CN102032837A - Self-cleaning enhanced heat-transfer magnetic suspension spiral twisted tape in heat-transfer tube - Google Patents
Self-cleaning enhanced heat-transfer magnetic suspension spiral twisted tape in heat-transfer tube Download PDFInfo
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- CN102032837A CN102032837A CN2009100933737A CN200910093373A CN102032837A CN 102032837 A CN102032837 A CN 102032837A CN 2009100933737 A CN2009100933737 A CN 2009100933737A CN 200910093373 A CN200910093373 A CN 200910093373A CN 102032837 A CN102032837 A CN 102032837A
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Abstract
The invention relates to a magnetic suspension spiral twisted tape which comprises a spiral twisted tape and an axial locating device, wherein, the axial locating device is composed of a support frame and a magnet locating device; the magnet locating device is composed of a central conical magnet and an external conical sleeve magnet; the support frame is fixedly arranged on the liquid-inlet end of a heat-transfer tube; the external conical sleeve magnet is fixed with the support frame; the polarity of the central conical magnet is the same as that of the external conical sleeve magnet; one end of the spiral twisted tape is equipped with a pivot, and the pivot passes through the support frame and the external conical sleeve magnet; and the central conical magnet is fixed on the pivot. The magnetic suspension spiral twisted tape has the advantages that by adopting a magnetic suspension locating mode, the problem of severe wear caused by great contact force at a locating position of a liquid inlet is solved, and the service life of an axial locating element of the spiral twisted tape is prolonged; by utilizing a reinforced framework axis core, the strength of the spiral twisted tape can be enhanced; by means of a guide structure, the scraping action of the spiral twisted tape on a tube wall is reduced; and by means of a flow guide structure, fluid flow is further disturbed, the radial flow intensity and turbulent flow intensity of fluid are enhanced, and convective heat transfer is strengthened.
Description
Technical field
The present invention relates to a kind of interior inserted component that is applied to antifouling scale removal and augmentation of heat transfer in the heat-transfer pipe in the heat-transfer equipments such as shell-and-tube heat exchanger, heat exchange reactor, particularly relate to a kind of twisted strip that utilizes the heat-transfer pipe inner fluid as cleaning and heat-transfer enhancing in the heat-transfer pipe of power.
Background technology
All to be applied to heat-transfer equipments such as a large amount of heat exchangers, heat exchange reactor in fields such as thermoelectricity, nuclear power, oil, chemical industry, metallurgy, food, pharmacy, light industry, ship power and Aero-Space, but the problem ubiquity of heat transfer pipe inwall contamination fouling, make heat transfer property reduce variation, the fluid transporting resistance increases simultaneously, even causes line clogging; The tube wall dirt not only can bring the potential safety hazard of corrosion leakage, and causes severe energy waste because of heat transfer efficiency reduces significantly, therefore need periodically take the passive measure that stops production and clean usually; For this reason, people are studying the online automatic antifouling scale removal that need not shut down of invention and the method and apparatus of augmentation of heat transfer always for many years.In numerous antifouling descaling methods, the twisted strip method is a kind of method of utilizing fluid dynamic energy to realize online automatic desludging and augmentation of heat transfer, U.S. Pat 4174750 and Chinese patent literature CN2214239Y disclose the cleaning device in a kind of heat-transfer pipe, and it comprises rotation cleaning element twisted strip in heat-transfer pipe, the pipe, the twisted strip fixture at the liquid feeding end of heat-transfer pipe.The dirt of sweeping inside pipe wall is scraped in twisted strip rotation under the drive of intraductal heat transfer fluid, has function online, automatic, the continuous wash antiscale; Flow because the guide functions of twisted strip makes liquid make helix, tube fluid is flowed a perturbation action, and intraductal heat transfer is strengthened.The major defect of twisted strip is: 1) the end rolling bearing life-span is short; 2) there is serious scraped finish in twisted strip to the heat-transfer pipe inwall; 3) need bigger driving moment in the course of work; 4) a cooperative reinforcing heat-transfer effect is not remarkable.
