US3739971A - Piping tensioning device - Google Patents

Piping tensioning device Download PDF

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Publication number
US3739971A
US3739971A US00132514A US3739971DA US3739971A US 3739971 A US3739971 A US 3739971A US 00132514 A US00132514 A US 00132514A US 3739971D A US3739971D A US 3739971DA US 3739971 A US3739971 A US 3739971A
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US
United States
Prior art keywords
pipe
tensioning device
track
tracks
piping
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Expired - Lifetime
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US00132514A
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English (en)
Inventor
A Silvestri
G Gargatagli
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Saipem SpA
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Saipem SpA
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Publication date
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    • 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
    • F16L1/20—Accessories therefor, e.g. floats, weights
    • F16L1/23—Pipe tensioning apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B65H51/10—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips
    • B65H51/105—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips one of which is an endless belt
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
    • H03B5/366—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current

Definitions

  • the piping column under tension shall be launched in the sea or recovered on the work pontoon according to whether the stretch developed by the movers of the pontoon self be respectively higher or lower than that exerted by the above-mentioned tensioning device.
  • the tensioning device consists substantially of two opposed series of tensioning rollers employed to tighten between them the pipe of the piping column with such a force to warrant the necessary friction. All the rollers of each series are pivoted on a unique horizontal rigid bar in such a way that it is sufficient to move vertically said bar to cause all the rollers to fit themselves simultaneously to the different sizes of the pipes to be tightened.
  • the piping column to be launched is very often provided with a cement sheath and this entails therefore the two-fold requirement to be compelled to realize by means of the abovementioned opposed series of tensioning rollers a noticeable tightening force with an elevated friction coefficient by keeping however moderate the specific pressure on the pipe in order that the concrete be not cracked.
  • the object of the present invention is the elimination of the above-mentioned drawbacks and the realization of a tensioning device which allows the laying in the sea of pipings also at noticeable depths and without previous adjustments of the piping column.
  • This is practically achieved by adopting as tightening element of the pipe of the piping column, two long opposed tracks whose catenaries, rather than on a rigid horizontal bar, run, according to a feature of the invention, each on several sliding blocks hinged and adjustable which allow to approximate with a broken line, the curvature of the pipe.
  • the tensioning device allows to effect the laying in the sea also at noticeable depths and, moreover, because of the considerable length of the tracks, the practical and eco' nomic drawback of being obliged previously to adopt the piping column by shutting its interspaces free of cement sheathing is avoided.
  • FIG. ll illustrates a schematic front section of the tensioning device according to the invention
  • FIG. 2 illustrates a schematic longitudinal section
  • FIG. 3 shows frontly the saddle coated of blocks utilized in the present invention
  • FIG. 4 is a side view, in a higher scale, of the above-mentioned saddle with little blocks fixed to the track link.
  • numeral reference 1 indicates the base of the tensioning device which is rigidly fixed on the work pontoon and which supports, in correspondence of its four vertexes, four couples of columns, 2 turned and perfectly vertical, which are in turn connected on the upper part to a head 3.
  • An upper caisson 4 and a lower caisson 5 present each two side sections 6 in suitable cylindrical hollows in which the abovementioned turned columns 2 are inserted in order that said caissons are positively guided by said columns in their vertical movements.
  • caissons 4 and 5 support at their ends some toothed cylinders for the operation of two long, opposed tracks, respectively 8 and 9, which, brought in touch respectively with the upper generatrix and the lower generatrix of the pipe to be launched provided with the sheath of cement 11, have the function to tighten between them the said pipe of the piping column to lay in the sea with such a friction force to stretch all the column with a constant and prefixed stretch.
  • Both upper track 8 and lower track 9 run in correspondence of the tightening zone of pipe 10 (i.e. in the lower part for track 8 and in the upper part for track 9), on sliding rollers 12 supported by sliding blocks 13 (three in the drawings) hinged between them to the ends and in turn bolted in correspondence of the hinges respectively to the caissons 4 and 5 by means of adjustable threaded pivots 14.
  • adjustable threaded pivots 14 In such a way, by lengthening or by shortening suitably the above-mentioned adjustable pivots, it is possible to move angularly between them the above-mentioned sliding blocks in order that one can approximate with a broken line the curvature of the pipe to be tightened 10 of the piping column which must be laid in the sea at noticeable depths.
  • each link 17, 17, 17" and so on is fixed by means of bolts or coupling pins 18, a saddle 16 which, if necessary, is equipped with two anchorage fins 19 strengthened by angle bars 20.
  • Each saddle 16 consists of several welded plates, box-shaped and shaped in such a way to present frontly a concave surface 21 having the same diameter of the sheathed pipe 10 to be tightened. On said surface and extending for all its length is then welded a dovetail guide 22 wherein are fitted so many little blocks of neoprene or of similar material 15 as it requires to coat entirely the abovementioned concave surface 21.
  • These aligned coating little blocks 15 form in such a way a gummy curved surface 23 having high friction coefficient, which represents the contact surface with sheathed pipe 10.
  • curved saddles 16 are suitable to tighten only a type of pipe, and i.e. only that pipe which has the same diameter of the concave surfaces 21, made in the same ones, it results that, in order to launch pipes having different diameters, it will be necessary to arrange so many series of curved saddles as are the possible different diameters of the piping to be launched. At this purpose it must point out that whereas the coating gummy little blocks have a high cost, the curved saddles of welded plate are easy to realize and have a very low cost.
  • the relative upper caisson 4 is fixed in such a position by means of pins (not drawn in the figures) in such a way to unload the coupling screw-nut of any stress.
  • pins not drawn in the figures
  • both at the side sections 6 of caisson 4, and along the guide columns 2, holes wherein the above-mentioned clamping pins may be inserted are foreseen.
  • Lower caisson 5 and the relative lower track 9 are, on the contrary, moved vertically to tighten the pipe to be launched with a fixed friction force by four side oleodynamic pistons 27 hinged at the base 1 between the couples of guide columns 2 and acting on side sections 6 of caisson 5.
  • both the upper track 8 and lower track 9 are operated in such a way to run in the direction of arrows 28 to exert the required traction on the column of the piping to be launched, each by an electric motor 29 supported by caisson 4 or 5 and connected by means of gears to one of the toothed cylinders 7.
  • said servo control deenergizes and stops motors 29 by stopping consequently tracks 8 and 9 when the applied stretch is just the one prefixed to which must be subjected all the piping column to be launched; it energizes said motors 29 in such a way to run tracks 8 and 9 in the direction of arrows 28 when the stretch developed by the movers of the work pontoon comes higher than the prefixed stretch, and therefore the piping column is launched; it energizes motors 29 in the opposite sense, i.e., in such a way to run tracks 8 and 9 in the opposite direction of the arrows 28.
  • the operation of the tensioning device of the present invention is as follows:
  • the piping to be launched interposed between the two tracks 8 and 9 is supported by sliding rolls 12 and by sliding blocks 13 of the lower caisson 5; then by operating motor 26 the upper caisson 4 lowers, guided along the guide columns 2 by the above-mentioned screw device, until its track 9 comes in contact with the upper generatrix of the piping; after having fixed upper caisson 4 in this position by pins, by means of oleodynamic pistons 27, lower caisson 5 is pushed towards the generatrix of the piping until its track 9 does not exert, in cooperation with upper track 8 the necessary tightening force of the piping; afterwards the main motors 29 are actuated by means of the above-mentioned servo control, so that tracks 8 and 9 begin to exert the necessary traction on the piping.
  • Tensioning device for laying a piping column in the sea, comprising tightening means for gripping between them the pipe to be laid, control and vertical guide means to bring the above-mentioned tightening means in contact respectively with the upper generatrix and the lower generatrix of the pipe to be laid and for gripping said pipe with a determined frictional force, and actuating means to run the above-mentioned tightening means horizontally so as to exert the necessary traction on the piping column, characterized in the fact that said tightening means consists of two long opposed upper and lower tracks and vertically movable upper and lower caissons supporting said tracks, which upper and lower tracks run along the tightening zone of the pipe on sliding rolls supported by sets of sliding blocks hinged between them at the ends and angularly regulable with respect to each other by being bolted at the hinges to the respective above-mentioned caissons through threaded pivots of regulation and including track links to which are fixed curved saddles bearing upper coatings of little friction blocks of rubbery material.
  • Tensioning device as in claim 1 characterized in that each of said sets consists of three sliding blocks.
  • Tensioning device as in claim 1 characterized in that the above-mentioned curved saddles fixed to the track links consist each of several box-like welded plates shaped so as to present a frontal concave surface of the same diameter as that of the pipe to be gripped and to which is welded a dovetail guide extending throughout the length of said concave surface.
  • Tensioning device as in claim 3 characterized in that the above-mentioned welded plate curved saddles are each equipped with two side anchorage tabs reinforced by angle bars which are fixed to the track links through coupling pivots.
  • Tensioning device as in claim 3 characterized in that said little friction blocks are fitted in said dovetail guides of the welded plate curved saddles in such a number as to coat entirely the said concave surfaces of the saddles.
  • Tensioning device as vin claim 1 characterizedin that said little friction blocks are of neoprene.
  • Tensioning device as in claim 1 characterized in that said vertical guide means consists, for both the upper and lower tracks, of a base, a head and four couples of turned vertical guide columns, fixed to the four vertexes of the base and the head, and extending through associated cylindrical cavities in the side sections of the track-supporting caissons so that they are positively connected thereto.
  • Tensioning device as in claim 1 characterized in that the above-mentioned control means to bring the upper track in contact with the upper generatrix of the pipe to be laid consists of couples: of guide columns, a head connecting said columns and four side worm screws, vertically engaged between the said couples of guide columns and the side sections of the upper caissons, which are rotated about their axes by means of an electric motor fixed on said connecting head.
  • Tensioning device as in claim 8 characterized in that the upper track is locked in contact with the upper generatrix of the pipe to be laid by means of locking pins which are inserted in mating holes in the side sections of the upper caisson and the corresponding guide columns.
  • Tensioning device as in claim 1 characterized in that said control means of the lower track to tighten the grip of said tightening means upon the pipe to be laid with a determined frictional force consists of a base,
  • Tensioning device as in claim 1 characterized in that said actuating means to run the two opposed tracks horizontally so as to exert the necessary traction on the piping column to be laid consists of an electric motor for each track, said electric motors being driven by a servo control interlocked to the stretch applied to the piping column to be laid.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supports For Pipes And Cables (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
US00132514A 1970-04-09 1971-04-08 Piping tensioning device Expired - Lifetime US3739971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2308170 1970-04-09

Publications (1)

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US3739971A true US3739971A (en) 1973-06-19

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Country Status (4)

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US (1) US3739971A (es)
FR (1) FR2089215A5 (es)
GB (1) GB1291677A (es)
NL (1) NL165270C (es)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125612A2 (en) * 1983-05-16 1984-11-21 WesTech Gear Corporation Apparatus and method for simultaneously tensioning pipes
EP0296272A1 (en) * 1987-06-26 1988-12-28 Ottmar Karl Diehl Pipe tensioner machine
US5823712A (en) * 1995-03-10 1998-10-20 Allseas Group S.A. Method and installation for laying a pipeline on a surface located under water
US6439445B1 (en) * 1997-05-06 2002-08-27 Itrec B.V. Tensioner
US6729803B1 (en) * 1999-11-12 2004-05-04 Bouygues Offshore Clamp system for holding a pipe under tension, and a floating support including the system
US20050286979A1 (en) * 2002-10-23 2005-12-29 The Engineering Business Limited Mounting of offshore structures
US20060078385A1 (en) * 2003-03-21 2006-04-13 The Engineering Business Limited Apparatus for creating a local reduction in wave height
US20060153644A1 (en) * 2002-11-01 2006-07-13 The Engineering Business Limited Longitudinal load varying device for elongate members
US20060208245A1 (en) * 2005-03-21 2006-09-21 Ottmar Diehl Pipe tensioner machine
US7226244B1 (en) * 2002-08-19 2007-06-05 Itrec B.V. System for overload protection for pipe or cable laying structures
US20080145149A1 (en) * 2005-02-15 2008-06-19 The Engineering Business Limited Launch and Recovery Apparatus and Method
US20080301888A1 (en) * 2004-08-03 2008-12-11 The Engineering Business Limited Access Method Between Marine Structures and Apparatus
US20090028647A1 (en) * 2006-02-06 2009-01-29 Ihc Engineering Business Limited Installation Of Offshore Structures
US8127388B2 (en) 2005-08-01 2012-03-06 Ihc Engineering Business Limited Gangway apparatus
CN102434720A (zh) * 2010-09-29 2012-05-02 中国海洋石油总公司 履带板组装置
CN103277584A (zh) * 2013-04-23 2013-09-04 上海振华重工(集团)股份有限公司 丝杠传动顶升系统
NL2009150C2 (en) * 2012-07-06 2014-01-07 Itrec Bv Marine pipeline installation tensioner.
EP2719626A1 (en) * 2011-06-09 2014-04-16 Peña Haro, Bienvenido Hose extractor/retractor module
WO2014174287A3 (en) * 2013-04-23 2015-02-19 Mackinnon Marine Limited Tensioner pad assembly
CN105240616A (zh) * 2014-06-06 2016-01-13 天津市海王星海上工程技术股份有限公司 管线牵引装置
EP2620682A3 (en) * 2012-01-24 2017-11-15 Control Flow Inc. Linear pipe recovery/lay tensioners and methods of using same
EP3312486A1 (en) 2016-10-21 2018-04-25 Technip France Adjustable tensioner pad for a track-type tensioner and associated tensioner
WO2020227795A1 (en) 2019-05-15 2020-11-19 Subsea 7 Do Brasil Serviços Ltda Monitoring squeeze pressure of track tensioners
US11543055B2 (en) 2017-04-12 2023-01-03 Technip France Pipe tensioner

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5520921A (en) * 1978-07-31 1980-02-14 Nippon Steel Corp Jointing method of pipe laying on water bottom
US4687376A (en) * 1984-08-31 1987-08-18 Santa Fe International Corporation Multi-reel operational lines laying vessel
GB2210673B (en) * 1985-07-22 1990-03-28 Santa Fe Int Corp Straightening and tensioning device
GB2535195B (en) * 2015-02-12 2017-12-06 Technip France Pipeline tensioning apparatus and method
CN111924643B (zh) * 2020-08-12 2022-09-30 广西电网有限责任公司来宾供电局 一种上下压靠型电缆输送机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2797798A (en) * 1952-07-07 1957-07-02 Hallden Machine Company Tractor-type stock feed
US3024956A (en) * 1962-03-13 Cable engine pressure regulating equipment
US3285485A (en) * 1964-01-23 1966-11-15 Bowen Tools Inc Apparatus for handling tubing or other elongate objects

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3024956A (en) * 1962-03-13 Cable engine pressure regulating equipment
US2797798A (en) * 1952-07-07 1957-07-02 Hallden Machine Company Tractor-type stock feed
US3285485A (en) * 1964-01-23 1966-11-15 Bowen Tools Inc Apparatus for handling tubing or other elongate objects

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125612A2 (en) * 1983-05-16 1984-11-21 WesTech Gear Corporation Apparatus and method for simultaneously tensioning pipes
US4521132A (en) * 1983-05-16 1985-06-04 Western Gear Machinery Co. Apparatus and method for simultaneously tensioning pipes
EP0125612A3 (en) * 1983-05-16 1985-07-10 Western Gear Machinery Co. Apparatus and method for simultaneously tensioning pipes
EP0296272A1 (en) * 1987-06-26 1988-12-28 Ottmar Karl Diehl Pipe tensioner machine
US5823712A (en) * 1995-03-10 1998-10-20 Allseas Group S.A. Method and installation for laying a pipeline on a surface located under water
US6439445B1 (en) * 1997-05-06 2002-08-27 Itrec B.V. Tensioner
US6729803B1 (en) * 1999-11-12 2004-05-04 Bouygues Offshore Clamp system for holding a pipe under tension, and a floating support including the system
US7226244B1 (en) * 2002-08-19 2007-06-05 Itrec B.V. System for overload protection for pipe or cable laying structures
US20050286979A1 (en) * 2002-10-23 2005-12-29 The Engineering Business Limited Mounting of offshore structures
US7877933B2 (en) 2002-10-23 2011-02-01 Ihc Engineering Business Limited Mounting of offshore structures
US20060153644A1 (en) * 2002-11-01 2006-07-13 The Engineering Business Limited Longitudinal load varying device for elongate members
US7178708B2 (en) * 2002-11-01 2007-02-20 The Engineering Business Limited Longitudinal load varying device for elongate members
US20060078385A1 (en) * 2003-03-21 2006-04-13 The Engineering Business Limited Apparatus for creating a local reduction in wave height
US7984525B2 (en) 2004-08-03 2011-07-26 Ihc Engineering Business Limited Access method between marine structures and apparatus
US20080301888A1 (en) * 2004-08-03 2008-12-11 The Engineering Business Limited Access Method Between Marine Structures and Apparatus
US20080145149A1 (en) * 2005-02-15 2008-06-19 The Engineering Business Limited Launch and Recovery Apparatus and Method
US20060208245A1 (en) * 2005-03-21 2006-09-21 Ottmar Diehl Pipe tensioner machine
US7427006B2 (en) * 2005-03-21 2008-09-23 Ottmar Diehl Pipe tensioner machine
US8127388B2 (en) 2005-08-01 2012-03-06 Ihc Engineering Business Limited Gangway apparatus
US20090028647A1 (en) * 2006-02-06 2009-01-29 Ihc Engineering Business Limited Installation Of Offshore Structures
US8016519B2 (en) 2006-02-06 2011-09-13 Ihc Engineering Business Limited Installation of offshore structures
CN102434720A (zh) * 2010-09-29 2012-05-02 中国海洋石油总公司 履带板组装置
EP2719626A1 (en) * 2011-06-09 2014-04-16 Peña Haro, Bienvenido Hose extractor/retractor module
EP2719626A4 (en) * 2011-06-09 2015-03-25 Haro Bienvenido Peña MODULE FOR EXTRACTING / STORING PIPES
EP2620682A3 (en) * 2012-01-24 2017-11-15 Control Flow Inc. Linear pipe recovery/lay tensioners and methods of using same
WO2014007613A1 (en) * 2012-07-06 2014-01-09 Itrec B.V. Marine pipeline installation tensioner
CN104428570B (zh) * 2012-07-06 2016-11-23 伊特里克公司 海底管线安装张紧装置
CN104428570A (zh) * 2012-07-06 2015-03-18 伊特里克公司 海底管线安装张紧装置
NL2009150C2 (en) * 2012-07-06 2014-01-07 Itrec Bv Marine pipeline installation tensioner.
US9568122B2 (en) 2012-07-06 2017-02-14 Itrec B.V. Marine pipeline installation tensioner
CN103277584B (zh) * 2013-04-23 2015-06-10 上海振华重工(集团)股份有限公司 丝杠传动顶升系统
GB2513342B (en) * 2013-04-23 2016-04-13 Mackinnon Marine Ltd Tensioner pad assembly
WO2014174287A3 (en) * 2013-04-23 2015-02-19 Mackinnon Marine Limited Tensioner pad assembly
CN103277584A (zh) * 2013-04-23 2013-09-04 上海振华重工(集团)股份有限公司 丝杠传动顶升系统
CN105240616A (zh) * 2014-06-06 2016-01-13 天津市海王星海上工程技术股份有限公司 管线牵引装置
EP3312486A1 (en) 2016-10-21 2018-04-25 Technip France Adjustable tensioner pad for a track-type tensioner and associated tensioner
WO2018073453A1 (en) 2016-10-21 2018-04-26 Technip France Adjustable tensioner pad for a track-type tensioner and associated tensioner
US11543055B2 (en) 2017-04-12 2023-01-03 Technip France Pipe tensioner
WO2020227795A1 (en) 2019-05-15 2020-11-19 Subsea 7 Do Brasil Serviços Ltda Monitoring squeeze pressure of track tensioners
US11846369B2 (en) 2019-05-15 2023-12-19 Subsea 7 Do Brasil Servicos Ltda Monitoring squeeze pressure of track tensioners

Also Published As

Publication number Publication date
NL7104649A (es) 1971-10-12
GB1291677A (en) 1972-10-04
FR2089215A5 (es) 1972-01-07
NL165270C (nl) 1980-10-15
NL165270B (nl) 1980-10-15

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