CN217982898U

CN217982898U - Halogen-free low-smoke flame-retardant B1-level fire-resistant control cable

Info

Publication number: CN217982898U
Application number: CN202221743870.4U
Authority: CN
Inventors: 金霞; 王秀字; 徐忠甫
Original assignee: Shanghai Yeshen Technology Co ltd
Current assignee: Shanghai Yeshen Technology Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-12-06
Anticipated expiration: 2032-07-07

Abstract

The utility model discloses a there is not steamed low fire-retardant B1 level fire-resistant control cable of cigarette, which comprises a conductor, the insulating tape, the filling layer, the band layer, the restrictive coating, the insulating tape sets up the skin at the conductor, the filling layer sets up the outside at the insulating tape, the band layer sets up the outside at the filling layer, the restrictive coating sets up the outside at the band layer, the restrictive coating has good fire resistance and extrudes the processability, no halogen acid gas emits during the burning, toxicity and corrosive gas release amount are extremely low, the filling layer is the mineral substance fire prevention filling material layer, can completely cut off oxygen, has fine flame retardant efficiency, the high fire-retardant glass fiber weaving layer that separates the inside cooperation of fire layer has good heat resistance, can strengthen thermal-insulated performance, through strengthening the setting of strip, the holistic toughness of cable has been improved, can further play the guard action to inside conductor, bayonet socket offered through the symmetry can also can be two-way spacing when agreeing with the filling layer, it takes off to prevent that the insulating tape from leading to inside inoxidizing and conductor pine.

Description

Halogen-free low-smoke flame-retardant B1-level fire-resistant control cable

Technical Field

The utility model relates to the technical field of cables, specifically a there is not steamed low fire-retardant B1 level fire-resistant control cable of cigarette.

Background

The control cable is an electric energy or signal transmission device, usually consists of several or several groups of wires, wherein the control cable is suitable for industrial and mining enterprises, energy transportation departments, and is used for occasions of controlling and protecting circuits with the AC rated voltage of 450/750V or below, and the like. At present, the model of a low-smoke halogen-free control cable specified by the national standard GB/T9330-2008 is WDZ-KYJY, cross-linked polyethylene is adopted for insulation, and low-smoke halogen-free polyolefin is adopted for a sheath.

The defect exists in the arbitrary nature of current cable on the one hand, buries in the cable of underground often can appear the construction error and dig the cable and lead to catching fire, and the outer insulating layer of current cable conductor is direct cover to inlay in protection filling layer inner chamber in addition, appears the pine phenomenon of taking off easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a there is not steamed low fire-retardant B1 level fire-resistant control cable of cigarette to the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a there is not steamed fire-retardant B level fire-resistant control cable of low cigarette of cigarette, includes conductor, insulating tape, filling layer, band layer, restrictive coating, the insulating tape sets up the skin at the conductor, the filling layer sets up the outside at the insulating tape, the band layer sets up the outside at the filling layer, the restrictive coating sets up the outside at the band layer.

Preferably, the inner cavity of the insulating tape is provided with a high flame retardant tape, the inner cavity of the high flame retardant tape is provided with a protective woven layer, the inner cavity of the protective woven layer is provided with a fireproof layer, the outer ring of the fireproof layer is provided with a groove, the inner cavity of the groove is provided with a reinforcing strip, and the inner layer of the fireproof layer is provided with an inorganic mineral insulating layer.

Preferably, the conductor sleeve is embedded in the inner cavity of the inorganic mineral insulating layer.

Preferably, the outer wall of insulating tape is provided with the card strip, the bayonet socket has been seted up on the card strip, and adjacent bayonet socket size is the same, and is reverse opposite.

Preferably, the sheath layer is a low-smoke halogen-free flame-retardant sheath.

Preferably, the filling layer is a mineral fireproof filling material layer.

Preferably, the insulating tape is a cross-linked polyethylene insulating halogen-free low-smoke polyolefin tape.

Preferably, the protective woven layer is a glass fiber woven layer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this there is not steamed low fire-retardant B1 level fire-resistant control cable of cigarette, the restrictive coating is by the polyolefin as the base material, be equipped with the mixed formation of auxiliary material such as special type halogen-free flame retardant, smoke suppressor, anti-oxidant, rheological agent, have good fire resistance and extrude the processibility, there is not gaseous the giving off of haloid during the burning, poisonous and corrosive gas release volume is extremely low, the filling layer is the mineral matter fire prevention filling bed of material, its mixed closely knit degree is high, can completely insulate oxygen, reach fine flame retardant efficiency then, and can slow down the ageing speed in internal insulation area through insulating oxygen, the extension is to the protection and the life of internal conductor.

2. This there is not steamed low fire-retardant B1 level fire-resistant control cable of cigarette, high fire-retardant fire prevention layer comprises fire-retardant powder, and the inside glass fiber weaving layer of cooperation has good heat resistance, can strengthen thermal-insulated fire behavior, through the setting of strengthening the strip, has improved the holistic toughness of cable, can further play the guard action to inside conductor.

3. This there is not steamed low fire-retardant B1 level fire-resistant control cable of cigarette, the bayonet socket on the card strip is the slope form to adjacent bayonet socket size is the same, and is reverse opposite, so that the bayonet socket can closely agree with the filling layer better, and the bayonet socket that the symmetry was seted up can also be two-way spacing when agreeing with the filling layer, prevents that the insulating tape from leading to inside inoxidizing coating and conductor pine to take off.

Drawings

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

FIG. 2 is a schematic view of the insulation tape and its internal structure;

fig. 3 is a schematic view of the structure of the protective braid of the present invention;

fig. 4 is the schematic view of the structure of the insulating tape and the outer wall clamping strip of the present invention.

In the figure: 1. a conductor; 2. an insulating tape; 21. a high flame retardant tape; 22. a protective braid layer; 23. a fire-resistant layer; 24. a groove; 25. a reinforcing strip; 26. an inorganic mineral insulating layer; 3. a filling layer; 4. a belting layer; 5. a sheath layer; 6. clamping the strip; 61. and (4) a bayonet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The embodiment is as follows: referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a there is not steamed fire-retardant B1 level fire-resistant control cable of low smoke, including conductor 1, insulating tape 2, filling layer 3, band layer 4, restrictive coating 5, insulating tape 2 sets up the skin at conductor 1, filling layer 3 sets up the outside at insulating tape 2, band layer 4 sets up the outside at filling layer 3, restrictive coating 5 sets up the outside at band layer 4, cable band layer 4 is the thinner insulating tape of one deck, with inside filling layer 3 parcel closely inside, 1 nests of conductor in the inner chamber of inorganic mineral insulating layer 26.

Furthermore, the sheath layer 5 is a low-smoke halogen-free flame-retardant sheath, the filling layer 3 is a mineral fireproof filling material layer, the mixing compactness is high, oxygen can be fully isolated, and then a good flame-retardant effect is achieved, the insulating tape 2 is a cross-linked polyethylene insulating halogen-free low-smoke polyolefin tape, the sheath layer 5 is formed by mixing polyolefin serving as a base material and auxiliary materials such as a special halogen-free flame retardant, a smoke suppressor, an antioxidant and a rheological agent, and has good flame retardance and extrusion processability, no halogen acid gas is emitted during combustion, and the release amount of toxic and corrosive gas is extremely low.

Further, the inner chamber of insulating zone 2 is provided with high fire-retardant area 21, and the inner chamber of high fire-retardant area 21 is provided with protective weaving layer 22, and protective weaving layer 22's inner chamber is provided with flame retardant coating 23, and the outer lane of flame retardant coating 23 is seted up flutedly 24, and the inner chamber of recess 24 is provided with enhancement strip 25, and the inlayer of flame retardant coating 23 is provided with inorganic mineral insulating layer 26, and protective weaving layer 22 is the glass fiber weaving layer.

