Fireproof wear-resistant power cable

Abstract

The utility model discloses a fireproof and wear-resistant power cable, which relates to the technical field of power cables and comprises an outer protective sleeve, the outer protective sleeve is of a flat tube structure and is a fluoroplastic insulating sheath, a fiber braid layer is arranged on the inner wall of the outer protective sleeve, a steel belt armoured device is arranged on the inner wall of the fiber braid layer, and the steel belt armoured device is arranged on the inner wall of the fiber braid layer. Three metal conductors made of copper wire materials are installed in the steel belt armoring device. According to the utility model, the three metal conductors are arranged in the steel belt armoring device to form the flat wire harness, and the flat wire harness has a larger contact area with an object than a cylindrical wire harness. According to the power cable, the three metal conductors can be well protected through the cooperation of the steel belt armoring device wrapping the outer walls of the three metal conductors and the fiber woven layer woven by the polyester fibers, so that the wear resistance of the power cable can be effectively improved, and meanwhile, the wear resistance of the power cable can be effectively improved through the design of the fiber woven layer woven by the polyester fibers and the steel belt armoring device. And the power cable has higher tensile property.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a fireproof and wear-resistant power cable. Background Art

[0002] Power cable is a cable used to transmit and distribute electrical energy. It consists of one or more conductive cores, insulation layer, protective layer, etc. Power cables can be divided into low voltage cables, medium voltage cables, high voltage cables and ultra-high voltage cables, etc., according to different voltage levels and usage environments.

[0003] The main function of power cables is to transmit electrical energy from power plants to users while ensuring a stable supply of electrical energy. Compared with overhead transmission lines, power cables have the following advantages:

[0004] Long transmission distance: The transmission distance of power cables is long, which can reduce the number and scale of substations and reduce the cost of power grid construction. Small footprint: Power cables are laid underground, do not need to occupy a large amount of land resources, and have little impact on the urban landscape. Strong anti-interference ability: The insulation performance of power cables is good, which can resist external electromagnetic interference and improve the quality of electric energy. High safety: The protective layer of power cables can prevent electric shock accidents and reduce personal safety risks. Power cables are widely used in urban power grids, industrial and mining enterprises, high-rise buildings and other fields, and are an important part of modern power systems. When purchasing power cables, appropriate models and specifications should be selected according to actual needs to ensure the safe and stable operation of the power system.

[0005] At present, the existing power cables are not fireproof, not resistant to high temperatures, and have poor wear resistance during actual use, which shortens the service life of the power cables. Therefore, a fireproof and wear-resistant power cable is provided. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a fireproof and wear-resistant power cable to solve the technical problem that the existing power cables are not fireproof, not resistant to high temperatures, and have poor wear resistance during actual use, which shortens the service life of the power cables. Therefore, a fireproof and wear-resistant power cable is provided.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] A fireproof and wear-resistant power cable comprises an outer protective sheath, which is arranged as a flat tube structure, the outer protective sheath is a fluoroplastic insulation and sheath, the inner wall of the outer protective sheath is arranged with a fiber braided layer, the inner wall of the fiber braided layer is arranged with a steel belt armor, and three metal conductors of copper wire material are installed inside the steel belt armor.

[0009] As a preferred technical solution of the utility model, the outer wall of each of the metal conductors includes a conductor diaphragm, the outer wall of the conductor diaphragm is wrapped with an insulating rubber layer, and the outer wall of the insulating rubber layer is wrapped with an insulating shielding film.

[0010] As a preferred technical solution of the utility model, the steel belt armor is filled with talcum powder filler, the three metal conductors are filled and fixed inside the steel belt armor by the talcum powder filler, and the talcum powder filler is used to isolate two adjacent metal conductors.

[0011] As a preferred technical solution of the utility model, the insulating rubber layer is made of PE polyethylene material.

[0012] As a preferred technical solution of the utility model, the fiber braided layer is formed by weaving and winding polyester fibers along the outer wall surface of the steel belt armor.

[0013] As a preferred technical solution of the utility model, the talcum powder filler is white fine granular talcum powder.

[0014] As a preferred technical solution of the utility model, the steel belt armor is a seamless copper tube.

[0015] As a preferred technical solution of the utility model, the conductor diaphragm is a layer of PP material isolation film wrapped on the surface of the metal conductor.

[0016] As a preferred technical solution of the utility model, the insulating shielding film is a layer of PE material isolation film wrapped by the outer wall of the insulating rubber layer.

[0017] The beneficial effects of the utility model are:

[0018] The utility model wraps three metal conductors in an outer protective sheath, and the outer walls of the three metal conductors are wrapped in a steel belt armor. By arranging the three metal conductors into a flat wire harness in the steel belt armor, the flat wire harness has a larger contact area with the object than a cylindrical wire harness. The steel belt armor wrapped around the outer walls of the three metal conductors and the fiber braided layer woven by polyester fibers can provide good protection for the three metal conductors, thereby effectively improving the wear resistance of the power cable. At the same time, the design of the fiber braided layer woven by polyester fibers and the steel belt armor makes the power cable have higher tensile performance.

[0019] The utility model wraps the outer wall of the fiber braided layer with an outer protective sheath, and the outer protective sheath is made of fluoroplastic insulation and sheath material, which is a synthetic polymer, and its main component is carbon fluoride. It has excellent heat resistance, chemical resistance, weather resistance and electrical insulation. Therefore, the fluoroplastic insulation and sheath material used in the power cable can provide good heat resistance to the surface of the power cable, thereby increasing the protection of the power cable against external high temperature. A talcum powder filler is provided between two adjacent metal conductors for filling and isolation. The talcum powder filler is fine talcum powder. The talcum powder plays a role of flame retardant and heat insulation between two adjacent metal conductors, and therefore, the fireproof performance of the power cable can be effectively improved.

[0020] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the cross-sectional structure of the fire-resistant and wear-resistant power cable of the utility model;

[0022] Figure 2 This is a front structural schematic diagram of the fireproof and wear-resistant power cable of the utility model;

[0023] In the figure: outer protective cover 1, fiber braided layer 2, steel belt armor 3, talcum powder filler 4, insulating shielding film 5, insulating rubber layer 6, conductor diaphragm 7, metal conductor 8. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does 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 cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0029] Example 1

[0030] See also Figure 1-2 , which is a technical solution provided by the utility model: a fireproof and wear-resistant power cable, comprising an outer protective sheath 1, the outer protective sheath 1 is set as a flat tube structure, the outer protective sheath 1 is a fluoroplastic insulation and sheath, the inner wall of the outer protective sheath 1 is provided with a fiber braided layer 2, the inner wall of the fiber braided layer 2 is provided with a steel belt armor 3, and three copper wire metal conductors 8 are installed inside the steel belt armor 3. The steel belt armor 3 is a seamless copper tube.

[0031] Specifically, the utility model wraps three metal conductors 8 in an outer protective sheath 1, and wraps the outer walls of the three metal conductors 8 in a steel belt armor 3. By arranging the three metal conductors 8 in the steel belt armor 3 into a flat wire harness, the flat wire harness has a larger contact area with the object than the cylindrical wire harness. The steel belt armor 3 wrapped around the outer walls of the three metal conductors 8 and the fiber braided layer 2 woven from polyester fibers can provide good protection for the three metal conductors 8, thereby effectively improving the wear resistance of the power cable. At the same time, through the design of the fiber braided layer 2 woven from polyester fibers and the steel belt armor 3, the power cable has higher tensile performance.

[0032] Specifically, the utility model wraps the outer wall of the fiber braided layer 2 with an outer protective sheath 1, and the outer protective sheath 1 is made of fluoroplastic insulation and sheath material, which is a synthetic polymer, and its main component is carbon fluoride. It has excellent heat resistance, chemical resistance, weather resistance and electrical insulation. Therefore, the fluoroplastic insulation and sheath material used in the power cable can provide good heat resistance to the surface of the power cable, thereby increasing the protection of the power cable against external high temperature. The talcum powder filler 4 is provided between two adjacent metal conductors 8 for filling and isolation. The talcum powder filler 4 is fine granular talcum powder. The talcum powder plays a role of flame retardant and heat insulation between the two adjacent metal conductors 8, and therefore, the fireproof performance of the power cable can be effectively improved.

[0033] The outer wall of each metal conductor 8 includes a conductor diaphragm 7, the outer wall of the conductor diaphragm 7 is wrapped with an insulating rubber layer 6, and the outer wall of the insulating rubber layer 6 is wrapped with an insulating shielding film 5. The insulating rubber layer 6 is made of PE polyethylene material, which plays a role in wrapping and protecting the metal conductor 8 and also plays a role in strengthening insulation.

[0034] The steel belt armor 3 is filled with talcum powder filler 4, and three metal conductors 8 are filled and fixed inside the steel belt armor 3 by the talcum powder filler 4, and the talcum powder filler 4 is isolated between two adjacent metal conductors 8. The talcum powder filler 4 is a white fine talcum powder. By arranging the talcum powder filler 4 between the two adjacent metal conductors 8 for filling and isolation, the talcum powder filler 4 is a fine talcum powder, and the talcum powder plays a role of flame retardant and heat insulation between the two adjacent metal conductors 8, so that the fire resistance of the power cable can be effectively improved.

[0035] The fiber braided layer 2 is formed by weaving and winding polyester fibers along the outer wall surface of the steel belt armor 3. It is a prior art to weave and wind cables with polyester fibers.

[0036] The conductor diaphragm 7 is a layer of PP material isolation film wrapped on the surface of the metal conductor 8, which has the effect of strengthening insulation.

[0037] The insulating shielding film 5 is a layer of PE material isolation film wrapped by the outer wall of the insulating rubber layer 6, which has the effect of strengthening insulation.

[0038] The overall technical effects of the present invention are as follows:

[0039] First, the utility model wraps three metal conductors 8 in an outer protective sheath 1, and wraps the outer walls of the three metal conductors 8 in a steel belt armor 3. By arranging the three metal conductors 8 in the steel belt armor 3 into a flat wire harness, the flat wire harness has a larger contact area with the object than the cylindrical wire harness. The steel belt armor 3 wrapped around the outer walls of the three metal conductors 8 and the fiber braided layer 2 woven from polyester fibers can provide good protection for the three metal conductors 8, thereby effectively improving the wear resistance of the power cable. At the same time, through the design of the fiber braided layer 2 woven from polyester fibers and the steel belt armor 3, the power cable has higher tensile performance.

[0040] Second, the utility model wraps the outer wall of the fiber braided layer 2 with an outer protective sheath 1, and the outer protective sheath 1 is made of fluoroplastic insulation and sheath material, which is a synthetic polymer, and its main component is carbon fluoride. It has excellent heat resistance, chemical resistance, weather resistance and electrical insulation. Therefore, the fluoroplastic insulation and sheath material used in this power cable can provide good heat resistance to the surface of the power cable, thereby increasing the protection of the power cable against external high temperatures. A talcum powder filler 4 is provided between two adjacent metal conductors 8 for filling and isolation. The talcum powder filler 4 is fine granular talcum powder. The talcum powder plays a role of flame retardant and heat insulation between two adjacent metal conductors 8, and therefore, the fireproof performance of the power cable can be effectively improved.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A fireproof and wear-resistant power cable, comprising an outer protective sheath (1), characterized in that: The outer protective sleeve (1) is configured as a flat tube structure, the outer protective sleeve (1) is a fluoroplastic insulation and sheath, the inner wall of the outer protective sleeve (1) is provided with a fiber braided layer (2), the inner wall of the fiber braided layer (2) is provided with a steel belt armor (3), and three copper wire metal conductors (8) are installed inside the steel belt armor (3); The outer wall of each of the metal conductors (8) comprises a conductor diaphragm (7), the outer wall of the conductor diaphragm (7) is wrapped with an insulating rubber layer (6), and the outer wall of the insulating rubber layer (6) is wrapped with an insulating shielding film (5); The steel strip armor (3) is filled with talcum powder filler (4), the three metal conductors (8) are filled and fixed inside the steel strip armor (3) by the talcum powder filler (4), and two adjacent metal conductors (8) are isolated by the talcum powder filler (4); The insulating rubber layer is made of PE polyethylene material.

2. A fireproof and wear-resistant power cable according to claim 1, characterized in that: The fiber braided layer (2) is formed by weaving and winding polyester fibers along the outer wall surface of the steel belt armor (3).

3. The fireproof and wear-resistant power cable according to claim 1, characterized in that: The talcum powder filler (4) is white fine granular talcum powder.

4. The fireproof and wear-resistant power cable according to claim 1, characterized in that: The steel belt armor is a seamless copper tube.

5. The fireproof and wear-resistant power cable according to claim 1, characterized in that: The conductor diaphragm (7) is a layer of PP material isolation film wrapped around the surface of the metal conductor (8).

6. The fireproof and wear-resistant power cable according to claim 1, characterized in that: The insulating shielding film (5) is a layer of isolation film made of PE material wrapped around the outer wall of the insulating rubber layer (6).

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