CN103217054A - Porous screw blade rotor in heat exchange tube - Google Patents
Porous screw blade rotor in heat exchange tube Download PDFInfo
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- CN103217054A CN103217054A CN201310151291XA CN201310151291A CN103217054A CN 103217054 A CN103217054 A CN 103217054A CN 201310151291X A CN201310151291X A CN 201310151291XA CN 201310151291 A CN201310151291 A CN 201310151291A CN 103217054 A CN103217054 A CN 103217054A
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- micropore
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Abstract
The invention relates to a porous screw blade rotor in a heat exchange tube. The porous screw blade rotor is formed by a hollow shaft and porous screw blades. The porous screw blades are evenly distributed on the surface of the hollow shaft. The external diameter of the porous blades is smaller than the internal diameter of the heat exchange tube. The blades are in a spiral shape around the hollow shaft, and micropore structures are arranged on the surfaces of the blades along the axial direction and the radial direction of the hollow shaft. Micropores keep a certain distance from the hollow shaft. Edges, being firstly contacted with water flow, of micropore blades form slant chamfers or round chamfers. Holes communicated with inner holes of the hollow shaft are evenly formed in the hollow shaft far from a water inlet end along the circumferential direction. The rotary torque of fluid to the rotor and a combination fixing mode of the porous blades on the hollow shaft can be changed through changing of spiral angles of the porous screw blades along the axial direction of the hollow shaft, the axial length of the hollow shaft, the height along the radial direction of the hollow shaft, the distance between the micropores and root portions of the blades, sizes of the micropores, spaces between the micropores, the arrangement mode of the micropores and the number of the micropores along the axial direction and the radial direction of the hollow shaft so as to facilitate installation of the rotor in the heat exchange tube.
Description
Technical field
The present invention relates to a kind of plug-in part device that is applied to the shell-and-tube heat exchanger power-saving technology, particularly a kind of have enhanced heat exchange and a self-cleaning function, is applicable to that the resistance that contains gas phase in the fluid is little, the porous helical blade rotor of long service life.
Background technology
All to be applied to many heat exchangers in various fields such as oil, chemical industry, thermoelectricity, nuclear power, metallurgy, light industry, aviation device and boats and ships vehicles, what wherein be most widely used is shell-and-tube heat exchanger, but ubiquity lamination dirt in these heat exchanger tube inwalls, cause fluid transporting resistance in pipeline to increase, meeting blocking pipe when serious, heat transfer property greatly descends simultaneously; Dirt can seriously reduce heat transfer efficiency in the heat exchanger tube, causes great energy waste.Therefore, the exploitation of heat exchanger augmentation of heat transfer and automatically cleaning technology and popularization just seem very important.And plug-in part is as a kind of typical tube side augmentation of heat transfer means, especially be subjected to people's extensive concern, one of them utilizes fluid to promote the method that the spiral band energy of rotation realizes strengthening online automatic desludging, the spiral band Chinese patent application number is: ZL95236063.2, patent name is the innovation and creation of " cleaning device of descaling and antiscaling in the heat-transfer pipe ", this device plays a role to enhanced heat exchange and antiscaling, descaling, but also have the following disadvantages simultaneously: (1) tie is an integral body, heat-transfer pipe is directly swiped damage heat exchanger tube inwall; Promoting the tie rotation when (2) fluid flows needs bigger driving moment, consumes more fluid kinetic energy; (3) service life of the bearing of single-ended fixedly usefulness is short; (4) the field cooperative reinforcing heat-transfer effect of tie generation is not remarkable.Occurred enhanced heat exchange and antiscaling, descaling rotator type structure afterwards, relevant patent has: ZL200520127121.9, patent name are " rotator type cleaning and heat-transfer enhancing device "; This device is to be made 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 centre bore is arranged on the rotor; Bracing frame is located between rotor and the fixed mount, and flexible shaft passes the centre of rotor hole and stay pipe is fixed on two fixed mounts.This device has the function of on-line automatic antiscaling, descaling and augmentation of heat transfer, under the situation of fluid following current or adverse current in heat-transfer pipe, the effect of antiscaling, descaling and augmentation of heat transfer is arranged all.But shortcoming be certain fluid by the time, the rotary speed of rotor is that the lead angle by the spiral shell rib is determined that fast in the rotary speed of spiral shell rib helical pitch hour rotor, the resistance of convection cell increases thereupon simultaneously; Be head it off, Chinese patent application numbers 200610169828.5, denomination of invention is " low flow resistance rotor of cleaning and heat-transfer enhancing in the heat-transfer pipe ", this device is by rotor, bracing frame be connected axis and constitute, bracing frame is fixed on the heat-transfer pipe two ends, the two ends that connect axis are separately fixed on the bracing frame, a plurality of rotors are installed on and connect on the axis, and rotor is to be made of hollow shaft and fin, and blade is stepped, it is same skewed that each fin becomes with hollow shaft, the fin working surface is vortex shape or plane, and fin has perturbation action to tube fluid, strengthens heat convection, the space that occupy of rotor in heat exchanger tube is little, thereby flow resistance is less.Imbalance or eccentric phenomena can appear but shortcoming is a rotor when rotating under the fluid impetus, thereby cause blade tip and heat exchanger tube inwall to produce scraping, reduce its service life, impact the blade front end because fluid is interrupted in addition, thereby produce certain fluid resistance.Therefore rotor should produce the less resistance loss under higher reinforcing heat exchange capability prerequisite in heat exchanger tube, should have preferably that centering acts on simultaneously, to reduce the scraping effect of itself and heat exchanger tube inwall, prolongs its service life.
Summary of the invention
The objective of the invention is to design a kind of new construction rotor that is applicable to the multiphase flow that contains gas phase in the fluid, the blade surface of this rotor is provided with a plurality of micropores, to reduce the percussion of gas to rotor, reduce the rotor running speed, reduce the axial force of rotor, reduce fluid resistance, strengthen the level of disruption of rotor convection cell, the enhanced heat exchange process.
The present invention is that the technical scheme that addresses the above problem employing is: porous helical blade rotor in the heat exchanger tube, it is to be made of hollow shaft and porous helical blade.The porous helical blade is uniformly distributed in the hollow shaft surface, porous helical blade external diameter is less than the heat exchanger tube internal diameter, blade is around hollow shaft shape in the shape of a spiral, and the surface of blade axially reaches along hollow shaft and radially is provided with microcellular structure, micropore is apart from hollow shaft one segment distance, and the seamed edge that the micropore blade contacts with current at first carries out bevelling or rounding.Hollow shaft along the circumferential direction has the hole that communicates with described hollow shaft endoporus equably away from inlet end, change fluid turning moment to rotor along the axial helical angle of hollow shaft, axial length, distance, pore size, micropore spacing, micropore arrangement mode and micropore along hollow shaft height, micropore and hollow shaft radially along the number that hollow shaft axially reaches radially by changing the porous helical blade, the porous helical blade will be convenient to the installation of rotor in heat exchanger tube in the combination fixed form on the hollow shaft.When heat transfer fluid flow is crossed the porous helical blade, can produce axial force, direction of flow be changed, form mixed flow thereby porous helical blade obstruction heat-transfer fluid is mobile to rotor; Fluid promotes whole rotor rotation, has strengthened the tangential of heat-transfer fluid and has flowed, thereby reached augmentation of heat transfer and stop the formation of dirt and the purpose of deposition.The porous helical blade is in rotation process simultaneously, can make the flow through micropore of blade surface of heat-transfer fluid, further strengthen the Radial Flow and tangential the flowing of heat-transfer fluid, increased the level of disruption of rotor convection cell, further realized the effect of antiscaling, descaling and augmentation of heat transfer.Can change the turning moment of fluid along the axial helical angle of hollow shaft, axial length, distance, pore size, micropore spacing, micropore arrangement mode and micropore along the number that hollow shaft axially reaches radially by changing the porous helical blade, make rotor rotating flow in heat exchanger tube smooth rotor along hollow shaft height, micropore and hollow shaft radially.
