CN106705008A - 一种集束双套管急冷式余热锅炉结构 - Google Patents

一种集束双套管急冷式余热锅炉结构 Download PDF

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CN106705008A
CN106705008A CN201611019605.0A CN201611019605A CN106705008A CN 106705008 A CN106705008 A CN 106705008A CN 201611019605 A CN201611019605 A CN 201611019605A CN 106705008 A CN106705008 A CN 106705008A
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魏振文
崔建波
于国庆
王啸
赵桂晓
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QINGDAO DORIGHT CO Ltd
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QINGDAO DORIGHT CO Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00Methods of steam generation characterised by form of heating method
    • F22B1/02Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F2009/0285Other particular headers or end plates
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

一种集束双套管急冷式余热锅炉结构,由上联箱,下联箱和集束双套管等组成;上联箱由上管板、下管板、圆筒短接、水汽出口管和上法兰等组成;上联箱的下管板通过圆筒短接与上法兰焊接,上管板直接焊接在圆筒短接的内壁上;下联箱由上管板X、下管板X、内筒短接、外筒短接、冷水进口管和下法兰等组成;下联箱的下管板X和上管板X分别通过内外筒短接与下法兰焊接;其特征是:上下联箱的四个管板都采用翻边的柔性(薄)管板;与其它三个管板在翻边以内都是平板不同,上联箱的上管板在翻边以内是球面板;比重较轻的水汽靠浮力驱动会朝球面的高处走,因而形成导向机制,避免管板上任何一处有流速过慢现象产生,确保上联箱全体受热管免受过热损坏。

Description

一种集束双套管急冷式余热锅炉结构
技术领域
本发明涉及一种化工设备,尤其是集束双套管上下联箱急冷式余热锅炉。
背景技术
现有技术(专利号:201310245480.3)急冷式余热锅炉在换热段的上联箱结构上,把普通上管板改为盘形上管板,借此提高了上联箱水汽出口的高度并缩小了上下管板之间的距离,这一改进使锅炉的受热管在上联箱发生过热损坏的几率变低了。但是,现有技术上联箱的上管板仍然是水平安装的平面管板,围绕上管板的外圆筒很大,周长有四五米,而上联箱的水汽出口只有三个点,在水汽向外流动中靠近外圆筒筒壁各点的流速差别较大,靠近出口的流速要快一些压力也低一些,远离出口的流速要慢一些压力也高一些,平管板对水汽的流动没有任何导向机制,哪里压力低水汽就容易向哪里流动而且流速也快,反之哪里压力高哪里流速就慢,流速过慢的地方受热管仍然有发生过热损坏的可能,不能确保上联箱全体受热管的安全。
发明内容
为了解决上述问题,本发明设法让上联箱的水汽在贴近上管板流动时,能四面八方有序流动,促使水汽流速均匀化,避免任何一块区域有流速过慢现象产生。
本发明解决其技术问题所采用的技术方案是:一种集束双套管急冷式余热锅炉结构,由上联箱,下联箱和集束双套管组成;上联箱由上管板、下管板、圆筒短接、水汽出口管和上法兰等组成;上联箱的下管板通过圆筒短接与上法兰焊接,上管板直接焊接在圆筒短接的内壁上;上联箱的上下管板之间的最小距离约为内管直径大小;下联箱由上管板X、下管板X、内筒短接、外筒短接、冷水进口管和下法兰等组成;下联箱的下管板X通过内筒短接与下法兰焊接,上管板X通过外筒短接也与下法兰焊接;下联箱的上管板X和下管板X之间的距离应不小于外管直径大小;集束双套管由内管和外管等组成,集束双套管内管的上端与上联箱的上管板焊接,下端与下联箱的下管板X焊接;集束双套管外管的上端与上联箱的下管板焊接,下端与下联箱的上管板X焊接;其特征是:上下联箱的四个管板都采用翻边的柔性(薄)管板;与其它三个管板在翻边以内都是平板不同,上联箱的上管板在翻边以内是球面板。
本发明的有益效果,一是上联箱的上管板由平板改为球面板,比重较轻的水汽靠浮力驱动会朝球面的高处走,因而形成导向机制,避免管板上任何一处有流速过慢现象产生,确保上联箱全体受热管免受过热损坏。二是上下联箱的四个管板由标准厚管板改为柔性(薄)管板,除了减轻管板重量外,主要是能吸收结构热应力,可有效保护上下联箱免受热应力损坏。
附图说明
图1是本发明集束双套管急冷式余热锅炉结构示意图和实施例。
图1中①上联箱,②集束双套管,③下联箱;1.上管板,2.下管板,3.圆筒短接,4.水汽出口管,5.上法兰,6.上管板X,7.下管板X,8.内筒短接,9.外筒短接,10.冷水进口管,11.下法兰,12.外管,13.内管,14.耐火砌料,15.保护管。
具体实施方式
本发明集束双套管急冷式余热锅炉结构,由上联箱(①),集束双套管(②)和下联箱(③)组成;上联箱由上管板(1)、下管板(2)、圆筒短接(3)、水汽出口管(4)和上法兰(5)等组成;集束双套管由外管(12)和内管(13)等组成;下联箱由上管板X(6)、下管板X(7)、内筒短接(8)、外筒短接(9)、冷水进口管(10)和下法兰(11)等组成。
上联箱和下联箱的四个管板均按薄管板理论进行壁厚设计,这样不单节省材料,还能有效吸收锅炉结构的热应力。

Claims (1)

1.一种集束双套管急冷式余热锅炉结构,由上联箱,下联箱和集束双套管组成;上联箱由上管板、下管板、圆筒短接、水汽出口管和上法兰组成;上联箱的下管板通过圆筒短接与上法兰焊接,上管板直接焊接在圆筒短接的内壁上;上联箱的上下管板之间的最小距离约为内管直径大小;下联箱由上管板X、下管板X、内筒短接、外筒短接、冷水进口管和下法兰组成;下联箱的下管板X通过内筒短接与下法兰焊接,上管板X通过外筒短接也与下法兰焊接;下联箱的上管板X和下管板X之间的距离应不小于外管直径大小;集束双套管由内管和外管组成,集束双套管内管的上端与上联箱的上管板焊接,下端与下联箱的下管板X焊接;集束双套管外管的上端与上联箱的下管板焊接,下端与下联箱的上管板X焊接;其特征是:上下联箱的四个管板都采用翻边的柔性(薄)管板;与其它三个管板在翻边以内都是平板不同,上联箱的上管板在翻边以内是球面板。
CN201611019605.0A 2016-11-16 2016-11-16 一种集束双套管急冷式余热锅炉结构 Pending CN106705008A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110056848A (zh) * 2018-04-23 2019-07-26 新能能源有限公司 高温高压烟气余热利用系统

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US20080041563A1 (en) * 2003-09-08 2008-02-21 Graham Robert G Heat exchangers with novel ball joints and assemblies and processes using such heat exchangers
CN101852556A (zh) * 2010-06-08 2010-10-06 南京工业大学 高温高含尘炉气急冷器
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CN206222278U (zh) * 2016-11-16 2017-06-06 青岛德固特节能装备股份有限公司 一种急冷式余热锅炉换热段结构

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US20080041563A1 (en) * 2003-09-08 2008-02-21 Graham Robert G Heat exchangers with novel ball joints and assemblies and processes using such heat exchangers
CN102032818A (zh) * 2009-09-29 2011-04-27 湖北登峰换热器有限公司 高效强化抗振动的管片-管壳式换热器
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110056848A (zh) * 2018-04-23 2019-07-26 新能能源有限公司 高温高压烟气余热利用系统
CN110056848B (zh) * 2018-04-23 2024-05-03 新能能源有限公司 高温高压烟气余热利用系统

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