Flame-retardant anti-interference B1-level control cable

Abstract

The utility model discloses a flame-retardant anti-interference B1-level control cable, which comprises a cable core, and a halogen-free low-smoke high-flame-retardant belt layer, a low-heat-release oxygen barrier layer, a metal belt armor layer and a low-heat-release sheath layer which are sequentially coated outside the cable core, a plurality of groups of first-level cables are arranged in the cable core, each group of first-level cable comprises at least two conductors, and the conductors are arranged in the cable core. Each conductor is coated with an insulating layer; each group of first-level cables is coated with a first-level cable halogen-free low-smoke high-flame-retardant belt layer and a first-level cable braid layer. The cable can be used as a control cable, can meet the flame-retardant and anti-interference requirements required by modern buildings, is excellent in performance, can meet the anti-interference and flame-retardant B1-level requirements in a large-length cable, and is convenient to process.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a flame-retardant and anti-interference B1 class control cable. Background Art

[0002] With the gradual advancement of urbanization, the rapid and steady development of key projects such as subways and high-rise buildings, and the increasing number of high-rise buildings and densely populated public places, traditional control cables have a simple structure and are difficult to meet the anti-interference and flame-retardant B1 requirements in long-length cables. They cannot adapt to the development needs of the market and technology, and it is necessary to improve them. Utility Model Content

[0003] The utility model aims to provide a flame retardant and anti-interference B1 class control cable, which is used to solve the problem that the traditional control cable in the prior art has a simple structure and is difficult to meet the anti-interference and flame retardant B1 class requirements in long-length cables.

[0004] The utility model solves the above problems through the following technical solutions:

[0005] A flame-retardant and anti-interference B1 class control cable comprises a cable core and a halogen-free, low-smoke, high-flame-retardant tape layer, a low-heat-release oxygen-isolating layer, a metal tape armor layer and a low-heat-release sheath layer sequentially coated on the outside of the cable core, wherein the cable core is composed of a plurality of groups of first-level cables, each group of the first-level cables comprises at least two conductors, and each of the conductors is coated with an insulating layer; the outside of each group of the first-level cables is coated with a first-level cable halogen-free, low-smoke, high-flame-retardant tape layer and a first-level cable braided layer.

[0006] Furthermore, the conductor is a single copper wire structure or a multi-strand copper wire twisted structure.

[0007] Furthermore, the insulating layer is made of cross-linked polyethylene material.

[0008] Furthermore, the braiding material of the primary cable braiding layer is copper wire and tinned copper wire.

[0009] Furthermore, the low heat release oxygen-isolating layer and the low heat release sheath layer are extruded structures of low-smoke halogen-free flame-retardant polyolefin.

[0010] Furthermore, a product identification mark is provided on the surface of the low heat release sheath layer.

[0011] Furthermore, the cable core is formed by twisting a plurality of groups of primary cables.

[0012] Furthermore, the gaps between the twisted primary cables are filled with highly flame-retardant filling ropes.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] (1) The utility model can be used as a control cable and can meet the flame retardancy and anti-interference requirements of modern buildings. It has excellent performance and can also meet the anti-interference and flame retardancy B1 level requirements in long-length cables. It is also easy to process.

[0015] (2) The utility model is not only anti-interference and B1 flame retardant, but also has shielding and tensile properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Among them, 1-conductor; 2-insulation layer; 3-first-level cable halogen-free, low-smoke and high-flame-retardant tape layer; 4-first-level cable braided layer; 5-halogen-free, low-smoke and high-flame-retardant tape layer; 6-low heat release oxygen insulation layer; 7-metal tape armor layer; 8-low heat release sheath layer. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0019] Embodiment 1:

[0020] Combined with Figure 1 As shown, a flame retardant and anti-interference B1 class control cable comprises a cable core and a halogen-free, low-smoke, high flame retardant tape layer 5, a low heat release oxygen insulation layer 6, a metal tape armor layer 7 and a low heat release sheath layer 8 which are sequentially coated on the outside of the cable core, wherein the cable core is composed of a plurality of groups of primary cables, each group of the primary cables comprises at least two conductors 1, and each of the conductors 1 is coated with an insulating layer 2; the outside of each group of the primary cables is coated with a primary cable halogen-free, low-smoke, high flame retardant tape layer 3 and a primary cable braided layer 4.

[0021] Flame retardant materials are arranged on the outside of the primary cable and the cable core. The primary cable braided layer 4 has anti-interference function. The low heat release oxygen insulation layer 6, the low heat release sheath layer 8 and the metal belt armor layer 7 have flame retardant, tensile resistance and shielding effects respectively.

[0022] Embodiment 2:

[0023] Based on Example 1, Figure 1 As shown, the conductor 1 is the first type copper conductor, the second type copper conductor or the fifth type soft copper conductor in the standard GB / T3956, and the conductor 1 is a single-strand copper wire structure or a multi-strand copper wire twisted structure.

[0024] Furthermore, the insulating layer 2 is made of cross-linked polyethylene material.

[0025] Furthermore, the braiding material of the primary cable braided layer 4 is copper wire and tinned copper wire.

[0026] Furthermore, the low heat release oxygen-isolating layer 6 and the low heat release sheath layer 8 are extruded structures of low-smoke halogen-free flame-retardant polyolefin.

[0027] Furthermore, a product identification mark is provided on the surface of the low heat release sheath layer 8 .

[0028] Furthermore, the cable core is formed by twisting a plurality of groups of primary cables, and the gaps between the twisted primary cables are filled with highly flame-retardant filling ropes.

[0029] The utility model can be used as a control cable and can meet the flame retardancy and anti-interference requirements of modern buildings. It has superior performance, can also meet the anti-interference and flame retardancy B1 level requirements in long-length cables, and is easy to process.

[0030] Although the present invention is described herein with reference to the illustrative embodiments of the present invention, the above embodiments are merely preferred embodiments of the present invention, and the embodiments of the present invention are not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. A flame retardant and anti-interference B1 class control cable, characterized in that: The invention comprises a cable core and a halogen-free, low-smoke, high-flame-retardant tape layer (5), a low-heat-release oxygen-isolating layer (6), a metal tape armor layer (7) and a low-heat-release sheath layer (8) which are sequentially coated on the outside of the cable core. The cable core is composed of a plurality of groups of first-level cables, each group of the first-level cables comprises at least two conductors (1), and each of the conductors (1) is coated with an insulating layer (2); the outside of each group of the first-level cables is coated with a first-level cable halogen-free, low-smoke, high-flame-retardant tape layer (3) and a first-level cable braided layer (4).

2. The flame-retardant and anti-interference B1 class control cable according to claim 1, characterized in that: The conductor (1) is a single copper wire structure or a multi-strand copper wire twisted structure.

3. The flame-retardant and anti-interference B1 class control cable according to claim 1, characterized in that: The insulating layer (2) is made of cross-linked polyethylene material.

4. The flame-retardant and anti-interference B1 class control cable according to claim 1, characterized in that: The braiding material of the primary cable braiding layer (4) is copper wire and tinned copper wire.

5. The flame-retardant and anti-interference B1 class control cable according to claim 1, characterized in that: The low heat release oxygen-isolating layer (6) and the low heat release sheath layer (8) are extruded structures of low-smoke, halogen-free, flame-retardant polyolefin.

6. The flame-retardant and anti-interference B1 class control cable according to claim 1, characterized in that: The surface of the low heat release sheath layer (8) is provided with a product identification mark.

7. The flame-retardant and anti-interference B1 class control cable according to claim 1, characterized in that: The cable core is formed by twisting a plurality of groups of primary cables.

8. The flame-retardant and anti-interference B1 class control cable according to claim 7, characterized in that: The gaps between the twisted primary cables are filled with highly flame-retardant filling ropes.

Images