DE1199070B - Electrically heated pipeline of large diameter with a heating cable laid inside the pipeline - Google Patents

Electrically heated pipeline of large diameter with a heating cable laid inside the pipeline

Info

Publication number
DE1199070B
DE1199070B DEK51877A DEK0051877A DE1199070B DE 1199070 B DE1199070 B DE 1199070B DE K51877 A DEK51877 A DE K51877A DE K0051877 A DEK0051877 A DE K0051877A DE 1199070 B DE1199070 B DE 1199070B
Authority
DE
Germany
Prior art keywords
pipeline
heating
large diameter
heating cable
electrically heated
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
DEK51877A
Other languages
German (de)
Inventor
Hans Barczewski
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.)
EUGEN KLOEPPER WAERMETECHNIK G
Original Assignee
EUGEN KLOEPPER WAERMETECHNIK G
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 EUGEN KLOEPPER WAERMETECHNIK G filed Critical EUGEN KLOEPPER WAERMETECHNIK G
Priority to DEK51877A priority Critical patent/DE1199070B/en
Publication of DE1199070B publication Critical patent/DE1199070B/en
Pending legal-status Critical Current

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
    • 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
    • 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
    • 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
    • F16L53/32—Heating of pipes or pipe systems using hot fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)
  • Pipeline Systems (AREA)

Description

Elektrisch beheizte Rohrleitung großen Durchmessers mit einem innerhalb der Rohrleitung verlegten Heizkabel Die elektrische Beheizung von Rohrleitungen mittels Heizkabeln, die innerhalb der Rohrleitungen verlegt werden und von hier aus das durch die Rohrleitung fließende Medium erwärmen, wird als bekannt vorausgesetzt.Large diameter electrically heated pipeline with an inside The heating cable laid in the pipeline The electrical heating of pipelines by means of heating cables that are laid inside the pipelines and from here from heating the medium flowing through the pipeline is assumed to be known.

Bei dieser Beheizungsart treten Schwierigkeiten auf, insbesondere beim Aufheizen eines sehr schwerflüssigen Mediums, wenn es sich um Rohrleitungen mit großem Durchmesser handelt. Wegen der großen Menge an aufzuheizendem Medium und wegen der geringen Konvektion dieses schwerflüssigen Mediums dauert es dann sehr lange, bis das gesamte, in der Leitung befindliche Medium sich in pumpfähigem Zustand befindet.Difficulties arise with this type of heating, in particular when heating up a very heavy-bodied medium in the case of pipelines acts with a large diameter. Because of the large amount of medium to be heated and because of the low convection of this heavy-flowing medium, it then takes a while very long until all of the medium in the line is pumpable State.

Da die Heizkabel nicht beliebig hoch belastet werden können und auch die Anheizzeit aus betrieblichen Gründen nicht beliebig lang ausgedehnt werden kann, kann es vorkommen, daß die von dem Heizkabel maximal aufnehmbare Wärmemenge für ein Aufheizen der Flüssigkeit, die in einer großen Rohrleitung pumpfähig erwärmt und durch diese gefördert werden soll, nicht ausreicht und im Extremfall mit einer tragbaren Heizleistung die Erwärmung und Warmhaltung großer Flüssigkeitsmengen praktisch nicht möglich ist.Because the heating cables cannot and also cannot be subjected to arbitrarily high loads the heating-up time cannot be extended indefinitely for operational reasons, it can happen that the maximum amount of heat that can be absorbed by the heating cable for a heating of the liquid, which heats up in a large pipeline so that it can be pumped and should be promoted by this, is not sufficient and in extreme cases with a portable heating capacity makes heating and keeping large quantities of liquid warm not possible.

Um schwerflüssige Medien auch in Rohrleitungen großen Durchmessers mittels innerhalb der Leitung verlegter Heizkabel erwärmen zu können, wird erfindungsgemäß vorgeschlagen, daß das Heizkabel in einer in der Hauptrohrleitung verlaufenden Hilfsrohrleitung kleineren Durchmessers verlegt ist, die ebenfalls zur Förderung des in der Hauptrohrleitung zu fördernden schwerflüssigen Mediums vorgesehen ist.For heavy fluids, even in large-diameter pipelines To be able to heat by means of heating cables laid within the line is according to the invention proposed that the heating cable in an auxiliary pipeline running in the main pipeline smaller diameter is laid, which is also used to promote in the main pipeline is intended to be conveyed heavily fluid medium.

