CN2572329Y - Automatic cleaning for inner low flow speed heat conduction pipe and heat conduction reinforced tooth shape turning band - Google Patents
Automatic cleaning for inner low flow speed heat conduction pipe and heat conduction reinforced tooth shape turning band Download PDFInfo
- Publication number
- CN2572329Y CN2572329Y CN 02277261 CN02277261U CN2572329Y CN 2572329 Y CN2572329 Y CN 2572329Y CN 02277261 CN02277261 CN 02277261 CN 02277261 U CN02277261 U CN 02277261U CN 2572329 Y CN2572329 Y CN 2572329Y
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- twisted strip
- low flow
- heat
- heat conduction
- flow velocity
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Abstract
The utility model relates to an automatic cleaning and heat transfer reinforcing tooth-shaped turning band in a low flow speed heat transferring pipe, which has the dual functions of automatic cleaning for scale prevention and heat transfer reinforcement in the heat transferring pipe. Reinforcing teeth are arranged on both sides of a spiral turning band at certain intervals, but the reinforcing teeth on the front and the back surfaces of the spiral turning band are respectively arranged on both sides of the centerlines of the front and the back surfaces. The counterforce with which fluid which is guided by the reinforcing teeth acts upon the spiral turning band is transversely and asymmetrically formed into an additional rotary moment which is superimposed with an original spin moment of a smooth and spiral turning band so that the spinning cleaning moment is increased by 277%. Therefore, the utility model can reliably spin to carry out cleaning for scale prevention in the low flow speed heat transferring pipe in which the flow speed of the fluid is about 0.35 m/s. Compared with the smooth and spiral turning band, the intensive disturbance of the reinforcing teeth enables the convection heat transfer coefficient is increased by about 30% on average. The technology can be widely applied to various pipe array type heat transferring equipment with low flow speed.
Description
The utility model relates to automatic the cleaning and heat conduction reinforced twisted strip with oblique teeth in a kind of low flow velocity heat-transfer pipe.Be particularly related to the automatic desludging scale prevention device of tubular heat exchanger.It is applicable to the various heat-transfer equipments of tubular structure, as heat exchanger, condenser, evaporimeter etc.
U.S. Pat 4174750 and Chinese patent literature CN2214239Y disclose the rotary automatic flushing device in a kind of heat-transfer pipe, and it is formed by the twisted strip that can rotate in heat-transfer pipe with the axial restraint device that an end of twisted strip is fixed on the heat-transfer pipe liquid feeding end.The dirt of sweeping inside pipe wall is scraped in twisted strip rotation under the drive of intraductal heat transfer fluid, has function online, automatic, the continuous wash antiscale; Flow in the shape of a spiral owing to the guide functions of twisted strip makes liquid, the convection heat transfer' heat-transfer by convection function in the pipe is strengthened.But said apparatus generally needs the flow velocity of liquid in pipe could to be driven and rotation when 1m/s is above, and present most of shell and tube heat-transfer equipment liquid in pipe is in the low flow rates operation of 0.4m/s-1.0m/s, and low flow velocity twisted strip kinetic moment down is too small and weak can not be certainly then can't use.
Technical problem to be solved in the utility model is the too little problem that can not rotation is difficult to use of the kinetic moment of existing twisted strip under low flow velocity, propose to clean automatically and heat conduction reinforced twisted strip with oblique teeth in a kind of low flow velocity heat-transfer pipe, can increase exponentially spin moment, can use down and heat conduction reinforced better effects if at low flow velocity (in the 0.4m/s-1.0m/s scope).
The technical solution of the utility model is: clean automatically and heat conduction reinforced twisted strip with oblique teeth in a kind of low flow velocity heat-transfer pipe, it is made up of twisted strip, reinforcement tooth, mouth of pipe fixture, heat-transfer pipe.Place the twisted strip and the heat-transfer pipe same length of the spiral sheet in the heat-transfer pipe.The two sides of twisted strip all is fixed with the reinforcement tooth of sheet, strengthen tooth and twisted strip surface be angle β, and the center line of twisted strip be angle α.A part is strengthened the side that tooth is arranged on the twisted strip center line, and another part is strengthened the opposite side that tooth is arranged on the reverse side of twisted strip and is positioned at center line.The reinforcement tooth staggers on the twisted strip two sides, equally spaced mode is arranged along its length.The addendum line of strengthening tooth has the complex of linear, camber line shape, broken line shape and broken line and camber line.Strengthen tooth and twisted strip all with the engineering plastics manufacturing of the tube wall that can not wear and tear.The connecting hole of the center of twisted strip one end is connected with rotating shaft, and the other end of rotating shaft is put and is axially fixed on the mouth of pipe fixture that is installed in heat-transfer pipe fluid inlet end.Twisted strip can be an overall structure, also can be formed by connecting by plurality of sections.
