WO2002067630A1 - Cable chauffant a structure multicouche - Google Patents

Cable chauffant a structure multicouche Download PDF

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Publication number
WO2002067630A1
WO2002067630A1 PCT/EP2001/011956 EP0111956W WO02067630A1 WO 2002067630 A1 WO2002067630 A1 WO 2002067630A1 EP 0111956 W EP0111956 W EP 0111956W WO 02067630 A1 WO02067630 A1 WO 02067630A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating cable
layer
cable according
spacer
heating
Prior art date
Application number
PCT/EP2001/011956
Other languages
German (de)
English (en)
Inventor
Renato Parun
Original Assignee
Thermon Europe B.V.
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7674370&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2002067630(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thermon Europe B.V. filed Critical Thermon Europe B.V.
Priority to EA200300148A priority Critical patent/EA004666B1/ru
Priority to EP01273768A priority patent/EP1297722B1/fr
Priority to AT01273768T priority patent/ATE303709T1/de
Priority to DE50107297T priority patent/DE50107297D1/de
Publication of WO2002067630A1 publication Critical patent/WO2002067630A1/fr

Links

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

Definitions

  • the present invention relates to a heating cable with a multilayer structure.
  • the object of the present invention is to improve a heating cable in such a way that it is particularly resistant to external mechanical loads (kinks).
  • a heating cable with a multi-layer structure which has at least one central, electrically conductive heating conductor and two electrically insulating and essentially air-impermeable layers, which are arranged in such a way that an air cushion can form between them.
  • a spacer can be provided to avoid direct contact between the two substantially air-impermeable layers.
  • the spacer can be a layer with a fibrous, braided, cell-like or porous structure.
  • the spacer can be designed in the sense of a mechanical reinforcement function.
  • the spacer can be a reinforcement layer made of a metallic wire mesh, which can consist of nickel-plated copper wires.
  • At least one of the substantially air impermeable layers can be made of perfluoroalkoxy copolymer (PFA).
  • PFA perfluoroalkoxy copolymer
  • a layer of a non-metallic fiber material can be provided between at least one of the essentially air-impermeable layers and the spacer.
  • the layer of a non-metallic fiber material can consist of a glass fiber ceramic tape.
  • a heating cable according to the invention is designated 6.
  • Such a heating cable can be used, for example, as a series heating cable for keeping the process temperature constant. Due to the structure explained in more detail below, it can also be used in potentially explosive areas.
  • Such a heating cable 6 with series resistance has a constant active power defined by the voltage, the resistance and the length of the cable. For example, a process temperature of up to 280 ° C can be maintained. A typical supply voltage is 750 V. This means that output powers in the range of 25 W / min can be achieved.
  • the structure of the heating cable 6 according to the invention is to be explained from the inside to the outside.
  • An electrical heating conductor 1 is provided centrally in the heating cable 6. This is surrounded by a first insulation layer 2, for example made of PFA or a comparable plastic material.
  • a glass fiber ceramic tape layer 3 which is shown in FIG Interaction with a reinforcing layer 4 arranged radially from it outside (as shown) or inside (not shown) provides protection against mechanical damage.
  • the glass fiber ceramic tape layer 3 is formed similar to a glass silk mixed with minerals.
  • the sandwich structure of the glass fiber ceramic band layer 3 / reinforcement layer 4 further increases the mechanical protective properties.
  • the glass fiber ceramic tape layer 3 also prevents the reinforcement layer 4 from cutting into the PFA layer 2 located thereunder when the PFA layer 2 is thermally expanded. It should also be borne in mind that the PFA material softens at higher temperatures.
  • the glass fiber ceramic tape layer 3 thus has a mechanical protective and electrical insulating function at the same time.
  • a further glass fiber ceramic band layer can be provided outside the reinforcement layer 4 in addition to the glass ceramic band layer 3 already shown.
  • the reinforcement layer 4 is again protected from the outside by a further electrically insulating layer 5, which can also consist, for example, of perfluoroalkoxy copolymer material (PFA).
  • PFA perfluoroalkoxy copolymer material
  • the two electrically insulating layers 2, 5 are both essentially and ideally completely completely impermeable to air, so that a mechanically protective air cushion is formed between them if the cross sections are dimensioned accordingly.
  • the glass ceramic tape layer 3 and the reinforcement layer 4 are essentially permeable to air and therefore have the function of a spacer which prevents direct contact between the two layers 2, 5 as far as possible. Therefore, the reinforcement layer 4 is also designed in such a way that it completely surrounds the layers underneath - for example in contrast to earthing straps with a comparable structure - both with regard to the longitudinal extent and the circumferential direction of the heating cable. The complete surrounding in all dimensions guarantees that the spacer effect and thus also the protective air cushion are always present.
  • This air cushioning is achieved on the one hand by the braided structure of the reinforcement layer 4 and on the other hand by a corresponding dimensioning of the inside diameter of the reinforcement layer 4 with respect to the outside diameter of the glass fiber ceramic band layer 3.
  • the diameter of the reinforcement layer 4 can, for example, be deliberately overdimensioned in order to ensure a sufficient strength of the air cushion which is thereby created.
  • the reinforcement layer 4 has some play with respect to the layers below it, but can be surrounded by the layer 5 in a tight manner on the outside.
  • the braided structure of the reinforcement layer 4 also ensures that a certain volume of air can form between the glass fiber ceramic band layer 3 and the outer protective layer 5.
  • reinforcement layer based on wire mesh
  • spacers can also be used which have, for example, a porous, fibrous, braided or cell-like (open or closed) structure.
  • the mechanical protective effect is achieved on the one hand by the air cushion and on the other hand by the sandwich structure.
  • the advantage in terms of a synergetic effect is that both protective measures can be provided independently of one another, but complement each other in that they develop a protective effect with regard to different mechanical influences from the outside.
  • the heating cable according to the invention When used as a heating cable, the heating cable according to the invention has the advantages that it is highly flexible and chemically resistant, enables constant heating power (active power), large heating circuit lengths are possible and the supply voltage can be up to 750 V.

Abstract

Les câbles chauffants électriques (6) s'utilisent en tant que chauffages ohmiques en série par exemple pour maintenir une température de processus constante. Un tel câble chauffant (6) présente une structure multicouche comportant, de l'intérieur vers l'extérieur, un conducteur chauffant (1), une première couche isolante (2) en PFA, une couche (3) constituée d'une bande de céramique renforcée par des fibres de verre, une couche de renforcement (4) en treillis métallique ainsi qu'une autre couche isolante en PFA (5). La combinaison de la bande de céramique (3) et de la couche de renforcement (4) permet de protéger notamment le conducteur chauffant sensible (1) de manière efficace contre les influences mécaniques extérieures.
PCT/EP2001/011956 2001-02-16 2001-10-16 Cable chauffant a structure multicouche WO2002067630A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EA200300148A EA004666B1 (ru) 2001-02-16 2001-10-16 Нагревательный кабель с многослойным строением
EP01273768A EP1297722B1 (fr) 2001-02-16 2001-10-16 Cable chauffant a structure multicouche
AT01273768T ATE303709T1 (de) 2001-02-16 2001-10-16 Heizkabel mit mehrschichtaufbau
DE50107297T DE50107297D1 (de) 2001-02-16 2001-10-16 Heizkabel mit mehrschichtaufbau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10107429.8 2001-02-16
DE10107429A DE10107429B4 (de) 2001-02-16 2001-02-16 Heizkabel mit Mehrschichtaufbau

Publications (1)

Publication Number Publication Date
WO2002067630A1 true WO2002067630A1 (fr) 2002-08-29

Family

ID=7674370

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/011956 WO2002067630A1 (fr) 2001-02-16 2001-10-16 Cable chauffant a structure multicouche

Country Status (5)

Country Link
EP (1) EP1297722B1 (fr)
AT (1) ATE303709T1 (fr)
DE (2) DE10107429B4 (fr)
EA (1) EA004666B1 (fr)
WO (1) WO2002067630A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008016069U1 (de) * 2008-12-04 2009-12-03 Trace Tec Begleitheizungstechnik Gmbh Vorrichtung zur Beheizung von Oberflächen
US20140224521A1 (en) * 2013-02-12 2014-08-14 Nexans Electrical cable resistant to partial discharges
CN108521689A (zh) * 2018-05-16 2018-09-11 无锡市环球电器装备有限公司 智能型超长距离加热电缆

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10325517A1 (de) 2003-06-05 2004-12-23 Hew-Kabel/Cdt Gmbh & Co. Kg Elektrische Heizleitung oder Heizband
ITNA20130038A1 (it) * 2013-07-05 2015-01-06 Gianni Lucci Apparecchio per il contenimento e il riscaldamento di acque ad uso domestico con funzionamento a pressione grazie all'energia elettrica prodotta da bobine elettromagnetiche
KR101516159B1 (ko) * 2014-05-29 2015-05-04 이민수 세라믹과 테프론이 코팅된 히팅케이블
CN110462754B (zh) 2017-02-01 2022-06-14 恩文特服务有限责任公司 低烟无卤自动调节发热电缆

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1540897A1 (de) * 1965-10-25 1970-01-02 Eugen Kloepper Waermetechnik G Heizkabel mit Schutzleiter
US4308448A (en) * 1979-01-16 1981-12-29 Beck Heinz V D Heating cable with a specific heating capacity
DE3414284A1 (de) * 1984-04-14 1985-10-31 Heraeus-Wittmann Gmbh, 6450 Hanau Elektrisches heizelement fuer rohrleitungen, insbesondere fuer lange rohrleitungen
EP0802701A2 (fr) * 1996-04-19 1997-10-22 Glenwood Franklin Heizer Câble chauffant à limiteur de puissance variable
DE20006222U1 (de) * 2000-04-06 2000-07-27 Hemstedt Dieter Elektrische Heizleitung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2850722A1 (de) * 1978-11-23 1980-05-29 Pampus Kg Elektrisches heizelement mit schutzleiter fuer aggressive baeder
DE3243061A1 (de) * 1982-11-22 1984-05-24 HEW-Kabel Heinz Eilentropp KG, 5272 Wipperfürth Flexibles elektrisches ablaengbares heizelement
DE8435742U1 (de) * 1984-12-06 1985-04-04 Schmidt, Hans, 5165 Hürtgenwald Elektrische heizleitung
US5111032A (en) * 1989-03-13 1992-05-05 Raychem Corporation Method of making an electrical device comprising a conductive polymer
GB9618289D0 (en) * 1996-09-02 1996-10-16 Warmup Plc Heating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1540897A1 (de) * 1965-10-25 1970-01-02 Eugen Kloepper Waermetechnik G Heizkabel mit Schutzleiter
US4308448A (en) * 1979-01-16 1981-12-29 Beck Heinz V D Heating cable with a specific heating capacity
DE3414284A1 (de) * 1984-04-14 1985-10-31 Heraeus-Wittmann Gmbh, 6450 Hanau Elektrisches heizelement fuer rohrleitungen, insbesondere fuer lange rohrleitungen
EP0802701A2 (fr) * 1996-04-19 1997-10-22 Glenwood Franklin Heizer Câble chauffant à limiteur de puissance variable
DE20006222U1 (de) * 2000-04-06 2000-07-27 Hemstedt Dieter Elektrische Heizleitung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008016069U1 (de) * 2008-12-04 2009-12-03 Trace Tec Begleitheizungstechnik Gmbh Vorrichtung zur Beheizung von Oberflächen
US20140224521A1 (en) * 2013-02-12 2014-08-14 Nexans Electrical cable resistant to partial discharges
US9362019B2 (en) * 2013-02-12 2016-06-07 Nexans Electrical cable resistant to partial discharges
CN108521689A (zh) * 2018-05-16 2018-09-11 无锡市环球电器装备有限公司 智能型超长距离加热电缆

Also Published As

Publication number Publication date
ATE303709T1 (de) 2005-09-15
EP1297722A1 (fr) 2003-04-02
EA004666B1 (ru) 2004-06-24
EA200300148A1 (ru) 2003-06-26
DE10107429B4 (de) 2005-09-29
EP1297722B1 (fr) 2005-08-31
DE50107297D1 (de) 2005-10-06
DE10107429A1 (de) 2002-09-12

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