Power cable with high flame retardant property

Abstract

The utility model relates to the technical field of electric power, in particular to a power cable with high flame retardant property, which comprises a cable, a copper nose joint is arranged at the end part of the cable, and a traction mechanism for sharing the rigid stress of the connection of the copper nose joint and power transformation equipment is arranged at the joint of the copper nose joint and the cable. A set of power cable structure with good use stability and high flame retardant performance is provided for a power system through the cable with the traction mechanism, a set of composite low-smoke flame-retardant cable structure is provided for personnel through the arrangement of the halogen-free sheath layer, the woven flame-retardant layer, the aluminum sheath layer and the conductors, and through the auxiliary cooperation of the traction mechanism, the flame retardant performance of the cable is improved. The lower end of the copper nose connector of the cable can be used for auxiliary traction on a power transformation equipment frame, so that the bending stress generated when the copper nose connector is independently connected with a power transformation facility is reduced, and the stability of connection between the cable and power equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of power technology, specifically to a power cable with high flame retardant properties. Background Technology

[0002] Cables are the key carriers for the transmission and distribution of electrical energy in power systems. They efficiently transmit electrical energy from power plants to substations, factories, residential areas, etc., ensuring a stable power supply and supporting the electricity needs of industrial production and daily life.

[0003] The connection points between existing cables and power facilities mainly rely on copper lugs. This results in the overall tensile or bending stress of the robust and rigid cable being primarily dependent on the copper lugs, lacking a stress-dispersing structure. Consequently, the cables are prone to fatigue or damage after long-term use. Furthermore, existing cables suffer from stress concentration at connection points and insufficient flame-retardant properties. Therefore, a power cable with high flame-retardant performance is proposed. Utility Model Content

[0004] To address the problems in existing technologies, this utility model provides a power cable with high flame retardant performance, offering a power cable structure with good stability and high flame retardant properties for power systems. Through the inclusion of a halogen-free sheath, a braided flame-retardant layer, an aluminum sheath, and a conductor, a composite low-smoke flame-retardant cable structure is created. Furthermore, with the assistance of a traction mechanism, the lower end of the cable's copper lug connector can be pulled against the substation equipment rack, thereby reducing the bending stress between the copper lug connector and the substation facilities and improving the stability of the cable-power equipment connection.

[0005] The technical solution adopted by this utility model to solve its technical problem is a power cable with high flame retardant performance, including a cable, wherein a copper lug connector is provided at the end of the cable, and a traction mechanism is provided at the connection between the copper lug connector and the cable to distribute the rigid stress of the connection between the copper lug connector and the power equipment.

[0006] The cable includes a halogen-free sheath layer, a braided flame-retardant layer, an aluminum sheath layer, and a conductor. The outer surface of the conductor is covered with a polyethylene sheath layer. The braided flame-retardant layer, the aluminum sheath layer, and the conductor are sequentially arranged within the halogen-free sheath layer, and glass fiber rope is filled between the inner circumference of the aluminum sheath layer and the outer circumference of the conductor.

[0007] By adopting the above technical solution, a power cable structure with good stability and high flame retardancy is provided for the power system through a cable with a traction mechanism. By setting up a halogen-free sheath layer, a braided flame-retardant layer, an aluminum sheath layer, and a conductor, a composite low-smoke flame-retardant cable structure is provided. With the assistance of the traction mechanism, the lower end of the copper lug connector of the cable can be pulled onto the substation equipment rack, thereby reducing the bending stress between the copper lug connector and the substation facility and improving the stability of the connection between the cable and the power equipment.

[0008] Specifically, the traction mechanism includes a nylon strap, with hook and loop fasteners sewn on both sides of the nylon strap and loop fasteners on both sides of the strap. A buckle is sewn on one side of the nylon strap, and a nylon pull strap is fitted on the buckle. An adjustment buckle for adjusting the length of the nylon pull strap is provided at the end of the nylon pull strap, and a spring buckle is fitted on the nylon pull strap.

[0009] By adopting the above technical solution, an auxiliary pulling mechanism is added between the cable connection end and the power facility through the setting of the traction mechanism. In addition, when the copper lug connector is connected to the power equipment, the spring buckle is attached to the buckle on the power facility frame, and the pulling length of the nylon pull strap on the cable is adjusted by adjusting the buckle, thereby distributing the stress generated by the cable on the copper lug connector and improving the stability of the cable in long-term use.

[0010] Specifically, the halogen-free sheath layer is made of cross-linked polyethylene material.

[0011] By adopting the above technical solution, the cable has an inorganic bottom smoke and halogen-free protective structure on the outside through the setting of the halogen-free sheath layer. In the event of an accidental fire, the flame will not burn along the surface of the cable, thus improving the stability of the cable.

[0012] Specifically, the woven flame-retardant layer is made of woven polyethylene tape;

[0013] The polyethylene tape comprises two layers of polyethylene sheet material, with flame retardant filler filling between the two layers of polyethylene sheet material.

[0014] Specifically, the flame retardant filler is magnesium hydroxide or aluminum hydroxide powder.

[0015] By adopting the above technical solution, the flame retardant filler inside the braided flame retardant layer can improve the flame retardancy of the cable to a limited extent. When the outer halogen-free sheath is damaged by heat, the flame retardant filler with the braided flame retardant layer can prevent the flame from penetrating into the cable and ensure the safety of the power system.

[0016] The beneficial effects of this utility model are as follows: It provides a power cable structure with good stability and high flame retardancy for the power system through a cable equipped with a traction mechanism. By incorporating a halogen-free sheath, a braided flame-retardant layer, an aluminum sheath, and a conductor, it provides a composite low-smoke flame-retardant cable structure. With the assistance of the traction mechanism, the lower end of the cable's copper lug connector can be pulled onto the substation equipment rack, thereby reducing the bending stress between the copper lug connector and the substation facilities. This improves the stability of the cable-power equipment connection and solves the problems of existing cables relying primarily on copper lugs for connection points. This results in the overall tensile or bending stress of the robust and rigid cable structure depending mainly on the copper lugs, lacking a stress-dispersing structure, leading to fatigue or damage after long-term use. It also addresses the issues of stress concentration and insufficient flame retardancy at connection points in existing cables. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0019] Figure 2 This is a schematic diagram of the traction mechanism of this utility model;

[0020] Figure 3 This is a cross-sectional view of the cable material layer of this utility model;

[0021] Figure 4 This is a schematic diagram of the polyethylene tape of this utility model;

[0022] Figure 5 This is a cross-sectional view of the polyethylene tape of this utility model;

[0023] In the diagram: Cable 1, Copper nose connector 11, Halogen-free sheath layer 12, Braided flame retardant layer 13, Polyethylene tape 131, Polyethylene sheet 1311, Flame retardant filler 1312, Aluminum sheath layer 14, Conductor 15, Fiberglass rope 16, Traction mechanism 2, Nylon strap 21, Buckle 22, Nylon pull strap 23, Adjusting buckle 24, Spring buckle 25. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-5 As shown, the present invention provides a power cable with high flame retardant performance, including a cable 1, a copper lug connector 11 at the end of the cable 1, and a traction mechanism 2 at the connection between the copper lug connector 11 and the cable 1 to distribute the rigid stress of the connection between the copper lug connector 11 and the power equipment.

[0026] The cable 1 includes a halogen-free sheath layer 12, a braided flame-retardant layer 13, an aluminum sheath layer 14, and a conductor 15. The outer surface of the conductor 15 is covered with a polyethylene sheath layer. The braided flame-retardant layer 13, the aluminum sheath layer 14, and the conductor 15 are sequentially arranged within the halogen-free sheath layer 12, and a glass fiber rope 16 is filled between the inner periphery of the aluminum sheath layer 14 and the outer periphery of the conductor 15.

[0027] This utility model also includes a nylon strap 21, on both sides of the nylon strap 21, a hook and loop side and a loop side respectively sewn on, a buckle 22 sewn on one side of the nylon strap 21, a nylon pull strap 23 sleeved on the buckle 22, an adjusting buckle 24 for adjusting the length of the nylon pull strap 23 provided at the end of the nylon pull strap 23, and a spring buckle 25 sleeved on the nylon pull strap 23.

[0028] In use, the traction mechanism 2 is used to add an auxiliary pulling mechanism between the connection end of the cable 1 and the power facility. When the copper lug connector 11 is connected to the power equipment, the spring buckle 25 is hung on the power facility frame, and the pulling length of the nylon pull strap 23 on the cable 1 is adjusted by adjusting the buckle 24, thereby distributing the stress generated by the cable 1 on the copper lug connector 11 and improving the stability of the cable 1 in long-term use.

[0029] This utility model also includes the fact that the halogen-free sheath layer 12 is made of cross-linked polyethylene material.

[0030] When in use, the halogen-free sheath layer 12 provides an inorganic, smokeless, and halogen-free protective structure on the outside of the cable 1. In the event of an accidental fire, the flame will not burn along the surface of the cable 1, thus improving the stability of the cable.

[0031] This utility model also includes that the woven flame-retardant layer 13 is made of polyethylene tape 131;

[0032] The polyethylene strip 131 comprises two layers of polyethylene sheet 1311, and flame retardant filler 1312 is filled between the two layers of polyethylene sheet 1311.

[0033] This utility model also includes the flame retardant filler 1312 being magnesium hydroxide or aluminum hydroxide powder.

[0034] When in use, the braided flame retardant layer 13 is provided, and the flame retardant filler 1312 inside the braided flame retardant layer 13 can improve the flame retardancy of the cable 1 to a certain extent. When the outer halogen-free sheath layer 12 is damaged by heat, the flame retardant filler 1312 with the braided flame retardant layer 13 can prevent the flame from entering the interior of the cable 1, thus ensuring the safety of the power system.

[0035] The copper nose connector 11 is connected to the conductor 15.

[0036] In use, this utility model connects cable 1 to the copper busbar or connector of the power facility via copper lug connector 11 using bolts. After the copper lug connector 11 is installed, spring buckle 25 is attached to the power facility frame. During this process, the tension length of the nylon pull strap 23 on cable 1 is adjusted by adjusting buckle 24 to distribute the stress generated by cable 1 on copper lug connector 11, thereby improving the long-term stability of cable 1. During use, cable 1, formed by halogen-free sheath layer 12, braided flame-retardant layer 13, aluminum sheath layer 14, conductor 15, and fiberglass rope 16, provides... The cable structure with certain flame-retardant properties, through the setting of the halogen-free sheath layer 12, gives the outer side of the cable 1 an inorganic bottom smoke-free halogen-free protective structure. In the event of an accidental fire, the flame will not burn along the surface of the cable 1, improving the stability of the cable. With the setting of the braided flame-retardant layer 13, the flame retardant filler 1312 inside the braided flame-retardant layer 13 can improve the flame retardancy of the cable 1 to a certain extent. When the outer halogen-free sheath layer 12 is damaged by heat, the flame retardant filler 1312 in the braided flame-retardant layer 13 can prevent the flame from penetrating into the interior of the cable 1, ensuring the safety of the power system.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A power cable with high flame-retardant properties, characterized in that, Includes a cable (1), the end of which is provided with a copper nose connector (11), and a traction mechanism (2) is provided at the connection between the copper nose connector (11) and the cable (1) to distribute the rigid stress of the connection between the copper nose connector (11) and the power equipment. The cable (1) includes a halogen-free sheath layer (12), a braided flame-retardant layer (13), an aluminum sheath layer (14), and a conductor (15). The outer surface of the conductor (15) is covered with a polyethylene sheath layer. The braided flame-retardant layer (13), the aluminum sheath layer (14), and the conductor (15) are arranged sequentially inside the halogen-free sheath layer (12), and a glass fiber rope (16) is filled between the inner periphery of the aluminum sheath layer (14) and the outer periphery of the conductor (15).

2. The power cable with high flame-retardant properties according to claim 1, characterized in that, The traction mechanism (2) includes a nylon strap (21), with hook and loop fasteners and loop fasteners loop fasteners sewn on both sides of the nylon strap (21), and a buckle (22) sewn on one side of the nylon strap (21). A nylon pull strap (23) is fitted on the buckle (22), and an adjusting buckle (24) for adjusting the length of the nylon pull strap (23) is provided at the end of the nylon pull strap (23). A spring buckle (25) is fitted on the nylon pull strap (23).

3. A power cable with high flame-retardant properties according to claim 2, characterized in that, The halogen-free sheath layer (12) is made of cross-linked polyethylene material.

4. A power cable with high flame-retardant properties according to claim 3, characterized in that, The woven flame-retardant layer (13) is made of polyethylene tape (131); The polyethylene strip (131) comprises two layers of polyethylene sheet (1311), and flame retardant filler (1312) is filled between the two layers of polyethylene sheet (1311).

5. A power cable with high flame-retardant properties according to claim 4, characterized in that, The flame retardant filler (1312) is magnesium hydroxide or aluminum hydroxide powder.

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