SE460306B - Muffoerbindning foer vaermeisolerade ledningsroer - Google Patents

Muffoerbindning foer vaermeisolerade ledningsroer

Info

Publication number
SE460306B
SE460306B SE8300848A SE8300848A SE460306B SE 460306 B SE460306 B SE 460306B SE 8300848 A SE8300848 A SE 8300848A SE 8300848 A SE8300848 A SE 8300848A SE 460306 B SE460306 B SE 460306B
Authority
SE
Sweden
Prior art keywords
sleeve
plastic
connection according
sleeve connection
profile
Prior art date
Application number
SE8300848A
Other languages
English (en)
Other versions
SE8300848L (sv
SE8300848D0 (sv
Inventor
A Elbeshausen
W Artschwager
Original Assignee
Kabelmetal Electro Gmbh
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
Priority claimed from DE19828230424U external-priority patent/DE8230424U1/de
Application filed by Kabelmetal Electro Gmbh filed Critical Kabelmetal Electro Gmbh
Publication of SE8300848D0 publication Critical patent/SE8300848D0/sv
Publication of SE8300848L publication Critical patent/SE8300848L/sv
Publication of SE460306B publication Critical patent/SE460306B/sv

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B29D23/003—Pipe joints, e.g. straight joints
    • B29D23/005—Pipe joints, e.g. straight joints provided with electrical wiring
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1295—Foaming around pipe 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"
    • B29C65/3404—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
    • 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
    • B29C65/3428—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 said at least a single wire having a waveform, e.g. a sinusoidal form
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped 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
    • B29C66/01—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
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • 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
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • 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
    • B29C66/72—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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81471—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being a wrap-around tape or band
    • 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
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8414—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different diameter
    • 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"
    • B29C65/3472—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
    • 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
    • B29C66/733—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
    • B29C66/7336—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being opaque, transparent or translucent to visible light
    • B29C66/73365—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being opaque, transparent or translucent to visible light at least one of the parts to be joined being transparent or translucent to visible light
    • 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
    • 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)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Thermal Insulation (AREA)

Description

460 306 2 4? mycket dyr att framställa och montera. Ändamålet med uppfinningen är att åstadkomma en mufförbindning, som är väsentligt billigare att fram- ställa och monterá och är tät under längre tid, sär- 5 skilt mot stigande grundvatten.
Detta ändamål uppnås enligt uppfinningen därigenom, att den egentliga muffkroppen består av ett med överlapp- ning över förbindningsstället format plastband, som såväl i området för överlappningsfogen som i området 10 för anliggningen mot ytterröret är svetsat medelst ett elektriskt uppvärmbart band. Utöver de av ändamålet direkt framgående fördelarna har mufförbindningen enligt uppfinningen också den fördelen, att ett relativt dyrt muffrör kan undvaras och att muffkroppen i stället kan 15 framställas av ett väsentligt billigare material. Vid val av plastmaterial bör man beakta, att materialet för muffkroppen ska ha samma beskaffenhet som materialet i de värmeisolerade ledningsrörens yttermantel. Före- trädesvis utnyttjar man ett polyetenband, som är genom- zo synligt, så att man vid den avslutande skumfyllningen kan övervaka skumningsförloppet och därmed kan undvika hàlrum.
Företrädesvis är det elektriskt uppvärmbara bandet i meanderform insmält i plastbandets kantområde. Vid 25 anslutning av en strömkälla uppvärmes bandet genom motståndsuppvärmning och smälter därvid angränsande plastskikt, som hopsvetsas med varandra. Härvid är det väsentligt att ett lätt anpressningstryck föreligger såväl i området för anliggningsytan på ytterröret som 30 i området för överlappningsfogen.
Det har visat sig, att det vid ett stort avstånd mellan ytterrörändarna resp vid användning av mindre styvt material är svårt att åstadkomma en exakt svets- ning av längsfogen. 35 Detta problem löses därigenom, att en mot ytterrör- ändarna anliggande stödskena är anordnad under över- lappnignsfogen. Denna stödskena ger erforderligt mot- tryck under svetsningsförloppet. Stödskenan består före- lO 15 20 25 30 35 460 306 3 trädesvis av en T-profil, som lämpligen består av en _tunnväggig plåt. T-profilen är lätt men ändå tillräck- ligt styv för att motstå mottrycket. Såväl stödskenan som muffen anligger mot en i ytterrörens ändar utformad, ringformig urtagning. Därav erhålles den fördelen, att ingen diameterutvidgning i förhållande til yttermantelns ytterdiameter erhålles i mufförbindningsomràdet. Vid förskjutningar i jorden kan därmed inga skjuvkrafter uppträda. T-profilens fot är belägen i ett i området för urtagningen sig sträckande längsspár.
I fig l-S visas uppfinningen schematiskt.
I fig 1 visas ett plastband l, i vars kantomràde ett värmeband eller en värmetråd 3 är insmält. Plast- bandet består företrädesvis av polyeten och har exem- pelvis en tjocklek av ca 4 mm. För att värmetràden 2 ska uppvärmas anslutes ändarna 3 och 4 till en icke visad strömkälla. Genom motstándsuppvärmning av tråden 2 mjukgöres plastmaterialet i närheten av tråden och överföras därmed i svetsbart tillstànd.
I fig 2 visas en sektion genom mufförbindningen.
Här betecknas med 5 det mediumförande innerröret, med 6 skumplastskiktet och med 7 plastyttermanteln. Plast- bandet 1 anligger mot plastyttermanteln med en över- lappning, såsom visas vid 8. Plastbandet l tryckes medelst en manschett 9 mot yttermanteln 7, varvid överlappnings- fogområdet 8 samtidigt sammantryckes. För spänning av manschetten 9 utnyttjas en skruvtving 10, vars backar ll och 12 ingriper bakom manschettens 9 bockningar 13 och 14. Spännbackarna ll och 12 föres efter manschettens anbringande medelst en skruvspindel 15 närmare varandra och pressar därvid manschetten 9 mot ytterröret 7. I förspänt tillstånd uppvärmes värmetràden 2, och efter svetsförloppet borttages manschetten 9 från muffstället.
Pig 3 visar den färdiga mufförbindningèn, vid vilken plastbandet l omger förbindningsstället under anliggning mot yttermantlarna 7 och i omrâdet för de streckade ytorna är sammansvetsat med yttermantlarna 7 resp samman- svetsat i området för överlappningsfogen 8. 460 306 10 15 20 25 30 35 4 En i plastbandet l eventuellt utformad öppning, som tjänar till skumplastfyllning av utrymmet mellan innerröret 5 och plastbandet 1, kan på motsvarande sätt ; tätas genom anbringande av en plastskiva, svetsas med plastbandet l såsom beskrivits ovan.
Vid de i fig 4 och 5 visade utföringsexemplen är en T-profil 16 belägen under muffens l överlappningsfog 8. Hänvisningssiffrorna 19 och 20 visar omkretssvets- fogarna resp längssvetsfogen i området för överlappnings- fogen. Med 21 betecknas ledningsrörens värmeisolerings- skikt.
Vid framställning av den i fig 4 och 5 visade muff- förbindningen går man tillväga på följande sätt: Först utformar man medelst ett lämpligt verktyg en i omkretsriktningen sig sträckande urtagning 17 i yttermantelns 7 ände. Därefter utformas, exempelvis ¿ medelst en friktionssåg, i området för urtagningen 17 ett i riktning mot innerröret 5 sig sträckande längsspàr T-profilens SOm Samman- l8, vars djup åtminstone motsvarar höjden av 16 fot.
Efter detta förberedande rörens 5 ändar med varandra (22) och införes T-profilen 16 i spåren 18. Där omkretssvetsfogarna l9 ska sträcka sig inlägges nu en icke särskilt betecknad, meanderfor- mig värmetràd. Nu rullas muffbandet l kring förbind- ningsstället, varvid överlappningsomràdet lägges över T-profilen lö. En meanderformig värmetràd inlägges också i området för längssvetsfogen 20. Efter montering av varvid arbete hopsvetsas inner- spännanordningen inkopplas uppvärmningsströmmen, plastmaterialet i området för svetsfogarna 19 och 20 blir flytande och sammansvetsas.
Via öppningen 23 provas nu innerutrymmet mellan innerröret 5 och plastmuffbandet l vad avser täthet och eftersvetsas eventuellt. Via samma oppning 23, vil- ken eventuellt kan utvidgas, införes nu de flytande skumplastkomponenterna och åstadkommas skummet 6.
M

Claims (1)

  1. lO 15 20 25 30 460 306 PATENTKRAV l. Mufförbindning för värmeisolerade ledningsrör, som består av ett mediumförande innerrör (5), företrä- desvis av stàl, ett innerröret omgivande värmeisole- ringsskikt (6) av skumplast, företrädesvis polyuretan, och ett ytterrör (7) av plast, vid vilken mufförbindning de från skumplast fria ändarna av innerrören hos tvà rörlängder som ska förbindas med varandra är hopsvetsade med varandra, förbindningsstället är täckt med en mot ytterrörändarna anliggande muff och det mellan inner- röret och muffen befintliga ringutrymmet är skumfyllt, k ä n n e t e c k n a d därav, att den egentliga muff- kroppen består av ett med överlappning (8) över förbind- ningsstället format plastband (l), som såväl i området för överlappningsfogen (8) som i området för anligg- ningen mot ytterröret (7) är svetsat medelst ett elektriskt uppvärmbart band (2).
    2. Mufförbindning enligt patentkravet l, k ä n n e - t e c k n a d därav, att det elektriskt uppvärmbara bandet (2) i meanderform är insmält i plastbandets (1) kantomràde.
    3. Mufförbindning enligt patentkravet 1 eller 2, k ä n n e t e c k n a d därav, att en mot ytterrör- ändarna (7) anliggande stödskena (16) är anordnad under överlappningsfogen (8).
    4. Mufförbindning enligt något av de föregående patentkraven, k ä n n e t e c k n a d därav, att stöd- skenan (16) består av en T-profil. S. Mufförbindning enligt patentkravet 4, k ä n n e t e c k n a d därav, att T-profilen (l6) består av tunnväggig plåt. s.'Mufförbinaning enligt något av de föregående patentkraven, k ä n n e t e c k n a d därav, att såväl stödskenan (16) som muffen (l) anligger mot en i ytter- rörens (7) ändar utformad, ringformig urtagning (17).
    7. Mufförbindning enligt något av de föregående 460 506 6 patentkraven, k ä n e n t e c k n a d därav, att T-pro- filens (16) fot är' belägen i ett i området för urtag- ningen (17) sig sträckande längsspàr (18). 9.7
SE8300848A 1982-02-17 1983-02-16 Muffoerbindning foer vaermeisolerade ledningsroer SE460306B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8204372 1982-02-17
DE19828230424U DE8230424U1 (de) 1982-10-29 1982-10-29 Muffenverbindung fuer waermeisolierte leitungsrohre

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SE8300848D0 SE8300848D0 (sv) 1983-02-16
SE8300848L SE8300848L (sv) 1983-08-18
SE460306B true SE460306B (sv) 1989-09-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997037167A1 (en) * 1996-04-03 1997-10-09 Appelblad, Karl, Gunnar Method and tool for joining, repairs and maintenance of insulating line pipes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0286718A3 (de) * 1987-04-11 1989-05-10 kabelmetal electro GmbH Band aus thermoplastischem Kunststoff zur Abdeckung einer Verbindungsstelle und Verfahren zu seiner Herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997037167A1 (en) * 1996-04-03 1997-10-09 Appelblad, Karl, Gunnar Method and tool for joining, repairs and maintenance of insulating line pipes

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Publication number Publication date
NL191954B (nl) 1996-07-01
SE8300848L (sv) 1983-08-18
NL191954C (nl) 1996-11-04
NL8300580A (nl) 1983-09-16
SE8300848D0 (sv) 1983-02-16

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