• 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:
    The tip (14) comprises first end sections (32) of a first layer of armor (24) and second end sections (32) of a second layer of armor (25) arranged externally relative to the first end portions (32). It comprises an outer ring (94) externally applied on the second end sections (32), an intermediate ring (92) interposed between the first end sections (32) and the second end sections (32). The second end portions (32) are clamped between the outer ring (94) and the intermediate ring (92). The first end portions (32) are also clamped between the intermediate ring (92) and a bearing surface (96). The intermediate ring (92) is at least partially slotted.
    公开号:FR3074251A1
    申请号:FR1761380
    申请日:2017-11-29
    公开日:2019-05-31
    发明作者:Benoit Galloyer；Paul Phillips
    申请人:Technip France SAS；
    IPC主号:
    专利说明:

    Connection end piece of a flexible fluid transport pipe, pipe and associated method
    The present invention relates to a connection end piece of a flexible fluid transport pipe, the flexible pipe comprising at least one pressure sheath and a plurality of layers of tensile armor disposed externally relative to the pressure sheath, the tip including:
    - an end vault extending along a central axis;
    - an outer cover fixed on the end vault and delimiting with the end vault, a chamber for receiving an end section of the armor elements;
    - First end sections of the armor elements of a first armor layer and second end sections of the armor elements of a second armor layer, arranged externally relative to the first sections of end;
    - an outer ring applied externally to the second end sections;
    - an intermediate ring, interposed between the first end sections and the second end sections, in contact with the first end sections and with the second end sections, the intermediate ring extending around the axis central between a rear edge and a front edge, the second end sections being pinched between the outer ring and the intermediate ring, the first end sections being pinched between the intermediate ring and a bearing surface.
    The pipe is in particular a flexible unbonded type pipe intended for the transport of hydrocarbons through a body of water, such as an ocean, a sea, a lake or a river.
    Such flexible pipe is made, for example according to the normative documents API 17J, Issue 4 May 2014 and API RP 17B, 5th Edition - May 2014 set by the American Petroleum Institute.
    The pipe is generally formed by a set of concentric and superimposed layers. It is considered to be "unbound" in the sense of the present invention when at least one of the layers of the pipe is able to move longitudinally relative to the adjacent layers during bending of the pipe. In particular, an unbound pipe is a pipe devoid of binding materials connecting the layers forming the pipe.
    The pipe is generally arranged through a body of water, between a bottom assembly, intended to collect the fluid exploited in the bottom of the body of water, and a floating surface assembly intended to collect and distribute the fluid. The surface assembly may be a semi-submersible platform, an FPSO or other floating assembly.
    In some cases, for the exploitation of fluids in deep waters, the flexible pipe has a length greater than 800 m. The ends of the pipe have end fittings for connection to the bottom assembly and the surface assembly.
    These pipes undergo very high forces in axial traction, especially when the body of water in which the pipe is arranged is very deep.
    In this case, the upper end connecting the pipe to the surface assembly must take up a very high axial tension, which can reach several hundred tonnes. These forces are transmitted to the end piece via the tensile armor plies extending along the pipe.
    The axial tension presents not only a high average value, but also permanent variations as a function of the vertical movements of the surface assembly and of the pipe, under the effect of the agitation of the expanse of water caused by the swell or by waves.
    Variations in axial tension can reach several tens of tonnes and be repeated continuously during the service life of the pipe. In 20 years, the number of cycles can reach more than 20 million.
    It is therefore necessary to ensure a particularly robust fixing between the plies of tensile armor and the body of the end piece.
    To ensure effective fixing, it is known to drown the end sections of the armor wires in a block of resin poured into the chamber delimited by the arch and by the cover. It is also known to modify the configuration of the wires in the end piece to make them follow an ascending cone, then on a descending cone, in order to promote the capstan effect linked to the helical trajectory of the armor wires. Optionally, hooks are formed at the end of each armor wire to improve mechanical blocking.
    However, when the end piece is subjected to dynamic stresses, the fatigue stresses are very high and are likely to create failures in particular at the level of the hooks, and at the level of the region in which the armors take off away from the sheath and are embedded in the resin.
    To overcome this problem, WO2015 / 082275 describes a nozzle of the aforementioned type, in which first end sections of a first layer of armor are pinched between an inner ring and an intermediate ring and second end sections of a second layer of armor is pinched between the intermediate ring and an external ring.
    Such an arrangement avoids strongly deforming the wires at the anchoring means and notably improves the fatigue resistance of the wires.
    However, it requires very precise tightening of the rings with respect to each other, which can be complicated to implement.
    An object of the invention is therefore to provide a nozzle which guarantees an effective axial tension recovery when many cycles of axial tension variation are applied to the pipe, and which is nevertheless simple to assemble.
    To this end, the invention relates to a nozzle of the aforementioned type, characterized in that the intermediate ring is at least partially split.
