CN112420269A

CN112420269A - Fire-resistant high temperature resistant plastic insulation control cable

Info

Publication number: CN112420269A
Application number: CN201910785029.8A
Authority: CN
Inventors: 吴学明; 吴迪
Original assignee: Jiangsu Ruiyang Cable Co ltd
Current assignee: Jiangsu Ruiyang Cable Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2021-02-26

Abstract

The invention discloses a fire-resistant high-temperature-resistant plastic insulated control cable in the technical field of plastic insulated control cables, which comprises a braided layer, five groups of insulating layers are uniformly arranged in the inner cavity of the braided layer, the inner wall of each insulating layer is wrapped with a fire-resistant layer, the inner cavity of the fire-resistant layer is provided with a conductor, the outer wall of the weaving layer is sleeved with an inner protective layer, the outer wall of the inner protective layer is sleeved with an armor layer, the outer wall of the armor layer is sleeved with a flame-retardant layer, the outer wall of the flame-retardant layer is sleeved with an outer protective layer, the conductor is wrapped by the flame-retardant layer in the device, the conductor is separated and protected, the cable is subjected to fire-resistant and high-temperature-resistant treatment from the inside, and the flame retardant layer and the inner sheath layer protect the outside of the cable, the overall fire-resistant and high-temperature-resistant performance of the cable is further improved, the probability of burning of the cable in a high-temperature environment is reduced, the probability of potential safety hazards is also reduced, and the normal work and the service life of the cable are guaranteed.

Description

Fire-resistant high temperature resistant plastic insulation control cable

Technical Field

The invention relates to the technical field of plastic insulation control cables, in particular to a fire-resistant and high-temperature-resistant plastic insulation control cable.

Background

The cable is the cable that forms by several groups of wire combinations, and current plastic insulation control cable can cause the influence to the cable body when outdoor temperature is higher at the in-process of outdoor use, if the fire-resistant high temperature resistance performance of cable itself is relatively poor, then can lead to the cable to probably take place the burning condition, causes the damage to the cable, for this reason, we provide a fire-resistant high temperature resistant plastic insulation control cable.

Disclosure of Invention

The invention aims to provide a fire-resistant high-temperature-resistant plastic insulated control cable to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a fire-resistant high temperature resistant plastics insulation control cable, includes the weaving layer, the weaving layer inner chamber evenly is provided with five insulating layers of group, insulating layer inner wall parcel has the flame retardant coating, the flame retardant coating inner chamber is provided with the conductor, the weaving layer outer wall has cup jointed interior sheath, interior sheath outer wall has cup jointed the armor, the armor outer wall has cup jointed fire-retardant layer, fire-retardant layer outer wall has cup jointed the outer jacket.

Preferably, the inner protection layer comprises an inner heat insulation layer sleeved with an outer wall of a woven layer, a fireproof layer is sleeved on the outer wall of the inner heat insulation layer, and an outer heat insulation layer is sleeved on the outer wall of the fireproof layer.

Preferably, the outer wall of the outer protective layer is uniformly provided with eight groups of heat conducting blocks, and the eight groups of heat conducting blocks are arranged in an annular array.

Preferably, three groups of supporting blocks are uniformly arranged on the outer wall of the weaving layer, and the outer wall of one side, far away from the weaving layer, of the supporting blocks is fixedly connected with the inner wall of the armor layer.

Preferably, a filling layer is arranged between the inner wall of the braided layer and the outer wall of the insulating layer, and the filling layer is a flame-retardant filling layer.

Preferably, the outer jacket is a low-smoke halogen-free flame-retardant outer jacket, and the cross-sectional thickness of the outer jacket is eight millimeters.

Compared with the prior art, the invention has the beneficial effects that: live conductor parcel through the flame retardant coating in the device, separate the conductor and protect, carry out fire-resistant high temperature resistant treatment from the cable is inside to fire-retardant layer and interior sheath are protected the cable outside, further improve the holistic fire-resistant high temperature resistance performance of cable, reduce the probability that the cable takes place the burning in high temperature environment, also reduce the probability that the potential safety hazard produced, guarantee normal work of cable and life.

Drawings

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

FIG. 2 is a schematic view of the inner sheath structure of the present invention.

In the figure: 1. weaving layer; 2. an insulating layer; 3. a refractory layer; 4. a conductor; 5. a filling layer; 6. an inner protective layer; 61. an inner insulating layer; 62. a fire barrier layer; 63. an outer insulating layer; 7. an armor layer; 8. a flame retardant layer; 9. an outer jacket; 10. a heat conducting block; 11. and (7) a supporting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme that: referring to fig. 1, the fire-resistant and high-temperature-resistant plastic insulation control cable comprises a braided layer 1, wherein the braided layer 1 is formed by braiding oxygen-free copper wires and is used for shielding external interference, ensuring that the cable cannot be influenced during working and ensuring that the cable cannot be influenced by the working of the cable;

referring to fig. 1, five groups of insulating layers 2 are uniformly arranged in an inner cavity of a braided layer 1, the insulating layers 2 are made of vulcanized ceramic rubber sheaths and used for separating a conductor 4 from the outside, a fire-resistant layer 3 is wrapped on the inner wall of the insulating layer 2, the fire-resistant layer 3 is wrapped by a calcined mica tape in a single-layer overlapping manner, the conductor 4 is wrapped, fire-resistant and high-temperature-resistant treatment is performed from the inside of the cable, the overall performance of the cable is improved, and the normal operation of the cable is ensured, the conductor 4 is arranged in the inner cavity of the fire-resistant layer 3, an inner sheath 6 is sleeved on the outer wall of the braided layer 1, an armor layer 7 is sleeved on the outer wall of the inner sheath 6, the armor layer 7 is formed by weaving fine steel wires, the overall strength of the cable is improved, the stretching resistance and tensile resistance of the cable are improved, a fire-resistant layer 8 is sleeved on the outer wall of the armor, the safety of the cable in use is improved, the service life of the cable is prolonged, the outer wall of the flame-retardant layer 8 is sleeved with the outer protective layer 9, the layers of the cable are fixedly connected, and the production connection mode of the layers of the cable is the conventional mode;

referring to fig. 2, the inner protective layer 6 includes an inner heat insulating layer 61 sleeved with an outer wall of the woven layer 1, a fireproof layer 62 is sleeved with an outer wall of the inner heat insulating layer 61, an outer heat insulating layer 63 is sleeved with an outer wall of the fireproof layer 62, the inner heat insulating layer 61 and the outer heat insulating layer 63 are both made of mineral fireproof heat insulating materials, and the fireproof layer 62 is formed by winding a mica flame-retardant tape, so that the fireproof and high-temperature-resistant performance is increased from an area behind the cable, the probability of burning of the cable is reduced, and the probability of potential safety hazards is reduced;

referring to fig. 1, the outer wall of the outer sheath 9 is uniformly provided with heat conducting blocks 10, the heat conducting blocks 10 are fixedly connected with the outer sheath 9, the heat conducting blocks 10 are made of the same material as the outer sheath 9, so that the contact area between the outer sheath 9 and the outside is increased, the heat dissipation efficiency of the cable is increased, the probability of cable combustion is reduced, the number of the heat conducting blocks 10 is eight, and the eight groups of heat conducting blocks 10 are arranged in an annular array;

referring to fig. 1, three groups of supporting blocks 11 are uniformly arranged on the outer wall of the braided layer 1, the supporting blocks 11 are fixedly connected with the braided layer 1, the supporting blocks 11 are made of rubber and can be bent, the supporting blocks 11 are arranged along the length of the cable and are used for supporting the interior of the cable to increase the overall strength of the cable, and the outer wall of one side, away from the braided layer 1, of the supporting blocks 11 is fixedly connected with the inner wall of the armor layer 7;

referring to fig. 1, a filling layer 5 is disposed between an inner wall of a braided layer 1 and an outer wall of an insulating layer 2, the filling layer 5 is a flame-retardant filling layer, and the flame-retardant filling layer is made of high-flame-retardant polyethylene, so that combustion inside the cable is prevented, and the use safety of the cable is improved;

referring to fig. 1, the outer sheath 9 is a low-smoke halogen-free flame retardant outer sheath, so that the outer sheath 9 does not generate harmful gas in a high-temperature environment, the environmental protection performance of the cable is improved, the fire-resistant and high-temperature-resistant performance of the outer sheath is increased from the outermost side of the cable, the safety of the cable is ensured, the service life of the cable is ensured, and the cross-sectional thickness of the outer sheath 9 is eight millimeters.

The working principle is as follows: live conductor 4 parcel through flame retardant coating 3, separate conductor 4 and protect, carry out fire-resistant high temperature resistant treatment from the cable is inside to fire-retardant layer 8 and interior sheath 6 protect the cable outside, further improve the holistic fire-resistant high temperature resistance performance of cable, reduce the probability of cable burning in high temperature environment, also reduce the probability that the potential safety hazard produced, guarantee cable normal work and life.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fire-resistant high temperature resistant plastic insulation control cable, includes weaving layer (1), its characterized in that: weaving layer (1) inner chamber evenly is provided with five insulating layer (2) of group, insulating layer (2) inner wall parcel has flame retardant coating (3), flame retardant coating (3) inner chamber is provided with conductor (4), weaving layer (1) outer wall has cup jointed interior sheath (6), interior sheath (6) outer wall has cup jointed armor (7), armor (7) outer wall has cup jointed fire-retardant layer (8), outer jacket (9) have been cup jointed to fire-retardant layer (8) outer wall.

2. The fire-resistant high-temperature-resistant plastic insulated control cable according to claim 1, characterized in that: the inner protection layer (6) comprises an inner heat insulation layer (61) sleeved with the outer wall of the woven layer (1), a fireproof layer (62) is sleeved on the outer wall of the inner heat insulation layer (61), and an outer heat insulation layer (63) is sleeved on the outer wall of the fireproof layer (62).

3. The fire-resistant high-temperature-resistant plastic insulated control cable according to claim 1, characterized in that: the outer wall of the outer protective layer (9) is uniformly provided with heat conducting blocks (10), the number of the heat conducting blocks (10) is eight, and the eight groups of heat conducting blocks (10) are arranged in an annular array.

4. The fire-resistant high-temperature-resistant plastic insulated control cable according to claim 1, characterized in that: the outer wall of the weaving layer (1) is evenly provided with three groups of supporting blocks (11), and the outer wall of one side, far away from the weaving layer (1), of the supporting blocks (11) is fixedly connected with the inner wall of the armor layer (7).

5. The fire-resistant high-temperature-resistant plastic insulated control cable according to claim 1, characterized in that: be provided with filling layer (5) between weaving layer (1) inner wall and insulating layer (2) outer wall, filling layer (5) are fire-retardant filling layer.

6. The fire-resistant high-temperature-resistant plastic insulated control cable according to claim 1, characterized in that: the outer jacket (9) is a low-smoke halogen-free flame-retardant outer jacket, and the cross-sectional thickness of the outer jacket (9) is eight millimeters.