Polyvinyl chloride aluminum alloy cable

Abstract

The utility model discloses a polyvinyl chloride aluminum alloy cable which comprises aluminum alloy conductors, an interlocking armor layer and an outer sheath. The aluminum alloy conductor is wrapped by the insulating layer to form a cable core, the cable core is wrapped by the wrapping layer, the wrapping layer is wrapped by the interlocking armor layer, and the interlocking armor layer is wrapped by the outer sheath. The insulating layer is made of a polyvinyl chloride material; the outer sheath is made of a polyether-ether-ketone material; the outer side of the outer sheath layer is also provided with an SVT fireproof bandage, and the SVT fireproof bandage is wound on the outer sheath. The cable is good in flame retardant property, and has better mechanical properties such as resistance to external extrusion, collision and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely relates to a polyvinyl chloride aluminum alloy cable. BACKGROUND

[0002] The polyvinyl chloride aluminum alloy cable is mainly suitable for multiple fields such as power system, communication system and lighting system.In the power transmission system, the performance and quality of the cable are crucial.

[0003] The utility model discloses a kind of crosslinked polyethylene insulation interlocking armoured aluminum alloy power cable of CN213601663U, including aluminum alloy conductor, cable core support frame, interlocking armoured layer and outer sheath, the aluminum alloy conductor is formed into insulated wire core by outer wrapping insulation layer, several insulated wire cores are stranded into cable core, the cable core is covered with wrapping layer, wrapping layer is equipped with inner liner outside, the outer side of the inner liner is wrapped interlocking armoured layer, the outer side of interlocking armoured layer is covered with outer sheath;Gap between the cable core and wrapping layer is equipped with filling layer and cable core support frame, the cable core support frame includes center compression rod, support rod and reinforcing strip fixed block, the center compression rod is located at the center position of cable core, one end of support rod is connected with center compression rod, and the other end is connected with reinforcing strip fixed block, the inside of the reinforcing strip fixed block is equipped with multiple reinforcing strips, and multiple reinforcing strips are uniformly arranged with cable core as central axis. The cable structure of the utility model can protect the internal structure of cable and the strength of cable, prevent the occurrence of the situation of electric leakage.

[0004] The current stage cable research and development focus on improving cable strength and protecting cable internal conductor, however, the fireproof performance improvement of polyvinyl chloride aluminum alloy cable has become a key problem to be solved at present, because in many practical application scenarios, once fire occurs, poor fireproof performance of cable can cause serious consequences. UTILITY MODEL CONTENTS

[0005] In order to overcome the above technical defects, the utility model provides a kind of polyvinyl chloride aluminum alloy cable.

[0006] In order to solve the above problems, the utility model is realized according to the following technical scheme:

[0007] The polyvinyl chloride aluminum alloy cable, including aluminum alloy conductor, interlocking armoured layer and outer sheath;The aluminum alloy conductor is formed into cable core by outer wrapping insulation layer, the cable core is covered with wrapping layer, the wrapping layer outside is wrapped interlocking armoured layer, the outer side of interlocking armoured layer is covered with outer sheath;The insulation layer adopts polyvinyl chloride material;The outer sheath is polyether ether ketone material;The outer sheath outside is further equipped with isolation layer, and the isolation layer is wound on the outer sheath;The isolation layer is SVT fireproof bandage.

[0008] Preferably, the gap between the cable core and the wrapping layer is provided with a filling layer.

[0009] Preferably, the filling layer is a dust-free asbestos cord.

[0010] Preferably, the wrapping layer adopts a double-layer structure, the inner layer of the wrapping layer is a first wrapping layer, and the outer layer of the wrapping layer is a second wrapping layer.

[0011] Preferably, the first wrapping layer is a double-layer double-sided synthetic tape mica, and the double-layer double-sided synthetic tape mica is wound in opposite directions from the two ends of the cable core.

[0012] Preferably, the second wrapping layer is a ceramicized silicone rubber, and the ceramicized silicone rubber is wrapped on the first wrapping layer.

[0013] Preferably, the interlocking armor layer is an aluminum alloy belt.

[0014] Compared with the prior art, the polyvinyl chloride aluminum alloy cable has the following beneficial effects:

[0015] The polyvinyl chloride aluminum alloy cable comprises an aluminum alloy conductor, an interlocking armor layer and an outer sheath, wherein the aluminum alloy conductor is wrapped with an insulating layer to form a cable core, the cable core is wrapped with a wrapping layer, the wrapping layer is wrapped with the interlocking armor layer, and the outer side of the interlocking armor layer is wrapped with the outer sheath; the insulating layer is made of polyvinyl chloride material; the outer sheath is made of polyether ether ketone material; and the outer side of the outer sheath layer is further provided with an SVT fireproof bandage, and the SVT fireproof bandage is wound on the outer sheath.

[0016] The polyvinyl chloride material of the insulating layer can also delay the flame propagation speed to a certain extent. The polyether ether ketone material of the outer sheath has good high-temperature resistance and can be used at 300 DEG C for a long time. Even if it is subjected to high-temperature impact for a short time, it can still maintain the relative stability of its structure and protect the internal components of the cable. The SVT fireproof bandage wound on the outer side of the outer sheath further enhances the fireproof capability. It can quickly form a dense heat insulation fireproof layer when a fire occurs, preventing heat from being transmitted to the inside of the cable. Even if the outer sheath is damaged at high temperature, the SVT fireproof bandage can still continuously play a fireproof role, and cooperates with the polyether ether ketone material outer sheath, greatly prolonging the tolerance time of the cable in a fire. BRIEF DESCRIPTION OF DRAWINGS

[0017] The specific embodiments of the utility model will be further described in detail below with reference to the drawings, in which:

[0018] Figure 1 is a cross-sectional view of the polyvinyl chloride aluminum alloy of the utility model.

[0019] In the figure: 1-aluminum alloy conductor; 2-insulation layer; 3-filling layer; 4-first wrapping layer; 5-second wrapping layer; 6-interlocking armor layer; 7-outer sheath; 8-isolation layer. DETAILED DESCRIPTION

[0020] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.

[0021] As shown in the preferred structure of the polyvinyl chloride aluminum alloy cable of the utility model. Figure 1

[0022] Example 1

[0023] As shown in the preferred structure of the polyvinyl chloride aluminum alloy cable of the utility model. Figure 1

[0024] In a specific implementation, the polyvinyl chloride material used in the insulation layer 2 can also delay the flame propagation speed to some extent. The polyether ether ketone material used in the outer sheath 7 has good high temperature resistance and can be used at 300 DEG C for a long time. Even if it is subjected to high temperature impact for a short time, it can still maintain the relative stability of its own structure and protect the internal components of the cable. The SVT fireproof bandage wound outside the outer sheath 7 further enhances the fireproofing capability. It can quickly form a dense heat insulation and fireproof layer when a fire occurs, preventing heat from being transmitted to the inside of the cable. Even if the outer sheath is damaged at high temperature, the SVT fireproof bandage can still continuously play a fireproofing role, and cooperates with the polyether ether ketone material outer sheath 7 to greatly prolong the tolerance time of the cable in a fire.

[0025] In a specific implementation, the gap between the cable core and the wrapping layer is provided with a filling layer 3.

[0026] In a specific implementation, the filling layer 3 is a dust-free asbestos cord. The use of dust-free asbestos cord has excellent heat insulation performance, which can effectively reduce the heat transfer between the cable core and the wrapping layer, further improve the overall heat insulation effect of the cable, and reduce the heat impact on other internal components of the cable when the cable is in a high temperature environment or generates heat due to overload, etc., to ensure the safe and stable operation of the cable. ​​

[0027] In a specific implementation, the wrapping layer adopts a double-layer structure, the inner layer of the wrapping layer is the first wrapping layer 4, and the outer layer of the wrapping layer is the second wrapping layer 5.

[0028] In a specific implementation, the first wrapping layer 4 is a double-layer double-sided synthetic tape mica, which is wound in opposite directions from the two ends of the cable core, so that the tape mica layer covers the surface of the cable core more uniformly and tightly, effectively improving the insulation and fireproof performance. Even in the case of partial damage, it can maintain a certain protection ability and prevent the further expansion of the fault due to its special winding structure. Compared with single-layer mica wrapping, it can reduce the material gap or uneven distribution, which greatly reduces the fireproof performance of the cable.

[0029] In a specific implementation, the second wrapping layer 5 is ceramicized silicone rubber, which is wrapped on the first wrapping layer 4. The ceramicized silicone rubber has good flexibility and insulation performance at room temperature, which can adapt to the deformation requirements such as bending and stretching of the cable in daily use. When encountering high temperature in a fire, it will quickly transform into a hard ceramic-like substance, forming a solid fireproof barrier. In cooperation with the fireproof structure of the first layer of mica and the outer sheath, the survival ability of the cable in a fire is greatly enhanced, effectively protecting the conductors and other key components inside the cable, and providing reliable protection for the continuous and stable power supply.

[0030] In a specific implementation, the interlocking armor layer 6 is an aluminum alloy strip. The aluminum alloy strip is interlocked with each other through the interlocking structure, which not only ensures that it provides high-strength protection to the internal structure of the cable in the radial direction, effectively resisting external mechanical forces such as extrusion and collision, but also enhances the flexibility of the cable to some extent, facilitating the bending and laying of the cable, and adapting to various complex wiring environments.

[0031] The wrapping structure of the present embodiment adopts a double-layer structure. In a high-temperature environment such as a fire, the mica of the first wrapping layer 4 can withstand high temperature without conducting electricity, preventing the flame from spreading along the cable. The ceramicized silicone rubber of the second wrapping layer 5 has flexibility at room temperature, and will quickly transform into a hard ceramic-like substance when encountering high temperature in a fire. This double-layer wrapping layer forms a cooperative fireproof system, which is more effective than single-material wrapping layer in blocking the damage of fire and high temperature to the internal components of the cable, providing more reliable fireproof protection for the conductors and other key components inside the cable.

[0032] The other structures of the polyvinyl chloride aluminum alloy cable described in the present embodiment refer to the prior art.

[0033] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Any modification, equivalent change and modification of the above embodiments, which does not deviate from the technical solution of the present application and is based on the technical essence of the present application, still belongs to the scope of the technical solution of the present application.

Claims

1. A polyvinyl chloride-aluminum alloy cable, characterized by: The cable comprises an aluminum alloy conductor (1), an interlocked armor layer (6) and an outer sheath (7). The cable core is formed by winding the aluminum alloy conductor (1) with an insulating layer (2), and the cable core is covered with a wrapping layer, the wrapping layer is covered with the interlocked armor layer (6), and the outer side of the interlocked armor layer is covered with the outer sheath (7). The insulating layer (2) is made of polyvinyl chloride material. The outer sheath (7) is made of polyether ether ketone material. The outer side of the outer sheath (7) is further provided with an isolation layer (8), and the isolation layer (8) is wound on the outer sheath. The isolation layer (8) is an SVT fireproof tape.

2. A polyvinyl chloride-aluminum alloy cable according to claim 1, characterized in that : The space between the cable core and the wrapping layer is provided with a filling layer (3).

3. The polyvinyl chloride aluminum alloy cable according to claim 2, characterized in that: The filling layer (3) is a dust-free asbestos rope.

4. The polyvinyl chloride aluminum alloy cable according to claim 1, characterized in that: The wrapping layer adopts a double-layer structure, the inner layer of the wrapping layer is a first wrapping layer (4), and the outer layer of the wrapping layer is a second wrapping layer (5).

5. The polyvinyl chloride aluminum alloy cable according to claim 4, characterized in that: The first wrapping layer (4) is a double-layer double-sided synthetic tape mica. The double-layer double-sided synthetic tape mica is wound in opposite directions from the two ends of the cable core.

6. The polyvinyl chloride aluminum alloy cable according to claim 4, characterized in that: The second wrapping layer (5) is ceramicized silicone rubber. The ceramicized silicone rubber is wrapped on the first wrapping layer (4).

7. A polyvinyl chloride-aluminum alloy cable according to claim 1, characterized in that : The interlocked armor layer (6) is an aluminum alloy tape.

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