CN212136019U

CN212136019U - Coaxial cable for pipeline penetration

Info

Publication number: CN212136019U
Application number: CN202021014586.4U
Authority: CN
Inventors: 朱正翔; 汪真伟; 卢柱; 刘晨阳
Original assignee: ZHEJIANG WANMA GROUP SPECIAL ELECTRON CABLE CO Ltd
Current assignee: ZHEJIANG WANMA GROUP SPECIAL ELECTRON CABLE CO Ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-11
Anticipated expiration: 2030-06-05

Abstract

The utility model relates to a through-pipe coaxial cable, which comprises a main cable and a metal reinforcement which are arranged in parallel; the main cable and the metal reinforcing piece are connected into a whole through the same outer sheath with a tearing opening. The utility model discloses structural design is novel, runs through the pipeline for coaxial cable long distance and uses and provide a section pertinence product, simultaneously, owing to add the good resilience that the metal reinforcement made the cable have, has reduced the risk that the cable caused the irreparable damage to the cable because of the nonstandard operations such as transition of buckling in the use installation, and relative self-supporting cable moreover, the structure size is little, reduces to occupy and lays the space, has also practiced thrift the sheath cost simultaneously.

Description

Coaxial cable for pipeline penetration

Technical Field

The utility model relates to a wear pipeline coaxial cable.

Background

Traditional coaxial cable product structural design is stiff, including two kinds of structures of single coaxial cable and self-supporting cable, some not enough that above-mentioned structure coaxial cable product exists have can not satisfy some current customer's demands: 1. the traditional coaxial cable can not easily penetrate through a pipeline, and a single coaxial cable can not directly penetrate through the pipeline in a long distance due to the fact that the single coaxial cable is soft; as shown in fig. 2, the self-supporting cable has a large maximum structural dimension a, and is large in resistance when penetrating through a long pipeline, so that large manpower and material resources are wasted, or the structural dimension of the self-supporting cable is directly larger than the inner diameter of a laying pipeline, so that threading cannot be performed; moreover, for the pipeline with smaller space originally, the self-supporting cable occupies too much limited space, which causes space waste; 2. in the process of pipeline penetration in the construction of the cable, the bending operation of the cable cannot be avoided, but the cable is easy to cause fatal damage to the cable after being bent for a long time, and the actual use can be directly influenced; 3. the cost of post-maintenance of cables can also be relatively high, as installed house wiring, needs to be renewed due to old cables being damaged or aged, requires destructive treatment of existing interior decoration due to space constraints, and, in addition, cables that are too flexible or too large in size to pass through the duct.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome not enough among the above-mentioned background art, provide a simple structure, modern design, convenient to use's poling coaxial cable.

Therefore, the utility model adopts the following technical proposal:

a through-pipe coaxial cable comprises a main cable and a metal reinforcing piece which are arranged in parallel; the main cable and the metal reinforcing piece are connected into a whole through the same outer sheath with a tearing opening. The number of the metal reinforcing pieces is not less than 1; the obvious tearing opening on the outer sheath ensures that the main cable and the metal reinforcing part can be easily separated, and the main cable is not damaged during separation (metal of the metal reinforcing simple end head is allowed to be exposed during separation).

The thickness of the outer sheath between the main cable and the metal reinforcing piece is 0.3-0.5 mm.

The main cable is a coaxial cable and sequentially comprises an inner conductor, an insulating layer, an aluminum foil shielding layer, a braided shielding layer and a sheath layer from inside to outside, wherein the insulating layer, the aluminum foil shielding layer, the braided shielding layer and the sheath layer are coated on the inner conductor.

The metal reinforcing piece is a galvanized steel wire or a phosphatized steel wire, and the tensile strength of the metal reinforcing piece is not less than 1570 MPA.

The utility model has the advantages of it is following: structural design is novel, and it provides a pertinence product to run through the pipeline for coaxial cable long distance and use, simultaneously, owing to add the good resilience that metal reinforcement made the cable have, reduced the risk that the cable caused the irreparable damage to the cable because of the nonstandard operations such as transition of buckling in the use installation, self-supporting cable relatively moreover, structural dimension is little, reduces to occupy and lays the space, has also practiced thrift the sheath cost simultaneously.

In addition, the extrusion moulding process of wearing coaxial cable for the pipeline is complicated relatively, will obtain stable, perfect cable appearance, and does not harm the cable, needs whole extrusion line perfect fit (including steps such as unwrapping wire, extrusion molding, cooling, receipts line), the utility model provides a manufacturing method has effectively guaranteed the stability of the appearance quality, the line footpath and the main push-towing rope electrical property after each part's mutual harmony and main push-towing rope and metal reinforcement combination.

Drawings

FIG. 1 is a schematic view of the cross-sectional structure of the coaxial cable for pipeline penetration of the present invention;

fig. 2 is a schematic cross-sectional structure of a conventional self-supporting cable.

Detailed Description

The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following embodiments.

As shown in fig. 1, a through-pipe coaxial cable comprises a main cable 1 and a metal reinforcing member 2 which are arranged in parallel; the main cable and the metal reinforcing piece are connected into a whole through the same outer sheath 4 with a tearing opening 3. The thickness of the outer sheath between the main cable and the metal reinforcing piece is 0.3-0.5 mm. The main cable is a medium for providing signal transmission for a cable television system, and the main cable sequentially comprises an inner conductor, an insulating layer coated on the inner conductor, an aluminum foil shielding layer, a braided shielding layer and a sheath layer from inside to outside. The metal reinforcing part improves the resilience and the pipeline penetrating strength of the cable, is a galvanized steel wire or a phosphatized steel wire, and has tensile strength of more than or equal to 1570 MPA. The outer sheath is made of PE/PVC/low-smoke halogen-free or other common sheath materials.

Claims

1. A through-pipe coaxial cable, characterized in that: comprises a main cable and a metal reinforcing piece which are arranged in parallel; the main cable and the metal reinforcing piece are connected into a whole through the same outer sheath with a tearing opening.

2. A through-the-conduit coaxial cable as set forth in claim 1, wherein: the thickness of the outer sheath between the main cable and the metal reinforcing piece is 0.3-0.5 mm.

3. A through-the-conduit coaxial cable as set forth in claim 2, wherein: the main cable is a coaxial cable and sequentially comprises an inner conductor, an insulating layer, an aluminum foil shielding layer, a braided shielding layer and a sheath layer from inside to outside, wherein the insulating layer, the aluminum foil shielding layer, the braided shielding layer and the sheath layer are coated on the inner conductor.

4. A through-the-conduit coaxial cable as set forth in claim 3, wherein: the metal reinforcing piece is a galvanized steel wire or a phosphatized steel wire, and the tensile strength of the metal reinforcing piece is not less than 1570 MPA.