EP1091623A2 - Conducteur chauffant muni d'un élément de raccord et/ou d'un élément de fermeture ainsi que son procédé de fabrication - Google Patents

Conducteur chauffant muni d'un élément de raccord et/ou d'un élément de fermeture ainsi que son procédé de fabrication Download PDF

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Publication number
EP1091623A2
EP1091623A2 EP00121536A EP00121536A EP1091623A2 EP 1091623 A2 EP1091623 A2 EP 1091623A2 EP 00121536 A EP00121536 A EP 00121536A EP 00121536 A EP00121536 A EP 00121536A EP 1091623 A2 EP1091623 A2 EP 1091623A2
Authority
EP
European Patent Office
Prior art keywords
heating
heating conductor
area
plastic
fluoropolymer
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.)
Granted
Application number
EP00121536A
Other languages
German (de)
English (en)
Other versions
EP1091623B1 (fr
EP1091623A3 (fr
Inventor
Jürgen Meisiek
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.)
Airbus Operations GmbH
Original Assignee
Airbus Operations GmbH
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 Airbus Operations GmbH filed Critical Airbus Operations GmbH
Publication of EP1091623A2 publication Critical patent/EP1091623A2/fr
Publication of EP1091623A3 publication Critical patent/EP1091623A3/fr
Application granted granted Critical
Publication of EP1091623B1 publication Critical patent/EP1091623B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • H05B3/565—Heating cables flat cables

Definitions

  • the invention relates to a heat conductor with a connecting element and / or a Closing element and a method for producing a connecting element and / or a terminating element on a heating conductor.
  • Such heating conductors are used for heating piping systems, in particular on water pipes, water tanks, valves and fittings as well as on components in which liquid products are transported in order to achieve active frost protection.
  • freezing of the water pipes is possible without adequate frost protection. This could lead to the failure of the entire fresh water or wastewater system, making it impossible, for example, for the passengers to use the toilet.
  • the heating tapes used for the heating conductor arrangements have a heating element with connecting wires (strands). The heating element is protected by an insulating layer made of fluoropolymer plastic.
  • a protective conductor braid is arranged on this inner jacket and a plastic outer protective jacket envelops this heating conductor.
  • the heating tapes are usually offered by the meter and must be assembled for the corresponding purpose.
  • a connection piece is to be made at the end of the heating tape, the connecting wires being first exposed on the outside and inside stripped heating tape and the heating element being shortened so that the connecting wires reach a sufficient length that then used as a connecting line.
  • the protective conductor braid must be combed out and twisted and is connected to an additional extension cable. The lengths of the connecting wires and the extension cable from the protective braid are adjusted so that they are flush.
  • the transition area between the heating tape and the connection lines must be sealed pressure-tight in a complex process and made resistant to chemical influences and heat changes, since the factors influencing vibrations, heat changes, low pressure conditions and the effects of chemicals must be taken into account for use in an aircraft.
  • at least one adhesive / casting compound is applied manually and covered with a shrink tube.
  • a complex adhesive pretreatment is necessary, whereby the following steps must be carried out in order to achieve a sufficient connection between the epoxy adhesive and the FEP fluoropolymer plastic surface from the heating tape: outer and inner jacket on rough; Clean the adhesive area with a cold cleaner, eg ethanol; Apply etchant, eg Tetra Etch and let it work; Rinsing with deionized water and subsequent cleaning with cold cleaner; Drying the heating tape in a convection oven.
  • the epoxy adhesive and the heat shrink tubing must be applied within a limited period of time. Since several shrink sleeves are glued in several layers, the time required to manufacture this connection area is multiplied.
  • connection technology here is to provide the transition area with a divided housing, the interior of the housing being filled on all sides with an adhesive / potting compound after the connections have been completed, in order to ensure protection against moisture and liquid ingress.
  • adhesive pretreatment for example using an etching technique, is also necessary in this solution.
  • the invention is therefore based on the object of a generic heat conductor to be provided with a connecting element and / or a closing element, which eliminates the disadvantages mentioned above and especially for the Use in the field of aircraft water systems is suitable and opposite the influencing factors vibrations, heat changes, low pressure conditions and Effects of chemicals achieved sufficient sealing effect and penetration of moisture or liquids in the connection area of the heating conductor prevented.
  • One method of making such a heat conductor is specify.
  • a heating conductor 1 the basic element of a heating conductor 1 is a heating element 2 evident.
  • the heating element 2 consists in the embodiment shown a plastic, especially fluoropolymer (FEP) / carbon mixture tape 3, a so-called heating tape, which of heating tape strands 4 and 5, preferably formed as a copper or nickel strand.
  • FEP fluoropolymer
  • a heating conductor connection 1A and 1B are the heating tape strands 4 and 5 exposed and are used as connecting wires for connection to the supply voltage of the circuit.
  • the heating conductor 1 are already at their Manufactured in the required lengths. The length of the heating conductor results, as required, from those to be installed and heated Water pipes.
  • Heating element 2 In a solution according to the invention, this is usually done in Heating element 2 by the meter not separated in the connection area, instead, only the strands 4 and 5 are exposed and a separation of the Heating conductor 1 is only carried out in a later manufacturing step. That's how it is made not only the heating conductor connection 1A, but also the Another heating conductor connection 1B possible.
  • Fig. 1 image b) it can be seen that after the heating tape strands 4 and 5 are exposed, an extrusion process is carried out and a layer 6 made of fluoropolymer plastic (FEP - fluorine-ethylene-propylene) onto the heating element 2 (consisting of heating tape 3 and connecting wires 4 and 5) is applied.
  • FEP fluoropolymer plastic
  • an insulating and protective layer 6 is produced, which in particular in the transition region 7 of the layer 6 from the heating tape 3 to the exposed heating tape strands 4 and 5 is designed to be water-tight and pressure-tight and thus an improved sealing behavior at the heating conductor connections 1A and 1B is guaranteed. All extrusion processes are carried out under vacuum to avoid air pockets.
  • FIG. 1 picture c) shows a further process step for producing the heating conductor 1 with a heating conductor connection 1A (or 1B).
  • a screen braid 8 is applied to the heating element 2.
  • the screen braid 8 preferably consists of a spindle-wound copper / nickel braid. This screen braid 8 must be cut back in the area of the heat conductor connections 1A and 1B, as can be seen in FIG. 1, image d).
  • An additional extension line 9 provided with an FEP jacket is connected to the braided shield 8. This can be done in a conventional manner by combing out and twisting the braid and connecting it to the extension line or - as shown in FIG.
  • connection 9A or 9B is welded or spliced to the corresponding side of the screen braid 8A or 8B.
  • the extension line 9 is fixed in place in the manner shown with adhesive.
  • the connection wires 4 and 5 and the extension line 9 are fixed by means of a Teflon tape 10A and 10B.
  • FIG. 1 image e
  • the one completed after process steps a) to d) Heating conductor 1 can be seen, which is finally provided with a protective jacket 11 becomes.
  • This protective jacket 11 is also made of fluoropolymer plastic (FEP) and is extruded onto the heating conductor 1 and the heating conductor connections 1A and 1B applied, the connecting wires 4, 5 and Extension line 9 are completely encased. After extruding in the area of the connecting wires 4 and 5 and the extension line 9 Heating element 2 cut. The heating conductor connection 1A or 1B can now to get finished.
  • FEP fluoropolymer plastic
  • Fig. 1, picture f) shows the completed heating conductor 1 with the heating conductor connection 1A.
  • the ends of lines 4, 5 and 9 are freed from the complete FEP sheathing 11 and 6 and only each separate line remains provided with an FEP protective layer.
  • Each line 4, 5 and 9 is provided at its end with individual plug contacts 12, 13 or 14. These contacts are preferably crimped on.
  • the free cable ends 4, 5 and 9 are provided with colored (red, white and blue) shrink tubes 15, 16, 17 for identification.
  • the exit area 18 of the connecting wires 4 and 5 and the extension line 9 from the FEP protective jacket 11 is extruded again or heat-welded.
  • the area 11A is created. Sufficient tightness with respect to the screen braid 8 is thus produced. Markings can be applied to the protective jacket 11 or the area 11A in order to facilitate identification when the heating conductor 1 is used again.
  • the next work step can be described with reference to FIG. 2, image g).
  • the screen braid 8 is also cut back here, but over the Area of the exposed heating tape strands 4 and 5, so that also a part from the heating tape 3 is no longer covered by the braid 8. Can be seen the areas 8C and 8D of the braided screen 8, which the cut back Shield braid 8 in the region of the end element 1C or 1D.
  • a connection of the Braid 8C or 8D with an extension cable is on the end element 1C or 1D not necessary, so that the wire ends of the Shield braid 8 can be completely covered.
  • the connection wires (Heating cable strands) 4 and 5 are also shortened so that an end region of the Termination elements 1C and 1D completely free of strands and thus of current-carrying Components.
  • FIG. 2 picture i) it can be seen that an outer protective jacket 20 by a final extrusion process over the screen braid 8 and the areas the closure elements 1C or 1D is applied. After extruding the heating element 2 can be cut through between the terminating elements 1C and 1D become. The separation points 20A and 20B become the final seal filled with FEP plastic material and welded. By applying heat the outer protective sheath 20 and the FEP layer 6 become so together connected that a final tightness is achieved and a bond with an additional shrink tube is no longer necessary.
  • the heating conductor 1 is with a second embodiment of one end arranged connecting element 1F, showing the manufacturing steps aa) to ii) can be seen.
  • Fig. 3 picture aa) shows the basic element of a Schuleiters 1, a heating element 2, as it was already in the description of Fig.1, Image a) was explained in detail.
  • the connection element 1F does not provide two heating conductor connections to be manufactured at the same time as is the case with heating conductor connections 1A and 1B of the first embodiment is the case.
  • picture cc shows a further process step for the production of the heating conductor 1 with the heating conductor connection 1F.
  • the heating element 2 consisting of the heating tape 3 and heating tape strands 4 and 5, is cut to the appropriate length and the heating tape strands 4 and 5 are exposed in the connection area so that they can be used as connection wires.
  • a screen braid 8 is applied to the insulating layer 6.
  • the screen braid 8 preferably consists of a spindle-wound copper / nickel braid. This screen braid 8 must be cut back in the area of the heating conductor connection 1F.
  • corona treatment of the heating band or heating matrix end face 3A and the extrusion layer 6 is provided in this area.
  • a surface treatment or roughening of the layer is achieved by means of electron bombardment in order to achieve sufficient adhesion for the next step, the application of an epoxy layer 21 or a butyl plastic filling compound.
  • this epoxy layer 21 can be seen, which was applied in the area of the heating matrix end face 3A.
  • This epoxy layer 21 is applied, for example, by immersing the heating conductor 1 with the corresponding line end in an epoxy solution / epoxy adhesive and then letting it dry.
  • a butyl plastic filler can be applied to the pipe end and the splice area.
  • the epoxy layer 21 or the butyl layer is an additional security that no moisture can penetrate into the end face of the heating conductor 1 (arc tracking) and the functionality of the heating conductor 1 is not impaired.
  • image ff shows the state of the heating conductor 1, in which an additional extension line / Kapton line 26 provided with an FEP sheath is connected to the braided shield 8. This can be done in a conventional manner by combing out and twisting the braid and connecting it to the extension line 26 by means of through connector 23 and then covering it with a shrink tube.
  • the twisted end of the screen braid 8 is designated by the reference symbol 8E.
  • the next step shows the use of an FEP molded part 27, which is pulled over the connection area of the heating conductor 2 and the three through connectors 23 together with lines 24, 25 and 26 to center and a reproducible series connection to reach.
  • the molded part 27 is preferably designed as a hood which can be pulled over the connection area of the connecting wires 4 and 5 and the braided shield 8 with the connected lines 24, 25 and 26.
  • the end 27A of the molded part 27 facing the heating tape 3 has an inner diameter such that it can be pushed over the epoxy layer 21 and abuts the Teflon tape 22.
  • the outer diameter of the molded part 27 is adapted at the end 27A to the outer diameter of the Teflon wrapping 22 in order to achieve a smooth transition.
  • image hh is the production of a second extrusion layer 29 made of FEP material on the heating tape 3 and the cylindrical part of the molded part 27 evident.
  • image hh is the production of a second extrusion layer 29 made of FEP material on the heating tape 3 and the cylindrical part of the molded part 27 evident.
  • image hh is the production of a second extrusion layer 29 made of FEP material on the heating tape 3 and the cylindrical part of the molded part 27 evident.
  • At the transition area 30 between the extrusion layer 29 and the FEP molded part 27 and in the fusion region 28 between the molded part end 27B and line sheathing of lines 24, 25 and 26 will be the FEP material fused together.
  • go to the line ends the lines 24, 25 and 26 plug contacts 31, 32 and 33 crimped and the water- and pressure-tight connection element 1F on the heating conductor 1 is essentially finished.
  • the heating conductor 1 is to be marked.
  • An identifier 34 can be printed on the heating conductor 1.
  • Part numbers are provided.
  • the plug contacts 31, 32, 33 are covered with shrink sleeves, which are also labeled, such as Parts markings are provided.
  • the heating conductor 1 is with a second embodiment of one end arranged termination element 1G showing the manufacturing steps kk) to nn).
  • image aa) to cc) For the production of an end element 1G on the heating conductor 1 are initially the same steps as for the production from the connecting element 1F according to FIG. 3, image aa) to cc) ,. So are in the first step for the heating conductor 1 on the heating element 2 with the heating tape 3 in the end area of the heating conductor 1 to expose the heating tape strands 4 and 5 (Fig. 3, Figure aa)), a layer 6 made of fluoropolymer plastic (FEP) applied by extrusion ( Figure bb)) and a screen braid 8 is over the FEP layer 6 drawn (image cc)).
  • FEP fluoropolymer plastic
  • the prepared heating conductor end is shown in picture kk).
  • a corona treatment of the heating band or heating matrix front side 3A and the extrusion layer 6 are provided in this area.
  • the corona treatment becomes a surface treatment or a roughening of the Layer obtained by electron bombardment in order for the next step, the Application of an epoxy layer 35 or a butyl plastic compound, sufficient To achieve liability.
  • this epoxy layer 35 can be seen, which in the area of Heating matrix end face 3A was applied.
  • This epoxy layer 35 will for example, applied by heating conductor 1 with the appropriate Dip the cable end in an epoxy solution / epoxy adhesive and then can dry.
  • the epoxy layer 35 is also the application of one Butyl plastic mass possible.
  • the epoxy layer 35 or the butyl layer is an additional security that no moisture in the end face of the heating conductor 1 can penetrate (arc tracking) and thus the functionality of the Schuteiter 1 is affected.
  • FIG 4, figure mm) shows the application of a further process step Fixing the screen braid 8 by means of a Teflon tape 36.
  • the braid 8 becomes Teflon fixation 36 on the first extrusion layer 6 attached.
  • the heating tape strands 4 and 5 are each using a Teflon tube 37 and 38 isolated.
  • An end cap 39 made of FEP material is pushed onto the prepared heating conductor end, the open end 39A can preferably be pushed so far that it is attached to the Teflon fixation 36 is present.
  • the closed end 39B of the end cap is preferably rounded. With the use of such an FEP molded part as an end cap 39, one is in each case reproducible series completion reached. If butyl plastic filler against the penetration of moisture is used, this is in the hollow areas of the End cap 39 introduced.
  • the last process step for the production of the closure element 1G on Heating conductor 1 can be explained with reference to FIG. 4, picture nn).
  • a second extrusion layer 40 becomes the entire end region of the heating conductor 1 generated.
  • the FEP layer 40 is in a melting range 41, at least the cylindrical end region of the end cap 39 (before the rounding begins) comprises, heat-welded to the extrusion layer 40.

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  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Processing Of Terminals (AREA)
EP00121536A 1999-10-09 2000-09-30 Conducteur chauffant muni d'un élément de raccord et/ou d'un élément de fermeture ainsi que son procédé de fabrication Expired - Lifetime EP1091623B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19948819A DE19948819C2 (de) 1999-10-09 1999-10-09 Heizleiter mit einem Anschlußelement und/oder einem Abschlußelement sowie ein Verfahren zur Herstellung desselben
DE19948819 1999-10-09

Publications (3)

Publication Number Publication Date
EP1091623A2 true EP1091623A2 (fr) 2001-04-11
EP1091623A3 EP1091623A3 (fr) 2002-05-29
EP1091623B1 EP1091623B1 (fr) 2005-09-07

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EP00121536A Expired - Lifetime EP1091623B1 (fr) 1999-10-09 2000-09-30 Conducteur chauffant muni d'un élément de raccord et/ou d'un élément de fermeture ainsi que son procédé de fabrication

Country Status (6)

Country Link
US (1) US6423952B1 (fr)
EP (1) EP1091623B1 (fr)
JP (1) JP2001160478A (fr)
AT (1) ATE304277T1 (fr)
DE (2) DE19948819C2 (fr)
ES (1) ES2248000T3 (fr)

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EP1858116A1 (fr) * 2006-05-19 2007-11-21 Hispano Suiza Harnais électrique blindé, en particulier pour moteur d'avion
EP2781693A1 (fr) * 2013-03-21 2014-09-24 Tresse Métallique J. Forissier Elément conducteur pour la réalisation d'un système chauffant
WO2015003784A1 (fr) * 2013-07-10 2015-01-15 Voss Automotive Gmbh Câble chauffant pour conduite de fluide chauffable
CN114645988A (zh) * 2022-05-24 2022-06-21 成都科建生物医药有限公司 一种用于制备脂类药物的热交换机构

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US8586867B2 (en) 2010-10-08 2013-11-19 Shell Oil Company End termination for three-phase insulated conductors
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US8857051B2 (en) 2010-10-08 2014-10-14 Shell Oil Company System and method for coupling lead-in conductor to insulated conductor
WO2012138883A1 (fr) 2011-04-08 2012-10-11 Shell Oil Company Systèmes de jonction de conducteurs isolés
JO3141B1 (ar) 2011-10-07 2017-09-20 Shell Int Research الوصلات المتكاملة للموصلات المعزولة
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JO3139B1 (ar) 2011-10-07 2017-09-20 Shell Int Research تشكيل موصلات معزولة باستخدام خطوة اختزال أخيرة بعد المعالجة الحرارية.
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DE3428460A1 (de) * 1984-08-02 1986-02-13 Kabelwerk Wagner Kg, 5600 Wuppertal Verbindungsanordnung zweier doppeladriger elektrischer leitungen
EP0779334A1 (fr) * 1995-12-13 1997-06-18 Eilentropp Kg Mélanges polymériques et leur utilisation comme joints d'étanchéité et des éléments connecteurs résistants aux hautes températures
EP0893844A2 (fr) * 1997-06-23 1999-01-27 DaimlerChrysler Aerospace Airbus Gesellschaft mit beschränkter Haftung Systeme de connexion pour conducteur de chauffage

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1367859A3 (fr) * 2002-05-10 2007-10-17 Goodrich Corporation Chauffage pour caisses d'eau potable pour avion
EP1858116A1 (fr) * 2006-05-19 2007-11-21 Hispano Suiza Harnais électrique blindé, en particulier pour moteur d'avion
FR2901423A1 (fr) * 2006-05-19 2007-11-23 Hispano Suiza Sa Harnais electrique blinde,en particulier pour moteur d'avion
US7687714B2 (en) 2006-05-19 2010-03-30 Hispano Suiza Shielded and sealed electric harness
EP2781693A1 (fr) * 2013-03-21 2014-09-24 Tresse Métallique J. Forissier Elément conducteur pour la réalisation d'un système chauffant
FR3003720A1 (fr) * 2013-03-21 2014-09-26 Tresse Metallique J Forissier Element conducteur pour la realisation d'un systeme chauffant
WO2015003784A1 (fr) * 2013-07-10 2015-01-15 Voss Automotive Gmbh Câble chauffant pour conduite de fluide chauffable
CN114645988A (zh) * 2022-05-24 2022-06-21 成都科建生物医药有限公司 一种用于制备脂类药物的热交换机构
CN114645988B (zh) * 2022-05-24 2022-11-01 成都科建生物医药有限公司 一种用于制备脂类药物的热交换机构

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EP1091623B1 (fr) 2005-09-07
ATE304277T1 (de) 2005-09-15
US6423952B1 (en) 2002-07-23
ES2248000T3 (es) 2006-03-16
JP2001160478A (ja) 2001-06-12
DE19948819A1 (de) 2001-05-23
DE50011103D1 (de) 2005-10-13
EP1091623A3 (fr) 2002-05-29
DE19948819C2 (de) 2002-01-24

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