CN105157465B - A kind of right angle plate fin that bur is set - Google Patents
A kind of right angle plate fin that bur is set Download PDFInfo
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- CN105157465B CN105157465B CN201510658681.5A CN201510658681A CN105157465B CN 105157465 B CN105157465 B CN 105157465B CN 201510658681 A CN201510658681 A CN 201510658681A CN 105157465 B CN105157465 B CN 105157465B
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Abstract
The invention provides a kind of right angle plate fin for the condensation of non-azeotrope multicomponent mixture, the fin includes horizontal component and vertical component, the vertical component is connected and orthogonal with horizontal component, it is characterized in that, bur is processed by impact style on vertical component, so that the fluid of vertical component both sides is connected by the hole that impact style on vertical component is formed；The bur stretches out from vertical component along mixture flow direction.The invention provides a kind of new plate fin used suitable for being condensed in non-azeotrope multicomponent mixture, so as to solve the condensation of the different multicomponent blending agent of boiling point, to improve heat exchange efficiency, fluid flow resistance is reduced.
Description
Technical field
The invention belongs to field of heat exchangers, more particularly to the heat exchanger that a kind of condensation of different boiling blending agent is used, category
In the field of heat exchangers of F28D.
Background technology
The condensation of different boiling blending agent is that (main component is -162 DEG C of methane of boiling point, -88 DEG C of boiling point for natural gas liquefaction
Ethane, -42 DEG C of propane of boiling point etc.), air separate, azeotrope refrigeration, oil or cracking waste plastics, the row such as biogas production
The main processes of industry.To reduce the available energy loss of technical process, such production technology wishes cold step by step according to temperature level
But the component of different boiling is separated out, heat exchange itself is also carried out in different temperatures interval with one refrigerant or product, therefore
It is required that condensing plant conveniently realizes that multiply medium exchanges heat simultaneously.Can conveniently realize that the equipment that multiply medium exchanges heat simultaneously is main at present
It is two kinds of spiral winding heat exchange of heat pipe and plate-fin heat exchanger.Spiral winding heat exchange of heat pipe is shell structure, and pressure-bearing is higher, application
It is wide, but be difficult to take enhanced heat transfer measure, the coefficient of heat transfer is relatively low, and volume and weight is difficult to reduce.Plate-fin heat exchanger with
The improvement of manufacturing process in recent years, bearing capacity is gradually stepped up.With the advantage that its heat transfer coefficient is higher, more compact, weight is lighter,
There is the trend of substitution winding heat exchange of heat pipe in many occasions such as natural gas liquefaction.
Although plate-fin heat exchanger is in boiling, and similarly hereinafter sample can provide the coefficient of heat transfer higher with the variable working condition of condensation phase, existing
The mechanismic design that the fin configuration for having plate-fin heat exchanger exchanges heat primarily directed to single-phase medium (it is important that gas phase media)：It is flat
Straight fins are to extend heat exchange area and reduce hydraulic diameter；Corrugated fin, saw tooth fin, louvered fin are in expanding surface
The thinning boundary layer of fluid is disturbed on the basis of product；The fin with apertures, the piece band fin that are applicable to phase-change heat-exchange are recognized for cold
The continuity of liquid film can be destroyed during solidifying heat exchange, but is also proved that effect has excellent unlike plain fin in high reynolds number operating mode
Gesture.
There is substantially the thermal resistance mechanism of non-azeotrope multicomponent blending agent condensation with pure component material condensation in natural gas liquefaction
Difference, theory analysis and experiment are proved the coefficient of heat transfer substantially to be reduced than pure component condensation.It is existing cold to non-azeotrope blending agent
The research of solidifying heat exchange is focusing more on containing a kind of operating mode of on-condensible gas, is subtracted using measures such as low groove, Artificial roughness surfaces
Small average thickness of liquid film is proved the measure that effect is protruded when pure component is condensed, and effect is not sometimes in the case of containing on-condensible gas
Substantially., and natural gas liquefaction, the condensing heat-exchange process of petroleum cracking industry and mechanism are increasingly complex, condensation process is generally comprised
Two or more on-condensible gases, heat exchange situation is more complicated.
Regarding to the issue above, the invention provides a kind of new plate fin and plate-fin heat exchanger, so as to solve boiling point
The condensation of different multicomponent blending agents.
The content of the invention
The invention provides a kind of new plate-fin heat exchanger, so as to solve the cold of the different multicomponent blending agent of boiling point
It is solidifying, to improve heat exchange efficiency, reduce fluid flow resistance.
To achieve these goals, technical scheme is as follows：
A kind of right angle plate fin for the condensation of non-azeotrope multicomponent mixture, the fin includes horizontal component and hangs down
Straight part, the vertical component is connected and orthogonal with horizontal component, it is characterised in that pass through punching press side on vertical component
Formula processes bur, so that the fluid of vertical component both sides is connected by the hole that impact style on vertical component is formed；It is described prominent
Thorn stretches out from vertical component along mixture flow direction.
A kind of plate-fin heat exchanger for the condensation of non-azeotrope multicomponent mixture, the plate-fin heat exchanger includes mutual
Parallel plate, sets fin between the plate, the fin includes the vertical component perpendicular to plate, it is characterised in that
Bur is processed by impact style on vertical component, so that the fluid of vertical component both sides is by punching press side on vertical component
The hole connection that formula is formed；The bur stretches out from vertical component along mixture flow direction.
Preferably, the fin include horizontal component and vertical component, the horizontal component it is parallel with plate and with
Plate is sticked together, and the vertical component is connected with horizontal component.
Preferably, the bur is isosceles triangle, the base of the isosceles triangle is arranged on vertical component, and
And perpendicular to plate, the distance of adjacent plate is H, and the length on isosceles triangle base is h, the distance of adjacent vertical component
It is w, the drift angle of isosceles triangle is b, and the bearing of trend of the bur is a with the angle of the flow direction of mixture, and L is isosceles
Vertex of a triangle meets equation below to the distance at base midpoint：
7*h/H=c1*Ln (L*sin (a)/w)+c2,
Sin (b/2)=c3+c4*sin (a)-c5* (sin (a))2,
Wherein Ln is logarithmic function, and c1, c2, c3, c4, c5 are coefficients,
0.24<c1<0.25,0.68<c2<0.70,0.87<c3<0.88,0.68<c4<0.70,1.14<c5<1.15；
19°<a<71 °, 55 °<b<165°；
10mm<w<15mm, 6mm<H<14mm；
0.19<L*sin(a)/w<0.41,0.29<7*h/H<0.47；
H is that, with the distance between relative face of adjacent plate, W is with the distance in the relative face of adjacent vertical component.
Preferably, c1=0.2461, c2=0.691,
C3=0.875, c4=0,6987, c5=1.1439.
Preferably, the bearing of trend of the bur is a with the angle of the flow direction of mixture, same vertical component
Multiple burs are set, and along the flow direction of mixture, described angle a is less and less.
Preferably, same vertical component sets multiple burs, multiple burs interlock from the epitaxial lateral overgrowth of vertical component two
Stretch.
Preferably, the length that the bur extends is L, same vertical component sets multiple burs, along mixture
Flow direction, described length L is less and less.
Preferably, the bur is isosceles triangle, the base of the isosceles triangle is arranged on vertical component, and
And perpendicular to plate, the drift angle of the isosceles triangle is b, and same vertical component sets multiple burs, along mixture
Flow direction, described drift angle b is increasing.
Preferably, the bur is isosceles triangle, the base of the isosceles triangle is arranged on vertical component, and
And perpendicular to plate, the base of the isosceles triangle is S1, and same vertical component sets multiple burs, along mixture
Flow direction, described S1 is less and less.
Preferably, same vertical component sets multiple burs, the distance of adjacent bur is S2, along the stream of mixture
Dynamic direction, described S2 is increasing.
Compared with prior art, plate type heat exchanger of the invention and its heat exchange plate have the following advantages：
1) bur of punching press is applied to the present invention plate-fin heat exchanger of azeotropic multicomponent mixture condensation first, is overcome
Plate-fin heat exchanger heat exchange efficiency low problem for a long time, it will be apparent that improve heat exchange efficiency.
2) laminar sublayer on the one hand can be destroyed, on the other hand compared with " punching " fin, not because of punching loss heat-transfer surface
Product, and " thorn " and " hole " can disturb fluid on different height respectively, strengthen different thermal resistance links；
3) aperture that punching press " aculea " is formed, by the influence of " aculea " downstream pressure, is capable of achieving fin media of both sides
Pressure and mass exchange, the stability to viscous sublayer and liquid film damages, enhanced heat exchange；
4) for the fluid of non-azeotrope multicomponent mixture, can realize expanding gas-liquid interface and gas phase by " aculea "
The contact area of boundary layer and cooling wall simultaneously strengthens disturbance；
5) easy processing realizes that manufacture difficulty and cost will not substantially rise；
6) by substantial amounts of experiment, it is determined that the physical dimension of optimal plate-fin heat exchanger；
7) it is H by designing the distance of adjacent plate, the length on isosceles triangle base is h, adjacent sloping portion
Distance be w, the drift angle of isosceles triangle is b, and the bearing of trend of the bur is a etc. with the angle of the flow direction of mixture
Parameter improves heat exchange efficiency or reduces Fluid pressure along the change of fluid flow direction.
8) solve the problems, such as that the heat exchange efficiency containing on-condensible gas is low, greatly saved the energy.
Brief description of the drawings
Fig. 1 is a kind of plate-fin heat exchanger heat exchange plate structural representation of the invention；
Fig. 2 is a structural representation for plate wing unit of the invention；
Fig. 3 is the schematic diagram that the present invention sets bur structure vertical part planar；
Fig. 4 is another schematic diagram that the present invention sets bur structure vertical part planar；
Fig. 5 is triangle bur structural representation of the invention；
Fig. 6 is the tangent plane structural representation in triangle bur runner of the present invention；
The structural representation that Fig. 7 burs of the present invention extend to vertical component both sides；
Fig. 8 vertical components bur, hole are to pressure and the influence schematic diagram of mass exchange.
Reference is as follows：
1 seal, 2 fluid passages, 3 plates, 4 vertical components, 5 horizontal components, 6 burs, 7 fins.
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with the accompanying drawings.
Herein, if without specified otherwise, being related to formula, "/" represents division, and "×", " * " represent multiplication.
As shown in figure 1, a kind of plate-fin heat exchanger for the condensation of non-azeotrope multicomponent mixture, the plate fin heat-exchanging
Device includes plate 3 parallel to each other, and fluid passage 2 is formed between the adjacent plate 3, is set between the adjacent plate 3
Put fin 7.The fin 7 include vertically with the vertical component 4 of plate 3, bur is processed by impact style on vertical component 4
6, so that the fluid of the both sides of vertical component 4 is connected by the hole formed by impact style on vertical component 4；The bur 6
Stretch out from vertical component 4.
By setting bur 6, have the following advantages：
1) laminar sublayer on the one hand can be destroyed, on the other hand compared with " punching " fin, not because of punching loss heat-transfer surface
Product, and " thorn " and " hole " can disturb fluid on different height respectively, strengthen different thermal resistance links；
2) aperture that punching press " aculea " is formed, by the influence of " aculea " downstream pressure, is capable of achieving fin media of both sides
Pressure and mass exchange, the stability to viscous sublayer and liquid film damages, and enhanced heat exchange is shown in Fig. 8
3) for the fluid of non-azeotrope multicomponent mixture, can realize expanding gas-liquid interface and gas phase by " aculea "
The contact area of boundary layer and cooling wall simultaneously strengthens disturbance；
4) easy processing realizes that manufacture difficulty and cost will not substantially rise.
Above-mentioned measure is taken in plate-fin heat exchanger, the letter of non-azeotrope blending agent condensing heat-exchange can greatly be improve
Easy and effective technology.Compared with " punching " fin is taken, it is possible to increase the heat exchange efficiency of 20-30%.
Preferably, the angle that described bur 6 is formed with the flow direction of mixture is acute angle, as shown in Figure 8.
Preferably, as shown in Fig. 2 described fin 7 be perpendicular type fin, the fin 7 include horizontal component 5 and hang down
Straight part 4, the horizontal component 5 is parallel with plate 3 and is sticked together with plate 3, the vertical component 4 and horizontal component 5
Connect and dispose mutually.
As shown in fig. 6, the bearing of trend of the bur 6 is a with the angle of the flow direction of mixture, as shown in figure 3, edge
The flow direction of mixture, same vertical component 4 sets multiple burs 6, along the flow direction of mixture, described folder
Angle a is increasing.
It is found through experiments that, by becoming larger for angle a, compared with angle a is identical, it is possible to achieve higher changes
The thermal efficiency, can about improve 10% or so heat exchange efficiency.
Preferably, along the flow direction of mixture, the amplitude that angle a becomes big is less and less.It is found through experiments that, becomes
Change the big amplitude of the change of angle a, it is ensured that in the case of heat exchange efficiency, further reduce flow resistance, can about reduce
5% or so flow resistance.
Preferably, the length that the bur 6 extends is L, along the flow direction of mixture, same vertical component 4
Multiple burs 6 are set, and along the flow direction of mixture, described length L is increasing.It is found through experiments that, by length L
Become larger, compared with length L is identical, it is possible to achieve heat exchange efficiency higher, can about improve 9% or so and change
The thermal efficiency.
Preferably, along the flow direction of mixture, the amplitude that length L becomes big is less and less.It is found through experiments that, it is long
The amplitude that the change of degree L is big is less and less, it is ensured that in the case of heat exchange efficiency, further reduce flow resistance, can be about
Reduce by 5% or so flow resistance.
Preferably, the bur 6 is isosceles triangle, the base of the isosceles triangle is arranged on vertical component 4,
And perpendicular to plate 3, the drift angle of the isosceles triangle is b, along the flow direction of mixture, same vertical component 4
Multiple burs 6 are set, along the flow direction of mixture, in the case where base length keeps constant, described bur drift angle b
It is less and less.It is found through experiments that, by tapering into for bur drift angle b, compared with drift angle b is identical, it is possible to achieve more
Heat exchange efficiency high, can about improve 8% or so heat exchange efficiency.
Preferably, along the flow direction of mixture, the amplitude that drift angle b diminishes is less and less.It is found through experiments that, pushes up
The amplitude that angle b diminishes is less and less, it is ensured that in the case of heat exchange efficiency, further reduces flow resistance, can about drop
Low 4% or so flow resistance.
Preferably, the bur 6 is isosceles triangle, the base of the isosceles triangle is arranged on vertical component,
And perpendicular to plate, the base length of the isosceles triangle is h, along the flow direction of mixture, same vertical component effect
Divide 4 multiple burs 6 are set, along the flow direction of mixture, same vertical component 4 sets multiple burs, is kept in drift angle
In the case of constant, along the flow direction of mixture, described h is increasing.It is found through experiments that, by the gradually change of h
Greatly, compared with h is identical, it is possible to achieve heat exchange efficiency higher, 7% or so heat exchange efficiency can about be improved.
Preferably, along the flow direction of mixture, the amplitude that h becomes big is less and less.It is found through experiments that, h becomes big
Amplitude it is less and less, it is ensured that in the case of heat exchange efficiency, further reduce flow resistance, can about reduce by 5% left
Right flow resistance.
Preferably, along the flow direction of fluid, same vertical component sets multiple rows of bur 6, as shown in Figures 3 and 4, often
The distance between row's bur is S2, and along the flow direction of mixture, described S2 is increasing.Why it is arranged such, it is main
Syllabus be it is big by the change of S2, realize, in the case where heat exchange efficiency is ensured, further reducing flow resistance.Sent out by testing
It is existing, flow resistance reduction by 10% or so.
The S2 be with the base of the bur of adjacent row be calculate distance.
Preferably, as shown in figure 4, multiple rows of bur 6 is shifted structure.
Find in an experiment, the distance of adjacent plate 3 can not be excessive, crossing conference causes the reduction of heat exchange efficiency, too small meeting
Cause flow resistance excessive, similarly, base length, drift angle, bur, the distance of fin vertical component for isosceles triangle with
The angle of fluid flow direction all can not be excessive or too small, excessive or too small can all cause the reduction or flowing of heat exchange efficiency
The change of resistance is big, therefore distance, the base length of isosceles triangle, drift angle, bur, fin vertical component in adjacent plate 3
A size relationship for optimization is met and the angle of fluid flow direction between.
Therefore, the present invention be by the thousands of numerical simulations and test data of multiple various sizes of heat exchangers,
Meet in the case of industrial requirements pressure-bearing (below 10MPa), in the case where maximum heat exchange amount is realized, the optimal heat exchange for summing up
The dimensionally-optimised relation of plate.
The distance of adjacent plate is H (i.e. the height of vertical component is also H), and the length on isosceles triangle base is h, phase
The distance of adjacent vertical component is w,
7*h/H=c1*Ln (L*sin (a)/w)+c2,
Sin (b/2)=c3+c4*sin (a)-c5* (sin (a))2,
Wherein Ln is logarithmic function, and c1, c2, c3, c4, c5 are coefficients,
0.24<c1<0.25,0.68<c2<0.70,0.87<c3<0.88,0.68<c4<0.70,1.14<c5<1.15；
19°<a<71 °, 55 °<b<165°；
10mm<w<15mm, 6mm<H<14mm；
0.19<L*sin(a)/w<0.41,0.29<7*h/H<0.47；
H is that, with the distance between relative face of adjacent plate, W is that, with the distance in the relative face of adjacent vertical component, L is
Distance of the summit of isosceles triangle to base midpoint；
Preferably, c1=0.2461, c2=0.691；
C3=0.875, C4=0,6987, C5=1.1439.
By the optimal geometric scale of " bur " that goes out of above-mentioned formula, heat exchange efficiency can be improved, while can be real
Now only to viscous sublayer or comprising liquid film and the extremely reinforcing comprising gas phase boundary different scale internal thermal resistance, it is to avoid measure
Degree, causes unnecessary drag losses.
Preferably, the base of the adjacent bur of described same row is all on one wire, the adjacent bur of same row
Distance is S1, the 4 × h<S1<6 × h, wherein S1 are with the distance at the midpoint on the base of two neighboring isosceles triangle bur.
Preferably, the base of the isosceles triangle of the bur of adjacent row is parallel to each other, the summit of isosceles triangle is on earth
The distance at side midpoint be L, adjacent row apart from S2 be 4*L<S2<7*L.Preferably S2=5*L
When the base of the isosceles triangle of adjacent row is different, two weighted average on base are taken to calculate.
Preferably, the angle of the isosceles triangle of same row is identical with base.I.e. shape is identical, is equal
Shape.
For formula above, the bur different for front and rear row size is also still applicable.
For the specific dimensional parameters do not mentioned, it is designed according to normal heat exchanger.
Preferably, as shown in fig. 7, set multiple burs 6 on vertical component, not homonymy from the bur to vertical component
Extend
Preferably, same vertical component sets multiple rows of bur, at least row's bur is with other row's burs to rake
The extension side divided is different.
Preferably, adjacent often row's bur extends to the not homonymy of vertical component.
By being arranged such, can cause that fluid replaces heat exchanging tampering in the passage of vertical component both sides, further carry
Heat exchange efficiency high.Compared with the same side, it is possible to increase 8% or so.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any art technology
Personnel, without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should
It is defined when by claim limited range.
Claims (3)
1. a kind of right angle plate fin for the condensation of non-azeotrope multicomponent mixture, the fin includes horizontal component and vertical
Part, the vertical component is connected and orthogonal with horizontal component, it is characterised in that pass through impact style on vertical component
Processing bur, so that the fluid of vertical component both sides is connected by the hole that impact style on vertical component is formed；The bur
Stretch out from vertical component；
The length that the bur extends is L, and along the flow direction of mixture, same vertical component sets multiple burs, edge
The flow direction of mixture, described length L is increasing.
2. right angle plate fin as claimed in claim 1, it is characterised in that along the flow direction of mixture, length L becomes big
Amplitude it is less and less.
3. a kind of one of plate type heat exchanger, including claim 1-2 described fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510658681.5A CN105157465B (en) | 2015-10-12 | 2015-10-12 | A kind of right angle plate fin that bur is set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510658681.5A CN105157465B (en) | 2015-10-12 | 2015-10-12 | A kind of right angle plate fin that bur is set |
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| Publication Number | Publication Date |
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| CN105157465A CN105157465A (en) | 2015-12-16 |
| CN105157465B true CN105157465B (en) | 2017-06-16 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3265127A (en) * | 1963-10-21 | 1966-08-09 | Ford Motor Co | Heat exchange element |
| JP3744432B2 (en) * | 2002-02-06 | 2006-02-08 | 株式会社デンソー | Exhaust heat exchanger |
| JP3784735B2 (en) * | 2002-03-07 | 2006-06-14 | カルソニックカンセイ株式会社 | Louver fin |
| US20070012430A1 (en) * | 2005-07-18 | 2007-01-18 | Duke Brian E | Heat exchangers with corrugated heat exchange elements of improved strength |
| US7913750B2 (en) * | 2008-01-09 | 2011-03-29 | Delphi Technologies, Inc. | Louvered air center with vortex generating extensions for compact heat exchanger |
| EP2478318A4 (en) * | 2009-09-16 | 2014-05-28 | Carrier Corp | Free-draining finned surface architecture for a heat exchanger |
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