CN110853804A - Pre-branching cable and manufacturing method thereof - Google Patents

Pre-branching cable and manufacturing method thereof Download PDF

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Publication number
CN110853804A
CN110853804A CN201911214646.9A CN201911214646A CN110853804A CN 110853804 A CN110853804 A CN 110853804A CN 201911214646 A CN201911214646 A CN 201911214646A CN 110853804 A CN110853804 A CN 110853804A
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CN
China
Prior art keywords
cable
branch
conductor
connecting part
fitting
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Pending
Application number
CN201911214646.9A
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Chinese (zh)
Inventor
刘焱鑫
高天啸
张静
任帅
隋明辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHANGZHOU MARINE CABLE Co Ltd
Jiangsu Zhongli Group Co Ltd
Original Assignee
CHANGZHOU MARINE CABLE Co Ltd
Jiangsu Zhongli Group Co Ltd
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Application filed by CHANGZHOU MARINE CABLE Co Ltd, Jiangsu Zhongli Group Co Ltd filed Critical CHANGZHOU MARINE CABLE Co Ltd
Priority to CN201911214646.9A priority Critical patent/CN110853804A/en
Publication of CN110853804A publication Critical patent/CN110853804A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/021—Features relating to screening tape per se
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • 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
    • H01B7/009—Cables with built-in connecting points or with predetermined areas for making deviations
    • 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
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; 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
    • H01B7/17—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
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/022—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of longitudinal lapped tape-conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R3/00—Electrically-conductive connections not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R3/00—Electrically-conductive connections not otherwise provided for
    • H01R3/08—Electrically-conductive connections not otherwise provided for for making connection to a liquid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cable Accessories (AREA)

Abstract

The invention discloses a pre-branch cable, which is characterized in that: including trunk cables, branch cables, and connection splices. The trunk cable and the branch cable have the same structure and respectively comprise a cable conductor, a cable insulation layer, a cable shielding layer and a cable sheath layer. The cross-sectional area of the cable conductor of the branch cable is smaller than that of the main line cable. The connecting joint comprises a conductor connecting hardware fitting, a hardware fitting insulating layer, a hardware fitting shielding layer and a hardware fitting protecting sleeve layer. The branch cables are two or three, and each branch cable is fixedly connected and electrically connected with the main line cable through a connecting joint. The hardware fitting insulating layer of the connecting joint is connected with the cable insulating layer of each cable into a whole. And the hardware fitting shielding layer of the connecting joint is in overlapping joint with the cable shielding layer of each cable in a covering manner. The hardware fitting sheath layer of the connecting joint is connected with the cable sheath layer of each cable into a whole.

Description

Pre-branching cable and manufacturing method thereof
Technical Field
The invention belongs to the technical field of power cables, and particularly relates to a pre-branch cable used on a ship and a manufacturing method thereof.
Background
Power cables are widely used in various industries as important components for information and power energy transmission. Due to the limited space of the ship and the light weight of the ship, the laying of the line on the ship is more important. With the development of ships and warships tending to diversification and integration of functions, the application of the power cable in the ships and warships tends to diversification. The original laying mode is that corresponding lines are usually laid from a power supply to each device, the number of the lines is large, the laying workload is large, the laying is troublesome, the occupied space is saved, and the weight of a ship is increased. In view of space and weight saving, a pre-branch cable is usually adopted for laying, the pre-branch cable divides a main line into two paths to be respectively connected with corresponding equipment, namely, one main line is connected with a power supply, and then the main line is divided into two paths at a place close to two pieces of equipment and then is respectively connected with the corresponding equipment, so that the workload of laying the lines can be greatly reduced, and the using amount of the cable is reduced. The cable laying adopts a pre-branching cable mode to carry out overall layout connection, and is a development direction.
Disclosure of Invention
The invention aims to provide a pre-branch cable which is simple in structure and used on ships and a manufacturing method thereof.
The basic technical scheme for realizing the aim of the invention is that the pre-branch cable has the structural characteristics that: including trunk cables, branch cables, and connection splices. The trunk cable and the branch cable have the same structure and respectively comprise a cable conductor, a cable insulation layer, a cable shielding layer and a cable sheath layer. The cross-sectional area of the cable conductor of the branch cable is smaller than that of the main line cable. The connecting joint comprises a conductor connecting hardware fitting, a hardware fitting insulating layer, a hardware fitting shielding layer and a hardware fitting protecting sleeve layer. The branch cables are two or three, and each branch cable is fixedly connected and electrically connected with the main line cable through a connecting joint. The hardware fitting insulating layer of the connecting joint is connected with the cable insulating layer of each cable into a whole. And the hardware fitting shielding layer of the connecting joint is in overlapping joint with the cable shielding layer of each cable in a covering manner. The hardware fitting sheath layer of the connecting joint is connected with the cable sheath layer of each cable into a whole.
The technical scheme based on the basic technical scheme is as follows: the insulating layer of each cable is wrapped outside the cable conductor by adopting silicon rubber extrusion. The cable shielding layer is wrapped outside the cable insulating layer by adopting a metal shielding net or a metal shielding tape. The cable sheath layer is made of polyether polyurethane sheath material and is injected outside the cable shielding layer.
The technical scheme based on the corresponding technical scheme is that the number of the branch cables is two, the two branch cables are respectively called a first branch cable and a second branch cable, the conductor connecting hardware is a metal integrated piece, the surface of the conductor connecting hardware is polished and polished, the conductor connecting hardware comprises a main line connecting part, a first branch connecting part and a second branch connecting part, the main line connecting part, the first branch connecting part and the second branch connecting part are arranged in a Y shape in the same plane, an included angle α at the intersection of one ends of the first branch connecting part and one end of the second branch connecting part is 60, and radian processing is carried out at the intersection.
The technical scheme based on the corresponding technical scheme is that the two branch cables are respectively called a first branch cable and a second branch cable, the conductor connecting hardware fitting is a metal integrated piece, the surface of the conductor connecting hardware fitting is polished and polished, the conductor connecting hardware fitting comprises a main trunk line connecting part, a first branch connecting part and a second branch connecting part, the first branch connecting part and the second branch connecting part are arranged in a T shape in the same plane, an included angle α at the intersection of one ends of the first branch connecting part and the second branch connecting part is 180 degrees, and the main trunk line connecting part is vertically arranged in the middle of the first branch connecting part and the second branch connecting part.
The technical scheme based on the corresponding technical schemes is as follows: the branch cables have three, which are respectively called a first branch cable, a second branch cable and a third branch cable.
The conductor connecting hardware is a metal integrated piece, and the surface of the conductor connecting hardware is polished. The conductor connection fitting includes a trunk line connection portion, a first branch connection portion, a second branch connection portion, and a third branch connection portion. One end of the first branch connecting part, one end of the second branch connecting part and one end of the third branch connecting part are connected, and the other ends of the first branch connecting part, the second branch connecting part and the third branch connecting part are arranged in parallel. The first branch connecting part, the second branch connecting part and the third branch connecting part are distributed in a regular triangle shape. The trunk line connection portion is provided at an intersection of the first branch connection portion, the second branch connection portion, and the third branch connection portion. The mutual included angle of the intersection of the first branch connecting part, the second branch connecting part and the third branch connecting part is 120 degrees. The included angle of the intersection of the trunk line connecting part and the first branch connecting part, the intersection of the second branch connecting part and the intersection of the third branch connecting part are all 120 degrees. The third branch cable has the same structure as the first branch cable and the second branch cable.
The technical scheme based on the corresponding technical schemes is as follows: the trunk line connecting part is provided with a trunk line conductor mounting blind hole along the axial direction, the aperture of the trunk line conductor mounting blind hole corresponds to the conductor diameter of a trunk line cable, the wall thickness of the trunk line conductor mounting blind hole is 2-4.5 mm, and a cable conductor of the trunk line cable is fixed and electrically connected in the conductor mounting blind hole of the trunk line connecting part.
First branch connecting portion is equipped with first conductor installation blind hole along its axial, and the aperture of first conductor installation blind hole corresponds with the cable conductor's of first branch cable diameter, and the wall thickness of first conductor installation blind hole department is 2 to 4.5mm, and the cable conductor of first branch cable is fixed and the electricity is connected in the first conductor installation blind hole of first branch connecting portion.
The second branch connecting part is provided with a second conductor mounting blind hole along the axial direction, the diameter of the second conductor mounting blind hole corresponds to that of a cable conductor of the second branch cable, the wall thickness of the second conductor mounting blind hole is 2-4.5 mm, and the cable conductor of the second branch cable is fixed and electrically connected in the second conductor mounting blind hole of the second branch connecting part.
The technical scheme based on the corresponding technical schemes is as follows: the hardware fitting insulating layer is coated outside the conductor connecting hardware fitting by silicon rubber and is connected with the cable insulating layers of the trunk cable, the first branch cable and the second branch cable into a whole. The hardware fitting shielding layer is wrapped outside the hardware fitting insulating layer by adopting a metal shielding net or a metal shielding tape, and is in covering lap joint with the cable shielding layers of the trunk cable, the first branch cable and the second branch cable. The hardware fitting sheath layer is formed by injection molding of polyether polyurethane sheath materials outside the hardware fitting shielding layer and is connected with the cable sheath layers of the main trunk cable, the first branch cable and the second branch cable into a whole.
A method of making a pre-branch cable, comprising: comprises the following steps:
1) and sequentially stripping the cable sheath layer, the cable shielding layer and the cable insulating layer from the connecting end of the main line cable along the axial direction, and exposing the cable conductor. The cable conductor, the cable insulation layer, the cable shielding layer and the cable sheath layer are in a step shape.
The conductive paste is coated on the surfaces of the cable conductors of the trunk cable and then is inserted into the trunk conductor mounting blind holes of the trunk connecting part of the conductor connecting fitting, and then the trunk connecting part of the conductor connecting fitting and the cable conductors of the trunk cable are fixedly connected and electrically connected through mechanical integral compression. The mechanical integral compression uses tools such as hydraulic pliers and the like to apply radial pressure to the conductor connecting fitting and the conductor, and the conductor and the compressed part of the conductor connecting fitting are tightly and fixedly connected and form a conductive path by means of metal plastic deformation generated by the compressive stress.
2) And sequentially stripping the cable sheath layer, the cable shielding layer and the cable insulating layer from the connecting end of the first branch cable along the axial direction by adopting the same method of the trunk cable and the cable, and exposing the cable conductor. The cable conductor, the cable insulation layer, the cable shielding layer and the cable sheath layer are in a step shape. The surface of the cable conductor of the first branch cable is coated with the conductive paste and then is inserted into the first conductor mounting blind hole of the first branch connecting part, and then the first branch connecting part of the conductor connecting fitting is fixedly connected and electrically connected with the cable conductor of the first branch cable through mechanical integral compression.
3) And sequentially stripping the cable sheath layer, the cable shielding layer and the cable insulating layer from the connecting end of the second branch cable along the axial direction by adopting the same method of the trunk cable and the cable, and exposing the cable conductor, wherein the cable insulating layer, the cable shielding layer and the cable sheath layer are in a step shape. And coating conductive paste on the surface of the cable conductor of the second branch cable, inserting the conductive paste into the second conductor mounting blind hole of the second branch connecting part, and fixedly connecting and electrically connecting the second branch connecting part of the conductor connecting fitting with the cable conductor of the second branch cable through mechanical integral compression.
4) After the fixed connection of the corresponding cable conductors of the trunk cable, the first branch cable and the second branch cable and the conductor connecting fitting is completed, the insulating layer of the conductor connecting fitting is coated and manufactured by adopting two-component liquid silica gel casting room-temperature vulcanization, and the corresponding parts of the cable conductors and the cable insulating layer are coated during casting, so that the fitting insulating layer of the conductor connecting fitting and the cable insulating layer of each cable conductor are connected into a whole.
5) After the insulating layer is manufactured, a metal shielding net or a metal shielding belt is wrapped outside the main trunk cable, the cable insulating layers of the first branch cable and the second branch cable of the corresponding parts and the hardware fitting insulating layer of the conductor connecting hardware fitting, the hardware fitting shielding layer of the conductor connecting hardware fitting and the corresponding parts of the main trunk cable, the cable shielding layers of the first branch cable and the second branch cable are overlapped in a covering mode, and the overlapped parts are bound and fixed through metal binding belts after the wrapping is finished.
6) The polyether polyurethane sheathing material is injected outside the fitting shielding layer of the conductor connecting fitting and the cable shielding layers of the main line cable, the first branch cable and the second branch cable of corresponding parts, so that the cable sheathing layers of the main line cable, the first branch cable and the second branch cable and the fitting sheathing layer of the conductor connecting fitting are connected into a whole.
The invention has the positive effects that: (1) the conductor connecting fitting of the pre-branch cable connecting joint for the ship adopts an electrical copper die-casting integrated piece, and the surface of the conductor connecting fitting is polished and polished, so that point discharge can be eliminated. The first branch connecting part and the second branch connecting part of the conductor connecting hardware fitting are subjected to radian processing at the intersection, so that electric field distortion can be avoided.
(2) The contact surfaces of the conductor connecting hardware fitting of the pre-branch cable connecting joint for the ship, the main line cable and the conductors of the branch cables are coated with the conductive factice, so that the traditional tin filling process is replaced, and the contact resistance can be reduced.
(3) The cable conductor and the conductor connecting fitting of the pre-branching cable connecting joint for the ship are fixedly connected and electrically connected by adopting mechanical integral compression, so that an electrical conduction interface is obtained between the cable conductor and the conductor connecting fitting, the mechanical integral compression and plastic deformation are uniform, the electric field distortion caused by local point pressure is avoided, and the integral tensile strength reduction rate after the fixed connection is not more than 20% of the original value of the tensile strength of the conductor.
(4) The hardware fitting shielding layer of the connecting joint is wrapped outside the hardware fitting insulating layer by adopting the metal shielding mesh belt, and each cable is connected with the hardware fitting shielding layer of the connecting joint to form integral shielding, so that the requirement of electromagnetic compatibility is met, and the interference to surrounding equipment can be reduced.
(5) The sheath layer is injected outside the shielding layer by adopting polyether polyurethane sheath material, has good strength, good corrosion resistance and moisture resistance, and is beneficial to prolonging the service life. The sheath layer is halogen-free, can not release harmful gas when meeting fire, and the safety in utilization is high.
(6) The manufacturing method of the pre-branch cable for the ship is simple to operate, the trunk line is divided into two or three paths, repeated laying of the trunk line is reduced, the space is greatly saved, and the efficiency is improved. The trunk cable and the branch cable have good mechanical tensile strength after being connected through the conductor connecting hardware fitting. The contact surfaces of the conductor connecting hardware fitting and the conductors of the trunk cable and the branch cable are coated with conductive factice, so that the contact resistance is favorably reduced.
(7) The conductor connecting hardware fitting of the connecting joint of the pre-branching cable for the ship has various structures, can meet the requirements of different occasions, and has strong adaptability and wide application range.
Drawings
Fig. 1 is a schematic structural view of a pre-branch cable of the present invention.
Fig. 2 is a schematic structural diagram of the conductor connecting hardware in fig. 1.
Fig. 3 is a schematic structural diagram of the main line cable after the cable sheath layer, the cable shielding layer and the cable insulating layer are peeled off before connection, and the cable conductor, the cable insulating layer, the cable shielding layer and the cable sheath layer are in a step shape from bottom to top.
Fig. 4 is a schematic structural diagram of another conductor connection fitting of the pre-branch cable according to the present invention.
Fig. 5 is a schematic structural diagram of a conductor connecting fitting when the pre-branch cable of the present invention has three branch cables.
Fig. 6 is a top view of fig. 5.
Fig. 7 is a bottom view of fig. 5.
Fig. 8 is a schematic view as viewed from the upper right front of fig. 5.
Fig. 9 is a schematic view when viewed from the left front lower side of fig. 5.
The reference numbers in the above figures are as follows:
a conductor connecting fitting 1, a main line connecting part 11, a main line conductor mounting blind hole 11-1,
a first branch connection 12, a first conductor mounting blind hole 12-1,
a second branch connecting portion 13, a second conductor mounting blind hole 13-1,
a third branch connection portion 14, a third conductor mounting blind hole 14-1,
a hardware fitting insulating layer 2, a hardware fitting shielding layer 3, a hardware fitting jacket layer 4,
a trunk cable 10, a first branch cable 10a, a second branch cable 10b,
10-1 parts of cable conductors, 10-2 parts of cable insulating layers, 10-3 parts of cable shielding layers and 10-4 parts of cable sheath layers.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
(example 1)
Referring to fig. 1-3, the pre-branch cable of the present invention includes a trunk cable 10, a branch cable, and a connection joint. The connecting joint comprises a conductor connecting hardware fitting 1, a hardware fitting insulating layer 2, a hardware fitting shielding layer 3 and a hardware fitting sheath layer 4. There are two branch cables, which are referred to as the first branch cable 10a and the second branch cable 10b, respectively. The first branch cable 10a and the second branch cable 10b are fixedly connected and electrically connected to the trunk cable 10 by a connection joint.
The main trunk cable 10, the first branch cable 10a and the second branch cable 10b are identical in structure and respectively comprise a cable conductor 10-1, a cable insulation layer 10-2, a cable shielding layer 10-3 and a cable sheath layer 10-4. The cable conductors 10-1 of the first branch cable 10a and the second branch cable 10b each have a smaller cross-sectional area than the cross-sectional area of the cable conductor 10-1 of the trunk cable 10. The cable conductors 10-1 of the first branch cable 10a and the second branch cable 10b have the same cross-sectional area.
The cable insulating layer 10-2 is wrapped outside the cable conductor 10-1 by adopting silicon rubber extrusion. The cable shielding layer 10-3 is wrapped outside the cable insulating layer 10-2 by adopting a metal shielding net or a metal shielding tape. The cable sheath layer 10-4 is formed by injecting a polyether polyurethane sheath material outside the cable shielding layer 10-3.
Referring to fig. 1 to 3, the conductor connector 1 is a metal integrated member, the surface of which is polished and polished, and the conductor connector 1 in this embodiment is an electrical copper die-cast integrated member, the conductor connector 1 includes a trunk line connector 11 and two or three branch connectors, which are referred to as a first branch connector 12 and a second branch connector 13, the trunk line connector 11, the first branch connector 12 and the second branch connector 13 are disposed in a Y-shape in the same plane, an included angle α at an intersection of one ends of the first branch connector 12 and the second branch connector 13 is 60 degrees, and the intersection is processed by a radian, and the other ends of the first branch connector 12 and the second branch connector 13 are disposed in parallel to each other.
The trunk line connecting part 11 is provided with a trunk line conductor mounting blind hole 11-1 along the axial direction thereof, the aperture of the trunk line conductor mounting blind hole 11-1 corresponds to the conductor diameter of a trunk line cable, and the wall thickness of the trunk line conductor mounting blind hole 11-1 is 2-4.5 mm, 4mm in the embodiment. The cable conductor 10-1 of the trunk cable 10 is fixed and electrically connected in the conductor mounting blind hole 11-1 of the trunk connecting portion 11.
The first branch connecting portion 12 is provided with a first conductor mounting blind hole 12-1 along the axial direction thereof, the aperture of the first conductor mounting blind hole 12-1 corresponds to the diameter of the cable conductor 10-1 of the first branch cable 10a, and the wall thickness of the first conductor mounting blind hole 12-1 is 2 to 4.5mm, 4mm in this embodiment. The cable conductor 10-1 of the first branch cable 10a is fixed and electrically connected in the first conductor mounting blind hole 12-1 of the first branch connecting portion 12.
The second branch connecting portion 13 is provided with a second conductor mounting blind hole 13-1 along the axial direction thereof, the aperture of the second conductor mounting blind hole 13-1 corresponds to the diameter of the cable conductor 10-1 of the second branch cable 10b, and the wall thickness of the second conductor mounting blind hole 13-1 is 2 to 4.5mm, 4mm in this embodiment. The cable conductor 10-1 of the second branch cable 10b is fixed and electrically connected in the second conductor mounting blind hole 13-1 of the second branch connecting portion 13.
The hardware fitting insulating layer 2 is coated outside the conductor connecting hardware fitting 1 by silicon rubber and is connected with the cable insulating layers 10-2 of the trunk cable 10, the first branch cable 10a and the second branch cable 10b into a whole. The hardware shielding layer 3 is wrapped outside the hardware insulating layer 2 by adopting a metal shielding mesh belt, and is in covering lap joint with the cable shielding layers 10-3 of the trunk cable 10, the first branch cable 10a and the second branch cable 10 b. The hardware fitting sheath layer 4 is formed by injection molding of polyether polyurethane sheath materials outside the hardware fitting shielding layer 3 and is connected with the cable sheath layers 10-4 of the trunk cable 10, the first branch cable 10a and the second branch cable 10b into a whole.
The manufacturing method of the pre-branch cable comprises the following steps:
(1) the cable sheath layer 10-4, the cable shielding layer 10-3 and the cable insulating layer 10-2 are sequentially stripped from the connecting end of the trunk cable 10 along the axial direction, the cable conductor 10-1 is exposed, and the cable conductor 10-1, the cable insulating layer 10-2, the cable shielding layer 10-3 and the cable sheath layer 10-4 are in a step shape.
After coating conductive grease on the surfaces of the cable conductors 10-1 of the trunk cable, inserting the cable conductors into the trunk conductor mounting blind holes 11-1 of the trunk connecting part 11 of the conductor connecting fitting 1, and then fixedly connecting and electrically connecting the trunk connecting part 11 of the conductor connecting fitting 1 with the cable conductors 10-1 of the trunk cable 10 through mechanical integral compression. The mechanical integral compression uses tools such as hydraulic pliers and the like to apply radial pressure to the conductor connecting fitting and the conductor, and the conductor and the compressed part of the conductor connecting fitting are tightly and fixedly connected and form a conductive path by means of metal plastic deformation generated by the compressive stress.
(2) The cable sheath layer, the cable shielding layer and the cable insulating layer are sequentially stripped from the connecting end of the first branch cable 10a along the axial direction by adopting the same method of the trunk cable, and the cable conductor, the cable insulating layer, the cable shielding layer and the cable sheath layer are in a step shape, and the cable conductor, the cable shielding layer and the cable sheath layer are exposed. After coating conductive paste on the surface of the cable conductor of the first branch cable 10a, inserting the coated conductive paste into the first conductor mounting blind hole 12-1 of the first branch connecting part 12, and then fixedly and electrically connecting the first branch connecting part 12 of the conductor connecting fitting 1 with the cable conductor of the first branch cable 10a through mechanical overall compression.
(3) And sequentially stripping the cable sheath layer, the cable shielding layer and the cable insulating layer from the connecting end of the second branch cable 10b along the axial direction by adopting the same method of the trunk cable and exposing the cable conductor, wherein the cable conductor, the cable insulating layer, the cable shielding layer and the cable sheath layer are in a step shape. After coating conductive paste on the surface of the cable conductor of the second branch cable 10b, inserting the coated conductive paste into the second conductor mounting blind hole 13-1 of the second branch connecting part 13, and then fixedly and electrically connecting the second branch connecting part 13 of the conductor connecting fitting 1 with the cable conductor of the second branch cable 10b through mechanical overall compression.
(4) After the fixed connection of the corresponding cable conductors of the trunk cable, the first branch cable and the second branch cable and the conductor connecting fitting 1 is completed, the insulating layer of the conductor connecting fitting 1 is coated and manufactured by adopting two-component liquid silica gel casting room temperature vulcanization, and the corresponding parts of the cable conductors and the cable insulating layers are coated during casting, so that the fitting insulating layer 2 of the conductor connecting fitting 1 and the cable insulating layers of the cable conductors are connected into a whole.
(5) After the insulating layer is manufactured, a metal shielding net or a metal shielding belt is adopted to wrap the main trunk cable, the cable insulating layer of the first branch cable and the second branch cable and the fitting insulating layer 2 of the conductor connecting fitting 1 at the corresponding parts, the fitting shielding layer 3 of the conductor connecting fitting 1 and the corresponding parts of the main trunk cable, the cable shielding layer of the first branch cable and the cable shielding layer of the second branch cable are overlapped in a covering mode, and the overlapped part is bound and fixed by a metal binding belt after the wrapping is finished.
(6) The polyether polyurethane sheathing material is injected outside the metal fitting shielding layer 3 of the conductor connecting fitting 1, and outside the cable shielding layers of the main line cable, the first branch cable and the second branch cable of the corresponding parts, so that the cable sheathing layers of the main line cable, the first branch cable and the second branch cable and the metal fitting sheathing layer 4 of the conductor connecting fitting 1 are connected into a whole.
(example 2)
Referring to fig. 4, the rest of the present embodiment is the same as embodiment 1, except that the trunk line connecting portion 11, the first branch connecting portion 12, and the second branch connecting portion 13 of the conductor connection fitting are arranged in a T shape in the same plane, the first branch connecting portion 12 and the second branch connecting portion 13 are arranged linearly, that is, an included angle α at the intersection of one ends of the first branch connecting portion 12 and the second branch connecting portion 13 is 180 degrees, and the trunk line connecting portion 11 is vertically arranged on the middle portion of the first branch connecting portion 12 and the second branch connecting portion 13.
(example 3)
Referring to fig. 5 to 9, the rest of the present embodiment is the same as embodiment 1, except that: and a third branch cable having the same structure as the first branch cable 10a and the second branch cable 10b, and having a cable conductor 10-1 having a sectional area equal to that of the cable conductor 10-1 of the first branch cable 10 a.
The conductor connection fitting further includes a third branch connection portion 14. One ends of the first branch connecting portion 12, the second branch connecting portion 13, and the third branch connecting portion 14 are connected, and the other ends are arranged in parallel to each other. The first branch connection portion 12, the second branch connection portion 13, and the third branch connection portion 14 are distributed in a regular triangle. The trunk line connection portion 11 is provided at the intersection of the first branch connection portion 12, the second branch connection portion 13, and the third branch connection portion 14. The intersection of the first branch connection portion 12, the second branch connection portion 13 and the third branch connection portion 14 forms an angle of 120 degrees with respect to each other. The main trunk line connecting portion 11 and the intersections of the first branch connecting portion 12, the second branch connecting portion 13 and the third branch connecting portion 14 are all at an angle of 120 degrees to 160 degrees, 150 degrees in this embodiment.
The third branch connecting part 14 is provided with a third conductor mounting blind hole 14-1 along the axial direction, the aperture of the third conductor mounting blind hole 14-1 corresponds to the diameter of the cable conductor of the third branch cable, and the wall thickness of the third conductor mounting blind hole 14-1 is 2-4.5 mm, 4mm in the embodiment. The cable conductor of the third branch cable is fixed and electrically connected in the third conductor mounting blind hole 14-1 of the third branch connection portion 14.
The hardware fitting insulating layer 2 is coated outside the conductor connecting hardware fitting 1 by silicon rubber, and is connected with the trunk cable 10, the first branch cable 10a, the second branch cable 10b and the cable insulating layer 10-2 of the third branch cable into a whole. The hardware shielding layer 3 is wrapped outside the hardware insulating layer 2 by adopting a metal shielding mesh belt, and is in covering lap joint with the cable shielding layers 10-3 of the trunk cable 10, the first branch cable 10a, the second branch cable 10b and the third branch cable. The hardware fitting sheath layer 4 is formed by injection molding of polyether polyurethane sheath materials outside the hardware fitting shielding layer 3 and is connected with the trunk cable 10, the first branch cable 10a, the second branch cable 10b and the cable sheath layer 10-4 of the third branch cable into a whole.
The above embodiments are provided for illustrative purposes only and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and in the course of practical application, can make corresponding modifications according to the above embodiments, and therefore all equivalent technical solutions should fall within the scope of protection of the present invention.

Claims (8)

1. A pre-branch cable, comprising: the system comprises a trunk cable, branch cables and a connecting joint; the trunk cable and the branch cable have the same structure and respectively comprise a cable conductor, a cable insulating layer, a cable shielding layer and a cable sheath layer; the sectional area of the cable conductor of the branch cable is smaller than that of the cable conductor of the trunk cable; the connecting joint comprises a conductor connecting hardware fitting, a hardware fitting insulating layer, a hardware fitting shielding layer and a hardware fitting sheath layer; the branch cables are two or three, and each branch cable is fixedly connected and electrically connected with the main line cable through a connecting joint; the hardware fitting insulating layer of the connecting joint is connected with the cable insulating layer of each cable into a whole; the hardware fitting shielding layer of the connecting joint is in overlap joint with the cable shielding layer of each cable in a covering manner; the hardware fitting sheath layer of the connecting joint is connected with the cable sheath layer of each cable into a whole.
2. The pre-branch cable of claim 1, wherein: the insulating layer of each cable is wrapped outside the cable conductor by adopting silicon rubber; the cable shielding layer is wrapped outside the cable insulating layer by adopting a metal shielding net or a metal shielding tape; the cable sheath layer is made of polyether polyurethane sheath material and is injected outside the cable shielding layer.
3. The pre-branch cable according to claim 1, wherein the number of the branch cables is two, the two branch cables are respectively called a first branch cable and a second branch cable, the conductor connecting fitting is a metal integrated piece, the surface of the conductor connecting fitting is polished and polished, the conductor connecting fitting comprises a trunk line connecting part, a first branch connecting part and a second branch connecting part, the trunk line connecting part, the first branch connecting part and the second branch connecting part are arranged in a Y shape in the same plane, an included angle α at the intersection of one ends of the first branch connecting part and one end of the second branch connecting part is 60, and radian processing is performed at the intersection.
4. The pre-branch cable according to claim 1, wherein the number of the branch cables is two, the two branch cables are respectively called a first branch cable and a second branch cable, the conductor connecting fitting is a metal integrated piece, the surface of the conductor connecting fitting is polished and polished, the conductor connecting fitting comprises a trunk line connecting part, a first branch connecting part and a second branch connecting part, the first branch connecting part and the second branch connecting part are arranged in a T shape in the same plane, an included angle α at the intersection of one ends of the first branch connecting part and the second branch connecting part is 180 degrees, and the trunk line connecting part is vertically arranged in the middle of the first branch connecting part and the second branch connecting part.
5. The pre-branch cable of claim 1, wherein: the branch cables are three, and the three branch cables are respectively called a first branch cable, a second branch cable and a third branch cable;
the conductor connecting hardware fitting is a metal integrated piece, and the surface of the conductor connecting hardware fitting is polished; the conductor connecting hardware comprises a main line connecting part, a first branch connecting part, a second branch connecting part and a third branch connecting part; one ends of the first branch connecting part, the second branch connecting part and the third branch connecting part are connected, and the other ends are arranged in parallel; the first branch connecting part, the second branch connecting part and the third branch connecting part are distributed in a regular triangle; the trunk line connecting part is arranged at the intersection of the first branch connecting part, the second branch connecting part and the third branch connecting part; the included angle among the intersection positions of the first branch connecting part, the second branch connecting part and the third branch connecting part is 120 degrees; the included angles of the intersection positions of the main trunk line connecting part and the first branch connecting part, the intersection positions of the second branch connecting part and the intersection positions of the third branch connecting part are all 120-160 degrees; the third branch cable has the same structure as the first branch cable and the second branch cable.
6. The pre-branch cable according to claim 3 or 4, wherein: the trunk line connecting part is provided with a trunk line conductor mounting blind hole along the axial direction, the aperture of the trunk line conductor mounting blind hole corresponds to the diameter of a conductor of a trunk line cable, the wall thickness of the trunk line conductor mounting blind hole is 2-4.5 mm, and a cable conductor of the trunk line cable is fixed and electrically connected in the conductor mounting blind hole of the trunk line connecting part;
the first branch connecting part is provided with a first conductor mounting blind hole along the axial direction, the aperture of the first conductor mounting blind hole corresponds to the diameter of a cable conductor of the first branch cable, the wall thickness of the first conductor mounting blind hole is 2-4.5 mm, and the cable conductor of the first branch cable is fixed and electrically connected in the first conductor mounting blind hole of the first branch connecting part;
the second branch connecting part is provided with a second conductor mounting blind hole along the axial direction, the diameter of the second conductor mounting blind hole corresponds to that of a cable conductor of the second branch cable, the wall thickness of the second conductor mounting blind hole is 2-4.5 mm, and the cable conductor of the second branch cable is fixed and electrically connected in the second conductor mounting blind hole of the second branch connecting part.
7. The pre-branch cable of claim 5, wherein: the hardware fitting insulating layer is coated outside the conductor connecting hardware fitting by silicon rubber and is connected with the cable insulating layers of the trunk cable, the first branch cable and the second branch cable into a whole; the hardware shielding layer is wrapped outside the hardware insulating layer by adopting a metal shielding net or a metal shielding tape and is in covering lap joint with the cable shielding layers of the trunk cable, the first branch cable and the second branch cable; the hardware fitting sheath layer is formed by injection molding of polyether polyurethane sheath materials outside the hardware fitting shielding layer and is connected with the cable sheath layers of the main trunk cable, the first branch cable and the second branch cable into a whole.
8. A method of making a pre-branch cable, comprising: comprises the following steps:
1) sequentially stripping a cable sheath layer, a cable shielding layer and a cable insulating layer from the connecting end of the main line cable along the axial direction, and exposing a cable conductor; the cable conductor, the cable insulating layer, the cable shielding layer and the cable sheath layer are in a step shape;
coating conductive factice on the surfaces of cable conductors of the trunk cable, inserting the conductive factice into a trunk conductor mounting blind hole of a trunk connecting part of a conductor connecting fitting, and then fixedly connecting and electrically connecting the trunk connecting part of the conductor connecting fitting with the cable conductors of the trunk cable through mechanical integral compression; the mechanical integral compression uses tools such as hydraulic pliers and the like to apply radial pressure to the conductor connecting fitting and the conductor, and the conductor and the compressed part of the conductor connecting fitting are tightly and fixedly connected to form a conductive path by means of metal plastic deformation generated by the compressive stress;
2) sequentially stripping a cable sheath layer, a cable shielding layer and a cable insulating layer from the connecting end of the first branch cable along the axial direction by adopting the same method of the trunk cable and the cable, and exposing a cable conductor; the cable conductor, the cable insulating layer, the cable shielding layer and the cable sheath layer are in a step shape; coating conductive factice on the surface of a cable conductor of a first branch cable, inserting the conductive factice into a first conductor mounting blind hole of a first branch connecting part, and then fixedly connecting and electrically connecting the first branch connecting part of the conductor connecting hardware fitting with the cable conductor of the first branch cable through mechanical overall compression;
3) sequentially stripping a cable sheath layer, a cable shielding layer and a cable insulating layer from the connecting end of the second branch cable along the axial direction by adopting the same method of the trunk cable and the cable, and exposing the cable conductor, wherein the cable conductor, the cable insulating layer, the cable shielding layer and the cable sheath layer are in a step shape; coating conductive paste on the surface of a cable conductor of a second branch cable, inserting the conductive paste into a second conductor mounting blind hole of a second branch connecting part, and fixedly and electrically connecting the second branch connecting part of the conductor connecting fitting with the cable conductor of the second branch cable through mechanical overall compression;
4) after the fixed connection of the corresponding cable conductors of the trunk cable, the first branch cable and the second branch cable and the conductor connecting fitting is completed, the insulating layer of the conductor connecting fitting is coated and manufactured by adopting double-component liquid silica gel casting room-temperature vulcanization, and the corresponding parts of the cable conductors and the cable insulating layers are coated during casting, so that the fitting insulating layers of the conductor connecting fitting and the cable insulating layers of the cable conductors are connected into a whole;
5) after the insulating layer is manufactured, a metal shielding net or a metal shielding tape is wrapped outside the main line cable, the cable insulating layers of the first branch cable and the second branch cable of the corresponding parts and the hardware insulating layer of the conductor connecting hardware, the hardware shielding layer of the conductor connecting hardware is overlapped with the corresponding parts of the cable shielding layers of the main line cable, the first branch cable and the second branch cable in a covering mode, and after the wrapping is finished, the overlapping parts are bound and fixed through metal binding tapes;
6) the polyether polyurethane sheathing material is injected outside the fitting shielding layer of the conductor connecting fitting and the cable shielding layers of the main line cable, the first branch cable and the second branch cable of corresponding parts, so that the cable sheathing layers of the main line cable, the first branch cable and the second branch cable and the fitting sheathing layer of the conductor connecting fitting are connected into a whole.
CN201911214646.9A 2019-12-02 2019-12-02 Pre-branching cable and manufacturing method thereof Pending CN110853804A (en)

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CN201911214646.9A CN110853804A (en) 2019-12-02 2019-12-02 Pre-branching cable and manufacturing method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112712919A (en) * 2020-12-21 2021-04-27 深圳金信诺高新技术股份有限公司 Shielded wire harness and method for producing shielded wire harness

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112712919A (en) * 2020-12-21 2021-04-27 深圳金信诺高新技术股份有限公司 Shielded wire harness and method for producing shielded wire harness

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