Porous helical blade rotor in the heat exchanger tube of the present invention, along the equally distributed porous helical blade of hollow shaft circumferencial direction number be two, three or more.
Porous helical blade rotor in the heat exchanger tube of the present invention, the micropore that porous helical blade surface is provided with is a two or more rows along the number that hollow shaft axially reaches radially, the helical blade surface axially reaches radially-arranged micropore spacing along hollow shaft can be identical or different, the size of micropore can identical or ascending arrangement, and micropore can be modes such as rectangle or equilateral triangle at the arrangement mode of blade surface.
Porous helical blade rotor in the heat exchanger tube of the present invention, its hollow shaft two ends are provided with coaxial configuration, the coaxial configuration head and the tail combination of two adjacent rotor has realized the axial location between rotor, prevent rotor in rotation process along the rotating shaft axial float.The hollow shaft coaxial configuration of rotor can be ball-and-socket mode, circular cone mode, buckle mode or universal joint mode.
Porous helical blade rotor in the heat exchanger tube of the present invention, its hollow shaft cross sectional shape is the open circles taper, hollow cylinder, hollow nodal figure or hollow many prismatics, the rotor hollow shaft has cross sectional shape for semicircle away from inlet end, oval, rectangle or the trapezoidal hole that communicates with the hollow shaft endoporus, this hole length in axial direction is greater than the length of hollow shaft water inlet end place concave station, this hole can make in the space of heat-transfer fluid between hollow shaft and rotating shaft flows, and the dirt between drive hollow shaft and the rotating shaft is along with heat-transfer fluid is discharged, thereby prevented the deposition of dirt, saved material simultaneously.
Porous helical blade rotor in the heat exchanger tube of the present invention, rotor can join end to end to put in order to go here and there to be threaded onto and connect on the axis, and connecting axis can be the pole of rigidity, also can be flexible tightrope; Also can be divided into identical or different some groups of rotor quantity, rotor is evenly rotated by locating part.Before and after two adjacent rotor cooperating micropore number, micropore spacing, pore size, micropore arrangement mode and with hollow shaft distance etc. can be identical or different.
Porous helical blade rotor in the heat exchanger tube of the present invention, its blade and hollow shaft are by macromolecular material, polymer-based composite, metal or ceramic material.
The helical angle of the porous helical blade of described rotor, axial length, distance, pore size, micropore spacing, micropore arrangement mode and micropore and radially number axial along hollow shaft along hollow shaft height, micropore and hollow shaft radially, can be processed in conjunction with manufacturing according to the intensity of working condition such as velocity of medium and rotor self in heat exchanger tube internal diameter, the pipe, wearability and determine originally, can take rotation or independent rotational structure synchronously between the adjacent rotor.
The invention has the beneficial effects as follows: the rotor porous helical blade surface of 1, being invented has microcellular structure, can be under the prerequisite that does not increase porous helical blade radial height, make when fluid is flowed through micropore produce bigger radially and tangential velocity, strengthen the mixed flow effect, thereby improve heat conduction reinforced ability; 2, the microcellular structure on rotor porous helical blade surface has reduced the rotor running speed, reduces the axial force of rotor, reduces fluid resistance, has saved the cost of manufacture of rotor and has helped installation; 3, the hole that communicates with the hollow shaft endoporus that has away from inlet end of single rotor hollow shaft can make heat-transfer fluid flow between hollow shaft inside and rotating shaft, driving dirt discharges from the space between hollow shaft inside and the rotating shaft, prevented the deposition of dirt, saved rotor material, provided cost savings.
Description of drawings
Fig. 1 is porous helical blade rotor---the equidistant equidimension micropore two blade rotor three-dimensional structure schematic diagrames of rectangular arranged in the heat exchanger tube of the present invention.
Fig. 2 is that porous helical blade rotor---equilateral triangle is arranged equidistant equidimension micropore two blade rotor three-dimensional structure schematic diagrames in the heat exchanger tube of the present invention.
Fig. 3 is a porous helical blade rotor in the heat exchanger tube of the present invention---parallelogram is arranged different spacing different size micropore two blade rotor three-dimensional structure schematic diagrames.
Fig. 4 is a porous helical blade rotor in the heat exchanger tube of the present invention---parallelogram is arranged different spacing equidimension micropore two blade edge slotted rotor three-dimensional structure schematic diagrames.
Fig. 5 is the mounting structure schematic diagram of porous helical blade rotor in the heat exchanger tube of the present invention.
Among the figure, 1-ball-and-socket boss, 2-hollow shaft, 3-porous helical blade, the hole that 4-micropore, 5-communicate, 6-ball-and-socket concave station, 7-rotating shaft, 8-heat exchanger tube, 9-suspension member.
The specific embodiment
As shown in Figure 5, porous helical blade rotor in a kind of heat exchanger tube of the present invention, this strengthening and heat transferring device comprises rotor, rotating shaft 7, heat exchanger tube 8 and suspension member 9, several rotors are cascaded by rotating shaft 7, suspension member 9 is fixed on heat exchanger tube 8 two ends, the two ends of rotating shaft 7 are separately fixed on the suspension member 9, and rotor of the present invention is fixed on by the porous helical blade 3 of some to be formed on hollow shaft 2 surfaces, also has ball-and-socket boss 1, the hole 5 that communicates with the hollow shaft endoporus and ball-and-socket concave station 6 on the hollow shaft 2.In two adjacent rotor, thereby the ball-and-socket boss 1 of hollow shaft 2 heads of a rotor and the ball-and-socket concave station 6 of another rotor afterbody combine to play and are connected and adjust the effect that makes it coaxial, this structure also is a kind of flexible connecting structure that can adapt to heat exchanger tube 8 knees, this structure is except can adopting the ball-and-socket mode, circular cone mode, buckle mode and direction joint mode can also be adopted, under the less demanding situation of axiality, planar structure can also be adopted.
As shown in Figures 1 to 4, hollow shaft 2 cross sectional shapes of rotor are the open circles taper; Fig. 1 is equidistant equidimension micropore two blade rotors of rectangular arranged, two porous helical blades 3 are arranged on the rotor hollow shaft 2, two porous helical blades 3 are symmetrically distributed, also have ball-and-socket boss 1, ball-and-socket concave station 6 and the uniform hole 5 that communicates with hollow shaft 2 endoporus on the hollow shaft 2, porous helical blade 3 lip-deep micropore 4 rectangular modes are arranged, and the size and the spacing of micropore 4 are identical; Fig. 2 arranges equidistant equidimension micropore two blade rotors for equilateral triangle, and porous helical blade 3 lip-deep micropores 4 are the equilateral triangle mode and arrange; Shown in Figure 3 is that parallelogram is arranged different spacing different size micropore two blade rotors, and porous helical blade 3 lip-deep micropore 4 parallelogram modes are arranged, and the size of micropore 4 and spacing are all different; Fig. 4 is that parallelogram is arranged different spacing equidimension micropore two blade edge slotted rotors, and porous helical blade 3 edges have circular groove.
