EP0840053B1 - Insulation covering for heat-exchanger surfaces - Google Patents

Insulation covering for heat-exchanger surfaces Download PDF

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Publication number
EP0840053B1
EP0840053B1 EP97115785A EP97115785A EP0840053B1 EP 0840053 B1 EP0840053 B1 EP 0840053B1 EP 97115785 A EP97115785 A EP 97115785A EP 97115785 A EP97115785 A EP 97115785A EP 0840053 B1 EP0840053 B1 EP 0840053B1
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EP
European Patent Office
Prior art keywords
heat
fastening
expanded metal
insulating lining
insulating
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
EP97115785A
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German (de)
French (fr)
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EP0840053A1 (en
Inventor
Wolfgang Dipl.-Ing. Deeke
Michael Dipl.-Ing. Havlik
Jürgen Dr.-Ing. Heering
Klaus Dipl.-Ing. Köhnen
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Karrena GmbH
Original Assignee
Karrena GmbH
MG Technologies AG
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Publication of EP0840053A1 publication Critical patent/EP0840053A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/107—Protection of water tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S122/00—Liquid heaters and vaporizers
    • Y10S122/13—Tubes - composition and protection

Definitions

  • the invention relates to a heat-insulating lining to reduce the heat flow or to protect against Overtemperature on the cooling surfaces of a medium or High pressure heat exchanger.
  • This heat-insulating lining of a tube-web-tube wall is used in particular in radiation coolers Pipe cage and or used on bulkhead surfaces.
  • Avoiding heat exchangers To a too low gas-side outlet temperature from the Avoiding heat exchangers becomes either the heat transfer surface by interrupting the water supply to individual pipes, by cutting out pipes and or by applying refractory materials and or Pounding mass deactivated.
  • ramming compounds require welding of pins and or or Anchoring to the pipe-bridge-pipe connection, in particular also on pressurized parts (pipes) in order to To ensure wearing and adhering of the ramming masses.
  • the invention is therefore based on the object To create stripes that are targeted Reduction of heat exchange leads, relatively is easy to attach, a later simple one Adjustability by partial distance or more Attachment allowed, no welding on pressure loads Sharing requires no large additional weight load into the component and its surface normal temperature air cures so that a costly drying with a drying burner is not is required.
  • this increases the Outlet temperature of the gas from the heat exchanger achieved.
  • an easy to install material with low thermal conductivity, required temperature resistance, low weight, no need for drying with drying burner, sufficient Abrasion resistance, so on the outside of the tube-web-tube connection is applied that he is the surface of a selected area completely covered.
  • the space between the mat and pipe-web-pipe connection in the web area is the same or another substance with low thermal conductivity, for example a ceramic fiber material, filled out.
  • the ceramic damp felt in mat form is through Pins with mounting washers on the tube-bar-tube connection of the heat exchanger attached.
  • the pencils for example made of corrosion-resistant stainless steel, are only on the webs of the pipe-web-pipe connection welded on. As a result, there are no pressure loads Components (pipes) affected.
  • the arrangement of the mounting pins done so that the pins on the top edge and the bottom edge of the mat segment and depending on Sit within the mat segment.
  • the Fixing pins and the fixing washers each with a thread, so one to ensure a secure hold of the wet felt mats.
  • a coolant distributor (distribution pipe) of the heat exchanger as the basis for the Narrow side of the bottom mat can be used.
  • Top edge and or bottom edge and or front edge (s) of the total mat area are with angled expanded metal strips against fraying and loss of material secured. These angled strips of expanded metal are put on by the pins with mounting washers the webs of the tube-web-tube connection attached.
  • the gas-side surfaces of the angled expanded metal strips are also made with ff material good corrosion resistance.
  • the bill can be taken out or additional attachment of partial mats are worn, with the angled expanded metal strips be laid accordingly.
  • That applied to the gas side surface ff material with low thermal conductivity becomes like this selected that its drying at normal temperature Air is already sufficient to harden.
  • the invention is based on schematic Exemplary embodiments explained in more detail.
  • Fig. 1 shows a section A-A through the cooling surface (2) of the heat exchanger, which consists of a tube (10) web (6) tube (10) wall consists. Corrosion resistant Fastening pins (4) are in a weld (14) each on the webs (6) of the cooling surface (2) appropriate.
  • the mat segments (1) is also an expanded metal (8) attached by an ff material (9) with good Corrosion resistance is protected.
  • Fig. 2 shows a section B-B through one of the tubes (10) the cooling surface attached to a coolant manifold pipe (7) or collector is welded on. On the web (6) the mounting pins (4) for the Segments of the ceramic wet felt mat (1) Welds (14) attached. In the field of pipes (10) a ceramic material (3) is applied, the segments of the damp felt mat (1) being dense or flush on the tube (10) and the ceramic material (3).
  • the segments of the damp felt mat (1) are covered by the Fastening pins (4) pressed and using fastening washers (5) pressed.
  • the top of the Segments of the damp felt mat (1) with a angled expanded metal strip (13) held so the segments of the moisture mat (1) not only in Area of the fastening pins (4) on the tube (10), but also lie close to the edge zones (12), do not fray or that there is a loss of material can.
  • Fig. 3 is the view "C" of the heat insulating lining the cooling surface (2).
  • the segments of the wet felt mat (1) are in through the mounting washers at regular intervals (5) held on the mounting pins (4) be plugged on.

