CN218471620U

CN218471620U - Novel high-performance B1-level halogen-free low-smoke flame-retardant cable

Info

Publication number: CN218471620U
Application number: CN202221776491.5U
Authority: CN
Inventors: 王福裕; 王思远; 刘星
Original assignee: Guangzhou Cable Works Co Ltd
Current assignee: Guangzhou Cable Works Co Ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2023-02-10
Anticipated expiration: 2032-07-08

Abstract

The utility model relates to a power cable technical field discloses a novel low cigarette flame retarded cable of high performance B1 level zero halogen, include: the utility model discloses a cable core, including the fire-retardant packing rope in the insulating outside of a plurality of cable core and the inoxidizing coating that is located the cable core outside, the inoxidizing coating is including being located the fire-retardant packing rope in the cross-linked polyethylene insulating outside to and by interior and the second that is located the fire-retardant packing rope outside is around package glass fiber area, crowded package oxygen layer, steel band armor, first package glass fiber area and crowded package oversheath of wrapping, the utility model discloses an anaerobic copper conductor, cross-linked polyethylene insulating material, the high sheath material that just gives out heat of oxygen index is low, and its tensile strength and elongation at break have the advantage, resist tensile force destruction, absorb shock strong ability, and the cable possesses overall structure compactness, and the cooperation is inseparable between the layer and the layer, and structural strength is high, and is not fragile, is provided with oxygen layer, armor and flame retardant coating and is used for fire prevention, uses safe and reliable, longe-lived.

Description

Novel high-performance B1-level halogen-free low-smoke flame-retardant cable

Technical Field

The utility model relates to a power cable technical field specifically is a novel low cigarette flame retarded cable is not had to high performance B1 level.

Background

With the rapid development of economy, various key projects are built rapidly, particularly, people in subway stations, hospitals, markets and the like are dense and congested, and once fire signs appear, not only is the national property loss caused, but also the life safety of people is threatened more seriously. As a novel flame-retardant cable, the B1-level halogen-free low-smoke flame-retardant cable not only needs to examine the charring height of bundled combustion, but also needs to examine the heat release, smoke generation characteristics and the like of the cable, and has more rigorous requirements on material selection, structure and process of the cable, more excellent material performance, more reasonable process structure and more rigorous process parameters. The product can be widely applied to densely populated public places such as high-rise buildings, markets, schools, subway stations, airports, stadiums, exhibition halls, hospitals and the like, can provide safety for daily life of people, and has wide application prospect.

However, the conventional B1-grade flame-retardant cable mostly adopts high-flame-retardant low-smoke halogen-free polyolefin, the flame-retardant effect is general, the flame-retardant performance of the cable is unstable, and the combustion heat release of the cable is not ideal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel low cigarette flame retarded cable is not had to high performance B1 level to solve the current B1 level flame retarded cable flame retardant efficiency who proposes in the above-mentioned background art general, cable flame retardant property is unstable, and the unsatisfactory problem of cable combustion heat release.

In order to achieve the above purpose, the utility model provides a following technical scheme: a novel high-performance B-level halogen-free low-smoke flame-retardant cable comprises: a plurality of cable core and the inoxidizing coating that is located the cable core outside, the cable core includes: the conductor, the double-sided synthetic mica tape and the cross-linked polyethylene insulation which are located on the outer side of the conductor from inside to outside are adopted as the protective layer, and the protective layer comprises a cross-linked polyethylene insulation outer side flame-retardant filling rope, and a second wrapping glass fiber tape, an extruded oxygen-insulating layer, a steel tape armor, a first wrapping glass fiber tape and an extruded outer sheath which are located on the outer side of the flame-retardant filling rope from inside to outside.

Further, the conductor is made of an oxygen-free copper material.

Furthermore, the second lapped glass fiber belt has two layers, and the overlapping rate of the second lapped glass fiber belt is 45% -55% when the second lapped glass fiber belt is wound.

Further, when the cable core is a single cable core, the steel strip armor is made of stainless steel, and when the cable core is a plurality of cable cores, the steel strip armor is a galvanized steel strip.

Further, the steel tape armor is of an inner-layer structure and an outer-layer structure, and the winding gap of the inner steel tape of the steel tape armor is close to the middle part of the outer steel tape.

Furthermore, the flame-retardant filling rope is filled between the second wrapped glass fiber tape and the cross-linked polyethylene insulation, and the cable is round after the flame-retardant filling rope is filled.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a first package glass fiber band, steel band armor and crowded package that set up separate the oxygen layer and realized when novel high performance B1 level does not have steamed low cigarette flame retarded cable and uses, adopt anaerobic copper conductor, crosslinked polyethylene insulating material, the high sheath material that just gives out heat of oxygen index is low, its tensile strength and elongation at break have the advantage, resist tensile force destruction, the absorption impact ability is strong, can bear 4h voltage test (4U 0) and do not puncture, compare and have the advantage in like product more.

The cable possesses overall structure compactness, and the cooperation is inseparable between the layer, and structural strength is high, and is not fragile, is provided with oxygen barrier, armor and flame retardant coating and is used for fire-retardant fire prevention, uses safe and reliable, and longe-lived, the flame spreads project performances such as height, cable heat release, product cigarette characteristic, single burning, smoke density, burning drippage/particle grade, flue gas toxicity grade and corrosivity more excellent, and the quality is higher, avoids the shortest board.

Drawings

Fig. 1 is a perspective view of a novel high-performance B1-level halogen-free low-smoke flame-retardant cable of the present invention;

fig. 2 is a right sectional view of the novel high-performance B1-level halogen-free low-smoke flame-retardant cable of the present invention;

fig. 3 is a front view of the novel high-performance B1-level halogen-free low-smoke flame-retardant cable.

In the figure: 1-extruding an outer sheath; 2-wrapping a first glass fiber tape; 3-steel tape armoring; 4-extruding an oxygen-isolating layer; 5-wrapping a second glass fiber tape; 6-flame retardant filling ropes; 7-crosslinked polyethylene insulation; 8-double-sided synthesis of mica tapes; 9-a conductor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a novel high performance B1 level halogen-free low smoke flame retardant cable comprises: a plurality of cable core and the inoxidizing coating that is located the cable core outside, the cable core includes: conductor 9 reaches two-sided synthetic mica tape 8 and the insulating 7 of crosslinked polyethylene that are located the conductor 9 outside from inside to outside, and the inoxidizing coating is including being located the fire-retardant filler rope 6 in the insulating 7 outside of crosslinked polyethylene to and the second that is located the fire-retardant filler rope 6 outside from inside to outside around package glass fiber tape 5, crowded package oxygen layer 4, steel band armor 3, first package glass fiber tape 2 and crowded package oversheath 1.

The conductor 9 is an oxygen-free copper material, the second wrapped glass fiber tape 5 has two layers, and the overlapping rate of the second wrapped glass fiber tape 5 is 45-55% when the second wrapped glass fiber tape is wound.

When the cable core is single, steel band armor 3 is stainless steel, and when the cable core was many, steel band armor 3 was the galvanized steel band, and steel band armor 3 is the inside and outside layer structure, and the winding clearance of 3 inlayer steel bands of steel band armor is close to the position that outer steel band leaned on the centre, and fire-retardant packing rope 6 is filled at the second around between package glass fiber tape 5 and the crosslinked polyethylene is insulating, and the stranding is circular after fire-retardant packing rope 6 is filled.

1. A conductor: meets the I/GL 4.001 conductor of cable manufacturing standard.

2. Refractory layer: a double-sided synthetic mica tape is adopted for wrapping,

3. insulation of crosslinked polyethylene: and extruding and wrapping by adopting silane cross-linking material. The surface should be round, smooth, uniform in color and luster, and free from color mixing, oil stain, protrusion, looping, obvious particles, impurity coke particles, air bubbles, air holes, mechanical damage and the like.

4. Cabling: the flame-retardant rope is adopted for filling, the finished cable is rounded, and the filling can be properly increased and decreased on the premise of ensuring the round appearance.

5. Cabling and lapping: and (2) lapping by adopting a glass fiber tape (hereinafter referred to as a glass fiber tape), and overlapping by 45-55 percent. Note: due to the limitation of equipment in part of specifications, a layer of glass fiber tape can be lapped by 10-20% to fix the cable core, and then two layers of glass fiber tapes can be lapped by 45-55% to form the cable.

6. An oxygen barrier layer: and (3) extruding and wrapping by using a large wire material or a small wire material of HW495 in the east Asian of Shanghai province according to the outer diameter of the finished cable wrapping (the outer diameter of the finished cable wrapping is less than 30mm, the small wire material of HW495 is used, and otherwise, the large wire material is used). The surface should be round, smooth, uniform in color and luster, and free from color mixing, oil stain, protrusion, looping, obvious particles, impurity coke particles, air bubbles, air holes, mechanical damage and the like. Extrusion reference temperature: 110-120-130-145-145-145 +/-5 ℃, and can be adjusted according to the actual plasticizing condition.

7. Steel tape armoring: steel tape for armoring: the single-core product adopts a non-magnetic metal belt (stainless steel belt), and the multi-core product adopts a galvanized steel belt. The armored steel strip adopts double-strip-gap lapping, the direction, the pitch and the gap of the lapping accord with the specification of a file, and the gap of the inner steel strip is covered by the position close to the middle of the outer steel strip. The steel band connection must be welded firmly, and the welding position should be smooth and have no burr and be treated with rust-proof treatment.

8. An oxygen-isolating layer is wrapped: after the WDZB1N-YJY extruded oxygen-insulating layer is wrapped, and after the WDZB1N-YJY63/WDZB1N-YJY23 steel belt armor is wrapped with two layers of glass fiber belts by 45% -55% in an overlapping mode.

9. Outer sheath: the composite material is extruded by adopting a Linhai Asiadong HW461-9 material (a single-core and armless product adopts a 3# material, the outer diameter of the front part of an armoring product sheath is less than 30mm, a 2# small wire material is adopted, otherwise a 1# large wire material is adopted), the surface of the sheath is round and smooth, the color and luster are uniform, and the phenomena of color mixing, oil stain, bulge, sleeve opening, obvious particles, impurity coke particles, bubble air holes, mechanical damage and the like cannot occur.

The main technical indexes of the product passing detection are as follows:

the working principle is as follows: when the novel high-performance B1-level halogen-free low-smoke flame-retardant cable is used, the oxygen-free copper conductor, the cross-linked polyethylene insulating material and the sheath material with high oxygen index and low heat productivity are adopted, so that the tensile strength and the elongation at break of the cable are superior, the cable resists tensile force damage, has strong impact absorption capacity, can bear a 4h voltage test (4U 0) and is not broken down, and has more advantages compared with similar products.

Claims

1. A novel high performance B1 level halogen-free low smoke flame retardant cable comprises: a plurality of cable core and the inoxidizing coating that is located the cable core outside, its characterized in that: the cable core includes: conductor (9) and by interior to outer two-sided synthetic mica tape (8) and the insulating (7) of crosslinked polyethylene that are located the conductor (9) outside, the inoxidizing coating is including being located the fire-retardant filling rope (6) in crosslinked polyethylene insulating (7) outside to and by interior to the second that is located the fire-retardant filling rope (6) outside outward around package glass fiber tape (5), crowded package separates oxygen layer (4), steel band armor (3), first package glass fiber tape (2) and crowded package oversheath (1).

2. The novel high-performance B1-level halogen-free low-smoke flame-retardant cable according to claim 1 is characterized in that: the conductor (9) is made of oxygen-free copper material.

3. The novel high-performance B1-grade halogen-free low-smoke flame-retardant cable according to claim 1, characterized in that: the second lapping glass fiber tape (5) has two layers, and the overlapping rate of the second lapping glass fiber tape (5) is 45% -55% when the second lapping glass fiber tape is wound.

4. The novel high-performance B1-grade halogen-free low-smoke flame-retardant cable according to claim 1, characterized in that: when the cable core is a single cable core, the steel strip armor (3) is made of stainless steel, and when the cable core is a plurality of cable cores, the steel strip armor (3) is a galvanized steel strip.

5. The novel high-performance B1-level halogen-free low-smoke flame-retardant cable according to claim 1 is characterized in that: the steel belt armor (3) is of an inner-layer structure and an outer-layer structure, and winding gaps of inner steel belts of the steel belt armor (3) are close to the middle part of the outer steel belts.

6. The novel high-performance B1-level halogen-free low-smoke flame-retardant cable according to claim 1 is characterized in that: the flame-retardant filling rope (6) is filled between the second lapping glass fiber tape (5) and the cross-linked polyethylene insulation, and the cable is round after the flame-retardant filling rope (6) is filled.