CN102878856B - Baffling and turbulence combined type enhanced heat transfer inner inserting element - Google Patents
Baffling and turbulence combined type enhanced heat transfer inner inserting element Download PDFInfo
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- CN102878856B CN102878856B CN201210413831.2A CN201210413831A CN102878856B CN 102878856 B CN102878856 B CN 102878856B CN 201210413831 A CN201210413831 A CN 201210413831A CN 102878856 B CN102878856 B CN 102878856B
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- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
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- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a baffling and turbulence combined type enhanced heat transfer inner inserting element in a heat transfer pipe. The inner inserting element consists of a baffling ring and a turbulence rotor, wherein the turbulence rotor consists of a hollow shaft and a spiral blade, a certain included angle is formed at the edges of the downstream side and the upstream side of the blade, the baffling ring consists of a hollow shaft and a baffling annular sheet, the outer diameter of the baffling ring is smaller than the outer diameter of the turbulence rotor combined with the baffling ring, the baffling annular sheet consists of two sections, one section is a cylindrical ring, one section is a conical ring, the surface of the baffling annular sheet is smooth, holes are formed on the conical ring, and the inclined angle of the cone angle of the conical ring of the baffling annular sheet is identical to the inclined angle of the bade edge of the turbulence rotor. One part of center turbulence fluid in the heat exchange pipe is blocked by the baffling ring, the flowing direction is changed into the radial flowing, and the mixing with a laminar flow boundary layer at the pipe wall type is generated; and the other part of center fluid passes through the open holes arranged on the surface of the baffling annular sheet, the blade of the turbulence rotor is impacted at high speed, the rotor rotates around the axial line, the turbulence rotor acts on the fluid in the pipe after rotation, the tangential flowing of the fluid is enhanced, and the turbulence degree of the fluid is enhanced.
Description
Technical field
The present invention relates to a kind of baffling flow-disturbing combination intensifying heat transfer plug-in part that is applied to augmentation of heat transfer and antifouling scrubbing in heat exchanger tube in the equipment such as shell-and-tube heat exchanger, heat exchange reactor.
Background technology
China is resource big country, and a lot of resource reserves rank prostatitis, the world, but simultaneously, China is also the country that world population is maximum, a lot of resources average occupancy volume is lower than world average level per capita, therefore, China is again the country of a resource scarcity.Since reform and opening-up, the economic develop rapidly of China, economic total volume leaps into the front ranks of the world, and meanwhile, China also becomes global the first energy resource consumption big country, and therefore, energy-saving and emission-reduction are most important for China's sustainable economic development.As a kind of important heat transmission equipment, shell-and-tube heat exchanger is widely used in the fields such as oil, chemical industry, iron and steel, electric power, and energy waste is serious in commercial Application, and therefore, heat exchanger is the key equipment of realizing energy-saving and emission-reduction.The a large amount of dirts that throughout the year accumulate in shell-and-tube heat exchanger heat exchanger tube have had a strong impact on the raising of heat exchanger heat exchange property, but also can grow blocking pipe, corrosion pipeline etc. and destroy the phenomenon of heat exchangers, therefore, realizing heat exchanger tube antiscaling, descaling is the key that improves heat exchanger heat exchange property.For a long time, researcher is devoted to the research of the interior antiscaling, descaling of heat exchanger tube and strengthened heat exchange method and device.Helical spring and spiral winding are more early stage enhanced heat exchange and antiscaling and descaling devices, Patents has: 201110038943.X, patent name is " two diameter spring type heat transfer pipe insert orifice fixing device ", and research finds that helical spring and spiral winding have certain enhanced heat exchange and tartar preventing iron tartar effect.Occur afterwards utilizing fluid to promote spiral band and rotate the method that realizes online automatic desludging, relevant spiral band Chinese patent has: CN200989748Y, and patent name is " rotation variable flow state plastic spiral tie "; CN2498574Y, patent name is " can prevent the spiral vinculum appts of heat exchanger tube fouling "; CN2568324Y, patent name is " spiral vinculum appts ", spiral band has the effect of enhanced heat exchange and antiscaling, descaling, but exist tube wall scraping simultaneously more serious, the shortcoming such as resistance is large, and service life is short.Occurred afterwards enhanced heat exchange and antiscaling, descaling rotator type structure, Patents has: ZL200520127121.9, and patent name is " rotator type cleaning and heat-transfer enhancing device "; ZL201110050891.8, patent name is " heat exchange tube internal radial direction ladder-type rotor ", and rotator type structure mainly consists of fixed mount, rotor, flexible shaft and stay pipe, and two fixed mounts are separately fixed at the two ends of heat exchanger tube; Bracing frame is located between rotor and fixed mount, and flexible shaft is fixed on two fixed mounts through centre bore and the stay pipe of rotor.Under tube fluid effect, rotor sways, and rotor blade carries out slight scraping to tube wall, plays the effect of antiscaling, descaling, and in addition, rotor rotates, and tube fluid is carried out to disturbance, enhance fluid turbulent extent, and then play the effect of enhanced heat exchange.Above strengthened heat exchange method and device are more single to the mode of action of tube fluid, and reinforcing heat exchange capability is limited, and this invention has realized convection cell simultaneously and carried out baffling effect and flow-disturbing effect, the displacement of core flow and wall fluid in enhanced tube.
Summary of the invention
The object of the invention is to design a kind of baffling flow-disturbing combination intensifying heat transfer plug-in part, this device is comprised of baffle ring and flow-disturbing rotor, has the effect of enhanced heat exchange and antiscaling, descaling.
The technical solution used in the present invention is as follows: baffling flow-disturbing combination intensifying heat transfer plug-in part, by baffle ring and flow-disturbing rotor, formed, flow-disturbing rotor is comprised of hollow shaft and helical blade, helical blade external diameter is less than heat exchanger tube internal diameter, helical blade surface is smooth and around hollow shaft in the shape of a spiral, helical blade meets water lateral edges, helical blade land side seamed edge respectively and between hollow shaft axis, has certain inclination angle; Baffle ring is comprised of hollow shaft and baffling ring plate, baffle ring external diameter is less than the flow-disturbing rotor diameter with its combination, baffling ring plate forms by two sections, one section is cylinder ring, one section is circular cone ring, baffling ring plate smooth surface, has rectangle, annular or other shape perforate on circular cone ring, inclination angle size and direction between inclination angle and helical blade land side seamed edge and hollow shaft axis that inclination angle, the helical blade between baffling ring plate and hollow shaft axis meets water between lateral edges and hollow shaft axis are identical; Baffle ring and flow-disturbing rotor coaxial assembled arrangement, entirety is threaded onto on fixed center axis, baffle ring head combines with flow-disturbing rotor afterbody or baffle ring afterbody combines with flow-disturbing rotor head, can the one or more flow-disturbing rotors in interval between two baffle rings.In heat exchanger tube, heat-transfer fluid is in flow process, and a part of center turbulent fluid is subject to stopping of baffle ring, and flow direction changes Radial Flow into, mixes, and it is carried out to disturbance with tube wall place laminar boundary layer; Another part core flow, through the surface perforate of baffling ring plate, is impacted flow-disturbing rotor blade at a relatively high speed, and rotor is rotated around axis, after flow-disturbing rotor, reacts on tube fluid, and enhance fluid tangentially flows, and then the less turbulence of enhance fluid; In flow-disturbing rotor rotation process, rotor blade seamed edge is slightly swiped to tube wall, disturbance boundary layer simultaneously, attenuate boundary layer thickness.Above feature plays the effect of enhanced heat exchange and antiscaling, descaling jointly.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, flow-disturbing rotor along the equally distributed spiral vane number of hollow shaft circumferencial direction be two, three or more; Flow-disturbing rotor can be the dissimilar rotors such as screw slotting blade rotor, spiral step rotor.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, baffle ring external diameter is less than and its combination flow-disturbing rotor diameter, and baffling ring plate surface has the hole of rectangle, annular or other shape, and baffling ring plate has certain inclination angle.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, baffle ring and flow-disturbing rotor coaxial combined type are arranged, baffle ring afterbody combines with flow-disturbing rotor head or baffle ring head combines with flow-disturbing rotor afterbody, entirety is threaded onto in two rotating shafts between suspension member, can the one or more flow-disturbing rotors in interval between two baffle rings.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, the hollow shaft two ends of baffle ring and flow-disturbing rotor are provided with the coaxial configurations such as ball-and-socket mode, circular cone mode, buckle mode or universal joint mode.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, the hollow shaft cross sectional shape of described flow-disturbing rotor and baffle ring is open circles taper, hollow cylinder, hollow nodal figure or hollow many prismatics.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, meet water inclination angle and baffling ring plate circular cone ring cone angle inclination angle size, the direction of side and land side seamed edge of the blade of flow-disturbing rotor is identical.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, baffle ring is threaded onto and is connected on axis with the connected whole string of flow-disturbing rotor combination, and connecting axis can be the pole of rigidity, can be also flexible tightrope.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, baffle ring and flow-disturbing rotor are by macromolecular material, polymer-based composite, metal or ceramic material.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, baffle ring and flow-disturbing rotor surface are smooth, and baffle ring and the flow-disturbing rotor lateral edges that meets water is carried out rounding or bevelling.
Baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention, baffle ring and flow-disturbing rotor are processed respectively, and then combination is threaded onto on central axis.
In described folding baffling flow-disturbing combination intensifying heat transfer plug-in part, the external diameter of baffle ring, baffling ring plate surface hole shape, position and quantity, baffle ring hollow shaft length, internal diameter; The parameters such as the blade quantity of flow-disturbing rotor, external diameter, axial length, lead angle, the parameters such as flow-disturbing rotor hollow shaft axial length, internal diameter, can be processed into original definite according to intensity, the wearability of the working conditions such as velocity of medium in heat exchanger tube internal diameter, pipe and rotor self in conjunction with manufacture.
The invention has the beneficial effects as follows: the baffling flow-disturbing combination intensifying heat transfer plug-in part of 1, inventing, the barrier effect of baffle ring to center segment fluid flow, core flow is flowed to tube wall boundary layer fluid, mix with it and it is carried out to disturbance, can promote the displacement of core flow and boundary layer fluid, attenuate boundary layer thickness, enhanced heat exchange.2, the baffling flow-disturbing combination intensifying heat transfer plug-in part of inventing, in flow-disturbing rotor rotation process, by tangential motion and the less turbulence of reinforced pipe inner fluid, improves heat exchange property.3, institute's invention baffling flow-disturbing combination intensifying heat transfer plug-in part, flow-disturbing rotor is in rotation process, and blade seamed edge scraping tube wall, can antiscaling, descaling, and can attenuate boundary layer thickness, enhanced heat exchange.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure schematic diagram of baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention;
Fig. 2 is the three-dimensional structure schematic diagram of baffle ring in the interior baffling flow-disturbing combination intensifying heat transfer plug-in part of heat exchanger tube of the present invention;
Fig. 3 is the three-dimensional structure schematic diagram of flow-disturbing rotor in the interior baffling flow-disturbing combination intensifying heat transfer plug-in part of heat exchanger tube of the present invention;
Fig. 4 is the three-dimensional structure schematic diagram of another kind of form-spiral three blade rotors of flow-disturbing rotor of baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention;
Fig. 5 is the mounting structure schematic diagram of baffling flow-disturbing combination intensifying heat transfer plug-in part in heat exchanger tube of the present invention.
In figure, 1-baffle ring, 2-flow-disturbing rotor, 3-ball-and-socket boss, 4-hollow shaft, 5-baffling ring plate, 6-perforate, 7-ball-and-socket concave station, 8-through hole, 9-helical blade, 10-rotating shaft, 11-suspension member, 12-heat exchanger tube, 13-locating part.
The specific embodiment
As shown in Figure 5, baffling flow-disturbing combination intensifying heat transfer plug-in part in a kind of heat exchanger tube the present invention relates to, strengthening and heat transferring device comprises baffle ring 1, flow-disturbing rotor 2, rotating shaft 10, suspension member 11, heat exchanger tube 12, locating part 13, baffle ring 1, flow-disturbing rotor 2 is baffling flow-disturbing combination intensifying heat transfer plug-in part of the present invention, together with several baffle rings 1 are installed on by rotating shaft 10 with flow-disturbing rotor 2 coaxial combination, between the baffle ring 1 of some and 2 combinations of flow-disturbing rotor, by locating part 13, separate, suspension member 11 is fixed on heat exchanger tube 12 two ends, the two ends of rotating shaft 10 are fixed on suspension member 11 by locating part 13.In heat exchanger tube of the present invention, baffling flow-disturbing composite fabricated rotor is comprised of baffle ring 1 and flow-disturbing rotor 2, in the baffling ring plate 5 of baffle ring 1, there is symmetrical perforate 6, hollow shaft 4 two ends of baffle ring 1 and flow-disturbing rotor 2 have ball-and-socket boss 3 and ball-and-socket concave station 7, ball-and-socket boss 3 in baffle ring 1 hollow shaft 4 and ball-and-socket concave station 7 coordinate with ball-and-socket concave station 7 and ball-and-socket boss 3 in flow-disturbing rotor 2 hollow shafts 4 respectively, 2 one groups of several baffle rings 1 and flow-disturbing rotors are threaded onto in rotating shaft 10, number can be determined according to conditions such as heat exchanger tube 12 length and velocities in pipes, do not use locating part 13 to separate between on the same group.Baffle ring 1 except adopting ball-and-socket mode, can also adopt circular cone mode, buckle mode and direction joint mode with flow-disturbing rotor 2.
In the present invention, baffle ring 1 and flow-disturbing rotor 2 are built in heat exchanger tube 12, and the interior heat-transfer fluid of heat exchanger tube 12 is in flow process, part center turbulent fluid is subject to stopping of baffle ring 1, flow direction changes Radial Flow into, mixes, and it is carried out to disturbance with tube wall place laminar boundary layer; Another part core flow is through the surperficial perforate 6 of baffling ring plate 5, impact at a relatively high speed flow-disturbing rotor blade 9, make flow-disturbing rotor 2 10 rotations around the shaft, after 2 rotations of flow-disturbing rotor, react on tube fluid, enhance fluid tangentially flows, and then the less turbulence of enhance fluid; In flow-disturbing rotor 2 rotation processes, rotor blade 9 seamed edges are slightly swiped to tube wall, disturbance boundary layer simultaneously, and attenuate boundary layer thickness, plays the effect of enhanced heat exchange and antiscaling, descaling jointly.
Claims (2)
1. baffling flow-disturbing combination intensifying heat transfer plug-in part, it is characterized in that: by baffle ring and flow-disturbing rotor, formed, flow-disturbing rotor is comprised of hollow shaft and helical blade, helical blade external diameter is less than heat exchanger tube internal diameter, helical blade surface is smooth and around hollow shaft in the shape of a spiral, helical blade meets water lateral edges, helical blade land side seamed edge respectively and between hollow shaft axis, has certain inclination angle; Baffle ring is comprised of hollow shaft and baffling ring plate, baffle ring external diameter is less than the flow-disturbing rotor diameter with its combination, baffling ring plate forms by two sections, one section is cylinder ring, one section is circular cone ring, baffling ring plate smooth surface, has perforate on circular cone ring, and inclination angle size and direction between inclination angle and helical blade land side seamed edge and hollow shaft axis that inclination angle, the helical blade between baffling ring plate and hollow shaft axis meets water between lateral edges and hollow shaft axis are identical; Baffle ring and flow-disturbing rotor coaxial assembled arrangement, entirety is threaded onto on fixed center axis, baffle ring head combines with flow-disturbing rotor afterbody or baffle ring afterbody combines with flow-disturbing rotor head, can the one or more flow-disturbing rotors in interval between two baffle rings.
2. baffling flow-disturbing combination intensifying heat transfer plug-in part according to claim 1, is characterized in that: on circular cone ring, perforate is shaped as rectangle or annular.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413831.2A CN102878856B (en) | 2012-10-25 | 2012-10-25 | Baffling and turbulence combined type enhanced heat transfer inner inserting element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210413831.2A CN102878856B (en) | 2012-10-25 | 2012-10-25 | Baffling and turbulence combined type enhanced heat transfer inner inserting element |
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| Publication Number | Publication Date |
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| CN102878856A CN102878856A (en) | 2013-01-16 |
| CN102878856B true CN102878856B (en) | 2014-04-16 |
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| CN201210413831.2A Expired - Fee Related CN102878856B (en) | 2012-10-25 | 2012-10-25 | Baffling and turbulence combined type enhanced heat transfer inner inserting element |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110773329B (en) * | 2019-09-19 | 2020-09-01 | 中国矿业大学 | Turbulent flow generating device suitable for micro-fine particle is selected separately fast |
| CN110793065B (en) * | 2019-10-29 | 2020-12-08 | 上海朗申电子科技有限公司 | Kitchen range |
| CN111437762A (en) * | 2020-04-27 | 2020-07-24 | 廊坊新奥龙河环保科技有限公司 | Supercritical water oxidation device |
| CN112696967A (en) * | 2020-12-24 | 2021-04-23 | 华能吉林发电有限公司农安生物质发电厂 | Baffle plate and shell-and-tube heat exchanger |
| CN112629309B (en) * | 2020-12-25 | 2022-06-03 | 常州大学 | Combined dynamic turbulence plug-in |
| CN112985161B (en) * | 2021-03-09 | 2022-08-30 | 重庆中创鼎新智能化节能技术有限公司 | Open type enhanced heat exchange and online cleaning device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0823612A1 (en) * | 1996-08-07 | 1998-02-11 | Cornel Dutescu | Turbulator for a concentric-tube heat exchanger |
| DE19729725A1 (en) * | 1997-07-11 | 1999-01-14 | Hoecker Hans Peter Dipl Ing Fh | Heat-exchanger between flowing media |
| BRPI0614593A2 (en) * | 2005-08-09 | 2011-04-05 | Eestech Inc | manifold for a fluid medium in a heat exchanger, and heat exchanger |
| CN101762203B (en) * | 2008-12-23 | 2011-11-30 | 北京化工大学 | Inner boundary layer cutting disturbing radial mixed flow device of heat exchange pipe |
| CN101813437B (en) * | 2009-02-20 | 2012-07-25 | 北京华夏英蓝科技发展有限公司 | Unit-combination type heat transfer enhancement device |
| CN201628513U (en) * | 2009-12-16 | 2010-11-10 | 北京化工大学 | Autorotation rotor connecting structure in heat exchange tube |
| CN101893404A (en) * | 2010-08-06 | 2010-11-24 | 北京化工大学 | Arch static turbulent element in heat exchange pipe |
| CN202853457U (en) * | 2012-10-25 | 2013-04-03 | 北京化工大学 | Baffling and turbulence combined heat-transfer enhancement insert |
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