35kV and below energy-saving, waterproof, rat-proof and ant-proof polypropylene insulation low-voltage power cable

Abstract

The invention discloses a 35kV and below energy-saving waterproof rat-proof and termite-proof polypropylene insulation low-voltage power cable, and relates to the technical field of power cables, the power cable comprises three groups of cable cores, the outer surfaces of the three groups of cable cores are provided with compression-resistant assemblies, and the outer sides of the compression-resistant assemblies are provided with rat-proof and termite-proof assemblies. An annular elastic ring is stressed to deform, so that a triangular block moves towards one side of the cable core, and gas enters an arc-shaped air bag for expansion, so that an external force buffering effect is achieved, the cable core is prevented from being damaged due to extrusion, distortion and the like, vibration and shaking of the cable under the action of external force are reduced, and the service life of the cable is prolonged. The stability of the internal structure of the cable is maintained, so that the operation stability of the cable is improved, the service life of the cable is further prolonged, the cable replacement and maintenance cost caused by damage of the cable core is reduced, meanwhile, the arc-shaped shaft drives the abutting plate to synchronously rotate, the abutting plate is attached to the surface of the cable core, and the stability of the cable core in the cable is further enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of power cables, in particular to a 35 kV and below energy-saving, waterproof, rat and ant-proof polypropylene insulated low-voltage power cable. Background Art

[0002] Cables are a common power transmission device used in real life. They enable long-distance power transmission, bringing great convenience to people's work and life. With economic development, the development of taller buildings, the increase in various electrical facilities, and the accelerated development of power grid construction, fire hazards have also increased, increasing the risk of fire.

[0003] Existing cables usually have multiple layers of protective layers wrapped around the outside of the cable core to protect the cable core. This protective effect is relatively simple and has certain limitations. When the cable is squeezed by the outside for a long time, the internal cable core will be deformed and twisted, which can easily damage the cable core and require cable replacement, increasing maintenance costs and reducing the stability of the cable. Therefore, an energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable of 35kV and below is proposed. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a 35kV and below energy-saving, waterproof, rat- and ant-proof polypropylene insulated low-voltage power cable to solve the technical problem raised in the above background that the cable is easily deformed and twisted when squeezed.

[0005] To achieve the above object, the present invention provides the following technical solution: an energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable of 35kV and below, comprising a cable core, wherein the cable core is provided in three groups, and the outer surfaces of the three groups of cable cores are provided with pressure-resistant components, and the outer sides of the pressure-resistant components are provided with rat-proof and ant-proof components;

[0006] The compression-resistant component includes an annular elastic ring on the outside of the cable core, and the circular axis array on the inner wall of the annular elastic ring has three groups of triangular blocks. The three groups of triangular blocks are slidably connected to extrusion rods on both sides, and the end of the extrusion rod away from the triangular block is slidably connected to the air storage cylinder, and the end of the air storage cylinder away from the extrusion rod is connected to an arc-shaped air bag. The middle of the triangular block is penetrated and slidably connected to a fixed rod, and the end of the fixed rod away from the triangular block is fixed with a connecting rod, and the inside of the fixed rod is slidably connected to a telescopic rod, a square block is fixed on the top of the telescopic rod, and a base rod is fixed inside the square block. The surface of the base rod is rotatably connected to two groups of arc shafts that penetrate the surface of the fixed rod, and the end of the arc shaft away from the base rod is fixed with an abutment plate.

[0007] As an optimal technical solution, a filling layer is provided between the annular elastic ring and the three groups of cable cores.

[0008] As an optimal technical solution, the surface of the annular elastic ring is covered with a waterproof layer, the surface of the waterproof layer is covered with a heat insulation layer, the surface of the heat insulation layer is covered with an insulating layer, and the surface of the insulating layer is covered with a pressure-resistant and wear-resistant layer.

[0009] As an optimal technical solution, sliding grooves are provided on both sides of the triangular block, the extrusion rod is arranged inside the sliding groove for sliding, and the arc-shaped airbag fits tightly to the cable core.

[0010] As a preferred technical solution, the three groups of cable cores are fixed by arranging elastic plates, and the elastic plates and the connecting rods are fixed by long rods.

[0011] As an optimal technical solution, a plurality of grooves are provided in the elastic plate, the fixing rod passes through the grooves inside the elastic plate, and the bottom end of the telescopic rod is attached to the bottom end of the inner wall of the triangular block.

[0012] As a preferred technical solution, the rat and ant-proof component includes a spiral steel sheet attached between the insulating layer and the pressure-resistant and wear-resistant layer, and a plurality of drug storage grooves are opened on the surface of the spiral steel sheet.

[0013] As an optimal technical solution, the inner wall of the pressure-resistant and wear-resistant layer is provided with multiple groups of annular through grooves located around the drug storage tank, and the multiple groups of annular through grooves are connected through connecting grooves.

[0014] In summary, the present invention mainly has the following beneficial effects:

[0015] The present invention causes the annular elastic ring to deform under force, causing the triangular block to move toward one side of the cable core, allowing gas to enter the arc-shaped airbag and expand, thereby achieving a buffering effect against external forces, preventing the cable core from being damaged by squeezing, twisting, etc., while reducing the vibration and shaking of the cable when subjected to external forces, maintaining the stability of the internal structure of the cable, thereby improving the operating stability of the cable, further extending the service life of the cable, and reducing the cable replacement and maintenance costs caused by damage to the cable core. At the same time, the arc-shaped shaft drives the abutment plate to rotate synchronously, so that the abutment plate fits the surface of the cable core, further enhancing the stability of the cable core inside the cable.

[0016] The present invention can make the cable straighter during the laying process by arranging spiral steel sheets, reduce bending and twisting, thereby facilitating construction and installation, and can also significantly improve the strength and rigidity of the cable's compression and wear-resistant layer, making the cable more resistant to external pressure and wear. By adding tablets in the drug storage tank, irritating odors can be released to prevent the cable from being bitten by rats and ants underground. At the same time, the hard surface and edges of the spiral steel sheets are not conducive to being bitten by rats and ants, and combined with the drugs, a double protection effect is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall components of the present invention;

[0018] Figure 2 is a schematic diagram of the internal components of the cable of the present invention;

[0019] Figure 3 It is a front view of the inner component of the cable of the present invention;

[0020] Figure 4 is a schematic diagram of a compression-resistant component of the present invention;

[0021] Figure 5 It is a schematic diagram of the internal components of the fixing rod of the present invention;

[0022] Figure 6 A schematic diagram of a square block of the present invention;

[0023] Figure 7 It is a cross-sectional view of the compression and wear-resistant layer of the present invention.

[0024] In the figure: 100, cable core; 110, waterproof layer; 120, thermal insulation layer; 130, insulation layer; 140, pressure-resistant and wear-resistant layer;

[0025] 200, compression-resistant assembly; 210, annular elastic ring; 220, triangular block; 221, slideway; 230, extrusion rod; 240, air reservoir; 250, arc-shaped airbag; 260, fixing rod; 270, connecting rod; 271, long rod; 280, elastic plate; 290, telescopic rod; 2910, square block; 2920, base rod; 2930, arc-shaped shaft; 2940, abutment plate;

[0026] 300. Anti-rat and ant component; 310. Spiral steel sheet; 320. Drug storage tank; 330. Annular through groove; 340. Connecting groove. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0028] The following describes an embodiment of the present invention based on its overall structure.

[0029] A 35kV and below energy-saving waterproof and rat-proof polypropylene insulated low-voltage power cable, such as Figure 1-7 As shown, it includes a cable core 100, and the cable core 100 is provided with three groups. The outer surfaces of the three groups of cable cores 100 are provided with pressure-resistant components 200, and the outer sides of the pressure-resistant components 200 are provided with anti-rat and ant components 300;

[0030] The compression component 200 includes an annular elastic ring 210 on the outside of the cable core 100. The inner wall of the annular elastic ring 210 is arranged with three sets of triangular blocks 220 in a circular axis array. The three sets of triangular blocks 220 are slidably connected to the sides of the extrusion rods 230. The end of the extrusion rods 230 away from the triangular blocks 220 is slidably connected to the air storage cylinder 240. The end of the air storage cylinder 240 away from the extrusion rods 230 is connected to the arc-shaped air bag 250. The middle of the triangular block 220 is penetrated and slidably connected to the fixing rod 26 0, a connecting rod 270 is fixed to the end of the fixed rod 260 away from the triangular block 220, and a telescopic rod 290 is slidably connected inside the fixed rod 260. A square block 2910 is fixed to the top of the telescopic rod 290, and a base rod 2920 is fixed inside the square block 2910. Two groups of arc-shaped shafts 2930 that pass through the surface of the fixed rod 260 are rotatably connected on the surface of the base rod 2920, and an abutment plate 2940 is fixed to the end of the arc-shaped shaft 2930 away from the base rod 2920.

[0031] When the cable is squeezed by the outside world, an external force is applied to the annular elastic ring 210, causing the annular elastic ring 210 to deform and move the triangular block 220 toward the side of the cable core 100. The movement of the triangular block 220 compresses the squeezing rod 230, causing the squeezing rod 230 to compress the gas inside the gas storage cylinder 240, and then the gas enters the arc-shaped air bag 250, and the arc-shaped air bag 250 expands, thereby achieving a buffering effect against external forces, preventing the cable core 100 from being damaged by squeezing, twisting, etc., and at the same time reducing the vibration and shaking of the cable when subjected to external forces, thereby protecting the cable from damage. The stability of the internal structure of the cable is maintained, thereby improving the operating stability of the cable, further extending the service life of the cable, and reducing the cable replacement and maintenance costs caused by damage to the cable core 100. At the same time, the triangular block 220 will squeeze the telescopic rod 290 when moving, so that the telescopic rod 290 drives the square block 2910 to move, and the arc shaft 2950 drives the abutment plate 2960 to rotate through the base rod 2920 inside the square block 2910, so that the abutment plate 2960 is attached to the surface of the cable core 100, further enhancing the stability of the cable core 100 inside the cable.

[0032] Please refer to Figure 2 and Figure 2 A filling layer is provided between the annular elastic ring 210 and the three groups of cable cores 100. The surface of the annular elastic ring 210 is covered with a waterproof layer 110. The surface of the waterproof layer 110 is covered with a thermal insulation layer 120. The surface of the thermal insulation layer 120 is covered with an insulating layer 130. The surface of the insulating layer 130 is covered with a pressure-resistant and wear-resistant layer 140.

[0033] By setting up the waterproof layer 110, it is possible to effectively prevent the intrusion into the interior of the cable and protect the cable from the influence of moisture, thereby extending the service life of the cable. By setting up the thermal insulation layer 120, it is possible to reduce the heat generated by the cable during operation from being transferred outward, and at the same time prevent the high temperature of the external environment from causing adverse effects on the interior of the cable. By setting up the insulating layer 130, the safety of the cable can be better protected, thereby ensuring more efficient transmission of electrical energy. By setting up the pressure-resistant and wear-resistant layer 140, the mechanical strength and durability of the cable can be effectively improved.

[0034] Please refer to Figures 3 to 6 , slide grooves 221 are opened on both sides of the triangular block 220, the extrusion rod 230 is arranged inside the slide groove 221 for sliding, the arc-shaped airbag 250 is tightly fitted to the cable core 100, and the three groups of cable cores 100 are fixed by setting an elastic plate 280. The elastic plate 280 and the connecting rod 270 are fixed by a long rod 271. There are multiple groups of grooves in the elastic plate 280. The fixing rod 260 passes through the groove inside the elastic plate 280, and the bottom end of the telescopic rod 290 is fitted to the bottom end of the inner wall of the triangular block 220.

[0035] The cooperation between the sliding groove 221 and the extrusion rod 230 enables the triangular block 220 to better exert a force on the extrusion rod 230 when being extruded.

[0036] Please refer to Figure 2 and Figure 7 The rat and ant-proof component 300 includes a spiral steel sheet 310 attached between the insulating layer 130 and the pressure-resistant and wear-resistant layer 140. Several groups of drug storage grooves 320 are opened on the surface of the spiral steel sheet 310. The inner wall of the pressure-resistant and wear-resistant layer 140 is opened with multiple groups of annular grooves 330 located around the drug storage grooves 320. The multiple groups of annular grooves 330 are connected by connecting grooves 340.

[0037] By providing the spiral steel sheet 310, the cable can be straightened during the laying process, reducing bending and twisting, thereby facilitating construction and installation. At the same time, it can also significantly improve the strength and rigidity of the cable's compression and wear-resistant layer 140, making the cable more resistant to external pressure and wear. By adding tablets to the drug storage tank 320, a pungent odor can be released to prevent the cable from being bitten by rats and ants underground. At the same time, the hard surface and edges of the spiral steel sheet 310 are not conducive to being bitten by rats and ants, and combined with the drugs, a double protection effect is formed.

[0038] During use, when the cable is squeezed, an external force is applied to the annular elastic ring 210, causing the annular elastic ring 210 to deform and move the triangular block 220 toward the side of the cable core 100, so that the gas enters the arc-shaped airbag 250 and expands, thereby achieving a buffering effect on the external force, preventing the cable core 100 from being damaged by squeezing, twisting, etc., and at the same time reducing the vibration and shaking of the cable when subjected to external force, maintaining the stability of the internal structure of the cable, thereby improving the operating stability of the cable, further extending the service life of the cable, and reducing the cable replacement and maintenance costs caused by damage to the cable core 100. At the same time, the arc shaft 2950 drives the abutment plate 2960 to rotate synchronously, so that the abutment plate 2960 fits against The surface of the cable core 100 further enhances the stability of the cable core 100 inside the cable. By arranging the spiral steel sheet 310, the cable can be straighter during the laying process, reducing bending and twisting, thereby facilitating construction and installation. At the same time, it can also significantly improve the strength and rigidity of the cable's compression and wear-resistant layer 140, making the cable more resistant to external pressure and wear. By adding tablets in the drug storage tank 320, a pungent odor can be released to prevent the cable from being bitten by rats and ants underground. At the same time, the hard surface and edge of the spiral steel sheet 310 are not conducive to being bitten by rats and ants, and combined with the drugs, a double protection effect is formed. The parts not involved in the device are the same as the existing technology or can be implemented using the existing technology.

[0039] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A 35kV and below energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable, comprising a cable core (100), characterized in that: The cable cores (100) are provided in three groups, and the outer surfaces of the three groups of cable cores (100) are provided with pressure-resistant components (200), and the outer sides of the pressure-resistant components (200) are provided with anti-rat and ant components (300); The compression-resistant assembly (200) comprises an annular elastic ring (210) outside the cable core (100), and the inner wall of the annular elastic ring (210) is provided with three groups of triangular blocks (220) in a circular axis array. Both sides of the three groups of triangular blocks (220) are slidably connected to an extrusion rod (230), and one end of the extrusion rod (230) away from the triangular block (220) is slidably connected to an air storage cylinder (240), and one end of the air storage cylinder (240) away from the extrusion rod (230) is connected to an arc-shaped air bag (250). The middle of the triangular block (220) is penetrated and slidably connected to a fixing rod (26 0), a connecting rod (270) is fixed to one end of the fixed rod (260) away from the triangular block (220), and a telescopic rod (290) is slidably connected inside the fixed rod (260), a square block (2910) is fixed to the top of the telescopic rod (290), a base rod (2920) is fixed inside the square block (2910), and two groups of arc shafts (2930) that pass through the surface of the fixed rod (260) are rotatably connected on the surface of the base rod (2920), and an abutment plate (2940) is fixed to one end of the arc shaft (2930) away from the base rod (2920).

2. The energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable of 35 kV and below according to claim 1, characterized in that: A filling layer is provided between the annular elastic ring (210) and the three groups of cable cores (100).

3. The energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable of 35 kV and below according to claim 1, characterized in that: The surface of the annular elastic ring (210) is coated with a waterproof layer (110), the surface of the waterproof layer (110) is coated with a heat insulation layer (120), the surface of the heat insulation layer (120) is coated with an insulating layer (130), and the surface of the insulating layer (130) is coated with a pressure-resistant and wear-resistant layer (140).

4. The energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable of 35 kV and below according to claim 1, characterized in that: Slide grooves (221) are provided on both sides of the triangular block (220), the extrusion rod (230) is arranged inside the slide groove (221) for sliding, and the arc-shaped air bag (250) is tightly fitted to the cable core (100).

5. The energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable of 35 kV and below according to claim 1, characterized in that: The three groups of cable cores (100) are fixed by arranging elastic plates (280), and the elastic plates (280) and the connecting rods (270) are fixed by long rods (271).

6. The energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable of 35 kV and below according to claim 5, characterized in that: The elastic plate (280) is provided with a plurality of grooves, the fixing rod (260) passes through the grooves inside the elastic plate (280), and the bottom end of the telescopic rod (290) is attached to the bottom end of the inner wall of the triangular block (220).

7. The energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable of 35 kV and below according to claim 1, characterized in that: The rat and ant-proof component (300) comprises a spiral steel sheet (310) attached between an insulating layer (130) and a pressure-resistant and wear-resistant layer (140), and a plurality of groups of drug storage grooves (320) are provided on the surface of the spiral steel sheet (310).

8. The energy-saving, waterproof, rat-proof and ant-proof polypropylene insulated low-voltage power cable of 35 kV and below according to claim 7, characterized in that: The inner wall of the pressure-resistant and wear-resistant layer (140) is provided with a plurality of groups of annular through grooves (330) located around the drug storage tank (320), and the plurality of groups of annular through grooves (330) are connected via connecting grooves (340).

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