Among the present invention, the heat-transfer fluids in the heat exchanger tube 8 can produce axial force and rotating torque to rotor in flow process, flow direction of flow is changed thereby porous helical blade 3 hinders heat-transfer fluids, form mixed flow; Porous helical blade 3 shape in the shape of a spiral around hollow shaft 2, fluid promotes rotor rotation, and the tangential motion of heat-transfer fluid has obtained reinforcement, thereby reaches augmentation of heat transfer and stop the purpose of dirt deposition.Meanwhile, porous helical blade 3 is in rotation process, can make the flow through micropore 4 on porous helical blade 3 surfaces of heat-transfer fluid, the Radial Flow and tangential the flowing of heat-transfer fluid have further been strengthened, increase the level of disruption of rotor convection cell, further realize the effect of antiscaling, descaling and augmentation of heat transfer.This kind form rotor can by change porous helical blade 3 along the axial helical angle of hollow shaft 2, axial length, along distance, micropore 4 sizes, micropore 4 spacings, micropore 4 arrangement modes and the micropore 4 of radially height of hollow shaft 2, micropore 4 and hollow shaft 2 along hollow shaft 2 axially and numbers radially change the turning moment of fluid to rotor, guarantee the smoothness rotation of rotor.The dirt discharge of heat-transfer fluid between hollow shaft 2 inside and rotating shaft 7 is convenient in rotor hollow shaft 2 holes 5 that communicate with hollow shaft 2 endoporus that open away from inlet end, prevented the deposition of dirt.
Claims (3)
1. porous helical blade rotor in the heat exchanger tube, it is characterized in that: constitute by hollow shaft and porous helical blade, the porous helical blade is uniformly distributed in the hollow shaft surface, porous helical blade external diameter is less than the heat exchanger tube internal diameter, the porous helical blade is around hollow shaft shape in the shape of a spiral, and the surface of porous helical blade axially reaches along hollow shaft and radially is provided with microcellular structure, and micropore is apart from hollow shaft one segment distance, and the seamed edge that the porous helical blade contacts with current at first carries out bevelling or rounding; Hollow shaft along the circumferential direction has the hole that communicates with described hollow shaft endoporus equably away from inlet end.
2. porous helical blade rotor in the heat exchanger tube according to claim 1 is characterized in that: the number along the equally distributed porous helical blade of hollow shaft circumferencial direction is two or more; The micropore that porous helical blade surface is provided with is a two or more rows along the number that hollow shaft axially reaches radially, porous helical blade surface axially reaches radially-arranged micropore spacing along hollow shaft can be identical or different, and the size of micropore can identical or ascending arrangement.
3. porous helical blade rotor in the heat exchanger tube according to claim 1, it is characterized in that: micropore is rectangle or equilateral triangle at the arrangement mode of blade surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310151291XA CN103217054A (en) | 2013-04-27 | 2013-04-27 | Porous screw blade rotor in heat exchange tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310151291XA CN103217054A (en) | 2013-04-27 | 2013-04-27 | Porous screw blade rotor in heat exchange tube |
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| CN103217054A true CN103217054A (en) | 2013-07-24 |
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| CN201310151291XA Pending CN103217054A (en) | 2013-04-27 | 2013-04-27 | Porous screw blade rotor in heat exchange tube |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103411464A (en) * | 2013-08-05 | 2013-11-27 | 北京化工大学 | Through hole spring and helical blade rotor in heat exchange tube |
| CN103432981A (en) * | 2013-08-27 | 2013-12-11 | 北京化工大学 | Energy-saving high-efficiency self-cleaning polymerizing device |
