CN213752020U

CN213752020U - Polyolefin insulation low-smoke halogen-free flame-retardant photovoltaic cable

Info

Publication number: CN213752020U
Application number: CN202120147423.1U
Authority: CN
Inventors: 李峰; 吴福道; 肖尚玉
Original assignee: Anhui Yihe Cable Co ltd
Current assignee: Anhui Yihe Cable Co ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-07-20
Anticipated expiration: 2031-01-19

Abstract

The utility model provides a polyolefin insulation low-smoke halogen-free flame-retardant photovoltaic cable, which comprises a conductor, an insulation layer, a shaping layer, a flame-retardant layer and an outer sheath, wherein the conductor is a tin-plated copper conductor, an insulating layer is coated outside the outer layer, a shaping layer is arranged outside the insulating layer, the shaping layer is of a regular octagon structure, the cavity between the inner side wall of the shaping layer and the insulating layer of the regular octagonal structure is filled with filler, the centers of eight sides of the outer side wall are provided with arc grooves, an elastic pressure-resistant ball is arranged in the arc-shaped groove, the elastic pressure-resistant ball is internally tangent to the flame-retardant layer, an outer sheath is arranged outside the flame-retardant layer, a tensile core is arranged in a cavity formed between the outer sheath and the flame-retardant layer, the two sides of the tensile core are fixedly provided with a plurality of bulges which are uniformly distributed at intervals, and a filling cavity formed between the bulges and the inner side wall of the outer sheath and the outer side wall of the flame-retardant layer is filled with a flame retardant.

Description

Polyolefin insulation low-smoke halogen-free flame-retardant photovoltaic cable

Technical Field

The utility model relates to a wire and cable technical field indicates a fire-retardant photovoltaic cable of insulating low smoke and zero halogen of polyolefin especially.

Background

The photovoltaic cable is applied to a solar photovoltaic power generation system and an important and indispensable ring thereof, generally, low-voltage direct current generated by photovoltaic power generation is converted into alternating current and then output, and the cable connecting the photovoltaic module and the alternating current-direct current inverter is the photovoltaic cable. Therefore, the photovoltaic cable is used as the main part of electric energy transmission of the photovoltaic power generation facility and is directly related to the safety, reliability and advancement of the solar photovoltaic power generation system. The photovoltaic cable in the prior art has poor flame retardant effect, is easily ignited when meeting fire conditions, and can aggravate the fire spreading.

Therefore, the utility model provides an insulating low smoke and zero halogen flame retardant photovoltaic cable of polyolefin to solve the problem that the above-mentioned exists.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's shortcoming, provide a fire-retardant photovoltaic cable of insulating low smoke and zero halogen of polyolefin.

In order to solve the technical problem, the utility model provides a following technical scheme: a polyolefin insulation low-smoke halogen-free flame-retardant photovoltaic cable comprises a conductor, an insulation layer, a shaping layer, a flame-retardant layer and an outer sheath, wherein the conductor is a tin-plated copper conductor, an insulating layer is coated outside the outer layer, a shaping layer is arranged outside the insulating layer, the shaping layer is of a regular octagon structure, the cavity between the inner side wall of the shaping layer and the insulating layer of the regular octagonal structure is filled with filler, the centers of eight sides of the outer side wall are provided with arc grooves, an elastic pressure-resistant ball is arranged in the arc-shaped groove, the elastic pressure-resistant ball is internally tangent to the flame-retardant layer, an outer sheath is arranged outside the flame-retardant layer, a tensile core is arranged in a cavity formed between the outer sheath and the flame-retardant layer, the two sides of the tensile core are fixedly provided with a plurality of bulges which are uniformly distributed at intervals, and a filling cavity formed between the bulges and the inner side wall of the outer sheath and the outer side wall of the flame-retardant layer is filled with a flame retardant.

As an optimized technical proposal of the utility model, the outer jacket is filled with wear-resistant particles.

As an optimized technical proposal of the utility model, the flame-retardant layer is an asbestos net.

As an optimized technical proposal of the utility model, the filler adopts the high flame retardant filler.

As an optimized technical scheme of the utility model, the insulating layer adopts low smoke and zero halogen fire-retardant polyolefin insulating material to make.

As an optimized technical proposal, the outer sheath is made of low-smoke halogen-free flame-retardant polyolefin sheath material.

