CN214203291U

CN214203291U - Low-smoke halogen-free flame-retardant fire-resistant cable

Info

Publication number: CN214203291U
Application number: CN202120484202.3U
Authority: CN
Inventors: 朱进; 钟曙光
Original assignee: Chongqing Seven Security Wire And Cable Group Co ltd
Current assignee: Chongqing Seven Security Wire And Cable Group Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-09-14
Anticipated expiration: 2031-03-05

Abstract

The utility model relates to the technical field of cables, concretely relates to fire-retardant fire resisting cable of low smoke and zero halogen, including a plurality of conductor bundles that the transposition is as an organic whole, each conductor bundle all winds package PPD area outward, PPD outband winding cladding has fire-resistant mica tape, fire-resistant mica outband sets up conductor insulating layer, every all be filled with fire-retardant filler between the conductor bundle, the cladding has fire-retardant band outside a plurality of conductor bundles that fire-retardant filler parcel was filled, the outer parcel one deck explosion-proof layer in fire-retardant band, the explosion-proof layer is equipped with the fire-retardant inner sheath of low smoke and zero halogen outward, the fire-retardant inner sheath of low smoke and zero halogen is equipped with the armor outward. The utility model has the characteristics of do not contain halogen, the volume of giving off smoke is low, be fit for the fire-retardant separation sleeve that is used for the cable, can not produce toxic gas harm personal safety, have the feature of environmental protection.

Description

Low-smoke halogen-free flame-retardant fire-resistant cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to fire-retardant fire resisting cable of low smoke and zero halogen.

Background

Along with the frequent occurrence of fire accidents, people continuously deepen the understanding of the fire hazard risk of the electric wire and the electric cable, and the requirements of relevant departments on the performances of fire prevention, flame retardance and the like of the electric wire and the electric cable are higher and higher. The cable fire disaster has the characteristics of fast spread, difficult fire fighting, secondary hazard generation, long recovery time and the like, and can bring huge loss to national economy and the lives and properties of people. A large amount of dense smoke and halogen acid gas can be released when the cable is burnt, the halogen acid gas has corrosive harm to surrounding electrical equipment, and rescuers can put out a fire by approaching the scene with a gas mask. Therefore, more severe operating conditions are provided for the flame retardant property, the fireproof property and the safety and reliability of the wires and cables. If the fire-fighting elevator and the fire pump are in fire prevention, explosion prevention, strong overload capacity and long service life, the fire-fighting elevator and the fire pump need to be kept in normal operation for a certain time under the condition of fire, and the cable has special requirements of low smoke, low halogen and low toxicity after combustion, even no smoke, no halogen, no toxicity and the like. The fire-retardant and fire-proof measures of the cable are important means for reducing the fire delay of the cable, and the key point is that the fire-retardant and fire-proof measures are mainly used for preventing fire, and various fire-retardant cables, fire-resistant cables and fire-proof cables are widely applied.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a fire-retardant fire resisting cable of low smoke and zero halogen solves above difficult problem.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a fire-retardant fire resisting cable of low smoke and zero halogen, includes a plurality of conductor bundles of transposition as an organic whole, each conductor bundle all winds package PPD area outward, the outband winding cladding of PPD has fire-resistant mica tape, fire-resistant mica outband sets up the conductor insulation layer, every all be filled with fire-retardant filler between the conductor bundle, the outer cladding of a plurality of conductor bundles of fire-retardant filler parcel packing has fire-retardant band, the outer one deck explosion-proof layer that wraps up in fire-retardant band, the explosion-proof layer is equipped with the fire-retardant inner sheath of low smoke and zero halogen outward, the fire-retardant inner sheath of low smoke and zero halogen is equipped with the armor outward.

Preferably, the conductor bundles are 10-60 copper wire bundles.

Preferably, the fire-resistant mica tape comprises a mica base tape, wherein an epoxy resin adhesive layer is arranged on the inner side of the mica base tape, and a glass fiber layer is arranged on the inner side of the epoxy resin adhesive layer.

Preferably, the conductor insulating layer is made of ethylene propylene rubber.

Preferably, the material of the flame-retardant filler is an alkali-free glass fiber material.

Preferably, the flame-retardant wrapping belt is made of fireproof silica gel.

Preferably, the explosion-proof layer is a low-smoke halogen-free polyurethane layer.

Preferably, the halogen-free low-smoke flame-retardant inner sheath is made of black low-smoke halogen-free oxygen-insulating sheath material.

Preferably, the armor layer is double steel belt armor or thin round steel wire armor.

A low smoke zero halogen flame retardant fire resistant cable has the following technical effects:

the cable has good physical protection capability, and substantial damage to the cable caused by pulling, scratching and the like can be avoided through armor; the insulating layer is made of ethylene propylene rubber, and is moisture-resistant and oxidation-resistant; a PPD (polyphenylene sulfide) resistant belt, a fire-resistant mica tape, a conductor insulating layer, a flame-retardant filler, a flame-retardant wrapping belt, an explosion-proof layer and a halogen-free low-smoke flame-retardant inner sheath are sequentially arranged between the conductor bundle and the armor layer, so that the cable has good flame retardance and fire resistance, prevents the whole structure of the cable from being heated and deformed, does not generate halogen-containing toxic gas during combustion, only has a small amount of smoke, and reduces the harm to a human body; the explosion-proof layer is made of low-smoke halogen-free polyurethane, so that the safety of workers can be effectively protected under the condition that the cable is inspected and overhauled, sparks, electric arcs and high heat temperature caused by misoperation cannot cause damage to inspectors or cause explosion, the insulated conductor bundle can be effectively protected from being damaged under the condition of general explosion, and the problem that the communication is not smooth due to insulation rupture of the cable when small-range explosion occurs is effectively solved; under the condition that the cable is inspected and overhauled, the safety of personnel can be effectively protected, and sparks, electric arcs and high heat temperature caused by misoperation can not cause damage or explosion to inspection personnel; the PPD tape is wound outside the conductor bundles, so that gaps among the conductor bundles are small, the tensile strength of the cable is good, the length of the cable is long, the shutdown times and the tape breaking times can be reduced in the cabling and armoring process, the production cost and the working strength of an operator can be reduced, the PPD polypropylene tape is easier to store than the PVC tape, the price is low, the production cost is saved, and meanwhile, the production efficiency is improved; the halogen-free low-smoke halogen-free flame-retardant inner sheath is prepared by taking polyolefin resin as a base material, adding high-quality and efficient halogen-free flame retardant and other processing aids, mixing, plasticizing and granulating.

Drawings

Fig. 1 is a schematic structural view of a low-smoke halogen-free flame-retardant fire-resistant cable according to the present invention;

fig. 2 is a schematic structural diagram of the fire-resistant mica tape in fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

as shown in fig. 1-2, a low-smoke halogen-free flame-retardant fire-resistant cable includes a plurality of conductor bundles 1 stranded as a whole, in this embodiment, the conductor bundles 1 are 10-60 copper wire bundles, and there are 4 conductor bundles in total. Each conductor bundle 1 is all around package PPD area 2 outward, PPD area 2 outer winding cladding has fire resistant mica tape 3, fire resistant mica tape 3 is provided with conductor insulation layer 4 outward, every all be filled with fire-retardant filler 5 between the conductor bundle 1, the outer cladding of 1 of a plurality of conductor bundles of 5 parcel packing of fire-retardant filler has fire-retardant band 6, 6 outer parcel one deck explosion-proof layers 7 in fire-retardant band, explosion-proof layer 7 is equipped with halogen-free low fire-retardant inner sheath 8 of cigarette outward, 8 outer armor 9 that are equipped with of halogen-free low fire-retardant inner sheath of cigarette.

In this embodiment, the fire-resistant mica tape 3 includes a mica base tape 3a, an epoxy resin adhesive layer 3b is disposed on the inner side of the mica base tape 3a, and a glass fiber layer 3c is disposed on the inner side of the epoxy resin adhesive layer 3 b.

In this embodiment, the conductor insulation layer 4 is made of ethylene propylene rubber.

In this embodiment, the material of the flame retardant filler 5 is an alkali-free glass fiber material.

In this embodiment, the fire-retardant wrapping tape 6 is made of fire-retardant silica gel.

In this embodiment, the explosion-proof layer 7 is a low-smoke halogen-free polyurethane layer.

In this embodiment, the halogen-free low-smoke flame-retardant inner sheath 8 is made of black low-smoke halogen-free oxygen-insulating sheath material.

The halogen-free low-smoke halogen-free flame-retardant inner sheath is made of black low-smoke halogen-free oxygen-insulating sheath materials, is prepared by taking polyolefin resin as a base material, adding a high-quality and efficient halogen-free flame retardant and other processing aids, and mixing, plasticizing and granulating the mixture, is the prior art, and can refer to a first black low-smoke halogen-free isolation sheath and a second black low-smoke halogen-free isolation sheath in a patent with the patent application number of CN201921262043.1 and the patent name of 'a cross-linked polyethylene insulation low-smoke halogen-free flame-retardant power cable'.

In this embodiment, the armor layer 9 is a double steel tape armor or a thin round steel wire armor.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.

Claims

1. The utility model provides a fire-retardant fire resisting cable of low smoke and zero halogen, a serial communication port, including a plurality of conductor bundles (1), each conductor bundle (1) is all around package PPD area (2) outward, PPD area (2) outer winding cladding has fire-resistant mica tape (3), fire-resistant mica tape (3) are equipped with conductor insulating layer (4) outward, every all be filled with fire-retardant filler (5) between conductor bundle (1), a plurality of conductor bundles (1) outer cladding that fire-retardant filler (5) parcel was filled has fire-retardant band (6), fire-retardant band (6) outer parcel one deck explosion-proof layer (7), explosion-proof layer (7) are equipped with halogen-free low smoke flame-retardant inner sheath (8) outward, halogen-free low smoke flame-retardant inner sheath (8) are equipped with armor (9) outward, the inner layer structure of cable is by outer structural whole cladding in proper order.

2. A low smoke zero halogen flame retardant fire resistant cable according to claim 1 characterized in that said conductor bundle (1) is a 10-60 copper bundle.

3. The low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, wherein the fire-resistant mica tape (3) comprises a mica tape (3a), an epoxy resin adhesive layer (3b) is arranged on the inner side of the mica tape (3a), and a glass fiber layer (3c) is arranged on the inner side of the epoxy resin adhesive layer (3 b).

4. The low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, wherein the conductor insulation layer (4) is made of ethylene propylene rubber.

5. The low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, wherein the flame-retardant filler (5) is made of alkali-free glass fiber material.

6. The low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, wherein the flame-retardant wrapping tape (6) is made of fireproof silica gel.

7. The low smoke zero halogen flame retardant fire resistant cable according to claim 1, characterized in that the explosion proof layer (7) is a low smoke zero halogen polyurethane layer.

8. The low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, wherein the halogen-free low-smoke flame-retardant inner sheath (8) is made of black low-smoke halogen-free oxygen-insulating sheath material.

9. The low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, wherein the armor layer (9) is double steel tape armor or thin round steel wire armor.