Aluminum core cross-linked polyethylene insulated overhead cable

Abstract

The utility model relates to the technical field of cables, in particular to an aluminum core cross-linked polyethylene insulated overhead cable, which comprises an aluminum core and a protection assembly, the protection assembly comprises an insulating layer, an inner shielding layer, a flame-retardant material, an outer shielding layer, a flame-retardant layer, an armor layer and a surface layer, the aluminum core can be insulated and protected through the insulating layer, electric leakage is avoided during use, and the service life of the aluminum core is prolonged. Through cooperation of the inner shielding layer and the outer shielding layer, energy of the cable can be uniformized, the cable is prevented from influencing other electronic products, through cooperation of the flame-retardant material and the flame-retardant layer, external open fire caused by spontaneous combustion of the cable can be avoided, through the armor layer, the mechanical strength and tensile property of the cable can be improved, accidents during cable erection are avoided, and the service life of the cable is prolonged. Therefore, the problems that when an existing aluminum core cross-linked polyethylene insulation aerial cable is erected, the cable protects the aluminum core through cooperation of the hollowed-out air bag and the protection layer, the tensile property is insufficient, and normal use of the cable is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an aluminum core cross-linked polyethylene insulated overhead cable. Background Art

[0002] Overhead cables are overhead conductors equipped with an insulation layer and a protective outer sheath. They are a special type of cable manufactured using a production process similar to that of cross-linked cables. They are a new way of transmitting electricity between overhead conductors and underground cables. It has been found in the use of existing overhead cables that the overall structure of the overhead cables is too simple. During the construction of the overhead cables, they are easily scratched due to bumps, thereby exposing the internal aluminum core.

[0003] At present, the existing technology (CN220691729U) discloses an aluminum core cross-linked polyethylene insulated overhead cable, which includes multiple groups of aluminum cores, insulation layers, protective layers, buffer layers and multiple groups of shielding layers. The insulation layers are wrapped around the outside of the multiple groups of aluminum cores, the protective layers are wrapped around the outside of the insulation layers, and the buffer layers are wrapped around the outside of the protective layers, which can better protect and insulate the aluminum cores and improve the protection capability of the overhead cable.

[0004] However, when using the above method, workers need to stretch the cables when laying them. The cables protect the aluminum core through the hollow air bag and the protective layer, and their tensile performance is insufficient, which affects the normal use of the cables. Utility Model Content

[0005] The purpose of the utility model is to provide an aluminum core cross-linked polyethylene insulated overhead cable, aiming to solve the problem that the existing aluminum core cross-linked polyethylene insulated overhead cable needs to be stretched when the cable is installed, and the cable protects the aluminum core through the cooperation of the hollow air bag and the protective layer, and its tensile performance is insufficient, which affects the normal use of the cable.

[0006] To achieve the above object, the utility model provides an aluminum core cross-linked polyethylene insulated overhead cable, comprising an aluminum core and a protective assembly, wherein the protective assembly comprises an insulating layer, an inner shielding layer, a flame retardant material, an outer shielding layer, a flame retardant layer, an armor layer and a surface layer;

[0007] The insulating layer is fixedly connected to the aluminum core and is located on one side of the aluminum core. The inner shielding layer is fixedly connected to the insulating layer and is located on a side of the insulating layer away from the aluminum core. The flame retardant material is fixedly connected to the inner shielding layer and is located on a side of the inner shielding layer away from the insulating layer. The outer shielding layer is fixedly connected to the flame retardant material and is located on a side of the flame retardant material away from the inner shielding layer. The flame retardant layer is fixedly connected to the outer shielding layer and is located on a side of the outer shielding layer away from the flame retardant material. The armor layer is fixedly connected to the flame retardant layer and is located on a side of the flame retardant layer away from the outer shielding layer. The surface layer is fixedly connected to the armor layer and is located on a side of the armor layer away from the flame retardant layer.

[0008] Wherein, the protective component further includes a hollow reinforcement tube, which is fixedly connected to the flame retardant material and is located on one side of the flame retardant material.

[0009] Among them, the outer shielding layer includes a wrapping layer, a rubber layer and glass fiber yarns, the wrapping layer is fixedly connected to the flame retardant material and is located on one side of the flame retardant material, the rubber layer is fixedly connected to the wrapping layer and is located on one side of the wrapping layer, and the glass fiber yarns are fixedly connected to the rubber layer and fixedly connected to the flame retardant layer and are located on one side of the rubber layer.

