CN201555473U - Enamel oval steel tube air heat exchanger - Google Patents
Enamel oval steel tube air heat exchanger Download PDFInfo
- Publication number
- CN201555473U CN201555473U CN2009202403302U CN200920240330U CN201555473U CN 201555473 U CN201555473 U CN 201555473U CN 2009202403302 U CN2009202403302 U CN 2009202403302U CN 200920240330 U CN200920240330 U CN 200920240330U CN 201555473 U CN201555473 U CN 201555473U
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- tube
- heat exchanger
- enamel
- heat exchange
- steel pipe
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- Expired - Lifetime
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- 210000003298 dental enamel Anatomy 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 17
- 239000010959 steel Substances 0.000 title claims abstract description 17
- 239000003546 flue gas Substances 0.000 claims abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
本实用新型公开了一种搪瓷椭圆钢管式空气换热器，包括相对设置的两块管板，在两块管板之间设有若干根换热管，所述换热管包括钢管，在钢管的外表面上搪涂有搪瓷层，搪瓷层的设置解决了低温腐蚀的老大难问题，延长了换热器的使用寿命，若干根换热管在管板上均匀排布，所述换热管的截面为椭圆形，其长轴方向与烟气流向一致，换热管采取顺利布置，加上搪瓷表面光滑，这些因素都有利于减少烟气阻力，通常流速下搪涂有搪瓷层的换热管比圆管的流阻降低40％左右。
The utility model discloses an enamelled elliptical steel pipe type air heat exchanger, which comprises two tube plates arranged oppositely, and a plurality of heat exchange tubes are arranged between the two tube plates. The outer surface of the enamel is coated with an enamel layer. The setting of the enamel layer solves the long-standing problem of low-temperature corrosion and prolongs the service life of the heat exchanger. Several heat exchange tubes are evenly arranged on the tube sheet. The heat exchange tubes The cross-section is elliptical, and its long axis direction is consistent with the flue gas flow direction. The heat exchange tubes are arranged smoothly, and the enamel surface is smooth. The flow resistance of the tube is about 40% lower than that of the round tube.
Description
技术领域technical field
本实用新型涉及一种空气换热器，具体的说涉及一种耐腐蚀、换热效果好的搪瓷椭圆钢管式空气换热器，属于换热器技术领域。The utility model relates to an air heat exchanger, in particular to an enamelled elliptical steel pipe air heat exchanger with good corrosion resistance and good heat exchange effect, belonging to the technical field of heat exchangers.
背景技术Background technique
随着国民经济的持续快速发展，越来越多的工业锅炉和电站锅炉不断投产，伴随着巨大的能源消费，节能降耗便成了我们目前面临的紧迫任务。管式空气换热器是利用锅炉尾部烟气热量来加热燃烧所需空气的一种热交换装置，其作用是提高锅炉效率，提高燃烧空气温度，减少燃料不完全燃烧热损失。管式空气换热器具有热管式、光管式、翅片管式等多种结构形式，一般大都采用传统的圆形钢管，摆脱不了换热效果不太理想、不抗腐蚀、堵灰严重等问题。因此，研究开发一种新型的换热效果好、抗腐蚀、不易堵灰、烟气阻力小、使用寿命长的新型的换热器势在必行。With the sustained and rapid development of the national economy, more and more industrial boilers and power plant boilers have been continuously put into production. With the huge energy consumption, energy saving and consumption reduction have become an urgent task we are currently facing. The tubular air heat exchanger is a heat exchange device that uses the heat of the flue gas at the tail of the boiler to heat the air required for combustion. Its function is to improve the efficiency of the boiler, increase the temperature of the combustion air, and reduce the heat loss of incomplete combustion of the fuel. Tubular air heat exchangers have a variety of structural forms such as heat pipes, bare pipes, and finned tubes. Generally, traditional round steel pipes are used, which cannot get rid of the unsatisfactory heat transfer effect, non-corrosion resistance, and serious dust clogging. question. Therefore, it is imperative to research and develop a new type of heat exchanger with good heat transfer effect, corrosion resistance, not easy to block ash, small flue gas resistance, and long service life.
实用新型内容Utility model content
本实用新型要解决的问题是提供一种搪瓷椭圆钢管式空气换热器，能够有效解决圆管式空气换热器换热效果小、腐蚀严重、流通阻力大的缺陷。The problem to be solved by the utility model is to provide an enamel oval steel tube air heat exchanger, which can effectively solve the defects of the round tube air heat exchanger such as low heat exchange effect, serious corrosion and large circulation resistance.
为解决上述问题，本实用新型采用以下技术方案：In order to solve the above problems, the utility model adopts the following technical solutions:
一种搪瓷椭圆钢管式空气换热器，包括相对设置的两块管板，在两块管板之间设有若干根换热管，其特征在于：所述换热管包括钢管，在钢管的外表面上搪涂有搪瓷层。An enamelled elliptical steel tube type air heat exchanger, comprising two oppositely arranged tube plates, with several heat exchange tubes arranged between the two tube plates, characterized in that: the heat exchange tubes include steel tubes, The outer surface is enamelled with an enamel layer.
搪瓷层的设置解决了低温腐蚀的老大难问题，延长了换热器的使用寿命。The setting of the enamel layer solves the long-standing problem of low-temperature corrosion and prolongs the service life of the heat exchanger.
以下是本实用新型对上述方案的进一步改进：Below is the further improvement of the utility model to above-mentioned scheme:
若干根换热管在管板上均匀排布，所述换热管的截面为椭圆形，其长轴方向与烟气流向一致。Several heat exchange tubes are evenly arranged on the tube sheet. The cross section of the heat exchange tubes is elliptical, and the direction of its long axis is consistent with the flow direction of the flue gas.
换热管采取顺利布置，加上搪瓷表面光滑，这些因素都有利于减少烟气阻力，通常流速下搪涂有搪瓷层的换热管比圆管的流阻降低40％左右。The smooth layout of the heat exchange tubes and the smooth surface of the enamel are all conducive to reducing the resistance of the flue gas. Usually, the flow resistance of the heat exchange tubes coated with an enamel layer is about 40% lower than that of a round tube at a flow rate.
进一步改进：Further improvements:
所述换热管的长短轴之比为2∶1。The ratio of the long and short axes of the heat exchange tubes is 2:1.
使得该传热周长比相同截面的圆管长，管内的热阻小，有利管内介质的传热，椭圆管的传热面积比相同截面的圆管大12％，因此在相同流速下，管外换热面积可提高12％。The heat transfer circumference is longer than that of the circular tube with the same section, and the thermal resistance in the tube is small, which is beneficial to the heat transfer of the medium in the tube. The heat transfer area of the elliptical tube is 12% larger than that of the circular tube with the same section. The external heat exchange area can be increased by 12%.
本实用新型采用上述方案，将换热器采用卧式顺列布置，空气走管内，烟气自上而下冲刷管外，采取的最佳流速为烟气8-12m/s，空气6-10m/s。在空气换热器制作时，换热管的长轴方向与烟气的流向保持一致，管板和管端之间采用焊接密封，由于换热管呈流线型，在烟气横掠换热管时，流体分离点后移，减少了管后的漩涡区，从而比圆管减少积灰3-5倍，解决了管壁外积灰问题。The utility model adopts the above scheme, and the heat exchangers are arranged horizontally in series, the air goes inside the pipe, and the flue gas washes the outside of the pipe from top to bottom. /s. When the air heat exchanger is manufactured, the long axis direction of the heat exchange tube is consistent with the flow direction of the flue gas, and the tube plate and the tube end are welded and sealed. Since the heat exchange tube is streamlined, when the flue gas traverses the heat exchange tube , The fluid separation point is moved back, which reduces the vortex area behind the tube, thereby reducing the ash accumulation by 3-5 times compared with the round tube, and solving the problem of ash accumulation outside the tube wall.
下面结合附图和实施例对本实用新型作进一步说明：Below in conjunction with accompanying drawing and embodiment the utility model is further described:
附图说明Description of drawings
附图1为本实用新型实施例的结构示意图：Accompanying drawing 1 is the structural representation of the utility model embodiment:
附图2为附图1的右视图；Accompanying drawing 2 is the right view of accompanying drawing 1;
附图3为本实用新型实施例中换热管的截面示意图。Accompanying drawing 3 is the schematic cross-sectional view of the heat exchange tube in the embodiment of the utility model.
图中：1-管板；2-换热管；3-钢管；4-搪瓷层；5-烟气方向。In the figure: 1-tube sheet; 2-heat exchange tube; 3-steel pipe; 4-enamel layer; 5-flue gas direction.
具体实施方式Detailed ways
实施例，如图1所示，一种搪瓷椭圆钢管式空气换热器，包括相对设置的两块管板1，如图2所示，在两块管板1之间横向设有若干根换热管2，换热管2的两端分别与管板之间采取焊接密封，若干根换热管2在管板1上均匀排布，所述换热管2的截面为椭圆形，其长轴方向与烟气流向5一致。Embodiment, as shown in Figure 1, an enamelled elliptical steel pipe type air heat exchanger, including two tube sheets 1 arranged oppositely, as shown in Figure 2, several heat exchangers are arranged horizontally between the two tube sheets 1 The heat pipe 2, the two ends of the heat exchange tube 2 are respectively welded and sealed with the tube plate, and several heat exchange tubes 2 are evenly arranged on the tube plate 1. The cross section of the heat exchange tube 2 is oval, and its length The axial direction is consistent with the flue gas flow direction 5 .
如图3所示，所述换热管2包括钢管3，在钢管3的外表面上搪涂有搪瓷层4，搪瓷层4的设置解决了低温腐蚀的老大难问题，延长了换热器的使用寿命，换热管采取顺利布置，加上搪瓷表面光滑，这些因素都有利于减少烟气阻力，通常流速下搪涂有搪瓷层的换热管比圆管的流阻降低40％左右，所述换热管2的长短轴之比为2∶1，使得该传热周长比相同截面的圆管长，管内的热阻小，有利管内介质的传热，椭圆管的传热面积比相同截面的圆管大12％，因此在相同流速下，管外换热面积可提高12％。As shown in Figure 3, the heat exchange tube 2 includes a steel pipe 3, and an
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202403302U CN201555473U (en) | 2009-10-26 | 2009-10-26 | Enamel oval steel tube air heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202403302U CN201555473U (en) | 2009-10-26 | 2009-10-26 | Enamel oval steel tube air heat exchanger |
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| Publication Number | Publication Date |
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| CN201555473U true CN201555473U (en) | 2010-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202403302U Expired - Lifetime CN201555473U (en) | 2009-10-26 | 2009-10-26 | Enamel oval steel tube air heat exchanger |
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| CN (1) | CN201555473U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225004A (en) * | 2016-08-30 | 2016-12-14 | 江苏国信泗阳生物质发电有限公司 | A kind of enamel elliptical tube air preheater and installation method |
| CN106288871A (en) * | 2016-08-31 | 2017-01-04 | 江阴德尔热能机械有限公司 | A kind of recirculating fluidized bed is with built-in anti-adhesion heat exchanger |
| CN107676810A (en) * | 2017-09-14 | 2018-02-09 | 广西诚顺节能环保科技有限公司 | A kind of boiler oval tube heat exchanger |
| CN112944386A (en) * | 2021-04-22 | 2021-06-11 | 刘烈春 | Boiler tube type air preheater |
| CN115127158A (en) * | 2022-01-12 | 2022-09-30 | 杭州捷瑞空气处理设备有限公司 | Rotary dehumidification regeneration high-temperature heat pump system and working method |
-
2009
- 2009-10-26 CN CN2009202403302U patent/CN201555473U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225004A (en) * | 2016-08-30 | 2016-12-14 | 江苏国信泗阳生物质发电有限公司 | A kind of enamel elliptical tube air preheater and installation method |
| CN106288871A (en) * | 2016-08-31 | 2017-01-04 | 江阴德尔热能机械有限公司 | A kind of recirculating fluidized bed is with built-in anti-adhesion heat exchanger |
| CN107676810A (en) * | 2017-09-14 | 2018-02-09 | 广西诚顺节能环保科技有限公司 | A kind of boiler oval tube heat exchanger |
| CN112944386A (en) * | 2021-04-22 | 2021-06-11 | 刘烈春 | Boiler tube type air preheater |
| CN115127158A (en) * | 2022-01-12 | 2022-09-30 | 杭州捷瑞空气处理设备有限公司 | Rotary dehumidification regeneration high-temperature heat pump system and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG HENGTAO ENERGY SAVING + ENVIRONMENTAL PRO Free format text: FORMER OWNER: FANG XITAO Effective date: 20111202 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111202 Address after: 261500, Gaomi City, Shandong province Heng Tao energy-saving environmental protection Co., Ltd. Heng Tao Industrial Park Patentee after: Shandong Hengtao Energy-Saving Environment Protection Co., Ltd. Address before: 261500 No. 3699, north of Yi An Avenue, Xia Zhuang Industrial Park, Shandong, Gaomi City Patentee before: Fang Xitao |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100818 |