CN104154805A - Interphase blade self-oscillation rotor - Google Patents
Interphase blade self-oscillation rotor Download PDFInfo
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- CN104154805A CN104154805A CN201410385525.1A CN201410385525A CN104154805A CN 104154805 A CN104154805 A CN 104154805A CN 201410385525 A CN201410385525 A CN 201410385525A CN 104154805 A CN104154805 A CN 104154805A
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- interphase
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Abstract
The invention discloses an interphase blade self-oscillation rotor which is mainly composed of a left-handed and right-handed rotation blade interphase rotor and a spiral spring. The left-handed and right-handed rotation blade interphase rotor is composed of blades and a center shaft. The blades and the center shaft are machined into a whole. The center shaft penetrates through the middle portion of the left-handed and right-handed rotation blade interphase rotor and is provided with an axial through hole. A boss is arranged at the front end of the center shaft. An inner taper hole is formed in the tail end of the center shaft. The blades are composed of the left-handed rotation blades and the right-handed rotation blades. The outer diameter of the spiral spring is smaller than that of a heat exchange pipe. The inner diameter of the spiral spring is larger than the outer diameter of the left-handed and right-handed rotation blade interphase rotor which is coated with the spiral spring. Stopping sheets adhere to the ends of the blades close to the two ends. The spiral spring is limited among the blades through the stopping sheets. According to the interphase blade self-oscillation rotor, the spiral spring is driven by fluctuant liquid to oscillate, the oscillating spring can break a boundary layer, the heat transfer effect can be enhanced, the oscillating spiral spring can scrape scale on the pipe wall of the heat exchange pipe, and therefore functions of scale prevention and scale removal can be achieved.
Description
Technical field
The present invention relates to the interior inserted component of the augmentation of heat transfer in heat exchanger tube in a kind of shell-and-tube heat exchanger equipment and antiscale snaking, relate in particular to a kind of with liquid carrying in heat exchange tube for power, play the alternate blade self-oscillation rotor of augmentation of heat transfer and antiscaling, descaling effect.
Technical background
Shell-and-tube heat exchanger is as the heat-exchange apparatus being most widely used in the various fields such as oil, chemical industry, thermoelectricity, nuclear power, metallurgy, light industry, aviation and boats and ships vehicle, but the heat exchange efficiency of shell-and-tube heat exchanger is not high, and ubiquity scale problems in heat exchanger tube, cause shell-and-tube heat exchanger can not carry out fully effective heat exchange.Dirt not only can increase thermal resistance, reduces heat transfer efficiency, also can increase the flow resistance of pipeline, sometimes even there will be the phenomenons such as plugging, has seriously affected equipment security of operation, produces great energy waste.Heat exchanger tube dirt can cause heat transfer deterioration, and circulation area reduces, and circulating resistance increases, and increases initial outlay, and the serious underdeposit corrosion that also there will be, causes very large threat to the safety of equipment.To carry out stop cleaning to the processing method of dirt now; adopt the cleaning ways such as giant cleaning or pickling, not only cause the waste of manpower and materials, the waste water of cleaning also can cause the pollution of environment; and stop cleaning has also affected the continuous production of factory, has reduced production efficiency.People attempt to invent a kind of on-line cleaning technology always, one of them is exactly to utilize fluid promotion spiral band to rotate to realize the method for online automatic desludging, for example Chinese patent name is called " the spiral enhanced heat exchange of dual turbulent and automatic descaling apparatus (CN1424554) ", but because spiral band is a whole band, heat exchanger tube is straight not after processing is installed, between spiral band and heat exchanger tube inwall, can produce inhomogeneous gap, the scale removal effect of tie is little and inhomogeneous like this, and descale effect is undesirable.China Patent No. is ZL200520127121.9 afterwards, the patent application that denomination of invention is " rotator type cleaning and heat-transfer enhancing device " is disclosed, this device is to be 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, has centre bore on rotor; 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.But this rotor is single rotation direction spirality, although certain invigoration effect is played in the heat transfer of heat exchanging liquid in pipe, augmentation of heat transfer effect is subject to certain restrictions; Rotor adopts flow-disturbing to impact the mode of tube wall to carry out antiscale, just have certain effect to delaying fouling, but it can not snaking, and rotor running speed under the promotion of liquid is very fast, can not accurately control the speed of rotor rotation.