[0010] Among them, the armor layer includes a fixing frame, an inner layer and an outer layer. The fixing frame is fixedly connected to the flame retardant layer and is located on one side of the flame retardant layer. The inner layer is fixedly connected to the fixing frame and is located on the side of the fixing frame close to the flame retardant layer. The outer layer is fixedly connected to the fixing frame and is located on the side of the fixing frame close to the surface layer.

[0011] The surface layer includes a protective layer and an outer layer. The protective layer is fixedly connected to the fixing frame and is located on the side of the fixing frame away from the flame retardant layer. The outer layer is fixedly connected to the protective layer and is located on the side of the protective layer away from the fixing frame.

[0012] The utility model discloses an aluminum core cross-linked polyethylene insulated overhead cable, in which the aluminum core is wrapped by the insulating layer, the inner shielding layer wraps the insulating layer, the outer shielding layer wraps the inner shielding layer, the flame retardant material is used to fill the gap between the inner shielding layer and the outer shielding layer, the flame retardant layer, the armor layer and the surface layer wrap the outer shielding layer in sequence, the aluminum core can be insulated and protected by the insulating layer to avoid leakage during use, the inner shielding layer and the outer shielding layer cooperate to evenly distribute the energy of the cable to prevent the cable from affecting other electronic products, the flame retardant material and the flame retardant layer cooperate to prevent the cable from spontaneous combustion and causing open flames in the outside world, and also to prevent external fires from affecting the cable itself, the armor layer can improve the mechanical strength and tensile properties of the cable to avoid accidents when the cable is installed, thereby solving the problem that the existing aluminum core cross-linked polyethylene insulated overhead cable needs to be stretched when the cable is installed, and the cable protects the aluminum core by the cooperation of the hollow air bag and the protective layer, and its tensile properties are insufficient, which affects the normal use of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of an aluminum core cross-linked polyethylene insulated overhead cable.

[0015] Figure 2 This is a schematic structural diagram from another angle of the overall structure of an aluminum core cross-linked polyethylene insulated overhead cable of the utility model.

[0016] Figure 3 The utility model is a cross-sectional view of the entirety of an aluminum core cross-linked polyethylene insulated overhead cable.

[0017] Figure 4 The utility model is a cross-sectional view of the aluminum core, the insulation layer and the inner shield of an aluminum core cross-linked polyethylene insulated overhead cable.

[0018] 101-aluminum core, 102-protective component, 103-insulating layer, 104-inner shielding layer, 105-flame retardant material, 106-outer shielding layer, 107-flame retardant layer, 108-armor layer, 109-surface layer, 110-hollow reinforcement tube, 111-wrapping layer, 112-rubber layer, 113-glass fiber yarn, 114-fixing frame, 115-inner layer, 116-outer layer, 117-protective layer, 118-outer cladding layer. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] See also Figures 1 to 4 , Figure 1 This is a schematic diagram of the overall structure of an aluminum core cross-linked polyethylene insulated overhead cable of the utility model. Figure 2 This is a schematic structural diagram of the overall structure of an aluminum core cross-linked polyethylene insulated overhead cable of the utility model from another angle. Figure 3 This is a cross-sectional view of the entirety of an aluminum core cross-linked polyethylene insulated overhead cable of the utility model. Figure 4 The utility model is a cross-sectional view of the aluminum core, the insulation layer and the inner shield of an aluminum core cross-linked polyethylene insulated overhead cable.

[0021] The utility model discloses an aluminum core cross-linked polyethylene insulated overhead cable, comprising an aluminum core 101 and a protective assembly 102, wherein the protective assembly 102 comprises an insulating layer 103, an inner shielding layer 104, a flame retardant material 105, an outer shielding layer 106, a flame retardant layer 107, an armor, a surface layer 109 and a hollow reinforcement tube 110; the outer shielding layer 106 comprises a wrapping layer 111, a rubber layer 112 and glass fiber yarns 113, the armor layer 108 comprises a fixing frame 114, an inner layer 115 and an outer layer 116, and the surface layer 109 comprises a protective layer 117 and an outer wrapping layer 118. The above-mentioned solution solves the problem that the existing aluminum core cross-linked polyethylene insulated overhead cable needs to be stretched when the cable is installed, and the cable protects the aluminum core 101 through the cooperation of the hollow air bag and the protective layer 117, and its tensile performance is insufficient, which affects the normal use of the cable.

[0022] According to this specific embodiment, electricity is transmitted through the aluminum core 101 .

[0023] Among them, the insulating layer 103 is fixedly connected to the aluminum core 101 and is located on one side of the aluminum core 101, the inner shielding layer 104 is fixedly connected to the insulating layer 103 and is located on the side of the insulating layer 103 away from the aluminum core 101, the flame retardant material 105 is fixedly connected to the inner shielding layer 104 and is located on the side of the inner shielding layer 104 away from the insulating layer 103, the outer shielding layer 106 is fixedly connected to the flame retardant material 105 and is located on the side of the flame retardant material 105 away from the inner shielding layer 104, the flame retardant layer 107 is fixedly connected to the outer shielding layer 107 and is located on the side of the flame retardant material 105 away from the inner shielding layer 104. The shielding layer 106 is fixedly connected and located on the side of the outer shielding layer 106 away from the flame retardant material 105. The armor layer 108 is fixedly connected to the flame retardant layer 107 and located on the side of the flame retardant layer 107 away from the outer shielding layer 106. The surface layer 109 is fixedly connected to the armor layer 108 and located on the side of the armor layer 108 away from the flame retardant layer 107. The aluminum core 101 is wrapped by the insulating layer 103. At the same time, the inner shielding layer 104 wraps the insulating layer 103, and the outer shielding layer 106 wraps the inner shielding layer 104. The flame retardant material 105 fills the gap between the inner shielding layer 104 and the outer shielding layer 106. The flame retardant layer 107, the armor layer 108 and the surface layer 109 sequentially wrap the outer shielding layer 106. The insulating layer 103 can insulate and protect the aluminum core 101 to prevent leakage during use. The cooperation of the inner shielding layer 104 and the outer shielding layer 106 can evenly distribute the energy of the cable and prevent the cable from affecting other electronic products. The cooperation of the flame retardant material 105 and the flame retardant layer 107 can prevent the spontaneous combustion of the cable from causing open flames in the outside world. It can also prevent external fires from affecting the cable itself. The armor layer 108 can improve the mechanical strength and tensile strength of the cable, avoiding accidents when installing the cable. The insulating layer 103 is made of cross-linked polyethylene material, the inner shielding layer 104 is made of aluminum foil material, and the flame retardant material 105 is made of PVC material, thereby solving the problem that the existing aluminum core cross-linked polyethylene insulated overhead cable needs to be stretched when installing the cable, and the cable protects the aluminum core 101 through the cooperation of the hollow air bag and the protective layer 117, and its tensile strength is insufficient, which affects the normal use of the cable.

[0024] Secondly, the hollow reinforcement tube 110 is fixedly connected to the flame retardant material 105 and is located on one side of the flame retardant material 105. The hollow reinforcement tube 110 separates multiple groups of the aluminum cores 101, so that the flame retardant material 105 is filled more evenly.

[0025] Again, the wrapping layer 111 is fixedly connected to the flame retardant material 105 and is located on one side of the flame retardant material 105. The rubber layer 112 is fixedly connected to the wrapping layer 111 and is located on one side of the wrapping layer 111. The glass fiber yarn 113 is fixedly connected to the rubber layer 112 and is fixedly connected to the flame retardant layer 107 and is located on one side of the rubber layer 112. The flame retardant material 105 is wrapped by the wrapping layer 111 to avoid accidents during use. The glass fiber yarn 113 can reduce the influence of external electromagnetic radiation on the cable and improve the transmission performance of the cable. The wrapping layer 111 can be made of a metal woven mesh made of tinned copper wire.

[0026] In addition, the fixing frame 114 is fixedly connected to the flame retardant layer 107 and is located on one side of the flame retardant layer 107. The inner layer 115 is fixedly connected to the fixing frame 114 and is located on the side of the fixing frame 114 close to the flame retardant layer 107. The outer layer 116 is fixedly connected to the fixing frame 114 and is located on the side of the fixing frame 114 close to the surface layer 109. The positions of the inner layer 115 and the outer layer 116 are fixed by the fixing frame 114. The inner layer 115 and the outer layer 116 are woven with steel wire, which can improve the mechanical strength and tensile properties of the cable. The inner layer 1115 and the outer layer 116 are both woven with multiple strands of steel wire.

[0027] At the same time, the protective layer 117 is fixedly connected to the fixing frame 114 and is located on the side of the fixing frame 114 away from the flame retardant layer 107. The outer sheath 118 is fixedly connected to the protective layer 117 and is located on the side of the protective layer 117 away from the fixing frame 114. The armor layer 108 is wrapped by the protective layer 117, and the outer sheath 118 is used as the outermost layer 116 of the cable. Workers can mark the basic parameters of the cable on the outer sheath 118 to facilitate subsequent identification and use. The protective layer 117 is made of polyethylene material, and the outer sheath 118 is made of natural rubber material.

[0028] The utility model is an aluminum core cross-linked polyethylene insulated overhead cable, wherein the aluminum core 101 is wrapped by the insulating layer 103, and at the same time, the inner shielding layer 104 wraps the insulating layer 103, and multiple groups of the aluminum cores 101 are separated by the hollow reinforcing tube 110, so that the flame retardant material 105 is filled more evenly, and the outer sheath 118 is used as the outermost layer 116 of the cable. Workers can mark the basic parameters of the cable on the outer sheath 118 to facilitate subsequent identification and use, and the flame retardant material 105 is wrapped by the sheath 111 to avoid accidents during use, and the glass fiber The wire 113 can reduce the influence of external electromagnetic radiation on the cable and improve the transmission performance of the cable. The fixing frame 114 is used to fix the positions of the inner layer 115 and the outer layer 116. The inner layer 115 and the outer layer 116 are woven with steel wires, which can improve the mechanical strength and tensile performance of the cable. The armor layer 108 is wrapped with the protective layer 117, thereby solving the problem that the existing aluminum core cross-linked polyethylene insulated overhead cable needs to be stretched when the cable is installed, and the cable protects the aluminum core 101 through the cooperation of the hollow air bag and the protective layer 117, and its tensile performance is insufficient, which affects the normal use of the cable.

[0029] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. An aluminum core cross-linked polyethylene insulated overhead cable, comprising an aluminum core, characterized in that: Also includes protection components; The protective assembly includes an insulating layer, an inner shielding layer, a flame retardant material, an outer shielding layer, a flame retardant layer, an armor layer and a surface layer; The insulating layer is fixedly connected to the aluminum core and is located on one side of the aluminum core. The inner shielding layer is fixedly connected to the insulating layer and is located on a side of the insulating layer away from the aluminum core. The flame retardant material is fixedly connected to the inner shielding layer and is located on a side of the inner shielding layer away from the insulating layer. The outer shielding layer is fixedly connected to the flame retardant material and is located on a side of the flame retardant material away from the inner shielding layer. The flame retardant layer is fixedly connected to the outer shielding layer and is located on a side of the outer shielding layer away from the flame retardant material. The armor layer is fixedly connected to the flame retardant layer and is located on a side of the flame retardant layer away from the outer shielding layer. The surface layer is fixedly connected to the armor layer and is located on a side of the armor layer away from the flame retardant layer.

2. The aluminum core cross-linked polyethylene insulated overhead cable according to claim 1, characterized in that: The protection component also includes a hollow reinforcement tube, which is fixedly connected to the flame retardant material and is located on one side of the flame retardant material.

3. The aluminum core cross-linked polyethylene insulated overhead cable according to claim 2, characterized in that: The outer shielding layer includes a wrapping layer, a rubber layer and glass fiber yarns. The wrapping layer is fixedly connected to the flame retardant material and is located on one side of the flame retardant material. The rubber layer is fixedly connected to the wrapping layer and is located on one side of the wrapping layer. The glass fiber yarns are fixedly connected to the rubber layer and fixedly connected to the flame retardant layer and are located on one side of the rubber layer.

4. The aluminum core cross-linked polyethylene insulated overhead cable according to claim 3, characterized in that: The armor layer includes a fixing frame, an inner layer and an outer layer. The fixing frame is fixedly connected to the flame retardant layer and is located on one side of the flame retardant layer. The inner layer is fixedly connected to the fixing frame and is located on a side of the fixing frame close to the flame retardant layer. The outer layer is fixedly connected to the fixing frame and is located on a side of the fixing frame close to the surface layer.

5. The aluminum core cross-linked polyethylene insulated overhead cable according to claim 4, characterized in that: The surface layer includes a protective layer and an outer layer. The protective layer is fixedly connected to the fixing frame and is located on a side of the fixing frame away from the flame retardant layer. The outer layer is fixedly connected to the protective layer and is located on a side of the protective layer away from the fixing frame.

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