CN219534119U

CN219534119U - Special fire-resistant high temperature resistant cable

Info

Publication number: CN219534119U
Application number: CN202320360737.9U
Authority: CN
Inventors: 陈浩; 徐锦卫
Original assignee: Shanghai Qianheng Electric Co ltd
Current assignee: Shanghai Qianheng Electric Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-08-15
Anticipated expiration: 2033-03-02

Abstract

The utility model belongs to the technical field of cables, in particular to a special fire-resistant high-temperature-resistant cable, which comprises a conductor and an insulating layer sleeved on the outer side of the conductor, wherein the insulating layer comprises a mica tape, a fluoroplastic bag and a braiding layer which are sequentially arranged from inside to outside, the mica tape is tightly attached to the conductor, copper strip embossing longitudinal bags are sleeved on the outer sides of four groups of conductors, and braiding jackets are arranged on the outer sides of the copper strip embossing longitudinal bags; the inner side of the copper strip embossing longitudinal wrapping is provided with a splicing layer, the inner side of the splicing layer is provided with a fire extinguishing layer, a glass fiber rope is filled between the weaving layer and the fire extinguishing layer, and one end outer side of the splicing layer is sleeved with a heat shrinkage sleeve. The splicing layer is matched with the heat-shrinkable sleeve, so that the cable fracture can be spliced in a sealing way, a good waterproof function is achieved, and the splicing is firmer; meanwhile, the fire extinguishing layer is arranged to realize active fire extinguishing on the cable fire point, so that the application range of the cable is improved.

Description

Special fire-resistant high temperature resistant cable

Technical Field

The utility model belongs to the technical field of cables, and particularly relates to a special fire-resistant and high-temperature-resistant cable.

Background

The cable is usually formed by twisting several wires or groups of wires, like ropes, each group of wires being insulated from each other and often twisted around a centre, the whole being covered with a highly insulating coating. The cable has an inner energized, outer insulated feature. The cable sold in the existing market has poor fire resistance and high temperature resistance, thereby affecting the application range of the cable and requiring improvement;

the technology discloses a special fire-resistant high-temperature-resistant cable, which comprises an embossing longitudinal wrapping copper belt, wherein a plurality of conductors are arranged in the embossing longitudinal wrapping copper belt, mica tapes are wrapped on the outer sides of the conductors, fluoroplastic tapes are wrapped on the outer sides of the mica tapes, glass fiber woven layers are wrapped on the outer sides of the fluoroplastic tapes, glass fiber ropes are filled between the embossing longitudinal wrapping copper belt and the glass fiber woven layers, glass fiber woven jackets are wrapped on the outer sides of the embossing longitudinal wrapping copper belt, and the special fire-resistant high-temperature-resistant cable has the technical effects of improving bending resistance, weather resistance and the like;

however, the cable of this patent can only realize isolated outside fire source, can't realize putting out a fire to the cable when the cable is inside to take place the short circuit when actual, and current cable is inconvenient concatenation in fracture department simultaneously, and the concatenation is infirm not only leads to cable secondary to take place the fire easily, can't play waterproof function moreover.

In order to solve the problems, the utility model provides a special fire-resistant and high-temperature-resistant cable.

Disclosure of Invention

To solve the problems set forth in the background art. The utility model provides a special fire-resistant high-temperature-resistant cable which has the characteristics of active fire extinguishment and firm splicing.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the special fire-resistant high-temperature-resistant cable comprises a conductor and an insulating layer sleeved on the outer side of the conductor, wherein the conductor is four groups, the insulating layer comprises a mica tape, a fluoroplastic bag and a braiding layer which are sequentially arranged from inside to outside, the mica tape is tightly attached to the conductor, copper strip embossing longitudinal wrapping is sleeved on the outer side of the four groups of conductors, and a braiding sheath is arranged on the outer side of the copper strip embossing longitudinal wrapping; the inner side of the copper strip embossing longitudinal wrapping is provided with a splicing layer, the inner side of the splicing layer is provided with a fire extinguishing layer, a glass fiber rope is filled between the weaving layer and the fire extinguishing layer, and one end outer side of the splicing layer is sleeved with a heat shrinkage sleeve.

The special fire-resistant high-temperature-resistant cable is preferably formed by twisting a plurality of copper cores and nickel cores.

As a preferable special fire-resistant and high-temperature-resistant cable, the braiding layers and the braiding jackets are formed by intersecting braiding of longitudinal glass filaments and transverse metal filaments.

As a preferable special type fire-resistant high temperature-resistant cable of the utility model, a plurality of pressing grooves are formed on the outer side and the inner side of the copper strip embossing longitudinal wrapping at equal intervals.

As the special fire-resistant high-temperature-resistant cable is preferable, the splicing layer comprises splicing pipes, a plurality of rectangular grooves are formed in the outer sides of the splicing pipes at equal intervals, and filling belts are embedded in the rectangular grooves.

As the special fire-resistant high-temperature-resistant cable is preferable, the fire extinguishing layer comprises a support sleeve, a plurality of placing grooves are formed in the outer side of the support sleeve at equal intervals, and air bags are arranged in the placing grooves.

As a special type fire-resistant high temperature-resistant cable, the inside of the air bag is preferably filled with compressed gas, and the compressed gas is inert gas.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model adopts the copper strip embossing longitudinal wrapping structure, the cable has certain flexibility and bending resistance, the glass fiber and the metal wire are alternately woven to form the woven sheath and the woven layer, the woven sheath and the woven layer have excellent high and low temperature resistance, the lowest using temperature reaches minus 60 ℃, and the highest using temperature reaches 450 ℃.

2. The splicing layer is matched with the heat-shrinkable sleeve, so that the cable fracture can be spliced in a sealing way, a good waterproof function is achieved, and the splicing is firmer; meanwhile, the fire extinguishing layer is arranged to realize active fire extinguishing on the cable fire point, so that the application range of the cable is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is one of the cross-sectional views of the present utility model;

FIG. 3 is a second cross-sectional view of the present utility model;

fig. 4 is a partial enlarged view at a in fig. 3.

In the figure: 1. a conductor; 2. an insulating layer; 21. a mica tape; 22. a fluoroplastic bag; 23. a braiding layer; 3. embossing and longitudinally wrapping the copper strips; 4. braiding a sheath; 5. splicing layers; 51. splicing pipes; 52. rectangular grooves; 53. filling the belt; 6. a fire extinguishing layer; 61. a support sleeve; 62. a placement groove; 63. an air bag; 7. glass fiber ropes; 8. and (5) a heat-shrinkable sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1 and 2;

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is one of the sectional views of the present utility model.

The special fire-resistant and high-temperature-resistant cable comprises a conductor 1 and an insulating layer 2 sleeved on the outer side of the conductor 1, wherein the conductor 1 is four groups, the insulating layer 2 comprises a mica tape 21, a fluoroplastic bag 22 and a braiding layer 23 which are sequentially arranged from inside to outside, the mica tape 21 is tightly attached to the conductor 1, copper strip embossing longitudinal wrapping 3 is sleeved on the outer side of the four groups of conductors 1, and a braiding sheath 4 is arranged on the outer side of the copper strip embossing longitudinal wrapping 3; the inboard of package 3 is indulged to copper strips impressed watermark is provided with splice layer 5, and splice layer 5's inboard is provided with fire extinguishing layer 6, and fills between weaving layer 23 and the fire extinguishing layer 6 has glass fiber rope 7, and splice layer 5's one end outside cover is equipped with pyrocondensation sleeve pipe 8.

It should be noted that: in this embodiment, the mica tape 21 and the fluoroplastic bag 22 have excellent high and low temperature resistance, the lowest use temperature reaches 60 ℃ below zero, the highest temperature reaches 450 ℃, and the fire resistance accords with IEC60331.

In this embodiment: by adopting the copper strip embossing longitudinal wrapping structure, the cable has certain flexibility and bending resistance, the braided sheath 4 and the braided layer 23 have excellent high and low temperature resistance, the lowest using temperature reaches minus 60 ℃, and the highest using temperature reaches 450 ℃.

In an alternative embodiment, the conductor 1 is formed by twisting several copper cores and nickel cores.

In an alternative embodiment, both the braid 23 and the braided sheath 4 are formed by cross braiding of longitudinal glass filaments and transverse metal filaments.

In this embodiment: the glass filaments have better high temperature resistance, the metal filaments have better tensile properties, and the woven layer 23 is ensured to have both high temperature resistance and tensile properties by the cross weaving of the longitudinal glass filaments and the transverse metal filaments.

In an alternative embodiment, a plurality of press grooves are formed on the outer side and the inner side of the copper strip embossing longitudinal wrapping 3 at equal intervals.

In this embodiment: the special structure of the copper strip embossing longitudinal wrapping 3 increases the bending resistance and weather resistance of the cable, and has good sealing performance.

As shown in fig. 3 and 4;

FIG. 3 is a second cross-sectional view of the present utility model;

fig. 4 is a partial enlarged view at a in fig. 3.

In an alternative embodiment, the splicing layer 5 comprises a splicing tube 51, the outer side of the splicing tube 51 is provided with a plurality of rectangular grooves 52 at equal intervals, and filling strips 53 are embedded in the rectangular grooves 52.

In this embodiment: when the cable breaks, only the braided sheath 4 and the copper strip embossing longitudinal wrapping 3 are required to be pulled out, the filling strip 53 is torn off to expose the rectangular groove 52, the heat-shrinkable sleeve 8 is sleeved outside the splicing tube 51, and the heat-shrinkable sleeve 8 is contracted by using a high-temperature gun after the conductor 1 is connected and matched with the rectangular groove 52 to enable the cable connection to be more stable.

In an alternative embodiment, the fire extinguishing layer 6 comprises a support sleeve 61, a plurality of placing grooves 62 are formed in the outer side of the support sleeve 61 at equal intervals, and air bags 63 are arranged in the placing grooves 62.

In an alternative embodiment, the interior of bladder 63 is filled with a compressed gas, which is an inert gas.

In this embodiment: when the cable is internally short-circuited, the air bag 63 is broken after the temperature of the conductor 1 rises and fires, and the inert gas in the air bag 63 is sprayed out to realize fixed-point fire extinguishing.

The working principle and the using flow of the utility model are as follows: when the cable breaks, only the braided sheath 4 and the copper strip embossing longitudinal wrapping 3 are required to be pulled out, the filling strip 53 is torn off to expose the rectangular groove 52, the heat-shrinkable sleeve 8 is sleeved outside the splicing tube 51, and the heat-shrinkable sleeve 8 is contracted by a high-temperature gun after the conductor 1 is connected and matched with the rectangular groove 52 to ensure that the cable connection is more stable; when the cable is internally short-circuited, the air bag 63 is broken after the temperature of the conductor 1 rises and fires, and the inert gas in the air bag 63 is sprayed out to realize fixed-point fire extinguishing.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a special fire-resistant high temperature resistant cable, includes conductor (1) and cover locate insulating layer (2) in the conductor (1) outside, its characterized in that:

the conductors (1) are four groups, the insulating layer (2) comprises a mica tape (21), a fluoroplastic bag (22) and a braiding layer (23) which are sequentially arranged from inside to outside, the mica tape (21) is tightly attached to the conductors (1), copper strip embossing longitudinal bags (3) are sleeved on the outer sides of the four groups of conductors (1), and braiding sheaths (4) are arranged on the outer sides of the copper strip embossing longitudinal bags (3);

the copper strips impressed watermark is indulged the inboard of package (3) and is provided with splice layer (5), the inboard of splice layer (5) is provided with fire extinguishing layer (6), just weaving layer (23) with fill between fire extinguishing layer (6) has glass fiber rope (7), the one end outside cover of splice layer (5) is equipped with pyrocondensation sleeve pipe (8).

2. The special fire resistant and high temperature resistant cable according to claim 1, characterized in that: the conductor (1) is formed by twisting a plurality of copper cores and nickel cores.

3. The special fire resistant and high temperature resistant cable according to claim 2, characterized in that: the braiding layers (23) and the braiding jackets (4) are formed by cross braiding of longitudinal glass filaments and transverse metal filaments.

4. A special fire resistant and high temperature resistant cable according to claim 3, characterised in that: and a plurality of pressing grooves are formed in the outer side and the inner side of the copper strip embossing longitudinal wrapping (3) at equal intervals.

5. The special fire resistant and high temperature resistant cable according to claim 4, wherein: the splicing layer (5) comprises splicing pipes (51), a plurality of rectangular grooves (52) are formed in the outer sides of the splicing pipes (51) at equal intervals, and filling belts (53) are inlaid in the rectangular grooves (52).

6. The special fire resistant and high temperature resistant cable according to claim 5, characterized in that: the fire extinguishing layer (6) comprises a supporting sleeve (61), a plurality of placing grooves (62) are formed in the outer side of the supporting sleeve (61) at equal intervals, and air bags (63) are arranged in the placing grooves (62).

7. The special fire resistant and high temperature resistant cable according to claim 6, characterized in that: the inside of the balloon (63) is filled with a compressed gas, which is an inert gas.