CN204787980U - Heat exchange tube of interpolation interval hurricane band - Google Patents
Heat exchange tube of interpolation interval hurricane band Download PDFInfo
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- CN204787980U CN204787980U CN201520277687.3U CN201520277687U CN204787980U CN 204787980 U CN204787980 U CN 204787980U CN 201520277687 U CN201520277687 U CN 201520277687U CN 204787980 U CN204787980 U CN 204787980U
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- hurricane band
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- exchanger tube
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Abstract
The utility model relates to an indirect heating equipment specifically provides a heat exchange tube of interpolation interval hurricane band. The heat exchange tube mainly comprises body and 2 at least short hurricane bands, keeps suitable axial interval between the adjacent short hurricane band. The utility model provides a heat exchange tube of interpolation interval hurricane band can obtain higher heat transfer efficiency under lower intraductal flow resistance condition, enhanced heat transfer's comprehensive properties is better, and the PEC value is higher promptly.
Description
Technical field
The utility model relates to heat transmission equipment, specifically, relates to a kind of heat exchanger tube of interpolation interval hurricane band.
Background technology
Owing to making, the efficiency of various heat transmission equipment improves, weight and volume reduces, and heat conduction reinforced technology is subject to the attention of scientific and technological circle and industrial quarters always.
Pipe heat exchanger is using pipe as heat transfer element, have that structure is simple, easily manufactured, applicability is strong, security is high, selection range is wide, disposal ability is large, be more suitable for high pressure-temperature under the feature such as power conversion, be a kind of most widely used industrial heat exchange equipment, account for about 70% of whole heat exchanger.
Twisted strip, static mixer, hurricane band, spiral winding, helical spring etc. are inserted in pipe, fluid can be made to rotate in pipe, increase the flow path of fluid, add the disturbance in strong convection body boundary layer, improve the turbulence intensity of near wall region fluid, promote the mixing of boundary layer fluid and main fluid, thus effectively strengthen convection heat transfer' heat-transfer by convection process.
With the foil of one fixed width, make on the spiral fluted mandrel of certain depth and a constant pitch at car in advance and be entwined continuous helical band, or form hurricane band with plastic processing.
The continuous helical band same or slightly shorter with heat exchanger tube length is inserted in heat exchanger tube, near wall region fluid in heat exchanger tube can be made to produce rotate, and make fluid periodically go out object area at spiral prominence to be disturbed, high flow rate and high turbulence intensity is there is near wall region, therefore, it is possible to keep higher heat-transfer intensity, this is a kind of effective ways of strengthening single-phase fluid heat-transfer.Because pipe inside spin band structure is simple, stable performance, is easy to mounting or dismounting and maintenance, does not need to change the advantages such as heat-transfer area shape, being particularly suitable for existing equipment taps the potential and upgrade technologically, and is also applicable to manufacturing and designing of new equipment.
But the shortcoming inserting the intensified heat transfer method of continuous helical band in heat exchanger tube is that fluid conveying power consumption is quite large, and the combination property of augmentation of heat transfer is not good, and namely PEC value is not high.
Utility model content
(1) technical problem that will solve
It is less that the purpose of this utility model is to provide a kind of consumption of materials, higher heat transfer efficiency can be obtained under lower tube fluid resistance condition, complex heat transfer better performances and the higher interpolation interval hurricane band heat exchanger tube of PEC value, the heat exchanger tube fluid conveying power consumption solving interpolation continuous helical band is large, the problem that the combination property of augmentation of heat transfer is not good.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of heat exchanger tube of interpolation interval hurricane band, and described heat exchanger tube is primarily of body and at least 2 short hurricane band compositions, and keep the axial spacing of 0.5-8d between adjacent short hurricane band, d is internal diameter of tube body.
The rotation direction of adjacent two short hurricane bands can be identical, also can be contrary.
As preferably, between adjacent short hurricane band, keep the axial spacing of 2.5d.
Further, the width h of described short hurricane band and the ratio of internal diameter of tube body d are h/d=0.15 ~ 0.45, are preferably 0.3.
Further, the full pitch of the length of described short hurricane band to be 0.5-4H, H be hurricane band.
As preferably, the length of described short hurricane band is H.
Connect with at least one thin bar spot welding between described short hurricane band, or described short hurricane band welds or is bonded on heat exchanger tube inwall.
The material of described thin bar is metal or plastics.
(3) beneficial effect
The heat exchanger tube of the interpolation interval hurricane band that the utility model provides, in pipe, spaced each short hurricane band serves the effect of eddy flow exciter, fluid just forms spiral flow through a short hurricane band in heat exchanger tube, improve effective heat transfer temperature difference and pipe side heat transfer coefficient, afterwards, spiral flow relies on the motional inertia of fluid self to form spin current in the middle of the interval of two short hurricane bands, continues to play to strengthen heat transfer effect.The swirl strength of this spin current is decayed gradually along flow direction, and effective heat transfer temperature difference slowly diminishes, and fluid is forming spiral flow again again through next short hurricane band, and fluid streamwise periodically repeats the process of described spiral flow and spin current.Spin current meeting breakdown speed between short hurricane band and thermal boundary layer, select appropriate short hurricane band spacing to lay interval hurricane band, its augmentation of heat transfer effect can be better than continuous helical band.Because there is one section of blank pipe in each short hurricane band downstream, do not exist because the frictional resistance of fluid scouring hurricane band formation and form drag, thus make fluid resistance than inserting the much smaller of continuous helical band, higher heat transfer efficiency can be obtained under lower tube fluid resistance condition.
The consumption of materials of interval hurricane band is less than continuous helical band, can obtain higher heat transfer efficiency under lower tube fluid resistance condition, and the combination property of augmentation of heat transfer is better, and namely PEC value is higher.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the main apparent direction of interpolation interval hurricane band heat exchanger tube described in the utility model (short hurricane band welds or is bonded on heat exchanger tube inwall);
Fig. 2 is the schematic diagram of the left apparent direction of interpolation interval hurricane band heat exchanger tube described in the utility model.
Fig. 3 is the schematic diagram of the main apparent direction of interpolation interval hurricane band heat exchanger tube described in the utility model (connecting with thin bar spot welding between short hurricane band).
In figure, 1: body; 2: short hurricane band; 3: thin bar.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of the utility model protection.
Embodiment 1
As shown in Figure 3, present embodiments provide a kind of heat exchanger tube of interpolation interval hurricane band, described heat exchanger tube is made up of body 1 and short hurricane band 2, connects between described short hurricane band 2 with thin bar 3 spot welding.
The quantity of described short hurricane band 2 is 3.Described short hurricane band 2 equidistantly being arranged in heat exchanger tube body 1, the internal diameter of spacing to be 2.5d, d be body 1.The rotation direction of adjacent two short hurricane bands 2 is identical.
The width of described short hurricane band 2 is 0.3d.
The full pitch of the length of described short hurricane band 2 to be H, H be hurricane band.
Embodiment 2
The difference of the present embodiment and embodiment 1 is only:
The quantity of described short hurricane band 2 is 2, and the spacing of two short hurricane bands 2 is 8d, and rotation direction is contrary.
The width of described short hurricane band 2 is 0.45d.
The full pitch of the length of described short hurricane band 2 to be 4H, H be hurricane band.
Embodiment 3
As shown in Figure 1, the difference of the present embodiment and embodiment 1 is only:
Do not connect by thin bar between adjacent short hurricane band 2, each short hurricane band 2 is welded on the inwall of heat exchanger tube body 1.
The spacing of adjacent short hurricane band 2 is 0.5d.
The width of described short hurricane band 2 is 0.15d.
The full pitch of the length of described short hurricane band 2 to be 0.5H, H be hurricane band.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (7)
1. a heat exchanger tube for interpolation interval hurricane band, is characterized in that, described heat exchanger tube is primarily of body and at least 2 short hurricane band compositions, and keep the axial spacing of 0.5 ~ 8d between adjacent short hurricane band, d is internal diameter of tube body; The width h of described short hurricane band and the ratio of internal diameter of tube body d are 0.15 ~ 0.45.
2. heat exchanger tube according to claim 1, is characterized in that, keeps the axial spacing of 2.5d between adjacent short hurricane band.
3. heat exchanger tube according to claim 1 and 2, is characterized in that, the width h of described short hurricane band and the ratio of internal diameter of tube body d are 0.3.
4. heat exchanger tube according to claim 1 and 2, is characterized in that, the full pitch of the length of described short hurricane band to be 0.5-4H, H be hurricane band.
5. heat exchanger tube according to claim 4, is characterized in that, the length of described short hurricane band is H.
6. heat exchanger tube according to claim 4, is characterized in that, connects between described short hurricane band with at least one thin bar spot welding.
7. heat exchanger tube according to claim 4, is characterized in that, described short hurricane band welds or is bonded on heat exchanger tube inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277687.3U CN204787980U (en) | 2015-04-30 | 2015-04-30 | Heat exchange tube of interpolation interval hurricane band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277687.3U CN204787980U (en) | 2015-04-30 | 2015-04-30 | Heat exchange tube of interpolation interval hurricane band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204787980U true CN204787980U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520277687.3U Active CN204787980U (en) | 2015-04-30 | 2015-04-30 | Heat exchange tube of interpolation interval hurricane band |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106358424A (en) * | 2016-10-18 | 2017-01-25 | 池州脉纬散热器有限责任公司 | Water-cooled heat sink with static mixer |
| CN109612320A (en) * | 2018-11-19 | 2019-04-12 | 江西省工业陶瓷工程技术研究中心 | For reducing the turbulent element and disturbed flow pipe of turbulent flow critical Reynolds number |
| CN111065880A (en) * | 2017-09-13 | 2020-04-24 | 开利公司 | Screw insert for shell and tube heat exchanger background |
-
2015
- 2015-04-30 CN CN201520277687.3U patent/CN204787980U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106358424A (en) * | 2016-10-18 | 2017-01-25 | 池州脉纬散热器有限责任公司 | Water-cooled heat sink with static mixer |
| CN111065880A (en) * | 2017-09-13 | 2020-04-24 | 开利公司 | Screw insert for shell and tube heat exchanger background |
| CN109612320A (en) * | 2018-11-19 | 2019-04-12 | 江西省工业陶瓷工程技术研究中心 | For reducing the turbulent element and disturbed flow pipe of turbulent flow critical Reynolds number |
| CN109612320B (en) * | 2018-11-19 | 2023-09-05 | 江西省工业陶瓷工程技术研究中心 | Turbulent flow element and turbulent flow pipe for reducing turbulence critical Reynolds number |
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