CN118571555B - A method for preparing a watertight branched optoelectronic composite cable assembly - Google Patents

Abstract

The invention discloses a preparation method of a watertight branch photoelectric composite cable component, the watertight branch photoelectric composite cable assembly comprises a watertight photoelectric composite cable, a 4-light 8-electricity watertight photoelectric composite plug connector, an electric power unit branch, a control unit branch, a signal transmission unit branch and a one-to-one trisulfide joint package; casting and molding the one-to-one trisulfide joint package by adopting a glue filling mold; the preparation method comprises connection vulcanization, branch peeling, cell twisting, control core twisting, signal core twisting and branch treatment. By adopting the manufacturing method, the cable core wires can be combined and matched at will according to the use requirement, and the cable core wires can be formed into a branch after being penetrated into the corresponding PU pipe after being combined, so that the structural design of the total cable is free from special requirements; the branch cable core wires are directly stripped from the main cable core wires and led out, and no cable butt welding spots are arranged at the joints, so that the problem that welding spots at the cable connection parts are easy to break in the vulcanization process is avoided; the branching treatment of the optical unit is realized, and the branching problem of the photoelectric composite cable is solved.

Description

A method for preparing a watertight branched optoelectronic composite cable assembly

Technical Field

The invention relates to the technical field of watertight optoelectronic composite cable assemblies, and in particular to a method for preparing a watertight branch optoelectronic composite cable assembly.

Background Art

With the development of marine equipment technology, the requirements for the functional integration of underwater communication systems are getting higher and higher, and watertight optical-electric composite cables can just meet its application needs. At the underwater equipment terminal, it is often necessary to branch the watertight optical-electric composite cables and connect them with different types of watertight connectors to access different equipment ports.

For watertight cable branching, the existing technology mostly adopts the method of connecting the branch cable with the core wire of the main cable, and then uses high temperature and high pressure vulcanization to achieve sealing. During the vulcanization, the rubber filling and flow process will produce a certain amount of squeezing or pulling force on the cable interface core wire, which is easy to cause the core wire eccentricity and the butt welding point to break. However, due to the special optical properties and low strength physical properties of the optical fiber itself, it is not convenient to use the disconnection and reconnection method to perform branching.

Summary of the invention

The purpose of the present invention is to solve the shortcomings of the prior art and to propose a method for preparing a watertight branched optoelectronic composite cable assembly.

In order to achieve the above object, the present invention adopts the following technical solutions:

The required product requirements are as follows:

A watertight branching optoelectronic composite cable assembly comprises a watertight optoelectronic composite cable, a 4-light 8-electric watertight optoelectronic composite plug connector, a power unit branch, a control unit branch, a signal transmission unit branch and a one-to-three vulcanized joint package;

The 4-light 8-electric watertight optoelectronic composite plug connector is connected to one end of the watertight optoelectronic composite cable, and the other end of the watertight optoelectronic composite cable is connected to a three-branch vulcanized joint package and leads out the power unit branch, the control unit branch and the signal transmission unit branch respectively;

The watertight optoelectronic composite cable includes a cable core and a composite cable outer sheath coated outside the cable core. The cable core includes 1 optical unit, 8 wires and 3 core fillers. The 8 wires are divided into 3 power lines, 3 control lines and 2 signal lines. The 3 power lines are in contact with each other and distributed in a triangle. The 3 control lines are distributed between adjacent power lines at intervals. The 2 signal lines, the optical unit and the 3 core fillers are distributed between the power lines and the adjacent control lines, thereby forming a cable core cluster structure.

The power unit branch includes 3 power lines, PU tube I and 3-core high-voltage watertight plug connector, that is, the 3 power lines are wrapped by PU tube I, and the 3 power lines extend to the 3-core high-voltage watertight plug connector, and PU tube I and the 3-core high-voltage watertight plug connector are cast in one piece;

The control unit branch contains 3 control wires, PU pipe II and 3-core watertight plug connector;

The signal transmission unit branch contains 1 optical unit, 2 signal lines, PU tube III and 4 optical 2 electrical watertight plug connector.

