CN214043186U

CN214043186U - Fire-resistant cable

Info

Publication number: CN214043186U
Application number: CN202120190320.3U
Authority: CN
Inventors: 丁丽萍; 张春友
Original assignee: Quantong Cable Ltd By Share Ltd
Current assignee: Quantong Cable Ltd By Share Ltd
Priority date: 2021-01-23
Filing date: 2021-01-23
Publication date: 2021-08-24
Anticipated expiration: 2031-01-23

Abstract

The application relates to a fire resisting cable, including insulating sinle silk and the insulating cover of first fire prevention, still include thermistor and alarm, thermistor sets up on one of them insulating sinle silk, insulating sinle silk includes stranded copper core and the insulating cover of second fire prevention, the insulating cover of second fire prevention is including thermistor and the parcel of stranded copper core, thermistor communicates with the alarm alone, the alarm is located one side that insulating sinle silk was kept away from to the insulating cover of first fire prevention, when the thermistor temperature was too high, the alarm sends the police dispatch newspaper. When the conflagration breaing out, thermistor is located insulating sinle silk inside and can not burnt, and thermistor can experience the change of cable ambient temperature simultaneously, and when the temperature exceeded the rating value that sets up in advance, thermistor's signal transmission gave the alarm, and the alarm takes place the alarm and reminds operating personnel temperature here unusual, makes operating personnel can in time handle the dangerous condition, improves the security of cable and equipment.

Description

Fire-resistant cable

Technical Field

The application relates to the field of cables, in particular to a fire-resistant cable.

Background

With the rapid development of economy, cables are widely used in power transmission, and the cables are made of one or more conductors insulated from each other and a protective insulating layer covering the conductors to transmit power or information from one place to another. At present, along with the development of society, the power consumption is increased, and the requirement on cables is higher and higher. Fire-resistant cable means a cable that can be kept in operation safely for a certain period of time in the event of a flame burn. Fire-resistant cables are widely used in places related to fire safety and fire life saving, such as high-rise buildings, underground railways, underground streets, large power stations, and important industrial and mining enterprises, for example, power supply lines and control lines of emergency facilities such as fire-fighting equipment and emergency guide lamps.

A fire-resistant cable according to the related art is shown in fig. 1, and includes a first fire-resistant insulating sheath 1, a ground wire 18, and a plurality of insulating cores 11, wherein the first fire-resistant insulating sheath 1 encloses the ground wire 18 and the plurality of insulating cores 11.

The above-mentioned related technical solutions have the following drawbacks: when fire is burning the electric wire, first fire prevention insulating cover can play certain fire prevention effect, nevertheless is longer when the time that the fire was burnt, and first fire prevention insulating cover still can appear the damage, can influence the normal work of cable when fire contacts insulating sinle silk, if the staff can not in time discover, can cause more serious consequences such as equipment short circuit.

SUMMERY OF THE UTILITY MODEL

In order to remind the operating condition of staff's cable in time, this application provides a fire resisting cable.

The application provides a fire resisting cable adopts following technical scheme:

the utility model provides a fire-resistant cable, includes insulating sinle silk and first fire prevention insulating cover, still includes thermistor and alarm, thermistor sets up on one of them insulating sinle silk, insulating sinle silk includes stranded copper core and the insulating cover of second fire prevention, including second fire prevention insulating cover wraps up thermistor and stranded copper core, thermistor alone with the alarm intercommunication, the alarm is located one side that insulating sinle silk was kept away from to first fire prevention insulating cover, when the thermistor high temperature, the alarm sends the police dispatch newspaper.

Through adopting above-mentioned technical scheme, when the conflagration breaing out, perhaps when the fire directly burns out on the cable, first fire prevention insulating cover plays the guard action to insulating sinle silk, can make insulating sinle silk not burnt by the fire in a period, because thermistor is located inside insulating sinle silk, thermistor also can not burnt in a period, thermistor can experience the change of temperature around the cable simultaneously, when the temperature surpassed operating personnel preset's rated value, thermistor's signal transmission gives the alarm, the alarm takes place the alarm and reminds operating personnel temperature here unusual, make operating personnel can in time handle dangerous situation, improve the security of cable and equipment.

Preferably, the surface of the multi-strand copper core is coated with an oxidation resistant film.

Through adopting above-mentioned technical scheme, the copper core can take place the oxidation with the air contact, and the copper core oxidation becomes unable to conduct to a certain extent, and the oxidation-resistant film can reduce the speed of copper core oxidation to increase the life of copper core.

Preferably, the cable further comprises a plurality of first metal fire-proof nets, and the first metal fire-proof nets wrap the plurality of insulating wire cores.

Through adopting above-mentioned technical scheme, first metal fire prevention net carries out direct protection to insulating sinle silk, and when external force lacerated first fire prevention insulation cover, first metal fire prevention net can prolong the time that insulating sinle silk normally worked.

Preferably, still include the fire prevention cotton, there is certain clearance between first fire prevention insulating cover and the insulation core, the gap is filled to the fire prevention cotton.

Through adopting above-mentioned technical scheme, the fireproof cotton has fire-retardant and thermal-insulated effect, and contact with the fire or be in high temperature environment and can not burn down, and the fireproof cotton can also fix the position of insulating sinle silk in the insulating cover of first fire prevention on fire-retardant basis, increases the stability of insulating sinle silk.

Preferably, still include a plurality of toughness strips, the length direction of a plurality of toughness strips is on a parallel with the length direction of insulating sinle silk, first fire prevention insulating cover is including a plurality of toughness strips and a plurality of insulating sinle silk parcel, there is certain clearance between first fire prevention insulating cover and insulating sinle silk and the toughness strip, the fire prevention is cotton with the gap filling.

Through adopting above-mentioned technical scheme, when buckling and dragging the cable, insulating core bears the effort that most were buckled or were dragged, makes insulating core fracture influence the use of cable easily, and the toughness strip can effectively increase the tensile bending strength of cable, increases the toughness of cable, and then increases the life of cable.

Preferably, the flexible strip is a steel wire rope.

Through adopting above-mentioned technical scheme, the steel wire cable has non-combustible characteristic at first, and the steel wire cable has better tensile resistance and bending nature secondly, can replace insulating sinle silk to bear the effort of buckling and pulling that some cables received, reduces insulating sinle silk cracked probability, increases the life of cable.

Preferably, the fireproof insulation cover further comprises a second metal fireproof net, and the first fireproof insulation cover is wrapped in the second metal fireproof net.

Through adopting above-mentioned technical scheme, second metal fire prevention net can also play the effect that increases cable resistance intensity when further increasing the fire behavior of cable.

Preferably, the fireproof door further comprises a third fireproof insulating sleeve, and the second metal fireproof net is wrapped in the third fireproof insulating sleeve.

Through adopting above-mentioned technical scheme, third fire prevention insulating boot has better parcel nature, can cover whole second metal fire prevention net surface, increases cable surface's feeling, can further increase the fire behavior of cable simultaneously.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the thermistor and the alarm, when the temperature exceeds a rated value preset by an operator, a signal of the thermistor is transmitted to the alarm, and the alarm gives an alarm to remind the operator of temperature abnormality at the position, so that the operator can timely handle dangerous conditions;

2. the fireproof cotton has the functions of flame retardance and heat insulation, and can also fix the position of the insulated wire core in the first fireproof insulating sleeve on the basis of flame retardance, so that the stability of the insulated wire core is improved;

3. through setting up the wire cable, the wire cable has incombustible characteristic, and secondly the wire cable has better tensile resistance and bending nature, can replace insulating sinle silk to bear the effort when buckling and dragging that some cables received, increases the life of cable.

Drawings

Fig. 1 is an overall structural diagram of the related art.

Fig. 2 is a schematic overall structure diagram of an embodiment of the present application.

Description of reference numerals: 1. a first fireproof insulating sleeve; 11. an insulated wire core; 111. a copper core; 112. a second fireproof insulating sleeve; 113. a first metal fire-resistant mesh; 12. a thermistor; 13. an alarm; 14. fireproof cotton; 15. a second metal fire-resistant mesh; 16. a third fire prevention insulating sleeve; 17. a wire rope; 18. a ground line; 19. and a third metal fireproof net.

Detailed Description

The present application is described in further detail below with reference to fig. 2.

The embodiment of the application discloses a fire-resistant cable.

Referring to fig. 2, the fire-resistant cable of this embodiment includes a filler, a first fire-proof insulating sleeve 1, a ground wire 18, a flexible strip and two insulating wire cores 11, a channel with two ends connected to each other is formed in the first fire-proof insulating sleeve 1, the flexible strip is a steel wire rope 17, the ground wire 18, the steel wire rope 17 and the two insulating wire cores 11 are all located in the channel, the length directions of the ground wire 18, the steel wire rope 17 and the two insulating wire cores 11 are all parallel to the length direction of the first fire-proof insulating sleeve 1, the first fire-proof insulating sleeve 1 wraps the ground wire 18, the steel wire rope 17 and the two insulating wire cores 11, a gap exists in the channel, and the filler is used for filling the gap in the channel.

Referring to fig. 2, the insulated wire core 11 includes a first metal fireproof mesh 113, a second fireproof insulating sleeve 112 and a multi-strand copper core 111, firstly, an antioxidant coating, such as a copper wire antioxidant RY-206, is coated on the multi-strand copper core 111, and after the insulated wire core is used, an antioxidant film is formed on the surface of the copper core 111 to isolate the copper core from air, so that the effects of reducing discoloration and oxidation blackening of the copper core 111 can be achieved, and the service life of the copper core 111 can be prolonged. The length directions of the multi-strand copper cores 111 are arranged in parallel, and the second fireproof insulating sleeve 112 wraps the multi-strand copper cores 111 inside. First metal fire prevention net 113 is cylindric setting around rolling up, and including first metal fire prevention net 113 wraps up second fire prevention insulating cover 112, the inner wall of first metal fire prevention net 113 and the outer wall of second fire prevention insulating cover 112 closely laminate.

Referring to fig. 2, the ground wire 18 may be a relatively common two-color ground wire 18, which mainly plays a role of preventing electric leakage, and a third metal fireproof net 19 is wrapped on the outer side wall of the ground wire 18, and the third metal fireproof net 19 plays a role of preventing fire and protecting the ground wire 18.

Referring to fig. 2, a thermistor 12 is arranged on one of the insulated wire cores 11, the second fireproof insulating sleeve 112 wraps the thermistor 12 and the multi-strand copper core 111, the thermistor 12 is located at the end of the cable, two pins of the thermistor 12 are communicated with wires, the thermistor 12 is connected with an alarm 13 through the wires, the alarm 13 is located outside the cable, and an operator fixes the alarm 13 on an external bracket or a wall. When the cable meets fire, the temperature of the cable is increased due to fire burning, the resistance value of the thermistor 12 can be changed along with the temperature change, and when the resistance value changes to exceed the rated value range, the alarm 13 detects the resistance value change and immediately sends out an alarm through the alarm 13.

Referring to fig. 2, the filler is fireproof cotton 14, and fireproof cotton 14 can also play the effect of fixed many wire cables 17 and many insulation core 11 under the fire-retardant prerequisite of preventing fires, makes the cable more round simultaneously, improves the roundness of cable to reduce the friction between wire cable 17 and the insulation core 11, increase the life of cable. The steel wires 17 are uniformly distributed in the filler, firstly the steel wires 17 have non-flammable characteristics, secondly the steel wires 17 have better tensile resistance and bending property, and can replace the insulating wire core 11 to bear the action force of bending and pulling on a part of cables, reduce the probability of breakage of the insulating wire core 11 and prolong the service life of the cables.

Referring to fig. 2, the fire-resistant cable further includes a second metal fire-proof mesh 15 and a third fire-proof insulating sleeve 16, the second metal fire-proof mesh 15 wrapping the first fire-proof insulating sleeve 1, and the third fire-proof insulating sleeve 16 wrapping the second metal fire-proof mesh 15.

The fire-resistant cable of the embodiment of the application has the following implementation principle: when the cable meets fire, be located the third fire prevention insulating cover 16 of cable surface, second metal fire prevention net 15 and first fire prevention insulating cover 1 can prevent in proper order that fire from burning to the inside insulating sinle silk 11 of cable, simultaneously fire prevention cotton 14 has fire-retardant and thermal-insulated effect, can make insulating sinle silk 11 not burnt by fire in a period, thermistor 12 can experience the change of cable ambient temperature simultaneously, when the temperature surpassed the rated value that operating personnel set up in advance, thermistor 12's signal transmission gives alarm 13, alarm 13 takes place the police dispatch newspaper and reminds operating personnel temperature here unusual, make operating personnel can in time handle the dangerous condition, improve the security of cable and equipment.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A fire-resistant cable, includes insulating sinle silk (11) and first fire prevention insulating cover (1), its characterized in that: still include thermistor (12) and alarm (13), thermistor (12) set up on one of them insulating sinle silk (11), insulating sinle silk (11) include stranded copper core (111) and second fire prevention insulating cover (112), including second fire prevention insulating cover (112) wrap up thermistor (12) and stranded copper core (111), thermistor (12) communicate with alarm (13) alone, alarm (13) are located one side that insulating sinle silk (11) were kept away from in first fire prevention insulating cover (1), when thermistor (12) high temperature, alarm (13) send out the police dispatch newspaper.

2. The fire resistant cable of claim 1, wherein: the surface of the multi-strand copper core (111) is coated with an oxidation resistant film.

3. The fire resistant cable of claim 1, wherein: the fireproof insulation cable is characterized by further comprising a plurality of first metal fireproof nets (113), wherein the first metal fireproof nets (113) wrap the plurality of insulation cable cores (11).

4. The fire resistant cable of claim 1, wherein: still include fireproof cotton (14), there is certain clearance between first fireproof insulation cover (1) and insulating sinle silk (11), fireproof cotton (14) are with the clearance packing.

5. The fire resistant cable of claim 4, wherein: still include a plurality of toughness strips, the length direction of a plurality of toughness strips is on a parallel with the length direction of insulating sinle silk (11), including first fire prevention insulating cover (1) wraps up a plurality of toughness strips and a plurality of insulating sinle silk (11), there is certain clearance between first fire prevention insulating cover (1) and insulating sinle silk (11) and the toughness strip, fire prevention cotton (14) are with the clearance packing.

6. The fire resistant cable of claim 5, wherein: the flexible strip is a steel wire rope (17).

7. The fire resistant cable of claim 1, wherein: the fireproof insulation sleeve also comprises a second metal fireproof net (15), and the first fireproof insulation sleeve (1) is wrapped in the second metal fireproof net (15).

8. The fire resistant cable of claim 7, wherein: still include insulating cover of third fire prevention (16), the insulating cover of third fire prevention (16) is including parcel second metal fire prevention net (15).