In this embodiment, the high flame-retardant fire-insulating layer 21 is formed by flame-retardant powder, the glass fiber woven layer inside the high flame-retardant fire-insulating layer has good heat resistance, the heat-insulating and flame-retardant performance can be enhanced, the overall toughness of the cable is improved by the arrangement of the reinforcing strips 25, and the conductor 1 inside the high flame-retardant fire-insulating layer can be further protected.

Further, the outer wall of the insulating tape 2 is provided with a clamping strip 6, a bayonet 61 is formed in the clamping strip 6, and the adjacent bayonets 61 are the same in size and are opposite in reverse.

Bayonet 61 on the card strip 6 is the slope form to adjacent bayonet 61 size is the same, and is reverse opposite, so that bayonet 61 can closely agree with filling layer 3 better, and bayonet 61 that the symmetry was seted up can also two-way spacing when agreeing with filling layer, prevents that insulating tape 2 from leading to inside inoxidizing coating and conductor 1 pine to take off.

When the halogen-free low-smoke flame-retardant B1-level fire-resistant control cable works: sheath layer 5 is by polyolefin as the base material, be equipped with the mixed formation of auxiliary material such as special type halogen-free flame retardant, smoke suppressor, anti-oxidant, rheological agent, good fire resistance and extrusion processing nature have, the halogen-free acid gas of during the burning is discharged, toxic and corrosive gas release amount is extremely low, filling layer 3 is the mineral substance fire prevention filling material layer, its mixed compactness is high, can completely cut off oxygen, reach fine flame retardant efficiency then, high fire-retardant fire barrier layer 21 comprises fire-retardant powder, the inside glass fiber weaving layer of cooperation has good heat resistance, can strengthen thermal-insulated fire behaviour, setting through stiffener 25, the holistic toughness of cable has been improved, can further play the guard action to inside conductor 1.

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.

Claims

1. The utility model provides a there is not steamed fire-retardant B1 level fire-resistant control cable of low cigarette, includes conductor (1), insulating tape (2), filling layer (3), band layer (4), restrictive coating (5), its characterized in that: the insulating tape (2) is arranged on the outer layer of the conductor (1), the filling layer (3) is arranged on the outer portion of the insulating tape (2), the wrapping layer (4) is arranged on the outer portion of the filling layer (3), and the sheath layer (5) is arranged on the outer portion of the wrapping layer (4).

2. The halogen-free low-smoke flame-retardant B1-level fire-resistant control cable according to claim 1, characterized in that: the inner chamber of insulating zone (2) is provided with high fire-retardant area (21), the inner chamber of high fire-retardant area (21) is provided with protective braid (22), protective braid (22)'s inner chamber is provided with flame retardant coating (23), recess (24) are seted up to the outer lane of flame retardant coating (23), the inner chamber of recess (24) is provided with stiffener (25), the inlayer of flame retardant coating (23) is provided with inorganic mineral insulating layer (26).

3. The halogen-free low-smoke flame-retardant B1-level fire-resistant control cable according to claim 1, characterized in that: the conductor (1) is embedded in the inner cavity of the inorganic mineral insulating layer (26).

4. The halogen-free low-smoke flame-retardant B1-level fire-resistant control cable according to claim 1, characterized in that: the outer wall of insulating tape (2) is provided with card strip (6), bayonet socket (61) have been seted up on card strip (6), and adjacent bayonet socket (61) size is the same, opposite direction.

5. The halogen-free low-smoke flame-retardant B1-level fire-resistant control cable according to claim 1, characterized in that: the sheath layer (5) is a low-smoke halogen-free flame-retardant sheath.

6. The halogen-free low-smoke flame-retardant B1-level fire-resistant control cable according to claim 1, characterized in that: the filling layer (3) is a mineral fireproof filling material layer.

7. The halogen-free low-smoke flame-retardant B1-level fire-resistant control cable according to claim 1, characterized in that: the insulating tape (2) is a cross-linked polyethylene insulating halogen-free low-smoke polyolefin tape.

8. The halogen-free low-smoke flame-retardant B1-level fire-resistant control cable according to claim 2, characterized in that: the protective woven layer (22) is a glass fiber woven layer.