The present invention also provides a method for preparing a watertight branched optoelectronic composite cable assembly, including connection vulcanization, branch stripping, electric core twisting, control core twisting, signal core twisting and branch processing, which is specifically as follows:

First, install a 4-light 8-electric watertight optoelectronic composite plug connector at one end of the watertight optoelectronic composite cable. After installation, use polyurethane glue to vulcanize the connection between the watertight optoelectronic composite cable and the 4-light 8-electric watertight optoelectronic composite plug connector;

Second, at the other end, according to the required branch length, remove the outer sheath of the watertight optoelectronic composite cable, spread out one optical unit, three power lines, three control lines and two signal lines for standby use, remove the three core fillers and cut them off at the same end;

Third, twist the three power cords into one strand, and put a PU tube I of corresponding length on the outside. The inner diameter of PU tube I is slightly larger than the outer diameter of the three power cords. Install a 3-core high-pressure watertight plug connector at the end, and use the connection between the 3-core high-pressure watertight plug connector and PU tube I to inject elastic soft glue from the other end of PU tube I to fill the gap between the power cord and PU tube I.

Fourth, twist the three control wires into one strand, and put a PU tube II of corresponding length on the outside. The inner diameter of PU tube II is slightly larger than the outer diameter of the three control wires. Install a 3-core watertight plug connector at the end, and use the connection between the 3-core watertight plug connector and PU tube II. Inject elastic soft glue from the other end of PU tube II to fill the gap between the control wire and PU tube II.

Fifth, twist one optical unit and two signal lines into one strand, and put a PU tube III of corresponding length on the outside. The inner diameter of PU tube III is slightly larger than the outer diameter of the twisted optical unit and two signal lines. Install a 4-light 2-electric watertight plug connector at the end, and use the connection part of the 4-light 2-electric watertight plug connector and PU tube III to inject elastic soft glue from the other end of PU tube III to fill the gap between the core wire and PU tube III.

Sixth, at the branch of the watertight optoelectronic composite cable and the power unit branch, control unit branch and signal transmission unit branch, polyurethane glue is used to perform a one-to-three vulcanization joint package treatment;

Seventh, conduct photoelectric performance and watertight performance tests to complete the production.

Furthermore, the glue pouring mold used in the sixth one-in-three vulcanized joint package includes a left mold and a right mold. The left mold and the right mold have corresponding pin holes at their corners, which are used to fasten into a mold box by pins. The mold box is provided with holes and grooves for the watertight optoelectronic composite cable, the power unit branch, the control unit branch and the signal transmission unit branch to pass through, and a core cavity for molding the one-in-three vulcanized joint package, and a flat pouring port is connected to the top of the core cavity.

Preferably, the optical unit is a stainless steel tube structure, and four single-mode optical fibers are contained in the tube.

Preferably, the power cord is a 4 ^mm2 power cord, the conductor is a stranded copper wire, and the insulation layer is polyethylene.

Preferably, the control wire is a ² mm2 control wire, the conductor is a stranded copper wire, and the insulation layer is polyethylene.

Preferably, the signal line is a 0.5 ^mm2 control line, the conductor is a single copper wire, and the insulation layer is polyethylene.

Preferably, the core filling material is polyethylene.

Preferably, the outer sheath of the composite cable is made of polyurethane material.

Compared with the prior art, the present invention has the following beneficial effects:

1. By adopting the manufacturing method of the present invention, the cable core wires can be arbitrarily combined and matched according to the use requirements, and after being combined, they can be inserted into the corresponding PU tube to form a branch, so there is no special requirement for the structural design of the main cable;

2. The branch cable core wire of the present invention is directly stripped and led out from the main cable core wire, and there is no cable butt welding point at the node, which avoids the problem that the welding point at the cable connection is easily broken during the vulcanization process;

3. The present invention also realizes the branching processing of the optical unit, solving the branching problem of the optoelectronic composite cable.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a method for preparing a watertight branched optoelectronic composite cable assembly proposed by the present invention;

FIG2 is an end view of a watertight optoelectronic composite cable according to a method for preparing a watertight branch optoelectronic composite cable assembly proposed by the present invention;

FIG3 is a schematic diagram of a branch twisting process of a method for preparing a watertight branched optoelectronic composite cable assembly proposed by the present invention;

FIG4 is a schematic diagram of a PU tube structure of a method for preparing a watertight branched optoelectronic composite cable assembly proposed by the present invention;

FIG5 is a schematic diagram of a branch structure of a power unit in a method for preparing a watertight branched optoelectronic composite cable assembly proposed by the present invention;

FIG6 is a schematic diagram of a control unit branch structure of a method for preparing a watertight branched optoelectronic composite cable assembly proposed by the present invention;

FIG7 is a schematic diagram of a branch structure of a signal transmission unit in a method for preparing a watertight branched optoelectronic composite cable assembly proposed by the present invention;

FIG8 is a perspective structural schematic diagram of a glue-filling mold used in the manufacturing process of a method for preparing a watertight branched optoelectronic composite cable assembly proposed by the present invention.

In the figure: a watertight optoelectronic composite cable 1, an optical unit 11, a power line 12, a control line 13, a signal line 14, a core filler 15, an outer sheath of a composite cable 16, a 4-light 8-electric watertight optoelectronic composite plug connector 2, a power unit branch 3, a PU tube I 31, a 3-core high-pressure watertight plug connector 32, a control unit branch 4, a PU tube II 41, a 3-core watertight plug connector 42, a signal transmission unit branch 5, a PU tube III 51, a 4-light 2-electric watertight plug connector 52, a one-to-three vulcanized joint package 6, a left mold 61, a right mold 62, a pin hole 63, a hole groove 64, a core cavity 65, and a flat casting port 66.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

Embodiment 1:

1-7, a method for preparing a watertight branched optoelectronic composite cable assembly includes a watertight optoelectronic composite cable 1, a 4-light 8-electric watertight optoelectronic composite plug connector 2, a power unit branch 3, a control unit branch 4, a signal transmission unit branch 5, and a one-to-three vulcanized joint package 6;

The 4-light 8-electric watertight optoelectronic composite plug connector 2 is connected to one end of the watertight optoelectronic composite cable 1, and the other end of the watertight optoelectronic composite cable 1 is connected to a three-division vulcanized joint package 6 and leads out the power unit branch 3, the control unit branch 4 and the signal transmission unit branch 5 respectively;

The watertight optoelectronic composite cable 1 comprises a cable core and a composite cable outer sheath 16 coated on the cable core. The cable core comprises an optical unit 11, 8 electric wires and 3 filling cores 15. The 8 electric wires are divided into 3 power lines 12, 3 control lines 13 and 2 signal lines 14. The 3 power lines 12 are in contact with each other and distributed in a triangular shape. The 3 control lines 13 are distributed between adjacent power lines 12 at intervals. The 2 signal lines 14, the optical unit 11 and the 3 filling cores 15 are distributed between the power lines 12 and the adjacent control lines 13, thereby forming a cable core cluster structure.

The power unit branch 3 includes three power lines 12, a PU tube I 31 and a 3-core high-pressure watertight plug connector 32, that is, the three power lines 12 are wrapped by the PU tube I 31, and the three power lines 12 extend to the 3-core high-pressure watertight plug connector 32, and the PU tube I 31 and the 3-core high-pressure watertight plug connector 32 are integrally cast;

The control unit branch 4 includes three control wires 13, a PU tube II 41 and a 3-core watertight plug connector 42;

The signal transmission unit branch 5 includes an optical unit 11 , two signal lines 14 , a PU tube III 51 and a 4-optical 2-electrical watertight plug connector 52 .

The optical unit 11 is a stainless steel tube structure, and contains 4 single-mode optical fibers.

The power cord 12 is a 4 ^mm2 power cord, the conductor is a twisted copper wire, and the insulation layer is polyethylene.

The control wire 13 is a ² mm2 control wire, the conductor is a twisted copper wire, and the insulation layer is polyethylene.

The signal line 14 is a 0.5 ^mm2 control line, the conductor is a single copper wire, and the insulation layer is polyethylene.

The material of the core filler 15 is polyethylene.

The composite cable outer sheath 16 is made of polyurethane material.

Embodiment 2:

In order to realize the specific structure of the method for preparing a watertight branched optoelectronic composite cable assembly described in Example 1, the present invention also proposes a corresponding manufacturing process thereof, as follows:

First, install the 4-light 8-electric watertight optoelectronic composite plug connector 2 at one end of the watertight optoelectronic composite cable 1. After the installation is completed, use polyurethane glue to vulcanize the connection between the watertight optoelectronic composite cable 1 and the 4-light 8-electric watertight optoelectronic composite plug connector 2;

Second, at the other end, according to the required branch length, the composite cable outer sheath 16 of the watertight optoelectronic composite cable 1 is stripped off, one optical unit 11, three power lines 12, three control lines 13 and two signal lines 14 are spread out for standby use, and the three core fillers 15 are removed and cut off at the same end;

Third, twist the three power cords 12 into one strand, and put a PU tube Ⅰ31 of corresponding length on the outside thereof. The inner diameter of the PU tube Ⅰ31 is slightly larger than the outer diameter of the twisted three power cords 12. Install a 3-core high-pressure watertight plug connector 32 at the end, and use the connection between the 3-core high-pressure watertight plug connector 32 and the PU tube Ⅰ31 to inject elastic soft glue from the other end of the PU tube Ⅰ31 to fill the gap between the power cord 12 and the PU tube Ⅰ31;

Fourth, twist the three control wires 13 into one strand, and put a PU tube II 41 of corresponding length on the outside thereof. The inner diameter of the PU tube II 41 is slightly larger than the outer diameter of the three control wires 13. Install a 3-core watertight plug connector 42 at the end, and use the connection between the 3-core watertight plug connector 42 and the PU tube II 41 to inject elastic soft glue from the other end of the PU tube II 41 to fill the gap between the control wire 13 and the PU tube II 41.

Fifth, twist one optical unit 11 and two signal lines 14 into one strand, and put a PU tube III 51 of corresponding length on the outside thereof, the inner diameter of the PU tube III 51 is slightly larger than the outer diameter of the twisted optical unit 11 and two signal lines 14, install a 4-light 2-electricity watertight plug connector 52 at the end, and use the connection part of the 4-light 2-electricity watertight plug connector 52 and the PU tube III 51 to inject elastic soft glue from the other end of the PU tube III 51 to fill the gap between the core wire and the PU tube III 51;

Sixth, at the branch points of the watertight optoelectronic composite cable 1 and the power unit branch 3, the control unit branch 4 and the signal transmission unit branch 5, a one-to-three vulcanization joint package 6 is processed using polyurethane glue;

Seventh, conduct photoelectric performance and watertight performance tests to complete the production.

Among them, the glue pouring mold used for the one-part-three vulcanized joint package 6 includes a left mold 61 and a right mold 62. The left mold 61 and the right mold 62 are respectively provided with corresponding pin holes 63 at the corners, which are used to fasten into a mold box through pins. The mold box is provided with holes 64 for the watertight optoelectronic composite cable 1, the power unit branch 3, the control unit branch 4 and the signal transmission unit branch 5 to pass through, and a core cavity 65 for forming the one-part-three vulcanized joint package 6, and a flat casting port 66 is connected above the core cavity 65.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (7)

1. A method for preparing a watertight branched optoelectronic composite cable assembly, characterized in that the watertight branched optoelectronic composite cable assembly comprises a watertight optoelectronic composite cable (1), a 4-light 8-electric watertight optoelectronic composite plug connector (2), a power unit branch (3), a control unit branch (4), a signal transmission unit branch (5) and a one-to-three vulcanized joint package (6); The 4-light 8-electric watertight optoelectronic composite plug connector (2) is connected to one end of the watertight optoelectronic composite cable (1), and the other end of the watertight optoelectronic composite cable (1) is connected to a three-part vulcanized joint package (6) and leads out a power unit branch (3), a control unit branch (4) and a signal transmission unit branch (5) respectively; The watertight optoelectronic composite cable (1) comprises a cable core and a composite cable outer sheath (16) coated outside the cable core, the cable core comprising an optical unit (11), 8 electrical wires and 3 core fillers (15), the 8 electrical wires are divided into 3 power lines (12), 3 control lines (13) and 2 signal lines (14), the 3 power lines (12) are in contact with each other and are distributed in a triangular shape, the 3 control lines (13) are distributed between adjacent power lines (12) at intervals, and the 2 signal lines (14), the optical unit (11) and the 3 core fillers (15) are distributed between the power lines (12) and the adjacent control lines (13), thereby forming a cable core cluster structure; The power unit branch (3) comprises three power lines (12), a PU tube I (31) and a three-core high-voltage watertight plug connector (32); The control unit branch (4) comprises three control wires (13), a PU tube II (41) and a three-core watertight plug connector (42); The signal transmission unit branch (5) comprises an optical unit (11), two signal lines (14), a PU tube III (51) and a 4-optical 2-electrical watertight plug connector (52); The preparation method is as follows: First, a 4-light/8-electric watertight optoelectronic composite plug connector (2) is installed at one end of the watertight optoelectronic composite cable (1). After the installation is completed, a polyurethane glue is used to vulcanize the connection between the watertight optoelectronic composite cable (1) and the 4-light/8-electric watertight optoelectronic composite plug connector (2); Second, at the other end, according to the required branch length, the composite cable outer sheath (16) of the watertight optoelectronic composite cable (1) is stripped off, one optical unit (11), three power lines (12), three control lines (13) and two signal lines (14) are spread out for use, and the three core fillers (15) are removed and cut off at the same end; Third, the three power cords (12) are twisted into one strand, and a PU tube I (31) of corresponding length is placed on the outside of the strand, the inner diameter of the PU tube I (31) being slightly larger than the outer diameter of the three power cords (12) being twisted together, and a three-core high-pressure watertight plug connector (32) is installed at the end, and elastic soft glue is injected from the other end of the PU tube I (31) at the connection part between the three-core high-pressure watertight plug connector (32) and the PU tube I (31) to fill the gap between the power cord (12) and the PU tube I (31); Fourth, the three control wires (13) are twisted into one strand, and a PU tube II (41) of corresponding length is placed on the outside thereof, the inner diameter of the PU tube II (41) being slightly larger than the outer diameter of the three control wires (13) being twisted together, and a three-core watertight plug connector (42) is installed at the end thereof, and elastic soft glue is injected from the other end of the PU tube II (41) through the connection portion between the three-core watertight plug connector (42) and the PU tube II (41) to fill the gap between the control wire (13) and the PU tube II (41); Fifth, twist one optical unit (11) and two signal lines (14) into one strand, and put a PU tube III (51) of corresponding length on the outside thereof, wherein the inner diameter of the PU tube III (51) is slightly larger than the outer diameter of the twisted strand of one optical unit (11) and two signal lines (14), and install a 4-light 2-electricity watertight plug connector (52) at the end, and use the connection portion of the 4-light 2-electricity watertight plug connector (52) and the PU tube III (51) to inject elastic soft glue from the other end of the PU tube III (51) to fill the gap between the core wire and the PU tube III (51); Sixth, at the branch points between the watertight optoelectronic composite cable (1) and the power unit branch (3), the control unit branch (4) and the signal transmission unit branch (5), a three-part vulcanized joint package (6) is processed using polyurethane glue; Seventh, conduct photoelectric performance and watertightness performance tests to complete the production; The sixth one-in-three vulcanized joint package (6) uses a glue-pouring mold comprising a left mold (61) and a right mold (62), wherein the left mold (61) and the right mold (62) are respectively provided with corresponding pin holes (63) at their corners for fastening to form a mold box by means of pins, wherein the mold box is provided with holes (64) for respectively passing the watertight optoelectronic composite cable (1), the power unit branch (3), the control unit branch (4) and the signal transmission unit branch (5), and a core cavity (65) for molding the one-in-three vulcanized joint package (6), and a flat pouring port (66) is connected to the top of the core cavity (65). 2. A method for preparing a watertight branched optoelectronic composite cable assembly according to claim 1, characterized in that the optical unit (11) is a stainless steel tube structure, and the tube contains 4 single-mode optical fibers. 3. The method for preparing a watertight branched optoelectronic composite cable assembly according to claim 1, characterized in that the power line (12) is a 4 ^mm2 power line, the conductor is a stranded copper wire, and the insulation layer is polyethylene. 4. The method for preparing a watertight branched optoelectronic composite cable assembly according to claim 1, characterized in that the control wire (13) is a 2 ^mm2 control wire, the conductor is a stranded copper wire, and the insulation layer is polyethylene. 5. The method for preparing a watertight branched optoelectronic composite cable assembly according to claim 1, characterized in that the signal line (14) is a 0.5 ^mm2 control line, the conductor is a single copper wire, and the insulation layer is polyethylene. 6. The method for preparing a watertight branched optoelectronic composite cable assembly according to claim 1, characterized in that the core filling (15) material is polyethylene. 7. The method for preparing a watertight branched optoelectronic composite cable assembly according to claim 1, characterized in that the outer sheath (16) of the composite cable is made of polyurethane material.