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WO2006097765A1 - Ligne de fluide chauffée - Google Patents

Ligne de fluide chauffée Download PDF

Info

Publication number
WO2006097765A1
WO2006097765A1 PCT/GB2006/001015 GB2006001015W WO2006097765A1 WO 2006097765 A1 WO2006097765 A1 WO 2006097765A1 GB 2006001015 W GB2006001015 W GB 2006001015W WO 2006097765 A1 WO2006097765 A1 WO 2006097765A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid line
heated fluid
line according
inner layer
layer
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
Application number
PCT/GB2006/001015
Other languages
English (en)
Inventor
Gerhard Thome
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.)
Heat Trace Ltd
Original Assignee
Heat Trace Ltd
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 Heat Trace Ltd filed Critical Heat Trace Ltd
Publication of WO2006097765A1 publication Critical patent/WO2006097765A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H05B3/58—Heating hoses; Heating collars
    • 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
    • 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
    • F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
    • F16L53/30—Heating of pipes or pipe systems
    • F16L53/35—Ohmic-resistance heating
    • F16L53/38—Ohmic-resistance heating using elongate electric heating elements, e.g. wires or ribbons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits

Definitions

  • the invention concerns an electric heatable fluid line with heating by an electro conductive polymer which has positive temperature characteristics of electric resistance.
  • PTC positive temperature coefficient
  • heating wire can be used without further thermal fuse.
  • heating bands are known where a resistance wire is wound around the two connecting wires, thereby connecting the wires at regular intervals.
  • an insulating sheathing preferably of a thermoplastic fluoric polymer as FEP, is extruded.
  • the insulating sheathing is furthermore covered by a wire netting as mechanical protection and as ground wire of the heating band.
  • a further insulating coating is extruded, preferably of a thermoplastic fluoric polymer.
  • This so composed heating band is laid parallel to the fluid line or wound around the fluid line and secured to the fluid line in such a way that it conducts the heat well.
  • the band is secured to the fluid line by taping with insulating adhesive tape, preferably with a glass fibre fabric tape.
  • a heated fluid line characterized by at least one inner layer, forming a tube through which a fluid may flow, a middle layer of electro conductive polymer with a positive temperature characteristic of electrical resistance and electric wires embedded therein, and an outer layer of an insulating material.
  • the inner layer of the heated fluid line may be a flexible tube of plastic, preferably thermoplastic, through which the fluid flows. Also possible would be an elastomer. Because of the contact with the fluid the tube needs to be resistant against the fluid. When using the heated fluid line in vehicles or aircrafts a resistance against fuel, oil, coolant etc. is required.
  • a preferred application is the use of the present invention for the heating of tubes for urea solutions. Such a use requires the tube to be resistant to urea and ammonia and their solutions like "Ad Blue”. This applies to many thermoplastics, i.e. IXEF, PA, PTFE, PEEK, PPS and PVDF, but also elastomers, i.e. BR, NR and EPDM, which would be suitable for the inner layer.
  • a preferred material for the inner layer is polyamide, and particularly preferred is an aliphatic polyamide, most particularly PA 12, of which the number of carbon atoms between the nitrogen atoms in the polymer chain counts 12 links.
  • Favourably the inner layer is extruded as a tube.
  • a PTC polymeric layer, in which electrical wires are embedded, is provided on this inner layer. It will be appreciated that there may be some layers between the inner layer and the PTC polymeric layer, which could be provided as a diffusion barrier.
  • the electric wires can have the shape of a one-core or multi-core wire, but could also be formed like a band.
  • the PTC polymeric layer is also extruded, and the electric wires are carried along and included in the extruding process.
  • At least one outer layer is sprayed onto the PTC polymeric layer which serves as thermal and electrical insulation. If the outer layer consists of several layers, the thermal and electrical insulation can be taken over by different layers. At least the layer serving for the thermal insulation consists preferably of a temperature resistant, foamed plastic, e.g. Polyethylene or Silicone, which favourably combines good thermal insulation with high flexibility and little weight, and additionally is extrusionable.
  • a temperature resistant, foamed plastic e.g. Polyethylene or Silicone
  • a heated fluid line is created, which is very flexible, compact and space-saving.
  • the heated fluid line is also reliable and durable. Good heat transfer between the PTC polymeric layer is ensured as there is a large contact area between the inner tube and the PTC layer, since there is tight contact between the PTC polymeric layer and the inner tube.
  • Thin tubes can be heated reliably according to the present invention. Since the electric wires are carried along the fluid line, a parallel connection of the PTC resistance over the whole length of the wires is provided. If there are air pockets in the fluid to be heated, the PTC polymer regulates the current at this spot. Due to the missing heat transfer to the fluid at the location of the air pocket, the temperature of the PTC polymeric layer in the region of the air pocket will rise. As the temperature of the region of the PTC polymeric layer rises, so does its electrical resistance, causing a reduction in the current flow through the region of the PTC polymeric layer, i.e. the PTC polymeric layer is self-regulating. Therefore, the air pockets are accounted for without overheating the medium locally and/or affecting the rest of the heating of the fluid.
  • the fluid line can be cut to any length and provided with connections, since the electric wires are carried along the whole line.
  • these onesided connections are preferred to a two-sided connection, which are needed for heating wires, as they are easier to complete.
  • the inner layer 1 is a plastic layer formed as a tube, through which a fluid can flow.
  • the fluid is a urea solution like "Ad Blue”.
  • the inner diameter of the tube is 2 mm, the outer diameter 4 mm.
  • the material of the inner layer is ammonia-resistant PA 12.
  • the inner layer 1 is coated by a PTC polymeric layer 2, which has the electric wires 3,4 embedded therein.
  • the PTC polymeric layer 2 consists of a thermoplastic polymer which is provided with electro-conductive particles and thus the layer is electro-conductive.
  • the PTC polymeric layer 2 is extruded on the inner layer 1.
  • the PTC polymeric layer 2 forms a tube around the inner layer 1 (in other words the PTC polymeric layer extends fully around the circumference of the inner layer).
  • the PTC polymeric layer 2 is coated by an insulation layer 5 which is the outer sheathing and serves both as thermal and electrical insulation.
  • the outer diameter of the insulation layer in this example is 10 mm.
  • the outer layer 5 is extruded on the PTC polymeric layer 2.
  • the dimensions and materials of the heated fluid given in the above- described embodiment are given by way of example only.
  • the layers forming the heated fluid line may be of any suitable thickness, and any suitable material.
  • the heated fluid line may be any suitable length.
  • one or more of the electric wires 3, 4 may be provided with a covering comprising material having a negative temperature coefficient (NTC).
  • NTC negative temperature coefficient
  • the NTC covering may serve as a cold start limiter .which acts to limit the power dissipated by the heating cable when it is at low temperatures.
  • the material for the cold start limiter may be chosen such that the resistance of the negative temperature coefficient material increases substantially when it is below a predetermined minimum temperature.
  • the minimum temperature may correspond to the lowest normal operating temperature of the heated fluid line. This limits the current flowing through the cold start limiter when the temperature is at or below the minimum temperature. This is desirable, since without the cold start limiter the resistance of the PTC polymeric layer 2 will be very low at very low temperatures. This could result in dangerously high current being supplied to the PTC polymeric layer 2 when the heated fluid line is in a low temperature environment (for example when the heater is switched on).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Heating (AREA)

Abstract

Ligne de fluide chauffée, caractérisée par au moins une couche interne formant un tube à travers lequel un fluide peut circuler, une couche moyenne de polymère électroconducteur avec une caractéristique de température positive de résistance électrique et des fils électriques intégrés dans celle-ci, et une couche externe d’un matériau isolant.
PCT/GB2006/001015 2005-03-18 2006-03-20 Ligne de fluide chauffée Ceased WO2006097765A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200520004602 DE202005004602U1 (de) 2005-03-18 2005-03-18 Beheizte Flüssigkeitsleitung
DE202005004602.7 2005-03-18

Publications (1)

Publication Number Publication Date
WO2006097765A1 true WO2006097765A1 (fr) 2006-09-21

Family

ID=34802215

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2006/001015 Ceased WO2006097765A1 (fr) 2005-03-18 2006-03-20 Ligne de fluide chauffée

Country Status (2)

Country Link
DE (1) DE202005004602U1 (fr)
WO (1) WO2006097765A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2476698A (en) * 2009-12-30 2011-07-06 Aflex Hose Ltd Anti-static liner tube
CN102348920A (zh) * 2009-02-13 2012-02-08 盖茨公司 加热的流体导管、系统及方法
EP2518383A1 (fr) 2011-04-29 2012-10-31 Evonik Degussa GmbH Conduite pouvant être tempérée pour applications offshore
EP2520839A2 (fr) 2011-05-06 2012-11-07 Evonik Degussa GmbH Conduite pouvant être tempérée pour applications offshore
US8307637B2 (en) * 2005-09-16 2012-11-13 Dayco Fluid Technologies S.P.A. Device for purifying exhaust gases of a vehicle by selective catalytic reduction including a heated piping
WO2013137745A1 (fr) * 2012-03-14 2013-09-19 Purapipe As Canalisation multicouche en un matériau polymère, dispositif pour la fabrication de la canalisation multicouche et procédé pour la fabrication de la canalisation multicouche
DE102012208020A1 (de) 2012-05-14 2013-11-14 Evonik Industries Ag Verfahren zur Herstellung eines beheizbaren Rohrs
CN103398262A (zh) * 2013-07-24 2013-11-20 苏州市润凯汽车配件制造有限公司 一种管道加热器
JP2014500448A (ja) * 2010-11-18 2014-01-09 フォス・アウトモーティヴ・ゲー・エム・ベー・ハー 電気的に加熱可能な既製の媒体ラインとその媒体ラインの製造方法
JP2014503766A (ja) * 2010-12-08 2014-02-13 フォス・アウトモーティヴ・ゲー・エム・ベー・ハー 流体加熱導管、流体加熱導管の使用、及び流体加熱導管の製造方法
CN103608170A (zh) * 2011-04-19 2014-02-26 福士汽车配套部件责任有限公司 多层电加热介质管线
CN105072721A (zh) * 2015-08-06 2015-11-18 浙江大铭新材料股份有限公司 一种新型ptc发热塑胶管及其制备方法
EP3069866A1 (fr) 2015-03-20 2016-09-21 Evonik Degussa GmbH Tuyau chauffant
WO2017114334A1 (fr) * 2015-12-29 2017-07-06 淄博环能海臣环保技术服务有限公司 Auto-régulation thermique de film de matériau polymère électriquement conducteur à coefficient de température positif composite et tuyau en matière plastique thermiquement isolé
US10183126B1 (en) 2017-07-27 2019-01-22 Scott Norman Heated patient tube assembly

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US7626146B2 (en) 2005-08-09 2009-12-01 Watlow Electric Manufacturing Company Modular heater systems
US7919733B2 (en) * 2005-08-09 2011-04-05 Watlow Electric Manufacturing Company Modular heater systems
US7964826B2 (en) 2005-08-09 2011-06-21 Watlow Electric Manufacturing Company Modular heater systems
US8809751B2 (en) 2005-08-09 2014-08-19 Watlow Electric Manufacturing Company Modular heater system
EP1931905B1 (fr) * 2005-09-16 2012-08-08 DYTECH - Dynamic Fluid Technologies S.p.A. Systeme de tuyau multicouche pour l'acheminement et le chauffage de fluide
DE602007009676D1 (de) 2006-06-08 2010-11-18 System zur lagerung von motorabgasadditiven
DE102006051413B4 (de) 2006-10-27 2009-01-02 Norma Germany Gmbh Elektrisch beheizbare Fluidleitung
EP2137449B2 (fr) 2007-04-26 2018-10-17 Voss Automotive GmbH Raccord pour conduites d'acheminement de substances
PL1985908T5 (pl) * 2007-04-26 2018-12-31 Voss Automotive Gmbh Złączka przewodowa do przewodów dla mediów
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DE202007015036U1 (de) 2007-10-26 2009-03-12 Voss Automotive Gmbh Leitungsverbinder sowie Leitungssatz für fluidische Medien
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PL2222995T3 (pl) 2007-12-21 2015-04-30 Voss Automotive Gmbh Element połączeniowy przewodów dla przewodów dla mediów oraz zespolony przewód dla mediów z co najmniej jednym takim elementem połączeniowym przewodów
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DE102008018658A1 (de) 2008-04-11 2009-10-15 A. Kayser Automotive Systems Gmbh Beheizbares Leitungselement für ein Fluid
DE202008014092U1 (de) * 2008-10-23 2010-03-11 Rehau Ag + Co Rohr
DE102008055891A1 (de) 2008-11-05 2010-05-12 Masterflex Ag Flexibler, elektrisch beheizbarer Schlauch
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CN101799116B (zh) * 2010-03-16 2013-04-17 河北亚大汽车塑料制品有限公司 用于输送液体的防冻管路
DE102010019777B4 (de) 2010-05-07 2019-08-22 Airbus Operations Gmbh Luftfahrzeug mit einem Fluidleitungssystem
DE102010034066A1 (de) * 2010-08-12 2012-02-16 Diehl Aerospace Gmbh Versorgungsleitung
DE102011014201B3 (de) * 2011-03-16 2012-08-09 Rehau Ag + Co. Knöcherschiene für zahnmedizinische Zwecke
DE102011053906A1 (de) * 2011-09-23 2013-03-28 Visteon Global Technologies, Inc. Luftentfeuchtungseinheit und -verfahren
DE102012025014A1 (de) * 2012-12-20 2014-06-26 Voss Automotive Gmbh Beheizbare Medienleitung sowie Verfahren zum Herstellen einer solchen
DE102014018372B4 (de) 2013-12-13 2025-06-12 Voss Automotive Gmbh Konfektionierte beheizbare Medienleitung sowie Verfahren zu deren Herstellung
EP3123069A1 (fr) * 2014-03-24 2017-02-01 DSM IP Assets B.V. Appareil de dosage d'une solution d'urée pour un catalyseur de réduction catalytique sélective (rcs)
DE102014010647A1 (de) * 2014-07-17 2016-01-21 Daimler Ag Medienleitung und Anordnung zur Erwärmung eines Mediums
DE102014115445A1 (de) * 2014-10-23 2016-04-28 Rehau Ag + Co Verwendung einer Medienleitung
EP3086011B1 (fr) 2015-04-21 2019-07-31 Airbus Operations GmbH Tuyau à double paroi avec capacité de chauffage intégrée pour un aéronef ou un engin spatial
CN108474509B (zh) 2015-12-16 2021-09-21 沃特洛电气制造公司 改进的模块化加热器系统
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Cited By (36)

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Publication number Priority date Publication date Assignee Title
US8307637B2 (en) * 2005-09-16 2012-11-13 Dayco Fluid Technologies S.P.A. Device for purifying exhaust gases of a vehicle by selective catalytic reduction including a heated piping
CN102348920A (zh) * 2009-02-13 2012-02-08 盖茨公司 加热的流体导管、系统及方法
CN102348920B (zh) * 2009-02-13 2015-04-29 盖茨公司 加热的流体导管、系统及方法
GB2476698B (en) * 2009-12-30 2012-10-31 Aflex Hose Ltd Anti-static liner tube
GB2476698A (en) * 2009-12-30 2011-07-06 Aflex Hose Ltd Anti-static liner tube
JP2014500448A (ja) * 2010-11-18 2014-01-09 フォス・アウトモーティヴ・ゲー・エム・ベー・ハー 電気的に加熱可能な既製の媒体ラインとその媒体ラインの製造方法
US9644776B2 (en) 2010-11-18 2017-05-09 Voss Automotive Gmbh Prefabricated electrically heatable media line and method for producing a media line of this kind
US9360147B2 (en) 2010-12-08 2016-06-07 Voss Automotive Gmbh Heatable fluid line, use thereof and method for producing same
JP2014503766A (ja) * 2010-12-08 2014-02-13 フォス・アウトモーティヴ・ゲー・エム・ベー・ハー 流体加熱導管、流体加熱導管の使用、及び流体加熱導管の製造方法
CN103608170A (zh) * 2011-04-19 2014-02-26 福士汽车配套部件责任有限公司 多层电加热介质管线
CN103608170B (zh) * 2011-04-19 2016-10-19 福士汽车配套部件责任有限公司 多层电加热介质管线
EP2518383A1 (fr) 2011-04-29 2012-10-31 Evonik Degussa GmbH Conduite pouvant être tempérée pour applications offshore
DE102011017811A1 (de) 2011-04-29 2012-10-31 Evonik Degussa Gmbh Temperierbare Rohrleitung für Offshoreanwendungen
US9151418B2 (en) 2011-04-29 2015-10-06 Evonik Degussa Gmbh Temperature-controllable pipe
US9133965B2 (en) 2011-05-06 2015-09-15 Evonik Degussa Gmbh Temperature-controllable pipe suitable for offshore applications
JP2012233581A (ja) * 2011-05-06 2012-11-29 Evonik Degussa Gmbh 海洋に適用するための温度調節可能な導管
DE102011075383A1 (de) 2011-05-06 2012-11-08 Evonik Degussa Gmbh Temperierbare Rohrleitung für Offshoreanwendungen
EP2520839A2 (fr) 2011-05-06 2012-11-07 Evonik Degussa GmbH Conduite pouvant être tempérée pour applications offshore
EA028688B1 (ru) * 2012-03-14 2017-12-29 Пьюрэпайп Холдинг Лтд. Многослойный полимерный трубопровод, устройство и способ изготовления такого многослойного трубопровода
WO2013137745A1 (fr) * 2012-03-14 2013-09-19 Purapipe As Canalisation multicouche en un matériau polymère, dispositif pour la fabrication de la canalisation multicouche et procédé pour la fabrication de la canalisation multicouche
JP2014005936A (ja) * 2012-05-14 2014-01-16 Evonik Industries Ag 加熱可能な管を製造するための方法
EP2664835A1 (fr) 2012-05-14 2013-11-20 Evonik Industries AG Procédé de fabrication d'un tube pouvant être chauffé, tube pouvant être chauffé et son utilisation
DE102012208020A1 (de) 2012-05-14 2013-11-14 Evonik Industries Ag Verfahren zur Herstellung eines beheizbaren Rohrs
KR101979031B1 (ko) 2012-05-14 2019-05-15 에보니크 데구사 게엠베하 가열 가능한 파이프를 제조하기 위한 방법
CN103448250A (zh) * 2012-05-14 2013-12-18 赢创工业集团股份有限公司 一种生产可加热管材的方法
US10094505B2 (en) 2012-05-14 2018-10-09 Evonik Degussa Gmbh Heatable line pipe and a method for producing the heatable pipe
KR20130127382A (ko) * 2012-05-14 2013-11-22 에보닉 인두스트리에스 아게 가열 가능한 파이프를 제조하기 위한 방법
CN103398262B (zh) * 2013-07-24 2015-09-09 苏州市润凯汽车配件制造有限公司 一种管道加热器
CN103398262A (zh) * 2013-07-24 2013-11-20 苏州市润凯汽车配件制造有限公司 一种管道加热器
EP3069866A1 (fr) 2015-03-20 2016-09-21 Evonik Degussa GmbH Tuyau chauffant
US10139022B2 (en) 2015-03-20 2018-11-27 Evonik Degussa Gmbh Heatable pipe
CN105072721A (zh) * 2015-08-06 2015-11-18 浙江大铭新材料股份有限公司 一种新型ptc发热塑胶管及其制备方法
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US10183126B1 (en) 2017-07-27 2019-01-22 Scott Norman Heated patient tube assembly
WO2019023047A1 (fr) * 2017-07-27 2019-01-31 Scott Norman Ensemble de tube patient chauffé
CN111194231A (zh) * 2017-07-27 2020-05-22 新生儿产品集团公司 加热的患者管组件

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