CN112097530A - 一种新型预热空气换热器 - Google Patents
一种新型预热空气换热器 Download PDFInfo
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- CN112097530A CN112097530A CN201910519936.8A CN201910519936A CN112097530A CN 112097530 A CN112097530 A CN 112097530A CN 201910519936 A CN201910519936 A CN 201910519936A CN 112097530 A CN112097530 A CN 112097530A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0475—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G7/00—Cleaning by vibration or pressure waves
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air Supply (AREA)
Abstract
本发明为一种新型预热空气换热器。本发明安装在冶金炉窑烟道中,以空气作为换热载体,回收烟气中的大量余热,经预热后的空气可返回生产中起助燃作用,达到节约燃料、降低生产成本,提高燃烧温度、增加炉子的产量等;在结构上,科学合理的加长空气换热流动行程,U型列管易于清灰,变形量少等,换热效果较好;工程制作及运行成本较低,经济、节能效益明显。包括:高温段U型列管(1),低温段U型列管(2),基板(3),空气导流箱(4),冷空气进口箱(5),热空气出口箱(6),热空气联通箱(7),侧筋板(8),轴筋板(9),吊耳(10),高温段、低温段振灰架(11)。
Description
技术领域
本发明属于冶金设备技术领域,具体涉及一种新型预热空气换热器。
背景技术
换热器是用来使热量从热流体传递到冷流体,以满足规定的工艺要求的装置,是对流传热及热传导的一种工业应用;列管式换热器的结构比较简单、紧凑、造价便宜,因此冶金加热炉窑为了降低能耗,在烟道中通常设置列管式换热器,以回收烟气中的大量余热。此种换热器:直管管束连接在管板上,管板分别焊在外壳两端,并在其上连接有顶盖,顶盖和壳体装有流体进出口接管;通常在管外装置一系列垂直于管束的挡板;管子和管板与外壳的连接都是刚性的,而管内流过的是待预热空气,管外是烟道热烟气,两种不同温度的流体,当管壁与壳壁温差较大时,由于两者的热膨胀不同,产生了很大的温差应力,以至管子扭弯或使管子从管板上松脱,甚至毁坏换热器,同时由于直管传热路径较短,换热效果不明显,壳体内烟气灰尘积累,会阻塞及影响传热,清灰难度较大。
发明内容
本发明旨在提供一种体积小,换热路径长、效率高,易于清灰的新型预热空气换热器。
新型预热空气换热器为钢制组合件,总体呈长方体,尺寸约为2400mm×2600mm×2200mm,主要参数为:换热面积49m2,烟气入换热器温度900℃,烟气出换热器温度675℃,空气流量3200Nm3/h,空气入换热器温度25℃,空气出换热器温度400℃,耐压力5000Pa;预热空气换热器最顶端为并列排列的冷空气进口箱,热空气出口箱,热空气联通箱,依次往下有:空气导流箱,基板,U型列管组,高温段、低温段振灰架;空气导流箱内焊接有隔板,便于空气预热各阶段的空气流向疏导,最下端为U型列管组,列管端部开口焊接在基板上,基板把空气导流箱和U型列管组连接起来,高温段、低温段振灰架与震动电机连接,通过震动可清除烟尘在U型列管上的积灰,烟道侧面有清灰门,便于移除落灰;工作原理为:U型列管组部分敞开放置在高温烟道中,冷空气经冷空气进口箱——低温段U型列管——空气导流箱——热空气联通箱——高温段U型列管——热空气出口箱,空气流向与烟气流向相逆;预热空气换热器在结构上,科学合理的加长空气换热流动行程,U型列管易于清灰,变形量少等,换热效果较好;工程制作及运行成本较低,经济、节能效益明显。
附图说明
图1预热空气换热器简图。
图2预热空气换热器俯视图。
图3预热空气换热器A视图。
图4预热空气换热器B视图。
图5预热空气换热器空气导流箱图。
图6预热空气换热器C视图。
图7预热空气换热器D视图。
具体实施方式
根据附图1~7所示的一种新型预热空气换热器,包括:高温段U型列管(1),低温段U型列管(2),基板(3),空气导流箱(4),冷空气进口箱(5),热空气出口箱(6),热空气联通箱(7),侧筋板(8),轴筋板(9),吊耳(10),高温段、低温段振灰架(11)。
高温段U型列管(1),低温段U型列管(2)材料为:310S(0Cr25Ni20)不锈钢管,尺寸为直径φ60mm,壁厚δ3.5mm。
所述基板(3)材料为:310S(0Cr25Ni20)不锈钢板,厚δ12mm。
所述空气导流箱(4)为长方体形,由20G,δ10mm锅炉钢板采用连续焊接工艺制作,由边板(12),隔条(13),长盖板(14),短盖板(15)组成,起到空气流向的疏导功能。
所述冷空气进口箱(5),热空气出口箱(6),热空气联通箱(7),由20G,δ10mm锅炉钢板采用连续焊接工艺制作,并列排列在预热空气换热器最顶端。依次往下有:空气导流箱,基板,U型列管组,高温段、低温段振灰架;空气导流箱内焊接有隔板,便于空气预热各阶段的空气流向疏导,最下端为U型列管组,列管端部开口焊接在基板上,基板把空气导流箱和U型列管组连接起来,高温段、低温段振灰架与震动电机连接,可清除烟尘在U型列管上的积灰;工作原理为:U型列管组部分敞开放置在高温烟道中,冷空气经冷空气进口箱——低温段U型列管——空气导流箱——热空气联通箱——高温段U型列管——热空气出口箱,空气流向与烟气流向相逆;预热空气换热器在结构上,科学合理的加长空气换热流动行程,U型列管易于清灰,变形量少等,换热效果较好;工程制作及运行成本较低,经济、节能效益明显。
所述侧筋板(8),轴筋板(9),吊耳(10),由Q235B,δ10mm钢板采用连续焊接工艺制作,起到加固和吊装作用。
所述高温段、低温段振灰架(11),由310S,5#不锈钢角钢采用连续焊接工艺与振动电机连接。
Claims (3)
1.一种新型预热空气换热器,包括高温段U型列管(1),低温段U型列管(2),基板(3),空气导流箱(4),冷空气进口箱(5),热空气出口箱(6),热空气联通箱(7),侧筋板(8),轴筋板(9),吊耳(10),高温段、低温段振灰架(11)。
2.根据权利要求1所述的一种新型预热空气换热器,其特征在于:所述空气导流箱(4)为长方体形,由20G,δ10mm锅炉钢板采用连续焊接工艺制作,由边板(12),隔条(13),长盖板(14),短盖板(15)组成,起到空气流向的疏导功能。
3.根据权利要求1所述的一种新型预热空气换热器,其特征在于:所述冷空气进口箱(5),热空气出口箱(6),热空气联通箱(7),由20G,δ10mm锅炉钢板采用连续焊接工艺制作,并列排列在预热空气换热器最顶端;依次往下有:空气导流箱,基板,U型列管组,高温段、低温段振灰架;空气导流箱内焊接有隔板,便于空气预热各阶段的空气流向疏导,最下端为U型列管组,列管端部开口焊接在基板上,基板把空气导流箱和U型列管组连接起来,高温段、低温段振灰架与震动电机连接,可清除烟尘在U型列管上的积灰;工作原理为:U型列管组部分敞开放置在高温烟道中,冷空气经冷空气进口箱——低温段U型列管——空气导流箱——热空气联通箱——高温段U型列管——热空气出口箱,空气流向与烟气流向相逆;预热空气换热器在结构上,科学合理的加长空气换热流动行程,U型列管易于清灰,变形量少等,换热效果较好;工程制作及运行成本较低,经济、节能效益明显。
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CN114353558A (zh) * | 2021-12-31 | 2022-04-15 | 南通科赛尔机械有限公司 | 一种新型换热器 |
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