Description

Die Erfindung betrifft eine wärmedämmende Auskleidung zur Erniedrigung des Wärmestroms bzw. zum Schutz vor Übertemperatur an den Kühlflächen eines Mittel- oder Hochdruck-Wärmeaustauschers.The invention relates to a heat-insulating lining to reduce the heat flow or to protect against Overtemperature on the cooling surfaces of a medium or High pressure heat exchanger.

Diese wärmedämmende Auskleidung einer Rohr-Steg-Rohrwand wird insbesondere in Strahlungskühlern am Rohrkäfig und oder an Schottenflächen verwendet.This heat-insulating lining of a tube-web-tube wall is used in particular in radiation coolers Pipe cage and or used on bulkhead surfaces.

Bei der Auslegung der Kühlfächen neu entwickelter Wärmetauscher, bei denen bezüglich Aufbau und Werkstoffe (z. B. Edelstahl) keine einschlägigen Erfahrungen hinsichtlich des sich einstellenden Verschmutzungsverhaltens vorliegen, wird eine an sich bekannte, wärmedämmende Auskleidung verwendet.Newly developed in the design of the cooling surfaces Heat exchangers with regard to structure and Materials (e.g. stainless steel) no relevant Experience with the emerging Pollution behavior is one in itself known, heat-insulating lining used.

Im laufenden Betrieb kann es sich herausstellen, daß die tatsächliche Verschmutzung der Heizflächen geringer ist als die theroretisch angenommene. Das führt zu einer besseren als erwarteten Kühlung und somit zu einer tieferen Gasaustrittstemperatur als vorher theoretisch berechnet.During operation it can turn out that the actual pollution of the heating surfaces is lower is accepted as the theoretical one. That leads to better than expected cooling and thus too a lower gas outlet temperature than before theoretically calculated.

Um eine zu tiefe gasseitige Austrittstemperatur aus dem Wärmeaustauscher zu vermeiden, wird entweder die Wärmeübertragungsfläche durch Unterbrechung der Wasserzufuhr zu einzelnen Rohren, durch Heraustrennen von Rohren und oder durch Aufbringen von Feuerfestmaterialien und oder Stampfmasse desaktiviert.To a too low gas-side outlet temperature from the Avoiding heat exchangers becomes either the heat transfer surface by interrupting the water supply to individual pipes, by cutting out pipes and or by applying refractory materials and or Pounding mass deactivated.

Die Unterbindung der Wasserzufuhr oder die Entfernung einzelner Rohre stellt in der Regel eine nichtrücknehmbare Bauteilveränderung dar. Das Aufbringen von Stampfmassen erfordert das Aufschweißen von Stiften und oder Ankern auf die Rohr-Steg-Rohr-Verbindung, insbesondere auch an druckbeaufschlagten Teilen (Rohren), um das Tragen und Anhaften der Stampfmassen zu gewährleisten.Disabling water removal or removal individual pipes usually represents an unrecoverable Component change represents. The application of ramming compounds requires welding of pins and or or Anchoring to the pipe-bridge-pipe connection, in particular also on pressurized parts (pipes) in order to To ensure wearing and adhering of the ramming masses.

Da jede nachträglich aufgebrachte Schweißnaht Wärmespannungen hervorruft und unter Umständen der Ausgangspunkt für Risse sein kann, ist die Verschweißung von Stiften auf druckgehende Rohre auf jeden Fall nachteilig. Desweiteren kommen durch die Stampfmassen unter Umständen erhebliche Zusatzgewichte in das Bauteil hinein, die häufig schwer abzufangen sind.Since each weld seam subsequently applied, thermal stresses evokes and possibly the starting point can be for cracks is the weld from pins to pressure pipes disadvantageous. Furthermore come through the ramming masses possibly considerable additional weights in the Components that are often difficult to intercept.

Weiterhin ist es erforderlich, die Stampfmasse gemäß einer vom Hersteller vorgegebenen Zeit-Temperatur-Kurve zu trocknen, um ihre Einsatzfähigkeit zu erreichen. Die Trocknungsprozedur kann mit beträchtlichem Aufwand verbunden sein.Furthermore, it is necessary to according to the ramming mass a time-temperature curve specified by the manufacturer to dry in order to achieve their operational capability. The drying procedure can be done with considerable effort be connected.

Bei Abkleidung von zu viel Wärmeaustauscherfläche durch Stampfmasse ist die Demontage dieser Wärmedämmung nur mit erheblichem Aufwand möglich, da die Stifte und oder Anker ebenfalls nach Abriß der Stampfmasse abgeschliffen werden müssen, um - bedingt durch lokale Metallüberhitzung - Zonen mit Versagenswahrscheinlichkeit zu vermeiden.If too much heat exchanger surface is covered by Ramming mass is the dismantling of this thermal insulation only possible with considerable effort since the pins and or Anchor also ground after tamping have to be - due to local Metal overheating - zones where failure is likely to avoid.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine Abkleidung zu schaffen, die zu einer gezielten Verringerung des Wärmeaustausches führt, relativ einfach anbringbar ist, eine spätere einfache Justierbarkeit durch Teilentfernung oder weiterer Anbringung erlaubt, keine Schweißung an druckbelasteten Teilen erfordert, keine große Zusatzgewichtsbelastung in das Bauteil hineinbringt und deren Oberfläche bei normaltemperierter Luft aushärtet, so daß eine aufwendige Trocknung mit Trocknungsbrenner nicht erforderlich ist. The invention is therefore based on the object To create stripes that are targeted Reduction of heat exchange leads, relatively is easy to attach, a later simple one Adjustability by partial distance or more Attachment allowed, no welding on pressure loads Sharing requires no large additional weight load into the component and its surface normal temperature air cures so that a costly drying with a drying burner is not is required.

Die Lösung der Aufgabe erfolgt in der Weise, wie es in dem Patentanspruch 1 angegeben ist, die Unteransprüche stellen eine vorteilhafte Ausgestaltung der Erfindung dar.The task is solved in the way it is in the claim 1 is specified, the subclaims represent an advantageous embodiment of the invention represents.

Erfindungsgemäß wird hierdurch eine Anhebung der Austrittstemperatur des Gases aus dem Wärmetauscher erzielt.According to the invention, this increases the Outlet temperature of the gas from the heat exchanger achieved.

