CN218384582U - Rated voltage 0.6/1kV nontoxic type halogen-free low-smoke flame-retardant power cable - Google Patents

Abstract

The utility model relates to a nontoxic type of rated voltage 0.6/1kV does not have steamed low fire-retardant power cable of cigarette, including the cable core, the cable core includes main line core and neutral sinle silk, the center of main line core and neutral sinle silk is the conductor, the crowded package in the conductor outside at main line core and neutral sinle silk center has the crosslinked polyethylene insulating layer, main line core and neutral sinle silk are twisted with one heart and are filled the packing layer and form the cable core between the gap of transposition, the outside of cable core is around there being steamed low cigarette high fire-retardant area, and there is not steamed low cigarette high fire-retardant outside of taking of wrapping oversheath layer. The utility model discloses the cable can not produce toxic gas in combustion process, in case the conflagration just can not be because of producing two influences rescues of toxic gas in this way, has increased the factor of safety of cable.

Description

Rated voltage 0.6/1kV nontoxic type halogen-free low-smoke flame-retardant power cable

Technical Field

The application relates to the technical field of wires and cables, in particular to a non-toxic halogen-free low-smoke flame-retardant power cable with the rated voltage of 0.6/1 kV.

Background

In the practical process of the flame-retardant cable for more than 20 years, neoprene and polyvinyl chloride (PVC) are mostly adopted as a sheath material, once the flame-retardant cable is heated and burnt, the smoke quantity released by burning is very large, the light transmittance measured by IEC61034 or GB/T17651 is below 10%, the content of Hydrogen Chloride (HCL) gas released by the flame-retardant cable is high, and the HCL content measured by IEC61034 or GB/T17651 reaches 200-300 mg/g. The strong smoke, together with the stimulation of toxic gases such as HCL, H2S and CO to the respiratory system of people and blood poisoning, can not allow people in the disaster to escape from the fire scene. In terms of smoke generation, the halogen-free low-smoke non-toxic flame-retardant cable has the performances of low smoke generation, non-toxicity, flame retardance and the like compared with other types of flame-retardant cables, so that the halogen-free low-smoke non-toxic flame-retardant cable is widely applied to places with intensive personnel activities, such as hotels, entertainment places, schools, office buildings, markets, rail transit, ships, nuclear power stations, machine rooms and other places with limited space and key places.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application aims to provide a non-toxic halogen-free low-smoke flame-retardant power cable with rated voltage of 0.6/1kV, and the non-toxic halogen-free low-smoke flame-retardant power cable is smokeless and increases the safety coefficient of the cable.

In order to achieve the above purpose, the present application provides the following technical solutions:

the embodiment of the application provides a nontoxic type of rated voltage 0.6/1kV does not have steamed low fire-retardant power cable of cigarette, including the cable core, the cable core includes main line core and neutral sinle silk, the center of main line core and neutral sinle silk is the conductor, the crowded package in the conductor outside at main line core and neutral sinle silk center has the crosslinked polyethylene insulating layer, the main line core and the concentric transposition of neutral sinle silk are filled with the packing layer and are formed the cable core between the gap of transposition, the outside of cable core is around there being steamed low cigarette high fire-retardant area, and there is not crowded package oversheath layer in the outside of steamed low cigarette high fire-retardant area.

The conductor is formed by regularly twisting a 1 st copper conductor, a 2 nd copper conductor or a 5 th copper conductor.

The thickness of the crosslinked polyethylene insulating layer is 0.1-0.15 mm.

The filling layer is made of ceramic silica gel cement materials, and gaps formed by twisting the main wire core and the neutral wire core are filled with the filling layer, so that the cable core is tightly filled, compact and round.

The cover lapping rate of the halogen-free low-smoke high-flame-retardant tape wrapping is 20-30%.

The outer sheath layer is wrapped outside the halogen-free low-smoke high-flame-retardant belt by adopting a halogen-free low-smoke flame-retardant polyolefin material in an extruded mode.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses under the whole prerequisite that satisfies the fire-retardant low toxicity test of low smoke and zero halogen that national standard GB/T19666-2019 stipulates of cable, its toxicity index is lower, is close the non-toxicity almost, in case catch fire, has increased the factor of safety of cable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The terms "first," "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily being construed as indicating or implying any actual such relationship or order between such entities or actions.

As shown in fig. 1, to the not enough that exists among the prior art, this application embodiment provides a nontoxic type of rated voltage 0.6/1kV does not have steamed low fire-retardant power cable, including the cable core, the cable core includes sinle silk 1 and neutral sinle silk 2, sinle silk 1 and neutral sinle silk 2's center is conductor 3, the crowded package in the conductor 3 outside at sinle silk 1 and neutral sinle silk 2 center has crosslinked polyethylene insulating layer 4, sinle silk 1 and neutral sinle silk 2 are concentric the transposition and are filled with filling layer 5 and form the cable core between the gap of transposition, the outside of cable core is wrapped around there being steamed low cigarette high fire-retardant area 6, and there is steamed low cigarette high fire-retardant outburst jacket layer 7 in the outside of taking 6, conductor 3 adopts and forms by the normal copper conductor of the 1 st kind or the 2 nd kind copper conductor or the 5 th copper conductor transposition that accord with GB/T3956. The thickness of the crosslinked polyethylene insulating layer 4 is 0.1-0.15 mm. The filling layer 5 is made of inorganic mineral ceramic silica gel cement materials, and the filling layer 5 is filled in gaps formed by twisting the main wire core 1 and the neutral wire core 2, so that the cable core is filled compactly and roundly. The lapping rate of the halogen-free low-smoke high-flame-retardant belt 6 lapping is 20-30%. The outer sheath layer 7 is extruded and wrapped outside the halogen-free low-smoke high-flame-retardant belt 6 by adopting a halogen-free low-smoke flame-retardant polyolefin material. The arrangement enables the flame retardant rating of the cable to reach A class.

The utility model discloses the cable, 5 packing of filling layer adopt the mode of filling and irritating, make the cable core not have the space, because inside free air has improved the whole flame retardant property of cable like this in the combustion process. In addition, as the crosslinked polyethylene is insulated by a hydrocarbon organic high molecular compound, the ceramic silica gel mud is filled by an inorganic compound, and the cabling wrapping belt and the outer sheath are made of halogen-free low-smoke non-toxic materials, the cable cannot generate toxic gas in the combustion process, so that rescue cannot be influenced by the generated toxic gas once a fire disaster occurs, and the safety coefficient of the cable is increased.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (6)

1. The utility model provides a nontoxic type of rated voltage 0.6/1kV does not have steamed low fire-retardant power cable of cigarette which characterized in that, includes the cable core, the cable core includes main line core (1) and neutral sinle silk (2), the center of main line core (1) and neutral sinle silk (2) is conductor (3), conductor (3) the outside crowded package at main line core (1) and neutral sinle silk (2) center has crosslinked polyethylene insulating layer (4), main line core (1) and neutral sinle silk (2) are twisted with one heart and are filled full filling layer (5) between the gap of transposition and form the cable core, the outside of cable core is wrapped there are steamed low cigarette high fire-retardant area (6), and outer jacket layer (7) is crowded package in the outside of steamed low cigarette high fire-retardant area (6).

2. The nontoxic type halogen-free low-smoke flame-retardant power cable with rated voltage of 0.6/1kV according to claim 1, characterized in that the conductor (3) is formed by regularly twisting the 1 st copper conductor, the 2 nd copper conductor or the 5 th copper conductor.

3. The non-toxic halogen-free low-smoke flame-retardant power cable with the rated voltage of 0.6/1kV according to claim 1, wherein the thickness of the crosslinked polyethylene insulating layer (4) is 0.1-0.15 mm.

4. The non-toxic halogen-free low-smoke flame-retardant power cable with the rated voltage of 0.6/1kV according to claim 1, wherein the filling layer (5) is made of ceramic silica gel cement, and the filling layer (5) fills gaps formed by twisting the main cable core (1) and the neutral cable core (2) so that the cable core is filled compactly and roundly.

5. The nontoxic type halogen-free low-smoke flame-retardant power cable with rated voltage of 0.6/1kV according to claim 1, characterized in that the lapping rate of the lapping of the halogen-free low-smoke high flame-retardant tape (6) is 20-30%.

6. The nontoxic type halogen-free low-smoke flame-retardant power cable with 0.6/1kV rated voltage according to claim 1, characterized in that the outer sheath layer (7) is extruded and wrapped outside the halogen-free low-smoke high flame-retardant belt (6) by adopting a halogen-free low-smoke flame-retardant polyolefin material.

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