Machine for forming tubular reinforcements of ducts and relative method
阅读说明:本技术 用于形成管道的管状加强件的机器和相关方法 (Machine for forming tubular reinforcements of ducts and relative method ) 是由 R·P·斯蒂坎 O·S·艾尔维斯 L·G·珀勒斯 于 2018-12-19 设计创作,主要内容包括:一种机器(100),所述机器包括:﹣第一进给器(112),其能够解绕第一带材(31);﹣成型机设备(110),其包括上游成型台(122A-122G),上游成型台能够使第一带材(31)成型以形成预成型的第一带材(31);﹣第二进给器(114),其能够解绕第二带材(48),所述第二带材(48)是扁平带材;所述成型机设备(110)包括:﹣中间连结台(124),其能够从第二进给器(114)接收作为扁平带材的第二带材(48)并且能够连结预形成的第一带材(31)和扁平的第二带材(48);和﹣至少下游成型台(126A至126C),其构造为使得从所述中间连结台(124)接收的第一带材(31)和第二带材(48)共同成型并且形成组合的成型条(196)。(A machine (100), comprising: -a first feeder (112) able to unwind a first strip (31); -a former device (110) comprising an upstream forming station (122A-122G) capable of forming a first strip (31) to form a pre-formed first strip (31); -a second feeder (114) capable of unwinding a second strip (48), said second strip (48) being a flat strip; the molding machine apparatus (110) includes: -an intermediate joining station (124) able to receive the second strip (48) as a flat strip from the second feeder (114) and to join the first pre-formed strip (31) and the flat second strip (48); and-at least a downstream forming station (126A to 126C) configured to jointly form the first and second strips (31, 48) received from the intermediate joining station (124) and to form a combined forming strip (196).)
1. A machine (100) for forming a tubular reinforcement (29) of a duct (10), comprising:
-a first feeder (112) able to unwind a first strip (31);
-a forming machine apparatus (110) comprising at least an upstream forming station (122A-122G) able to receive said first tape (31) from said first feeder (112) and able to form said first tape (31) to form a pre-formed first tape (31);
-a second feeder (114) capable of unwinding a second strip (48), said second strip (48) being a flat strip;
characterized in that the former device (110) comprises:
-an intermediate joining station (124) able to receive the second strip (48) as a flat strip from the second feeder (114) and to join the first and second pre-formed strips (31, 48); and
-at least a downstream forming station (126A-126C) configured to co-form and form a combined forming strip (196) the first and second strip materials (31, 48) received from the intermediate joining station (124).
2. The machine (100) according to claim 1, wherein the intermediate joining station (124) comprises at least a redirecting first roller (130) for redirecting the second strip (48) from the second feeder (114) to at least one of the downstream forming stations (126A-126C), the second strip (48) remaining as a flat strip, the intermediate joining station (124) comprising a second roller (132) for supporting the pre-shaped first strip (31).
3. The machine (100) of any of claims 1 to 2, wherein each forming station (122A-122G; 126A-126C) has at least two opposing rollers (130, 132) defining a forming gap (134) therebetween.
4. Machine (100) according to claim 3, wherein at least a downstream forming station (126A-126C) has a forming interspace (134) comprising at least a zone (168) for jointly deforming the first strip (31) and the second strip (48) and at least a zone (170) for deforming only the first strip (31) and not the second strip (48).
5. Machine (100) according to claim 4, wherein the forming interspace (134) of the at least downstream forming station (126A-126C) comprises at least a zone (172) for maintaining the shape of a zone of the second strip (48).
6. Machine (100) according to claim 5, wherein a cross section of said area (172) for shape retention, in a plane (P) containing the rotation axes of said opposite rollers (130, 132), is delimited by opposite flat zones, said second strip (48) being kept flat in said area (172) for shape retention.
7. Machine (100) according to any one of claims 3 to 6, wherein at least one of said opposite rollers (130; 132) defines a lateral deformation surface for bending an edge of said first strip (31).
8. Machine (100) according to any one of the preceding claims, wherein said second feeder (114) comprises: a second strip unwinder (184) onto which the second flat strip (48) is wound; at least one second strip guide roller (186A-186C) for orienting the second strip (48) paid out from the second strip unwinder (184) toward the intermediate joining station (124).
9. Machine according to claim 8, wherein the second feeder (114) comprises a brake (187) advantageously interposed between the second tape unwinder (184) and the intermediate joining station (124) in order to control the feeding speed of the second tape (48) in the intermediate joining station (124).
10. The machine (100) according to any one of claims 8 or 9, wherein the second feeder (114) comprises a pair of opposite registration rollers (188) to guide the second strip (48) to the intermediate joining station (124) in a predetermined feeding direction (G-G').
11. Machine (100) according to any one of the preceding claims, comprising a winding device able to wind the combined profiled strip (196) helically on a cylindrical outer surface (104) to form the tubular reinforcement (29).
12. Machine (100) according to claim 11, wherein the winding apparatus comprises a rotary support (106) mounted so as to be rotatable about a winding axis (E-E') defined by the cylindrical outer surface (104), the rotary table carrying the first feeder (112), the second feeder (114) and the molding machine apparatus (110).
13. A method for forming a tubular reinforcement (29) for a pipeline (10), the method comprising the steps of:
-unwinding a first tape (31) from a first feeder (112);
-feeding said first strip (31) from said first feeder (112) to at least an upstream forming station (122A-122G) of a forming machine apparatus (110) so as to form a pre-formed first strip (31);
-unwinding a second strip (48) from a second feeder (114), said second strip (48) being a flat strip;
the method is characterized in that:
-feeding the second strip (48) as flat strip from the second feeder (114) into an intermediate joining station (124) of the forming machine apparatus (110) and joining the first and second pre-formed strips (31, 48) in the intermediate joining station (124);
-co-forming said first strip material (31) and said second strip material (48) received from said intermediate joining station (124) in at least a downstream forming station (126A-126C) so as to form a combined forming strip (196).
14. The method of claim 13, wherein each forming station (122A-122G; 126A-126C) has at least two opposing rollers (130, 132) defining a forming gap (134) therebetween,
co-forming the first strip (31) and the second strip (48) in at least a downstream forming station (126A-126C) comprises co-deforming the first strip (31) and the second strip (48) in at least one region (168) for co-deforming in the void (134), and deforming only the first strip (31) and not the second strip (48) in at least one region (170) for deforming only the first strip (31) in the void (134).
15. The method of any of claims 13 or 14, comprising helically winding the combined profiled strip (196) around a cylindrical outer surface (104) to form the tubular reinforcement (29).
Technical Field
The invention relates to a machine for forming a tubular reinforcement for a duct, comprising:
-a first feeder capable of unwinding a first strip;
-a forming machine apparatus comprising at least an upstream forming station capable of receiving a first strip from a first feeder and forming the first strip to form a pre-formed first strip;
-a second feeder capable of unwinding a second strip, said second strip being a flat strip.
The pipe is preferably a flexible pipe of the non-bonded type intended for transporting hydrocarbons through a body of water such as an ocean, sea, lake or river.
Background
Such flexible pipes are manufactured, for example, according to the standards API 17J (specification for unbonded flexible pipes, fourth edition, 5 months 2014) and API RP 17B (recommended practice technology for flexible pipes, fifth edition, 3 months 2014) established by the american petroleum institute.
The conduit is typically formed from an assembly of concentric and stacked layers. A pipe is considered "unbonded" if at least one layer of the pipe is able to move longitudinally relative to an adjacent layer when the pipe is flexed. In particular, a non-bonded pipe is a pipe that does not have any bonding material connecting the layers forming the pipe.
The pipeline is typically positioned through the body of water between a bottom assembly intended to collect the fluid produced at the bottom of the body of water and a floating or fixed surface assembly intended to collect and distribute the fluid. The surface assembly may be a semi-submersible platform, FPSO or other floating or fixed assembly.
In some cases, the flexible pipe includes an inner carcass layer (carcas) positioned within the pressure jacket. The carcass layer prevents collapse contraction of the pressure jacket under external pressure, such as when the internal passage is depressurized for circulation of a fluid defined by the pressure jacket.
The inner carcass layer is typically formed from a profiled metal strip which is wound into a spiral shape. The turns of the strip interlock with each other. The turns define between them a helical gap which opens radially inwards into the central channel for circulation of the fluid.
Thus, the inner surface of the carcass layer has a series of depressions and elevations in the axial direction. The pipe is then generally referred to as a "rough pipe".
In some cases, the circulation of the fluid along the carcass layer is disturbed by the raised/recessed portions defined on the carcass layer by the helical gaps.
Such flow disturbances are sometimes considered to be the cause of vibration phenomena in the flexible pipe, and even the cause of pulsations caused by the circulation of the fluid when resonance occurs ("flow-induced pulsations" or "ringing").
To overcome this problem, it is known to manufacture flexible pipe without an inner carcass layer. These pipes have smooth surfaces ("smooth pipes"), but are subject to collapse contraction under reduced pressure.
Another solution to this problem is disclosed in WO 2014/135906. In this document, the flexible pipe comprises a carcass layer, wherein the helical gaps present between the different turns of the carcass layer are closed by an S-shaped profiled strip and are inserted into the profiled interlocking strip.
Such a carcass layer is efficient in reducing flow-induced vibrations. However, it is rather complicated to manufacture.
In fact, two different forming machines are required to form the first strip forming the interlocking carcass layers on the one hand and the strip forming the S-shaped inserts (which close the gaps of the interlocking carcass layers) on the other hand.
After each strip is shaped separately, a joining apparatus is used to form a joined shaped strip that is helically wound to form the tubular reinforcement.
Thus, the machines used to form the carcass layer are heavy and complex to use. In particular, the joining of the first profiled strip to the second profiled strip must be performed very precisely, which requires fine-tuning of the machine.
Disclosure of Invention
One purpose of the present invention is therefore to obtain a machine capable of forming a tubular reinforcement for a pipe in which the risk of vibrations and/or even pulsations occurring is limited, which is compact and easy to operate.
To this end, the subject of the invention is a machine as described above, characterized in that the molding-machine plant comprises:
-an intermediate joining station able to receive the second strip as a flat strip from the second feeder and able to join the first and second pre-formed strips; and
-at least a downstream forming station configured to co-form the first and second strip materials received from the intermediate joining station and form a combined forming strip.
The machine according to the invention may comprise one or more of the following features, taken alone or according to any technically feasible combination:
-the intermediate joining station comprises at least a redirected first roller for redirecting a second strip from the second feeder to at least one downstream forming station, said second strip remaining as a flat strip, the intermediate joining station comprising a second roller for supporting the pre-formed first strip;
-each forming station has at least two opposed rollers defining a forming gap therebetween;
-at least the downstream forming station has a forming void comprising: at least one region for co-deforming the first strip and the second strip; and at least one region for deforming only the first strip material and not the second strip material;
-the forming void of at least the downstream forming station comprises at least one area for maintaining the shape of the area of the second strip material;
-a cross-section of said area for shape retention, in a plane containing the axis of rotation of said opposed rollers, is delimited by opposed flat bands, the second strip material remaining flat in the area for shape retention;
-at least one of said opposed rollers defines a lateral deformation surface for bending an edge of the first tape;
-the second feeder comprises: a second tape unwinder around which a flat second tape is wound; at least one second tape guide roller for orienting a second tape paid out from the second tape unwinder toward the intermediate joining station;
-the second feeder comprises a brake, advantageously interposed between the second tape unwinder and the intermediate joining station, in order to control the feeding speed of the second tape in the intermediate joining station;
-the second feeder comprises a pair of opposite registration rollers for guiding the second strip to the intermediate joining station with a predetermined feeding direction;
-the machine comprises a winding device able to wind the combined shaped bars helically on the cylindrical outer surface to form the tubular reinforcement;
-the winding apparatus comprises a rotary support mounted so as to be rotatable about a winding axis defined by said cylindrical outer surface, the rotary table carrying said first feeder, said second feeder and said forming machine apparatus.
