CN221261996U

CN221261996U - Improved low-smoke halogen-free fireproof cable

Info

Publication number: CN221261996U
Application number: CN202322619921.3U
Authority: CN
Inventors: 杨小力; 杨洁纯; 杨洁荣
Original assignee: Shenzhen Youxian Cable Co ltd
Current assignee: Shenzhen Youxian Cable Co ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-07-02
Anticipated expiration: 2033-09-26

Abstract

The utility model relates to the technical field of low-smoke halogen-free fireproof cables, in particular to an improved low-smoke halogen-free fireproof cable which comprises a steel belt structure, wherein a protection component is arranged on the outer side of the steel belt structure and comprises an isolation structure, the inner wall of the isolation structure is adhered to the steel belt structure, and the outer wall of the isolation structure is adhered to the protection structure. The material through the protection structure is halogen-free epoxy resin, and the coefficient of heat conductivity of epoxy resin is usually between 0.2 and 0.6W/(m.K), has good heat insulation performance, so that the heat transfer of high temperature reduced through the protection structure under the external environment, the inner wall of the isolation structure is adhered to the steel belt structure 1, the material of the isolation structure is halogen-free nylon pa66 material, and the coefficient of heat conductivity is generally about 0.3 (W/m-K), has good heat insulation performance and further reduces the heat transfer, and avoids the problem that the low smoke halogen-free fireproof cable is easy to damage when the temperature of the working environment where the low smoke halogen-free fireproof cable is in for a long time is higher.

Description

Improved low-smoke halogen-free fireproof cable

Technical Field

The utility model relates to the technical field of low-smoke halogen-free fireproof cables, in particular to an improved low-smoke halogen-free fireproof cable.

Background

Low smoke zero halogen (Low smoke zero halogen), abbreviated LSZH, LSOH, LS, H, LSFH and OHLS, is a class of materials for wire jackets in the wire and cable industry. The low smoke halogen-free wire sheath is composed of thermoplastic or thermosetting which has low smoke discharge when heated and does not contain halogen.

For example, the authorized bulletin number CN202352410U, a halogen-free low-smoke fireproof cable, through irradiation crosslinking special treatment, converts the linear molecular structure of polyethylene into a three-dimensional reticular molecular structure, which greatly improves the electrical property, physical property and mechanical property of the product, not only has the characteristics of no flame retardation and no generation of hydrogen halide gas, so that the cable can not generate harmful gas and smoke even if burned, and cannot cause a secondary disaster, however, in the using process of the halogen-free low-smoke fireproof cable in the above document, the heat insulation performance of the halogen-free low-smoke fireproof cable is poor, so that when the environment temperature of the halogen-free low-smoke fireproof cable is higher, the external heat is transferred to the interior of the halogen-free low-smoke fireproof cable in a heat transfer way, so that the internal lamellar material is easily affected by high temperature, thereby ageing and melting are caused, and the halogen-free low-smoke fireproof cable is damaged, and the use of the halogen-free low-smoke fireproof cable is affected.

Disclosure of utility model

The utility model aims to solve the problems in the prior art, and provides an improved low-smoke halogen-free fireproof cable.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a low smoke and zero halogen fireproof cable of improvement formula, includes the steel band structure, the outside of steel band structure is equipped with the protection component, the protection component includes isolation structure, isolation structure's inner wall and steel band structure bond mutually, isolation structure's outer wall and protection structure bond mutually.

Preferably, the outer wall of the protective structure is bonded with the halogen-free flame retardant structure.

Preferably, the inner wall of the steel belt structure is connected with the protective sleeve.

Preferably, a wire core is arranged in the protective sleeve.

Preferably, the steel strip structure is woven by using transverse, longitudinal and latitudinal metal wires.

The improved low-smoke halogen-free fireproof cable provided by the utility model has the beneficial effects that: the material through the protection structure is halogen-free epoxy resin, and the coefficient of heat conductivity of epoxy resin is usually between 0.2 and 0.6W/(m.K), has good heat insulation performance, so that the heat transfer of high temperature reduced through the protection structure under the external environment, the inner wall of the isolation structure is adhered to the steel belt structure 1, the material of the isolation structure is halogen-free nylon pa66 material, and the coefficient of heat conductivity is generally about 0.3 (W/m-K), has good heat insulation performance and further reduces the heat transfer, and avoids the problem that the low smoke halogen-free fireproof cable is easy to damage when the temperature of the working environment where the low smoke halogen-free fireproof cable is in for a long time is higher.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of FIG. 1A;

FIG. 3 is a schematic cross-sectional view of FIG. 1;

Fig. 4 is a schematic diagram of the structure of fig. 3B.

In the figure: 1. the steel belt structure, 2, no steamed fire-retardant structure, 3, lag, 4, protection component, 4a1, isolation structure, 4a2, protection structure, 4b1, abrasionproof portion, 5, sinle silk.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

Example 1:

Referring to fig. 1-4: in this embodiment, an improvement formula low smoke and zero halogen fireproof cable, including steel band structure 1, the outside of steel band structure 1 is equipped with protective component 4, and protective component 4 includes isolation structure 4a1, and the material of check protection structure 4a2 is halogen-free epoxy, and halogen-free epoxy is by the high temperature resistant adhesive of bi-component of epoxy basis, mainly is applicable to the cementing of high temperature resistant metal, pottery etc.. The working temperature is-50-180 ℃, the short time can reach 250 ℃, in addition, the heat conductivity coefficient of epoxy resin is usually between 0.2-0.6W/(m.K), the inner wall of the isolation structure 4a1 with good heat insulation performance is bonded with the steel belt structure 1, the isolation structure 4a1 is made of halogen-free nylon pa66 material, the heat conductivity coefficient is generally about 0.3 (W/m-K), the heat insulation performance is good, the outer wall of the isolation structure 4a1 is bonded with the protection structure 4a2, the outer wall of the protection structure 4a2 is bonded with the halogen-free flame retardant structure 2, the inner wall of the steel belt structure 1 is connected with the protective sleeve 3, the wire core 5 is arranged in the protective sleeve 3, and the steel belt structure 1 is woven by transverse, longitudinal and longitudinal wires.

Working principle:

The material of the protection structure 4a2 is halogen-free epoxy resin, the heat conductivity coefficient of the epoxy resin is usually between 0.2 and 0.6W/(m.K), and the heat insulation performance is good, so that the heat transfer of the high temperature reduced by the protection structure 4a2 in the external environment is realized, the inner wall of the isolation structure 4a1 is adhered to the steel belt structure 1, the material of the isolation structure 4a1 is halogen-free nylon pa66, the heat conductivity coefficient is generally about 0.3 (W/m-K), the heat transfer of the heat with the good heat insulation performance is further reduced, and the problem that the low-smoke halogen-free fireproof cable is easy to damage when the temperature of the working environment where the low-smoke halogen-free fireproof cable is located for a long time is high is avoided.

Example 2:

Referring to fig. 1-4: in this embodiment, an improved low smoke and zero halogen fireproof cable, wherein the protection component 4 may further include an anti-wear part 4b1, the inside of the anti-wear part 4b1 is adhered to the halogen-free flame retardant structure 2, and the anti-wear part 4b1 is made of nitrile rubber, so that the anti-wear performance and elasticity are excellent, and the problem that the low smoke and zero halogen fireproof cable is damaged due to contact between the low smoke and zero halogen fireproof cable and the ground caused by pulling of a user in the construction process is avoided.

While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.

Claims

1. The utility model provides an improvement formula low smoke and zero halogen fireproof cable, includes steel band structure (1), its characterized in that: the outside of steel band structure (1) is equipped with protection component (4), protection component (4) are including isolation structure (4 a 1), the inner wall of isolation structure (4 a 1) is bonded with steel band structure (1), the outer wall of isolation structure (4 a 1) is bonded with protection structure (4 a 2).

2. An improved low smoke zero halogen fire cable according to claim 1, wherein: the outer wall of the protection structure (4 a 2) is adhered with the halogen-free flame retardant structure (2).

3. An improved low smoke zero halogen fire cable according to claim 1, wherein: the inner wall of the steel belt structure (1) is connected with a protective sleeve (3).

4. An improved low smoke zero halogen fire barrier cable as in claim 3 wherein: the inside of the protective sleeve (3) is provided with a wire core (5).

5. An improved low smoke zero halogen fire cable according to claim 1, wherein: the steel belt structure (1) is woven by using transverse, longitudinal and latitudinal metal wires.