WO2013131622A1 - Utilisation d'un matériau polymère - Google Patents

Utilisation d'un matériau polymère Download PDF

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Publication number
WO2013131622A1
WO2013131622A1 PCT/EP2013/000562 EP2013000562W WO2013131622A1 WO 2013131622 A1 WO2013131622 A1 WO 2013131622A1 EP 2013000562 W EP2013000562 W EP 2013000562W WO 2013131622 A1 WO2013131622 A1 WO 2013131622A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
layer
polymer material
sigma
multilayer
Prior art date
Application number
PCT/EP2013/000562
Other languages
German (de)
English (en)
Inventor
Guido Kania
Volker Liebel
Original Assignee
Rehau Ag + Co
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 Rehau Ag + Co filed Critical Rehau Ag + Co
Publication of WO2013131622A1 publication Critical patent/WO2013131622A1/fr

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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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/143—Pre-insulated pipes
    • 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
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D10/00—District heating systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17—District heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]

Definitions

  • the invention relates to the use of a polymer material for producing a layer of a multilayer pipe or a layer of a multilayer pipe molding, a process for producing a multilayer pipe or a multilayer molding and the multilayer pipe or multilayer pipe molding produced by the method.
  • district heating pipes are used, which are able to direct the flowing in the pipes heated fluid over very long distances to the consumers, without causing significant heat energy losses.
  • the pipes are thermally insulated.
  • a very common technique to produce such district heating pipes is to produce a medium pipe, for example of PE-X with one or more foam layers of an expanded polymer material such as PE-X or polyethylene (PE) or polypropylene (PP), which form the insulation.
  • a medium pipe for example of PE-X with one or more foam layers of an expanded polymer material such as PE-X or polyethylene (PE) or polypropylene (PP), which form the insulation.
  • Such a prefabricated package of medium pipe and foam layers is then drawn into a prefabricated flexible corrugated pipe.
  • To connect these district heating pipes with each other pipe fittings are required, as well as to produce, for example, branches and side connections.
  • Such known from the prior art district heating pipes are expensive to produce, because of the many steps to be carried out error-prone and difficult to connect to each other, since in cross-linked polyethylene is only a limited weldability or steel is a considerable effort to produce a welded connection to operate.
  • Polymer material which met the high demands that are placed on district heating pipes, select and provide for the production of a pipe or a pipe fitting for a pipe assembly of a district heating network.
  • Polymer material in a simple manner be welded, so as to be able to make connections.
  • Ig t - 219 - (62600.752 x Ig sigma) / T + 90635.353 / T + 126.387 x I
  • a multilayer pipe or a multilayer pipe molding each with at least one layer of said polymer material for a pipe arrangement of a district heating network.
  • Such a tube or tubular molding can be produced in a simple manner, causes low production costs, is durable, withstands the prevailing pressures and temperatures of the medium conveyed in them over long periods of time, and can be connected to one another by welding techniques in a simple manner.
  • such a pipe or pipe fitting resists the conditions under which a district heating network is operated. These include the permanent action of the fluid under temperature and pressure on the wall of polymer material, pressure peaks and fluctuations as well as temperature peaks and fluctuations. Likewise, the expansion behavior of the material has to be taken into account, which is decisively influenced by temperature and pressure. Finally, a durable material is needed because a district heating network should have a long life.
  • the polymer material is a polyethylene.
  • a polyethylene is a very easily processable polymer material that can be used in both
  • Extrusion as well as injection molding process is processed to produce pipes or pipe fittings.
  • a polyethylene is inert, durable and is not attacked by the conductive fluids when used in a district heating network, moreover, it is conveniently available. It has proved to be very advantageous in the context of the invention if the innermost, i. the lumen of the tube or pipe molding facing layer of the
  • Polymer material as described above, is formed.
  • This innermost layer of the pipe or pipe molding comes into contact with the medium to be conductive.
  • At least one barrier layer is arranged on the side facing away from the lumen or in the layer of polymer material.
  • Such a barrier layer prevents or reduces to a very high degree the passage of substances from the environment into the lumen of the tube or out of the lumen of the tube into the environment.
  • barrier layer is used as the barrier layer, which prevents or limits the passage of water vapor and / or the passage of oxygen.
  • a thermal barrier coating is disposed on the layer of polymer material or on the barrier layer.
  • a thermal barrier coating may for example consist of a polymer foam material, wherein the polymer is a polypropylene foam, a polyurethane foam is a foam of crosslinked or uncrosslinked polyethylene or the like.
  • the polymeric material is physically or chemically foamed with a gas.
  • the polymer foam produced in this way can be open-celled or closed-celled.
  • the thermal barrier coating can be multi-layered. It is also multi-layered constructions which also include alternative insulating layer materials, such as e.g. Airgel, included, can be produced.
  • the material of the thermal barrier coating it is preferred to choose one which shows no failure, no degradation or similar changes with respect to the temperature of the medium to be conducted.
  • the thickness of the thermal barrier coating is chosen so that the desired thermal insulation effect occurs.
  • a diffusion barrier layer to be arranged on the side of the thermal barrier coating facing away from the lumen of the pipe or pipe fitting.
  • a diffusion barrier layer arranged there on the thermal barrier coating is suitable for protecting the thermal barrier coating from the ingress of substances from the environment.
  • the diffusion barrier layer can also prevent substances from the thermal barrier coating from entering the environment.
  • the diffusion barrier layer is designed so that gases from the polymer foam, which forms the thermal barrier coating, do not diffuse outwards into the environment, but remain in the thermal barrier coating and thereby maintain the effectiveness of the thermal barrier coating.
  • a protective layer is arranged, which forms the outermost layer of the pipe or pipe molding.
  • a highly resistant pipe or pipe molding can be made, which ensures a high resistance to damage during storage, transport and installation of the pipes or pipe fittings.
  • the protective layer can be corrugated or smooth, furthermore it can be provided that the protective layer consists of a polyethylene (PE) or a polyethylene with increased resistance to tearing or a cross-linked polyethylene (PE-X) or similar resistant materials is made.
  • PE polyethylene
  • PE-X cross-linked polyethylene
  • adhesion promoter layer is arranged between two of the abovementioned layers.
  • An adhesive layer causes a particularly strong bond between two adjacent layers, so that an adhesive bond is formed. It is also included in the invention that adhesion promoter layers are formed between all adjoining layers.
  • a method for producing a multilayer pipe or multilayer molding for a pipe arrangement of a district heating network is provided for this purpose. wherein at least one layer of the multilayer pipe or the multilayer molded part of a polymer material which is an uncrosslinked polyolefin and has an internal pressure resistance in an internal pressure test according to ISO 1 167-1 and ISO 1167-2, on or above a reference curve in the temperature range of 10 to 110 ° C, which corresponds to the following definition:
  • Ig t - 219 - (62600.752 x Ig sigma) / T + 90635.353 / T + 126.387 x Ig sigma
  • t is the time in hours (h)
  • T is the temperature in Kelvin (K)
  • sigma for the hydrostatic stress is expressed in megapascals (MPa).
  • Such a method for producing a multilayer pipe or multilayer pipe molding may be selected as an extrusion process or as an injection molding process or as a blowing process or as an in-line fabrication process or as a combined process from the above.
  • a multilayer pipe or a multilayer pipe molding according to the above description can be produced in a favorable manner.
  • the method is carried out such that at least one barrier layer is arranged on or in the layer of polymer material.
  • Arranging a barrier layer on or in the layer of polymer material can be realized in a simple manner in an extrusion process or coextrusion process or in an injection molding process.
  • a thermal barrier coating is arranged and a diffusion barrier layer is arranged on the side of the thermal barrier coating facing away from the lumen of the pipe or pipe fitting.
  • Polymer material according to the above description also a heat-insulating layer and on the side facing away from the lumen of the tube or pipe molding side of the thermal insulation layer a diffusion barrier layer is particularly advantageous and favorable.
  • the object of providing a multilayer pipe or multilayer pipe molding is solved by claim 10.
  • the problem is solved by the method described above, a multilayer pipe or multilayer pipe molding is accessible in a simple manner.
  • a multi-layer tubular shaped part is understood as meaning, for example, a pipe bend, a branch pipe, a T-piece, a sleeve or an electric welding sleeve, without this enumeration being conclusive.
  • An electric welding sleeve is particularly suitable for connecting pipes with each other or pipes and pipe fittings or pipe fittings with each other.
  • an electric welding sleeve can be formed so that they can accommodate a pipe, two pipes, three pipes or four pipes and connect with each other or with one or more pipe fittings.
  • a pipeline consisting of pipes or pipe parts according to the present invention is particularly advantageous when the connection between the pipes or pipe fittings is made by butt welding.
  • Fig. 3 shows a longitudinal section through a T-piece along the axis.
  • Fig. 4 is a longitudinal section through an electric welding sleeve along the axis.
  • a tube 1 is shown in a longitudinal sectional view along the axis.
  • the multilayer pipe 1 has a lumen 7 bounded by a layer 2 made of polymer material.
  • the thermal barrier coating 4 is preferably made of a foamed polymeric material.
  • the thermal barrier coating 4 has a diffusion barrier layer 5 on its side facing away from the lumen 7 of the tube 1. As the outermost layer of the tube 1, a protective layer 6 is disposed adjacent to the diffusion barrier layer 5.
  • FIG. 2 shows a longitudinal section through a pipe bend 1 'along its axis.
  • the pipe bend V is a pipe molding which allows a connection of not shown here pipes 1, 1 with a certain angle, in the present case about 90 °.
  • the lumen 7 of the pipe bend 1 ' is bounded by a multilayer wall, wherein the structure is analogous, as described above under Fig. 1.
  • Fig. 3 shows a T-piece 1 "in a longitudinal sectional view along the axis.
  • T-piece 1 " With a T-piece 1 ", it is possible to pipe 1, 1 or pipe fittings 1 ', 1", 1 "' to each other.
  • the lumen 7 of the T-piece 1 is bounded by a multilayer wall whose structure is already known in principle from the description of FIG. 1.
  • An electric welding sleeve 1 "' is suitable to connect pipes 1, 1 or pipe fittings 1', 1", 1 "', wherein the welding process is initiated by applying an electrical voltage, whereby in the interior of the electric welding sleeve" by a heating wire
  • Polymer material is melted, which produces the welded joint.
  • the lumen 7 of the electric welding sleeve 1 "' is in this case limited by a multilayer wall whose structure has already been explained in the description of FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

L'invention concerne l'utilisation d'un matériau polymère, lequel est une polyoléfine non réticulée et présente, lors d'un contrôle de la pression interne selon les normes ISO 1167-1 et ISO 1167-2, une résistance à la pression interne qui se situe sur ou au-dessus d'une courbe de référence dans la plage de température allant de 10 à 110°C, qui correspond à la définition suivante : Ig t = - 219 - (62600,752 x Ig sigma) / T + 90635,353 / T + 126,387 x Ig sigma, t représentant le temps en h, T représentant la température en K et sigma représentant la tension hydrostatique en MPa, pour la fabrication d'au moins une couche d'un tube multicouche (1) ou d'au moins une couche d'une pièce moulée tubulaire multicouche (1', 1", 1"') pour un ensemble de tubes d'un réseau de chauffage à distance.
PCT/EP2013/000562 2012-03-06 2013-02-27 Utilisation d'un matériau polymère WO2013131622A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012101854A DE102012101854A1 (de) 2012-03-06 2012-03-06 Verwendung eines Polymermaterials
DE102012101854.5 2012-03-06

Publications (1)

Publication Number Publication Date
WO2013131622A1 true WO2013131622A1 (fr) 2013-09-12

Family

ID=47891574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/000562 WO2013131622A1 (fr) 2012-03-06 2013-02-27 Utilisation d'un matériau polymère

Country Status (2)

Country Link
DE (1) DE102012101854A1 (fr)
WO (1) WO2013131622A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09226075A (ja) * 1996-02-22 1997-09-02 Toyo Polymer Kk 多層パイプの製造法
WO2003020821A1 (fr) * 2001-08-31 2003-03-13 Dow Global Technologies Inc. Materiau de polyethylene multimodal
EP1355103A1 (fr) * 2002-04-05 2003-10-22 Lögstör Rör A/S Tuyau pré-insulé
DE102004059677A1 (de) * 2003-12-12 2005-09-15 Hraschan, Jakob Thermisch isolierte Rohrleitung
EP1927627A1 (fr) * 2006-12-01 2008-06-04 Borealis Technology Oy Tuyau possédant une résistance haute température améliorée
EP2340929A1 (fr) * 2009-12-23 2011-07-06 isoplus Fernwärmetechnik GmbH Tube d'enveloppement en plastique et son procédé de fabrication

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3200441A1 (de) * 1982-01-09 1983-08-04 Felten & Guilleaume Energietechnik GmbH, 5000 Köln Flexibles fernwaermeleitungs-verbundrohr
EP1010933A1 (fr) * 1998-12-16 2000-06-21 BRUGG Rohrsysteme GmbH Conduite isolée thermiquement
DE10062272A1 (de) * 2000-12-14 2002-06-20 Solvay Verfahren zur Herstellung von Rohren oder Formteilen"

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09226075A (ja) * 1996-02-22 1997-09-02 Toyo Polymer Kk 多層パイプの製造法
WO2003020821A1 (fr) * 2001-08-31 2003-03-13 Dow Global Technologies Inc. Materiau de polyethylene multimodal
EP1355103A1 (fr) * 2002-04-05 2003-10-22 Lögstör Rör A/S Tuyau pré-insulé
DE102004059677A1 (de) * 2003-12-12 2005-09-15 Hraschan, Jakob Thermisch isolierte Rohrleitung
EP1927627A1 (fr) * 2006-12-01 2008-06-04 Borealis Technology Oy Tuyau possédant une résistance haute température améliorée
EP2340929A1 (fr) * 2009-12-23 2011-07-06 isoplus Fernwärmetechnik GmbH Tube d'enveloppement en plastique et son procédé de fabrication

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Publication number Publication date
DE102012101854A1 (de) 2013-09-12

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