CN1206507C - Axial positioning device of heat transfer pipe internal rotation cleaning element - Google Patents
Axial positioning device of heat transfer pipe internal rotation cleaning element Download PDFInfo
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- CN1206507C CN1206507C CN 02139601 CN02139601A CN1206507C CN 1206507 C CN1206507 C CN 1206507C CN 02139601 CN02139601 CN 02139601 CN 02139601 A CN02139601 A CN 02139601A CN 1206507 C CN1206507 C CN 1206507C
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- cleaning element
- heat
- transfer pipe
- bearing block
- heat transfer
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Abstract
The present invention relates to an axial positioning device of a rotary cleaning element in a heat transfer tube. A helical flow channel is formed by a flow deflector and a wall attachment cylinder which are arranged on a bearing seat, and a heat transfer tube wall; heat transfer fluid which enters the tube forms fast rotational flow with a large radius when passing through the helical flow channel, and directly pushes the rotary cleaning element to generate a large dynamic force moment superimposed on an original autorotation force moment of the cleaning element in the same direction, so that a working force moment can be increased to more than three times of an original working force moment, and the flow velocity in the tube, which is needed to drive the cleaning element to carry out autorotation, is reduced by more than 60%. Consequently, an autorotation type cleaning and scale prevention technology can be widely applied to all kinds of array tube type heat transfer equipment whose flow velocity is low. The nozzle fixing device is also matched with an adjusting disk which can be used for improving the uniformity of the liquid inlet amount of each heat transfer tube and improving the heat transfer efficiency, and the adjusting disk has little resistance. Therefore, the application range is very wide.
Description
Technical field
What the present invention relates to is the axial direction positioning device of rotation cleaning element in a kind of heat-transfer pipe.It is applicable to the various shell and tube heat-transfer equipments that online rotation is cleaned, as heat exchanger, condenser, evaporimeter etc.
Background technology
U.S. Pat 4174750 and Chinese patent literature CN2214239Y disclose the cleaning device in a kind of heat-transfer pipe, and it comprises rotation cleaning element in heat-transfer pipe, the pipe, rotates the fixture of cleaning element at the liquid feeding end of heat-transfer pipe.The dirt of sweeping inside pipe wall is scraped in the rotation under the drive of intraductal heat transfer fluid of rotation cleaning element, has function online, automatic, the continuous wash antiscale; Flow because the guide functions of rotation cleaning element makes liquid make helix, the perturbation action that tube fluid is flowed is strengthened the convection heat transfer' heat-transfer by convection in the pipe again.But, structurally there is such defective in the mouth of pipe fixture of rotation cleaning element: do not have the convection cell inlet to flow to and carry out necessary guiding, before becoming a mandarin liquid cleaning element contacting with rotation, can produce eddy flow in various degree in the heat-transfer pipe porch, and must be identical with the hand of spiral of rotation cleaning element according to resistance minimum principle eddy flow direction.By the system of material points moment of momentum theorem as can be known, its result must be that the spin moment that causes rotating cleaning element reduces, and being difficult under the operating mode that this technology is not high at flow velocity or the Fouling Cleaning resistance ratios is bigger used.
Summary of the invention
Technical problem to be solved by this invention is that existing mouth of pipe fixture does not weaken problem to the rotation cleaning element kinetic moment that the guiding fluid that becomes a mandarin causes, the axial direction positioning device of rotation cleaning element in a kind of heat-transfer pipe is proposed, can lead forms the work moment that reverse eddy flow import strengthens the rotation cleaning element, can be widely used in low flow velocity or the bigger heat-transfer equipment of Fouling Cleaning resistance so that automatic rotary is cleaned preventing fouling.
The purpose of patent of the present invention is achieved through the following technical solutions:
The axial direction positioning device of rotation cleaning element in a kind of heat-transfer pipe, the sliding bearing that it is made up of bearing block, bearing body and bistrique, rotating shaft.Bearing block is fixed on the entrance point of heat-transfer pipe, and design has flow deflector and attached wall tube on the bearing block.The quantity of flow deflector is 1～6, and the hand of spiral of flow deflector is identical with the direction of rotation of cleaning element, and the pitch angle alpha will of flow deflector is 20 °～60 ° scope.Bearing block can be worn the adjustment disk of regulating heat-transfer pipe feed liquor amount size.The rotating shaft afterbody is connected with the rotation cleaning element, and the head of rotating shaft is that helicitic texture is connected with bistrique, and the direction of screw thread is opposite with the direction of rotation of cleaning element.Rotating shaft is by the bearing body axial restraint, and bearing body is assembled on the bearing block.Bearing body can be a split-type structural, also can be and the bearing block integrative-structure.
During the heat-transfer equipment operation, hydraulic fluid in the heat-transfer pipe is through the attached wall tube by bearing block, flow deflector, the common helical flow path that constitutes of heat transfer tube wall becomes a mandarin, and the back is direct to be dashed when pushing away the rotation cleaning element, not only flow velocity is accelerated at double, and the average eddy flow radius of helical flow also enlarges markedly, form bigger inlet towards moment of thrust, superpose in the same way with the original spin moment of rotation cleaning element, it is many to make the operational forces moment ratio of rotating cleaning element originally increase twice, thereby the velocity in pipes lower limit that the cleaning element rotation requires descends more than 60%, reaches to make the rotation cleaning technique can be at low flow velocity, or the purpose of extensive use under the bigger operating mode of Fouling Cleaning resistance ratios.
Description of drawings
Fig. 1 is the structural representation of mouth of pipe axial direction positioning device of the present invention.
Fig. 2 is the mouth of pipe bearing block structure schematic diagram of regulating uniform function that has of the present invention.
Fig. 3 is an adjustment disk structural representation of the present invention.
Fig. 4 is an integrated bearing holder structure schematic diagram of the present invention.
1. bistriques, 2. bearing bodies, 3. bearing blocks, 4. flow deflectors, 5 attached wall tube 6. rotating shafts 7. heat-transfer pipes 8. rotation cleaning elements 9. bearing block inlet openings 10. locator cards 11. adjustment disks 12 adjustment disk inlet openings 13. positioning ports among the figure
The specific embodiment
Specific embodiments below in conjunction with description of drawings patent of the present invention:
The axial direction positioning device of rotation cleaning element is seen Fig. 1 in the heat-transfer pipe of the present invention, and bearing block 3 is installed in the arrival end of heat-transfer pipe 7, and bearing block 3 is provided with spiral flow deflector 4 and attached wall tube 5.
The hand of spiral of flow deflector 4 identical with the direction of rotation of rotating cleaning element 8 (then opposite) with the hand of spiral of rotation cleaning element 8.The pitch angle alpha will of flow deflector 4 is in the scope of 60 ° of 20 ° of ∽, and preferred version is that the lower helical angle value of velocity in pipes is littler, and the flow velocity that comes out through spiral flow deflector 4 just increases greatlyyer.The quantity of flow deflector 4 is 1-6, and preferred version is that the caliber of heat-transfer pipe 7 is healed large stretch of number also more greatly.
The ratio d/D of the outside diameter d of the attached wall tube 5 of bearing block 3 and the inside diameter D of heat-transfer pipe 7 is in 0.2 ∽, 0.8 scope, its effect be by increase become a mandarin liquid the eddy flow radius, reduce the entrance channel area and improve flow velocity, increase inlet to rotation cleaning element 8 towards pushing torque.
The afterbody of rotating shaft 6 is that crotch shape is connected with rotation cleaning element 8, and head is that screw thread is connected with bistrique 1.The hand of spiral of rotating shaft 6 with the rotation cleaning element direction of rotation in the same way (with the rotation cleaning element 8 the hand of spiral then opposite) prevent loose or dislocation so that the moment of friction of utilizing bistrique 1 to be subjected to remains self-tightening.
During the equipment operation, import liquid forms eddy flow under the effect of spirality flow deflector 4, directly dashes in heat-transfer pipe 7 porch to push away 8 rotations of rotation cleaning element, increases exponentially the work moment of rotation cleaning element 8 with this.And under the operating mode of vertical membranaceous stream, another effect of attached wall tube 5 is to make the liquid of import can both be limited in well that line is membranaceous in the shape of a spiral in the annular gap runner between heat-transfer pipe 7 and the attached wall tube 5 flows downward, avoid partially liq directly dirty in the center of heat-transfer pipe 7, reduce this invalid traffic that does not contact, improve heat-transfer effect with the tube wall of heat-transfer pipe 7.
Wear the bearing block 3 (seeing Fig. 2 and Fig. 3) of feed liquor amount adjustment disk 11.The different couplings of relative position between the inlet opening 12 by changing feed liquor amount adjustment disk 11 and the inlet opening 9 of bearing block 3, the feed liquor amount size of regulating heat-transfer pipe 7 improves the uniformity of each heat-transfer pipe 7 feed liquor amount of heat-transfer equipment with this.The positioning port 13 above the dependence feed liquor amount adjustment disk 11 and the assembling of the locator card 10 above the bearing block 3 cooperate, prevent feed liquor amount adjustment disk 11 the washing away loosening of liquid body and change relative position gradually in running, the even situation that regulates can be kept in running for a long time.
Claims (4)
1. the axial direction positioning device of rotation cleaning element in the heat-transfer pipe, the sliding bearing and the rotating shaft (6) that have bearing block (3), bearing body (2) and bistrique (1) to form, it is characterized in that: bearing block (3) is fixed on the entrance point of heat-transfer pipe (7), bearing block (3) is gone up design flow deflector (4) and attached wall tube (5), the quantity of flow deflector (4) is 1～6, the hand of spiral of flow deflector (4) is identical with the direction of rotation of rotation cleaning element (8), and the pitch angle alpha will of flow deflector (4) is 20 °～60 ° scope.
2. the axial direction positioning device of rotation cleaning element in the heat-transfer pipe according to claim 1, it is characterized in that bearing block (3) can with bearing body (2) integrative-structure, also can be split-type structural.
3. the axial direction positioning device of rotation cleaning element in the heat-transfer pipe according to claim 1, the afterbody that it is characterized in that rotating shaft (6) is connected with rotation cleaning element (8), the head of rotating shaft (6) is threaded with bistrique (1), the direction of screw thread must be opposite with the direction of rotation of rotation commentaries on classics cleaning element (8), rotating shaft (6) is by bearing body (2) axial restraint, and bearing body (2) is assembled on the bearing block (3).
4. the axial direction positioning device of rotation cleaning element in the heat-transfer pipe according to claim 1, it is characterized in that bearing block (3) wears the adjustment disk (11) of regulating heat-transfer pipe feed liquor amount size, the difference of relative position is coupled between the inlet opening (12) that can be by changing adjustment disk (11) and the inlet opening (9) of bearing block (3), regulate the feed liquor amount size of this heat-transfer pipe (7), improve what uniformity of each heat-transfer pipe of heat-transfer equipment (7) feed liquor amount, and rely on positioning port 13 and the locator card 10 on the bearing block 3 on the adjustment disk 11 to prevent that washing away loosening maintenance the in the running from remaining unchanged for a long period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139601 CN1206507C (en) | 2002-09-13 | 2002-09-13 | Axial positioning device of heat transfer pipe internal rotation cleaning element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139601 CN1206507C (en) | 2002-09-13 | 2002-09-13 | Axial positioning device of heat transfer pipe internal rotation cleaning element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1482432A CN1482432A (en) | 2004-03-17 |
| CN1206507C true CN1206507C (en) | 2005-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02139601 Expired - Fee Related CN1206507C (en) | 2002-09-13 | 2002-09-13 | Axial positioning device of heat transfer pipe internal rotation cleaning element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1206507C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839670A (en) * | 2010-05-27 | 2010-09-22 | 北京化工大学 | Inner diversion type self-tightening hanging part of heat exchange tube |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506611B (en) * | 2006-12-31 | 2011-05-11 | 北京化工大学 | A self-cleaning enhanced heat transfer device inside a tube |
| CN102305559B (en) * | 2009-06-03 | 2013-05-08 | 北京先锋创新科技发展有限公司 | Shell-and-tube heat exchanger with stock pusher |
| CN102128560B (en) * | 2011-04-19 | 2012-10-17 | 北京化工大学 | Twisted belt type pendant in heat exchange pipe |
| HK1189328A2 (en) * | 2013-09-30 | 2014-05-30 | Hong Kong Modern Technology Ltd | Fluid heat exchanger and energy recovery device |
| 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 |
-
2002
- 2002-09-13 CN CN 02139601 patent/CN1206507C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839670A (en) * | 2010-05-27 | 2010-09-22 | 北京化工大学 | Inner diversion type self-tightening hanging part of heat exchange tube |
| CN101839670B (en) * | 2010-05-27 | 2012-04-18 | 北京化工大学 | Inner diversion type self-tightening hanging part of heat exchange tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1482432A (en) | 2004-03-17 |
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