CN105135933A - Shuttle-shaped heat transfer enhancement rotor in heat exchange tube - Google Patents
Shuttle-shaped heat transfer enhancement rotor in heat exchange tube Download PDFInfo
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- CN105135933A CN105135933A CN201510656181.8A CN201510656181A CN105135933A CN 105135933 A CN105135933 A CN 105135933A CN 201510656181 A CN201510656181 A CN 201510656181A CN 105135933 A CN105135933 A CN 105135933A
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- hollow shaft
- rotor
- heat exchange
- heat exchanger
- exchanger tube
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Abstract
The invention relates to a shuttle-shaped heat transfer enhancement rotor in a heat exchange tube. The rotor mainly comprises a hollow shaft and two or more spiral blades; the rotor is in a shuttle-shaped structure when being looked at from the axial direction of the heat exchange tube; the hollow shaft comprises two sections; the two or more spiral blades are arranged on the hollow shaft and are arranged at equal intervals along the circumference direction of the hollow shaft; the surfaces of the spiral blades are smooth; the spiral blades are intersected with the outer surface of the hollow shaft; the outer diameters of the spiral blades are slightly less than the inner diameter of the heat exchange tube; the thicknesses of the spiral blades are not changed; the widths of the spiral blades are in a gradually-changed state, and the widths are most when the spiral blades close to the hollow shaft and then are reduced. The rotor disclosed by the invention is large in occupying space and low in flow resistance in the heat exchange tube, and is simple in structure; fluid in the heat exchange tube is vertical to action force, in the radiation direction, of the spiral blades, so that a rotor body rotates rough the hollow shaft, the turbulence intensity of the fluid is enhanced, the flowing state of the fluid in a near-wall area is broken, the boundary layer thickness is reduced, a slight scraping effect on the tube wall is played, and aims of heat transfer enhancement and scale prevention and removing are realized.
Description
Technical field
The present invention relates to a kind of interior inserted component being applied to augmentation of heat transfer and antiscaling, descaling in heat exchanger tube in the equipment such as shell-and-tube heat exchanger, heat exchange reactor, in particular to one with heat exchanger tube internal heat transfer fluid for power, realize the shuttle rotor of cleaning and heat-transfer enhancing function.
Background technology
The important lifeblood that the energy develops as Chinese national economy, there is in short supply and that utilization ratio is low problem in it, therefore, energy-saving and emission-reduction are most important for China's sustainable economic development simultaneously.Shell-and-tube heat exchanger is widely used in the fields such as thermoelectricity, nuclear power, oil, chemical industry, metallurgy, food, light industry, ship power and Aero-Space, but the problem of shell-and-tube heat exchanger ubiquity heat transfer pipe inwall contamination fouling, intraductal heat exchange efficiency is caused significantly to reduce, heat transfer property is reduced, fluid transporting resistance increases simultaneously, and even in pipe, Severe blockage cannot use.Traditional processing method is the cleaning that stops production, and has not only stopped over the manufacturing schedule of factory, also needs to pay expensive cleaning charge and uses.Therefore, people study way and the device of on-line automatic augmentation of heat transfer that employing do not stop production and descaling and antiscaling always, and its great advantage is the manufacture not being only applicable to new type heat exchanger, is also suitable for the transformation of old heat exchanger, and convenient processing and manufacture.
There is the method and apparatus of many enhanced heat exchanges and antiscaling, descaling in recent years, Chinese Patent Application No. is the innovation and creation that ZL95236063.2 discloses that denomination of invention is the cleaning device of descaling and antiscaling " in the heat-transfer pipe ", Chinese Patent Application No. is the innovation and creation that CN1424554 discloses that denomination of invention is " the spiral enhanced heat exchange of flow-disturbing and automatic descaling apparatus ", these devices mainly include spiral band, fixed mount, spiral band is arranged in helix tube, utilizes and drives spiral band to rotate by the flowing of heat exchanger tube inner fluid.These devices play a role to enhanced heat exchange and antiscaling, descaling, but also have the following disadvantages simultaneously: (1) tie is an entirety, directly swipes to heat-transfer pipe, damage heat exchanger tube inwall; (2) promote tie during fluid flowing and rotate the larger driving moment of needs, consume more fluid dynamic energy; (3) service life of single-ended fixing bearing is short.China Patent No. is ZL200520127121.9, and disclose the patent application that denomination of invention is " rotator type cleaning and heat-transfer enhancing device ", this device is made up of fixed mount, rotor, flexible shaft and stay pipe, and two fixed mounts are separately fixed at the two ends of heat exchanger tube; The outer surface of rotor has scroll, and rotor has centre bore; Bracing frame is located between rotor and fixed mount, and flexible shaft is fixed on two fixed mounts through the centre bore of rotor and stay pipe.Under tube fluid effect, rotor rotates around flexible shaft, and rotor blade produces slight scraping to tube wall, plays the effect of antiscaling, descaling, and in addition, rotor turns carries out disturbance to tube fluid, enhance fluid turbulent extent, and then the effect playing enhanced heat exchange.The level of disruption of the above rotor to fluid is limited, and the rotary speed of rotor is determined by the lead angle of spiral shell rib, fast in the rotary speed of spiral shell rib helical pitch hour rotor, increases the resistance of fluid simultaneously thereupon.For head it off, Chinese Patent Application No. 200910077378.0, denomination of invention is " a kind of unit-combination type heat transfer enhancement device ", this device is by rotor, bracing frame, sleeve be connected axis form, bracing frame is fixed on heat-transfer pipe two ends, the two ends connecting axis are separately fixed on bracing frame, multiple rotor is installed on and connects on axis, rotor is by flow-disturbing vane, hinge hinge structure, afterbody screw drives blade forms, this structure significantly can reduce the flow resistance of tube fluid, reduce abrasion, the service life of Extending Rotor, but this construction rotor can not better suppress fouling, heat transfer efficiency and on-line cleaning effect do not reach best.
Summary of the invention
The object of the invention is the rotor designing a kind of new construction, this rotor is seen as fusiformis structure from heat exchanger tube axial direction, its blade presents spiral gradient shape, whole surface area is less, significantly can reduce the flow resistance of medium in pipe, save cost of manufacture and be convenient to install, there is automatic on-line antiscaling, descaling and augmentation of heat transfer dual-use function.
For achieving the above object, the technical scheme that the present invention proposes is: enhanced heat exchange shuttle rotor in heat exchanger tube, is characterized in that: critical piece comprises hollow shaft and helical blade; This rotor is axially seen as fusiformis structure from heat exchanger tube, and described hollow shaft forms by two sections, hollow shaft is provided with two or more helical blades, and helical blade divides arrangement along the circumference etc. of hollow shaft; Helical blade surface is smooth, and helical blade is crossing with hollow shaft outer surface, and helical blade external diameter is slightly less than heat exchanger tube internal diameter; The thickness of helical blade keeps certain, and width is grading profile, and when near hollow shaft, width is maximum, then reduces gradually; The space of rotor of the present invention occupied by heat exchanger tube is little, flow resistance is little, structure is simple, heat exchanger tube inner fluid makes rotor rotate around hollow shaft perpendicular to the active force of helical blade radial direction, enhance the turbulence intensity of fluid, destroy the flow regime of near-wall region fluid, be thinned boundary layer thickness, and slight scraping action is played to tube wall, reach the object of augmentation of heat transfer and antiscaling, descaling.
In heat exchanger tube of the present invention, enhanced heat exchange shuttle rotor, is characterized in that, described helical blade and hollow shaft are formed by macromolecular material, polymer-based composite, metal or ceramic material.
Enhanced heat exchange shuttle rotor in heat exchanger tube of the present invention, it is characterized in that, there is coaxial configuration at hollow shaft two ends, and the afterbody centering of the head of the hollow shaft of each rotor and the hollow shaft of previous rotor also coordinates, and coaxial configuration can be nest ball, universal joint or buckle.
In heat exchanger tube of the present invention, enhanced heat exchange shuttle rotor, is characterized in that, it is elliptic arc or circular curve that helical blade projects on axial cross section, and helical blade root is crossing with hollow shaft outer surface.
In heat exchanger tube of the present invention, the enhanced heat exchange shuttle rotor whole string that can join end to end is threaded onto and connects on axis, connect the pole that axis can be rigidity, also can be flexible tightrope, also can be divided into identical or different some groups of rotor quantity by locating part, make rotor uniform rotation.
The invention has the beneficial effects as follows: the rotor whole surface area of 1, inventing is less, space occupied in heat exchanger tube is little, and save cost of manufacture and be conducive to installing, flow resistance is little, is more conducive to antifouling scale removal and augmentation of heat transfer; 2, rotor rotates under the effect of heat exchanger tube inner fluid, and fluid forms three-dimensional spiral type flow regime, enhances the turbulent extent of fluid, is more conducive to augmentation of heat transfer; 3, the helical blade of rotor heat exchanging inside pipe wall in rotary course plays slight scraping action, be thinned the thickness of fluid boundary layer, the flow regime of tube wall place fluid is damaged, heat exchanging inside pipe wall dirt is removed, decrease the deposition of dirt at heat exchanger tube inwall simultaneously, be conducive to the life cycle extending whole device, reduce cleaning frequency.
Enhanced heat exchange shuttle rotor in the heat exchanger tube that the present invention relates to, the length of its single rotor, rotate the parameters such as the angle that outside diameter and helical blade tilt, can determine according to situations such as condition of work and manufacturing cost such as velocity of medium in heat-transfer pipe internal diameter, pipe, both can take the connected mode of synchronous rotary between adjacent rotor, also can adopt the independent structure rotated separately.
Accompanying drawing explanation
Fig. 1 is enhanced heat exchange shuttle rotor structural representation in heat exchanger tube of the present invention.
Fig. 2 is Fig. 1 top view.
Fig. 3 is enhanced heat exchange shuttle rotor structure three-dimensional schematic diagram in heat exchanger tube of the present invention.
Fig. 4 is enhanced heat exchange shuttle rotor mounting structure schematic diagram in heat exchanger tube of the present invention.
In figure, 1-hollow shaft, 2-helical blade, 3-heat exchanger tube, 4-bracing frame, 5-connect axis, 6-boss, 7-groove, 8-locating part.
Detailed description of the invention
A kind of implementation method of enhanced heat exchange shuttle rotor in the heat exchanger tube that the present invention relates to, as shown in Figure 4, strengthening and heat transferring device comprises shuttle rotor, locating part 8, heat exchanger tube 3, bracing frame 4 and is connected axis 5, connect axis 5 by some rotor inlines together, multiple rotor can be divided into a few group rotor string by locating part 8, bracing frame 4 is fixed on heat exchanger tube 3 two ends, connecting the two ends of axis 5 is separately fixed on bracing frame 4, and rotor of the present invention is fixed on by some helical blades 2 that hollow shaft 1 forms on the surface.In two adjacent rotor, the boss 6 of hollow shaft 1 head of a rotor combines with the groove 7 of another rotor hollow shaft 1 afterbody, thus play connect and adjustment make it coaxial effect, coaxial configuration can be the structures such as ball-and-socket, universal joint and buckle, also can be simple planar structure for the occasion that rotor operation alignment is not high.
Enhanced heat exchange shuttle rotor in heat exchanger tube of the present invention, as shown in Figure 1 to Figure 3, hollow shaft 1 cross sectional shape of rotor is hollow cylinder; Fig. 1 is enhanced heat exchange shuttle rotor structural representation in heat exchanger tube of the present invention, hollow shaft 1 has two helical blades, 2, two helical blades 2 wait point arranged distribution in hollow shaft 1 surface circumference; Fig. 2 is enhanced heat exchange shuttle rotor structure top view in heat exchanger tube of the present invention, and the width of helical blade 2 is maximum when near hollow shaft 1, then reduces gradually; Fig. 3 is enhanced heat exchange shuttle rotor schematic three dimensional views in heat exchanger tube of the present invention.
In the present invention, fluid in heat exchanger tube 3 produces axial force and rotating torque to rotor in flow process, thus drive rotor rotates, fluid forms three-dimensional spiral type flow regime, exacerbate the turbulence intensity of fluid, destroy the flow regime of the fluid near tube wall, be thinned boundary layer thickness, and slight scraping action is served to tube wall, reach the object of augmentation of heat transfer and antiscaling, descaling thus.In addition, material and processing cost can be saved by the hollow shaft section removed between helical blade 2 or the diameter that reduces this hollow axle end.
Claims (4)
1. enhanced heat exchange shuttle rotor in heat exchanger tube, is characterized in that: critical piece comprises hollow shaft and helical blade; This rotor is axially seen as fusiformis structure from heat exchanger tube, and described hollow shaft forms by two sections, hollow shaft is provided with two or more helical blades, and helical blade divides arrangement along the circumference etc. of hollow shaft; Helical blade surface is smooth, and helical blade is crossing with hollow shaft outer surface, and helical blade external diameter is slightly less than heat exchanger tube internal diameter; The thickness of helical blade keeps certain, and width is grading profile, and when near hollow shaft, width is maximum, then reduces gradually.
2. enhanced heat exchange shuttle rotor in heat exchanger tube according to claim 1, is characterized in that, described helical blade and hollow shaft are formed by macromolecular material, polymer-based composite, metal or ceramic material.
3. enhanced heat exchange shuttle rotor in heat exchanger tube according to claim 1, it is characterized in that, there is coaxial configuration at hollow shaft two ends, and the afterbody centering of the head of the hollow shaft of each rotor and the hollow shaft of previous rotor also coordinates, and coaxial configuration can be nest ball, universal joint or buckle.
4. enhanced heat exchange shuttle rotor in heat exchanger tube according to claim 1, is characterized in that, it is elliptic arc or circular curve that helical blade projects on heat exchanger tube axial cross section, and helical blade root is crossing with hollow shaft outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510656181.8A CN105135933A (en) | 2015-10-12 | 2015-10-12 | Shuttle-shaped heat transfer enhancement rotor in heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510656181.8A CN105135933A (en) | 2015-10-12 | 2015-10-12 | Shuttle-shaped heat transfer enhancement rotor in heat exchange tube |
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| Publication Number | Publication Date |
|---|---|
| CN105135933A true CN105135933A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510656181.8A Pending CN105135933A (en) | 2015-10-12 | 2015-10-12 | Shuttle-shaped heat transfer enhancement rotor in heat exchange tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944960A (en) * | 2021-03-09 | 2021-06-11 | 格力电器（武汉）有限公司 | Rotational flow disturbance device and heat exchange tube structure |
| CN113108511A (en) * | 2021-05-06 | 2021-07-13 | 深圳市伟力低碳股份有限公司 | Supercooled water ice making device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5307867A (en) * | 1992-08-10 | 1994-05-03 | Noritake Co., Limited | Heat exchanger |
| CN2921766Y (en) * | 2006-05-29 | 2007-07-11 | 吉永平 | Automatic stains-cleaning and intensified heat exchanger for steam turbine condenser |
| CN103225980A (en) * | 2013-05-02 | 2013-07-31 | 北京化工大学 | Multi-axis low-rotating-speed spiral rotor in heat exchange tube |
| CN103411467A (en) * | 2013-08-02 | 2013-11-27 | 北京化工大学 | Low driving rotor with turbulence core and in heat exchange tube |
| CN205027196U (en) * | 2015-10-12 | 2016-02-10 | 郑州大学 | Reinforce heat transfer fusiformis rotor in heat exchange tube |
-
2015
- 2015-10-12 CN CN201510656181.8A patent/CN105135933A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5307867A (en) * | 1992-08-10 | 1994-05-03 | Noritake Co., Limited | Heat exchanger |
| CN2921766Y (en) * | 2006-05-29 | 2007-07-11 | 吉永平 | Automatic stains-cleaning and intensified heat exchanger for steam turbine condenser |
| CN103225980A (en) * | 2013-05-02 | 2013-07-31 | 北京化工大学 | Multi-axis low-rotating-speed spiral rotor in heat exchange tube |
| CN103411467A (en) * | 2013-08-02 | 2013-11-27 | 北京化工大学 | Low driving rotor with turbulence core and in heat exchange tube |
| CN205027196U (en) * | 2015-10-12 | 2016-02-10 | 郑州大学 | Reinforce heat transfer fusiformis rotor in heat exchange tube |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944960A (en) * | 2021-03-09 | 2021-06-11 | 格力电器（武汉）有限公司 | Rotational flow disturbance device and heat exchange tube structure |
| CN113108511A (en) * | 2021-05-06 | 2021-07-13 | 深圳市伟力低碳股份有限公司 | Supercooled water ice making device |
| CN113108511B (en) * | 2021-05-06 | 2022-07-01 | 深圳市伟力低碳股份有限公司 | Supercooled water ice-making device |
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| PB01 | Publication | ||
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Application publication date: 20151209 |