Fireproof flame-retardant cable
The utility model relates to the technical field of cables, concretely relates to fire prevention flame retarded cable.
In social economy life, the cable is widely applied, and due to the problems in the aspects of manufacturing, installation, operation and the like, the possibility and the danger of fire hazard of the cable are high, once the fire hazard of the cable occurs, a power supply circuit of fire-fighting equipment is burnt, the fire-fighting equipment cannot normally operate, the fire extinguishing time is delayed, and therefore greater life and property losses are caused.
According to recent data statistics, fire accidents caused by electricity are high all the year round. In the case of an electrical fire, a fire caused by the burning of the electric wire or cable occurs in a large proportion due to the aging and overload use of the electric wire or cable. Therefore, the demand for the fire-retardant property of the cable is also increasing. The prior art cable has the problem of insufficient fire resistance and flame retardance.
SUMMERY OF THE UTILITY MODEL
Defect to prior art existence, the utility model aims to provide a fire prevention flame retarded cable has promoted the fire-retardant and the fire behavior of cable greatly.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a fire-resistant, flame-retardant cable, comprising: the cable comprises a plurality of cable cores, a filling layer, a fireproof layer, a flame-retardant layer, an insulating layer, a fireproof belt and a protective sleeve;
the cable core comprises conductor and insulating skin, and the conductor comprises for the softer pure copper material of texture, and the insulating skin comprises for high temperature resistant insulating paper, and a plurality of cable core is kept apart each other, so set up, every cable core is independent each other, and high temperature resistant.
The filling layer is filled around the cable cores, and the filling layer is made of high-temperature-resistant thermosetting elastic silica gel, can resist high temperature of more than 1200 ℃ and can be normally used.
The fireproof layer wraps a plurality of cable cores and the filling layer inside the cable cores and is rounded into a round shape, and the fireproof layer is made of a metal corrugated pipe; the metal corrugated pipe is flexible, bendable and high-temperature resistant, and can effectively isolate the damage of external flame to the internal cable.
The flame-retardant layer is formed by winding a plurality of layers of fire-resistant mica tapes, and the fire-resistant mica tapes can bear the high temperature of 1000 ℃ and have better insulation and aging resistance.
The insulating layer is formed by extruding and wrapping a plurality of layers of double-sided reinforced synthetic mica tapes and crosslinked polyethylene, a plurality of grooves are uniformly distributed on the outer circumference, and the insulating layer formed by extruding and wrapping the plurality of layers of double-sided reinforced synthetic mica tapes and the crosslinked polyethylene can bear the high voltage of at least 5000V without being punctured.
The fireproof belt is composed of ceramic fiber yarns, and the ceramic fiber yarns can bear the high temperature of at least 1500 ℃.
The protective sleeve is arranged on the outermost layer;
the fire-proof layer, the flame-retardant layer, the insulating layer, the fireproof belt and the protective sleeve are sequentially distributed outside the cable cores and the filling layer.
Further, the insulating sheath is 6640 polyester film polyaramide fiber paper soft composite material with the thickness of 2 mm.
Furthermore, the flame-retardant layer is a fire-resistant mica tape with the thickness of 0.5mm, and the number of layers wound on the fireproof layer (3) is 3-6.
Furthermore, the fireproof belt is made of ceramic fiber materials with the diameter of 0.1 mm-0.3 mm, and plays roles of insulation and heat insulation.
Furthermore, the protective sleeve is made of polyvinyl chloride or a low-smoke halogen-free material.
Compared with the prior art, the beneficial effects of the utility model are that:
the multiple protection setting of filling layer, fire-retardant layer, lag and fire-resistant synthetic mica tape makes the utility model discloses a flame retardant efficiency is better.
Fig. 1 is the utility model relates to a fire prevention flame retarded cable's structural schematic diagram.
The meanings of the symbols in fig. 1 are as follows:
1-cable core, 1-conductor, 1-2-insulating skin, 2-filling layer, 3-flame retardant layer, 4-flame retardant layer, 5-insulating layer, 6-fireproof belt 7-protective sheath.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
The utility model discloses a fire prevention flame retarded cable preferred embodiment constitutes as shown in figure 1, include: the cable comprises a plurality of cable cores 1, a filling layer 2, a fireproof layer 3, a flame-retardant layer 4, an insulating layer 5, a fireproof belt 6 and a protective sleeve 7;
the cable core 1 is composed of a conductor 1-1 and an insulating sheath 1-2, the conductor 1-1 is made of a pure copper material with soft texture, the insulating sheath 1-2 is made of high-temperature-resistant insulating paper, further, the insulating sheath 1-2 is made of 6640 polyester film polyaramide fiber paper soft composite materials with the thickness of 2mm, and the cable cores 1 are isolated from one another.
The filling layer 2 is filled around the cable cores 1, and the filling layer 2 is made of high-temperature-resistant thermosetting elastic silica gel;
the fireproof layer 3 is formed by wrapping a plurality of cable cores 1 and the filling layer 2 inside the cable cores and is rounded into a round shape, and the fireproof layer 3 is made of a metal corrugated pipe;
the flame-retardant layer 4 is formed by winding a plurality of layers of fire-resistant mica tapes, further, the flame-retardant layer 4 is a fire-resistant mica tape with the thickness of 0.5mm, the number of layers wound on the fireproof layer 3 is 3-6, and 5 layers are preferred in the embodiment.
The insulating layer 5 is formed by extruding and wrapping a plurality of layers of double-sided reinforced synthetic mica tapes and crosslinked polyethylene, and a plurality of grooves are uniformly distributed on the outer circumference;
the fireproof belt 6 is made of ceramic fiber yarns, and further, the fireproof belt 6 is made of ceramic fiber materials with the diameter of 0.1-0.3 mm and plays roles of insulation and heat insulation.
The protecting sleeve 7 is arranged on the outermost layer, and further, the protecting sleeve 7 is made of polyvinyl chloride or low-smoke halogen-free materials.
The fire-proof layer 3, the flame-retardant layer 4, the insulating layer 5, the fireproof belt 6 and the protective sleeve 7 are sequentially distributed outside the cable cores 1 and the filling layer 2.
The embodiment has better flame retardant and fireproof properties, and is suitable for occasions with high requirements on flame retardant and fireproof of cables, such as high-rise buildings, markets, movie theaters, power stations, chemical plants and the like.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.