novel spiral half-pipe jacket can be arranged on kettle outer wall side, as shown in figure Fig. 1, also can be arranged on inner wall of kettle side, as shown in Figure 2.
The cross sectional shape of spiral semicanal 2 can be the semi-circular cross-section that central angle is 180o, also can be the bow-shaped cross-section of any central angle.The connected mode of spiral semicanal and kettle is for welding, and semicanal and half tube pitch should meet weld seam requirement.The welding of spiral semicanal, according to the installation position of long direction eddy generator, can carry out segmentation welding.
Long direction eddy generator 3 adopts welding manner to be fixed on jacket for heat exchange wall.When chuck is arranged in kettle outer wall side, heat-transfer surface is kettle, and long direction eddy generator is welded on kettle, as shown in figure Fig. 3; When chuck is arranged in inner wall of kettle side, heat-transfer surface is spiral semicanal, and long direction eddy generator is welded on spiral semicanal wall, as shown in figure Fig. 4.
When installing long direction eddy generator, should install along the helix periodic breaks of spiral semicanal, between adjacent eddy generator, interval angles is
θ=360o/
n, as shown in Figure 5,6,
n>=1 is the number along the long direction eddy generator installed in helix helical pitch.
Long direction eddy generator can be Wing aerofoil, column type, elliptic cylinder, water droplet column type, cylinder slub type, water droplet slub type etc., as shown in Figure 7.
For column type, elliptic cylinder, water droplet column type and ring column type long direction eddy generator, its length
lcan 0 ~
rbetween optimum option,
rfor semicanal radius; Mean breadth
bshould choose according to semicanal cross-sectional area, to reach optimum heat-transfer effect.
For Wing aerofoil long direction eddy generator, size and the angle of attack of eddy generator can be changed
β; Single eddy generator structure can be adopted also can to adopt eddy generator structure in groups, to reach optimum heat-transfer effect.
Embodiment one
In embodiment one, the spiral half-pipe jacket of the installation long direction eddy generator that the present invention proposes comprises reactor kettle 1, spiral semicanal 2 and long direction eddy generator 3.Kettle diameter specifications is Ф 2800 × 6mm.Cross section is that semicircular spiral half-pipe jacket is arranged in kettle outer wall side, and jacket for heat exchange wall is kettle.Semi-circular tube specification is Ф 100 × 4mm, pitch 140mm.Long direction eddy generator in advance periodic breaks be welded on heat exchange wall center line, along in helix helical pitch install 6 column type long direction eddy generators, i.e. angular intervals
θ=60o, column type long direction eddy generator height is 20mm, and diameter is 20mm.Jacket pipe segmentation is welded on kettle outer wall.During chuck work, under the acting in conjunction of Secondary Flow and longitudinal vortex street, carry out augmentation of heat transfer.
Embodiment two
Embodiment two is substantially identical with embodiment one, and difference is that the spiral half-pipe jacket installing long direction eddy generator is arranged on reactor inner wall of kettle side, and spiral semi-circular tube is heat exchange wall, and column type heat transfer enchancement is arranged on spiral semi-circular tube wall.
Claims (3)
1. install the spiral semicanal heat-transferring jacket of long direction eddy generator, it is characterized in that, described chuck comprises kettle (1), spiral semicanal (2) and long direction eddy generator (3); Heat transfer enchancement (3) is welded on jacket for heat exchange wall with rule, periodic spin arrangement, becomes with it as a whole; Spiral semicanal is connected by welding manner with kettle (1); Spiral semicanal (2) is arranged on kettle outer wall side, or is arranged on inner wall of kettle side; When being arranged on outer wall side, kettle (1) is heat exchange wall; When being arranged on inwall side, spiral semicanal (2) is heat exchange wall; The semi-circular cross-section of angle 180o centered by the cross section of spiral semicanal, or be the bow-shaped cross-section of any central angle; The installation of long direction eddy generator, should install along semicanal helix periodic breaks, at least install one along in helix helical pitch.
2. the spiral semicanal heat-transferring jacket of installation long direction eddy generator according to claim 1, it is characterized in that, long direction eddy generator (3) shape is rectangular-wing aerofoil profile, triangle Wing aerofoil, column type, elliptic cylinder, droplet-shaped, cylinder slub type, water droplet slub type.
3. the spiral semicanal heat-transferring jacket of installation long direction eddy generator according to claim 1, is characterized in that, the shape of long direction eddy generator, number, mounting means are according to the diameter of kettle, augmentation of heat transfer effect and the apolegamy of flow resistance factor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668349.2A CN104457393B (en) | 2014-11-21 | 2014-11-21 | The spiral semicanal heat-transferring jacket of long direction eddy generator is installed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410668349.2A CN104457393B (en) | 2014-11-21 | 2014-11-21 | The spiral semicanal heat-transferring jacket of long direction eddy generator is installed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104457393A true CN104457393A (en) | 2015-03-25 |
| CN104457393B CN104457393B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410668349.2A Expired - Fee Related CN104457393B (en) | 2014-11-21 | 2014-11-21 | The spiral semicanal heat-transferring jacket of long direction eddy generator is installed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766265A (en) * | 2017-03-08 | 2017-05-31 | 华北电力大学（保定） | Unilateral longitudinal Vortex optimizes the tower type solar receiver in flow field |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203170307U (en) * | 2012-12-31 | 2013-09-04 | 新昌德力石化设备有限公司 | Heat exchange equipment for chemical equipment interlayer |
| KR101396905B1 (en) * | 2012-11-16 | 2014-05-20 | 연세대학교 산학협력단 | Shapes of pin structure for enhancing the heat transfer in the pin-fin array |
-
2014
- 2014-11-21 CN CN201410668349.2A patent/CN104457393B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101396905B1 (en) * | 2012-11-16 | 2014-05-20 | 연세대학교 산학협력단 | Shapes of pin structure for enhancing the heat transfer in the pin-fin array |
| CN203170307U (en) * | 2012-12-31 | 2013-09-04 | 新昌德力石化设备有限公司 | Heat exchange equipment for chemical equipment interlayer |
Non-Patent Citations (1)
| Title |
|---|
| 李雅侠等: "螺旋半圆管夹套内充分发展层流流动与换热特性", 《化工学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766265A (en) * | 2017-03-08 | 2017-05-31 | 华北电力大学（保定） | Unilateral longitudinal Vortex optimizes the tower type solar receiver in flow field |
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| Publication number | Publication date |
|---|---|
| CN104457393B (en) | 2016-04-06 |
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Granted publication date: 20160406 Termination date: 20181121 |