CN203323606U - Fin type spiral pipe - Google Patents
Fin type spiral pipe Download PDFInfo
- Publication number
- CN203323606U CN203323606U CN2013202076631U CN201320207663U CN203323606U CN 203323606 U CN203323606 U CN 203323606U CN 2013202076631 U CN2013202076631 U CN 2013202076631U CN 201320207663 U CN201320207663 U CN 201320207663U CN 203323606 U CN203323606 U CN 203323606U
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- Prior art keywords
- helix tube
- fin
- spiral pipe
- tube
- helix
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- Expired - Fee Related
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A fin type spiral pipe comprises a spiral pipe provided with an annular cross section, wherein a plurality of fins are uniformly arranged on the inner wall of the spiral pipe; each fin adopts a spiral structure which has the same screw lead with the spiral pipe; and a cross section of each fin is fan-shaped, and the radius of each fin is the same as that of a round surface of the inner wall of the cross section of the spiral pipe.
Description
Technical field
The utility model relates to a kind of finned Novel spiral coil device, especially can improve the fluid nowed forming, strengthens the helix tube of heat exchange efficiency.
Background technology
Helix tube is a kind of typical space curve pipe, because of energy free wxpansion, can effectively eliminate the temperature stress in the course of work, can significantly reduce again the welding of tube-to-tube sheet connection, Leakage probability is little, good reliability, and compact conformation, heat transfer efficiency is high, has spontaneous centrifugal force field and Secondary Flow, can effectively postpone the generation of heat transfer deterioration, thereby extensive use in the industries such as power, oil, chemical industry, navigation, space flight and nuclear industry.The large-scale spiral pipe heat transmission equipment in petrochemical industry for example, separation equipment in extraction equipment, the rotor water cooling pipeline of large-scale double water innercooling electric generator, rotate cooling pipe in nuclear industry, special-shaped closed cycle Heat Engine Propeller System in navigation, space technology etc.The research of helix tube technology (relating to the aspects such as flow pattern research, drooping characteristic research, augmentation of heat transfer research) is to promote one of guardian technique of the engineering field development such as power, oil, chemical industry.But, when heat transfer is had relatively high expectations, while particularly in pipe, having biphase gas and liquid flow, fluidised form complexity in pipe, gas-liquid two-phase dielectric distribution inequality, the heat exchange efficiency of this common helix tube often can not meet instructions for use.
Summary of the invention
The nowed forming that the utility model will overcome the tube fluid of existing heat-exchanging spiral-coil is unfavorable for the shortcoming of heat exchange efficiency, a kind of finned helix tube is provided, this finned helix tube can make the biphase gas and liquid flow in helix tube be uniformly distributed, and the heat exchange efficiency of outer fluid in riser significantly.
The utility model solves the technical scheme that its technical problem adopts: finned helix tube, comprise the helix tube of ring cross-section, and it is characterized in that: be evenly arranged some fins at the helix tube inwall, fin is the helical structure identical with the helix tube helical pitch; The cross sectional shape of fin is fan-shaped, and its radius is identical with the radius of helix tube cross section inwall disc.
Further, described fin is arranged on the outside of the inwall of helix tube, and the fan-shaped center of circle of fin overlaps with the center of circle of helix tube.
When fluid flows in helix tube, the sector crosssection of fin has blocking action to the fluid mobile along helix, increased the less turbulence of tube fluid, particularly when tube fluid is two-phase fluid, can significantly increase the mass-transfer efficiency of two-phase medium, gas-liquid two-phase is fully mixed, be evenly distributed, thereby improve heat exchange efficiency.In addition, when fluid flows in helix tube, due to the effect of centrifugal force, fluid flows to outer side surface from pipeline center by the helix tube interior sidewall surface, thereby makes the helix tube outside pressure higher than inside pressure.Under differential pressure action, from the outside, the upper and lower wall along pipe flows back to inboard to fluid, and the Secondary Flow that this flow direction is vertical with the main body mobile phase of pipeline, can destroy fluid boundary layer equally, is conducive to mass transfer and the heat transfer of fluid.And fin is being equivalent to a wedge-shape diversion plate perpendicular to helix tube inner fluid main body flow direction, has strengthened the intensity of this secondary flow, thereby can further strengthen mass transfer and the heat-transfer effect of helix tube inner fluid.
