CN218471644U

CN218471644U - B1-level flame-retardant halogen-free low-smoke low-heat-release-quantity environment-friendly cable

Info

Publication number: CN218471644U
Application number: CN202222026851.6U
Authority: CN
Inventors: 刘星; 王福裕; 游海宁
Original assignee: Guangzhou Cable Works Co Ltd
Current assignee: Guangzhou Cable Works Co Ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2023-02-10
Anticipated expiration: 2032-08-02

Abstract

The utility model discloses a B1-level flame-retardant halogen-free low-smoke low-heat-release environment-friendly cable, which comprises a plurality of cable cores twisted with each other, wherein each cable core comprises a copper conductor and an extruded cross-linked polyethylene insulating layer wrapped outside the copper conductor, and the outer side of each cable core is sequentially wrapped with an inner-layer wrapped glass fiber belt, an extruded ceramic oxygen-isolating layer, an outer-layer wrapped glass fiber belt and an extruded ceramic polyolefin outer sheath; the utility model discloses set gradually the inlayer in the cable core outside and wind a packet glass fiber area, crowded package pottery ization separates the oxygen layer, the skin winds a packet glass fiber area and crowded package pottery ization polyolefin oversheath to at the inlayer around a packet glass fiber area, crowded package pottery ization separates the oxygen layer, the skin does not leave any space around between packet glass fiber area and the crowded package pottery ization polyolefin oversheath, makes the inside oxygen content of cable less, guarantees that the cable has excellent high fire-retardant, fire behavior.

Description

B1-level flame-retardant halogen-free low-smoke low-heat-release-quantity environment-friendly cable

Technical Field

The utility model relates to the technical field of cables, specifically a fire-retardant low cigarette low heat release environmental protection cable of nothing of B1 level.

Background

At present, the domestic flame-retardant cable is generally designed according to GB/T19666 'general rules of flame-retardant and fire-resistant electric wires and cables or optical cables' and is generally flame-retardant grade C/grade B, the flame-retardant performance of the cable is determined only by taking the flame spread height 'the carbonization range on a sample is not more than 2.5m above the bottom edge of a blast burner', namely, the flame-retardant performance of the cable is only ensured, the cable has self-extinguishing performance after leaving flame, the cable can be halogenated or halogen-free, a large amount of toxic smoke can be generated under the actual fire condition, and great difficulty is caused to escape and rescue.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-retardant low smoke and low heat release environmental protection cable of B1 level to solve current flame retarded cable and only guarantee the flame retardant property of cable, the cable has the performance of putting out certainly after leaving flame, relates to the cable and can have steamed, also can not have steamed, can produce a large amount of poisonous smog under the actual fire circumstances, causes the problem of very big difficulty to fleeing for one's life and rescue.

The utility model discloses according to GB/T31247 "cable and optical cable combustion performance are hierarchical" design, it is 1.5m to the requirement of flame spread height.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant low smoke and low heat release environmental protection cable of zero smoke of B1 level, includes the cable core of several mutual transposition, the cable core includes copper conductor and the crowded package crosslinked polyethylene insulating layer of parcel in the copper conductor outside, the cable core outside wraps up in proper order has the inlayer to separate the oxygen layer around package glass fiber area, crowded package pottery, the skin is around package glass fiber area, crowded package pottery polyolefin oversheath.

And the gaps between the cable cores are filled with flame-retardant filling ropes.

The copper conductor is formed by stranding a plurality of copper wires.

The extruded ceramic oxygen separation layer is located between the inner-layer wrapped glass fiber belt and the outer-layer wrapped glass fiber belt.

Wherein, the outer sheath of the extruded ceramic polyolefin is positioned at the outermost layer.

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

the utility model discloses set gradually the inlayer in the cable core outside and wind a packet glass fiber area, crowded package pottery ization separates the oxygen layer, the skin winds a packet glass fiber area and crowded package pottery ization polyolefin oversheath to at the inlayer around a packet glass fiber area, crowded package pottery ization separates the oxygen layer, the skin does not leave any space around between packet glass fiber area and the crowded package pottery ization polyolefin oversheath, makes the inside oxygen content of cable less, guarantees that the cable has excellent high fire-retardant, fire behavior.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention.

In the figure: 1. a copper conductor; 2. extruding and wrapping a crosslinked polyethylene insulating layer; 3. a flame retardant filler rope; 4. the inner layer is wrapped with a glass fiber tape; 5. extruding a ceramic oxygen isolation layer; 6. the outer layer is wrapped with a glass fiber tape; 7. and extruding a ceramic polyolefin outer sheath.

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.

As shown in fig. 1, the utility model provides a technical scheme: the utility model provides a fire-retardant low smoke and low heat release volume environmental protection cable of B1 level, includes the cable core of several mutual transposition, and the cable core outside wraps up in proper order has inlayer to wrap around package glass fiber tape 4, crowded package pottery and separates oxygen layer 5, skin to wrap around package glass fiber tape 6, crowded package pottery polyolefin oversheath 7.

The number of the cable cores is set according to actual requirements, at least 2 cable cores are arranged, the number of the cable cores can be 2, 3, 4, 5 and the like, each cable core comprises a copper conductor 1 and an extruded and crosslinked polyethylene insulating layer 2 wrapping the outside of the copper conductor 1, and flame-retardant filling ropes 3 are filled in gaps among the cable cores;

based on the arrangement, the environment-friendly cable provided by the embodiment of the utility model has the advantages of high temperature resistance, high current-carrying capacity, low processing energy consumption and no toxic gas emission in the processing process through the extruded cross-linked polyethylene insulating layer 2 wrapped outside the copper conductor 1, and can be recycled, so that the cable has the advantage of environment protection;

the inner-layer lapped glass fiber tape 4 and the outer-layer lapped glass fiber tape 6 are arranged, so that the cable can have high mechanical performance;

through set up crowded package pottery between inner layer is around package glass fiber area 4 and outer package glass fiber area 6 and separate oxygen layer 5 for any space is not left to cable inside, makes the inside oxygen content of cable less, guarantees that the cable has excellent high fire-retardant, fire resistance.

The copper conductor 1 is formed by stranding a plurality of copper wires, and the copper conductor 1 is formed by stranding a plurality of copper wires, so that the flexibility of the copper conductor 1 is improved, and the flexibility of the cable is improved.

The halogen-free low-smoke flame-retardant extruded ceramic polyolefin outer sheath 7 is arranged on the outermost layer, and the halogen-free low-smoke flame-retardant extruded ceramic polyolefin outer sheath 7 has the advantages of excellent flame retardant property, no halogen, low smoke and no toxicity, so that when the cable is burnt in fire, the extruded ceramic polyolefin outer sheath 7 ensures that the cable does not drip, and the integrity of the cable after burning is ensured.

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.

Claims

1. The utility model provides a fire-retardant low smoke and low heat release environmental protection cable of B1 level, includes the cable core of several mutual transposition, the cable core includes copper conductor (1) and parcel crowded package crosslinked polyethylene insulating layer (2) at copper conductor (1) outside, its characterized in that: the cable core outside wraps up in proper order has inlayer around package glass fiber area (4), crowded package pottery ization oxygen layer (5), skin around package glass fiber area (6), crowded package pottery ization polyolefin oversheath (7).

2. The B1-grade flame-retardant halogen-free low-smoke low-heat-release environment-friendly cable according to claim 1, characterized in that: and the gaps between the cable cores are filled with flame-retardant filling ropes (3).

3. The B1-grade flame-retardant halogen-free low-smoke low-heat-release environment-friendly cable according to claim 1, characterized in that: the copper conductor (1) is formed by stranding a plurality of copper wires.

4. The B1-grade flame-retardant halogen-free low-smoke low-heat-release environment-friendly cable according to claim 1, characterized in that: the extruded ceramic oxygen isolation layer (5) is located between the inner-layer wrapped glass fiber tape (4) and the outer-layer wrapped glass fiber tape (6).

5. The B1-grade flame-retardant halogen-free low-smoke low-heat-release environment-friendly cable according to claim 1, characterized in that: the outer sheath (7) of the extruded ceramic polyolefin is positioned at the outermost layer.