CN210123658U

CN210123658U - Environment-friendly shielded cable

Info

Publication number: CN210123658U
Application number: CN201921173094.7U
Authority: CN
Inventors: 肖云; 徐艳红; 赵琴琴
Original assignee: ANHUI HUALING CABLE GROUP Co Ltd
Current assignee: ANHUI HUALING CABLE GROUP Co Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-03-03
Anticipated expiration: 2029-07-24

Abstract

The utility model relates to the field of cables, in particular to an environment-friendly shielded cable; the shielding structure comprises a plurality of wire cores, a sub-shielding layer and an outer sheath layer, wherein the outer sheath layer is made of low-smoke halogen-free polyethylene materials, a main shielding layer is arranged inside the outer sheath layer, the main shielding layer is a steel strip armored shielding layer, an insulating layer is arranged inside the main shielding layer, and the insulating layer is made of polyethylene materials; a cross-shaped partition plate is fixedly arranged inside the insulating layer and is made of ceramic materials; the wire core is made of copper material, and a tin coating is arranged outside the wire core; every two wire cores are mutually twisted and are arranged inside the sub-shielding layer; the sub-shielding layer is a copper wire braided sub-shielding layer; first fireproof daub is filled between the sub-shielding layer and the tin coating; the sub-shielding layers are arranged in independent spaces divided by the cross-shaped partition plates. The utility model discloses simple structure possesses feature of environmental protection, fire resistance and high shielding performance.

Description

Environment-friendly shielded cable

Technical Field

The utility model relates to a cable field specifically is an environment-friendly shielded cable.

Background

Shielded cables are transmission lines in which signal wires are wrapped with a metallic mesh braid. The braid is typically red copper or tin-plated copper. The shielding is to ensure the transmission performance of the system in the environment with electromagnetic interference, and the anti-interference here should include two aspects, namely the capability of resisting external electromagnetic interference and the capability of the system itself radiating electromagnetic interference outwards.

The existing cable is usually arranged by adopting single-layer shielding, and the shielding effect is poor; the common shielded cable may spontaneously combust to generate a large amount of smoke in a long time of practical life, and generate poisonous gases containing halogen such as chlorine, bromine, fluorine and the like, and has poor flame retardance and is not environment-friendly.

Therefore, the utility model provides an environment-friendly shielded cable possesses feature of environmental protection, fire resistance and high shielding performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an environment-friendly shielded cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an environment-friendly shielded cable comprises a plurality of wire cores, a sub-shielding layer and an outer sheath layer, wherein the outer sheath layer is made of a low-smoke halogen-free polyethylene material, a total shielding layer is arranged inside the outer sheath layer, the total shielding layer is a steel strip armored shielding layer, an insulating layer is arranged inside the total shielding layer, and the insulating layer is made of a polyethylene material; the inside of the insulating layer is fixedly provided with a cross-shaped partition plate, the cross-shaped partition plate is made of ceramic materials, the cross-shaped partition plate divides the inside of the insulating layer into four independent spaces, and the internal structures of the independent spaces are completely the same; the wire core is made of copper materials, a tin-plated layer is arranged outside the wire core, and the thickness of the tin-plated layer is 0.5 mm; every two wire cores are mutually twisted and are arranged inside the partial shielding layer; the sub-shielding layer is a copper wire braided sub-shielding layer; first fireproof daub is filled between the sub-shielding layer and the tin-plated layer; the sub-shielding layers are arranged in independent spaces divided by the crossed partition plates.

In order to enable heat exchange to be carried out between independent spaces divided by the cross-shaped partition plate and improve the flame-retardant property of the cable, heat dissipation holes are uniformly formed in the surface of the cross-shaped partition plate.

In order to enable the cross-shaped partition board to be connected with the insulating layer more conveniently and reduce the mechanical damage of the cross-shaped partition board to the inner wall of the insulating layer, arc-shaped protrusions are arranged at the edge of the cross-shaped partition board, grooves corresponding to the arc-shaped protrusions are formed in the inner layer of the insulating layer, and the cross-shaped partition board and the insulating layer are clamped with the grooves through the arc-shaped protrusions.

In order to fully utilize the space inside the sub-shielding layer and increase the thickness of the tin coating to improve the insulating property of the cable, the diameter of the circumference of the outer side of the tin coating is equal to the radius of the circumference of the inner side of the sub-shielding layer.

In order to increase the flame retardant property of the cable and prevent the cable from spontaneous combustion to pollute the air, the area between the cross-shaped partition plate and the shielding layer and the insulating layer is filled with second fireproof mortar.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the outer sheath layer is made of low-smoke halogen-free polyethylene material, the insulating layer is made of polyethylene material, and toxic gases containing halogen such as chlorine, bromine and fluorine cannot be generated when the polyethylene material is combusted; the branch shielding layer with it has first fire prevention daub to fill between the tin coating, makes the cable possess fire-retardant characteristic, prevents that the cable burning from producing a large amount of flue gases.

2. The inner part of the outer sheath layer is provided with a total shielding layer which is a steel tape armored shielding layer, the branch shielding layer is a copper wire woven branch shielding layer, on one hand, the two materials have flame retardant property, on the other hand, the electromagnetic interference of external current and the mutual interference between internal currents can be shielded, and the anti-interference performance of the cable is higher.

3. The inside of the insulating layer is fixedly provided with a cross-shaped partition plate, the cross-shaped partition plate is made of ceramic materials, the cross-shaped partition plate divides the inside of the insulating layer into four independent spaces, and the internal structures of the independent spaces are completely the same; the ceramic is incombustible, and even if one space is burnt, the structure in the other space is not affected, so that the flame retardant property of the cable is improved.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

fig. 3 is a schematic cross-sectional view of the cross-shaped partition plate of the present invention.

In the figure: 1. a wire core; 2. plating a tin layer; 3. a first fire-resistant mastic; 4. Dividing a shielding layer; 5. Second fireproof daub; 6. a cross-shaped partition plate; 601. heat dissipation holes; 7. a circular arc-shaped bulge; 8. an insulating layer; 9. a total shielding layer; 10. an outer jacket layer.

Detailed Description

The present invention will be further described with reference to the following embodiments, and in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. The condition in the embodiment can be further adjusted according to concrete condition the utility model discloses a it is right under the design prerequisite the utility model discloses a simple improvement of method all belongs to the utility model discloses the scope of claiming.

Referring to fig. 1-3, an environment-friendly shielded cable includes a plurality of wire cores 1, a partial shielding layer 4 and an outer sheath layer 10, wherein the outer sheath layer 10 is made of a low-smoke halogen-free polyethylene material, a total shielding layer 9 is arranged inside the outer sheath layer 10, the total shielding layer 9 is a steel tape armored shielding layer, two ends of the total shielding layer 9 are grounded, an insulating layer 8 is arranged inside the total shielding layer 9, and the insulating layer 8 is made of a polyethylene material; a cross-shaped partition plate 6 is fixedly arranged inside the insulating layer 8, the cross-shaped partition plate 6 is made of ceramic materials, the cross-shaped partition plate 6 divides the inside of the insulating layer 8 into four independent spaces, and the internal structures of the independent spaces are completely the same; the wire core 1 is made of copper material, a tin coating 2 is arranged outside the wire core 1, and the thickness of the tin coating 2 is 0.5 mm; every two wire cores 1 are mutually twisted and are arranged inside the sub-shielding layer 4; the sub-shielding layer 4 is a copper wire braided sub-shielding layer; a first fireproof daub 3 is filled between the sub-shielding layer 4 and the tin coating 2; the sub-shielding layer 4 is arranged in an independent space divided by the cross-shaped partition plate 6, and one end of the sub-shielding layer 4 is grounded.

Specifically, referring to fig. 3, heat dissipation holes 601 are uniformly formed in the surface of the cross-shaped partition 6, and the heat dissipation holes 601 are circular holes, so that heat exchange can be performed between independent spaces partitioned by the cross-shaped partition 6, and the flame retardant property of the cable is improved.

Specifically, referring to fig. 2, the arc-shaped protrusions 7 are disposed at the edges of the cross-shaped partition 6, the inner layer of the insulating layer 8 is provided with grooves corresponding to the arc-shaped protrusions 7, and the cross-shaped partition 6 and the insulating layer 8 are engaged with each other through the arc-shaped protrusions 7 and the grooves, so that the cross-shaped partition 6 and the insulating layer 8 are more conveniently connected, and mechanical damage of the cross-shaped partition 6 to the inner wall of the insulating layer 8 is reduced.

Specifically, referring to fig. 1, the diameter of the outer circumference of the tin-plated layer 2 is equal to the radius of the inner circumference of the partial shielding layer 4, so as to fully divide the inner space of the shielding layer 4 and increase the thickness of the tin-plated layer 2, thereby improving the insulation performance of the cable.

Specifically, referring to fig. 1, the second fireproof mastic 5 is filled in the area between the cross-shaped partition plate 6 and the sub-shielding layer 4 and the insulating layer 8, so that the flame retardant property of the cable is improved, and the cable is prevented from spontaneous combustion to pollute air; the second fireproof daub 5 has the same components as the first fireproof daub 3, and can be made of fireproof daubs for cables produced by gallery Zuoze energy-saving technology Limited.

The utility model discloses a theory of operation: the outer sheath layer 10 is made of low-smoke halogen-free polyethylene material, and the insulating layer 8 is made of polyethylene material; the polyethylene material does not generate poisonous gas containing halogen such as chlorine, bromine, fluorine and the like during combustion; it has first fire prevention daub 3 to fill between branch shielding layer 4 and tin coating 2, makes the cable possess fire-retardant characteristic, prevents that the cable burning from producing a large amount of flue gases. The inside of oversheath layer 10 is provided with total shielding layer 9, and total shielding layer 9 is the steel band armor shielding layer, divides shielding layer 4 to weave branch shielding layer for the copper wire, and these two kinds of materials all have fire-retardant characteristic on the one hand, and on the other hand can shield the electromagnetic interference of external current and the mutual interference between the internal current, makes the interference immunity of cable higher. A cross-shaped partition plate 6 is fixedly arranged inside the insulating layer 8, the cross-shaped partition plate 6 is made of ceramic materials, the cross-shaped partition plate 6 divides the inside of the insulating layer 8 into four independent spaces, and the internal structures of the independent spaces are completely the same; the ceramic is incombustible, and even if one space is burnt, the structure in the other space is not affected, so that the flame retardant property of the cable is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an environment-friendly shielded cable, includes several sinle silk (1), divides shielding layer (4) and oversheath layer (10), its characterized in that: the outer sheath layer (10) is made of low-smoke halogen-free polyethylene materials, a total shielding layer (9) is arranged inside the outer sheath layer (10), the total shielding layer (9) is a steel tape armored shielding layer, an insulating layer (8) is arranged inside the total shielding layer (9), and the insulating layer (8) is made of polyethylene materials; a cross-shaped partition plate (6) is fixedly arranged inside the insulating layer (8), the cross-shaped partition plate (6) is made of ceramic materials, the cross-shaped partition plate (6) divides the inside of the insulating layer (8) into four independent spaces, and the internal structure of each independent space is completely the same; the cable core (1) is made of copper materials, a tin-plated layer (2) is arranged outside the cable core (1), and the thickness of the tin-plated layer (2) is 0.5 mm; every two wire cores (1) are mutually twisted and are arranged in the partial shielding layer (4); the sub-shielding layer (4) is a copper wire braided sub-shielding layer; a first fireproof daub (3) is filled between the sub-shielding layer (4) and the tin coating (2); the sub-shielding layers (4) are arranged in independent spaces divided by the cross-shaped partition plates (6).

2. The environment-friendly shielded cable according to claim 1, wherein: the surface of the cross-shaped partition plate (6) is uniformly provided with heat dissipation holes (601).

3. The environment-friendly shielded cable of claim 2, wherein: arc-shaped bulges (7) are arranged at the edges of the cross-shaped partition plates (6), grooves corresponding to the arc-shaped bulges (7) are formed in the inner layer of the insulating layer (8), and the cross-shaped partition plates (6) and the insulating layer (8) are mutually clamped with the grooves through the arc-shaped bulges (7).

4. The environment-friendly shielded cable according to claim 1, wherein: the diameter of the circumference of the outer side of the tin-plated layer (2) is equal to the radius of the circumference of the inner side of the sub-shielding layer (4).

5. The environment-friendly shielded cable according to claim 1, wherein: and a second fireproof mortar (5) is filled in the area between the cross-shaped partition plate (6) and the sub-shielding layer (4) and the insulating layer (8).