| CN103736410A (en) * | 2013-12-16 | 2014-04-23 | 北京化工大学 | Blade-carrying perforate spheroidicity dynamic mixer used for pipeline |
| CN104236377A (en) * | 2014-05-15 | 2014-12-24 | 重庆天瑞化工设备股份有限公司 | Automatic fluid blender |
| CN104279912A (en) * | 2014-10-17 | 2015-01-14 | 中国石油大学(华东) | Screw link device and reinforced heat exchanging tube thereof |
| CN105115347A (en) * | 2015-07-27 | 2015-12-02 | 华中科技大学 | Flow-guiding plug-in device in heat exchange tube |
| CN106807268A (en) * | 2017-03-20 | 2017-06-09 | 北京化工大学 | Gas collection redistribution fin rotor in a kind of pipeline |
| CN108223263A (en) * | 2016-12-09 | 2018-06-29 | 安徽铸天成节能科技有限公司 | A kind of blade structure for wind driven generator based on laser micropore technology |
| CN109163595A (en) * | 2018-07-16 | 2019-01-08 | 哈尔滨工程大学 | A kind of rule ball porous media and the thermoexcell using the porous media |
| CN109186312A (en) * | 2018-10-23 | 2019-01-11 | 辽宁科技大学 | One kind can scale removal baffling plate heat dissipating device |
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| CN102080944A (en) * | 2011-03-03 | 2011-06-01 | 北京华夏壹泰科技有限公司 | Heat exchange tube internal radial direction ladder-type rotor |
| CN202281546U (en) * | 2011-02-16 | 2012-06-20 | 湖南工业大学 | Heat-transfer pipe inner wedged pressure type helical wheel string automatic cleaning mechanism |
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2013
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Patent Citations (5)
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| CN2214239Y (en) * | 1995-01-10 | 1995-12-06 | 湘潭大学 | Flushing device for descaling and scale prevention of heat transfer tube |
| CN2833494Y (en) * | 2005-10-10 | 2006-11-01 | 黄伟 | Rotor type self-cleaning enhanced heat transfer device |
| CN101968332A (en) * | 2010-09-20 | 2011-02-09 | 北京华夏壹泰科技有限公司 | EHT (Extra High Tension) self-cleaning energy-saving environment-friendly device and manufacture method thereof |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103411467B (en) * | 2013-08-02 | 2015-04-01 | 北京化工大学 | Low driving rotor with turbulence core and in heat exchange tube |
| CN103411464A (en) * | 2013-08-05 | 2013-11-27 | 北京化工大学 | Through hole spring and helical blade rotor in heat exchange tube |
| CN103411464B (en) * | 2013-08-05 | 2015-02-18 | 北京化工大学 | Through hole spring and helical blade rotor in heat exchange tube |
| CN103432981A (en) * | 2013-08-27 | 2013-12-11 | 北京化工大学 | Energy-saving high-efficiency self-cleaning polymerizing device |
| CN103432981B (en) * | 2013-08-27 | 2015-05-27 | 北京化工大学 | Energy-saving high-efficiency self-cleaning polymerizing device |
| CN103736410B (en) * | 2013-12-16 | 2015-05-13 | 北京化工大学 | Blade-carrying perforate spheroidicity dynamic mixer used for pipeline |
| CN103736410A (en) * | 2013-12-16 | 2014-04-23 | 北京化工大学 | Blade-carrying perforate spheroidicity dynamic mixer used for pipeline |
| CN104236377A (en) * | 2014-05-15 | 2014-12-24 | 重庆天瑞化工设备股份有限公司 | Automatic fluid blender |
| CN104279912A (en) * | 2014-10-17 | 2015-01-14 | 中国石油大学(华东) | Screw link device and reinforced heat exchanging tube thereof |
| CN105115347A (en) * | 2015-07-27 | 2015-12-02 | 华中科技大学 | Flow-guiding plug-in device in heat exchange tube |
| CN105115347B (en) * | 2015-07-27 | 2017-04-12 | 华中科技大学 | Flow-guiding plug-in device in heat exchange tube |
| CN108223263A (en) * | 2016-12-09 | 2018-06-29 | 安徽铸天成节能科技有限公司 | A kind of blade structure for wind driven generator based on laser micropore technology |
| CN106807268A (en) * | 2017-03-20 | 2017-06-09 | 北京化工大学 | Gas collection redistribution fin rotor in a kind of pipeline |
| CN106807268B (en) * | 2017-03-20 | 2023-09-01 | 北京化工大学 | Air collecting and redistributing wing rotor in pipeline |
| CN109163595A (en) * | 2018-07-16 | 2019-01-08 | 哈尔滨工程大学 | A kind of rule ball porous media and the thermoexcell using the porous media |
| CN109186312A (en) * | 2018-10-23 | 2019-01-11 | 辽宁科技大学 | One kind can scale removal baffling plate heat dissipating device |
| CN109186312B (en) * | 2018-10-23 | 2023-09-26 | 辽宁科技大学 | Heat radiator with scale-removing baffle plate |
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Application publication date: 20130724 |