Aluminum alloy conductor flame-retardant photovoltaic cable

Abstract

The utility model relates to an aluminum alloy conductor flame-retardant photovoltaic cable, which comprises a central core formed by twisting a plurality of aluminum alloy conductors and a plurality of silica gel heat-conducting strips, an insulating layer, a silica gel heat-conducting sheet wrapping layer, a flame-retardant layer, a metal shielding layer and an outer sheath are sequentially arranged outside the central core, and mixed flame-retardant powder is adhered to the inner side of the flame-retardant layer. And one of the silica gel heat conduction strips in the central wire core is distributed in the center of the plurality of aluminum alloy conductors, and the rest silica gel heat conduction strips and the plurality of aluminum alloy conductors are uniformly and alternately arranged. And a steel belt protection layer is arranged between the metal shielding layer and the outer sheath. And an elastic filling layer is arranged between the metal shielding layer and the steel belt protection layer. The elastic filling layer comprises a plurality of elastic filling bodies which are evenly distributed on the circumference. According to the utility model, the probability of spontaneous combustion caused by heat accumulation of the aluminum alloy conductor can be reduced, a dual flame-retardant structure is provided, the flame-retardant performance of the cable can be improved, and the safety coefficient is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cable and wire, especially to an aluminum alloy conductor flame-retardant photovoltaic cable. BACKGROUND

[0002] The photovoltaic cable is a kind of cable that is specially used for the transmission of electric energy in the direct current side circuit of solar photovoltaic power station system. When the photovoltaic cable encounters fire, it is easy to be ignited, which can aggravate the spread of fire, and during the burning process, it can produce thick smoke, which can block the view of personnel, is not convenient for personnel to escape, and the toxic and harmful substances in the thick smoke can accelerate the oxygen deficiency of personnel to cause syncope and other conditions, which can bring greater life danger to the personnel encountering fire and aggravate the harm of fire. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the deficiency of prior art, and provides an aluminum alloy conductor flame-retardant photovoltaic cable.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] An aluminum alloy conductor flame-retardant photovoltaic cable, which comprises a center line core twisted by a plurality of aluminum alloy conductors and a plurality of silica gel heat-conducting strips, and is provided with, in sequence from the outside of the center line core, an insulation layer, a silica gel heat-conducting sheet wrapping layer, a flame-retardant layer, a metal shielding layer and an outer sheath, and the inside of the flame-retardant layer is bonded with mixed flame-retardant powder.

[0006] In particular, the mixed flame-retardant powder is bonded to the inside of the flame-retardant layer after being mixed by ammonium phosphate ABC dry powder particles, glass fiber filler particles and perlite particles.

[0007] In particular, the mixed flame-retardant powder is bonded to the inside of the flame-retardant layer after being mixed by antimony trioxide particles, aluminum hydroxide particles and magnesium hydroxide particles.

[0008] One of the silica gel heat-conducting strips in the center line core is distributed at the center of the plurality of aluminum alloy conductors, and the remaining silica gel heat-conducting strips are uniformly and alternately arranged with the plurality of aluminum alloy conductors.

[0009] A steel belt protection layer is arranged between the metal shielding layer and the outer sheath.

[0010] An elastic filling layer is arranged between the metal shielding layer and the steel belt protection layer.

[0011] The elastic filling layer comprises a plurality of elastic filling bodies uniformly distributed in the circumference.

[0012] The elastic filling body is in an elliptical structure.

[0013] The utility model has the advantages that the utility model can reduce the spontaneous combustion probability caused by the heat accumulation of the aluminum alloy conductor, has a double flame-retardant structure, can improve the flame-retardant performance of the cable and improve the safety factor. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] In the drawing: 1 - center line core; 11 - aluminum alloy conductor; 12 - silica gel heat conduction strip; 2 - insulation layer; 3 - silica gel heat conduction sheet wrapping layer; 4 - flame-retardant layer; 5 - metal shielding layer; 6 - outer sheath; 7 - mixed flame-retardant powder; 8 - steel belt protection layer; 9 - elastic filling layer;

[0016] The utility model will be described below in combination with the embodiment of the utility model and with reference to the drawings. DETAILED DESCRIPTION

[0017] The principles and features of the utility model are described below in combination with the drawings, and the embodiments are only used to explain the utility model and are not used to limit the scope of the utility model. In the following paragraphs, the utility model is described in more detail by way of example with reference to the drawings. The advantages and features of the utility model will be clearer according to the following description. It should be noted that the drawings are very simplified and use non-precise proportions, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the utility model.

[0018] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] The utility model will be further described below in combination with the drawings and embodiments:

[0021] As Figure 1 shown, an aluminum alloy conductor flame-retardant photovoltaic cable includes a center line core 1, an insulation layer 2, a silica gel heat conduction sheet wrapping layer 3, a flame-retardant layer 4, a metal shielding layer 5, an outer sheath 6, a mixed flame-retardant powder 7, a steel belt protection layer 8, and an elastic filling layer 9.

[0022] The center line core 1 is twisted by a plurality of aluminum alloy conductors 11 and a plurality of silica gel heat-conducting strips 12.

[0023] The silica gel heat-conducting strips 12 in the center line core 1 are distributed in the center of the plurality of aluminum alloy conductors 11, and the rest of the silica gel heat-conducting strips 12 are alternately arranged with the plurality of aluminum alloy conductors 11.

[0024] The center line core 1 is sequentially provided with an insulation layer 2, a silica gel heat-conducting sheet wrapping layer 3, a flame-retardant layer 4, a metal shielding layer 5 and an outer sheath 6, and the inside of the flame-retardant layer 4 is bonded with mixed flame-retardant powder 7.

[0025] The silica gel heat-conducting strips 12 and the silica gel heat-conducting sheet wrapping layer 3 are both made of heat-conducting silica gel, which is made of glass fiber and reinforced silicone rubber, and has good softness, can be in close contact with the heating object, and can transmit heat to any desired place.

[0026] The silica gel heat-conducting strips 12 and the silica gel heat-conducting sheet wrapping layer 3 can conduct the heat emitted by the aluminum alloy conductors 11, avoiding combustion caused by excessive heat accumulation.

[0027] The flame-retardant layer 4 and the mixed flame-retardant powder 7 jointly play a flame-retardant role.

[0028] The flame-retardant layer 4 is a flame-retardant ceramicized fire-resistant composite tape.

[0029] In particular, the mixed flame-retardant powder 7 is bonded to the inside of the flame-retardant layer 4 after being mixed by ammonium phosphate ABC dry powder particles, glass fiber filler particles and perlite particles.

[0030] In particular, the mixed flame-retardant powder 7 is bonded to the inside of the flame-retardant layer 4 after being mixed by antimony trioxide particles, aluminum hydroxide particles and magnesium hydroxide particles.

[0031] A steel belt protection layer 8 is arranged between the metal shielding layer 5 and the outer sheath 6, which can protect the internal structure and avoid being pierced.

[0032] An elastic filling layer 9 is arranged between the metal shielding layer 5 and the steel belt protection layer 8, which can improve the elasticity of the cable.

[0033] The elastic filling layer 9 comprises a plurality of elastic filling bodies uniformly distributed in the circumference.

[0034] The utility model can reduce the probability of spontaneous combustion caused by heat accumulation of the aluminum alloy conductor 11, has a double flame-retardant structure, can improve the flame-retardant performance of the cable, and improve the safety factor.

[0035] The utility model has been described exemplarily above in combination with the drawings, and obviously, the utility model is not limited by the above-mentioned mode in the specific implementation, and various improvements adopting the method concept and technical scheme of the utility model or direct application in other occasions without improvement are all within the protection scope of the utility model.

Claims

1. A fire-retardant photovoltaic cable of an aluminum alloy conductor, characterized in that, The center line core (1) is twisted by several aluminum alloy conductors (11) and several silica gel heat-conducting strips (12), and the center line core (1) is sequentially provided with an insulation layer (2), a silica gel heat-conducting sheet wrapping layer (3), a flame-retardant layer (4), a metal shielding layer (5) and an outer sheath (6), and the inside of the flame-retardant layer (4) is bonded with mixed flame-retardant powder (7).

2. A fire-retardant photovoltaic cable of an aluminum alloy conductor according to claim 1, characterized in that, One of the silica gel heat-conducting strips (12) in the center line core (1) is distributed at the center of the several aluminum alloy conductors (11), and the rest of the silica gel heat-conducting strips (12) are uniformly and alternately arranged with the several aluminum alloy conductors (11).

3. A fire-retardant photovoltaic cable of an aluminum alloy conductor according to claim 2, characterized in that, A steel belt protection layer (8) is arranged between the metal shielding layer (5) and the outer sheath (6).

4. A fire-retardant photovoltaic cable of an aluminum alloy conductor according to claim 3, characterized in that, An elastic filling layer (9) is arranged between the metal shielding layer (5) and the steel belt protection layer (8).

5. A fire-retardant photovoltaic cable of an aluminum alloy conductor according to claim 4, characterized in that, The elastic filling layer (9) comprises several elastic filling bodies which are uniformly distributed in the circumference.

6. A fire-retardant photovoltaic cable of an aluminum alloy conductor according to claim 5, characterized in that, The elastic filling body is in an elliptical structure.

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