CN211628738U

CN211628738U - Polyolefin insulation low-smoke halogen-free flame-retardant fire-resistant cable

Info

Publication number: CN211628738U
Application number: CN202020755917.3U
Authority: CN
Inventors: 石学军
Original assignee: Anhui Honghai Cable Co ltd
Current assignee: Anhui Honghai Cable Co ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-10-02
Anticipated expiration: 2030-05-09

Abstract

The utility model relates to the technical field of wires and cables, a polyolefin insulation low smoke zero halogen flame retardant fire resistant cable is disclosed, which comprises a conductor, the surface of conductor is wrapped with the mica tape, and the surface outer lane of mica tape is wrapped with around the covering, it has double-deck fire retardant layer to wind around the covering outside, double-deck fire retardant layer comprises interior fire retardant filling layer, interior fire retardant pipe filling layer, outer fire retardant filling layer and outer fire retardant pipe filling layer, interior fire retardant filling layer and interior fire retardant pipe filling layer merge into a fire retardant inlayer, and outer fire retardant filling layer and outer fire retardant pipe filling layer merge into a fire retardant skin, and interior fire retardant filling layer hugs closely in the inboard of outer fire retardant pipe filling layer, and the inboard of outer fire retardant filling layer is pasted and is established interior fire retardant pipe filling layer, the outside of double-deck fire retardant layer is wrapped with the oversheath; the utility model discloses a mica tape, inert gas, aluminium hydroxide, the fire-retardant pipe of polyolefin and the expandable graphite who sets up reach the purpose of multiple protection for the flame retardant property of this product surpasss like product far away.

Description

Polyolefin insulation low-smoke halogen-free flame-retardant fire-resistant cable

Technical Field

The utility model relates to the technical field of electric wires and cables, indicate a fire-retardant fire resisting cable of insulating low smoke and zero halogen of polyolefin especially.

Background

Since the 21 st century, the development direction of wires and cables gradually goes towards the environmental protection direction of halogen-free low-smoke flame retardation. The important cities of Beijing, Shanghai and the like in China are clearly specified: the important buildings prohibit the use of polyvinyl chloride wires and cables to avoid more casualties caused by a large amount of toxic gases such as dense smoke, hydrogen chloride and the like in the case of fire, and the adoption of halogen-free low-smoke flame-retardant cross-linked polyolefin insulated wires and cables has become a local regulation in these areas.

However, when the existing halogen-free low-smoke flame-retardant polyolefin insulated wire and cable is used, the fireproof and heat-proof performance of the existing halogen-free low-smoke flame-retardant polyolefin insulated wire and cable still cannot meet the standard of people; therefore, the utility model provides a fire-retardant fire resisting cable of insulating low smoke and zero halogen of polyolefin to solve the problem that 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 fire resisting 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: the utility model provides an insulating fire-retardant fire resisting cable of low smoke and zero halogen of polyolefin, includes the conductor, the surface coating of conductor has the mica tape, and the surface outer lane parcel of mica tape has around the covering, around the covering outside around there being double-deck fire-retardant layer, double-deck fire-retardant layer is by fire-retardant filling layer in, fire-retardant pipe filling layer in, fire-retardant filling layer and outer fire-retardant pipe filling layer constitute, fire-retardant inlayer is merged into to fire-retardant filling layer in with fire-retardant pipe filling layer in, and fire-retardant filling layer hugs closely the inboard on outer fire-retardant pipe filling layer in outer fire-retardant filling layer, and the inboard subsides of fire-retardant filling layer are established and are fired the pipe filling layer in outer, the outside parcel on double-deck fire-retardant layer has the oversheath.

As an optimal technical scheme, be equipped with fire-retardant rope in interior fire-retardant filling layer and the outer fire-retardant filling layer, it has ceramic silicon rubber to fill between the inboard circle layer of the outside circle layer of fire-retardant rope and interior fire-retardant filling layer, outer fire-retardant filling layer.

As an optimal technical scheme, interior fire-retardant pipe fills the layer and outer fire-retardant pipe fills the in-situ and is equipped with a plurality of fire-retardant pipes, and fire-retardant intussuseption is filled with expanded graphite, it has the fire retardant to fill between the outside circle layer of the inboard circle layer of interior fire-retardant filling layer, outer fire-retardant filling layer and fire-retardant pipe, and this fire retardant is aluminium hydroxide.

As an optimal technical scheme, fill glass fiber between the outside circle layer that the inboard circle layer on double-deck fire-retardant layer and interior fire-retardant filling layer, interior fire-retardant pipe fill layer, outer fire-retardant filling layer and outer fire-retardant pipe fill layer.

As an optimized technical proposal of the utility model, the outer sheath is formed by extruding and wrapping halogen-free low-smoke flame-retardant cross-linked polyolefin material.

The utility model discloses the beneficial effect who reaches is: the utility model provides a polyolefin insulation low smoke zero halogen flame retardant fire resistant cable, which achieves the purpose of multiple protection through the mica tape, the flame retardant rope, the ceramic silicon rubber, the aluminum hydroxide, the expanded graphite and the glass fiber, so that the flame retardant property of the product far exceeds the similar products; and the expanded graphite and the aluminum hydroxide have a synergistic flame-retardant effect, and the flame-retardant effect is better.

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;

FIG. 2 is a schematic view of the structure of the double-layer flame retardant layer of the present invention;

FIG. 3 is a schematic structural view of the inner flame-retardant filling layer or the outer flame-retardant filling layer of the present invention;

FIG. 4 is the schematic view of the structure of the inner flame-retardant tube filling layer or the outer flame-retardant tube filling layer of the present invention

Reference numbers in the figures: 1. a conductor; 2. mica tapes; 3. wrapping a covering; 4. a double flame retardant layer; 41. an inner flame-retardant filler layer; 42. an inner flame-retardant tube filling layer; 43. an outer flame-retardant filler layer; 44. an outer flame retardant tube charge layer; 45. a flame retardant rope; 46. ceramic silicone rubber; 47. a flame retardant tube; 48. a flame retardant; 49. glass fibers; 5. an outer sheath.

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. 1-4, the utility model provides a pair of fire-retardant fire resisting cable of insulating low smoke and zero halogen of polyolefin, including conductor 1, the surface coating of conductor 1 has mica tape 2, and the surface outer lane parcel of mica tape 2 has around covering 3, it has double-deck fire-retardant layer 4 to wind the covering 3 outside, double-deck fire-retardant layer 4 comprises interior flame retardant filling layer 41, interior flame retardant pipe filling layer 42, outer flame retardant filling layer 43 and outer flame retardant pipe filling layer 44, interior flame retardant filling layer 41 and interior flame retardant pipe filling layer 42 merge into a fire-retardant inlayer, and outer flame retardant filling layer 43 and outer flame retardant pipe filling layer 44 merge into a fire-retardant skin, and interior flame retardant filling layer 41 hugs closely in the inboard of outer flame retardant pipe filling layer 44, and the inboard of outer flame retardant filling layer 43 is pasted and is established interior flame retardant pipe filling layer 42, the outside parcel of double-deck fire-retardant layer 4 has oversheath 5.

Further, flame-retardant ropes 45 are arranged in the inner flame-retardant filling layer 41 and the outer flame-retardant filling layer 43, and ceramic silicon rubber 46 is filled between the outer ring layer of the flame-retardant ropes 45 and the inner ring layers of the inner flame-retardant filling layer 41 and the outer flame-retardant filling layer 43; the flame-retardant rope 45 and the ceramic silicon rubber 46 both have flame retardancy, and effectively improve the novel flame-retardant property.

Furthermore, a plurality of flame-retardant tubes 47 are arranged in the inner flame-retardant tube filling layer 42 and the outer flame-retardant tube filling layer 44, expanded graphite is filled in the flame-retardant tubes 47, a flame retardant 48 is filled between the inner ring layer of the inner flame-retardant filling layer 41 and the outer ring layer of the outer flame-retardant filling layer 43 and the outer ring layer of the flame-retardant tubes 47, the flame retardant 48 is aluminum hydroxide, the expanded graphite and the aluminum hydroxide can effectively prevent fire from happening, and the expanded graphite and the aluminum hydroxide have a synergistic flame-retardant effect, so that the flame-retardant effect is better.

Furthermore, glass fibers 49 are filled between the inner ring layer of the double-layer flame-retardant layer 4 and the outer ring layers of the inner flame-retardant filling layer 41, the inner flame-retardant tube filling layer 42, the outer flame-retardant filling layer 43 and the outer flame-retardant tube filling layer 44, and the glass fibers 49 can fully ensure the fire resistance, high temperature resistance and insulation of the cable.

Further, the outer sheath 5 is formed by extruding and wrapping a halogen-free low-smoke flame-retardant cross-linked polyolefin material.

Specifically, the method comprises the following steps:

the utility model provides a fire-retardant fire resisting cable of polyolefin insulation low smoke and zero halogen, the mica tape 2 that sets up, interior flame retardant filling layer 41, interior flame retardant pipe filling layer 42, outer flame retardant filling layer 43 and outer flame retardant pipe filling layer 44 can reach the purpose of multiple protection, make the fire behaviour of this product surpass like product far away; in addition, the expanded graphite and the aluminum hydroxide jointly form the flame-retardant material of the double-layer flame-retardant layer 4, so that the flame-retardant material has a synergistic flame-retardant effect and a better flame-retardant effect, and the inert gas can effectively prevent fire from happening.

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 an insulating low smoke and zero halogen fire-retardant fire resisting cable of polyolefin, a serial communication port, including conductor (1), the surface coating of conductor (1) has mica tape (2), and the surface outer lane parcel of mica tape (2) has around covering (3), it has double-deck fire-retardant layer (4) to wind around covering (3) outside, double-deck fire-retardant layer (4) is by fire-retardant filling layer (41) in, fire-retardant pipe filling layer (42) in, fire-retardant filling layer (43) and fire-retardant pipe filling layer (44) outside constitute, fire-retardant filling layer (41) and fire-retardant pipe filling layer (42) in merge into a fire-retardant inner layer in, fire-retardant pipe filling layer (42) in outer fire-retardant filling layer (43) and outer fire-retardant pipe filling layer (44) merge into in and fire-retardant filling layer (41) in, fire-retardant pipe filling layer (42) in the inboard subsides of outer fire-retardant filling layer (43) are established, the outer side of the double-layer flame-retardant layer (4) is wrapped with an outer sheath (5).

2. The polyolefin insulation low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, characterized in that flame-retardant ropes (45) are arranged in the inner flame-retardant filling layer (41) and the outer flame-retardant filling layer (43), and ceramic silicon rubber (46) is filled between the outer ring layer of the flame-retardant ropes (45) and the inner ring layers of the inner flame-retardant filling layer (41) and the outer flame-retardant filling layer (43).

3. The polyolefin insulation low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, wherein a plurality of flame-retardant tubes (47) are arranged in the inner flame-retardant tube filling layer (42) and the outer flame-retardant tube filling layer (44), expanded graphite is filled in the flame-retardant tubes (47), a flame retardant (48) is filled between the inner ring layer of the inner flame-retardant filling layer (41) and the outer ring layer of the outer flame-retardant filling layer (43) and the outer ring layer of the flame-retardant tubes (47), and the flame retardant (48) is aluminum hydroxide.

4. The polyolefin insulated low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, characterized in that glass fiber (49) is filled between the inner ring layer of the double-layer flame-retardant layer (4) and the inner flame-retardant filling layer (41), the inner flame-retardant tube filling layer (42), the outer flame-retardant filling layer (43) and the outer ring layer of the outer flame-retardant tube filling layer (44).

5. The polyolefin insulation low-smoke halogen-free flame-retardant fire-resistant cable according to claim 1, characterized in that the outer sheath (5) is extruded from a halogen-free low-smoke flame-retardant cross-linked polyolefin material.