Halogen-free low-smoke intrinsically safe waterproof computer cable

Abstract

The utility model discloses a halogen-free low-smoke intrinsically safe waterproof computer cable which comprises an outer sheath, an outer waterproof layer, an outer shielding layer, an armor layer, an outer wrapping layer and a filling layer which are sequentially arranged from outside to inside, and a plurality of computer cable cores are arranged in the filling layer. The computer cable core comprises an inner shielding layer, an inner wrapping layer and a first wire core which are sequentially arranged from outside to inside, the first wire core comprises a first conductor and a first insulating layer, a supporting sleeve is further arranged in the filling layer, a standby cable core is arranged in the supporting sleeve, the standby cable core comprises an inner sheath, an inner waterproof layer and a second wire core which are sequentially arranged from outside to inside, and the first conductor and the first insulating layer are arranged in the standby cable core. The second wire core comprises a second conductor and a second insulating layer. The computer cable provided by the utility model has good water-blocking, shielding and flame-retardant properties, is safe and environment-friendly, and is provided with the standby cable core, so that the computer cable core can be replaced and used when the computer cable core is damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and more specifically to a halogen-free, low-smoke, intrinsically safe and waterproof computer cable. Background Art

[0002] Cables are made of one or more mutually insulated conductors and an outer insulating protective layer. They are used to transmit electricity or information from one place to another. There are many types of cable products, and computer cables are one of them. Computer cables are mainly divided into two categories: signal cables and power cables. Signal cables are used to transmit data and information, while power cables are used to provide power to equipment, such as power cords. In the industrial field, computer cables are mainly used to realize automated control, data acquisition and monitoring of production equipment.

[0003] In the process of using existing computer cables, when the cable core is damaged, there is no other redundant cable core to replace it, which will affect the normal operation of the equipment, cause work to be suspended, and delay the progress of work. In addition, the shielding performance of ordinary computer cables is still relatively weak, and it is difficult to resist the mutual crosstalk between circuits and the interference of external magnetic fields. The water-blocking performance is also weak. Especially when working underground, the cable is easily immersed in water vapor and short circuits and other safety accidents occur, electric sparks are generated to cause fires, causing heavy losses, and toxic gases are generated during combustion. The safety level is low, and the insulation materials of some computer cables are not resistant to high temperatures, making it difficult to continue long-term high-temperature work and having a short service life. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provide a halogen-free, low-smoke, intrinsically safe and waterproof computer cable.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a computer cable, comprising an outer sheath, an outer water-blocking layer, an outer shielding layer, an armor layer, an outer winding layer and a filling layer arranged in sequence from the outside to the inside, a plurality of computer cable cores are arranged in the filling layer, the computer cable core comprises an inner shielding layer, an inner winding layer and a first core arranged in sequence from the outside to the inside, the first core comprises a first conductor and a first insulating layer covering the first conductor, a supporting sleeve surrounded by a plurality of computer cable cores is also arranged in the filling layer, a spare cable core is arranged in the supporting sleeve, the spare cable core comprises an inner sheath, an inner water-blocking layer and a second core arranged in sequence from the outside to the inside, the second core comprises a second conductor and a second insulating layer covering the second conductor, the outer sheath and the inner sheath are both made of halogen-free low-smoke flame-retardant material, the outer water-blocking layer and the inner water-blocking layer are both water-swellable composite water-blocking tapes, the outer shielding layer is longitudinally wrapped with an aluminum-plastic composite tape, the inner shielding layer is an aluminum foil tape shielding layer, and the first insulating layer and the second insulating layer are both cross-linked polyethylene insulating layers.

[0006] Preferably, the outer sheath is made of blue flame-retardant polyethylene material.

[0007] This makes the cable easier to identify when in use.

[0008] Preferably, the outer surface of the support sleeve is coated with an aluminum-plastic composite tape.

[0009] Thereby increasing the shielding performance of the cable.

[0010] Preferably, the armor layer is a steel belt armor layer.

[0011] Thereby enhancing the mechanical properties of the cable.

[0012] Preferably, the cable is a circular structure, a plurality of computer cable cores are distributed in a circular shape with equal spacing, and the support sleeve is located at the center of the plurality of computer cable cores.

[0013] Thereby, the structure of the cable is more stable, and the supporting sleeve increases the pressure resistance of the cable.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The computer cable of the present application has a support sleeve at the center of the cable, and a spare cable core is arranged inside the support sleeve. When the computer cable core is damaged, the spare cable core can be replaced with it; when the equipment connected to the cable requires a power cord, the spare cable core can also be pulled out and replaced with the required power cord, which is more convenient to use.

[0016] 2. The computer cable of the present application is provided with inner and outer water-blocking layers, so that the cable has excellent water-blocking and moisture-proof properties; a multi-layer shielding structure is provided, which greatly improves the shielding effect of the cable and reduces the interference of external and internal magnetic fields on the transmission signal.

[0017] 3. The computer cable of the present application has an outer sheath and an inner sheath made of halogen-free low-smoke flame-retardant material, thereby improving the flame-retardant effect of the cable. No harmful gas will be produced when burning, which is safe and environmentally friendly. The outer sheath is a blue sheath, which is easy to identify.

[0018] 4. The computer cable of the present application has an insulation layer made of cross-linked polyethylene insulation, which has the characteristics of low transmission attenuation and high temperature resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model from the first perspective;

[0020] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0021] Figure 3 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0022] Figure 4 This is a schematic diagram after the spare cable core is pulled out;

[0023] Figure 5 for Figure 4 Enlarged schematic diagram of point B in the middle.

[0024] Explanation of the reference numerals: 1 outer sheath; 2 outer water-blocking layer; 3 outer shielding layer; 4 armor layer; 5 outer winding layer; 6 filling layer; 7 computer cable core; 7.1 inner shielding layer; 7.2 inner winding layer; 7.3 first insulating layer; 7.4 first conductor; 8 supporting sleeve; 9 spare cable core; 9.1 inner sheath; 9.2 inner water-blocking layer; 9.3 second insulating layer; 9.4 second conductor. DETAILED DESCRIPTION

[0025] 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.

[0026] The utility model provides Figure 1-5 The halogen-free, low-smoke, intrinsically safe, waterproof computer cable shown in the figure comprises an outer sheath 1, an outer water-blocking layer 2, an outer shielding layer 3, an armor layer 4, an outer winding layer 5, and a filling layer 6 which are sequentially arranged from the outside to the inside, wherein a plurality of computer cable cores 7 are arranged in the filling layer 6, wherein the computer cable core 7 comprises an inner shielding layer 7.1, an inner winding layer 7.2, and a first core which are sequentially arranged from the outside to the inside, wherein the first core comprises a first conductor 7.4 and a first insulating layer 7.3 which covers the first conductor 7.4, wherein a supporting sleeve 8 which is surrounded by the plurality of computer cable cores is further arranged in the filling layer 6, wherein a A spare cable core 9, the spare cable core 9 comprises an inner sheath 9.1, an inner water-blocking layer 9.2 and a second core arranged in sequence from the outside to the inside, the second core comprises a second conductor 9.4 and a second insulating layer 9.3 covering the second conductor 9.4, the outer sheath 1 and the inner sheath 9.1 are both made of halogen-free low-smoke flame-retardant material, the outer water-blocking layer 2 and the inner water-blocking layer 9.2 are both water-swellable composite water-blocking tapes, the outer shielding layer 3 is longitudinally wrapped with an aluminum-plastic composite tape, the inner shielding layer 7.1 is an aluminum foil tape shielding layer, and the first insulating layer 7.3 and the second insulating layer 9.3 are both cross-linked polyethylene insulating layers.

[0027] The outer sheath 1 is made of blue flame-retardant polyethylene material; the outer surface of the support sleeve 8 is covered with an aluminum-plastic composite tape; the armor layer 4 is a steel belt armor layer; the inner sheath 9.1 is made of halogen-free low-smoke flame-retardant material; the cable is a circular structure, and multiple computer cable cores 7 are distributed in a circular shape with equal spacing, and the support sleeve 8 is located at the center of multiple computer cable cores.

[0028] Working principle: The computer cable of the present application has a support sleeve at the center of the cable, and a spare cable core is arranged in the support sleeve. When the computer cable core is damaged, the spare cable core can be used to replace it; when the equipment connected to the cable needs a power cord, the spare cable core can also be pulled out and replaced with the required power cord. When replacing, the power cord is inserted into the support sleeve by a steel wire. Inner and outer water-blocking layers are provided, so that the cable has good water-blocking and moisture-proof properties. Inner and outer shielding layers are provided, and the outer surface of the support sleeve is also coated with an aluminum-plastic composite tape, so that the shielding effect is good, and the interference of the external magnetic field and the internal magnetic field on the transmission signal is effectively reduced. The outer shielding layer is formed by longitudinally wrapping the aluminum-plastic composite tape. The longitudinal wrapping process makes the cable have good shielding effect and good waterproof effect. The outer sheath and the inner sheath are made of halogen-free low-smoke flame-retardant material, thereby improving the flame-retardant effect of the cable. No harmful gas will be generated when burning. It is safe and environmentally friendly. The outer sheath is a blue sheath, which is easy to identify and more convenient to use. In addition, the insulation layer adopts cross-linked polyethylene insulation, so it has the characteristics of low transmission attenuation and high temperature resistance.

[0029] 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. Halogen-free, low-smoke, intrinsically safe and waterproof computer cable, characterized by: The invention comprises an outer sheath (1), an outer water-blocking layer (2), an outer shielding layer (3), an armor layer (4), an outer wrapping layer (5) and a filling layer (6) which are arranged in sequence from the outside to the inside; a plurality of computer cable cores (7) are arranged in the filling layer (6); the computer cable core (7) comprises an inner shielding layer (7.1), an inner wrapping layer (7.2) and a first wire core which are arranged in sequence from the outside to the inside; the first wire core comprises a first conductor (7.4) and a first insulating layer (7.3) covering the first conductor (7.4); a supporting sleeve (8) surrounded by the plurality of computer cable cores is further arranged in the filling layer (6); a spare cable core (9) is arranged in the supporting sleeve (8); The spare cable core (9) comprises an inner sheath (9.1), an inner water-blocking layer (9.2) and a second core which are arranged in sequence from the outside to the inside; the second core comprises a second conductor (9.4) and a second insulating layer (9.3) covering the second conductor (9.4); the outer sheath (1) and the inner sheath (9.1) are both made of halogen-free low-smoke flame-retardant material; the outer water-blocking layer (2) and the inner water-blocking layer (9.2) are both water-swellable composite water-blocking tapes; the outer shielding layer (3) is longitudinally wrapped with an aluminum-plastic composite tape; the inner shielding layer (7.1) is an aluminum foil tape shielding layer; and the first insulating layer (7.3) and the second insulating layer (9.3) are both cross-linked polyethylene insulating layers.

2. The halogen-free, low-smoke, intrinsically safe and waterproof computer cable according to claim 1 is characterized in that: The outer sheath (1) is made of blue flame-retardant polyethylene material.

3. The halogen-free, low-smoke, intrinsically safe and waterproof computer cable according to claim 1, characterized in that: The outer surface of the supporting sleeve (8) is coated with an aluminum-plastic composite tape.

4. The halogen-free, low-smoke, intrinsically safe and waterproof computer cable according to claim 1, characterized in that: The armor layer (4) is a steel belt armor layer.

5. The halogen-free, low-smoke, intrinsically safe and waterproof computer cable according to claim 1, characterized in that: The inner sheath (9.1) is made of halogen-free, low-smoke, flame-retardant material.

6. The halogen-free, low-smoke, intrinsically safe and waterproof computer cable according to claim 1, characterized in that: The cable is of a circular structure, with a plurality of computer cable cores (7) distributed in a circular shape at equal intervals, and the support sleeve (8) is located at the center of the plurality of computer cable cores.

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