CN102297621A - Heat exchange device applying spiral elliptical heat exchange tubes - Google Patents
Heat exchange device applying spiral elliptical heat exchange tubes Download PDFInfo
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- CN102297621A CN102297621A CN2011101527507A CN201110152750A CN102297621A CN 102297621 A CN102297621 A CN 102297621A CN 2011101527507 A CN2011101527507 A CN 2011101527507A CN 201110152750 A CN201110152750 A CN 201110152750A CN 102297621 A CN102297621 A CN 102297621A
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Abstract
The invention discloses a heat exchange device applying spiral elliptical heat exchange tubes. The heat exchange device at least comprises a tube bundle body; the tube bundle body is provided with a tube plate, and a plurality of spiral elliptical heat exchange tubes penetrate through the tube plate; the spiral elliptical heat exchange tubes at least comprise tube bodies which surround into a medium channel; and each tube body is provided with an elliptical cross section and a second end of the tube body is twisted for set angle relative to a first end of the tube body and surrounding the axis of the tube body so as to form a spiral pipe wall. According to the heat exchange device applying the spiral elliptical heat exchange tubes provided by the invention, because the spiral elliptical heat exchange tubes are adopted, the heat exchange efficiency is improved greatly, the integral heat exchange efficiency of the heat exchange device is much higher than that of the existing heat exchange device, the heat exchange device has the beneficial effects that the cost is low, and the manufacturing is convenient, and the heat exchange device is suitable for various industries of petroleum, chemical engineering, fertilizers, boilers, pharmacy, food, electrical power, nuclear energy, environmental protection, heat supply and the like.
Description
Technical field
The present invention relates to mechanical equipment technical field, relate in particular to a kind of heat-exchange apparatus that is used for heat exchange.
Background technology
Heat-exchange apparatus is the widely used a kind of visual plants of numerous industries, also is one of key equipment of saving energy and reduce the cost.As everyone knows, the efficient of heat-exchange apparatus and energy-conservation core are heat exchanger tube.
At present, what use amount was maximum in the world is the seamless pipe of various different materials, and still, its usefulness has performed to ultimate attainment, so the appearance of high-performance heat exchanger with shape tube arranged, has improved the efficient of all kinds of heat transmission equipments greatly, and its main feature is as follows:
Press GB/T24590-2009 " high-performance heat exchanger heat-exchange apparatus " standard, the existing high-efficiency heat exchange tube for heat exchanger of China is divided into and is four major types, is respectively T type barrel, bellows, interior ripple male-pipe, interior barrel.The common ground of their maximums is: all be to go up at metal parent tube (straight collimator) by 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 by 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 by 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 by cold working.
As shown in Figure 4, of the prior art in barrel, form the heat exchanger tube of groove 11 by cold working at the inwall of metal parent tube 1.Interior barrel can be divided into by version: I type, axial notch; The II type, helical groove.
Above-mentioned four big class 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 " efficiently " heat exchanger tube.
Above-mentioned this four big class heat exchanger tube all passes through cold-formed as parent tube with the seamless metal straight collimator, its cold machining process mainly is the variation of the seamless metal straight collimator being done shape.Further, this four big class heat exchanger tube all is to carry out cold working on the inside and outside wall of seamless metal straight collimator, and the processing amplitude is limit by pipe thickness, therefore is 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 is subjected to great limitation at aspects such as specification, length;
2, because the cold working step is arranged, raw-material loss is bigger;
3, because cold working process complexity causes 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, this four big class heat exchanger tube has 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, this four big class heat exchanger tube all passes through cold working, has residual stress on the body, medium by 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-exchange apparatus of the prior art has entered 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-exchange apparatus, are difficult to satisfy the demand in market.
Therefore, those skilled in the art is devoted to develop the high heat-exchange apparatus of a kind of heat exchange efficiency always.
Summary of the invention
Because the above-mentioned defective of prior art, technical problem to be solved by this invention provides the heat-exchange apparatus of the oval heat exchanger tube of the high application spiral of a kind of heat exchange efficiency.
