CN103673746B - Inner turbulent flow dirt cleaning rotor of heat exchanging pipe - Google Patents
Inner turbulent flow dirt cleaning rotor of heat exchanging pipe Download PDFInfo
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- CN103673746B CN103673746B CN201310714852.2A CN201310714852A CN103673746B CN 103673746 B CN103673746 B CN 103673746B CN 201310714852 A CN201310714852 A CN 201310714852A CN 103673746 B CN103673746 B CN 103673746B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 35
- 238000003466 welding Methods 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 20
- 239000007788 liquid Substances 0.000 abstract description 18
- 230000002708 enhancing effect Effects 0.000 abstract description 7
- 230000001965 increasing effect Effects 0.000 abstract description 7
- 238000005520 cutting process Methods 0.000 abstract description 4
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种能清垢防垢以及强化传热的换热管内扰流清垢转子，主要包含内叶片、外叶片以及中心轴，外叶片与内叶片相连，其特征在于：内叶片与中心轴相连，内叶片为螺旋形，内叶片上开有通孔；外叶片为直板形，外叶片的外部有一圆柱滚子，圆柱滚子外表面与换热管的内壁接触，圆柱滚子的中心轴固定于外叶片上，圆柱滚子绕圆柱滚子的中心轴转动；内叶片与外叶片间有一个缝隙。本发明的转子转动时，圆柱滚子沿管内壁转动，圆柱滚子上的条状凸起对管壁的污垢有挤压切割作用，促使污垢剥离换热管壁，起到清垢的作用，并且对于洁净的换热管，转子转动时可以延缓污垢的起始阶段，内叶片对液体有扰流作用，增加管内液体湍流程度，起到强化传热的效果。
The invention discloses a turbulent flow cleaning rotor in a heat exchange tube capable of cleaning and preventing scale and enhancing heat transfer, which mainly includes inner blades, outer blades and a central shaft, the outer blades are connected with the inner blades, and are characterized in that: the inner blades are connected with the inner blades The central axis is connected, the inner blade is spiral, and there are through holes on the inner blade; the outer blade is straight, and there is a cylindrical roller outside the outer blade. The outer surface of the cylindrical roller is in contact with the inner wall of the heat exchange tube. The central shaft is fixed on the outer blade, and the cylindrical roller rotates around the central shaft of the cylindrical roller; there is a gap between the inner blade and the outer blade. When the rotor of the present invention rotates, the cylindrical roller rotates along the inner wall of the tube, and the strip-shaped protrusions on the cylindrical roller have the effect of squeezing and cutting the dirt on the tube wall, which promotes the dirt to peel off the heat exchange tube wall, and plays the role of cleaning. And for clean heat exchange tubes, the initial stage of fouling can be delayed when the rotor rotates, and the inner blades have a turbulent effect on the liquid, increasing the turbulence of the liquid in the tube and enhancing the heat transfer effect.
Description
技术领域technical field
本发明涉及一种管壳式换热器设备中换热管内的强化传热以及防垢清垢的内插元件，尤其涉及一种以换热管内液体提供动力的，起到强化传热以及防垢清垢作用的换热管内扰流清垢转子。The invention relates to an interpolation element for enhancing heat transfer and anti-scaling and cleaning in the heat exchange tube of a shell-and-tube heat exchanger, in particular to an insert element powered by liquid in the heat exchange tube to enhance heat transfer and prevent fouling. Scale-cleaning rotor with disturbed flow in the heat exchange tube.
技术背景technical background
近几年来节能减排技术成为各国争相研究的重要关键技术。管壳式换热器作为石油、化工、火电、核电、冶金、轻工、航空器件和船舶车辆等众多领域中应用最为广泛的热交换设备，其换热效率的高低直接影响到整个国家甚至世界节能减排的效果，但是管壳式换热器的换热管中，普遍存在结垢问题，污垢不但能够增加热阻，降低传热效率，还会增加管道的流动阻力，有时甚至会出现堵管等现象，严重的影响了设备效率，产生重大能源浪费。污垢一般都会伴随着腐蚀，垢下腐蚀严重时会出现管壁泄露，对设备的安全造成很大的威胁。现在对污垢的处理方法是进行停机清洗，采用高压水枪清洗或者酸洗等清洗方式，不但照成人力物力的浪费，清洗的废水还会造成环境的污染，并且停机清洗还影响了工厂的连续生产，降低了生产效率。人们一直试图的发明一种在线清洗技术，其中之一就是利用流体推动螺旋纽带旋转来实现在线自动除垢的方法，中国专利申请号为：CN1424554，专利名称为“双扰流螺旋式强化换热及自动除垢装置”，但是由于螺旋纽带为一条整带，换热管在经过加工安装后不够顺直，螺旋纽带与换热管内壁之间会产生不均匀的缝隙，这样纽带的除垢作用小而不均匀，除垢效果不理想。之后中国专利号为ZL200520127121.9，公开了发明名称为“转子式自清洁强化传热装置”的专利申请，此装置是由固定架、转子、柔性轴和支撑管构成，两固定架分别固定在换热管的两端；转子的外表面有螺旋棱，转子上有中心孔；支撑架设在转子与固定架之间，柔性轴穿过转子的中心孔和支撑管固定在两固定架上。但是专利的转子采用扰流冲击管壁的方式进行防垢，只是达到了延缓结垢的效果，不能清垢。In recent years, energy saving and emission reduction technology has become an important key technology that countries are competing to study. Shell-and-tube heat exchangers are the most widely used heat exchange equipment in many fields such as petroleum, chemical industry, thermal power, nuclear power, metallurgy, light industry, aviation devices, and ship vehicles. The heat exchange efficiency directly affects the whole country and even the world. The effect of energy saving and emission reduction, but in the heat exchange tubes of shell and tube heat exchangers, fouling is common. Fouling can not only increase the thermal resistance and reduce the heat transfer efficiency, but also increase the flow resistance of the pipeline, and sometimes even blockage Tubes and other phenomena seriously affect the efficiency of equipment, resulting in significant energy waste. Dirt is generally accompanied by corrosion. When the corrosion under the scale is serious, the pipe wall will leak, which poses a great threat to the safety of the equipment. The current treatment method for dirt is to stop cleaning, and use high-pressure water gun cleaning or pickling cleaning methods, which not only waste manpower and material resources, but also cause environmental pollution due to cleaning wastewater, and stop cleaning also affects the continuous production of the factory. , reducing production efficiency. People have been trying to invent an on-line cleaning technology, one of which is to use the fluid to drive the rotation of the spiral bond to realize the method of online automatic descaling. And automatic descaling device", but because the spiral bond is a whole belt, the heat exchange tube is not straight enough after processing and installation, and there will be uneven gaps between the spiral bond and the inner wall of the heat exchange tube, so the descaling effect of the bond Small and uneven, the descaling effect is not ideal. Afterwards, the Chinese patent number is ZL200520127121.9, which discloses a patent application titled "rotor type self-cleaning enhanced heat transfer device". This device is composed of a fixed frame, a rotor, a flexible shaft and a support tube. The two ends of the heat exchange tube; the outer surface of the rotor has helical ribs, and the rotor has a central hole; the supporting frame is arranged between the rotor and the fixed frame, and the flexible shaft passes through the central hole of the rotor and the supporting tube and is fixed on the two fixed frames. However, the patented rotor adopts the method of turbulent flow impacting the pipe wall for anti-scaling, which only achieves the effect of delaying the scaling, but cannot remove the scaling.
发明内容Contents of the invention
为解决现有的技术只能防垢不能清垢除垢的缺点，本发明的目的是设计一种能清垢防垢以及强化传热的新型的转子，该转子包含内叶片、外叶片以及中心轴，外叶片的外部有一圆柱滚子，滚子上有条状凸起，当转子受到液体的驱动转动时，转子外叶片上的圆柱滚子与管壁接触并在管壁上滚动，凸起挤压切割污垢，使其脱落，起到清垢防垢的目的。In order to solve the shortcomings of the existing technology that can only prevent scale and cannot remove scale, the purpose of this invention is to design a new type of rotor that can remove scale and prevent scale and enhance heat transfer. The rotor includes inner blades, outer blades and a center There is a cylindrical roller on the outside of the outer blade of the shaft, and there is a strip-shaped protrusion on the roller. When the rotor is driven by the liquid to rotate, the cylindrical roller on the outer blade of the rotor contacts and rolls on the pipe wall, and the protrusion Squeeze and cut the dirt to make it fall off, and play the purpose of cleaning and preventing dirt.
为解决上述问题采用的技术方案是：换热管内扰流清垢转子，主要包含内叶片、外叶片以及中心轴，中心轴为一圆管，外叶片与内叶片相连，内叶片与中心轴相连，外叶片不直接与中心轴相连。内叶片为螺旋形，液体流经内叶片时对叶片提供一个驱动力，使转子转动，转子内叶片对液体产生扰流作用，增加液体的湍流程度，起到强化传热的效果；内叶片上开有几何形的通孔，用以降低转子的阻力。外叶片为直板形，外叶片的外部有一圆柱滚子，圆柱滚子外表面与换热管的内壁接触，圆柱滚子的中心轴固定于外叶片上，圆柱滚子绕滚子中心轴转动。滚子上有条状凸起，使圆柱滚子的平滑表面变为带有山峰状起伏表面，柱状滚子上条状凸起与换热管内壁接触时，使圆柱滚子与换热管内壁的接触面积减小，在相同的推力的作用下，增加了圆柱滚子在接触点对污垢的压力，条状凸起能压入污垢层内，对污垢有挤压切割的作用，当转子转动条状凸起与管壁脱离时，条状凸起对换热管内壁的污垢起到一个剥离的作用，使污垢脱落。内叶片产生的旋转流把脱落的污垢从管壁带离，起到清除换热管管壁污垢的效果。圆柱滚子沿管内壁转动，使洁净换热管内的污垢在污垢起始阶段就被阻断，起到了防垢的效果。转子转动时，外叶片对液体有扰流作用，增加了液体的湍流程度，起到强化传热的效果。内叶片与外叶片间有一个缝隙，转子转动时，叶片挤压液体，使其流过缝隙，形成径向流，起到强化传热的作用，径向流能冲击滚子剥落的污垢，将其带离管壁。The technical solution adopted to solve the above problems is: the turbulence cleaning rotor in the heat exchange tube mainly includes inner blades, outer blades and a central shaft, the central shaft is a circular tube, the outer blades are connected to the inner blades, and the inner blades are connected to the central shaft , the outer blades are not directly connected to the central shaft. The inner blades are helical. When the liquid flows through the inner blades, it provides a driving force to the blades to make the rotor rotate. The inner blades of the rotor have a disturbing effect on the liquid, increasing the turbulence of the liquid and enhancing the heat transfer. There are geometric through holes to reduce the resistance of the rotor. The outer blade is straight, and there is a cylindrical roller on the outside of the outer blade. The outer surface of the cylindrical roller is in contact with the inner wall of the heat exchange tube. The central axis of the cylindrical roller is fixed on the outer blade, and the cylindrical roller rotates around the central axis of the roller. There are strip-shaped protrusions on the rollers, so that the smooth surface of the cylindrical roller becomes a mountain-shaped undulating surface. When the strip-shaped protrusions on the cylindrical roller contact the inner wall of the heat exchange tube, the cylindrical roller and the inner wall of the heat exchange tube The contact area is reduced. Under the same thrust, the pressure of the cylindrical roller on the dirt at the contact point is increased, and the strip-shaped protrusions can be pressed into the dirt layer, which has the effect of squeezing and cutting the dirt. When the rotor rotates When the strip-shaped protrusion is separated from the tube wall, the strip-shaped protrusion plays a role in peeling off the dirt on the inner wall of the heat exchange tube to make the dirt fall off. The swirling flow generated by the inner blades takes the fallen dirt away from the tube wall, which has the effect of removing the dirt on the tube wall of the heat exchange tube. The cylindrical roller rotates along the inner wall of the tube, so that the dirt in the clean heat exchange tube is blocked at the initial stage of fouling, which has the effect of anti-scaling. When the rotor rotates, the outer blades have a disturbing effect on the liquid, which increases the degree of turbulence of the liquid and enhances heat transfer. There is a gap between the inner blade and the outer blade. When the rotor rotates, the blade squeezes the liquid to make it flow through the gap, forming a radial flow to enhance heat transfer. The radial flow can impact the dirt peeled off by the roller, and the It is carried away from the tube wall.
本发明换热管内扰流清垢转子，内叶片的个数为一个、两个或多个，内叶片上通孔的截面形状为圆形，正方形，平行四边形等几何形状。In the present invention, the rotor for disturbing the internal flow of the heat exchange tube and cleaning the scale has one, two or more inner blades, and the cross-sectional shape of the through holes on the inner blades is a geometric shape such as a circle, a square, and a parallelogram.
本发明换热管内扰流清垢转子，外叶片个数为一个、两个或多个，其与内叶片的个数相同或者不同。According to the present invention, the internal turbulence and scale cleaning rotor of the heat exchange tube has one, two or more outer blades, which are the same as or different from the number of inner blades.
本发明换热管内扰流清垢转子，一个外叶片上的圆柱滚子为一个、两个或多个，圆柱滚子上的条状凸起截面为梯形、三角形、矩形等几何形状，条状突起的个数为一个、两个或者多个。In the present invention, there are one, two or more cylindrical rollers on one outer blade of the heat exchange tube internal turbulence cleaning rotor. The number of protrusions is one, two or more.
本发明换热管内扰流清垢转子，内叶片与外叶片为焊接、铆接或一体成型等连接方式，内叶片与中心轴的为焊接、铆接或一体成型等连接方式。In the heat exchange tube internal disturbance cleaning rotor of the present invention, the inner blades and outer blades are connected by welding, riveting or integral molding, and the inner blades and the central shaft are connected by welding, riveting or integral molding.
本发明换热管内扰流清垢转子，转子由高分子材料、高分子基复合材料、金属或者陶瓷材料制作。In the present invention, the rotor for disturbing flow and cleaning dirt in the heat exchange tube is made of polymer material, polymer-based composite material, metal or ceramic material.
本发明的有益效果是：1、转子转动时，圆柱滚子沿管内壁转动，圆柱滚子上的条状凸起对管壁的污垢有挤压切割作用，促使污垢剥离换热管壁，起到清垢的作用，特别适用于污垢沉积比较严重的管子。2、对于洁净的换热管，转子转动时可以延缓或阻断污垢的起始阶段，起到防垢阻垢的作用。3、内叶片对液体有扰流作用，增加管内液体的湍流程度，起到强化传热的效果。The beneficial effects of the present invention are as follows: 1. When the rotor rotates, the cylindrical roller rotates along the inner wall of the tube, and the strip-shaped protrusions on the cylindrical roller have the effect of squeezing and cutting the dirt on the tube wall, which promotes the dirt to peel off the heat exchange tube wall, and plays a role It is especially suitable for pipes with serious dirt deposits. 2. For clean heat exchange tubes, when the rotor rotates, it can delay or block the initial stage of fouling, and play the role of anti-scaling and anti-scaling. 3. The inner vanes have a turbulent effect on the liquid, increasing the turbulence of the liquid in the tube and enhancing the heat transfer.
附图说明Description of drawings
图1是本发明换热管内扰流清垢转子的三维结构示意图。Fig. 1 is a schematic diagram of a three-dimensional structure of a turbulence cleaning rotor in a heat exchange tube of the present invention.
图2是本发明换热管内扰流清垢转子的滚子的局部视图。Fig. 2 is a partial view of the rollers of the turbulence cleaning rotor in the heat exchange tube of the present invention.
图3是本发明换热管内扰流清垢转子的一个具体实施例。Fig. 3 is a specific embodiment of the turbulence cleaning rotor in the heat exchange tube of the present invention.
图中，1—内叶片，2—滚子中心轴，3—条状凸起，4—外叶片，5—圆柱滚子，6—中心轴，7—通孔，8—支撑架，9—换热管内扰流清垢转子，10—支撑轴，11—限位件，12—换热管。In the figure, 1—inner blade, 2—roller central axis, 3—strip protrusion, 4—outer blade, 5—cylindrical roller, 6—central shaft, 7—through hole, 8—support frame, 9— Disturbance cleaning rotor in heat exchange tube, 10—support shaft, 11—limiting piece, 12—heat exchange tube.
具体实施方式Detailed ways
如图1到2所示，本发明换热管内扰流清垢转子9包含内叶片1、外叶片4以及中心轴6，外叶片4与内叶片1相连，内叶片1与中心轴6相连，内叶片1为螺旋形；内叶片1上开有几何形的通孔7。外叶片4为直板形，外叶片4的外部有一圆柱滚子5，滚子中心轴2固定于外叶片4上，圆柱滚子5绕滚子中心轴2转动，圆柱滚子4上有条状凸起3。As shown in Figures 1 to 2, the turbulent flow cleaning rotor 9 in the heat exchange tube of the present invention includes inner blades 1, outer blades 4 and a central shaft 6, the outer blades 4 are connected to the inner blades 1, and the inner blades 1 are connected to the central shaft 6. The inner blade 1 is spiral; the inner blade 1 is provided with a geometric through hole 7 . The outer blade 4 is in the shape of a straight plate. There is a cylindrical roller 5 outside the outer blade 4. The central axis 2 of the roller is fixed on the outer blade 4. The cylindrical roller 5 rotates around the central axis 2 of the roller. There are strips on the cylindrical roller 4. Raised 3.
图3为本发明的一个具体实施例，清垢防垢强化传热装置包括换热管内扰流清垢转子9、限位件11、换热管12、支撑架8和支撑轴10，数个转子通过支撑轴10串联在一起，限位件11将多个转子分为几组转子串，支撑架8固定在换热管12两端，支撑轴10的两端分别固定在支撑架8上。液体流经内叶片1时对内叶片1提供一个驱动力，使换热管内扰流清垢转子9转动，换热管内扰流清垢转子9内叶片1对液体产生扰流作用，增加液体的湍流程度，起到强化传热的效果；内叶片1上开有几何形的通孔7，用以降低转子的阻力。外叶片4为直板形，外叶片4的外部有一圆柱滚子5，圆柱滚子5外表面与换热管12的内壁接触，圆柱滚子5的中心轴6固定于外叶片4上，圆柱滚子5绕滚子中心轴6转动。圆柱滚子5上有条状凸起3，使圆柱滚子5的平滑表面变为带有山峰状起伏表面，圆柱滚子5上条状凸起3与换热管12内壁接触时，使圆柱滚子4与换热管12内壁的接触面积减小，在相同的推力的作用下，增加了圆柱滚子5在接触点对污垢的压力，条状凸起3能压入污垢层内，对污垢有挤压切割的作用，当转子转动条状凸起3与管壁脱离时，条状凸起3对换热管12内壁的污垢起到一个剥离的作用，使污垢脱落。内叶片1产生的旋转流把脱落的污垢从管壁带离，起到清除换热管12管壁污垢的效果。圆柱滚子5沿管内壁转动，使洁净换热管12内的污垢在污垢起始阶段就被阻断，起到了防垢的效果。转子转动时，外叶片4对液体有扰流作用，增加了液体的湍流程度，起到强化传热的效果。内叶片1与外叶片4间有一个缝隙，转子转动时，叶片挤压液体，使其流过缝隙，形成径向流，起到强化传热的作用，径向流能冲击滚子剥落的污垢，将其带离管壁。Fig. 3 is a specific embodiment of the present invention. The scale cleaning and anti-scaling enhanced heat transfer device includes a turbulent flow cleaning rotor 9 in the heat exchange tube, a stopper 11, a heat exchange tube 12, a support frame 8 and a support shaft 10, several The rotors are connected in series through the support shaft 10 , the position-limiting member 11 divides the plurality of rotors into several groups of rotor strings, the support frame 8 is fixed on both ends of the heat exchange tube 12 , and the two ends of the support shaft 10 are respectively fixed on the support frame 8 . When the liquid flows through the inner blade 1, it provides a driving force to the inner blade 1, so that the turbulence cleaning rotor 9 in the heat exchange tube rotates, and the inner blade 1 of the turbulence cleaning rotor 9 in the heat exchange tube has a turbulence effect on the liquid, increasing the flow of the liquid. The degree of turbulence has the effect of enhancing heat transfer; the inner blade 1 is provided with a geometric through hole 7 to reduce the resistance of the rotor. The outer blade 4 is straight, and there is a cylindrical roller 5 on the outside of the outer blade 4. The outer surface of the cylindrical roller 5 is in contact with the inner wall of the heat exchange tube 12. The central axis 6 of the cylindrical roller 5 is fixed on the outer blade 4. Sub 5 rotates around roller central axis 6. There are strip-shaped protrusions 3 on the cylindrical roller 5, so that the smooth surface of the cylindrical roller 5 becomes a mountain-like undulating surface. When the strip-shaped protrusions 3 on the cylindrical roller 5 contact the inner wall of the heat exchange tube 12, the cylindrical roller The contact area between the roller 4 and the inner wall of the heat exchange tube 12 is reduced. Under the same thrust, the pressure of the cylindrical roller 5 on the dirt at the contact point is increased, and the strip-shaped protrusion 3 can be pressed into the dirt layer. The dirt has the effect of extruding and cutting. When the rotor rotates, the strip-shaped protrusion 3 is separated from the tube wall, and the strip-shaped protrusion 3 plays a role of peeling off the dirt on the inner wall of the heat exchange tube 12 to make the dirt fall off. The swirling flow generated by the inner blades 1 takes the detached dirt away from the tube wall, and has the effect of removing the dirt on the tube wall of the heat exchange tube 12 . The cylindrical roller 5 rotates along the inner wall of the tube, so that the dirt in the clean heat exchange tube 12 is blocked at the initial stage of dirt, and the effect of anti-scaling is achieved. When the rotor rotates, the outer blades 4 have a disturbing effect on the liquid, increasing the degree of turbulence of the liquid and enhancing heat transfer. There is a gap between the inner blade 1 and the outer blade 4. When the rotor rotates, the blade squeezes the liquid to make it flow through the gap to form a radial flow to enhance heat transfer. The radial flow can impact the dirt peeled off by the roller , pulling it away from the pipe wall.
Claims (6)
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| CN107255424B (en) * | 2017-06-20 | 2019-01-22 | 东北大学 | A dust-laden hot exhaust heat recovery heat exchanger with self-cleaning function |
| CN109899823B (en) * | 2019-03-28 | 2020-09-08 | 苏州博墨热能产品有限公司 | Micro-eccentric swinging type flue gas turbulence device and method for enhancing flue gas heat exchange |
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| US812361A (en) * | 1903-10-08 | 1906-02-13 | Alfred Pickles | Tube, conduit, and pipe cleaner. |
| US4174750A (en) * | 1978-04-18 | 1979-11-20 | Nichols Billy M | Tube cleaner having anchored rotatable spiral member |
| CN1424554A (en) * | 2003-01-05 | 2003-06-18 | 浙江大学 | Dual turbulent spiral forced heat exchanging and automatic descaling device |
| CN2833494Y (en) * | 2005-10-10 | 2006-11-01 | 黄伟 | Rotor type self-cleaning enhanced heat transfer device |
| CN102645119A (en) * | 2012-05-10 | 2012-08-22 | 北京化工大学 | Composite rotor 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 |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US812361A (en) * | 1903-10-08 | 1906-02-13 | Alfred Pickles | Tube, conduit, and pipe cleaner. |
| US4174750A (en) * | 1978-04-18 | 1979-11-20 | Nichols Billy M | Tube cleaner having anchored rotatable spiral member |
| CN1424554A (en) * | 2003-01-05 | 2003-06-18 | 浙江大学 | Dual turbulent spiral forced heat exchanging and automatic descaling device |
| CN2833494Y (en) * | 2005-10-10 | 2006-11-01 | 黄伟 | Rotor type self-cleaning enhanced heat transfer device |
| CN102645119A (en) * | 2012-05-10 | 2012-08-22 | 北京化工大学 | Composite rotor 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 |
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