High-performance breakdown-resistant insulated wire

Abstract

The utility model discloses a high-performance breakdown-resistant insulated wire, which comprises a wire, a first insulating filler, a wrapping layer, a second insulating filler, an outer sheath layer and a wire insulating layer. According to the utility model, the wire insulating layer is arranged between the wire and the insulating filling layer, the inner insulating layer, the middle insulating layer and the outer insulating layer are matched, a multi-layer insulating design is adopted, and the selection and the thickness of each layer of insulating material can be independently optimized, so that a better insulating effect is achieved, the damage of the insulating layers of the wire caused by external factors is avoided, and the service life of the wire is prolonged. Meanwhile, the wires can be placed in the inner cavity, so that the arrangement mode of the wires is more concise, and abrasion caused by friction between the wires is avoided.

Description

Technical Field

[0001] The utility model relates to the field of wires, in particular to a high-performance breakdown-resistant insulated wire. Background Art

[0002] Breakdown-resistant cable is a special cable design that has the ability to resist electrical breakdown under high electric field strength. Breakdown refers to the loss of insulation performance of the cable's insulation layer under high voltage, causing current to pass through the insulation layer, which may cause short circuits or failures. This type of cable has important applications in power systems, especially in places that need to withstand high voltages or harsh environmental conditions, such as power transmission lines, large industrial equipment, high-voltage test equipment, etc. By using breakdown-resistant cables, the risk of electrical failures can be effectively reduced and the stability and reliability of the power system can be improved.

[0003] The improvements to breakdown-resistant insulated wires in the prior art are mostly reflected in improving the breakdown resistance performance. For example, a Chinese patent document with publication number CN219872909U discloses a breakdown-resistant wind power control cable, including a core wire layer composed of a plurality of core wires and a first winding layer, a first aluminum foil layer, a braided layer and an outer layer sequentially coated on the outer periphery of the core wire layer; the core wire includes a plurality of wires, and the wires include a conductor and an insulating layer coated on the outer periphery of the conductor; the insulating layer is made of soft polyvinyl chloride; the technical solution provided in the present application realizes that the wind power control cable has high physical strength while having high breakdown resistance, thereby effectively extending its service life.

[0004] Although the above device has certain advantages in breakdown resistance, it still has some shortcomings:

[0005] The insulation layer of the above-mentioned cable conductor is a single-layer setting. The single-layer insulation design has a poor insulation effect to a certain extent, and the insulation layer is easily damaged due to external factors. Utility Model Content

[0006] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a high-performance breakdown-resistant insulated wire.

[0007] To achieve the above object, the present utility model adopts the following technical solutions: A high-performance insulation wire resistant to breakdown includes a wire, a first insulation filler, a wrapping layer, a second insulation filler, an outer sheath layer, and a wire insulation layer. There are multiple groups of wires. The outer surfaces of the multiple groups of wires are wrapped with an insulation filler. The outer surface of the insulation filler is fixedly connected to a wrapping layer. The outer surface of the wrapping layer is fixedly connected to a second insulation filler. The outer surface of the second filler is fixedly connected to an outer sheath layer. The wire insulation layer is disposed between the wire and the insulation filler. The wire insulation layer is fixedly connected to the outer surface of the wire. The insulation filler is fixedly connected to the outer surface of the wire insulation layer. The wire insulation layer includes an inner insulation layer, a flame-retardant insulation filler, an intermediate insulation layer, a third insulation filler, and an outer insulation layer. The outer surfaces of the multiple groups of wires are fixedly connected to an inner insulation layer. The outer surface of the inner insulation layer is fixedly connected to a flame-retardant insulation filler. The outer surface of the flame-retardant insulation layer is fixedly connected to an intermediate insulation layer. The outer surface of the intermediate insulation layer is fixedly connected to a third insulation filler. The outer surface of the third insulation filler is fixedly connected to an outer insulation layer.

[0008] As a further solution of the present utility model, the intermediate insulation layer includes a first flame-retardant coating, a support sheath, an inner cavity, and a second flame-retardant coating. The first flame-retardant coating covers the outer surface of the support sheath. The support sheath is wrapped to form an inner cavity. The inner surface of the inner cavity is covered with a second flame-retardant coating.

[0009] As a further solution of the present utility model, the inner surface of the inner cavity is fixedly connected to a flame-retardant insulation filler.

[0010] As a further solution of the present utility model, the outer surface of the first flame-retardant coating is fixedly connected to a third insulation filler.

[0011] As a further solution of the present utility model, there are multiple groups of the inner cavities, and the cross-section is in a "field" shape. The inner cavities are used to place the wires and can play a role in fixing the wires.

[0012] As a further solution of the present utility model, the wires are placed in the inner cavities, and the number of the wires is adapted to the inner cavities.

[0013] As a further solution of the present utility model, the inner insulation layer includes a flame-retardant insulation layer and an inner insulation layer. The outer surface of the flame-retardant insulation layer is fixedly connected to the inner insulation layer. The flame-retardant insulation layer is used for flame retardancy and protection of the wire.

[0014] The first insulation filler, the second insulation filler, and the third insulation filler are preferably made of polypropylene mesh filling ropes. The polypropylene material has good plasticity and good chemical stability, and can effectively fill the gaps.

[0015] The flame retardant insulating filler is preferably a mineral filler or polystyrene foam mixed with high temperature quartz sand, alumina, magnesium oxide and the like. The high density and chemical stability of the mineral filler can prevent the fire from spreading further, and it has good high temperature resistance and flame retardant properties; polystyrene foam not only has good flame retardant properties, but also has good heat insulation and shock absorption properties. In addition, polystyrene foam also has certain flexibility and viscosity, and can effectively fill the gap.

[0016] The sheath of the flame retardant insulating layer is preferably made of ceramic silicone rubber. The inner cavity of the flame retardant layer inside the sheath is used to place the wire, so it is necessary to use a material with both flame retardancy and insulation. Ceramic rubber has excellent insulation, fire resistance, flame retardancy, low smoke, non-toxicity and other properties. The molding process is simple and can be produced using traditional silicone rubber processing equipment. The residue after combustion is a hard ceramic shell, which is insoluble and does not drip in a fire environment, and plays a solid protective role in ensuring smooth power transmission in the event of a fire.

[0017] The inner insulation layer is preferably made of cross-linked polyethylene (XLPE), which is a specially treated polyethylene material with excellent electrical properties and heat resistance. It has high insulation strength and high temperature resistance, and is suitable for high temperature environments and applications requiring high electrical performance.

[0018] The supporting sheath is preferably made of epoxy resin and polyimide. These materials not only have excellent electrical insulation properties, but also have high heat resistance and chemical corrosion resistance, which can ensure that the wire can maintain stable insulation performance in various harsh environments.

[0019] The outer insulating layer is preferably made of silicone rubber, which has excellent properties such as high temperature resistance, low temperature resistance, ozone resistance, and ultraviolet resistance, and is suitable for electrical insulation outdoors or in harsh environments.

[0020] Compared with the prior art, the utility model provides a high-performance breakdown-resistant insulated wire, which has the following beneficial effects:

[0021] In the utility model, a conductor insulation layer is arranged between the conductor and the insulating filling layer, and the cooperation between the inner insulating layer, the middle insulating layer and the outer insulating layer is utilized to adopt a multi-layer insulation design. The selection and thickness of each layer of insulating material can be independently optimized to achieve a better insulation effect, and to avoid damage to the insulating layer of the conductor due to external factors. At the same time, the conductor can be placed in the inner cavity, so that the conductor arrangement method is simpler and there will be no wear due to friction between them. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2It is a schematic diagram of the cross-sectional structure of the utility model;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the insulation layer of the wire of the utility model;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the intermediate insulating layer of the utility model;

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the inner insulating layer of the utility model.

[0027] Among them: conductor-1, first insulating filler-2, winding layer-3, second insulating filler-4, outer sheath layer-5, conductor insulation layer-6, inner insulation layer-61, flame retardant insulation layer-611, inner insulation layer-612, flame retardant insulation filler-62, intermediate insulation layer-63, first flame retardant coating-631, supporting sheath-632, inner cavity-633, second flame retardant coating-634, third insulating filler-64, outer insulation layer-65. DETAILED DESCRIPTION

[0028] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] See also Figure 1-2 In the present utility model embodiment:

[0032] A high-performance insulation wire with breakdown resistance, comprising a wire 1, a first insulation filler 2, a wrapping layer 3, a second insulation filler 4, and an outer sheath layer 5. There are multiple groups of the wire 1, and the outer surfaces of the multiple groups of the wire 1 are wrapped with an insulation filler. The outer surface of the insulation filler is fixedly connected to the wrapping layer 3. The outer surface of the wrapping layer 3 is fixedly connected to the second insulation filler 4. The outer surface of the second filler is fixedly connected to the outer sheath layer 5.

[0033] Please refer to Figure 3 , in the embodiment of the present invention: A wire insulation layer 6 is arranged between the wire 1 and the insulation filler. The wire insulation layer 6 is fixedly connected to the outer surface of the wire 1. The insulation filler is fixedly connected to the outer surface of the wire insulation layer 6. The wire insulation layer 6 includes an inner insulation layer 61, a flame-retardant insulation filler 62, an intermediate insulation layer 63, a third insulation filler 64, and an outer insulation layer 65. The outer surfaces of multiple groups of the wire 1 are fixedly connected to the inner insulation layer 61. The outer surface of the inner insulation layer 61 is fixedly connected to the flame-retardant insulation filler 62. The outer surface of the flame-retardant insulation layer 611 is fixedly connected to the intermediate insulation layer 63. The outer surface of the intermediate insulation layer 63 is fixedly connected to the third insulation filler 64. The outer surface of the third insulation filler 64 is fixedly connected to the outer insulation layer 65.

[0034] Please refer to Figure 4 , in the embodiment of the present invention: The intermediate insulation layer 63 includes a first flame-retardant coating 631, a support sheath 632, an inner cavity 633, and a second flame-retardant coating 634. The first flame-retardant coating 631 covers the outer surface of the support sheath 632. The support sheath 632 is wound to form an inner cavity 633. The inner surface of the inner cavity 633 is covered with the second flame-retardant coating 634.

[0035] Please refer to Figure 1-4 , in the embodiment of the present invention: The inner surface of the inner cavity 633 is fixedly connected to the flame-retardant insulation filler 62.

[0036] Please refer to Figure 1-4 , in the embodiment of the present invention: The outer surface of the first flame-retardant coating 631 is fixedly connected to the third insulation filler 64.

[0037] Please refer to Figure 1-4 , in the embodiment of the present invention: There are multiple groups of the inner cavity 633, and the cross-section is in a "field" shape. The inner cavity 633 is used to place the wire 1 and can play a role in fixing the wire 1.

[0038] Please refer to Figure 1-4 , in the embodiment of the present invention: The wire 1 is placed in the inner cavity 633, and the number of the wire 1 is adapted to the inner cavity 633.

[0039] See also Figure 5 In the embodiment of the utility model: the inner insulating layer 61 includes a flame retardant insulating layer 611 and an internal insulating layer 612, the outer surface of the flame retardant insulating layer 611 is fixedly connected with the internal insulating layer 612, and the flame retardant insulating layer 611 is used for flame retardancy and protection of the wire 1.

[0040] The first insulating filler 2, the second insulating filler 4 and the third insulating filler 64 are preferably made of polypropylene mesh filling ropes. The polypropylene material has good plasticity and good chemical stability and can effectively fill the gaps.

[0041] The flame retardant insulating filler 62 is preferably a mineral filler or polystyrene foam mixed with high temperature quartz sand, aluminum oxide, magnesium oxide and the like. The high density and chemical stability of the mineral filler can prevent the fire from spreading further, and it has good high temperature resistance and flame retardant properties; polystyrene foam not only has good flame retardant properties, but also has good heat insulation and shock absorption properties. In addition, polystyrene foam also has certain flexibility and viscosity, and can effectively fill the gap.

[0042] The sheath of the flame retardant insulating layer 611 is preferably made of ceramic silicone rubber. The flame retardant layer cavity 633 inside the sheath is used to place the wire 1, so it is necessary to use a material with both flame retardancy and insulation. Ceramic rubber has excellent insulation, fire resistance, flame retardancy, low smoke, non-toxic and other properties. The molding process is simple and can be produced using traditional silicone rubber processing equipment. The residue after combustion is a hard ceramic shell, which is insoluble and does not drip in a fire environment, and plays a solid protective role in ensuring smooth power transmission in the event of a fire.

[0043] The inner insulating layer 61 is preferably made of cross-linked polyethylene (XLPE), which is a specially treated polyethylene material with excellent electrical properties and heat resistance. It has high insulation strength and high temperature resistance, and is suitable for high temperature environments and applications requiring high electrical performance.

[0044] The supporting sheath 632 is preferably made of epoxy resin and polyimide. These materials not only have excellent electrical insulation properties, but also have high heat resistance and chemical corrosion resistance, which can ensure that the wire 1 can maintain stable insulation performance in various harsh environments.

[0045] The outer insulating layer 65 is preferably made of silicone rubber, which has excellent properties such as high temperature resistance, low temperature resistance, ozone resistance, and ultraviolet resistance, and is suitable for electrical insulation outdoors or in harsh environments.

[0046] Here’s how it works:

[0047] The high-performance breakdown-resistant insulated wire can effectively protect the wire 1 inside the cable by setting the first insulating filler 2, and provide the first layer of protection for the wire 1 by setting the second insulating filler 4 between the wrapping layer 3 and the outer sheath layer 5;

[0048] The gap between the inner insulating layer 61 and the middle insulating layer 63 is filled with a flame-retardant insulating filler 62 to provide a second layer of protection for the inside of the conductor 1, and then a first flame-retardant coating 631 and a second flame-retardant coating 634 are provided on the middle insulating layer 63, and a third insulating filler 64 is filled between the middle insulating layer 63 and the outer insulating layer 65 to provide a third layer of protection for the inside of the cable, thereby improving the flame-retardant effect of the cable while ensuring the quality of the cable.

[0049] Compared with the prior art, the utility model provides a high-performance breakdown-resistant insulated wire, which has the following beneficial effects:

[0050] In the utility model, a conductor insulation layer 6 is arranged between the conductor 1 and the insulating filling layer, and a multi-layer insulation design is adopted by utilizing the cooperation between the inner insulating layer 61, the middle insulating layer 63 and the outer insulating layer 65. The selection and thickness of each layer of insulating material can be independently optimized to achieve a better insulation effect and avoid damage to the insulating layer of the conductor 1 due to external factors. At the same time, the conductor 1 can be placed in the inner cavity 633, so that the arrangement of the conductor 1 is simpler and there will be no wear due to friction between them.

[0051] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0052] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0053] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-performance breakdown-resistant insulated wire, comprising a wire (1), a first insulating filler (2), a winding layer (3), a second insulating filler (4), and an outer sheath layer (5). A plurality of groups of the wires (1) are provided. The outer surfaces of the plurality of groups of the wires (1) are wound with an insulating filler (2). The outer surface of the insulating filler (2) is fixedly connected to a winding layer (3). The outer surface of the winding layer (3) is fixedly connected to a second insulating filler (4). The outer surface of the second insulating filler (4) is fixedly connected to an outer sheath layer (5). Features: It further includes a wire insulating layer (6). The wire insulating layer (6) is disposed between the wire (1) and the insulating filler (2). The wire insulating layer (6) is fixedly connected to the outer surface of the wire (1). The insulating filler (2) is fixedly connected to the outer surface of the wire insulating layer (6). The wire insulating layer (6) includes an inner insulating layer (61), a flame-retardant insulating filler (62), an intermediate insulating layer (63), a third insulating filler (64), and an outer insulating layer (65). The outer surfaces of the plurality of groups of the wires (1) are fixedly connected to an inner insulating layer (61). The outer surface of the inner insulating layer (61) is fixedly connected to a flame-retardant insulating filler (62). The outer surface of the flame-retardant insulating filler (62) is fixedly connected to an intermediate insulating layer (63). The outer surface of the intermediate insulating layer (63) is fixedly connected to a third insulating filler (64). The outer surface of the third insulating filler (64) is fixedly connected to an outer insulating layer (65).

2. A high-performance breakdown-resistant insulated wire according to claim 1, characterized in that: The intermediate insulating layer (63) includes a first flame-retardant coating (631), a support sheath (632), an inner cavity (633), and a second flame-retardant coating (634). The first flame-retardant coating (631) covers the outer surface of the support sheath (632). The support sheath (632) is wound to form an inner cavity (633). The inner surface of the inner cavity (633) is covered with a second flame-retardant coating (634).

3. A high-performance breakdown-resistant insulated wire according to claim 2, characterized in that: The inner surface of the inner cavity (633) is fixedly connected to a flame-retardant insulating filler (62).

4. A high-performance breakdown-resistant insulated wire according to claim 2, characterized in that: The outer surface of the first flame-retardant coating (631) is fixedly connected to a third insulating filler (64).

5. The high-performance breakdown-resistant insulated wire according to claim 2, characterized in that: A plurality of groups of the inner cavities (633) are provided, and the cross-section is in a "field" shape.

6. The high-performance breakdown-resistant insulated wire according to claim 1, characterized in that: The wire (1) is placed in the inner cavity (633), and the number of the wires (1) is adapted to the inner cavity (633).

7. The high-performance breakdown-resistant insulated wire according to claim 1, characterized in that: The inner insulating layer (61) includes a flame-retardant insulating layer (611) and an inner insulating layer (612). The outer surface of the flame-retardant insulating layer (611) is fixedly connected to the inner insulating layer (612).

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