阅读说明：本技术 一种抗干扰能力强的消防专用双阻燃型电缆 (Special fire-fighting double-flame-retardant cable with strong anti-interference capability ) 是由 王长顶 王志 倪健 于 2020-05-13 设计创作，主要内容包括：本发明公开了电缆领域的一种抗干扰能力强的消防专用双阻燃型电缆,包括外保护套,所述外保护套内设有石棉纤维套,所述石棉纤维套内设有玻璃纤维套,所述玻璃纤维套中部设有抗拉钢缆,所述抗拉钢缆外套有阻燃性硅胶,所述阻燃性硅胶四周均设有卡环,所述卡环外均设有一组电缆本体,一组所述电缆本体外设有玄武岩纤维填充层,所述电缆本体内设有陶瓷纤维填充层,所述陶瓷纤维填充层内设有聚乙烯内护套,所述聚乙烯内护套内设有聚酯带绕包层,所述聚酯带绕包层内设有镀锡无氧软铜丝编织屏蔽层,所述镀锡无氧软铜丝编织屏蔽层内设有若干个缆芯,通过将多个缆芯对称星型铰接,并在外部套有绝缘套和阻燃填充层,大大增强电缆的抗干扰性。(The invention discloses a fire-fighting special double-flame-retardant cable with strong anti-interference capability in the field of cables, which comprises an outer protective sleeve, wherein an asbestos fiber sleeve is arranged in the outer protective sleeve, a glass fiber sleeve is arranged in the asbestos fiber sleeve, a tensile steel cable is arranged in the middle of the glass fiber sleeve, flame-retardant silica gel is sleeved outside the tensile steel cable, snap rings are arranged around the flame-retardant silica gel, a group of cable bodies are arranged outside the snap rings, a basalt fiber filling layer is arranged outside a group of cable bodies, a ceramic fiber filling layer is arranged in the cable bodies, a polyethylene inner sleeve is arranged in the ceramic fiber filling layer, a polyester tape winding layer is arranged in the polyethylene inner sleeve, a tinned anaerobic soft copper wire braided shielding layer is arranged in the polyester tape winding layer, a plurality of cable cores are arranged in the tinned anaerobic soft copper wire braided shielding layer, and the cable cores are symmetrically hinged in a star shape, and an insulating sleeve and a flame-retardant filling layer are sleeved outside, so that the anti-interference performance of the cable is greatly enhanced.)

1. The utility model provides a fire control special use is two fire-retardant type cable that interference killing feature is strong, includes outer protective sheath (1), its characterized in that: the inner wall of the outer protective sleeve (1) is spliced with an asbestos fiber sleeve (2), the inner wall of the asbestos fiber sleeve (2) is spliced with a glass fiber sleeve (3), the middle part of the inner cavity of the glass fiber sleeve (3) is provided with a tensile steel cable (4), the outer surface of the tensile steel cable (4) is sleeved with flame-retardant silica gel (5), the periphery of the outer surface of the flame-retardant silica gel (5) is provided with a snap ring (6), the outer side of the snap ring (6) is provided with a group of cable bodies (7), the outer surface of the cable bodies (7) is provided with a basalt fiber filling layer (8), the inner cavity of the cable bodies (7) is provided with a ceramic fiber filling layer (9), the inner wall of the ceramic fiber filling layer (9) is provided with a polyethylene inner sheath (10), the inner wall of the polyethylene inner sheath (10) is spliced with a polyester tape wrapping layer (11), the inner wall of the polyester tape wrapping layer (11) is spliced with a tinned oxygen-free soft copper wire woven shielding layer (12), the inner wall of the tinned oxygen-free soft copper wire braided shielding layer (12) is spliced with a plurality of cable cores (13).

2. The fire-fighting special double-flame-retardant cable with strong anti-interference capability according to claim 1, characterized in that: and the middle part of the flame-retardant silica gel (5) is provided with a plurality of through holes.

3. The fire-fighting special double-flame-retardant cable with strong anti-interference capability according to claim 1, characterized in that: and the middle parts of the cable cores (13) are provided with axial ropes (14).

4. The fire-fighting special double-flame-retardant cable with strong anti-interference capability according to claim 1, characterized in that: the outer surface of the cable cores (13) is sleeved with a polyethylene insulating sleeve (15).

5. The fire-fighting special double-flame-retardant cable with strong anti-interference capability according to claim 1, characterized in that: the cable cores (13) are spirally and symmetrically stranded.

6. The fire-fighting special double-flame-retardant cable with strong anti-interference capability according to claim 1, characterized in that: the tensile steel cable (4) is formed by twisting a plurality of strands of copper plated wires sprayed with acrylic fibers.

Technical Field

The invention relates to the technical field of cables, in particular to a fire-fighting special double-flame-retardant cable with strong anti-interference capability.

Background

At present domestic power supply cable for fire control, mostly use and provide the electric energy at complicated high temperature scene of a fire for fire control apparatus, in order to guarantee the normal circular telegram of cable in the high temperature scene of a fire, generally need install fire-retardant protective sheath additional in the outside of cable, advance the separation to the outside flame in scene of a fire, but under the complicated environment in scene of a fire the inside wire of cable is easy to be loaded excessively and is leaded to cable from inside burning, even blow the cable, and the cable in the scene of a fire receives external disturbance easily, such as electrostatic induction, electromagnetic induction and conductive induction, the cable that reason should conduct correct signal itself also can become the emergence source of interference, influence fire control work.

Disclosure of Invention

The invention aims to provide a fire-fighting special double-flame-retardant cable with strong anti-interference capability, and aims to solve the problems that a wire in the cable proposed in the background art is easy to be overloaded, so that the cable is burnt from the inside and is easy to be interfered by the outside.

In order to achieve the purpose, the invention provides the following technical scheme: a fire-fighting special double-flame-retardant cable with strong anti-interference capability comprises an outer protective sleeve, wherein an asbestos fiber sleeve is inserted into the inner wall of the outer protective sleeve, the inner wall of the asbestos fiber sleeve is inserted with a glass fiber sleeve, the middle part of the inner cavity of the glass fiber sleeve is provided with a tensile steel cable, the outer surface of the tensile steel cable is sleeved with flame-retardant silica gel, the periphery of the outer surface of the flame-retardant silica gel is provided with snap rings, a group of cable bodies are arranged at the outer sides of the snap rings, a basalt fiber filling layer is arranged on the outer surface of each group of cable bodies, the inner cavity of the cable body is provided with a ceramic fiber filling layer, the inner wall of the ceramic fiber filling layer is provided with a polyethylene inner sheath, the inner wall of the polyethylene inner sheath is spliced with a polyester tape winding layer, the inner wall of the polyester tape winding layer is spliced with a tinned anaerobic soft copper wire braided shielding layer, and the inner wall of the tinned anaerobic soft copper wire braided shielding layer is spliced with a plurality of cable cores.

Preferably, the middle part of the flame-retardant silica gel is provided with a plurality of through holes.

Preferably, the middle parts of the cable cores are provided with axial ropes.

Preferably, the outer surfaces of a plurality of cable cores are sleeved with polyethylene insulating sleeves.

Preferably, a plurality of cable cores are spirally and symmetrically stranded.

Preferably, the tensile steel cable is formed by twisting a plurality of strands of copper plated wires sprayed with acrylic fibers.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the plurality of cable cores are symmetrically hinged in a star shape, the interference of an external magnetic field to the cable cores can be reduced by the connection form of the symmetrical star-shaped hinge, the insulating sleeve is sleeved outside the cable cores, the polyethylene insulating sleeve prevents the cable cores from being damaged due to the increase of the resistance of the cable cores caused by the movement of abrasion current, and the flame-retardant filling layer can bear high temperature, prevent the cable from being damaged from the inside and greatly enhance the anti-interference performance of the cable;

according to the invention, the rope shaft is arranged between the cable cores, so that the obstruction between the cable cores can be reduced, the capacitance can be reduced, and meanwhile, the tensile resistance of the cable cores can be enhanced.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1. an outer protective sheath; 2. an asbestos fiber sleeve; 3. a glass fiber sleeve; 4. a tensile steel cable; 5. flame-retardant silica gel; 6. a snap ring; 7. a cable body; 8. a basalt fiber fill layer; 9. a ceramic fiber filler layer; 10. a polyethylene inner sheath; 11. a polyester tape wrap; 12. a tinned anaerobic soft copper wire braided shielding layer; 13. a cable core; 14. a shaft rope; 15. polyethylene insulating sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a fire-fighting special double-flame-retardant cable with strong anti-interference capability comprises an outer protective sleeve 1 made of flame-retardant polyethylene and having an external flame-retardant effect, wherein an asbestos fiber sleeve 2 is inserted into the inner wall of the outer protective sleeve 1 to improve the external flame-retardant capability of the fire-fighting special-purpose double-flame-retardant cable, a glass fiber sleeve 3 is inserted into the inner wall of the asbestos fiber sleeve 2 and has the characteristics of high temperature resistance, flame retardance, insulation and the like, a tensile steel cable 4 is arranged in the middle of an inner cavity of the glass fiber sleeve 3 to improve the tensile resistance, flame-retardant silica gel 5 is sleeved on the outer surface of the tensile steel cable 4 to avoid internal combustion, snap rings 6 are arranged around the outer surface of the flame-retardant silica gel 5, a group of cable bodies 7 are arranged outside the snap rings 6, the total number of the cable bodies 7 is four, a basalt fiber filling layer 8 is arranged on the outer surface of the group of cable bodies 7, the fire-fighting special-purpose double-flame-retardant cable has high-retardant and high-resistant and flame-retardant effects, and the highest bearing temperature is 1000 ℃, the inner cavity of the flame-retardant cable body 7 is provided with the ceramic fiber filling layer 9, the damage caused by high-temperature combustion in the cable body 7 is avoided, the inner wall of the ceramic fiber filling layer 9 is provided with the polyethylene inner sheath 10, the inner wall of the polyethylene inner sheath 10 is spliced with the polyester tape winding layer 11, the inner wall of the polyester tape winding layer 11 is spliced with the tinned anaerobic soft copper wire braided shielding layer 12, the anti-interference capability of the cable is enhanced, and the inner wall of the tinned anaerobic soft copper wire braided shielding layer 12 is spliced with the plurality of cable cores 13.

Referring to fig. 1, the middle of the flame retardant silica gel 5 is provided with a plurality of through holes, so that heat emitted from the cable body 7 can be diffused, and the heat of the flame retardant silica gel 5 can be reduced;

referring to fig. 1, the central portions of the cable cores 13 are provided with the axial ropes 14, so that capacitance between the cable cores 13 is reduced, and meanwhile, tensile resistance of the cable cores 13 can be enhanced;

referring to fig. 1, the outer surfaces of the plurality of cable cores 13 are sleeved with polyethylene insulating sleeves 15, so that the cable cores 13 are prevented from being electrically contacted, the resistance of the cable body 7 is increased, and the heating speed of the cable cores 13 is increased;

referring to fig. 1, a plurality of cable cores 13 are twisted spirally and symmetrically and hinged in a star shape, so that the anti-interference capability of the cable cores 13 can be enhanced;

referring to fig. 1, the tensile steel cable 4 is formed by twisting a plurality of strands of copper-plated filaments sprayed with acrylic fibers, so as to enhance the tensile resistance and flame retardancy of the tensile steel cable 4.

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.