For achieving the above object, the invention provides a kind of heat-exchange apparatus of using the oval heat exchanger tube of spiral, comprise tube bundle at least, described tube bundle is provided with tube sheet, is equipped with the oval heat exchanger tube of many spirals in the described tube sheet; The oval heat exchanger tube of described spiral comprises body at least, and described body surrounds and forms a medium channel; Second end that described body has oval cross section and a described body reverses a set angle and forms the spirality tube wall around first end of the described relatively body of axis of described body.
Preferably, described oval cross section is divided into two side heat transfer zone and a middle heat transfer zone with described medium channel.
Preferably, the cross-sectional area of two described side heat transfer zone is roughly the same with the cross-sectional area of described middle heat transfer zone respectively.
Preferably, the two ends of the oval heat exchanger tube of described spiral are straight length.
Preferably, the heat-exchange apparatus of the oval heat exchanger tube of described application spiral is a movable tube sheets heat exchanger.
Preferably, the heat-exchange apparatus of the oval heat exchanger tube of described application spiral is vertical tube plate type heat exchanger or horizontal tube-sheet heat exchanger.
Preferably, the heat-exchange apparatus of the oval heat exchanger tube of described application spiral is a U type pipe heat exchanger.
Preferably, the heat-exchange apparatus of the oval heat exchanger tube of described application spiral is a stuffing-box bivalve pass heat exchanger.
Preferably, the heat-exchange apparatus of the oval heat exchanger tube of described application spiral is a kettle type reboiler.
Preferably, the heat-exchange apparatus of the oval heat exchanger tube of described application spiral is a stuffing-box shunting heat exchanger.
The heat-exchange apparatus of the oval heat exchanger tube of application spiral of the present invention has improved the heat exchange efficiency of middle heat transfer zone greatly owing to adopted the oval heat exchanger tube of spiral, will be much higher than existing heat-exchange apparatus on the whole heat exchange efficiency of heat-exchange apparatus.
Especially, the oval heat exchanger tube of the spiral that the present invention adopts also forms the spirality tube wall by 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 has different heat exchange efficiencies with the minor axis zone, during the body internal flow of the heat exchanger tube that adopts in the present invention when heat transferring medium, 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.
The present invention also adopts the raw material of welded tube as core component----heat exchanger 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 present invention has reduced the manufacturing cost of heat-exchange apparatus significantly.
And, the heat-exchange apparatus of the oval heat exchanger tube of application spiral of the present invention is because heat exchanger tube can also have straight length, when making heat-exchange apparatus, the straight length of heat exchanger tube and the good sealing effect of tube sheet, be more suitable for the manufacturing technology of existing heat-exchange apparatus, be much higher than existing heat-exchange apparatus in its projected life and service life.
The oval heat exchanger tube of the spiral that the present invention uses is more suitable for traditional hot switching equipment manufacturing process, and it both is connected with tube sheet that expansible pastes, also can weld, but the while also expanded and welded tube joint be used in combination.
The heat-exchange apparatus of the oval heat exchanger tube of application spiral of the present invention has simple in structurely, and cost is low, makes beneficial effects such as facility, is applicable in the multiple industries such as oil, chemical industry, chemical fertilizer, boiler, pharmacy, food, electric power, nuclear energy, environmental protection, heat supply.
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 broken section structural representation of the embodiment 1 of heat-exchange apparatus of the present invention;
Fig. 6 is the cross-sectional structure schematic diagram of the oval heat exchanger tube of a kind of spiral in embodiment illustrated in fig. 5;
Fig. 7 is a left TV structure schematic diagram embodiment illustrated in fig. 5;
Fig. 8 is the broken section structural representation of the embodiment 2 of heat-exchange apparatus of the present invention;
Fig. 9 is the broken section structural representation of the embodiment 3 of heat-exchange apparatus of the present invention;
Figure 10 is the broken section structural representation of the embodiment 4 of heat-exchange apparatus of the present invention;
Figure 11 is the broken section structural representation of the embodiment 5 of heat-exchange apparatus of the present invention;
Figure 12 is the broken section structural representation of the embodiment 6 of heat-exchange apparatus of the present invention.
The specific embodiment
Be described further below with reference to the technique effect of accompanying drawing, to understand purpose of the present invention, feature and effect fully design of the present invention, concrete structure and generation.
Embodiment 1:
As shown in Figure 5, the heat-exchange apparatus of the oval heat exchanger tube of the application spiral of present embodiment is a movable tube sheets heat exchanger, mainly comprises tube bundle 3, and tube bundle 3 is provided with tube sheet 2, is equipped with the oval heat exchanger tube 1 of many spirals in the tube sheet 2.
As Fig. 6, shown in Figure 7, the oval heat exchanger tube 1 of spiral of the present invention is one to have the metal welded tube of certain-length, as austenitic stainless steel welded tube, carbon steel welded tube, titanium or titanium alloy welded tube, nickel and nickel alloy welded tube, or austenite one ferrite dual phase steel welded tube etc.
The inner surface of body 2 is oval smooth surface, and outer surface is a spirality.
The inside of body 2 forms the medium channel of heat transferring medium circulation.
Second end 22 of body 2 reverses a set angle around first end 21 of the relative body 2 of axis of body 2, and forms the spirality tube wall.
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 limitation of the invention.The size of this set angle also can be relevant with the flowability of heat transferring medium.
Herein, 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 the continuous cold rolling machined surfaces that adopt press process technology to form by the metal welded tube of a circle, and inside is ellipse.
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.
From shape of cross section, present embodiment middle tube body 2 is when doing heat exchange, the heat exchange efficiency of two side heat transfer zone 31 and a middle heat transfer zone 32 is all than higher, heat transferring medium particularly in the heat transfer zone 32 also participates in the heat transfer process fully, has improved the heat exchange efficiency of the oval heat exchanger tube 1 of spiral widely.
As the body in the present embodiment 2, adopt the beneficial effect of oval cross section to be, not only can improve the heat exchange area of the oval heat exchanger tube 1 of spiral significantly, 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 stress of the oval heat exchanger tube 1 of spiral under the heat transferring medium effect, strengthened the rigidity of body 2.
Especially, the oval heat exchanger tube of the spiral that the present invention adopts, also first end 21 that centers on the relative body 2 of axis of body 2 by second end 22 with body 2 reverses a set angle and forms the spirality tube wall.Because oval-shaped major axis zone has different heat exchange efficiencies with the minor axis zone, during body 2 internal flows of the heat exchanger tube that adopts in the present invention when heat transferring medium, because the above-mentioned special shape of body 2, heat transferring medium has a flow trace that rolls when moving ahead in body 2, 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.
The oval heat exchanger tube of spiral among the present invention is not also owing to have cold working after the tubulation moulding, so internal structure stress eliminates substantially, and anti-fouling tendency, corrosion resistance are better.
The present invention also has simple in structure, and cost is low, makes more beneficial effect such as facility.
Heat exchanger tube of the prior art has particular external surface shape (such as spiral, T groove, ripple) mostly, and when making heat exchange equipment, being connected of heat exchanger tube of the prior art and tube sheet must the increase linkage section; The gap is bigger between heat exchanger tube and the deflection plate, and stationarity is poor.And the oval heat exchanger tube of the spiral among the present invention has smooth outer surface, is more suitable for the manufacturing technology of traditional heat exchangers, is much higher than existing four big class heat exchanger tubes in its projected life and service life.
According to client's needs, the entire length of the oval heat exchanger tube of the spiral among the present invention can be chosen between tens of rice at 0 meter.Certainly, if the reasonable disposition heat-treatment furnace, the entire length of the oval heat exchanger tube of spiral among the present invention can also be in random length, and is not subject to the specification of cold working equipment.
Heat-exchange apparatus of the present invention can also adopt the oval heat exchanger tube of the spiral that has straight length, has corresponding beneficial effect.
Embodiment 2:
As shown in Figure 8, the heat-exchange apparatus of the oval heat exchanger tube of the application spiral of present embodiment is the vertical tube plate type heat exchanger, mainly comprises tube bundle 3, tube sheet 2, and the oval heat exchanger tube 1 of the spiral among employing the present invention.Heat-exchange apparatus of the present invention also can be horizontal tube-sheet heat exchanger in other embodiments.
Embodiment 3:
As shown in Figure 9, the heat-exchange apparatus of the oval heat exchanger tube of the application spiral of present embodiment is a U type pipe heat exchanger, mainly comprises tube bundle 3, and tube sheet 2 adopts the oval heat exchanger tube 1 of spiral among the present invention.
Embodiment 4:
As shown in figure 10, the heat-exchange apparatus of the oval heat exchanger tube of the application spiral of present embodiment is a stuffing-box bivalve pass heat exchanger, mainly comprises tube bundle 3, and tube sheet 2 adopts the oval heat exchanger tube 1 of spiral among the present invention.
Embodiment 5:
As shown in figure 11, the heat-exchange apparatus of the oval heat exchanger tube of the application spiral of present embodiment is a kettle type reboiler, mainly comprises tube bundle 3, and tube sheet 2 adopts the oval heat exchanger tube 1 of spiral among the present invention.
Embodiment 6:
As shown in figure 12, the heat-exchange apparatus of the oval heat exchanger tube of the application spiral of present embodiment is a stuffing-box shunting heat exchanger, mainly comprises tube bundle 3, and tube sheet 2 adopts the oval heat exchanger tube 1 of spiral among the present invention.
A kind of heat transferring medium that only circulates in the heat-exchange apparatus of the oval heat exchanger tubes of above-mentioned various application spirals of the present invention, with other outer Medium Exchange heats of heat-exchange apparatus.
The oval heat exchanger tube of the spiral that the present invention uses is compared with other structure heat exchanger tubes of equivalent diameter in the prior art, though cross-sectional area is identical, but its heat exchange area increases several times, has improved the heat exchange efficiency in the heat exchange zone greatly, has further reduced the energy consumption of heat-exchange apparatus.
The heat-exchange apparatus of the oval heat exchanger tube of application spiral of the present invention is owing to adopted the oval heat exchanger tube of spiral, compare with the heat-exchange apparatus that screwed pipe (special type pipe such as integral low-finned tube) that former Machinery Ministry and China Petroleum Chemicals Corporation are recommended constitutes, have following some advantage:
The internal surface area of the oval heat exchanger tube of the spiral that the present invention uses is than more than the big several times of screwed pipe, and overall heat-transfer coefficient can reach the multiple level and improve.Therefore, when the structural design of heat-exchange apparatus, can reduce heat transfer area, reach and reduce, reduce the effect of heat-exchange apparatus cost with pipe quantity.
The oval heat exchanger tube of the spiral that the present invention uses is compared with screwed pipe of the prior art, need not to increase linkage section, and good rigidly, the poling of heat exchanger tube are easy, easily manufactured, and these factors have been optimized the performance of heat-exchange apparatus of the present invention.
The oval heat exchanger tube of the spiral that the present invention uses is compared with screwed pipe of the prior art, better with the suitability of deflection plate, its pipe thickness is even, the outside dimension standard, the puzzlement effective with the clearance control of deflection plate, tube sheet, that heat-exchange apparatus long-time running of the present invention is not vibrated.
The oval heat exchanger tube of the spiral that the present invention uses, its smooth surface, less scaling, the anti-tartar performance is good, therefore heat-exchange apparatus of the present invention also have less scaling, the characteristics that the anti-tartar performance is good.
The oval heat exchanger tube of the spiral that the present invention uses, because of the residual stress after the no cold working, its corrosion resistance is better than screwed pipe of the prior art greatly, and therefore the corrosion resistance of heat-exchange apparatus of the present invention is greatly improved.Particularly, can not use existing screwed pipe because of there being rolling stress in the application scenario that stress corrosion is arranged.
The oval heat exchanger tube of the spiral that the present invention uses, can be widely used in all kinds, various forms of heat-exchange apparatus, and screwed pipe of the prior art is in some occasion, its application is restricted, occasion as the heat transfer of enhanced tube condensed exterior, screwed pipe just can not be used for vertical (type) condenser, otherwise, just do not have the effect of enforcing condensation.Occasion that vibration equipment is bigger or the like and for example.Therefore heat-exchange apparatus of the present invention has widely used beneficial effect.
In sum, described in this specification is several preferred embodiment of the present invention, and above embodiment is only unrestricted in order to technical scheme of the present invention to be described.All technical staff in the art all should be within claim protection domain of the present invention under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (10)
1. a heat-exchange apparatus of using the oval heat exchanger tube of spiral comprises tube bundle at least, and described tube bundle is provided with tube sheet, it is characterized in that: be equipped with the oval heat exchanger tube of many spirals in the described tube sheet; The oval heat exchanger tube of described spiral comprises body at least, and described body surrounds and forms a medium channel; Second end that described body has oval cross section and a described body reverses a set angle and forms the spirality tube wall around first end of the described relatively body of axis of described body.
2. heat-exchange apparatus as claimed in claim 1 is characterized in that: described oval cross section is divided into two side heat transfer zone and a middle heat transfer zone with described medium channel.
3. heat-exchange apparatus as claimed in claim 2 is characterized in that: the cross-sectional area of two described side heat transfer zone is roughly the same with the cross-sectional area of described middle heat transfer zone respectively.
4. as the arbitrary described heat-exchange apparatus of claim 1 to 3, it is characterized in that: the two ends of the oval heat exchanger tube of described spiral are straight length.
5. heat-exchange apparatus as claimed in claim 1 is characterized in that: described heat-exchange apparatus is a movable tube sheets heat exchanger.
6. heat-exchange apparatus as claimed in claim 1 is characterized in that: described heat-exchange apparatus is vertical tube plate type heat exchanger or horizontal tube-sheet heat exchanger.
7. heat-exchange apparatus as claimed in claim 1 is characterized in that: described heat-exchange apparatus is a U type pipe heat exchanger.
8. heat-exchange apparatus as claimed in claim 1 is characterized in that: described heat-exchange apparatus is a stuffing-box bivalve pass heat exchanger.
9. heat-exchange apparatus as claimed in claim 1 is characterized in that: described heat-exchange apparatus is a kettle type reboiler.
10. heat-exchange apparatus as claimed in claim 1 is characterized in that: described heat-exchange apparatus is a stuffing-box shunting heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101527507A CN102297621A (en) | 2011-06-08 | 2011-06-08 | Heat exchange device applying spiral elliptical heat exchange tubes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101527507A CN102297621A (en) | 2011-06-08 | 2011-06-08 | Heat exchange device applying spiral elliptical heat exchange tubes |
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| CN102297621A true CN102297621A (en) | 2011-12-28 |
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| CN2011101527507A Pending CN102297621A (en) | 2011-06-08 | 2011-06-08 | Heat exchange device applying spiral elliptical heat exchange tubes |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1322064A1 (en) * | 1986-02-28 | 1987-07-07 | Предприятие П/Я Г-4461 | Shell-and-tube heat exchanger |
| CN2754038Y (en) * | 2004-06-12 | 2006-01-25 | 辽宁石油化工大学 | Twist flat-tube heat exchanger |
-
2011
- 2011-06-08 CN CN2011101527507A patent/CN102297621A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1322064A1 (en) * | 1986-02-28 | 1987-07-07 | Предприятие П/Я Г-4461 | Shell-and-tube heat exchanger |
| CN2754038Y (en) * | 2004-06-12 | 2006-01-25 | 辽宁石油化工大学 | Twist flat-tube heat exchanger |
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Application publication date: 20111228 |