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DE1271471B - Verfahren zum Einbringen eines Innenrohres in ein Mantelrohr durch Einschwimmen - Google Patents

Verfahren zum Einbringen eines Innenrohres in ein Mantelrohr durch Einschwimmen

Info

Publication number
DE1271471B
DE1271471B DEP1271A DE1271471A DE1271471B DE 1271471 B DE1271471 B DE 1271471B DE P1271 A DEP1271 A DE P1271A DE 1271471 A DE1271471 A DE 1271471A DE 1271471 B DE1271471 B DE 1271471B
Authority
DE
Germany
Prior art keywords
inner tube
pipe
jacket
tube
liquid
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.)
Pending
Application number
DEP1271A
Other languages
English (en)
Inventor
Dipl-Ing Eth Gera Wittgenstein
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.)
ETH GERARD FRANCIS WITTGENSTEI
Original Assignee
ETH GERARD FRANCIS WITTGENSTEI
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 US14143A external-priority patent/US3038198A/en
Application filed by ETH GERARD FRANCIS WITTGENSTEI filed Critical ETH GERARD FRANCIS WITTGENSTEI
Publication of DE1271471B publication Critical patent/DE1271471B/de
Pending 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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/00051—Accessories for dressings
    • A61F13/00072—Packaging of dressings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/26—Perforating by non-mechanical means, e.g. by fluid jet
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/747—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means
    • B29C65/7471—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means using a fluid, e.g. hot gases
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0246—Cutting or perforating, e.g. burning away by using a laser or using hot air
    • 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
    • B29C66/40—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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • 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
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7377—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73771—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being amorphous
    • B29C66/73772—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being amorphous the to-be-joined areas of both parts to be joined being amorphous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7377—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73773—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being semi-crystalline
    • B29C66/73774—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being semi-crystalline the to-be-joined areas of both parts to be joined being semi-crystalline
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7377—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
    • B29C66/73775—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being crystalline
    • B29C66/73776—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being crystalline the to-be-joined areas of both parts to be joined being crystalline
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
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Description

  • Verfahren zum Einbringen eines Innenrohres in ein Mantelrohr durch Einschwinunen Die Erfindung betrifft ein Verfahren zum Einbringen eines Innenrohres in ein Mantelrohr durch Einschwimmen.
  • Doppelwandige Rohrleitungen werden häufig für den Transport von Kohlenwasserstoffen benötigt, um ein Höchstmaß an Sicherheit gegen das Auslaufen von Kohlenwasserstoff in die Grundgewässer zu gewährleisten.
  • Aus ökonomischen Gründen stellt man die großen Rohrleitungen aus Abschnitten von möglichst großer Länge zusammen, um Verbindungsstellen oder Stoßstellen nur in relativ großen Abständen zu haben. Hierbei bereitet jedoch das Einbringen des Innenrohres in das Mantelrohr große Schwierigkeiten, da die Anordnung unhandlich ist und der Zwischenraum zwischen den beiden Rohren nicht so groß ist, daß man beliebige Transporteinrichtungen oder Rolleinrichtungen in den Zwischenraum einbringen kann.
  • Es ist bekannt, in den Fällen, in denen für den Durchlaß von Wasserläufen unter künstlichen Wasserstraßen oder sonstigen Verkehrswegen eiserne Durchlässe in Form von Rohren und Dükern eingebaut werden, ein schadhaftes Rohr nicht einfach zu ersetzen, sondern in dieses Durchlaßrohr ein neues Rohr von etwas geringerem Durchmesser einzubringen und den Zwischenraum mit Beton od. dgl. auszugießen. Um eine Montage des Innenrohres an Ort und Stelle zu vermeiden, ist es hierbei schon bekannt, das neue Durchlaßrohr am Ufer des Wasserlaufs vorzufertigen, zeitweilig an den Enden mit abnehmbaren Deckeln zu verschließen und in den Flußlauf zum Aufschwimmen zu bringen. Dabei kann die Eintauchtiefe des vorgefertigten Rohres durch eingefüllten Ballast und teilweises Aufstauen des Wassers im Flußlauf einreguliert werden. Auf diese Weise läßt sich das neue Durchlaßrohr ohne große Schwierigkeiten in den auszubessernden Durchlaß einschwimmen und dort festlegen. Es handelt sich hierbei im wesentlichen um das gleiche Verfahren, das auch bei sonstigen Arbeiten in Flußläufen angewendet wird, z. B. das Einschwimmen von Senkkästen beim Brückenbau od. dgl.
  • Die Erfindung geht aus von diesem bekannten Verfahren zum Einbringen eines Innenrohres in ein Mantelrohr, bei dem das leere, zumindest an einem Ende verschlossene Innenrohr in das mit einer Flüssigkeit, insbesondere Wasser, teilweise gefüllte Mantelrohr schwimmend eingeschoben wird. Erfindungsgemäß wird dieses Verfahren angewandt zum Herstellen von transportablen doppelwandigen Rohrleitungsabschnitten, wobei zunächst das vorgefertigte Mantelrohr in ein vorbereitetes grabenförmiges Flüssigkeitsbecken eingebracht oder wenigstens teilweise geschlossen und mit Flüssigkeit gefüllt wird, bevor das Innenrohr zum Aufschwimmen gebracht wird.
  • Während es bei dem bekannten Verfahren von vornherein notwendig ist, die Arbeiten darauf auszurichten, daß die Gegenstände auf dem Wasser des Flußlaufes schwirrend unterstützt werden, ist das Verfahren gemäß der Erfindung zum Herstellen von doppelwandigen Leitungsrohren völlig unabhängig von irgendwelchen Flußläufen od. dgl. Es wird hier künstlich ein ähnlicher Zustand erzielt, wie er bei dem bekannten Verfahren bei Arbeiten auf Wasserläufen vorliegt. Zu diesem Zweck wird entweder ein künstliches Wasserbecken in Form eines Grabens hergestellt, in welchem jeweils das Mantelrohr vor dem Einbringen eines Innenrohres eingebracht und eingetaucht wird, worauf das Innenrohr eingeschwommen werden kann, oder es wird der gewünschte Zustand zum Aufschwimmen des Innenrohres innerhalb des Mantelrohres selbst geschaffen, indem dieses entweder einseitig oder beidseitig geschlossen und mit einem geregelten Flüssigkeitsstand versehen wird. Im ersteren Fall schwimmt das Innenrohr über seine ganze Länge auf, bevor es in das Mantelrohr eingebracht wird. In. den anderen beiden Fällen schwimmt dagegen nur derjenige Teil des Innenrohres in dem Mantelrohr auf, der bereits in das Mantelrohr hineinragt. Der außerhalb des Mantelrohres verbleibende Teil des Innenrohres kann dabei auf Rollen oder dergleichen Gleiteinrichtungen mechanisch abgestützt werden.
  • Wenn kein künstliches Wasserbecken verwendet wird, kann das Mantelrohr vor dem Einschwimmen des Innenrohres in seiner Längsrichtung geneigt angeordnet, am tiefer liegenden Ende vorübergehend geschlossen und dann mit Flüssigkeit gefüllt werden, worauf das Innenrohr in dem Mantelrohr zum Aufschwimmen gebracht wird. Wenn eine entsprechende Neigung des Mantelrohres nicht möglich ist, muß das Mantelrohr zweckmäßigerweise an beiden Enden vorübergehend geschlossen werden, wobei vom einen Ende her der Wasserstand im Mantelrohr - vorzugsweise selbsttätig - auf einen festen Wert eingestellt und vom anderen Ende her unter Verwendung einer Gleitdichtung das Innenrohr eingeschwommen wird.
  • Das neue Verfahren kann auch bei Rohrkrümmungen angewendet werden, wenn dafür gesorgt wird, daß die Krümmungen kreisförmig verlaufen.
  • Ausführungsbeispiele der Erfindung werden nachfolgend an Hand der Zeichnungen erläutert. Es zeigen F i g.1 und 2 in Seitenansicht zwei Phasen des Verfahrens, F i g. 3 einen Schnitt entlang der Linie y-y durch die Anordnung nach F i g. 2, F i g. 4 das vordere teilweise aufgeschnittene Ende des Innenrohres in einer anderen Ausführungsform und F i g. 5 eine Phase des Verfahrens bei waagerechtem Mantelrohr.
  • In den F i g. 1 bis 4 ist die Herstellung eines Doppelrohres gezeigt, bei der ein Graben vorgesehen ist, der gegenüber der Horizontalen geneigt verläuft. , In dem Graben soll die Rohrleitung verlegt werden.
  • In F i g.1 ist links das Ende eines bereits fertiggestellten Rohrleitungsabschnittes dargestellt, der aus einem Mantelrohr eo und einem Innenrohr c. besteht und über dessen Ende eine Verbindungsmuffe 6 geschoben ist, die zum Anschluß des nächsten Abschnitts dient. Von dem nächsten Abschnitt ist das Mantelrohr ei in Schrägstellung gegenüber der Horizontalen in dem Graben 4 angeordnet, an dem tiefer liegenden Ende mit einem Deckel 7 verschlossen und mit einer Wasserfüllung 5 versehen, deren Spiegel durch das offene, höher liegende Ende des Mantelrohres bestimmt wird. Im Anschluß an das höher liegende Ende des Mantelrohres ist ein Innenrohr ei auf Rollen 2 gelagert. Die Rollen 2 befinden sich in Rollböcken 12, die nach F i g. 3 mit Spitzen 13 in der Sohle des Grabens verankert sind und auf Bogenführungen 15 die kugelförmigen Rollen 2 aufnehmen.
  • Das Innenrohr ist am tiefer liegenden Ende durch einen Deckel f verschlossen. Am höher liegenden Ende ist ein Befestigungselement für die Längsbewegung des Innenrohres steuernde Seile 3 vorgesehen.
  • Wenn das Innenrohr in Richtung auf das Mantelrohr verschoben wird, taucht sein geschlossenes Ende in die Wasserfüllung 5 des Mantelrohres ein und wird dabei durch Aufschwimmen angehoben. Um dabei eine zu starke Durchbiegung des Innenrohres zu vermeiden, ist vorgesehen, während des Einschwimmens das Innenrohr ei mit Ballast zu versehen. Zu diesem Zweck ist von dem höher gelegenen, offenen Ende des Innenrohres her ein Schlauch 8 eingeführt, der bis nahe an das vordere Ende des Innenrohres reicht. Durch diesen Schlauch kann ein flüssiger Ballast in das Innenrohr derart eingeführt werden, daß in Abhängigkeit von der Eintauchtiefe des Innenrohres in die Wasserfüllung 5 das geschlossene Ende des Innenrohres belastet wird.
  • Um zu vermeiden, daß das vordere Ende des Innenrohres ei an der Innenwand des Mantelrohres ei schabt, kann der Deckelf, mit dem das tiefer liegende Ende des Innenrohres ei verschlossen ist, mit einem Kranz von Rollen 10 und 11 versehen sein, durch den das vordere Ende des Innenrohres an der Innenwand des Mantelrohres ei geführt wird.
  • Nach Einführen des Innenrohres ei in das Mantelrohr ei werden die Deckel abgenommen, die Flüssigkeit abgelassen oder abgepumpt und dann die Rohre ei, ei zum Anschluß an das schon vorgefertigte Doppelrohr eo, co gebracht und mit diesem durch die Muffe 6 verbunden. Es kann dann in dem Graben der nächste Rohrabschnitt in der gleichen Weise vorgefertigt und angeschlosen werden, wobei es sich um eine gerade oder eine kreisförmig gekrümmte Rohrleitung handeln kann.
  • Während am Beginn des Einführungsvorgangs das Innenrohr ei noch nahezu unter dem Eigengewicht in das Mantelrohr gleitet, nimmt die Wirkung des Eigengewichts als Vorschubkraft fortlaufend ab, so daß schließlich die Vorschubkraft durch die Seilwinde 3 aufgebracht werden muß.
  • Bei dem Verfahren, von dem eine Phase in F i g. 5 wiedergegeben ist, wird die Rohrleitung in einem Graben 4 verlegt, dessen Sohle etwa horizontal verläuft.
  • In diesem Fall ist das Mantelrohr an beiden Enden zu verschließen, damit in dem Mantelrohr eine Flüssigkeitsfüllung von vorbestimmter Höhe aufrechterhalten werden kann.
  • In F i g. 5 ist rechts das Ende eines bereits fertiggestellten Doppelrohres wiedergegeben, welches aus einem Mantelrohr e. und einem Innenrohr c. und einer Verbindungsmuffe 6 besteht. Das Rohr ist auf Fundamentblöcken 28 abgestützt. Das Innenrohr ist in dem Mantelrohr durch an der Innenfläche des Mantelrohres befestigte Abstandhalter 29 abgestützt.
  • Auf das Ende des Innenrohres c. ist ebenfalls eine Muffe 34 aufgeschoben, die zum Verbinden mit dem anschließenden Innenrohr dient.
  • Bei dem links davon dargestellten anzuschließenden Doppelrohrabschnitt ist das Mantelrohr ei durch einen in seiner Höhe verstellbaren Verschluß 23 verschlossen. Durch diesen Verschluß wird der Pegelstand h der Flüssigkeitsfüllung in dem Mantelrohr ei eingestellt. Dazu ist in der Schieberplatte 24 des Verschlusses 23 eine überlauföffnung 26 vorgesehen, durch welche die Flüssigkeit zu der Ablauföffnung 26 gelangt und deren Höhenlage den Pegelstand der Flüssigkeitsfüllung bestimmt. Das Wasser wird durch eine Leitung 27 zugeführt und abgelassen.
  • Am anderen Ende ist auf das Mantelrohr eine Muffe 20 aufgeschoben, welche auf ihrer Innenseite einen elastischen Balg 21 trägt, der als Gleitdichtung für das Innenrohr dient. Durch diesen Dichtungsbalg wird das Innenrohr ei in das Mantelrohr eingeschoben. Bereits vor dem Einlassen der Flüssigkeit muß das geschlossene Ende des Innenrohres cl durch den Balg ein kleines Stück in das Mantelrohr eingeschoben sein, um die notwendige Abdichtung zu erzielen. Das Balgende trägt eine Ringfeder 22, die das Balgende dicht an dem Umfang des Innenrohres anpreßt.
  • Je eine Schweißnaht des Innenrohres und eine Schweißnaht des Mantelrohres sind bei 30 bzw. 44 angedeutet.
  • Die Abstandhalter 29 sind an der tiefsten Stelle mit Durchgängen 33 versehen, damit das Wasser durchtreten kann.
  • Das Innenrohr wird vor seinem Eintritt in das Mantelrohr durch Rollen 2 unterstützt, welche auf Böcken angeordnet und mittels Spitzen 13 im Boden verankert sind. Zur Höheneinstellung der Rollen 2 ist eine Verstelleinrichtung 32 vorgesehen.

Claims (3)

  1. Patentansprüche: 1. Verfahren zum Einbringen eines Innenrohres in ein Mantelrohr, bei dem das leere, zumindest an einem Ende verschlossene Innenrohr in das mit einer Flüssigkeit, insbesondere Wasser, teilweise gefüllte Mantelrohr schwimmend eingeschoben wird, gekennzeichnet durch die Anwendung zum Herstellen von transportablen, doppelwandigen Rohrleitungsabschnitten, wobei zunächst das vorgefertigte Mantelrohr in ein vorbereitetes grabenförmiges Flüssigkeitsbecken eingebracht oder wenigstens teilweise geschlossen und mit Flüssigkeit gefüllt wird, bevor das Innenrohr zum Aufschwimmen gebracht wird.
  2. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Mantelrohr vor dem Einschwimmen des Innenrohres in seiner Längsrichtung geneigt angeordnet, am tiefer liegenden Ende vorübergehend geschlossen und dann mit Flüssigkeit gefüllt wird und das Innenrohr beim Eintreten in das Mantelrohr zum Aufschwimmen gebracht wird.
  3. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das horizontal angeordnete Mantelrohr vorübergehend an beiden Enden geschlossen und von einem Ende her der Wasserstand im Mantelrohr - vorzugsweise selbsttätig - auf einen festen Wert eingestellt und vom anderen Ende her das Innenrohr unter gleitender Abdichtung eingeschwommen wird. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 617 556; deutsche Auslegesehriften Nr. 1072 440, 1086102; deutsche Gebrauchsmuster Nr. 1836 061, 1843 458; schweizerische Patentschrift Nr. 99 824; britische Patentschrift Nr. 875 224; USA.-Patentschriften Nr. 1886 074, 1911608. In Betracht gezogene ältere Patente: Deutsches Patent Nr. 1143 064.
DEP1271A 1956-01-03 1963-05-28 Verfahren zum Einbringen eines Innenrohres in ein Mantelrohr durch Einschwimmen Pending DE1271471B (de)

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US851053XA 1956-01-03 1956-01-03
US592657A US3012918A (en) 1956-01-03 1956-06-20 Differential heat-sealability in differentially crystalline sheet materials, products made therefrom and process and apparatus for making
US14143A US3038198A (en) 1956-01-03 1960-03-10 Apparatus for perforating thermoplastic sheets
CH1271471X 1962-07-26

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