CH623390A5 - Tubular pipeline for transporting fluid or gaseous media, especially at high temperatures and high pressure - Google Patents
Tubular pipeline for transporting fluid or gaseous media, especially at high temperatures and high pressure Download PDFInfo
- Publication number
- CH623390A5 CH623390A5 CH1438776A CH1438776A CH623390A5 CH 623390 A5 CH623390 A5 CH 623390A5 CH 1438776 A CH1438776 A CH 1438776A CH 1438776 A CH1438776 A CH 1438776A CH 623390 A5 CH623390 A5 CH 623390A5
- Authority
- CH
- Switzerland
- Prior art keywords
- line according
- tubular line
- moisture
- base material
- layer
- Prior art date
Links
- 239000012530 fluid Substances 0.000 title 1
- 239000000463 material Substances 0.000 claims description 22
- 229920001971 elastomer Polymers 0.000 claims description 8
- 239000000806 elastomer Substances 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 6
- 239000011243 crosslinked material Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical group [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 239000004753 textile Substances 0.000 claims description 3
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 239000010426 asphalt Substances 0.000 claims description 2
- 235000014692 zinc oxide Nutrition 0.000 claims description 2
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 14
- 239000000203 mixture Substances 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 239000004952 Polyamide Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920002647 polyamide Polymers 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 2
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229920002681 hypalon Polymers 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- UBRWPVTUQDJKCC-UHFFFAOYSA-N 1,3-bis(2-tert-butylperoxypropan-2-yl)benzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC(C(C)(C)OOC(C)(C)C)=C1 UBRWPVTUQDJKCC-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- KSNRDYQOHXQKAB-UHFFFAOYSA-N 2,2,4-trimethyl-3,4-dihydro-1h-quinoline Chemical compound C1=CC=C2C(C)CC(C)(C)NC2=C1 KSNRDYQOHXQKAB-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
-
- 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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- 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
-
- 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
- B32B5/18—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 features of a layer of foamed material
-
- 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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
-
- 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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
-
- 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
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
-
- 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
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeves; consisting of two half sleeves; comprising more than two segments
-
- 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
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool
-
- 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
- F16L59/145—Arrangements for the insulation of pipes or pipe systems providing fire-resistance
-
- 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
- F16L59/153—Arrangements for the insulation of pipes or pipe systems for flexible pipes
-
- 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
-
- 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
- F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/103—Metal fibres
-
- 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
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
- B32B2323/043—HDPE, i.e. high density polyethylene
-
- 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
- B32B2323/00—Polyalkenes
- B32B2323/10—Polypropylene
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Thermal Insulation (AREA)
Description
Die vorliegende Erfindung betrifft eine rohrförmige Leitung zum Transport flüssiger oder gasförmiger Medien, insbesondere bei hohen Temperaturen und hohem Druck, deren Wandung aus mehreren wärme-isolierenden Schichten aufgebaut ist. The present invention relates to a tubular line for the transport of liquid or gaseous media, in particular at high temperatures and high pressure, the wall of which is made up of several heat-insulating layers.
Zur Förderung von flüssigen oder gasförmigen Medien, die nur unter geringem Druck stehen, ist bereits eine biegsame Rohrleitung bekannt (DOS 2 125 575), die aus zwei koaxialen Rohren besteht. Das Innere dieser beiden koaxial zueinander angeordneten Rohre besteht aus einem Polyolefin und das äussere Mantelrohr ist aus einem Polyamid hergestellt, wobei jedes Ende mit einer durch Formung der Rohrleitung befestigten Einbindung versehen ist. Das innere Rohr, das Schutz gegen chemische Einflüsse durch das in der Rohrleitung beförderte Medium bieten soll, kann beispielsweise aus Polyäthylen hoher Dichte oder auch aus Polytetrafluoräthylen hergestellt sein, während das Mantelrohr, das als Schutzüberzug dient und deshalb Festigkeiten gegenüber Abrieb, Stössen und Deformationen als Folgen der Belastung aufzuweisen hat, aus Polyamid besteht. Die so aufgebaute Konstruktion ist ausdrücklich für die Förderung unter geringem Druck vorgesehen, Medien mit hoher Temperatur und hohem Druck lassen sich nur unter Schwierigkeiten befördern, da ab einer bestimmten Temperatur das 5 Polyäthylen schmilzt bzw. bei gleichzeitigem Anwenden von höheren Drücken mit Deformationen bzw. Zerstörungen des Polyäthylens gerechnet werden muss. A flexible pipe (DOS 2 125 575), which consists of two coaxial pipes, is already known for the conveyance of liquid or gaseous media which are only under low pressure. The interior of these two coaxially arranged tubes is made of a polyolefin and the outer jacket tube is made of a polyamide, with each end being provided with an attachment fastened by shaping the pipeline. The inner tube, which is intended to provide protection against chemical influences from the medium conveyed in the pipeline, can be made, for example, from high-density polyethylene or from polytetrafluoroethylene, while the jacket tube, which serves as a protective coating and therefore has strengths against abrasion, impacts and deformations The consequences of the load have to be made of polyamide. The construction constructed in this way is expressly intended for conveying under low pressure; media with high temperature and high pressure can only be conveyed with difficulty because the polyethylene melts at a certain temperature or with deformation or destruction when higher pressures are applied at the same time of polyethylene must be expected.
Die Erfindung bezweckt eine rohrförmige Leitung, Rohr oder Schlauch, zum Transport flüssiger oder gasförmiger Mein dien zu schaffen, die auch Druck- und Temperaturschwankungen ohne Schaden zu nehmen aufnimmt, wobei sichergestellt sein soll, dass der mit dem Medium in Berührung stehende Teil der Leitung weitgehend chemisch beständig ist. The invention aims to provide a tubular line, tube or hose for the transport of liquid or gaseous my services, which also absorbs pressure and temperature fluctuations without being damaged, while ensuring that the part of the line in contact with the medium is largely is chemically stable.
Die erfindungsgemässe rohrförmige Leitung ist dadurch ge-15 kennzeichnet, dass mindestens eine Schicht der Rohrwandung aus einem feuchtigkeitsvernetzten Werkstoff auf der Basis von Thermoplasten, Elastomeren oder thermoplastischem Kautschuk besteht. Der feuchtigkeitsvernetzte Werkstoff führt zu einer Leitung, die sich durch eine hohe chemische Beständigkeit 20 und Temperaturbeständigkeit auszeichnet. Sie ist in beliebigen Längen herstellbar und nicht durch Biege- oder Knickbeanspruchungen während des Betriebes irreversibel zu deformieren. The tubular line according to the invention is characterized in that at least one layer of the tube wall consists of a moisture-crosslinked material based on thermoplastics, elastomers or thermoplastic rubber. The moisture-crosslinked material leads to a line which is characterized by high chemical resistance and temperature resistance. It can be produced in any length and cannot be irreversibly deformed by bending or bending stresses during operation.
Nachfolgend werden Ausführungsbeispiele des Erfindungsgegenstandes beschrieben. Exemplary embodiments of the subject matter of the invention are described below.
25 Besonders vorteilhaft ist es, wenn zumindest die innere mit dem Medium in Berührung kommende Schicht aus einem feuchtigkeitsvernetzten Basismaterial besteht. In diesem Fall hat es sich als besonders zweckmässig erwiesen, die innere hochtemperaturbeständige Kunststoffschicht mit einer standfe-30 sten mechanisch widerstandsfähigen äusseren Schicht zu umgeben. Hierfür geeignet ist beispielsweise eine Hülle aus einem Polykarbonat, Polypropylen, Polyamid, vernetztes Polyäthylen oder Polyurethan. Je nach dem gewünschten Wärmeverlusten ist über die Schichtdicke die Einstellung der maximalen Wärme-35 abgabe möglich. Besonders energiesparend sind daher die folgenden Schichtdicken: It is particularly advantageous if at least the inner layer that comes into contact with the medium consists of a moisture-crosslinked base material. In this case, it has proven particularly expedient to surround the inner, high-temperature-resistant plastic layer with a stable, mechanically resistant outer layer. A cover made of polycarbonate, polypropylene, polyamide, cross-linked polyethylene or polyurethane is suitable for this, for example. Depending on the desired heat loss, the maximum heat emission can be set via the layer thickness. The following layer thicknesses are therefore particularly energy-saving:
Nennwerte bei Wärmedurchgangszahl 0,2 W/mk 0,5 W/mk Nominal values for thermal transmittance 0.2 W / mk 0.5 W / mk
PU VPE PU PU
Nennweite 13 (mm) 11 50 2 6 Nominal size 13 (mm) 11 50 2 6
40 Nennweite 20 (mm) 16 67 3,5 10 40 nominal size 20 (mm) 16 67 3.5 10
Um ein wärmegedämmtes Rohr für den rauhen Baustellenbetrieb strapazierfähig zu machen, benötigt man über dem Schaum eine feste Hülle. Diese kann z.B. aus einer massiven 45 Kunststoffhülle bestehen, die sowohl nicht aufgeschäumtes vernetztes Polyäthylen sein kann oder auch getrennt als Form bei der PU-Schaum-Isolierung aufgebracht worden ist. In order to make a thermally insulated pipe hard-wearing for rough construction site operations, you need a firm cover over the foam. This can e.g. consist of a solid 45 plastic shell, which can either be non-foamed, cross-linked polyethylene or has been applied separately as a mold for PU foam insulation.
Die innere hochtemperaturbeständige Schicht aus dem feuchtigkeitsvernetzten Basismaterial ist mit der äusseren so Schicht bei Auswahl geeigneter Materialien leicht verschweiss-bar. Die Verschweissung lässt sich in einfacher Weise dadurch erreichen, dass z.B. im Tandemverfahren oder in einem Doppelextruderkopf unmittelbar auf das gespritzte Innenrohr das Aussenrohr durch Extrusion aufgebracht wird. Da eine die 55 Verschweissung störende Vernetzung der inneren Schicht erst zu einem späteren Zeitpunkt unter der Einwirkung von Feuchtigkeit erfolgt, lässt sich auf diese Weise eine innige Verbindung der beiden Schichten und damit ein weitgehend einheitliches Gebilde erreichen. Es ist auch möglich, als äussere Schicht 60 durch dickere aufgeschäumte Schicht aus Polypropylen oder Polyamid oder ähnliches aufzubringen, so dass neben der Stützwirkung auch eine bessere Wärmeisolierung der Leitung erreicht wird. The inner, high-temperature-resistant layer made of the moisture-crosslinked base material can be easily welded to the outer layer if suitable materials are selected. The welding can be easily achieved by e.g. in a tandem process or in a double extruder head, the outer tube is applied directly to the sprayed inner tube by extrusion. Since the crosslinking of the inner layer, which interferes with the welding, takes place at a later point in time under the influence of moisture, an intimate connection of the two layers and thus a largely uniform structure can be achieved in this way. It is also possible to apply the outer layer 60 through a thicker, foamed layer made of polypropylene or polyamide or the like, so that in addition to the support effect, better heat insulation of the line is also achieved.
Als Basismaterial für feuchtigkeitsvernetzbare Schichten im 65 Aufbau einer Rohrleitung können, wie in der Siloxantechnik bekannt (DAS 1 794 028, DOS 2 411 141), Verbindungen verwendet werden, bei denen das Siloxan oder auch die Siloxanver-bindungen auf die Basismoleküle der Thermoplasten, Elasto- As is known in siloxane technology (DAS 1 794 028, DOS 2 411 141), compounds in which the siloxane or the siloxane compounds are based on the base molecules of the thermoplastics, elasto, can be used as the base material for moisture-crosslinkable layers in the construction of a pipeline -
623 390 623 390
mere oder der thermoplastischen Kautschuke aufgepfropft werden. Die Herstellung solcher Mischungen kann dann in der Weise erfolgen, dass in einem vorgelagerten Mischprozess mit einem hochtourigen Mischaggregat die Lösung der Siloxan-Vernetzungs-Chemikalien auf dem Wege der Diffusion in das Basismaterial eingebracht wird, oder auch dadurch, dass die Vernetzungsmittel enthaltende Lösung unmittelbar in der Ver-arbeitungs- und/oder Ausformungsvorrichtung zu dosiert wird. Bei grössere Mengen Füllstoff enthaltenden Mischungen kann jedoch, wie in der Gummi- und Kunststoffindustrie üblich, ein Mischprozess vorgeschaltet werden. gers or the thermoplastic rubbers are grafted on. Such mixtures can then be produced in such a way that the solution of the siloxane crosslinking chemicals is introduced into the base material by diffusion in a preceding mixing process with a high-speed mixing unit, or else by the solution containing the crosslinking agent being introduced directly into the base material the processing and / or shaping device is metered. In the case of mixtures containing large amounts of filler, however, a mixing process can be carried out, as is customary in the rubber and plastics industry.
Abweichend von solchen Verfahren kann auf das Aufpfropfen von geeigneten Verbindungen verzichtet werden, wenn man Materialien verwendet, die durch Anlagerung von Verbindungen vernetzbar sind, die die Silicium-Hydrid-Gruppe }Si-H ein-oder mehrmals im Molekül enthalten. Es können den Basismaterialien, wie Polyäthylen, Äthylen-Propylen, thermoplastische Kautschuke usw. Zinn oder Zinkoxide z.B. in einer Menge von 0,5-2,0 Teilen auf 100 Teile Basismaterial beigemischt werden. Diese Materialien haben den besonderen Effekt, dass sie durch chemische Reaktionen innerhalb des gespritzten Materials Wasser bilden, das bereits unmittelbar nach dem Extrudieren die Vernetzung einleiten kann. Auch können dem Basismaterial je nach Verwendungszweck schwer brennbar machende Zusätze beigemischt werden, z.B. kann das Polyäthylen einer Mischung bis zu 100% durch chloriertes Polyäthylen ersetzt werden. In deviation from such processes, the grafting of suitable compounds can be dispensed with if materials are used which can be crosslinked by the addition of compounds which contain the silicon hydride group Si-H one or more times in the molecule. The base materials such as polyethylene, ethylene propylene, thermoplastic rubbers, etc. tin or zinc oxides e.g. in an amount of 0.5-2.0 parts per 100 parts of base material. These materials have the special effect that they form water through chemical reactions within the sprayed material, which can initiate crosslinking immediately after extrusion. Depending on the intended use, additives that make flame retardant can also be added to the base material, e.g. the polyethylene of a mixture can be replaced up to 100% by chlorinated polyethylene.
Die Temperaturbeständigkeit der rohrförmigen Leitung lässt sich aber auch dadurch erreichen, dass die betreffenden Schichten aus durch Feuchtigkeit vernetzbaren Elastomeren oder thermoplastischen Kautschuken bestehen. Als Basismaterialien geeignet sind z.B. die TPR-Typen der Fa. Uniroyal, die TR-Typen der Fa. Shell u.a.. Es lassen sich aber auch andere geeignete Elastomere wie EPDM, EPM, Nitrilkautschuk, das unter dem Handelsnamen Hypalon der Fa. Dupont verwendete chlorsulfonierte Polyäthylen usw. vorteilhaft einsetzen. Im letzteren Falle ist es dann zweckmässig, der Elastomermischung geeignete, möglichst wasserfreie Füllstoffe, wie Mikroglasku-geln, Glasfasern oder hochschmelzende wasserfreie Kunstharze und/oder Bitumina und/oder Asphalte, z.B. Gilsonit-Asphalt, in einem vorgeschalteten Mischprozess beizufügen. Mengen bis zu 100 Teilen vorzugsweise bis zu 50 Teilen von Mikroglasku-geln oder kurzgeschnittenen Glasfasern haben sich hier als besonders vorteilhaft erwiesen, während die Menge der beigegebenen hochschmelzenden wasserfreien Kunstharze, Bitumina und dergl. insgesamt bis zu 200 Teilen, vorzugsweise bis zu 100 Teilen beträgt. The temperature resistance of the tubular line can also be achieved in that the layers in question consist of moisture-crosslinkable elastomers or thermoplastic rubbers. Suitable base materials are e.g. the TPR types from Uniroyal, the TR types from Shell etc. However, other suitable elastomers such as EPDM, EPM, nitrile rubber, the chlorosulfonated polyethylene used under the trade name Hypalon by Dupont, etc. can also be used advantageously . In the latter case, it is then expedient to fill the elastomer mixture with suitable fillers which are as water-free as possible, such as microglass beads, glass fibers or high-melting water-free synthetic resins and / or bitumens and / or asphalts, e.g. Gilsonite asphalt, to be added in an upstream mixing process. Amounts of up to 100 parts, preferably up to 50 parts of microglass beads or short-cut glass fibers, have proven to be particularly advantageous here, while the amount of the high-melting anhydrous synthetic resins, bitumens and the like added is up to 200 parts, preferably up to 100 parts .
Die im Aufbau der rohrförmigen Leitung vorgesehenen, z.B. inneren oder äusseren Schichten können aus den gleichen, aber auch aus verschiedenen Basismaterialien hergestellt werden, wie z.B. aus durch feuchtigkeitsvernetzbaren EPDM. The provided in the construction of the tubular line, e.g. inner or outer layers can be made from the same, but also from different base materials, e.g. made of moisture-crosslinkable EPDM.
Vorteilhaft kann es mitunter auch sein, z.B. wenn es sich um Druckschläuche handelt, zwei Schichten übereinander zu extru-dieren und als Zwischenlage ein verstärkendes Metalldraht-, Glasfaser- oder Textilgeflecht vorzusehen, das mit der jeweils darunter und/oder darüber befindlichen Schicht verschweisst oder verklebt ist. Die Auswahl der Basiselastomeren oder Basisthermoplasten für die Schicht, die mit den zu transportierenden Flüssigkeiten oder Gasen in Berührung kommt, richtet sich in erster Linie nach der Beständigkeit des vernetzten Polymeren gegenüber diesen Medien. Sollen z.B. in einem Rohr oder in einem Druckschlauch öle transportiert werden, dann wird man eine ölbeständige innere Schicht, z.B. aus durch Feuchtigkeit vernetzbarem Nitrilkautschuk, wählen. Die Auswahl der äusseren Schicht wird in diesem Falle unter dem Gesichtspunkt erfolgen, die Druckfestigkeit der rohrförmigen Leitung möglichst hoch zu treiben. Dies trifft nicht nur auf die mechanischen Sometimes it can also be advantageous, e.g. if pressure hoses are involved, extrude two layers on top of each other and provide a reinforcing metal wire, glass fiber or textile braid as an intermediate layer, which is welded or glued to the layer underneath and / or above. The selection of the base elastomers or base thermoplastics for the layer that comes into contact with the liquids or gases to be transported depends primarily on the resistance of the crosslinked polymer to these media. Should e.g. oils are transported in a pipe or in a pressure hose, then one becomes an oil-resistant inner layer, e.g. choose from moisture-curable nitrile rubber. In this case, the selection of the outer layer will be made from the point of view of driving the pressure resistance of the tubular line as high as possible. This does not only apply to the mechanical ones
Eigenschaften der Mischung selbst zu. Es wird vor allen Dingen auch eine gute Verschweissbarkeit mit der ölbeständigen Schicht sowie der eventuell vorhandenen Verstärkungseinlagen aus Metall-, Glas- oder Textilgeflechten verlangt. 5 Zur Verbesserung der Verklebung der Verstärkungseinlagen mit den beiden Schichten lassen sich auch die üblichen Haftvermittler einsetzen, z.B. Copolymere des Äthylens mit Acrylsäure und Acrylsäureestern bei Metallen und Silane bei Glasgeweben oder -geflechten. Letztere sind in durch Feuchtig-10 keit vernetzbaren Mischungen bereits enthalten (aufgepfropft), wodurch die Wirkung der haftvermittelnden Silane bei Glasfasergeflechten noch gesteigert wird. Properties of the mixture itself too. Above all, good weldability with the oil-resistant layer and any reinforcing inserts made of metal, glass or textile braids is required. 5 The usual adhesion promoters can also be used to improve the bonding of the reinforcement inlays with the two layers, e.g. Copolymers of ethylene with acrylic acid and acrylic acid esters in metals and silanes in glass fabrics or braids. The latter are already contained (grafted) in mixtures which can be crosslinked by moisture, which further increases the effect of the adhesion-promoting silanes on glass fiber braids.
Die geschilderten Vorteile, insbesondere bei Einbau von Verstärkungszwischenlagen in mehrschichtige rohrförmige Lei-i5 tungen ergeben sich selbstverständlich nicht nur bei Druckschläuchen, deren Schichten au» feuchtigkeitsvernetzbaren Elastomermischungen bestehen, sondern auch bei den erwähnten biegbaren Druckrohren aus durch Feuchtigkeit vernetzbaren Thermoplasten, wie Polyäthylen hoher Dichte und/oder Poly-2o amid. The advantages described, in particular when installing reinforcement intermediate layers in multilayer tubular lines, do of course not only arise in the case of pressure hoses, the layers of which consist of moisture-crosslinkable elastomer mixtures, but also in the case of the bendable pressure tubes mentioned, which consist of moisture-crosslinkable thermoplastics, such as high-density polyethylene and / or poly-2o amide.
Vorteilhaft kann es auch bei der Herstellung einer rohrförmigen Leitung sein, wenn unmittelbar vor der Ausformung des feuchtigkeitsvernetzbaren Materials eine Entgasung stattfindet. Überschüssiges Silan oder leichte flüchtige Peroxidspaltproduk-25 te oder auch eingeschlossene Luft können hiermit leicht aus dem Massestrom entfernt werden, so dass Blasenbildung vermieden sind und damit Produkte hoher Oberflächengüte erreicht werden. It may also be advantageous in the manufacture of a tubular line if degassing takes place immediately before the moisture-crosslinkable material is formed. Excess silane or volatile peroxide fission products or trapped air can be easily removed from the mass flow so that bubbles are avoided and products with a high surface quality are achieved.
Die Zeichnungsfigur zeigt ein doppelwandiges Kunststoff-3o rohr als Heisswasser-Druckleitung. The drawing shows a double-walled plastic 3o pipe as a hot water pressure line.
Das Innenrohr 1 besteht aus einem feuchtigkeitsvernetzten Material, beispielsweise aus Polyäthylen, vorzugsweise Polyäthylen hoher Dichte, auf dessen Moleküle eine Silanverbin-dung aufgepfropft ist. Als Aussenrohr 2 dient z.B. ein Rohr aus 35 Polypropylen, das die Aufgabe einer standfesten Aussenhülle übernimmt. Diese standfeste Aussenhülle, von den Temperaturen des zu transportierenden Mediums wenig beeinflusst, sorgt dafür, dass auch bei erhöhten Temperaturen, d.h. 110-140° C das zwar noch standfeste, aber nicht mehr druckbeständige 40 Innenrohr von dem herrschenden Betriebsdruck nicht aufgeweitet oder gar zerstört wird. The inner tube 1 consists of a moisture-crosslinked material, for example of polyethylene, preferably high-density polyethylene, on the molecules of which a silane compound is grafted. The outer tube 2 is e.g. a tube made of 35 polypropylene, which takes on the task of a stable outer shell. This stable outer shell, little influenced by the temperatures of the medium to be transported, ensures that even at elevated temperatures, i.e. 110-140 ° C that is still stable, but no longer pressure-resistant 40 inner tube is not expanded or even destroyed by the prevailing operating pressure.
An Stelle von Polypropylen kann die Schicht 2 auch aus Polyamid bestehen, das an sich hydrolyseempfindlich ist und deshalb als Innenschicht, wo es Berührung mit dem zu trans-45 portierenden Medium erfährt, oft nicht eingesetzt werden kann. Instead of polypropylene, layer 2 can also consist of polyamide, which is inherently sensitive to hydrolysis and therefore often cannot be used as an inner layer where it comes into contact with the medium to be transported.
Es ist selbstverständlich auch möglich, die innere Schicht 1 aus einem geeigneten Werkstoff, z.B. Polycarbonat, zu wählen, das dann durch eine feuchtigkeitsvernetzte Aussenhaut gegen äussere chemische Einflüsse geschützt ist. It is of course also possible to make the inner layer 1 from a suitable material, e.g. Polycarbonate to choose, which is then protected against external chemical influences by a moisture-crosslinked outer skin.
so Möglichkeiten von Mischungen für das in der Zeichnungsfigur dargestellte Leitungsrohr sind in den folgenden Beispielen I und II dargestellt. So possibilities of mixtures for the pipe shown in the drawing figure are shown in the following examples I and II.
Beispiel I Example I
(Mischung für feuchtigkeitsvernetztes Innenrohr) (Mixture for moisture cross-linked inner tube)
55 Hart- bzw. Weich-Polyäthylen 100 Teile 55 hard or soft polyethylene 100 parts
Dicumylperoxid: 0,5-2,0 do. Dicumyl peroxide: 0.5-2.0 do.
Vinyltrimethoxisilan: 1,0-3,0 do. Vinyl trimethoxysilane: 1.0-3.0 do.
2,2,4-Trimethyl-dihydro-chinolin: 0,5 do. 2,2,4-trimethyl-dihydroquinoline: 0.5 do.
6o Dibutylzinndüaurat: 0,055 do. 6o dibutyltin duraurate: 0.055 do.
Beispiel II Example II
Hart- bzw. Weich-Polyäthylen 100 Teile Hard or soft polyethylene 100 parts
1,3-Bis (tert.-butylperoxiisopropyl)-benzol: 0,2-0,5 do. 1,3-bis (tert-butylperoxyisopropyl) benzene: 0.2-0.5 do.
Vinyltrimethoxisilan: 1,5 do. Vinyl trimethoxysilane: 1.5 do.
65 Zno: 2,0 do. 65 Zno: 2.0 do.
Dibutylzinndüaurat: 0,05 do. Dibutyltin duraurate: 0.05 do.
C C.
1 Blatt Zeichnungen 1 sheet of drawings
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752555017 DE2555017A1 (en) | 1975-12-06 | 1975-12-06 | TUBE-SHAPED STRUCTURE FOR TRANSPORTING LIQUID OR GAS-SHAPED MEDIA, ESPECIALLY AT HIGH TEMPERATURES AND HIGH PRESSURE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH623390A5 true CH623390A5 (en) | 1981-05-29 |
Family
ID=5963724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1438776A CH623390A5 (en) | 1975-12-06 | 1976-11-16 | Tubular pipeline for transporting fluid or gaseous media, especially at high temperatures and high pressure |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS5292918A (en) |
| AR (1) | AR210524A1 (en) |
| AT (1) | AT351324B (en) |
| BE (1) | BE849100A (en) |
| CH (1) | CH623390A5 (en) |
| DE (1) | DE2555017A1 (en) |
| DK (1) | DK530976A (en) |
| ES (1) | ES453874A1 (en) |
| FI (1) | FI763492A7 (en) |
| FR (1) | FR2334042A1 (en) |
| GB (1) | GB1522236A (en) |
| IT (1) | IT1073781B (en) |
| NL (1) | NL7613549A (en) |
| NO (1) | NO764127L (en) |
| SE (1) | SE7613652L (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3439312A1 (en) * | 1983-10-27 | 1985-05-15 | Toyoda Gosei K.K., Haruhi Nishikasugai, Aichi | Plastic hose |
| AT385043B (en) * | 1983-07-13 | 1988-02-10 | Pvg Patentverwertung | METHOD FOR PRODUCING A DIFFUSION-TIGHT PLASTIC PIPE |
| EP0268547A1 (en) * | 1986-11-18 | 1988-05-25 | MANNESMANN Aktiengesellschaft | Method for enveloping steel objects with plastics |
| EP0342181A1 (en) * | 1988-05-11 | 1989-11-15 | POLOPLAST Kunststoffwerk GmbH & Co KG | Plastic pipe or pipe fitting |
| US20250109808A1 (en) * | 2022-03-30 | 2025-04-03 | The Yokohama Rubber Co., Ltd. | Hose for refrigerant transportation and production method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8004849A (en) * | 1980-08-27 | 1982-04-01 | Wavin Bv | SPACER FOR INSULATED PLASTIC TUBE. |
| NL8005255A (en) * | 1980-09-19 | 1982-04-16 | Wavin Bv | PLASTIC TUBE PART PROVIDED WITH A PLASTIC FOAM INSULATION LAYER. |
| DE3446033A1 (en) * | 1984-12-18 | 1986-07-03 | B. Braun Melsungen Ag, 3508 Melsungen | IMPLANTABLE INTRAPERITONEAL CATHETER |
| FR2589786B1 (en) * | 1985-11-12 | 1987-12-24 | Caoutchouc Manuf Plastique | FLEXIBLE MULTI-LAYER COMPOSITION OF SOUND AND THERMAL INSULATION FOR SELF-SUPPORTING STRUCTURES AND ITS APPLICATIONS |
| EP0276584A1 (en) * | 1987-01-29 | 1988-08-03 | Caoutchouc Manufacturé et Plastiques Société Anonyme dite: | Flexible multilayer composite structure for acoustic and thermal insulation of self-supporting structures, and applications |
| AT393011B (en) * | 1988-07-22 | 1991-07-25 | Raimund Harreither Heizungs Un | Pipe element |
| CH677394A5 (en) * | 1988-09-06 | 1991-05-15 | Symalit Ag | |
| DE3840750A1 (en) * | 1988-12-03 | 1990-06-07 | Tecalemit Gmbh Deutsche | PLASTIC PART FOR FLAMMABLE MEDIA WITH FLAME RETARDANT AND METHOD FOR THE PRODUCTION THEREOF |
| BR8806879A (en) * | 1988-12-26 | 1990-10-30 | Colognori Umberto | FLOOR FOR CONTAINERS AND VEHICLE BODYWORK IN GENERAL |
| IT219178Z2 (en) * | 1989-12-20 | 1992-12-17 | F.I.S.T. S.P.A. | FLEXIBLE CONDUCT FOR CIRCUITS OF CIRCULATION OF THE COOLANT LIQUID OF A VEHICLE ENGINE. |
| EP0542315A1 (en) * | 1991-11-15 | 1993-05-19 | Hewing GmbH | Pipe for conveying cold or hot fluids |
| FI96396C (en) * | 1992-12-28 | 1996-06-25 | Uponor Bv | Process for forming a double-layered plastic tube for material transport and a double-layered plastic tube formed by the method |
| GB9303763D0 (en) * | 1993-02-25 | 1993-04-14 | A I Covers Limited | Passive fire protection |
| GB9316521D0 (en) * | 1993-08-09 | 1993-09-22 | Victaulic Plc | Improvements in or relating to pipes |
| EP0638749B1 (en) * | 1993-08-09 | 1998-06-17 | Victaulic Plc | Improvements in or relating to pipes |
| DE29622414U1 (en) * | 1996-12-24 | 1997-04-03 | Rehau Ag + Co, 95111 Rehau | Thermoplastic pipe |
| DE29713786U1 (en) * | 1997-08-02 | 1997-09-25 | Rehau Ag + Co, 95111 Rehau | Thermoplastic pipe |
| FR2797673B1 (en) * | 1999-08-19 | 2001-11-09 | Coutier Moulage Gen Ind | PIPE FOR COOLING CIRCUIT |
| ATE554917T1 (en) * | 2006-05-26 | 2012-05-15 | Borealis Tech Oy | COATED TUBE WITH A POLYOLEFIN LAYER WITH IMPROVED ADHESION |
| ES2403145B1 (en) * | 2011-11-08 | 2014-03-31 | Abn Pipe Systems, S.L.U. | INSULATING PIPING FOR GEOTHERMAL APPLICATIONS. |
| FR3062446B1 (en) | 2017-02-02 | 2020-07-31 | Tristone Flowtech Solutions Tfs | AUTOMOTIVE VEHICLE FLUID CIRCULATION DUCT, ITS MANUFACTURING PROCESS AND ITS USE AS A MOTOR VEHICLE ENGINE FLUID COOLING PIPE |
| CN107143726A (en) * | 2017-05-18 | 2017-09-08 | 四川森洁燃气设备有限公司 | A kind of erosion resistant fuel gas transportation pipeline |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1723793U (en) * | 1955-11-30 | 1956-06-07 | Rudolf Darmstadt | INSULATING TUBE, IN PARTICULAR FOR THE PROMOTION OF COLD-STOCKING TECHNICAL OIL. |
| US2971538A (en) * | 1958-01-31 | 1961-02-14 | Moore & Co Samuel | Extruded tubing |
| CH434716A (en) * | 1965-12-13 | 1967-04-30 | Schaerer Andre Ing Dr | Plastic pipe |
| US3447572A (en) * | 1966-11-08 | 1969-06-03 | Exxon Research Engineering Co | Reinforced thermoset plastic pipe |
| GB1234034A (en) * | 1967-08-31 | 1971-06-03 | ||
| US3565119A (en) * | 1968-10-25 | 1971-02-23 | Koch Ind Inc | Filament wound reinforced pipe having a vinyl ester resin inner lining |
| US3740958A (en) * | 1971-01-19 | 1973-06-26 | S Cadwell | Method of fabricating and installing a submergible pipeline |
| CA1033311A (en) * | 1974-02-14 | 1978-06-20 | Aeroquip Corporation | Pressurized hydraulic fluid system using cross-linked chlorinated polyethylene hose |
| DE2411141A1 (en) * | 1974-03-08 | 1975-09-18 | Kabel Metallwerke Ghh | Sheathing cable cores in thermoplastics crosslinked by moisture - additives fed into high speed mixer and diffused uniformly |
| CA1030883A (en) * | 1974-11-11 | 1978-05-09 | Hans A. Johansen | Dimensionally stable, flexible hydraulic hose having improved chemical and temperature resistance |
| ES443507A1 (en) * | 1975-12-16 | 1977-05-01 | Casals Roca Umbert Ana Maria | Improvements in the manufacture of textile hoses. (Machine-translation by Google Translate, not legally binding) |
-
1975
- 1975-12-06 DE DE19752555017 patent/DE2555017A1/en not_active Ceased
-
1976
- 1976-11-16 CH CH1438776A patent/CH623390A5/en not_active IP Right Cessation
- 1976-11-25 DK DK530976A patent/DK530976A/en not_active Application Discontinuation
- 1976-12-01 GB GB50104/76A patent/GB1522236A/en not_active Expired
- 1976-12-02 ES ES453874A patent/ES453874A1/en not_active Expired
- 1976-12-03 FI FI763492A patent/FI763492A7/fi not_active Application Discontinuation
- 1976-12-03 IT IT52470/76A patent/IT1073781B/en active
- 1976-12-03 NO NO764127A patent/NO764127L/no unknown
- 1976-12-03 AT AT898376A patent/AT351324B/en not_active IP Right Cessation
- 1976-12-06 FR FR7636706A patent/FR2334042A1/en active Pending
- 1976-12-06 AR AR265737A patent/AR210524A1/en active
- 1976-12-06 JP JP14572476A patent/JPS5292918A/en active Pending
- 1976-12-06 SE SE7613652A patent/SE7613652L/en unknown
- 1976-12-06 NL NL7613549A patent/NL7613549A/en not_active Application Discontinuation
- 1976-12-06 BE BE172995A patent/BE849100A/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT385043B (en) * | 1983-07-13 | 1988-02-10 | Pvg Patentverwertung | METHOD FOR PRODUCING A DIFFUSION-TIGHT PLASTIC PIPE |
| DE3439312A1 (en) * | 1983-10-27 | 1985-05-15 | Toyoda Gosei K.K., Haruhi Nishikasugai, Aichi | Plastic hose |
| EP0268547A1 (en) * | 1986-11-18 | 1988-05-25 | MANNESMANN Aktiengesellschaft | Method for enveloping steel objects with plastics |
| EP0342181A1 (en) * | 1988-05-11 | 1989-11-15 | POLOPLAST Kunststoffwerk GmbH & Co KG | Plastic pipe or pipe fitting |
| US20250109808A1 (en) * | 2022-03-30 | 2025-04-03 | The Yokohama Rubber Co., Ltd. | Hose for refrigerant transportation and production method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7613549A (en) | 1977-06-08 |
| FI763492A7 (en) | 1977-06-07 |
| IT1073781B (en) | 1985-04-17 |
| AT351324B (en) | 1979-07-25 |
| NO764127L (en) | 1977-06-07 |
| DK530976A (en) | 1977-06-07 |
| DE2555017A1 (en) | 1977-06-08 |
| ES453874A1 (en) | 1977-11-16 |
| BE849100A (en) | 1977-06-06 |
| GB1522236A (en) | 1978-08-23 |
| AR210524A1 (en) | 1977-08-15 |
| SE7613652L (en) | 1977-06-07 |
| JPS5292918A (en) | 1977-08-04 |
| FR2334042A1 (en) | 1977-07-01 |
| ATA898376A (en) | 1978-12-15 |
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