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WO2010080041A1 - Système de pince - Google Patents

Système de pince Download PDF

Info

Publication number
WO2010080041A1
WO2010080041A1 PCT/NO2010/000009 NO2010000009W WO2010080041A1 WO 2010080041 A1 WO2010080041 A1 WO 2010080041A1 NO 2010000009 W NO2010000009 W NO 2010000009W WO 2010080041 A1 WO2010080041 A1 WO 2010080041A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular element
clamp assembly
elements
clamping
support
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/NO2010/000009
Other languages
English (en)
Inventor
Kenneth Langerud
Vigmund BJØRSVIK
Tove Bekkeheien
Petter Erga
Monica STRØMGÅRD
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.)
TDW Offshore Services AS
Original Assignee
TDW Offshore Services AS
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 TDW Offshore Services AS filed Critical TDW Offshore Services AS
Publication of WO2010080041A1 publication Critical patent/WO2010080041A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
    • F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
    • F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut

Definitions

  • This invention relates to a clamp assembly for external reinforcement and/or repair of a tubular element, such as a pipe.
  • Pipelines are subjected to internal and external corrosion, excessive ground forces and other factors in their surrounding environment which can result in holes, cracks and other structural damage through which leakage of contents can occur.
  • Repair clamps are commonly provided for assembly around the outside circumference of a damaged pipe. Typically, when applied, the clamp forms a fully circumferential envelope enclosing the damaged area of pipe.
  • This envelope may be formed either from a rigid body comprising perimeter sealing elements, or a flexible, typically metal body such as in stainless steel, mild steel, or a malleable iron.
  • a commonly known repair clamp For high-pressure applications, e.g. on pipes for transport of hydrocarbons (petroleum, natural gas, etc.) a commonly known repair clamp comprises two clamp halves of a cast metal, clamped together by bolts and having sealing elements at both ends. As these clamps are exposed to a corrosive environment, materials having a corresponding corrosion-resistant properties are required. Due to the high pressures these clamps must be able to withstand, the clamp halves must be of a material having a sufficient strength and rigidity. Therefore, clamps of this type are heavy and require substantial manpower and/or other support structures during assembly and disassembly.
  • the present invention aims to provide a repair clamp which will substantially overcome the aforementioned problems and allow more convenient fitting of a repair clamp whilst not compromising on structural or sealing integrity. Summary of the invention
  • One purpose of the invention is to provide a clamp assembly which is more versatile and easier to use than the known pipe clamps.
  • the invented clamp assembly allows fabrication using standard elements, thereby making it versatile and adaptive to several clamp configurations. It is a modular construction, having individually replaceable elements, and the various elements may provide different materials properties.
  • the invention comprises a clamp assembly for external reinforcement and/or repair of a tubular element, comprising first and second modular clamping elements configured for connection around the tubular element and, when in use, together enveloping an outer circumferential surface of a portion of the tubular element; said clamping elements being releasably interconnected by securing and tightening means, characterised by each clamping element further comprising a respective plurality of support elements connected to respective housing sections, each said housing section configured for connection around a circumferential segment of the tubular element and, when in use, together enveloping an outer circumferential surface of a portion of the tubular element.
  • the support elements within each clamping element are juxtaposed to each other in a tubular element longitudinal direction. Spacers may be arranged between juxtaposed support elements.
  • the support elements within each clamping element are interconnected by support element connectors, preferably extending through the support elements in a tubular element longitudinal direction.
  • the securing and tightening means comprise a plurality of tensioning bolts extending between the clamping elements and being releasably secured to the clamping elements by means of connection elements, preferably configured as longitudinal elements having openings for the tensioning bolts and being arranged in a tubular element longitudinal direction.
  • the support elements within each clamping element are juxtaposed to each other with an interval in a tubular element longitudinal direction which is greater than the width of the securing and tightening means extending between the clamping elements.
  • the securing and tightening means are preferably arranged between juxtaposed support elements and preferably extend in a direction substantially transverse to the tubular element longitudinal direction.
  • the plurality of support elements may be connected to their respective housing sections by means of fasteners.
  • each support element has a plate shape and a recessed portion of a shape which matches an outside shape of the housing section to which it is connected.
  • each support element is connected to the respective housing section in an orientation which is substantially perpendicular to the tubular element longitudinal direction.
  • the support elements material may comprise ordinary steel or alloyed steel.
  • the housing sections may comprise an oxidation and corrosion resistant material which retains its strength over a wide temperature range material, such as Inconel .
  • the support element connectors extend through the spacers.
  • the invention also comprises an arrangement of clamps for external reinforcement and/or repair of a tubular element, where a plurality of clamp assemblies according to the invention are connected in an end-to-end relationship along a length of the tubular element, preferably by connecting respective abutting ends of housing sections.
  • Figure 1 is a perspective view of an embodiment of the clamp assembly according to the invention, in an assembled state
  • Figure 2 is a perspective view of the clamp assembly illustrated by figure 1, in an assembled state on a pipe;
  • Figure3 is a perspective view of the clamp assembly illustrated by figures 1 and 2, partly assembled into two clamp sections, e.g. in a configuration prior to installation on a pipe;
  • Figure 4 is a partly exploded perspective view of the clamp assembly illustrated by figures 1 to 3.
  • the illustrated embodiment of the clamp according to the invention comprises first and second clamp sections 1 , 2, which essentially are similar. As shown in the other figures, the clamp sections I 5 2 are releasably connected to each other by a plurality of tensioning bolts 6 extending through holes 16, 26 in clamping bars 14, 24 connected to respective clamp sections.
  • the clamp sections are positioned opposite each other in the desired location on the pipe, seals 42a,b are fitted within and in the region of both ends of the clamp liner sections 10, 20, as is illustrated in figure 3.
  • longitudinal seals 49 are provided in suitable grooves in each of the liner sections, as shown in figure 3. The region within the between the packers within the liner sections is thus sealed off when the clamp sections are assembled onto a pipe.
  • the first clamp section 1 comprises a first semi-circular liner section 10 which is configured for assembly onto the pipe and fitted with first packer sections 42a and first end covers 44a at both ends.
  • the second clamp section 2 comprises a second semi-circular liner section 20 which is configured for assembly onto the pipe and fitted with second packer sections 42b and second end covers 44b at both ends.
  • ridges 46 may be provided as support elements for the packers 42a,b.
  • Each clamp section I 5 2 furthermore comprise a plurality of support cradles 12, 22 connected to respective liner sections 10, 20.
  • first support cradles 12 in the first clamp section 1 are connected to the first liner section 10, for example by means of screws 7 through holes 8 in the liner section 10 and into threaded holes 9 in each of the first cradles 12.
  • second support cradles 22 in the second clamp section 2 are connected to the second liner section 20 in a similar manner.
  • the cradles 12, 22 are connected to the respective liner section 10, 20 in a juxtaposed configuration, transversely to the pipe longitudinal axis and at an interval determined by spacers 5.
  • the cradles 12, 22 are interconnected by means of connection bolts 4, extending through suitable holes 25 in the cradles, and also through the spacers 5.
  • the cradles 12, 22 are preferably plate elements and have a shape facing the respective liner sections 10, 20 which is complementary to an outside shape of the liner section 10, 20. In this way, when the tensioning bolts 6 are tightened against the clamping bars 14, 24, the compression loads are transferred to the liner sections in a uniform and controlled manner.
  • the support cradles 12, 22 are arranged substantially perpendicular to the respective liner section 10, 20, i.e. substantially perpendicular to a longitudinal axis A (see figure 2), generally coincident with a pipe longitudinal axis.
  • the tensioning bolts 6 are arranged generally transverse of the longitudinal axis A, while the connection bolts 4 extend generally parallel with the longitudinal axis A.
  • the support cradles 12, 22 within each clamp section 1, 2 are juxtaposed to each other with an interval in a direction along the axis A which is greater than the width of the tensioning bolts 6 extending between the clamp sections.
  • the tensioning bolts 6 each have a length which at least exceeding the outside diameter of the pipe.
  • the lengths of the tensioning bolts exceed the distance constituted by two opposing support cradles 12, 22.
  • the tensioning bolts extend through the elongate clamping bars 14, 24 on the outside of each clamp section, and each clamping bar spans all the support cradles 12, 22 on the respective connection element.
  • first and second liner sections 10, 20 need to be of an oxidation and corrosion resistant material which retains its strength over a wide temperature range material.
  • the support cradles 12, 22 need no such stringent material specifications, as they are not exposed to the harsh environment as are the liner sections (For example if the clamp assembly is used on a pipe containing H 2 S). Therefore, while the liner sections may be made of an oxidation and corrosion resistant material (e.g. Inconel ® ), the support cradles may be made of virtually any material readily available (e.g. ordinary steel or alloyed steel), as long as that material fulfils the requirements for compressive strength and rigidity.
  • clamp assembly according to the invention, in-field modifications may easily be made. Also multiple clamp assemblies may be joined in an end-to-end relationship along an extended length of the tubular element.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Sleeves (AREA)
  • Clamps And Clips (AREA)

Abstract

L’invention concerne un système de pince pour un élément tubulaire, comprenant de multiples éléments de serrage modulaires (1, 2) conçus pour se connecter autour de l’élément tubulaire et enveloppant, lors de l’utilisation, la surface circonférentielle externe d’une partie de l’élément tubulaire. Les éléments de serrage (1, 2) sont interconnectés de manière amovible par des boulons de serrage (6). Chaque élément de serrage (1, 2) comprend une pluralité respective d’éléments de support (12, 22) connectés à des sections de boîtier respectives (10, 20), chaque section de boîtier (10, 20) étant configurée pour se connecter autour d’un segment circonférentiel de l’élément tubulaire et pour entourer ensemble, lors de l’utilisation, la surface circonférentielle d’une partie de l’élément tubulaire. Les éléments de support (12, 22) dans chaque élément de serrage (1, 2) sont juxtaposés les uns aux autres dans l sens longitudinal de l’élément tubulaire.
PCT/NO2010/000009 2009-01-08 2010-01-08 Système de pince Ceased WO2010080041A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20090105 2009-01-08
NO20090105A NO20090105L (no) 2009-01-08 2009-01-08 Klammer

Publications (1)

Publication Number Publication Date
WO2010080041A1 true WO2010080041A1 (fr) 2010-07-15

Family

ID=41822443

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2010/000009 Ceased WO2010080041A1 (fr) 2009-01-08 2010-01-08 Système de pince

Country Status (2)

Country Link
NO (1) NO20090105L (fr)
WO (1) WO2010080041A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489911A1 (fr) * 2011-02-17 2012-08-22 STATS (UK) Limited Scellement de tuyaux
EP3156707A1 (fr) * 2015-10-14 2017-04-19 Technip France Dispositif de serrage configuré pour être fixé autour d'une ligne, ensemble et procédé associés

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1537581A (fr) * 1967-09-25 1968-08-23 Assemblage mécanique pour tuyaux lisses résistant au déboîtement
US20070296213A1 (en) * 2006-06-21 2007-12-27 Jones James W Self-tightening clamp assemblies for protection against full pipe separation
GB2453567A (en) * 2007-10-11 2009-04-15 Trelleborg Crp Ltd Clamp having pre-stressed spring elements between outer clamp shell and inner clamp member

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1537581A (fr) * 1967-09-25 1968-08-23 Assemblage mécanique pour tuyaux lisses résistant au déboîtement
US20070296213A1 (en) * 2006-06-21 2007-12-27 Jones James W Self-tightening clamp assemblies for protection against full pipe separation
GB2453567A (en) * 2007-10-11 2009-04-15 Trelleborg Crp Ltd Clamp having pre-stressed spring elements between outer clamp shell and inner clamp member

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489911A1 (fr) * 2011-02-17 2012-08-22 STATS (UK) Limited Scellement de tuyaux
GB2488236B (en) * 2011-02-17 2016-04-27 Stats (Uk) Ltd Pipe sealing
US9476522B2 (en) 2011-02-17 2016-10-25 Stats (Uk) Limited Pipe sealing
RU2613361C2 (ru) * 2011-02-17 2017-03-16 СТАТС (ЮКей) ЛИМИТЕД Устройство и способ для уплотнения трубы и способ изготовления указанного устройства
EP3156707A1 (fr) * 2015-10-14 2017-04-19 Technip France Dispositif de serrage configuré pour être fixé autour d'une ligne, ensemble et procédé associés
WO2017064262A1 (fr) * 2015-10-14 2017-04-20 Technip France Dispositif de serrage configuré pour être fixé autour d'une conduite, ensemble et procédé associés

Also Published As

Publication number Publication date
NO20090105L (no) 2010-07-09

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