Insulated high-voltage power cable

Abstract

The utility model discloses an insulating high-voltage power cable, which relates to the technical field of insulating high-voltage power cables, and comprises a cable core, specifically, the cable core is cylindrical, the outer side wall of the cable core is fixedly connected with a protective sleeve, the protective sleeve is annular, the inner side wall of the protective sleeve is tightly attached to the outer side wall of the cable core, and the outer side wall of the protective sleeve is fixedly connected with the outer side wall of the cable core. A first insulation sleeve is arranged on the outer side wall of the protection sleeve, the first insulation sleeve is made of mica and is in a circular ring shape, the small diameter of the first insulation sleeve is consistent with the large diameter of the protection sleeve, a buffering sleeve is fixedly connected to the outer end of the first insulation sleeve, the inner side wall of the buffering sleeve is tightly attached to the outer side wall of the first insulation sleeve, and a buffering soft rod is arranged in the buffering sleeve. According to the utility model, the structure is simple, external pressure resistance and insulation can be effectively realized, a user can touch the cable at ease, the current-carrying capacity of the cable can be prevented from being reduced due to too low temperature in winter, and the cable is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of insulated high-voltage power cables, and specifically relates to an insulated high-voltage power cable. Background Technique

[0002] The wire and cable industry is the second largest industry in China after the automotive industry, with the product variety satisfaction rate and domestic market share both exceeding 90%. Worldwide, the total output value of China's wire and cables has exceeded that of the United States, making China the world's largest wire and cable producer. Along with the rapid development of China's wire and cable industry, the number of newly added enterprises has been continuously increasing, and the overall technical level of the industry has been greatly improved. Power cables are used to transmit and distribute electrical energy. Power cables are commonly used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and undersea power transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are used to transmit and distribute in the main lines of the power system.

[0003] An insulated high-voltage power cable disclosed in the Chinese utility model patent application publication specification CN217239083U, although it solves the problem that the surface of the cable is easily damaged, still has the following disadvantages: First, the insulation effect of the above-mentioned insulated high-voltage power cable is not good, which will cause the user's body to get an electric shock when the user is winding or installing, causing harm to the user's body; Second, in the severe cold weather in winter in the north, often due to the too low temperature, the current-carrying capacity of the cable becomes smaller, resulting in unstable voltage and current and frequent power outages, which is not conducive to use. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides an insulated high-voltage power cable, which solves the problems raised in the above background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: An insulated high-voltage power cable includes a cable core. The cable core is cylindrical. A protective sleeve is fixedly connected to the outer side wall of the cable core. The protective sleeve is circular. The inner side wall of the protective sleeve is in close contact with the outer side wall of the cable core. A first insulating sleeve is provided on the outer side wall of the protective sleeve. The material of the first insulating sleeve is mica. The first insulating sleeve is circular and the small diameter is the same as the large diameter of the protective sleeve. A buffer sleeve is fixedly connected to the outer end of the first insulating sleeve. The inner side wall of the buffer sleeve is in close contact with the outer side wall of the first insulating sleeve.

[0008] Optionally, a buffer soft rod is provided inside the buffer sleeve. The buffer soft rod is cylindrical, and there are several buffer soft rods which are distributed in a circumferential array in the buffer sleeve.

[0009] Optionally, the center of the buffer sleeve coincides with the center of the cable core. The material of the buffer sleeve is polyethylene, and the material of the buffer soft rod is polystyrene. An anti-pressure sleeve is fixedly connected to the outer end of the buffer sleeve.

[0010] Optionally, the anti-pressure sleeve is annular. The inner side wall of the anti-pressure sleeve is in close contact with the outer side wall of the buffer sleeve. The thickness of the anti-pressure sleeve is one-third of that of the buffer sleeve, and the material of the anti-pressure sleeve is a metal protective layer.

[0011] Optionally, a heat-insulating sleeve is fixedly connected to the outer end of the anti-pressure sleeve. The material of the heat-insulating sleeve is cross-linked polyethylene. The heat-insulating sleeve is annular and the small diameter is the same as the large diameter of the anti-pressure sleeve. A second insulating sleeve is fixedly connected to the outer end of the heat-insulating sleeve.

[0012] Optionally, the material of the second insulating sleeve is rubber. A waterproof and wear-resistant sleeve is fixedly connected to the outer end of the second insulating sleeve. Both the second insulating sleeve and the waterproof and wear-resistant sleeve are annular. The thickness of the second insulating sleeve is twice that of the first insulating sleeve.

[0013] (III) Beneficial effects

[0014] The present utility model provides an insulated high-voltage power cable, which has the following beneficial effects:

[0015] 1. For this insulated high-voltage power cable, through the setting that the material of the buffer sleeve is polyethylene and the material of the buffer soft rod is polystyrene, the insulated high-voltage power cable has the effect of reducing the external impact force while providing insulation for the outside world. Through the combined setting of the first insulating sleeve and the buffer sleeve, during the use process, the current inside the cable core will not be transmitted to the outside, thus playing a role in preventing the user from getting an electric shock when installing and using the cable, achieving the purpose of protecting the personal safety of the user.

[0016] 2. For this insulated high-voltage power cable, through the setting that a waterproof and wear-resistant sleeve is fixedly connected to the outer end of the second insulating sleeve, the insulated high-voltage power cable has the effect of preventing the cable from being damaged and leaking electricity due to friction inside. Through the combined setting of the second insulating sleeve and the heat-insulating sleeve, during the use process, the cable core can be used normally in cold winter weather, and while protecting the heat-insulating sleeve from damage, the cable can be insulated again, thus playing a role in enabling the cable core to be used normally in winter while improving the external insulation. Description of the drawings

[0017] Figure 1 It is a three-dimensional sectional view schematic diagram of the cable of the present utility model;

[0018] Figure 2 This is the front sectional view schematic diagram of the cable of the present utility model;

[0019] Figure 3 For the present utility model Figure 1 The enlarged schematic diagram of part A in it;

[0020] Figure 4 For the present utility model Figure 2 The enlarged schematic diagram of part B in it.

[0021] In the figure: 1, cable core; 2, protective sleeve; 3, first insulating sleeve; 4, buffer sleeve; 5, buffer soft rod; 6, compression-resistant sleeve; 7, heat-insulating sleeve; 8, second insulating sleeve; 9, waterproof and wear-resistant sleeve. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] Embodiment 1:

[0024] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: an insulated high-voltage power cable, including a cable core 1. The cable core 1 is cylindrical. A protective sleeve 2 is fixedly connected to the outer side wall of the cable core 1. The protective sleeve 2 is annular. The inner side wall of the protective sleeve 2 is in close contact with the outer side wall of the cable core 1. A first insulating sleeve 3 is provided on the outer side wall of the protective sleeve 2. The material of the first insulating sleeve 3 is mica. The first insulating sleeve 3 is annular and the small diameter is the same as the large diameter of the protective sleeve 2. A buffer sleeve 4 is fixedly connected to the outer end of the first insulating sleeve 3. The inner side wall of the buffer sleeve 4 is in close contact with the outer side wall of the first insulating sleeve 3. A buffer soft rod 5 is provided inside the buffer sleeve 4. The buffer soft rod 5 is cylindrical. There are several buffer soft rods 5 and they are arranged in a circumferential array in the buffer sleeve 4. The center of the buffer sleeve 4 coincides with the center of the cable core 1. The material of the buffer sleeve 4 is polyethylene. The material of the buffer soft rod 5 is polystyrene. A compression-resistant sleeve 6 is fixedly connected to the outer end of the buffer sleeve 4.

[0025] During use, the insulation effect of the above-mentioned insulated high-voltage power cable is not good, which may cause the user to get an electric shock to the body when winding or installing, and the user's body will be harmed. Therefore, there is an insulated high-voltage power cable. When the power cable is in use, the cable core 1 can be prevented from being damaged through the protective sleeve 2. Through the cooperative setting of the first insulating sleeve 3 and the buffer sleeve 4, the current inside the cable core 1 can be prevented from transmitting outward, which can protect the personal safety of the user during installation and winding, and prevent the user from being harmed due to electric shock to the body. Through the cooperative setting of the buffer sleeve 4 and the buffer soft rod 5, the impact force caused by the outside world on the cable core 1 can be reduced, and the service life of the cable core 1 can be greatly improved.

[0026] Embodiment 2:

[0027] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: an insulated high-voltage power cable, the pressure-resistant sleeve 6 is circular, the inner side wall of the pressure-resistant sleeve 6 is closely attached to the outer side wall of the buffer sleeve 4, the thickness of the pressure-resistant sleeve 6 is one-third of that of the buffer sleeve 4, the material of the pressure-resistant sleeve 6 is a metal protective layer, the outer end of the pressure-resistant sleeve 6 is fixedly connected with a heat-insulating sleeve 7, the material of the heat-insulating sleeve 7 is cross-linked polyethylene, the heat-insulating sleeve 7 is circular and the small diameter is the same as the large diameter of the pressure-resistant sleeve 6, the outer end of the heat-insulating sleeve 7 is fixedly connected with a second insulating sleeve 8, the material of the second insulating sleeve 8 is rubber, the outer end of the second insulating sleeve 8 is fixedly connected with a waterproof and wear-resistant sleeve 9, both the second insulating sleeve 8 and the waterproof and wear-resistant sleeve 9 are circular, and the thickness of the second insulating sleeve 8 is twice that of the first insulating sleeve 3.

[0028] During use, in the severe cold weather in winter in the north, often due to the too low temperature, the current-carrying capacity of the cable becomes smaller, resulting in unstable voltage and current, and frequent power outages, which is not conducive to use. Therefore, there is an insulated high-voltage power cable. When in use, through the setting that the material of the pressure-resistant sleeve 6 is a metal protective layer, the overall hardness of the cable can be improved, thereby protecting the cable core 1 from being damaged and enhancing the service life of the cable. Through the setting of the heat-insulating sleeve 7, the cable core 1 can be prevented from being affected by the outside low temperature and the current-carrying capacity of the cable core 1 can be stabilized. Through the setting that the material of the second insulating sleeve 8 is rubber, the heat-insulating sleeve 7 can be protected, and at the same time, the current inside the cable core 1 can be further insulated to prevent the outside user from getting an electric shock, and the impact force received by the cable core 1 can be reduced. Through the setting of the waterproof and wear-resistant sleeve 9, when the cable is wound or rubbed against the ground, it will not be damaged, avoiding problems such as electric leakage or inability to use.

[0029] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. An insulated high-voltage power cable, comprising a cable core (1), characterized in that: The cable core (1) is cylindrical. A protective sleeve (2) is fixedly connected to the outer side wall of the cable core (1). The protective sleeve (2) is annular. The inner side wall of the protective sleeve (2) is in close contact with the outer side wall of the cable core (1). A first insulating sleeve (3) is provided on the outer side wall of the protective sleeve (2). The material of the first insulating sleeve (3) is mica. The first insulating sleeve (3) is annular and has the same minor diameter as the major diameter of the protective sleeve (2). A buffer sleeve (4) is fixedly connected to the outer end of the first insulating sleeve (3). The inner side wall of the buffer sleeve (4) is in close contact with the outer side wall of the first insulating sleeve (3).

2. An insulated high-voltage power cable according to claim 1, characterized in that: A buffer soft rod (5) is provided inside the buffer sleeve (4). The buffer soft rod (5) is cylindrical. There are several buffer soft rods (5) and they are distributed in a circumferential array in the buffer sleeve (4).

3. An insulated high-voltage power cable according to claim 2, characterized in that: The center of the buffer sleeve (4) coincides with the center of the cable core (1). The material of the buffer sleeve (4) is polyethylene. The material of the buffer soft rod (5) is polystyrene. A compression-resistant sleeve (6) is fixedly connected to the outer end of the buffer sleeve (4).

4. An insulated high-voltage power cable according to claim 3, characterized in that: The compression-resistant sleeve (6) is annular. The inner side wall of the compression-resistant sleeve (6) is in close contact with the outer side wall of the buffer sleeve (4). The thickness of the compression-resistant sleeve (6) is one-third of that of the buffer sleeve (4). The material of the compression-resistant sleeve (6) is a metal protective layer.

5. An insulated high-voltage power cable according to claim 4, characterized in that: A heat-insulating sleeve (7) is fixedly connected to the outer end of the compression-resistant sleeve (6). The material of the heat-insulating sleeve (7) is cross-linked polyethylene. The heat-insulating sleeve (7) is annular and has the same minor diameter as the major diameter of the compression-resistant sleeve (6). A second insulating sleeve (8) is fixedly connected to the outer end of the heat-insulating sleeve (7).

6. An insulated high-voltage power cable according to claim 5, characterized in that: The material of the second insulating sleeve (8) is rubber. A waterproof and wear-resistant sleeve (9) is fixedly connected to the outer end of the second insulating sleeve (8). Both the second insulating sleeve (8) and the waterproof and wear-resistant sleeve (9) are annular. The thickness of the second insulating sleeve (8) is twice that of the first insulating sleeve (3).

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