CN215954896U - Multi-core fire-resistant coaxial cable - Google Patents
Multi-core fire-resistant coaxial cable Download PDFInfo
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- CN215954896U CN215954896U CN202122406889.1U CN202122406889U CN215954896U CN 215954896 U CN215954896 U CN 215954896U CN 202122406889 U CN202122406889 U CN 202122406889U CN 215954896 U CN215954896 U CN 215954896U
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Abstract
The utility model belongs to the technical field of cables, and particularly relates to a multi-core fire-resistant coaxial cable which comprises a fire-retardant sheath and conductors, wherein a plurality of groups of conductors are arranged inside the fire-retardant sheath, a fire-retardant device is arranged inside the fire-retardant sheath, the fire-retardant device comprises a high-temperature-resistant woven layer, and the outer surface of the high-temperature-resistant woven layer is fixedly bonded on the inner wall of the fire-retardant sheath. This fire-resistant coaxial cable of multicore, through setting up extinguishing device, can be further put out a fire, when the intensity of a fire is great, be destroyed through high temperature resistant layer, make the burning of rubber buffering ball when the cushion chamber, the aerosol of gas chamber is put out a fire gas and is got into the cushion chamber through the intercommunication chamber, handle putting out a fire to rubber buffering ball and high temperature resistant layer, prevent further stretching of the intensity of a fire, reduce the injury to the conductor, thereby can put out a fire, the control intensity of a fire, through the stretching with the further reduction intensity of a fire of the cooperation of sodium bicarbonate granule.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a multi-core fire-resistant coaxial cable.
Background
Cables are made up of one or more mutually insulated conductors and an outer insulating jacket that carries power or information from one location to another.
The multi-core coaxial cable in an outer sheath layer is used in a building, when the building is in fire, the existing multi-core coaxial cable depends on an external flame-retardant sheath to conduct fire resistance and fire prevention, the fire resistance and the flame retardance are poor, fire is easily caused in the cable, the electric leakage phenomenon is caused, safety accidents are caused, the use of connecting equipment is influenced, and life cannot be protected or fire fighting work cannot be guided.
SUMMERY OF THE UTILITY MODEL
Based on the technical problems that the existing multi-core coaxial cable is fire-resistant and fireproof by means of an external flame-retardant sheath, the fire-resistant and flame-retardant performance is poor, the cable is easy to fire, the electric leakage phenomenon is caused, safety accidents are caused, the use of connecting equipment is influenced, and the life cannot be protected or the fire-fighting work cannot be guided, the utility model provides the multi-core fire-resistant coaxial cable.
The utility model provides a multi-core fire-resistant coaxial cable which comprises a fire-retardant sheath and conductors, wherein a plurality of groups of conductors are arranged inside the fire-retardant sheath, a fire-retardant device is arranged inside the fire-retardant sheath, the fire-retardant device comprises a high-temperature-resistant woven layer, and the outer surface of the high-temperature-resistant woven layer is fixedly bonded on the inner wall of the fire-retardant sheath;
the outer surface of conductor is provided with extinguishing device, extinguishing device includes the insulating cover, the fixed cover of inner wall of insulating cover is in a plurality of the surface of conductor.
Preferably, the flame retardant device further comprises a heat insulation layer, and the outer surface of the heat insulation layer is fixedly bonded to the inner wall of the high temperature resistant woven layer;
through above-mentioned technical scheme, the insulating layer is by the polyethylene material, and the influence of the temperature that can completely cut off external weather's temperature or conductor work produced to the sodium bicarbonate granule of fire-retardant intracavity, high temperature resistant weaving layer is woven by ceramic fiber and rock wool fibre are crisscross to form, have light in weight, high temperature resistant, the effect that thermal stability is good and the heat conductivity is low, can slow down the conductor under the condition of high temperature and receive the influence.
Preferably, the inside of the heat insulation layer is provided with flame-retardant cavities in an annular array, and the inner wall in each flame-retardant cavity is provided with sodium bicarbonate particles;
through above-mentioned technical scheme, the venthole has been seted up to the inner wall in fire-retardant chamber, and the venthole extends to the surface of insulating layer, when the cable conflagration breaks out, surpasss the thermal insulation coefficient of insulating layer, and the insulating layer can transmit partly temperature to fire-retardant intracavity for the sodium bicarbonate granule can react, generates carbon dioxide, discharges away through the venthole on fire-retardant chamber, discharges away when fire-retardant sheath breaks and puts out a fire and handle.
Preferably, the fire extinguishing device further comprises a high temperature resistant layer, the inner wall of the high temperature resistant layer is fixedly bonded to the outer surface of the insulating sleeve, the annular array on the upper surface of the high temperature resistant layer is fixedly connected with rubber buffer balls, a buffer cavity is formed in each rubber buffer ball, the outer surface of the high temperature resistant layer is fixedly bonded with a filling layer, and the outer surface of the filling layer is fixedly bonded to the inner wall of the heat insulating layer;
through above-mentioned technical scheme, rubber buffering ball can carry out cushioning effect, receives when the extrusion at the cable, and rubber buffering ball is compressed for the gas in the inside buffering intracavity of rubber buffering ball enters into the air cavity through the intercommunication chamber, carries out cushioning effect, can protect inside conductor.
Preferably, the inner annular array of the high temperature resistant layer is provided with air cavities, and the opposite inner side walls of two adjacent air cavities are both provided with communicating cavities;
through above-mentioned technical scheme, be provided with aerosol fire extinguishing gas in the air cavity, can be under the great condition of intensity of a fire, rubber buffer ball is destroyed by the burning after, and aerosol fire extinguishing gas can be released from the intercommunication chamber and put out a fire the effect, and aerosol gas is noncorrosive, pollution-free, nontoxic harmless and the residue is few, can regard as buffer gas to use when the extrusion simultaneously.
Preferably, a buffering positioning frame is fixedly bonded on the outer surface of the insulating sleeve, an inner sheath is fixedly mounted on the inner wall of the buffering positioning frame, and an elastic steel rope is fixedly inserted into the inner wall of the inner sheath;
through above-mentioned technical scheme, the buffering locating rack comprises soft material, can fix the position of conductor, can play the cushioning effect when the conductor receives the extrusion simultaneously, and the elasticity steel cable has increased the intensity of cable.
The beneficial effects of the utility model are as follows:
1. the flame retardant device can play a role of fire prevention, when the cable encounters a fire disaster, the temperature of the cable rises and exceeds the temperature value of the heat insulation temperature of the heat insulation layer, so that the sodium bicarbonate particles in the flame-retardant cavity are influenced by temperature and heated to generate carbon dioxide and water which can be released from the exhaust holes of the flame-retardant cavity, once the outer flame-retardant sheath is burnt to be broken, the carbon dioxide and the water can extinguish the fire, reduce the time for damaging the cable conductor, thereby facilitating the fire extinguishing and rescuing treatment of firemen, reducing property loss, solving the problems that the existing multi-core coaxial cable is fire-resistant and fireproof by an external flame-retardant sheath, has poor fire-resistant and flame-retardant performance, is easy to fire, causes electric leakage and causes safety accidents, meanwhile, the use of connecting equipment is influenced, and the life cannot be protected or the fire-fighting work cannot be guided.
2. Through setting up extinguishing device, can be further put out a fire, when the intensity of a fire is great, be destroyed through high temperature resistant layer, make rubber buffering ball burning when the cushion chamber, the aerosol of gas chamber is put out a fire gas and is got into the cushion chamber through the intercommunication chamber, the processing of putting out a fire to rubber buffering ball and high temperature resistant layer, prevent further stretching of the intensity of a fire, reduce the injury to the conductor, thereby can put out a fire, control the intensity of a fire, through stretching with the further reduction intensity of a fire of the cooperation of sodium bicarbonate granule, it relies on outside fire-resistant sheath to carry out fire prevention to have solved current multicore coaxial cable, fire-resistant flame retardant properties is poor, the easy occurrence of the cable is catching fire, cause electric leakage phenomenon, cause the incident, influence the use of jointing equipment simultaneously, the technical problem of unable protection life guide or fire control work.
Drawings
Fig. 1 is a schematic view of a multi-core fire-resistant coaxial cable according to the present invention;
fig. 2 is a perspective view of a filling layer structure of a multi-core fire-resistant coaxial cable according to the present invention;
fig. 3 is a perspective view of a sodium hydroxide structure of a multi-core fire-resistant coaxial cable according to the present invention;
fig. 4 is a perspective view of a high temperature resistant layer structure of a multi-core fire-resistant coaxial cable according to the present invention;
fig. 5 is a perspective view of a rubber buffer ball structure of a multi-core fire-resistant coaxial cable according to the present invention.
In the figure: 1. a flame retardant jacket; 11. a conductor; 2. a high temperature resistant braid layer; 21. a thermal insulation layer; 22. a flame retardant cavity; 23. sodium bicarbonate particles; 3. an insulating sleeve; 31. a high temperature resistant layer; 32. a rubber buffer ball; 33. a buffer chamber; 34. an air cavity; 35. a communicating cavity; 36. a filling layer; 4. a buffer positioning frame; 41. an inner sheath; 42. an elastic steel cord.
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.
