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NL8300692A - METHOD FOR ATTACHING A CRIMPING SOCKET ON THE ENDS OF THE INSULATING COAT OF A THERMALLY INSULATED PIPE. - Google Patents

METHOD FOR ATTACHING A CRIMPING SOCKET ON THE ENDS OF THE INSULATING COAT OF A THERMALLY INSULATED PIPE. Download PDF

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Publication number
NL8300692A
NL8300692A NL8300692A NL8300692A NL8300692A NL 8300692 A NL8300692 A NL 8300692A NL 8300692 A NL8300692 A NL 8300692A NL 8300692 A NL8300692 A NL 8300692A NL 8300692 A NL8300692 A NL 8300692A
Authority
NL
Netherlands
Prior art keywords
sleeve
jacket
crimp
insulating
thermally insulated
Prior art date
Application number
NL8300692A
Other languages
Dutch (nl)
Original Assignee
Ania Bv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ania Bv filed Critical Ania Bv
Priority to NL8300692A priority Critical patent/NL8300692A/en
Priority to PCT/NL1984/000008 priority patent/WO1984003346A1/en
Priority to EP84901019A priority patent/EP0138864A1/en
Publication of NL8300692A publication Critical patent/NL8300692A/en

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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
    • B29C65/68—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 using auxiliary shrinkable elements
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding comprising several wires, e.g. in the form of several independent windings
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/362—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3632—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising at least a single wire, e.g. in the form of a winding comprising several wires, e.g. in the form of several independent windings
    • 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
    • B29C66/50—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
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53241—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being tubular and said substantially annular single elements being of finite length relative to the infinite length of said tubular articles
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/723—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 structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—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 structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/72—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 structure of the material of the parts to be joined
    • B29C66/727—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 structure of the material of the parts to be joined being porous, e.g. foam
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive joints
    • F16L47/03—Welded joints with an electrical resistance incorporated in the joint
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
    • F16L47/22—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics using shrink-down material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints
    • F16L59/20—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints for non-disconnectable 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
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B29C65/348—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic with a polymer coating
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B29C65/368—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic with a polymer coating
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B29L2023/225—Insulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing Of Terminals (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Method for interconnecting a shrink sleeve (12) upon the outer ends of the insulating jacket (4, 5) of a thermally insulated conduit (1, 2) by inserting an electric conductor (10) into the clearance (9) between the sleeve (12) and the jacket (4, 5) prior to activating the shrinkage of the sleeve (12) whilst after having performed the shrinkage a permanent melt connection is obtained between the sleeve and the jacket by electric heating with the use of said wires.

Description

p NO 31596 #w „ x * ~p NO 31596 #w „x * ~

Werkwijze voor het bevestigen van een krimpnof op de uiteinden van de isolatiemantel van een thermisch geïsoleerde leiding.Method for attaching a crimp sleeve to the ends of the insulating jacket of a thermally insulated pipe.

De uitvinding heeft betrekking qp een werkwijze voor het bevestigen 5 van een krimpnof op de uiteinden van de uit thermoplastische kunststof bestaande isolatiemantel van een thermisch geïsoleerde leiding/ welke krimpnof dient ter overbrugging van aan elkaar bevstigde einden van de bdnnenpijp en tussen deze pijp en de krirrtprrof alsmede tussen de op afstand van elkaar gelegen einden van de mantel isolerende materialen 10 bevat.The invention relates to a method for attaching a crimp sleeve to the ends of the thermoplastic plastic insulating jacket of a thermally insulated pipe / which crimp sleeve serves to bridge the attached ends of the pipe tube and between this pipe and the crimp sleeve. as well as insulating materials 10 between the spaced ends of the jacket.

Een dergelijke werkwijze is békend uit de praktijk. Met de krimpnof is het mogelijk de verbindingsplaats tussen twee aan elkaar bevestigde pijpeinden en het daaromheen aan te brengen isolatiemateriaal op onberispelijke wijze ten opzichte van de cmgeving af te sluiten. De 15 krimpnof kan met grote speling op ëën einde van een isolatiemantel worden geplaatst voordat de verbindingslas wordt gemaakt/ kan vervolgens ever de op afstand van elkaar gelegen einden van de isolatiemantels van de met elkaar verbonden pijpen worden geplaatst en daarna tot krimpen worden gebracht/ hetzij met een brander of hete luchttoestel danwel met 20 een eromheen te plaatsen uit twee helften bestaand oventje. Bij het krimpen sluit de mof met spanning aan cp de einden van de isolatiemantel, zodat een dichte verbinding wordt verkregen.Such a method is known from practice. With the crimp sleeve it is possible to close the connection point between two pipe ends fastened together and the insulating material to be applied around it in an impeccable manner with respect to the environment. The crimp sleeve can be placed with great play on one end of an insulating jacket before making the splice joint / can then ever be placed on the spaced ends of the insulating jackets of the joined pipes and then shrinked / either with a burner or a hot air appliance or with an oven consisting of two halves to be placed around it. When shrinking, the sleeve tightly connects to the ends of the insulating jacket, so that a tight connection is obtained.

Een bezwaar van deze bekende werkwijze is dat de aanvankelijk uitstékende verbinding cp den duur aan kwaliteit verliest doordat de span-25 ning waarmee de krimpnof op de isolatiemantel aangrijpt door krimp geleidelijk verloren gaat. De aanvankelijk goede verbinding wordt dan een slechte verbinding, waardoorheen vocht Iran binnendringen in het cm de lasverbinding aangébrachte isolatiemateriaal, waardoor de pijp aldaar kan gaan roesten en het isolatiemateriaal kan worden aangetast.A drawback of this known method is that the initially protruding connection loses quality over time because the tension with which the crimp sleeve engages the insulating jacket is gradually lost due to shrinkage. The initially good connection then becomes a bad connection, through which moisture penetrates Iran into the insulating material applied in the welded joint, whereby the pipe can rust there and the insulating material can be damaged.

30 Doel van de uitvinding is een werkwijze te verschaffen waarbij dit bezwaar niet meer kan optreden.The object of the invention is to provide a method in which this drawback can no longer occur.

Dit doel wordt overeenkomstig de uitvinding bereikt doordat dat tussen het buitenvlak van de isolatiemantel en de nog niet gekrompen mof een eléktrische geleider wordt geplaatst die eventueel zelf is cmgeven 35 door een thermoplastische kunststof met in wezen soortgelijke verwékings- en smelteigenschappen als de kunststof van de isolatiemantel ai van de krimpnof, daarna de krimpnof tot krimpen wordt gébracht en nadat deze krimp is voltooid de mof en de mantel door elektrische verhitting met béhulp van de aangébrachte draden aan elkaar warden 40 gelast.According to the invention, this object is achieved in that an electric conductor is placed between the outer surface of the insulating jacket and the not yet crimped sleeve, which optionally is itself given by a thermoplastic plastic with essentially similar softening and melting properties as the plastic of the insulating jacket After the crimp nub, then the crimp nub is brought to shrink, and after this crimp has been completed, the sleeve and jacket are welded together by electrical heating with the aid of the applied wires.

8300692 * '* -2- 0veree5&istig de uitvinding wordt dus vlak nadat de krimpverbin-ding tot stand is gebracht een smeltverbinding gecreëerd, die de mof en de isolatiemantel permanent met elkaar verbindt waardoor het niet meer van belang is of de door het krimpen verkregen klemspanning qp den duur 5 verloren gaat. De krimpmof heeft, voordat hij wordt gekrorpen, voldoende speelruimte cm de elektrische draad aan te brengen. Deze kan cm de mantel worden gewikkeld, waarna de krimpmof eroverheen wordt geschoven, uiteraard onder vrijlating van uiteinden die op een stroanbron kunnen worden aangesloten. Na het teweegbrengen van het krimpen is de elek-10 trische draad stevig ingéklemd. Wordt deze dan elektrisch verhit tot een tanperatuur waarbij de mantel van de draad smelt alsmede de aangrenzende vlakken van de mof en van de buis, dan ontstaat mede onder invloed van de klemspanning een uitstekende smeltverbinding. Volgens de uitvinding wordt dus gébruik gemaakt van de eigenschappen van de krimpmof en worden 15 deze gékcmbineerd met het op zichzelf wel elders békende tot stand brengen van een las door middel van eléktrische of induktieve verhitting. Aan de mof zijn geen extra voorzieningen nodig. De uitvinding maakt het dus mogelijk onder gebruikmaking van de toch aanwezige speling bij de niet gékrcmpen mof een permanente verbinding te 20 creèren zonder dat daarvoor meer investeringen nodig zijn dan een eléktrische draad en een stroombron.Thus, the invention creates a fusion connection shortly after the shrinkage connection is established, which permanently bonds the sleeve and the insulating sheath, so that it no longer matters whether the clamping stress obtained by the shrinking qp duration 5 is lost. Before being crimped, the shrink sleeve has sufficient leeway to apply the electric wire. This can be wrapped around the jacket, after which the shrink sleeve is slid over it, of course leaving ends that can be connected to a source of power. After the crimping has been effected, the electrical wire is firmly clamped. When it is then electrically heated to a temperature at which the jacket of the wire melts, as well as the adjacent surfaces of the sleeve and of the tube, an excellent melting connection is created partly under the influence of the clamping voltage. Thus, according to the invention, use is made of the properties of the shrink sleeve and these are combined with the creation of a weld, which is known elsewhere, by means of electric or inductive heating. No extra facilities are required at the sleeve. Thus, the invention makes it possible to create a permanent connection at the non-crimped sleeve, using the play that is nevertheless present, without requiring more investments than an electric wire and a current source.

De werkwijze volgens de uitvinding kan nog verder worden vereenvoudigd door voor de eléktrische draad een draad te nemen, die twee aders heeft, die aan SSn einde met elkaar worden verbonden. Een 25 dergelijke draad hoeft dan slechts aan ëën einde blank te worden genaakt zodat de twee geleiders in elkaar kunnen worden gedraaid waarna de draad in tenminste SSn winding cm de mantel wordt geslagen, waarna de mof eroverheen wordt geschoven.The method according to the invention can be further simplified by taking a wire for the electric wire, which has two cores, which are connected to each other at the SSn end. Such a wire then only has to be made bare at one end so that the two conductors can be twisted together, after which the wire is wrapped in the jacket in at least one turn, after which the sleeve is slid over it.

De uitvinding zal thans nader worden toegelicht aan de hand van de 30 tekening.The invention will now be further elucidated with reference to the drawing.

Deze toont in doorsnede de verbindingsplaats van twee thermisch geïsoleerde pijpstukken.This shows in cross section the connection point of two thermally insulated pipe pieces.

De tékening toont twee pijpstukken 1 en 2, die bijvoorbeeld met behulp van een V-las 3 aan elkaar zijn bevestigd. Deze pijpen 1 en 2 35 zijn over het grootste deel van hun lengte angeven door een isolatiemantel 4 respéktievelijk 5, bestaande uit een kunststof. De ruimte tussen de pijpen 1 respéktievelijk 2 en de mantels 4 respéktievelijk 5 is opgevuld met een isolatiemateriaal, bijvoorbeeld een schuimkunststof 6 respéktievelijk 7.The drawing shows two pipe pieces 1 and 2, which are fastened together by means of a V-weld 3, for example. These pipes 1 and 2 are angled over most of their length by an insulating jacket 4 and 5, respectively, consisting of a plastic. The space between the pipes 1 and 2 and the jackets 4 and 5, respectively, is filled with an insulating material, for example a foam plastic 6 and 7, respectively.

40 Voordat bijvoorbeeld de las 3 wordt genaakt wordt over SSn van de 83 0 0 69 2 -3- mantels een uit een thermoplastische kunststof bestaande krimgmof geschoven zoals met onderbroken lijnen is aangegeven bij 8. Deze krimpnafis zodanig gerékt, dat hij een ruime speling 9 heeft ten opzichte van de mantel. Cm elk uiteinde van de mantel 4 respéktievelijk wordt nu een twee-aderige elektrische geleider 10 gewikkeld in de vorm 5 van tenminste Sën winding. Aan Sën einde warden de twee aders met elkaar verbinden en aan het andere einde kan aansluiting plaatsvinden cp de schematisch aangeduide stroombron 11. De krimpnof kan nu gemakkelijk over de beide windingen 10 heen worden geschoven zoals met onderbreken lijnen aangegeven bij 12.40 Before, for example, weld 3 is made, a shrink sleeve consisting of a thermoplastic plastic consisting of a thermoplastic synthetic material is slid over SSn of the 83 0 0 69 2 -3 as indicated by broken lines at 8. This crimp nafis is stretched such that it has a wide clearance relative to the mantle. At each end of the sheath 4, respectively, a two-core electrical conductor 10 is now wound in the form 5 of at least one winding. At the end the two wires are connected to each other and at the other end connection can be made to the schematically indicated power source 11. The crimp sleeve can now easily be slid over both windings 10 as indicated by broken lines at 12.

10 De ruimte 13 rondan de las 3 en tussen de uiteinden van de isola-tiemantels 4, 6 respëktievelijk 5, 7 kan zijn cpgevuld met isolerend materiaal voordat de mof 12 is geplaatst, maar dit kan ook later plaatsvinden door het inspuiten van een opschuimende kunststof.The space 13 around the weld 3 and between the ends of the insulating jackets 4, 6 and 5, 7, respectively, can be filled with insulating material before the sleeve 12 is placed, but this can also be done later by injecting a foaming plastic .

Na het verschuiven van de mof in de met 12 aangeduide stand wordt 15 deze verhit op op zichzelf békende wijze waardoor de mof krinpt en de in de ondefhelft van de tékening aangegeven vorm aanneemt, waarbij deze mof, zoals aangegeven in het linker gedeelte bij 14 met klemspanning gaat liggen rondcm de eléktrische geleider 10.After the sleeve has been shifted into the position indicated by 12, it is heated in a manner known per se, so that the sleeve shrinks and takes the form indicated in the bottom half of the drawing, this sleeve, as indicated in the left-hand section at 14 clamping voltage lies around the electrical conductor 10.

Wordt daarna voldoende strocrn door de geleider 10 gevoerd, dan 20 smelt diens cnhulling 15 en deze versmelt met het kunststof materiaal van de mantel 5 en het kunststof materiaal van de mof, zodat de smelt— verbinding ontstaat zoals deze is aangegeven bij 16.If thereafter sufficient current is passed through the conductor 10, its casing 15 melts and it fuses with the plastic material of the jacket 5 and the plastic material of the sleeve, so that the melting connection is made as indicated at 16.

8300 69 28300 69 2

Claims (2)

1. Werkwijze voor het bevestigen van een krinpnof op de uiteinden van de uit thermoplastische kunststof bestaande isolatiemantel van een 5 thermisch geïsoleerde leiding# welke krinpnof dient ter overbrugging van de aan elkaar gelaste-einden van de binnenpijp en tussen deze pijp en de krinpnof alsmede tussen de op afstand van elkaar gelegen einden van de mantel isolerend materiaal bevat, met het kenmerk, dat tussen het buitenvlak van de isolatiemantel en de nog niet gekrompen mof een elék-10 trische geleider wordt geplaatst die eventueel zelf is angeven door een thermoplastische kunststof met in wezen soortgelijke verwekings- en smelteigenschappen als de kunststof van de isolatiemantel en van de krinpnof, daarna de krinpnof tot krimpen wordt gébracht en nadat deze krimp is voltooid de mof en de mantel door elektrische verhitting met 15 behulp van de aangebrachte draden aan elkaar worden gelast.1. Method for attaching a crimp sleeve to the ends of the thermoplastic plastic insulating jacket of a thermally insulated pipe # which crimp sleeve serves to bridge the welded ends of the inner pipe and between this pipe and the crimp sleeve as well as between the spaced ends of the jacket contain insulating material, characterized in that an electrical conductor is placed between the outer surface of the insulating jacket and the not yet crimped sleeve, which may itself be angled by a thermoplastic plastic with essentially similar softening and melting properties as the plastic of the insulating jacket and of the crimp sleeve, then the crimp sleeve is brought to shrinkage and after this crimp is completed, the sleeve and jacket are welded together by electric heating using the applied wires. 2. Werkwijze volgens conclusie 1, met het kenmerk, dat een elektrische draad wordt toegepast met twee aders, die aan SSn einde met elkaar worden verbonden. ***** 83 0 0 69 2Method according to claim 1, characterized in that an electrical wire is used with two wires, which are connected to each other at the SSn end. ***** 83 0 0 69 2
NL8300692A 1983-02-24 1983-02-24 METHOD FOR ATTACHING A CRIMPING SOCKET ON THE ENDS OF THE INSULATING COAT OF A THERMALLY INSULATED PIPE. NL8300692A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL8300692A NL8300692A (en) 1983-02-24 1983-02-24 METHOD FOR ATTACHING A CRIMPING SOCKET ON THE ENDS OF THE INSULATING COAT OF A THERMALLY INSULATED PIPE.
PCT/NL1984/000008 WO1984003346A1 (en) 1983-02-24 1984-02-24 Method of securing a shrink sleeve upon the outer ends of the insulating jacket of a thermally insulated conduit
EP84901019A EP0138864A1 (en) 1983-02-24 1984-02-24 Method of securing a shrink sleeve upon the outer ends of the insulating jacket of a thermally insulated conduit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8300692 1983-02-24
NL8300692A NL8300692A (en) 1983-02-24 1983-02-24 METHOD FOR ATTACHING A CRIMPING SOCKET ON THE ENDS OF THE INSULATING COAT OF A THERMALLY INSULATED PIPE.

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NL8300692A true NL8300692A (en) 1984-09-17

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NL8300692A NL8300692A (en) 1983-02-24 1983-02-24 METHOD FOR ATTACHING A CRIMPING SOCKET ON THE ENDS OF THE INSULATING COAT OF A THERMALLY INSULATED PIPE.

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WO (1) WO1984003346A1 (en)

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GB9113563D0 (en) * 1991-06-24 1991-08-14 Raychem Sa Nv Covering for pipelines
GB9505303D0 (en) * 1995-03-16 1995-05-03 Raychem Sa Nv Pipe joint covering
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Also Published As

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EP0138864A1 (en) 1985-05-02
WO1984003346A1 (en) 1984-08-30

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