CN108895863B - Air-liquid cooling integrated high-efficiency heat exchange tube - Google Patents
Air-liquid cooling integrated high-efficiency heat exchange tube Download PDFInfo
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- CN108895863B CN108895863B CN201810554811.4A CN201810554811A CN108895863B CN 108895863 B CN108895863 B CN 108895863B CN 201810554811 A CN201810554811 A CN 201810554811A CN 108895863 B CN108895863 B CN 108895863B
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- outer sleeve
- heat exchange
- temperature
- air
- fins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/02—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by influencing fluid boundary
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses an air-liquid cooling integrated high-efficiency heat exchange tube which comprises an outer sleeve and a core tube coaxially arranged in the outer sleeve, so that a high-temperature fluid area which is positioned in the outer sleeve and outside the core tube and has an annular cross section is formed; the core pipe is used for conveying low-temperature cold-carrying media, and the high-temperature fluid area is used for conveying high-temperature high-viscosity fluid to be cooled. The spiral reducing spring is sleeved on the core pipe, the inner side of the minimum diameter position of the reducing spring is in contact with the outer wall of the core pipe, and the outer side of the maximum diameter position of the reducing spring is in contact with the inner wall of the outer sleeve. According to the invention, the high-temperature high-viscosity fluid is cooled by air through the outer sleeve, and the high-temperature high-viscosity fluid is cooled by liquid through the low-temperature cold carrying medium in the core tube, so that integrated air-liquid cooling heat exchange is realized, the temperature of the high-viscosity fluid is rapidly reduced, the size of heat exchange equipment is remarkably reduced, and the occupied space is reduced.
Description
Technical Field
The invention relates to an air-liquid cooling integrated high-efficiency heat exchange tube which is widely applied to the industrial fields of environment, energy, power, petrifaction and the like.
Background
The conventional oil cooler has the disadvantage that the thermal resistance of the oil side is large, and the heat exchange area needs to be increased to reach the expected heat exchange amount. If the flow speed is increased blindly, the heat exchange coefficient is increased limitedly and the resistance drop caused by the high-viscosity fluid is larger.
The documents "Experimental study on the Pressure drop and Heat Transfer characteristics" (authors: YuB, Nie J H, Tao WQ, published sources: Heat and Transfer, 1999,35 (1): 65-73) and the documents "Pressure drop and Heat Transfer characteristics of radial flow in annular tubes with internal flow-longitudinal fins", 2004,40: 643) propose a corrugated one with longitudinal obstruction at both ends, and the Heat Transfer and characteristics thereof are studied, Experimental resistance, longitudinal flow resistance, and longitudinal flow resistance increase of the same pump head, but the effect of increasing the internal area of the tube is generally 10 times that of the tube head 8. On the basis, the university of the western's safety traffic proposes a reinforced heat exchange tube (application number CN 200510041808.5), which can enhance the heat transfer of the air inner finned tube heat exchanger and reduce the volume of the heat exchanger. However, the heat exchange tube only uses one cooling mode of air cooling, and the heat exchange effect is limited.
Therefore, the heat exchange device in the prior art is difficult to meet the requirement of quickly cooling the high-viscosity fluid.
Disclosure of Invention
The invention provides an air-liquid cooling integrated high-efficiency heat exchange tube, which aims to: the temperature of the highly viscous fluid is rapidly lowered.
The technical scheme of the invention is as follows:
an air-liquid cooling integrated high-efficiency heat exchange tube comprises an outer sleeve and a core tube coaxially arranged in the outer sleeve, so that a high-temperature fluid area which is positioned in the outer sleeve and outside the core tube and has an annular cross section is formed; the core pipe is used for conveying low-temperature cold-carrying media, and the high-temperature fluid area is used for conveying high-temperature high-viscosity fluid to be cooled.
As a further improvement of the invention: the spiral reducing spring is sleeved on the core pipe, the inner side of the minimum diameter position of the reducing spring is in contact with the outer wall of the core pipe, and the outer side of the maximum diameter position of the reducing spring is in contact with the inner wall of the outer sleeve.
As a further improvement of the invention: the inner surface of the core pipe is provided with fins.
As a further improvement of the invention: and fins are also arranged on the outer side of the outer sleeve.
As a further improvement of the invention: the inner end of each fin is connected with the outer wall of the outer sleeve; every two fins are arranged in a group in an opposite inclined manner, gaps are reserved between the outer ends of the same group of fins, and the included angle between the outer ends of the same group of fins is 3-30 degrees, so that a triangular channel which gradually narrows outwards along the radial direction of the outer sleeve is formed; the fins are provided with air inlet holes.
As a further improvement of the invention: the air inlet holes are round or triangular or rectangular.
As a further improvement of the invention: the air inlet is processed by a flanging process, and the flanging faces to the lower part of the outer side of the triangular channel.
Compared with the prior art, the invention has the following positive effects: (1) according to the invention, the high-temperature high-viscosity fluid is cooled by air through the outer sleeve, and meanwhile, the high-temperature high-viscosity fluid is cooled by liquid through the low-temperature cold-carrying medium in the core tube, so that integrated heat exchange of air and liquid is realized, the temperature of the high-viscosity fluid is rapidly reduced, the size of heat exchange equipment is remarkably reduced, and the occupied space is reduced; (2) special-shaped fins are added outside the outer sleeve to improve the air cooling heat exchange effect; (3) the outer side of the special-shaped disturbance variable-diameter spring is attached to the inner wall of the outer sleeve, and the inner side of the special-shaped disturbance variable-diameter spring is attached to the outer wall of the core tube, so that on one hand, the special-shaped disturbance variable-diameter spring can continuously vibrate along with the flowing of the high-viscosity fluid to destroy the thermal boundary of the high-viscosity fluid on the inner and outer tube walls, on the other hand, the variable-diameter spring can be used as a temperature transmission medium to assist in; (4) the external fins and the heat exchange tube form a certain included angle, self-organization optimization of a wind field is achieved through control of the flanging structure and the included angle, and the air cooling effect is further improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural view of a spring wire.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings:
referring to fig. 1 and 2, an air-liquid cooling integrated high-efficiency heat exchange tube comprises an outer sleeve 2 and a core tube 1 coaxially arranged in the outer sleeve 2, thereby forming a high-temperature fluid region which is positioned in the outer sleeve 2 and outside the core tube 1 and has an annular cross-sectional shape; the core tube 1 is used for conveying low-temperature cold-carrying media, and the high-temperature fluid area is used for conveying high-temperature high-viscosity fluid to be cooled.
The outer surface of the core tube 1 is smooth, fins are arranged on the inner surface of the core tube, a spiral reducing spring 4 is further sleeved on the core tube 1, the diameter of the spring wire is 0.2-10 mm, the cross section of the spring wire is formed by multiple sections of arcs, and the spring wire comprises at least three different winding ratios and three different intermediate diameters. The inner side of the minimum diameter part of the reducing spring 4 is contacted with the outer wall of the core tube 1, and the outer side of the maximum diameter part is contacted with the inner wall of the outer sleeve 2. The structural shape of reducing spring 4 is as shown in fig. 3, and on the one hand, reducing spring 4 can constantly vibrate along with high viscous fluid's flow, destroys the hot boundary on the outer pipe wall including high viscous fluid, and on the other hand, reducing spring 4 can assist the temperature that reduces in the outer tube 2 as temperature transmission medium, plays the vortex effect simultaneously, promotes the cooling effect.
As shown in fig. 1, fins 3 are further installed outside the outer sleeve 2 for improving the air cooling effect. The inner end of each fin 3 is connected with the outer wall of the outer sleeve 2; every two fins 3 of a pair of a set of relative slope setting, leave the clearance between the outer end of the fin 3 of the same set, and the contained angle is 3 to 30 degrees each other to constitute along the outside triangle-shaped passageway that narrows gradually of outer tube 2 radial direction.
The fin 3 is provided with an air inlet hole which is round, triangular or rectangular, and can be in any other shape.
Preferably, the air inlet holes are processed by a flanging process, and the flanging faces to the lower part of the outer side of the triangular channel.
The self-organization optimization of the wind field can be realized through the control of the flanging structure and the included angle of the flanging structure, and the air cooling effect is further improved.
Still provide a heat exchanger based on integrative high-efficient heat exchange tube of cavity liquid cooling of this embodiment, include outside the heat exchange tube, still include the first feed pipe that is used for carrying low temperature to carry cold medium in the core pipe 1 and be used for carrying the second feed pipe of the high-temperature high viscous fluid that waits to cool down to the high temperature fluid region.
When the high-temperature high-viscosity fluid cooling device works, high-temperature high-viscosity fluid flows through a high-temperature fluid area, the outside of the high-temperature high-viscosity fluid area is subjected to air cooling through the outer sleeve 2 and the fins 3, the inside of the high-temperature high-viscosity fluid area is subjected to liquid cooling through the core pipe 1, and the air cooling and liquid cooling are integrated for heat exchange, so.
Claims (4)
1. The utility model provides an integrative high-efficient heat exchange tube of air-liquid cooling which characterized in that: the device comprises an outer sleeve (2) and a core tube (1) coaxially arranged in the outer sleeve (2), so that a high-temperature fluid area which is positioned in the outer sleeve (2) and outside the core tube (1) and has an annular cross section is formed; the core pipe (1) is used for conveying low-temperature cold-carrying medium, and the high-temperature fluid area is used for conveying high-temperature high-viscosity fluid to be cooled;
the spiral reducing spring (4) is sleeved on the core pipe (1), the inner side of the minimum diameter part of the reducing spring (4) is contacted with the outer wall of the core pipe (1), and the outer side of the maximum diameter part is contacted with the inner wall of the outer sleeve (2);
fins (3) are further mounted on the outer side of the outer sleeve (2);
the inner end of each fin (3) is connected with the outer wall of the outer sleeve (2); every two fins (3) are arranged in a group in an opposite inclined way, a gap is reserved between the outer ends of the same group of fins (3), and the included angle between the outer ends is 3-30 degrees, so that a triangular channel which is gradually narrowed outwards along the radial direction of the outer sleeve (2) is formed; the fins (3) are provided with air inlet holes.
2. The air-liquid cooled integrated high efficiency heat exchange tube of claim 1, wherein: the inner surface of the core pipe (1) is provided with fins.
3. The air-liquid cooled integrated high efficiency heat exchange tube of claim 1, wherein: the air inlet holes are round or triangular or rectangular.
4. The air-liquid cooled integrated high efficiency heat exchange tube of claim 1, wherein: the air inlet is processed by a flanging process, and the flanging faces to the lower part of the outer side of the triangular channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810554811.4A CN108895863B (en) | 2018-06-01 | 2018-06-01 | Air-liquid cooling integrated high-efficiency heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810554811.4A CN108895863B (en) | 2018-06-01 | 2018-06-01 | Air-liquid cooling integrated high-efficiency heat exchange tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108895863A CN108895863A (en) | 2018-11-27 |
| CN108895863B true CN108895863B (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810554811.4A Active CN108895863B (en) | 2018-06-01 | 2018-06-01 | Air-liquid cooling integrated high-efficiency heat exchange tube |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116167175A (en) * | 2022-09-05 | 2023-05-26 | 上海飞象健康科技有限公司 | Design method of turbulent flow pipeline structure based on Karman vortex street theory |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61147096A (en) * | 1984-12-20 | 1986-07-04 | Matsushita Refrig Co | Cooler |
| DE3813501A1 (en) * | 1988-04-22 | 1989-11-09 | Licentia Gmbh | COUNTERFLOW HEAT EXCHANGER |
| CN1253274A (en) * | 1998-11-02 | 2000-05-17 | 美国心爱鸡禽公司 | Vortex generator of deep frying pot heat exchanger |
| US6119769A (en) * | 1998-08-05 | 2000-09-19 | Visteon Global Technologies, Inc. | Heat transfer device |
| CN2413258Y (en) * | 1999-05-24 | 2001-01-03 | 上海得灵电器实业有限公司 | Spiral heat-transfer tube |
| CN2551953Y (en) * | 2002-06-18 | 2003-05-21 | 吴连宝 | Energy converter |
| CN203928803U (en) * | 2014-04-11 | 2014-11-05 | 徐州工程学院 | Wear sheet fin |
| CN205138271U (en) * | 2015-08-06 | 2016-04-06 | 江门市顺恩牛奶有限公司 | Spiral sleeve pipe heat exchange device of liquid |
-
2018
- 2018-06-01 CN CN201810554811.4A patent/CN108895863B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61147096A (en) * | 1984-12-20 | 1986-07-04 | Matsushita Refrig Co | Cooler |
| DE3813501A1 (en) * | 1988-04-22 | 1989-11-09 | Licentia Gmbh | COUNTERFLOW HEAT EXCHANGER |
| US6119769A (en) * | 1998-08-05 | 2000-09-19 | Visteon Global Technologies, Inc. | Heat transfer device |
| CN1253274A (en) * | 1998-11-02 | 2000-05-17 | 美国心爱鸡禽公司 | Vortex generator of deep frying pot heat exchanger |
| CN2413258Y (en) * | 1999-05-24 | 2001-01-03 | 上海得灵电器实业有限公司 | Spiral heat-transfer tube |
| CN2551953Y (en) * | 2002-06-18 | 2003-05-21 | 吴连宝 | Energy converter |
| CN203928803U (en) * | 2014-04-11 | 2014-11-05 | 徐州工程学院 | Wear sheet fin |
| CN205138271U (en) * | 2015-08-06 | 2016-04-06 | 江门市顺恩牛奶有限公司 | Spiral sleeve pipe heat exchange device of liquid |
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| Publication number | Publication date |
|---|---|
| CN108895863A (en) | 2018-11-27 |
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