Summary of the invention
The objective of the invention is to design the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe, when keeping self-cleaning performance, further augmentation of heat transfer, improve the life-span of liquid inlet axial direction positioning device, reduce the serious scraping wearing and tearing of twisted strip, strengthened the intensity of twisted strip simultaneously tube wall.
The technical scheme that the present invention addresses the above problem employing is: the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe, it comprises twisted strip and axial direction positioning device, axial direction positioning device is combined by bracing frame and magnet positioner, the magnet positioner is made up of heart portion taper magnet and outside taper sheath magnet, support frame as described above is fixedly mounted on the liquid inlet of heat-transfer pipe, outside taper sheath magnet and bracing frame are fixed, the polarity of heart portion taper magnet is identical with the polarity of outside taper sheath magnet, twisted strip one end is provided with mandrel, mandrel passes bracing frame, outside taper sheath magnet, heart portion taper magnet is fixed on the mandrel.
The magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention, its twisted strip pivot axially can be embedded with and strengthen skeleton axis core, strengthen skeleton axis core and stretch out the part of twisted strip as mandrel.
The magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention, the enhancing skeleton axis core of described twisted strip can be solid wireline, steel wire rope, plastic ties or fibre reinforced plastics rope.
The magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention, described twisted strip and bracing frame can be made by pottery, metal, macromolecular material or polymer-based composite.
The magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention, heart portion taper magnet with the fixed form of mandrel be rivet, hinged, adhesion or be threaded.
The magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention, the edge of twisted strip is processed into guide frame, guide frame can be chamfering or circular arc, during the twisted strip rotation, and the such wedge structure of similar sliding bearing that guide frame and heat-transfer pipe tube wall form.
The magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention, it is isometrical to flow-guiding structure that the twisted strip surface is provided with projection, groove or through hole.
The invention has the beneficial effects as follows: 1, the fixing magnetic suspension mode that adopts in twisted strip liquid inlet place, magnetic suspension structure is a conical form, magnetic force shows as one and axially makes a concerted effort, thereby axially make a concerted effort to form counter-force twisted strip is carried out axial location with the twisted strip axial tension, conical form makes heart portion taper magnet, strengthening skeleton axis core does not directly contact with bracing frame, reduced the rotational resistance of twisted strip, solved the problem of the serious wear that causes greatly because of contact force at place, twisted strip liquid inlet location, service life of having improved existing twisted strip liquid inlet positioner; 2, the edge of twisted strip is processed into guide frame, makes twisted strip contact with tube wall to wedge shape or camber line seamlessly transit, and when guaranteeing the inhibition and cleaning effect of twisted strip to dirt deposition, has reduced the scraping effect of twisted strip to tube wall; 3, flowing of the further disturbance fluid of flow-guiding structure increases the radial flow and the turbulivity of fluid, promotes the mixing of main fluid and boundary layer fluid, a synergy augmentation of heat transfer better effects if; 4, the twisted strip pivot axially has the skeleton of enhancing axis core, has improved the intensity of twisted strip.
During the heat-transfer equipment operation, hydraulic fluid enters heat-transfer pipe through bracing frame, promotes the twisted strip rotation, thereby heat-transfer pipe inwall bur is cleaned; Medium flow field in managing is carried out disturbance, be formed with the turbulent flow that is beneficial to augmentation of heat transfer, break and encircled the liquid boundary layer, suppressed the condition that dirt forms.According to the practical application needs, also can on twisted strip, process radially flow-guiding structure, thereby flowing of further disturbance fluid increases the radial flow and the turbulivity of fluid, improves augmentation of heat transfer.
Description of drawings
Fig. 1 is the structural representation of the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention.
Fig. 2 is the cross section structure schematic diagram of the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention.
Fig. 3 is the axial direction positioning device structural representation of the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe.
Fig. 4 is the right TV structure schematic diagram of Fig. 3.
Fig. 5 is one of twisted strip sectional view of the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention (strengthening skeleton axis core diameter less than twisted strip thickness).
Fig. 6 is two (strengthening skeleton axis core diameter greater than twisted strip thickness) of the twisted strip sectional view of the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention.
