CN202109802U - Spiral oval heat exchange tube - Google Patents
Spiral oval heat exchange tube Download PDFInfo
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- CN202109802U CN202109802U CN 201120191717 CN201120191717U CN202109802U CN 202109802 U CN202109802 U CN 202109802U CN 201120191717 CN201120191717 CN 201120191717 CN 201120191717 U CN201120191717 U CN 201120191717U CN 202109802 U CN202109802 U CN 202109802U
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- heat exchanger
- tube
- oval
- exchanger tube
- spiral
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Abstract
The utility model discloses a spiral oval heat exchange tube which at least comprises a tube body. A medium channel is defined by the tube body which has an oval cross section. A second end of the tube body around the axis of the tube body is twisted opposite to a first end of the tube body to form a set angle, and then a spiral tube wall is formed. The spiral oval heat exchange tube is low in cost, convenience in fabrication, high in heat exchange rate and applied to various industries, such as petroleum, chemical engineering, chemical fertilizer, furnaces, medicine manufacture, foods, electric power, nuclear power, environmental protection, heat supply and the like to serve as the tube used for a high efficiency heat exchanger or heat exchange device.
Description
Technical field
The utility model relates to the metal tube processing technique field, relates in particular to a kind of oval heat exchanger tube of spiral that is used for heat transmission equipment such as heat exchanger.
Background technology
Press GB/T24590-2009 " special tube for high-efficiency heat exchanger " standard, the existing heat exchanger of China uses efficient special type pipe to be divided into to be four major types, to be respectively T type barrel, bellows, interior ripple male-pipe, interior barrel.Their maximum common ground are: all be to go up at metal parent tube (straight collimator) through cold machining process to make the heat exchanger tube that processes.
As shown in Figure 1, T type barrel of the prior art forms intensive helical form T type groove 11 through cold working on the outer wall of metal parent tube 1.T type barrel can be divided into by version: the I type, and the pipe outer wall is T type conduit, inside pipe wall smooth surface; The II type, the pipe outer wall is T type conduit, and the inside pipe wall surface is corrugated.
As shown in Figure 2, bellows of the prior art forms the heat exchanger tube that the inside and outside surface of pipe all is corrugated 11 through cold working on metal parent tube 1.
As shown in Figure 3, of the prior art in the ripple male-pipe, on metal parent tube 1, form the pipe outer wall and be the heat exchanger tube that screw thread 11, inside pipe wall are corrugated 12 through cold working.
As shown in Figure 4, of the prior art in barrel, at the inwall of metal parent tube 1 heat exchanger tube through cold working formation groove 11.Interior barrel can be divided into by version: I type, axial notch; The II type, helical groove.
Above-mentioned four big types of heat exchanger tubes are compared with the metal straight collimator that directly is used as heat exchanger tube without cold working; Because on the metal parent tube, have the formed flute profile of cold working, waveform etc.; Strengthened heat-transfer effect; Therefore the heat exchange area and the heat exchange efficiency of heat exchanger tube have been improved effectively, so be called as heat exchanger with " efficiently " heat exchanger tube.
Above-mentioned these four big types of heat exchanger tubes all pass through cold-formed as parent tube with the seamless metal straight collimator, its cold machining process mainly is that the seamless metal straight collimator is done shape variation.Further, these four big types of heat exchanger tubes all are on the inside and outside wall of seamless metal straight collimator, to carry out cold working, and the processing amplitude is limit by pipe thickness, therefore are difficult to improve significantly heat exchange area again.
Heat exchanger tube of the prior art is when doing heat exchange, and heat transferring mediums such as water, oil, gas circulate in heat exchanger tube, by means of the technical purpose of heat-shift between other media that the heat exchange tube wall is realized and heat exchanger tube is outer.In heat exchanging process, more abundant near the heat exchange that heat transferring medium carried out in heat exchanger tube tube wall zone, heat exchange efficiency is higher; And away from the heat exchanger tube tube wall, be positioned at the heat exchange of heat transferring medium of heat exchanger tube central area and insufficient, though above-mentioned heat exchanger tube therefore of the prior art improves through certain, whole heat exchange efficiency is still lower.
And, some tangible deficiency below heat exchanger tube of the prior art also exists in production, use:
1, be limited by the specification limits of cold working equipment, the heat exchanger tube finished product all receives great limitation at aspects such as specification, length;
2, because the cold working step is arranged, raw-material loss is bigger;
3, because the cold working process is complicated, cause the machining accuracy of product uneven;
4, the method for inspection of cold machining process and measuring means are difficult to guarantee end product quality;
5, limited by processing technology, tubulation efficient is not high;
6, these four big types of heat exchanger tubes have special external form mostly, and the making of giving heat exchange equipment brings many inconvenience such as the disposal to the deflection plate of bellows, outer barrel;
7, these four big types of heat exchanger tubes all pass through cold working, have residual stress on the body, medium through the time can form turbulent flow, strengthened the local corrosion of heat exchanger tube, so caused certain negative effect the service life of heat exchanging device equipment.
Heat exchanger tube of the prior art has got into a technical bottleneck for above-mentioned reasons, and heat exchange area, heat exchange efficiency are difficult to increase substantially again, have restricted the development of heat exchanger, are difficult to satisfy the demand in market.
Therefore, those skilled in the art is devoted to develop high, the simple in structure heat exchanger tube of a kind of heat exchange efficiency always.
The utility model content
Because the above-mentioned defective of prior art, the utility model technical problem to be solved provides the oval heat exchanger tube of the high spiral of a kind of heat exchange efficiency.
For realizing above-mentioned purpose, the utility model provides a kind of spiral oval heat exchanger tube, comprises body at least, and said body surrounds and forms a medium channel; Second end that said body has oval cross section and a said body reverses a set angle and forms the spirality tube wall around first end of the said relatively body of axis of said body.
Preferably, the two ends of said body have straight length respectively.
Preferably, said medium channel is the twisted shape passage that major axis progressively reverses around oval center.
Preferably, said body is the metal welded tube.
The oval heat exchanger tube of the spiral of the utility model adopts oval-shaped cross section; The middle heat transfer zone that cross-sectional area in the prior art is bigger is dwindled; Approaching or identical with the cross-sectional area of peripheral heat transfer zone; Improve the heat exchange efficiency of middle heat transfer zone in the medium channel, thereby improved the heat exchange efficiency of the oval heat exchanger tube of whole spiral.
Especially, the utility model also forms the spirality tube wall through second end of body is reversed a set angle around first end of the relative body of axis of body.Because oval-shaped major axis zone and minor axis zone have different heat exchange efficient; When the body internal flow of heat transferring medium at the heat exchanger tube of the utility model; Because the above-mentioned special shape of body; Heat transferring medium has a flow trace that rolls when moving ahead in body, the heat transferring medium that will be positioned at major axis zone and minor axis zone constantly exchanges, and has improved the heat exchange efficiency of heat exchanger tube greatly.
Therefore the oval heat exchanger tube of the spiral of the utility model is roughly the several times of existing heat exchanger tube on whole heat exchange efficiency, be much higher than existing heat exchanger tube.
It is raw material that the utility model also adopts welded tube first, and the cost of welded tube is lower at least by about 20% than the cost that is used as the raw-material seamless pipe of heat exchanger tube in the prior art, thereby the utility model has reduced the manufacturing cost of heat exchanger tube significantly.
The oval heat exchanger tube of the spiral of the utility model; Have simple in structure; Cost is low, makes beneficial effects such as facility, is applicable to the pipe of using that is used as high-performance heat exchanger or heat transmission equipment in the multiple industries such as oil, chemical industry, chemical fertilizer, boiler, pharmacy, food, electric power, nuclear energy, environmental protection, heat supply.
The utility model also provides the online tubulation processing technology of the oval heat exchanger tube of above-mentioned arbitrary described spiral, may further comprise the steps at least:
Step 2 is placed into the roller machine with said metal circular tube;
Step 3, receive a series of oval pressing mold extruding after, said metal circular tube forms non-circular cross-section, obtains the oval heat exchanger tube as intermediate products;
Step 4, second end of the said oval heat exchanger tube that step 3 is obtained around the axis of said oval heat exchanger tube relatively its first end reverse a set angle, obtain one have a spirality tube wall the oval heat exchanger tube of spiral.
Preferably, the size of said set angle is relevant with the length of oval heat exchanger tube.
Preferably, said oval cross section is the continuous cold rolling machined surface that said metal circular tube obtains through press process.
Preferably, said metal circular tube is the metal welded tube.
Oval mould in the utility model must be considered factor when design:
1, should not leave the existence of sharp comer in the structural design of the oval mould of spiral, concentrate the tube wall crackle that causes to prevent the existing in use stress of heat exchanger tube.
2, oval tube wall will be complementary with the diameter and the wall thickness of heat exchanger tube.
3, ellipse will adapt with DESIGN OF NON ADIABATIC and instructions for use.
4, the best heat exchange area of increase heat exchanger tube and heat exchange efficiency are the starting points of the oval mould design of spiral.
The online pressing process of the oval heat exchanger tube of the spiral of the utility model should be followed following requirement: 1, the target level of product quality of the oval heat exchanger tube of spiral should strictly be implemented with the welding tube quality standard-required by associated heat exchanger; 2, necessary 100% EDDY CURRENT of the weld seam of the oval heat exchanger tube of spiral is qualified, and 100% water pressure test is qualified; 3, the oval heat exchanger tube of spiral should carry out the high tempering typing, is strictly on guard against the shape of product resilience; 4, the oval heat exchanger tube of spiral should be eliminated heat treatment extruding residual stress through online heat treatment; 5, the online compacting tool set of the oval heat exchanger tube of spiral should have the unlatching closure function, can leave sufficiently long round light pipe section at the welded tube two ends according to customer demand, in order to the heat exchanger tube manufacturing; 6, the surfaces externally and internally abnormity position of the oval heat exchanger tube of spiral does not all have sharp comer or corner angle existence.
Heat exchange tube machining technique is compared in the utility model and the prior art; Owing to there is not a large amount of cold working operations; Need not a large amount of cold working operations place, special cold working equipment and professional technique workman, saved investment cost and manufacturing cost, thereby reduced the production cost of heat exchanger tube significantly; Improve manufacturing efficient, had the stable machining quality.
Owing to there is not cold working; The oval heat exchanger tube of the spiral of the utility model has significantly reduced raw-material consumption; Also owing to do not have a large amount of cold worked residual stress and more smooth interior appearance, oval heat exchanger tube resistance to corrosion of the spiral of the utility model and resistive connection dirt ability obviously are superior to the product that existing technology is produced.
Because a large amount of raw material that use welded tube as oval pipe, the production cost of welded tube itself just reach 20% than seamless pipe is low.Also owing to effective performance of welded tube inherent characteristic, the oval size of its heat exchanger tube can be several times as much as the special type pipe of producing with seamless pipe, and its heat exchange area and heat exchange efficiency are much higher than " the effective special type pipe of high efficient heat exchanging ".
Compare with hot jacket tubulation processing technology, the utility model has reduced the secondary operations flow process of welded tube, has save the outer Equipment for Heating Processing of line of hot jacket processing; Because on-line continuous production operation; Its production efficiency is approximately nearly ten times of existing technologies, makes the tubulation cost cheaper, and tubulation efficient is faster.
And online tubulation also has incomparable advantage aspect the length of finished product.Because online tubulation be continuously processing, in theory, as long as be aided with a follow-up cutting work step, the spiral ellipse heat exchanger tube that online tubulation is produced the utility model of acquisition can satisfy client's all lengths requirement.
Because automatic control, constant product quality, the accurate to dimension of online assignment production are higher than existing handicraft product quality level.
The utility model and existing special tube for high-efficiency heat exchanger process technology from the tubulation apparatus cost relatively, existing heat exchanger tube production must have special machined, cold working equipment.And the utility model only need be on existing tubulation apparatus be done simple transformation to mould etc., increases the oval pressing molds of many group spirals, just can online compacting form desired various oval pipes.Through online heat treatment mechanism, eliminate the residual stress of the oval heat exchanger tube on-line machining of spiral, to increase ability to stress corrosion resistant; Through online heat treatment mechanism, eliminate the deformation resilience of the oval heat exchanger tube of spiral simultaneously, obtain dimensionally stable, the oval heat exchanger tube of the spiral of physical dimension requirement up to specification.
Therefore, the utility model has reduced the investment in factory building and place, has reduced investment, the place area occupied need not enlarge; Instant effect; Beneficial effects such as production efficiency height, its production efficiency are approximately the several times of existing technology, are much higher than the processing technology of existing heat exchanger tube.
Description of drawings
Fig. 1 is the structural representation of a kind of T type barrel in the prior art;
Fig. 2 is the structural representation of a kind of bellows in the prior art;
Fig. 3 is the structural representation of a kind of interior ripple male-pipe in the prior art;
Fig. 4 is the structural representation of a kind of interior barrel in the prior art;
Fig. 5 is the cross-sectional structure sketch map of the embodiment 1 of the oval heat exchanger tube of the spiral of the utility model;
The left TV structure sketch map of Fig. 6 Fig. 5;
Fig. 7 is the compacting flow sheet equipment sketch map of the utility model middle tube body.
The specific embodiment
Below will combine accompanying drawing that the technique effect of design, concrete structure and the generation of the utility model is described further, with purpose, characteristic and the effect of understanding the utility model fully.
Embodiment 1:
As shown in Figure 5, the oval heat exchanger tube 1 of the spiral of the utility model is one to have the metal welded tube of certain-length, like austenitic stainless steel welded tube, carbon steel welded tube, titanium or titanium alloy welded tube, nickel and nickel alloy welded tube, or austenite-ferrite dual phase steel welded tube etc.
Shown in Figure 5 is its shape of cross section, has oval cross section, and the inner surface of body 2 is a smooth surface.
Shown in Figure 6, body 2 is from as spirality, and second end 22 of body 2 is around the axis of body 2, and first end 21 of body 2 reverses a set angle relatively, and forms the spirality tube wall.
The inside of body 2 forms the medium channel 3 of heat transferring medium circulation.
Body 2 has oval cross section, and medium channel 3 is divided into two side heat transfer zone 31 and a middle heat transfer zone 32.The cross-sectional area of two side heat transfer zone 31 is roughly the same with the cross-sectional area of middle heat transfer zone 32 respectively.
Among this paper, described " roughly the same " not strict identical.As long as the cross-sectional area of heat transfer zone 32 is not more than 3 times of cross-sectional area of side heat transfer zone 31 in the middle of making, or be not less than 1/3 the getting final product of cross-sectional area of side heat transfer zone 31.
Particularly, the body 2 in the present embodiment is to adopt press process technology to form by a circular metal welded tube, and ellipsoid is the continuous cold rolling machined surface that body 2 obtains through press process.
The corner of circular arc will have certain radian, and according to the difference of body 2 diameters, preferably adopting knuckle radius is the 2-10 millimeter.Avoided the existence of sharp comer like this.
See from shape of cross section; The inner surface of present embodiment middle tube body 2 is to be formed by oval surface; The oval heat exchanger tube 1 of such spiral is when doing heat exchange; The heat exchange efficiency of two end periphery heat transfer zone 31 and a middle heat transfer zone 32 is all than higher, and the heat transferring mediums in the particularly middle heat transfer zone 32 also participate in the heat transfer process fully, has improved the heat exchange efficiency of the oval heat exchanger tube 1 of spiral widely.
Especially, the utility model also forms the spirality tube wall through second end 22 of body is reversed a set angle around first end 21 of the relative body of axis of body 2.Particularly, for example to one meter long heat exchanger tube, the set angle that body reverses can be 30 ° to 180 °; To six meters long heat exchanger tubes, this set angle can be 360 ° to 1080 °.Above-mentioned data are not the qualification to the utility model.The size of this set angle also can be relevant with the flowability of heat transferring medium.
Because oval-shaped major axis zone (overlapping basically with side heat transfer zone 31) and minor axis zone (overlapping basically with middle heat transfer zone 32) have different heat exchange efficient; When the body internal flow of heat transferring medium at the heat exchanger tube of the utility model; Because the above-mentioned special shape of body; Heat transferring medium has a flow trace that rolls when moving ahead in body, the heat transferring medium that will be positioned at major axis zone and minor axis zone constantly exchanges, and has improved the heat exchange efficiency of heat exchanger tube greatly.
Like the body in the present embodiment 2, its beneficial effect is, not only can improve the heat exchange area of the oval heat exchanger tube 1 of spiral significantly, has improved the heat exchange efficiency of the oval heat exchanger tube 1 of spiral; Can also strengthen the flow and the flow velocity of heat transferring mediums in the middle heat transfer zone 32, also improve the heat exchange efficiency of the oval heat exchanger tube 1 of spiral.Further, also improve the exchange of the heat transferring medium of zones of different in the body 2, improved heat exchange efficiency greatly.
The oval heat exchanger tube of the spiral of the utility model is not also owing to have cold working after the tubulation moulding, so internal structure stress eliminates basically, and anti-fouling tendency, corrosion resistance are better.
According to client's needs, the entire length of the oval heat exchanger tube of the spiral of the utility model can be chosen between ten several meters at 0 meter.Certainly, if the reasonable disposition heat-treatment furnace, the entire length of the oval heat exchanger tube of the spiral of the utility model can also be in random length, and is not subject to the specification of cold working equipment.
Embodiment 2:
The structure of the oval heat exchanger tube of the spiral of present embodiment and the foregoing description is basic identical, all comprises a body, and institute's difference is in the present embodiment, at the two ends of body, also to have straight length respectively.Straight length and ellipse spiral section are answered rounding off, can not sharply be out of shape.
Having straight length gets the oval heat exchanger tube of spiral and in the assembling processing of heat transmission equipment, has better assembling and sealing property.
The oval heat exchanger tube 1 of the spiral of the utility model, its online tubulation processing technology comprises at least:
In the present embodiment, body 2 is the metal welded tube, and its cross section inside is formed by oval surface.In conjunction with shown in Figure 7, body 2 obtains through press process technology.
In the step 2; Press device mainly comprises a series of support 401,402,403; Be respectively arranged with top roll 411,412,413 and lower roll 421,422,423 on each support, also be respectively arranged with a series of left roller, right roller (not shown) in the both sides of body 2.All be provided with or be formed with the oval pressing mold of spiral of a series of progressively distortion on each Kun.
Step 3 after a series of oval pressing mold extruding, obtains the oval heat exchanger tube 2 as intermediate products.
Press in the process of arc shaping at body 2, corner has been avoided the existence of sharp comer.
Step 4 (not doing diagram), second end 22 of the said oval heat exchanger tube 2 that step 3 is obtained around the axis of said oval heat exchanger tube relatively its first end 21 reverse a set angle, obtain one have a spirality tube wall the oval heat exchanger tube of spiral.
In other embodiments, can also make two ends end face and its axis normal of the oval heat exchanger tube of spiral through a spot of cold working, and remove the otch burr.
In other embodiments, can also the both ends of body be reserved as straight length.
The main body of on-line machining equipment is a prior art, just according to the shape needs of the oval heat exchanger tube of spiral, has designed the oval pressing mold of a series of spiral according to conventional method.
Therefore the utility model can be used for processing the oval heat exchanger tube of spiral among the arbitrary embodiment of the utility model, all has identical beneficial effect.
In sum, the just several kinds of preferred embodiment of the utility model described in this specification, above embodiment is only unrestricted in order to the technical scheme of explanation the utility model.All technical staff in the art according to the design of the utility model on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be within the claim protection domain of the utility model.
Claims (4)
1. the oval heat exchanger tube of spiral comprises body at least, and said body surrounds and forms a medium channel; It is characterized in that: second end that said body has oval cross section and a said body reverses a set angle and forms the spirality tube wall around first end of the said relatively body of axis of said body.
2. the oval heat exchanger tube of spiral as claimed in claim 1, it is characterized in that: the two ends of said body have straight length respectively.
3. the oval heat exchanger tube of spiral as claimed in claim 1, it is characterized in that: said medium channel is the twisted shape passage that major axis progressively reverses around oval center.
4. like the oval heat exchanger tube of the arbitrary described spiral of claim 1 to 3, it is characterized in that: said body is the metal welded tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120191717 CN202109802U (en) | 2011-06-08 | 2011-06-08 | Spiral oval heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120191717 CN202109802U (en) | 2011-06-08 | 2011-06-08 | Spiral oval heat exchange tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202109802U true CN202109802U (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120191717 Expired - Fee Related CN202109802U (en) | 2011-06-08 | 2011-06-08 | Spiral oval heat exchange tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN202109802U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234230A (en) * | 2015-11-06 | 2016-01-13 | 福建省晋江市佶龙机械工业有限公司 | Elliptical rolling type radiating pipe and manufacturing equipment thereof |
| CN105234229A (en) * | 2015-11-06 | 2016-01-13 | 福建省晋江市佶龙机械工业有限公司 | Elliptical rolling type radiating pipe and manufacturing equipment thereof |
| CN108266642A (en) * | 2018-01-23 | 2018-07-10 | 深圳市燃气集团股份有限公司 | A kind of intermediate medium heat exchanger based on enhanced tube |
| CN109405620A (en) * | 2018-11-14 | 2019-03-01 | 浙江中达特钢股份有限公司 | A kind of efficient stainless steel jointless heat exchanger tube |
-
2011
- 2011-06-08 CN CN 201120191717 patent/CN202109802U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234230A (en) * | 2015-11-06 | 2016-01-13 | 福建省晋江市佶龙机械工业有限公司 | Elliptical rolling type radiating pipe and manufacturing equipment thereof |
| CN105234229A (en) * | 2015-11-06 | 2016-01-13 | 福建省晋江市佶龙机械工业有限公司 | Elliptical rolling type radiating pipe and manufacturing equipment thereof |
| CN108266642A (en) * | 2018-01-23 | 2018-07-10 | 深圳市燃气集团股份有限公司 | A kind of intermediate medium heat exchanger based on enhanced tube |
| CN109405620A (en) * | 2018-11-14 | 2019-03-01 | 浙江中达特钢股份有限公司 | A kind of efficient stainless steel jointless heat exchanger tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Kemi Steel Tube Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20130608 |