CN204902651U - Abnormal shape fin turbolator heat exchange tube and heat exchanger - Google Patents
Abnormal shape fin turbolator heat exchange tube and heat exchanger Download PDFInfo
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- CN204902651U CN204902651U CN201520645902.0U CN201520645902U CN204902651U CN 204902651 U CN204902651 U CN 204902651U CN 201520645902 U CN201520645902 U CN 201520645902U CN 204902651 U CN204902651 U CN 204902651U
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Abstract
The utility model discloses an abnormal shape fin turbolator heat exchange tube and heat exchanger, the heat exchange tube outer wall is equipped with the heterotypic fin of compriseing base circle and water conservancy diversion angle, and this fin can increase the area that working medium vapour and wall have more direct contact, reduces the heat transfer thermal resistance, increase heat exchange efficiency. Intraductal by the turbolator of compriseing positive spoiler and anti - spoiler, positive spoiler is fixed on the inside pipe wall by the fixed part, is connected the free end that positive spoiler is terminal with anti - spoiler. Utilize above -mentioned heat exchange tube preparation shell and tube type heat exchanger, include still that pipe case, casing, circulation are imported and exported, the liquid that condenses is imported, liquid outlet and baffling board condense. This heat exchange tube passes through the special construction of its outer wall abnormal shape fin and inner wall turbolator, improves the heat exchange efficiency of critical state heat exchanger, ability enhanced heat transfer, improvement heat transfer efficiency reduce heat transfer area under the equal operating mode.
Description
Technical field
The utility model relates to grain drying waste-heat recovery device, particularly relates to the heat exchanger of a kind of special-shaped fin turbolator heat exchanger tube and this heat exchanger tube of use.
Background technology
21st century environmental protection and energy-conservation be the important issue of scientific technological advance.In order to optimize the energy resource structure of China, improving efficiency of energy utilization, reducing CO2 emission, China actively develops the utilization of energy-saving and emission-reduction waste heat Waste Heat Recovery in recent years, and the waste heat that one side Devoting Major Efforts To Developing is not widely used improves energy utilization rate.China's grain yield accounts for 1/4 of the world, and grain has a large amount of low grade heat energies to be discharged in dry run while at substantial high-grade energy, and so not only a large amount of heat energy is discharged and slatterns, but also can cause thermal pollution to the ecological environment of surrounding.If utilize heat pump this part waste heat recovery not only can be improved the drying quality of grain but also play the benefits such as energy-saving and cost-reducing, environmental friendliness.Grain drying heat recovery technology not only can guarantee that grain was well stored but also can solve the waste of thermal source resource, improve energy utilization rate.
Grain drying heat recovery technology, as one of heat recovery major way, plays an important role.Condenser (heat exchanger tube) is the equipment that grain drying cycle fluid reclaims, there is important effect, to the performance impact of system comparatively greatly, its heat exchange and the raising of drooping characteristic to whole system efficiency play very important effect for its structure and heat transfer effect.Conventional Rankine power cycle condenser is low-temperature receiver with cooling water, and cooling water pressure is lower, only need overcome heat exchanger resistance.And grain drying waste-heat recovery device condenser take supercritical fluid as low-temperature receiver.Heat exchanger tube in common condenser pipe or heat exchanger is light face, and condensation water physical efficiency is wetting wall well, and wall upper berth generate film, at this moment liquid film layer just becomes the dominant thermal resistance of heat transfer, causes the problems such as heat transfer efficiency is low, heat exchange area is large.Simultaneously, owing to being subject to the heating of internal face in pipe, because the particularity of its own cryogenic high pressure forms stable helical flow in pipe, namely the whirlpool group spiral flow forward centered by the liquid core that temperature is lower, outer peripheral is around the higher liquid of temperature, although the centrifugal force rotated can be thrown to wall liquid lower for a part of temperature, but the liquid that most of temperature is lower is still gathered in pipeline center, cause heat transfer deterioration, reduce the heat exchange of the lower liquid of the interior temperature of pipe and tube wall, reduce the heat exchange efficiency of condenser.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of special-shaped fin turbolator heat exchanger tube and uses the heat exchanger of this heat exchanger tube, this heat exchanger tube passes through the special construction of the special-shaped fin of its outer wall and inwall turbolator, can solve on the one hand when from top to bottom dripping after devaporation becomes liquid in the problem that lower comb bundle formation liquid film brings heat transfer resistance to increase; On the other hand for critical condition steam, the Heat exchanger problem that the helical flow that can solve generation when liquid heats in pipe near critical condition causes, thus the heat exchange efficiency improving critical condition heat exchanger.
Know-why of the present utility model is: in the special-shaped fin turbolator heat exchanger tube that the utility model provides, steam is by special-shaped fin turbolator heat exchanger tube and the heat exchange of supercritical liq working medium.When steam contacts with the wall lower than saturation temperature, there is the coagulation forms that two kinds multi-form.If condensation water physical efficiency is wetting wall well, it is just at wall upper berth generate film.This coagulation forms is called film condensation.During film condensation, wall is always covered with by one deck liquid film, and the heat of transformation (latent heat) that condensation is released has to pass through liquid film and just can pass to cooling wall and get on.At this moment, liquid film layer just becomes the dominant thermal resistance of heat transfer.When coagulating liq well can not soak wall, coagulating liq forms little liquid pearl one by one on wall.No matter be film condensation or dropwise condensation, coagulating liq is all the thermal resistance carrier forming liquid and wall heat-shift.Obviously, the liquid level that steam and cold wall are separated more greatly, thicker, thermal resistance is larger.The utility model adopts the different in nature fin of band channelization angle, gravitate coagulating liq can be grown up and just to roll down along channelization angle after certain size, in the process rolled down, larger drop can be merged on the one hand with the liquid met, also avoid dropping onto lower comb bundle on the way on the other hand, thus make steam and wall have the how direct area contacted, reduce heat transfer resistance, increase heat exchange efficiency.The turbolator that heat exchanger tube inwall is arranged can break the stable helical flow of critical condition, in pipe, be particularly arranged alternately positive spoiler and anti-spoiler, the whirlpool group centered by the liquid core that the temperature of heat exchanger tube central area is lower can be distributed to the internal face of heat exchanger; When whirlpool centered by the liquid core that the working medium formation temperature along the disturbance of positive spoiler perturbation direction is higher is rolled into a ball, the reverse disturbance of anti-spoiler can be subject to again, make high and low temperature liquid dispersion to the periphery of pipe, thus improve heat transfer effect.
The technical scheme that the utility model provides is:
A kind of special-shaped fin turbolator heat exchanger tube, steam is by special-shaped fin turbolator heat exchanger tube and the heat exchange of supercritical liq working medium; Special-shaped fin turbolator heat exchanger tube comprises heat exchanger tube, special-shaped fin and turbolator; Special-shaped fin comprises basic circle and channelization angle, is the stamping forming special-shaped fin of entirety, is fixed on the outside of heat exchanger tube; Basic circle is hollow ring; The latter half of basic circle is provided with channelization angle; Have turbolator in heat exchanger tube, this turbolator comprises positive spoiler, fixed part, reverse junction and anti-spoiler, and the fixed part being arranged on heat exchanger tube inwall fixes positive spoiler front end, and the front end of anti-spoiler is connected to the end of positive spoiler, i.e. free end; Anti-spoiler is contrary with the perturbation direction of positive spoiler; Turbolator is arranged in repeatedly manages interior and all contacts with the wall of heat exchanger tube.
The hollow ring internal diameter of the basic circle of described special-shaped fin is identical with heat exchanger tube external diameter; Channelization angle and the basic circle of special-shaped fin are tangent, and two point of contacts respectively with the center of circle of basic circle in same level and vertical line, the limit of channelization angle is smooth curve and symmetrical; The channelization angle that the latter half of basic circle is provided with is one or two (corresponding special-shaped fin is divided into the special-shaped fin of single channelization angle and the special-shaped fin of two channelization angle); The distance in the summit of channelization angle and the center of circle of basic circle is greater than basic circle external diameter
doubly.
The difference of anti-spoiler and positive spoiler is that anti-spoiler has reverse junction; Positive spoiler and anti-spoiler are arranged alternately in pipe repeatedly.
The utility model also provides a kind of heat exchanger (condenser), this condenser is the shell-and-tube heat exchanger that special-shaped fin turbolator heat exchanger tube is housed, and comprises bobbin carriage, housing, heat exchanger tube, circulating fluid import, circulating fluid outlet, steam-gas inlet, coagulating liq outlet and deflection plate; Heat exchanger tube comprises multiple tube bank; The heat exchanger tube being placed in enclosure interior is positioned in the middle of bobbin carriage, and circulating fluid import and circulating fluid outlet are all located at the left side of bobbin carriage; Steam-gas inlet is located at the top of housing; Coagulating liq outlet is located at the below of housing; Deflection plate is located between the tube bank of heat exchanger tube.
The housing of heat exchanger can be circular cylinder body, also can be the cylindrical shell of square cylinder or other shapes.
The above-mentioned shell-and-tube heat exchanger that special-shaped fin turbolator is housed operationally, steam enters housing by the steam-gas inlet above housing, under the effect of deflection plate, steam is uniformly distributed, steam is forced evenly to pass through the special-shaped fin of tube bank and heat exchanger tube, thermal release is condensed into liquid to the supercritical liq (gas) in heat exchanger tube, is exported by coagulating liq and discharge.Supercritical liq (circulating fluid) then enters above-mentioned heat exchanger tube from import by bobbin carriage, in homogeneous temperature mixed flow under the effect of the turbolator in above-mentioned heat exchanger tube, and from steam, absorb heat by heat exchanger tube, supercritical liq temperature in pipe raises or is converted to gas, finally exports discharge through bobbin carriage by circulating fluid.
Operationally, heat exchanger carries out heat exchange in the overcritical working medium of tube side flow and the steam of shell fluid flow to above-mentioned shell-and-tube heat exchanger.The flow process of flowing can be single process, also can be double-flow or multipaths.
Compared with prior art, the beneficial effects of the utility model are:
The utility model provides a kind of special-shaped fin turbolator heat exchanger tube and uses the condenser of this heat exchanger tube, this heat exchanger tube passes through the special construction of the special-shaped fin of its outer wall and inwall turbolator, can solve on the one hand when from top to bottom dripping after devaporation becomes liquid in the problem that lower comb bundle formation liquid film brings heat transfer resistance to increase; On the other hand for critical condition steam, the Heat exchanger problem that the helical flow that can solve generation when liquid heats in pipe near critical condition causes, thus the heat exchange efficiency improving critical condition heat exchanger.
The utility model adopts the different in nature fin of band channelization angle, gravitate coagulating liq can be grown up and just to roll down along channelization angle after certain size, in the process rolled down, larger drop can be merged on the one hand with the liquid met, also avoid dropping onto lower comb bundle on the way on the other hand, thus make steam and wall have the how direct area contacted, reduce heat transfer resistance, increase heat exchange efficiency.The turbolator that heat exchanger tube inwall is arranged can break the stable helical flow of critical condition, in pipe, be particularly arranged alternately positive spoiler and anti-spoiler, the whirlpool group centered by the liquid core that the temperature of heat exchanger tube central area is lower can be distributed to the internal face of heat exchanger; When whirlpool centered by the liquid core that the working medium formation temperature along the disturbance of positive spoiler perturbation direction is higher is rolled into a ball, the reverse disturbance of anti-spoiler can be subject to again, make high and low temperature liquid dispersion to the periphery of pipe, thus improve heat transfer effect.Under equal operating mode, can augmentation of heat transfer, improve heat transfer efficiency, reduce heat exchange area.
Accompanying drawing explanation
The structure chart of the special-shaped fin of single channelization angle that Fig. 1 provides for the utility model embodiment;
The structure chart of the special-shaped fin of two channelization angles that Fig. 2 provides for the utility model embodiment;
In Fig. 1 ~ Fig. 2,1-special-shaped fin basic circle; 2-special-shaped fin flow guiding angle; The centre bore of 3-special-shaped fin basic circle; The center of circle of O-basic circle 1; A-channelization angle 2 with fin basic circle 1 tangent and with the center of circle O point of contact in the same horizontal line of basic circle 1; B-channelization angle 2 with fin basic circle 1 tangent and with the point of contact of center of circle O on same vertical line of basic circle 1.
The normal cross-section structure chart of the special-shaped fin turbolator heat exchanger tube that Fig. 3 provides for the utility model embodiment;
Wherein, (a) positive flow-disturbing profile that is turbolator; B anti-turbolator profile that () is turbolator; 1-special-shaped fin basic circle; 2-special-shaped fin flow guiding angle; 4-heat exchanger tube; 5-positive spoiler; 6-fixed part; 7-reverse junction; 8-inside pipe wall; 9-anti-spoiler.
The structure chart that the shell-and-tube heat exchanger of special-shaped fin turbolator heat exchanger tube is set that Fig. 4 provides for the utility model embodiment;
Wherein, 10-shell-and-tube heat exchanger; 11-bobbin carriage; 12-housing; 4-heat exchanger tube; The import of 13-circulating fluid; 14-circulating fluid exports; 15-steam-gas inlet; 16-coagulating liq exports; 17-deflection plate.
Detailed description of the invention
Below in conjunction with accompanying drawing, further describe the utility model by embodiment, but limit scope of the present utility model never in any form.
The utility model provides a kind of special-shaped fin turbolator heat exchanger tube, and steam is by special-shaped fin turbolator heat exchanger tube and the heat exchange of supercritical liq working medium; Special-shaped fin turbolator heat exchanger tube comprises heat exchanger tube, special-shaped fin and turbolator; Special-shaped fin is made up of basic circle and channelization angle, is the stamping forming special-shaped fin of entirety, is fixed on the outside of heat exchanger tube; The latter half of basic circle is provided with channelization angle; Have turbolator in heat exchanger tube, this turbolator comprises positive spoiler, fixed part, reverse junction and anti-spoiler, and the fixed part being arranged on heat exchanger tube inwall fixes positive spoiler front end, and the front end of anti-spoiler is connected to the end of positive spoiler, i.e. free end; Anti-spoiler is contrary with the perturbation direction of positive spoiler; Turbolator is arranged in repeatedly manages interior and all contacts with the wall of heat exchanger tube.
As depicted in figs. 1 and 2, special-shaped fin is made up of basic circle 1 and channelization angle 2, can be divided into the special-shaped fin of single channelization angle and the special-shaped fin of two channelization angle according to the number of channelization angle 2, the structure chart of the special-shaped fin of single channelization angle that Fig. 1 provides for the utility model embodiment; The structure chart of the special-shaped fin of two channelization angles that Fig. 2 provides for the utility model embodiment.Channelization angle 2 is tangent with fin basic circle 1, and the center of circle O of point of contact A and basic circle 1 in the same horizontal line, and point of contact B should with the center of circle O of basic circle 1 on same vertical line.Centre bore 3 diameter of definition basic circle 1 is the internal diameter of basic circle 1, and the outmost turns diameter of basic circle 1 is basic circle external diameter.The internal diameter of basic circle 1 equals heat exchanger tube external diameter, and the external diameter of basic circle 1 can regulate according to different operating mode.The distance DO of the summit D of channelization angle 2 and the center of circle O of basic circle 1 is greater than
oA, and can regulate according to different operating modes; Limit DA, DB of channelization angle are smooth curve, and symmetrical about OD.Basic circle 1 and the channelization angle 2 of special-shaped fin are overall punch forming.
Fig. 3 is the structural representation of the heat exchanger tube local normal cross-section of the special-shaped fin turbolator of the utility model, wherein 1 is special-shaped fin basic circle, 2 is special-shaped fin flow guiding angle, 4 is heat exchanger tube, and 5 is positive spoiler, and 6 is fixed part, 7 is reverse junction, 8 is inside pipe wall, and 9 is anti-spoiler, and the special-shaped fin be made up of basic circle 1 and channelization angle 2 is fixed on the outside of heat exchanger tube 4.Adopt the different in nature fin of band channelization angle, gravitate coagulating liq can be grown up and just to roll down along channelization angle after certain size, in the process rolled down, larger drop can be merged on the one hand with the liquid met, also coagulating liq is avoided to drop onto lower comb bundle and form liquid film on the other hand, thus make steam and wall have the how direct area contacted, reduce heat transfer resistance, increase heat exchange efficiency.The effect of the reverse junction 7 on anti-spoiler 9 changes originally to flow to as opposite course, if definition has the spoiler of a reverse junction to be anti-spoiler, indicated by the solid line, and is reverse disturbance, the spoiler of reverse junction is not then had to be positive spoiler, represented by dashed line and be forward disturbance; Vice versa.The fixed part 6 be arranged on inside pipe wall 8 fixes positive spoiler 5 front end, and the end of positive spoiler 5 is free ends, the head end of anti-spoiler 9 is fixed on the end of positive spoiler 5.Like this, form clockwise periodic disturbance when overcritical working medium flows near positive spoiler 5, form the components of flow turned clockwise.Form anticlockwise periodic disturbance when overcritical working medium flows near anti-spoiler 9, form the components of flow be rotated counterclockwise.No matter be clockwise disturbance or counterclockwise disturbance, all can destroy the particularity that near critical condition, overcritical working medium is own, in pipe, form stable helical flow, thus strengthen the uniformity of overcritical working medium.
Fig. 4 is the structural representation that the utility model embodiment adopts the shell-and-tube heat exchanger of special-shaped fin turbolator heat exchanger tube.Utilize above-mentioned heat exchanger tube can make shell-and-tube heat exchanger 10, comprise bobbin carriage 11, housing 12, heat exchanger tube 4, circulating fluid import 13, circulating fluid outlet 14, steam-gas inlet 15, coagulating liq outlet 16 and deflection plate 17.Be placed in the heat exchanger tube 4 of housing 12 inside between bobbin carriage 11, circulating fluid import 13 and circulating fluid outlet 14 are all located at the left side of bobbin carriage 11; Steam-gas inlet 15 is located at the top of housing 12; Coagulating liq outlet 16 is located at the below of housing 12; Deflection plate 17 is located between the tube bank of heat exchanger tube 4.
Above-mentioned shell-and-tube heat exchanger 10 operationally, steam enters housing 12 by the steam-gas inlet 15 above housing 12, under the effect of deflection plate 17, steam is uniformly distributed, steam is forced evenly to pass through the special-shaped fin of tube bank and heat exchanger tube 4, thermal release is condensed into liquid to the supercritical liq (gas) in heat exchanger tube, exports 16 by coagulating liq and discharge.Supercritical liq (circulating fluid) then enters above-mentioned heat exchanger tube 4 from import 13 by bobbin carriage 11, in homogeneous temperature mixed flow under the effect of the turbolator in above-mentioned heat exchanger tube 4, and from steam, absorb heat by heat exchanger tube 4, heat up after supercritical liq in pipe absorbs heat or be converted to gas, finally being discharged by outlet 14 through bobbin carriage 11.
It should be noted that, the object publicizing and implementing example is to help to understand the utility model further, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the utility model and claims, various substitutions and modifications are all possible.Therefore, the utility model should not be limited to the content disclosed in embodiment, and the scope that the claimed scope of the utility model defines with claims is as the criterion.
Claims (10)
1. a special-shaped fin turbolator heat exchanger tube, comprises heat exchanger tube, special-shaped fin and turbolator;
Described special-shaped fin comprises basic circle and channelization angle, is fixed on the outside of described heat exchanger tube; Described basic circle is hollow ring; The latter half of described basic circle is provided with described channelization angle;
Be provided with turbolator in described heat exchanger tube, described turbolator comprises positive spoiler, fixed part, reverse junction and anti-spoiler; The fixed part being arranged on heat exchanger tube inwall fixes the front end of positive spoiler; The front end of anti-spoiler is connected to the end of positive spoiler, is free end; Anti-spoiler is contrary with the perturbation direction of positive spoiler;
Described turbolator to be repeatedly arranged in described heat exchanger tube and all to contact with the wall of described heat exchanger tube.
2. special-shaped fin turbolator heat exchanger tube as claimed in claim 1, is characterized in that, described special-shaped fin is overall stamping forming special-shaped fin; The hollow ring internal diameter of the basic circle of described special-shaped fin is identical with the external diameter of described heat exchanger tube.
3. special-shaped fin turbolator heat exchanger tube as claimed in claim 1, it is characterized in that, channelization angle and the basic circle of described special-shaped fin are tangent, and two point of contacts respectively with the center of circle of basic circle in same level and vertical line.
4. special-shaped fin turbolator heat exchanger tube as claimed in claim 1, is characterized in that, the limit of described channelization angle is smooth curve and symmetrical; The distance in the summit of described channelization angle and the center of circle of basic circle is greater than basic circle external diameter
doubly.
5. special-shaped fin turbolator heat exchanger tube as claimed in claim 1, it is characterized in that, described channelization angle is one or two.
6. special-shaped fin turbolator heat exchanger tube as claimed in claim 1, it is characterized in that, the anti-spoiler of described turbolator has reverse junction.
7. a heat exchanger, described heat exchanger is shell-and-tube heat exchanger, comprises bobbin carriage, housing, circulating fluid import, circulating fluid outlet, steam-gas inlet, coagulating liq outlet and deflection plate; It is characterized in that, described heat exchanger is equipped with special-shaped fin turbolator heat exchanger tube, and described special-shaped fin turbolator heat exchanger tube comprises heat exchanger tube, special-shaped fin and turbolator;
Described special-shaped fin comprises basic circle and channelization angle, is fixed on the outside of described heat exchanger tube; Described basic circle is hollow ring; The latter half of described basic circle is provided with described channelization angle;
Be provided with turbolator in described heat exchanger tube, described turbolator comprises positive spoiler, fixed part, reverse junction and anti-spoiler; The fixed part being arranged on heat exchanger tube inwall fixes the front end of positive spoiler; The front end of anti-spoiler is connected to the end of positive spoiler, is free end; Anti-spoiler is contrary with the perturbation direction of positive spoiler;
Described turbolator to be repeatedly arranged in described heat exchanger tube and all to contact with the wall of described heat exchanger tube.
8. heat exchanger as claimed in claim 7, it is characterized in that, described special-shaped fin turbolator heat exchanger tube is placed in enclosure interior, and is positioned in the middle of bobbin carriage, and circulating fluid import and circulating fluid outlet are all located at the left side of bobbin carriage; Steam-gas inlet is located at the top of housing; Coagulating liq outlet is located at the below of housing; Deflection plate is located between the tube bank of heat exchanger tube; Described special-shaped fin turbolator heat exchanger operationally, steam enters housing by the steam-gas inlet above housing, under the effect of deflection plate, steam is uniformly distributed, steam is forced evenly to pass through the special-shaped fin of tube bank and heat exchanger tube, thermal release is condensed into liquid to the supercritical liq in heat exchanger tube, is exported by coagulating liq and discharge; Supercritical liq then enters above-mentioned heat exchanger tube from import by bobbin carriage, in homogeneous temperature mixed flow under the effect of the turbolator in above-mentioned heat exchanger tube, and from steam, absorbing heat by heat exchanger tube, the supercritical liq in pipe finally exports discharge through bobbin carriage by circulating fluid.
9. heat exchanger as claimed in claim 8, it is characterized in that, described heat exchanger carries out heat exchange in the overcritical working medium of tube side flow and the steam of shell fluid flow; The flow process of described flowing is single process, double-flow or multipaths.
10. heat exchanger as claimed in claim 7, it is characterized in that, the housing of heat exchanger is the cylindrical shell of circular cylinder body, square cylinder or other shapes.
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| CN201520645902.0U CN204902651U (en) | 2015-08-25 | 2015-08-25 | Abnormal shape fin turbolator heat exchange tube and heat exchanger |
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| CN201520645902.0U CN204902651U (en) | 2015-08-25 | 2015-08-25 | Abnormal shape fin turbolator heat exchange tube and heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066763A (en) * | 2015-08-25 | 2015-11-18 | 北京大学 | Heat exchange tube with special-shaped fins and turbulators and heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066763A (en) * | 2015-08-25 | 2015-11-18 | 北京大学 | Heat exchange tube with special-shaped fins and turbulators and heat exchanger |
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