CN213815609U

CN213815609U - Flexible mineral insulation fireproof cable

Info

Publication number: CN213815609U
Application number: CN202023247189.4U
Authority: CN
Inventors: 方涌东
Original assignee: Guangdong Shengyu Cable Industrial Co ltd
Current assignee: Guangdong Shengyu Cable Industrial Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-07-27
Anticipated expiration: 2030-12-29

Abstract

The utility model provides a flexible mineral insulation fireproof cable, including predetermined quantity's cable core, each the cable core from interior to exterior includes copper conductor, inner insulating layer and a flame retardant coating in proper order, the cable still includes from interior to exterior in proper order the cladding be in the filling layer of cable core periphery, an outer insulating layer, an isolation layer, a ceramic silicon rubber layer, a fire-retardant layer, a flexible restrictive coating of high strength and an outer fireproof paint layer, the filling layer intussuseption is filled with fire-retardant rope of low smoke and zero halogen and high strength wire, the flexible restrictive coating of high strength intussuseption is filled with high strength wire. The flexible mineral insulation fireproof cable can maintain stable and smooth signal transmission in a long time under the conditions of high temperature and fire, has high safety, good shielding effect, excellent tensile property, wear resistance, heat dissipation and strength, long service life and high practicability.

Description

Flexible mineral insulation fireproof cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a flexible mineral insulation fireproof cable.

Background

With the rapid development of economy and the rapid popularization of electric power in China, the cable is widely applied to various rows and places as a carrier of electric power transportation, the electric power safety is very important, and particularly in places such as rail transit, oil wells and nuclear power stations, the cable has higher requirements on the safety of the cable in case of fire. When a fire disaster occurs, the cable often cannot transmit signals due to poor fire resistance and flame retardance and poor shielding anti-interference performance, alarm is blocked, rescue is not timely, or the cable is damaged and cannot be powered, so that personnel escape is blocked, and finally huge personnel and property loss is caused. In addition, the cable has the disadvantages of poor tensile and compression resistance, low strength, and short life. Therefore, it is necessary to provide a cable with high fire resistance, high interference resistance, and stable signal transmission for a certain period of time in case of fire.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible thermal-insulated fireproof cable that refractiveness is high, interference immunity is strong, high temperature resistant, signal transmission is stable.

For reaching this purpose, the utility model provides a flexible mineral insulation fireproof cable, cable core including predetermined quantity, each the cable core from interior to exterior includes copper conductor, internal insulation layer and a flame retardant coating in proper order, the cable still includes from interior to exterior in proper order the cladding be in the filling layer of cable core periphery, an outer insulating layer, an isolation layer, a ceramic silicon rubber layer, a fire-retardant layer, a high strength flexible restrictive coating and an outer fireproof paint layer, the filling in situ is filled with fire-retardant rope of low smoke and zero halogen and high strength wire, the high strength flexible restrictive coating intussuseption is filled with high strength wire.

Further preferably, the filling layer is filled with water-absorbing fibers.

Further preferably, the heat dissipation pipe is filled in the filling layer.

Preferably, the inner insulating layer is formed by wrapping a pure gold mica tape, and the outer insulating layer is made of an asbestos material.

Further preferably, an inner fireproof paint layer is arranged outside the ceramic silicon rubber layer.

The utility model discloses following beneficial effect has: the utility model provides a flexible mineral insulation fireproof cable can maintain stable unblocked carrying on signal transmission in the longer time under high temperature, the conflagration condition, and the security is high, in addition, flexible mineral insulation fireproof cable has good shielding effect, and pull resistance, wearability and thermal diffusivity are good, long service life.

Outer fireproof paint layer plays one-level fire prevention effect, fire-retardant layer plays second grade fire prevention fire-retardant effect, interior fireproof paint layer with pottery silica gel layer plays the thermal-insulated fire prevention fire-retardant effect of tertiary heat insulation, the filling layer with the flame retardant coating plays the thermal-insulated fire prevention fire-retardant effect of level four, and multistage effect mutually supports each other, has improved the high temperature resistant of cable, fire prevention fire behavior, can give under the high temperature conflagration condition the cable core is one layer of protection, makes the cable also can realize stable signal transmission under the high temperature conflagration condition, provides the people in the conflagration and reports to the police and saves oneself convenience and chance, makes the people of saving a fire can in time launch the rescue.

The filling layer is filled with low smoke and zero halogen fire-retardant rope and high strength wire, makes when the filling layer has the fire behavior, still improved the intensity of cable, it has absorbent fiber still to fill in the filling layer, can take away the moisture of infiltration fast and shift, keeps the inside drying of cable, avoids moisture to lead to the cable overheated with ageing, and life subtracts the weak point. Still pack in the packing layer and have the cooling tube can be fine dispel the heat and keep apart external heat to cable inside, avoid the interior high temperature of cable.

Drawings

Figure 1 is the utility model provides a flexible mineral insulation fireproof cable structure sketch map.

Detailed Description

The embodiments described below are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, a flexible mineral insulation fireproof cable is provided, which comprises cable cores of a predetermined number, wherein each cable core sequentially comprises a copper conductor 1, an inner insulating layer 2 and a fireproof layer 3 from inside to outside, and the cable further comprises a filling layer 4, an outer insulating layer 5, an isolating layer 6, a ceramic silicon rubber layer 7, a flame retardant layer 9, a high-strength flexible sheath layer 10 and an outer fireproof paint layer 11, wherein the filling layer, the outer insulating layer and the fireproof layer are sequentially coated on the periphery of the cable core from inside to outside.

The filling layer 4 is filled with low-smoke halogen-free flame-retardant rope and high-strength metal wire, so that the filling layer 4 has flame retardant property and simultaneously also improves the strength of the cable, the high-strength flexible sheath layer 10 is filled with the high-strength metal wire, the strength of the high-strength flexible sheath layer 10 is improved, the resistance of the cable to gnawing and biting animals such as rats and ants and using dragging damage is increased, and the service life of the cable is prolonged.

Further preferably, the filling layer 4 is filled with water-absorbing fibers, so that permeated water can be quickly pumped away and transferred, the dryness inside the cable is kept, the phenomenon that the cable is overheated due to accelerated aging of the water rubber layer is avoided, and the service life is shortened. And a radiating pipe is filled in the filling layer 4. Closely pack in each the cable core with the clearance of outer insulating layer 5 the low smoke and zero halogen fire-retardant rope high strength wire the fibre that absorbs water reaches the cooling tube, furthest makes no clearance remains between the cable core, reduce the air with the contact surface of cable core reaches oxygen, fire-retardant effect, simultaneously, the packing of cooling tube can be fine dispel the heat and keep apart the external heat to cable inside, avoids the interior high temperature of cable.

Preferably, the inner insulating layer 2 is formed by wrapping a pure gold mica tape, and the outer insulating layer 5 is made of an asbestos material. The cable cores are separately arranged in a spaced mode, a good shielding effect can be achieved, the outer insulating layer 5 is arranged outside each cable core, the inner insulating layer 2 is matched with the outer insulating layer 5, mutual interference between the cable cores and interference from the outside can be effectively avoided, and therefore stable signal transmission is guaranteed.

Preferably, an inner fireproof paint layer 8 is arranged outside the ceramic silicon rubber layer 7. The ceramic silicon rubber has the characteristics of excellent fire resistance, flame retardance, low smoke, no toxicity and the like, the extrusion molding process is simple, residues after combustion are hard ceramic shells, and hard shells are not melted and dropped in a fire environment, so that the ceramic silicon rubber can play a firm protection role in smooth power transmission under the fire condition. Outer fireproof paint layer 11 plays the one-level fire prevention effect, fire-retardant layer 9 plays the fire-retardant effect of second grade fire prevention, interior fireproof paint layer 8 with pottery silica gel layer 7 plays the thermal-insulated fire prevention fire-retardant effect of tertiary heat insulation, filling layer 4 with flame retardant coating 3 plays the thermal-insulated fire prevention fire-retardant effect of level four, and multistage effect mutually supports each other, has improved the high temperature resistant of cable, fire prevention fire behavior, can give under the high temperature conflagration condition the cable core is protection layer upon layer, makes the cable also can realize stable signal transmission under the high temperature conflagration condition, provides the convenience and the chance of reporting to the police and saving oneself for the people in the conflagration, makes the people of saving a fire can in time launch the rescue.

The flexible mineral insulation fireproof cable can maintain stable and smooth signal transmission in a long time under the conditions of high temperature and fire, and is high in safety.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims.

Claims

1. The utility model provides a flexible mineral insulation fireproof cable, includes the cable core of predetermined quantity, its characterized in that, each the cable core from interior to exterior includes copper conductor, inner insulating layer and a flame retardant coating in proper order, the cable still includes from interior to exterior in proper order the cladding be in the filling layer of cable core periphery, an outer insulating layer, an isolation layer, a ceramic silicon rubber layer, a fire-retardant layer, a flexible restrictive coating of high strength and an outer fireproof paint layer, the filling in situ is filled with fire-retardant rope of low smoke and zero halogen and high strength wire, the flexible restrictive coating of high strength intussuseption is filled with high strength wire.

2. The flexible mineral-insulated fireproof cable of claim 1, wherein the filler layer is filled with water-absorbing fibers.

3. The flexible mineral insulated fireproof cable of claim 1, wherein the filling layer is filled with heat dissipation tubes.

4. The flexible mineral insulated fireproof cable of claim 1, wherein an inner layer of fire retardant paint is disposed outside the layer of ceramic silicone rubber.