The utility model is owing to be provided with the reinforcement tooth on the twisted strip, liquid is after the entrance point inflow of heat-transfer pipe when operation, being subjected to strengthening stopping with guiding of tooth produces a normal direction component velocity vertical with the twisted strip face, and the liquid that is changed direction is simultaneously to the normal reaction of an equivalence of twisted strip effect.The twisted strip tow sides are subjected to the asymmetric normal reaction in the left and right sides, the twisted strip center line is formed an additional rotary power square, superpose in the same way with the original spin moment of twisted strip, the resultant moment that is produced can reach more than 3 times of smooth twisted strip spin moment, can the low flow velocity heat-transfer pipe of twisted strip about 0.35m/s in rotation carry out automatically and clean.Because the reinforcement tooth on the twisted strip makes fluid produce strong eddy current, the interior convection heat transfer' heat-transfer by convection effect of pipe of low flow velocity is further strengthened, higher by about 30% than the convective heat-transfer coefficient of smooth twisted strip.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the structural representation of interior cleaning automatically of a kind of low flow velocity heat-transfer pipe of the present utility model and heat conduction reinforced twisted strip with oblique teeth.
Fig. 2 is the front view that structural parameters are represented in the virtual flattening of twisted strip with oblique teeth of the present utility model.
Fig. 3 is that the structural parameters vertical view is represented in the virtual flattening of twisted strip with oblique teeth twisted strip of the present utility model.
Fig. 4 is the side view that structural principle is represented in the virtual flattening of twisted strip with oblique teeth of the present utility model.
Fig. 5 is the A-A profile that chuck angle β is represented in the virtual flattening of twisted strip with oblique teeth of the present utility model.
Fig. 6 is the profile of tooth figure of twisted strip with oblique teeth of the present utility model.
1. mouth of pipe fixtures, 2. rotating shafts, 3. twisted strip heads, 4. connecting holes, 5. twisted strips, 6. heat-transfer pipes 7. among the figure are strengthened working fluid 9. reaction forces 10. additional rotary power squares in tooth 8. pipes
Automatically clean and heat conduction reinforced twisted strip with oblique teeth in a kind of low flow velocity heat-transfer pipe, make with engineering plastics, width be slightly less than heat-transfer pipe 6 diameters, length and heat-transfer pipe 6 length and essentially identical, as to have connecting hole 4 spiral sheet twisted strip 5 place in the heat-transfer pipe 6.The connecting hole 4 of rotating shaft 2 and twisted strip head 3 joins, and the other end of rotating shaft 2 fixedly is axially fixed on the mouth of pipe fixture 1, and rotating shaft 2 circumferentially can rotate freely.
The surface-normal with twisted strip 5 that the two sides of twisted strip 5 all is fixed with sheet is angle β, is reinforcement tooth 7 angle α, that make with engineering plastics with the center line of twisted strip 5, angle α is-15 ° to+60 ° scopes, and angle β is-25 ° to+45 ° scopes.Strengthen the side that tooth 7 parts are positioned at twisted strip 5 center lines, another part is positioned at the reverse side of twisted strip 5 and is positioned at the opposite side of the center line of twisted strip 5, and double-edged reinforcement tooth 7 is equally spaced, staggered along the length direction of twisted strip 5.The spacing t that strengthens tooth 7 is 1.0-6.0 a times of heat-transfer pipe 6 diameters, and flow velocity is lower, and preferred distance t is littler.
Close twisted strip 5 center lines one end of height of strengthening tooth 7 is greater than the other end, and addendum line has the complex of linear, camber line shape, broken line shape and broken line and camber line, and preferable shape is the complex of broken line and camber line.
Claims (10)
1. clean automatically and heat conduction reinforced twisted strip with oblique teeth in one kind low flow velocity heat-transfer pipe, form by mouth of pipe fixture (1), reinforcement tooth (7) and twisted strip (5), it is characterized in that: the tow sides of described twisted strip (5) are provided with the reinforcement tooth (7) of sheet, described reinforcement tooth (a 7) part is positioned at a side of twisted strip (5) front center line, another part is positioned at the reverse side of twisted strip (5) and is positioned at the opposite side of center line, and described reinforcement tooth (7) is at tow sides, staggered along the equally spaced mode of twisted strip (5) length direction.
2. clean automatically and heat conduction reinforced twisted strip with oblique teeth in the low flow velocity heat-transfer pipe according to claim 1, it is characterized in that: the addendum line of described reinforcement tooth (7) is shaped as linear.
3. clean automatically and heat conduction reinforced twisted strip with oblique teeth in the low flow velocity heat-transfer pipe according to claim 1, it is characterized in that: the addendum line of described reinforcement tooth (7) is shaped as camber line shape.
4. clean automatically and heat conduction reinforced twisted strip with oblique teeth in the low flow velocity heat-transfer pipe according to claim 1, it is characterized in that: the addendum line of described reinforcement tooth (7) is shaped as broken line shape.
5. clean automatically and heat conduction reinforced twisted strip with oblique teeth in the low flow velocity heat-transfer pipe according to claim 1, it is characterized in that: the addendum line of described reinforcement tooth (7) is shaped as trapezoidal.
