CN1228155A - 旋转式再生换热器的装置 - Google Patents

旋转式再生换热器的装置 Download PDF

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CN1228155A
CN1228155A CN97197372A CN97197372A CN1228155A CN 1228155 A CN1228155 A CN 1228155A CN 97197372 A CN97197372 A CN 97197372A CN 97197372 A CN97197372 A CN 97197372A CN 1228155 A CN1228155 A CN 1228155A
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fanning strip
flange
rotor
gap
protuberance
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K·卡尔松
S·伦丁
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Alstom Power Inc
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ABB Air Preheater Inc
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Publication of CN1228155A publication Critical patent/CN1228155A/zh
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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
    • F23L15/02—Arrangements of regenerators
    • 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
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/006—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for regenerative heat-exchange apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B13/00—Measuring arrangements characterised by the use of fluids
    • G01B13/12—Measuring arrangements characterised by the use of fluids for measuring distance or clearance between spaced objects or spaced apertures
    • 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)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Air Supply (AREA)
  • Measuring Arrangements Characterized By The Use Of Fluids (AREA)
  • Power Steering Mechanism (AREA)
  • Liquid Developers In Electrophotography (AREA)

Abstract

本发明涉及一种再生旋转式换热器中的装置，用于控制在一个围绕转子(1)端面径向向外凸出的凸缘(8)与扇形板(3，4)之间的间隙，所述扇形板相对于所述转子的端面作轴向运动并将两种热交换介质(5，6)相互分隔开。根据本发明，间隙检测装置(7)安装在凸出部(12)上，凸出部(12)从靠近转子凸缘(8)的扇形板边缘周向凸出，从而所述检测装置位于热交换介质的流动路径中。

Description

旋转式再生换热器的装置
本发明涉及一种在再生式旋转换热器中的装置，更具体地说，涉及一种在空气预热器中的装置，其用于检测并控制在一个围绕转子端面向外径向凸出的凸缘与将两个热交换介质相互隔离开的相对于该端面轴向可动的转子扇形板之间的间隙。
这种装置长期以来一直是一个广泛开发的课题。需要解决的问题是，间隙检测或传感装置常常被暴露在容易出问题的环境条件下，即，暴露在腐蚀性且肮脏的大气中，其气压和温度在转子旋转时会发生明显的变化。这是由于当转子扇形区靠近及离开扇形板的边缘时，热交换介质将交替地围绕这些扇形区快速地在扇形板和转子凸缘之间以变换的高压和低压流动，并对其产生干扰。尽管人们努力来补偿这些干扰，但周围环境条件使得传感很不稳定。从而开发工作转向更为复杂精密的解决方案，例如包括用于补偿磨损的前向进给装置和气垫装置的滑瓦。
本发明的目的是提供一种简单而可靠的传感器或检测器装置，周围环境条件对这种装置基本上不产生影响。
为达到这一目的，采用了具有所附权利要求1中所述特征的一种装置。在权利要求2和3中限定了两个独立的优选实施例。
通过将与扇形板连接的检测器或传感器置于所述板的区域之外，即，使之位于各热交换介质的通路内，传感器所经受的环境条件则稳定在正常的工作范围之内。如将从权利要求2及3可以看到的，可以采用简单且操作可靠的通过冷却清洗用压缩空气贯通清洗的传感器或检测器，这些传感器所受到的干扰不会比能够以适当方式补偿的干扰更为严重。
现将参照附图及本发明传感器装置的实施例对本发明进行更详细地描述，可以更容易地理解本发明并使其特点更为显而易见，其中，
图1表示上述的一个空气预热器；以及
图2是表示检测及控制转子凸缘及扇形板之间的间隙的侧视图。
图1表示一个一般的旋转式再生空气预热器，用于利用排出的气体对参与燃烧的空气进行预热。该预热器包括一个固定的壳体1，一个可旋转的转子安装于其中，该转子中具有可再生物质并以约1r.p.m(转/分)的速度旋转。安装两个扇形板3,4用以限定相对于转子作轴向运动，这两个扇形板设置在靠近转子的端面处、位于所述转子的上方和下方。扇形板3,4用于将气体侧5与空气侧6隔离开，虽然由于转子的旋转而使气体及空气可以进入各扇形板边缘的下方，但是只要能使扇形板板3、4与转子端部之间的缝隙保持较小，即使转子的端部不是完全平直的、而是由于热变形使得这些端部很容易显著地偏离平直状态，但气体及空气也不会从一侧直接渗漏到另一侧。
扇形板的各外端均由两个传感器7进行导向。这些传感器与一个凸缘8协同动作，该凸缘8围绕转子、分别于其顶部及底部沿周向延伸，图2所示为从图1中的箭头P的方向观察时空气预热器的顶部部分，设定装置10连接到所述传感器上并固定地安装在壳体1内，同时借助各调节杆11铰接到扇形板3,4上。传感器7安装在周缘凸出部12上，该凸出部12从每一扇形板3,4的每一个侧边缘上的径向最外侧点向外延伸并与一个相邻的平卧转子凸缘8对置。
转子2由径向延伸的壁13分隔成许多扇形区，这些壁的竖直边缘标出在图2中。当壁13在图中从右至左通过扇形板4的由K标识的边缘时，气体侧5突然地与扇形区14连通，导致压力和温度的突然变化，直到由15标识的扇形区位于最初提到的位置，即间隙传感器通常所处的精确位置。在空气侧6所处的扇形板4的另一侧边缘(图2中未示出)上产生相应的干扰。通过将传感器7安装到凸出部12上，该传感器7将完全位于各气体侧和空气侧之内，其中将保持稳定的压力和温度条件处于正常工作状态。干扰仅出现在操作开始或结束时，或出现在负载发生明显变化时，这时，除非采取独立的补偿措施，否则需要采用监控系统。这使得可以采用压缩空气驱动的传感器，这种传感器特别适用于这种特定情况，其中，采用压缩空气来冷却传感器，与此同时，将传感器所处的换热器的区域吹洗干净。可借助于指向凸缘8的压缩空气喷射流来探测和检测间隙，间隙的大小可由压力侧的压力变化反映出来。或者可采用一个压缩空气操作的管，该管被调谐到一个特定的谐振频率。管的出口与凸缘8之间的距离的任何变化均将导致管的谐振频率产生相应变化。

Claims (3)

1、一种再生式旋转换热器中、特别是一种空气预热器中的装置，它用于检测并控制围绕转子(2)的端面向外径向凸出的凸缘(8)与相对于该端面轴向可动的扇形板(3,4)之间的间隙，所述扇形板(3,4)将热交换介质(5,6)相互隔离开，其特征在于，所述扇形板(3,4)各自设置有至少一个凸出部(12)，该凸出部沿周向从对置于转子凸缘(8)的扇形板的一个边缘突出，在该凸出部上安装有一个间隙检测装置(7)。
2、如权利要求1所述的装置，其特征在于，所述间隙检测装置(7)包括用于将压缩空气喷射流指向相邻的转子凸缘(8)上的装置，利用压缩空气的压力变化可控制设定装置(10)以调整扇形板(3,4)的定位。
3、如权利要求1所述的装置，其特征在于，所述间隙检测装置(7)包括一个由压缩空气驱动的管，该管被调谐到一个特定的谐振频率并具有一个靠近转子凸缘(8)的开口，从而间隙的变化将由所述管的谐振频率的变化来表示，所述变化将起到控制扇形板(3,4)之调节装置(10)的作用。
CN97197372A 1996-08-15 1997-08-14 旋转式再生换热器的装置 Pending CN1228155A (zh)

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SE9602992A SE517213C2 (sv) 1996-08-15 1996-08-15 Anordning vid en regenerativ, roterande värmväxlare
SE96029921 1996-08-15

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US (1) US6119764A (zh)
EP (1) EP0954736B1 (zh)
JP (1) JP2000516697A (zh)
KR (1) KR20000029959A (zh)
CN (1) CN1228155A (zh)
AU (1) AU721436B2 (zh)
BR (1) BR9711136A (zh)
CA (1) CA2261261A1 (zh)
CZ (1) CZ291670B6 (zh)
DE (1) DE69716950D1 (zh)
HU (1) HUP0102918A3 (zh)
IL (1) IL128126A (zh)
PL (1) PL184900B1 (zh)
SE (1) SE517213C2 (zh)
WO (1) WO1998006993A1 (zh)
YU (1) YU7199A (zh)

Cited By (2)

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CN102597682A (zh) * 2009-09-11 2012-07-18 阿尔斯通技术有限公司 用于非接触感测以便最大限度地减小空气预热器中的工艺流之间的泄漏的系统和方法
CN110530303A (zh) * 2019-08-28 2019-12-03 深圳东方锅炉控制有限公司 气动式空气预热器的漏风间隙控制系统及其控制方法

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EP1777478A1 (de) * 2005-10-19 2007-04-25 Balcke-Dürr GmbH Regenerativ-Wärmetauscher sowie Verfahren zum Überprüfen eines Dichtspalts zwischen einem Heizflächenträger eines Regenerativ-Wärmetauschers und einer Dichtung
US8973649B2 (en) * 2008-12-23 2015-03-10 Tai-Her Yang Heat exchange apparatus with a rotating disk and automatic control of heat exchange between two fluid streams by modulation of disk rotating speed and/or flow rate
NO334410B1 (no) 2010-09-10 2014-02-24 Flexit As Ventilasjonssystem
DE102015015133A1 (de) 2015-11-23 2017-05-24 Balcke-Dürr GmbH Regenerativer Wärmeübertrager mit verbessertem Dichtrahmen
CN105486162B (zh) * 2015-12-31 2018-05-18 上海市东方海事工程技术有限公司 一种光纤式空气预热器漏风控制系统及其控制方法
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CN102597682A (zh) * 2009-09-11 2012-07-18 阿尔斯通技术有限公司 用于非接触感测以便最大限度地减小空气预热器中的工艺流之间的泄漏的系统和方法
CN102597682B (zh) * 2009-09-11 2015-07-22 傲华科技有限公司 用于非接触感测以便最大限度地减小空气预热器中的工艺流之间的泄漏的系统和方法
CN110530303A (zh) * 2019-08-28 2019-12-03 深圳东方锅炉控制有限公司 气动式空气预热器的漏风间隙控制系统及其控制方法

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Publication number Publication date
YU7199A (en) 1999-11-22
CZ9900466A3 (cs) 2000-10-11
US6119764A (en) 2000-09-19
CA2261261A1 (en) 1998-02-19
HUP0102918A2 (hu) 2001-12-28
HUP0102918A3 (en) 2002-03-28
SE9602992D0 (sv) 1996-08-15
EP0954736A1 (en) 1999-11-10
CZ291670B6 (cs) 2003-04-16
WO1998006993A1 (en) 1998-02-19
IL128126A0 (en) 1999-11-30
JP2000516697A (ja) 2000-12-12
BR9711136A (pt) 2000-01-11
AU721436B2 (en) 2000-07-06
PL184900B1 (pl) 2003-01-31
SE9602992L (sv) 1998-02-16
KR20000029959A (ko) 2000-05-25
DE69716950D1 (de) 2002-12-12
PL331524A1 (en) 1999-07-19
EP0954736B1 (en) 2002-11-06
IL128126A (en) 2001-04-30
SE517213C2 (sv) 2002-05-07
AU3873097A (en) 1998-03-06

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