Fig. 7 is three (strengthen skeleton axis core diameter and equal twisted strip thickness) of the twisted strip sectional view of the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention.
Fig. 8 is provided with the twisted strip structural representation of flow-guiding structure for the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention.
Fig. 9 is provided with the expanded view of the twisted strip of flow-guiding structure for the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe of the present invention
Among the figure, 1 mandrel, 2 spacing rivets, 3-1 heart portion taper magnet, the outside taper sheath magnet of 3-2,4 bracing frames, 5 heat-transfer pipes, 6 twisted strips, 7 guide frames, 8 groove flow-guiding structures.
The specific embodiment
Extremely shown in Figure 9 as Fig. 1, a kind of embodiment of the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in the heat-transfer pipe that the present invention relates to, it comprises twisted strip 6 and axial direction positioning device, described twisted strip 6 pivots axially have the skeleton of enhancing axis core, strengthening the part that skeleton axis core stretches out twisted strip is mandrel 1, strengthen skeleton axis core diameter can less than, more than or equal to the thickness of twisted strip.Described axial direction positioning device is fixed on the liquid inlet of heat-transfer pipe 5, combine by bracing frame 4 and magnet positioner, described magnet positioner is the circular cone fit form, be made up of taper magnet 3-1 of heart portion and outside taper sheath magnet 3-2, taper magnet 3-1 of heart portion and outside taper sheath magnet 3-2 are all the S utmost point or are all the N utmost point.Spacing rivet 2 is made of a major part groove and hollow small cylinder, it is fixing that the taper magnet 3-1 of heart portion is embedded in the major part groove chucking of spacing rivet 2, outside taper sheath magnet 3-2 and bracing frame 4 are fixing, the hollow small cylinder of spacing rivet compresses spacing on mandrel 1 one ends, mandrel 1 passes spacing rivet 2, magnet positioner and bracing frame, and the other end is connected with twisted strip 6.
The edge of twisted strip 6 is processed into guide frame 7, as shown in Figure 2; Being processed with groove flow-guiding structure 8 on the twisted strip 6, except that the groove flow-guiding structure, can also be projection or through hole flow-guiding structure, as Fig. 8 and shown in Figure 9.
Among the present invention, the external diameter of twisted strip 6 is slightly less than the internal diameter of heat-transfer pipe 5, and the external diameter of mandrel 1 is slightly less than the internal orifice dimension of spacing rivet 2, the taper magnet 3-1 of heart portion and outside taper sheath magnet; Outside taper sheath magnet 3-2 is 45 ° with the coning angle that the taper magnet 3-1 of heart portion cooperates, the magnetic force that relies on same polarity to repel mutually carries out axially and location radially, make the taper magnet 3-1 of heart portion, mandrel 1 directly not contact with bracing frame 4, reduced the rotational resistance of twisted strip 6, solved the problem of the serious wear that causes greatly because of contact force at place, twisted strip 6 liquid inlet location, the service life of having improved existing twisted strip liquid inlet positioner; Twisted strip 6 edges and heat-transfer pipe 5 inwalls constituted the such wedge structure of sliding bearing when the chamfering at twisted strip edge or circular arc etc. rotatablely moved it as guide frame 7, see shown in Figure 2, the arrow indication is the rotation direction of twisted strip 6, the illustrated tapered region of the marginal existence of twisted strip 6, in the inhibition and cleaning effect that guarantee 6 pairs of dirt depositions of twisted strip, reduced the scraping effect of 6 pairs of heat-transfer pipe 5 tube walls of twisted strip; Flowing of groove flow-guiding structure 8 further disturbance fluids on the twisted strip 6 increases the radial flow and the turbulivity of fluid, promotes the mixing of main fluid and boundary layer fluid, strengthens convection heat transfer' heat-transfer by convection.
Claims (7)
1. the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in the heat-transfer pipe, comprise twisted strip and axial direction positioning device, it is characterized in that: axial direction positioning device is combined by bracing frame and magnet positioner, the magnet positioner is made up of heart portion taper magnet and outside taper sheath magnet, support frame as described above is fixed on the liquid inlet of heat-transfer pipe, outside taper sheath magnet and bracing frame are fixed, the polarity of heart portion taper magnet is identical with the polarity of outside taper sheath magnet, twisted strip one end is provided with mandrel, mandrel passes bracing frame, outside taper sheath magnet, heart portion taper magnet is fixed on the mandrel.
2. the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe according to claim 1 is characterized in that: the twisted strip pivot axially is embedded with and strengthens skeleton axis core, strengthens skeleton axis core and stretches out the part of twisted strip as mandrel.
3. the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe according to claim 2, it is characterized in that: the enhancing skeleton axis core of described twisted strip is solid wireline, steel wire rope, plastic ties or fibre reinforced plastics rope.
4. the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe according to claim 1 and 2 is characterized in that: described twisted strip and/or bracing frame are made by pottery, metal, macromolecular material or polymer-based composite.
5. the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe according to claim 1 and 2 is characterized in that: heart portion taper magnet with the fixed form of mandrel be rivet, hinged, adhesion or be threaded.
6. the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe according to claim 1 and 2, it is characterized in that: the edge of twisted strip is processed into guide frame.
7. the magnetic suspension twisted strip of cleaning and heat-transfer enhancing in a kind of heat-transfer pipe according to claim 6, it is characterized in that: the twisted strip surface is provided with projection, groove or through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100933737A CN102032837A (en) | 2009-09-29 | 2009-09-29 | Self-cleaning enhanced heat-transfer magnetic suspension spiral twisted tape in heat-transfer tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100933737A CN102032837A (en) | 2009-09-29 | 2009-09-29 | Self-cleaning enhanced heat-transfer magnetic suspension spiral twisted tape in heat-transfer tube |
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| CN102032837A true CN102032837A (en) | 2011-04-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819529A (en) * | 2015-03-30 | 2015-08-05 | 四川远畅新能源科技有限公司 | Communication machine room energy-saving cooling system having pre-humidifying and cooling structure |
| CN108204766A (en) * | 2017-12-21 | 2018-06-26 | 杭州师范大学钱江学院 | Self cleaning method in a kind of heat exchanger tube and pipe of carrying magnetic torsion bar |
| CN113757755A (en) * | 2021-08-03 | 2021-12-07 | 孟祥磊 | Turbulence-increasing type central heating circulating water pipeline |
| CN113932633A (en) * | 2020-07-13 | 2022-01-14 | 江苏集萃冶金技术研究院有限公司 | Powder material spiral heat exchanger |
| CN114362394A (en) * | 2021-12-03 | 2022-04-15 | 中车永济电机有限公司 | Stator core capable of enhancing heat transfer |
-
2009
- 2009-09-29 CN CN2009100933737A patent/CN102032837A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819529A (en) * | 2015-03-30 | 2015-08-05 | 四川远畅新能源科技有限公司 | Communication machine room energy-saving cooling system having pre-humidifying and cooling structure |
| CN108204766A (en) * | 2017-12-21 | 2018-06-26 | 杭州师范大学钱江学院 | Self cleaning method in a kind of heat exchanger tube and pipe of carrying magnetic torsion bar |
| CN108204766B (en) * | 2017-12-21 | 2020-06-30 | 杭州师范大学钱江学院 | Heat exchange tube with magnetic torsion bars and self-cleaning method in heat exchange tube |
| CN113932633A (en) * | 2020-07-13 | 2022-01-14 | 江苏集萃冶金技术研究院有限公司 | Powder material spiral heat exchanger |
| CN113932633B (en) * | 2020-07-13 | 2024-03-26 | 江苏集萃冶金技术研究院有限公司 | Powder material spiral heat exchanger |
| CN113757755A (en) * | 2021-08-03 | 2021-12-07 | 孟祥磊 | Turbulence-increasing type central heating circulating water pipeline |
| CN113757755B (en) * | 2021-08-03 | 2023-09-15 | 大唐保定供热有限责任公司 | Turbulent flow type central heating circulating water pipeline |
| CN114362394A (en) * | 2021-12-03 | 2022-04-15 | 中车永济电机有限公司 | Stator core capable of enhancing heat transfer |
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Application publication date: 20110427 |