SE7907960L - Vermeisolerat ledningsror och sett for dess framstellning - Google Patents

Vermeisolerat ledningsror och sett for dess framstellning

Info

Publication number
SE7907960L
SE7907960L SE7907960A SE7907960A SE7907960L SE 7907960 L SE7907960 L SE 7907960L SE 7907960 A SE7907960 A SE 7907960A SE 7907960 A SE7907960 A SE 7907960A SE 7907960 L SE7907960 L SE 7907960L
Authority
SE
Sweden
Prior art keywords
ribbon
folded
coiled
spacer
manufacturing
Prior art date
Application number
SE7907960A
Other languages
English (en)
Other versions
SE440268B (sv
Inventor
H-U Voigt
H Matzat
Original Assignee
Kabel Metallwerke Ghh
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 Kabel Metallwerke Ghh filed Critical Kabel Metallwerke Ghh
Publication of SE7907960L publication Critical patent/SE7907960L/sv
Publication of SE440268B publication Critical patent/SE440268B/sv

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/14Arrangements for the insulation of pipes or pipe systems
    • F16L59/145Arrangements for the insulation of pipes or pipe systems providing fire-resistance
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/32Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
    • B29C44/322Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables
    • B29C44/324Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements the preformed parts being elongated inserts, e.g. cables the preformed parts being tubular or folded to a tubular shape
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/04Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/14Arrangements for the insulation of pipes or pipe systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/14Arrangements for the insulation of pipes or pipe systems
    • F16L59/143Pre-insulated pipes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00Pipes and tubular conduits
    • Y10S138/09Cellular
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/92Fire or heat protection feature
    • Y10S428/921Fire or flameproofing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/13Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1303Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/13Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1355Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
    • Y10T428/1359Three or more layers [continuous layer]
SE7907960A 1978-09-27 1979-09-26 Vermeisolerat ror och sett for dess framstellning SE440268B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782841934 DE2841934A1 (de) 1978-09-27 1978-09-27 Waermeisoliertes leitungsrohr und verfahren zu seiner herstellung

Publications (2)

Publication Number Publication Date
SE7907960L true SE7907960L (sv) 1980-03-28
SE440268B SE440268B (sv) 1985-07-22

Family

ID=6050527

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7907960A SE440268B (sv) 1978-09-27 1979-09-26 Vermeisolerat ror och sett for dess framstellning

Country Status (14)

Country Link
US (1) US4307756A (sv)
JP (1) JPS5547093A (sv)
AT (1) AT360809B (sv)
BE (1) BE878980A (sv)
CH (1) CH640040A5 (sv)
DE (1) DE2841934A1 (sv)
DK (1) DK151151C (sv)
ES (1) ES480322A1 (sv)
FR (1) FR2437564A1 (sv)
GB (1) GB2031103B (sv)
IT (1) IT1113294B (sv)
NL (1) NL7905043A (sv)
NO (1) NO159313C (sv)
SE (1) SE440268B (sv)

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3030120A1 (de) * 1980-08-08 1982-03-11 Thea Sebald GmbH & co KG, 8000 München Rohrfoermiges daemmelement fuer eine rohrisolierung
FI77102C (sv) * 1981-05-25 1989-01-10 Kabel Metallwerke Ghh Förfarande för framställning av ett värmeisolerat ledningsrör
DE3208724A1 (de) * 1982-03-11 1983-09-22 kabelmetal electro GmbH, 3000 Hannover Verfahren zur herstellung eines waermeisolierten leitungsrohres
US4509559A (en) * 1982-03-30 1985-04-09 Dunlop Limited Fire-barriers
JPS5939518A (ja) * 1982-08-30 1984-03-03 Toyo Soda Mfg Co Ltd 配管保温保冷材外装の施工方法
KR920004612B1 (ko) * 1982-11-13 1992-06-11 카벨-운트 메탈베르크 구트호프눙스휘트 악티엔게젤샤프트 열 절연도관의 제조방법
DE3242074A1 (de) * 1982-11-13 1984-05-17 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Verfahren zur herstellung eines waermeisolierten leitungsrohres
DE3305420A1 (de) * 1983-02-17 1984-08-23 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Verfahren zur herstellung eines waermeisolierten leitungsrohres
DE3307120A1 (de) * 1983-03-01 1984-09-06 Kabel- und Metallwerke Gutehoffnungshütte AG, 4500 Osnabrück Fernwaermeleitungsrohr
DE3307865A1 (de) * 1983-03-05 1984-09-06 kabelmetal electro GmbH, 3000 Hannover Waermeisoliertes leitungsrohr und verfahren zu seiner herstellung
US4467863A (en) * 1983-03-07 1984-08-28 Bisco Products, Inc. Flue gas duct assembly
US4556082A (en) * 1983-08-16 1985-12-03 Energy Systems, Inc. Removable thermal insulation jacket for valves and fittings
US5722462A (en) * 1984-04-25 1998-03-03 Dridi; Hamadi Flexible heat insulated fluid conduit
EP0185661B1 (en) * 1984-06-07 1988-07-13 The Dow Chemical Company Heat insulating structures for low-temperature or cryogenic pipings
US4590108A (en) * 1984-07-11 1986-05-20 Nippe Reynold B Method and system for insulating pipes
DE3535151A1 (de) * 1985-10-02 1987-04-09 Bernd Brandes Verfahren und einrichtung zur herstellung eines temperaturisolierten leitungsrohres
DE3546193C3 (de) * 1985-12-27 1997-10-16 Kaefer Isoliertechnik Verfahren zur Herstellung einer entkoppelten Wärmedämmung an Behältern, Rohrleitungen oder Armaturen
US4890864A (en) * 1986-09-02 1990-01-02 C-System Incorporated Insulated duct end system
US4735235A (en) * 1986-09-02 1988-04-05 C-System Incorporated Insulated duct end system
DK579386A (da) * 1986-12-02 1988-06-03 Topo Cap Unit A S Fremgangsmaade til fremstilling af en formfast, varmeisolerendeog diffusionstaet skaal
US4772507A (en) * 1987-07-20 1988-09-20 Leo Jr Joseph P Pipe hanger insulation support
US4966202A (en) * 1988-11-14 1990-10-30 Dayco Products, Inc. Shape retention hose construction
US5004018A (en) * 1989-07-31 1991-04-02 Manville Corporation Insulated exhaust pipe and manufacture thereof
JP2804811B2 (ja) * 1990-01-24 1998-09-30 三菱電機株式会社 望遠鏡の構造体
FR2670862B1 (fr) * 1990-12-21 1993-06-11 Coflexip Conduite flexible a protection thermique amelioree.
US5183299A (en) * 1991-10-24 1993-02-02 Robert Hallerstrom Insulated pipe with end protection
US5402615A (en) * 1992-11-13 1995-04-04 International Copper Association, Ltd. Fire retardant barrier system and method
CA2179384A1 (en) * 1994-09-13 1996-03-28 Lou Karl Composite conduit for carrying fuel oil
BR9510435A (pt) * 1994-12-29 1998-07-07 Bentley Harris Inc Produto de luva adequado para uso como uma barreira para resistir á transferência de calor entre uma fonte de calor externa e um substrato alongado e processo para sua produção
US8678042B2 (en) 1995-09-28 2014-03-25 Fiberspar Corporation Composite spoolable tube
US5944060A (en) * 1995-12-26 1999-08-31 Boeing North American, Inc. Composite duct system
US5725028A (en) * 1996-05-13 1998-03-10 Cleland; James M. Trunk line
US5732742A (en) * 1996-07-01 1998-03-31 Trigen Energy Corporation Method for re-insulating intalled steam pipe insitu
DE19750564A1 (de) * 1997-11-14 1999-05-20 Missel Gmbh & Co E Dämmaterial
KR20010089719A (ko) * 1998-12-28 2001-10-08 지스트라텐 알베르터스 빌헬머스 요안느 예비-단열된 파이프 및 그의 제조 방법
AT409293B (de) * 1999-04-27 2002-07-25 Ke Kelit Kunststoffwerk Gmbh Isolierung für ein leitungsrohr oder ein rohrformstück
US20080217464A1 (en) * 1999-08-26 2008-09-11 Ridgeway Lawrence M Packaging devices and methods of producing same
US20050145749A1 (en) * 2003-09-03 2005-07-07 Ridgeway Lawrence M.Jr. Packaging spool and process for producing same
US6632496B1 (en) 1999-12-03 2003-10-14 Sumitomo Electric Interconnect Products, Inc. Thermal insulation system for protecting fluid lines and method for making same
CA2445586C (en) * 2001-04-27 2012-01-10 Fiberspar Corporation Improved composite tubing
US7152633B2 (en) * 2003-09-17 2006-12-26 Thermo-Tec Heat shield
US7523765B2 (en) 2004-02-27 2009-04-28 Fiberspar Corporation Fiber reinforced spoolable pipe
DE102004046656A1 (de) * 2004-09-25 2006-04-06 Preh Gmbh Thermisch isoliertes, flexibles Leitungsrohr und Verfahren zur und Vorrichtung für die Herstellung eines Leitungsrohrs
US8757150B2 (en) * 2004-12-17 2014-06-24 Ric Investments, Llc Condensation reduction and management systems in a gas flow delivery system
US7302972B1 (en) 2005-08-05 2007-12-04 Stowe Alan D Thermo-insulated flexible tubing
DE102005053101A1 (de) * 2005-11-04 2007-05-10 Basf Ag Gedämmte Rohre
ATE523920T1 (de) * 2006-01-20 2011-09-15 Alcatel Lucent Hochfrequenz-wellenleiter mit elektrischem leiter aus einer mit einer leitfähigen schicht beschichteten plastikfolie
US20080128043A1 (en) * 2006-01-20 2008-06-05 Lou Watkins Insulated subsea pipe with flexible insulation
US8839822B2 (en) 2006-03-22 2014-09-23 National Oilwell Varco, L.P. Dual containment systems, methods and kits
US8746289B2 (en) * 2007-02-15 2014-06-10 Fiberspar Corporation Weighted spoolable pipe
DE102007015660A1 (de) * 2007-03-31 2008-10-02 Brugg Rohr Ag, Holding Flexibles wärmeisoliertes Leitungsrohr
EA015608B1 (ru) * 2007-04-02 2011-10-31 Басф Се Изолированные трубы
CA2641492C (en) 2007-10-23 2016-07-05 Fiberspar Corporation Heated pipe and methods of transporting viscous fluid
AT506575B1 (de) 2008-09-09 2009-10-15 Mikl Josef Brandschutzeinrichtung
US8176943B2 (en) * 2008-11-21 2012-05-15 Parker-Hannifin Corporation High temperature fire sleeve
ITTO20090039A1 (it) * 2009-01-21 2010-07-22 Cima S R L Conduttura termoisolata e metodo di marcatura delle condutture termoisolate di un impianto di riscaldamento/raffreddamento per edifici
CA2690926C (en) 2009-01-23 2018-03-06 Fiberspar Corporation Downhole fluid separation
WO2011011268A1 (en) 2009-07-24 2011-01-27 Parker-Hannifin Corporation Fire resistant hose assembly
WO2011075538A1 (en) 2009-12-15 2011-06-23 Fiberspar Corporation System and methods for removing fluids from a subterranean well
US8955599B2 (en) 2009-12-15 2015-02-17 Fiberspar Corporation System and methods for removing fluids from a subterranean well
AT509229B1 (de) * 2010-02-26 2011-07-15 Isoplus Fernwaermetechnik Ges M B H Verfahren zur herstellung eines verbundrohres
CA2881682C (en) 2012-08-10 2021-07-06 National Oilwell Varco, L.P. Composite coiled tubing connectors
US9790836B2 (en) 2012-11-20 2017-10-17 Tenneco Automotive Operating Company, Inc. Loose-fill insulation exhaust gas treatment device and methods of manufacturing
EP3446021B1 (en) * 2016-04-18 2021-10-20 Rockwool International A/S A method to produce an insulating pipe section for pipeworks and a pipe section
SG11202109853TA (en) 2019-03-15 2021-10-28 Swagelok Co Insulated hose arrangements
US11156322B2 (en) * 2019-10-29 2021-10-26 Aeroflex Usa, Inc. Pipe insulation jacket with reinforcement member
CN111336326A (zh) * 2020-03-09 2020-06-26 天津市中通管道保温有限公司 一种中空夹层阻燃型保温管

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US497535A (en) * 1893-05-16 Process of manufacturing electric-conduit sections
DK41572C (da) * 1926-04-17 1930-02-03 Indehavere Af En Elek Sk Forre Magnetkerne.
DE1525658C3 (de) * 1966-06-01 1981-10-15 Goepfert, Lotte, 2000 Hamburg Wärmeisoliertes Leitungsrohr
US3434502A (en) * 1967-05-22 1969-03-25 Charles D Snelling Flexible fire resistant air duct
US3529632A (en) * 1968-11-21 1970-09-22 Moore & Co Samuel Composite tubing
US3778408A (en) * 1968-12-09 1973-12-11 Ici America Inc Flame-retardant,polyurethane coating compositions
US3552445A (en) * 1969-04-18 1971-01-05 Seefore Corp Insulated pipe assembly
ES422481A1 (es) * 1973-01-22 1976-09-16 Hitachi Chemical Co Ltd Un procedimiento para preparar una espuma de poliolefina retardadora de la llama.
GB1435469A (en) * 1973-05-18 1976-05-12 Ici America Inc Urethane-modified polyisocyanurate foams
US3821067A (en) * 1973-07-05 1974-06-28 Atlantic Richfield Co Fire retardant polyurethane compositions
US3891579A (en) * 1974-02-25 1975-06-24 Basf Wyandotte Corp Process for the preparation of isocyanurate foams employing halogenated aliphatic alkanol accelerators
DE2450540C2 (de) * 1974-10-24 1982-10-14 Bayer Ag, 5090 Leverkusen Hydroxylgruppenhaltige Kompositionen und ihre Verwendung zur Herstellung von flammwidrigen Kunststoffen
DE2546798A1 (de) * 1975-10-18 1977-04-21 Volkswagenwerk Ag Anordnung zur umsetzung von schwenkbewegungen eines schwenkhebels in drehbewegungen einer welle
US4067833A (en) * 1976-03-08 1978-01-10 Texaco Development Corporation Urethane-modified polyisocyanurate foams from oxyalkylated aniline and aromatic polyisocyanates
DE2613741A1 (de) * 1976-03-31 1977-10-13 Kabel Metallwerke Ghh Verfahren zur kontinuierlichen herstellung waerme- und schallisolierter leitungsrohre
US4213487A (en) * 1978-01-26 1980-07-22 The Celotex Corporation Laminate of metal with thermoplastic material

Also Published As

Publication number Publication date
JPS5547093A (en) 1980-04-02
SE440268B (sv) 1985-07-22
NO159313B (no) 1988-09-05
DK151151B (da) 1987-11-09
ES480322A1 (es) 1979-11-16
IT1113294B (it) 1986-01-20
GB2031103B (en) 1982-11-03
NO159313C (no) 1988-12-14
DK547678A (da) 1980-03-28
IT7947820A0 (it) 1979-01-30
DK151151C (da) 1988-05-16
FR2437564B1 (sv) 1984-03-23
DE2841934A1 (de) 1980-04-17
ATA897678A (de) 1980-06-15
AT360809B (de) 1981-02-10
CH640040A5 (de) 1983-12-15
FR2437564A1 (fr) 1980-04-25
GB2031103A (en) 1980-04-16
US4307756A (en) 1981-12-29
NL7905043A (nl) 1980-03-31
NO793086L (no) 1980-03-28
BE878980A (fr) 1980-03-25

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