CN108332597A - A kind of air setting flue gas heat and mass transfer enhancement element and its heat exchanger - Google Patents
A kind of air setting flue gas heat and mass transfer enhancement element and its heat exchanger Download PDFInfo
- Publication number
- CN108332597A CN108332597A CN201810211209.0A CN201810211209A CN108332597A CN 108332597 A CN108332597 A CN 108332597A CN 201810211209 A CN201810211209 A CN 201810211209A CN 108332597 A CN108332597 A CN 108332597A
- Authority
- CN
- China
- Prior art keywords
- fin
- flue gas
- base tube
- heat
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012546 transfer Methods 0.000 title claims abstract description 56
- 239000003546 flue gas Substances 0.000 title claims abstract description 54
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000005260 corrosion Methods 0.000 claims abstract description 21
- 230000007797 corrosion Effects 0.000 claims abstract description 21
- 238000005266 casting Methods 0.000 claims abstract description 20
- 210000003371 toe Anatomy 0.000 claims abstract description 14
- 210000003734 kidney Anatomy 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000006096 absorbing agent Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000003628 erosive effect Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 9
- 239000003517 fume Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 238000009827 uniform distribution Methods 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 210000003298 dental enamel Anatomy 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000013517 stratification Methods 0.000 claims description 3
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 claims description 2
- 229910001018 Cast iron Inorganic materials 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- OGSYQYXYGXIQFH-UHFFFAOYSA-N chromium molybdenum nickel Chemical compound [Cr].[Ni].[Mo] OGSYQYXYGXIQFH-UHFFFAOYSA-N 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001182 Mo alloy Inorganic materials 0.000 claims 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 6
- 238000006477 desulfuration reaction Methods 0.000 abstract description 2
- 230000023556 desulfurization Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 25
- 238000000034 method Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 241001365789 Oenanthe crocata Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- MXWHMTNPTTVWDM-NXOFHUPFSA-N mitoguazone Chemical compound NC(N)=N\N=C(/C)\C=N\N=C(N)N MXWHMTNPTTVWDM-NXOFHUPFSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
- F28F1/422—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 with outside means integral with the tubular element and inside means integral with the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
Abstract
A kind of efficient heat and mass transfer enhancement element of air setting flue gas and its heat exchanger belong to de- white, the energy conservation and environmental protection field of flue gas dehumidifying in boiler flue gas desulfurization system, which includes base tube portion, fin part, square toes portion；Base tube designs for oval type section；Outer transverse fin is in kidney ellipsoid or extends up and down rectangular, while the outer wing of fin needle wing formula can also be used；Interior longitudinal fin is that axial symmetry comb teeth-shaped inner fin or interior wing plate structure are equidistantly arranged in non-segmental arc pipe；Square toes portion is the not wide square groove design of twice, and filling heat-proof corrosion resistant erosion sealing element causes short circuit to prevent flue gas and air from contacting with each other；Using being embedded in square groove oval type bolt connecting hole, the thermal expansion difference between absorber element and main body case；Element uses integral casting process, according to each position heat exchange in gas cooler best corrosion resistant material is selected with corrosion condition, ensure that gas cooler has best corrosion resistance and minimum fabrication cost, it is final to realize de- white and deep removal flue gas pollutant the double goal of air setting flue gas.
Description
Technical field
The invention belongs to de- white, the energy conservation and environmental protection fields of flue gas dehumidifying in boiler flue gas desulfurization system, and in particular to Yi Zhongkong
Flue gas heat and mass transfer enhancement element and its heat exchanger are coagulated in air cooling.
Background technology
Wet desulphurization is at present frequently with spray washing technique, and while removing sulfur dioxide, a large amount of shower waters are gasified
It brings into flue gas, and flue gas, by spray water cooling, temperature is down to about 50 ± 5 DEG C, approximate with the aqueous dew point temperature of flue gas.Temperature
Reduction institute's containing water vapor supersaturation can be made to condense to form white plume in flue gas.With pushing away for national minimum discharge transformation
Into most of power plant's wet desulphurization device cancels former flue gas-smoke re-heater (GGH) and turns to fill low low-temperature flue gas processing system
(MGGH) etc. partitions heating device, makes flue gas reheat to 70~80 DEG C or so, but according to actual observation, and environment temperature is less than 15 DEG C
It when left and right, still will appear " wet plume " phenomenon.
It is newest research shows that the harm of white plume is many：First, in the past 10 years, Air Pollutant Discharge reduces
80% or more, but haze problem is more serious.Comprehensive introducing of power industry wet desulphurization results in boiler exhaust gas water content
With sharply increasing for dissolved particles object, vapor in air, sulfate and nitrate aerosol particle object content is caused to rise, at
The major reason generated for haze.Secondly white plume can cause " Wet chimney ", corrode desulfurizing tower rear pass and chimney, and work as
When desulfurizer mist eliminator demisting efficiency reduces, " gypsum rain " phenomenon there is also.It is steamed simultaneously containing a large amount of water in white plume
Gas causes the waste of water resource.If being subject to condensing recovery, the water shortage problem in North China the Northwest thermal power plant can be solved, is saved
About valuable water resource.The ground such as Shanghai, Zhejiang, Handan, Tianjin launch respectively region plume and administer new rule, and flue gas takes off white weight
Degree is wanted to have some idea of.
Gas cooler is that flue gas takes off white key equipment, air setting mode can be used to save water resource, but at present
Flue gas disappears, and the universal fin efficiency of white used air setting formula heat and mass element is relatively low, and inner fin tip portion is in heat transfer process
In can have low temperature concentrated area, reduce heat transfer coefficient, cannot achieve the homogenization in the temperature field of main flow area.Existing spiral shell
The tubular types heat and mass ability such as line, fin substantially symmetrical about its central axis, needle wing is undesirable, short of food before the new harvest in structure design, not with now
Gas Parameters integrate in power plant's operation.
Invention content
It is above-mentioned using air setting in order to solve, it is low to save heat and mass element fin efficiency in the gas cooler of water resource
Under, inner fin tip portion can have low temperature concentrated area in heat transfer process, cannot achieve the uniform of the temperature field of main flow area
The problem of change, Gas Parameters integrate with during component structure design is not run with existing power plant, the present invention provides a kind of air setting cigarette
Gas heat and mass transfer enhancement element and its heat exchanger.
The present invention is achieved by the following technical programs.
A kind of air setting flue gas heat and mass transfer enhancement element, including base tube portion, fin part, square toes portion, the base tube portion
For the base tube 1 in oval type section；The fin part includes several parallel outer transverse fins 2 and base being distributed in outside 1 pipe of base tube
Interior longitudinal fin 3 in 1 pipe of pipe；The square toes portion is arranged in 1 both ends of base tube, including square groove 4 and bolt connecting hole 5；It is described
It is fume side or air side that base tube 1, which is managed outer, is air side or fume side in pipe, and thickness is 8~10mm, calculated according to heat exchange and
Corrosion prediction determines.
1 outer wall of the base tube be uniform-distribution with etc. wing heights in kidney ellipsoid or extend rectangular outer lateral wing up and down
Piece 2, the outer transverse fin 2 of 18~n roots press the arrangement of certain spacing rule, outer transverse fin 2 inned coefficient height, and outside base tube 1
It is 3~6mm that wall, which has smoothly transitting for 2~5mm curvings of castings, fin width, and fin height is 25~40mm；Incoming flue gas is parallel
Just external transverse fin 2 reduces flow resistance, reduces dust stratification, improves heat exchange；
Or be uniform-distribution on the 1 outer wall arc pipeline section of base tube with improve thermal coefficient and diversion function etc. wing heights
In kidney ellipsoid by the outer transverse fin 2 of the arrangement of certain spacing rule, there is the light of 2~5mm curvings of castings with 1 outer wall of base tube
It slips over and crosses, fin width is 3~6mm, and fin height is 25~40mm；It is dispersed on the non-arc pipeline section of 1 outer wall of the base tube
Wing height or the wing heights such as not, up-thin-low-thick pin or pin convenient for casting, also referred to as aciculiform fin, uniform stagger arrangement or in-line or stagger arrangement
In-line is distributed in 1 non-arc pipeline section of base tube, and aciculiform fin section is rounded, rectangular, diamond shape, kidney ellipsoid or ellipse, single
Or multiple section combines so that having both and improves thermal coefficient and the effect of condensate liquid water conservancy diversion, any orientation in section can meet to
Incoming, it is 6~12mm that aciculiform fin has 2~5mm curving of castings transition, equivalent diameter with 1 outer wall of base tube, highly 25~
40mm, the transverse fin in the maximum height and arc pipeline section of aciculiform fin are equal.
When the interior longitudinal fin 3 is axial symmetry comb teeth-shaped inner fin structure, interior longitudinal fin 3 uses 9~15 pairs of fins
It is distributed in 1 non-arc pipeline section of base tube at equal intervals, has smoothly transitting for 2~5mm fillets, symmetrical fin top with 1 inner wall of base tube
Spacing is 2mm~20mm, and the fin top band curving of castings, fin width is 3~6mm.
When the interior longitudinal fin 3 is using interior wing plate structure, interior longitudinal fin 3 is equidistant using wing plate in 9~15 pairs
Be distributed in 1 non-arc pipeline section of base tube, have smoothly transitting for 2~5mm fillets with 1 inner wall of base tube, opened on interior wing plate axis it is long by 100~
200mm, wide 6~20mm ovals type hole, interior wing plate width are 3~6mm.
The outer transverse fin 2 and interior longitudinal fin 3 and 1 wall surface of base tube are handled using external waviness, and corrugated form is saw
Tooth form, rectangle or SIN function waveform increase the heat exchange area of fin and wall surface and significantly enhance flow disturbance, improve and pass
Thermal effect can select suitable corrugated shape in specific make according to cost of manufacture, heat exchange efficiency and Working fluid flow situation.
The square groove 4 is provided with twice slot, respectively first of square groove 4-1 and second square groove 4-2, first of side
Shape slot 4-1 and second square groove 4-2 is respectively away from square toes end 5mm and 42mm, first of square groove 4-1 wide 22mm, second
Square groove 4-2 wide 10mm, the two depth are 5mm, and filling heat-proof corrosion resistant loses sealing element to prevent flue gas from contacting with each other with air
Cause short circuit.
The bolt connecting hole 5 is oval type, thermal expansion difference while connecting element between absorber element and main body case,
The 5 symmetrical trepanning of bolt connecting hole of oval type is in the long side in square toes portion, first of square groove 4-1, long 16mm, wide 8mm, together
The spacing of side bolt connecting hole 5 is 100~140mm.
The heat and mass transfer enhancement element uses integral casting process, using acid corrosion-resistant material, selects cast iron, cast aluminium silicon
Alloy, casting 316L austenitic stainless steels, 317L austenitic stainless steels, 2205/2507/2707 two phase stainless steel, high chromium nickel molybdenum close
Gold or plastics；The element flue gas side wall surface uses enamel spraying technology, makes that element flue gas side wall surface is corrosion-resistant, abrasion resistance properties
It improves, surface smoothness improves, accumulatingdust；It is determined with corrosion condition according to each position heat exchange in heat exchanger, to ensure heat exchanger
Interior each section corrosion resistance is best and manufacturing cost is minimum.
The both sides square groove of the heat and mass transfer enhancement element is respectively embedded into two pieces of segmentation tube sheets and constitutes interior longitudinal fin 3
Channel is imported and exported, the both sides of two pieces of tube sheets are mutually coupled respectively the inlet and outlet channel for constituting outer transverse fin 2, two wing passages difference
It connects flue gas and air composition flue gas condensing heat exchanger realizes that air setting flue gas takes off white target.
A kind of heat exchanger, including multiple air setting flue gas heat and mass transfer enhancement elements for being arranged in shell.
Compared with prior art, the invention has the advantages that：
The present invention reduces pitch between fin by increasing number of fins, the wing heights such as design in kidney ellipsoid or prolonging up and down
Be stretched into rectangle or the outer transverse fin 2 of needle wing formula to increase fume side heat exchange coefficient, achieve the purpose that enhanced heat exchange；
The present invention uses axial symmetry comb teeth-shaped inner fin structure or interior wing plate structure, can effectively optimize inner air tube radial direction
Temperature gradient so as to improve the heat transfer effect of centre idler heat transfer zone in pipe, realize the uniform maximum of air side interface temperature field
Change, further increases the coefficient of heat transfer；
The present invention uses casting technique, can specifically be used according to each portion's corrosion condition in gas cooler corresponding best resistance to
Corrode steel, ensures that each section corrosion resistance is best in gas cooler and manufacturing cost is minimum.
Enamel spraying technology can also can be used in element flue gas side wall surface in the present invention, make element flue gas side wall surface it is corrosion-resistant,
Abrasion resistance properties improve, and surface smoothness improves accumulatingdust.
External waviness processing can be used in fin and wall surface in the present invention, and corrugated form is zigzag, rectangle or SIN function
Waveform etc. increases the heat exchange area of fin and wall surface and significantly enhances flow disturbance, improves heat-transfer effect, specifically making
When can be according to cost of manufacture, heat exchange efficiency and Working fluid flow situation select suitable corrugated shape.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of the air-cooled heat transfer element of axial symmetry comb teeth-shaped inner fin.
Fig. 2 is the three-view diagram of the air-cooled heat transfer element of axial symmetry comb teeth-shaped inner fin, and wherein Fig. 2 a are front view, and Fig. 2 b are
Side view, Fig. 2 c are vertical view.
Fig. 3 is the stereoscopic schematic diagram of the air-cooled heat transfer element of rectangular section transverse fin.
Fig. 4 is the three-view diagram of the air-cooled heat transfer element of rectangular section transverse fin, and wherein Fig. 4 a are front view, and Fig. 4 b are side view
Figure, Fig. 4 c are vertical view.
Fig. 5 is the stereoscopic schematic diagram of in-line fin-air-cooled heat transfer element of needle wing formula.
Fig. 6 is the three-view diagram of in-line fin-air-cooled heat transfer element of needle wing formula, and wherein Fig. 6 a are front view, and Fig. 6 b are side view
Figure, Fig. 6 c are vertical view.
Fig. 7 is the stereoscopic schematic diagram of stagger arrangement fin-air-cooled heat transfer element of needle wing formula.
Fig. 8 is various needle wing schematic shapes.
Fig. 9 is the air-cooled heat transfer element schematic diagram of combined fin-needle wing formula.
Figure 10 is the stereoscopic schematic diagram of the air-cooled heat transfer element of interior wing plate.
Figure 11 is the three-view diagram of the air-cooled heat transfer element of interior wing plate, and wherein Figure 11 a are front view, and Figure 11 b are side view, figure
11c is vertical view.
Figure 12 is to manage inside and outside fin and wall surface longitudinal ripple schematic diagram.
Figure 13 is the transverse wave schematic diagram of longitudinal fin in pipe.
Figure 14 is heat exchanger schematic diagram.
Specific implementation mode
The present invention is described in further detail in the following with reference to the drawings and specific embodiments：
Case study on implementation one
Fig. 1 is the stereoscopic schematic diagram of the air-cooled heat transfer element of axial symmetry comb teeth-shaped inner fin.
Fig. 2 is the three-view diagram of the air-cooled heat transfer element of axial symmetry comb teeth-shaped inner fin.
Figure 12 is to manage inside and outside fin and wall surface longitudinal ripple schematic diagram.
Figure 13 is the transverse wave schematic diagram of longitudinal fin in pipe.
The structure includes base tube portion, fin part, square toes portion, and the base tube portion is the base tube 1 in oval type section；It is described
Fin part includes the interior longitudinal fin 3 being distributed in several parallel outer transverse fins 2 and pipe outside pipe；The square toes portion includes
Square groove 4 and bolt connecting hole 5.
It is fume side that the base tube 1, which is managed outer, is air side in pipe, and 1 thickness of base tube is 8~10mm, calculated according to heat exchange and
Corrosion prediction determines.
The outer transverse fin 2 being evenly distributed on outside base tube portion pipe for wing heights such as references with base tube 1, and as preferred
The outer transverse fin 2 of 18~n roots press the arrangement of certain spacing rule, 2 inned coefficient of outer transverse fin is very high, and outside base tube 1
It is 3~6mm that wall, which has smoothly transitting for 2~5mm fillets, width, and the parallel just external transverse fin 2 of incoming flue gas reduces flowing resistance
Power reduces dust stratification, improves heat exchange.
The interior longitudinal fin 3 is axial symmetry comb teeth-shaped inner fin structure, and it is symmetrical to be different from any radial center
Wing type heat exchange element structure, from the point of view of the perturbation action to flowing, any radial wing type structure all cannot achieve mainstream
The homogenization in the temperature field in area can have high and low temperature concentrated area, reduce heat transfer coefficient.In single-phase heat transfer process, axis
Several heat exchange areas has been divided in the interior wing design of symmetrical comb teeth-shaped, by the temperature gradient for effectively optimizing intraductal working medium radial direction
So as to improve the heat transfer effect of centre idler heat transfer zone in pipe, the uniform maximization of interface temperature field is realized；Interior longitudinal fin 3 is excellent
9~15 pairs of fins of use of choosing are distributed in 1 non-arc pipeline section of base tube at equal intervals, have the smooth of 2~5mm fillets with 1 inner wall of base tube
Transition, symmetrical fin top spacing are 2mm~20mm, and the fin top band curving of castings, fin width is 3~6mm.
As shown in figure 12, the processing of surface longitudinal ripple, corrugated form can be used in the inside and outside fin of the pipe of the element and wall surface
It manages interior longitudinal fin as shown in Figure 13 for zigzag, rectangle or SIN function waveform etc. and transverse wave processing can be used, increase
The heat exchange area of big fin and wall surface and flow disturbance is significantly enhanced, improves heat-transfer effect, it can basis in specific make
Cost of manufacture, heat exchange efficiency and Working fluid flow situation select suitable corrugated shape.
The square groove 4 is preferably provided with twice slot, respectively first of square groove 4-1 and second square groove 4-2, the
One of square groove 4-1 and second square groove 4-2 is respectively away from square toes end 5mm and 42mm, first of square groove 4-1 wide 22mm
Two square groove 4-2 wide 10mm, the two depth is 5mm, filling heat-proof corrosion resistant erosion sealing element such as asbestos cord with prevent flue gas with
Air, which contacts with each other, causes short circuit.
The bolt connecting hole 5 is oval type, thermal expansion difference while connecting element between absorber element and main body case,
85 symmetrical trepannings of oval type bolt connecting hole are in the long side in square toes portion, first of square groove 4-1, long 16mm wide 8mm, together
The symmetrical 5 100~140mm of spacing of bolt connecting hole in side.
Case study on implementation two
Fig. 3 is the stereoscopic schematic diagram of the air-cooled heat transfer element of rectangular section transverse fin.
Fig. 4 is the three-view diagram of the air-cooled heat transfer element of rectangular section transverse fin.
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
The outer transverse fin 2, which is evenly distributed on outside base tube portion pipe and extends up and down, makes rectangular in cross-section.
Case study on implementation three
Fig. 5 is the stereoscopic schematic diagram of in-line fin-air-cooled heat transfer element of needle wing formula.
Fig. 6 is the three-view diagram of in-line fin-air-cooled heat transfer element of needle wing formula.
Fig. 7 is the stereoscopic schematic diagram of stagger arrangement fin-air-cooled heat transfer element of needle wing formula.
Fig. 8 is various needle wing schematic shapes.
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
As shown in Figure 5, Figure 6, it is uniform-distribution on 1 outer wall arc pipeline section of the base tube with raising thermal coefficient and water conservancy diversion work(
Can etc. wing heights in kidney ellipsoid by certain spacing rule arrangement outer transverse fin 2, with 1 outer wall of base tube have 2~5mm cast
Round-corner transition is made, fin width is 3~6mm, and fin height is 25~40mm；As shown in Figure 5, Figure 7, the base tube 1 outer wall
The wing heights or the wing heights such as or not it is dispersed on non-arc pipeline section, up-thin-low-thick pin or pin convenient for casting, also referred to as aciculiform fin,
Even stagger arrangement or in-line or stagger arrangement in-line are distributed in 1 non-arc pipeline section of base tube, as shown in figure 8, aciculiform fin section is rounded, side
Shape, diamond shape, kidney ellipsoid, ellipse etc. are variously-shaped, and any orientation in section can be met to incoming, aciculiform fin and base tube
It is 6~12mm, 25~40mm of height, the maximum height and arc pipe of needle wing that 1 outer wall, which has 2~5mm curving of castings transition, equivalent diameter,
Transverse fin in section is equal.
Case study on implementation four
Fig. 9 is the air-cooled heat transfer element schematic diagram of combined fin-needle wing formula.
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
In heat exchanger entrance, since flue-gas temperature is high, humidity is big, thus it is better using combination needle wing, such as Fig. 9 institutes
Show, between 2~6 mining kidney ellipsoid of beginning of flue gas inflow direction, ellipse are pressed centainly on 1 outer wall non-arc pipeline section of the base tube
The aciculiform fin of arrangement away from rule, can increase heat exchange area windward, remaining aciculiform fin is used using shapes such as rectangular, diamond shapes
To the drop water conservancy diversion condensed out in flue gas while to improve the coefficient of heat transfer.
Case study on implementation five
Figure 10 is the stereoscopic schematic diagram of the air-cooled heat transfer element of interior wing plate.
Figure 11 is the three-view diagram of the air-cooled heat transfer element of interior wing plate.
In the present embodiment, for structure identical with case study on implementation one, identical symbol is given, and omits identical theory
It is bright.
The interior longitudinal fin 3 be interior wing plate structure, ensure effectively optimization inner air tube radial direction temperature gradient from
And improve the heat transfer effect of centre idler heat transfer zone in pipe, realize that the uniform of interface temperature field maximumlly makes interior fin structure simultaneously
More stable strong, casting technique are eased；Longitudinal fin 3 is preferably distributed in using wing plate in 9~15 pairs at equal intervals
1 non-arc pipeline section of base tube has smoothly transitting for 2~5mm fillets with 1 inner wall of base tube, and long 100~200mm, width are opened on interior wing plate axis
6~20mm oval type holes, interior wing plate width are 3~6mm.
As shown in figure 14, a kind of heat exchanger of the present invention, including multiple air setting flue gases for being arranged in shell
Heat and mass transfer enhancement element.
Claims (10)
1. a kind of air setting flue gas heat and mass transfer enhancement element, it is characterised in that：Including base tube portion, fin part, square toes portion, institute
State the base tube (1) that base tube portion is oval type section；The fin part includes several parallel outer cross being distributed in outside base tube (1) pipe
Interior longitudinal fin (3) into fin (2) and base tube (1) pipe；The square toes portion is arranged in base tube (1) both ends, including square groove
(4) and bolt connecting hole (5)；Outer base tube (1) pipe is fume side or air side, is air side or fume side, thickness in pipe
For 8~10mm, is calculated according to heat exchange and corrosion prediction determines.
2. a kind of air setting flue gas heat and mass transfer enhancement element according to claim 1, it is characterised in that：The base tube
(1) outer wall be uniform-distribution with etc. wing heights in kidney ellipsoid or extend rectangular outer transverse fin (2), 18~n roots up and down
Outer transverse fin (2) presses the arrangement of certain spacing rule, and outer transverse fin (2) inned coefficient is high, has 2 with base tube (1) outer wall
~5mm the curvings of castings smoothly transit, and fin width is 3~6mm, and fin height is 25~40mm；The parallel face of incoming flue gas
Outer transverse fin (2) reduces flow resistance, reduces dust stratification, improves heat exchange；Or uniformly divide on base tube (1) the outer wall arc pipeline section
Cloth with improve thermal coefficient and diversion function etc. wing heights the outer cross in kidney ellipsoid by the arrangement of certain spacing rule
To fin (2), it is 3~6mm to have smoothly transitting for 2~5mm curvings of castings, fin width with base tube (1) outer wall, and fin height is
25~40mm；The wing heights or the wing heights such as or not it is dispersed on the non-arc pipeline section of base tube (1) outer wall, it is up-thin-low-thick convenient for casting
Pin or pin, also referred to as aciculiform fin, uniform stagger arrangement or in-line or stagger arrangement in-line are distributed in base tube (1) non-arc pipeline section, needle
Shape fin section is rounded, rectangular, diamond shape, kidney ellipsoid or ellipse, single or multiple section combine so that having both raising heat conduction
Any orientation of the effect of coefficient and condensate liquid water conservancy diversion, section can be met to incoming, and aciculiform fin has with base tube (1) outer wall
2~5mm curving of castings transition, equivalent diameter are 6~12mm, 25~40mm of height, the maximum height and arc pipeline section of aciculiform fin
On transverse fin it is equal.
3. a kind of air setting flue gas heat and mass transfer enhancement element according to claim 1, it is characterised in that：It is described interior vertical
To fin (3) be axial symmetry comb teeth-shaped inner fin structure when, interior longitudinal fin (3) is distributed at equal intervals using 9~15 pairs of fins
In base tube (1) non-arc pipeline section, it is 2mm to have smoothly transitting for 2~5mm fillets, symmetrical fin top spacing with base tube (1) inner wall
~20mm, the fin top band curving of castings, fin width is 3~6mm.
4. a kind of air setting flue gas heat and mass transfer enhancement element according to claim 1, it is characterised in that：It is described interior vertical
When to fin (3) using interior wing plate structure, it is non-that interior longitudinal fin (3) using wing plate in 9~15 pairs is distributed in base tube 1 at equal intervals
Arc pipeline section has smoothly transitting for 2~5mm fillets with base tube (1) inner wall, opened on interior wing plate axis long 100~200mm, it is wide by 6~
20mm oval type holes, interior wing plate width are 3~6mm.
5. a kind of air setting flue gas heat and mass transfer enhancement element according to claim 1, it is characterised in that：The outer cross
Handled to fin (2) and interior longitudinal fin (3) and base tube (1) wall surface using external waviness, corrugated form be zigzag, rectangle or
SIN function waveform increases the heat exchange area of fin and wall surface and significantly enhances flow disturbance, improves heat-transfer effect, having
System can select suitable corrugated shape when making according to cost of manufacture, heat exchange efficiency and Working fluid flow situation.
6. a kind of air setting flue gas heat and mass transfer enhancement element according to claim 1, it is characterised in that：It is described rectangular
Slot (4) is provided with twice slot, respectively first of square groove (4-1) and second square groove (4-2), first of square groove (4-1)
With second square groove (4-2) respectively away from square toes end 5mm and 42mm, first of square groove (4-1) width 22mm, second is rectangular
Slot (4-2) width 10mm, the two depth is 5mm, and filling heat-proof corrosion resistant erosion sealing element is made with preventing flue gas from contacting with each other with air
At short circuit.
7. a kind of air setting flue gas heat and mass transfer enhancement element according to claim 6, it is characterised in that：The bolt
Connecting hole (5) is oval type, thermal expansion difference while connecting element between absorber element and main body case, and the bolt of oval type connects
The symmetrical trepanning in hole (5) is connect in the long side in square toes portion, first of square groove (4-1), long 16mm, wide 8mm are bolted with side
The spacing in hole (5) is 100~140mm.
8. a kind of air setting flue gas heat and mass transfer enhancement element according to claim 1, it is characterised in that：The element
Cast iron, cast aluminium silicon alloy, casting 316L austenitic stainless steels, 317L are selected using acid corrosion-resistant material using integral casting process
Austenitic stainless steel, 2205/2507/2707 two phase stainless steel, high chromium nickel-molybdenum alloy or plastics；The element flue gas side wall surface is adopted
With enamel spraying technology, make that element flue gas side wall surface is corrosion-resistant, abrasion resistance properties improve, surface smoothness improves, accumulatingdust；Root
It is determined with corrosion condition according to each position heat exchange in heat exchanger, to ensure that each section corrosion resistance is best in heat exchanger and is manufactured into
This is minimum.
9. a kind of air setting flue gas heat and mass transfer enhancement element according to claim 1, it is characterised in that：The reinforcing
The both sides square groove of heat and mass element be respectively embedded into two pieces of segmentation tube sheets constitute in longitudinal fin (3) inlet and outlet channel, two
The both sides of block tube sheet are mutually coupled respectively the inlet and outlet channel for constituting outer transverse fin (2), two wing passages be separately connected flue gas and
Air forms flue gas condensing heat exchanger and realizes that air setting flue gas takes off white target.
10. a kind of heat exchanger, it is characterised in that：Multiple claim 1 to 9 any one of them including being arranged in shell are empty
Flue gas heat and mass transfer enhancement element is coagulated in air cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810211209.0A CN108332597A (en) | 2018-03-14 | 2018-03-14 | A kind of air setting flue gas heat and mass transfer enhancement element and its heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810211209.0A CN108332597A (en) | 2018-03-14 | 2018-03-14 | A kind of air setting flue gas heat and mass transfer enhancement element and its heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108332597A true CN108332597A (en) | 2018-07-27 |
Family
ID=62931016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810211209.0A Pending CN108332597A (en) | 2018-03-14 | 2018-03-14 | A kind of air setting flue gas heat and mass transfer enhancement element and its heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108332597A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763399A (en) * | 2020-12-28 | 2021-05-07 | 西安特种设备检验检测院 | Method for detecting flue gas corrosion risk area of low-temperature heating surface of boiler |
| CN114087909A (en) * | 2021-11-19 | 2022-02-25 | 西安交通大学 | Self-vibration inserted bending deflection type fin composite smoke tube |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040069295A1 (en) * | 2002-10-12 | 2004-04-15 | Angelo Rigamonti | Highly efficient heat exchanger and combustion chamber assembly for boilers and heated air generators |
| CN101201228A (en) * | 2007-11-30 | 2008-06-18 | 西安交通大学 | Intensified convection heat-transferring mass-transferring integral inner finned tube structure |
| CN201210027Y (en) * | 2008-05-09 | 2009-03-18 | 溧阳市恒祥特钢机械制造有限公司 | Heat-transfer pipe applying to air preheater |
| CN201355209Y (en) * | 2009-01-22 | 2009-12-02 | 佛山德力梅塞尔气体有限公司 | Novel energy-saving heat exchanger core |
| CN102435087A (en) * | 2011-09-21 | 2012-05-02 | 西安交通大学 | E-shaped axially-symmetrical strengthened heat-exchanging element |
| CN202770299U (en) * | 2012-08-23 | 2013-03-06 | 上海青盛工程设备安装有限公司 | Composite material heat-exchanger tube for flue gas waste heat recovery of boiler |
| CN203216334U (en) * | 2013-04-28 | 2013-09-25 | 王云清 | Flue gas waste heat recovery unit and device breaking through low temperature dew point |
| CN104501639A (en) * | 2014-12-19 | 2015-04-08 | 西安交通大学 | Non-centrosymmetrical H-shaped finned tube and finned tube heat exchange tube bundle |
| CN104613805A (en) * | 2015-01-26 | 2015-05-13 | 西安交通大学 | Axisymmetric comb-shaped inner fin structure and fin tube thereof |
| CN204329696U (en) * | 2014-12-08 | 2015-05-13 | 西安交通大学 | Wing thermoexcell in a kind of |
| CN208091293U (en) * | 2018-03-14 | 2018-11-13 | 西安交通大学 | A kind of air setting flue gas heat and mass transfer enhancement component structure and its heat exchanger |
-
2018
- 2018-03-14 CN CN201810211209.0A patent/CN108332597A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040069295A1 (en) * | 2002-10-12 | 2004-04-15 | Angelo Rigamonti | Highly efficient heat exchanger and combustion chamber assembly for boilers and heated air generators |
| CN101201228A (en) * | 2007-11-30 | 2008-06-18 | 西安交通大学 | Intensified convection heat-transferring mass-transferring integral inner finned tube structure |
| CN201210027Y (en) * | 2008-05-09 | 2009-03-18 | 溧阳市恒祥特钢机械制造有限公司 | Heat-transfer pipe applying to air preheater |
| CN201355209Y (en) * | 2009-01-22 | 2009-12-02 | 佛山德力梅塞尔气体有限公司 | Novel energy-saving heat exchanger core |
| CN102435087A (en) * | 2011-09-21 | 2012-05-02 | 西安交通大学 | E-shaped axially-symmetrical strengthened heat-exchanging element |
| CN202770299U (en) * | 2012-08-23 | 2013-03-06 | 上海青盛工程设备安装有限公司 | Composite material heat-exchanger tube for flue gas waste heat recovery of boiler |
| CN203216334U (en) * | 2013-04-28 | 2013-09-25 | 王云清 | Flue gas waste heat recovery unit and device breaking through low temperature dew point |
| CN204329696U (en) * | 2014-12-08 | 2015-05-13 | 西安交通大学 | Wing thermoexcell in a kind of |
| CN104501639A (en) * | 2014-12-19 | 2015-04-08 | 西安交通大学 | Non-centrosymmetrical H-shaped finned tube and finned tube heat exchange tube bundle |
| CN104613805A (en) * | 2015-01-26 | 2015-05-13 | 西安交通大学 | Axisymmetric comb-shaped inner fin structure and fin tube thereof |
| CN208091293U (en) * | 2018-03-14 | 2018-11-13 | 西安交通大学 | A kind of air setting flue gas heat and mass transfer enhancement component structure and its heat exchanger |
Non-Patent Citations (1)
| Title |
|---|
| 史美中 等: "《热交换器原理与设计 （第5版）》", 东南大学出版社, pages: 170 - 171 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763399A (en) * | 2020-12-28 | 2021-05-07 | 西安特种设备检验检测院 | Method for detecting flue gas corrosion risk area of low-temperature heating surface of boiler |
| CN112763399B (en) * | 2020-12-28 | 2021-09-21 | 西安特种设备检验检测院 | Method for detecting flue gas corrosion risk area of low-temperature heating surface of boiler |
| CN114087909A (en) * | 2021-11-19 | 2022-02-25 | 西安交通大学 | Self-vibration inserted bending deflection type fin composite smoke tube |
| CN114087909B (en) * | 2021-11-19 | 2022-10-25 | 西安交通大学 | Self-vibration inserted bending deflection type fin composite smoke tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102901221B (en) | A kind of pressure fin straight pipe condensation Heat supply and heat exchange device | |
| CN102901225B (en) | A kind of pressure helical fin coil condensation Heat supply and heat exchange device | |
| CN204923980U (en) | Be used for desulfurated heat exchanger of flue gas condensation | |
| CN103940087B (en) | A kind of narrow gap oblateness dual coil pipes entirety condensing boiler | |
| WO2014044205A1 (en) | Forced spiral finned coil and finned serpentine coil condensation heat-supplying heat exchanger | |
| CN103307910A (en) | Anti-corrosion and dirt-resistant efficient flue gas waste heat recovery device | |
| CN205909733U (en) | Novel steam condenser | |
| CN108332597A (en) | A kind of air setting flue gas heat and mass transfer enhancement element and its heat exchanger | |
| CN208587920U (en) | A kind of various dimensions composite moduleization casting condensation enhanced heat exchange device structure | |
| CN101201228A (en) | Intensified convection heat-transferring mass-transferring integral inner finned tube structure | |
| CN208091293U (en) | A kind of air setting flue gas heat and mass transfer enhancement component structure and its heat exchanger | |
| CN104930540B (en) | The flow-guiding structure of air preheater smoke inlet | |
| CN104390499A (en) | Sawtooth porous corrugated fin type plate-fin heat exchanger | |
| CN108731021A (en) | A kind of various dimensions composite moduleization casting condensation enhanced heat exchange device | |
| CN206934982U (en) | A kind of condensate dust arrester | |
| CN206430603U (en) | Three-dimensional emptying anaplasia fume reheater | |
| CN104930872B (en) | Meshy arrangement fluorine plastic tube water economizer | |
| CN104390506A (en) | Sawtooth porous type plate-fin heat exchanger | |
| CN201407634Y (en) | Heat recovery boiler with soot deposit prevention and corrosion-resistant structure | |
| CN206508767U (en) | Flue gas disappears white equipment | |
| CN206670412U (en) | A kind of flue gas heat recovery device of steam generator | |
| CN203249525U (en) | Heat pipe type organic working medium falling film evaporator utilizing low temperature exhaust heat | |
| CN208187183U (en) | A kind of micro-channel heat exchanger and its annular micro-channel tubes | |
| CN203928848U (en) | The condensing heat exchanger of a kind of condensing heat exchange plate and application thereof | |
| CN208205903U (en) | Interior finned tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |