Green design control cable

Abstract

A green design control cable comprises a cable core, the cable core is composed of a plurality of insulating wire cores, and each insulating wire core comprises a conductor, an inner insulating layer, a middle insulating layer and an outer insulating layer, a wrapping layer, a shielding layer, a lining layer, a metal armor layer and an outer sheath are sequentially arranged outside the whole cable core from inside to outside, a filling layer is arranged between the insulating wire cores and the wrapping layer, the conductors, the shielding layer and the metal armor layer are all made of aluminum alloy materials, the inner insulating layer is a cross-linked polyethylene insulating layer, and the outer sheath is an outer sheath. The middle insulating layer is a low-smoke halogen-free flame-retardant polyolefin insulating layer, the external insulating layer is a cross-linked polyethylene insulating layer, and the external insulating layer is provided with a color mark. The solar water heater is green and environment-friendly, saves energy, reduces cost, and has a wider strategic prospect.

Description

Technical Field

[0001] The utility model belongs to the field of cable manufacturing, and specifically relates to a new green design control cable. Background Art

[0002] Control cables are mainly used as signal transmission for various electrical appliances, electronic computer systems, monitoring circuits, and automatic control systems, as well as connecting wires between detection instruments, meters, and automatic devices. They are mainly used in fixed laying applications such as control and monitoring interlocking circuits and protection lines, and play various roles in transmitting control and signals. They are widely used in various industrial and mining enterprises, transportation, and other important departments.

[0003] With the continuous development and progress of society, resources are becoming increasingly scarce, and higher requirements are being placed on environmental protection and resource conservation. Therefore, how to apply green design methods to product design and manufacturing is an important topic that the product manufacturing industry should strengthen research on, and it has long-term benefits for promoting the sustainable development of society. At present, the control cables used in the market basically use copper conductors and copper shielding (copper wire braiding, copper tape wrapping), while aluminum (alloy) is cheaper, lighter, and has more abundant resources than copper. A large part of domestic copper materials depends on imports. Therefore, promoting the use of control cables made of aluminum alloy has a broader prospect. Utility Model Content

[0004] The utility model aims to provide a green design control cable, which is green and environmentally friendly, saves energy and reduces costs.

[0005] The utility model adopts the following technical scheme to achieve the above-mentioned purpose: a green design control cable, including a cable core, the cable core is composed of a plurality of insulating cores, each insulating core includes a conductor and an inner insulating layer, a middle insulating layer, and an outer insulating layer wrapped around the conductor from the inside to the outside in sequence, the outer part of the cable core is provided with a wrapping layer, a shielding layer, an inner lining layer, a metal armor layer and an outer sheath in sequence from the inside to the outside, a filling layer is provided between the insulating core and the wrapping layer, the conductor, the shielding layer and the metal armor layer are all made of aluminum alloy, the inner insulating layer is a cross-linked polyethylene insulating layer, the middle insulating layer is a low-smoke halogen-free flame-retardant polyolefin insulating layer, and the outer insulating layer is a cross-linked polyethylene insulating layer, wherein the outer insulating layer is color-coded.

[0006] Furthermore, the conductor of the utility model is a solid aluminum alloy, or is formed by twisting a plurality of aluminum alloy wires.

[0007] One of the preferred methods: the shielding layer adopts an aluminum alloy wire braided shielding structure or an aluminum alloy tape wound shielding structure.

[0008] The second preferred method: The shielding layer adopts a composite shielding structure of aluminum-plastic composite tape and aluminum alloy braiding.

[0009] One of the preferred methods: the metal armor layer adopts aluminum alloy belt interlocking armor or aluminum alloy wire armor.

[0010] The second preferred method is that the metal armor layer is armored with double aluminum alloy tapes, the inner aluminum alloy tape located near the wrapping layer of the metal armor layer is spirally wound outside the wrapping layer, and the outer aluminum alloy tape is wound to cover the winding gap of the inner aluminum alloy tape.

[0011] The aluminum alloy core conductor in the utility model can be a solid aluminum alloy, 7 aluminum alloy strands or more aluminum alloy filaments.

[0012] The insulation layer of the utility model adopts green and environmentally friendly cross-linked polyolefin insulation material, and the insulation layer is a three-layer co-extruded structure of an inner insulation layer, a middle insulation layer, and an outer insulation layer, which can ensure both the electrical insulation performance of the cable and the green and environmentally friendly flame retardant performance of the cable.

[0013] The conductor, shielding layer and metal armor layer are all made of aluminum alloy. The utility model adopts high elongation aluminum alloy material. By adding iron, copper and various rare earth materials to pure aluminum, the electrical safety performance of aluminum alloy conductor can be comparable to that of copper core cable. When its surface comes into contact with air, a thin and strong oxide layer can be formed, which can withstand various corrosion. Even in the case of long-term overload or overheating, the stability of the connection can be guaranteed. To achieve the same electrical transmission capacity, the comprehensive cost of direct procurement, installation and construction of aluminum alloy conductor cables can be greatly reduced, so this product can be said to be a green product for energy saving and emission reduction.

[0014] The utility model adopts high elongation aluminum alloy material, which can reduce the weight of the cable, reduce the installation cost, reduce the wear of equipment and cables, and make the installation work easier.

[0015] Green and environmentally friendly, saves energy, reduces costs, and has a broader strategic prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cable cross section of the utility model;

[0017] Figure numerals: 1. conductor, 2. inner insulation layer, 3. middle insulation layer, 4. outer insulation layer, 5. filling layer, 6. wrapping layer, 7. shielding layer, 8. lining layer, 9. metal armor layer, 10. outer sheath. Specific embodiments

[0019] The utility model is described in detail below with reference to specific drawings.

[0020] Example 1

[0021] A green design control cable, comprising a cable core, such as Figure 1As shown, the cable core is composed of multiple insulated cores, each of which includes a conductor 1 and an inner insulating layer 2, a middle insulating layer 3, and an outer insulating layer 4 wrapped around the conductor 1 from the inside to the outside. The conductor 1 is a solid aluminum alloy or is twisted by multiple aluminum alloy wires.

[0022] The entire exterior of the cable core is provided with a wrapping layer 6, a shielding layer 7, an inner lining layer 8, a metal armor layer 9 and an outer sheath 10 in sequence from the inside to the outside. A filling layer 5 is provided between the insulating core and the wrapping layer 6. The conductor 1, the shielding layer 7 and the metal armor layer 9 are all made of aluminum alloy. The shielding layer 7 adopts an aluminum alloy wire (5 series aluminum-magnesium alloy or 8000 series alloy) woven shielding structure or an aluminum alloy tape wound shielding structure. The metal armor layer 9 adopts aluminum alloy tape chain armor or aluminum alloy wire armor.

[0023] The inner insulating layer 2 is a cross-linked polyethylene insulating layer, the middle insulating layer 3 is a low-smoke halogen-free flame-retardant polyolefin insulating layer, and the outer insulating layer 4 is a cross-linked polyethylene insulating layer, wherein the outer insulating layer 4 is color-coded.

[0024] Example 2

[0025] A green design control cable, comprising a cable core, such as Figure 1 As shown, the cable core is composed of multiple insulated cores, each of which includes a conductor 1 and an inner insulating layer 2, a middle insulating layer 3, and an outer insulating layer 4 wrapped around the conductor 1 from the inside to the outside. The conductor 1 is a solid aluminum alloy or is twisted by multiple aluminum alloy wires.

[0026] The outer part of the cable core is provided with a wrapping layer 6, a shielding layer 7, an inner lining layer 8, a metal armor layer 9 and an outer sheath 10 in sequence from the inside to the outside. The outer sheath 10 adopts environmentally friendly low-smoke halogen-free flame-retardant polyolefin, and a filling layer 5 is provided between the insulating core and the wrapping layer 6. The conductor 1, the shielding layer 7 and the metal armor layer 9 are all made of aluminum alloy. The shielding layer 7 adopts an aluminum-plastic composite tape and an aluminum alloy braided composite shielding structure. The metal armor layer 9 adopts double aluminum alloy tape armoring. The inner aluminum alloy tape located in the metal armor layer close to the wrapping layer is spirally wound outside the wrapping layer, and the outer aluminum alloy tape is wound to cover the winding gap of the inner aluminum alloy tape.

[0027] The inner insulating layer 2 is a cross-linked polyethylene insulating layer, the middle insulating layer 3 is a low-smoke halogen-free flame-retardant polyolefin insulating layer, and the outer insulating layer 4 is a cross-linked polyethylene insulating layer, wherein the outer insulating layer 4 is color-coded.

[0028] In the utility model, the mechanical properties of aluminum alloy are much better than those of pure aluminum, especially the mechanical properties that affect the electrical properties of the joint; the creep phenomenon caused by long-term mechanical force can be avoided; the rebound of aluminum alloy cable is 40% lower than that of copper cable, and it has good bending performance, so it is easier to connect terminals.

[0029] The insulation of the utility model adopts three-layer co-extrusion: green and environmentally friendly cross-linked polyolefin insulation material is adopted, and the insulation is three-layer co-extruded: the inner layer is pure cross-linked polyethylene insulation, the middle layer is natural color halogen-free low-smoke flame-retardant cross-linked polyethylene insulation, and the outer layer is colored cross-linked polyethylene insulation (for color identification). On the basis of ensuring the electrical insulation performance of the cable, the outer insulating skin can also prevent the halogen-free low-smoke flame-retardant insulation material from absorbing moisture and causing the insulation performance to decrease. At the same time, the middle insulation can also ensure the green and environmentally friendly flame-retardant performance of the cable.

[0030] In the utility model, the aluminum alloy wire of the braided shielding layer is larger in size than the traditional copper wire braiding specifications, which can ensure that the resistance of the cable shielding layer is not lower than the traditional copper wire structure, and the braiding density and braiding angle can be optimized by selecting the number of parallel wires per strand of the aluminum alloy wire, fully ensuring this technical indicator.

[0031] The metal material of this cable is all aluminum alloy, which is cheaper, lighter and more abundant than copper, so it has a broader strategic prospect.

Claims

1. A green design control cable, comprising a cable core, characterized in that: The cable core is composed of multiple insulated cores. Each insulated wire core includes a conductor and an inner insulating layer, a middle insulating layer, an outer insulating layer, and a Insulation layer, the outer surface of the cable core is provided with a wrapping layer, a shielding layer, an inner lining layer, a metal armor layer and an outer sheath from the inside to the outside. A filling layer is arranged between the insulating core and the sheathing layer. The conductor, shielding layer and metal armor layer are all made of aluminum alloy. The inner insulation layer is cross-linked polyethylene insulation layer, the middle insulation layer is low-smoke halogen-free flame-retardant polyolefin insulation layer, and the outer insulation layer is Cross-linked polyethylene insulation, with color-coded outer insulation.

2. A green design control cable according to claim 1, characterized in that: The conductor is a solid aluminum alloy. Or it is made of multiple aluminum alloy wires twisted together.

3. A green design control cable according to claim 1, characterized in that: The shielding layer is braided with aluminum alloy wire Shielding structure or aluminum alloy tape wrapped shielding structure.

4. A green design control cable according to claim 1, characterized in that: The shielding layer is made of aluminum-plastic composite tape and Aluminum alloy braided composite shielding structure.

5. The green design control cable according to claim 1, characterized in that: The metal armor layer is made of aluminum alloy with interlocking Armour or aluminium alloy wire armour.

6. A green design control cable according to claim 1, characterized in that: The metal armor layer is made of double aluminum alloy The inner aluminum alloy belt located near the metal armor layer is spirally wound around the outer aluminum alloy belt. The tape is wound over the winding gap of the inner aluminum alloy tape.

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