A polyethylene insulated flame-retardant control cable

Abstract

This utility model discloses a polyethylene insulated flame-retardant control cable, which includes a fixing component, multiple cable core units, an oxygen barrier, a pressure-resistant component, a fireproof layer, and a flame-retardant layer. The fixing component separates the multiple cable core units. The oxygen barrier is disposed outside the fixing component and the multiple cable core units. Multiple pressure-resistant components are disposed outside the oxygen barrier. The fireproof layer wraps around the pressure-resistant components, and the flame-retardant layer is disposed outside the fireproof layer. Multiple fire-resistant strips protrude from the side of the fireproof layer near the oxygen barrier. This polyethylene insulated flame-retardant control cable, by incorporating the fixing component and the oxygen barrier, provides comprehensive protection for the cable core units. The oxygen barrier can release water of crystallization at high temperatures, thereby lowering the ignition point to achieve fire isolation or even fire prevention. Simultaneously, the fireproof layer, with multiple fire-resistant strips protruding from the side near the oxygen barrier, further enhances the cable's fire resistance, making it less prone to circuit breakage after combustion, effectively protecting the lives and property of citizens.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular, to a polyethylene insulated flame-retardant control cable. Background Technology

[0002] Currently, cables are a type of power cable, serving as a bridge between power supply equipment and power consumption equipment, playing a role in transmitting electrical energy. They are widely used and are an indispensable tool for long-distance power transmission. With the continuous expansion of China's power industry, data communication industry, urban rail transit industry, automobile industry, and shipbuilding industry, the demand for wires and cables will also grow rapidly, and the requirements for cable performance and quality will become increasingly higher.

[0003] However, current cables have poor flame-retardant properties when exposed to fire, and are prone to burning and breaking the circuit, thus failing to effectively protect the lives and property of citizens. Utility Model Content

[0004] Therefore, it is necessary to provide a polyethylene insulated flame-retardant control cable.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a polyethylene insulated flame-retardant control cable, the polyethylene insulated flame-retardant control cable including a fixing member, multiple cable core units, an oxygen barrier, a pressure-resistant member, a fireproof layer and a flame-retardant layer, the fixing member separating the multiple cable core units, the oxygen barrier being disposed outside the fixing member and the multiple cable core units, the pressure-resistant member being multiple, all of the multiple pressure-resistant members being disposed outside the oxygen barrier, the fireproof layer wrapping the outside of the pressure-resistant member, the flame-retardant layer being disposed outside the fireproof layer, and the fireproof layer having multiple fireproof strips protruding on the side of the fireproof layer near the oxygen barrier.

[0006] Furthermore, the cross-section of the oxygen barrier is approximately pentagonal, and the oxygen barrier includes multiple oxygen barrier segments that are interconnected.

[0007] Furthermore, each of the oxygen-barrier sections includes a main body, a first connecting part, and a second connecting part. The pressure-resistant member is connected to the main body. The first connecting part is connected to one end of the main body, and the second connecting part is connected to the other end of the main body. The end of each second connecting part away from the main body is connected to the end of the first connecting part in the adjacent oxygen-barrier section away from the main body.

[0008] Furthermore, the number of cable core units is the same as the number of oxygen barrier sections, and the oxygen barrier sections and the fixing member together form a first cavity, with the cable core units disposed within the first cavity.

[0009] Furthermore, the first connecting part, the second connecting part, the pressure-resistant member, and the fireproof layer together form a second cavity, and the fireproof strip is disposed in the second cavity.

[0010] Furthermore, the fixing member includes a core rod and a partition plate. The core rod is disposed at the middle position of the plurality of cable core units, and the partition plate is disposed between two adjacent cable core units, and the partition plate is used to separate the two adjacent cable core units.

[0011] Furthermore, each of the cable core units includes a cable core and an insulation layer, the insulation layer being wrapped around the outside of the cable core.

[0012] Furthermore, an armor layer and a shielding layer are provided between the fireproof layer and the flame-retardant layer. The armor layer is wrapped around the outside of the fireproof layer, the shielding layer is wrapped around the outside of the armor layer, and the flame-retardant layer is wrapped around the outside of the shielding layer.

[0013] Furthermore, an outer protective layer is provided on the outside of the flame-retardant layer, which wraps around the outside of the flame-retardant layer.

[0014] Furthermore, the outer protective layer is coated with an antioxidant layer.

[0015] The beneficial effects of this utility model are as follows: The polyethylene insulated flame-retardant control cable provided by this utility model can provide comprehensive protection for the cable core unit by setting a fixing component and an oxygen barrier component. The oxygen barrier component can release crystal water under high temperature conditions, thereby reducing the ignition point to achieve the purpose of fire isolation or even fire prevention. At the same time, a fireproof layer is set, and multiple fireproof strips are protruding on the side of the fireproof layer near the oxygen barrier component, which can further improve the fire resistance of the cable, making it less likely to break the circuit after burning, and effectively protecting the safety of citizens' lives and property. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a structural schematic diagram of the polyethylene insulated flame-retardant control cable of this utility model.

[0018] The component names and their numbers in the diagram are as follows: 1. Fixing component; 11. Core rod; 12. Separator plate; 2. Cable core unit; 21. Cable core; 22. Insulation layer; 3. Oxygen barrier component; 30. Pressure resistant component; 31. Main body; 32. First connecting part; 33. Second connecting part; 4. Fireproof layer; 5. Armor layer; 6. Shielding layer; 7. Flame retardant layer; 8. Outer sheath; 80. Antioxidant layer. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0020] Please see Figure 1 This utility model provides a polyethylene insulated flame-retardant control cable, which includes a fixing component 1, a cable core unit 2, an oxygen barrier 3, a pressure-resistant component 30, a fireproof layer 4, and a flame-retardant layer 7. There are multiple cable core units 2. The fixing component 1 is used to separate the multiple cable core units 2. The oxygen barrier 3 is disposed outside the fixing component 1 and the multiple cable core units 2. There are multiple pressure-resistant components 30, and all of the multiple pressure-resistant components 30 are disposed outside the oxygen barrier 3. The fireproof layer 4 is wrapped around the outside of the pressure-resistant component 30, and the flame-retardant layer 7 is disposed outside the fireproof layer 4.

[0021] The fixing member 1 includes a core rod 11 and a partition plate 12. The core rod 11 is located at the middle position of multiple cable core units 2, and the partition plate 12 is located between two adjacent cable core units 2. The partition plate 12 is used to separate two adjacent cable core units 2, thereby preventing two adjacent cable core units 2 from tangling together and having anti-torsion performance.

[0022] The oxygen barrier 3 has a roughly pentagonal cross-section and includes multiple oxygen barrier segments interconnected. Each oxygen barrier segment includes a main body 31, a first connecting portion 32, and a second connecting portion 33. The pressure-resistant member 30 is connected to the main body 31. The first connecting portion 32 is connected to one end of the main body 31, and the second connecting portion 33 is connected to the other end of the main body 31. The end of each second connecting portion 33 away from the main body 31 is connected to the end of the first connecting portion 32 in the adjacent oxygen barrier segment that is also away from the main body 31. In this embodiment, the oxygen barrier 3 is made of aluminum hydroxide, which releases water of crystallization at high temperatures, thereby lowering the ignition point to achieve fire isolation or even fire prevention.

[0023] Each cable core unit 2 includes a cable core 21 and an insulation layer 22, the insulation layer 22 being wrapped around the outside of the cable core 21. In this embodiment, the cable core 21 is made of aluminum alloy, there are five cable core units 2, and the insulation layer 22 is made of polyethylene.

[0024] Furthermore, the number of cable core units 2 is the same as the number of oxygen barrier sections, and the oxygen barrier sections and the fixing member 1 together form a first cavity, in which the cable core units 2 are disposed.

[0025] Furthermore, the first connecting part 32, the second connecting part 33, the pressure-resistant member 30, and the fireproof layer 4 together form a second cavity. Multiple fireproof strips 41 protrude from the side of the fireproof layer 4 near the oxygen-barrier member 3, and these fireproof strips 41 are disposed within the second cavity. In this embodiment, both the fireproof layer 4 and the flame-retardant layer 7 are made of low-smoke halogen-free flame-retardant materials, thereby improving the fire resistance of the cable.

[0026] An armor layer 5 and a shielding layer 6 are also provided between the fireproof layer 4 and the flame-retardant layer 7. The armor layer 5 wraps around the outside of the fireproof layer 4, the shielding layer 6 wraps around the outside of the armor layer 5, and the flame-retardant layer 7 wraps around the outside of the shielding layer 6. In this embodiment, the armor layer 5 is made of flat steel wire stranded together. When the cable is subjected to external pressure, the pressure passes through the armor layer 5, which provides the cable with compressive strength. In other embodiments not shown, the armor layer 5 may also be made of round steel wire, round copper wire, or flat copper wire stranded together. The shielding layer 6 is made of 125°C irradiated cross-linked halogen-free, low-smoke flame-retardant polyolefin insulation material. After irradiation, it has excellent heat resistance, meeting the long-term operating temperature requirement of 125°C for the cable core unit 2, and also has excellent low-smoke, halogen-free flame-retardant properties.

[0027] An outer protective layer 8 is also provided outside the flame-retardant layer 7, which wraps around the flame-retardant layer 7. In this embodiment, the outer protective layer 8 is made of neoprene rubber. Neoprene rubber has high strength, good durability, excellent wear resistance, flame retardancy, light resistance, ozone resistance and atmospheric aging resistance, and good elasticity, and is resistant to impact and vibration.

[0028] Furthermore, the outer sheath 8 is coated with an anti-oxidation layer 80. In this embodiment, the anti-oxidation layer 80 is made of asphalt material, which can reduce the oxidation of the cable surface and further improve the service life of the cable.

[0029] The polyethylene insulated flame-retardant control cable provided by this utility model can provide comprehensive protection for the cable core unit 2 by setting a fixing component 1 and an oxygen barrier component 3. The oxygen barrier component 3 can release crystal water under high temperature conditions, thereby reducing the ignition point to achieve the purpose of fire isolation or even fire prevention. At the same time, a fireproof layer 4 is set, and multiple fireproof strips 41 are protruding on the side of the fireproof layer 4 near the oxygen barrier component 3, which can further improve the fire resistance of the cable, making it less likely to break the circuit after burning, and effectively protecting the life and property safety of citizens.

[0030] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A polyethylene insulated, flame-retardant control cable, characterized in that: The polyethylene insulated flame-retardant control cable includes a fixing component, multiple cable core units, an oxygen barrier, a pressure-resistant component, a fireproof layer, and a flame-retardant layer. The fixing component separates the multiple cable core units. The oxygen barrier is disposed outside the fixing component and the multiple cable core units. There are multiple pressure-resistant components, all of which are disposed outside the oxygen barrier. The fireproof layer wraps around the pressure-resistant component. The flame-retardant layer is disposed outside the fireproof layer. Multiple fireproof strips protrude from the side of the fireproof layer near the oxygen barrier.

2. A polyethylene insulated, flame-retardant control cable according to claim 1, characterized in that: The oxygen barrier has a roughly pentagonal cross-section and includes multiple oxygen barrier segments that are interconnected.

3. A polyethylene insulated, flame-retardant control cable according to claim 2, characterised in that: Each of the oxygen-barrier sections includes a main body, a first connecting part, and a second connecting part. The pressure-resistant member is connected to the main body. The first connecting part is connected to one end of the main body, and the second connecting part is connected to the other end of the main body. The end of each second connecting part away from the main body is connected to the end of the first connecting part in the adjacent oxygen-barrier section away from the main body.

4. The polyethylene insulated, flame-retardant control cable of claim 2, wherein: The number of cable core units is the same as the number of oxygen barrier sections. The oxygen barrier sections and the fixing member together form a first cavity, and the cable core units are disposed in the first cavity.

5. The polyethylene insulated, flame-retardant control cable of claim 3, wherein: The first connecting part, the second connecting part, the pressure-resistant member, and the fireproof layer together form a second cavity, and the fireproof strip is disposed in the second cavity.

6. The polyethylene insulated, flame-retardant control cable of claim 1, wherein: The fixing component includes a core rod and a partition plate. The core rod is disposed at the middle position of the plurality of cable core units, and the partition plate is disposed between two adjacent cable core units, and the partition plate is used to separate the two adjacent cable core units.

7. The polyethylene insulated, flame-retardant control cable of claim 1, wherein: Each of the cable core units includes a cable core and an insulation layer, the insulation layer being wrapped around the outside of the cable core.

8. The polyethylene insulated, flame-retardant control cable of claim 1, wherein: An armor layer and a shielding layer are further provided between the fireproof layer and the flame-retardant layer. The armor layer is wrapped around the outside of the fireproof layer, the shielding layer is wrapped around the outside of the armor layer, and the flame-retardant layer is wrapped around the outside of the shielding layer.

9. The polyethylene insulated, flame-retardant control cable of claim 1, wherein: An outer protective layer is also provided outside the flame-retardant layer, which wraps around the outside of the flame-retardant layer.

10. A polyethylene insulated, flame-retardant control cable according to claim 9, characterised in that: The outer protective layer is coated with an antioxidant layer.

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