The beneficial effects of the utility model are, can increase the mobile less turbulence of helix tube inner fluid, change nowed forming, when tube fluid is biphase gas and liquid flow, can the mass transfer enhancement effect, and improve heat exchange efficiency.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the finned spiral tube structure schematic diagram of the utility model.
Fig. 2 is the fin distribution schematic diagram of finned helix tube.
Fig. 3 is helix tube import and fin structure figure.
The specific embodiment
1. helix tubes outlets in figure, 2. helix tube, 3. helix tube import, 4 fins.
Finned helix tube comprises and the helix tube 2 of ring cross-section is evenly arranged some fins 4 at helix tube 2 inwalls that, for convenience of processing and manufacturing, fin 4 is helical structures identical with helix tube 2 helical pitches; The cross sectional shape of fin 4 is fan-shaped, and its radius is identical with the radius of helix tube 2 cross section inwall discs.Described fin is arranged on the outside of the inwall of helix tube, and the fan-shaped center of circle of fin overlaps with the center of circle of helix tube.
In Fig. 1, this utility model is a helix tube that pitch is t=125mm, the number of turns n=2 of helix tube, and helix tube height H=t * n=250mm, the helix of helix tube is circular helix, body diameter D=160mm.The Helical Tube wall thickness is 2mm.Be distributed with fin in helix tube.
In Fig. 2, in each circle of helix tube, 4 fins are arranged, in this embodiment, helix tube has 2 circles, therefore always has 8 fins.Take in the cylindrical-coordinate system that the helix tube central axis is vertical pivot, the angle between two adjacent fins is 45 °.
In Fig. 3, the cross section of helix tube is annulus, and the circle ring inner wall diameter is d
i=26, outer diameter is d
o=30.Fin is a sector crosssection spiral entity that pitch is identical with helix tube, its height H=4mm.The radius of this sector crosssection is identical with helix tube inner wall section radius of a circle.The circular arc of fin sector crosssection is positioned on the inner tubal wall in the helix tube outside.
The described content of this specification embodiment is only enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reaches the equivalent technologies means that design can be expected according to the utility model in those skilled in the art.
Claims (2)
1. finned helix tube, comprise the helix tube of ring cross-section, and it is characterized in that: be evenly arranged some fins at the helix tube inwall, fin is the helical structure identical with the helix tube helical pitch; The cross sectional shape of fin is fan-shaped, and its radius is identical with the radius of helix tube cross section inwall disc.
2. finned helix tube as claimed in claim 1, it is characterized in that: described fin is arranged on the outside of the inwall of helix tube, and the fan-shaped center of circle of fin overlaps with the center of circle of helix tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202076631U CN203323606U (en) | 2013-04-22 | 2013-04-22 | Fin type spiral pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202076631U CN203323606U (en) | 2013-04-22 | 2013-04-22 | Fin type spiral pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203323606U true CN203323606U (en) | 2013-12-04 |
Family
ID=49662947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202076631U Expired - Fee Related CN203323606U (en) | 2013-04-22 | 2013-04-22 | Fin type spiral pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203323606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206883A (en) * | 2013-04-22 | 2013-07-17 | 浙江工业大学 | Finned spiral pipe |
-
2013
- 2013-04-22 CN CN2013202076631U patent/CN203323606U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206883A (en) * | 2013-04-22 | 2013-07-17 | 浙江工业大学 | Finned spiral pipe |
| CN103206883B (en) * | 2013-04-22 | 2015-10-28 | 浙江工业大学 | Finned helix tube |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20180422 |