Selbstverständlich kann die Erfindung über den zuvor beschriebenen Anwendungsfall hinausgehend immer auch zum Schutz wärmeempfindlicher Bereiche unter den vorgenannten Rand- und Rahmenbedingungen eingesetzt werden.Of course, the invention can over the above always go beyond the described application to protect heat-sensitive areas among the aforementioned Boundary and framework conditions used become.

Durch die Erfindung ist ein einfach zu installierender Werkstoff mit geringer Wärmeleitfähigkeit, erforderlicher Temperaturbeständigkeit, geringem Gewicht, ohne Trocknungsnotwendigkeit mit Trocknungsbrenner, ausreichender Abriebfestigkeit, so auf die Außenseite der Rohr-Steg-Rohr-Verbindung aufgebracht wird, daß er die Oberfläche eines gewählten Bereiches völlig bedeckt. Der Zwischenraum zwischen Matte und Rohr-Steg-Rohr-Verbindung im Stegbereich wird durch den gleichen oder einen anderen Stoff mit ebenfalls geringer Wärmeleitfähigkeit, zum Beispiel ein Keramikfaser-Werkstoff, ausgefüllt.Through the invention an easy to install material with low thermal conductivity, required temperature resistance, low weight, no need for drying with drying burner, sufficient Abrasion resistance, so on the outside of the tube-web-tube connection is applied that he is the surface of a selected area completely covered. The space between the mat and pipe-web-pipe connection in the web area is the same or another substance with low thermal conductivity, for example a ceramic fiber material, filled out.

Der keramische Feuchtfilz in Mattenform wird durch Stifte mit Befestigungsscheiben an der Rohr-Steg-Rohr-Verbindung des Wärmeaustauschers befestigt. Die Stifte, zum Beispiel aus korrosionsbeständigem Edelstahl, werden nur an den Stegen der Rohr-Steg-Rohr-Verbindung angeschweißt. Hierdurch werden keine druckbelasteten Bauteile (Rohre) beeinflußt. Die Anordnung der Befestigungsstifte erfolgt so, daß die Stifte an der Oberkante und der Unterkante des Mattensegments und je nach Bedarf innerhalb des Mattensegments sitzen. Die Befestigungsstifte und die Befestigungsscheiben werden jeweils mit einem Gewinde ausgestattet, um so einen sicheren Halt der Feuchtfilzmatten zu gewährleisten.The ceramic damp felt in mat form is through Pins with mounting washers on the tube-bar-tube connection of the heat exchanger attached. The pencils, for example made of corrosion-resistant stainless steel, are only on the webs of the pipe-web-pipe connection welded on. As a result, there are no pressure loads Components (pipes) affected. The arrangement of the mounting pins done so that the pins on the top edge and the bottom edge of the mat segment and depending on Sit within the mat segment. The Fixing pins and the fixing washers each with a thread, so one to ensure a secure hold of the wet felt mats.

Zusätzlich kann ein Kühlmittelverteiler (Verteilungsrohr) des Wärmeaustauschers als Basis für die Schmalseite der untersten Matte benutzt werden.In addition, a coolant distributor (distribution pipe) of the heat exchanger as the basis for the Narrow side of the bottom mat can be used.

Zur Erzielung einer besseren Befestigung und zur Erhöhung der Standzeit werden zusätzliche Streckmetallstreifen verwendet, und zwar im Bereich der Mattenstöße der keramischen Feuchtfilzmatte und nach Befestigungserfordernis des zu verkleidenden Bauteiles. Das Streckmetall wird zwischen gasseitiger Mattenoberfläche und Befestigungsscheiben angebracht.To achieve a better attachment and Additional expanded metal strips will increase the service life used, in the area of the mat joints the ceramic wet felt mat and according to fastening requirements of the component to be clad. The expanded metal is between the gas side mat surface and Fastening washers attached.

Auf den Streckmetallstreifen nebst zugehörigen Befestigungsscheiben und Stiftköpfen wird ein ff-Material mit hoher Temperaturbeständigkeit und Gasundurchlässigkeit, zum Beispiel ff-Kitt, aufgebracht, um vorgenannte Teile vor der Gasatmosphäre und Korrosion zu schützen.On the expanded metal strip along with the associated one Fastening washers and pin heads become one ff material with high temperature resistance and Gas impermeability, for example ff-putty, applied, to the aforementioned parts in front of the gas atmosphere and Protect corrosion.

Oberkante und oder Unterkante und oder Stirnkante(n) der Gesamtmattenfläche werden mit abgewinkelten Streckmetallstreifen gegen Ausfransen und Materialverlust gesichert. Diese abgewinkelten Streckmetallstreifen werden durch die Stifte mit Befestigungsscheiben auf den Stegen der Rohr-Steg-Rohr-Verbindung befestigt.Top edge and or bottom edge and or front edge (s) of the total mat area are with angled expanded metal strips against fraying and loss of material secured. These angled strips of expanded metal are put on by the pins with mounting washers the webs of the tube-web-tube connection attached.

Die gasseitigen Oberflächen der abgewinkelten Streckmetallstreifen werden ebenfalls durch ff-Material mit guter Korrosionsbeständigkeit geschützt. The gas-side surfaces of the angled expanded metal strips are also made with ff material good corrosion resistance.

Falls sich durch veränderndes Verschmutzungsverhalten über die Reisezeit der Ausrüstung Handlungsbedarf bezüglich der Veränderung der Größe der wärmedämmenden Auskleidung ergibt, kann dem Rechnung durch Herausnahme oder Zusatzanbringung von Teilmatten getragen werden, wobei die abgewinkelten Streckmetallstreifen entsprechend verlegt werden.If due to changing pollution behavior Action needs to be taken over the travel time of the equipment regarding the change in size of the thermal insulation Lining results, the bill can be taken out or additional attachment of partial mats are worn, with the angled expanded metal strips be laid accordingly.

Das auf die gasseitige Oberfläche aufgebrachte ff-Material mit geringer Wärmeleitfähigkeit wird so ausgewählt, daß sein Trocknen an normaltemperierter Luft bereits ausreicht, um auszuhärten.That applied to the gas side surface ff material with low thermal conductivity becomes like this selected that its drying at normal temperature Air is already sufficient to harden.

Die Erfindung wird anhand von schematischen Ausführungsbeispielen näher erläutert.The invention is based on schematic Exemplary embodiments explained in more detail.

Es zeigen:

Fig. 1
einen Schnitt A-A durch die Kühlfläche,
Fig. 2
einen Schnitt B-B durch ein Einzelrohr,
Fig. 3
eine Ansicht "C" der Wärmeauskleidung der Kühlfläche.
Show it:
Fig. 1
a section AA through the cooling surface,
Fig. 2
a section BB through a single tube,
Fig. 3
a view "C" of the heat liner of the cooling surface.

Fig. 1 zeigt einen Schnitt A-A durch die Kühlfläche (2) des Wärmetauschers, die aus einer Rohr-(10)-Steg(6)-Rohr(10)-Wand besteht. Korrosionsbeständige Befestigungsstifte (4) sind in einer Schweißstelle (14) jeweils auf den Stegen (6) der Kühlfläche (2) angebracht.Fig. 1 shows a section A-A through the cooling surface (2) of the heat exchanger, which consists of a tube (10) web (6) tube (10) wall consists. Corrosion resistant Fastening pins (4) are in a weld (14) each on the webs (6) of the cooling surface (2) appropriate.

An beiden Seiten der Stege (6) ist bis in Höhe der Rohraußenseite der Rohre der Rohrwand (10) ein keramischer Faserwerkstoff (3) als wärmedämmendes Material aufgebracht, darüber sind beidseitig Segmente einer keramischen Feuchtfilzmatte (1) aufgelegt, die von Befestigungsstiften (4) und Befestigungsscheiben (5) gehalten werden.On both sides of the webs (6) is up to the level of Pipe outside of the pipes of the pipe wall (10) ceramic fiber material (3) as a thermal insulation Material applied, above it are segments on both sides a ceramic wet felt mat (1) placed on the of fastening pins (4) and fastening washers (5) are held.

An einer oder beiden Randzonen und an den Stoßstellen der Mattensegmente (1) ist zusätzlich ein Streckmetall (8) angebracht, das durch ein ff-Material (9) mit guter Korrosionsbeständigkeit geschützt wird.At one or both edge zones and at the joints the mat segments (1) is also an expanded metal (8) attached by an ff material (9) with good Corrosion resistance is protected.

Fig. 2 zeigt einen Schnitt B-B durch eines der Rohre (10) der Kühlfläche, das an einem KühlmittelverteilerRohr (7) bzw. Sammler angeschweißt ist. An dem Steg (6) werden in Abständen die Befestigungsstifte (4) für die Segmente der keramischen Feuchtfilzmatte (1) an Schweißstellen (14) befestigt. Im Bereich der Rohre (10) wird ein keramischer Werkstoff (3) aufgebracht, wobei die Segmente der Feuchtfilzmatte (1) dicht bzw. bündig auf dem Rohr (10) und dem keramischen Werkstoff (3) anliegen.Fig. 2 shows a section B-B through one of the tubes (10) the cooling surface attached to a coolant manifold pipe (7) or collector is welded on. On the web (6) the mounting pins (4) for the Segments of the ceramic wet felt mat (1) Welds (14) attached. In the field of pipes (10) a ceramic material (3) is applied, the segments of the damp felt mat (1) being dense or flush on the tube (10) and the ceramic material (3).

Die Segmente der Feuchtfilzmatte (1) werden durch die Befestigungsstifte (4) gedrückt und mittels Befestigungsscheiben (5) angepreßt. Das obere Ende der Segmente der Feuchtfilzmatte (1) wird mit einem abgewinkelten Streckmetallstreifen (13) gehalten, damit die Segmente der Feuchtigkeitsmatte (1) nicht nur im Bereich der Befestigungsstifte (4) am Rohr (10), sondern auch an den Randzonen (12) dicht anliegen, nicht ausfransen oder daß ein Materialverlust auftreten kann.The segments of the damp felt mat (1) are covered by the Fastening pins (4) pressed and using fastening washers (5) pressed. The top of the Segments of the damp felt mat (1) with a angled expanded metal strip (13) held so the segments of the moisture mat (1) not only in Area of the fastening pins (4) on the tube (10), but also lie close to the edge zones (12), do not fray or that there is a loss of material can.

In Fig. 3 ist die Ansicht "C" der wärmedämmenden Auskleidung der Kühlfläche (2) dargestellt. In Fig. 3 is the view "C" of the heat insulating lining the cooling surface (2).

Die Segmente der Feuchtfilzmatte (1) werden in regelmäßigen Abständen durch die Befestigungsscheiben (5) gehalten, die auf die Befestigungsstifte (4) aufgesteckt werden.The segments of the wet felt mat (1) are in through the mounting washers at regular intervals (5) held on the mounting pins (4) be plugged on.

Bei der hier dargestellten Ausführung werden Streckmetallstreifen (8) verwendet, die zusätzlich mit einem ff-Material (Kitt) (9) ausgekleidet werden.In the version shown here, expanded metal strips (8) used with an additional ff material (putty) (9) must be lined.

Bei diesem Ausführungsbeispiel ist in jeder zweiten Stiftreihe (11) und in den Randzonen (12) der Kühlfläche (2) bzw. der keramischen Segmente der Feuchtfilzmatte (1) ein Streckmetall (8, 13) angebracht. In this embodiment, every second Row of pins (11) and in the edge zones (12) of Cooling surface (2) or the ceramic segments of the Wet felt mat (1) an expanded metal (8, 13) appropriate.

Bezugsziffernliste:List of reference numbers:

11
keramisches Feuchtfilzmatten-SegmentCeramic wet felt mat segment
22nd
Kühlfläche, geschweißte Rohrwand (Rohr-Steg-Rohr)Cooling surface, welded tube wall (tube-web-tube)
33rd
Keramikfaser-Werkstoff/Wärmedämmendes MaterialCeramic fiber material / thermal insulation material
44th
BefestigungsstifteMounting pins
55
BefestigungsscheibeMounting washer
66
Stege der RohrwandRidges of the pipe wall
77
KühlmittelverteilerrohrCoolant manifold
88th
StreckmetallExpanded metal
99
ff-Material (ff-Kitt)ff material (ff putty)
1010th
Rohre der RohrwandPipes of the pipe wall
1111
StiftreiheRow of pins
1212th
RandzonenMarginal zones
1313
abgekantete Streckmetallstreifenfolded expanded metal strips
1414
SchweißstelleWeld

Claims (7)

  1. A heat-insulating lining for reducing the heat flow or for protection against an excess temperature at the cooling surfaces of a medium- or high-pressure heat exchanger,
    characterized in
    that ceramic moleskin mat segments (1) are fastened to the cooling surface (2), which consists of a tube(10)-web(6)-tube wall, by fastening pins (4) and fastening washers (5),
    that the fastening pins (4) are only welded to the webs of the tube wall (6) of the cooling surface (2),
    that by incorporating heat-insulating material (3), the contour of the tube-web-tube wall (6, 10) of the cooling surface (2) of the heat exchanger wall has an aligned surface,
    that above the pin rows (11) and in the edge zones (12) of the ceramic moleskin mat segments (1) an expanded metal (8) is fastened.
  2. The heat-insulating lining as claimed in claim 1, characterized in
    that the ceramic moleskin mat segments (1) are applied onto the tubes of the tube wall (10) of the cooling surface (2) and of the heat-insulating material (3).
  3. The heat-insulating lining as claimed in claim 1 and 2, characterized in
    that in every second pin row (11) and in the edge zones (12) of the heat-insulating lining (1, 3) expanded metal strips (8, 13) are mounted, which are held by fastening pins (4) with fastening washers (5).
  4. The heat-insulating lining as claimed in claim 1 or 5, characterized in
    that the expanded metal (8), the fastening washers (5), and the protruding part of the fastening pins (4) are covered by a corrosion-resistant refractory material (9).
  5. The heat-insulating lining as claimed in claim 1 or 3, characterized in
    that in the edge zones (12) folded expanded metal strips (13) are mounted, which are held by fastening pins (4) with fastening washers (5).
  6. The heat-insulating lining as claimed in claim 1 or 3, characterized in
    that the entire surface of the ceramic moleskin mat segments (1) is covered by expanded metal (8), which is held by fastening pins (4) with fastening washers (5).
  7. The heat-insulating lining as claimed in claim 6, characterized in
    that within the expanded metal lining (8) any heat-insulating and temperature-resistant material in the form of mats (1) or bulk wool is used.
EP97115785A 1996-11-04 1997-09-11 Insulation covering for heat-exchanger surfaces Expired - Lifetime EP0840053B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19645390 1996-11-04
DE19645390A DE19645390C2 (en) 1996-11-04 1996-11-04 Medium or high pressure heat exchanger with a heat-insulating cladding

Publications (2)

Publication Number Publication Date
EP0840053A1 EP0840053A1 (en) 1998-05-06
EP0840053B1 true EP0840053B1 (en) 2001-08-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97115785A Expired - Lifetime EP0840053B1 (en) 1996-11-04 1997-09-11 Insulation covering for heat-exchanger surfaces

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US (1) US5810075A (en)
EP (1) EP0840053B1 (en)
DE (2) DE19645390C2 (en)

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Also Published As

Publication number Publication date
DE19645390C2 (en) 2000-01-13
EP0840053A1 (en) 1998-05-06
US5810075A (en) 1998-09-22
DE59704180D1 (en) 2001-09-06
DE19645390A1 (en) 1998-05-07

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