CN101813438A - Self-cleaning enhanced heat transfer device by turbulent flow of axially reciprocating rotors - Google Patents
Self-cleaning enhanced heat transfer device by turbulent flow of axially reciprocating rotors Download PDFInfo
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- CN101813438A CN101813438A CN200910077379A CN200910077379A CN101813438A CN 101813438 A CN101813438 A CN 101813438A CN 200910077379 A CN200910077379 A CN 200910077379A CN 200910077379 A CN200910077379 A CN 200910077379A CN 101813438 A CN101813438 A CN 101813438A
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- heat
- transfer pipe
- fixed mount
- heat transfer
- tumbler
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- 238000004140 cleaning Methods 0.000 title claims abstract description 33
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000005060 rubber Substances 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 15
- 239000012530 fluid Substances 0.000 abstract description 7
- 230000002708 enhancing effect Effects 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 230000003416 augmentation Effects 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000036461 convulsion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The invention relates to a self-cleaning enhanced heat transfer device by turbulent flow of axially reciprocating rotors, and belongs to the fields of the enhanced heat transfer taking fluid as power in a heat transfer pipe and on-line automatic cleaning devices. The device comprises a left fixed mount, rotation pieces, support shafts, a movable limit piece, a fixed limit piece, a right fixed mount and elastic components, wherein the support shafts in the heat transfer pipe are divided into two sections, three sections or multiple sections; the elastic components are connected among the support shafts; the elastic components extend and retract axially under the condition that the acting force of a flowing medium is changed, so that the rotation pieces on the support shafts are driven to rotate and axially reciprocate in the heat transfer pipe; and the amplitude and rotational speed of the reciprocating motion of the rotation pieces are realized by regulating the pressure and flow rate of the medium. Impurities are not easy to deposit and remain on each part under the action of the disturbance; and the device can be used in a bent heat transfer pipe through the flexibility of the elastic components. Structures such as tooth-shaped grooves or hairbrushes and the like arranged on edges of the rotation pieces are favorable for improving the effects of inhibiting and removing scales and enhancing heat transfer.
Description
Technical field
The present invention relates to be used for augmentation of heat transfer and self-cleaning device in the shell-and-tube heat transmission equipment heat-transfer pipe, this device can be widely used in relating in particular to the field of doing the augmentation of heat transfer and the on-line auto-cleaning device of power with the heat-transfer pipe inner fluid on the shell-and-tube heat transmission equipment and consersion unit of industries such as thermal power generation, petrochemical industry, metallurgy, boats and ships, food, pharmacy, light industry.
Background technology
The heat-transfer pipe encrustation of shell-and-tube heat exchanger can cause heat transfer efficiency decline, fluid flow resistance to increase, thereby enterprise energy expense and production cost have been increased, even more serious is that fouling also can cause underdeposit corrosion, cause potential safety hazard, shorten the service life of heat-transfer equipment, will influence normally carrying out of production and stop production to clean.
In the cleaning and heat-transfer enhancing method, the rotator type cleaning and heat-transfer enhancing device has significant on-line cleaning and augmentation of heat transfer effect in existing pipe." rotator type cleaning and heat-transfer enhancing device " (publication number CN 2833494) is made up of rotor, fixed mount, steel wire and stay pipe, fixed mount is installed in the heat-transfer pipe two ends, steel wire is by the fixed mount axis hole, rotor is arranged along the heat-transfer pipe axis, rotor rotates under fluid impact, thereby reaches the purpose of augmentation of heat transfer and on-line cleaning." rotating piece type automatic-cleaning and heat-transfer enhancing device " (patent No.: 200820079749.x) be made of rotor, suspension member, axis and spacing rivet, every heat-transfer pipe of heat exchanger needs two suspension members, is separately fixed at the two ends of heat-transfer pipe; Rotor is worn bunchiness by axis, and rotor is arranged in groups, and by spacing rivet space, the rotor moulding is simpler than rotor structure between every group, and material can adopt plastics or metal, can adopt compression moulding or injection moulding according to the difference of its material, and mould obtains simplifying.
The device that above-mentioned two kinds of patents are mentioned has augmentation of heat transfer effect and on-line auto-cleaning ability, has obtained commercial Application.But local rotor rotation is obstructed under the more situation of fluid media (medium) impurity, and then makes that other rotor rotations in the group are not smooth, and all rotors when serious in the whole heat-transfer pipe can't rotate, and have lost due effect.
Summary of the invention
The present invention is intended to effectively solve in the existing heat-transfer pipe problems such as tumbler is subjected to that the impurity effect rotation is obstructed in the augmentation of heat transfer and online automatically cleaning technology, so that strengthen its augmentation of heat transfer and automatically cleaning effect.
The technical scheme that the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating of the present invention adopts is as follows: it comprises left fixed mount, tumbler, back shaft, movable locating part, fixing locating part, right fixed mount and elastic parts, medium is installed fixedly frame end inflow of a left side from heat-transfer pipe, left side fixed mount, right fixed mount connects with the heat-transfer pipe socket joint, left side fixed mount, right fixed mount can move in heat-transfer pipe vertically, back shaft can penetrate left fixed mount, movable locating part, fixing locating part, tumbler, right fixed mount, tumbler on back shaft can be arranged one by one, also can be by putting into the movable locating part between tumbler, fixedly locating part is arranged the tumbler grouping, fixedly locating part is fixedlyed connected with back shaft, the displacement that is arranged in the right fixed mount of heat-transfer pipe outlet is less than the position length distance of right fixed mount at heat-transfer pipe, to guarantee the operate as normal of tumbler in heat-transfer pipe, the back shaft in the heat-transfer pipe is two joints, three joint or more pieces.Be connected with elastic parts between back shaft, elastic parts can be that diameter and heat-transfer pipe internal diameter are the big spring of matched in clearance, also can be diameter little spring close with the tumbler axle diameter or elasticity flexible axle.Elastic parts makes the rotor can axially reciprocating in heat-transfer pipe, under the condition that the media flow active force changes, the elastic parts axial stretching, and then the tumbler on the drive back shaft not only rotates but also can axially move back and forth in heat-transfer pipe, reciprocating amplitude of tumbler and velocity of rotation realize by regulating pressure medium and flow, can regularly or irregularly carry out, also can select jerk pump for use, the axial disturbance cycle is carried out.
Elastic parts among the present invention can be positioned near left fixed mount, right fixed mount place, also can be positioned at other position of heat-transfer pipe, determine according to cleaning and strengthening effect, if heat-transfer pipe bends, utilize the flexibility of elastic parts, can place it in the turning, guarantee that the tumbler on the back shaft rotates freely.
Elastic parts among the present invention can comprise spring and end coupling thereof, and spring plays provides elasticity and location double action; Can be the sub-assembly of keeper, spring and end coupling thereof also, keeper plays the role of positioning, and spring only provides elastic reaction, and end coupling one end is fixed on the spring, and the end coupling other end is connected with back shaft.
Elastic parts above-mentioned can be made or be made by plastics, rubber by metal material.
If spring also plays positioning action among the present invention, the wearing and tearing that when axially moving heat-transfer pipe caused for reducing metal spring, coat or the coating flexible material around the spring wire at the maximum gauge place outside at spring holder, for example thermoplastic elastomer (TPE) such as polytetrafluoroethylene (PTFE), nylon, polyurethane or abrasive rubber etc.
Keeper is disk or a part with holes, and under the situation that satisfies location and requirement of strength, keeper should be tried one's best greatly the medium flow area, and endoporus is located with back shaft, and cylindrical is located with the heat-transfer pipe internal diameter.
For reducing the wearing and tearing of keeper cylindrical and heat-transfer pipe internal diameter, the keeper cylindrical coats or the coating flexible material, and flexible material is thermoplastic elastomer (TPE) or abrasive rubbers such as polytetrafluoroethylene (PTFE), nylon, polyurethane.
Tumbler among the present invention can be rotor or rotor, rib portion fluting at tumbler, the form of groove can be straight trough, skewed slot, dovetail groove, can reduce the probability that blocks impurity between rib portion and the heat-transfer pipe inwall at the differential trench open of certain rib portion, rib portion is easy to be subjected to washing away of medium, these grooves can also increase the flow-disturbing of heat-transfer pipe inwall boundary simultaneously, especially when tumbler axially moves, increase the effect that hangs to tube wall, cleaning and heat-transfer effect are more remarkable.
Among the present invention, tumbler can divide into groups by elastic parts, on a back shaft tumbler also can by movable locating part with or fixedly locating part be divided into different groups.
The present invention is applicable to the shell-and-tube heat transmission equipment, comprise that heat-transfer pipe inwalls such as horizontal heat exchanger and vertical heat exchanger, condenser, evaporimeter, carbonators are easy to the occasion of fouling, make tumbler in heat-transfer pipe, do axially reciprocating by increasing elastic parts, increase the flow-disturbing degree of medium in the heat-transfer pipe greatly, had the elasticity and the positioning action of elastic component to make tumbler in the heat-transfer pipe of bending, also can use, and the effect of hanging of the straight trough of tumbler rib portion or skewed slot make descale effect and heat-transfer effect more remarkable.
Description of drawings
Fig. 1 is the rotor self-cleaning enhanced heat transfer device by turbulent flow schematic diagram of a kind of axially reciprocating of the present invention.
Fig. 2 is that the elastic parts of the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating of the present invention is connected enlarged drawing with back shaft.
Fig. 3 is that the elastic parts of the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating of the present invention includes the structural representation that keeper, spring and end coupling thereof are connected with back shaft.
Fig. 4 is the axis projection figure of keeper among Fig. 3.
Fig. 5 is that the tumbler of the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating of the present invention is opened the straight trough structural representation.
Fig. 6 is the tumbler of the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating of the present invention structural representation that oblique notches.
Among the figure: the 1-back shaft, 2-left side fixed mount, the movable locating part of 3-, the 4-tumbler, the 5-elastic parts, the 6-heat-transfer pipe, 7-is locating part fixedly, the right fixed mount of 8-, 9-end coupling, 10-spring, 11-keeper.
The specific embodiment
The embodiment of the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating of the present invention: this device comprises left fixed mount 2, tumbler 4, back shaft 1, movable locating part 3, fixedly locating part 7, right fixed mount 8 and elastic parts 5, as shown in Figure 1, left side fixed mount 2, right fixed mount 8 connects with heat-transfer pipe 6 socket joints, left side fixed mount 2, right fixed mount 8 can move in heat-transfer pipe 6 vertically, back shaft 1 can penetrate left fixed mount 2, movable locating part 3, fixedly locating part 7, tumbler 4, right fixed mount 8, tumbler 4 on back shaft 1 can be one by one, also can be by putting into the movable locating part 3 of 4 of tumblers, fixedly locating part 7 is with tumbler 4 groupings, fixedly locating part 7 is fixedlyed connected with back shaft 1, the displacement that is arranged in the right fixed mount 8 of heat-transfer pipe 6 outlets is less than the orientation distance of right fixed mount 8 at heat-transfer pipe 6, to guarantee the operate as normal of tumbler 4 in heat-transfer pipe 6, back shaft 1 in the heat-transfer pipe 6 is two joints, three joint or more pieces, between back shaft 1, be connected with elastic parts 5, elastic parts 5 also has positioning action, by the back shaft near medium inlet end left side fixed mount in the different heat transfer pipe is coupled together, make back shaft 1, fixedly locating part 7 and elastic parts 5 do not rotate, under the effect of medium fluid, elastic parts 5 is flexible, and then drive tumbler 4 i.e. rotation in heat-transfer pipe 6 on the back shaft 1 and do axially again and move back and forth, increase the disturbance of heat-transfer pipe 6 inner fluids, make impurity be difficult for deposition stop on each part, the degree of this disturbance is finished by regulating rate-of flow, can regularly or irregularly carry out, also can select jerk pump for use, the disturbance cycle is carried out.
Elastic parts 5 among the present invention can be positioned near left fixed mount 2, right fixed mount 8 places, also can be positioned at other position of heat-transfer pipe 6, as shown in Figure 1, if heat-transfer pipe 6 bends, can place it in the turning, rotate freely to guarantee the tumbler 4 on the back shaft 1.
Elastic parts 5 among the present invention can comprise spring 10 and end coupling 9 thereof, and spring 10 plays provides elasticity and location double action, sees shown in Figure 2; Also can be the sub-assembly that comprises keeper 11, spring 10 and end coupling 9 thereof, as shown in Figure 3, keeper 11 plays the role of positioning, and 10 on spring provides elastic reaction, and end coupling 9 couples together spring 10 and back shaft 1.
The spring of using among the present invention 10 can be to be made or made by plastics, rubber by metal material.
If spring 10 also plays positioning action among the present invention, the excessive wear that when axially moving heat-transfer pipe 6 is caused for reducing metal spring, outer coating of spring wire or coating flexible material at spring 10 coiling maximum gauge places, for example thermoplastic elastomer (TPE) such as polytetrafluoroethylene (PTFE), nylon, polyurethane or abrasive rubber etc.
For reducing the wearing and tearing of keeper 11 cylindricals and heat-transfer pipe 6 internal diameters, keeper 11 cylindricals coat or the coating flexible material, and flexible material is thermoplastic elastomer (TPE) or abrasive rubbers such as polytetrafluoroethylene (PTFE), nylon, polyurethane.
Tumbler 4 among the present invention can be rotor or rotor, its rib portion fluting, the form of groove can be straight trough, skewed slot, dovetail groove, also can be at the differential trench open of rib portion, the rotor of many ribs or rotor, can or all slot at the local of certain rib or some rib, as shown in Figure 5 and Figure 6, make rib portion be easy to be subjected to washing away of medium, these grooves can also increase the flow-disturbing of heat-transfer pipe inwall boundary simultaneously, especially when tumbler axially moves, increase the effect that hangs to tube wall, cleaning and heat-transfer effect are more remarkable.
Among the present invention, tumbler 4 can divide into groups by elastic parts 5, on a back shaft 1 tumbler 4 also can by movable locating part 3 with or fixedly locating part 7 be divided into different groups.
Specific embodiments of the invention are: heat-transfer pipe 6 internal diameters are Φ 23mm, length 8000mm; Tumbler 4 is for having the rotating piece type automatic structure of two ribs, axial length 30mm, diameter of bore Φ 2mm; Elastic parts 5 is the turriform spring 10 of two ends band taper, and spring wire diameter of phi 2mm places two elastic parts 5 in the heat-transfer pipe 6; The back shaft diameter is Φ 1.8mm; The water yield is pulsed in 10%; Medium is the water that contains silt.Tumbler 4 rotates freely in this device, and after operation a period of time, the tube wall of heat-transfer pipe 6 does not have fouling.
Claims (8)
1. the rotor self-cleaning enhanced heat transfer device by turbulent flow of an axially reciprocating, it is characterized in that: comprise left fixed mount, tumbler, back shaft, movable locating part, fixing locating part, right fixed mount and elastic parts, medium is installed fixedly frame end inflow of a left side from heat-transfer pipe, left side fixed mount, right fixed mount connects with the heat-transfer pipe socket joint, left side fixed mount, right fixed mount can move in heat-transfer pipe vertically, back shaft penetrates left fixed mount, movable locating part, fixing locating part, tumbler, right fixed mount, fixedly locating part is fixedlyed connected with back shaft, the displacement that is arranged in the right fixed mount of heat-transfer pipe outlet is less than the position length distance of right fixed mount at heat-transfer pipe, back shaft in the heat-transfer pipe is two joints, three joint or more pieces, between each back shaft, be connected with elastic parts, elastic parts can be that diameter and heat-transfer pipe internal diameter are the big spring of matched in clearance, also can be diameter little spring close or elasticity flexible axle with the tumbler axle diameter, elastic parts makes the rotor can axially reciprocating in heat-transfer pipe, under the condition that the media flow active force changes, the elastic parts axial stretching, and then the tumbler on the drive back shaft not only rotates but also can axially move back and forth in heat-transfer pipe, and reciprocating amplitude of tumbler and velocity of rotation realize by regulating pressure medium and flow.
2. the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating according to claim 1, it is characterized in that: the tumbler on back shaft can be arranged one by one, also can by put into movable locating part between tumbler, fixedly locating part becomes certain intervals to arrange tumbler, the spacing size is identical with the amplitude of axially reciprocating.
3. the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating according to claim 1, it is characterized in that: elastic parts can be positioned near left fixed mount, right fixed mount place, also can be positioned at other position of heat-transfer pipe, if heat-transfer pipe bends, elastic parts can be placed on the turning.
4. the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating according to claim 1, it is characterized in that: elastic parts comprises spring and end coupling thereof, it also can be the sub-assembly that comprises keeper, spring and end coupling thereof, end coupling one end is fixed on the spring, and the end coupling other end is connected with back shaft.
5. the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating according to claim 4, it is characterized in that: spring can be made or be made by plastics, rubber by metal material.
6. the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating according to claim 4 is characterized in that: spring holder coats or applies thermoplastic elastomer (TPE) or abrasive rubbers such as polytetrafluoroethylene (PTFE), nylon, polyurethane around the spring wire outside at maximum gauge place.
7. the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating according to claim 4, it is characterized in that: keeper is disk or a part with holes, endoporus is located with back shaft, cylindrical is with heat-transfer pipe internal diameter location, and the keeper cylindrical coats or apply thermoplastic elastomer (TPE) or abrasive rubbers such as polytetrafluoroethylene (PTFE), nylon, polyurethane.
8. the rotor self-cleaning enhanced heat transfer device by turbulent flow of a kind of axially reciprocating according to claim 1 is characterized in that: at the rib portion fluting of tumbler, the form of groove can be straight trough, skewed slot, dovetail groove, can be at the differential trench open of certain rib portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100773795A CN101813438B (en) | 2009-02-20 | 2009-02-20 | Self-cleaning enhanced heat transfer device by turbulent flow of axially reciprocating rotors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100773795A CN101813438B (en) | 2009-02-20 | 2009-02-20 | Self-cleaning enhanced heat transfer device by turbulent flow of axially reciprocating rotors |
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| Publication Number | Publication Date |
|---|---|
| CN101813438A true CN101813438A (en) | 2010-08-25 |
| CN101813438B CN101813438B (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100773795A Expired - Fee Related CN101813438B (en) | 2009-02-20 | 2009-02-20 | Self-cleaning enhanced heat transfer device by turbulent flow of axially reciprocating rotors |
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| CN (1) | CN101813438B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121807A (en) * | 2011-02-16 | 2011-07-13 | 江村 | Double-diameter spring type heat transfer pipe insert orifice fixing device |
| WO2012037745A1 (en) * | 2010-09-20 | 2012-03-29 | 北京华夏壹泰科技有限公司 | Self-cleaning enhanced heat transfer device used for heat exchange pipe and manufacturing method thereof |
| CN103411468A (en) * | 2013-08-05 | 2013-11-27 | 北京化工大学 | Center spring and helical blade rotor in heat exchange tube |
| CN103706135A (en) * | 2012-10-08 | 2014-04-09 | 俞天翔 | In-pipe vibration reciprocating spiral reciprocatingly cleaning type falling film evaporator |
| CN103808197A (en) * | 2014-01-24 | 2014-05-21 | 潍柴动力股份有限公司 | Tubular heat exchanger and turbulence device thereof |
| CN106839865A (en) * | 2015-12-03 | 2017-06-13 | 华电电力科学研究院 | Intelligent Condenser Titanium Tube on-line cleaning device system |
| CN110345798A (en) * | 2019-07-02 | 2019-10-18 | 宁波方太厨具有限公司 | Heat exchanger tube, heat exchanger and gas heater |
| CN112284184A (en) * | 2020-10-31 | 2021-01-29 | 湖南达道新能源开发有限公司 | Cleaning and scraping device and method for inner wall of geothermal pipe |
-
2009
- 2009-02-20 CN CN2009100773795A patent/CN101813438B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012037745A1 (en) * | 2010-09-20 | 2012-03-29 | 北京华夏壹泰科技有限公司 | Self-cleaning enhanced heat transfer device used for heat exchange pipe and manufacturing method thereof |
| CN102121807A (en) * | 2011-02-16 | 2011-07-13 | 江村 | Double-diameter spring type heat transfer pipe insert orifice fixing device |
| CN103706135A (en) * | 2012-10-08 | 2014-04-09 | 俞天翔 | In-pipe vibration reciprocating spiral reciprocatingly cleaning type falling film evaporator |
| CN103411468A (en) * | 2013-08-05 | 2013-11-27 | 北京化工大学 | Center spring and helical blade rotor in heat exchange tube |
| CN103808197A (en) * | 2014-01-24 | 2014-05-21 | 潍柴动力股份有限公司 | Tubular heat exchanger and turbulence device thereof |
| CN106839865A (en) * | 2015-12-03 | 2017-06-13 | 华电电力科学研究院 | Intelligent Condenser Titanium Tube on-line cleaning device system |
| CN106839865B (en) * | 2015-12-03 | 2019-11-26 | 华电电力科学研究院 | Intelligent Condenser Titanium Tube on-line cleaning device system |
| CN110345798A (en) * | 2019-07-02 | 2019-10-18 | 宁波方太厨具有限公司 | Heat exchanger tube, heat exchanger and gas heater |
| CN112284184A (en) * | 2020-10-31 | 2021-01-29 | 湖南达道新能源开发有限公司 | Cleaning and scraping device and method for inner wall of geothermal pipe |
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| Publication number | Publication date |
|---|---|
| CN101813438B (en) | 2012-02-15 |
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