Referring to fig. 1-5, a multi-core fire-resistant coaxial cable comprises a fire-retardant sheath 1 and conductors 11, wherein a plurality of groups of conductors 11 are arranged inside the fire-retardant sheath 1, a fire-retardant device is arranged inside the fire-retardant sheath 1, the fire-retardant device comprises a high-temperature-resistant braided layer 2, and the outer surface of the high-temperature-resistant braided layer 2 is fixedly bonded on the inner wall of the fire-retardant sheath 1;
further, the flame retardant device also comprises a heat insulation layer 21, and the outer surface of the heat insulation layer 21 is fixedly adhered to the inner wall of the high temperature resistant braid layer 2;
the heat insulation layer 21 is made of polyethylene materials and can isolate the influence of the temperature of outside weather or the temperature generated by the work of the conductor 11 on the sodium bicarbonate particles 23 in the flame-retardant cavity 22, the high-temperature-resistant braided layer 2 is formed by interweaving ceramic fibers and rock wool fibers, and the heat insulation layer has the effects of light weight, high temperature resistance, good thermal stability and low heat conductivity and can slow down the influence on the conductor 11 under the condition of high temperature.
Furthermore, flame-retardant cavities 22 are formed in the heat-insulating layer 21 in an annular array, and sodium bicarbonate particles 23 are arranged on the inner wall of each flame-retardant cavity 22;
the venthole has been seted up to fire-retardant chamber 22's inner wall, and the venthole extends to the surface of insulating layer 21, and when the cable conflagration breaks out, surpasss insulating layer 21's thermal insulation coefficient, insulating layer 21 can transmit partly temperature to fire-retardant chamber 22 in for sodium bicarbonate granule 23 can react, generates carbon dioxide, discharges through the venthole on fire-retardant chamber 22, discharges out when fire-retardant sheath 1 breaks and puts out a fire and handle.
The flame retardant device can play a role of fire prevention, when the cable encounters a fire disaster, the temperature of the cable rises and exceeds the temperature value of the heat insulation temperature of the heat insulation layer 21, so that the sodium bicarbonate particles 23 in the flame-retardant cavity 22 are affected by the temperature and heated, and the generated carbon dioxide and water vapor can be released from the exhaust holes of the flame-retardant cavity 22, and once the outer flame-retardant sheath 1 is burnt to be broken, the carbon dioxide and the water vapor can extinguish the fire, reduce the time for damaging the cable conductor 11, thereby facilitating the fire extinguishing and rescuing treatment of firemen, reducing property loss, solving the problems that the existing multi-core coaxial cable depends on the external flame-retardant sheath 1 to carry out fire resistance and fire prevention, has poor fire resistance and flame retardance, is easy to cause electric leakage phenomenon and safety accidents due to fire catching, meanwhile, the use of connecting equipment is influenced, and the life cannot be protected or the fire-fighting work cannot be guided.
The outer surfaces of the conductors 11 are provided with fire extinguishing devices, each fire extinguishing device comprises an insulating sleeve 3, and the inner walls of the insulating sleeves 3 are fixedly sleeved on the outer surfaces of the conductors 11;
furthermore, the fire extinguishing device also comprises a high temperature resistant layer 31, the inner wall of the high temperature resistant layer 31 is fixedly bonded on the outer surface of the insulating sleeve 3, the annular array on the upper surface of the high temperature resistant layer 31 is fixedly connected with rubber buffer balls 32, a buffer cavity 33 is formed inside the rubber buffer balls 32, a filling layer 36 is fixedly bonded on the outer surface of the high temperature resistant layer 31, and the outer surface of the filling layer 36 is fixedly bonded on the inner wall of the insulating layer 21;
Further, air cavities 34 are formed in the high-temperature resistant layer 31 in an annular array mode, and communicating cavities 35 are formed in the opposite inner side walls of two adjacent air cavities 34;
the aerosol fire extinguishing gas is arranged in the gas cavity 34, so that under the condition of large fire intensity, after the rubber buffer ball 32 is burnt and damaged, the aerosol fire extinguishing gas can be released from the communicating cavity 35 to perform the fire extinguishing function, and the aerosol gas is free of corrosion, pollution and toxicity, free of harm and few in residues, and can be used as the buffer gas during extrusion.
Furthermore, a buffering positioning frame 4 is fixedly bonded on the outer surface of the insulating sleeve 3, an inner sheath 41 is fixedly mounted on the inner wall of the buffering positioning frame 4, and an elastic steel rope 42 is fixedly spliced on the inner wall of the inner sheath 41;
the buffer positioning frame 4 is made of soft material, and can fix the position of the conductor 11, and simultaneously, the conductor 11 can play a buffer role when being extruded, and the elastic steel rope 42 increases the strength of the cable.
Through setting up extinguishing device, can further put out a fire, when the intensity of a fire is great, be destroyed through high temperature resistant layer 31, make rubber buffering ball 32 burn when to cushion chamber 33, aerosol fire extinguishing gas in air cavity 34 passes through intercommunication chamber 35 entering cushion chamber 33, the processing of putting out a fire to rubber buffering ball 32 and high temperature resistant layer 31, prevent further stretching of the intensity of a fire, reduce the injury to conductor 11, thereby can put out a fire, control the intensity of a fire, through the stretching with the further reduction intensity of a fire of sodium bicarbonate granule 23's cooperation, it relies on outside fire-retardant sheath 1 to carry out fire-resistant fire prevention to have solved current multicore coaxial cable, fire-resistant fire behavior is poor, the cable appears catching fire easily, cause electric leakage phenomenon, cause the incident, influence the use of connecting device simultaneously, can't protect life or guide the technical problem of fire control work.
The working principle is as follows: when a cable encounters a fire disaster, the fire-retardant sheath 1 can prolong the time of the cable catching fire, the internal heat-insulating layer 21 is heated by the temperature of the external fire disaster, sodium bicarbonate particles 23 in the fire-retardant cavity 22 are heated, the sodium bicarbonate particles 23 react to generate carbon dioxide and water, the carbon dioxide and the water are discharged to the high-temperature-resistant braid layer 2 through the exhaust holes in the fire-retardant cavity 22, after the fire-retardant sheath 1 is burnt and broken, the carbon dioxide and the water vapor are released through the broken holes to extinguish the fire on the fire-retardant sheath 1, and the fire intensity is reduced or extinguished;
if the fire cannot be completely extinguished under the control of the sodium bicarbonate particles 23, after the high-temperature-resistant layer 31 is burnt, the rubber buffer ball 32 is burnt in case of fire, so that the aerosol extinguishing gas in the air cavity 34 in the high-temperature-resistant layer 31 can be released to extinguish the fire again.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. A fire-resistant coaxial cable of multicore, includes fire-retardant sheath (1) and conductor (11), and multiunit conductor (11) set up in the inside of fire-retardant sheath (1), its characterized in that: the flame-retardant sheath (1) is internally provided with a flame-retardant device, the flame-retardant device comprises a high-temperature-resistant woven layer (2), and the outer surface of the high-temperature-resistant woven layer (2) is fixedly bonded on the inner wall of the flame-retardant sheath (1);
the outer surface of conductor (11) is provided with extinguishing device, extinguishing device includes insulating cover (3), the inner wall of insulating cover (3) is fixed cup joints a plurality of the surface of conductor (11).
2. The multi-core fire-resistant coaxial cable of claim 1, wherein: the flame retardant device further comprises a heat insulation layer (21), and the outer surface of the heat insulation layer (21) is fixedly adhered to the inner wall of the high-temperature-resistant woven layer (2).
3. The multi-core fire-resistant coaxial cable of claim 2, wherein: the inside of insulating layer (21) is the annular array and has seted up fire-retardant chamber (22), the inner wall in fire-retardant chamber (22) is provided with sodium bicarbonate granule (23).
4. The multi-core fire-resistant coaxial cable of claim 2, wherein: the fire extinguishing device is characterized by further comprising a high-temperature-resistant layer (31), wherein the inner wall of the high-temperature-resistant layer (31) is fixedly bonded to the outer surface of the insulating sleeve (3), the upper surface of the high-temperature-resistant layer (31) is fixedly connected with rubber buffer balls (32) in an annular array mode, buffer cavities (33) are formed in the rubber buffer balls (32), the outer surface of the high-temperature-resistant layer (31) is fixedly bonded with a filling layer (36), and the outer surface of the filling layer (36) is fixedly bonded to the inner wall of the insulating layer (21).
5. The multi-core fire-resistant coaxial cable of claim 4, wherein: air cavities (34) are formed in the inner annular array of the high-temperature-resistant layer (31), and communicating cavities (35) are formed in the opposite inner side walls of the two adjacent air cavities (34).
6. The multi-core fire-resistant coaxial cable of claim 1, wherein: the outer surface of the insulating sleeve (3) is fixedly bonded with a buffering positioning frame (4), the inner wall of the buffering positioning frame (4) is fixedly connected with an inner sheath (41), and an elastic steel rope (42) is fixedly inserted into the inner wall of the inner sheath (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122406889.1U CN215954896U (en) | 2021-10-08 | 2021-10-08 | Multi-core fire-resistant coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122406889.1U CN215954896U (en) | 2021-10-08 | 2021-10-08 | Multi-core fire-resistant coaxial cable |
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| Publication Number | Publication Date |
|---|---|
| CN215954896U true CN215954896U (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122406889.1U Active CN215954896U (en) | 2021-10-08 | 2021-10-08 | Multi-core fire-resistant coaxial cable |
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- 2021-10-08 CN CN202122406889.1U patent/CN215954896U/en active Active
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