CN212032734U

CN212032734U - Flexible heat-insulation fireproof cable

Info

Publication number: CN212032734U
Application number: CN202020830415.2U
Authority: CN
Inventors: 王占民; 梁明春
Original assignee: Guangdong Tianhong Cable Co ltd
Current assignee: Guangdong Tianhong Cable Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-11-27
Anticipated expiration: 2030-05-18

Abstract

The utility model provides a flexible thermal-insulated fireproof cable, including predetermined quantity's cable core, each all be provided with the copper conductor in the cable core, the copper conductor wraps an insulating layer and a flame retardant coating outward in proper order, each the cable core separates the setting each other through a flexible support, each the cable core with the clearance of flexible support is filled there is high temperature resistant mineral substance rope, the support intussuseption is filled with the cooling tube, flexible support has set gradually a first pottery porcelain silica gel layer, a mineral substance insulating layer, a high strength wire weaving layer, a flame retardant coating, a second pottery silica gel layer outward to and a first fire prevention paint layer, pottery silica gel layer with fire prevention paint layer cross-section external diameter is the wave. The flexible heat-insulation fireproof cable can maintain stable and smooth signal transmission in a long time under the conditions of high temperature and fire, and has high safety, excellent tensile and compressive resistance and strength and long service life.

Description

Flexible heat-insulation fireproof cable

Technical Field

The utility model relates to a wire and cable technical field especially relates to a flexible thermal-insulated 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, long service life and capable of maintaining smooth and stable signal transmission for a certain 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 thermal-insulated fireproof cable, including predetermined quantity's cable core, each all be provided with the copper conductor in the cable core, the copper conductor wraps an insulating layer and a flame retardant coating outward in proper order, each the cable core separates the setting each other through a flexible support, each the cable core with the clearance of flexible support is filled with high temperature resistant mineral substance rope, the support intussuseption is filled with the cooling tube, flexible support has set gradually a first ceramization silastic layer, a mineral substance insulating layer, a high strength wire weaving layer, a flame retardant coating, a second ceramistic silastic layer outward to and a first fire prevention paint sprayer, ceramized silastic layer with fire prevention paint sprayer cross-section external diameter is the wave.

Further preferably, a central tube is arranged in the center of the flexible support, water-absorbing fibers are filled in the central tube, and a predetermined number of tube holes are formed in the central tube.

Further preferably, two ends of the bracket are respectively connected with the first silicon ceramic rubber layer and the central tube.

More preferably, the pore diameter of the pore is 0.5-2 mm.

Further preferably, the periphery of the central pipe, the periphery of the flexible support and two sides of the partition plate are respectively provided with a second fireproof paint spraying layer.

Further preferably, a water-absorbent resin layer is arranged between the high-strength metal wire braid and the fire-resistant layer.

Preferably, a wear-resistant layer is arranged on one side, far away from the second ceramic silicone rubber layer, of the first fireproof paint spraying layer.

The utility model discloses following beneficial effect has: the utility model provides a flexible thermal-insulated fireproof cable also 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, multiple fireproof cable has good shielding effect and the effect of absorbing water fast, and tensile and wear resistance can be good, long service life.

The fireproof layer, the flexible support, each high temperature resistant mineral rope, the first ceramic silicon rubber layer, the mineral insulating layer, the fireproof layer, the second ceramic silicon rubber layer, the first fireproof paint spraying layer and the second fireproof paint spraying layer are mutually matched, so that the high temperature resistant, fireproof and flame retardant performances of the cable are improved, the copper conductor can be protected layer by layer under the condition of high temperature fire, and the cable can realize stable signal transmission under the condition of high temperature fire. The high-strength metal braided layer and the fire-resistant layer improve the tensile and compressive strength and flexibility of the cable, and are matched with the wear-resistant layer to improve the overall mechanical strength of the cable. The flexible support is matched with the insulating layer to effectively prevent mutual interference or external interference of the cable cores, and in addition, the fireproof layer page has the functions of insulation and safety protection, so that electric leakage is effectively avoided, and the safety performance and the cable stability are improved. The radiating pipe and the high-temperature-resistant mineral substance endow the cable with high-temperature-resistant performance and excellent radiating performance, and the situation that the cable is ignited or burnt through by overhigh temperature or internal heat in the cable to cause fire is prevented. The water-absorbing resin layer is matched with the water-absorbing fibers filled in the central tube, so that permeated water can be quickly pumped away and transferred, dryness of all layers in the cable is kept, overheating of the cable caused by accelerated aging of the water-absorbing resin layer is avoided, and the service life is shortened

Drawings

Fig. 1 is the utility model provides a multiple 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 heat-insulation fireproof cable is provided, which includes a predetermined number of cable cores, each cable core is provided with a copper conductor 1, the copper conductor 1 is sequentially covered with an insulating layer 2 and a fireproof layer 3, the insulating layer 2 is made of mica tape, each cable core is separated from each other by a flexible support 4, the flexible support 4 is an aluminum metal support, a high-temperature-resistant mineral rope 5 is filled between each cable core and the flexible support 4, the flexible support 4 is filled with a radiating pipe 6, the flexible support 4 is sequentially provided with a first ceramic silicone rubber layer 7, a mineral heat-insulation layer 8, a high-strength metal wire braid layer 9, a fireproof layer 10, a second ceramic silicone rubber layer 11, a first fireproof paint-spraying layer 12 and a wear-resistant layer 13, the second ceramic silicone rubber layer 11, the first fireproof paint-spraying layer 12 and the wear-resistant layer 13 have wavy cross-sectional outer diameters, when the flexible heat-insulation fireproof cable is pulled or mechanically pressed from the outside, the wavy structure can play a role in slow release and rebound, and the tensile property and the compressive property of the flexible heat-insulation fireproof cable are improved.

The flexible support 4 is characterized in that a central tube 14 is arranged in the center, water-absorbing fibers are filled in the central tube 14, a predetermined number of tube holes are formed in the central tube 14, and the aperture of each tube hole is 0.5-2 mm. The two ends of the flexible support 4 are respectively connected with the first silicon ceramic rubber layer 7 and the central tube 14. And a second fireproof paint spraying layer 16 is arranged on the periphery of the central pipe 14 and the periphery of the flexible support 4. A water-absorbing resin layer 15 is arranged between the high-strength metal wire braid layer 9 and the fire-resistant layer 10. The water absorption fibers filled in the central tube 14 are matched with the water absorption resin layer 15, so that permeated water can be quickly pumped away and transferred, the dryness of each layer in the cable is kept, the phenomenon that the cable is overheated due to the fact that the water accelerates the aging of the rubber layer is avoided, and the service life is shortened.

The flexible support 4 separates each cable core separately and sets up, can play good shielding effect, and each copper conductor 1 is provided with outward insulating layer 2, flexible support 4 with insulating layer 2 cooperation can effectively avoid each cable core mutual interference or receive external disturbance, influence signal transmission stability, and aluminium system support can absorb a large amount of heat energy (the melting temperature of aluminium is 660 ℃, the melting heat reaches 11670J/mol) when high temperature oxidation simultaneously, and the formation aluminium trioxide becomes the barrier of heat-insulating effect, and thermal-insulated effect is obvious, can slow down the fire source and strike, makes insulating layer 2 heated temperature decline, improves that the mica tape is made insulating stability of insulating layer 2, and then improves the stability of flexible thermal-insulated fireproof cable.

The high-temperature-resistant mineral rope 5 filled in the gap between each cable core and the flexible support 4 is a rock wool rope, the high-temperature-resistant mineral rope 5 is made of natural rock, can resist high temperature of hundreds or even thousands of degrees centigrade, has excellent heat insulation and high temperature resistance, belongs to inorganic silicate fiber and cannot be combusted. The high-temperature-resistant mineral rope 5 is tightly filled in the gap between each cable core and the flexible support 4, so that no gap is left between the cable cores to the maximum extent, the contact surface between air and the cable cores is reduced, and the effects of oxygen isolation and flame retardance are achieved.

First pottery silica gel layer 7 with second pottery silica gel layer 11 is made by pottery silica gel, pottery silica gel has characteristics such as splendid fire prevention, fire-retardant, low cigarette, nontoxic, and extrusion moulding simple process, its burning back residue is hard pottery shell, and the crust does not melt and does not drip in fire environment, can smoothly play firm guard action to power transmission under the conflagration condition, first pottery silica gel layer 7 with second pottery silica gel layer 11 plays dual thermal-insulated, flame retardant action to the cable, second pottery silica gel layer 11 is equipped with outward first fire prevention paint spraying layer 12 further strengthens fireproof effect. The high-strength metal wire braided layer 9 has high mechanical strength and can improve the overall strength of the cable, so that the tensile strength and the compressive strength of the cable are improved, and the service life of the cable is prolonged. The fire-resistant layer 10 can be a high-flame-retardant glass fiber fire-resistant layer 10, and has the advantages of good insulation, strong heat resistance, good corrosion resistance, high mechanical strength, high tensile strength and excellent electrical insulation, so that the tensile strength, the compressive strength, the heat resistance and the insulation of the cable are further improved, and the stability of the cable is increased. The wear-resistant layer 13 can improve the wear resistance of the cable and avoid damage to the cable caused by friction or biting of animals.

The flame retardant coating flexible support 4, each high temperature resistant mineral substance rope 5 first pottery silica gel layer 7, mineral substance insulating layer 8 flame retardant coating 10 second pottery silica gel layer 11 first fire prevention paint spraying layer 12 reaches second fire prevention paint spraying layer 16 mutually supports each other, has improved cable high temperature resistant, fire prevention fire behaviour, can give under the high temperature fire condition 1 protection layer upon layer of copper conductor makes the cable also can realize stable signal transmission under the high temperature fire 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 fire can in time launch the rescue. The high-strength metal braided layer and the fire-resistant layer 10 improve the tensile strength and the compressive strength and the flexibility of the cable, and are matched with the wear-resistant layer 13, so that the overall mechanical strength of the cable is improved. The flexible support 4 is matched with the insulating layer 2 to effectively prevent mutual interference or external interference of the cable cores, and in addition, the flame retardant coating 10 also has the functions of insulation and safety protection, so that electric leakage is effectively avoided, and the safety performance and the cable stability are improved. The radiating pipe 6 and the high-temperature-resistant mineral rope 5 endow the cable with high-temperature resistance and excellent radiating performance, and prevent the cable from being ignited or burnt through due to overhigh temperature or internal heat in the cable to cause fire. The 15 grades of resin that absorbs water layer and the fibrous cooperation that absorbs water of packing in the center tube 14 can take away the moisture of infiltration fast and shift, keeps the drying of each layer in the cable, avoids moisture to lead to the cable overheated with ageing of rubber layer with higher speed, and life subtracts the weak point.

The flexible heat-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 flexible heat-insulation fireproof cable comprises cable cores in a preset number and is characterized in that copper conductors are arranged in each cable core, an insulation layer and a fireproof layer are sequentially wrapped outside each copper conductor, each cable core is arranged by being separated from one another through a flexible support, high-temperature-resistant mineral ropes are filled between gaps of each cable core and the flexible support, radiating tubes are filled in the supports, a first ceramic silicon rubber layer, a mineral substance heat-insulation layer, a high-strength metal wire weaving layer, a fireproof layer, a second ceramic silicon rubber layer and a first fireproof paint spraying layer are sequentially arranged outside the flexible support, and the cross section outer diameters of the ceramic silicon rubber layer and the fireproof paint spraying layer are wavy.

2. The flexible insulated fireproof cable of claim 1, wherein the flexible support is provided with a central tube at the center, the central tube is filled with water-absorbing fibers, and the central tube is provided with a predetermined number of tube holes.

3. The flexible insulated fireproof cable of claim 2, wherein the bracket is connected at both ends to the first layer of ceramicized silicone rubber and the center tube, respectively.

4. The flexible heat-insulating fireproof cable of claim 2, wherein the pore diameter of the pore is 0.5-2 mm.

5. The flexible insulated fireproof cable of claim 2, wherein the outer circumference of the center tube and the outer circumference of the flexible support are provided with a second layer of fireproof paint.

6. The flexible insulated fireproof cable of any one of claims 1 to 5, wherein a water-absorbent resin layer is disposed between the high-strength wire braid and the fire-resistant layer.

7. The flexible insulated fireproof cable of claim 1, wherein the side of the first fireproof paint layer away from the second ceramic silicone rubber layer is provided with a wear layer, and the outer diameter of the cross section of the wear layer is wavy.