6. clean automatically and heat conduction reinforced twisted strip with oblique teeth in the low flow velocity heat-transfer pipe according to claim 1, it is characterized in that: the addendum line of described reinforcement tooth (7) is shaped as the complex of broken line and camber line.
7. according to cleaning automatically and heat conduction reinforced twisted strip with oblique teeth in claim 2,3,4, the 5 described low flow velocity heat-transfer pipes, it is characterized in that: the material of described reinforcement tooth (7) and twisted strip (5) is engineering plastics.
8. clean automatically and heat conduction reinforced twisted strip with oblique teeth in the low flow velocity heat-transfer pipe according to claim 6, it is characterized in that: the length of twisted strip (5) and heat-transfer pipe (6) are basic identical, are an overall structure, also can be formed by connecting by plurality of sections.
9. rotation type cleans and heat conduction reinforced twisted strip with oblique teeth in the pipe according to claim 1, and it is characterized in that: the angle β between the surface-normal of described reinforcement tooth (7) and twisted strip (5) is-25 ° to+45 ° scopes.
10. clean automatically and heat conduction reinforced twisted strip with oblique teeth in the low flow velocity heat-transfer pipe according to claim 1, it is characterized in that: angle α is-15 ° to+60 ° scopes between the center line of described reinforcement tooth (7) and twisted strip (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277261 CN2572329Y (en) | 2002-09-13 | 2002-09-13 | Automatic cleaning for inner low flow speed heat conduction pipe and heat conduction reinforced tooth shape turning band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277261 CN2572329Y (en) | 2002-09-13 | 2002-09-13 | Automatic cleaning for inner low flow speed heat conduction pipe and heat conduction reinforced tooth shape turning band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2572329Y true CN2572329Y (en) | 2003-09-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02277261 Expired - Lifetime CN2572329Y (en) | 2002-09-13 | 2002-09-13 | Automatic cleaning for inner low flow speed heat conduction pipe and heat conduction reinforced tooth shape turning band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2572329Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210791B (en) * | 2006-12-29 | 2010-11-10 | 北京华夏英蓝科技发展有限公司 | Self-cleaning reinforcement heat transfer low flow resistance rotor in heat-transfer pipe |
| CN104154806A (en) * | 2014-08-07 | 2014-11-19 | 北京化工大学 | Heat exchanging pipe inner heat transferring enhancing and scale-prevention device |
| CN107131785A (en) * | 2017-06-17 | 2017-09-05 | 福建德兴节能科技有限公司 | High-efficiency cyclone flow spoiler |
-
2002
- 2002-09-13 CN CN 02277261 patent/CN2572329Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210791B (en) * | 2006-12-29 | 2010-11-10 | 北京华夏英蓝科技发展有限公司 | Self-cleaning reinforcement heat transfer low flow resistance rotor in heat-transfer pipe |
| CN104154806A (en) * | 2014-08-07 | 2014-11-19 | 北京化工大学 | Heat exchanging pipe inner heat transferring enhancing and scale-prevention device |
| CN104154806B (en) * | 2014-08-07 | 2016-01-20 | 北京化工大学 | Augmentation of heat transfer and scale prevention device in a kind of heat exchanger tube |
| CN107131785A (en) * | 2017-06-17 | 2017-09-05 | 福建德兴节能科技有限公司 | High-efficiency cyclone flow spoiler |
| CN107131785B (en) * | 2017-06-17 | 2023-05-16 | 福建德兴节能科技有限公司 | High-efficiency rotational flow spoiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Designer after: Yu Xiumin Designer after: Li Dihui Designer after: Chen Hongqian Designer after: Guo Wenhua Designer after: Yu Tianlan Designer after: Wu Jinxiang Designer after: Jin Junjie Designer after: Liu Guiying Designer after: Peng Deqi Designer after: Wang Guoliang Designer after: Mei Yonghui Designer after: Wang Youkuan Designer before: Liu Guiying Designer before: Li Dihui Designer before: Chen Hongqian Designer before: Guo Wenhua Designer before: Yu Xiumin Designer before: Wu Jinxiang Designer before: Jin Junjie Designer before: Yu Tianlan Designer before: Peng Deqi Designer before: Mei Yonghui Designer before: Wang Guoliang Designer before: Wang Youkuan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: LIU GUIYING, YU XIUMIN, WU JINXIANG, JIN JUNJIE, YU TIANLAN, PENG DEQI, MEI YONGHUI, WANG GUOLIANG, WANG YOUKUAN, LI DIHUI, CHEN HONGQIAN, GUO WENHUA TO: YU XIUMIN YU TIANLAN WU JINXIANG JIN JUNJIE LIU GUIYING PENG DEQI WANG GUOLIANG MEI YONGHUI WANG YOUKUAN LI DIHUI CHEN HONGQIAN GUO WENHUA |
|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20051116 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |