CN215450988U

CN215450988U - Flame-retardant cable

Info

Publication number: CN215450988U
Application number: CN202121139522.1U
Authority: CN
Inventors: 刘杨; 徐健康; 梁海峰
Original assignee: Heilongjiang Jinda Cable Co Ltd
Current assignee: Heilongjiang Jinda Cable Co Ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2022-01-07
Anticipated expiration: 2031-05-26

Abstract

The utility model discloses a flame-retardant cable which comprises a fireproof coating, a flame-retardant outer sheath, a steel wire armor, a halogen-free flame-retardant material, an isolation layer and a copper conductor, wherein the fireproof coating is coated on the outer surface of the cable, the flame-retardant outer sheath is arranged on the inner side of the fireproof coating, the steel wire armor is arranged in the flame-retardant outer sheath, the halogen-free flame-retardant material is wrapped on the inner side of the steel wire armor, the flame-retardant inner sheath is arranged in the halogen-free flame-retardant material, the isolation layer is arranged on the inner side of the flame-retardant inner sheath, and the copper conductor is arranged on the inner side of the isolation layer. The utility model relates to a flame-retardant cable, wherein the outer surface layer of the flame-retardant cable is coated with a fireproof coating to enhance the fire resistance of the cable and slow down the flame spread propagation speed, the inner side of the cable is provided with a halogen-free flame-retardant material and an isolation layer to play the roles of flame retardance and high temperature resistance, and a flame-retardant outer sheath, a flame-retardant inner sheath and a filling material which are arranged in the cable have certain fire resistance, so that the fire resistance of the cable is greatly enhanced.

Description

Flame-retardant cable

Technical Field

The utility model relates to the technical field of cables, in particular to a flame-retardant cable.

Background

Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation. The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers for connecting circuits, electric appliances, etc., and electric devices include primary devices and secondary devices, and electric cables belong to the secondary devices in the electric devices. With the continuous development of economy in China, the application range of the cable is wider and wider, and the performance requirement of the cable is higher and higher. Traditional cable heat resistance is poor, when the conflagration breaing out, the burning takes place easily, when influencing power transmission, the trend of stretching of conflagration has been enlarged, can not effectively ensure citizen's the security of the lives and property, the most fire behavior of cable on the existing market is not good, can not prevent stretching of the intensity of a fire through the fine hindrance of the physical device of outside, and high temperature resistance is also not good, influence the life of cable, need a resistant flame retarded cable to solve this problem.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flame-retardant cable to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the flame-retardant cable comprises a fireproof coating, a flame-retardant outer sheath, a steel wire armor, a halogen-free flame-retardant material, an isolation layer and a copper conductor, wherein the fireproof coating is coated on the outer surface of the cable, the flame-retardant outer sheath is arranged on the inner side of the fireproof coating, the steel wire armor is arranged in the flame-retardant outer sheath, the halogen-free flame-retardant material is wrapped on the inner side of the steel wire armor, the flame-retardant inner sheath is arranged in the halogen-free flame-retardant material, the isolation layer is arranged on the inner side of the flame-retardant inner sheath, and the copper conductor is arranged on the inner side of the isolation layer.

Furthermore, the inner side of the flame-retardant outer sheath is wrapped with a braided shielding layer, and the thickness of the braided shielding layer is 0.15 mm.

Further, the flame-retardant outer sheath and the flame-retardant inner sheath are both made of polyurethane sheath materials.

Furthermore, a filling material is arranged in the flame-retardant inner sheath, and an inorganic heat-absorbing material is filled in the filling material.

Further, the thickness of the isolation layer is 0.55 mm.

Further, the inner side of the isolation layer is provided with a polyethylene insulation layer, and the thickness of the polyethylene insulation layer is 0.35 mm.

Compared with the prior art, the utility model has the following beneficial effects:

(1) the utility model relates to a flame-retardant cable, wherein the outer surface layer of the flame-retardant cable is coated with a fireproof coating to enhance the fire resistance of the cable and slow down the flame spread propagation speed, the inner side of the cable is provided with a halogen-free flame-retardant material and an isolation layer to play the roles of flame retardance and high temperature resistance, and a flame-retardant outer sheath, a flame-retardant inner sheath and a filling material which are arranged in the cable have certain fire resistance, so that the fire resistance of the cable is greatly enhanced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a flame-retardant-resistant cable according to an embodiment of the utility model.

Reference numerals:

1. a fire-retardant coating; 2. a flame retardant outer jacket; 3. weaving a shielding layer; 4. steel wire armoring; 5. a halogen-free flame retardant material; 6. a flame-retardant inner sheath; 7. a filler material; 8. an isolation layer; 9. a polyethylene insulating layer; 10. a copper conductor.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1, the flame-retardant cable according to the embodiment of the utility model includes a fire-retardant coating 1, a flame-retardant outer sheath 2, a steel wire armor 4, a halogen-free flame-retardant material 6, an isolation layer 8 and a copper conductor 10, wherein the fire-retardant coating 1 is coated on an outer surface of the cable, the flame-retardant outer sheath 2 is arranged on an inner side of the fire-retardant coating 1, the steel wire armor 4 is arranged in the flame-retardant outer sheath 2, the halogen-free flame-retardant material 6 is wrapped on an inner side of the steel wire armor 4, the flame-retardant inner sheath 6 is arranged in the halogen-free flame-retardant material 6, the isolation layer 8 is arranged on an inner side of the flame-retardant inner sheath 6, and the copper conductor 10 is arranged on an inner side of the isolation layer 8.

According to the scheme, the inner side of the flame-retardant outer sheath 2 is wrapped with the braided shielding layer 3, the thickness of the braided shielding layer 3 is 0.15mm, the flame-retardant outer sheath 2 and the flame-retardant inner sheath 6 are both made of polyurethane sheath materials, the flame-retardant inner sheath 6 is internally provided with the filling material 7, the filling material 7 is filled with the inorganic heat-absorbing material, the thickness of the isolation layer 8 is 0.55mm, the inner side of the isolation layer 8 is provided with the polyethylene insulation layer 9, the polyethylene insulation layer 9 plays a role in insulation protection, and the thickness of the polyethylene insulation layer 9 is 0.35 mm.

In specific application, the utility model relates to a flame-retardant cable, the outer surface layer of the flame-retardant cable arranged in the device is coated with a fireproof coating 1 to enhance the fire resistance of the cable and slow down the spreading speed of flame, the inner side of the cable is provided with a halogen-free flame-retardant material 5 and an isolation layer 8 to play roles of flame retardance and high temperature resistance, and a flame-retardant outer sheath 2, a flame-retardant inner sheath 6 and a filling material 7 arranged in the cable all have certain fire resistance, so that the fire resistance of the cable is greatly enhanced.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a fire-retardant cable, its characterized in that, includes fire-retardant coating (1), fire-retardant oversheath (2), steel wire armor (4), halogen-free flame retardant material (5), isolation layer (8) and copper conductor (10), the cable extexine is scribbled to fire-retardant coating (1), fire-retardant coating (1) inboard is equipped with fire-retardant oversheath (2), be equipped with in fire-retardant oversheath (2) steel wire armor (4), the inboard parcel of steel wire armor (4) has halogen-free flame retardant material (5), be equipped with fire-retardant inner sheath (6) in halogen-free flame retardant material (5), fire-retardant inner sheath (6) inboard is equipped with isolation layer (8), isolation layer (8) inboard is equipped with copper conductor (10).

2. A flame resistant cable according to claim 1, wherein the flame resistant outer sheath (2) is wrapped inside with a braided shield (3), the braided shield (3) having a thickness of 0.15 mm.

3. A flame resistant cable according to claim 1, wherein the flame retardant outer sheath (2) and the flame retardant inner sheath (6) are both polyurethane sheath materials.

4. The flame-resistant cable according to claim 1, wherein the flame-resistant inner sheath (6) is filled with a filler material (7), and the filler material (7) is filled with an inorganic heat-absorbing material.

5. A flame resistant cable as claimed in claim 1, characterized in that the thickness of the barrier layer (8) is 0.55 mm.

6. A flame resistant cable according to claim 1, characterized in that the insulation layer (8) is provided with an insulation layer (9) of polyethylene on the inside, and the thickness of the insulation layer (9) of polyethylene is 0.35 mm.