Summary of the invention
The object of the invention is to have designed a kind of novel rotor that strengthens heat exchange efficiency and antiscaling, descaling for addressing the above problem.Novel rotor is made up of with helical spring the alternate rotor of left-right rotary blade, the blade of the alternate rotor of left-right rotary blade is by left-handed blade and dextrorotation blade is alternate forms, the disturbance of alternate blade energy enhance fluid when running, play the effect of augmentation of heat transfer, and the dirt of the fluid heat exchanging tube wall of disturbance impacts, and plays the effect of antiscaling, descaling.Helical spring is coated on rotor outside, be connected with rotor blade, in the time of operation, in the time that fluid fluctuates, helical spring meeting porpoise, the spring of vibration is broken boundary layer, plays the effect of augmentation of heat transfer, and the vibration meeting of spring, with heat exchange tube wall, certain friction occurs, can play heat exchanger tube and prevent the effect of scale removal.
For the technical scheme that addresses the above problem employing is: alternate blade self-oscillation rotor, mainly formed by the alternate rotor of left-right rotary blade and helical spring, the alternate rotor of left-right rotary blade is by blade, central shaft composition, blade and central shaft are processed into an entirety, central shaft is through the middle part of the alternate rotor of left-right rotary blade, central shaft has axially extending bore, the slightly larger in diameter of through hole is in the external diameter of back shaft, the front end of central shaft has boss, center the tip of the axis has internal taper hole, the radial dimension of boss is slightly less than the radial dimension of internal taper hole, make the adjacent alternate rotor of left-right rotary blade by boss and internal taper hole assembling bunchiness group, blade is made up of left-handed blade and dextrorotation blade, the axial length of left-handed blade is greater than the axial length of dextrorotation blade, spring outside coil diameter is less than heat exchanger tube external diameter, and internal diameter is greater than the external diameter of the alternate rotor of left-right rotary blade, and helical spring is coated on the alternate rotor of left-right rotary blade, the bonding catch in end of the blade at close two ends, and helical spring is limited between blade by catch.When operation, to be subject to the impulsive force of liquid contrary with the impulsive force that dextrorotation blade is subject to for left-handed blade, and the size of impulsive force is directly proportional with the size of blade, because the radical length of blade is identical, helical pitch is identical, when the axial length of left-handed blade is greater than the axial length of dextrorotation blade, what rotor was subject to makes a concerted effort to produce an axial moment that left-handed blade is leading, thereby drive rotor turns right.In the time need to controlling the rotating speed of rotor and turn to, can change the left-handed blade of rotor and the proportionate relationship of dextrorotation blade and control accurately the rotational characteristic of rotor.In the time that rotor rotates, left-handed blade is subject to the impact of liquid and rotates, drive liquid in rotation, due to dextrorotation blade and left-handed blade rotating in same direction, the liquid of left-handed blade disturbance is played to the effect that again changes flow direction, liquid less turbulence is strengthened, and promote mixing and exchange between center liquid and boundary layer liquid, strengthen the effect of conducting heat; And turbulence hydraulic shock tube wall, can prevent the deposition of dirt at heat exchanger tube tube wall, and the existing dirt of heat exchanging tube wall has denudation.Between helical spring rotor alternate with left-right rotary blade, be connected by connecting portion, on the left-handed blade of connecting portion in rotor.Because the gap between helical spring and heat exchanger tube tube wall is very little, in the time that liquid flows through the gap between heat exchanger tube and helical spring, flow rate of liquid can increase, thereby increases washing away of liquid heat exchanging tube wall, prevents the fouling of heat exchanger tube tube wall.Liquid in pipe in service there will be wave phenomenon, under the drive of wavy liquid, there is vibration in helical spring, because spring tube wall is very near, the spring of vibration can destroy boundary layer, strengthen the effect of augmentation of heat transfer, and the dirt of the helical spring heat exchanging tube wall of vibration has scraping effect, thereby has the effect of antiscaling, descaling.
The alternate blade self-oscillation of the present invention rotor, the number of left-handed blade is 1,2 or multiple; Left-handed blade is 1:1,2:1,1:2 equal proportion relation with the number ratio of dextrorotation blade.
The alternate blade self-oscillation of the present invention rotor, helical spring axial length is less than the axial length of rotor.
The alternate blade self-oscillation of the present invention rotor, between helical spring and helical blade, can also adopt spot welding, local riveted joint or the local connected mode such as bonding, under these modes, together with helical spring rotor alternate with left-right rotary blade, rotate, the beating and rotate common left and right on tube wall of spring, scale removal, scale inhibition effect are more remarkable.
The alternate blade self-oscillation of the present invention rotor, by macromolecular material, polymer-based composite, metal or ceramic material.For reducing the excessive wear of spring to tube wall, the hardness of spring is less than the hardness of heat exchanger tube, or spring selects composite high-molecular material, and flexible is flexible again.
The invention has the beneficial effects as follows: 1,, by controlling ratio and the length relation of left-handed blade and dextrorotation blade, control accurately the velocity of rotation of rotor.2, left-handed blade is subject to the impact rotation of liquid, drive liquid in rotation, dextrorotation blade liquid plays the effect that again changes flow direction, strengthens liquid less turbulence, and promote mixing and exchange between center liquid and boundary layer liquid, strengthen the effect of augmentation of heat transfer.3, the gap between helical spring and heat exchanger tube tube wall is very little, and in the time that liquid flows through the gap between heat exchanger tube and helical spring, flow rate of liquid can increase, thereby increases washing away of liquid heat exchanging tube wall, prevents the fouling of heat exchanger tube tube wall.4, there is vibration in helical spring under the drive of wavy liquid, and the spring of vibration can be broken boundary layer, strengthens the effect of augmentation of heat transfer, and the dirt of the helical spring heat exchanging tube wall of vibration has scraping effect, thereby have the effect of antiscaling, descaling.
Brief description of the drawings
Fig. 1 is the main TV structure figure of the alternate blade self-oscillation of the present invention rotor.
Fig. 2 is the three-dimensional structure schematic diagram of the alternate blade self-oscillation of the present invention rotor.
Fig. 3 is a specific embodiment of the alternate blade self-oscillation of the present invention rotor.
In figure, 1-left-handed blade, 2-helical spring, the alternate rotor of 3-left-right rotary blade, 4-dextrorotation blade, 5-central shaft, 6-internal taper hole, 7-catch, 8-boss, 9-locating part, 10-bracing frame, 11-alternate blade self-oscillation rotor, 12-heat exchanger tube, 13-back shaft.
Detailed description of the invention
Fig. 3 is a specific embodiment of the present invention, alternate blade self-oscillation rotor strengthening and heat transferring device comprises the alternate blade self-oscillation of the present invention rotor 11, locating part 9, heat exchanger tube 12, bracing frame 10 and back shaft 13, the alternate blade self-oscillation of several the present invention rotor 11 is cascaded by back shaft 13, 11 of alternate blade self-oscillation rotors match by the cone boss 8 of front end and the internal taper hole 6 of the end of adjacent rotor, central shaft 5 is installed on back shaft 13, multiple alternate blade self-oscillation rotors 11 are divided into a few group rotor strings by locating part 9, bracing frame 10 is fixed on heat exchanger tube 12 two ends, the two ends of back shaft 13 are separately fixed on bracing frame 10.Alternate blade self-oscillation rotor 11 is made up of the alternate rotor 3 of left-right rotary blade and helical spring 2, alternate rotor 3 blades of left-right rotary blade are made up of left-handed blade 1 and dextrorotation blade 4, the axial length of left-handed blade 1 is greater than dextrorotation blade 4, helical spring 2 external diameters are less than heat exchanger tube 12 external diameters, internal diameter is greater than the external diameter of the alternate rotor 3 of left-right rotary blade, helical spring 2 is coated on the alternate rotor 3 of left-right rotary blade, is kept off on blade by catch 7, sees shown in Fig. 1 and Fig. 2.When operation, to be subject to the impulsive force of liquid contrary with the impulsive force that dextrorotation blade 4 is subject to for left-handed blade 1, and the size of impulsive force is directly proportional with the size of blade, because the radical length of left-handed blade 1 and dextrorotation blade 4 is identical and helical pitch is identical, when the axial length of left-handed blade 1 is greater than the axial length of dextrorotation blade 4, what rotor was subject to makes a concerted effort to produce one by the leading axial moment of left-handed blade 1, thereby can make alternate blade self-oscillation rotor 11 rotate.In the time need to controlling the rotating speed of alternate blade self-oscillation rotor 11 and turn to, can change the left-handed blade 1 of alternate blade self-oscillation rotor 11 and the proportionate relationship of dextrorotation blade 4 and control accurately the rotational characteristic of rotor.In the time that alternate blade self-oscillation rotor 11 rotates, left-handed blade 1 is subject to the impact of liquid and rotates, drive liquid in rotation, due to dextrorotation blade 4 and left-handed blade 1 rotating in same direction, liquid to left-handed blade 1 disturbance plays the effect that again changes flow direction, liquid less turbulence is strengthened, and promote mixing and exchange between heat exchanger tube 12 center liquid and boundary layer liquid, strengthen the effect of augmentation of heat transfer; And make turbulent flow impingement heat transfer pipe 12 tube walls, can prevent the deposition of dirt at heat exchanger tube 12 tube walls, and the existing dirt of exchange heat pipe 12 tube wall has denudation.Near the bonding catch 7 in end of the blade at two ends, helical spring 2 and by being limited by catch 7 between the alternate rotor 3 of left-right rotary blade.Because the gap between helical spring 2 and heat exchanger tube 12 tube walls is very little, in the time that liquid flows through between heat exchanger tube 12 and helical spring 2 gap, the flow velocity of liquid increases, thereby increases the souring of liquid exchange heat pipe 12 walls, prevents the fouling of heat exchanger tube 12 tube walls.Liquid in heat exchanger tube 12 in service there will be wave phenomenon, under the drive of liquid, there is vibration in helical spring 2, the spring of vibration can be broken boundary layer, strengthen the effect of augmentation of heat transfer, and the dirt that the helical spring 2 of vibration is exchanged heat pipe 12 tube walls has scraping effect, thereby has the effect of antiscaling, descaling.
Claims (3)
1. alternate blade self-oscillation rotor, it is characterized in that: mainly formed by the alternate rotor of left-right rotary blade and helical spring, the alternate rotor of left-right rotary blade is by blade, central shaft composition, blade and central shaft are processed into an entirety, central shaft is through the middle part of the alternate rotor of left-right rotary blade, central shaft has axially extending bore, the slightly larger in diameter of through hole is in the external diameter of back shaft, the front end of central shaft has boss, center the tip of the axis has internal taper hole, the radial dimension of boss is slightly less than the radial dimension of internal taper hole, blade is made up of left-handed blade and dextrorotation blade, the axial length of left-handed blade is greater than the axial length of dextrorotation blade, spring outside coil diameter is less than heat exchanger tube external diameter, helical spring internal diameter is greater than the external diameter of the alternate rotor of left-right rotary blade, helical spring is coated on the alternate rotor of left-right rotary blade, the bonding catch in end of the blade at close two ends, and helical spring is limited between blade by catch.
2. alternate blade self-oscillation rotor according to claim 1, is characterized in that: the number of left-handed blade or dextrorotation blade is respectively 1,2 or multiple; Left-handed blade is 1:1,2:1 or 1:2 equal proportion relation with the number ratio of dextrorotation blade.
