• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Pipe for building a thermally insulating conduit, obtained by butt welding at 131 prefabricated pipe sections or bars 11 to each other, each formed by two concentrical pipes 21, 31 connected at their ends by special cylindrical joints 41 substantially having the shape of a horizontal Y fork, the annular gap 101 being filled with thermally insulating material. Additionally the area (14, Fig. 1) external to the cylindrical joints at the butt weld can be filled with insulating material after the pipe sections are connected. The connection can readily be checked for faults and prevents any undesirable cavities being formed as might happen with conventional concentric pipe joints. <IMAGE>
    公开号:SU1384215A3
    申请号:SU843826159
    申请日:1984-12-13
    公开日:1988-03-23
    发明作者:Берти Альфредо；Бруччи Роберто；Раффаэли Эральдо；Гамбелли Луиджи
    申请人:Снампрогетти С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the construction of pipelines and can be used in the construction of subsea pipelines, mainly with thermal insulation.
    The purpose of the invention is to increase reliability by reducing the number of welded joints.
    A pipe for the construction of a thermally insulated pipeline consists of prefabricated and butt-welded pipe sections, each of which consists of two pipes arranged concentrically two, the diameter of which corresponds to the diameter of the pipeline being constructed and the diameter of the other pipe larger than the first. These pipes are connected at their ends by means of special cylindrical intermediate inserts, butt-welded to these two pipes, so that together with them they form a sealed annular space, which is filled with thermal insulation material. These special intermediate inserts are made in the form of V-shaped fittings, the outer ring of which, welded to a pipe of a larger diameter, has cylindrical and conical sections, and the inner one, welded to a pipe with a diameter equal to the diameter of the pipeline, has a cylindrical section.
    Between the two V-shaped mating fittings that are butt-welded to each other, a cavity is formed that faces the outer surface of the pipe and is therefore easily accessible, thereby providing an opportunity to provide high-quality and uniform thermal insulation of the pipeline by making cavity heat insulation material after welding fittings.
    The process of building a thermally insulated pipeline includes the steps of connecting prefabricated pipe sections to each other at ends located concentrically between two pipes by means of special cylindrical inserts having a longitudinal forming part of a V-shaped, butt welded to these pipes, the stage of filling the annular gap with thermal insulation which seal well
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    as well as the stages of transporting said pipe sections to the working platform and their successive joining by welding.
    Figure 1 shows the pipe, a longitudinal section; figure 2 - section aa in figure 1.
    The pipe contains pipe sections 1, which must be butt-welded to each other for the construction of a thermally insulated pipeline (only two mating sections are shown in FIG. 1).
    Each section 1 is formed of two concentrically arranged pipes 2 and 3, of which the inner pipe 2 has an outer diameter of the pipeline under construction. Said concentrically arranged pipes 2 and 3 are then connected to one another at their ends by means of two identical special cylindrical fittings 4, which are butt-joined to said pipes by means of welds 5 and 6.
    These special fittings 4 have their longitudinal forming in the form of a horizontally installed ring, in which the outer ring 7 is joined end to end with a butt weld joint 6 to the pipe of larger diameter 3, and with its other end through the intermediate ring in the form of an expanding cone 8 9, which in turn is butt-in joined by means of a weld 5 to the inner pipe 2.
    By this, a sealed cavity 10 is formed between the fittings 4 and the pipes 2 and 3, which is filled with a heat insulating material. This filling can be done by applying heat insulating material to the inner pipe 2 before inserting it into the outer pipe 3 and welding the special fittings 4, and by introducing special resins into the cavity 10 through the corresponding holes, which are then sealed.
    In order to form the pipeline, pipe sections or rods 1 made in this way are butt-wired in series with each other via a circular weld seam on the edges (Fig. 2) of cylindrical rings 9 of said special fittings A.
    The external cavities that are formed between the fittings 4 welded to one another are also filled with heat insulating material.
    权利要求:
    Claims (1)
    [1]
    The formula of the invention is, Pipeline for the construction of a heat-insulated pipeline mainly in marine conditions, formed from prefabricated pipe sections of two concentrically arranged pipes, the diameter of one of which corresponds to the diameter of the pipeline being constructed, and the diameter of the other pipe larger than
    first, and the ends of the pipes are connected by intermediate inserts, butt-welded to two pipes with the formation of a sealed annular space filled with insulating material, which is so that, in order to increase reliability by reducing the number of welds, each intermediate insert is made in the form of a fitting V-shaped, the outer ring of which is welded to a pipe of a larger diameter, has cylindrical and conical sections, and .internal, welded to a pipe with a diameter equal to the diameter of The pipeline has a cylindrical section.
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU1384215A3|1988-03-23|Pipe for constructing heat-insulated pipeline
    US5127116A|1992-07-07|Pipe joint
    US4883292A|1989-11-28|Corrosion resisting steel pipe and method of manufacturing same
    US7793992B2|2010-09-14|Junction part for coaxial pipe elements, and a method of joining together coaxial pipe elements
    FI87685B|1992-10-30|FOERFARANDE FOER SAMMANFOGNING AV ROER MED KORRUGERAD VAEGG AV PLASTMATERIAL
    US4640532A|1987-02-03|Joining means and method for joining metal members
    US5447339A|1995-09-05|Pipe for carrying fluids, particularly hydrocarbons
    US3873139A|1975-03-25|Pipe joint
    SU1560066A3|1990-04-23|Cylindrical coupling
    US3986735A|1976-10-19|Methods for welding two metal pieces of tubing with their ends to each other and to pipe-lines consisting of pieces of tubing thus welded to each other
    RU2080510C1|1997-05-27|Joint of enameled pipes
    US4518175A|1985-05-21|Tubular assembly including insulated conduits and couplers for the transfer of high temperature and high pressure fluids
    GB2099049A|1982-12-01|Insulating tubular well conduits
    SU777319A1|1980-11-07|Pipeline for transporting gases and liquids
    US4480371A|1984-11-06|Method of making insulated tubular conduit
    RU2232334C1|2004-07-10|Method for joining tubes provided with inner envelope
    RU2626709C1|2017-07-31|Method of connecting of pipes supplied with internal shell
    RU2236628C1|2004-09-20|Method of pipe joining
    RU2046245C1|1995-10-20|Pipe joint
    SU1696677A1|1991-12-07|Heat-insulated drill pipe string
    GB2152623A|1985-08-07|Thermally insulated fluid transport line
    SU1142200A1|1985-02-28|Method of manufacturing multilayer spiral-seam pipe
    RU2056572C1|1996-03-20|Method for joining pipelines
    RU2194207C2|2002-12-10|Connection of pipes provided with inner anticorrosive coats
    RU2046244C1|1995-10-20|Pipe joint
    同族专利:
    公开号 | 公开日
    NO166299C|1991-06-26|
    JPS6127394A|1986-02-06|
    IT1176382B|1987-08-18|
    DK193185A|1986-01-10|
    SE8502050D0|1985-04-26|
    IT8421809D0|1984-07-09|
    GB2161565A|1986-01-15|
    DK193185D0|1985-04-30|
    CA1256812A|1989-07-04|
    NO851693L|1986-01-10|
    IN163347B|1988-09-10|
    GB8510636D0|1985-06-05|
    EG16847A|1993-04-30|
    GB2161565B|1988-08-10|
    NO166299B|1991-03-18|
    OA08020A|1987-01-31|
    JPH0651697U|1994-07-15|
    SE465640B|1991-10-07|
    SE8502050L|1986-01-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NL152649B|1970-01-28|1977-03-15|Shell Int Research|PIPELINE OR PIPELINE SECTION FOR THE TRANSPORT OF A FLUIDUM IN CRYOGENIC TEMPERATURES, FOR EXAMPLE LIQUID NATURAL GAS.|
    IT1150849B|1982-04-20|1986-12-17|Snam Progetti|THERMALLY INSULATED PIPING FOR THE CONSTRUCTION OF UNDERWATER PIPES|JPH059579Y2|1987-07-31|1993-03-09|
    GB2229427B|1989-03-17|1993-04-14|Hardall International Limited|Refuse chute|
    US5390961A|1993-04-28|1995-02-21|Thermon Manufacturing Company|Dual wall thermally insulated conduit including skin effect heat tracing pipes|
    GB9912451D0|1999-05-27|1999-07-28|Saipem Spa|Insulated pipe structure and methods of making such structures|
    MXPA06010768A|2004-03-26|2006-12-15|Fluor Tech Corp|Cryogenic pipeline configurations and methods.|
    FR2873427B1|2004-07-23|2008-04-18|Saipem S A Sa|JOINT PART OF COAXIAL CONDUIT ELEMENTS AND METHOD OF ASSEMBLING COAXIAL CONDUITS|
    FR2878936A1|2004-12-08|2006-06-09|Saipem S A Sa|METHOD OF THERMALLY INSULATING COAXIAL PIPES BY PARTICULATE INSULATING MATERIAL|
    FR2879715B1|2004-12-17|2007-04-06|Saipem S A Sa|SUB-MARINE COAXIAL CONDUIT ELEMENT ALLEGE AND REINFORCED|
    FR2888327B1|2005-07-05|2008-07-04|Saipem S A Sa|METHOD AND DEVICE FOR CONTROLLING ULTRASOUND PROBE CONNECTION WELDING CONNECTION|
    WO2009083937A2|2007-12-27|2009-07-09|Acergy France Sa|Insulated pipelines and methods of construction and installation thereof|
    GB0803664D0|2008-02-28|2008-04-09|Acergy France Sa|Insulated pipelines and methods of construction and installation thereof|
    FR2937706B1|2008-10-29|2013-02-22|Saipem Sa|COAXIAL PIPE ASSEMBLY COMPRISING A THERMAL INSULATION SLEEVE|
    FR2948165A1|2009-07-17|2011-01-21|Saipem Sa|COAXIAL PIPE ASSEMBLY COMPRISING INTERNAL CAVITY JUNCTION PARTS AND METHOD OF MAKING SAME|
    DE202010008131U1|2010-07-21|2010-10-07|Funke Kunststoffe Gmbh|Reducer for pipe connection sleeve|
    CN103912734B|2014-04-18|2015-10-28|辽宁久大管业有限公司|A kind of direct-burried prefabricated thermal insulation high-temperature hot water pipe and production method thereof|
    GB2531323B|2014-10-16|2017-02-08|Majus Ltd|Pipe section|
    GB2535145B|2015-02-03|2017-10-18|Acergy France SAS|Termination bulkheads for subsea pipe-in-pipe systems|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT21809/84A|IT1176382B|1984-07-09|1984-07-09|PERFECTED PIPE FOR THE CONSTRUCTION OF THERMALLY INSULATED PIPES AND PROCEDURE FOR THAT CONSTRUCTION|
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