NL1011020C1 - Lasmofverbinding voor hogedrukleiding. - Google Patents

Lasmofverbinding voor hogedrukleiding. Download PDF

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Publication number
NL1011020C1
NL1011020C1 NL1011020A NL1011020A NL1011020C1 NL 1011020 C1 NL1011020 C1 NL 1011020C1 NL 1011020 A NL1011020 A NL 1011020A NL 1011020 A NL1011020 A NL 1011020A NL 1011020 C1 NL1011020 C1 NL 1011020C1
Authority
NL
Netherlands
Prior art keywords
sleeve
reinforced
inner tube
outer tube
tube
Prior art date
Application number
NL1011020A
Other languages
English (en)
Inventor
Hans Edward Guitoneau
Lambertus Gerrit Dalmolen
Original Assignee
Polva Pipelife 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 Polva Pipelife Bv filed Critical Polva Pipelife Bv
Priority to NL1011020A priority Critical patent/NL1011020C1/nl
Application granted granted Critical
Publication of NL1011020C1 publication Critical patent/NL1011020C1/nl

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Classifications

    • 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
    • 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
    • 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
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B29C66/12821—Stepped joint cross-sections comprising at least one overlap joint-segment comprising at least two overlap joint-segments
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • 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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • 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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several 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
    • 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
    • B29C66/721—Fibre-reinforced materials
    • 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
    • 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
    • B29C66/739—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 material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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"
    • 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
    • B29C66/71—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 composition of the plastics material 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
    • 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
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • 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
    • B29C66/739—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 material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • 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
    • B29C66/739—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 material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
    • B29K2995/0015—Insulating
    • 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
    • B29L2009/00—Layered products

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Earth Drilling (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Description

Lasmofverbindine voor hoeedrukleiding
De uitvinding heeft betrekking op een mofverbinding tussen twee leidingstukken van een hogedrukleiding, welke leidingstukken elk een fluïdumdichte 5 binnenmantel uit een thermoplastisch materiaal omvatten, alsmede een versterkte buitenmantel, waarbij de binnenmantels door middel van een fluïdumdichte las aan elkaar zijn bevestigd en de buitenmantels elk door middel van een verbindingsmof onderling zijn verbonden.
Een dergelijke mofverbinding is bekend uit WO-A-9512086. Hij is in het 10 bijzonder geschikt voor hogedrukleidingen, bijvoorbeeld geschikt voor drukken tot 100 bar. De verbinding in de binnenmantels van de leidingstukken wordt verkregen door lassen, en is daardoor zeer geschikt voor het verzekeren van de gewenste dichtheid. Als voorbeeld worden leidingen voor transport van gas en ruwe olie genoemd.
15 Bij deze bekende mofverbinding is op de naar elkaar gekeerde einden van de buitenmantels een verbindingsmof geplaatst. Door middel van conische bevestigingsringen is de verbindingsmof op het buitenoppervlak van de buitenmantel geklemd, waarbij de verbindingsmof en de leidingstukken plaatselijk worden vervormd ter verschaffing van het noodzakelijke axiale vasthoudvermogen.
20 Deze bekende mofverbinding bezit verscheidene nadelen. Allereerst kan de plaatselijke vervorming van de wand van de leidingstukken tot spanningsconcentraties aanleiding geven, die vooral bij hoge drukken tot bezwijken kunnen leiden.
Een verder nadeel is dat bij de verbinding meerdere losse onderdelen moeten worden toegepast, die vooraf op de leidingdelen moeten worden aangebracht.
25 Doel van de uitvinding is daarom een mofverbinding te verschaffen die deze nadelen niet heeft. Dat doel wordt bereikt doordat de verbindingsmof een thermoplastisch materiaal omvat en elektrische weerstandsdraden draagt, welke weerstandsdraden aansluitbaar zijn op een elektrische stroombron voor het doen smelten van de naar elkaar gekeerde oppervlakken van de verbindingsmof en de 30 buitenmantels ter verschaffing van een lasverbinding.
De verbindingsmof is aan elk der leidingstukken verbonden door middel van een rondlopende, continue las. De krachtsoverdracht tussen de leidingstukken en de verbindingsmof geschiedt via een groot lasoppervlak waardoor een zeer geleidelijk 1011 020 2 verlopend krachtenpatroon in de axiale richting optreedt en spanningsconcentraties worden vermeden.
In het bijzonder kan de verbindingsmof een binnenhuis uit thermoplastisch materiaal en een buitenhuis omvatten, in welke binnenhuis de weerstandsdraden zijn 5 opgenomen.
Ter verzekering van de gewenste axiale treksterkte van de verbindingsmof, kan de buitenhuis met vezels zijn versterkt voor het dragen van axiale en tangentiale krachten.
Bij voorkeur is de buitenhuis versterkt met hoogmodulaire vezels met een 10 elastisciteitsmodulus E > 50 GPa.
Het kan daarbij gaan om glasvezels, koolstofvezels of aramidevezels. Deze vezels kunnen zijn gevormd tot getwijnde koorden, die zijn geïmpregneerd met polyethyleenmateriaal van de buitenhuis.
Verder zijn de binnenhuis en de buitenhuis onderling verbonden voor het 15 overdragen van axiale en tangentiale krachten. De onderlinge verbinding van de binnenhuis en de buitenhuis van de verbindingsmof kan op allerlei wijzen worden uitgevoerd. Bij voorkeur bezitten de binnenhuis en de buitenhuis in axiale doorsnede in elkaar grijpende vormen.
De binnenhuis en de buitenhuis kunnen bijvoorbeeld in elkaar grijpende, in 20 omtreksrichting lopende tanden bezitten.
Ook kunnen de binnenhuis en de buitenhuis conische vormen bezitten, waarbij de binnenhuis twee conische delen bezit waarvan de einden met de grootste diameter naar elkaar zijn gericht, en de binnenhuis overeenkomstig gevormde conische holten bezit.
25 Mofverbindingen met verbindingsmoffen die een binnenhuis met elektrische weerstandsdraden omvatten, zijn bekend. Dergelijke binnenhuizen bezitten een standaardafmeting, en zouden, gezien de hoge krachten die in hogedrukleidingen optreden, soms een ontoereikende las kunnen leveren. Teneinde dergelijke standaardonderdelen toch bij hogedrukleidingen te kunnen toepassen, kan de 30 verbindingsmof tenminste twee aparte binnenhuizen hebben die in axiale richting naast elkaar liggen, en die zijn opgenomen in de buitenhuis.
- Dé verbindingsmof kan op verschillende manieren worden uitgevoerd, afhankelijk van de toepassingsmogelijkheden. Indien de verbindingsmof in axiale P1011 020 3 richting op de te verbinden leidingstukken kan worden geschoven, kan de verbindingsmof een in omtreksrichting ééndelige huls omvatten waarin de weerstandsdraden in omtreksrichting verlopend zijn opgenomen.
In een alternatieve uitvoering kan de verbindingsmof op elkaar aansluitende 5 schalen omvatten waarin de weerstandsdraden in axiale richting verlopend zijn opgenomen.
De uitvinding betreft tevens een verbindingsmof voor een mofverbinding, omvattende een binnenhuis uit thermoplastisch materiaal waarin weerstandsdraden zijn opgenomen, alsmede een versterkte buitenhuis.
10 Vervolgens zal de uitvinding nader worden beschreven aan de hand van de in de figuren weergegeven uitvoeringsvoorbeelden.
Figuur 1 toont de mofverbinding tussen twee leidingstukken.
Figuur 2 toont een vergroot detail van de mofverbinding.
Figuur 3 toont een variant.
15 De in de figuren 1 en 2 weergegeven mofverbinding tussen twee leidingstukken 2, 3 van de hogedrukleiding omvat een verbindingsmof 4. Deze verbindingsmof is opgebouwd uit een binnenhuis 5 uit thermoplastisch materiaal alsmede een buitenhuis 6 die vezelversterkt is voor het dragen van axiale krachten. Aan het inwendige oppervlak van de binnenhuis 10 is een aantal weerstandsdraden 7 20 opgenomen, die via (niet getoonde) aansluitklemmen kunnen worden verbonden met een stroombron.
Het buitenoppervlak van de binnenhuis draagt in omtreksrichting verlopende vertanding 8, terwijl het binnenoppervlak van de buitenhuis 6 overeenkomstige vertanding 9 draagt. Deze vertandingen 8, 9 grijpen nauwsluitend in elkaar, zodanig 25 dat de op de binnenhuis uitgeoefende belastingen, vooral die in axiale richting, betrouwbaar kunnen worden overgebracht op de buitenhuis 6.
De leidingen 2, 3 bestaan elk uit een fluïdumdichte binnenmantel 10 van een thermoplastisch materiaal. Deze binnenmantels 10 zijn ter plaatse van de las 11 fluïdumdicht aan elkaar bevestigd.
30 De leidingen 2, 3 bezitten verder een buitenmantel 12, die is opgebouwd uit een versterkingsvezellaag 13, alsmede een buitenlaag uit thermoplastisch beschermingsmateriaal 14.
*101102 0 4
Ter plaatse van de mofverbinding is de buitenste laag 14 uit thermoplastisch materiaal veijongd, zoals aangegeven bij 15.
Bij het samenstellen van de mofverbinding wordt het thermoplastische materiaal van zowel de binnenhuis 5 als van de buitenste laag thermoplastisch 5 materiaal 14 tot smelten gebracht, waardoor een innige verbinding wordt verkregen. Na afkoelen is de mofverbinding gereed. De axiale trekkrachten, die bij hogedrukleidingen aanzienlijk kunnen zijn, worden via de thermoplastische lagen 14, 15 en de vertandingen 8, 9 overgebracht op de buitenhuis uit vezelversterkt materiaal. Daardoor wordt een betrouwbare en voldoend sterke verbinding tussen de 10 leidingstukken 2, 3 verzekerd.
De in figuur 3 getoonde variant omvat een binnenhuis 16 die twee conische delen 18, 19 bezit. Deze conische delen 18, 19 passen nauwsluitend in de overeenkomstig gevormde conische holten 20, 21 van de buitenhuis 17. Dankzij deze vormen kunnen de axiale en tangentiale krachten tussen de binnenhuis 16 en de 15 buitenhuis betrouwbaar worden overgedragen.
; 1 »1011020

Claims (18)

1. Mofverbinding (1) tussen twee leidingstukken (2, 3) van een hogedrukleiding, welke leidingstukken (2, 3) elk een fluïdumdichte binnenmantel (10) 5 uit een thermoplastisch materiaal omvatten, alsmede een versterkte buitenmantel (12), waarbij de binnenmantels (10) door middel van een fluïdumdichte las (11) aan elkaar zijn bevestigd en de buitenmantels (12) elk door middel van een verbindingsmof (4) onderling zijn verbonden, met het kenmerk dat de verbindingsmof (4) een thermoplastisch materiaal (5) omvat en elektrische weerstandsdraden (7) draagt, 10 welke weerstandsdraden (7) aansluitbaar zijn op een elektrische stroombron voor het doen smelten van de naar elkaar gekeerde oppervlakken van de verbindingsmof (4) en de buitenmantels (12) ter verschaffing van een lasverbinding.
2. Mofverbinding volgens conclusie 1, waarbij de verbindingsmof (4) een 15 binnenhuis (5) uit thermoplastisch materiaal en een buitenhuis (6) omvat, in welke binnenhuis (5) de weerstandsdraden (7) zijn opgenomen.
3. Mofverbinding volgens conclusie 1 of 2, waarbij de buitenhuis (6) vezelversterkt is voor het dragen van axiale en/of tangentiale krachten. 20
4. Mofverbinding volgens conclusie 3, waarbij de buitenhuis (6) is versterkt met hoogmodulaire vezels met een elastisciteitsmodulus E > 50 GPa.
5. Mofverbinding volgens conclusie 4, waarbij de buitenhuis (6) is versterkt 25 met glasvezels.
6. Mofverbinding volgens conclusie 4 of 5, waarbij de buitenhuis (6) is versterkt met koolstofvezels.
7. Mofverbinding volgens conclusie 4, 5 of 6, waarbij de buitenhuis (6) is versterkt met aramidevezels. »101102 0
8. Mofverbinding volgens één der conclusies 3-7, waarbij de buitenhuis (6) is versterkt met getwijnde koorden.
9. Mofverbinding volgens één der conclusies 3-8, waarbij de vezels zijn 5 opgenomen in polyethyleen.
10. Mofverbinding volgens één der conclusies 2-9, waarbij de binnenhuis (5) en de buitenhuis (6) onderling zijn verbonden voor het overdragen van axiale en/of tangentiale krachten. 10
11. Mofverbinding volgens conclusie 10, waarbij de binnenhuis (5) en de buitenhuis (6) in axiale doorsnede in elkaar grijpende vormen (8, 9) bezitten.
12. Mofverbinding volgens conclusie 11, waarbij de binnenhuis (5) en de 15 buitenhuis (6) in elkaar grijpende, in omtreksrichting lopende tanden (8, 9) bezitten.
13. Mofverbinding volgens conclusie 10, 11 of 12, waarbij de binnenhuis (16) en de buitenhuis (17) conische vormen bezitten.
14. Mofverbinding volgens conclusie 13, waarbij de binnenhuis (16) twee conische delen (18, 19) bezit waarvan de einden met de grootste diameter naar elkaar zin gericht, en de binnenhuis (17) overeenkomstig gevormde conische holten (20, 21) bezit.
15. Mofverbinding volgens één der conclusies 11-14, waarbij de verbindingsmof (4) tenminste twee aparte binnenhuizen heeft die in axiale richting naast elkaar liggen, en die zijn opgenomen in de buitenhuis (6).
16. Mofverbinding volgens één der voorgaande conclusies, waarbij de 30 verbindingsmof (4) een in omtreksrichting ééndelige huls omvat waarin de weerstandsdraden in omtreksrichting verlopend zijn opgenomen. t Π 011020
17. Mofverbinding volgens één der conclusies 1-15, waarbij de verbindingsmof op elkaar aansluitende schalen omvat waarin de weerstandsdraden in axiale richting verlopend zijn opgenomen.
18. Verbindingsmof (4) voor een mofverbinding volgens één der voorgaande conclusies, omvattende een binnenhuis (5) uit thermoplastisch materiaal waarin weerstandsdraden (7) zijn opgenomen, alsmede een versterkte buitenhuis (6). P1 01102 0
NL1011020A 1998-05-14 1999-01-14 Lasmofverbinding voor hogedrukleiding. NL1011020C1 (nl)

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