DE102007013061A1 - Penstock - Google Patents
Penstock Download PDFInfo
- Publication number
- DE102007013061A1 DE102007013061A1 DE200710013061 DE102007013061A DE102007013061A1 DE 102007013061 A1 DE102007013061 A1 DE 102007013061A1 DE 200710013061 DE200710013061 DE 200710013061 DE 102007013061 A DE102007013061 A DE 102007013061A DE 102007013061 A1 DE102007013061 A1 DE 102007013061A1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- inner layer
- pressure pipeline
- outer layer
- locking device
- 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.)
- Ceased
Links
- 238000010030 laminating Methods 0.000 claims abstract description 13
- 239000004743 Polypropylene Substances 0.000 claims abstract description 10
- 229920001155 polypropylene Polymers 0.000 claims abstract description 10
- 239000011152 fibreglass Substances 0.000 claims abstract description 9
- -1 polypropylene Polymers 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000012815 thermoplastic material Substances 0.000 claims abstract 2
- 238000003475 lamination Methods 0.000 claims description 13
- 239000003365 glass fiber Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims 2
- 239000002131 composite material Substances 0.000 claims 2
- 239000011521 glass Substances 0.000 claims 2
- 239000000463 material Substances 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 description 1
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000035939 shock Effects 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
- 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
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
Die Erfindung betrifft Druckrohrleitungen mit einer tragenden Außenschicht (1) und einer Innenschicht (2), wobei die Außenschicht (1) glasfaserverstärkten Kunststoff und die Innenschicht (2) einen thermoplastischen Kunststoff, vorzugsweise Polypropylen, aufweist. Zwischen der Außenschicht (1) und der Innenschicht (2) ist eine Kaschierungsschicht (3) angeordnet. Weiter betrifft die Erfindung ein entsprechendes Herstellungsverfahren. Durch die erfindungsgemäße Druckrohrleitung wird die Anzahl von Schweißnähten minimiert und die Sicherheit der Verbindung von Rohrstücken bei der Endmontage verbessert.The invention relates to pressure pipes with a supporting outer layer (1) and an inner layer (2), wherein the outer layer (1) glass fiber reinforced plastic and the inner layer (2) comprises a thermoplastic material, preferably polypropylene. Between the outer layer (1) and the inner layer (2) a laminating layer (3) is arranged. Furthermore, the invention relates to a corresponding manufacturing method. By the pressure pipe according to the invention, the number of welds is minimized and improves the safety of the connection of pipe sections in the final assembly.
Description
Die Erfindung betrifft Druckrohrleitungen, insbesondere großformatige Druckrohrleitungen, und ein entsprechendes Herstellungsverfahren.The The invention relates to penstocks, in particular large-sized Pressure pipelines, and a corresponding manufacturing process.
Großformatige Druckrohrleitungen werden bisher aus Stahl bzw. gummiertem Stahl und seltener aus glasfaserverstärktem Kunststoff (GFK) hergestellt. Dabei werden Teilstücke mittels bekannten Techniken, zum Beispiel mittels Wickelrohrtechnik, zu einem Rohr verbunden, das zum Transport beziehungsweise zum Einbau in entsprechende Rohrstücke getrennt wird. Zur Endmontage eines Rohres werden die Rohrstücke verbunden, beispielsweise mittels bekannten Schweißverfahren.Large format Pressure pipes are currently made of steel or rubberized steel and, more rarely, fiberglass reinforced Plastic (GRP) produced. Here are cuts by means known techniques, for example by means of winding tube technology, too connected to a pipe for transport or installation in corresponding pieces of pipe is disconnected. For final assembly of a pipe, the pipe sections are connected, for example by means of known welding methods.
Dadurch entstehen bei bisher verwendeten Druckrohrleitungen viele Nähte, die potentielle Schwachstellen beim späteren Betrieb darstellen. Weiter sind bisher verwendete Wandstärken bei derartigen Rohren, beziehungsweise die Wandstärken von Innenschichten in den Rohren, wie zum Beispiel einer Gummierung, sehr gering. Bei der Montage der Rohrstücke besteht deshalb die Gefahr, dass bei einem geringen Versatz der Rohrstücke, bei dem die Rohrstücke nicht exakt bündig beziehungsweise formschlüssig miteinander verbunden werden, eine Schwachstelle entsteht, die beim späteren Betrieb frühzeitig zu einem Defekt des Rohrs führen kann.Thereby arise in previously used penstocks many seams, the pose potential weaknesses during later operation. Further are previously used wall thicknesses in such pipes, or the wall thicknesses of Inner layers in the tubes, such as a rubber coating, very low. When installing the pipe sections, therefore, there is the danger that at a small offset of the pipe sections, in which the pipe sections are not exactly flush or positively be connected with each other, a vulnerability arises in the later Operation early lead to a defect of the pipe can.
Dadurch können Stoffe, die durch das Rohr geleitet werden, wie zum Beispiel Abwasser, austreten und in die Umwelt gelangen beziehungsweise können zu transportierende Stoffe in dem Rohr, wie zum Beispiel Trinkwasser, verunreinigt werden.Thereby can Substances passing through the pipe, such as sewage, escape and get into the environment or can transporting substances in the pipe, such as drinking water, be contaminated.
Die Aufgabe der Erfindung besteht darin, eine verbesserte Druckrohrleitung und ein entsprechendes Herstellungsverfahren bereitzustellen, das die Anzahl von Verbindungsnähten minimiert und die Sicherheit der Verbindung von Rohrstücken verbessert beziehungsweise erleichtert. Weiter soll die Haltbarkeit von Druckrohrleitungen erhöht werden.The The object of the invention is an improved penstock and to provide a corresponding manufacturing method that the Number of connecting seams minimizes and improves the safety of the connection of pipe sections or relieved. Next is the durability of penstocks elevated become.
Die Aufgabe wird mit den Merkmalen der Patentansprüche gelöst.The The object is achieved with the features of the claims.
Die Erfindung geht von dem Grundgedanken aus, auf einer vorzugsweise extrudierten und besonders bevorzugt nahtlosen Innenschicht eine tragende Außenschicht anzuordnen. Die Innenschicht weist einen thermoplastischen Kunststoff, vorzugsweise Polypropylen (PP), und die Außenschicht glasfaserverstärkten Kunststoff (GFK) auf; zur Sicherstellung der Verbindung zwischen Innenschicht und Außenschicht wird eine Kaschierungsschicht angeordnet. Dies ist insbesondere zweckmäßig, wenn die Wärmeausdehnungskoeffizienten der verwendeten Materialien für die Innenschicht und die Außenschicht verschieden sind. Durch die vorzugsweise nahtlose Innenschicht entstehen beim Zusammenfügen von Rohrstücken nur am Anfang beziehungsweise am Ende eines Rohrstücks Verbindungsnähte.The Invention is based on the idea, preferably on one extruded and most preferably seamless inner layer one bearing outer layer to arrange. The inner layer has a thermoplastic, preferably polypropylene (PP), and the outer layer of glass fiber reinforced plastic (GFK) on; to ensure the connection between inner layer and outer layer a laminating layer is arranged. This is special appropriate if the thermal expansion coefficients the materials used for the inner layer and the outer layer different are. Due to the preferably seamless inner layer arise during Put together of pipe pieces only at the beginning or at the end of a piece of pipe connecting seams.
Weiter geht die Erfindung von dem Grundgedanken aus, die Innenschicht, die maßgeblich für die Dichtigkeit der Druckrohrleitung ist, mit einer ausreichenden Schichtdicke auszubilden, um bei der Verbindung von Rohrstücken eine hohe Qualität, auch bei minimalem axialen Versatz der Rohrstücke zueinander, sicherstellen zu können. Durch die Schichtdicke der Innenschicht (Materialdicke des Innenrohrs) wird auch die Haltbarkeit der Druckrohrleitung verbessert.Further the invention proceeds from the basic idea, the inner layer, the authoritative for the tightness the penstock is to form with a sufficient layer thickness, at the connection of pipe sections a high quality, even with minimal axial displacement of the pipe pieces to each other, make sure to be able to. By the layer thickness of the inner layer (material thickness of the inner tube) is also improves the durability of the penstock.
Vorzugsweise ist eine Arretiervorrichtung auf der Außenseite der Innenschicht vorgesehen, um die Verbindung zur darauf angeordneten Außenschicht zu verbessern. Insbesondere durch die verschiedenen Wärmeausdehnungskoeffizienten der verwendeten Materialien, beispielsweise GFK für die Außenschicht und PP für die Innenschicht, kann so zusätzlich zur Kaschierungsschicht sichergestellt werden, dass Kräfte, die durch den relativ hohen Wärmeausdehnungskoeffizienten der Innenschicht entstehen, sicher in die GFK-Struktur eingeleitet werden.Preferably a locking device is provided on the outside of the inner layer, to improve the connection to the outer layer arranged thereon. Especially through the different thermal expansion coefficients the materials used, for example, GFRP for the outer layer and PP for the inner layer can be so extra be ensured to the lamination layer that forces that by the relatively high thermal expansion coefficient the inner layer arise, safely introduced into the GRP structure become.
Im Folgenden werden bevorzugte Ausführungsformen mit Bezug auf die Figuren beschrieben; es zeigen:in the The following are preferred embodiments described with reference to the figures; show it:
Die
Kaschierungsschicht
Durch
die Kaschierungsschicht
Um
bei der Montage von Rohrstücken
eine gute Verbindung zu gewährleisten,
wird die Innenschicht
Wie
in
Verschiedene
Ausdehnungen der Außenschicht
Die
Kaschierungsschicht
Die
Arretiervorrichtung
Die
Arretiervorrichtung
Bei
der Herstellung einer erfindungsgemäßen Druckrohrleitung wird auf
einer Innenschicht
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710013061 DE102007013061A1 (en) | 2007-03-19 | 2007-03-19 | Penstock |
PCT/EP2008/053231 WO2008113805A1 (en) | 2007-03-19 | 2008-03-18 | Pressure piping |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710013061 DE102007013061A1 (en) | 2007-03-19 | 2007-03-19 | Penstock |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007013061A1 true DE102007013061A1 (en) | 2008-09-25 |
Family
ID=39496052
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200710013061 Ceased DE102007013061A1 (en) | 2007-03-19 | 2007-03-19 | Penstock |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102007013061A1 (en) |
WO (1) | WO2008113805A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010017471A1 (en) * | 2010-06-18 | 2011-12-22 | Peter Leitholf | Flotation device for divers, comprises shield to protect user from direct flow forces, where multi-function unit is provided at shield, and is formed as elongate body |
WO2014052173A1 (en) * | 2012-09-28 | 2014-04-03 | Dow Global Technologies Llc | A composition, tape and composite pipe made therefrom and a method of producing composite pipe |
EP3290767A1 (en) * | 2016-09-02 | 2018-03-07 | ContiTech Schlauch GmbH | Hose line |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8803049U1 (en) * | 1987-09-17 | 1988-05-19 | Schmelzbasaltwerk Kalenborn - Dr.-Ing. Mauritz GmbH & Co KG, 5461 Vettelschoß | Pipe with inner lining, especially as protection against chemical attack at high operating pressures |
DE19841121A1 (en) * | 1998-09-09 | 2000-03-16 | Gewerk Keramchemie | Compound plastic pipe comprises an intermediate connector layer between the inner and outer pipe layers which consists of glass fibers with woven-in chain and/or weft elements made of a thermoplastic material |
DE4237477C2 (en) * | 1992-11-06 | 2003-03-20 | Gewerk Keramchemie | Tubular component with a leak monitoring device and method for its production |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1479111A1 (en) * | 1965-06-04 | 1969-05-29 | Dynamit Nobel Ag | Process for the production of two-layer or multi-layer molded parts |
DE10203123C1 (en) * | 2002-01-25 | 2003-02-06 | Sgl Acotec Gmbh | Compound pipe, to carry liquids and gases in chemical and other industries. has an outer layer of fiber reinforced plastics and an inner PTFE pipe layer, bonded together by an intermediate layer with a PFA surface |
US20050276945A1 (en) * | 2004-06-09 | 2005-12-15 | Muggli Mark W | Composite articles and methods of making the same |
-
2007
- 2007-03-19 DE DE200710013061 patent/DE102007013061A1/en not_active Ceased
-
2008
- 2008-03-18 WO PCT/EP2008/053231 patent/WO2008113805A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8803049U1 (en) * | 1987-09-17 | 1988-05-19 | Schmelzbasaltwerk Kalenborn - Dr.-Ing. Mauritz GmbH & Co KG, 5461 Vettelschoß | Pipe with inner lining, especially as protection against chemical attack at high operating pressures |
DE4237477C2 (en) * | 1992-11-06 | 2003-03-20 | Gewerk Keramchemie | Tubular component with a leak monitoring device and method for its production |
DE19841121A1 (en) * | 1998-09-09 | 2000-03-16 | Gewerk Keramchemie | Compound plastic pipe comprises an intermediate connector layer between the inner and outer pipe layers which consists of glass fibers with woven-in chain and/or weft elements made of a thermoplastic material |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010017471A1 (en) * | 2010-06-18 | 2011-12-22 | Peter Leitholf | Flotation device for divers, comprises shield to protect user from direct flow forces, where multi-function unit is provided at shield, and is formed as elongate body |
DE102010017471B4 (en) * | 2010-06-18 | 2014-07-10 | Peter Leitholf | Buoyancy aid for divers |
WO2014052173A1 (en) * | 2012-09-28 | 2014-04-03 | Dow Global Technologies Llc | A composition, tape and composite pipe made therefrom and a method of producing composite pipe |
EP3290767A1 (en) * | 2016-09-02 | 2018-03-07 | ContiTech Schlauch GmbH | Hose line |
Also Published As
Publication number | Publication date |
---|---|
WO2008113805A1 (en) | 2008-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |
Effective date: 20120308 |