Novel heatproof fireproof overhead stranded wire

Abstract

The utility model discloses a novel heatproof fireproof overhead stranded wire comprising a copper wire and a nickel wire, and the nickel wire is twisted on the outer surface of the copper wire. The stranded wire sheath is made of a polyvinyl chloride sheath, a mica tape sheath and a silicon rubber sheath, the polyvinyl chloride sheath surrounds the outer surface of the nickel wire, the mica tape sheath surrounds the outer surface of the polyvinyl chloride sheath, the silicon rubber sheath surrounds the outer surface of the mica tape sheath, the outer surface of the silicon rubber sheath is provided with a clamping groove, and the clamping groove is communicated with the clamping groove. The outer surface of the silicone rubber sheath is surrounded by a soluble polytetrafluoroethylene sheath, a clamping block is fixed on the inner side of the soluble polytetrafluoroethylene sheath, the clamping block is clamped into the clamping groove, and the protective assembly comprises a triangular protective cylinder, a connecting ring and a circular hole. According to the utility model, the silicone rubber sheath and the soluble polytetrafluoroethylene sheath are clamped through the clamping grooves and the clamping blocks, so that the tight connection between the two materials is ensured, and the overall durability and reliability of the cable are improved.

Description

A new type of heat-resistant and fireproof overhead stranded wire Technical Field

[0001] This utility model relates to the field of overhead stranded wire technology, and in particular to a new type of heat-resistant and fireproof overhead stranded wire. Background Technology

[0002] Stranded wire is produced by twisting single wires together and rotating them around a stranding axis at a constant angular velocity, or by the strands moving forward at a constant speed. The most common types are copper and aluminum. Copper and aluminum wires can be stranded into conductors of various cross-sections and types of wires and cables. Stranded wire is suitable for applications with high operating frequencies and where the skin effect and proximity effect losses of single-strand wire are too high. Using stranded wire can reduce the operating temperature. Compared with single-strand wire of the same cross-sectional area, stranded wire has higher mechanical strength and flexibility.

[0003] A search revealed Chinese Patent Publication No. CN221841660U, which discloses a heat-resistant and fire-resistant overhead stranded wire, belonging to the field of overhead stranded wires. The wire includes a wire body, a rubber sleeve on the outside of the wire body, and a protective sleeve on the outside of the wire body. The protective sleeve includes a copper wire braided mesh shielding layer disposed on the outside of the wire body, a heat insulation layer on the outside of the copper wire braided mesh shielding layer, an anti-corrosion coating layer on the outside of the heat insulation layer, a ceramic silicone fireproof layer on the outside of the anti-corrosion coating layer, and a polyethylene waterproof layer on the outside of the ceramic silicone fireproof layer. A protective component is also provided on the outside of the protective sleeve. This application, through the inclusion of the ceramic silicone fireproof layer, can provide flame retardancy, helping to prevent the wire from catching fire and thus ensuring product safety. Furthermore, the heat insulation layer prevents heat from entering the wire body, and the heat insulation layer contains a cooling material that absorbs the heat generated during wire use, helping to prevent the wire from overheating and catching fire.

[0004] Some overhead stranded cables exhibit poor high-temperature resistance during use, making them prone to aging and resulting in a short service life under high-temperature environments. This not only increases maintenance costs but also affects the stable operation of the power system. Furthermore, the outermost layer of these stranded cables rotates, and prolonged rotation can wear down the outer sheath. Therefore, there is a need to provide an overhead stranded cable with better high-temperature resistance and a longer service life. Summary of the Invention

[0005] The purpose of this invention is to provide a novel heat-resistant and fire-proof overhead stranded wire to address the issues raised in the background section, such as the poor high-temperature resistance of some overhead stranded wires, their tendency to age easily in high-temperature environments, and their short service life. This not only increases maintenance costs but also affects the stable operation of the power system. Furthermore, the outermost layer of the stranded wire rotates, and long-term rotation can cause wear and tear on the outer sheath of the stranded wire.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a novel heat-resistant and fire-proof overhead stranded wire, comprising:

[0008] Copper wire and nickel wire, wherein the nickel wire is twisted on the outer surface of the copper wire;

[0009] The stranded wire sheath is made of materials including: polyvinyl chloride sheath, mica tape sheath and silicone rubber sheath. The polyvinyl chloride sheath surrounds the outer surface of the nickel wire, the mica tape sheath surrounds the outer surface of the polyvinyl chloride sheath, and the silicone rubber sheath surrounds the outer surface of the mica tape sheath.

[0010] The outer surface of the silicone rubber sheath is provided with a slot, and the outer surface of the silicone rubber sheath is surrounded by a soluble polytetrafluoroethylene sheath.

[0011] The inner side of the soluble polytetrafluoroethylene sheath is fixed with a locking block, which is inserted into the slot.

[0012] Furthermore, it also includes a protective component, which includes a triangular protective cylinder, a connecting ring, and a circular hole. The triangular protective cylinder surrounds the outer surface of a soluble polytetrafluoroethylene sheath, the connecting ring is fixed to the outer surface of the triangular protective cylinder, and the circular hole is opened on one side of the connecting ring.

[0013] Furthermore, the internal thread of the circular hole is through which a threaded rod passes, and a rotating ring is installed at one end of the threaded rod.

[0014] Furthermore, a pressure ring is fixed to one end of the rotating ring, and the inner side of the pressure ring is in contact with the outer surface of the soluble polytetrafluoroethylene sheath.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] I. This utility model, through the arrangement of copper wire, nickel wire, PVC sheath, mica tape sheath, silicone rubber sheath, slot, soluble PTFE sheath and locking block, features a mica tape sheath 21 with excellent heat resistance and chemical stability, a mica tape sheath 22 with extremely high fire resistance, maintaining stable insulation performance in high-temperature environments and not producing harmful fumes when exposed to fire, ensuring safety in fire situations, a silicone rubber sheath 23 known for its excellent heat resistance and flexibility, and a soluble PTFE sheath 24 with good electrical insulation and chemical stability, capable of continuous use at temperatures up to 260°C. The silicone rubber sheath and the soluble PTFE sheath are engaged by the slot and locking block, ensuring a tight connection between the two materials and improving the overall durability and reliability of the cable.

[0017] Second, based on the first beneficial effect, by setting copper wire, nickel wire and protective components, through the triangular protective cylinder not on the outer surface of the stranded wire, then rotating the threaded rod, the threaded rod will move inside the connecting ring, the threaded rod drives the pressure ring to move, so that the pressure ring presses the outer surface of the stranded wire, and there is a corner on the top of the triangular protective cylinder, so that there is no need to rotate the protective cylinder, avoiding rain and snow accumulation, and improving the service life and reliability of the cable. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a first-view schematic diagram of the present invention;

[0020] Figure 2 is a schematic diagram of the internal structure of this utility model;

[0021] Figure 3 is a cross-sectional view of the protective component of this utility model.

[0022] The following is a list of components represented by each number in the attached diagram:

[0023] 11. Copper wire; 12. Nickel wire;

[0024] 21. Polyvinyl chloride sheath; 22. Mica tape sheath; 23. Silicone rubber sheath; 231. Card slot; 24. Soluble polytetrafluoroethylene sheath; 241. Card block;

[0025] 31. Triangular protective cylinder; 32. Connecting ring; 33. Circular hole; 34. Threaded rod; 35. Rotary ring; 36. Pressure ring. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0030] Please refer to Figures 1 to 3. This embodiment is a novel heat-resistant and fire-resistant overhead stranded cable, comprising:

[0031] Copper wire 11 and nickel wire 12 are twisted together on the outer surface of copper wire 11;

[0032] The stranded wire sheath is made of the following materials: polyvinyl chloride sheath 21, mica tape sheath 22 and silicone rubber sheath 23. The polyvinyl chloride sheath 21 surrounds the outer surface of the nickel wire 12, the mica tape sheath 22 surrounds the outer surface of the polyvinyl chloride sheath 21, and the silicone rubber sheath 23 surrounds the outer surface of the mica tape sheath 22.

[0033] Copper wire 11, as the main conductor, has good electrical conductivity and mechanical strength. Nickel wire 12 is twisted on the outer surface of copper wire 11, which improves the overall corrosion resistance and wear resistance, and extends the service life of the cable. Polyvinyl chloride sheath 21 provides basic physical protection to prevent direct damage to the internal conductor from the external environment, and also has certain flame retardant properties. Mica tape sheath 22 has excellent high temperature resistance and electrical insulation properties, which can maintain the electrical function of the cable in high temperature environment and prevent current leakage.

[0034] The outer surface of the silicone rubber sheath 23 is provided with a slot 231. The outer surface of the silicone rubber sheath 23 is surrounded by a soluble polytetrafluoroethylene sheath 24. A locking block 241 is fixed inside the soluble polytetrafluoroethylene sheath 24 and the locking block 241 is inserted into the slot 231.

[0035] The silicone rubber sheath 23 is known for its excellent heat resistance and flexibility, enabling it to adapt to various complex environments and providing additional physical protection and weather resistance. The soluble polytetrafluoroethylene sheath 24 has good electrical insulation and chemical stability, and can be used continuously at temperatures up to 260°C, ensuring the safety of the cable under extreme conditions. The outer surface of the silicone rubber sheath 23 has a slot 231, and the inner side of the soluble polytetrafluoroethylene sheath 24 has a locking block 241. Through the locking design of the slot 231 and the locking block 241, a tight connection between the two sheaths is ensured, improving the overall durability and reliability of the cable.

[0036] Working principle:

[0037] The mica tape sheath 22 has excellent heat resistance and chemical stability, and has extremely high fire resistance. It can maintain stable insulation performance in high-temperature environments and will not produce harmful smoke when exposed to fire, ensuring safety in fire situations. The silicone rubber sheath 23 is known for its excellent heat resistance and flexibility. The soluble polytetrafluoroethylene sheath 24 has good electrical insulation and chemical stability and can be used continuously at temperatures up to 260°C. The silicone rubber sheath 23 and the soluble polytetrafluoroethylene sheath 24 are engaged with the locking block 241 through the slot 231.

[0038] This step ensures a tight bond between the two materials, improving the overall durability and reliability of the cable.

[0039] Please refer to Figures 1 to 3; this embodiment, based on the above embodiments, further includes:

[0040] The protective assembly includes a triangular protective cylinder 31, a connecting ring 32, and a circular hole 33. The triangular protective cylinder 31 surrounds the outer surface of the soluble polytetrafluoroethylene sheath 24. The connecting ring 32 is fixed to the outer surface of the triangular protective cylinder 31. The circular hole 33 is opened on one side of the connecting ring 32. A threaded rod 34 passes through the internal thread of the circular hole 33. A rotating ring 35 is installed at one end of the threaded rod 34. A pressure ring 36 is fixed at one end of the rotating ring 35, and the inner side of the pressure ring 36 is in contact with the outer surface of the soluble polytetrafluoroethylene sheath 24.

[0041] The triangular protective cylinder 31 provides physical protection, helps to prevent rain and snow accumulation, and improves the service life and reliability of the cable. The connecting ring 32 serves as a structural support point to ensure the stability of the entire protective assembly. The rotating ring 35 is fixed to one end of the threaded rod 34, while the pressure ring 36 is fixed to the rotating ring 35. When the threaded rod 34 rotates, the inner side of the pressure ring 36 contacts the outer surface of the soluble polytetrafluoroethylene sheath 24 and applies pressure.

[0042] Working principle:

[0043] The triangular protective cylinder 31 is not on the outer surface of the stranded wire. Then, the threaded rod 34 is rotated. The threaded rod 34 will move inside the connecting ring 32. The threaded rod 34 drives the pressure ring 36 to move, so that the pressure ring 36 presses the outer surface of the stranded wire. There is a corner above the triangular protective cylinder 31, so there is no need to rotate the protective cylinder.

[0044] This step prevents rain and snow accumulation, improving the cable's lifespan and reliability.

[0045] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel heat-resistant and fire-proof overhead stranded wire, characterized in that, include: Copper wire (11) and nickel wire (12), wherein the nickel wire (12) is twisted on the outer surface of copper wire (11); The stranded wire sheath is made of the following materials: polyvinyl chloride sheath (21), mica tape sheath (22) and silicone rubber sheath (23). The polyvinyl chloride sheath (21) surrounds the outer surface of the nickel wire (12), the mica tape sheath (22) surrounds the outer surface of the polyvinyl chloride sheath (21), and the silicone rubber sheath (23) surrounds the outer surface of the mica tape sheath (22). The outer surface of the silicone rubber sheath (23) is provided with a slot (231), and the outer surface of the silicone rubber sheath (23) is surrounded by a soluble polytetrafluoroethylene sheath (24). A locking block (241) is fixed inside the soluble polytetrafluoroethylene sheath (24), and the locking block (241) is inserted into the slot (231).

2. The novel heat-resistant and fire-resistant overhead stranded wire according to claim 1, characterized in that, It also includes a protective component, which includes a triangular protective cylinder (31), a connecting ring (32), and a circular hole (33). The triangular protective cylinder (31) surrounds the outer surface of the soluble polytetrafluoroethylene sheath (24), the connecting ring (32) is fixed to the outer surface of the triangular protective cylinder (31), and the circular hole (33) is opened on one side of the connecting ring (32).

3. The novel heat-resistant and fire-resistant overhead stranded wire according to claim 2, characterized in that, The internal thread of the circular hole (33) is through which a threaded rod (34) passes, and a rotating ring (35) is installed at one end of the threaded rod (34).

4. A novel heat-resistant and fire-resistant overhead stranded wire according to claim 3, characterized in that, One end of the rotating ring (35) is fixed with a pressure ring (36), and the inner side of the pressure ring (36) is in contact with the outer surface of the soluble polytetrafluoroethylene sheath (24).

Images