3. alternate blade self-oscillation rotor according to claim 1, is characterized in that: between helical spring and helical blade, can also adopt spot welding, local riveted joint or the local connected mode such as bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410385525.1A CN104154805A (en) | 2014-08-07 | 2014-08-07 | Interphase blade self-oscillation rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410385525.1A CN104154805A (en) | 2014-08-07 | 2014-08-07 | Interphase blade self-oscillation rotor |
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| Publication Number | Publication Date |
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| CN104154805A true CN104154805A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410385525.1A Pending CN104154805A (en) | 2014-08-07 | 2014-08-07 | Interphase blade self-oscillation rotor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260703A (en) * | 2019-05-31 | 2019-09-20 | 淮南威凯机械设备有限公司 | A kind of idle call inner screw thread copper pipe |
| CN111076601A (en) * | 2019-12-12 | 2020-04-28 | 中国石油大学(华东) | Corrosion reduction mechanism with outlet spiral guide fins |
| CN111219871A (en) * | 2018-11-26 | 2020-06-02 | 宁波方太厨具有限公司 | Heat exchanger and gas water heater with same |
| CN112923778A (en) * | 2021-02-08 | 2021-06-08 | 广东万和新电气股份有限公司 | Turbulent flow piece, heat exchange assembly and heat exchange device |
| CN113899228A (en) * | 2021-10-12 | 2022-01-07 | 湖南有色金属职业技术学院 | Shell and tube heat exchanger |
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| CN101413769A (en) * | 2008-08-04 | 2009-04-22 | 清华大学 | Subsection rotating multi-head spring type self-cleaning reinforced heat exchanger |
| CN101532797A (en) * | 2009-04-16 | 2009-09-16 | 上海理工大学 | Enhanced heat transfer unit of self-drive periodically brushing boundary layer fracture in heat exchange tube |
| CN101551214A (en) * | 2008-04-03 | 2009-10-07 | 北京化工大学 | Rotating piece type automatic-cleaning and heat-transfer enhancing device |
| CN201583184U (en) * | 2009-12-16 | 2010-09-15 | 北京化工大学 | Combined rotor provided with blades crossed in rotary direction and arranged in heat exchange tube |
| CN103217055A (en) * | 2013-05-02 | 2013-07-24 | 北京化工大学 | Opposite-rotation-direction combined rotor in heat exchange tube |
| CN103411468A (en) * | 2013-08-05 | 2013-11-27 | 北京化工大学 | Center spring and helical blade rotor in heat exchange tube |
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2014
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Patent Citations (7)
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| CN2681074Y (en) * | 2004-02-20 | 2005-02-23 | 株洲工学院帅科机械清洗研究所 | Dirt on-line automatic cleaning hydrodynamic plastic clad helix for heat transferring pipe |
| CN101551214A (en) * | 2008-04-03 | 2009-10-07 | 北京化工大学 | Rotating piece type automatic-cleaning and heat-transfer enhancing device |
| CN101413769A (en) * | 2008-08-04 | 2009-04-22 | 清华大学 | Subsection rotating multi-head spring type self-cleaning reinforced heat exchanger |
| CN101532797A (en) * | 2009-04-16 | 2009-09-16 | 上海理工大学 | Enhanced heat transfer unit of self-drive periodically brushing boundary layer fracture in heat exchange tube |
| CN201583184U (en) * | 2009-12-16 | 2010-09-15 | 北京化工大学 | Combined rotor provided with blades crossed in rotary direction and arranged in heat exchange tube |
| CN103217055A (en) * | 2013-05-02 | 2013-07-24 | 北京化工大学 | Opposite-rotation-direction combined rotor in heat exchange tube |
| CN103411468A (en) * | 2013-08-05 | 2013-11-27 | 北京化工大学 | Center spring and helical blade rotor in heat exchange tube |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219871A (en) * | 2018-11-26 | 2020-06-02 | 宁波方太厨具有限公司 | Heat exchanger and gas water heater with same |
| CN111219871B (en) * | 2018-11-26 | 2021-07-23 | 宁波方太厨具有限公司 | Heat exchanger and gas water heater with same |
| CN110260703A (en) * | 2019-05-31 | 2019-09-20 | 淮南威凯机械设备有限公司 | A kind of idle call inner screw thread copper pipe |
| CN111076601A (en) * | 2019-12-12 | 2020-04-28 | 中国石油大学(华东) | Corrosion reduction mechanism with outlet spiral guide fins |
| CN111076601B (en) * | 2019-12-12 | 2021-05-11 | 中国石油大学(华东) | Corrosion reduction mechanism with outlet spiral guide fins |
| CN112923778A (en) * | 2021-02-08 | 2021-06-08 | 广东万和新电气股份有限公司 | Turbulent flow piece, heat exchange assembly and heat exchange device |
| CN113899228A (en) * | 2021-10-12 | 2022-01-07 | 湖南有色金属职业技术学院 | Shell and tube heat exchanger |
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Application publication date: 20141119 |