DE2648294A1 - INSULATION FOR BIG METAL PIPES - Google Patents
INSULATION FOR BIG METAL PIPESInfo
- Publication number
- DE2648294A1 DE2648294A1 DE19762648294 DE2648294A DE2648294A1 DE 2648294 A1 DE2648294 A1 DE 2648294A1 DE 19762648294 DE19762648294 DE 19762648294 DE 2648294 A DE2648294 A DE 2648294A DE 2648294 A1 DE2648294 A1 DE 2648294A1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- insulation
- metal pipes
- thickness
- polyethylene
- 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
Links
- 238000009413 insulation Methods 0.000 title claims description 14
- 239000002184 metal Substances 0.000 title claims description 5
- IHPYMWDTONKSCO-UHFFFAOYSA-N 2,2'-piperazine-1,4-diylbisethanesulfonic acid Chemical compound OS(=O)(=O)CCN1CCN(CCS(O)(=O)=O)CC1 IHPYMWDTONKSCO-UHFFFAOYSA-N 0.000 title 1
- 239000007990 PIPES buffer Substances 0.000 title 1
- 238000005260 corrosion Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920002959 polymer blend Polymers 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
- F16L58/109—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being an extruded layer
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Thermal Insulation (AREA)
Description
/■ ■ t · _ /=■.. - . / / Isolierung für erdverlegte Metallrohre / ■ ■ t · _ / = ■ .. - . / / Insulation for underground metal pipes
Die Erfindung betrifft eine Isolierung für erdverlegte Metallrohre.The invention relates to insulation for underground metal pipes.
Anstelle der bekannten Bitumenisolierung als Korrosionsschutz für Metallrohre setzt sich immer mehr eine Rohrbeschichtung mit einem thermoplastischen Kunststoff durch. Eine derartige Isolierung ist mechanisch erheblich strapazierfähiger, so daß durch die unvermeidliche rauhe Behandlung von Rohren beim Lagern, Transportieren und Verlegen, ja selbst bei Betreiben der Rohrleitung z.B. durch Erdbewegungen die Schutzwirkung einer Isolierung aus einem thermoplastischen Kunststoff im Gegensatz zu einer Bitumenisolierung weniger beeinträchtigt wird.Instead of the well-known bitumen insulation as corrosion protection for metal pipes, pipe coatings are increasingly being used with a thermoplastic plastic. Such insulation is mechanically much more durable, so that due to the unavoidable rough treatment of pipes when storing, transporting and laying, even when operating the pipeline E.g. through earth movements the protective effect of an insulation from a Thermoplastic material is less affected than bitumen insulation.
Normalerweise ist für einen Korrosionsschutz bei Stahl eine thermoplastische Kunststoffschichtdicke von etwa o,8 mm ausreichend. Da thermoplastischer Kunststoff aber bei Dauerbeanspruchung, wie sie bei Verwendung als Isolierung von erdverlegten Rohren durch örtlichen Erd- und Steindruck gegeben ist, einen sogenannten "kalten Fluß" zeigt, ist man dazu übergegangen, die aus thermoplastischem Kunststoff bestehende Rohrschichtdicke zu vergrößern. Eine derart dicke thermoplastische Kunststoffschicht ist allerdings recht kastenträchtig.Normally, for corrosion protection on steel, a thermoplastic one is used Plastic layer thickness of around 0.8 mm is sufficient. As thermoplastic material, however, under constant stress, such as when used as insulation of underground pipes is given by local earth and stone pressure, shows a so-called "cold flow", a move has been made to increase the thickness of the pipe layer made of thermoplastic material. Such a thick thermoplastic plastic layer is, however, quite boxy.
809817/0461809817/0461
-Z--Z-
Der Erfindung liegt die Aufgabe zugrunde, eine Isolierung zu schaffen, die preisgünstig ist und einen höchstmöglichen Schutz gewährleistet.The invention is based on the object of providing insulation that is inexpensive and the highest possible Protection guaranteed.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß zwischen einer an der Rohraußenfläche anliegenden Korrosionsschutzschicht und einer zur Einschränkung von Antrieb dienenden Schicht, eine Schicht mit einem hohen Fiillstoffgehalt angeordnet ist.According to the invention, the object is achieved in that between a corrosion protection layer resting on the outer surface of the pipe and one which is used to restrict the drive Layer, a layer with a high filler content is arranged.
Besonders günstig ist es, wenn die an der Rohraußenfläche anliegende Korrosionsschutzschicht aus Polyäthylen, die Zwischenschicht aus einem Polymeren-Gemisch und die zur Einschränkung von Antrieb dienende Schicht aus Polyäthylen besteht.It is particularly favorable if the anti-corrosion layer made of polyethylene, the intermediate layer, rests on the outer surface of the pipe made of a polymer blend and used to limit propulsion serving layer consists of polyethylene.
Zweckmäßig ist es, wenn die an der Rohraußenfläche anliegende Korrosionsschutzschicht eine Dicke von o,5 bis 1 mm, die Zwischenschicht eine Dicke von 0,8 bis 2 mm und die zur Einschränkung von Antrieb dienende Schicht eine Dicke von o,3 bis 1 nm aufweist.It is useful if the corrosion protection layer lying on the outer surface of the pipe has a thickness of 0.5 to 1 mm, the intermediate layer has a thickness of 0.8 to 2 mm and the layer serving to restrict drive has a thickness of 0.3 to 1 nm.
In der Zeichnung ist ein AusfUhrungsbeispiel der Erfindung gezeigt.The drawing shows an exemplary embodiment of the invention shown.
8Q9817/O&E18Q9817 / O & E1
Mit 1 ist ein Stahlrohr bezeichnet, das mit einer im Extruderverfahren hergestellten Isolierung versehen ist. Die Isolierung besteht aus einer etwa 0,8 mm dicken Korrosionsschutzschicht 2 aus Polyäthylen, einer etwa 1,5 mm dicken Zwischenschicht 3 aus einem Polymeren-Gemisch und einer etwa 0,6 mm dicken, zur Einschränkung von Antrieb dienenden Schicht 4 aus Polyäthylen.1 with a steel pipe is referred to, which with one in the extruder process manufactured insulation is provided. The insulation consists of an approximately 0.8 mm thick corrosion protection layer 2 made of polyethylene, an about 1.5 mm thick intermediate layer 3 made of a polymer mixture and one about 0.6 mm thick, for restriction from the drive serving layer 4 made of polyethylene.
Claims (3)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762648294 DE2648294A1 (en) | 1976-10-26 | 1976-10-26 | INSULATION FOR BIG METAL PIPES |
| IT5107277A IT1090223B (en) | 1976-10-26 | 1977-09-19 | INSULATION SYSTEM FOR METAL TUBES |
| ES462639A ES462639A1 (en) | 1976-10-26 | 1977-09-26 | Ground laid metal pipe insulation - comprises three layers, central high filler content layer protecting inner corrosion protection surface (BE 25.4.78) |
| NL7711509A NL7711509A (en) | 1976-10-26 | 1977-10-20 | INSULATION FOR METAL PIPES FOR UNDERGROUND PIPES. |
| FR7731641A FR2369498A1 (en) | 1976-10-26 | 1977-10-20 | Ground laid metal pipe insulation - comprises three layers, central high filler content layer protecting inner corrosion protection surface (BE 25.4.78) |
| BE182027A BE860075A (en) | 1976-10-26 | 1977-10-25 | INSULATION FOR METAL TUBES LAYED IN THE FLOOR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762648294 DE2648294A1 (en) | 1976-10-26 | 1976-10-26 | INSULATION FOR BIG METAL PIPES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2648294A1 true DE2648294A1 (en) | 1978-04-27 |
Family
ID=5991348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19762648294 Pending DE2648294A1 (en) | 1976-10-26 | 1976-10-26 | INSULATION FOR BIG METAL PIPES |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE860075A (en) |
| DE (1) | DE2648294A1 (en) |
| ES (1) | ES462639A1 (en) |
| FR (1) | FR2369498A1 (en) |
| IT (1) | IT1090223B (en) |
| NL (1) | NL7711509A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3214319C1 (en) * | 1982-04-19 | 1984-03-29 | Hoesch Werke Ag, 4600 Dortmund | Metal tube with corrosion and stone protection coating made of plastic |
| DK155209B (en) * | 1978-11-06 | 1989-03-06 | Kendall & Co | COATED ARTICLE IN THE FORM OF A METALROS AND PROCEDURES FOR PRODUCING THEM |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3480197B2 (en) * | 1996-10-28 | 2003-12-15 | Ｊｆｅスチール株式会社 | Polypropylene-coated steel pipe excellent in thermal oxidation deterioration resistance and weather resistance and method for producing the same |
| RU2188927C1 (en) * | 2001-12-06 | 2002-09-10 | Устюгов Владимир Аркадьевич | Antifriction coat for guide profile |
| RU2188926C1 (en) * | 2001-12-06 | 2002-09-10 | Устюгов Владимир Аркадьевич | Guiding profile |
-
1976
- 1976-10-26 DE DE19762648294 patent/DE2648294A1/en active Pending
-
1977
- 1977-09-19 IT IT5107277A patent/IT1090223B/en active
- 1977-09-26 ES ES462639A patent/ES462639A1/en not_active Expired
- 1977-10-20 FR FR7731641A patent/FR2369498A1/en active Pending
- 1977-10-20 NL NL7711509A patent/NL7711509A/en not_active Application Discontinuation
- 1977-10-25 BE BE182027A patent/BE860075A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK155209B (en) * | 1978-11-06 | 1989-03-06 | Kendall & Co | COATED ARTICLE IN THE FORM OF A METALROS AND PROCEDURES FOR PRODUCING THEM |
| DE3214319C1 (en) * | 1982-04-19 | 1984-03-29 | Hoesch Werke Ag, 4600 Dortmund | Metal tube with corrosion and stone protection coating made of plastic |
Also Published As
| Publication number | Publication date |
|---|---|
| ES462639A1 (en) | 1978-06-16 |
| NL7711509A (en) | 1978-04-28 |
| FR2369498A1 (en) | 1978-05-26 |
| IT1090223B (en) | 1985-06-26 |
| BE860075A (en) | 1978-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| OHW | Rejection |