Durable power cable
By introducing a combination structure of support blocks, guide rods, and cleaning cotton into the power cable, the problem of heat accumulation caused by dust buildup in the cable is solved, achieving efficient heat dissipation and insulation performance maintenance, and extending the cable's service life.
Patent Information
- Application Number
- CN202520482216.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-19
AI Technical Summary
The heat generated by power cables during operation causes dust to accumulate, forming an insulation layer. This leads to an increase in the cable's operating temperature, shortens its service life, and increases the risk of failure.
A durable power cable was designed, employing a combination structure of support blocks, guide rods, movable blocks, and cleaning cotton within an insulating protective sheath. The movable blocks drive the cleaning cotton to move along the cable surface to remove dust. Combined with rubber pads, it adapts to thermal expansion and contraction, while brackets and positioning blocks enhance its compressive strength.
It effectively cleans dust from the cable surface, reduces heat buildup, slows down insulation aging, maintains insulation performance, and improves cable durability and compressive strength.
Smart Images
Figure CN223898084U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of power cable technology, and specifically relates to a durable power cable. Background Technology
[0002] Power cables are cables used to transmit and distribute electrical energy. They are widely used in urban underground power grids, power plant lead-out lines, internal power supply in industrial and mining enterprises, and underwater power transmission lines across rivers and seas.
[0003] During long-term use, some power cables have their bottom ends in direct contact with the ground. When the cable is running, the electrical current generates heat, which attracts nearby dust, gradually causing a buildup of dust on the cable. This accumulated dust forms a heat-insulating layer on the cable surface, severely hindering heat dissipation and causing the cable's operating temperature to rise. Prolonged exposure to high temperatures not only accelerates the aging of the cable insulation layer and reduces its insulation performance, but may also lead to localized overheating, further shortening the cable's lifespan and increasing the risk of failure. Utility Model Content
[0004] The purpose of this invention is to provide a durable power cable that addresses the problem in existing cables where, during operation, the power cable generates heat, which attracts nearby dust, leading to a buildup of dust on the cable. This accumulated dust forms a heat-insulating layer on the cable surface, severely hindering heat dissipation and causing the cable's operating temperature to rise. Prolonged exposure to high temperatures not only accelerates the aging of the cable insulation layer and reduces its insulation performance but may also cause localized overheating, further shortening the cable's lifespan and increasing the risk of failure.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a durable power cable, comprising an insulating protective sleeve and a wire core assembled inside the insulating protective sleeve, with support blocks installed at both ends of the insulating protective sleeve, a guide rod connected between two of the support blocks, a movable block sleeved on the surface of the guide rod, a rubber pad attached to the inner sidewall of the support block, a cleaning cotton installed on the inner sidewall of the movable block, and a protrusion connected to the outer sidewall of one of the support blocks.
[0006] As a preferred embodiment of the durable power cable of this utility model, the through support block and the protrusion of the guide rod form a threaded connection.
[0007] As a preferred embodiment of the durable power cable of this invention, the guide rod and the support block are connected by a thread.
[0008] As a preferred embodiment of the durable power cable of this utility model, the rubber pad is made of nitrile rubber and the cleaning cotton is made of sponge.
[0009] As a preferred embodiment of the durable power cable of this utility model, the cleaning cotton forms a linear reciprocating motion with the insulating protective sleeve through the movable block and guide rod, and the cleaning cotton is in contact with the surface of the insulating protective sleeve.
[0010] As a preferred embodiment of the durable power cable of this utility model, the interior of the insulating protective sleeve is equipped with a "cross-shaped" bracket, and positioning blocks are installed inside both ends of the insulating protective sleeve, with a pressure-resistant rod connecting the two positioning blocks.
[0011] As a preferred embodiment of the durable power cable of this utility model, the bracket, positioning block and anti-pressure rod are made of aluminum alloy.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] This invention utilizes the cooperation between a movable block and cleaning cotton, combined with a guide rod design, to allow the movable block to move along the guide rod surface, thereby driving the cleaning cotton to effectively remove dust adhering to the surface of the power cable. This design reduces the impact of dust accumulation on heat dissipation, preventing the power cable from being in a high-temperature state for extended periods due to dust buildup, thus slowing down the aging rate of the cable insulation layer, maintaining its good insulation performance, and improving the durability of the power cable. Furthermore, the cooperation between the bracket, positioning block, and pressure-resistant rod further enhances the pressure resistance of the power cable. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;
[0016] Figure 2 This is a schematic diagram showing the disassembled structure of the power cable, bracket, positioning block, and anti-pressure rod of this utility model;
[0017] Figure 3 This is a schematic diagram of the connection structure between the support block, guide rod, movable block and guide rod of this utility model;
[0018] Figure 4 This utility model Figure 1 A magnified schematic diagram of the connection structure at point A in the diagram.
[0019] In the diagram: 1. Insulating protective sleeve; 2. Wire core; 3. Support block; 4. Guide rod; 5. Movable block; 6. Rubber pad; 7. Cleaning cotton; 8. Protrusion; 9. Bracket; 10. Positioning block; 11. Pressure-resistant rod. Detailed Implementation
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] Please see Figures 1-4 This utility model provides the following technical solution: a durable power cable, comprising an insulating protective sleeve 1 and a wire core 2 assembled inside the insulating protective sleeve 1. Support blocks 3 are installed at both ends of the insulating protective sleeve 1. The support blocks 3 are made of metal, and their surfaces are treated for corrosion and moisture resistance before painting. This allows the support blocks 3 to be suitable for use with power cables in different environments. A guide rod 4 connects two support blocks 3, and a movable block 5 is sleeved on the surface of the guide rod 4. A rubber pad 6 is attached to the inner wall of the support block 3, and a cleaning cotton 7 is installed on the inner wall of the movable block 5. A protrusion 8 is connected to the outer wall of one of the support blocks 3.
[0022] In a preferred embodiment, the guide rod 4 has a threaded connection between the through support block 3 and the protrusion 8.
[0023] In a preferred embodiment, the guide rod 4 and the support block 3 are connected by a thread.
[0024] In the preferred embodiment: the rubber pad 6 is made of nitrile rubber, and the cleaning cotton 7 is made of sponge.
[0025] In a preferred embodiment: the cleaning cotton 7 forms a linear reciprocating motion with the insulating protective sleeve 1 through the movable block 5 and the guide rod 4, and the cleaning cotton 7 is in contact with the surface of the insulating protective sleeve 1.
[0026] In a preferred embodiment: the interior of the insulating protective sleeve 1 is equipped with a cross-shaped bracket 9, and positioning blocks 10 are installed inside both ends of the insulating protective sleeve 1. A pressure-resistant rod 11 is connected between the two positioning blocks 10.
[0027] In a preferred embodiment, the bracket 9, the positioning block 10, and the anti-compression rod 11 are made of aluminum alloy.
[0028] Working Principle: First, power cables transmit electrical energy through conductors, while protective layers such as insulation, sheathing, and armor ensure safe and stable operation in various complex environments. During use, dust accumulates on the surface of power cables laid on the ground over time. A manually operated movable block 5 moves along the surface of the guide rod 4, subsequently moving the cleaning cotton 7 along the cable surface to wipe away the dust. This design reduces the impact of dust accumulation on heat dissipation, preventing the power cable from remaining at high temperatures due to dust buildup, thus slowing down the aging of the cable insulation, maintaining its good insulation performance, and improving the durability of the power cable.
[0029] Furthermore, if the cleaning cotton 7 is damaged, the guide rod 4 can be manually rotated to move it out of the protrusion 8, and at the same time, the guide rod 4 will also move out of the support block 3. Next, pull the guide rod 4 outwards and fix the movable block 5, thus removing the movable block 5 from the surface of the guide rod 4 for replacement of the cleaning cotton 7. After replacement, the movable block 5 is reassembled onto the guide rod 4, and the guide rod 4 is threadedly connected to the protrusion 8. The cleaning cotton 7 is made of flame-retardant sponge material.
[0030] In addition, the rubber pad 6 can accommodate the thermal expansion and contraction of the power cable, preventing the power cable from rubbing against the inner wall of the support block 3 due to thermal expansion and contraction, thus avoiding damage to the power cable. At the same time, the rubber pad 6 has the properties of high and low temperature resistance, which can prevent the power cable from melting due to temperature during operation.
[0031] Next, the two support blocks 3 maintain a certain distance between the power cable and the ground, increasing the heat dissipation of the power cable. In addition, the power cable is internally equipped with a bracket 9, a positioning block 10, and a pressure-resistant rod 11, the cooperation of which further enhances the pressure resistance of the power cable.
[0032] Finally, the size of the movable block 5 is smaller than the size of the support block 3, which facilitates the movement of the movable block 5.
[0033] It is important to note that movable block 5 needs to be secured. This can be achieved by tightening bolts to prevent it from shifting and affecting the normal operation of the power cable.
[0034] To further explain: the rubber pad 6 is connected to both ends of the power cable, and the support block 3 is connected to the rubber pad 6, so the support block 3 can be installed at both ends of the power cable.
[0035] Finally, it should be noted that due to the excessive length of the power cable, the above-mentioned technical measures require multiple supports to be installed on the power cable to avoid the two support blocks 3 being directly designed at both ends of the power cable, causing the power cable to be subjected to tension and contact with the ground.
[0036] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are 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 durable power cable, comprising an insulating sheath (1) and a conductor (2) assembled inside the insulating sheath (1), characterized in that: The insulating protective sleeve (1) is equipped with support blocks (3) at both ends, and a guide rod (4) is connected between the two support blocks (3). A movable block (5) is sleeved on the surface of the guide rod (4). The inner wall of the support block (3) is fitted with a rubber pad (6), the inner wall of the movable block (5) is fitted with a cleaning cotton (7), and one of the outer walls of the support block (3) is connected with a protrusion (8).
2. The durable power cable according to claim 1, characterized in that: The guide rod (4) has a threaded connection between the through support block (3) and the protrusion (8).
3. A durable power cable according to claim 1, characterized in that: The guide rod (4) and the support block (3) are connected by a thread.
4. A durable power cable according to claim 1, characterized in that: The rubber pad (6) is made of nitrile rubber, and the cleaning cotton (7) is made of sponge.
5. A durable power cable according to claim 1, characterized in that: The cleaning cotton (7) forms a linear reciprocating motion with the insulating protective sleeve (1) through the movable block (5) and the guide rod (4), and the cleaning cotton (7) is in contact with the surface of the insulating protective sleeve (1).
6. A durable power cable according to claim 1, characterized in that: The insulating protective sleeve (1) is equipped with a cross-shaped bracket (9) inside. Positioning blocks (10) are installed inside both ends of the insulating protective sleeve (1). A pressure-resistant rod (11) is connected between the two positioning blocks (10).
7. A durable power cable according to claim 6, characterized in that: The bracket (9), positioning block (10) and anti-compression rod (11) are made of aluminum alloy.