CN213815617U - Low-smoke halogen-free flame-retardant electric wire - Google Patents
Low-smoke halogen-free flame-retardant electric wire Download PDFInfo
- Publication number
- CN213815617U CN213815617U CN202120057442.5U CN202120057442U CN213815617U CN 213815617 U CN213815617 U CN 213815617U CN 202120057442 U CN202120057442 U CN 202120057442U CN 213815617 U CN213815617 U CN 213815617U
- Authority
- CN
- China
- Prior art keywords
- layer
- arc
- insulating layer
- semicircles
- cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a fire-retardant electric wire of low smoke and zero halogen relates to electric wire technical field. A low-smoke halogen-free flame-retardant wire comprises a wire core, an insulating layer and an outer protective layer, wherein the wire core is wrapped in the insulating layer, the outer protective layer is arranged on the outer side of the insulating layer, the insulating layer is a halogen-free low-smoke flame-retardant polyolefin insulating layer, the outer protective layer is a nylon outer protective layer, the insulating layer is composed of two symmetrical semicircles, a plurality of convex arc-shaped inserting strips are arranged on the arc end surface of one semicircle, a plurality of arc-shaped grooves are arranged on the arc end surface of the other semicircle, and the two semicircles; the outer jacket comprises two symmetrical semicircles, and the circular arc terminal surface of a semicircle is provided with the convex cutting of a plurality of archs, and the circular arc terminal surface of another semicircle is provided with the convex recess of a plurality of, and two semicircles are through convex cutting and convex recess accordant connection.
Description
Technical Field
The utility model relates to the technical field of electric wires, concretely relates to fire-retardant electric wire of low smoke and zero halogen.
Background
The electric wire generally comprises a core wire, an insulating sheath and a protective sheath, when two electric wires in the prior art are connected, the insulating sheath and the protective sheath of the electric wire are generally required to be stripped, and then the electric wire is sealed and insulated by an insulating tape, so that the mode has poor insulating property, an overlapping opening is unstable, electric leakage can occur, and accidents such as fire disasters can be caused in serious cases; in the prior art, the protective layer is usually made of plastic or rubber, when a fire disaster or overload occurs to the electric wire, the plastic and the rubber can be directly melted by the poor high temperature, a large amount of harmful substances such as hydrogen chloride gas and halogen can be generated in the hot melting process, a human body is easy to suffocate or even die after absorbing a large amount of hydrogen chloride gas, and once the fire disaster occurs, the safe evacuation of personnel can be very difficult.
Disclosure of Invention
An object of the utility model is to provide a fire-retardant electric wire of low smoke and zero halogen solves the problem among the background art.
In order to solve the technical problem, the utility model adopts the following technical scheme: a low-smoke halogen-free flame-retardant wire comprises a wire core 1, an insulating layer 2 and an outer protective layer 3, wherein the wire core 1 is wrapped in the insulating layer 2, the outer protective layer 3 is arranged on the outer side of the insulating layer 2, the insulating layer 2 is a halogen-free low-smoke flame-retardant polyolefin insulating layer 2, the outer protective layer 3 is a nylon net layer, the insulating layer 2 is composed of two symmetrical semicircles 4, the arc end surface of one semicircle 4 is provided with a plurality of convex arc-shaped inserting strips 5, the arc end surface of the other semicircle 4 is provided with a plurality of arc-shaped grooves 6, and the two semicircles 4 are connected in a matching mode through the arc-shaped inserting strips 5 and the arc-shaped grooves 6; the outer jacket 3 is composed of two symmetrical semicircles 4, the arc end surface of one semicircle 4 is provided with a plurality of convex arc-shaped inserting strips 5, the arc end surface of the other semicircle 4 is provided with a plurality of arc-shaped grooves 6, and the two semicircles 4 are connected in a matching mode through the arc-shaped inserting strips 5 and the arc-shaped grooves 6.
The further technical scheme is that the connecting ports of the two semicircles 4 of the insulating layer 2 and the connecting ports of the two semicircles 4 of the outer protective layer 3 are not on the same horizontal line.
A further technical scheme is that a cold-resistant layer 7 is arranged on the inner wall of the outer protective layer 3, the cold-resistant layer 7 is composed of a waterproof layer 72 and a cold-resistant PVC layer 71, the inner wall of the cold-resistant PVC layer 71 is wrapped on the outer surface of the insulating layer 2, the waterproof layer 72 is arranged on the outer surface of the cold-resistant PVC layer 71, and the waterproof layer 72 and the cold-resistant PVC layer 71 are integrally formed.
The further technical proposal is that the outer surface of the insulating layer 2 is provided with a flame-retardant coating 8.
Compared with the prior art, the beneficial effects of the utility model are that: the application provides a low-smoke halogen-free flame-retardant wire, which has good flame retardant property through an outer protective layer of a nylon net layer and a halogen-free low-smoke flame-retardant polyolefin insulating layer, and can not generate a large amount of smoke to cause that personnel can not evacuate safely if a fire accident happens; through the design of insulating layer and outer jacket semicircle, and the semicircle is through convex cutting and convex recess accordant connection for when the electric wire fracture, perhaps the electric wire is not long enough, when need connecting the use with two electric wires, can be convenient peel off the insulating layer and the outer jacket of electric wire and carry out the wiring, restore insulating layer and outer jacket after the wiring finishes, and it is fixed at the kneck with insulating tape, avoided the interface only have fixed electric leakage and the conflagration such as the fixed accident that leads to of insulating tape.
Drawings
Fig. 1 is a cross-sectional view of the electric wire of the present invention.
Fig. 2 is a schematic view of the connection mode of the semicircle of the present invention.
Fig. 3 is a structure diagram of the cold-resistant layer of the present invention.
Fig. 4 is a structure view of the fireproof coating of the present invention.
In the figure: 1-wire core, 2-insulating layer, 3-outer protective layer, 4-semicircle, 5-cutting, 6-groove, 7-cold-resistant layer, 71-cold-resistant PVC layer, 72-waterproof layer and 8-flame-retardant coating.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are for illustrative purposes only and are not intended to limit the invention, which is to be construed as limited to the same extent as the drawings.
As shown in fig. 1-2, a low-smoke halogen-free flame-retardant electric wire comprises a wire core 1, an insulating layer 2 and an outer protective layer 3, wherein the wire core 1 is wrapped in the insulating layer 2, the outer protective layer 3 is arranged on the outer side of the insulating layer 2, the insulating layer 2 is a halogen-free low-smoke flame-retardant polyolefin insulating layer 2, the outer protective layer 3 is a nylon mesh layer, the insulating layer 2 is composed of two symmetrical semicircles 4, a plurality of convex arc-shaped inserting strips 5 are arranged on the arc end surface of one semicircle 4, a plurality of arc-shaped grooves 6 are arranged on the arc end surface of the other semicircle 4, and the two semicircles 4 are connected in a matching manner through the arc-shaped inserting strips 5 and the arc-shaped grooves 6; the outer jacket 3 is composed of two symmetrical semicircles 4, the arc end surface of one semicircle 4 is provided with a plurality of convex arc-shaped inserting strips 5, the arc end surface of the other semicircle 4 is provided with a plurality of arc-shaped grooves 6, and the two semicircles 4 are connected in a matching mode through the arc-shaped inserting strips 5 and the arc-shaped grooves 6.
The nylon net layer is made of halogen-free flame-retardant nylon, the halogen-free low-smoke flame-retardant polyolefin insulating layer 2 is matched with the halogen-free flame-retardant nylon, so that the electric wire has good low-smoke flame-retardant performance, and if a fire accident happens, a large amount of smoke cannot be generated, and personnel cannot escape safely. As shown in fig. 2, the schematic diagram of the semicircular connection mode is a connection diagram of wires in a top view, the arc-shaped inserting strip 5 and the arc-shaped groove 6 are arranged along the length direction of the wires, the insulation layer 2 and the outer protection layer 3 are designed to be semicircular 4, and the semicircle 4 is connected in a matching manner through the arc-shaped inserting strip 5 and the arc-shaped groove 6, when the wires are broken or the wires are not long enough, and two wires need to be connected for use, the insulation layer 2 and the outer protection layer 3 of the wires can be conveniently stripped for wiring, after the wiring is finished, the insulation layer 2 and the outer protection layer 3 are recovered, and are fixed at the interface by using an insulation adhesive tape.
The two semicircular 4 connecting ports of the insulating layer 2 and the two semicircular 4 connecting ports of the outer protective layer 3 are not on the same horizontal line. The semicircle 4 connection port of the insulating layer 2 and the semicircle 4 connection port of the outer protective layer 3 are not on the same horizontal line, so that the phenomenon that moisture permeates into the wire through the connection port of the semicircle 4 is avoided, and the wire breakdown accident is caused.
As shown in fig. 3, the inner wall of the outer sheath 3 is provided with a cold-resistant layer 7, the cold-resistant layer 7 is composed of a waterproof layer 72 and a cold-resistant PVC layer 71, the inner wall of the cold-resistant PVC layer 71 is wrapped on the outer surface of the insulating layer 2, the outer surface of the cold-resistant PVC layer 71 is provided with a waterproof layer 72, and the waterproof layer 72 and the cold-resistant PVC layer 71 are integrally formed. Through the design of waterproof layer 72, the infiltration of aqueous vapor has been kept off, and the design of cold-resistant PVC layer 71 on the one hand has further kept off the aqueous vapor, avoids causing the harm to inside cable, and on the other hand avoids the cable to wet and harden, leads to outer jacket 3 to ftracture at last.
As shown in fig. 4, the outer surface of the insulating layer 2 is provided with a flame retardant coating 8. The flame retardant performance of the cable is further enhanced by the design of the flame retardant coating 8.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (4)
1. The utility model provides a fire-retardant electric wire of low smoke and zero halogen, includes sinle silk (1), insulating layer (2), outer jacket (3), and the parcel has sinle silk (1) in insulating layer (2), and insulating layer (2) outside is provided with outer jacket (3), its characterized in that: the insulation layer (2) is a halogen-free low-smoke flame-retardant polyolefin insulation layer (2), the outer protection layer (3) is a nylon outer protection layer (3), the insulation layer (2) is composed of two symmetrical semicircles (4), a plurality of convex arc-shaped inserting strips (5) are arranged on the arc end surface of one semicircles (4), a plurality of arc-shaped grooves (6) are arranged on the arc end surface of the other semicircles (4), and the two semicircles (4) are connected in a matched mode through the arc-shaped inserting strips (5) and the arc-shaped grooves (6); the outer protection layer (3) is composed of two symmetrical semicircles (4), the arc end face of one semicircle (4) is provided with a plurality of convex arc-shaped inserting strips (5), the arc end face of the other semicircle (4) is provided with a plurality of arc-shaped grooves (6), and the two semicircles (4) are connected in a matching mode through the arc-shaped inserting strips (5) and the arc-shaped grooves (6).
2. The low smoke, zero halogen and flame retardant wire of claim 1, wherein: the connecting ports of the two semicircles (4) of the insulating layer (2) and the connecting ports of the two semicircles (4) of the outer protective layer (3) are not on the same horizontal line.
3. The low smoke, zero halogen and flame retardant wire of claim 1, wherein: be provided with cold-resistant layer (7) on outer jacket (3) inner wall, cold-resistant layer (7) comprise waterproof layer (72) and cold-resistant PVC layer (71), the surface of cold-resistant PVC layer (71) inner wall parcel insulating layer (2), and cold-resistant PVC layer (71) surface is provided with waterproof layer (72), waterproof layer (72) and cold-resistant PVC layer (71) integrated into one piece.
4. The low smoke, zero halogen and flame retardant wire of claim 1, wherein: and the outer surface of the insulating layer (2) is provided with a flame-retardant coating (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120057442.5U CN213815617U (en) | 2021-01-11 | 2021-01-11 | Low-smoke halogen-free flame-retardant electric wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120057442.5U CN213815617U (en) | 2021-01-11 | 2021-01-11 | Low-smoke halogen-free flame-retardant electric wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213815617U true CN213815617U (en) | 2021-07-27 |
Family
ID=76949235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120057442.5U Active CN213815617U (en) | 2021-01-11 | 2021-01-11 | Low-smoke halogen-free flame-retardant electric wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213815617U (en) |
-
2021
- 2021-01-11 CN CN202120057442.5U patent/CN213815617U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213815617U (en) | Low-smoke halogen-free flame-retardant electric wire | |
| CN205595110U (en) | Flexible fireproof cable of radial waterproofing type | |
| CN210443324U (en) | Flame-retardant cable | |
| CN207441277U (en) | A kind of fire resisting heat-resistance type waterproof power cord | |
| CN212061911U (en) | Cable with good waterproof effect | |
| CN216817875U (en) | BV type copper core polyvinyl chloride insulated wire safety protection structure | |
| CN213400603U (en) | Flexible mineral substance cable with high and low temperature resistance | |
| CN217134061U (en) | Fire-resistant flame retarded cable of crosslinked polyethylene | |
| CN205303042U (en) | This ampere of explosion -proof high temperature resistant instrument cable of environmental protection | |
| CN215815313U (en) | Power line with strong fireproof performance | |
| CN214624520U (en) | Low-smoke halogen-free flame-retardant interlocking armored aluminum alloy cable | |
| CN210110401U (en) | Double-layer insulation twisted flame-retardant long-life cable wire | |
| CN210640021U (en) | Ceramic silica gel insulation medium-voltage fire-resistant cable | |
| CN209859649U (en) | High-flexibility mineral insulated cable | |
| CN213092843U (en) | Curing isolated flexible fireproof cable | |
| CN215954888U (en) | B1-grade halogen-free low-smoke flame-retardant environment-friendly safety cloth wire | |
| CN219123008U (en) | Waterproof flame-retardant fire-resistant medium voltage cable | |
| CN203503357U (en) | Copper sheath fireproof cable | |
| CN212750451U (en) | High-temperature-resistant mineral-insulated high-flexibility cable without metal sheath | |
| CN203910316U (en) | High-temperature single-core cable | |
| CN202838997U (en) | Flexible mineral-insulated fireproof cable | |
| CN213424695U (en) | High-flexibility cross-linked low-smoke halogen-free flame-retardant polyolefin cable | |
| CN213545986U (en) | Low-smoke halogen-free flame-retardant double-insulated wire | |
| CN109215870A (en) | Middle pressure fireproof cable | |
| CN216053966U (en) | Thermoplastic elastomer new energy cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |