CN117734241B - Steel wire-free sea surface floating oil delivery pipe and preparation method thereof - Google Patents
Steel wire-free sea surface floating oil delivery pipe and preparation method thereof Download PDFInfo
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- CN117734241B CN117734241B CN202311733100.0A CN202311733100A CN117734241B CN 117734241 B CN117734241 B CN 117734241B CN 202311733100 A CN202311733100 A CN 202311733100A CN 117734241 B CN117734241 B CN 117734241B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 172
- 239000004744 fabric Substances 0.000 claims abstract description 118
- 229920001971 elastomer Polymers 0.000 claims abstract description 79
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 32
- 239000004917 carbon fiber Substances 0.000 claims abstract description 32
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005260 corrosion Methods 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 230000007797 corrosion Effects 0.000 claims description 28
- 229920000728 polyester Polymers 0.000 claims description 18
- 238000009941 weaving Methods 0.000 claims description 11
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 150000002825 nitriles Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 62
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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Abstract
The invention discloses a steel-wire-free sea surface floating oil delivery pipe and a preparation method thereof, belonging to the technical field of sea surface floating oil delivery pipe manufacture, wherein the steel-wire-free sea surface floating oil delivery pipe comprises an oil pipe body and is characterized in that: the pipe wall of the oil pipe body sequentially comprises an oil-resistant rubber inner layer, a first buffer layer, a cord fabric reinforcing layer, a cord fabric framework layer, a second buffer layer, an oil-resistant rubber middle layer, a third buffer layer, a floating layer and an anti-corrosion rubber outer layer from inside to outside, wherein the cord fabric framework layer is formed by winding skeleton cord fabric, the skeleton cord fabric is woven by taking carbon wires as warp yarns and carbon fiber wires as weft yarns, and the warp yarns are single-stranded wires without twisting. The invention adopts the steel-wire-free sea surface floating oil delivery pipe, replaces the steel wire with the diameter of 15mm with the framework cord fabric, solves the problem of the stress of the steel wire in the sea surface floating oil delivery pipe, and prolongs the service life of the sea surface floating oil delivery pipe.
Description
Technical Field
The invention relates to the technical field of oil pipeline manufacturing, in particular to a sea surface floating oil pipeline and a preparation method thereof.
Background
The wall of the sea surface floating oil delivery pipe comprises a curtain bearing layer and a steel wire framework layer, and the curtain fabric of the curtain bearing layer has only bearing function and has no other functions. The sea surface floating oil delivery pipe has a complex structure and floats on the sea surface throughout the year, is extremely easy to be subjected to fatigue damage caused by the action of environmental loads such as wind, waves, currents and the like, so that crude oil is leaked, and the steel wire framework layer is used as a framework of the sea surface floating oil delivery pipe and bears main loads in use.
The existing steel wire framework layer has the defects that under the stress of a hose, the diameter of a spiral reinforcing steel bar in the steel wire framework layer is about 15mm, so that great stress can be generated on surrounding rubber, and the stress is relatively concentrated.
When the fatigue life analysis is carried out on the sea surface floating oil delivery pipe, the finite element model of the hose is established, the finite element model is solved, the stress strain results of all nodes of the floating hose can be obtained, the stress strain results show that all the structural layers have average stress in the middle of the pipe section, the stress cloud patterns of all the structural layers show obvious periodic characteristics and are distributed in a stripe shape, the pitch of the stripes is approximately the same as the pitch of the spiral steel bars, and the periodic distribution of the stress is caused by the spiral steel bars. The lower life of the floating oil delivery pipe on the sea surface occurs at the position where the spiral reinforcing steel is wound, because the difference of the elastic modulus of the reinforcing steel and the rubber is larger, so that the rubber generates larger strain gradient, and the life is reduced.
Disclosure of Invention
The invention aims to provide a steel-wire-free sea surface floating oil pipeline with long service life and a preparation method thereof.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides a no steel wire sea surface float oil pipe, includes the oil pipe body, the pipe wall of oil pipe body is from interior to outside including oil resistant rubber inlayer, first buffer layer, cord fabric enhancement layer, cord fabric framework layer, second buffer layer, oil resistant rubber middle level, third buffer layer, float layer and corrosion resistant rubber skin in proper order, and cord fabric framework layer is by the coiling of skeleton cord, the skeleton cord is warp with the carbon fiber line, and carbon fiber line is weft and weaves and form, warp is the single strand wire that does not need the twist, the carbon fiber line is that 3 carbon fiber silk merges the twist to form, warp density is 32 ~ 40/10 cm, weft density is 14 ~ 18/10 cm, the wire diameter of carbon fiber line is 2.2 ~ 2.8mm, the wire diameter of carbon fiber silk is 1.1 ~ 1.4mm.
Preferably, the first buffer layer, the second buffer layer and the third buffer layer are all formed by winding buffer cord fabrics.
Preferably, the buffer cord fabric is woven by polyester yarns, the warp density is 90-110 yarns/10 cm, the weft density is 32-36 yarns/10 cm, the wire diameter of the polyester warp is 0.2-0.8mm, and the wire diameter of the carbon fiber yarns is 0.1-0.4mm.
Preferably, the cord fabric reinforcing layer is formed by winding reinforced cord fabric, the reinforced cord fabric is formed by weaving polyester threads, the warp density is 65-80 threads/10 cm, the weft density is 24-28 threads/10 cm, the wire diameter of the polyester warp is 1.0-1.3mm, and the wire diameter of the carbon fiber yarns is 0.3-0.5mm.
Preferably, the material used for the inner layer of the oil-resistant rubber is modified nitrile rubber, and the nitrile contains acrylonitrile polar groups, and the acrylonitrile content is 40%.
The preparation method of the steel-wire-free sea surface floating oil delivery pipe comprises the following steps:
S1, winding an oil-resistant rubber inner layer: selecting a tube core with the inner diameter of 450mm plus or minus 150mm, and coating a release agent on the surface of the tube core; the left flange and the right flange are arranged at two ends of the tube core, and the left flange and the right flange are fixed on the tube core; spirally winding an oil-resistant rubber belt with the thickness of 2+/-0.5 mm and the width of 80+/-20 mm on the tube core, the left flange and the right flange, wherein the winding thickness is 10+/-2 mm, and the winding angle is 70+/-5 degrees;
s2, winding a first buffer layer: spirally winding the buffer cord fabric on the surface of the oil-resistant rubber inner layer, wherein the winding angle is 50+/-5 degrees;
s3, winding a cord fabric reinforcing layer: spirally winding the reinforced cord fabric on the surface of the first buffer layer, wherein the winding angle is 63+/-3 degrees;
s4, winding a cord fabric framework layer: spirally winding the framework cord fabric on the surface of the cord fabric reinforcing layer, wherein the winding angle is 45+/-5 degrees, the winding layer number is 4, and the spiral directions of adjacent layers are opposite;
s5, winding the second buffer layer: spirally winding the buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 50+/-5 degrees;
s6, winding an oil-resistant rubber middle layer: spirally winding an oil-resistant rubber belt with the thickness of 2+/-0.5 mm and the width of 80+/-20 mm on the surface of the second buffer layer, wherein the winding thickness is 10+/-2 mm, and the winding angle is 70+/-5 degrees;
S7, winding a third buffer layer: spirally winding the buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 50+/-5 degrees;
S8, winding a floating layer and a corrosion-resistant rubber outer layer: and winding a floating layer on the surface of the third buffer layer, and winding a corrosion-resistant rubber outer layer on the surface of the floating layer, wherein the winding angle of the corrosion-resistant rubber belt in the corrosion-resistant rubber outer layer is 70+/-5 degrees.
Preferably, the winding thickness of the oil-resistant rubber inner layer is 12+/-2 mm.
Preferably, the winding thickness of the first, second and third buffer layers is 10±2mm.
Preferably, the winding thickness of the corrosion-resistant rubber outer layer is 14+/-2 mm.
Preferably, the wrap thickness of the cord fabric reinforcement layer is 22.+ -.2 mm.
The invention has the beneficial effects that:
The invention adopts the steel-wire-free sea surface floating oil delivery pipe, replaces the steel wire with the diameter of 15mm with the framework cord fabric, solves the problem of the stress of the steel wire in the sea surface floating oil delivery pipe, has small stress, and can prolong the service life of the sea surface floating oil delivery pipe by using the framework cord fabric as the framework of the sea surface floating oil delivery pipe.
The skeleton cord fabric takes the single-strand thick carbon wires as warp wires, distributes the force born by the traditional single-root thick steel wire skeleton to each carbon wire, has the characteristics of good flexibility, small stress, high tensile strength and high bearing capacity, can replace a steel wire skeleton, has equivalent bearing capacity with the single-root thick steel wire skeleton, also distributes the stress of the single-root thick steel wire skeleton, and can solve the problem that the steel wire is used as the skeleton with large stress and relatively concentrated.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one skilled in the art without inventive effort from the following figures:
FIG. 1 is a schematic diagram of the structure of a steel wire-free sea surface floating oil delivery pipe of the present invention;
Fig. 2 is a schematic structural view of the carcass cord fabric of the present invention.
In the figure: 1. an oil resistant rubber inner layer; 2. a first buffer layer; 3. a cord fabric reinforcement layer; 4. a carcass layer of cord fabric; 5. a second buffer layer; 6. an oil-resistant rubber middle layer; 7. a third buffer layer; 8. a floating layer; 9. an outer layer of corrosion resistant rubber; 10. a carbon wire; 11. carbon fiber wires.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be described in further detail with reference to the accompanying drawings and the specific embodiments, and it should be noted that the embodiments of the present application and features in the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward rotation", "reverse", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 1 and 2, the steel-wire-free sea surface floating oil delivery pipe comprises an oil pipe body, wherein the pipe wall of the oil pipe body sequentially comprises an oil-resistant rubber inner layer 1, a first buffer layer 2, a cord fabric reinforcing layer 3, a cord fabric framework layer 4, a second buffer layer 5, an oil-resistant rubber middle layer 6, a third buffer layer 7, a floating layer 8 and a corrosion-resistant rubber outer layer 9 from inside to outside, the cord fabric framework layer 4 is formed by winding framework cord fabrics, the framework cord fabrics are woven by taking carbon wires 10 as warp yarns and taking carbon fiber wires 11 as wefts, the warp yarns are single strands which do not need twisting, the twisting degree refers to the twisting number in unit length, the compactness of the yarns is increased and the strength is increased along with the increase of the twisting degree, but the stress existing in the yarns is larger along with the increase of the twisting degree, and the physical and mechanical properties such as the stretching and the strength of the cord yarns are affected by the twisting degree. In the technical scheme, the warp adopts the single yarn which does not need twisting, and the wire diameter of the carbon yarn is increased, so that not only is the influence of twist parameters on the warp eliminated, but also the tensile strength and the bearing capacity of the cord fabric are greatly improved. The invention adopts the steel-wire-free sea surface floating oil delivery pipe, replaces the steel wire with the diameter of about 15mm with the framework cord fabric, solves the problem of the stress of the steel wire in the sea surface floating oil delivery pipe, and prolongs the service life of the sea surface floating oil delivery pipe.
The carbon fiber wire is formed by combining and twisting 3 strands of carbon fiber wires. The material used for the inner layer of the oil-resistant rubber is modified nitrile rubber, and the nitrile contains acrylonitrile polar groups, and the acrylonitrile content is 40%.
Example 1
The preparation method of the steel-wire-free sea surface floating oil delivery pipe comprises the following steps:
S1, winding an oil-resistant rubber inner layer: selecting a tube core with the inner diameter of 450mm, and coating a release agent on the surface of the tube core; the left flange and the right flange are arranged at two ends of the tube core, and the left flange and the right flange are fixed on the tube core; spirally winding an oil-resistant rubber belt with the thickness of 1.5mm and the width of 60mm on a tube core, a left flange and a right flange, wherein the winding thickness is 8mm, and the winding angle is 65 degrees; the winding thickness of the oil-resistant rubber inner layer is 10mm.
S2, winding a first buffer layer: spirally winding the buffer cord fabric on the surface of the oil-resistant rubber inner layer, wherein the winding angle is 45 degrees; the buffer cord fabric is formed by weaving polyester yarns, the warp density is 90 pieces/10 cm, the weft density is 32 pieces/10 cm, the wire diameter of the polyester warp is 0.2mm, and the wire diameter of the carbon fiber yarn is 0.1mm. The winding thickness of the first buffer layer was 8mm.
S3, winding a cord fabric reinforcing layer: spirally winding the reinforced cord fabric on the surface of the first buffer layer, wherein the winding angle is 60 degrees; the reinforced cord fabric is formed by weaving polyester yarns, the warp density is 65 yarns/10 cm, the weft density is 24 yarns/10 cm, the wire diameter of the polyester warp is 1.0mm, and the wire diameter of the carbon fiber yarns is 0.3mm. The winding thickness of the cord fabric reinforcing layer was 20mm.
S4, winding a cord fabric framework layer: spirally winding the framework cord fabric on the surface of the cord fabric reinforcing layer, wherein the winding angle is 40 degrees, the winding layer number is 4, and the spiral directions between adjacent layers are opposite; in the framework cord fabric, carbon wires are used as warp yarns, carbon fiber wires are used as weft yarns for weaving, the warp yarn density is 32/10 cm, the weft yarn density is 14/10 cm, the wire diameter of the carbon wires is 2.2mm, and the wire diameter of the carbon fiber wires is 1.1mm.
S5, winding the second buffer layer: spirally winding buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 45 degrees, and the adopted buffer cord fabric is the same as that in the step S2; the winding thickness of the second buffer layer was 8mm.
S6, winding an oil-resistant rubber middle layer: spirally winding an oil-resistant rubber belt with the thickness of 1.5mm and the width of 60mm on the surface of the second buffer layer, wherein the winding thickness is 8mm, and the winding angle is 65 degrees;
S7, winding a third buffer layer: spirally winding buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 45 degrees, and the adopted buffer cord fabric is the same as that in the step S2; the winding thickness of the third buffer layer was 8mm.
S8, winding a floating layer and a corrosion-resistant rubber outer layer: and winding a floating layer on the surface of the third buffer layer, and winding a corrosion-resistant rubber outer layer on the surface of the floating layer, wherein the winding angle of the corrosion-resistant rubber belt in the corrosion-resistant rubber outer layer is 65 degrees. The winding thickness of the corrosion-resistant rubber outer layer is 12mm.
Example 2
The preparation method of the steel-wire-free sea surface floating oil delivery pipe comprises the following steps:
s1, winding an oil-resistant rubber inner layer: selecting a tube core with the inner diameter of 600mm, and coating a release agent on the surface of the tube core; the left flange and the right flange are arranged at two ends of the tube core, and the left flange and the right flange are fixed on the tube core; spirally winding an oil-resistant rubber belt with the thickness of 2.5mm and the width of 100mm on a tube core, a left flange and a right flange, wherein the winding thickness is 12mm, and the winding angle is 75 degrees; the winding thickness of the oil-resistant rubber inner layer is 14mm.
S2, winding a first buffer layer: spirally winding the buffer cord fabric on the surface of the oil-resistant rubber inner layer, wherein the winding angle is 55 degrees; the buffer cord fabric is formed by weaving polyester yarns, the warp density is 110 yarns/10 cm, the weft density is 36 yarns/10 cm, the wire diameter of the polyester warp is 0.8mm, and the wire diameter of the carbon fiber yarn is 0.4mm. The winding thickness of the first buffer layer was 12mm.
S3, winding a cord fabric reinforcing layer: spirally winding the reinforced cord fabric on the surface of the first buffer layer, wherein the winding angle is 66 degrees; the reinforced cord fabric is formed by weaving polyester yarns, the warp density is 80 pieces/10 cm, the weft density is 28 pieces/10 cm, the wire diameter of the polyester warp is 1.3mm, and the wire diameter of the carbon fiber yarn is 0.5mm. The winding thickness of the cord fabric reinforcing layer was 24mm.
S4, winding a cord fabric framework layer: spirally winding the framework cord fabric on the surface of the cord fabric reinforcing layer, wherein the winding angle is 50 degrees, the winding layer number is 4, and the spiral directions between adjacent layers are opposite; in the framework cord fabric, carbon wires are used as warp yarns, carbon fiber wires are used as weft yarns for weaving, the warp yarn density is 40 pieces/10 cm, the weft yarn density is 18 pieces/10 cm, the wire diameter of the carbon wires is 2.8mm, and the wire diameter of the carbon fiber wires is 1.4mm.
S5, winding the second buffer layer: spirally winding buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 55 degrees, and the adopted buffer cord fabric is the same as the buffer cord fabric in the step S2; the winding thickness of the second buffer layer was 12mm.
S6, winding an oil-resistant rubber middle layer: spirally winding an oil-resistant rubber belt with the thickness of 2.5mm and the width of 100mm on the surface of the second buffer layer, wherein the winding thickness is 12mm, and the winding angle is 75 degrees;
S7, winding a third buffer layer: spirally winding buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 55 degrees, and the adopted buffer cord fabric is the same as the buffer cord fabric in the step S2; the winding thickness of the third buffer layer was 12mm.
S8, winding a floating layer and a corrosion-resistant rubber outer layer: and winding a floating layer on the surface of the third buffer layer, and winding a corrosion-resistant rubber outer layer on the surface of the floating layer, wherein the winding angle of the corrosion-resistant rubber belt in the corrosion-resistant rubber outer layer is 75 degrees. The winding thickness of the corrosion-resistant rubber outer layer is 16mm.
Example 3
The preparation method of the steel-wire-free sea surface floating oil delivery pipe comprises the following steps:
S1, winding an oil-resistant rubber inner layer: selecting a tube core with the inner diameter of 450mm, and coating a release agent on the surface of the tube core; the left flange and the right flange are arranged at two ends of the tube core, and the left flange and the right flange are fixed on the tube core; spirally winding an oil-resistant rubber belt with the thickness of 2mm and the width of 80mm on a tube core, a left flange and a right flange, wherein the winding thickness is 10mm, and the winding angle is 70 degrees; the winding thickness of the oil-resistant rubber inner layer is 12mm.
S2, winding a first buffer layer: spirally winding the buffer cord fabric on the surface of the oil-resistant rubber inner layer, wherein the winding angle is 50 degrees; the buffer cord fabric is formed by weaving polyester yarns, the warp density is 100 pieces/10 cm, the weft density is 34 pieces/10 cm, the wire diameter of the polyester warp is 0.5mm, and the wire diameter of the carbon fiber yarn is 0.3mm. The winding thickness of the first buffer layer was 10mm.
S3, winding a cord fabric reinforcing layer: spirally winding the reinforced cord fabric on the surface of the first buffer layer, wherein the winding angle is 63 degrees; the reinforced cord fabric is formed by weaving polyester yarns, the warp density is 72 yarns/10 cm, the weft density is 26 yarns/10 cm, the wire diameter of the polyester warp is 1.2mm, and the wire diameter of the carbon fiber yarns is 0.4mm. The winding thickness of the cord fabric reinforcing layer was 22mm.
S4, winding a cord fabric framework layer: spirally winding the framework cord fabric on the surface of the cord fabric reinforcing layer, wherein the winding angle is 45 degrees, the winding layer number is 4, and the spiral directions between adjacent layers are opposite; in the framework cord fabric, carbon wires are used as warp yarns, carbon fiber wires are used as weft yarns for weaving, the warp yarn density is 36 pieces/10 cm, the weft yarn density is 16 pieces/10 cm, the wire diameter of the carbon wires is 2.5mm, and the wire diameter of the carbon fiber wires is 1.3mm.
S5, winding the second buffer layer: spirally winding buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 50 degrees, and the adopted buffer cord fabric is the same as that in the step S2; the winding thickness of the second buffer layer was 10mm.
S6, winding an oil-resistant rubber middle layer: spirally winding an oil-resistant rubber belt with the thickness of 2mm and the width of 80mm on the surface of the second buffer layer, wherein the winding thickness is 10mm, and the winding angle is 70 degrees;
s7, winding a third buffer layer: spirally winding buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 50 degrees, and the adopted buffer cord fabric is the same as that in the step S2; the winding thickness of the third buffer layer was 10mm.
S8, winding a floating layer and a corrosion-resistant rubber outer layer: and winding a floating layer on the surface of the third buffer layer, and winding a corrosion-resistant rubber outer layer on the surface of the floating layer, wherein the winding angle of the corrosion-resistant rubber belt in the corrosion-resistant rubber outer layer is 70 degrees. The winding thickness of the corrosion-resistant rubber outer layer is 14mm.
Working principle: the research shows that the service life of the sea surface floating oil delivery pipe has a direct relation with steel wires in the pipe wall, the stress cloud patterns of all structural layers in the pipe wall of the sea surface floating oil delivery pipe show obvious periodic characteristics and are distributed in a stripe shape, the pitch of the stripes is approximately the same as the pitch of the spiral steel bars, the periodic distribution of the stress is caused by the spiral steel bars, and the pitch of the stripe distribution is approximately the same as the pitch of the spiral steel bars.
The fatigue life experiment shows that the position with lower life is in the position where the spiral reinforcing steel bar is wound, because the difference of the elastic modulus of the reinforcing steel bar and the elastic modulus of the rubber is larger, the rubber generates larger strain gradient, so that the service life is reduced, the problem is solved, the framework cord fabric is researched and developed, the framework cord fabric is used for replacing steel wires in the pipe wall, the steel wires with the diameter of about 15mm are used for bearing external force, the framework cord fabric is used for bearing external force, the external force is dispersed on the cord fabric, the difference of the elastic modulus of the framework cord fabric and the elastic modulus of the rubber is reduced, and the service life of the steel-wire-free sea surface floating oil conveying pipe is prolonged.
Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction. While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (7)
1. The utility model provides a no steel wire sea floats oil pipe, includes oil pipe body, its characterized in that: the pipe wall of the oil pipe body sequentially comprises an oil-resistant rubber inner layer, a first buffer layer, a cord fabric reinforcing layer, a cord fabric framework layer, a second buffer layer, an oil-resistant rubber middle layer, a third buffer layer, a floating layer and an anti-corrosion rubber outer layer from inside to outside, wherein the cord fabric framework layer is formed by winding skeleton cord fabric, the skeleton cord fabric is woven by taking carbon wires as warp yarns and taking carbon fiber wires as weft yarns, the warp yarns are single strands which do not need twisting, the carbon fiber wires are formed by combining and twisting 3 strands of carbon fiber wires, the warp density is 32-40 carbon fiber wires/10 cm, the weft density is 14-18 carbon fiber wires/10 cm, the wire diameter of the carbon fiber wires is 2.2-2.8mm, and the wire diameter of the carbon fiber wires is 1.1-1.4mm;
the first buffer layer, the second buffer layer and the third buffer layer are all formed by winding buffer cord fabrics;
The buffer cord fabric is woven by polyester yarns, the warp density of the buffer cord fabric is 90-110 yarns/10 cm, the weft density of the buffer cord fabric is 32-36 yarns/10 cm, and the wire diameter of the warp is 0.2-0.8mm;
The cord fabric reinforcing layer is formed by winding reinforced cord fabric, the reinforced cord fabric is formed by weaving polyester threads, the warp density of the reinforced cord fabric is 65-80 pieces/10 cm, the weft density is 24-28 pieces/10 cm, and the wire diameter of the warp is 1.0-1.3mm.
2. The wire-less marine floating oil delivery pipe of claim 1, wherein: the material used for the inner layer of the oil-resistant rubber is modified nitrile rubber, and the nitrile contains acrylonitrile polar groups, and the acrylonitrile content is 40%.
3. The method for preparing the steel-wire-free sea surface floating oil delivery pipe, according to claim 2, is characterized in that:
s1, winding an oil-resistant rubber inner layer: selecting a tube core with the inner diameter of 450mm plus or minus 150mm, and coating a release agent on the surface of the tube core; mounting a left flange and a right flange at two ends of the tube core, and fixing the left flange and the right flange on the tube core; spirally winding an oil-resistant rubber belt with the thickness of 2+/-0.5 mm and the width of 80+/-20 mm on the tube core, the left flange and the right flange, wherein the winding thickness is 10+/-2 mm, and the winding angle is 70+/-5 degrees;
s2, winding a first buffer layer: spirally winding the buffer cord fabric on the surface of the oil-resistant rubber inner layer, wherein the winding angle is 50+/-5 degrees;
s3, winding a cord fabric reinforcing layer: spirally winding the reinforced cord fabric on the surface of the first buffer layer, wherein the winding angle is 63+/-3 degrees;
s4, winding a cord fabric framework layer: spirally winding the framework cord fabric on the surface of the cord fabric reinforcing layer, wherein the winding angle is 45+/-5 degrees, the winding layer number is 4, and the spiral directions of adjacent layers are opposite;
s5, winding the second buffer layer: spirally winding the buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 50+/-5 degrees;
s6, winding an oil-resistant rubber middle layer: spirally winding an oil-resistant rubber belt with the thickness of 2+/-0.5 mm and the width of 80+/-20 mm on the surface of the second buffer layer, wherein the winding thickness is 10+/-2 mm, and the winding angle is 70+/-5 degrees;
S7, winding a third buffer layer: spirally winding the buffer cord fabric on the surface of the cord fabric framework layer, wherein the winding angle is 50+/-5 degrees;
S8, winding a floating layer and a corrosion-resistant rubber outer layer: and winding a floating layer on the surface of the third buffer layer, and winding a corrosion-resistant rubber outer layer on the surface of the floating layer, wherein the winding angle of the corrosion-resistant rubber belt in the corrosion-resistant rubber outer layer is 70+/-5 degrees.
4. The method for preparing the steel-wire-free sea surface floating oil delivery pipe according to claim 3, which is characterized in that: the winding thickness of the oil-resistant rubber inner layer is 12+/-2 mm.
5. The method for preparing the steel-wire-free sea surface floating oil delivery pipe according to claim 3, which is characterized in that: the winding thickness of the first buffer layer, the second buffer layer and the third buffer layer is 10+/-2 mm.
6. The method for preparing the steel-wire-free sea surface floating oil delivery pipe according to claim 3, which is characterized in that: the winding thickness of the corrosion-resistant rubber outer layer is 14+/-2 mm.
7. The method for preparing the steel-wire-free sea surface floating oil delivery pipe according to claim 3, which is characterized in that: the winding thickness of the cord fabric reinforcing layer is 22+/-2 mm.
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| CN202311733100.0A CN117734241B (en) | 2023-12-18 | 2023-12-18 | Steel wire-free sea surface floating oil delivery pipe and preparation method thereof |
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| CN202311733100.0A CN117734241B (en) | 2023-12-18 | 2023-12-18 | Steel wire-free sea surface floating oil delivery pipe and preparation method thereof |
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| CN117734241B true CN117734241B (en) | 2024-08-23 |
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| CN103697255A (en) * | 2013-12-24 | 2014-04-02 | 苏州华东橡胶工业有限公司 | Fibre-woven synthetic resin high-pressure hose |
| CN115823367A (en) * | 2022-11-22 | 2023-03-21 | 威海鸿通管材股份有限公司 | Nonmetal marine coiled tubing skeleton layer structure and manufacturing method thereof |
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| NO312483B1 (en) * | 1999-05-14 | 2002-05-13 | Offtech Invest As | Flexible, lightweight composite pipe for high pressure oil and gas applications |
| CN203115331U (en) * | 2012-11-14 | 2013-08-07 | 陕西延长石油西北橡胶有限责任公司 | 12-inch double-framework-layer high-intensity polyurethane hose |
| CN112646376A (en) * | 2020-11-27 | 2021-04-13 | 江苏澳盛复合材料科技有限公司 | Carbon fiber rubber composite pipe and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697255A (en) * | 2013-12-24 | 2014-04-02 | 苏州华东橡胶工业有限公司 | Fibre-woven synthetic resin high-pressure hose |
| CN115823367A (en) * | 2022-11-22 | 2023-03-21 | 威海鸿通管材股份有限公司 | Nonmetal marine coiled tubing skeleton layer structure and manufacturing method thereof |
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