CN215342026U

CN215342026U - Halogen-free low-smoke flame-retardant fire-resistant special control cable

Info

Publication number: CN215342026U
Application number: CN202121687320.0U
Authority: CN
Inventors: 孙振; 张成和; 张成兵; 曾玉松; 曾玉山
Original assignee: YANGZHOU ZHONGNENG CABLE CO Ltd
Current assignee: YANGZHOU ZHONGNENG CABLE CO Ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-12-28
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a halogen-free low-smoke flame-retardant fire-resistant special control cable in the technical field of control cables, which comprises five groups of cable cores with the same structure, wherein the outer walls of the five groups of cable cores are respectively coated with a filling layer, the outer wall of the filling layer is coated with an inner temperature insulation layer, the outer wall of the inner temperature insulation layer is coated with a total shielding layer, the outer wall of the total shielding layer is coated with an outer flame-retardant layer, the outer wall of the outer flame-retardant layer is coated with an armor layer, a sub-shielding layer is arranged on the outer ring of the inner flame-retardant layer, so that mutual interference of signals between the cable cores can be prevented, the external interference resistance and the shielding capability of the cable can be improved by arranging the inner shielding layer and the outer shielding layer, and meanwhile, the multi-layer shielding protection can be carried out on the cable by an isolation sleeve doped with metal powder.

Description

Halogen-free low-smoke flame-retardant fire-resistant special control cable

Technical Field

The utility model relates to the technical field of control cables, in particular to a halogen-free low-smoke flame-retardant fire-resistant special control cable.

Background

The cable is an electric energy or signal transmission device, usually comprises several or several groups of wires, because the different environment that the cable uses, the specification requirement to the cable is also different, especially special cable, current special control cable only adopts a layer of copper wire braid layer as the shielding layer, its interference killing feature and shielding effect can't guarantee the stable transmission of signal, for this reason, we propose a kind of halogen-free low smoke fire-retardant fire-resistant special control cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a halogen-free low-smoke flame-retardant fire-resistant special control cable to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a there is not steamed fire-retardant fire-resistant special type control cable of low cigarette of cigarette, includes five cable cores that the structure is the same, five groups the equal cladding of outer wall of cable core has the filling layer, the outer wall cladding of filling layer has interior heat insulating layer, the outer wall cladding of interior heat insulating layer has total shielding layer, total shielding layer's outer wall cladding has outer fire-retardant layer, outer fire-retardant layer's outer wall cladding has the armor, the outer wall cladding of armor has the restrictive coating.

Preferably, the cable core is including dividing the shielding layer, divide the shielding layer cladding on the outer wall of fire-retardant layer including, the inner wall cladding on interior fire-retardant layer has the insulating layer, and the inner wall of insulating layer all wraps the conductor.

Preferably, the outer wall of the sub-shielding layer is connected with the filling layer, and the insulating layer and the conductor are both provided with two groups.

Preferably, the outer ring of the sheath layer is coated with an anticorrosive coating, and the thickness of the anticorrosive coating is zero five millimeters.

Preferably, total shielding layer includes the internal shield layer, the outer wall cladding on internal shield layer has the separation sleeve, the outer wall cladding of separation sleeve has the external shield layer, the outer wall cladding of external shield layer has outer heat insulation layer, the outer wall coating on outer heat insulation layer has protective coating, and protective coating's thickness is three millimeters at zero point.

Preferably, the inner shielding layer is coated on the outer wall of the inner heat insulation layer, and the outer flame retardant layer is coated on the outer wall of the protective coating.

Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses an including the outer lane of fire-retardant layer set up branch shielding layer, can prevent signal interference of each other between the cable core, through setting up internal shield layer and outer shielding layer, can improve the cable anti external disturbance and shielded ability, simultaneously through the spacer sleeve that mixes there is metal powder, can carry out multilayer shielding protection to the cable, through setting up internal temperature insulating layer and outer temperature insulating layer, can improve the heat-proof effect of cable, avoid high temperature to influence the internal shield layer, spacer sleeve and outer shielding layer, through setting up protective coating, can further protect the outer shielding layer.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a cable core according to the present invention;

FIG. 3 is a schematic view of the total shielding layer structure of the present invention.

In the figure: 1. a cable core; 11. dividing a shielding layer; 12. an inner flame retardant layer; 13. an insulating layer; 14. a conductor; 2. a filling layer; 3. an inner insulating layer; 4. a total shielding layer; 41. an inner shield layer; 42. an isolation sleeve; 43. an outer shield layer; 44. an outer thermal insulation layer; 45. a protective coating; 5. an outer flame retardant layer; 6. an armor layer; 7. a sheath layer.

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.

A halogen-free low-smoke flame-retardant fire-resistant special control cable, please refer to fig. 1 to 3, comprising five cable cores 1 with the same structure, wherein the outer walls of the five cable cores 1 are all wrapped with a filling layer 2, the filling layer 2 is made of halogen-free low-smoke cross-linked polyolefin material and plays a role of flame retardance and fire resistance, the outer wall of the filling layer 2 is wrapped with an inner heat insulation layer 3, the inner heat insulation layer 3 is made of heat insulation material and can isolate heat, the outer wall of the inner heat insulation layer 3 is wrapped with a total shielding layer 4, the outer wall of the total shielding layer 4 is wrapped with an outer flame-retardant layer 5, the outer flame-retardant layer 5 is made of halogen-free low-smoke cross-linked polyolefin material and further plays a role of flame retardance and fire resistance, the outer wall of the outer flame-retardant layer 5 is wrapped with an armor layer 6, the armor layer 6 is made of steel strip and improves the structural strength of the cable, the outer wall of the armor layer 6 is wrapped with a sheath layer 7, and the sheath layer 7 is made of polyvinyl chloride material, the function of protecting the internal structure of the cable is achieved.

Referring to fig. 1 to 2, the cable core 1 includes a sub-shielding layer 11, the sub-shielding layer 11 is woven by a copper mesh, which can prevent signals between cable cores from interfering with each other, the sub-shielding layer 11 is coated on an outer wall of an inner flame-retardant layer 12, the inner flame-retardant layer 12 is made of an inorganic mineral, and the inorganic mineral is a magnesium oxide material, which mainly can retard flame and suppress smoke release, and can prevent the cable core 1 from firing and affecting other cable cores 1, the inner wall of the inner flame-retardant layer 12 is coated with an insulating layer 13, and inner walls of the insulating layer 13 are coated with conductors 14, the insulating layer 13 is made of a cross-linked polyethylene material, the outer wall of the sub-shielding layer 11 is connected with a filling layer 2, and the insulating layer 13 and the conductors 14 are provided with two sets.

Referring to fig. 1, an outer ring of the sheath layer 7 is coated with an anticorrosive layer, and the thickness of the anticorrosive layer is zero five millimeters.

Referring to fig. 1 and 3, the total shielding layer 4 includes an inner shielding layer 41, the inner shielding layer 41 is woven by a copper mesh, an outer wall of the inner shielding layer 41 is covered with an isolation sleeve 42, the isolation sleeve 42 is formed on the inner shielding layer 41 by a thermoplastic machine and is doped with metal powder inside, an outer wall of the isolation sleeve 42 is covered with an outer shielding layer 43, the outer shielding layer 43 is made of aluminum foil, an outer wall of the outer shielding layer 43 is covered with an outer thermal insulation layer 44, an outer wall of the outer thermal insulation layer 44 is coated with a protective coating 45, a thickness of the protective coating 45 is three millimeters, the protective coating 45 is coated with a thermal insulation coating, the outer thermal insulation layer 44 and the inner thermal insulation layer 3 are both made of a thermal insulation material, the inner shielding layer 41 is covered on an outer wall of the inner thermal insulation layer 3, the outer flame retardant layer 5 is covered on an outer wall of the protective coating 45, and by the inner shielding layer 41 and the outer shielding layer 43, the capability of the cable against external interference and shielding can be improved, meanwhile, the cable can be shielded and protected in multiple layers through the isolating sleeve 42 doped with metal powder, the inner insulating layer 3 and the outer insulating layer 44 are arranged, the insulating effect of the cable can be improved, the inner shielding layer 41, the isolating sleeve 42 and the outer shielding layer 43 are prevented from being influenced by high temperature, and the outer shielding layer 43 can be further protected through the protective coating 45.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a there is not steamed fire-retardant fire-resistant special control cable of low cigarette, includes five cable cores (1) that the structure is the same, its characterized in that: five groups the outer wall of cable core (1) all the cladding has filling layer (2), the outer wall cladding of filling layer (2) has interior heat insulating layer (3), the outer wall cladding of interior heat insulating layer (3) has total shield (4), the outer wall cladding of total shield (4) has outer fire-retardant layer (5), the outer wall cladding of outer fire-retardant layer (5) has armor (6), the outer wall cladding of armor (6) has restrictive coating (7).

2. The halogen-free low-smoke flame-retardant fire-resistant special control cable according to claim 1, characterized in that: the cable core (1) is including dividing shielding layer (11), divide on the outer wall of flame retardant coating (12) including shielding layer (11) cladding, the inner wall cladding of interior flame retardant coating (12) has insulating layer (13), and the inner wall of insulating layer (13) all wraps conductor (14).

3. The halogen-free low-smoke flame-retardant fire-resistant special control cable according to claim 2, characterized in that: the outer wall of the sub-shielding layer (11) is connected with the filling layer (2), and the insulating layer (13) and the conductor (14) are provided with two groups.

4. The halogen-free low-smoke flame-retardant fire-resistant special control cable according to claim 1, characterized in that: the outer lane coating of restrictive coating (7) has the anticorrosive coating, and the thickness of anticorrosive coating is five millimeters at zero point.

5. The halogen-free low-smoke flame-retardant fire-resistant special control cable according to claim 1, characterized in that: total shield layer (4) include internal shield layer (41), the outer wall cladding of internal shield layer (41) has separation sleeve (42), the outer wall cladding of separation sleeve (42) has external shield layer (43), the outer wall cladding of external shield layer (43) has outer thermal-insulated layer (44), the outer wall coating on outer thermal-insulated layer (44) has protective coating (45), and the thickness of protective coating (45) is three millimeters at zero point.

6. The halogen-free low-smoke flame-retardant fire-resistant special control cable according to claim 5, characterized in that: the inner shielding layer (41) is coated on the outer wall of the inner heat insulation layer (3), and the outer flame-retardant layer (5) is coated on the outer wall of the protective coating (45).