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DE2601990A1 - PROCESS FOR MANUFACTURING ELASTIC SHEATHINGS FOR NATURAL GAS AND / OR OIL PIPES - Google Patents

PROCESS FOR MANUFACTURING ELASTIC SHEATHINGS FOR NATURAL GAS AND / OR OIL PIPES

Info

Publication number
DE2601990A1
DE2601990A1 DE19762601990 DE2601990A DE2601990A1 DE 2601990 A1 DE2601990 A1 DE 2601990A1 DE 19762601990 DE19762601990 DE 19762601990 DE 2601990 A DE2601990 A DE 2601990A DE 2601990 A1 DE2601990 A1 DE 2601990A1
Authority
DE
Germany
Prior art keywords
natural gas
sheathings
oil pipes
iron powder
elastic
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.)
Withdrawn
Application number
DE19762601990
Other languages
German (de)
Inventor
Kurt Dr Ing Gruber
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to DE19762601990 priority Critical patent/DE2601990A1/en
Priority to IT3069876A priority patent/IT1067956B/en
Priority to FR7700072A priority patent/FR2338131A1/en
Priority to GB118977A priority patent/GB1573814A/en
Publication of DE2601990A1 publication Critical patent/DE2601990A1/en
Withdrawn legal-status Critical Current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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • 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
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/16—Laying or reclaiming pipes on or under water on the bottom
    • F16L1/163—Laying or reclaiming pipes on or under water on the bottom by varying the apparent weight of the pipe during the laying operation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Description

"Verfahren zur Herstellung von /...astischen Ummantelungen .für Erdgas- und/oder "Rrdöl leitungen""Process for the production of / ... elastic sheaths .for natural gas and / or "oil pipelines"

Die Erfindung betrifft ein Verfahren zur Herstellung von elastischen Ummantelungen für Erdgas- und/oder Erdölleitungen, die in der Meerstechnik Verwendung finden.The invention relates to a method for producing elastic jackets for natural gas and / or oil pipelines, which are used in sea technology.

Es ist bereits vorgeschlagen worden (P 25 44 194.5), derartige Ummantelungen bei der Herstellung mit einem Erzpulver, vorzugsweise Bleiglanz, zu vermischen» Hierbei soll die auf diese Weise erzeugte Mischung nach dem Aufbringen auf das Rohr, also nach der Ummantelung, einen Untertrieb im Meerwasser erzeugen, so daß ein insgesamt hergestellter Rohrstrang auf dem Meeresboden ohne zusätzliche Beschwerungen verlegt werden kann0 It has already been proposed (P 25 44 194.5) to mix such coatings with an ore powder, preferably galena, during production Generate seawater so that a pipe string produced as a whole can be laid on the seabed without additional weighting 0

Die vorliegende Erfindung ist dadurch gekennzeichnet, daß dem der Ummantelung dienenden elastischen Material bei der Erzeugung Eisenpulver zugegeben wird0 The present invention is characterized in that said shroud serving elastic material is added in the generation of iron powder 0

709849/0004709849/0004

■ι ;RU MÖNCHEN:■ ι; RU MÖNCHEN: TELEX:TELEX: TELEGRAMM:TELEGRAM: TELEFON:PHONE: SAMKKONTO:SAMK ACCOUNT: POSTSCHECKKONTO:CHECK ACCOUNT: 8 MÜNCHEN 228 MUNICH 22 1-856 441-856 44 INVENTIONINVENTION BERL.NBERL.N BERLINER BANK AG.BERLINER BANK AG. W. MEISSNER, BLN-WW. MEISSNER, BLN-W GT. ANNASTR. 11GT. ANNASTR. 11 INVEN dINVEN d BERLINBERLIN 030/385 60 37030/385 60 37 BERLIN 31BERLIN 31 1Π2 82-1091Π2 82-109 TCL.: 089/22 35 44TCL .: 089/22 35 44 •J30/GÖ6 23 82• J30 / GÖ6 23 82 36957160003695716000

Es ist bekannt, Eisenpulver nach dem sogenannten RZ-Verfahren herzustellen. Bei diesem Verfahren wird in einem KUPOL-Ofen Eisenschrott geschmolzen und durch die Berührung mit dem vorhandenen Koks kohlt das Ei«en auf. Nach dem Abziehen des flüssigen Eisens erfolgt eine Zerstäubung mittels Preßluft. Bei dieser Zerstäubung werden die Gießgeschwindigkeit,der Preßluftdruck und der Strahldurchmesser so aufeinander abgestimmt, daß zwischen dem Kohlenstoffgehalt und dem entsprechenden Oxid ein Gleichgewicht auftritt. Nach dem Erkalten liegt ein Rohpulver vor, das üblicherweise anschließend durch Glühen in reines Eisenpulver umgewandelt vird.It is known to produce iron powder by the so-called RZ process. This process takes place in a KUPOL furnace Scrap iron is melted and the egg is carbonized when it comes into contact with the coke that is present. After peeling off the liquid iron is atomized by means of compressed air. In this atomization, the casting speed, the Compressed air pressure and the jet diameter matched so that that an equilibrium occurs between the carbon content and the corresponding oxide. After cooling down lies a raw powder, which is then usually converted into pure iron powder by annealing.

Gemäß der vorliegenden Erfindung wird nun das als Zwischenprodukt aufzufassende Rohpulver für die Herstellung der der Beschwerung dienenden elastischen Ummantelungen verwendete Zweckmäßigerweise wird dabei das Eisenpulver in die beispielsweise Kautschukmischung eingebracht, bevor aus dieser dann ein Band oder ein Schlauch für die nachfolgende Ummantelung des Rohres hergestellt wird.According to the present invention, the raw powder to be regarded as an intermediate product for the production of the Expediently, the iron powder is used in the for example Rubber mixture introduced before a tape or hose for the subsequent sheathing from this of the pipe is made.

Es hat sich gezeigt, daß gegenüber dem eingangs erwähnten Vorschlag das nach dem RZ-Verfahren hergestellte Rohpulver wesentlich billiger ist, gleichzeitig aber den notwendigen Untertrieb des Rohrstranges nach dem Verschweißen und. Verlegen erzeugt, ohne daß die Elastizität und die Biegefestigkeit der Ummantelung beeinträchtigt wird.It has been shown that, compared to the proposal mentioned at the beginning, the raw powder produced by the RZ process is much cheaper, but at the same time the necessary underdrive of the pipe string after welding and. Embarrassed generated without affecting the elasticity and the flexural strength of the sheath.

Darüberhinaus ist aufgrund der Tatsache, daß die Eisenpulverkörnchen durch Oxidhäute umgeben sind, auch ein ausreichender Korrosionsschutz gegeben. Als Beispiel sei erwähnt, daß für eine Leitung von 500 mm 0 zur Erzeugung des erforderlichen Untertriebes 90 kg Eisenpulver pro Meter notwendig sind. In addition, due to the fact that the iron powder grains are surrounded by oxide skins, there is also adequate protection against corrosion. As an example it should be mentioned that 90 kg of iron powder per meter are necessary for a line of 500 mm 0 to generate the necessary underdrive.

- Patentansprüche -- 3 -- Claims - 3 -

709849/0004709849/0004

Claims (1)

Patentansprüche :Patent claims: {1 ο/ Verfahren zur Herstellung von elastischen Ummantelungen für Erdgas- und/oder Erdölleitungen, die in der Mep^ert Anwendung finden, dadurch gekennzeichnet, daß "bei der Erzeuguno· d<=>s zur Ummant*3") unp zu verwendenden elastischen Materials Eisenpulver zugegeben wird0 {1 ο / Process for the production of elastic jackets for natural gas and / or oil pipelines, which are used in the Mep ^ ert application, characterized by the fact that "in the production d <=> s zur Ummant * 3 ") unp to using elastic material iron powder is added 0 2ο Verfahren nach Anspruch 1, dadurch .gekennzeichnet, deß das elastische Material aus einer Kautschukmischung besteht»2ο Method according to claim 1, since by .ge identifies that the elastic material consists of a rubber mixture » ?o Eisenpulver zur Vervrendunp· gemäß dem Verfahren der Ansprüche 1 und 2, dadurch gekennzeichnet, daß es sich um ein nach dem RZ-Verfahren hergestelltos Rotnulver hfndo"1to ? o Iron powder for Vervrendunp · according to the process of claims 1 and 2, characterized in that it is a red powder produced according to the RZ process hfndo " 1 t o Dipl.-Ing. P. E. ?/. Jssner Batentanvvalt Dipl.-Ing. PE? /. Jssner Batentanvvalt 709849/0004709849/0004 ORIGINAL INSPECTEDORIGINAL INSPECTED
DE19762601990 1976-01-16 1976-01-16 PROCESS FOR MANUFACTURING ELASTIC SHEATHINGS FOR NATURAL GAS AND / OR OIL PIPES Withdrawn DE2601990A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE19762601990 DE2601990A1 (en) 1976-01-16 1976-01-16 PROCESS FOR MANUFACTURING ELASTIC SHEATHINGS FOR NATURAL GAS AND / OR OIL PIPES
IT3069876A IT1067956B (en) 1976-01-16 1976-12-21 PROCEDURE FOR THE PRODUCTION OF ELASTIC COATINGS FOR METHANE AND / OR OIL PIPELINES
FR7700072A FR2338131A1 (en) 1976-01-16 1977-01-04 METHOD OF MANUFACTURING ELASTIC COATINGS FOR NATURAL GAS OR PETROLEUM PIPES
GB118977A GB1573814A (en) 1976-01-16 1977-01-12 Sheathed pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762601990 DE2601990A1 (en) 1976-01-16 1976-01-16 PROCESS FOR MANUFACTURING ELASTIC SHEATHINGS FOR NATURAL GAS AND / OR OIL PIPES

Publications (1)

Publication Number Publication Date
DE2601990A1 true DE2601990A1 (en) 1977-12-08

Family

ID=5967829

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762601990 Withdrawn DE2601990A1 (en) 1976-01-16 1976-01-16 PROCESS FOR MANUFACTURING ELASTIC SHEATHINGS FOR NATURAL GAS AND / OR OIL PIPES

Country Status (4)

Country Link
DE (1) DE2601990A1 (en)
FR (1) FR2338131A1 (en)
GB (1) GB1573814A (en)
IT (1) IT1067956B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3272253D1 (en) * 1981-04-07 1986-09-04 Erik Brandtzaeg Meyer Weight coated subsea pipe line section
NO860408L (en) * 1986-02-06 1987-08-07 Norsk Hydro As INSULATION AND WEIGHTING FOR UNDERWATER PIPES AND PROCEDURES FOR PREPARING THE SAME.
FR2784734B1 (en) * 1998-10-14 2000-11-24 Novoplastic Sa ASSEMBLY FOR THE CONSTRUCTION OF A UNDERWATER TRANSPORT NETWORK OF FLUID, ENERGY, OR SIGNALS

Also Published As

Publication number Publication date
FR2338131A1 (en) 1977-08-12
FR2338131B3 (en) 1979-09-07
IT1067956B (en) 1985-03-21
GB1573814A (en) 1980-08-28

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee