CN113889299B - Umbilical cable - Google Patents
Umbilical cable Download PDFInfo
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- CN113889299B CN113889299B CN202111151992.4A CN202111151992A CN113889299B CN 113889299 B CN113889299 B CN 113889299B CN 202111151992 A CN202111151992 A CN 202111151992A CN 113889299 B CN113889299 B CN 113889299B
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- unit
- sleeve
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- 239000002131 composite material Substances 0.000 claims abstract description 61
- 239000004020 conductor Substances 0.000 claims abstract description 50
- 239000011248 coating agent Substances 0.000 claims abstract description 23
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 17
- 150000001875 compounds Chemical group 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims description 39
- 229910052751 metal Inorganic materials 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 26
- 239000004698 Polyethylene Substances 0.000 claims description 21
- -1 polyethylene Polymers 0.000 claims description 21
- 229920000573 polyethylene Polymers 0.000 claims description 21
- 230000001681 protective effect Effects 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 3
- 239000013043 chemical agent Substances 0.000 abstract description 14
- 239000010720 hydraulic oil Substances 0.000 abstract description 11
- 230000003287 optical effect Effects 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920000915 polyvinyl chloride Polymers 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 229910001039 duplex stainless steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
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- 229910052799 carbon Inorganic materials 0.000 description 2
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- 239000008397 galvanized steel Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
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- 229920000728 polyester Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 210000003954 umbilical cord Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0225—Three or more layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2813—Protection against damage caused by electrical, chemical or water tree deterioration
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention provides an umbilical cable, and relates to the technical field of cables. Wherein, the umbilical includes: a plurality of composite units twisted together; the composite unit comprises a sleeve, a conductor layer coating the sleeve, a first shielding layer coating the conductor layer and a first insulating layer coating the first shielding layer; the sleeve is used for conveying liquid substances, and the conductor layer is used for conveying strong current; the conductor layer is arranged in an insulating manner with the sleeve. The pipe unit and the strong current unit are compounded to obtain the compound unit, and the compound unit can convey liquid substances such as chemical agents or hydraulic oil and the like while conveying strong current, so that the use requirement of an umbilical cable can be met; moreover, as the composite unit has the functions of conveying liquid substances and strong electric current, a plurality of strong electric units do not need to be manufactured independently and assembled with other functional units and protection units, so that the complexity of umbilical cable assembly is reduced and the assembly efficiency is improved.
Description
Technical Field
The invention relates to an umbilical cable, and belongs to the technical field of cables.
Background
Umbilical is a composite cable that is a combination of electrical, optical, hydraulic or chemical tubing, etc., that can be used to transmit electricity and liquids.
In the related art, the umbilical cable comprises a protection unit, a pipe unit, a strong current unit, a filling unit, a weak current unit and an optical unit, wherein the strong current unit, the pipe unit and the filling unit are all multiple; wherein, the pipe unit, the strong current unit, the filling unit, the weak current unit and the light unit are all arranged inside the protection unit so as to avoid the damage of the functional units such as the pipe unit, the strong current unit or the filling unit through the protection unit. The pipe unit is used for conveying liquid substances, such as chemical agents or hydraulic oil; the strong current unit is used for transmitting strong current for underwater action and can be 220V or 380V alternating current; the weak current unit is used for transmitting weak current signals, such as electromagnetic signals for communication or control; the optical unit is used for transmitting optical signals, such as network data signals; the filling unit is filled in the gaps among the strong current unit, the pipe unit, the weak current unit and the light unit, so that the inside of the umbilical cable is tight to ensure radial tightening of the umbilical cable.
However, since the number of functional units in the umbilical is large, the production efficiency of the umbilical is reduced.
Disclosure of Invention
The invention provides an umbilical cable, which solves the problem that the production efficiency of the umbilical cable is reduced due to the fact that the number of functional units in the umbilical cable is large in the prior art.
The invention provides an umbilical cable, which comprises a plurality of composite units stranded together;
the composite unit comprises a sleeve, a conductor layer coating the sleeve, a first shielding layer coating the conductor layer and a first insulating layer coating the first shielding layer; the sleeve is used for conveying liquid substances, and the conductor layer is used for conveying strong electric current; the conductor layer is arranged in an insulating manner with the sleeve.
Optionally, the conductor layer is formed of a plurality of first wires arranged around the sleeve.
Optionally, the material of the first metal wire is copper or copper alloy.
Optionally, the sleeve is a reinforced thermoplastic tube.
Optionally, the sleeve comprises a first nylon layer of a tubular structure, a first metal mesh coating the first nylon layer, a second metal mesh coating the first metal mesh, and a second insulating layer coating the second metal mesh;
the conductor layer coats the second insulating layer.
Optionally, the sleeve comprises a metal tube and a third insulating layer coating the metal tube;
the conductor layer coats the third insulating layer.
Optionally, the metal tube is made of super duplex stainless steel; and/or the number of the groups of groups,
the material of the third insulating layer is any one of polyethylene, polyvinyl chloride and ethylene propylene rubber.
Optionally, the system also comprises a weak current unit;
all the compound units are wound outside the weak current unit;
the weak current unit comprises a plurality of core wires which are twisted together, a plurality of second shielding layers which cover the core wires and are twisted together, and a first protective sleeve which covers the second shielding layers.
Optionally, the material of the core wire is copper or copper alloy; and/or the number of the groups of groups,
the second shielding layer is made of a copper-plastic composite belt, and is wrapped outside the plurality of core wires which are twisted together; and/or the number of the groups of groups,
the material of the first protective sleeve is polyethylene, and the first protective sleeve is extruded outside the second shielding layer.
Optionally, the device further comprises a filling unit and a protecting unit, and the composite unit is multiple;
the filling unit and the compound units are arranged in the protection unit, and the filling unit is filled in the gaps between two adjacent compound units.
Optionally, the protection unit includes an inner sheath covering the outer of the composite units filled with the filling unit, an armor layer covering the inner sheath, and an outer sheath covering the armor layer.
Optionally, the material of the inner sheath is polyethylene, and the inner sheath is extruded outside the plurality of composite units filled with the filling units;
the armor layer is formed by twisting a plurality of armor wires;
the outer sheath is made of polyethylene, and the outer sheath is extruded outside the armor layer.
Optionally, the filling unit is an optical unit, and the optical unit comprises an optical core and a second protective sleeve for coating the optical core; or,
the filling unit is a cylinder supported by polyethylene.
The umbilical cable provided by the invention comprises a plurality of composite units which are stranded together; the composite unit comprises a sleeve, a conductor layer coating the sleeve, a first shielding layer coating the conductor layer and a first insulating layer coating the first shielding layer; the sleeve is used for conveying liquid substances such as chemical agents or hydraulic oil, and the conductor layer is used for conveying strong current for underwater operation; the conductor layer is arranged in an insulating manner with the sleeve. The pipe unit and the strong current unit are compounded to obtain the compound unit, and the compound unit can convey liquid substances such as chemical agents or hydraulic oil and the like while conveying strong current, so that the use requirement of an umbilical cable can be met; moreover, as the composite unit has the functions of conveying liquid substances and strong electric current, a plurality of strong electric units do not need to be manufactured independently and assembled with other functional units and protection units, so that the complexity of umbilical cable assembly is reduced and the assembly efficiency is improved.
Drawings
The above and other objects, features and advantages of embodiments of the present invention will become more readily apparent from the following detailed description with reference to the accompanying drawings. Embodiments of the invention will now be described, by way of example and not limitation, in the figures of the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a composite unit according to an embodiment of the present invention;
FIG. 2 is a schematic view of a reinforced thermoplastic tube according to an embodiment of the present invention;
FIG. 3 is a schematic view of a metal tube according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a composite unit with weak current units according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a weak current cell according to an embodiment of the present invention;
FIG. 6 is a schematic illustration of an umbilical of an embodiment of the present invention;
FIG. 7 is a flow chart of a method of preparing an umbilical cord in accordance with an embodiment of the present invention.
Reference numerals:
10-a composite unit;
11-a sleeve;
111-metal tube;
112-a third insulating layer;
113-a first nylon layer;
114-a first metal mesh;
115-a second metal mesh;
116-a second insulating layer;
12-conductor layer;
13-a first shielding layer;
14-a first insulating layer;
20-filling units;
30-a protection unit;
31-an inner sheath;
32-armor;
33-an outer sheath;
40-weak current unit;
41-core wire;
42-a second shielding layer;
43-first protective sheath.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
It should be understood that the following examples do not limit the order of execution of the steps in the method claimed in the present invention. The individual steps of the method of the invention can be carried out in any possible order and in a cyclic manner without contradiction.
In the description of the present invention, it should be understood that the terms "center," "thickness," "upper," "inner," "outer," "radial," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. 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.
Umbilical is a composite cable that is a combination of electrical, optical, hydraulic or chemical tubing, etc., that can be used to transmit electricity and liquids.
In the related art, the umbilical cable comprises a protection unit, a pipe unit, a strong current unit, a filling unit, a weak current unit and an optical unit, wherein the strong current unit, the pipe unit and the filling unit are all multiple; wherein, the pipe unit, the strong current unit, the filling unit, the weak current unit and the light unit are all arranged inside the protection unit so as to avoid the damage of the functional units such as the pipe unit, the strong current unit or the filling unit through the protection unit. The pipe unit is used for conveying liquid substances, such as chemical agents or hydraulic oil; the strong current unit is used for transmitting strong current for underwater action and can be 220V or 380V alternating current; the weak current unit is used for transmitting weak current signals, such as electromagnetic signals for communication or control; the optical unit is used for transmitting optical signals, such as network data signals; the filling unit is filled in the gaps among the strong current unit, the pipe unit, the weak current unit and the light unit, so that the inside of the umbilical cable is tight to ensure radial tightening of the umbilical cable.
However, since the number of functional units in the umbilical is large, the production efficiency of the umbilical is reduced.
Through careful analysis, the inventors of the present disclosure found that the above-mentioned problems are mainly caused by the fact that, as the capability of the underwater working device is more and more abundant, the number of functional units of the umbilical cable connected to the underwater working device is continuously increased, so that the assembly time between the different functional units is increased, thereby increasing the production time of the umbilical cable and further reducing the production efficiency of the umbilical cable. For this reason, the present disclosure provides an umbilical having a composite unit, which reduces the number of functional units, thereby improving assembly time of each functional unit and further improving production efficiency.
Specifically, the present disclosure provides an umbilical including a composite unit, a filler unit, and a protection unit. The filling unit and the compound units are arranged inside the protection unit, the compound units are stranded, and the filling unit is filled in the gap between two adjacent compound units. The composite unit comprises a sleeve, a conductor layer coating the sleeve, a first shielding layer coating the conductor layer and a first insulating layer coating the first shielding layer; the sleeve is arranged in an insulating manner with the conductor layer. The sleeve is used for delivering liquid substances such as chemical agents or hydraulic oil to perform the functions of the pipe unit described above. The conductor layer is used for conveying strong current so as to realize the functions of the strong current unit. Because the composite unit is provided with the sleeve and the conductor layer, a plurality of pipe units and strong current units do not need to be independently manufactured and assembled with other functional units and protection units, the complexity of umbilical cable assembly is reduced, the assembly efficiency is improved, and the production efficiency of the umbilical cable is improved.
The umbilical provided by the invention is described in detail below with reference to specific examples.
Fig. 1 is a schematic diagram of a composite unit of the present embodiment.
As shown in fig. 1, the present embodiment provides an umbilical including a plurality of composite units 10 stranded together. The composite unit 10 includes a bushing 11, a conductor layer 12 covering the bushing 11, a first shielding layer 13 covering the conductor layer 12, and a first insulating layer 14 covering the first shielding layer 13.
The sleeve 11 is used for conveying liquid substances such as chemical agents or hydraulic oil, and the conductor layer 12 is used for conveying strong current; the conductor layer 12 is arranged insulated from the bushing 11.
The sleeve 11 corresponds to a conventional pipe unit and is used for transporting liquid substances such as chemical agents and hydraulic oil.
The conductor layer 12 corresponds to a conductor in the existing strong current unit and is used for conveying strong current for enabling the underwater working device to work so as to meet the power consumption requirement.
Because the conductor layer 12 is arranged to cover the sleeve 11, heat is generated when the conductor layer 12 is electrified, so that the sleeve 11 is in a stable-temperature working environment, and the failure of chemical agents passing through the sleeve 11 due to the change of the environmental temperature is avoided.
The first shielding layer 13 can prevent electromagnetic interference between two adjacent composite units 10.
The material of the first shielding layer 13 may be a copper-plastic composite tape, and the copper-plastic composite tape may be wrapped outside the conductor layer 12 by wrapping.
The first insulating layer 14 can ensure the insulation of a single composite unit 10, avoiding breakdown of two adjacent composite units 10.
The material of the first insulating layer 14 may be any one of polyethylene, polyvinyl chloride, and ethylene propylene rubber, and the first insulating layer 14 may be formed outside the first shielding layer 13 by extrusion.
The insulating arrangement of the conductor layer 12 and the sleeve 11 means that when the conductor layer 12 is energized, no current flows into the sleeve 11, so that chemical agent failure caused by chemical agent delivery in the sleeve 11 is avoided.
Because the conductor layer 12 is arranged to cover the sleeve 11, the composite unit 10 can simultaneously convey strong current and liquid substances such as chemical agents or hydraulic oil, and can also independently convey strong current, or independently convey liquid substances such as chemical agents or hydraulic oil, so that a plurality of pipe units and strong current units do not need to be independently manufactured and arranged, the number of functional units is further reduced, and the production efficiency of the umbilical cable is improved.
The tube unit of the umbilical in the related art is protected only by the sheath layer of the protection unit 30, and when the sheath layer of the protection unit 30 is broken, seawater may infiltrate into the inside of the umbilical, thereby causing corrosion of the tube unit, especially when the tube unit is a steel tube. The sleeve 11 of the present embodiment is located in the first insulating layer 14, and the composite unit 10 is located in the protecting unit 30, so that the sleeve 11 has at least two layers of protection, and even if the protecting unit 30 breaks, the first insulating layer 14 can still ensure the safety of the sleeve 11, thereby improving the service life of the sleeve 11.
The diameter of the tube unit of the umbilical in the prior art is smaller than that of the strong electric unit, and the numbers of the tube unit and the strong electric unit may be the same or different, and the use of the composite unit 10 will be described below by taking the example that the numbers of the tube unit and the strong electric unit are 7 as examples, so that the weight of the umbilical can be reduced and the utilization rate of the inside of the protection unit 30 can be improved.
Because the diameters of the tube unit and the strong current unit are different, and the optical unit, the weak current unit 40 and other functional units are added, the roundness of the umbilical cable and the close contact between the functional units are ensured through the filling units 20, so that the outer diameter of the existing umbilical cable is larger, the thickness of the outer sheath 33 of the protection unit 30 is thicker, the safety of the umbilical cable can be ensured only when the thickness of the outer sheath 33 is thicker, the overall weight of the umbilical cable is improved, and the space utilization is reduced. The roundness of the umbilical refers to the umbilical being cylindrical.
In the present embodiment, changing 7 pipe units and strong current units into 7 composite units 10 reduces the number of functional units, the outer diameter of the composite units 10 is located between the outer diameter of the pipe units and the outer diameter of the strong current units, since the diameters of the respective composite units 10 are identical, the space inside the protection unit 30 can be effectively utilized, thereby reducing the outer diameter of the umbilical, and each composite unit 10 has an insulating layer, the thickness of the outer sheath 33 of the protection unit 30 can be reduced, and therefore, the thickness of the outer sheath 33 of the umbilical can be reduced by adopting the composite units 10, thereby reducing the overall weight of the umbilical.
It should be further noted that, because the number of functional units of the existing umbilical cable is large, the existing production equipment cannot be produced, and needs to be modified, and the umbilical cable formed by the composite unit 10 of the present embodiment can still be produced by using the existing production equipment, so that the production difficulty is reduced.
In an alternative implementation, as shown in fig. 1, the conductor layer 12 is constituted by a plurality of first wires arranged around the sleeve 11.
In the radial direction of the sleeve 11, the plurality of first wires form at least one conductor layer 12.
The material of the first wire is copper or copper alloy.
Fig. 2 is a schematic view of the reinforced thermoplastic tube of the present embodiment.
In one embodiment of the sleeve, the sleeve 11 is a reinforced thermoplastic tube. Because the reinforced thermoplastic plastic pipe has certain flexibility, the flexibility of the umbilical cable can be improved, and the umbilical cable is beneficial to laying and recycling.
As shown in fig. 2, the sleeve 11 illustratively includes a first nylon layer 113 of a tubular structure, a first metal mesh 114 covering the first nylon layer 113, a second metal mesh 115 covering the first metal mesh 114, and a second insulating layer 116 covering the second metal mesh 115; the conductor layer 12 encapsulates the second insulating layer 116.
The materials of the first metal mesh 114 and the second metal mesh 115 may be the same or different, for example, the first metal mesh 114 and the second metal mesh 115 are woven from steel wires, or the first metal mesh 114 is woven from steel wires and the second metal mesh 115 is woven from iron wires.
The second insulating layer 116 renders the bushing 11 uncharged, enabling an insulating arrangement of the bushing 11 from the conductor layer 12.
The material of the second insulating layer 116 may be polyethylene.
Fig. 3 is a schematic view of a metal tube according to the present embodiment.
As shown in fig. 3, in another implementation of the bushing, the bushing 11 includes a metal tube 11 and a third insulating layer 112 covering the metal tube 11; the conductor layer 12 encapsulates the third insulating layer 112. The metal tube 11 can improve the pressure resistance of the sleeve 11 to protect the safety of hydraulic oil or chemical agent transported therein, and the third insulating layer 112 can prevent the metal tube 11 from being electrified.
The material of the metal tube 11 is super duplex stainless steel, so that the corrosion resistance of the sleeve 11 can be improved.
The third insulating layer 112 is made of any one of polyethylene, polyvinyl chloride and ethylene propylene rubber, and the third insulating layer 112 is coated outside the metal tube 11 in an extrusion molding manner.
Fig. 4 is a schematic diagram of the composite unit of the present embodiment with weak current units; fig. 5 is a schematic diagram of a weak current unit of the present embodiment.
As shown in fig. 4 and 5, in an alternative implementation, a weak current unit 40 is also included. Wherein all the complex units 10 are wound outside the weak current unit 40.
The weak current unit 40 includes a plurality of core wires 41 twisted together, a second shielding layer 42 covering the plurality of core wires 41 twisted together, and a first protective cover 43 covering the second shielding layer 42. The weak current unit 40 is provided such that the umbilical is provided with a control signal transmission channel.
All the composite units 10 are wound around the weak current unit 40, that is, the axis of the weak current unit 40 coincides with the axis of the umbilical cable, so that the space utilization can be improved, and the increase of the outer diameter of the umbilical cable can be avoided.
The material of the core wire 41 is copper or copper alloy.
The material of the second shielding layer 42 is copper plastic composite tape, and the second shielding layer 42 is wrapped around the plurality of core wires 41 twisted together.
The material of the first protective sheath 43 is polyethylene and the first protective sheath 43 is extruded over the second shield layer 42.
Fig. 6 is a schematic diagram of an umbilical of the present embodiment.
As shown in fig. 6, in an alternative implementation, the filling unit 20 and the protecting unit 30 are further included, and the composite unit 10 is multiple. Wherein the filling unit 20 and the composite units 10 are disposed inside the protection unit 30, and the filling unit 20 is filled in the gap between two adjacent composite units 10.
The filling unit 20 can make all the composite units 10 closely attached to each other, so that no relative movement can be generated between the composite units 10, and the roundness of the umbilical cable meets the requirement, namely, the umbilical cable has a round appearance.
The protection unit 30 can ensure that the composite unit 10 and the filling unit 20 are protected from seawater so that the various functions of the umbilical can be operated normally.
As shown in fig. 6, the protection unit 30 optionally includes an inner sheath 31 covering the outside of the plurality of composite units 10 filled with the filling unit 20, an armor layer 32 covering the inner sheath 31, and an outer sheath 33 covering the armor layer 32.
The material of the inner sheath 31 is polyethylene, and the inner sheath 31 is extruded outside the plurality of composite units 10 filled with the filling unit 20.
The thickness of the inner sheath 31 may be 3mm.
The armor layer 32 is formed by stranding a plurality of armor wires. Wherein, the armoured metal wire can adopt low-carbon galvanized steel wire, and the diameter of the armoured metal wire can be 4mm.
In the radial direction of the composite unit 10, the plurality of armour wires are arranged in at least one armour layer 32, and for example, in the present embodiment, two armour layers 32 are arranged in the radial direction of the composite unit 10.
The material of the outer sheath 33 is polyethylene and the outer sheath 33 is extruded over the armor layer 32.
The thickness of the outer sheath 33 may be 4mm.
In one implementation of the filling unit, the filling unit 20 is an optical unit, which includes an optical core and a second protective sheath that encapsulates the optical core, and through the above arrangement, the umbilical cable control signal transmission means are enriched on the premise that the inside of the protective unit 30 is tightly filled.
Illustratively, the optical core includes an optical fiber, a loose tube 11, and a water-blocking paste. Wherein the optical fibers and the water-blocking paste are disposed within the loose tube 11.
The material of the second protective sleeve can be polyethylene, and the second protective sleeve is extruded on the optical core; alternatively, the second protective sheath is also formed of a plurality of armoured wires wound around the optical core.
In another implementation of the filling unit, the filling unit 20 is a cylinder made of polyethylene.
Fig. 7 is a flowchart of a preparation method of the umbilical cable of the present embodiment.
As shown in fig. 7, this embodiment also provides a method for preparing an umbilical cable, including:
s1, forming a conductor layer 12 covering the sleeve 11.
In this embodiment, the preparation method of the umbilical is described by taking the sleeve 11 formed by the metal tube 111 and the third insulating layer 112 as an example, and before the conductor layer 12 is prepared, the sleeve 11 is prepared by the specific method:
s11, a third insulating layer 112 is formed on the metal pipe 111 passing through the extruder at a first predetermined speed and exiting from the outlet of the extruder.
The material of the third insulating layer 112 may be any one of polyethylene, polyvinyl chloride, and ethylene propylene rubber, and the material of the metal tube 111 is super duplex stainless steel.
And S12, enabling the metal tube 111 coated with the third insulating layer 112 to pass through a frame strander, forming a conductor layer 12 on the sleeve 11 which is separated from an outlet of the frame strander, and wrapping non-woven fabrics on the third insulating layer 112.
The stranding of the copper wire on the third insulating layer 112 by the frame stranding machine occurs inside the frame stranding machine; the lapping of the nonwoven is completed after the sleeve 11 leaves the frame strander.
S2, forming a first shielding layer 13 which covers the conductor layer 12.
The nonwoven fabric covering the conductor layer 12 is removed and a copper-plastic composite tape is wrapped around the conductor layer 12 to form a first shielding layer 13.
S3, forming a first insulating layer 14 covering the first shielding layer 13.
The sleeve 11 with the first shielding layer 13 is passed through an extruder at a second predetermined speed to form a first insulating layer 14 covering the first shielding layer 13.
The first insulating layer 14 may be any one of polyethylene, polyvinyl chloride, and ethylene propylene rubber.
S4, preparing the cable core through the composite unit 10 and the filling unit 20.
The vertical cabling machine is adopted to twist the plurality of composite units 10 together, the filling unit 20 is filled in the gaps of the plurality of composite units 10 to form a cable core, double-side gluing cotton tapes are wrapped outside the cable core after the cable core leaves the vertical cabling machine, and the lapping rate of the double-side gluing cotton tapes is controlled to be 15% -25%.
S5, forming an inner sheath 31 for covering the cable core.
The cable core is passed through the extruder at a third predetermined speed to form an inner jacket 31 that covers the cable core.
The material of the inner sheath 31 may be polyethylene, and the thickness of the inner sheath 31 is controlled to 3mm.
S6, forming an armor layer 32 for covering the inner sheath 31.
Two layers of low-carbon galvanized steel wires are armored in opposite directions on a cable core with an inner sheath 31 through an armoring machine, and a polyester fiber belt is repeatedly wrapped in a double-layer mode, and the covering rate of the polyester fiber belt is controlled to be 15% -25%.
S7, forming an outer sheath 33 for covering the armor layer 32.
The cable core with armor layer 32 is passed through an extruder at a fourth predetermined speed to form an outer jacket 33 covering armor layer 32.
The material of the outer sheath 33 may be polyethylene, and the thickness of the outer sheath 33 is 4mm.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. An umbilical comprising a plurality of composite units stranded together;
the composite unit comprises a sleeve, a conductor layer coating the sleeve, a first shielding layer coating the conductor layer and a first insulating layer coating the first shielding layer; the sleeve is used for conveying liquid substances, and the conductor layer is used for conveying strong electric current; the conductor layer is arranged in an insulating way with the sleeve;
the sleeve comprises a first nylon layer of a tubular structure, a first metal net coating the first nylon layer, a second metal net coating the first metal net and a second insulating layer coating the second metal net;
the conductor layer coats the second insulating layer;
the system also comprises a weak current unit;
all the compound units are wound outside the weak current unit;
the weak current unit comprises a plurality of core wires which are twisted together, a plurality of second shielding layers which cover the core wires and are twisted together, and a first protective sleeve which covers the second shielding layers.
2. An umbilical as claimed in claim 1 wherein the conductor layer is comprised of a plurality of first wires disposed around the sleeve.
3. The umbilical of claim 2 wherein the material of the first wire is copper or a copper alloy.
4. The umbilical of claim 1 wherein the sleeve is a reinforced thermoplastic tube.
5. The umbilical of claim 1 wherein the core wire is copper or copper alloy; and/or the number of the groups of groups,
the second shielding layer is made of a copper-plastic composite belt, and is wrapped outside the plurality of core wires which are twisted together; and/or the number of the groups of groups,
the material of the first protective sleeve is polyethylene, and the first protective sleeve is extruded outside the second shielding layer.
6. Umbilical according to any of the claims 1-5, further comprising a filling unit and a protection unit, and the composite unit is multiple;
the filling unit and the compound units are arranged in the protection unit, and the filling unit is filled in the gaps between two adjacent compound units.
7. The umbilical of claim 6, wherein the protection unit includes an inner sheath surrounding the plurality of composite units filled with the filling unit, an armor layer surrounding the inner sheath, and an outer sheath surrounding the armor layer.
8. The umbilical of claim 7 wherein the material of the inner sheath is polyethylene, the inner sheath being extruded over the plurality of composite units filled with the filler units;
the armor layer is formed by twisting a plurality of armor wires;
the outer sheath is made of polyethylene, and the outer sheath is extruded outside the armor layer.
9. The umbilical of claim 6, wherein the filler unit is a light unit comprising a light core and a second protective sheath surrounding the light core; or,
the filling unit is a cylinder made of polyethylene.
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CN202111151992.4A CN113889299B (en) | 2021-09-29 | 2021-09-29 | Umbilical cable |
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CN113889299B true CN113889299B (en) | 2024-03-26 |
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US6538198B1 (en) * | 2000-05-24 | 2003-03-25 | Timothy M. Wooters | Marine umbilical |
CN204215800U (en) * | 2014-12-01 | 2015-03-18 | 刘颂凯 | Exchange 500kV sea electric power cable structure |
CN105351636A (en) * | 2015-12-07 | 2016-02-24 | 天津博威动力设备有限公司 | Composite structure liquid conveying pipe |
EP3333562A2 (en) * | 2016-12-09 | 2018-06-13 | Nexans | Remote detection of insulation damage on insulated tubes or pipes |
CN209766059U (en) * | 2019-06-06 | 2019-12-10 | 中国海洋石油集团有限公司 | Umbilical cable with armor layer for hose composite strong-current underwater production system |
CN111081416A (en) * | 2019-12-23 | 2020-04-28 | 安徽宏源特种电缆股份有限公司 | Breathing and gas guiding integrated cable and production method thereof |
CN211016606U (en) * | 2019-12-31 | 2020-07-14 | 广州广缆装饰材料有限公司 | Tensile waterproof submersible pump cable |
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2021
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US6538198B1 (en) * | 2000-05-24 | 2003-03-25 | Timothy M. Wooters | Marine umbilical |
CN204215800U (en) * | 2014-12-01 | 2015-03-18 | 刘颂凯 | Exchange 500kV sea electric power cable structure |
CN105351636A (en) * | 2015-12-07 | 2016-02-24 | 天津博威动力设备有限公司 | Composite structure liquid conveying pipe |
EP3333562A2 (en) * | 2016-12-09 | 2018-06-13 | Nexans | Remote detection of insulation damage on insulated tubes or pipes |
CN209766059U (en) * | 2019-06-06 | 2019-12-10 | 中国海洋石油集团有限公司 | Umbilical cable with armor layer for hose composite strong-current underwater production system |
CN111081416A (en) * | 2019-12-23 | 2020-04-28 | 安徽宏源特种电缆股份有限公司 | Breathing and gas guiding integrated cable and production method thereof |
CN211016606U (en) * | 2019-12-31 | 2020-07-14 | 广州广缆装饰材料有限公司 | Tensile waterproof submersible pump cable |
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