CN117878813A - Submarine cable cabin sealing assembly, optoelectronic composite cable and submarine cable cabin entry method - Google Patents
Submarine cable cabin sealing assembly, optoelectronic composite cable and submarine cable cabin entry method Download PDFInfo
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- CN117878813A CN117878813A CN202410022785.6A CN202410022785A CN117878813A CN 117878813 A CN117878813 A CN 117878813A CN 202410022785 A CN202410022785 A CN 202410022785A CN 117878813 A CN117878813 A CN 117878813A
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- submarine cable
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- sealing structure
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/10—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle in or under water
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/013—Sealing means for cable inlets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
- H02G15/12—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers
- H02G15/14—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes for incorporating transformers, loading coils or amplifiers specially adapted for submarine cables
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Power Engineering (AREA)
- Electric Cable Installation (AREA)
Abstract
本发明提供了一种海缆入舱密封组件、光电复合缆及海缆入舱的方法。海缆入舱密封组件包括：外壳结构；设置在腔体内且沿第一轴线方向依次设置的第一外护套密封结构、第二外护套密封结构、铠装层固定结构和内护套密封结构，第一外护套密封结构、第二外护套密封结构、铠装层固定结构和内护套密封结构均限定出供海缆穿过的通孔，且多个通孔相互连通；其中，第一外护套密封结构和第二外护套密封结构位于外壳结构的第一端且被构造为用于密封外壳结构的内壁面和海缆的外护套之间的间隙，铠装层固定结构和内护套密封结构位于外壳结构的第二端。本发明的技术方案能够解决现有技术中的密封结构容易受损进而导致密封失效的问题。
The present invention provides a submarine cable cabin sealing assembly, an optoelectronic composite cable and a method for submarine cable cabin entry. The submarine cable cabin sealing assembly includes: an outer shell structure; a first outer sheath sealing structure, a second outer sheath sealing structure, an armor layer fixing structure and an inner sheath sealing structure which are arranged in the cavity and arranged in sequence along the first axial direction, the first outer sheath sealing structure, the second outer sheath sealing structure, the armor layer fixing structure and the inner sheath sealing structure all define through holes for the submarine cable to pass through, and the multiple through holes are interconnected; wherein the first outer sheath sealing structure and the second outer sheath sealing structure are located at the first end of the outer shell structure and are configured to seal the gap between the inner wall surface of the outer shell structure and the outer sheath of the submarine cable, and the armor layer fixing structure and the inner sheath sealing structure are located at the second end of the outer shell structure. The technical solution of the present invention can solve the problem in the prior art that the sealing structure is easily damaged, thereby causing sealing failure.
Description
Technical Field
The invention relates to the technical field of submarine cables, in particular to a submarine cable cabin-entering sealing assembly, a photoelectric composite cable and a submarine cable cabin-entering method.
Background
The underwater data cabin for deep sea observation generally needs a multi-core stranded photoelectric composite cable composed of multi-core electric units and optical units to provide energy input and information interaction functions for the multi-core stranded photoelectric composite cable, the underwater data cabin is generally far away from the future, the water depth is deep, and the typical multi-core stranded photoelectric composite cable is provided with a plurality of electric units which can provide high-power direct current or alternating current and a plurality of optical units which are used for transmitting data signals.
At present, the existing submarine cable cabin entering sealing assembly is provided with a sealing structure at an outer sheath and an inner sheath respectively, the sealing structure adopts a mechanical sealing mode based on a rubber sealing piece, gaps between the rubber sealing piece and the submarine cable sheath are filled by extruding the rubber sealing piece, so that sealing between the submarine cable and the gaps of the outer sheath or the inner sheath is achieved, but due to the fact that the multicore stranded submarine cable is not completely symmetrical in structure, after the submarine cable is subjected to large radial extrusion force, a phenomenon of out-of-round occurs in a PE sheath layer for sealing, namely the sheath layer is not symmetrical in the circumferential direction, and further the problem of mechanical sealing failure of the rubber sealing piece is caused. If the radial extrusion force of the rubber sealing ring to the sheath layer is reduced, the external pressure is difficult to balance in a large water depth environment. In the prior art, the submarine cable cabin entering sealing assembly is easy to subject the submarine cable to excessive external force in the laying stage, so that the problem that the sealing structure in the submarine cable cabin entering sealing assembly is damaged and then fails is caused.
Disclosure of Invention
The invention mainly aims to provide a submarine cable cabin-entering sealing assembly, a photoelectric composite cable and a submarine cable cabin-entering method, which can solve the problem that the sealing structure of the submarine cable cabin-entering sealing assembly in the prior art is easy to damage and then causes failure.
To achieve the above object, according to an aspect of the present invention, there is provided a submarine cable in-tank sealing assembly comprising: the shell structure is used for defining a cavity extending along the first axis direction and comprises a first shell, a second shell and a third shell which are sequentially connected; the first outer sheath sealing structure, the second outer sheath sealing structure, the armor layer fixing structure and the inner sheath sealing structure are arranged in the cavity and sequentially arranged along the first axis direction, the first outer sheath sealing structure, the second outer sheath sealing structure, the armor layer fixing structure and the inner sheath sealing structure all define through holes for a submarine cable to pass through, and the through holes are mutually communicated; wherein the first and second oversheath seal structures are located at the first end of the housing structure and are configured to seal a gap between the inner wall surface of the housing structure and the oversheath of the sea cable, the armor layer fixing structure and the inner sheath seal structure are located at the second end of the housing structure and the inner sheath seal structure is configured to seal a gap between the inner wall surface of the housing structure and the inner sheath of the sea cable.
Further, the second outer sheath sealing structure comprises a heat shrinkage tube, the heat shrinkage tube is provided with a through hole extending along the axial direction of the heat shrinkage tube, and an adhesive layer is arranged on the inner wall surface of the through hole.
Further, the submarine cable cabin entering sealing assembly further comprises an inner shell which is arranged in the cavity and fixed with the outer shell structure, the inner shell is provided with an avoidance through hole for the submarine cable to pass through and a glue filling cavity communicated with the avoidance through hole, glue filling holes communicated with the glue filling cavity are formed in the side walls of the inner shell and the outer shell structure, the first end of the heat shrinkage tube is constructed to be capable of being lapped on an outer sheath of the submarine cable, and the second end of the heat shrinkage tube is erected on the outer wall of the inner shell.
Further, the heat shrinkage tube comprises a first tube section and a second tube section which are connected in sequence, the inner diameter of the second tube section is larger than that of the first tube section, the first tube section is coated on the periphery of the partial outer sheath, and the second tube section is coated on the periphery of the inner shell.
Further, the second outer sheath sealing structure further comprises an adhesive piece, wherein the adhesive piece covers the lap joint of the heat shrinkage pipe and the submarine cable, and/or the adhesive piece covers the lap joint of the heat shrinkage pipe and the inner shell.
Further, the cavity comprises a first outer sheath sealing cavity and a second outer sheath sealing cavity which are communicated, the first outer sheath sealing structure is positioned in the first outer sheath sealing cavity, and the second outer sheath sealing structure is positioned in the second outer sheath sealing cavity; the second outer sheath sealing structure further comprises a first structural reinforcement piece, wherein the first structural reinforcement piece is arranged in the glue filling cavity, and/or the first structural reinforcement piece is arranged between the outer wall surface of the heat shrinkage pipe and the inner wall surface of the shell structure.
Further, from the first end to the second end of the housing structure, the first outer jacket sealing structure includes a first locking shaft, a first retainer ring, a first annular sealing member, and a second retainer ring that are sequentially disposed, where the first locking shaft is connected with the housing structure to apply a force to deform the first annular sealing member.
Further, the submarine cable entry compartment seal assembly further comprises a third oversheath seal structure disposed between the second oversheath seal structure and the armor layer securing structure, at least one of the third oversheath seal structure and the inner sheath seal structure comprising: the second locking shaft, the compression ring, the second annular sealing piece and the supporting ring are sequentially arranged.
According to an aspect of the present invention, there is provided a photoelectric composite cable, which is put into a cabin by using the above-mentioned submarine cable put-into-cabin sealing assembly, and includes a photoelectric unit, an inner sheath, an armor layer, and an outer sheath sequentially disposed in a radial direction, wherein the photoelectric unit is formed by twisting a plurality of optical units and a plurality of electrical units, and further includes a second structural reinforcement, and gaps between the plurality of optical units and the plurality of electrical units, and the inside of the armor layer are filled with the second structural reinforcement.
According to an aspect of the present invention, there is provided a submarine cable sealing deployment device comprising a support base plate, the submarine cable entry compartment sealing assembly described above secured to the support base plate, and a bend protection assembly located on one side of the submarine cable entry compartment sealing assembly.
Further, the submarine cable sealing laying device further comprises a cable drum for winding the submarine cable, and the cable drum is fixed on the supporting bottom plate and is positioned between the submarine cable cabin sealing assembly and the bending protection assembly; and/or the submarine cable sealing arrangement device further comprises a clamp assembly fixed on the supporting bottom plate, and the submarine cable cabin entering sealing assembly is fixed with the supporting bottom plate through the clamp assembly.
According to an aspect of the present invention, there is provided a submarine cable entry method for entering a cabin of the above-mentioned photoelectric composite cable, including: a preprocessing step of structurally reinforcing the photoelectric composite cable; and a cabin entering step of sequentially sleeving the first outer sheath sealing structure, the second outer sheath sealing structure, the armor layer fixing structure and the inner sheath sealing structure on the photoelectric composite cable.
Further, the preprocessing step comprises: bending the photoelectric composite cable; a first pouring step of pouring a liquid base material into the photoelectric composite cable, wherein the base material is a material which can be solidified under a first preset condition and can be melted under a second preset condition; a first solidification step of solidifying the base material under a first preset condition; a second pouring step of pouring a liquid material into the photoelectric composite cable, wherein the liquid material can be solidified to form a second structural reinforcement under a third preset condition; a melting step of melting the base material under a second preset condition; and a deployment step of deploying the photoelectric composite cable.
By means of the technical scheme, the sealing structure of the marine cable cabin-entering sealing assembly can avoid the problems of damage and sealing failure of the sealing structure caused by overlarge external force, and improves sealing performance and sealing stability. The submarine cable cabin-entering sealing assembly can be applied to a large water depth environment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 shows a schematic structural view of a submarine cable entry compartment seal assembly according to an embodiment of the invention;
FIG. 2 shows a schematic structural view of a first outer jacket seal structure of the submarine cable entry compartment seal assembly of FIG. 1;
FIG. 3 shows a schematic structural view of a second outer jacket seal structure of the submarine cable entry compartment seal assembly of FIG. 1;
FIG. 4 shows a schematic structural view of a third outer jacket seal structure of the submarine cable entry compartment seal assembly of FIG. 1;
FIG. 5 shows a schematic structural view of the inner jacket seal structure of the submarine cable entry compartment seal assembly of FIG. 1;
fig. 6 shows a schematic structural diagram of an optical-electrical composite cable according to an embodiment of the present invention;
FIG. 7 shows a schematic structural view of a submarine cable seal deployment device according to an embodiment of the invention;
fig. 8 to 12 show step diagrams of a submarine cable entry method according to an embodiment of the invention.
Wherein the above figures include the following reference numerals:
14. a support base plate; 15. a clamp assembly; 17. a bend protection assembly; 18. a cable drum; 2. a base material; 3. a second structural reinforcement; 4. a housing structure; 5. a first outer jacket seal structure; 51. a first locking shaft; 521. a first retainer ring; 522. the second check ring; 53. a first annular seal; 6. an inner housing; 7. a second outer jacket seal structure; 71. an adhesive member; 72. a first structural reinforcement; 73. a heat shrinkage tube; 8. a third outer jacket seal structure; 81. a second locking shaft; 82. a compression ring; 83. a second annular seal; 84. a support ring; 9. an armor layer fixing structure; 12. an inner sheath sealing structure; 100. an optical-electrical composite cable; 101. an electrical unit; 102. a light unit; 103. an inner sheath; 104. an armor layer; 105. an outer sheath; 200. the submarine cable enters the cabin to seal the assembly.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
In the prior art, the sea cable cabin sealing assembly is in a sealing form of polyethylene material field injection molding, in principle, in order to melt polyethylene material onto the sea cable outer sheath by using injection molding equipment, and form an integral waterproof polyolefin part after solidification, the sealing form needs to include a layer of copper pipe or stainless steel pipe with radial airtight function inside the sea cable for pressure maintaining function during polyethylene injection molding, but the multi-core stranded type photoelectric composite cable with a plurality of optical units is difficult to satisfy the requirement of having a large-size copper pipe or stainless steel pipe.
Referring to fig. 1 to 5, the present invention provides a submarine cable entry compartment seal assembly comprising: a housing structure 4 defining a cavity extending along a first axis direction, the housing structure 4 comprising a first housing, a second housing and a third housing connected in sequence; the first outer sheath sealing structure 5, the second outer sheath sealing structure 7, the armor layer fixing structure 9 and the inner sheath sealing structure 12 are arranged in the cavity and sequentially arranged along the first axis direction, the first outer sheath sealing structure 5, the second outer sheath sealing structure 7, the armor layer fixing structure 9 and the inner sheath sealing structure 12 define through holes for a submarine cable to pass through, and the through holes are mutually communicated; wherein the first and second jacket sealing structures 5, 7 are located at the first end of the outer jacket structure 4 and are configured to seal a gap between the inner wall surface of the outer jacket structure 4 and the outer jacket of the submarine cable, the armor layer fixing structure 9 and the inner jacket sealing structure 12 are located at the second end of the outer jacket structure 4 and the inner jacket sealing structure 12 is configured to seal a gap between the inner wall surface of the outer jacket structure 4 and the inner jacket of the submarine cable.
Through above-mentioned setting, this application is through setting up two oversheath seal structure, can avoid sea cable to go into cabin seal assembly and lead to seal structure impaired, seal failure's problem because of receiving too big external force, improves sealing performance and sealing stability. The submarine cable cabin-entering sealing assembly can be applied to a large water depth environment.
As shown in fig. 1 to 5, in the embodiment of the present invention, the second outer sheath sealing structure 7 includes a heat shrinkage tube 73, the heat shrinkage tube 73 has a through hole extending in an axial direction thereof, and an adhesive layer is provided on an inner wall surface of the through hole.
In the above technical scheme, the second outer sheath sealing structure 7 further comprises an adhesive piece 71, the adhesive piece 71 covers the overlapping position of the heat shrinkage tube 73 and the submarine cable, the adhesive piece 71 covers the overlapping position of the heat shrinkage tube 73 and the inner shell 6, the adhesive piece is a modified polyethylene adhesive film, and the adhesive piece 71 can play a role in auxiliary sealing. The adhesive layer is a hot melt adhesive made of strong EVA material, and the EVA material and a modified polyethylene adhesive film (POE, thermoplastic polyethylene copolymer) are based on the similar compatible adhesive principle, so that the adhesive layer and the heat shrinkage pipe polyolefin and the submarine cable sheath have good adhesive effect.
Through the arrangement, the sealing process of the heat shrinkage pipe and the modified polyethylene adhesive film is used, so that the sealing reliability of the submarine cable sheath is further enhanced, and the sealing effect is improved.
In one embodiment of the invention, the adhesive 71 may also be covered only at the overlap of the heat shrink tubing 73 with the sea cable or only at the overlap of the heat shrink tubing 73 with the inner housing 6.
In another embodiment of the present invention, the adhesive 71 may be an auxiliary sealing material such as a hot melt adhesive, a waterproof tape, etc.
The invention adopts the design of the submarine cable entering cabin sealing assembly, and the submarine cable entering cabin sealing assembly plays roles of armor fixation, axial sealing and photoelectric separation of the submarine cable, so that the problem that seawater enters the underwater electric equipment along the submarine cable after the submarine cable is broken for various reasons to cause water inlet short circuit of the equipment can be avoided. The submarine cable cabin-entering sealing assembly has the advantages that one end of the submarine cable cabin-entering sealing assembly is the submarine cable, the other end of the submarine cable cabin-entering sealing assembly is the watertight photoelectric connector, and the watertight photoelectric connector can prevent seawater from entering the underwater electric equipment along the submarine cable cabin-entering sealing assembly.
As shown in fig. 1 to 5, in the embodiment of the present invention, the submarine cable cabin entering sealing assembly further includes an inner housing 6 disposed in the cavity and fixed to the outer housing structure 4, the inner housing 6 has an avoidance through hole through which the submarine cable passes and a glue filling cavity communicated with the avoidance through hole, glue filling holes communicated with the glue filling cavities are formed in side walls of the inner housing 6 and the outer housing structure 4, a first end of the heat shrinkage tube 73 is configured to be capable of being lapped on an outer sheath of the submarine cable, and a second end of the heat shrinkage tube 73 is lapped on an outer wall of the inner housing 6.
Through the above arrangement, the heat shrinkage tube 73 can be fixedly connected with the inner housing 6, thereby stably supporting the heat shrinkage tube 73 and improving the sealing performance.
As shown in fig. 1 to 5, in the embodiment of the present invention, the heat shrinkage tube 73 includes a first tube section and a second tube section connected in sequence, the inner diameter of the second tube section is larger than that of the first tube section, the first tube section is coated on the outer periphery of a part of the outer sheath, and the second tube section is coated on the outer periphery of the inner housing 6.
Through above-mentioned setting, pyrocondensation pipe 73 is reducing pyrocondensation pipe, like this, the appearance structure of pyrocondensation pipe 73 can be better with sea cable oversheath and the appearance structure of inner housing 6 suits to improve sealed effect.
In another embodiment of the present invention, the heat shrinkage tube 73 may be provided in other shapes as long as it is ensured that the heat shrinkage tube can cover the submarine cable and the inner housing after being heated.
As shown in fig. 1 to 5, in the embodiment of the present invention, the cavity includes a first outer sheath sealing cavity and a second outer sheath sealing cavity which are communicated, the first outer sheath sealing structure 5 is located in the first outer sheath sealing cavity, and the second outer sheath sealing structure 7 is located in the second outer sheath sealing cavity; the second outer jacket sealing structure 7 further comprises a first structural reinforcement 72, the first structural reinforcement 72 is arranged in the glue-pouring cavity, and/or the first structural reinforcement 72 is arranged between the outer wall surface of the heat shrink tube 73 and the inner wall surface of the outer jacket structure 4.
Through above-mentioned setting, this application utilizes epoxy to contract the back along radial direction's shrink force, can strengthen the cohesion to pyrocondensation pipe 73, and low viscosity epoxy can tightly hug tightly at the surface of oversheath, pyrocondensation pipe and modified polyethylene adhesive film after solidifying, because the sealed technology of pyrocondensation pipe 73 and modified polyethylene adhesive film receives external force especially moment to destroy, and then influences sealed effect, through pouring low viscosity epoxy, can strengthen the mechanical rigidity in this region.
In another embodiment of the present invention, the low viscosity epoxy resin may be replaced by a glue having mechanical strength after solidification, such as polyurethane glue.
As shown in fig. 1 to 5, in the embodiment of the present invention, the first outer sheath sealing structure 5 includes, from the first end to the second end of the housing structure 4, a first locking shaft 51, a first collar 521, a first annular seal 53, and a second collar 522, which are sequentially disposed, and the first locking shaft 51 is connected to the housing structure 4 to apply a force to deform the first annular seal 53.
Through the above arrangement, the first locking shaft 51 is provided with an external thread to be screwed with the housing structure 4, the first locking shaft 51 being capable of exerting a force to deform the first annular seal 53 to effect sealing, the first oversheath seal structure 5 being for mechanical sealing of the oversheath.
As shown in fig. 1 to 5, in an embodiment of the present invention, the submarine cable entry compartment seal assembly further comprises a third oversheath seal structure 8 disposed between the second oversheath seal structure 7 and the armor layer fixing structure 9, at least one of the third oversheath seal structure 8 and the inner oversheath seal structure 12 comprising, from the first end to the second end of the enclosure structure 4: the second locking shaft 81, the pressing ring 82, the second annular seal 83, and the support ring 84 are sequentially provided.
In the above technical solution, the third outer jacket sealing structure 8 and the inner jacket sealing structure 12 have the same structure, and the second locking shaft 81, the pressing ring 82, the second annular sealing member 83 and the supporting ring 84 are all sequentially arranged along the direction from the armor fixing structure 9 to the armor fixing structure 9. The second annular sealing element 83 is a multi-channel V-shaped rubber sealing ring, and is in threaded connection with the housing structure 4 by utilizing a threaded section on the outer surface of the second locking shaft 81, and the second locking shaft 81 compresses the second annular sealing element 83 to deform the second annular sealing element so as to fill a gap between the outer sheath and the inner sheath, thereby achieving the effect of water blocking and sealing.
Through the arrangement, the auxiliary sealing function can be achieved on the outer sheath and the inner sheath, the function of centering the submarine cable is achieved, and the inner sheath sealing structure 12 is used for strengthening the sealing effect on the submarine cable.
In the embodiment of the present invention, the armor fixing structure 9 fixes the armor wires using conventional wire-fastening glue, thereby fixing the armor. The first, second and third housings can be fixed by the long screw assembly and serve to strengthen rigidity.
In another embodiment of the invention, the armor fixing structure 9 may also employ mechanical clamps.
In the embodiment of the invention, the sealing element adopted for the mechanical sealing of the sheath layer of the submarine cable can be a cylindrical sealing ring, a multi-channel V-shaped sealing ring, a conical sealing ring or an O-shaped sealing ring, so long as the rubber deformation principle of the sealing element can be utilized.
As shown in fig. 6, the present invention further provides a photoelectric composite cable, which is put into a cabin by using the above-mentioned submarine cable put-into-cabin sealing assembly, and includes a photoelectric unit, an inner sheath 103, an armor layer 104 and an outer sheath 105 sequentially disposed along a radial direction, wherein the photoelectric unit is formed by twisting a plurality of optical units 102 and a plurality of electrical units 101, the photoelectric composite cable further includes a second structural reinforcement 3, and gaps between the plurality of optical units 102 and the plurality of electrical units 101 and the inside of the armor layer 104 are filled with the second structural reinforcement 3.
In the above technical solution, the optical unit 102 and the electrical unit 101 provide the function of electric energy transmission and information transmission for the photoelectric composite cable, the armor layer 104 and the armor pad layer provide mechanical strength for the submarine cable, and the outer sheath 105 and the inner sheath 103 provide a radial water blocking function for the submarine cable. The second structural reinforcement 3 is epoxy resin, and through filling the epoxy resin into the photoelectric composite cable in advance, the radial mechanical strength of the photoelectric composite cable can be improved, and the photoelectric composite cable is prevented from being stressed and deformed under the extrusion force of the external sealing member, so that the strength and the sealing performance of the photoelectric composite cable can be simultaneously met by using mechanical sealing under the condition of large water depth.
As shown in fig. 7, the present invention further provides a submarine cable sealing arrangement device, which comprises a support base plate 14, the submarine cable entry compartment sealing assembly 200 fixed on the support base plate 14, and a bending protection assembly 17 positioned at one side of the submarine cable entry compartment sealing assembly 200.
In the above technical solution, the submarine cable sealing arrangement device further comprises a clamp assembly 15 fixed on the supporting base plate 14, and the submarine cable cabin entering sealing assembly is fixed with the supporting base plate 14 through the clamp assembly 15. The clamp assembly 15 provides a rigid securement to the submarine cable entry compartment seal assembly.
The submarine cable sealing arrangement device has all technical characteristics and all technical effects of the submarine cable cabin sealing assembly, and is not repeated here.
As shown in fig. 7, in the embodiment of the present invention, the submarine cable sealing arrangement further includes a cable drum 18 around which the submarine cable is wound, and the cable drum 18 is fixed on the support base plate 14 and located between the submarine cable entry compartment sealing assembly and the bend protection assembly 17.
With the above arrangement, the submarine cable entry sealing assembly 200 is laid on the supporting base plate 14, the submarine cable exiting from the submarine cable entry sealing assembly 200 is coiled on the cable drum 18 for several turns, and thus, in the laying stage of the submarine cable and the submarine cable entry sealing assembly 200, the tension born by the submarine cable is firstly converted into centripetal tightening force of the submarine cable on the cable drum 18, and the acting force applied to the submarine cable at the submarine cable entry sealing assembly 200 is reduced.
In another embodiment of the present invention, the cable drum 18 may be replaced by other structures, and only the external force applied to the submarine cable needs to be converted into the centripetal tightening force of the structure.
As shown in fig. 8 to 12, the present invention further provides a submarine cable cabin entering method, which is to enter the cabin into the above-mentioned photoelectric composite cable 100, and includes: a preprocessing step of performing structural reinforcement on the optical composite cable 100; and a cabin entering step of sequentially sleeving the first outer sheath sealing structure 5, the second outer sheath sealing structure 7, the armor layer fixing structure 9 and the inner sheath sealing structure 12 on the photoelectric composite cable 100.
The method for putting the submarine cable into the cabin has all the technical characteristics and all the technical effects of the photoelectric composite cable, and is not repeated here.
It should be noted that, fig. 8 is a schematic diagram illustrating a bending step of bending the photoelectric composite cable; fig. 9 shows a schematic diagram of a first pouring step of pouring a liquid base material inside a photoelectric composite cable; FIG. 10 illustrates a schematic view of the solidification of liquid material within a photovoltaic composite cable to form a second structural reinforcement; FIG. 11 shows a schematic diagram of a melting step of melting a base material by heating; fig. 12 shows a schematic diagram of an unwinding step of unwinding the photoelectric composite cable.
In an embodiment of the invention, the preprocessing step comprises: a bending step of bending the photoelectric composite cable 100; a first pouring step of pouring a liquid base material 2, which is a material that can be solidified under a first preset condition and can be melted under a second preset condition, into the inside of the photoelectric composite cable 100; a first solidification step of solidifying the base material under a first preset condition; a second pouring step of pouring a liquid material into the inside of the photoelectric composite cable 100, the material being capable of solidifying under a third preset condition to form a second structural reinforcement 3; a melting step of melting the base material under a second preset condition; and a deployment step of deploying the photoelectric composite cable 100.
In the above technical solution, after determining that the submarine cable needs to be mechanically sealed based on the rubber sealing element, bending the photoelectric composite cable 100 into a U shape, filling melted paraffin (i.e., a base material), cooling and solidifying the paraffin under a first preset condition (i.e., a room temperature environment), continuously filling low-viscosity epoxy resin, heating the paraffin at the bottom of the U-shaped photoelectric composite cable 100 under a third preset condition after solidifying the low-viscosity epoxy resin, and expanding the photoelectric composite cable 100 into a straight line state after melting the paraffin, thereby obtaining a section of photoelectric composite cable 100 filled with the low-viscosity epoxy resin.
Through the arrangement, the epoxy resin is filled into the photoelectric composite cable 100 in advance, gaps among the electric unit, the optical unit, the inner sheath, the armor layer, the armor cushion layer and the outer sheath are filled with the low-viscosity epoxy resin, so that the radial mechanical strength of the photoelectric composite cable 100 can be improved, the photoelectric composite cable 100 is prevented from being deformed under the extrusion force of an external sealing element, and the submarine cable can be sealed by using a mechanical sealing method based on the rubber sealing element, and the strength and the sealing performance of the submarine cable can be simultaneously met by using the mechanical sealing under the deep water.
In another embodiment of the present invention, the base material that functions as a temporary blocking is not limited to paraffin, and other materials may be used, so that the melting point of the base material is smaller than that of the epoxy resin.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the utility model provides a through setting up two oversheath seal structure, can avoid sea cable to go into cabin seal assembly and lead to seal structure impaired, seal failure's problem because of receiving too big external force, improve sealing performance and sealing stability. The submarine cable cabin-entering sealing assembly can be applied to a large water depth environment.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A submarine cable entry compartment seal assembly comprising:
a housing structure (4) defining a cavity extending in a first axis direction, the housing structure (4) comprising a first housing, a second housing and a third housing connected in sequence;
the first outer sheath sealing structure (5), the second outer sheath sealing structure (7), the armor layer fixing structure (9) and the inner sheath sealing structure (12) are arranged in the cavity and sequentially arranged along the first axis direction, the first outer sheath sealing structure (5), the second outer sheath sealing structure (7), the armor layer fixing structure (9) and the inner sheath sealing structure (12) are all defined with through holes for a submarine cable to pass through, and the through holes are mutually communicated;
wherein the first outer jacket sealing structure (5) and the second outer jacket sealing structure (7) are located at a first end of the housing structure (4) and are configured to seal a gap between an inner wall surface of the housing structure (4) and an outer jacket of the submarine cable, the armor fixing structure (9) and the inner jacket sealing structure (12) are located at a second end of the housing structure (4) and the inner jacket sealing structure (12) is configured to seal a gap between an inner wall surface of the housing structure (4) and an inner jacket of the submarine cable.
2. Submarine cable entry compartment seal assembly according to claim 1, wherein the second oversheath seal structure (7) comprises a heat shrink tube (73), the heat shrink tube (73) having the through hole extending in its axial direction and an adhesive layer being provided on an inner wall surface of the through hole.
3. The submarine cable entry compartment sealing assembly according to claim 2, further comprising an inner housing (6) arranged in the cavity and fixed with the outer housing structure (4), wherein the inner housing (6) is provided with an avoidance through hole for the submarine cable to pass through and a glue filling cavity communicated with the avoidance through hole, glue filling holes communicated with the glue filling cavity are formed in the side walls of the inner housing (6) and the outer housing structure (4), a first end of the heat shrinkage tube (73) is configured to be capable of being lapped on an outer jacket of the submarine cable, and a second end of the heat shrinkage tube (73) is lapped on the outer wall of the inner housing (6).
4. A submarine cable entry compartment seal assembly according to claim 3, wherein the heat shrink tube (73) comprises a first barrel section and a second barrel section connected in sequence, the inner diameter of the second barrel section is larger than that of the first barrel section, the first barrel section is coated on the periphery of part of the outer sheath, and the second barrel section is coated on the periphery of the inner shell (6).
5. A submarine cable entry sealing assembly according to claim 3, wherein the second outer jacket sealing arrangement (7) further comprises an adhesive (71), the adhesive (71) covering the overlap of the heat shrink tubing (73) with the submarine cable and/or the adhesive (71) covering the overlap of the heat shrink tubing (73) with the inner housing (6).
6. A submarine cable entry compartment seal assembly according to claim 3, wherein the cavity comprises a first and a second jacket seal cavity in communication, the first jacket seal structure (5) being located within the first jacket seal cavity and the second jacket seal structure (7) being located within the second jacket seal cavity;
the second outer sheath sealing structure (7) further comprises a first structural reinforcement (72), the first structural reinforcement (72) is arranged inside the glue filling cavity, and/or the first structural reinforcement (72) is arranged between the outer wall surface of the heat shrinkage tube (73) and the inner wall surface of the outer sheath structure (4).
7. Submarine cable entry sealing assembly according to any one of claims 1 to 6, wherein the first outer jacket sealing arrangement (5) comprises, from a first end to a second end of the enclosure arrangement (4), a first locking shaft (51), a first collar (521), a first annular seal (53) and a second collar (522) arranged in sequence, the first locking shaft (51) being connected to the enclosure arrangement (4) to exert a force on the first annular seal (53) to deform it.
8. Submarine cable entry sealing assembly according to any of claims 1 to 6, further comprising a third oversheath sealing structure (8) arranged between the second oversheath sealing structure (7) and the armor fixing structure (9), at least one of the third oversheath sealing structure (8) and the inner oversheath sealing structure (12) comprising, from a first end to a second end of the outer skin structure (4):
the second locking shaft (81), the compression ring (82), the second annular sealing piece (83) and the supporting ring (84) are sequentially arranged.
9. A photoelectric composite cable, characterized in that the photoelectric composite cable is put into a cabin by using the submarine cable put-into-cabin sealing assembly according to any one of claims 1 to 8, the photoelectric composite cable comprises a photoelectric unit, an inner sheath (103), an armor layer (104) and an outer sheath (105) which are sequentially arranged along a radial direction, wherein the photoelectric unit is formed by stranding a plurality of optical units (102) and a plurality of electrical units (101), the photoelectric composite cable further comprises a second structural reinforcement (3), and gaps between the plurality of optical units (102) and the plurality of electrical units (101) and the inside of the armor layer (104) are filled with the second structural reinforcement (3).
10. A submarine cable sealing deployment device, characterized by comprising a support base plate (14), a submarine cable entry sealing assembly (200) according to any one of claims 1 to 8 fixed to the support base plate (14), and a bend protection assembly (17) located on one side of the submarine cable entry sealing assembly (200).
11. Submarine cable sealing arrangement according to claim 10, further comprising a cable drum (18) around which the submarine cable is wound, the cable drum (18) being fixed on the support floor (14) and between the submarine cable entry compartment sealing assembly and the bend protection assembly (17); and/or the number of the groups of groups,
the submarine cable sealing arrangement device further comprises a clamp assembly (15) fixed on the supporting bottom plate (14), and the submarine cable cabin entering sealing assembly is fixed with the supporting bottom plate (14) through the clamp assembly (15).
12. A method of cradling a submarine cable, characterized in that the method of cradling a photoelectric composite cable (100) according to claim 9, comprising:
a pretreatment step of structurally reinforcing the photoelectric composite cable (100);
and a cabin entering step of sequentially sleeving the first outer sheath sealing structure (5), the second outer sheath sealing structure (7), the armor layer fixing structure (9) and the inner sheath sealing structure (12) on the photoelectric composite cable (100).
13. The submarine cable entry method according to claim 12, wherein said preprocessing step comprises:
a bending step of bending the photoelectric composite cable (100);
a first pouring step of pouring a liquid base material (2) into the photoelectric composite cable (100), wherein the base material (2) is a material which can be solidified under a first preset condition and can be melted under a second preset condition;
a first solidification step of solidifying the base material (2) under the first preset condition;
a second pouring step of pouring a liquid material into the inside of the photoelectric composite cable (100), the liquid material being capable of solidifying under a third preset condition to form the second structural reinforcement (3);
a melting step of melting the base material (2) under the second preset condition; and
a deployment step of deploying the photoelectric composite cable (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410022785.6A CN117878813A (en) | 2024-01-05 | 2024-01-05 | Submarine cable cabin sealing assembly, optoelectronic composite cable and submarine cable cabin entry method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410022785.6A CN117878813A (en) | 2024-01-05 | 2024-01-05 | Submarine cable cabin sealing assembly, optoelectronic composite cable and submarine cable cabin entry method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117878813A true CN117878813A (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410022785.6A Pending CN117878813A (en) | 2024-01-05 | 2024-01-05 | Submarine cable cabin sealing assembly, optoelectronic composite cable and submarine cable cabin entry method |
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| Country | Link |
|---|---|
| CN (1) | CN117878813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120749639A (en) * | 2025-08-29 | 2025-10-03 | 浙江蓝梭海洋科技有限公司 | Deep sea cable multistage sealing device and installation method thereof |
-
2024
- 2024-01-05 CN CN202410022785.6A patent/CN117878813A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120749639A (en) * | 2025-08-29 | 2025-10-03 | 浙江蓝梭海洋科技有限公司 | Deep sea cable multistage sealing device and installation method thereof |
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