CN212161330U

CN212161330U - Flexible insulation fireproof cable structure

Info

Publication number: CN212161330U
Application number: CN202020285441.1U
Authority: CN
Inventors: 张猛超
Original assignee: Hebei Dawang Longgang Cable Co ltd
Current assignee: Hebei Dawang Longgang Cable Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-12-15
Anticipated expiration: 2030-03-10

Abstract

The utility model discloses a flexible insulation fireproof cable structure, which comprises three cable cores twisted with each other, wherein the outer surface of the cable core is wrapped by an insulating layer, the gap position of the cable core is provided with a buffer filling layer, the middle position of the buffer filling layer is provided with a steel wire rope, the periphery of the buffer filling layer is provided with a shielding layer, the periphery of the shielding layer is provided with an isolating layer, a compression-resistant supporting cylinder is fixedly arranged between the shielding layer and the isolating layer, the periphery of the isolating layer is provided with a heat-insulating layer, the periphery of the heat-insulating layer is provided with a flame-retardant layer, the periphery of the flame-retardant layer is provided with a waterproof layer, the periphery of the waterproof layer is provided with an outer sheath, wherein the flame-retardant layer comprises a flame-retardant inner layer and a flame-retardant outer layer, the inner layer is, the flame-retardant layer is more environment-friendly, generates little pollution gas during combustion, and is beneficial to environmental protection.

Description

Flexible insulation fireproof cable structure

Technical Field

The utility model relates to a power transmission technical field specifically is a flexible insulation fireproof cable structure.

Background

The wire and cable industry is the second industry in China next to the automobile industry, and both the product variety satisfaction rate and the domestic market share rate exceed 90%. The total output value of the electric wire and the electric cable in China exceeds the United states worldwide, and the electric wire and the electric cable become the first country for producing the electric wire and the electric cable in the world. Along with the high-speed development of the China wire and cable industry, the number of newly added enterprises is continuously increased, and the overall technical level of the industry is greatly improved.

At present, the cable is a common tool in life, and fire-fighting equipment such as a fire elevator and a fire pump needs to keep normal operation for a certain time under the condition of fire, so that the electric wire cable for transmitting electricity of the equipment needs to have high fireproof and heat-resistant performance. In addition, general fireproof cables are limited in fireproof performance and cannot meet application occasions with higher requirements on fire prevention and explosion prevention, and meanwhile, the compression resistance of the existing cables is limited, so that cable cores are easily damaged in some compression environments, and potential safety hazards are caused. Accordingly, one skilled in the art provides a flexible insulated fireproof cable structure to solve the problems set forth in the background above.

Disclosure of Invention

An object of the utility model is to provide a flexible insulation fireproof cable structure to solve the wire and cable that whether the fire-fighting equipment or the scene of fire that proposes in the above-mentioned background art, it is if produce a large amount of poisonous and harmful gases after the burning, then cause secondary harm and pollution easily, in addition, general fireproof cable fire behavior is limited, can not satisfy to the explosion-proof application occasion that has higher requirement of fire prevention, and simultaneously, the compressive capacity of current cable is limited, the cable core is impaired easily in some pressurized environment, thereby cause the problem of potential safety hazard.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a flexible insulation fireproof cable structure, includes three cable cores of transposition each other, cable core surface parcel has the insulating layer, the clearance position of cable core is provided with the buffering filling layer, the intermediate position of buffering filling layer is provided with wire rope, the periphery of buffering filling layer is provided with the shielding layer, the shielding layer periphery is provided with the isolation layer, fixed mounting has a resistance to compression support section of thick bamboo between shielding layer and the isolation layer, the isolation layer periphery is provided with the insulating layer, the insulating layer periphery is provided with fire-retardant layer, fire-retardant layer periphery is provided with the waterproof layer, the periphery of waterproof layer is provided with the oversheath.

As a further aspect of the present invention: the flame-retardant layer is including setting up in the fire-retardant inlayer of insulating layer outlying, fire-retardant inlayer is the component of a high fire-retardant low smoke and zero halogen polyethylene material, a spacing section of thick bamboo is installed with the position embedding of insulating layer laminating to fire-retardant inlayer, fire-retardant inlayer periphery is provided with fire-retardant skin, fire-retardant outer intussuseption is filled with the powdery fire retardant of granule, evenly be provided with the spacer block between fire-retardant inlayer and the fire-retardant skin.

As a further aspect of the present invention: the insulating layer is a mica component.

As a further aspect of the present invention: the number of the limiting cylinders is four, and the limiting cylinders are uniformly distributed at the positions where the flame-retardant inner layer and the heat insulation layer are attached.

As a further aspect of the present invention: the heat insulation layer is a component made of a sponge ceramic material.

As a further aspect of the present invention: the pressure-resistant supporting cylinder is a member made of cross-linked polyolefin.

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

1. the utility model discloses the fire-retardant layering of installation is fire-retardant inlayer and fire-retardant skin, and the inlayer is the low smoke and zero halogen polyethylene material of high fire-retardant, and granular fire retardant is filled to the skin, and the cooperation is used and can be played better flame retardant efficiency, and simultaneously, fire-retardant layer environmental protection more produces few gaseous pollutants when burning, is of value to the protection of environment.

2. The utility model discloses the partition piece of installation can be fine make graininess fire retardant evenly distributed for flame retardant efficiency is better.

3. The utility model discloses the resistance to compression of cable can be improved to the resistance to compression of installation supports a section of thick bamboo to resist the foreign object heavy pressure and the pressure that the basis subsides and bring, simultaneously, a resistance to compression supports a component that is a crosslinked polyolefin material, can not make the cable lose flexibility.

4. The utility model discloses the spacing section of thick bamboo of installation can prevent that fire-retardant inlayer and insulating layer from sliding each other to inject its position.

5. The utility model discloses the shielding layer of installation makes the cable have good anti external signal interference's performance.

6. The utility model discloses the wire rope of installation makes the cable can bear bigger stress variation, makes the cable durable more, can also play the effect of protection cable core simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of a flexible insulated fireproof cable structure;

fig. 2 is a schematic structural diagram of a flame retardant layer in a flexible insulating fireproof cable structure.

In the figure: 1. an outer sheath; 2. a waterproof layer; 3. a flame retardant layer; 4. a wire rope; 5. a buffer filling layer; 6. a shielding layer; 7. An isolation layer; 8. a thermal insulation layer; 9. a compression-resistant support cylinder; 10. an insulating layer; 11. a cable core; 12. a separation block; 13. a flame retardant inner layer; 14. a limiting cylinder; 15. and a flame-retardant outer layer.

Detailed Description

Please refer to fig. 1-2, in the embodiment of the utility model, a flexible insulation fireproof cable structure, cable core 11 including three mutual transposition, 11 outer surface coating of cable core has insulating layer 10, cable core 11's clearance position is provided with buffering filling layer 5, buffering filling layer 5's intermediate position is provided with wire rope 4, buffering filling layer 5's periphery is provided with shielding layer 6, shielding layer 6 periphery is provided with isolation layer 7, fixed mounting has resistance to compression supporting cylinder 9 between shielding layer 6 and the

isolation layer

7, 7 peripheries of isolation layer are provided with

insulating layer

8, 8 peripheries of insulating layer are provided with fire-

retardant layer

3, 3 peripheries of fire-retardant layer are provided with waterproof layer 2, waterproof layer 2's periphery is provided with oversheath 1.

In order to make the fireproof performance of the cable better, in this embodiment, preferably, the flame retardant layer 3 includes a flame retardant inner layer 13 disposed at the periphery of the heat insulation layer 8, the flame retardant inner layer 13 is a high-flame-retardant low-smoke halogen-free polyethylene component, a limiting cylinder 14 is embedded in a position where the flame retardant inner layer 13 is attached to the heat insulation layer 8, a flame retardant outer layer 15 is disposed at the periphery of the flame retardant inner layer 13, a granular powdery flame retardant is filled in the flame retardant outer layer 15, and partition blocks 12 are uniformly disposed between the flame retardant inner layer 13 and the flame retardant outer layer 15.

In order to provide the cable with an insulating function, in the present embodiment, the insulating layer 10 is preferably a member made of mica.

