CN204332481U - A kind of two core flame-retardant refractory cables - Google Patents
A kind of two core flame-retardant refractory cables Download PDFInfo
- Publication number
- CN204332481U CN204332481U CN201420717849.6U CN201420717849U CN204332481U CN 204332481 U CN204332481 U CN 204332481U CN 201420717849 U CN201420717849 U CN 201420717849U CN 204332481 U CN204332481 U CN 204332481U
- Authority
- CN
- China
- Prior art keywords
- core
- retardant
- flame
- conductor
- cable
- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a kind of two core flame-retardant refractory cables, comprise and tighten layer (1) and cable core (2), be outside equipped with at cable core (2) and tighten layer (1); Described cable core (2) forms by two cores (21) are stranded.Described core (21) comprises round conductor (211) and arc insulating sleeve composite bed (212), and described arc insulating sleeve composite bed (212) is extruded in round conductor (211) outward.Two core flame-retardant refractory cables of the present utility model, core is bow-shaped structural, compact conformation, between core, gap is little, do not need to use the fire-retardant or refractory materials such as glass cord, glass fiber tape, mica tape, asbestos cord, reduce production cost, flame-retardant dependable performance.Conductor adopts circle to press structure, and technology difficulty is little and can not Damage to insulation layer.
Description
Technical field
The utility model belongs to technical field of electric wires and cables, particularly a kind of two core flame-retardant refractory cables.
Background technology
Along with taking place frequently of fire incident, people constantly deepen electric wire fire risk understanding, and the requirement of relevant department to performances such as electric wire fire protection flame retardings is also more and more higher.Features such as spreading fast, difficulty of putting out a fire to save life and property because cable fire has, produce secondary harm, recovery time is long can bring huge loss to the lives and properties of national economy and the people.Therefore fire-retardant, fire performance, the security reliability of people to electric wire proposes harsher service conditions.As strong in fire prevention, explosion-proof, overload capacity, long service life, the particular/special requirements such as under Fire Conditions, Fire lift, fire pump need keep the normal operation in certain hour, and cable is low-smoke low-halogen low toxicity after combustion, and even smokeless halogen-free is nontoxic.Cable-flame retardant, fire prevention measure reduce the important means that ignition of cable prolongs combustion, and key is being relied mainly on prevention, and all kinds of flame retardant cable, fire-resisting cable, fireproof cable are used widely.
Burning occurs any material all must possess following three conditions: combustible, oxidant and temperature (ignition source).The oxygen contained in air is a kind of oxidant, therefore, in Cable Construction Design, reducing gap between cable is a kind of conventional method with the existence that this reduces air, therefore, prior art often adopts the method arranging the fire-retardant or refractory material such as glass cord, glass fiber tape, mica tape, asbestos cord between each structure of cable, can improve fire-retardant, the fire resistance of cable.This method one is that use that is fire-retardant or refractory material can increase production cost in a large number, and two is fire-retardant or the performance of refractory material own is unreliable or have Shanghai to human body.In order to reduce the gap between core, in prior art, two core cable also usually uses arc conductor, and extruded insulation forms stranding after arc core, and gap between core can be made to drop to minimum, but and gap between sheath still exist.There is an a lot of difficult problem and drawback in the processing of especially arc conductor: one is that technology difficulty is large in process of production, in order to meet the enough flexibilities of arc conductor and stability, all higher to the characteristic requirements of the design of conductor structure, moulds of industrial equipment, equipment; Two is want conductor to adopt compact conductor for preventing moisture from infiltrating, and to improve the activity coefficient of wire, reduced outside diameter, reduce gap between conductor, and arc conductor is arc pressing, the shape of every layer is different, and the difficulty of pressing increases; Three is easily cause electric field to concentrate in each angle course of processing of arc conductor and damage cable insulation.
Utility model content
The utility model is overcome the shortcoming that prior art exists, and provides a kind of compact conformation, cost is low, technology difficulty is low, two core flame-retardant refractory cables that flame-retardant performance is good.
Two core flame-retardant refractory cables of the present utility model, comprise and tighten layer and cable core, be outside equipped with tighten layer at cable core; Described cable core forms by two cores are stranded.Described core comprises round conductor and arc insulating sleeve composite bed, and described arc insulating sleeve composite bed is extruded in outside round conductor.
Another kind as technique scheme improves, and described round conductor is round compacted comductor or presses circular molded line conductor.
Another kind as technique scheme improves, and described arc insulating sleeve composite bed is squash type or crowded tubular type.
Another kind as technique scheme improves, described in tighten layer and be wrapped, vertical bag, weave or extrude.
Another kind as technique scheme improves, described in tighten layer be braid, braid is coated with flame-retardant coating.
Two core flame-retardant refractory cables of the present utility model, core is bow-shaped structural, compact conformation, between core, gap is little, do not need to use the fire-retardant or refractory materials such as glass cord, glass fiber tape, mica tape, asbestos cord, reduce production cost, flame-retardant dependable performance.Conductor adopts circle to press structure, and technology difficulty is little and can not Damage to insulation layer.
Accompanying drawing explanation
Fig. 1 is the utility model two core flame-retardant refractory construction of cable schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the one two core flame-retardant refractory cable that the utility model proposes is described in detail.
As shown in Figure 1, the one two core flame-retardant refractory cable of the present embodiment comprises tightens layer 1 and cable core 2, is outside equipped with tightens layer 1 at cable core 2; Described cable core 2 forms by two cores 21 are stranded.
Described core 21 comprises round conductor 211 and arc insulating sleeve composite bed 212, and described arc insulating sleeve composite bed 212 is extruded in outside round conductor 211.Described round conductor 211 is for round compacted comductor or press circular molded line conductor.
Described arc insulating sleeve composite bed 212 is squash type or crowded tubular type.Preferred squash type.
Described layer 1 of tightening is wrapped, vertical bag, weaves or extrude.Be preferably braid, braid is coated with flame-retardant coating.
Claims (5)
1. two core flame-retardant refractory cables, is characterized in that: comprise and tighten layer (1) and cable core (2), be outside equipped with tighten layer (1) at cable core (2); Described cable core (2) forms by two cores (21) are stranded; Described core (21) comprises round conductor (211) and arc insulating sleeve composite bed (212), and described arc insulating sleeve composite bed (212) is extruded in round conductor (211) outward.
2. two core flame-retardant refractory cables according to claim 1, is characterized in that: described round conductor (211) is for round compacted comductor or press circular molded line conductor.
3. two core flame-retardant refractory cables according to claim 1, is characterized in that: described arc insulating sleeve composite bed (212) is squash type or crowded tubular type.
4. two core flame-retardant refractory cables according to claim 1, is characterized in that: described in tighten layer (1) and be wrapped, vertical bag, weave or extrude.
5. two core flame-retardant refractory cables according to claim 4, is characterized in that: described in tighten layer (1) be braid, braid is coated with flame-retardant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717849.6U CN204332481U (en) | 2014-11-26 | 2014-11-26 | A kind of two core flame-retardant refractory cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717849.6U CN204332481U (en) | 2014-11-26 | 2014-11-26 | A kind of two core flame-retardant refractory cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204332481U true CN204332481U (en) | 2015-05-13 |
Family
ID=53168808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420717849.6U Active CN204332481U (en) | 2014-11-26 | 2014-11-26 | A kind of two core flame-retardant refractory cables |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204332481U (en) |
-
2014
- 2014-11-26 CN CN201420717849.6U patent/CN204332481U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109448921B (en) | Manufacturing method of inorganic fireproof medium-high voltage cable | |
| CN205451840U (en) | Resistant pottery fireproof cable of waiting | |
| CN202996349U (en) | Novel fireproof cable | |
| CN204332413U (en) | A kind of multicore flame-retardant composite cable with outer jacket | |
| CN202871392U (en) | Environmental-friendly and cleaning type high-voltage flame-resistant power cable | |
| CN202422824U (en) | Fireproof low-voltage cable | |
| CN201946372U (en) | Mine fire-resistant rubber-sheathed flexible cable | |
| CN204332474U (en) | A kind of multicore flame resistant cable with wire core | |
| CN204215791U (en) | With the multicore flame resistant cable of sheath band wire core | |
| CN204332481U (en) | A kind of two core flame-retardant refractory cables | |
| CN203721270U (en) | A fluoroplastic insulation highly flame retardant highly temperature resistant cable used for an ore factory | |
| CN207199353U (en) | A kind of isolated form fireproof cable | |
| CN204215790U (en) | A kind of middle its central band controls the multicore flame resistant cable of cable core | |
| CN204215779U (en) | The outer field multicore flame resistant cable of a kind of band | |
| CN204332476U (en) | Multicore flame resistant cable | |
| CN204332482U (en) | A kind of two core flame-retardant refractory cables with outer jacket | |
| CN204215778U (en) | A kind of multicore flame resistant cable | |
| CN201336168Y (en) | Power cable for providing power supply for communication equipment | |
| CN205303041U (en) | Well high voltage insulation fire resisting cable | |
| CN104332234A (en) | Two-core cable | |
| CN104332243A (en) | Flame-retardant fire-resistant cable with control cable core at center | |
| CN204215739U (en) | A kind of multicore flame-retardant composite cable | |
| CN104332218A (en) | Multi-core flame-retardant fireproof composite cable | |
| CN206075914U (en) | A kind of safety fire-resisting cable | |
| CN104409155A (en) | Cable with ground wire core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |