CN211907077U

CN211907077U - Electromagnetic compatible cable for ships

Info

Publication number: CN211907077U
Application number: CN202020793581.XU
Authority: CN
Inventors: 刘焱鑫; 魏述花; 苑国梁
Original assignee: Changzhou Marine Cable Co ltd; Jiangsu Zhongli Group Co Ltd
Current assignee: Changzhou Marine Cable Co ltd; Jiangsu Zhongli Group Co Ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-11-10
Anticipated expiration: 2030-05-13

Abstract

The utility model discloses a naval vessel is with electromagnetic compatibility cable, its main points are: including principal wire core, ground wire, first around covering, inner liner, shielding layer and oversheath. The main wire core has 3. Drag 1 ground sinle silk stranding behind 3 main sinle silks transposition, adopt the plastic-aluminum area to wrap outside 3 main sinle silks and 1 ground sinle silk of stranding behind the stranding to form first covering around, the aluminium foil face in the plastic-aluminum area is inside, takes the lid rate 25% around the package. The inner liner is extruded outside the first wrapping layer by adopting a halogen-free material. The shielding layer includes a first shielding layer and a second shielding layer. The first shielding layer is wrapped outside the lining layer by adopting a copper-plastic tape, the copper foil faces outwards, and the covering rate is not less than 25%. The second shielding layer is woven outside the first shielding layer by adopting a tinned copper wire. The tinned copper wire of the second shielding layer is in contact with the copper foil surface of the copper-plastic belt of the first shielding layer. The outer sheath is extruded outside the shielding layer by adopting low-smoke halogen-free flame-retardant polyolefin type material.

Description

Electromagnetic compatible cable for ships

Technical Field

The utility model relates to a power cable technical field, concretely relates to naval vessel is with electromagnetic compatibility cable.

Background

The ship industry is strategic engineering of national key development, and the next decade is a key period of development of the ship industry in China. Electromagnetic Compatibility (EMC) refers to the ability of a device or system to perform satisfactorily in its Electromagnetic environment without intolerable Electromagnetic disturbance to any device in its environment. With the rapid development of science and technology and the continuous improvement of automation degree, the automation and intellectualization level of ships is higher and higher. Electronic equipment on ships is more and more, and due to the limited space on the ships, a plurality of cables are often laid in a narrow space, so that higher requirements on electromagnetic compatibility of the cables are provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, the better electromagnetic compatibility cable of warship for electromagnetic compatibility.

Realize the utility model discloses the basic technical scheme of purpose is: the utility model provides a naval vessel is with electromagnetic compatibility cable which the structural feature is: including principal wire core, ground wire, first around covering, inner liner, shielding layer and oversheath. The main wire core has 3. The ground wire core comprises a ground wire core conductor and a ground wire core insulating layer. The ground wire core insulating layer is extruded outside the ground wire core conductor by adopting an irradiation cross-linked polyolefin material. Drag 1 ground sinle silk stranding behind 3 main sinle silks transposition, adopt the plastic-aluminum area to wrap outside 3 main sinle silks and 1 ground sinle silk of stranding behind the stranding to form first covering around, the aluminium foil face in the plastic-aluminum area is inside, takes the lid rate 25% around the package. The inner liner is extruded outside the first wrapping layer by adopting a halogen-free material. The shielding layer includes a first shielding layer and a second shielding layer. The first shielding layer is wrapped outside the lining layer by adopting a copper-plastic tape, the copper foil faces outwards, and the covering rate is not less than 25%. The second shielding layer is woven outside the first shielding layer by adopting a tinned copper wire. The tinned copper wire of the second shielding layer is in contact with the copper foil surface of the copper-plastic belt of the first shielding layer. The outer sheath is extruded outside the shielding layer by adopting low-smoke halogen-free flame-retardant polyolefin type material.

The technical scheme based on the basic technical scheme is as follows: the 3 main wire cores have the same structure and respectively comprise a main wire core conductor, a main wire core insulating layer and a main wire core wrapping layer. The main wire core conductor is formed by twisting 5 types of soft conductor bundles and twisting in the same direction. The main wire core insulating layer is extruded outside the main wire core conductor by adopting an irradiation cross-linked polyolefin material. The main wire core wrapping layer is wrapped outside the main wire core insulating layer through an aluminum-plastic tape, the aluminum foil surface of the aluminum-plastic tape is wrapped outwards, and the wrapping and covering rate is not less than 25%. The earth core contacts with the aluminium foil face of the corresponding main core around the covering, and the aluminium foil face of the main core around the covering contacts with the first aluminium foil face around the covering.

The utility model discloses following beneficial effect has: (1) the utility model discloses a naval vessel is with electromagnetic compatibility cable simple structure, electromagnetic compatibility is good, and power transmission is stable. The shielding layer is provided with two layers, the two layers of shielding layers are woven by adopting copper strips to wrap and add copper wires to form a combined shielding structure, the shielding cable with the structure can resist electromagnetic induction, poor grounding and power line conduction interference, the inductance is reduced, and the induced electromotive force is prevented from being too large. The double shielding protection minimizes interference with surrounding precision instruments.

(2) The utility model discloses a two-layer shielding layer of naval vessel is with electromagnetic compatibility cable adopts the copper strips to weave around the package and add the copper wire and form combined shielding structure, can also play mechanical protection effect when playing the shielding effect.

(3) The utility model discloses a drag 1 ground core stranding behind the 3 main core transposition of naval vessel for electromagnetic compatibility cable, at the stranding outer package one deck plastic-aluminum area of winding, the aluminium foil face inwards, ground wire and aluminium foil face contact, protection cable when taking place the insulation breakdown trouble, fault current passes through ground core ground connection.

(4) The utility model discloses a marine for electromagnetic compatibility cable's main line core adopts the plastic-aluminum area around the covering around the package around the covering, forms the shielding, can effectually restrict the strong electric field that the cable produced at the main line core around the covering in situ, through the main line core around covering ground connection, can not produce forceful electric power interference to circuit and instrument on every side.

(5) The utility model discloses an insulating radiation cross-linking polyolefin material that the dielectric constant is less (dielectric constant 2.3) of main line core of naval vessel electromagnetic compatibility cable adopts, can guarantee the long-term stability of insulating properties, and cross-linking polyolefin material has workable moreover, and mechanical properties reaches advantages such as fire-retardant well.

(6) The utility model discloses a marine electromagnetic compatibility cable's restrictive coating adopts low smoke and zero halogen fire-retardant polyolefin type material, and the sheath material satisfies MIL-DTL-24643/53-2002 "3000V power cable" performance requirement, and cable sheathing has excellent resistant oil, low smoke, does not have halogen, performance such as fire-retardant.

Drawings

Fig. 1 is the structure schematic diagram of the electromagnetic compatible cable for ships and warships of the utility model.

The reference numbers in the drawings are:

a main wire core 1, a main wire core conductor 1-1, a main wire core insulating layer 1-2, a main wire core wrapping layer 1-3,

a ground wire 2, a ground wire core conductor 2-1, a ground wire core insulating layer 2-2,

the first wrapping layer 3 is wrapped on the first wrapping layer,

the inner layer 4 is formed by a layer of,

a shielding layer 5, a first shielding layer 5-1, a second shielding layer 5-2,

an outer sheath 6.

Detailed Description

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

It should be understood that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the positional relationships illustrated in the drawings, and are used only for convenience in describing the present invention or simplifying the description, but do not indicate that a particular orientation must be provided.

(example 1)

Referring to fig. 1, the electromagnetic compatible cable for ships of the invention comprises a main wire core 1, a ground wire 2, a first wrapping layer 3, an inner liner layer 4, a shielding layer 5 and an outer sheath 6.

The main wire core 1 comprises 3 main wire cores 1, wherein the 3 main wire cores 1 are identical in structure and respectively comprise a main wire core conductor 1-1, a main wire core insulating layer 1-2 and a main wire core wrapping layer 1-3.

The main core conductor 1-1 is stranded in the same direction by the class 5 soft conductor bundle strand and the multiple strand, having the conductor cross-sectional area of 10mm to 185mm, the embodiment has the conductor cross-sectional area of 185 mm.

The main wire core insulating layer 1-2 is extruded outside the main wire core conductor 1-1 by adopting an irradiation cross-linked polyolefin material with the dielectric constant of 2.3. Irradiation dose 350KGY, thermal extension 30% +/-5%.

The main wire core wrapping layer 1-3 is wrapped outside the main wire core insulating layer 1-2 through an aluminum-plastic tape, the aluminum foil surface of the aluminum-plastic tape is outward wrapped flatly without folds, and the wrapping and covering rate is not less than 25%.

The ground core 2 comprises a ground core conductor 2-1 and a ground core insulating layer 2-2. The ground core conductor 2-1 is a conductor conforming to IEC60228 class 5, and the sectional area of the ground core conductor is not greater than 1/2 of the sectional area of a single main core conductor, in this embodiment, 35mm is adopted, and the ground core insulating layer 2-2 is extruded outside the ground core conductor 2-1 by using an irradiation cross-linked polyolefin material with a dielectric constant of 2.3.

Drag 1 ground sinle silk 2 stranding behind 3 main sinle silks 1 transposition, adopt the aluminium-plastic tape to wrap outside 3

main sinle silks

1 and 1 ground sinle silk 2 of stranding behind the stranding to form first covering 3, the aluminium foil in aluminium-plastic tape is inside facing, takes the lid rate 25% around the package. The ground wire core 2 is in contact with the aluminum foil surface of the corresponding main wire core wrapping layer 1-3 of the main wire core 1, and the aluminum foil surface of the main wire core wrapping layer 1-3 is in contact with the aluminum foil surface of the first wrapping layer 3.

The inside liner 4 adopts halogen-free material to extrude outside wrapping 3, and this embodiment adopts HTPF9001 halogen-free material.

The shield layer 5 includes a first shield layer 5-1 and a second shield layer 5-2. The first shielding layer 5-1 is wound and wrapped outside the lining layer 4 by adopting a copper-plastic tape, the copper foil faces outwards, and the overlapping rate is not less than 25%. The second shielding layer 5-2 is woven outside the first shielding layer 5-1 by adopting tinned copper wires, the weaving density is 82%, and the tinned copper wires of the second shielding layer 5-2 are in contact with the copper foil surface of the copper-plastic belt of the first shielding layer 5-1.

The outer sheath 6 is extruded outside the shielding layer 5 by adopting low-smoke halogen-free flame-retardant polyolefin type material.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a naval vessel is with electromagnetic compatibility cable which characterized in that: the cable comprises a main cable core, a ground wire, a first wrapping layer, an inner liner, a shielding layer and an outer sheath; the number of the main wire cores is 3; the ground wire core comprises a ground wire core conductor and a ground wire core insulating layer; the ground wire core insulating layer is extruded outside the ground wire core conductor by adopting an irradiation cross-linked polyolefin material; stranding 3 main wire cores and pulling 1 ground wire core into a cable, wrapping the cable outside the 3 main wire cores and 1 ground wire core of the cable by adopting an aluminum-plastic tape to form a first wrapping layer, wherein the aluminum foil surface of the aluminum-plastic tape faces inwards, and the wrapping coverage rate is 25%; the inner liner is extruded outside the first wrapping layer by adopting a halogen-free material; the shielding layer comprises a first shielding layer and a second shielding layer; the first shielding layer is wrapped outside the lining layer by adopting a copper-plastic tape, the copper foil faces outwards, and the overlapping rate is not less than 25%; the second shielding layer is braided outside the first shielding layer by adopting a tinned copper wire; the tinned copper wire of the second shielding layer is in contact with the copper foil surface of the copper-plastic tape of the first shielding layer; the outer sheath is extruded outside the shielding layer by adopting low-smoke halogen-free flame-retardant polyolefin type material.

2. The marine electromagnetic compatible cable of claim 1, wherein: the 3 main wire cores have the same structure and respectively comprise a main wire core conductor, a main wire core insulating layer and a main wire core wrapping layer; the main wire core conductor is formed by twisting a 5-class soft conductor in a bundle direction and twisting in a complex direction; the main wire core insulating layer is extruded outside the main wire core conductor by adopting an irradiation cross-linked polyolefin material; the main wire core wrapping layer is wrapped outside the main wire core insulating layer by adopting an aluminum-plastic tape, the aluminum foil surface of the aluminum-plastic tape is wrapped outwards, and the wrapping and covering rate is not less than 25%; the earth core contacts with the aluminium foil face of the corresponding main core around the covering, and the aluminium foil face of the main core around the covering contacts with the first aluminium foil face around the covering.