    The tip according to the invention may include one or more of the following characteristics, taken alone or in any technically possible combination:
    - the intermediate ring is made in one piece;
    - The intermediate ring has at least one partial slot opening into one of the front edge and the rear edge, without opening into the other of the front edge and the rear edge;
    - In at least one median longitudinal half-section of the intermediate ring passing through the slot, the area occupied by the slot is greater than 50% of the total area of the median longitudinal half-section of the intermediate ring;
    - The intermediate ring has a plurality of partial slots distributed angularly around the central axis;
    - the or each partial slot opens into the front edge;
    - The intermediate ring has at least one slot longitudinally passing through the intermediate ring, the slot opening into the front edge and into the rear edge of the ring;
    - The intermediate ring has a frustoconical outer peripheral surface, on which the second end sections are supported and a cylindrical or frustoconical inner peripheral surface on which the first end sections are supported;
    - The intermediate ring has at least one slot opening radially into the outer peripheral surface and into the inner peripheral surface;
    - It has an inner ring defining the support surface;
    - It has an annular flange fixed on the end vault, the annular flange defining the support surface;
    - The outer cover internally defines, in the receiving chamber, a front transverse stop, the outer ring being wedged on the front transverse stop.
    The invention also relates to a flexible pipe comprising at least one pressure sheath, a plurality of layers of tensile armor arranged externally relative to the pressure sheath, and at least one connection end piece as described above.
    The invention also relates to a method of assembling a tip of a flexible pipe, the flexible pipe comprising comprising at least one pressure sheath and a plurality of layers of tensile armor disposed externally relative to the sheath. pressure, the process comprising the following steps:
    - provision of an outer ring on second end sections of a second layer of armor;
    - insertion of an intermediate ring at least partially split between first end sections of a first layer of armor and the second end sections of the second layer of armor located externally relative to the first end sections , the intermediate ring being in contact with the first end sections and with the second end sections;
    - arrangement of the first end sections of the first layer of armor on a support surface;
    - pinching of the second end sections between the outer ring and the intermediate ring, and pinching of the first end sections between the intermediate ring and the bearing surface under the effect of the radial deformation of the intermediate ring.
    The method according to the invention may include one or more of the following characteristics, taken alone or in any technically possible combination:
    - the second end sections and the first end sections are pinched by radial or axial crimping of the outer ring.
    The invention will be better understood on reading the description which follows, given solely by way of example, and made with reference to the appended drawings, in which:
    - Figure 1 is a partially exploded perspective view of a first flexible pipe according to the invention;
    - Figure 2 is a sectional view along a median axial plane of the end piece of the flexible pipe of Figure 1;
    - Figure 3 is a side view of a partially split intermediate ring intended to be introduced into the nozzle of Figure 2;
    - Figure 4 is a sectional view along a median axial plane of the ring of Figure 3;
    - Figure 5 is a view of a half-section along a median axial plane of the intermediate ring;
    - Figure 6 is a view similar to Figure 2, during assembly of the nozzle;
    - Figure 7 is a view similar to Figure 6, for a mounting variant;
    - Figure 8 is a view similar to Figure 2 of a second nozzle according to the invention;
    - Figure 9 is a view similar to Figure 8 of a third nozzle according to the invention;
    - Figure 10 is a sectional view along a median axial plane of a fully split intermediate ring variant.
    In what follows, the terms "exterior" and "interior" are generally understood to be radially with respect to an axis A-A 'of the pipe, the term "exterior" being understood to be relatively more distant. radially from the axis A-A 'and the term "interior" extending as relatively closer radially from the axis A-A' of the pipe.
    The terms "front" and "rear" are understood to be axially relative to an axis A-A 'of the pipe, the term "front" being understood to be relatively more distant from the center of the pipe and more near one of its ends, the term “rear” being understood as being relatively closer to the middle of the pipe and more distant from one of its ends. The middle of the pipe is the point of the pipe located at equal distance from the two ends of the latter.
    A first flexible pipe 10 according to the invention is partially illustrated in FIG. 1 and in FIG. 2.
    The flexible pipe 10 comprises a central section 12 illustrated in part in FIG. 1. It comprises, at each of the axial ends of the central section 12, an end piece 14 (not visible in Figure 1), the relevant parts of which are shown. in figure 2.
    Referring to Figure 1, the pipe 10 defines a central passage 16 for the circulation of a fluid, advantageously a petroleum fluid. The central passage 16 extends along an axis A-A ’, between the upstream end and the downstream end of the pipe 10. It opens out through the end pieces 14.
    The flexible pipe 10 is intended to be disposed through a body of water (not shown) in a facility for the exploitation of fluid, in particular of hydrocarbons.
    The body of water is, for example, a sea, a lake, or an ocean. The depth of the body of water at the right of the fluid exploitation installation is for example between 500 m and 3000 m.
    The fluid operating installation comprises a surface assembly, in particular a floating surface, and a bottom assembly (not shown) which are generally connected together by the flexible pipe 10.
    The flexible pipe 10 is preferably an "unbound" pipe (designated by the English term "unbonded").
    At least two adjacent layers of the flexible pipe 10 are free to move longitudinally relative to one another during bending of the pipe. Advantageously, all the layers of the flexible pipe are free to move relative to each other. Such conduct is described for example in the standards published by the American Petroleum Institute (API) API 17J, Issue 4 May 2014 and API RP 17B, 5th Edition - May 2014.
    As illustrated in FIG. 1, the pipe 10 delimits a plurality of concentric layers around the axis A-A ’, which extend continuously along the central section 12 to the end pieces 14 located at the ends of the pipe.
    According to the invention, the pipe 10 comprises at least a first sheath 20 based on polymer material advantageously constituting a pressure sheath.
    The pipe 10 also comprises layers of tensile armor 24, 25 arranged externally relative to the first sheath 20.
    Advantageously, and according to the desired use, the pipe 10 further comprises an internal carcass 26 disposed inside the pressure sheath 20, a pressure vault 28 interposed between the pressure sheath 20, possibly a hoop, the or the layers of tensile armor 24, 25 and an external sheath 30, intended for the protection of the pipe 10.
    In known manner, the pressure sheath 20 is intended for sealingly confining the fluid transported in the passage 16. It is formed from a polymer material, for example based on a polyolefin such as polyethylene, based on a polyamide such as PA11 or PA12, or based on a fluorinated polymer such as polyvinylidene fluoride (PVDF).
    As a variant, the tubular sheath 20 is formed on the basis of a high performance polymer such as PEK (polyetherketone), PEEK (polyetheretherketone), PEEKK (polyetheretherketone ketone), PEKK (polyetherketone ketone), PEKEKK (polyether ketoneetheroneketone) PAI (polyamide-imide), PEI (polyether-imide), PSU (polysulfone), PPSU (polyphenylsulfone), PES (polyethersulfone), PAS (polyarylsulfone), PPE (polyphenylene ether), PPS (polysulfide phenylene) LCP (liquid crystal polymers), PPA (polyphthalamide) and / or mixtures thereof or alternatively as a mixture with PTFE (polytetrafluoroethylene) or PFPE (perfluoropolyether).
    The thickness of the pressure sheath 20 is for example between 5 mm and 20 mm.
    The carcass 26, when present, is formed for example of a profiled metal strip, wound in a spiral. The turns of the strip are advantageously stapled to each other, which makes it possible to take up the radial crushing forces.
    In this example, the carcass 26 is disposed inside the pressure sheath 20. The flexible pipe 10 is then designated by the English term "rough bore" because of the geometry of the carcass 26
    Alternatively (not shown), the flexible pipe 10 is devoid of internal carcass 26, it is then designated by the English term "smooth bore".
    The helical winding of the profiled metal strip forming the carcass 26 is short-pitched, that is to say it has an absolute helix angle close to 90 °, typically between 75 ° and 90 °.
    In this example, the pressure vault 28 is intended to take up the radial forces linked to the pressure prevailing inside the pressure sheath 20. It is for example formed from a metallic profiled wire wound helically around the sheath 20. The profiled wire generally has a complex geometry, in particular in the form of a Z, a T, a U, a K, an X or an I, which makes it possible to staple together the turns of the pressure vault 28. L stapling of the turns of the pressure vault 28 makes it possible to control the spacings between adjacent turns in order in particular to avoid the creep of the pressure sheath 20. through the pressure vault 28 under the effect of the pressure prevailing at the inside the pipe 10.
    The pressure vault 28 is wound in a short pitch helix around the pressure sheath 20, that is to say with an absolute helix angle close to 90 °, typically between 75 ° and 90 °.
    Optionally, a hoop not shown in FIG. 1 surrounds the pressure vault 28. The hoop is also intended to take up the radial forces linked to the pressure, in addition to the pressure vault 28. The hoop is for example formed from a metallic wire of substantially rectangular section wound in a short pitch helix around the pressure vault sheath 28. The turns of the hoop are not stapled together. The flexible pipe 10 according to the invention comprises at least one layer of armor
    24, 25 formed of a helical winding of at least one elongated armor element 29.
    In the example shown in FIG. 1, the flexible pipe 10 comprises a plurality of layers of armor 24, 25, in particular a first layer of internal armor 24, applied to the pressure vault 28 (or to the sheath 20 when the vault 28 is absent) and a second outer layer of armor 25 around which the outer sheath 30 is arranged.
    Each layer of armor 24, 25 has longitudinal armor elements 29 wound in a long pitch around the axis A-A ’of the pipe.
    By "coiled in long pitch", it is meant that the absolute value of the helix angle is less than 60 °, and is typically between 25 ° and 55 °.
    The armor elements 29 of a first layer 24 are wound generally at an opposite angle with respect to the armor elements 29 of a second layer
    25. Thus, if the winding angle of the armor elements 29 of the first layer 24 is equal to + α, a being between 25 ° and 55 °, the angle of winding of the armor elements 29 of the second armor layer 25 arranged in contact with the first armor layer 24 is for example from - a, with a between 25 ° and 55 °.
    The armor elements 29 are for example formed by metallic wires, or by composite ribbons, in particular composite ribbons reinforced with carbon fibers.
    As will be seen below, the armor elements 29 each have an end section 32 introduced into the end piece 14. The end section 32 extends to a free end 34 disposed in the end piece 14 It advantageously has a helical or pseudo-helical trajectory of axis AA ′ in the end piece 14.
    In the example shown in the figures, each end section 32 progressively moves away from the axis AA ′ from a detachment point 35 at the rear of the free end 34 towards the free end 34, without approaching the axis A-A 'and without turning back.
    The free end 34 is then the most forward point of the end section 32.
    The end sections 32 of the armor elements 29 then define a substantially frustoconical envelope which corresponds to their natural development when they are released from the sheath 20.
    In this example, the flexible pipe 10 comprises anti-wear layers 36 interposed on the one hand between the pressure vault 28 and the first internal armor layer 24, and on the other hand between the two armor layers 24, 25.
    The anti-wear layers 36 are shown only in FIG. 2. Each anti-wear layer 36 is formed by helically winding a polymeric strip of thickness typically between 2 mm and 4 mm. Each anti-wear layer 36 has the function of reducing wear and friction between the metal wires or the composite ribbons between which it is interposed.
    The outer sheath 30 is intended to prevent permeation of fluid from the outside of the flexible pipe to the inside. It is advantageously made of polymer material, in particular based on a polyolefin, such as polyethylene, based on a polyamide, such as PA11 or PA12, or based on a fluorinated polymer such as polyvinylidene fluoride. (PVDF).
    Alternatively, the outer sheath 30 is formed from a high performance polymer such as PEK (polyetherketone), PEEK (polyetheretherketone), PEEKK (polyetheretherketone), PEKK (polyetherketone), PEKEKK (polyetheroneketone) PAI (polyamide-imide), PEI (polyether-imide), PSU (polysulfone), PPSU (polyphenylsulfone), PES (polyethersulfone), PAS (polyarylsulfone), PPE (polyphenylene ether), PPS (polysulfide phenylene) LCP (liquid crystal polymers), PPA (polyphthalamide) and / or mixtures thereof or in admixture with PTFE (polytetrafluoroethylene) or PFPE (perfluoropolyether).
    The thickness of the outer sheath 30 is for example between 5 mm and 15 mm.
    As illustrated in FIG. 2, each end piece 14 has an end vault 50 and an external connecting cover 51 projecting axially towards the rear from the roof 50. The cover 51 delimits, with the end vault 50 , a chamber 52 for receiving the end sections 32 of the armor elements 29.
    The end piece 14 further comprises a front sealing assembly 54 around the pressure sheath 20, and a rear sealing assembly 56 around the outer sheath 30.
    The end piece 14 further comprises a set 58 for fixing the layers of armor 24, 25 in the chamber 52.
    In this example, the end vault 50 is intended to connect the pipe 10 to another connection end piece 14 or to terminal equipment, advantageously by means of an end flange (not shown).
    The arch 50 has a central bore 62 intended to receive the end of the first sheath 20 and to allow the flow of the fluid flowing through the central passage 16 towards the outside of the pipe 10.
    In the example of FIG. 2, the end vault 50 internally defines a rear face 64 delimiting a converging surface 66 of support for a crimping ring.
    The cover 51 includes a tubular peripheral wall 70 extending around the axis AA ′. The peripheral wall 70 has a front edge 72 fixed on the end arch 50, radially away from the layers of armor 24, 25 and a rear edge 74 extending axially rearward beyond the arch end 50.
    The cover 51 delimits the chamber 52 radially outwards. The rear face 64 of the end vault 50 axially delimits the chamber 52 towards the front.
    The front sealing assembly 54 is advantageously located at the front of the end piece 14, in contact with the arch 50, being offset axially forwards with respect to the fixing assembly 58, with respect to the ends free 34 of the end sections 32 and relative to the rear sealing assembly 56.
    It comprises a front crimping ring 76, intended to engage on the pressure sheath 20, and a front clamping flange 78 of the front crimping ring 76.
    In the example shown in FIG. 2, in which the pipe 10 includes a pressure vault 28, the front assembly 54 further comprises an intermediate ring 80 for stopping the pressure vault 28.
    The crimping ring 76 is wedged on the converging surface 66 and is compressed by the clamping flange 78 to crimp the sheath 20.
    The rear sealing assembly 56 is disposed at the rear of the fixing assembly 58. It comprises a rear crimping ring 82, a rear clamping flange 84, and advantageously, an intermediate support cannula 86 interposed between the outer sheath 30 and the armor layers 24, 25.
    The rear crimping ring 82 is interposed between a rear surface of the cover 51 and the outer sheath 30.
    The rear clamping flange 84 is fixed to the rear edge 74 of the cover 51. It pushes the rear crimping ring 82 forwards to compress it and crimp the external sheath 30.
    The outer sheath 30 is supported on the intermediate cannula 86. It is wedged axially at the rear of the fixing assembly 58.
    The fastening assembly 58 comprises, in the chamber 52, an inner ring 90 on which the first end sections 32 of the first armor layer 24 are supported externally, an intermediate ring 92, interposed between the first sections d end 32 of the first layer of armor 24 and the second end sections 32 of the second layer of armor 25 and an outer ring 94 arranged in external support on the second end sections 32 of the second layer of armor 25.
    In this example, the fixing assembly 58 further comprises a solid filling material, such as a thermosetting polymeric resin of the epoxy or araldite type. The solid filling material is placed in the chamber 52 around the end sections 32 and the rings 90, 92, 94.
    The inner ring 90 is disposed in abutment on an outer bearing surface 96 delimited here on the pressure vault 28 or on the hoop when it is present.
    In addition, according to variants not shown, the inner ring 90 could also be disposed in abutment on the outer face of an anti-wear layer 36 disposed around the pressure vault 28 or around the hoop when it is present.
    In addition, according to another variant not shown, the inner ring 90 could also be placed in abutment on the outer face of the pressure sheath 20, when the pipe 10 has no pressure vault.
    In this variant without pressure vault, the layers of armor 24, 25 are advantageously crossed and wound with helical angles of absolute value substantially equal to 55 °, this particular leir angle conferring good resistance to radial and axial forces.
    The inner ring 90 here has a substantially tubular shape, with an inner peripheral surface 98 cylindrical with axis A-A 'and an outer peripheral surface 100 substantially frustoconical with axis A-A'. The outer peripheral surface 100 diverges away from the axis A-A ’in the direction from the back to the front.
    The half angle at the top of the truncated cone formed by the outer peripheral surface 100 of the inner ring 90 is advantageously less than 20 °, preferably between 3 ° and 15 °. According to a variant not shown, the outer peripheral surface 100 of the inner ring 90 is cylindrical with axis A-A ’
    The inner peripheral surface 98 is applied to the bearing surface 96. The end sections 32 of the armor elements 29 of the first armor layer 24 are applied to the outer peripheral surface 100, in the vicinity of the free ends 34 .
    The inner ring 90 is for example made of metallic material, advantageously of steel, preferably of mild steel.
    When the first layer of armor 24 is made of steel, the inner ring 90 is preferably made with a less hard steel than that constituting the first layer of armor 24, in particular so as not to damage the first layer of armor 24 during of its tightening against the inner ring 90 at the outer peripheral surface 100.
    According to other variants, the inner ring 90 is made of composite material or of polymer material, advantageously of high performance polymer, for example of PEEK, PEI, PAI or PPSU.
    With reference to FIGS. 3 and 4, the intermediate ring 92 comprises an annular body 110 of revolution around the axis A-A ', extending along the axis A-A' between a rear edge 112 and an edge before 114.
    It defines, between the rear edge 112 and the front edge 114, an inner peripheral surface 116 and an outer peripheral surface 118.
    The length of the annular body 110, taken along the axis A-A ’between the rear edge 112 and the front edge 114 is advantageously less than the maximum internal diameter of the annular body 110.
    In this example, the intermediate ring 92 has before its mounting in the end piece 14 an inner peripheral surface 116 of substantially cylindrical geometry with axis A-A ’. Referring to Figure 2, during assembly of the end piece 14, the inner peripheral surface of the intermediate ring is applied to the end sections 32 of the armor elements 29 of the first armor layer 24. The ring intermediate 92 is then deformed so that the inner peripheral surface 116 follows the shape of the outer face of the first layer of armor 24, a shape which itself depends on the geometry of the outer peripheral surface of the inner ring 90 on which supports the first layer of armor 24.
    After mounting the end piece 14, the inner peripheral surface 116 of the intermediate ring 92 extends opposite the outer peripheral surface 100 of the inner ring 90. In this example, the inner peripheral surface 116 of the intermediate ring 92 after its mounting in the end piece is a truncated cone diverging from the axis A-A 'in the direction from the rear to the front.
    Thus, the end sections 32 of the armor elements 29 of the first armor layer 24 are pinched between the inner ring 90 and the intermediate ring 92.
    According to another variant not shown, the inner peripheral surface 116 of the intermediate ring 92 is before its assembly of the end piece a trunk cone of cone diverging away from the axis AA 'in the direction from the back to front.
    The outer peripheral surface 118 of the intermediate ring 92 is substantially frustoconical with axis A-A ’. It diverges away from axis A-A ’in the direction from back to front.
    The end sections 32 of the armor elements 29 of the second armor layer 25 are applied to the outer peripheral surface 118.
    According to the invention, the intermediate ring 92 is at least partially split. In this example, the intermediate ring has at least one partial slot 120, preferably a plurality of partial slots 120 formed through the annular body 110.
    Each partial slot 120 thus extends between an edge 112, 114 of the annular body 110, into which it opens, and a bottom 122 located away from the edges 112, 114.
    In the example shown in Figures 3 and 4, the slot 120 opens into the front edge 114 and is blind at its other end.
    It opens radially through each of the peripheral surfaces 116, 118.
    The partial slots 120 are angularly distributed around the axis A-A ’, being angularly separated from each other. The number of slots 120 is advantageously between 1 and 20, in particular between 4 and 16 With reference to FIG. 5, in at least one half median longitudinal section passing through the center of the slot 120 and through the axis AA ′ , the area occupied by the slot 120 is greater than 50% of the total area of the longitudinal half-section.
    The width of each slot 120, taken circumferentially around the axis A-A ’is less than the length of the slot 120, taken longitudinally along the axis A-A’.
    The slots 120 delimit between them in the body 110, up to the front edge 114, flaps 124 radially deformable between a rest configuration and a configuration radially contracted towards the axis A-A ’.
    The intermediate ring 92 is made for example of metal, advantageously of steel, preferably of mild steel.
    When the first and second layers of armor 24, 25 are made of steel, the intermediate ring 92 is preferably made with a steel less hard than that constituting these two layers of armor 24, 25, in particular so as not to damage these two armor layers 24, 25 when mounting the intermediate ring 92 and when tightening the armor layers 24, 25 against the intermediate ring 92 against the surfaces 116, 118.
    According to other variants, the intermediate ring 92 is made of composite material or of polymer material, advantageously of high performance polymer, for example of PEEK, PEI, PAI or PPSU. .It is formed in one piece by coming from material.
    The outer ring 94 is mounted to bear on the end sections 32 of the armor elements 29 of the second layer of armor 25.
    The outer ring 94 has a frustoconical inner peripheral surface 130 and a cylindrical outer peripheral surface 132.
    The inner peripheral surface 130 is applied to the end sections 32 of the armor elements 29 of the second armor layer 25.
    Thus, the end sections 32 of the armor elements 29 of the second armor layer 25 are pinched between the intermediate ring 92 and the outer ring 94.
    The outer ring 94 is for example made of metal, advantageously of steel, preferably of mild steel.
    When the second armor layer 25 is made of steel, the outer ring 94 is preferably made with a less hard steel than that constituting the second armor layer 25, in particular so as not to damage the second armor layer 25 during of its tightening against the outer ring 94 at the inner peripheral surface 130.
    According to other variants, the outer ring 94 is made of composite material or of polymer material, advantageously of high performance polymer, for example of PEEK, PEI, PAI or PPSU.
    The outer ring 94 is preferably crimped to radially compress the end sections 32 of the armor elements 29 of the second armor layer 25, the intermediate ring 92, and the end sections 32 of the armor elements 29 of the first layer of armor 24.
    To mount the end piece 14 after the intermediate section 12 of the pipe 10 has been manufactured, the cover 51 and the rear sealing assembly 56 are engaged around the outer sheath 30. The outer sheath 30 is then stripped at its end to reveal the end sections 32 of the armor elements 29 of each armor layer 24, 25.
    The outer ring 94 is then engaged around the end sections 32 of the armor elements 29 of the second armor layer 25.
    The end sections 32 then deploy radially away from each other in a natural manner, without it being necessary to significantly deform the end sections 32, or to fold them back.
    Then, the intermediate ring 92 is introduced between the free ends 34 of the armor elements 29 of the armor layers 24, 25.
    Then, the inner ring 90 is inserted between the pressure vault 28 and armor elements 29 of the first layer of armor 24. Then, as illustrated in FIG. 6, the outer ring 94 is brought opposite the ring intermediate 92 and the inner ring 90.
    A radial crimping force is then applied to the outer ring 94 to crimp on the one hand the end sections 32 of the armor elements 29 of the second armor layer 25 between the outer ring 94 and the intermediate ring 92, and on the other hand, by radial deformation of the intermediate ring 92, to crimp the end sections 32 of the armor elements 29 of the first armor layer 24 between the intermediate ring 92 and the inner ring 90.
    The radial force is generated for example by a radial crimping machine of the type sold by the company FINN-POWER.
    Then, conventionally, the front sealing assembly 54 and the end vault 50 are mounted. The cover 51 is then moved towards the vault 50 and is fixed to it to close the chamber 52.
    Advantageously, filling material capable of solidifying is then introduced in fluid form into the chamber 52 to drown the rings 90, 92, 94 and the end sections 32 of the armor elements 29. The filling material solidifies to immobilizing the end sections 32 of the armor elements 29 by means of the rings 90, 92, 94.
    According to the invention, the presence of an at least partially split intermediate ring 92 ensures its radial compressibility and the good transmission of the radial tightening forces during assembly and after it.
    In particular, the tightening of the outer ring 94 is transmitted radially inwards and activates the simultaneous tightening of the end sections 32 of the two layers of armor 24, 25. The first layer of armor 24 and the second layer d armor 25 communicates mechanically via the intermediate ring 92. Each of these layers 24, 25 is anchored securely, using a self-activating wedge effect.
    The contact pressures which are applied to the end sections 32 are also more uniform, since they are easily distributed during mounting and crimping of the outer ring 94 thanks to the radial flexibility of the intermediate ring 92.
    The clamping forces required for crimping during assembly are also reduced.
    The particular shape of the rings 90, 92, 94, and in particular the shape of the outer peripheral surface 118 and the inner peripheral surface 116 of the intermediate ring 92, limits the deformation of the armor elements 29 and eliminates the need for them. fold back significantly.
    The armor elements 29 remain organized during assembly, which creates fewer mounting holes. The clamping stroke is further reduced.
    In a variant illustrated in FIG. 7, the crimping force is applied axially and generates a radial component by wedge effect during the cooperation between the conical inner peripheral surface 130 of the outer ring 94, the end sections 32 of the elements of armor 29 of the second layer of armor 25 and the outer peripheral surface 118 of the intermediate ring 92.
    In another variant, the intermediate ring 92 is made of a radially deformable material.
    In the variant illustrated in FIG. 8, the cover 51 defines at least one transverse stop 140 directed towards the front, formed for example by an annular shoulder disposed opposite the rear face 64 of the end vault 50.
    The outer ring 94 is mounted in abutment at the rear against the transverse abutment 140. This ensures additional locking of the armor elements 29 by mechanical cooperation.
    In another variant illustrated in FIG. 9, the end piece 14 does not have an inner ring 90.
    The front flange 78 is provided with a cylindrical rear extension 150, defining the cylindrical bearing surface 96. Alternatively, the external face of the rear extension 150 is a truncated cone and the bearing surface 96 diverges away from the axis A-A ’in the direction from the rear to the front.
    The end sections 32 of the armor elements 29 of the first armor layer 24 are then pinched between the rear extension 150 of the front flange 78 and the intermediate ring 92.
    In the variant illustrated in FIG. 10, the slot 120 passes through the annular body 110 of the intermediate ring 92 over its entire height. It stretches along a generator. It opens both into the rear edge 112 and into the front edge 114.
    In this example, the intermediate ring 92 remains formed in one piece by coming in one piece.
    In other variants (not shown), at least one slot 120 is a partial slot and another slot 120 is a through slot, and / or at least one partial slot 120 opens into the front edge 114, at least one other partial slit 120 opening into the rear edge 112.
    权利要求:
    Claims (15)
    [1" id="c-fr-0001]
    1. - end piece (14) for connecting a flexible pipe (10) for transporting fluid, the flexible pipe (10) comprising at least one pressure sheath (20) and a plurality of layers (24, 25) of tensile armors arranged externally relative to the pressure sheath (20), the end piece (14) comprising:
    - an end vault (50) extending along a central axis (A-Aj;
    - An outer cover (51) fixed on the end vault (50) and delimiting with the end vault (50), a receiving chamber (52) of an end section (32) of the elements armor (29);
    - First end sections (32) of the armor elements (29) of a first armor layer (24) and second end sections (32) of the armor elements (29) of a second layer of armor (25), arranged externally relative to the first end sections (32);
    - an outer ring (94) applied externally to the second end sections (32);
    - An intermediate ring (92), interposed between the first end sections (32) and the second end sections (32), in contact with the first end sections (32) and with the second end sections (32), the intermediate ring (92) extending around the central axis (A-Aj between a rear edge (112) and a front edge (114), the second end sections (32) being pinched between the outer ring (94) and the intermediate ring (92), the first end sections (32) being pinched between the intermediate ring (92) and a bearing surface (96);
    characterized in that the intermediate ring (92) is at least partially split.
    [2" id="c-fr-0002]
    2. - end piece (14) according to claim 1, wherein the intermediate ring (92) is made in one piece.
    [3" id="c-fr-0003]
    3. - end-piece (14) according to claim 1 or 2, in which the intermediate ring (92) has at least one partial slot (120) opening into one of the front edge (114) and the rear edge (112), without opening into the other from the front edge (114) and the rear edge (112).
    [4" id="c-fr-0004]
    4. - end-piece (14) according to claim 3, in which, in at least one median longitudinal half-section of the intermediate ring (92) passing through the slot (120), the area occupied by the slot (120) is greater than 50% of the total area of the median longitudinal half-section of the intermediate ring (92).
    [5" id="c-fr-0005]
    5. - End piece (14) according to any one of claims 3 to 4, in which the intermediate ring (92) has a plurality of partial slots (120) distributed angularly around the central axis (A-Aj.
    [6" id="c-fr-0006]
    6. - End piece (14) according to any one of claims 3 to 5, wherein the or each slot (120) partial opens into the front edge (114).
    [7" id="c-fr-0007]
    7. - End piece (14) according to any one of the preceding claims, in which the intermediate ring (92) has at least one slot (120) passing longitudinally through the intermediate ring (92), the slot (120) opening into the edge. front (114) and in the rear edge (112) of the ring.
    [8" id="c-fr-0008]
    8. - End piece (14) according to any one of the preceding claims, in which the intermediate ring (92) has an outer peripheral surface (118) frustoconical, on which the second end sections (32) and a inner peripheral surface (116) cylindrical or frustoconical on which the first end sections (32) rest.
    [9" id="c-fr-0009]
    9. - end piece (14) according to claim 8, wherein the intermediate ring (92) has at least one slot (120) opening radially into the outer peripheral surface (118) and into the inner peripheral surface (116).
    [10" id="c-fr-0010]
    10. - End piece (14) according to any one of the preceding claims, comprising an inner ring (90) defining the bearing surface (96).
    [11" id="c-fr-0011]
    11. - end piece (14) according to any one of claims 1 to 9, comprising an annular flange (78) fixed on the end vault (50), the annular flange (78) defining the bearing surface (96 ).
    [12" id="c-fr-0012]
    12. - End piece (14) according to any one of the preceding claims, in which the outer cover (51) defines internally in the receiving chamber (52) a front transverse stop (140), the outer ring (94) being wedged on the front transverse stop (140).
    [13" id="c-fr-0013]
    13. - Flexible pipe (10) comprising at least one pressure sheath (20), a plurality of layers (24, 25) of tensile armor disposed externally relative to the pressure sheath (20), and at least one connecting end piece (14) according to any one of the preceding claims.
    [14" id="c-fr-0014]
    14. - Method for assembling a nozzle (14) of a flexible pipe (10), the flexible pipe (10) comprising comprising at least one pressure sheath (20) and a plurality of layers (24, 25) tensile armor disposed externally relative to the pressure sheath (20), the method comprising the following steps:
    - provision of an outer ring (94) on second end sections (32) of a second layer of armor (25);
    - insertion of an intermediate ring (92) at least partially split between first end sections (32) of a first layer of armor (24) and the second end sections (32) of the second layer d '' armor (25) located externally relative to the first end sections (32), the intermediate ring
    5 (92) being in contact with the first end sections (32) and with the second end sections (32);
    - arrangement of the first end sections (32) of the first layer of armor (24) on a bearing surface (96);
    - pinching of the second end sections (32) between the outer ring
    10 (94) and the intermediate ring (92), and pinching of the first end sections (32) between the intermediate ring (92) and the bearing surface (96) under the effect of the radial deformation of the ring intermediate (92).
    [15" id="c-fr-0015]
    15. - Method according to claim 14, wherein the pinching of the second end sections (32) and the first end sections (32) is carried out by 15 radial or axial crimping of the outer ring (94).
    1/4
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    同族专利:
    公开号 | 公开日
    BR112020010633A2|2020-11-10|
    DK3717817T3|2022-01-24|
    WO2019105926A1|2019-06-06|
    FR3074251B1|2019-12-20|
    EP3717817A1|2020-10-07|
    EP3717817B1|2021-12-08|
    引用文献:
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    US3874064A|1972-11-21|1975-04-01|Inst Francais Du Petrole|Process for securing a rigid coupling to one end of an armored flexible pipe|
    FR2561745A1|1984-03-20|1985-09-27|Furukawa Electric Co Ltd|FLEXIBLE HOSE FOR THE DELIVERY OF VARIOUS FLUIDS SUCH AS OIL, GASES, WATER, ETC.|
    JPH04171390A|1990-11-01|1992-06-18|Furukawa Electric Co Ltd:The|Terminal metal fitting for fluid transporting pipe|
    EP1867905A1|2006-06-16|2007-12-19|Wellstream International Limited|Radius control|
    FR3000170A1|2012-12-21|2014-06-27|Technip France|CONNECTING TIP FOR A FLEXIBLE FLUID TRANSPORT DUCT AND ASSOCIATED METHOD|WO2021084240A1|2019-10-30|2021-05-06|Baker Hughes Energy Technology UK Limited|Wire securement|
    US11112035B2|2019-03-28|2021-09-07|Trinity Bay Equipment Holdings, LLC|System and method for securing fittings to flexible pipe|
    US11148904B2|2019-12-19|2021-10-19|Trinity Bay Equipment Holdings, LLC|Expandable coil deployment system for drum assembly and method of using same|
    US11204114B2|2019-11-22|2021-12-21|Trinity Bay Equipment Holdings, LLC|Reusable pipe fitting systems and methods|
    US11208257B2|2016-06-29|2021-12-28|Trinity Bay Equipment Holdings, LLC|Pipe coil skid with side rails and method of use|
    US11231145B2|2015-11-02|2022-01-25|Trinity Bay Equipment Holdings, LLC|Real time integrity monitoring of on-shore pipes|
    US11231134B2|2014-09-30|2022-01-25|Trinity Bay Equipment Holdings, LLC|Connector for pipes|
    US11242948B2|2019-11-22|2022-02-08|Trinity Bay Equipment Holdings, LLC|Potted pipe fitting systems and methods|FR3014165B1|2013-12-03|2015-11-13|IFP Energies Nouvelles|FLEXIBLE DRIVING CONNECTION TIP WITH ANCHORING OF ENHANCED ARMOR YARNS|
    法律状态:
    2018-11-27| PLFP| Fee payment|Year of fee payment: 2 |
    2019-05-31| PLSC| Publication of the preliminary search report|Effective date: 20190531 |
    2019-11-25| PLFP| Fee payment|Year of fee payment: 3 |
    2020-11-27| PLFP| Fee payment|Year of fee payment: 4 |
    2021-11-30| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1761380A|FR3074251B1|2017-11-29|2017-11-29|CONNECTING END PIECE OF A FLEXIBLE FLUID TRANSPORT PIPE, PIPE AND ASSOCIATED METHOD|
    FR1761380|2017-11-29|FR1761380A| FR3074251B1|2017-11-29|2017-11-29|CONNECTING END PIECE OF A FLEXIBLE FLUID TRANSPORT PIPE, PIPE AND ASSOCIATED METHOD|
    BR112020010633-0A| BR112020010633A2|2017-11-29|2018-11-27|flexible pipe connection end fitting for fluid transport, flexible pipe and method for mounting a flexible pipe end fitting|
    PCT/EP2018/082688| WO2019105926A1|2017-11-29|2018-11-27|Connection end-piece for a flexible pipe for transporting fluid, associated pipe and method|
    DK18804659.3T| DK3717817T3|2017-11-29|2018-11-27|Connection end piece for a flexible pipe for transporting liquid, associated pipes and method|
    EP18804659.3A| EP3717817B1|2017-11-29|2018-11-27|Connection end-piece for a flexible pipe for transporting fluid, associated pipe and method|
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