CN204630461U - A kind of three limit spiral bands - Google Patents
A kind of three limit spiral bands Download PDFInfo
- Publication number
- CN204630461U CN204630461U CN201520298894.7U CN201520298894U CN204630461U CN 204630461 U CN204630461 U CN 204630461U CN 201520298894 U CN201520298894 U CN 201520298894U CN 204630461 U CN204630461 U CN 204630461U
- Authority
- CN
- China
- Prior art keywords
- limit spiral
- limit
- heat exchanger
- exchanger tube
- sheet metals
- 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.)
- Expired - Fee Related
Links
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a kind of three limit spiral bands, it is characterized in that, three limit spiral bands have periodic structure, be about 1mm, three sheet metals that width is identical form by thickness, the long limit docking of three sheet metals is also welded together, and the angle of adjacent two sheet metals is 120o; Three limit spiral bands process through helically twisted, and it turns round rate is about 2.0; Three limit spiral band external diameters, 0.5 ~ 1.0mm less of heat exchanger tube internal diameter, its length is general and heat exchanger tube is isometric or slightly short; Three limit spiral bands insert in heat exchanger tube and do not need to arrange fixture; Three limit spiral band materials are determined according to concrete operating mode, for the occasion of the medium that is corrosive, can select stainless steel, also can adopt injection molding; For the occasion not having Korrosionsmedium, select ordinary carbon steel material.The utility model structure is simple, easy for installation, directly inserts in heat exchanger tube, and have the dual-use function of the heat transfer of enhanced tube inner fluid and antiscale, better economy, practicality is stronger.
Description
Technical field
The utility model patent relates to insert and tie in a kind of pipe, particularly relates to a kind of for strengthening fluid heat exchange in heat exchanger tube and the novel three limit spiral bands preventing fouling.
Background technology
Heat transmission equipment is widely used in the industries such as oil, chemical industry, power, nuclear energy, metallurgy, refrigeration, is the infrastructure device that a kind of heat transmits.Such as in oil plant, heat transmission equipment accounts for 35% ~ 40% of whole technological equipment investment, and the height of heat transmission equipment efficiency is to energy-conservation important in inhibiting.Adopt enhanced heat exchange technology, improve the important topic that heat exchanger efficiency is current heat exchanger research field.
In numerous enhanced heat exchange measure, enhanced heat transfer component such as helical spring, flight, rotor, tie etc. in pipe are adopted to realize the with the obvious advantage of heat transmission equipment enhanced heat exchange, especially in recent years in pipe, heat transfer enhancement technology aspect achieves plentiful and substantial achievement in research, achieves the engineer applied of various new high-efficiency heat exchanger equipment.Tie, as a kind of turbulent element of efficient enhanced heat exchange, is widely used in the fields such as the enhanced heat exchange of heat transmission equipment, antiscale and fluid chemical field.
Chinese scholars has carried out many research for built-in tie tube fluid flowing and augmentation of heat transfer, mainly common tie and the special-shaped tie that improves on this basis, as rim openings tie, sawtooth tie, center drilling tie, two tie, flanging tie, staggered tie etc.Turn round compared to common, although the strengthening effect of special-shaped tie has had certain lifting, the fluid flow resistance produced is corresponding increasing also, and combination property needs to be improved further.
Summary of the invention
For above-mentioned technical problem, the utility model provides a kind of three limit spiral bands, the advantages such as structure is simple, easy to process, practical, the coefficient of heat transfer is high, comprehensive heat exchange property is good that it has.
A kind of three limit spiral bands, have periodic structure, are about 1mm by thickness, three sheet metals compositions that width is identical, and the long limit docking of three sheet metals is also welded together, and the angle of adjacent two sheet metals is 120o; Three limit spiral bands process through helically twisted, and it turns round rate is about 2.0.
Described three limit spiral band external diameter 0.5 ~ 1.0mm less of heat exchanger tube internal diameter, three limit spiral band length and heat exchanger tube is isometric or slightly short.
Described three limit spiral bands insert in heat exchanger tube and do not need to arrange fixture.
Described three limit spiral band materials are determined according to concrete operating mode, for the occasion of the medium that is corrosive, select stainless steel, also can adopt injection molding; For the occasion not having Korrosionsmedium, select ordinary carbon steel material.
After the utility model adopts technique scheme, compared with prior art there is following beneficial effect: one is insert three limit spiral bands in pipe, tube fluid can be induced to rotate, fluid is made to produce helical flow and Secondary Flow, add fluid flow, turbulivity, and the time of contact of fluid and heat exchange tube wall, make heat exchange more abundant; Two is insert three limit spiral bands in pipe, and heat exchanger tube center fluid and wall boundary layer fluid can be impelled fully to mix, and thinning retention layer, reaches the object of augmentation of heat transfer; Three is that spiral band adopts three limit structures, stronger than the flow-disturbing effect of common tie, and the resultant effect of augmentation of heat transfer and reduction flow resistance is more excellent.
Accompanying drawing explanation
Fig. 1 is the 3 d effect graph of three limit spiral bands;
Fig. 2 is the three-dimensional section view of interpolation three limit spiral band pipe;
Fig. 3 is the longitudinal section of interpolation three limit spiral band pipe;
Fig. 4 is the cross-sectional view of interpolation three limit spiral band pipe;
Fig. 5 is the nusselt number of interpolation three limit spiral band tube fluid
nuwith Reynolds number
revariation diagram;
Fig. 6 is the resistance coefficient of interpolation three limit spiral band tube fluid
fwith Reynolds number
revariation diagram;
Fig. 7 is the comprehensive performance evaluation index of interpolation three limit spiral band tube fluid
pECwith Reynolds number
revariation diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, structure of the present utility model and parameter thereof are described in further detail:
In figure, 1-blank pipe, 2-tri-limit spiral band,
h-tie half pitch,
θthe angle on the adjacent both sides of-tie,
m-tie the length of side,
d-heat exchanger tube internal diameter,
t-tie thickness.
Three limit spiral bands have periodic structure, are about 1mm by thickness, three sheet metals composition that width is identical, and the long limit docking of three sheet metals is also welded together, and welding procedure adopts two to protect weldering welding, the angle of adjacent two sheet metals
θfor 120o.
Three limit spiral bands process through helically twisted, and it turns round rate
ywith half pitch
hpass be:
y=
h/
d, by changing
hobtain the three limit spiral bands that difference turns round rate, it turns round rate
ybe about 2.0.
Three limits of three limit spiral bands are the distribution of homogeneous radiation shape, its thickness
tbe about 1mm, material is determined according to concrete operating mode, and for the occasion of the medium that is corrosive, three limit spiral bands can select stainless steel, also can adopt injection molding; For the occasion not having Korrosionsmedium, select ordinary carbon steel material.
Application example:
Heat exchanger tube total length
l=600mm, internal diameter
d=20.0mm; Three limit spiral band total length 560mm, the length of side
m=9.0mm, thickness
δ=1.0mm, half pitch
h=40.0mm, turns round rate
y=
h/
d=2.0.Under turbulent flow operating mode, use numerical simulation software ANSYS 15.0 pairs of interpolation three limit spiral band tube fluid heat transfers and flow resistance to simulate, and contrast with blank pipe and the common tie pipe of interpolation, comparing result is as shown in Fig. 5,6,7.
Figure 5 shows that
nuwith
rechanging Pattern.The common tie pipe of interpolation and interpolation three limit spiral band tube fluid
nuall apparently higher than blank pipe under same operating mode.From result of calculation, interpolation three limit spiral band tube fluid
nu70% ~ 116% is improved, tie pipe raising 8.34% ~ 9.72% more common than interpolation than blank pipe.The heat exchange property of interpolation three limit spiral band pipe is better.
Figure 6 shows that
fwith
rechanging Pattern.The resistance coefficient of the common tie pipe of interpolation and interpolation three limit spiral band tube fluid
fall far above blank pipe under same operating mode, the resistance coefficient of interpolation three limit spiral band tube fluid simultaneously
fa little more than common tie pipe.From result of calculation, the resistance coefficient of interpolation three limit spiral band tube fluid
frespectively than blank pipe and the common tie pipe of interpolation
fexceed 251% ~ 327% and 9.23% ~ 11.36%.
Figure 7 shows that comprehensive performance evaluation index
pECwith
rechanging Pattern.Compared to blank pipe and the common tie pipe of interpolation, interpolation three limit spiral band pipe
pECbe worth higher, combination property is better.Interpolation three limit spiral band pipe
pECcan 1.33 be reached, respectively than blank pipe and the common tie pipe of interpolation
pECexceed 12% ~ 33%, 5.47% ~ 5.98%.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement and improvement etc., all should be included within protection domain of the present utility model.
Claims (1)
1. a limit spiral band, it is characterized in that, three limit spiral bands have periodic structure, be about 1mm, three sheet metals that width is identical form by thickness, the long limit docking of three sheet metals is also welded together, and the angle of adjacent two sheet metals is 120o; Three limit spiral bands process through helically twisted, and it turns round rate is about 2.0.
2. a kind of three limit spiral bands according to claim 1, is characterized in that, described three limit spiral band external diameter 0.5 ~ 1.0mm less of heat exchanger tube internal diameter, its length and heat exchanger tube is isometric or slightly short.
3. a kind of three limit spiral bands according to claim 1, is characterized in that, described three limit spiral band materials are determined according to concrete operating mode, for the occasion of the medium that is corrosive, can select stainless steel, also can adopt injection molding; For the occasion not having Korrosionsmedium, select ordinary carbon steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520298894.7U CN204630461U (en) | 2015-05-11 | 2015-05-11 | A kind of three limit spiral bands |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520298894.7U CN204630461U (en) | 2015-05-11 | 2015-05-11 | A kind of three limit spiral bands |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204630461U true CN204630461U (en) | 2015-09-09 |
Family
ID=54049478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520298894.7U Expired - Fee Related CN204630461U (en) | 2015-05-11 | 2015-05-11 | A kind of three limit spiral bands |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204630461U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792219A (en) * | 2015-05-11 | 2015-07-22 | 郑州大学 | Trilateral spiral twisted band |
| CN109488262A (en) * | 2019-01-21 | 2019-03-19 | 常州大学 | A kind of exploitation of gas hydrates silt cyclone separator |
-
2015
- 2015-05-11 CN CN201520298894.7U patent/CN204630461U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792219A (en) * | 2015-05-11 | 2015-07-22 | 郑州大学 | Trilateral spiral twisted band |
| CN109488262A (en) * | 2019-01-21 | 2019-03-19 | 常州大学 | A kind of exploitation of gas hydrates silt cyclone separator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104792219A (en) | Trilateral spiral twisted band | |
| CN103175429B (en) | Multidirectional wave-li ke internally finned tubes | |
| CN108151571B (en) | A kind of spiral venetian blind type rectangle internally finned tube | |
| CN106979714A (en) | A kind of lozenge fin tube beam | |
| CN204630461U (en) | A kind of three limit spiral bands | |
| CN202281538U (en) | Heat exchange tube internally provided with spiral spoilers | |
| CN101839670B (en) | Inner diversion type self-tightening hanging part of heat exchange tube | |
| CN105066764A (en) | Intensified heat exchange tube provided with spiral grooved tube with spiral fin inserted inside | |
| CN105605951A (en) | Novel variable-cross-section twisted tube heat exchanger | |
| CN103697740A (en) | Inner petal-shaped irregular-shaped heat exchange tube | |
| CN204787980U (en) | Heat exchange tube of interpolation interval hurricane band | |
| CN105651094A (en) | Novel variable-section alternating spiral twisted heat exchange tube | |
| CN201242374Y (en) | Longitudinal spiral inner fin tube | |
| CN105526825A (en) | Novel alternately-spiral heat exchange pipe with internal ribs warping | |
| CN203672213U (en) | Heat exchange tube of wavy fins | |
| CN201892469U (en) | Fractal surface structured heat exchange pipe | |
| CN206362220U (en) | A kind of heat exchanger | |
| CN205156701U (en) | Copper spiral plate heat exchanger | |
| CN204787979U (en) | Revolve to hurricane band in turn and be equipped with its heat exchange tube | |
| CN202109787U (en) | Heat exchange device utilizing flat-shaped spiral heat exchange pipes | |
| CN105651097A (en) | Finned tube with variable axial spacing of fins | |
| CN206787361U (en) | A kind of lozenge fin tube binding structure | |
| CN202109789U (en) | Heat exchange device using elliptic spiral heat exchange pipes | |
| CN202109788U (en) | Heat exchange equipment adopting spiral oval heat exchange tubes | |
| CN205156699U (en) | Double -helical -baffle heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160511 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |