DE19654736C2 - Sealing element for sealing the back of the tube plate and the tube ends against the medium in the jacket space (space around the tubes) in heat exchangers - Google Patents

Sealing element for sealing the back of the tube plate and the tube ends against the medium in the jacket space (space around the tubes) in heat exchangers

Info

Publication number
DE19654736C2
DE19654736C2 DE1996154736 DE19654736A DE19654736C2 DE 19654736 C2 DE19654736 C2 DE 19654736C2 DE 1996154736 DE1996154736 DE 1996154736 DE 19654736 A DE19654736 A DE 19654736A DE 19654736 C2 DE19654736 C2 DE 19654736C2
Authority
DE
Germany
Prior art keywords
sealing
tubes
tube
space
medium
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 - Fee Related
Application number
DE1996154736
Other languages
German (de)
Other versions
DE19654736A1 (en
Inventor
Hans Dieter Treptow
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1996154736 priority Critical patent/DE19654736C2/en
Publication of DE19654736A1 publication Critical patent/DE19654736A1/en
Application granted granted Critical
Publication of DE19654736C2 publication Critical patent/DE19654736C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7437—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc the tool being a perforating tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53465—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat said single flat elements being provided with holes facing the tube ends, e.g. for making heat-exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73715—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable heat-shrinkable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • F28F19/04—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of rubber; of plastics material; of varnish
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/187—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding at least one of the parts being non-metallic, e.g. heat-sealing plastic elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/18—Heat-exchangers or parts thereof

Description

Die hier vorgestellte Erfindung ist zum Einsatz im Wärmetauscherbau vorgesehen.The invention presented here is intended for use in heat exchanger construction.

Problemstellung:Problem:

In Rauchgasreinigungsanlagen werden sehr hohe Anforderungen an die Korrosions­ beständigkeit der Wärmetauscher gestellt. Besonders wenn sich Kondensation bilden kann, versucht man neuerdings auf die Verwendung von emaillierten oder mit Kunststoff überzogene Wärmetauscherrohre auszuweichen. Anderenfalls müßten sehr kostenintensive hochlegierte Werkstoffe eingesetzt werden.In flue gas cleaning systems, very high demands are placed on corrosion resistance of the heat exchanger. Especially if condensation can form, attempts have recently been made to use enameled or plastic-coated Dodge heat exchanger tubes. Otherwise, very expensive high alloys would have to be Materials are used.

Da die Korrosionsschutzschicht nicht bis zur Einschweißstelle in der Rohrplatte durchgeführt werden kann, kommt irgendwann das Grundmaterial mit dem mantelseitigen Medium in Berührung.Because the corrosion protection layer is not carried out up to the weld point in the pipe plate the basic material with the medium on the shell side comes in at some point Contact.

Frühere Lösungsversuche:Previous attempts at solution:

Es ist bekannt (EP 0 155 498 A2 oder EP 0 679 853 A1), eine Abdichtung mit Aushalsungen zu versehen.It is known (EP 0 155 498 A2 or EP 0 679 853 A1), a seal with neckings to provide.

Des weiteren wurde in der Vergangenheit versucht, die Abdichtung durch eine ausgehalste PFA-Folie und einen Schrumpfschlauch herzustellen. Dieser Schrumpfschlauch wurde vor dem Einbau des Rohres in den Wärmetauscher aufgeschrumpft. Die Verbindung der beiden Dichtelemente wurde durch Erhitzen und Verschweißen der Stoßstelle während der Montage des Wärmetauschers hergestellt. Zur Ausführung dieser Schweißung war eine hohe manuelle Fertigkeit und Sorgfalt erforderlich. Dabei bestand trotzdem die Gefahr einer Fehlschweißung, welche nicht mehr korrigiert werden konnte. Bei einer nicht entdeckten Fehlstelle war der kompl. Wärmetauscher in Gefahr.Furthermore, attempts have been made in the past to seal through a to produce PFA film and a shrink tube. This shrink tube was shrunk on before installing the pipe in the heat exchanger. The connection the two sealing elements were removed by heating and welding the joint during the Assembly of the heat exchanger manufactured. To carry out this weld was a high one manual skill and care required. There was still the risk of one Miss welding, which could no longer be corrected. With an undiscovered one The missing part was the compl. Heat exchanger in danger.

Der Erfindung liegt die Aufgabe zugrunde, die Abdichtung einer Rohrplattenrückseite und der Rohrenden gegen aggressive Stoffe sicher zu stellen.The object of the invention is to achieve this underlying the sealing of a Pipe plate back and the pipe ends to ensure against aggressive substances.

Die Lösung dieser Aufgabe ist im Patentanspruch 1 angegeben.The solution to this problem is in Claim 1 specified.

Verbesserung durch die Erfindung:Improvement through the invention:

Durch die Erfindung wird die Abdichtung der Rohrplattenrückseite und der Rohrenden gegen aggressive Stoffe sicher hergestellt. Das gilt besonders für den Einsatz an senkrecht stehenden oder geneigten Rohren, an denen aggressive Medien (Kondensate) herunterfließen können. Das Abdichtungselement besteht aus Kunststoff (PFA, MFA) in einer Kombination aus einer normalen Kunststoffplatte und Schrumpfschläuchen.The invention seals the back of the tube plate and the tube ends against aggressive substances manufactured safely. This is especially true for use on vertical or inclined pipes on which aggressive media (condensates) can flow down. The sealing element is made of plastic (PFA, MFA) in a combination of one normal plastic plate and heat shrink tubing.

In der folgenden Zeichnung ist die Herstellung des Abdichtelements gezeigt.In the following drawing that is Manufacture of the sealing element shown.

Die Herstellung des Abdichtelements erfolgt unabhängig von der Montage des eigentlichen Wärmetauschers.The sealing element is manufactured independently of the assembly of the actual one Heat exchanger.

Dadurch ist die Möglichkeit der zerstörungsfreien Prüfung, und auch einer evt. erforderlichen Reparatur des Bauteils vor dem Einbau in den Wärmetauscher gegeben.This makes it possible to carry out a non-destructive test and possibly also a necessary one The component was repaired before installation in the heat exchanger.

Die Verbindung der Bauteile (1) und (2) erfolgt in einem Arbeitsgang, der eine Kombination aus dem üblichen Aushaken und der Verschweißung darstellt.The components ( 1 ) and ( 2 ) are connected in one operation, which is a combination of the usual unhooking and welding.

Ein weiterer Vorteil liegt in der Ersparnis von Zeit und Handarbeit bei der Herstellung der relevanten Verbindung der Bauteile (1) und (2) sowie beim Einbau der vorgefertigten Abdichtungseinheit.Another advantage is the saving of time and manual labor in the production of the relevant connection of components ( 1 ) and ( 2 ) and in the installation of the prefabricated sealing unit.

Bei der weiteren Verarbeitung kann die Schrumpfung entweder an jedem Rohr einzeln, oder durch Erwärmung des gesamten Bauteils in einem Arbeitsgang erfolgen. Zur Abdichtung der einzelnen WT-Rohre (3) mit den Schrumpfschläuchen können Dichtelemente (z. B. O-Ringe) verwendet werden. Alternativ können die Schrumpfschläuche - durch Erhitzung der WT-Rohre von innen - soweit erhitzt werden, daß sie auf die Oberfläche der WT-Rohre (z. B. auf die Emailleschicht) aufgeschmolzen werden.During further processing, the shrinkage can either be carried out individually on each tube or by heating the entire component in one operation. Sealing elements (e.g. O-rings) can be used to seal the individual HE pipes ( 3 ) with the shrink sleeves. Alternatively, the heat-shrinkable tubes can be heated by heating the WT tubes from the inside until they are melted onto the surface of the WT tubes (e.g. on the enamel layer).

Claims (1)

Vorgefertigtes Element zur Abdichtung der Rohrplattenrückseite (4) und der Rohrenden (3) eines Röhrenwärmetauschers, das aus einer mit Bohrungen und Aushalsungen versehenen Kunststoffplatte (1) besteht, die an den Aushalsungen mit senkrecht zur Kunststoffplatte (1) angeordneten Schrumpfschläuchen (2) verschweißt ist.A prefabricated element for sealing the tube plate rear side (4) and the pipe ends (3) is a tubular heat exchanger consisting of an provided with holes and necks plastic plate (1) which are welded to the necked-out with arranged perpendicular to the plastic plate (1) shrink tubing (2) .
DE1996154736 1996-12-30 1996-12-30 Sealing element for sealing the back of the tube plate and the tube ends against the medium in the jacket space (space around the tubes) in heat exchangers Expired - Fee Related DE19654736C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996154736 DE19654736C2 (en) 1996-12-30 1996-12-30 Sealing element for sealing the back of the tube plate and the tube ends against the medium in the jacket space (space around the tubes) in heat exchangers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996154736 DE19654736C2 (en) 1996-12-30 1996-12-30 Sealing element for sealing the back of the tube plate and the tube ends against the medium in the jacket space (space around the tubes) in heat exchangers

Publications (2)

Publication Number Publication Date
DE19654736A1 DE19654736A1 (en) 1997-06-19
DE19654736C2 true DE19654736C2 (en) 1999-08-05

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Application Number Title Priority Date Filing Date
DE1996154736 Expired - Fee Related DE19654736C2 (en) 1996-12-30 1996-12-30 Sealing element for sealing the back of the tube plate and the tube ends against the medium in the jacket space (space around the tubes) in heat exchangers

Country Status (1)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10147192A1 (en) * 2001-09-25 2003-04-17 Modine Mfg Co Heat exchanger with a finned flat tube block and manufacturing process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155498B1 (en) * 1981-04-09 1990-01-10 Heat Exchanger Industries, Inc. Method of fabricating a heat exchanger and apparatus produced thereby
EP0679853A1 (en) * 1994-04-22 1995-11-02 Dipl.-Ing. Ernst Kreiselmaier Wasser- und Metall-Chemie KG Coating for end plates and heat exchanger tubes for cooling medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155498B1 (en) * 1981-04-09 1990-01-10 Heat Exchanger Industries, Inc. Method of fabricating a heat exchanger and apparatus produced thereby
EP0679853A1 (en) * 1994-04-22 1995-11-02 Dipl.-Ing. Ernst Kreiselmaier Wasser- und Metall-Chemie KG Coating for end plates and heat exchanger tubes for cooling medium

Also Published As

Publication number Publication date
DE19654736A1 (en) 1997-06-19

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Ipc: F28F 9/02

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