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WO2009071501A1 - Tuyau pourvu d'une surface latérale extérieure modifiée par un profil de surface - Google Patents

Tuyau pourvu d'une surface latérale extérieure modifiée par un profil de surface Download PDF

Info

Publication number
WO2009071501A1
WO2009071501A1 PCT/EP2008/066502 EP2008066502W WO2009071501A1 WO 2009071501 A1 WO2009071501 A1 WO 2009071501A1 EP 2008066502 W EP2008066502 W EP 2008066502W WO 2009071501 A1 WO2009071501 A1 WO 2009071501A1
Authority
WO
WIPO (PCT)
Prior art keywords
nubs
pipe according
tube
circumferential surface
pipe
Prior art date
Application number
PCT/EP2008/066502
Other languages
German (de)
English (en)
Inventor
Wolfgang Berger
Antje Clasen
Original Assignee
Fitr-Gesellschaft Für Innovation Im Tief- Und Rohrleitungsbau Weimar M.B.H.
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 Fitr-Gesellschaft Für Innovation Im Tief- Und Rohrleitungsbau Weimar M.B.H. filed Critical Fitr-Gesellschaft Für Innovation Im Tief- Und Rohrleitungsbau Weimar M.B.H.
Publication of WO2009071501A1 publication Critical patent/WO2009071501A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal
    • F16L9/04—Reinforced pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/124—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and being formed of pins

Definitions

  • the invention relates to a tube with a modified by a surface profile outer surface according to the preamble of claim 1.
  • Such pipes are widely used in practice. They play an important role in the transport of fluid media and in the transfer of heat energy between a medium flowing inside the tube and an external environment.
  • the use of these pipes is determined by basic parameters such as cross section, pipe material, surface quality, inside and outside diameter, wall thickness and pressure rating.
  • Tubes are made of very different materials, such as steel, ceramic, light metal or plastic, and are usually not flexible.
  • a tube is generally designed as an elongated hollow cylinder having a base and top surface and a lateral surface as a wall.
  • the length of the hollow cylinder is much larger than its cross section.
  • Both the inside and the outside of the wall can be provided with surface modifications.
  • Patent specification AT 329 608 B describes helical ribs in the interior of the tube for generating turbulence without an increase in the flow resistance.
  • a mounting element in the form of a wire spiral is described, with which the heat transfer performance is to be optimized.
  • Ribs are also in DE 600 05 beautiful profile, which can increase the heat exchange coefficient.
  • the ribs can also be incorporated in connection with a profile insert in the tube interior, as described in WO 1995 025 937 Al.
  • Moldings and structures on the outer tube surface are described, for example, in the publications DE 100 27 71 B, DE 4 404 357 C1 and DE 69 526 907 T2. These are either formed as a corrugated metal band wrapped helically around the tube wall, or annular or helical circumferential ribs, the latter having notches which increase their surface area.
  • the object is achieved with a tube with a surface profile modified by a outer circumferential surface, wherein the tube according to the invention characterized in that the surface profile of the outer circumferential surface outgoing, distributed on the outer circumferential surface pimples has.
  • the thus shaped outer circumferential surface thus extends into the environment of the tube, whereby an intimate thermal contact between the outer circumferential surface and the environment arises at a considerably enlarged surface.
  • the inner circumferential surface expediently has a smooth surface profile.
  • the knobs are substantially parallel to each other.
  • the nubs are oriented substantially perpendicular to the outer circumferential surface.
  • an angular orientation of the knobs is also possible in a further variant.
  • the nubs can be arranged to each other in different ways.
  • the nubs are evenly spaced from each other.
  • a regular arrangement of the knobs in a the outer circumferential surface at least partially covering pattern.
  • the nubs form an irregular pattern, which covers the outer circumferential surface in sections.
  • the knobbed shape may vary.
  • the nubs on a prismatic shaped knob shaft In further embodiments, the nub shaft is conical or pyramid-shaped. These different shapes can be supplemented by a number of different Noppenkopfformen.
  • the knobs have a flattened knobbed head.
  • the knobbed head is sharpened.
  • the knobbed head is rounded.
  • knobs may be hemispherical in shape.
  • FIG. 1 shows a longitudinal section through an exemplary knobbed tube
  • Fig. 2 is an external view of the tube of FIG. 1,
  • FIG. 3 shows a cross section of the tube from FIG. 1 and 2
  • FIG. 5 is an external view of a tube with helically arranged knobs
  • FIG. 6 is an external view of a tube with radially and rosette-shaped nubs
  • Fig. 7 is a series of exemplary studded shapes.
  • Fig. 1 shows a longitudinal section through an exemplary studded tube.
  • the tube shown here has an inner circumferential surface 1 and an outer lateral surface 2. This is occupied by a plurality of nubs 3, between which cavities 4 are located.
  • the inner circumferential surface 1 is smooth throughout and has no formations.
  • the nubs 3 can be formed both macroscopically and microscopically be. They form on the outside of the tube by their shape an area with high and deep, or convex and concave shaped areas.
  • the outside of the pipe can consist of the base material of the pipe wall in a first embodiment.
  • a pipe which is in itself smooth is provided with a nub surface applied in a layer-like manner on its lateral surface.
  • the nubs can be made in the latter case of a material different from the material of the pipe wall.
  • the knobs may be oriented differently with respect to the outer circumferential surface.
  • all longitudinal axes of the studs are oriented perpendicular to the pipe wall with respect to the longitudinal direction of the tube, wherein the studs are arranged substantially parallel to each other.
  • the nubs have in this example Noppenköpfe 5 in a rounded shape.
  • the knobs can be distributed in different ways on the outer circumferential surface.
  • the nubs are arranged in rows of two each extending along the longitudinal axis of the pipe such that, in cross-section, a line shown in FIG. 3 cross figure results.
  • Such an arrangement of the nubs is recommended when the tube is to be flowed through by a surrounding medium in the longitudinal direction.
  • this knob arrangement is also advantageous for a pipe that is to be installed in a solid backfilling, for example in the soil.
  • the nubs arranged in a linear manner can thus be combined to form a nip strand 4a running substantially in the tube longitudinal direction.
  • Fig. 5 shows a nub arrangement in the form of a double helix 6.
  • the nubs are radially from the outer surface of the tube from.
  • the pitch of the double helix ie their pitch, depends on the intended conditions of use of the pipe.
  • Such a doping Pelhelix is advantageous if a flowing outside of the tube medium is deflected with a flow direction perpendicular to the tube longitudinal axis and partially guided along the pipe, for example, to intensify thermal contact.
  • Fig. 6 shows a knob arrangement in a rosette shape.
  • Each individual rosette 7 consists of radially outgoing from the outer surface, distributed around the pipe circumference knobs.
  • the nubs of a rosette are parallel to the next adjacent knob of the next rosette.
  • Such an embodiment is particularly well suited for heat transfer with an outer, in the direction of the tube longitudinal axis flowing medium or with a surrounding the pipe landfill, for example, the soil.
  • Fig. 7 shows some exemplary stud shapes.
  • a rounded knobhead 5 has already been mentioned.
  • Such a knobbed head is expediently combined with a cylindrical knob shaft 8.
  • the cylindrical nub shaft can also be combined with a pointed, in particular conical, nub head 9.
  • Such a sharpened knobbed shape allows piercing or skewing of mat-shaped sheaths to isolate or even attach heat-conducting materials to the outside of the tube.
  • the nubs formed in this way are rod-shaped or finger-shaped from the outside of the tube and extend into the environment, with an intense thermal contact can be achieved.
  • the cylindrical nub shaft 8 can also have a greatly shortened or vanishing length.
  • a rounded, strongly shortened, in the tendency hemispherical, knob 8a is formed.
  • Fig. 7 shows an example of a nub with a triangular nub shaft 10 and a pyramidal, pointed knobbed head 11.
  • the triangular prism is of course a prism with any number of corners, in particular a four- or hexagonal prism possible.
  • the hexagonal shape has the advantage that the knob can be grasped with a wrench or a suitable pliers and tightened on the tube outside in corresponding threaded holes or can be removed from these.
  • the nub shaft can also be designed as a conical or truncated cone-shaped nub shaft 12 or a pyramid-shaped or pyramid-truncated nub shaft 13.
  • the knobbed head is not formed, wherein the knobbed shaft each terminates with a plane surface.
  • Such conical or pointed, reinforced at the base knobbed shapes are particularly useful when the nubs against shear and bending forces resistant form is required.
  • both rigid and flexible materials are available for given nip thicknesses and lengths.
  • Suitable rigid materials are, in particular, the metallic materials customary in pipeline construction. This can be mainly steel materials, but also zinc, copper or lead alloys, but also glass materials.
  • Flexible materials can be used in the form of rubber, plastics or composite materials, in particular coated metal wires or other fiber materials.
  • knob stem triangular

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

L'invention concerne un tuyau pourvu d'une surface latérale extérieure (2) modifiée par un profil de surface. Ce tuyau se caractérise en ce que le profil de surface présente des tétons (3) qui s'étendent à partir de la surface latérale extérieure et sont répartis sur celle-ci.
PCT/EP2008/066502 2007-12-05 2008-12-01 Tuyau pourvu d'une surface latérale extérieure modifiée par un profil de surface WO2009071501A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007058383.6 2007-12-05
DE102007058383 2007-12-05
DE102008030423.9 2008-06-26
DE102008030423.9A DE102008030423B4 (de) 2007-12-05 2008-06-26 Rohr mit einer durch Noppen Oberflächenprofil-modifizierten Außenmantelfläche

Publications (1)

Publication Number Publication Date
WO2009071501A1 true WO2009071501A1 (fr) 2009-06-11

Family

ID=40680172

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/066502 WO2009071501A1 (fr) 2007-12-05 2008-12-01 Tuyau pourvu d'une surface latérale extérieure modifiée par un profil de surface

Country Status (2)

Country Link
DE (1) DE102008030423B4 (fr)
WO (1) WO2009071501A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102109068A (zh) * 2011-03-09 2011-06-29 文革 凹凸管
DE102013109199A1 (de) * 2013-08-26 2015-02-26 Witzenmann Gmbh Leitung mit Wölbstruktur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017216956A1 (de) * 2017-09-25 2019-03-28 Mahle International Gmbh Wärmeübertrager

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE883612C (de) * 1950-10-24 1953-07-20 David Dalin Waermeaustauscher
FR1495714A (fr) * 1965-09-30 1967-09-22 échangeur de chaleur de grande surface et procédé pour sa fabrication
FR2137153A1 (fr) * 1971-05-14 1972-12-29 Saf Ste Artistique Fse
US3993887A (en) * 1973-01-29 1976-11-23 Trw Inc. Stud and method of welding same to a boiler tube
JPS60263094A (ja) * 1984-06-07 1985-12-26 Mitsubishi Heavy Ind Ltd 針状フイン付熱交換管及びその製造方法
EP1318371A2 (fr) * 2001-12-06 2003-06-11 SDK-Technik GmbH Surface d'échange de chaleur avec microstructures galvanisées avec des protubérances
EP1418388A2 (fr) * 2002-11-07 2004-05-12 Oxford Magnet Technology Limited Réfrigérateur à tube pulsé
JP2004360945A (ja) * 2003-06-02 2004-12-24 Kobe Steel Ltd 流下液膜式熱交換器用伝熱管
DE102005043330A1 (de) * 2005-01-24 2006-07-27 Franz Haslinger Vorrichtungen zur Eisspeicherung und Direktkühlung

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT48697B (de) 1910-05-13 1911-06-26 Carl Graehn Aus zwei Längsteilen bestehende Form zur Herstellung von Pfosten aus Beton o. dgl.
DE835156C (de) * 1947-02-24 1952-03-27 Andre Huet Waermeaustauschrohr
DE1002771B (de) * 1952-01-05 1957-02-21 Escher Wyss Gmbh Waermeaustauschrohr mit schraubenfoermig aufgewickeltem gewelltem Metallband
DE1122971B (de) * 1956-05-21 1962-02-01 Bundy Tubing Co Waermeaustauschrohr aus einem rohrfoermig gebogenen Metallstreifen und einer in die Laengsnaht eingefuegten Metallrippe
DE2209325C3 (de) * 1970-05-18 1978-08-03 Noranda Metal Industries Inc., Bellingham, Wash. (V.St.A.) Wärmeaustauschrohr
US3779312A (en) * 1972-03-07 1973-12-18 Universal Oil Prod Co Internally ridged heat transfer tube
HU199979B (en) * 1986-04-21 1990-03-28 Energiagazdalkodasi Intezet Method and heat-exchanger insert for improving the heat transfer of media flowing in the tubes of heat exchanger and having inhomogeneous composition and/or inhomogeneous physical state
DE4345045A1 (de) * 1993-12-31 1995-07-06 Hoechst Ag Wärmeaustauschrohr mit Einbauelement
DE4404357C2 (de) * 1994-02-11 1998-05-20 Wieland Werke Ag Wärmeaustauschrohr zum Kondensieren von Dampf
DE9405062U1 (de) * 1994-03-24 1994-05-26 Hoval Interliz Ag, Vaduz-Neugut Wärmetauscherrohr für Heizkessel
CA2161296C (fr) * 1994-11-17 1998-06-02 Neelkanth S. Gupte Tube de transfert thermique
FR2795168B1 (fr) * 1999-06-16 2001-08-03 Ciat Sa Element d'echange thermique pourvu de nervures et son procede de fabrication, echangeur de chaleur pourvu d'un tel element
DE10041919C1 (de) * 2000-08-25 2001-10-31 Wieland Werke Ag Innenberipptes Wärmeaustauschrohr mit versetzt angeordneten Rippen unterschiedlicher Höhe
DE10210016B9 (de) * 2002-03-07 2004-09-09 Wieland-Werke Ag Wärmeaustauschrohr mit berippter Innenoberfläche

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE883612C (de) * 1950-10-24 1953-07-20 David Dalin Waermeaustauscher
FR1495714A (fr) * 1965-09-30 1967-09-22 échangeur de chaleur de grande surface et procédé pour sa fabrication
FR2137153A1 (fr) * 1971-05-14 1972-12-29 Saf Ste Artistique Fse
US3993887A (en) * 1973-01-29 1976-11-23 Trw Inc. Stud and method of welding same to a boiler tube
JPS60263094A (ja) * 1984-06-07 1985-12-26 Mitsubishi Heavy Ind Ltd 針状フイン付熱交換管及びその製造方法
EP1318371A2 (fr) * 2001-12-06 2003-06-11 SDK-Technik GmbH Surface d'échange de chaleur avec microstructures galvanisées avec des protubérances
EP1418388A2 (fr) * 2002-11-07 2004-05-12 Oxford Magnet Technology Limited Réfrigérateur à tube pulsé
JP2004360945A (ja) * 2003-06-02 2004-12-24 Kobe Steel Ltd 流下液膜式熱交換器用伝熱管
DE102005043330A1 (de) * 2005-01-24 2006-07-27 Franz Haslinger Vorrichtungen zur Eisspeicherung und Direktkühlung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102109068A (zh) * 2011-03-09 2011-06-29 文革 凹凸管
DE102013109199A1 (de) * 2013-08-26 2015-02-26 Witzenmann Gmbh Leitung mit Wölbstruktur

Also Published As

Publication number Publication date
DE102008030423B4 (de) 2016-03-03
DE102008030423A1 (de) 2009-06-18

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