CN2150615Y - Profiled monometallic integrated fin tube - Google Patents
Profiled monometallic integrated fin tube Download PDFInfo
- Publication number
- CN2150615Y CN2150615Y CN 93227196 CN93227196U CN2150615Y CN 2150615 Y CN2150615 Y CN 2150615Y CN 93227196 CN93227196 CN 93227196 CN 93227196 U CN93227196 U CN 93227196U CN 2150615 Y CN2150615 Y CN 2150615Y
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- CN
- China
- Prior art keywords
- tube
- monometallic
- utility
- model
- wall
- 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
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model belonging to the element of a forced oil circulation air-cooling device for a transformer is a profiled monometallic integrated fin tube which is suitable for the heat exchanger carrying out the heat exchange between the liquid and the gas, and between the liquid and the liquid. The structure of the utility model is characterized in that fins are arranged on the outer wall of the tube, and straight ribs or spiral ribs are longitudinally arranged on the inner wall of the tube; the inner wall line of the cross section of the straight rib forms a circular arc ripple shape; the number of the spiral ribs can be one or multiple; the profiled monometallic integrated fin tube are manufactured by adopting the material, such as aluminium or aluminium alloy or copper or other material with excellent ductility. The utility model has the advantages of no contact resistance, high heat transfer area in the tube, high thermal efficiency, corrosion resistance, shapely fin, etc., the large-diameter tube can be made into the minor-diameter tube, and the cost price of a cooler is reduced.
Description
The utility model belongs to the element of transformer with the forced oil-circulation forced air cooler, be a kind of, be applicable to that also liquid and gas, liquid and liquid carry out the heat exchanger of heat exchange not only in the pipe fitting outside but also at the isostructural special-shaped monometallic integrally finned tubes of inside employing increase heat-transfer area.
At present the used finned tube of transformer forced oil-circulation forced air cooler is a kind of is the monometallic finned tube.It is to roll to have fin to constitute on the outer wall of plain tube, to reach the purpose that improves radiating efficiency, its weak point is: because inside pipe wall is smooth, and because of the requirement of cooler radiating efficiency, the diameter of pipe is all less, the pipe number that needs is more, causes the manufacturing cost of cooler to increase, and the power consumption of pump in service is more.Another kind is special-shaped bimetallic integrally finned tubes.It is to be made of aluminum finned tube compound on the outer wall of a kind of metal tube that straight rib is arranged on the inwall and that squeeze out fin, to reach purposes such as improving radiating efficiency.Its weak point is: have certain contact heat resistance on the faying face of two kinds of metals inevitably.
The purpose of this utility model is to overcome the weak point in the above-mentioned prior art, and the special-shaped monometallic integrally finned tubes of a kind of both contactless thermal resistance, raising heat transfer efficiency, reduction cooler cost is provided.
The purpose of this utility model can reach by following measure: it comprises the fin (G) of pipe on the outer wall etc., and its special character is: vertically be provided with straight rib (E) or spiral ribs (F) at inside pipe wall; The cross section inwall line of straight rib (E) is that circular arc is corrugated, and promptly its crest and trough are with the circular arc of radius for (R); Spiral ribs (F) can be one or more.
The utility model can adopt metal materials such as good aluminum or aluminum alloy of ductility or copper to make.
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the example structure schematic diagram that the utility model inwall has straight rib;
Fig. 2 is the cross section of inboard wall partial schematic diagram of Fig. 1;
Fig. 3 is the example structure schematic diagram that the utility model inwall has spiral ribs.
With reference to Fig. 1～3.Inwall at smooth metal tube vertically carry out ribization, promptly becomes straight rib E or squeezes out one or more convex spiral ribs F through rotation through cold rolling or cold-drawn along the media flow direction, and rotation squeezes out fin G on the outer wall of pipe then.The cross section inwall line S of straight rib E is that circular arc is corrugated, and promptly its crest and trough are to be the circular arc of R with the radius.β is the five equilibrium angle of crest and the trough of straight rib E, R
1And R
2Be respectively the radius of tube hub to crest and trough.The utility model can adopt materials such as good aluminum or aluminum alloy of corrosion-resistant and ductility or copper to make.
Compared with the prior art the utility model has the following advantages and good effect:
1, consists of integral body because the utility model is a kind of monometallic pipe, do not exist bimetallic in conjunction with the thermal resistance of face;
2, because the utility model inwall is provided with straight rib or spiral ribs, the inside pipe wall heat-transfer area increases, though cross-sectional area A slightly reduces in the pipe, and the long U of wetted perimeter is doubled and redoubled, then equivalent diameter d=4A/U reduces greatly, large diameter pipe minor diameter that can cooler is required, thereby heat transfer efficiency is high and save material;
If 3 adopt inside pipe wall that one or several spiral ribs is arranged, although not as many spiral ribs increase heat transfer area and reduce equivalent diameter so remarkable, but still can resemble near the stirring of abundant reinforced pipe inner fluid tube wall many spiral ribs, the breakable layer laminar boundary layer significantly improves the intraductal heat transfer coefficient and conducts heat to strengthen effectively;
4,, therefore have characteristics such as corrosion-resistant, fin non-lodging attractive in appearance, properties of product be stable because the utility model adopts materials such as aluminum or aluminum alloy or copper to make.
Claims (4)
1, special-shaped monometallic integrally finned tubes comprises the fin (G) of pipe on the outer wall etc., it is characterized in that: vertically be provided with straight rib (E) or spiral ribs (F) at inside pipe wall;
2, special-shaped monometallic integrally finned tubes according to claim 1 is characterized in that: the cross section inwall line of straight rib (E) is that circular arc is corrugated;
3, special-shaped monometallic integrally finned tubes according to claim 1, it is characterized in that: spiral ribs (F) can be one or more;
4, according to claim 1 or 2 or 3 described special-shaped monometallic integrally finned tubes, it is characterized in that: it can adopt materials such as good aluminum or aluminum alloy of ductility or copper to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227196 CN2150615Y (en) | 1993-01-29 | 1993-01-29 | Profiled monometallic integrated fin tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93227196 CN2150615Y (en) | 1993-01-29 | 1993-01-29 | Profiled monometallic integrated fin tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2150615Y true CN2150615Y (en) | 1993-12-22 |
Family
ID=33804519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93227196 Expired - Fee Related CN2150615Y (en) | 1993-01-29 | 1993-01-29 | Profiled monometallic integrated fin tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2150615Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252557A (en) * | 2011-05-19 | 2011-11-23 | 山东北辰压力容器有限公司 | Rectangular longitudinal fin heat exchange element |
| CN103115516A (en) * | 2011-11-16 | 2013-05-22 | 江苏大自然电器标牌厂 | Integral spiral finned tube |
| CN105261449A (en) * | 2015-10-23 | 2016-01-20 | 吉林大学 | Oil-cooled transformer with bundle-type radiator |
-
1993
- 1993-01-29 CN CN 93227196 patent/CN2150615Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252557A (en) * | 2011-05-19 | 2011-11-23 | 山东北辰压力容器有限公司 | Rectangular longitudinal fin heat exchange element |
| CN103115516A (en) * | 2011-11-16 | 2013-05-22 | 江苏大自然电器标牌厂 | Integral spiral finned tube |
| CN105261449A (en) * | 2015-10-23 | 2016-01-20 | 吉林大学 | Oil-cooled transformer with bundle-type radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |