High-flame-retardant fireproof multi-cable-core control cable

Abstract

The utility model discloses a high-flame-retardant fireproof multi-cable-core control cable which sequentially comprises an outer sheath, an oxygen isolation layer, an aluminum-plastic composite belt wrapping layer, a second shielding layer, a second wrapping layer, a first shielding layer and a first wrapping layer from outside to inside, a center supporting rope and a plurality of first cable cores are arranged in the first wrapping layer, a center tensile rope is arranged in the center of the center supporting rope, and a plurality of second cable cores are arranged in the center tensile rope. A plurality of second cable cores and a plurality of filling cables are arranged in the second wrapping layer, the filling cables are made of low-smoke halogen-free flame-retardant materials, and the oxygen isolation layer is a low-smoke halogen-free oxygen isolation layer. The control cable disclosed by the utility model has relatively good flame-retardant performance and fire-resistant performance, and is suitable for places with relatively high fire-fighting requirements; the multi-layer shielding layer structure enables the cable to have good shielding performance; the number of the first cable cores and the number of the second cable cores are large, so that the information transmission quantity of the cable is effectively increased, the number of the filling cables can be selected, and the number of the second cable cores can be selected and controlled during production.

Description

Technical Field

[0001] The utility model relates to the field of cables, and more specifically to a highly flame-retardant and fire-resistant multi-cable core control cable. Background Art

[0002] As the number of buildings increases, the demand for power and communication facilities also increases. This is mainly because modern buildings not only need to meet basic power supply needs, but also need to support various intelligent systems and equipment, such as lighting control systems, security monitoring systems, building automation systems, communication network facilities, etc. The increasing demand for power and communication from these systems and equipment has led to an increase in the number and density of control cables installed.

[0003] As the number and density of control cables increase, the paths for fire propagation also increase. Existing control cables have weak flame retardancy and fire resistance, making them difficult to use in places with high fire protection requirements. In the event of a fire, the cables will intensify the spread of the fire. When the cables burn, they will release a large amount of heat energy, allowing the fire to continue to expand. At the same time, the burning cables will ignite other combustible materials, causing the fire to worsen and causing greater losses. In addition, a large amount of toxic gases will be generated during the combustion process, causing harm to the environment and personnel. In addition, the shielding performance of some control cables is weak, making it difficult to maintain stable signal transmission capabilities, and the accuracy and reliability of the signals cannot be guaranteed. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provide a highly flame-retardant and fire-resistant multi-cable core control cable.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a control cable, comprising, from outside to inside, an outer sheath, an oxygen insulation layer, an aluminum-plastic composite tape wrapping layer, a second shielding layer, a second wrapping layer, a first shielding layer and a first wrapping layer, wherein the first wrapping layer has a central support rope and a plurality of first cable cores surrounding the central support rope, the center of the central support rope has a central tensile rope, the first cable core comprises a first conductor and a first insulating layer wrapping the first conductor, the second wrapping layer has a plurality of second cable cores and a plurality of filling cables, the second cable cores and the filling cables are alternately distributed, the second cable core comprises a second conductor and a second insulating layer wrapping the second conductor, the filling cable is made of low-smoke halogen-free flame-retardant material, the oxygen insulation layer is a low-smoke halogen-free oxygen insulation layer, and the outer sheath is made of polyvinyl chloride material.

[0006] Furthermore, the first shielding layer and the second shielding layer are both copper wire braided shielding layers.

[0007] This can enhance the cable's anti-interference capability and improve the stability and reliability of signal transmission.

[0008] Furthermore, the plurality of first cable cores are distributed in a ring shape with equal intervals, and there are eighteen first cable cores.

[0009] This gives the cable better signal transmission performance and stability, making it suitable for situations that require high-capacity, high-reliability signal transmission.

[0010] Furthermore, the plurality of second cable cores are distributed in a ring shape with equal intervals.

[0011] Thereby improving the structural stability of the cable.

[0012] Furthermore, the central support rope has a central through hole for installing a central tensile rope.

[0013] This makes it easier to install the center tension rope.

[0014] Furthermore, the cross-section of the cable is circular.

[0015] Thereby the structure of the cable is more stable.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The control cable of the present application has good flame retardant and fire resistant properties. When subjected to direct flame combustion, short circuit and open circuit failures will not occur within a certain period of time, which is conducive to fire extinguishing and reducing losses, and is suitable for places with high fire protection requirements.

[0018] 2. The control cable of the present application has a multi-layer shielding layer structure, so that the cable has good shielding performance, thereby ensuring the stability and accuracy of signal transmission.

[0019] 3. The control cable of the present application has a large number of first cable cores and second cable cores, thereby effectively increasing the information transmission capacity of the cable, being able to meet the needs of large-capacity data transmission, and being able to select the number of filler cables, so that the number of second cable cores is optional and controllable during production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the control cable;

[0021] Figure 2 This is an enlarged schematic diagram of area A;

[0022] Figure 3 This is a cross-sectional view of the control cable.

[0023] Explanation of the reference numerals: 1.1 outer sheath; 1.2 oxygen insulation layer; 1.3 aluminum-plastic composite tape wrapping layer; 1.4 second shielding layer; 1.5 second wrapping layer; 1.6 first shielding layer; 1.7 first wrapping layer; 2 center support rope; 2.1 center tensile rope; 3 first cable core; 3.1 first conductor; 3.2 first insulating layer; 4 second cable core; 4.1 second conductor; 4.2 second insulating layer; 5 filling cable. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides Figure 1-3 A highly flame-retardant and fire-resistant multi-cable core control cable is shown, which includes, from outside to inside, an outer sheath 1.1, an oxygen insulation layer 1.2, an aluminum-plastic composite tape wrapping layer 1.3, a second shielding layer 1.4, a second wrapping layer 1.5, a first shielding layer 1.6 and a first wrapping layer 1.7, wherein the first wrapping layer 1.7 has a central support rope 2 and a plurality of first cable cores 3 surrounding the central support rope 2, the center of the central support rope 2 has a central tensile rope 2.1, the first cable core 3 includes a first conductor 3.1 and a first insulating layer 3.2 wrapping the first conductor 3.1, the second wrapping layer 1.5 has a plurality of second cable cores 4 and a plurality of filling cables 5, the second cable cores 4 and the filling cables 5 are alternately distributed, the second cable core 4 includes a second conductor 4.1 and a second insulating layer 4.2 wrapping the second conductor 4.1, the filling cable 5 is made of low-smoke halogen-free flame-retardant material, the oxygen insulation layer 1.2 is a low-smoke halogen-free oxygen insulation layer, and the outer sheath 1.1 is made of polyvinyl chloride material.

[0026] The first shielding layer 1.6 and the second shielding layer 1.4 are both copper wire braided shielding layers; multiple first cable cores 3 are distributed in a ring shape with equal spacing, and there are eighteen first cable cores 3; multiple second cable cores 4 are distributed in a ring shape with equal spacing; the central support rope 2 has a central through hole for installing a central tensile rope 2.1; the cross-section of the cable is circular.

[0027] Working principle: The control cable of the present application has a low-smoke halogen-free oxygen-isolating layer with good oxygen isolation performance, which can effectively reduce the oxygen entering the cable. When the cable burns, the oxygen supply is reduced, the speed of fire spread is slowed down, thereby improving the fire resistance, and no toxic gas is released during combustion. The first shielding layer and the second shielding layer provide good shielding performance for the cable, and the aluminum-plastic composite tape sheathing layer further enhances the shielding effect, so that it can effectively resist the interference of external interference signals and ensure the stability and accuracy of signal transmission. The number of the first cable core and the second cable core is large, thereby effectively increasing the information transmission amount of the cable, which can meet the needs of large-capacity data transmission. The filling cable is made of low-smoke halogen-free flame-retardant material, which is used to fill the gap in the second sheathing layer to maintain the structural stability of the cable and enhance the flame retardant performance of the cable. When the cable burns, the release of harmful gases can be reduced, thereby reducing the losses caused by the fire, and the number of filling cables can be selected, so that the number of the second cable cores can be optional and controllable during production. In addition, the central tensile rope can provide additional support and stability when the cable is subjected to tension, preventing the cable from excessive deformation or distortion.

[0028] Although the present invention has been illustrated and described with respect to preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A highly flame retardant and fire resistant multi-core control cable, characterized in that: The cable assembly comprises, from outside to inside, an outer sheath (1.1), an oxygen barrier layer (1.2), an aluminum-plastic composite tape wrapping layer (1.3), a second shielding layer (1.4), a second wrapping layer (1.5), a first shielding layer (1.6) and a first wrapping layer (1.7); the first wrapping layer (1.7) comprises a central support rope (2) and a plurality of first cable cores (3) surrounding the central support rope (2); the central support rope (2) has a central tensile rope (2.1) at its center; the first cable core (3) comprises a first conductor (3.1) and a wrapping layer (1.7); The first insulating layer (3.2) of the first conductor (3.1) comprises a plurality of second cable cores (4) and a plurality of filling cables (5) in the second wrapping layer (1.5), the second cable cores (4) and the filling cables (5) are alternately distributed, the second cable core (4) comprises a second conductor (4.1) and a second insulating layer (4.2) wrapping the second conductor (4.1), the filling cables (5) are made of a low-smoke halogen-free flame-retardant material, the oxygen-isolating layer (1.2) is a low-smoke halogen-free oxygen-isolating layer, and the outer sheath (1.1) is made of a polyvinyl chloride material.

2. The highly flame-retardant and fire-resistant multi-core control cable according to claim 1, characterized in that: The first shielding layer (1.6) and the second shielding layer (1.4) are both copper wire braided shielding layers.

3. The highly flame-retardant and fire-resistant multi-core control cable according to claim 1, characterized in that: The plurality of first cable cores (3) are distributed in a ring-shaped manner with equal intervals, and there are eighteen first cable cores (3).

4. The highly flame-retardant and fire-resistant multi-core control cable according to claim 1, characterized in that: The plurality of second cable cores (4) are distributed in a ring-like shape with equal intervals.

5. The highly flame-retardant and fire-resistant multi-core control cable according to claim 1, characterized in that: The central support rope (2) has a central through hole capable of installing a central tensile rope (2.1).

6. The highly flame-retardant and fire-resistant multi-core control cable according to claim 1, characterized in that: The cross section of the cable is circular.

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