NL7908598A - METHOD FOR CONNECTING MEDIUM FEED PRE-INSULATED TUBE PARTS AND THE TUBE CONNECTED WITH THAT METHOD - Google Patents

METHOD FOR CONNECTING MEDIUM FEED PRE-INSULATED TUBE PARTS AND THE TUBE CONNECTED WITH THAT METHOD Download PDF

Info

Publication number
NL7908598A
NL7908598A NL7908598A NL7908598A NL7908598A NL 7908598 A NL7908598 A NL 7908598A NL 7908598 A NL7908598 A NL 7908598A NL 7908598 A NL7908598 A NL 7908598A NL 7908598 A NL7908598 A NL 7908598A
Authority
NL
Netherlands
Prior art keywords
pipe
parts
jacket
weld
insulated
Prior art date
Application number
NL7908598A
Other languages
Dutch (nl)
Original Assignee
Heidemaatschappij Nederland B
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 Heidemaatschappij Nederland B filed Critical Heidemaatschappij Nederland B
Priority to NL7908598A priority Critical patent/NL7908598A/en
Priority to FI803649A priority patent/FI803649L/en
Priority to NO803580A priority patent/NO803580L/en
Priority to DK502380A priority patent/DK502380A/en
Priority to DE8080201126T priority patent/DE3070866D1/en
Priority to AT80201126T priority patent/ATE14239T1/en
Priority to EP80201126A priority patent/EP0029632B1/en
Publication of NL7908598A publication Critical patent/NL7908598A/en

Links

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
    • 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
    • B29C65/40—Applying molten plastics, e.g. hot melt
    • B29C65/42—Applying molten plastics, e.g. hot melt between pre-assembled parts
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/54—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts
    • 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
    • B29C66/11—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
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre 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
    • B29C66/40—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
    • 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
    • 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
    • B29C66/434—Joining substantially flat articles for forming corner connections, fork connections or cross connections
    • B29C66/4342—Joining substantially flat articles for forming corner connections, e.g. for making V-shaped pieces
    • B29C66/43421—Joining substantially flat articles for forming corner connections, e.g. for making V-shaped pieces with a right angle, e.g. for making L-shaped pieces
    • 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
    • B29C66/50—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
    • B29C66/50—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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/547—Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes
    • 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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/547—Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes
    • B29C66/5474—Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes for making fork-shaped pieces, i.e. with 3 branches, e.g. Y-shaped pieces
    • B29C66/54741—Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes for making fork-shaped pieces, i.e. with 3 branches, e.g. Y-shaped pieces for making T-shaped pieces
    • 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
    • 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
    • F16L59/163—Branch units ; Insulation forming a whole with branches
    • 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
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
    • 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)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Thermal Insulation (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Fireproofing Substances (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Pipes (1) used for transporting hot water or other heated fluids are supplied with a thermal insulation jacket protected by an outer covering (3). A joint between pieces of such pipe is made in the following way. The insulation (2) and outer cover (3) are removed over a short distance from the end of each piece of pipe. The two pieces of pipe are then joined together by butt welding. The gap between the two sections of thermal insulation is then filled with two half shells of insulating material. Finally these half shells of insulation are covered with half shells of a protective layer which is butt welded along circumferential seams (4) to the ends of the existing protective cover (3) and these outer half shells are also welded to each other along the longitudinal seam (5). The edges of the welded material are chamfered to produce a flush weld.

Description

* * t ft *? -1-* * t ft *? -1-

Werkwijze voor het verbinden van medium voerende, vooraf geïsoleerde buisdelen, alsmede de met die wijze verbonden buisdelen.Method for connecting pre-insulated pipe sections carrying medium, as well as the pipe sections connected to it.

De uitvinding heeft betrekking op een werkwijze voor het -verbinden van medium voerende, vooraf geïsoleerde buisdelen, waarbij de isolatie is beschermd door een mantel- · buis.The invention relates to a method for connecting pre-insulated pipe sections carrying medium, in which the insulation is protected by a jacket pipe.

5 De volgens de uitvinding te maken verbinding is in het bijzonder bedoeld voor geïsoleerde buizen voor ondergronds warmwatertransport. De verbinding van de buisdelen dient daarom aan een aantal eisen te voldoen, met name een voldoende sterkte om uitwendige belastingen 10 te kunnen weerstaan, alsmede waterdicht aangezien het grondwater de isolatie en naderhand de medium voerende kernbuis kan aantasten.The connection to be made according to the invention is in particular intended for insulated pipes for underground hot water transport. The connection of the pipe parts must therefore meet a number of requirements, in particular a sufficient strength to withstand external loads 10, and watertight since the groundwater can attack the insulation and subsequently the medium-carrying core pipe.

Het is bekend om ter plaatse van de verbinding overschuifiTDffen?:aari:tebrengen, die groter zijn dan de buiten- 15 diameter van de buitenmantel en die mst behulp van krinpnoffen hieraan bevestigd worden.It is known to provide displacements at the location of the connection which are larger than the outer diameter of the outer jacket and which are attached to them by means of crimping sleeves.

Gebleken is dat deze krimpmoffen de axiale vervorming en belasting ten gevolge van temperatuurwijzigingen en/of zettingen niet kunnen weerstaan.It has been found that these shrink sleeves cannot withstand axial deformation and stress due to temperature changes and / or settlements.

De uitvinding beoogt een werkwijze te 20 verschaffen, waarbij een zodanig verbinding tussen de vooraf geïsoleerde buisdelen tot stand kan worden gebracht dat aan bovengenoemde eisen wat betreft mechanische sterkte en dichtheid wordt voldaan.The object of the invention is to provide a method in which a connection between the pre-insulated pipe parts can be effected such that the above-mentioned requirements in terms of mechanical strength and density are met.

De werkwijze volgens de uitvinding onderscheidt 25 zich door het over een bepaalde lengte vanaf elk buiseinde verwijderen van isolatie en mantelbuis, het op conventionele wijze lassen van de buisdelen, 30 het aanbrengen van schaalvormige isolatiedelen en manteldelen, 7 9 Q 8 5 9 s -2- het stomplassen van de schaalvormige manteldelen en mantelbuis.The method according to the invention is distinguished by removing insulation and jacket pipe over a certain length from each pipe end, welding the pipe parts in a conventional manner, applying shell-shaped insulating parts and jacket parts, 7 9 Q 8 5 9 s -2 - butt welding of the shell-shaped casing parts and casing pipe.

Dankzij de stomplas wordt ook ter plekke van de verbinding een gladde buitenmantel verkregen waardoor 4 5 extra belasting ten gevolge van (passieve) gronddruk bij de minste geringste axiale beweging van de buis wordt geminimaliseerd.Thanks to the butt weld, a smooth outer jacket is also obtained at the location of the connection, so that an additional load due to (passive) ground pressure is minimized at the slightest axial movement of the pipe.

Indien de mantelbuis bestaat uit kunststof materiaal geniet het de voorkeur om de lasranden van de 10 manteldelen respectievelijk mantelbuis voor te bewerken, waarna de stomplas- door extrusielassen tot stand wordt gebracht. Bij extrusielassen wordt nieuw materiaal in de lasvoeg toegevoerd en door warmte met het basismateriaal versmolten totdat dit een geheel vormt met het moedermateriaal.If the casing tube consists of plastic material, it is preferable to pre-process the welding edges of the casing parts or casing tube, after which the butt welding is effected by extrusion welding. In extrusion welding, new material is fed into the weld joint and fused with the base material by heat until it forms a whole with the parent material.

15 Bij voorkeur worden de lasranden van de aaneen te hechten delen zodanig voorbewerkt dat een V-naadlas tot stand kan worden gebracht.Preferably, the weld edges of the parts to be bonded are pre-treated such that a V-seam weld can be effected.

Voor het verkrijgen van een spanningsvrije omtrekslas stelt de uitvinding voor om eerst de langslas 20 en vervolgens de omtrekslas tussen de verschillende delen te leggenTo obtain a stress-free circumferential weld, the invention proposes to first lay the longitudinal weld 20 and then the circumferential weld between the different parts

De uitvinding heeft voorts betrekking op geïsoleerde medium voerende buisdelen die volgens bovengenoemde werkwijze aan elkaar zijn verbonden.The invention furthermore relates to insulated pipe sections carrying medium which are connected to one another according to the above method.

25 De uitvinding wordt nader toegelicht in de hieronder staande figuurbeschrijving.The invention is further elucidated in the figure description below.

In de tekening toont: fig.l een zijaanzicht van een volgens de uitvinding gemaakte verbinding tussen geïsoleerde buiseinden, 30 fig.2 een doorsnede volgens de lijn II-II in fig.l, fig.3 een zijaanzicht van een T-verbinding, fig.4,5,6, verschillende uitvoeringsvoorbeelden van lasnaadvormen.In the drawing: fig. 1 shows a side view of a connection between insulated pipe ends made according to the invention, fig. 2 a section according to the line II-II in fig. 1, fig. 3 a side view of a T-connection, fig. .4,5,6, various embodiments of weld seam shapes.

35 In de figuren wordt met het cijfer 1 de medium voerende kernhuis aangegeven, waaromheen een isolatie 2 is aangebracht. De isolatie is zelf beschermd . door middel van een mantelbuis 3.In the figures, the numeral 1 indicates the medium-carrying core housing, around which an insulation 2 is fitted. The insulation is self-protected. by means of a jacket pipe 3.

^ Voor het verbinden van de buizen dient niet 7 9 0 8 5 9 8 · * * ^ ~ -3- alleen de kernhuis 1 door middel van een conventionele las aan elkaar te worden gehecht, maar ook de mantelbuizen 3 teneinde de isolatie 2 ook bij de verbinding voldoende bescherming te bieden.^ To connect the pipes, not only the core casing 1 must be bonded together by means of a conventional weld, but also the casing pipes 3 in order to insulate the insulation 2. provide adequate protection during connection.

5 Voor de verbinding worden eerst op een bepaalde afstand van de buiseinden de mantelbuis 3 en isolatie 2 verwijderd, zodanig dat een afstand Δ tussen de mantelbuizen overblijft. Vervolgens worden isolatieschaaldelen 2' en 2" rond de vooraf aan elkaar gelaste kernhuizen 1 aangebracht, 10 zie fig.2-, alsmede een tweetal mantelschaaldelen 3', 3".For the connection, the jacket pipe 3 and insulation 2 are first removed at a certain distance from the pipe ends, such that a distance Δ remains between the jacket pipes. Insulating shell parts 2 'and 2 "are then fitted around the pre-welded core housings 1, see fig. 2-, as well as two casing shell parts 3', 3".

Voor het hechten van de schaaldelen aan de mantelbuis respectievelijk aan elkaar kan een extrusie langslas 5 #en vervolgens een extrusie omtrekslas 4 worden aangebracht. Hiertoe dienen de lasranden te zijn 15 voorbewerkt, zodat een V-lasnaad, zie fig.2 wordt bereikt.For adhering the shell parts to the casing tube or to each other, an extrusion longitudinal weld 5 # and subsequently an extrusion circumferential weld 4 can be applied. For this purpose, the welding edges must be pre-machined, so that a V welding seam, see fig. 2, is achieved.

Uit de figuren blijkt duidelijk dat een gladde doorgaande mantel wordt verkregen, zodat geen extra belastingen tengevolge van gronddruk of zetting op de mantelbuis 3 kan worden uitgeoefend.It is clear from the figures that a smooth continuous jacket is obtained, so that no additional loads as a result of ground pressure or settlement can be exerted on the jacket pipe 3.

20 Figuur 3 toont een T-verbinding, waarbij êén der schaaldelen van de buitenmantel is voorzien van een aftakstompdeel 6, en waarbij de verdere verbinding op de hierboven beschreven wijze plaatsvindt.Figure 3 shows a T-connection, in which one of the shell parts of the outer jacket is provided with a branch stub part 6, and in which the further connection takes place in the manner described above.

Bij voorkeur dient de langsnaad 5 op de 25 neutrale lijn n-n ten opzichte van de buigbelasting te liggen.Preferably, the longitudinal seam 5 should lie on the neutral line n-n relative to the bending load.

Fig.4,5,6, tonen verschillende uitvoeringsvormen van lasnaden buiten de in figuur 2 getekende V-naad.Fig. 4,5,6 show different embodiments of weld seams outside the V-seam shown in Fig. 2.

Fig.5 toont een hoeklas, en fig.6 een V-las 30 tussen delen met verschillende wanddikte.Fig. 5 shows a fillet weld, and Fig. 6 a V-weld 30 between parts of different wall thickness.

De lasnaad heeft bij voorkeur een vooropening van 1-1% mm. waarbij de openingshoek o( bij voorkeur 65° bedraagt.The weld seam preferably has a front opening of 1-1% mm. the opening angle o (preferably 65 °.

De getoonde lasuitvoeringen laten duidelijk zien dat extra materiaal wordt toegevoerd, welke maatregel het mogelijk 35 maakt om zonder verschuiving van de buitenmantel 3 ten opzichte van de kernhuis 1 een dichte. verbinding tussen de schaaldelen 3', 3"rond de verbinding tot stand te brengen.· 7908598The welding embodiments shown clearly show that additional material is supplied, which measure makes it possible to form a tight seal without displacement of the outer jacket 3 relative to the core housing 1. connection between the shell parts 3 ', 3 "around the connection. · 7908598

Claims (7)

1. Werkwijze voor het verbinden van medium voerende, vooraf geïsoleerde buisdelen, waarbij de isolatie is beschermd door een mantelbuis, gekenmerkt door het over een bepaalde lengte vanaf elk buiseinde 5 verwijderen van isolatie en mantelbuis, het op conventionele wijzen aaneenlassen van de buisdelen, het aanbrengen van schaalvormige isolatiedelen en manteldelen, 10 het stomplassen van de schaalvormige manteldelen en mantelbuis.1. Method for connecting medium-carrying, pre-insulated pipe parts, wherein the insulation is protected by a jacket pipe, characterized by removing insulation and jacket pipe from each pipe end over a certain length, welding the pipe parts together in conventional ways, arranging shell-shaped insulating parts and jacket parts, butt welding of the shell-shaped jacket parts and jacket pipe. 2. Werkwijze volgens conclusie 1, met het kenmerk, dat de lasranden van de manteldelen respectievelijk mantelbuis, worden voorbewerkt en de stomplas door extrusie™ 15 lassen tot stand wordt gebracht...Method according to claim 1, characterized in that the welding edges of the casing parts or casing are prepared and the butt weld is created by extrusion welding. 3. Werkwijze volgens conclusies 1 en 2, met het kenmerk, dat als las tussen de manteldelen en mantelbuis een V-naadlas wordt toegepast.Method according to claims 1 and 2, characterized in that a V-seam weld is used as a weld between the jacket parts and the jacket pipe. 4. Werkwijze volgens conclusies 1-3, met het 20 kenmerk, dat na het leggen van de langslassen de omtrekslassen worden gelegd.4. Method according to claims 1-3, characterized in that the circumferential welds are laid after the longitudinal welds have been laid. 5. Geïsoleerde, medium voerende buisdelen verbonden volgens de werkwijze volgens conclusie 1-4.Insulated, medium-carrying pipe sections connected according to the method according to claims 1-4. 6. Geïsoleerde, medium voerende buisdelen 25 met het kenmerk, dat de langslassen in de ten opzichte van de belasting neutrale vlak liggen.6. Insulated, medium-carrying pipe sections 25, characterized in that the longitudinal welds lie in the plane neutral to the load. 7. Geïsoleerde medium voerende buisdelen, volgens conclusie 5, met het kenmerk, dat de lasnaad een vooropening van 1-1½ mm. vertoont en de openingshoek van 30 de naad 65° is. 7908598 »* ,Insulated pipe sections carrying medium, according to claim 5, characterized in that the weld seam has a front opening of 1-1½ mm. and the opening angle of the seam is 65 °. 7908598 »*,
NL7908598A 1979-11-27 1979-11-27 METHOD FOR CONNECTING MEDIUM FEED PRE-INSULATED TUBE PARTS AND THE TUBE CONNECTED WITH THAT METHOD NL7908598A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL7908598A NL7908598A (en) 1979-11-27 1979-11-27 METHOD FOR CONNECTING MEDIUM FEED PRE-INSULATED TUBE PARTS AND THE TUBE CONNECTED WITH THAT METHOD
FI803649A FI803649L (en) 1979-11-27 1980-11-24 FOERFARANDE FOER ATT FOERBINDA MEDIUMLEDANDE FOERISOLERADE ROERSTYCKEN OCH GENOM DETTA FOERFARANDE FOERBUNDNA ROERSTYCKEN
NO803580A NO803580L (en) 1979-11-27 1980-11-26 PROCEDURE FOR JOINING MEDIUM-CONDUCTED PRISOLATED PIPES.
DK502380A DK502380A (en) 1979-11-27 1980-11-26 PROCEDURE FOR CONNECTING MEDIUM-LEADING PRE-INSULATED PIPES AND PIPES CONNECTED WITH THIS PROCESS
DE8080201126T DE3070866D1 (en) 1979-11-27 1980-11-27 Process for joining pre-insulated pipe sections that carry a medium, and pipe sections joinded by this process
AT80201126T ATE14239T1 (en) 1979-11-27 1980-11-27 METHOD OF CONNECTING FLUID CARRYING PRE-INSULATED PIPE SECTION AND PIPE SECTION CONNECTED BY THIS METHOD.
EP80201126A EP0029632B1 (en) 1979-11-27 1980-11-27 Process for joining pre-insulated pipe sections that carry a medium, and pipe sections joinded by this process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7908598 1979-11-27
NL7908598A NL7908598A (en) 1979-11-27 1979-11-27 METHOD FOR CONNECTING MEDIUM FEED PRE-INSULATED TUBE PARTS AND THE TUBE CONNECTED WITH THAT METHOD

Publications (1)

Publication Number Publication Date
NL7908598A true NL7908598A (en) 1981-07-01

Family

ID=19834242

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7908598A NL7908598A (en) 1979-11-27 1979-11-27 METHOD FOR CONNECTING MEDIUM FEED PRE-INSULATED TUBE PARTS AND THE TUBE CONNECTED WITH THAT METHOD

Country Status (7)

Country Link
EP (1) EP0029632B1 (en)
AT (1) ATE14239T1 (en)
DE (1) DE3070866D1 (en)
DK (1) DK502380A (en)
FI (1) FI803649L (en)
NL (1) NL7908598A (en)
NO (1) NO803580L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030776A2 (en) * 1979-12-18 1981-06-24 i.c. Möller a/s A method of providing a mantle tube connection across a joint between heat insulated pipes

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629216A (en) * 1982-06-29 1986-12-16 I. C. Moller A/S Method of joining prefabricated heat insulated pipes and a welding fitting therefore
FR2710723B1 (en) * 1993-09-29 1995-12-22 Gts Isopipe Method for connecting an insulating jacket of a pipe and connection shell for implementing this process.
NL1002786C2 (en) * 1996-04-04 1997-10-07 Kema Nv Tubing for transporting fluids thermally insulated from the environment.
FR2759145B1 (en) * 1997-02-04 1999-04-23 Polymat DEVICE FOR PROTECTING THE LINES OF JOINING BETWEEN THE TUBE SECTIONS FOR FORMING A PIPELINE IN PARTICULAR
AU8986898A (en) 1998-07-31 2000-02-28 Sarl Polymat Device for protecting parting lines between tube sections designed to constitutea pipeline in particular
GR20210100056A (en) * 2021-01-29 2022-08-08 Αναστασιος Θεοφιλου Ριζοπουλος Method-fitting for the welding and assembly of plural sections of pre-insulated pipes

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157204A (en) * 1960-10-19 1964-11-17 Morris T Phillips Insulating and protective covering devices
US3289704A (en) * 1965-01-22 1966-12-06 Joseph A Nicosia Sectionalized pipe
US3744823A (en) * 1971-03-01 1973-07-10 Shaw Pipe Ind Ltd High temperature pipeline joints
GB1435695A (en) * 1972-08-09 1976-05-12 Pipe Conduits Ltd Insulated service pipes
US3801140A (en) * 1972-08-15 1974-04-02 Renshaw J Inc Pre-insulated pipe conduit with test passage
CH585367A5 (en) * 1974-12-06 1977-02-28 Meldem Charles Butt-joining exposed ends of lagged pipes - using plastic sleeve including resistances which are heated electrically to shrink sleeve
GB1483143A (en) * 1976-03-03 1977-08-17 Weldwise Installations Ltd Method of joining insulated metal pipes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030776A2 (en) * 1979-12-18 1981-06-24 i.c. Möller a/s A method of providing a mantle tube connection across a joint between heat insulated pipes
EP0030776A3 (en) * 1979-12-18 1982-01-13 I.C. Moller A/S A method of providing a mantle tube connection across a joint between heat insulated pipes

Also Published As

Publication number Publication date
DK502380A (en) 1981-05-28
FI803649L (en) 1981-05-28
DE3070866D1 (en) 1985-08-14
EP0029632B1 (en) 1985-07-10
ATE14239T1 (en) 1985-07-15
NO803580L (en) 1981-05-29
EP0029632A1 (en) 1981-06-03

Similar Documents

Publication Publication Date Title
US1894835A (en) Method of and apparatus for joining pipes
CN101678608B (en) The fusion process therefor of conduit and manufacture and conduit
US5127116A (en) Pipe joint
US4718698A (en) Apparatus and method of forming fusion welded butt joint between thermoplastic pipe sections
US4465307A (en) Pipe coupler for insulated pipes
NL7908598A (en) METHOD FOR CONNECTING MEDIUM FEED PRE-INSULATED TUBE PARTS AND THE TUBE CONNECTED WITH THAT METHOD
SU1384215A3 (en) Pipe for constructing heat-insulated pipeline
RU2712322C2 (en) Method of connecting sections of lined pipeline, section of lined pipeline and method of laying pipeline on sea bottom
NO167943B (en) DEVICE FOR HEAT-INSULATED PIPE SECTION FOR UNDERGROUND PIPELINE, AND PROCEDURE FOR THE PREPARATION OF SUCH PIPELINE
US11674631B2 (en) Electrofusion of pipe liners
NZ202768A (en) Welded pipe joint with heat insulator to protect pipe lining when welding
KR101878233B1 (en) Thermal shrinkage Casing having internal heating member, Thermal shrinkage Seat having internal heating member and method for manufacturing thereof
NZ515205A (en) Insulated pipe structure and methods of making such structures
KR101635426B1 (en) Casing for connecting double insulation pipe, method for manufacturing the casing, and method for connecting double insulation pipe using the casing
NL1002786C2 (en) Tubing for transporting fluids thermally insulated from the environment.
EP1087171B1 (en) Electric welding sleeve and method of making same
RU2027939C1 (en) Pipe with internal plastic envelope
US2923650A (en) Method of and device for heat-insulating piping for the long-distance conveyance of heating fluids
KR102683375B1 (en) dual heat shrink casing cover sheet with reinforced connection of dual thermal pipes and method for installation thereof
GB2184804A (en) A plastic shrink socket for joining two tube ends
KR101936105B1 (en) Method for manufacturing the casing for double insulation pipe, casing and method for establishment double insulation pipe use of improved airtightness and keep warm
JP3690615B2 (en) Electric fusion pipe fitting
CN105526438A (en) Joint end structure of composite heat-insulating pipes and construction method of joint end structure
RU2046245C1 (en) Pipe joint
GB2076499A (en) Insulated pipes

Legal Events

Date Code Title Description
A1B A search report has been drawn up
CNR Transfer of rights (patent application after its laying open for public inspection)

Free format text: HEIDEMAATSCHAPPIJ BEHEER. N.V.

A85 Still pending on 85-01-01
BV The patent application has lapsed