The invention also relates to a method for forming a tubular reinforcement for a pipe, comprising the steps of:
-unwinding a first strip from a first feeder;
-feeding a first strip from a first feeder to at least an upstream forming station of a forming machine apparatus so as to form a pre-formed first strip;
-unwinding a second strip from a second feeder, said second strip being a flat strip;
the method is characterized in that:
-feeding a second strip as a flat strip from a second feeder into an intermediate joining station of the forming machine apparatus and joining the pre-formed first strip and the flat second strip in the intermediate joining station;
-co-forming the first and second strips received from the intermediate joining station in at least a downstream forming station so as to form a combined forming strip.
The method according to the invention may comprise one or more of the following features, taken alone or according to any technically feasible combination:
-each forming station has at least two opposed rollers defining a forming gap therebetween,
co-forming the first and second strips in at least a downstream forming station comprises co-deforming the first and second strips in at least one region for co-deforming in the void, while deforming only the first strip and not the second strip in at least a region for deforming only the first strip in the void;
-the method comprises helically winding the combined shaped strip on the cylindrical outer surface to form the tubular reinforcement.
Drawings
The invention will be better understood on the basis of the following description, given by way of example only and with reference to the accompanying drawings, in which:
figure 1 is a perspective view, partly in section, of a central section of a first flexible pipe made using a method according to the invention;
figure 2 is a partial cross-sectional view, taken along the axial mid-plane of the detail of the pipe of figure 1, showing the carcass layer and the insert positioned in the gap of the carcass layer;
figure 3 is a detail view of the pipe of figure 2, showing a relaxed S-shaped cross-section of the insert;
figure 4 is a front schematic view of a first machine for forming the carcass layer of figure 2;
figures 5 to 7 are cross-sectional views of the forming rollers of the successive upstream forming station of the first strip in the machine of figure 3;
figure 8 is a view similar to figure 5 of an intermediate joining station of the machine of figure 3 for joining a first preformed strip with a second flat strip;
figures 9 to 10 are views, similar to figure 5, of the forming rollers of successive downstream bonding stations of the first and second strips in the machine of figure 3;
fig. 11 is a view similar to fig. 3, showing an alternative L-shaped cross-section of the insert.
Detailed Description
In the following, the terms "outer" and "inner" are generally understood radially with respect to the axis a-a ' of the conduit, the term "outer" being understood as radially further away from the axis a-a ', the term "inner" extending relatively and radially closer to the axis a-a ' of the conduit.
Fig. 1 partially shows a first flexible pipe 10.
Flexible pipe 10 includes a central segment 12. Which includes an end piece (not visible) at each axial end of the central section 12.
Referring to fig. 1, the pipe 10 defines a central passage 16 for circulation of a fluid, preferably a petroleum fluid. The central channel 16 extends along an axis a-a' between the upstream and downstream ends of the duct 10.
The diameter of the central channel is advantageously in the range 15cm to 60 cm.
The flexible pipe 10 is intended to be positioned through a body of water (not shown) in a facility for producing fluids, which are in particular hydrocarbons.
The water is for example a lake, sea or ocean. The depth of the body of water perpendicular to the surface facility is typically between 15m and 3000 m.
The surface facility is for example a surface base, a semi-submersible platform, a vertical buoy, an unloading buoy or a vessel such as an FPSO (floating production storage) or FLNG (floating liquefied natural gas).
Alternatively, the surface installation is a fixed rigid structure in the form of a hull or a swinging structure fixed under the sea surface, such as a TLP (tension leg platform).
Flexible pipe 10 is preferably a "non-bonded" pipe. At least two adjacent layers of flexible pipe 10 are free to move longitudinally relative to each other during flexing of pipe 10.
Advantageously, all layers of flexible pipe 10 are free to move relative to each other. Such pipes are described, for example, in the american petroleum institute established standardized documents API 17J (for the non-bonded flexible pipe specification, fourth edition, month 5 2014) and API RP 17B (recommended implementation technology for flexible pipes, fifth edition, month 3 2014).
As shown in fig. 1, the duct 10 defines, about the axis a-a', a plurality of concentric layers extending continuously along the central section 12 until the end members are located at the ends of the duct.
According to the invention, the pipe 10 comprises at least one first tubular sheath 20 based on a polymeric material, which advantageously constitutes a pressure sheath.
The pipe 10 further comprises at least one tensile armour layer 24, 25 positioned externally with respect to the first sheath 20 forming the pressure sheath.
The duct 10 further comprises: an
In accordance with the present invention, the duct 10 also includes an
The
In a known manner, the pressure jacket 20 is intended to tightly confine the fluid conveyed in the channel 16. The pressure jacket is formed of a polymeric 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).
The thickness of the pressure jacket 20 is for example between 5mm and 20 mm.
As shown in fig. 2, the
The thickness of the
The main function of the
The
The helical winding of the first profiled
The
The closed S-shaped cross section of each turn of the
The
The distance between the two legs of the U is typically twice the thickness of the
The angle of the inclined
The
The
The
The
The width and length of the
For each turn, the
The
Externally, the
Thus, the
The width of each turn of the
The
The
Thus, the
As shown in FIG. 3, the
The insert comprises an axially
The axially
According to the invention, the
The
The thickness e2 is, for example, between 0.5mm and 2mm, in particular between 0.8mm and 1.5 mm.
Such a thickness ensures sufficient rigidity while limiting the risk of disintegration when introducing the probe into the central channel 16 ("pigging" operation).
In the example shown in fig. 2 and 3, the
The
As shown in fig. 3, the
The
The
The
The
The
The
The
Preferably, when the
Width L1 of
The
The inner region protrudes from an
Referring to fig. 2, the
The
Thus, successive turns of the
The overlap width of each
With reference to fig. 1, the pressure shield 27 is intended to absorb forces related to the pressure prevailing inside the pressure jacket 20. For example, the pressure shield 27 is formed from a helically wound metal profile wire around the sheath 20. Profiled wires usually have complex geometries, in particular a Z-shape, T-shape, U-shape, K-shape, X-shape or I-shape.
The pressure shield 27 is helically wound around the pressure jacket 20 at a short pitch, i.e. the absolute value of the helix angle is close to 90 °, typically between 75 ° and 90 °.
The flexible pipe 10 according to the present invention comprises at least one protective layer 24, 25 formed by helical winding of at least one elongated protective element 63.
In the example shown in fig. 1, the flexible pipe 10 comprises a plurality of protective layers 24, 25, in particular an inner protective layer 24 applied on a pressure shield 27 and an outer protective layer 25 positioned around the outer protective layer 30.
Each armour layer 24, 25 comprises longitudinal armour elements 63 wound at a long pitch around the axis a-a' of the pipe.
By "wound with a long pitch" is meant that the absolute value of the helix angle is less than 60 °, and typically between 25 ° and 55 °.
Generally, the protective elements 63 of the first layer 24 are wound according to an opposite angle with respect to the protective elements 63 of the second layer 25. Thus, if the winding angle of the protective element 63 of the first layer 24 is equal to + α between 25 ° and 55 °, the winding angle of the protective element 63 of the second protective layer 25 positioned in contact with the first protective layer 24 is equal to- α °, for example.
The protective element 63 is formed, for example, by a metal wire, in particular a steel wire, or by a strip of composite material, for example a strip reinforced with carbon fibres.
Outer jacket 30 is intended to prevent fluid from penetrating from the exterior to the interior of flexible pipe 10. The outer sheath is advantageously made of a polymeric material, in particular based on a polyolefin (for example polyethylene) or on a polyamide (for example PA11 or PA 12).
The thickness of the outer sheath 30 is for example between 5mm and 15 mm.
The
The machine 100 comprises a central mandrel 102 defining an outer tubular surface 104 for supporting and shaping the
The forming device 108 includes a forming machine apparatus 110, a first feeder 112 for feeding the flat
The molding apparatus 108 further includes a locking device 115 that is capable of closing and interlocking successive turns of the combined
In this example, the central mandrel 102 directly defines an outer surface 104 around which the
In this example, the central mandrel 102 is formed from a metal tube that defines an outer surface 104.
In one variant (not shown), the outer surface 104 is defined onto a tubular sheath of the pipe.
The rotary support 106 is here formed by a circular table. The rotational support 106 defines a front face 116 and a back face 118 opposite the front face 116. The rotational support defines a central through-passage 120 between the front and rear faces 116, 118 through which the spindle 102 extends.
The rotary support 106 is rotatable with respect to the outer surface 104 about the winding axis E-E' so as to allow winding of successive turns of the
As described above, the forming device 108 is carried by the rotating support 106 so as to rotate with the rotating support 106. The former apparatus 110 includes at least one (preferably a plurality) of upstream forming stations 122A-122G, at least an intermediate joining
The molding machine apparatus 110 also includes a common support 128 that carries the upstream forming stations 122A-122G, the joining
The upstream forming stations 122A-122G, the joining
The
The
The upstream forming stations 122A to 122G are configured to receive the flat
The upstream forming stations comprise at least one station 122A, 122B for forming the
In fig. 5, a station 122B for forming the
In this example, the roller comprises two
In plane P, the
In this example, the
The
In another
The
The
In another upstream preforming station 122F, the
The
The curved concavity is capable of bending the side of the
As shown in fig. 8, in the intermediate joining
The
The
Advantageously, the
In the intermediate joining
Thus, the preformed first 31 and second 48 strips are joined by being placed with the longitudinal local axes parallel to each other. The preformed first 31 and second 48 strips are close to each other, preferably in contact with each other.
The preformed
The
In the
In the example of fig. 9 and 10, the
The
Here, a laterally
Similarly, the
The
The
Void 134 also includes: two
The first feeder 112 is configured to feed the
The first feeder comprises a first unwinder 180 around which the first
The first feeder 112 also comprises first guide rollers 182A, 182B, 182C, which, when entering the upstream forming station 122A, are able to guide the
The second feeder 114 includes a second unwinder 184 and second guide rollers 186A, 186B to feed the
The second guide rollers 186A, 186B are configured to change the direction of the local longitudinal axis of the
In the example of fig. 4, the second feeder 114 also comprises a brake 187 for controlling the feeding speed of the
the support 128 holds, in succession, the
The shift device 129 includes: a
A method for manufacturing the
When performing the method, the first feeder 112 is activated to unwind the first
The
The
As shown in fig. 5, in the stations 122A to 122B, the
Then, as shown in FIG. 6, the
In fig. 7, the side edges of the
Simultaneously, the second feeder 114 is activated to unwind the
In the joining
The preformed
Thus, the longitudinal local axes of the preformed
Then, in the downstream forming stations 126A to 126C, the first 31 and second 48 strips are co-formed in the
Furthermore, in the
Finally, in
The combined formed
The combined shaped
At the same time, the partially open
The
The radial application members of the locking device 115 are then applied on the outside of the combined profile strips 196 in order to close and interlock the
Once the
The method of manufacturing the
The first feeder 112 for the
The
In a variant, the
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