EP0821212B1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
EP0821212B1
EP0821212B1 EP97109258A EP97109258A EP0821212B1 EP 0821212 B1 EP0821212 B1 EP 0821212B1 EP 97109258 A EP97109258 A EP 97109258A EP 97109258 A EP97109258 A EP 97109258A EP 0821212 B1 EP0821212 B1 EP 0821212B1
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EP
European Patent Office
Prior art keywords
tube
heat
exchange tubes
heat exchange
rapping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97109258A
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German (de)
French (fr)
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EP0821212A3 (en
EP0821212A2 (en
Inventor
Jean-Claude Hein
Johannes Gaugenmaier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MG Technologies AG
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MG Technologies AG
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Filing date
Publication date
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Publication of EP0821212A2 publication Critical patent/EP0821212A2/en
Publication of EP0821212A3 publication Critical patent/EP0821212A3/en
Application granted granted Critical
Publication of EP0821212B1 publication Critical patent/EP0821212B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • 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

Definitions

  • the invention relates to a heat exchanger with numerous cooling fluids flowed through, approximately parallel to each other heat exchange tubes, which in a channel through which hot gas flows are arranged, each Heat exchange tube has several turns and in the area between the Turns is in contact with a tap tube, with jerky movements of the Knock tube generate vibrations in the heat exchange tubes.
  • a heat exchanger of this type is known from DE 4121815, the tubes in the Area of adjacent turns to be hit against each other for cleaning. The detachment of deposits takes place in a very similar manner in the case of those from US-A-3997000 and DE 2809735 A known heat exchangers with vibrators.
  • the invention is based on the object, deposits and caking on the Eliminate heat exchange tubes in a simple and effective manner. According to the invention, this is achieved with the heat exchanger of the type mentioned at the beginning in that each heat exchange tube is stationary in the area of all of its turns is attached. The knock tube generates vibrations of the heat exchange tubes and this will cause the toppings to come off and fall off.
  • the knock pipe which vibrates in the Heat exchange tubes can be produced in various ways be trained.
  • the knock pipe advantageously runs in the Area of contact with the heat exchange tubes, for example perpendicular to the heat exchange tubes. This can cause bumps intense vibrations in the knocking tube generate the heat exchange tubes.
  • the knock pipe with the Heat exchange tubes is connected, but this connection is expedient to a stable arrangement even in continuous operation to have.
  • the knock pipe is wound several times and designed to be elastically movable, with impacts on it Turns are transferred to the heat exchange tubes. there it is possible to only use the heat exchange tubes to initiate in sections.
  • the hot gases shown in cross section in FIG gas channel (1) with an upward flow has several inside Heat exchange tubes (2).
  • a single heat exchange tube (2) visible and it is in Fig. 2nd in its form with several turns (2a), (2b) and (2c) detect. They are in the area of the turns Heat exchange tubes (2) attached to supports (3), the self are connected again with vertical support tubes (4).
  • Figure 1 is the connection between the supports (3) and Heat exchange tubes (2) for better clarity not shown.
  • the heat exchange tubes (2) are in Connection with collecting chambers (6) and (7) for the inlet and Removal of cooling fluid, e.g. Water vapor, water, air or oil.
  • a tapping tube (8) which is shown in view in Figure 3, runs perpendicular to the heat exchange tubes (2) and is included coupled this.
  • the coupling exists from tabs (9) with the tapping tube (8) and a horizontal part of a heat exchange tube are welded.
  • the tabs are the better ones Not shown for clarity.
  • Tabs can e.g. B. sleeves can also be used.
  • both the support tubes (4) and the tapping tube (8) flowed through by cooling fluid be trained.
  • the tapping tube (8) has through its tortuous shape, see FIG. 3, a certain elasticity in Direction perpendicular to the heat exchange tubes (2).
  • the Knock tube is connected to a plunger (10) that goes through the wall of the channel (1) is led to the outside.
  • jerky Movements of the ram (10) e.g. by blows with a Hammer, be connected to the tapping tube (8)
  • Heat exchange tubes (2) perpendicular to their longitudinal axis triggered and thus set in short vibrations. This Vibrations cause the deposits on the Outside of the heat exchange tubes (2).
  • the knocking tube (8) from the outside can not only be mechanical but e.g. can also be done pneumatically or electromagnetically.
  • the tapping tube (8a) shown schematically in Figure 4 is wound several times and has several, led to the outside Ram (10).
  • the connection of this tap tube (8a) with the associated heat exchange tubes, which are analogous to FIG. 3 is left out in Figure 4.
  • tapping tube (8b) shown in FIG. 5 shows the guide of the kinked in the area of the turns (18) Tapping tube (8b).
  • This shape of the turns ensures that pushing a single plunger to vibrate in the Knock pipe leads that does not affect other areas of the Knock tube are transmitted. Otherwise they have Reference numerals in Figure 5 that previously explained Importance.
  • the tapping of the heat exchange tubes according to the invention can for both horizontal and vertical flow Channels or boilers can be used.

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

Description

Die Erfindung betrifft einen Wärmeaustauscher mit zahlreichen, von einem Kühlfluid durchströmten, etwa parallel zueinander verlaufenden Wärmeaustauschrohren, die in einem von heißem Gas durchströmten Kanal angeordnet sind, wobei jedes Wärmeaustauschrohr mehrere Windungen aufweist und im Bereich zwischen den Windungen mit einem Klopfrohr in Berührung steht, wobei ruckartige Bewegungen des Klopfrohrs Schwingungen in den Wärmeaustauschrohren erzeugen.The invention relates to a heat exchanger with numerous cooling fluids flowed through, approximately parallel to each other heat exchange tubes, which in a channel through which hot gas flows are arranged, each Heat exchange tube has several turns and in the area between the Turns is in contact with a tap tube, with jerky movements of the Knock tube generate vibrations in the heat exchange tubes.

Ein Wärmeaustauscher dieser Art ist aus DE 4121815 bekannt, wobei die Rohre im Bereich benachbarter Windungen zum Abreinigen gegeneinander geschlagen werden. In ganz ähnlicher Weise erfolgt das Ablösen von Belägen bei den aus US-A-3997000 und DE 2809735 A bekannten Wärmeaustauschern mit Rüttelvorrichtungen.A heat exchanger of this type is known from DE 4121815, the tubes in the Area of adjacent turns to be hit against each other for cleaning. The detachment of deposits takes place in a very similar manner in the case of those from US-A-3997000 and DE 2809735 A known heat exchangers with vibrators.

Der Erfindung liegt die Aufgabe zu Grunde, Beläge und Anbackungen auf den Wärmeaustauschrohren auf einfache und wirksame Weise zu beseitigen. Erfindungsgemäß gelingt dies beim Wärmeaustauscher der eingangs genannten Art dadurch, dass jedes Wärmeaustauschrohr im Bereich aller seiner Windungen ortsfest befestigt ist. Das Klopfrohr erzeugt Schwingungen der Wärmeaustauschrohre und dadurch lösen sich die Beläge und fallen ab. The invention is based on the object, deposits and caking on the Eliminate heat exchange tubes in a simple and effective manner. According to the invention, this is achieved with the heat exchanger of the type mentioned at the beginning in that each heat exchange tube is stationary in the area of all of its turns is attached. The knock tube generates vibrations of the heat exchange tubes and this will cause the toppings to come off and fall off.

Das Klopfrohr, das die Schwingungen in den Wärmeaustauschrohren erzeugt, kann auf verschiedenartige Weise ausgebildet sein. Vorteilhafterweise verläuft das Klopfrohr im Bereich der Berührung mit den Wärmeaustauschrohren etwa senkrecht zu den Wärmeaustauschrohren. Dadurch können Stöße auf das Klopfrohr intensive Schwingungen und Vibrationen in den Wärmeaustauschrohren erzeugen.The knock pipe, which vibrates in the Heat exchange tubes can be produced in various ways be trained. The knock pipe advantageously runs in the Area of contact with the heat exchange tubes, for example perpendicular to the heat exchange tubes. This can cause bumps intense vibrations in the knocking tube generate the heat exchange tubes.

Es ist nicht unbedingt erforderlich, daß das Klopfrohr mit den Wärmeaustauschrohren verbunden ist, doch ist diese Verbindung zweckmäßig, um eine auch im Dauerbetrieb stabile Anordnung zu haben. Üblicherweise ist das Klopfrohr mehrfach gewunden und elastisch bewegbar ausgebildet, wobei Stöße auf seine Windungen auf die Wärmeaustauschrohre übertragen werden. Dabei ist es möglich, die Wärmeaustauschrohre auch nur abschnittsweise anzustoßen.It is not absolutely necessary that the knock pipe with the Heat exchange tubes is connected, but this connection is expedient to a stable arrangement even in continuous operation to have. Usually, the knock pipe is wound several times and designed to be elastically movable, with impacts on it Turns are transferred to the heat exchange tubes. there it is possible to only use the heat exchange tubes to initiate in sections.

Ausgestaltungsmöglichkeiten des Wärmeaustauschers werden mit Hilfe der Zeichnung erläutert. Es zeigt:

  • Figur 1 einen Horizontalschnitt nach der Linie I-I in Fig. 2 durch einen vertikal durchströmten Gaskanal mit Wärmeaustauschrohren und einem Klopfrohr in der Sicht von oben,
  • Figur 2 einen vertikalen Schnitt nach der Linie II-II in Figur 1,
  • Figur 3 einen vertikalen Schnitt nach der Linie III-III in den Figuren 1 und 2
  • Figur 4 eine Sicht analog zu Figur 3 auf eine Variante einem Klopfrohrs in schematischer Darstellung und
  • Figur 5 ein Klopfrohr, das mit zwei Wärmeaustauschrohren zusammenwirkt, in perspektivischer Darstellung.
    • Design options of the heat exchanger are explained with the help of the drawing. It shows:
  • FIG. 1 shows a horizontal section along the line II in FIG. 2 through a gas channel with a vertical flow, with heat exchange tubes and a knocking tube, viewed from above,
  • FIG. 2 shows a vertical section along the line II-II in FIG. 1,
  • 3 shows a vertical section along the line III-III in FIGS. 1 and 2
  • Figure 4 is a view analogous to Figure 3 of a variant of a knock pipe in a schematic representation
  • Figure 5 shows a knocking tube, which cooperates with two heat exchange tubes, in a perspective view.

    • Der in Figur 1 im Querschnitt dargestellte, von heißen Gasen aufwärts durchströmte Gaskanal (1) weist im Innern mehrere Wärmeaustauschrohre (2) auf. Im senkrechten Schnitt entlang der Linie II-II in Figur 1 durch den Kanal (1) wird ein einzelnes Wärmeaustauschrohr (2) sichtbar und es ist in Fig. 2 in seiner Form mit mehreren Windungen (2a), (2b) und (2c) zu erkennen. Im Bereich der Windungen sind die Wärmeaustauschrohre (2) an Auflagern (3) befestigt, die selbst wieder mit vertikalen Tragrohren (4) verbunden sind. In Figur 1 ist die Verbindung zwischen den Auflagern (3) und den Wärmeaustauschrohren (2) der besseren Übersichtlichkeit wegen nicht dargestellt. Die Wärmeaustauschrohre (2) stehen in Verbindung mit Sammelkammern (6) und (7) für die Zu- und Abfuhr von Kühlfluid, z.B. Wasserdampf, Wasser, Luft oder Öl.The hot gases shown in cross section in FIG gas channel (1) with an upward flow has several inside Heat exchange tubes (2). In a vertical section along the line II-II in Figure 1 through the channel (1) is a single heat exchange tube (2) visible and it is in Fig. 2nd in its form with several turns (2a), (2b) and (2c) detect. They are in the area of the turns Heat exchange tubes (2) attached to supports (3), the self are connected again with vertical support tubes (4). In Figure 1 is the connection between the supports (3) and Heat exchange tubes (2) for better clarity not shown. The heat exchange tubes (2) are in Connection with collecting chambers (6) and (7) for the inlet and Removal of cooling fluid, e.g. Water vapor, water, air or oil.

    Ein Klopfrohr (8), das in Ansicht in Figur 3 dargestellt ist, verläuft senkrecht zu den Wärmeaustauschrohren (2) und ist mit diesen gekoppelt. Im vorliegenden Fall besteht die Kopplung aus Laschen (9), die mit dem Klopfrohr (8) und einem etwa horizontal verlaufenden Teil eines Wärmeaustauschrohr verschweißt sind. In Figur 1 sind die Laschen der besseren Übersichtlichkeit wegen nicht dargestellt. Anstelle von Laschen können z. B. auch Hülsen verwendet werden.A tapping tube (8), which is shown in view in Figure 3, runs perpendicular to the heat exchange tubes (2) and is included coupled this. In the present case, the coupling exists from tabs (9) with the tapping tube (8) and a horizontal part of a heat exchange tube are welded. In Figure 1 the tabs are the better ones Not shown for clarity. Instead of Tabs can e.g. B. sleeves can also be used.

    Ebenso wie die Wärmeaustauschrohre können sowohl die Tragrohre (4) als auch das Klopfrohr (8) von Kühlfluid durchflossen ausgebildet sein. Das Klopfrohr (8) besitzt durch seine gewundene Form, vergl. Figur 3, eine gewisse Elastizität in Richtung senkrecht zu den Wärmeaustauschrohren (2). Mit dem Klopfrohr ist ein Stößel (10) verbunden, der durch die Wand des Kanals (1) nach außen geführt ist. Durch stoßartige Bewegungen des Stößels (10), z.B. durch Schläge mit einem Hammer, werden die mit dem Klopfrohr (8) verbundenen Wärmeaustauschrohre (2) senkrecht zu ihrer Längsachse angestoßen und dadurch in kurze Schwingungen versetzt. Diese Schwingungen bewirken das Ablösen von Belägen auf der Außenseite der Wärmeaustauschrohre (2). Das ruckartige Bewegen des Klopfrohrs (8) von außen kann nicht nur mechanisch sondern z.B. auch pneumatisch oder elektromagnetisch erfolgen.Just like the heat exchange tubes, both the support tubes (4) and the tapping tube (8) flowed through by cooling fluid be trained. The tapping tube (8) has through its tortuous shape, see FIG. 3, a certain elasticity in Direction perpendicular to the heat exchange tubes (2). With the Knock tube is connected to a plunger (10) that goes through the wall of the channel (1) is led to the outside. By jerky Movements of the ram (10), e.g. by blows with a Hammer, be connected to the tapping tube (8) Heat exchange tubes (2) perpendicular to their longitudinal axis triggered and thus set in short vibrations. This Vibrations cause the deposits on the Outside of the heat exchange tubes (2). The jerky movement The knocking tube (8) from the outside can not only be mechanical but e.g. can also be done pneumatically or electromagnetically.

    Das in Figur 4 schematisch dargestellte Klopfrohr (8a) ist mehrfach gewunden und weist mehrere, nach außen geführte Stößel (10) auf. Die Verbindung dieses Klopfrohrs (8a) mit den zugehörigen Wärmeaustauschrohren, die analog zu Figur 3 zu denken ist, wurde in Figur 4 weggelassen. Durch Anstoßen von nur einem von mehreren vorhandenen Stößeln (10) können nur einzelne Bereiche der Wärmeaustauschrohre in Schwingungen versetzt und dadurch abgereinigt werden.The tapping tube (8a) shown schematically in Figure 4 is wound several times and has several, led to the outside Ram (10). The connection of this tap tube (8a) with the associated heat exchange tubes, which are analogous to FIG. 3 is left out in Figure 4. By toasting only one of several existing plungers (10) can only individual areas of the heat exchange tubes in vibrations moved and thereby cleaned.

    Die in Figur 5 darstellte Variante eines Klopfrohrs (8b) zeigt die im Bereich der Windungen (18) abgeknickte Führung des Klopfrohrs (8b). Durch diese Form der Windungen wird erreicht, daß das Anstoßen eines einzelnen Stößels zu Vibrationen im Klopfrohr führt, die nicht auch auf andere Bereiche des Klopfrohrs übertragen werden. Im übrigen haben die Bezugsziffern in Figur 5 die bereits zuvor erläuterte Bedeutung.The variant of a tapping tube (8b) shown in FIG. 5 shows the guide of the kinked in the area of the turns (18) Tapping tube (8b). This shape of the turns ensures that pushing a single plunger to vibrate in the Knock pipe leads that does not affect other areas of the Knock tube are transmitted. Otherwise they have Reference numerals in Figure 5 that previously explained Importance.

    Die erfindungsgemäße Klopfung der Wärmeaustauschrohre kann sowohl für horizontal als auch für vertikal durchströmte Kanäle oder Kessel verwendet werden.The tapping of the heat exchange tubes according to the invention can for both horizontal and vertical flow Channels or boilers can be used.

    Claims (4)

    1. A heat exchanger having numerous heat-exchange tubes (2) extending approximately parallel to each other through which a cooling fluid flows, which are arranged in a duct (1) through which hot gas flows, each heat-exchange tube having a plurality of windings (2a) and being in contact in the region between the windings with a rapping tube (8), wherein jerky movements of the rapping tube cause oscillations in the heat-exchange tubes, characterised in that each heat-exchange tube (2) is fastened in stationary manner in the region of all its windings (2a).
    2. A heat exchanger according to Claim 1, characterised in that the rapping tube (8) extends approximately vertically to the heat-exchange tubes in the region of contact with the heat-exchange tubes (2).
    3. A heat-exchanger according to Claim 1 or 2, characterised in that the rapping tube (8) is connected to the heat-exchange tubes (2).
    4. A heat-exchanger according to Claim 1 or one of the following claims, characterised in that the rapping tube (8) is wound a plurality of times and is elastically movable.
    EP97109258A 1996-07-27 1997-06-07 Heat exchanger Expired - Lifetime EP0821212B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19630482 1996-07-27
    DE19630482A DE19630482A1 (en) 1996-07-27 1996-07-27 Heat exchanger

    Publications (3)

    Publication Number Publication Date
    EP0821212A2 EP0821212A2 (en) 1998-01-28
    EP0821212A3 EP0821212A3 (en) 1998-09-16
    EP0821212B1 true EP0821212B1 (en) 2001-12-05

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    ID=7801119

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97109258A Expired - Lifetime EP0821212B1 (en) 1996-07-27 1997-06-07 Heat exchanger

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    EP (1) EP0821212B1 (en)
    DE (2) DE19630482A1 (en)

    Families Citing this family (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10131524B4 (en) * 2001-07-02 2004-04-15 Vattenfall Europe Generation Ag & Co. Kg Heating surface of a steam generator with numerous heating surface tubes through which a cooling medium flows and which run approximately parallel to one another
    CN103123243A (en) * 2011-11-21 2013-05-29 张建东 Tubular heat exchanger structure provided with vibrating heat-conducting pieces
    JP6177523B2 (en) * 2012-12-27 2017-08-09 川崎重工業株式会社 Waste heat boiler and heat exchanger with dust removal device
    CN104976919B (en) * 2015-07-12 2017-03-15 东北电力大学 Dry and wet air cooled condenser cleaning system arranged side by side and its cleaning frequency determine method
    CN111256098B (en) * 2018-11-30 2022-05-31 川崎重工业株式会社 Heat conduction pipe block, waste heat recovery boiler and construction method of waste heat recovery boiler

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US2204144A (en) * 1935-10-31 1940-06-11 Babcock & Wilcox Co Fluid heat exchange apparatus
    CA1012960A (en) * 1975-09-25 1977-06-28 Dominion Bridge Company Mechanical cleaning device for boilers with gas flow containing sticky dust
    DE2809735A1 (en) * 1978-03-03 1979-09-06 Vorkauf Heinrich Tubular heat exchanger - with meandering tube panels supported by tubes vibrated by impacts
    DE4121815C2 (en) * 1991-07-02 1993-11-11 Schmidt Sche Heissdampf Heat exchanger

    Also Published As

    Publication number Publication date
    EP0821212A3 (en) 1998-09-16
    EP0821212A2 (en) 1998-01-28
    DE59705630D1 (en) 2002-01-17
    DE19630482A1 (en) 1998-01-29

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