Der Durchmesser der Hilfsrohrleitung ist dabei so bemessen, daß das in der Hilfsrohrleitung enthaltene Medium ohne Schwierigkeit in kurzer Zeit von dem Heizkab,el ausreichend erhitzt und damit pumpfähig gemacht werden kann. Mit Hilfe des in dieser Hilfsleitung strömenden warmen Mediums kann dann das Medium in der Hauptrohrleitung bis zur Pumpfähigkeit aufgeheizt werden, worauf dann auch diese Hauptrohrleitung in Betrieb genommen werden kann.The diameter of the auxiliary pipeline is dimensioned so that the Medium contained in the auxiliary pipeline without difficulty in a short time of the heating cable can be heated sufficiently and thus made pumpable. With The medium can then use the warm medium flowing in this auxiliary line are heated in the main pipeline to pumpability, whereupon also this main pipeline can be put into operation.

Claims (1)

Patentanspruch: Elektrisch beheizte Rohrleitung großen Durchmessers für bei Umgebungstemperatur schwerflüssige Medien mit einem innerhalb der Rohrleitung verlegten Heizkabel, d a d u r c h g e -k e n n z e i c h n e t, daß das Heizkabel (3) in einer in der Hauptrohrleitung (1) verlaufenden Hilfsrohrleitung (2) kleineren Durchmessers verlegt ist, die ebenfalls zur Förderung des in der Hauptrohrleitung zu fördernden schwerflüssigen Mediums vorgesehen ist. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 333 925, 859 549.Patent claim: An electrically heated pipe of large diameter for heavy liquid at ambient temperature for media with a threaded inside the pipeline heating cables, d a d u rch g e -kennzeichn et that the heating cable (3) smaller in a plane extending in the main duct (1) auxiliary pipe (2) Diameter is laid, which is also intended to promote the heavy liquid medium to be conveyed in the main pipeline. Considered publications: German Patent Specifications Nos. 333 925, 859 549.
DEK51877A 1964-01-18 1964-01-18 Electrically heated pipeline of large diameter with a heating cable laid inside the pipeline Pending DE1199070B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK51877A DE1199070B (en) 1964-01-18 1964-01-18 Electrically heated pipeline of large diameter with a heating cable laid inside the pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK51877A DE1199070B (en) 1964-01-18 1964-01-18 Electrically heated pipeline of large diameter with a heating cable laid inside the pipeline

Publications (1)

Publication Number Publication Date
DE1199070B true DE1199070B (en) 1965-08-19

Family

ID=7226146

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK51877A Pending DE1199070B (en) 1964-01-18 1964-01-18 Electrically heated pipeline of large diameter with a heating cable laid inside the pipeline

Country Status (1)

Country Link
DE (1) DE1199070B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4792661A (en) * 1985-03-16 1988-12-20 Durr Dental Gmbh & Co Kg Electric heating apparatus for regulating the temperature of a plurality of liquids
EP0473369A1 (en) * 1990-08-28 1992-03-04 Petroleo Brasileiro S.A. - Petrobras Process of and apparatus for electric pipeline heating

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE333925C (en) * 1921-03-07 Dampfkessel Und Gasometer Fabr Heating device for pipes
DE859549C (en) * 1943-07-16 1952-12-15 Koppers Gmbh Heinrich Heating device for pipes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE333925C (en) * 1921-03-07 Dampfkessel Und Gasometer Fabr Heating device for pipes
DE859549C (en) * 1943-07-16 1952-12-15 Koppers Gmbh Heinrich Heating device for pipes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4792661A (en) * 1985-03-16 1988-12-20 Durr Dental Gmbh & Co Kg Electric heating apparatus for regulating the temperature of a plurality of liquids
EP0473369A1 (en) * 1990-08-28 1992-03-04 Petroleo Brasileiro S.A. - Petrobras Process of and apparatus for electric pipeline heating

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