DE2719320C2 - Vorrichtung zum inneren Abdichten von Rohrmuffenverbindungen - Google Patents

Vorrichtung zum inneren Abdichten von Rohrmuffenverbindungen

Info

Publication number
DE2719320C2
DE2719320C2 DE2719320A DE2719320A DE2719320C2 DE 2719320 C2 DE2719320 C2 DE 2719320C2 DE 2719320 A DE2719320 A DE 2719320A DE 2719320 A DE2719320 A DE 2719320A DE 2719320 C2 DE2719320 C2 DE 2719320C2
Authority
DE
Germany
Prior art keywords
sealing
strips
sleeve
expansion body
fabric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE2719320A
Other languages
English (en)
Other versions
DE2719320B1 (de
Inventor
Karl Friedrich 6000 Frankfurt Osten
Kurt 4100 Duisburg Peitz
Herbert Ing.(Grad.) 5620 Velbert Wimmershoff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to DE2719320A priority Critical patent/DE2719320C2/de
Publication of DE2719320B1 publication Critical patent/DE2719320B1/de
Application granted granted Critical
Publication of DE2719320C2 publication Critical patent/DE2719320C2/de
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/28—Lining or sheathing of internal surfaces applied by "rubber" bag or diaphragm
    • 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
    • B29C65/3408—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 single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3412—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 single particles, e.g. fillers or discontinuous fibre-reinforcements comprising fillers
    • 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
    • B29C65/344—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 being a woven or non-woven fabric or being a mesh
    • 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
    • B29C65/3444—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 being a ribbon, band or strip
    • 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
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5028—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being textile in woven or non-woven 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
    • 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
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements 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
    • B29C66/01—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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/349—Cooling the welding zone on the welding spot
    • B29C66/3494—Cooling the welding zone on the welding spot while keeping the welding zone under pressure
    • 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
    • B29C66/53—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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B29C66/634—Internally supporting the article during joining using an inflatable core
    • 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
    • B29C66/81455—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 fluid inflatable bag or bladder, a diaphragm or a vacuum bag for applying isostatic pressure
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
    • 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
    • B29C65/3484—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 non-metallic
    • B29C65/3492—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 non-metallic being carbon
    • 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
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pipe Accessories (AREA)

Description

■Γ)
Die Erfindung bezieht sich auf eine Vorrichtung nach dem Oberbegriff des Patentanspruchs 1.
Nach dem Hauptpatent 24 40 086.0 sollen undicht gewordene Rohrmuffenverbindungen, insbesondere >» Stemmuffenverbindungen von Erdgasleitungen, von der Rohrinnenseite her in der Weise abgedichtet werden, daß ein das Abdichtungsmittel tragender hohlzylindrischer und elastischer Dehnkörper in die Rohrleitung eingebracht und das Abdichtungsmittel durch Aufwei- r>r> ten des Dehnkörpers mittels Zufuhr von Druckluft an den inneren Ringspalt der Muffenverbindung angepreßt wird, worauf der Dehnkörper entlastet und aus der Rohrleitung entfernt wird. Dies wird nach dem Hauptpatent dadurch gelöst, daß mit dem Dehnkörper hl1 eine das Abdichtungsmittel tragende und den Dehnkörper umgebende Hülse aus thermoplastischem Kunststoff, vorzugsweise Polyvinylchlorid in den Bereich der Muffenverbindung gebracht, auf Erweichungstemperatur erwärmt, dann durch Aufweiten des Dehnkörpers '■> zusammen mit dem Dichtungsmittel an die Rohrinnenwand angepreßt und anschließend in angepreßtem Zustand bis zur Verfestigung abgekühlt wird, worauf der Dehnkörper aus der Rohrleitung entfernt wird. Die Erwärmung der thermoplastischen Kunststoffhülse erfolgt dabei unter anderem durch elektrische Widerstandserhitzung.
Der Erfindung liegt die Aufgabe zugrunde, ein elektrisches Widerstands-Heizelement für die Erhitzung der das Abdichtungsmittel tragenden thermoplastischen Kunststofftube zu schaffen, welches mit der gesamten Umfangsfläche der Kunststoffhülse für eine gleichmäßige Wärmeübertragung in Kontakt gebracht werden kann. Gelöst wird die Aufgabe mit den in den Patentansprüchen gekennzeichneten Mitteln.
Aus der Zeitschrift »MachineDesign« (Band 49, Nr. 2 vom 20.1.1977, Seite 7) ist eine Heizmatte, insbesondere auch aus Gummi od. dgl. bekannt. Schließlich ist es auch dem Fachmann bekannt. Stoffen elektrisch leitfähige Beimischungen wie Graphit oder Metallpulver zuzugeben. Die spezielle Ausgestaltung gemäß der Erfindung wird hierdurch jedoch nicht nahegelegt
In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung im Längsschnitt dargestellt. Es zeigt
F i g. 1 das aus dem Textilstreifen gebildete Widerstandsheizelement und
F i g. 2 die Gesamtanordnung der Vorrichtung nach dem Aufweiten des Dehnkörpers.
Zum Erhitzen der aus thermoplastischem Kunststoff bestehenden Hülse 11 auf Erweichungstemperatur dient ein elektrisch leitendes Textilgewebe, welches in Form von mehreren dicht aneinanderliegenden Längsstreifen 20 die Hülse U eng umhüllt. In den aneinanderstoßenden Längskanten der Gewebestreifen 20 sind metallische Folienstreifen 21 eingelagert, welche an eine nicht dargestellte Stromquelle mit den Drähten 17 und 18 angeschlossen sind. Die Gewebestreifen können aus an sich bekannten Textilien bestehen, in welchen für die elektrische Leitfähigkeit z. B. Graphit- oder Metallpulver eingelagert ist. Die Gewebestreifen 20 sind von einem elektrisch isolierenden, dehnfähigen Schlauchabschnitt 22 aus Gummi oder thermoplastischem Kunststoff umhüllt, auf welcher das Abdichtungsmittel 14 angeordnet ist. Der Schlauchabschnitt 22 dient neben seiner Funktion als Träger für das Dichtungsmittel auch dazu, die metallischen Rohre 1, 2 gegenüber dem stromführenden Heizelement zu isolieren.
Das Aufweiten des Dehnkörpers erfolgt wie im Hauptpatent beschrieben. Gemäß der Darstellung in F i g. 2 ist in die Rohrleitung 1 bzw. 2 in den Bereich der Stemmuffenverbindung 3 der aus dem starren zylindrischen Kern 4 und dem elastischen Schlauchstück 5 bestehende Dehnkörper eingeführt. Die Stirnenden 6 des Schlauchstückes 5 sind mit dem Umfang des Kernes 4 fest verbunden. Der Kern weist den an eine nicht dargestellte Druckluftleitung angeschlossenen Kanal 8 und den Druckluftaustritt 9 auf. Nach dem Einbringen des Dehnkörpers 4, 5 in die Rohrleitung 1 bzw. 2 wird zunächst die den Dehnkörper konzentrisch umgebende Hülse 11 durch Erhitzen der Gewebestreifen 20 in den plastischen Zustand versetzt. Nach Abschalten des Stromes wird dem Kern 4 Druckluft zugeführt. Dadurch wird das Schlauchstück 5 aufgeweitet, welches dadurch die plastisch gewordene Hülse U und den Schlauchabschnitt 22 mit dem Abdichtungsmittel 14 an die Rohrinnenwand anpreßt. Dabei verteilt sich die Abdichtungsmasse und dringt zum Teil in die Muffenspalte ein. Nach dem Abkühlen der Hülse 11, welches an ruhender Luft oder durch die Einwirkung der Druckluft erfolgen kann, ist die Hülse 11 verfestigt. Sie verbleibt infolge ihrer Eigenspannung als abdichtendes Element
an der Rohrinnenwand. Der Dehnkörper 4,5 wird dann entlastet und aus der Rohrleitung herausgezogen.
Die an den Stirnenden des Schlauchabschnittes 22 angeordneten Dichtungsringe 23 verhindern ein seitliches Austreten der Dichtungsmasse 14 und unterstützen die Abdichtung gegen austretendes Gas.
Hierzu 2 Blatt Zeichnungen

Claims (3)

Patentansprüche:
1. Vorrichtung zur Durchführung eines Verfahrens zum inneren Abdichten von Rohrmuffenverbindungen, insbesondere der Stemmuffenverbindungen von Erdgasleitungen, nach Patent 24 40 086.0, wobei ein das Abdichtungsmittel tragender hohlzylindrischer und elastischer Dehnkörper in die Rohrleitung eingebracht, und das Abdichtungsmittel durch Aufweiten des Dehnkörpers mittels Zufuhr von Druckluft an den inneren Ringspalt der Muffenverbindung angepreßt wird, wobei eine das Abdichtungsmitte! tragende und den Dehnkörper umgebende Hülse aus thermoplastischem Kunststoff, vorzugsweise Polyvinylchlorid, durch elektrische Widerstandserhitzung auf Erweichungstemperatur erwärmt, dann mit dem Abdichtungsmittei an die Rohrinnenwand angepreßt und anschließend im angepreßten Zustand bis zur Verfestigung abgekühlt wird, worauf der Dehnkörper aus der Rohrleitung entfernt wird, dadurch gekennzeichnet, daß für die Erhitzung der Hülse (11) ein elektrisch leitendes Textilgewebe dient, welches in Form von mehreren dicht aneinanderliegenden Längsstreifen (20) die Hülse (11) eng umhüllt oder an deren innenwand angeordnet ist, und in den aneinanderstoßenden Längskanten der Gewebestreifen an eine Stromquelle angeschlossene Drähte oder metallische Folienstreifen (21) eingelagert sind, und daß die )0 Gewebestreifen (20) von einem dünnen, dehnfähigen Schlauchabschnitt (22) umhüllt sind, auf welchem das Abdichtungsmittel (14) angeordnet ist.
2. Vorrichtung nach Anspruch 1, gekennzeichnet durch ein an sich bekanntes Textilgewebe mit einer ^ Einlagerung von elektrisch leitfähigem Graphit-, Metall- od. dgl. Pulver.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der die Gewebestreifen (20) umhüllende Schlauchabschnitt (22) aus einem elektrisch isolierenden Werkstoff, wie Gummi, thermoplastischem Kunststoff od. dgl. besteht.
DE2719320A 1977-04-27 1977-04-27 Vorrichtung zum inneren Abdichten von Rohrmuffenverbindungen Expired DE2719320C2 (de)

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FI840433A (fi) * 1983-02-03 1984-08-04 Coopetanche S.A. Foerfarande foer att beklaeda en tunnel invaendigt, beklaedningsinstallation med anvaendande av detta foerfarande samt tunnlar foersedda med en beklaednad enligt detta foerfarande.
CH673107A5 (de) * 1987-08-28 1990-02-15 Fischer Ag Georg
GB2213230B (en) * 1987-12-28 1992-05-06 Osaka Bosui Kensetsusha Kk Method of lining branch pipe portion of underground main pipe with rigid plastics tube
CH676689A5 (de) * 1988-08-16 1991-02-28 Fischer Ag Georg
US4995761A (en) * 1989-08-23 1991-02-26 Barton Kenneth S Method and apparatus for repairing ruptures in underground conduits
BR9007860A (pt) * 1989-11-21 1992-09-08 Wavin Bv Sela termoplastica em duas partes para reparo ou renovacao de uma tubulacao com tubo derivado e tubo reparado ou renovado com sela
GB8926294D0 (en) * 1989-11-21 1990-01-10 British Gas Plc Method of jointing hollow members by fusion
EP1745917B1 (de) 2005-07-18 2013-03-06 Georg Fischer Wavin AG Elektroschweissmuffe
GB201221034D0 (en) 2012-11-22 2013-01-09 Mantaray Innovations Ltd Flexible pipe coupling
FR3023348B1 (fr) * 2014-07-02 2016-07-15 Saipem Sa Dispositif et procede de mise en place d'un manchon tubulaire de jonction pour conduite comportant un chemisage interne

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3790720B1 (de) * 2018-05-10 2023-09-20 Raytheon Company Verbindungsanordnungssystem mit getaktetem blasensystem

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