DE1284746B - Double-walled wound tube, in particular made of extrudable material - Google Patents

Double-walled wound tube, in particular made of extrudable material

Info

Publication number
DE1284746B
DE1284746B DEP37645A DEP0037645A DE1284746B DE 1284746 B DE1284746 B DE 1284746B DE P37645 A DEP37645 A DE P37645A DE P0037645 A DEP0037645 A DE P0037645A DE 1284746 B DE1284746 B DE 1284746B
Authority
DE
Germany
Prior art keywords
double
walled
webs
tape
wall part
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
Application number
DEP37645A
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polva Nederland BV
Original Assignee
Polva Nederland BV
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 Polva Nederland BV filed Critical Polva Nederland BV
Publication of DE1284746B publication Critical patent/DE1284746B/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/151—Making tubes with multiple passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • B21C23/142—Making profiles
    • B21C23/145—Interlocking profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
    • 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
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/16—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics wound from profiled strips or bands
    • 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
    • F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
    • 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
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24661—Forming, or cooperating to form cells
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24744—Longitudinal or transverse tubular cavity or cell

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Claims (1)

zwischen dem äußeren und dem inneren Wandteil aufweisen, ohne daß sich störende Ungleichmäßigkeiten in der Belastbarkeit der Rohrwand ergeben. Es ist zwar bekannt, Rohre aus Wickelbändern 5 mit sich überlappenden Rändern herzustellen, doch wird dabei ein Band mit einem einfachen Z-Profil verwendet, so daß sich kein doppelwandiges Rohr mit Hohlräumen zwischen seinem inneren und äußeren Wandteil ergibt.have between the outer and the inner wall part without disturbing irregularities result in the resilience of the pipe wall. Although it is known, tubes made of winding tapes 5 with overlapping edges, but a tape with a simple Z-profile used so that there is no double-walled tube with cavities between its inner and outer wall part results. Für die Herstellung des erfindungsgemäßen doppelwandigen Rohres ist ein strangpreßbarer Werkstoff besonders geeignet; dabei kann beispielsweise das doppelwandige Band kontinuierstranggepreßt und anschließend in bekannter Weise zu dem doppel-An extrudable material is used for the production of the double-walled pipe according to the invention particularly suitable; for example, the double-walled strip can be continuously extruded and then in a known manner to the double Fig. 2 einen Querschnitt durch ein Band mit fachwerkartiger Struktur undFig. 2 shows a cross section through a band with a truss-like Structure and F i g. 3 einen Querschnitt durch ein Band mit einer weiteren möglichen inneren Struktur.F i g. 3 shows a cross section through a band with a further possible internal structure. Bei der in Fig. 1 dargestellten Ausführungsform ist der äußere Wandteil 1 mit dem inneren Wandteil 2 durch rechtwinklig zu den Wandteilen verlaufende Stege 3 verbunden. Die Stärke der Stege sowie die Anzahl der auf diese Weise zwischen denIn the embodiment shown in Fig. 1, the outer wall part 1 is with the inner wall part 2 connected by webs 3 extending at right angles to the wall parts. The strength of the webs as well as the number of this way between the Die Erfindung betrifft ein doppelwandiges Rohr,
insbesondere aus einem strangpreßbaren Werkstoff,
bestehend aus einem schraubenförmig gewickelten,
an seinen Rändern verbundenen doppelwandigen
Band, dessen äußerer und innerer Wandteil durch
abstandhaltende, in Band-Längsrichtung verlaufende
Stege verbunden sind.The invention relates to a double-walled pipe,
in particular made of an extrudable material,
consisting of a helically wound,
double-walled connected at its edges
Tape, whose outer and inner wall part through
spacing, running in the longitudinal direction of the tape
Bridges are connected. Derartige Rohre vereinen niedriges Gewicht und
hohe Belastbarkeit; derartige Rohre sind insbesondere für große Leitungsquerschnitte und für im io
Erdboden verlegte Leitungen, die hohen Boden- und
Wasserdrücken standzuhalten haben, von Vorteil.
Es ist ein solches Rohr bekannt, das aus einem
Band mit Doppel-T-Proffl schraubenförmig so gewickelt ist, daß der Doppel-T-Steg sich im wesent- 15 wandigen Rohr gewickelt werden, liehen in Radialebenen erstreckt und die Doppel- Ausführungsbeispiele von Wickelbändern für er-Such pipes combine low weight and
high resilience; Such pipes are particularly suitable for large cable cross-sections and for io
Cables laid in the ground, the high ground and
Having to withstand water pressures is an advantage.
There is such a pipe known that consists of a
Tape with double-T-profile is helically wound so that the double-T-bar is wound in the substantially 15-walled tube, borrowed extends in radial planes and the double embodiments of winding tapes for T-Arme in Axialrichtung verlaufen; die einander be- findungsgemäße Rohre sind in der Zeichnung darnachbarten Windungen sind entlang der in Umfangs- gestellt. Es zeigtT-arms run in the axial direction; the pipes according to the invention are adjacent in the drawing Windings are made along the in circumference. It shows richtung verlaufenden Kanten der Doppel-T-Armc Fig. 1 einen Querschnitt durch ein doppel-direction running edges of the double-T-armc Fig. 1 shows a cross section through a double miteinander verbunden. Bei dieser bekannten Kon- ao wandiges Band, struktion ist die erzielbare Festigkeit weitgehend von
der Güte und Festigkeit der Verbindungen entlang
der Kanten abhängig. Man muß deshalb, um genügend hohe Festigkeiten zu erzielen, die Anne des
Doppel-T-Profils ziemlich dick ausführen, also auf »5
einen Teil der an sich möglichen Querschnittsverminderung verzichten. Außerdem ist die mögliche
Breite der Bänder, bei der sich noch ausreichende
Festigkeitseigenschaften des I-Profils ergeben, begrenzt, so daß pro Einheit der Rohrlänge eine er- 30 Wandteilen 1 und 2 gebildeten Zellen kann der zu hebliche Anzahl von Windungen und Schweißnähten erwartenden Belastung angepaßt werden. In Vererforderlich ist. längerung des äußeren bzw. inneren Bandteils 1 Bei anderen bekannten doppelwandigen Rohr- bzw. 2 sind einander diagonal gegenüberliegende konstruktionen entsteht die Doppelwancügkeit da- Überlappungsstreifen 4 bzw«. 7 vorgesehen, und durch, daß nacheinander zwei Lagen aufeinander- 35 der diesen Überlappungsstreifen jeweils gegenübergeschichtet werden; bei solchen Rohren ist der liegende Wandteil ist mit einer entsprechenden Arbeitsaufwand bei der Herstellung erheblich höher stufenförmigen Aussparung 5 bzw. 6 versehen, in als bei einlagig gewickelten Rohren. welche beim Aufwickeln die Überlappungsstreifen Die Erfindung geht von der Aufgabe aus, ein der jeweils benachbarten Bandwindung passend eindoppelwandiges Rohr zu schaffen, das mit einem ein- 40 greifen. Die Überlappung erstreckt sich über eine erlagigen Wickelvorgang aus einem möglichst breiten hebliche Breite, so daß nach der z. B. durch Band, also mit möglichst wenig Windungen pro Ein- Schweißen oder Kleben erfolgten Verbindung etwa heit der Rohrlänge, in einfacher Weise durch Wickeln die gleiche Festigkeit erzielt wird wie in den übrigen hergestellt werden kann. sich nicht überlappenden Teilen der Bänder. Als Diese Aufgabe wird, ausgehend von einem Rohr 45 Beispiel sei angeführt, daß mit einem etwa 15 mm der eingangs angegebenen Art, erfindungsgemäß da- breiten doppelwandigen Band, bei dem die Stege 3 durch gelöst, daß an den Bandrändern in Ver- zwischen den Wandteilen 1 und 2 etwa 1,5 mm hoch längerung des äußeren bzw. inneren Wandteils ein- sind, ein Rohr mit einer lichten Weite von 70 cm ander diagonal gegenüberliegende Überlappungs- gewickelt werden kann, das einem etwa achtmal so streifen vorgesehen sind, die in entsprechende stufen- 50 großen äußeren Druck widersteht wie ein Rohr von förmige Aussparungen der Wandteile der jeweils gleichem Durchmesser und gleichem Gewicht, jebenachbarten Bandwindung passend eingreifen und doch mit massiver Wandung, mit diesen, z. B. durch Kleben, verbunden sind. Bei der Ausführungsform nach F i g. 2 verlaufen Bei dem erfindungsgemäßen Rohr erfolgt somit zwischen dem inneren und äußeren Wandteil 8 bzw. 9 die Verbindung zwischen den einzelnen Windun- 55 nicht nur senkrechte Stege, sondern auch schräge gen durch in Rohrachsrichtung verlaufende Über- Stege 10.connected with each other. In the case of this known Kon ao-walled tape structure, the achievable strength is largely of
the quality and strength of the connections
depending on the edges. Therefore, in order to achieve sufficiently high strengths, the Anne des
Make the double-T profile quite thick, i.e. on »5
forego some of the possible reduction in cross-section. Besides, the possible
Width of the ligaments that are still sufficient
Strength properties of the I-profile result, limited, so that per unit of pipe length a cell formed 30 wall parts 1 and 2 can be adapted to the excessive number of turns and weld seams expected load. In is required. Extension of the outer or inner band part 1 In other known double-walled pipe or 2 diagonally opposite constructions, the double option arises as overlap strips 4 or «. 7 provided, and by the fact that successively two layers of these overlap strips are stacked one on top of the other; In the case of such pipes, the lying wall part is provided with a corresponding amount of work in the production of a considerably higher step-shaped recess 5 or 6 than in the case of pipes wound in a single layer. which the overlap strips when winding up. The overlap extends over a layered winding process from as wide a substantial width as possible, so that after the z. B. by tape, so with as few turns per one welding or gluing made connection approximately called the pipe length, in a simple manner by winding the same strength can be achieved as in the rest. non-overlapping parts of the bands. As this object, starting from a pipe 45 example, it is stated that with an approximately 15 mm wide double-walled band according to the invention, in which the webs 3 are achieved at the band edges in inter-wall parts 1 and 2 are about 1.5 mm high extension of the outer and inner wall part, a tube with a clear width of 70 cm can be wound on the diagonally opposite overlap, which are provided about eight times as strips, which are in corresponding step-50 large external pressure resists like a tube of shaped recesses in the wall parts of the same diameter and weight, intervening in the adjacent tape winding and yet with massive walls, with these, for. B. by gluing connected. In the embodiment according to FIG. 2 run In the pipe according to the invention, the connection between the individual turns 55 is not only vertical webs, but also inclined webs through cross webs 10 running in the direction of the pipe axis between the inner and outer wall parts 8 and 9, respectively. lappungsstreifen, so daß sich eine gegen innere und Bei der Ausführungsform nach Fig. 3 sind derlap strips, so that one against the inner and In the embodiment of FIG. 3 are the äußere Druckbeanspruchungen sehr stabile Ver- äußere und der innere Wandteil 11 bzw. 12 durch bindung ergibt. Die Überlappungsstreifen fügen sich bogenförmige Stege 13 derart miteinander verin die stufenförmigen Aussparungen, mit denen sie 60 bunden, daß sich zwischen den Stegen Zellen mit zusammengefügt sind, so ein, daß glatte Ver- kreisförmigem Querschnitt ergeben, bindungsbereiche entstehen, die etwa die gleichenexternal pressure loads very stable outer and inner wall part 11 and 12 by bond results. The overlap strips join arc-shaped webs 13 with one another in this way the step-shaped recesses with which they tied 60, that between the webs cells with are joined together in such a way that smooth circular cross-section results, bonding areas arise that are roughly the same Festigkeitseigenschaften wie die Wandteile zwischen Patentanspruch:Strength properties like the wall parts between claim: den Verbindungsstellen haben. Doppelwandiges Rohr, insbesondere aus einemthe liaison offices. Double-walled tube, in particular from one Für die Herstellung des erfindungsgemäßen Rohres 65 strangpreßbaren Werkstoff, bestehend aus einem kann man auch breite Bänder verwenden, die nicht schraubenförmig gewickelten, an seinen RändernFor the production of the tube 65 according to the invention extrudable material, consisting of a one can also use wide ribbons, which are not helically wound, on its edges nur wie bei einem I-Profil einen Steg, sondern verbundenen doppelwandigen Band, dessen äuße-just like an I-profile a web, but connected double-walled band, the outer mehrere mit Abstand nebeneinanderliegende Stege rer und innerer Wandteil durch abstandhaltende,several spaced-apart webs rer and inner wall part by spacing, in Band-Längsrichtung verlaufende Stege verbunden sind, dadurch gekennzeichnet, daß an den Bandrändern in Verlängerung des äußeren bzw. inneren Wandteiles (1 bzw. 2) einander diagonal gegenüberliegende Überlappungsstreifen (4 bzw. 7) vorgesehen sind, die in entsprechende stufenförmige Aussparungen (5 bzw. 6) der Wandteile der jeweils benachbarten Bandwindung passend eingreifen und mit diesen, z. B. durch Kleben, verbunden sind.webs running in the longitudinal direction of the tape are connected, characterized in that that at the tape edges in extension of the outer or inner wall part (1 or 2) each other diagonally opposite overlap strips (4 or 7) are provided, which in corresponding step-shaped recesses (5 or 6) in the wall parts of the respectively adjacent band winding intervene appropriately and with these, z. B. by gluing connected. Hierzu 1 Blatt Zeichnungen 1 sheet of drawings
DEP37645A 1964-09-14 1965-09-13 Double-walled wound tube, in particular made of extrudable material Pending DE1284746B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL646410674A NL150210B (en) 1964-09-14 1964-09-14 BENDING STRIP FOR SCREW-SHAPED WRAPPING INTO A TUBE.

Publications (1)

Publication Number Publication Date
DE1284746B true DE1284746B (en) 1968-12-05

Family

ID=19791007

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP37645A Pending DE1284746B (en) 1964-09-14 1965-09-13 Double-walled wound tube, in particular made of extrudable material

Country Status (5)

Country Link
US (1) US3495628A (en)
BE (1) BE669613A (en)
DE (1) DE1284746B (en)
GB (1) GB1124656A (en)
NL (1) NL150210B (en)

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US4903736A (en) * 1987-05-23 1990-02-27 Vobau Artur Baston Gesellschaft Fur Vorrichtungsbau Mit Beschrankter Haftung Hollow cylindrical body made from spirally wound extruded plastic strip material

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Also Published As

Publication number Publication date
GB1124656A (en) 1968-08-21
BE669613A (en) 1965-12-31
NL6410674A (en) 1966-03-15
NL150210B (en) 1976-07-15
US3495628A (en) 1970-02-17

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