WO2000033990A1 - Procede de realisation de tuyaux a raccorder dans une canalisation a double paroi et machine pour sa mise en oeuvre - Google Patents
Procede de realisation de tuyaux a raccorder dans une canalisation a double paroi et machine pour sa mise en oeuvre Download PDFInfo
- Publication number
- WO2000033990A1 WO2000033990A1 PCT/FR1999/003064 FR9903064W WO0033990A1 WO 2000033990 A1 WO2000033990 A1 WO 2000033990A1 FR 9903064 W FR9903064 W FR 9903064W WO 0033990 A1 WO0033990 A1 WO 0033990A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bars
- pipe
- tube
- machine according
- wall
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
- B21D39/048—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using presses for radially crimping tubular elements
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49879—Spaced wall tube or receptacle
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49909—Securing cup or tube between axially extending concentric annuli
- Y10T29/49913—Securing cup or tube between axially extending concentric annuli by constricting outer annulus
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5367—Coupling to conduit
Definitions
- the invention is essentially related to the manufacture of so-called double-walled or double-walled pipes, that is to say pipes which are formed in common part by two coaxial tubes, namely an internal tube and an external tube. .
- double-walled or double-walled pipes that is to say pipes which are formed in common part by two coaxial tubes, namely an internal tube and an external tube.
- the purpose of such a double wall is to provide an annular space between the two tubes.
- the invention aims more particularly to facilitate the production of the ends of such pipes when this annular space between the two tubes must be closed at the ends of the pipe, for one reason or another.
- This is particularly the case when the intermediate annular space of the double wall serves as a thermal insulation envelope for a fluid circulating inside the internal tube.
- the invention lends itself particularly well to the conditions of manufacture and implementation of such pipes when they are intended to constitute the successive sections of a continuous pipe.
- pipelines for petroleum products, commonly called pipelines.
- the invention is embodied in different forms, which are expressed in particular in the terms of a process for manufacturing double-walled pipes by deformation of an end portion of an outer tube around an end portion of a tube internal until bringing them closer to one of the other in closing the annular space which they provide between them in the running part of the pipe, or which is expressed in terms of device by considering a machine comprising means specific to the implementation of this process. It also relates to an installation for manufacturing double-walled pipes in series integrating such a machine.
- the subject of the invention is therefore a method of producing pipes to be connected in a double-walled pipeline, characterized in that, after having brought an internal tube and an external tube in a relative coaxial arrangement leaving between them an annular space up to to a connection zone at the end of the pipe where the external tube is set back from the longitudinal internal tube, the wall is deformed with a terminal part of the external tube in restriction of its diameter until bringing its end contiguous with the tube internal closure of said annular space, acting concentrically by progressive pressure on its wall by means of a series of bars which are distributed annularly around said connection zone and which is caused to tilt in the radial direction from a crown fixed relative to the external tube on which they are hinged.
- the tilting of said bars is caused by admitting a progressive fluidic pressure in an annular chamber with flexible wall and variable volume surrounding all of said bars.
- the invention also relates to a machine for implementing the method referred to above, characterized in that it comprises on the one hand a rigid mobile structure to be engaged around a connection area at the end of a pipe where an external tube ends in withdrawal from an internal tube, said tubes forming between them an annular space, on the other hand active members comprising a series of bars distributed annularly and mounted articulated at a rear end on a fixed crown of said structure which is common to them, as well as means of simultaneous tilting of the different bars in the radial direction to incline them closer to their opposite front ends towards the longitudinal axis of the annular distribution.
- said means for tilting said bars comprises an inflatable annular chamber, with a flexible wall and variable volume, surrounding all of said bars, and means for admitting a progressive fluidic pressure into said chamber.
- the rigid structure may include means for confining said chamber in the inflated state, comprising in particular an external envelope, and preferably also an internal flank to this envelope opposite to said crown on which said bars are articulated.
- said rigid structure is equipped with lifting and transport means for engaging it around the connection zone by the free end of the pipe, or for releasing it at the end of the operation, when said bars are brought back in inactive position away from the wall of the outer tube.
- said structure comprises means for guiding its movements along the pipe cooperating with the external tube in the main part of the pipe to ensure its longitudinal and radial centering with respect to the axis of the pipe, said means preferably comprising, the rear of a cantilever beam extending longitudinally away from the pipe, symmetrical rollers further tending to keep said beam in orientation along an upper generatrix of said pipe.
- each of said bars is active under pressure on the end part of the outer tube by means of a shoe which it carries, which advantageously has a portion with an inclined longitudinal profile. relative to said bar.
- said shoe has a concave transverse profile whose radius of curvature is preferably of the same order of magnitude as that of the internal tube.
- said rigid structure comprises rods for guiding the various bars radially, said rods being fixed on a central ring, and there is provided on each of said rods a return spring of the corresponding bar towards its inactive position away from the wall of the outer tube.
- Each of said bars is retained on said crown by stoppers in abutment on the radial faces of the latter.
- each of said bars a strip oriented perpendicularly to it and sliding on a finger integral with the rigid structure during the tilting operations of the bars.
- a temporary annular shim providing a weld clearance between the end of the outer tube and the wall of the inner tube at the end of the operation of the machine.
- an intermediate layer of relatively small constant thickness is provided around said bars, in particular for protecting the wall of an inflatable annular chamber.
- the invention also relates to an installation for the mass production of pipes to be connected end to end in a double-walled pipe, characterized in that it comprises a machine as described above for the chain processing of the ends of successive pipes.
- FIG. 1 schematically shows a machine according to the invention in the process of being installed on the end of a pipe, in accordance with a view in partial section along a diametral plane of the assembly;
- - Figure 2 is a perspective view of a detail of Figure 1 showing centering rollers along a straight generator of the cylindrical surface of the outer tube of the pipe;
- FIG. 3 schematically represents the same machine as it appears seen at the end on the left of FIG. 1;
- FIG. 4 is a partial perspective view illustrating one of the bars of the machine forming a lever, in its relations with the constituent elements of the rigid structure;
- FIG. 5 illustrates the shape of a bar at the level of the pad it carries, by a detailed view of its transverse profile
- FIG. 6 shows the active parts of the machine in a partial view in longitudinal section, their position being, as in Figure 1, that they occupy before the start of their action on a tube to be deformed;
- Each pipe 1 is therefore essentially constituted, as has already been indicated, from an external tube 20 and an internal tube 10. It is conventional to seek to transfer to the latter various constraints such as those which are found generated during operations manufacturing necessary for closing the annular space 31 between the two tubes and for butt welding of successive pipes constituting a continuous pipe.
- the tubes are made of steel, that the rigid connections between different parts are made by welding, that the annular space 31 is advantageously occupied by an insulating material put implemented in the form of plates which are wound around the internal tube, that the thermal insulation capacity can be improved by making a reduced pressure prevail in this annular space, that once two internal tubes welded end to end continuity of a pipe between successive pipes at the level of the external tubes and that of the insulating annular space can, at best, be ensured by involving an intermediate piece forming a cylindrical sleeve for connection between the two external tubes of successive pipes.
- the internal tube 10 is longer than the external tube 20, so that at each end of the running part, therefore on the left in the figure, the internal tube projects from the external tube.
- the respective end portions of the two tubes define there a zone 2 of connection with the opposite end of a other identical pipe.
- the end of that 3 of the outer tube 20 is longitudinally recessed therein with respect to the free end of that 4 of the inner tube 10.
- connection zone 2 The machine used to complete the creation of the connection zone 2 is shown diagrammatically as a whole in this same figure 1.
- This machine is mobile for the chain processing of the ends of different pipes.
- a lifting system 32 allowing it to be suspended from a lifting beam.
- This system is illustrated by a cable 33 hooking onto ring lugs 34 welded to the rigid structure of the machine.
- the structure supporting the active members in deformation of the external tube is extended by a beam 35 which, in the functional position, is placed along the upper generatrix of the current part of the pipe. At its end, to the right of the figure, it rests on the external tube 20, on which it is guided in longitudinal movement of the machine by rollers 36.
- these rollers are actually double, to ensure not only the rolling capacity at constant distance from the pipe, but also a centering of the machine relative to the upper generator. It is therefore two centering rollers 37 and 38, oriented symmetrically in a V straddling the tube.
- connection zone 2 On the opposite side, on the left in FIG. 1, the members which have been called active, on the grounds that they are used for producing the connection zone 2, respect a geometry with symmetry of revolution.
- the rigid structure in which they are mounted comprises a cylindrical shell 41 inside of which are a series of tilting bars 42. These bars are illustrated by admitting that they are all identical to each other. They extend longitudinally and are distributed in an annular crown around the pipe.
- the bars 42 are pivotally mounted on an annular ring 43 integral with the beam 35 and therefore also with the ferrule 41.
- the movements of their front movable end are guided by respective rods 44, the latter being mounted rigid between the ferrule 41 and a central ring 45.
- an inflatable annular chamber 46 When the latter is brought to the inflated state, by admission of water or other fluid through a connector 47, it fills a whole space between the shell 41 and all of the bars 42.
- the bars 42 are supplemented by pressure pads 48, and that at their movable end, the bars 42 are individually subjected, against the pressure coming from the chamber 46, with the return action of a helical spring 49 arranged around the corresponding rod 44 and bearing on the one hand on the internal face of the bar and on the other hand on the central ring 45.
- a fluid pressure is admitted into the chamber 46, generally by introducing pressurized water therein through the connector 47, this chamber swells and, because the expansion of its variable volume is limited by the ferrule 41 which the envelope externally, the pressure gradually increases. It increases sufficiently to exert, against the springs 49 and the resistance of the outer tube 20, a pushing force on the bars 42 which tends to cause them all to tilt simultaneously in the radial direction.
- the pads 48 act in concentric pressure on the wall of the outer tube 20, thus causing the deformation of this wall in approach to that of the inner tube.
- the pressure exerted through the chamber 46 is uniformly distributed over the various bars 42 at all times, not only in the radial direction annularly around the pipe, but also in the longitudinal direction along the external face of the bars.
- the inclined profile given to the portions 63 of the pads 48 has the consequence that the constriction of the external tube varies progressively from the rear, where it is zero at the junction of the current part of the pipe, up to its end. free at the front, where it becomes such that at the end of the operation, the wall of the external tube comes into contact with that of the internal tube provided with its welding wedge, the latter remaining insensitive to deformations. More precisely, the wall of the tube comes into abutment over the entire perimeter of an intermediate wedge which will be described later.
- the number of bars 42, with their associated individual members, is variable depending on the application conditions. It is in particular in direct relation with the distance that their movable end must travel when it causes their tilting, therefore with the original difference between the radii of the two tubes. Furthermore, it is calculated so that the clearance between adjacent bars, at the level of their pads arriving under pressure on the outer tube, is reduced enough not to induce pinching of the outer tube.
- each bar 42 with the fixed or mobile members which are associated with it, with reference to FIG. 4 mainly, but also, incidentally, to the various other figures of drawings.
- this rod 44 is an integral part of the rigid structure. It is engaged through the ferrule 41 until it stops its head away from the longitudinal axis of the machine. At its opposite end, it is threaded and fixed by screwing into the outer edge of the central ring 45. The rigidity of the mounting of the latter simply results from the combined effect of the different rods 44.
- the chamber 46 which has been shown partially the flexible wall 52 extends continuously around all of the bars 42. It appears better in the view of FIG. 3 that the different bars 42 are almost contiguous, at least by their rear articulation ends 53 and at their external faces 54.
- each bar 42 forms a fork 55 thanks to which it can be traversed by the corresponding rod 44.
- the spring 49 which tends to tilt the bar 42 to its inactive position by tilting it on the longitudinal axis away from the pipe, is supported on the one hand on the edge outer 56 of the ring 45, on the other hand on the radially inner face 57 of the bar 42, by means of a washer 58.
- the bar 42 is linked to the crown 43 by means which secure a fixed position of the rear end while allowing the necessary articulation of the tilting of the bar.
- a strip 64 there is provided at the rear end of the bar 42, a strip 64, welded on it, which is oriented perpendicular to the bar outward. Its main role is to facilitate the mounting of the bars on the crown 43.
- the strip 64 is associated with a finger 65 which is welded longitudinally on the external face 66 of the crown 43 (or otherwise made integral with the rigid structure ) and which passes through the end of the strip 64 itself.
- each strip thus prevents the bar to which it belongs from disengaging from the crown 43. Thereafter, the strip 64 slides freely on finger 65 during the tilting operations of the bar 42 between two extreme positions, which correspond one to the stop of the strip 64 on the rear face of the crown 43, the other to its stop on a nut 67 present at the end of the finger 65.
- the bar 42 is provided with two tabs 60 and 61 which frame the crown 43, in abutment on its rear and front faces respectively (reference 51 for the front face in FIG. 4).
- the main purpose of these cleats is to prevent the bar from sliding longitudinally relative to the crown 43. They therefore participate, with the lamella 64 associated with the same bar, in maintaining this tilting bar around a fixed point of articulation.
- the bars 42 can be more simply mounted in the crown 43 by means of screws passing through their thickness with play. This play allows the same freedom of inclination to be found on the longitudinal axis.
- each shoe 48 has a concave curved transverse profile 59.
- the dimensions are calculated to best limit the difference between adjacent bars when they pass from their inactive position to their final active position as the terminal part of the outer tube is deformed. These dimensional conditions essentially apply to the bars considered at the level of their pads, and mainly according to the internal face of the latter.
- the assembly is constructed in such a way so that in their inactive position, the bars 42 are inclined on the axis of the pipe 1, away from any contact between the pads and the external tube 20 not yet deformed, and that in their final active position, they are simply brought back parallel to the axis of the pipe.
- annular flank 62 disposed opposite the support crown 43.
- This flank is welded integral with the ferrule 41, perpendicular to it of its internal side, the latter playing the role of a confinement envelope for the inflated chamber, in combination with the crown 43 and the sidewall 62.
- This wedge is of constant thickness, practically insensitive to the pressure of the active members of the machine of the invention, since it closely follows the contour of the internal tube. This is why it was not taken into account previously, considering that everything takes place as if it were an integral part of the internal tube 10 during the operations of deformation of the external tube 20. It is easily removed when the bars 42 (more precisely their pads 48) cease their pressure, due to the elastic return of the outer tube.
- the clearance between the inner tube and the outer tube is thus constant (within the tolerance close to the thickness of the shim), which facilitates the subsequent welding operations in closing the annular space between the two tubes and improves the quality. of the weld obtained.
- the temporary wedge 69 illustrated in FIG. 6 advantageously has lines of weakness 71, possibly cut lines, extending longitudinally, at least all around the part of its length which is interposed between the tubes thus sparing the weld gap.
- the objective is to improve the faculty, which it already offers because of its finesse, to lend itself to the inevitable irregularities of the perimeter of the inner tube 10, better than it would by the other part of its length.
- a machine such as the one just described can be produced with 25 or 26 active bars distributed at angular intervals of the order of 14 degrees and bearing each a 40 mm wide shoe.
- the clearance between the pads is of the order of 7 mm at the start of the bar tilting operation.
- the pressure applied to the tube by the portion 63 with an inclined longitudinal profile is all the greater with respect to the fluid pressure prevailing in the inflatable chamber at a determined instant of the progressive pressurization.
- the machine is easy to move in order to process the ends of successive pipes intended to be connected in a chain intended to be connected end to end in order to constitute a continuous pipe, by sealing the annular space between internal tube and external tube, in the case where an insulating material is placed in this space in the meantime.
- the welding operations are facilitated by the fact that the weld clearance formed beforehand by means of the shim described is constant.
- the welding operations do not fear the risk of oil leaks and the cleaning operations can be carried out with a torch.
- the invention is in no way limited by the precise indications which have been provided with regard to particular conditions of industrial application of particular industrial application. It extends not only to all variants of implementation where the dimensional data encrypted would be different, but also to all variants using means deviating from those which have been described while fulfilling the same functions.
- each shoe 48 could be made in one piece with the corresponding bar 42, even though we preferred to describe it as a separate piece coming to be secured to the bar itself, which will most often be the case, if only for technological reasons of manufacturing convenience falling within the metallurgy.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9907707-8A BR9907707A (pt) | 1998-12-08 | 1999-12-08 | Processo de produção de tubulações a serem ligadas em uma canalização de parede dupla, máquina para implementação do processo, e, instalação de fabricação em série de tubulações a serem ligadas topo a topo em uma canalização de parede dupla |
EP99958278A EP1053065B1 (fr) | 1998-12-08 | 1999-12-08 | Procede de realisation de tuyaux a raccorder dans une canalisation a double paroi et machine pour sa mise en oeuvre |
US09/601,137 US6446321B1 (en) | 1998-12-08 | 1999-12-08 | Method for producing pipes to be connected in a double-wall piping system and implementing machine |
NO20003982A NO318202B1 (no) | 1998-12-08 | 2000-08-07 | Fremstilling av ror for dobbelveggrorledning, samt anordning for samme |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9815491A FR2786713B1 (fr) | 1998-12-08 | 1998-12-08 | Procede de realisation de tuyaux a raccorder dans une canalisation a double paroi et machine pour sa mise en oeuvre |
FR98/15491 | 1998-12-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000033990A1 true WO2000033990A1 (fr) | 2000-06-15 |
Family
ID=9533729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/003064 WO2000033990A1 (fr) | 1998-12-08 | 1999-12-08 | Procede de realisation de tuyaux a raccorder dans une canalisation a double paroi et machine pour sa mise en oeuvre |
Country Status (6)
Country | Link |
---|---|
US (1) | US6446321B1 (fr) |
EP (1) | EP1053065B1 (fr) |
BR (1) | BR9907707A (fr) |
FR (1) | FR2786713B1 (fr) |
NO (1) | NO318202B1 (fr) |
WO (1) | WO2000033990A1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO335033B1 (no) | 2000-05-10 | 2014-08-25 | Itp | Rørledning med dobbel rørvegg og stor bøyestivhet |
FR2817319B1 (fr) | 2000-11-29 | 2008-12-19 | Itp | Pipeline double enveloppe a resistance amelioree au flambage |
FR2812370B1 (fr) | 2000-07-25 | 2003-08-08 | Itp | Dispositif de flottaison annele d'un pipeline a grande profondeur |
US20050212285A1 (en) * | 2004-03-29 | 2005-09-29 | Ope International, L.P. | Dual-walled piping system and methods |
FR2888327B1 (fr) | 2005-07-05 | 2008-07-04 | Saipem S A Sa | Procede et dispositif de controle de soudure de raccordement de conduite par sonde a ultrasons |
FR2897919B1 (fr) * | 2006-02-24 | 2011-04-01 | Saipem Sa | Element de conduites coaxiales dont la conduite interne est sous contrainte de traction et procede de fabrication |
AU2007315926A1 (en) | 2006-11-02 | 2008-05-08 | Acergy France Sa | Insulated pipelines and methods of construction and installation thereof |
FR2937706B1 (fr) | 2008-10-29 | 2013-02-22 | Saipem Sa | Ensemble de conduites coaxiales comprenant un manchon d'isolation thermique |
FR2948164B1 (fr) * | 2009-07-17 | 2011-06-24 | Technip France | Methode de fabrication de conduites tubulaires rigides a double enveloppe et installation dediee a la fabrication de ces conduites |
US20120155964A1 (en) * | 2010-06-25 | 2012-06-21 | George Carter | Universal Subsea Oil Containment System and Method |
GB2498740B (en) | 2012-01-25 | 2014-09-10 | Subsea 7 Ltd | Connections for subsea pipe-in-pipe structures |
CN108453186B (zh) * | 2018-04-03 | 2024-04-09 | 扬州市欧亿照明电气有限公司 | 一种用于路灯杆焊接的胀管装置 |
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US1818435A (en) * | 1929-02-20 | 1931-08-11 | Frank H Smith | Apparatus for joining pipes |
US2311662A (en) * | 1937-02-23 | 1943-02-23 | Weatherhead Co | Forming method |
US2999405A (en) * | 1957-12-24 | 1961-09-12 | Smith Corp A O | Apparatus for radially compressing articles |
DE2153054A1 (de) * | 1971-10-25 | 1973-05-10 | Kramatorskij Ni I Pt I Mash | Keilspannvorrichtung |
EP0593838A1 (fr) * | 1992-10-23 | 1994-04-27 | FORANTE ORAZIO & C. S.n.c. di Orazio Forante | Machine pour presser des tubes, notamment les extrémités des tubes oléodynamiques à caoutchouc pour former des pièces de fixation |
FR2758872A1 (fr) * | 1997-01-30 | 1998-07-31 | Itp | Enveloppe d'isolation thermique, notamment pour la construction de canalisations sous-marines vehiculant des produits petroliers |
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GB1569126A (en) * | 1976-02-24 | 1980-06-11 | Andrew Hydraulics Int | Device for crimping tubular elements |
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FI791227A (fi) * | 1979-04-17 | 1980-10-18 | Jorma Lillbacka | Pressanordning |
US4244091A (en) * | 1979-09-21 | 1981-01-13 | The Gates Rubber Company | Hose crimping apparatus |
US4360290A (en) * | 1980-12-17 | 1982-11-23 | Shell Oil Company | Internal pipeline plug for deep subsea pipe-to-pipe pull-in connection operations |
US4781055A (en) * | 1985-11-18 | 1988-11-01 | Stratoflex, Inc. | Crimping machine |
US4832530A (en) * | 1988-02-08 | 1989-05-23 | Andersen Scott F | Apparatus and method for joining pipe sections underwater |
FR2700980B1 (fr) * | 1993-02-01 | 1995-04-21 | Caillau Ets | Bague à rétreindre et son procédé de fabrication. |
-
1998
- 1998-12-08 FR FR9815491A patent/FR2786713B1/fr not_active Expired - Lifetime
-
1999
- 1999-12-08 US US09/601,137 patent/US6446321B1/en not_active Expired - Lifetime
- 1999-12-08 BR BR9907707-8A patent/BR9907707A/pt not_active IP Right Cessation
- 1999-12-08 WO PCT/FR1999/003064 patent/WO2000033990A1/fr active IP Right Grant
- 1999-12-08 EP EP99958278A patent/EP1053065B1/fr not_active Expired - Lifetime
-
2000
- 2000-08-07 NO NO20003982A patent/NO318202B1/no not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1818435A (en) * | 1929-02-20 | 1931-08-11 | Frank H Smith | Apparatus for joining pipes |
US2311662A (en) * | 1937-02-23 | 1943-02-23 | Weatherhead Co | Forming method |
US2999405A (en) * | 1957-12-24 | 1961-09-12 | Smith Corp A O | Apparatus for radially compressing articles |
DE2153054A1 (de) * | 1971-10-25 | 1973-05-10 | Kramatorskij Ni I Pt I Mash | Keilspannvorrichtung |
EP0593838A1 (fr) * | 1992-10-23 | 1994-04-27 | FORANTE ORAZIO & C. S.n.c. di Orazio Forante | Machine pour presser des tubes, notamment les extrémités des tubes oléodynamiques à caoutchouc pour former des pièces de fixation |
FR2758872A1 (fr) * | 1997-01-30 | 1998-07-31 | Itp | Enveloppe d'isolation thermique, notamment pour la construction de canalisations sous-marines vehiculant des produits petroliers |
Also Published As
Publication number | Publication date |
---|---|
NO20003982D0 (no) | 2000-08-07 |
FR2786713B1 (fr) | 2001-02-16 |
BR9907707A (pt) | 2000-11-14 |
US6446321B1 (en) | 2002-09-10 |
NO20003982L (no) | 2000-08-07 |
NO318202B1 (no) | 2005-02-14 |
FR2786713A1 (fr) | 2000-06-09 |
EP1053065A1 (fr) | 2000-11-22 |
EP1053065B1 (fr) | 2003-07-09 |
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