CN214796816U - Fire control is with insulating fire resisting cable of flexible mineral - Google Patents

Abstract

The application relates to a fire-fighting flexible mineral insulation fire-resistant cable, which relates to the field of special cables and comprises a conductor, an insulating layer, an isolation layer, an armor layer and an outer protection layer, wherein the insulating layer is coated outside the conductor and forms a wire core with the conductor; armor sets up the armor area that the heliciform coiled, and the armor area is including all following outer convex part, straight portion and the outer portion of rolling over that its length direction set up, and when the armor area was the heliciform and coiled, the concave side of the outer convex part of outer portion of the embedding of outer portion of rolling over. This application has and to pass through the outer convex part straining on outer folding portion, also makes the armor wholly possess stronger leakproofness, can play effectual sealed water-proof effects in the fire scene, and the invasion of outside water when can effectively dealing with the fire control and putting out a fire has improved the effect of the security of this application.

Description

Fire control is with insulating fire resisting cable of flexible mineral

Technical Field

The application relates to the field of special cables, in particular to a flexible mineral insulation fire-resistant cable for fire protection.

Background

With the rapid increase of urban population, high-rise buildings, large supermarkets, hospitals, subways, tunnels, airports, public entertainment places and public transportation facilities are also increasing, and the importance of fire safety is highlighted. Particularly, under the condition of fire, the smoothness of electric power and communication lines is guaranteed within a certain time, precious time is won to the maximum extent, casualties of personnel and loss of lives and properties are reduced, the fire-fighting cable plays a role in playing a great role, high requirements are put forward on the technology of the fire-resistant cable for fire prevention, and the reasonability of cable laying is also related to the smooth operation of the whole fire-fighting system.

The related art is a Chinese patent with application number CN202011439178.8, which provides a fireproof cable for fire safety, comprising a flame-retardant sheath, an insulating layer, a conductor, a fireproof layer, a belting layer and fireproof fillers, wherein the flame-retardant sheath is provided with the belting layer, three strands of conductors are arranged in the belting layer, the outer surface of each conductor is provided with the fireproof layer, the outer surface of the fireproof layer is provided with the insulating layer, the fireproof fillers are filled in a gap between the insulating layer and the belting layer, the flame-retardant sheath is a low-smoke halogen-free flame-retardant sheath, and the insulating layer is made of crosslinked polyethylene; the fire-resistant layer is formed by lapping and wrapping double-sided synthetic mica tapes; the wrapping layer is made of alkali-free glass fiber tape; the fireproof filler is made of alkali-free glass fiber ropes.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: generally for the resistance to compression and the shock resistance that improve the cable, can set up the armor in the cable, the armor has several kinds of steel wire armoring, steel tape armoring, wherein with the leakproofness preferred of steel tape armoring again, can be adapted to the sealed of requirement under the fire scene, waterproof performance, but conventional interlocking steel tape armoring dress takes place to take place to disjunction easily between the adjacent two helicis partial at the cable back of buckling between the steel tape, and then loses protection and the sealed effect to inside cable core.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the fire control cable loses the leakproofness to the cable core when buckling easily, this application provides a fire control is with flexible mineral insulation fire resisting cable.

The application provides a flexible mineral insulation fire resisting cable for fire control adopts following technical scheme:

a fire-fighting flexible mineral insulation fire-resistant cable comprises a conductor, an insulation layer, an isolation layer, an armor layer and an outer protection layer, wherein the insulation layer covers the conductor and forms wire cores with the conductor; the armor sets up the armor area that coils into the heliciform, the armor area is including all following outer convex part, straight portion and the outer portion of turning over that its length direction set up, works as when the armor area is the heliciform and coils, outer portion embedding of turning over the concave side of outer convex part.

Through adopting above-mentioned technical scheme, when this application in use takes place to buckle, the outer convex part lock in armor area is in outer folding portion, can effectively prevent slippage between two adjacent armor areas that spiral coiled, can provide stronger tensile and anti bending property for this application on the one hand, outer convex part straining is in outer folding portion simultaneously, also make the armor wholly possess stronger leakproofness, can play effectual sealed water-proof effects in the fire scene, the invasion of outside water when can effectively coping with the fire control and put out a fire, the security of this application has been improved.

Optionally, the insulating layer is formed by extruding or wrapping ceramic silicon rubber.

By adopting the technical scheme, the insulating layer made of the ceramic silicon rubber shows the performance of the silicon rubber at normal temperature, and has the advantages of stronger insulativity, ageing resistance, acid and alkali resistance, high softness and the like; under the condition of combustion, the silicon rubber molecular structure is changed into inorganic mineral materials such as silicon oxide, calcium oxide, magnesium oxide and the like through ceramic, so that the insulating layer forms a hard ceramic protective layer, flame isolation and fire prevention are achieved, the insulating capability of the insulating layer is not affected by the state change of the insulating layer, and smoothness of electric power and communication is guaranteed under the condition of fire.

Optionally, the isolation layer is formed by wrapping or filling mineral materials.

Through adopting above-mentioned technical scheme, the isolation layer that mineral class material was made, the cladding is outside insulating layer or cladding in a plurality of sinle silks outside jointly, can effectively slow down the heat of outside to the conductor transmission, has promoted the fire resistance of this application.

Optionally, the armor belt is a copper belt, a stainless steel belt or an aluminum alloy belt.

By adopting the technical scheme, the armor layer made of the copper strip, the stainless steel strip or the aluminum alloy strip not only can play an effective protection performance for the wire core, but also can play an effective shielding effect, and the anti-electromagnetic interference performance of the cable core is ensured.

Optionally, the conductor is a stranded wire.

Through adopting above-mentioned technical scheme, the conductor forms by the wire transposition can improve the bending property of conductor, also can improve the tensile strength of conductor simultaneously to the wire of transposition can carry out rational arrangement to the wire, can effectively reduce the cable size, makes the cable more round.

Optionally, the plurality of wire cores are arranged in a straight line or twisted with each other.

Through adopting above-mentioned technical scheme, after a plurality of sinle silks transposition, can improve the bending property and the tensile strength of this application to can also reduce the size of this application, the circularity is higher.

Optionally, a sealing strip is arranged at an included angle between the straight portion and the folded portion, and the sealing strip is spirally wound in the same direction as the armor strip.

Through adopting above-mentioned technical scheme, when the armor took the heliciform coiling, the sealing strip can effectively block up the gap between the outer convex part on folded portion and the adjacent armor area, has improved the holistic waterproof sealing performance of armor to along with the bending of this application, the sealing strip is better by being supported tightly between outer convex part and the outer folded portion on two sections adjacent armor areas, and sealing performance is better.

Optionally, the sealing strip is made of ceramic silicone rubber.

By adopting the technical scheme, under a normal working state, the sealing strip provides sealing performance between the outward convex part and the outward folded part on the two adjacent armor belts; after encountering open fire, the sealing strip is heated and ceramized, and the outer convex part and the outer folded part on two adjacent armor belts are adhered and reinforced, so that the integral structural strength and the sealing property of the armor layer are better, and the good electric conduction or transmission performance can still be kept when the armor layer catches fire after being exposed to water or is impacted externally.

Optionally, a flexible strip is arranged at an included angle between the straight portion and the outer convex portion, and when the armor tape is spirally wound, the flexible strip fills a gap between two adjacent outer convex portions.

By adopting the technical scheme, on one hand, the flexible strip can fill the gap between the two outer convex parts on the two adjacent sections of armor tapes, so that the sealing performance of the armor layer is improved; meanwhile, the buffer can play an effective role in buffering external impact; and the better smoothness of armor and the combined layer periphery wall of flexible strip, better do benefit to the processing of outer jacket, reduced the quantity of outer jacket, reduced the processing degree of difficulty of this application, effectively controlled manufacturing cost.

Optionally, the flexible strip is made of ceramic silicone rubber.

By adopting the technical scheme, under a normal working state, the flexible strip provides sealing performance between two outer convex parts on two adjacent armor belts; when exposed fire occurs, the flexible strip is heated and ceramized, and two outer convex parts on two adjacent armor belts are adhered and reinforced, so that the integral structural strength and the sealing performance of the armor layer are better, and the good electric conduction or transmission performance can be still kept when the armor layer catches fire after being exposed to water or external impact under extreme conditions.

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

1. the outer convex parts of the armor belts are buckled on the outer folding parts, so that the two spirally wound armor belts can be effectively prevented from slipping off, on one hand, the armor belts can provide strong tensile and bending resistance for the application, and meanwhile, the outer convex parts are buckled on the outer folding parts, so that the whole armor layer has strong sealing performance, an effective sealing and waterproof effect can be achieved in a fire scene, the invasion of external water during fire fighting can be effectively responded, and the safety of the application is improved;

2. under the normal working state, the sealing strip provides sealing performance between the outer convex part and the outer folding part on two adjacent armor belts; after exposed fire, the sealing strip is heated and ceramized, and the outer convex parts and the outer folded parts on two adjacent armor strips are adhered and reinforced, so that the integral structural strength and the sealing property of the armor layer are better, and the good electric conduction or transmission performance can be still kept when the armor layer is exposed to water or is impacted by the outside after being ignited under extreme conditions;

3. under the normal working state, the flexible strip provides sealing performance between two outer convex parts on two adjacent armor belts; when exposed fire occurs, the flexible strip is heated and ceramized, and two outer convex parts on two adjacent armor belts are adhered and reinforced, so that the integral structural strength and the sealing performance of the armor layer are better, and the good electric conduction or transmission performance can be still kept when the armor layer catches fire after being exposed to water or external impact under extreme conditions.

Drawings

FIG. 1 is a cross-sectional view of the entire structure of embodiment 1 of the present application;

FIG. 2 is a longitudinal sectional view of the entire structure of embodiment 1 of the present application;

FIG. 3 is a longitudinal sectional view of the whole structure of embodiment 2 of the present application;

FIG. 4 is a longitudinal sectional view of the whole structure of embodiment 3 of the present application;

fig. 5 is a longitudinal sectional view of the entire structure of embodiment 4 of the present application.

Reference numerals: 1. a conductor; 2. an insulating layer; 3. an isolation layer; 4. an armor layer; 41. an outer convex portion; 42. a straight portion; 43. an outer fold portion; 5. an outer jacket; 6. a sealing strip; 7. a flexible strip; 8. and (6) reinforcing the core.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Example 1

The embodiment of the application discloses fire control is with insulating fire resisting cable of flexible mineral. Referring to fig. 1 and 2, fire control is with flexible mineral insulation fire resisting cable including the conductor 1 that sets gradually, insulating layer 2, the isolation layer 3, armor 4 and outer jacket 5, insulating layer 2 cladding outside conductor 1 and constitute the sinle silk with conductor 1, the sinle silk is provided with a plurality ofly, a plurality of sinle silks have outer common cladding or the outer cladding of sinle silk has isolation layer 3, isolation layer 3 has armor 4 and outer jacket 5 outer or the outer cladding of a plurality of isolation layer 3 outward in proper order, the common cladding of isolation layer 3 in this application embodiment is outside a plurality of sinle silks, and it has the filling layer to fill between isolation layer 3 and the insulating layer 2, the filling layer can be for twine etc. can increase sinle silk tensile strength's strip, also can be for talc etc. improve the material of the degree of lubrication between a plurality of sinle silks and improve this application fire resistance. The outer protective layer 5 can be made of halogen-free low-smoke materials or halogen-free low-smoke flame-retardant polyolefin materials.

The conductor 1 is a stranded conductor, specifically, the conductor 1 may be formed by stranding a plurality of copper wires or aluminum wires, and in other embodiments, the conductor may not be stranded directly; the multiple wire cores are arranged in a straight line or are mutually twisted, and in different embodiments, the multiple wire cores can be arranged in a straight line or can be twisted again. The stranded conductor and the stranded wire core can obviously improve the bending property and the tensile strength of the cable, and can also reduce the size of the cable, and the roundness is higher.

The insulating layer 2 is formed by extruding or wrapping ceramic silicon rubber, the isolating layer 3 is formed by wrapping or filling a mineral material, specifically, the isolating layer 3 can be made in a filling mode, the filling material is one or more of magnesium oxide, silicon nitride, silicon oxide, aluminum oxide, beryllium oxide, hexagonal boron nitride and talcum powder, but the mass fraction of the magnesium oxide is more than or equal to 99%; the insulating layer 2 can also be made in a wrapping mode, and the wrapping tape is made of high-temperature-resistant glass fiber cloth.

Under the condition of combustion, the silicon rubber molecular structure in the insulating layer 2 is changed into inorganic mineral materials such as silicon oxide, calcium oxide, magnesium oxide and the like in a ceramic mode, so that the insulating layer 2 forms a hard ceramic protective layer, flame isolation and fire prevention are achieved, the insulating capability of the insulating layer 2 is not affected by the state change of the insulating layer, and smoothness of electric power and communication is guaranteed under the fire disaster condition. Simultaneously, the isolating layer 3 made of mineral materials is coated outside the insulating layer 2 or coated outside a plurality of wire cores together, so that heat transferred from the outside to the conductor 1 can be effectively reduced, and the fire resistance of the cable is improved.

Referring to fig. 1 and 2, the armor layer 4 is provided as a spirally wound armor tape including an outward convex portion 41, a straight portion 42, and an outward bent portion 43 all provided along a length direction thereof, the outward bent portion 43 being embedded in an inward concave side of the outward convex portion 41 when the armor tape is spirally wound; the armor belt is a copper belt, a stainless steel belt or an aluminum alloy belt.

This application in use takes place when buckling, the outer convex part 41 lock in armor area is on outer folding portion 43, can effectively prevent slippage between two adjacent armor area that spiral coiled, can provide stronger tensile and anti buckling performance for this application on the one hand, the 41 straining of outer convex part is on outer folding portion 43 simultaneously, also make armor 4 wholly possess stronger leakproofness, can play effectual sealed water-proof effects in the fire scene, the invasion of outside water when can effectively handling the fire control and put out a fire, the security of this application has been improved.

The implementation principle of the flexible mineral insulation fire-resistant cable for fire protection in the embodiment of the application is as follows: this application in use takes place when buckling, the outer convex part 41 lock in armor area is on outer folding portion 43, can effectively prevent slippage between two adjacent armor area that spiral coiled, can provide stronger tensile and anti buckling performance for this application on the one hand, the 41 straining of outer convex part is on outer folding portion 43 simultaneously, also make armor 4 wholly possess stronger leakproofness, can play effectual sealed water-proof effects in the fire scene, the invasion of outside water when can effectively handling the fire control and put out a fire, the security of this application has been improved.

Example 2

The embodiment of the application discloses fire control is with insulating fire resisting cable of flexible mineral. Referring to fig. 3, the difference from embodiment 1 is that: the included angle department of straight portion 42 and inflection portion 43 is provided with sealing strip 6, and sealing strip 6 forms for taking syntropy spiral winding with the armor, and sealing strip 6 is made for ceramic silicon rubber, and during actual processing, sealing strip 6 can take together spiral winding along with the armor, also can glue sealing strip 6 on the armor in advance, and the homoenergetic reaches the convenient effect of processing.

Under the normal working state, the sealing strip 6 provides sealing performance between the outward convex part 41 and the outward folded part 43 on two adjacent armor belts; after exposed fire, the sealing strip 6 is heated and ceramic-processed, and the outer convex part 41 and the outer folded part 43 on two adjacent armor belts are adhered and reinforced, so that the integral structural strength and the sealing performance of the armor layer 4 are better, and the good electric conduction or transmission performance can be still kept when the armor belt is exposed to water or external impact after being fired under extreme conditions.

Example 3

The embodiment of the application discloses fire control is with insulating fire resisting cable of flexible mineral. Referring to fig. 4, the difference from embodiment 1 is that: straight portion 42 is provided with flexible strip 7 with the contained angle department of outer convex part 41, and when the armor area was the heliciform and coiled, flexible strip 7 filled the gap between two adjacent outer convex parts 41, and the cross section of flexible strip 7 and the gap adaptation between two adjacent outer convex parts 41, and flexible strip 7 is made for ceramic silicon rubber.

In a normal working state, the flexible strip 7 provides sealing performance between two outer convex parts 41 on two adjacent armor belts; after encountering open fire, the flexible strip 7 is heated and ceramized, and the two outer convex parts 41 on the two adjacent armor belts are adhered and reinforced, so that the integral structural strength and the sealing property of the armor layer 4 are better, and the good electric conduction or transmission performance can still be kept when the armor layer catches fire after being exposed to water or external impact under extreme conditions.

Example 4

The embodiment of the application discloses fire control is with insulating fire resisting cable of flexible mineral. Referring to fig. 5, the difference from embodiment 3 is that: the flexible strip 7 is provided with a reinforcing core 8 arranged along the length direction in a penetrating way, during production, the flexible strip 7 is extruded and wrapped on the periphery of the reinforcing core 8, the reinforcing core 8 can be hemp rope, carbon fiber rope, steel rope and the like, but rope-shaped objects which can enhance the tensile strength of the whole flexible strip 7 can be used; in other embodiments, can also establish the reinforcement core 8 to be made by high carbon steel or spring steel, then the spiral can also play effectual structural support effect to flexible strip 7 around the reinforcement core 8 in the flexible strip 7 after rolling up, and then plays the structural support effect of flexible buffering to this application, even flexible strip 7 meets fire and ceramic the back, also can strengthen the structural strength who pottery flexible strip 7 to this application in the conflagration plays good shock resistance.

Example 5

The embodiment of the application discloses fire control is with insulating fire resisting cable of flexible mineral. The difference from example 2 is that: straight portion 42 is provided with flexible strip 7 with the contained angle department of outer convex part 41, and when the armor area was the heliciform and coiled, flexible strip 7 filled the gap between two adjacent outer convex parts 41, and the cross section of flexible strip 7 and the gap adaptation between two adjacent outer convex parts 41, and flexible strip 7 is made for ceramic silicon rubber.

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 (10)

1. The utility model provides a fire control is with flexible mineral insulation fire resisting cable, includes conductor (1), insulating layer (2), isolation layer (3), armor (4), outer jacket (5), insulating layer (2) cladding in conductor (1) outer and with conductor (1) constitutes the sinle silk, the sinle silk is provided with a plurality ofly, its characterized in that: the plurality of wire cores are coated with the isolating layer (3) together or the isolating layer (3) is coated with the wire cores, and the armor layer (4) and the outer protective layer (5) are sequentially coated outside the isolating layer (3) or the isolating layers (3); armor (4) set up to the armor area that the heliciform coiled, the armor area is including all along outer convex part (41), straight portion (42) and the outer portion of turning over (43) that its length direction set up, works as when the armor area is the heliciform and coils, outer portion of turning over (43) embedding the indent side of outer convex part (41).

2. A fire fighting flexible mineral insulated fire resistant cable as defined in claim 1, wherein: the insulating layer (2) is formed by extruding or wrapping ceramic silicon rubber.

3. A fire fighting flexible mineral insulated fire resistant cable as defined in claim 1, wherein: the isolation layer (3) is formed by wrapping or filling mineral materials.

4. A fire fighting flexible mineral insulated fire resistant cable as defined in claim 1, wherein: the armor belt is a copper belt, a stainless steel belt or an aluminum alloy belt.

5. A fire fighting flexible mineral insulated fire resistant cable as defined in claim 1, wherein: the conductor (1) is a stranded wire.

6. A fire fighting flexible mineral insulated fire resistant cable as defined in claim 1, wherein: the plurality of wire cores are arranged in a straight line or are twisted with each other.

7. A fire fighting flexible mineral-insulated fire resistant cable according to any one of claims 1 to 6, characterized in that: the included angle department of straight portion (42) with outer folded portion (43) is provided with sealing strip (6), sealing strip (6) for with armor area syntropy spiral winding forms.

8. A fire fighting flexible mineral insulated fire resistant cable as defined in claim 7, wherein: the sealing strip (6) is made of ceramic silicon rubber.

9. A fire fighting flexible mineral-insulated fire resistant cable according to any one of claims 1 to 6, characterized in that: the included angle department of straight portion (42) with convex part (41) is provided with flexible strip (7), and when the armor area was the heliciform and coiled, flexible strip (7) filled the gap between two adjacent convex part (41).

10. A fire fighting flexible mineral insulated fire resistant cable as defined in claim 9, wherein: the flexible strip (7) is made of ceramic silicon rubber.

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