WO2008113805A1 - Conduite sous pression - Google Patents

Conduite sous pression Download PDF

Info

Publication number
WO2008113805A1
WO2008113805A1 PCT/EP2008/053231 EP2008053231W WO2008113805A1 WO 2008113805 A1 WO2008113805 A1 WO 2008113805A1 EP 2008053231 W EP2008053231 W EP 2008053231W WO 2008113805 A1 WO2008113805 A1 WO 2008113805A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
inner layer
locking device
outer layer
pressure pipe
Prior art date
Application number
PCT/EP2008/053231
Other languages
German (de)
English (en)
Inventor
Jürgen Scharkowski
Original Assignee
Steuler Industriewerke Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Steuler Industriewerke Gmbh filed Critical Steuler Industriewerke Gmbh
Publication of WO2008113805A1 publication Critical patent/WO2008113805A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/28—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers

Definitions

  • the invention relates to pressure pipes, in particular large-sized pressure pipes, and a corresponding manufacturing method.
  • the prior art is further referred to DE 42 37 477 C2, DE 198 41 121 Al and DE 88 03 049 Ul.
  • the object of the invention is to provide an improved penstock and a corresponding manufacturing method, which minimizes the number of connecting seams and improves or facilitates the safety of the connection of pipe sections. Next, the durability of penstocks is to be increased.
  • the invention is based on the basic idea of arranging a supporting outer layer on a preferably extruded and particularly preferably seamless inner layer.
  • the inner layer comprises a thermoplastic material, preferably polypropylene (PP), and the outer layer glass fiber reinforced plastic (GRP) on; to ensure the connection between inner layer and outer layer, a lamination layer is arranged. This is particularly useful when the thermal expansion coefficients of the materials used for the inner layer and the outer layer are different. Due to the preferably seamless inner layer, connecting seams are produced only at the beginning or at the end of a pipe section during the assembly of pipe sections.
  • the invention is based on the basic idea of forming the inner layer, which is decisive for the tightness of the pressure pipeline, with a sufficient layer thickness in order to be able to ensure high quality in the connection of pipe sections, even with minimal axial displacement of the pipe sections relative to one another.
  • the layer thickness of the inner layer (material thickness of the inner tube) and the durability of the penstock is improved.
  • a locking device is provided on the outside of the inner layer in order to improve the connection to the outer layer arranged thereon.
  • Figure 1 is a pressure pipe according to the invention
  • Figure 2 shows a layer structure of a pressure pipe according to the invention.
  • Figure 1 shows a pressure pipe according to the invention with a supporting outer layer 1, which is arranged on an inner tube or an inner layer 2.
  • the outer layer 1 comprises glass fiber reinforced plastic (GRP) and the inner layer 2 comprises a thermoplastic material, preferably polypropylene (PP), on.
  • GRP glass fiber reinforced plastic
  • PP polypropylene
  • a lamination layer 3 is preferably arranged, which is shown in the figures with a dotted line.
  • the cladding layer 3 preferably comprises glass fibers, particularly preferably glass fiber webs or mats. Depending on the requirements of the materials used for the outer layer 1 and the inner layer 2, preferably E-glass fibers or corrosion-resistant ECR glass fibers are used.
  • the lamination layer 3 additionally comprise polyester. By laminating layer 3, a permanent connection between the inner layer 2 and the outer layer 1 is ensured.
  • the inner layer 2 is formed with a layer thickness of at least 7 mm, preferably in the range of 10 mm - 20 mm and particularly preferably 15 mm.
  • a secure connection can be produced even with a slight off-axis offset of the tube pieces, for example due to inaccuracy in the assembly, since the area of the collisions encountered or the overlapping area is sufficient.
  • a compound is preferably made by known welding methods.
  • the inner layer 2 preferably has a locking device 4.
  • the locking device 4 is arranged on the outside of the inner layer 1 facing the outer layer 1 in order to improve the connection between outer layer 1 and inner layer 2.
  • a temperature-induced change in volume of the inner layer 2 in relation to the outer layer 1 so occurring forces can be conducted into the supporting outer layer 1.
  • Various expansions of the outer layer 1 and the inner layer 2 are caused by the different temperature coefficients of the materials preferably used and by a delayed heat flow through the layers. For example, if a hot fluid passed through the pipe, the outer layer 1 is only with a certain Time delay relative to the inner layer 2 experience a temperature increase.
  • the lamination layer 3 is preferably arranged on the entire surface of the outside layer 1 facing the outside of the inner layer 2 and / or the locking device 4. As shown in FIG. 2, the locking device 4 can also have no laminating layer 3 on the side facing the outer layer 1.
  • the locking device 4 preferably has PP and is particularly preferably formed integrally with the inner layer 2. Alternatively, the locking device 4 can be subsequently arranged on the inner layer 2.
  • the locking device 4 may have various shapes, as shown by way of example in FIG.
  • the locking device may for example be trapezoidal, cuboid or hemispherical in cross section.
  • the locking device 4 extends continuously in a spiral shape in the axial direction on the inner layer 2.
  • one or more circular or other shaped locking device 4 can be arranged on the inner layer 2.
  • a laminating layer 3 and an outer layer 1 are arranged on an inner layer 2 in this order.
  • the cladding layer 3 is preferably applied to the outside of the inner layer 2 in such a way that at least part of the cladding layer 3 is at least partially in the inner layer
  • the inner layer 2 is preferably a seamless tube, preferably with a locking device 4, as above described.
  • the outer layer 1 is arranged on the inner layer 2 or the laminating layer 3, for example by winding a glass fiber mat impregnated with synthetic resin or by alternately applying glass fiber mats and synthetic resin. The outer layer 1 is thus firmly connected to the inner layer 2 at least via the laminating layer 3.
  • the outer layer 1 is applied to the outside of the inner layer 2 or the laminating layer 3, at least by the liquid or deformable synthetic resin of the outer layer 1, a positive connection with the laminating layer 3 or with the inner layer 2 is produced.
  • the glass fibers may not completely adapt to the surface of the inner layer 2 and the lamination 3, whereas the liquid or deformable resin all possible spaces between the outer layer 1 and the lamination layer 3 and Inner layer 2 fills.
  • a positive connection of the inner layer 2 with the outer layer 1 can also be achieved if the cross section of the optional locking device 4 has a shape which tapers at least partially towards the inner layer 2, as shown by way of example in FIG. 2 with a trapezoidal shape.
  • the outer layer 1 forms after curing of the synthetic resin a stable, supporting layer, which gives the inner layer 2 a corresponding rigidity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne des conduites sous pression avec une couche externe portante (1) et une couche interne (2), la couche externe (1) comprenant une matière plastique renforcée de fibres de verre et la couche interne (2) une matière plastique thermoplastique, de préférence du polypropylène. Une couche de masquage (3) est disposée entre la couche externe (1) et la couche interne (2). L'invention concerne en outre un procédé de fabrication correspondant. La conduite sous pression selon l'invention permet de minimiser le nombre de soudures et d'améliorer la sécurité de l'assemblage des tronçons de conduite lors du montage final.
PCT/EP2008/053231 2007-03-19 2008-03-18 Conduite sous pression WO2008113805A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710013061 DE102007013061A1 (de) 2007-03-19 2007-03-19 Druckrohrleitung
DE102007013061.0 2007-03-19

Publications (1)

Publication Number Publication Date
WO2008113805A1 true WO2008113805A1 (fr) 2008-09-25

Family

ID=39496052

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/053231 WO2008113805A1 (fr) 2007-03-19 2008-03-18 Conduite sous pression

Country Status (2)

Country Link
DE (1) DE102007013061A1 (fr)
WO (1) WO2008113805A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9970575B2 (en) 2012-09-28 2018-05-15 Dow Global Technologies Llc Composition, tape and composite pipe made therefrom and a method of producing composite pipe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010017471B4 (de) * 2010-06-18 2014-07-10 Peter Leitholf Schwimmhilfe für Taucher
DE102016216605A1 (de) * 2016-09-02 2018-03-08 Contitech Schlauch Gmbh Schlauchleitung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1479111A1 (de) * 1965-06-04 1969-05-29 Dynamit Nobel Ag Verfahren zur Herstellung zwei- oder mehrschichtiger Formteile
DE4237477A1 (de) * 1992-11-06 1994-05-11 Gewerk Keramchemie Rohrförmiges Bauteil mit einer Lecküberwachungseinrichtung und Verfahren zu seiner Herstellung
DE19841121A1 (de) * 1998-09-09 2000-03-16 Gewerk Keramchemie Verbundrohr aus Kunststoff
EP1333210A1 (fr) * 2002-01-25 2003-08-06 SGL Acotec GmbH Tuyau composite avec une couche intérieure en PTFE avec une couche supérieure renforcé par des fibres
WO2006001862A2 (fr) * 2004-06-09 2006-01-05 3M Innovative Properties Company Articles composites et procedes de fabrication desdits articles

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8803049U1 (fr) * 1987-09-17 1988-05-19 Schmelzbasaltwerk Kalenborn - Dr.-Ing. Mauritz Gmbh & Co Kg, 5461 Vettelschoss, De

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1479111A1 (de) * 1965-06-04 1969-05-29 Dynamit Nobel Ag Verfahren zur Herstellung zwei- oder mehrschichtiger Formteile
DE4237477A1 (de) * 1992-11-06 1994-05-11 Gewerk Keramchemie Rohrförmiges Bauteil mit einer Lecküberwachungseinrichtung und Verfahren zu seiner Herstellung
DE19841121A1 (de) * 1998-09-09 2000-03-16 Gewerk Keramchemie Verbundrohr aus Kunststoff
EP1333210A1 (fr) * 2002-01-25 2003-08-06 SGL Acotec GmbH Tuyau composite avec une couche intérieure en PTFE avec une couche supérieure renforcé par des fibres
WO2006001862A2 (fr) * 2004-06-09 2006-01-05 3M Innovative Properties Company Articles composites et procedes de fabrication desdits articles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9970575B2 (en) 2012-09-28 2018-05-15 Dow Global Technologies Llc Composition, tape and composite pipe made therefrom and a method of producing composite pipe

Also Published As

Publication number Publication date
DE102007013061A1 (de) 2008-09-25

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