In order to limit the positions of the flame-retardant inner layer 13 and the heat insulation layer 8 and prevent sliding, in this embodiment, it is preferable that the number of the limiting cylinders 14 is four, and the limiting cylinders are uniformly distributed at the positions where the flame-retardant inner layer 13 and the heat insulation layer 8 are attached.

In order to prevent the cable core from being damaged by high temperature, in this embodiment, the heat insulating layer 8 is preferably a member made of a sponge ceramic material.

In order to improve the compression resistance of the cable and to provide flexibility, in this embodiment, the compression-resistant support cylinder 9 is preferably a member made of cross-linked polyolefin.

The utility model discloses a theory of operation is: the utility model discloses install it to the assigned position at first when using, wire rope 4 bears partial stress variation, protection cable core 11, when meetting the conflagration, oversheath 1 is burnt at first, fire-retardant outer 15 layers of wall is burnt through next, at this moment, the fire retardant of intussuseption in fire-retardant outer 15 begins to exert flame retardant action, the spacer block 12 can be fine makes granular fire retardant evenly distributed, make flame retardant efficiency better, when the intensity of a fire is too big, flame retardant efficiency is not obvious, fire-retardant inner 13 can exert flame retardant action next, fire-retardant inner 13 is the component of sponge ceramic material, flame retardant efficiency is better, when still can't putting out a fire, isolation layer 7 plays a role, isolation layer 7 is the vacuum, no combustion object, can effectively protect cable core 11, when the cable receives the foreign object weight or basis subsides, resistance to compression supporting cylinder 9 can bear the pressure variation, protection cable core 11, the utility model discloses the fire-retardant layering of installation is fire-retardant inlayer and fire-retardant skin, and the inlayer is the low smoke and zero halogen polyethylene material of high fire-retardant, and granular fire retardant is filled to the skin, and the cooperation is used and can be played better flame retardant efficiency, and simultaneously, fire-retardant layer environmental protection more produces few gaseous pollutants when burning, is of value to the protection of environment.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A flexible insulation fireproof cable structure comprises three cable cores (11) which are twisted with each other, it is characterized in that the outer surface of the cable core (11) is wrapped with an insulating layer (10), a buffer filling layer (5) is arranged at the gap position of the cable core (11), a steel wire rope (4) is arranged in the middle of the buffer filling layer (5), a shielding layer (6) is arranged on the periphery of the buffer filling layer (5), an isolation layer (7) is arranged on the periphery of the shielding layer (6), a compression-resistant supporting cylinder (9) is fixedly arranged between the shielding layer (6) and the isolation layer (7), a heat insulation layer (8) is arranged on the periphery of the isolation layer (7), a flame retardant layer (3) is arranged on the periphery of the heat insulation layer (8), the flame-retardant coating is characterized in that a waterproof layer (2) is arranged on the periphery of the flame-retardant layer (3), and an outer sheath (1) is arranged on the periphery of the waterproof layer (2).

2. The flexible insulation fireproof cable structure according to claim 1, wherein the flame-retardant layer (3) comprises a flame-retardant inner layer (13) arranged on the periphery of the heat-insulating layer (8), the flame-retardant inner layer (13) is a high-flame-retardant low-smoke halogen-free polyethylene component, a limiting cylinder (14) is embedded in the position where the flame-retardant inner layer (13) is attached to the heat-insulating layer (8), a flame-retardant outer layer (15) is arranged on the periphery of the flame-retardant inner layer (13), a granular powdery flame retardant is filled in the flame-retardant outer layer (15), and partition blocks (12) are uniformly arranged between the flame-retardant inner layer (13) and the flame-retardant outer layer (15).

3. A flexible insulated fireproof cable construction according to claim 1, wherein the insulating layer (10) is a mica material.

4. The flexible insulation fireproof cable structure according to claim 2, wherein the number of the limiting cylinders (14) is four, and the limiting cylinders are uniformly distributed at the position where the flame-retardant inner layer (13) is attached to the heat insulation layer (8).

5. A flexible insulated fireproof cable construction according to claim 1, wherein the insulation layer (8) is a member of a spongy ceramic material.

6. A flexible insulated fireproof cable construction according to claim 1, wherein the pressure-resistant support tube (9) is a cross-linked polyolefin member.