The utility model discloses the beneficial effect who reaches is:

1. the utility model provides a polyolefin insulation low smoke zero halogen flame retardant photovoltaic cable, through the high flame retardant filler, flame retardant layer and the fire retardant that set up, make the cable can be fine prevent flame spread under the conflagration condition, improve its flame retardant ability; the low-smoke halogen-free flame-retardant polyolefin insulating material is adopted to prepare the insulating layer, and the low-smoke halogen-free flame-retardant polyolefin sheath material is adopted to prepare the outer sheath, so that the cable has good physical properties such as low-smoke halogen free and flame retardant;

2. the utility model discloses a set up design layer, tensile core and the anti pressure ball of elasticity, increased the intensity of cable body, make external effort can not directly use inside the cable, improve the anti ability of buckling of cable, increase the life of cable.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

reference numbers in the figures: 1. a conductor; 2. an insulating layer; 3. a shaping layer; 4. a flame retardant layer; 5. an outer sheath; 6. a filler; 7. an arc-shaped groove; 8. an elastic compression ball; 9. a tensile core; 10. a protrusion; 11. filling the cavity; 12. a flame retardant; 13. wear resistant particles.

Detailed Description

The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b): as shown in fig. 1, the utility model provides a polyolefin insulation low smoke zero halogen flame retardant photovoltaic cable, which comprises a conductor 1, an insulating layer 2, a shaping layer 3, a flame retardant layer 4 and an outer sheath 5, wherein the conductor 1 is a tin-plated copper conductor, the insulating layer 2 is coated outside the conductor, the shaping layer 3 is arranged outside the insulating layer 2, the shaping layer 3 is in a regular octagon structure, a filler 6 is filled in a cavity between the inner side wall of the shaping layer 3 and the insulating layer 2 in the regular octagon structure, an arc groove 7 is arranged at the center of eight sides of the outer side wall, an elastic pressure ball 8 is arranged in the arc groove 7, the elastic pressure ball 8 is internally tangent to the flame retardant layer 4, a 5 is arranged outside the flame retardant layer 4, an anti-pulling core 9 is arranged in the cavity formed between the outer sheath 5 and the flame retardant layer 4, a plurality of bulges 10 which are uniformly arranged are arranged at intervals on both sides of the anti-pulling core 9, and a filling cavity 11 formed between the protrusion 10 and the inner side wall of the outer sheath 5 and between the protrusion and the outer side wall of the flame-retardant layer 4 is filled with a flame retardant 12.

Further, the outer sheath 5 is filled with wear-resistant particles 13.

Further, the flame-retardant layer 4 is an asbestos mesh.

Further, the filler 6 is a high flame retardant filler.

Further, the insulating layer 2 is made of low-smoke halogen-free flame-retardant polyolefin insulating material.

Further, the outer sheath 5 is made of a low-smoke halogen-free flame-retardant polyolefin sheath material.

The above embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims

1. The utility model provides a fire-retardant photovoltaic cable of insulating low smoke and zero halogen of polyolefin, its characterized in that, including conductor (1), insulating layer (2), design layer (3), fire-retardant layer (4) and oversheath (5), conductor (1) is the tinned copper conductor, and its outer cladding insulating layer (2), sets up design layer (3) outside insulating layer (2), design layer (3) are "regular octagon" structure, and the cavity intussuseption between this "regular octagon" structure design layer (3) inside wall and insulating layer (2) is filled with filler (6), and arc recess (7) have all been seted up to eight limits of lateral wall center, install elasticity crushing ball (8) in arc recess (7), elasticity crushing ball (8) and fire-retardant layer (4) inscribe, be provided with oversheath (5) outside fire-retardant layer (4), be provided with tensile core (9) in the cavity that forms between oversheath (5) and fire-retardant layer (4), the anti-pulling core is characterized in that a plurality of protrusions (10) which are uniformly distributed are fixedly arranged on two sides of the anti-pulling core (9) at intervals, and a flame retardant (12) is filled in a filling cavity (11) formed among the protrusions (10), the inner side wall of the outer sheath (5) and the outer side wall of the flame retardant layer (4).

2. The polyolefin insulated low-smoke halogen-free flame-retardant photovoltaic cable according to claim 1, wherein the outer sheath (5) is filled with wear-resistant particles (13).

3. The polyolefin insulated low-smoke halogen-free flame-retardant photovoltaic cable according to claim 1, characterized in that the flame-retardant layer (4) is an asbestos mesh.

4. The polyolefin insulated low-smoke halogen-free flame-retardant photovoltaic cable according to claim 1, characterized in that the filler (6) is a high-flame-retardant filler.

5. The polyolefin insulated low-smoke halogen-free flame-retardant photovoltaic cable according to claim 1, characterized in that the insulating layer (2) is made of low-smoke halogen-free flame-retardant polyolefin insulating material.

6. The polyolefin insulated low-smoke halogen-free flame-retardant photovoltaic cable according to claim 1, wherein the outer sheath (5) is made of a low-smoke halogen-free flame-retardant polyolefin sheath material.