Self-temperature-control heat-tracing overhead insulated cable

Abstract

The utility model provides an automatic temperature control heat tracing overhead insulated cable, which comprises an insulated cable core, an automatic temperature control heat tracing reinforced core layer is arranged outside the insulated cable core, and the automatic temperature control heat tracing reinforced core layer comprises an automatic temperature control heat tracing belt with an automatic temperature control function. According to the self-temperature-control heat-tracing overhead insulated cable, the self-temperature-control heat-tracing reinforced core layer with the self-temperature-control heat-tracing tape is arranged outside the insulated cable core, the self-temperature-control heat-tracing tape can sense the ambient temperature in real time, the formation of an ice layer or frost is prevented by automatically adjusting the heating power, the cable load and the power loss are effectively reduced, and the service life of the cable is prolonged. The reliability and the stability of the cable in extremely cold weather are improved, the automatic temperature control heat tracing band has an automatic temperature control function, the heating power can be adjusted according to actual needs, the energy consumption is reduced, and the energy efficiency is improved; the self-temperature-control heat-tracing reinforced core layer provides comprehensive protection for the cable, so that the conductivity of the cable is ensured, and the stable work of the cable in a severe environment is also ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wires and cables, and in particular to a self-controlling temperature tracing heating overhead insulated cable. Background Art

[0002] Overhead wires are the main components of the power transmission system. They are made of conductors such as aluminum, copper or alloys and are often used for power transmission and distribution. Overhead wires have high voltage carrying capacity, can reduce current and reduce power loss. However, existing conventional overhead wires have two major problems in extremely cold weather: first, the low temperature resistance is poor, which is manifested in a significant decrease in electrical conductivity, resulting in reduced current conduction efficiency, affecting the stability and efficiency of power transmission; second, cold wave weather is prone to power outages. This is because the humidity in the air condenses on the surface of the wire to form ice or frost, which increases the load on the wire, resulting in additional resistance and power loss, and may cause the wire to break. Utility Model Content

[0003] In order to solve at least one aspect of the above problems, the utility model provides a self-controlling temperature tracing overhead insulated cable, including an insulating cable core, a self-controlling temperature tracing reinforcing core layer is arranged outside the insulating cable core, and the self-controlling temperature tracing reinforcing core layer includes a self-controlling temperature tracing belt with automatic temperature control function.

[0004] Optionally, the self-controlling temperature heating reinforcement core layer further includes a galvanized steel pipe sleeved outside the self-controlling temperature heating belt.

[0005] Optionally, the self-controlling temperature tracing reinforcing core layer further includes galvanized steel wires arranged outside the galvanized steel pipe.

[0006] Optionally, there are multiple insulating cable cores.

[0007] Optionally, the self-controlling temperature tracing and strengthening core layer is located between two or more adjacent insulating cable cores.

[0008] Optionally, the insulating cable core comprises a conductor, an inner shielding layer, an insulating layer and an insulating shielding layer which are sequentially arranged from the inside to the outside, and the self-controlling temperature heating reinforcing core layer is arranged outside the insulating shielding layer.

[0009] Optionally, the conductor is made of high-conductivity aluminum alloy.

[0010] Optionally, there are multiple conductors.

[0011] Optionally, the self-controlling temperature heating belt is made of semi-conductive plastic.

[0012] Optionally, the composition of the semiconductive plastic includes conductive carbon black and a polymer.

[0013] Compared with the prior art, the self-controlling temperature heating overhead insulated cable in the utility model is provided with a self-controlling temperature heating reinforced core layer with a self-controlling temperature heating belt outside the insulating cable core. The self-controlling temperature heating belt can sense the ambient temperature in real time, and prevent the formation of ice or frost by automatically adjusting the heating power, thereby effectively reducing the cable load and power loss, and improving the reliability and stability of the cable in extremely cold weather. The self-controlling temperature heating belt has an automatic temperature control function, and can adjust the heating power according to actual needs, reduce energy consumption, and improve energy efficiency; the self-controlling temperature heating reinforced core layer provides comprehensive protection for the cable, which not only ensures the conductive performance of the cable, but also ensures the stable operation of the cable in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A cross-sectional view of a self-controlling temperature tracing overhead insulated cable according to an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of a self-controlled temperature tracing and reinforcing core layer according to an embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of a self-controlling temperature tracing overhead insulated cable according to an embodiment of the utility model.

[0017] Description of reference numerals:

[0018] 1. Insulated cable core; 11. Conductor; 12. Inner shielding layer; 13. Insulating layer; 14. Insulating shielding layer; 2. Self-controlling temperature heating reinforcement core layer; 21. Self-controlling temperature heating belt; 22. Galvanized steel pipe; 23. Galvanized steel wire. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0022] The utility model embodiment provides a self-controlling temperature tracing overhead insulated cable, combined with Figure 1 , Figure 2 , Figure 3As shown, it comprises an insulating cable core 1, and a self-controlling temperature heating reinforcing core layer 2 is arranged outside the insulating cable core 1. The self-controlling temperature heating reinforcing core layer 2 comprises a self-controlling temperature heating belt 21 with automatic temperature control function.

[0023] Among them, the insulating cable core 1 is the core part of the cable, which is used to carry current and isolate the external environment. The insulating cable core 1 is usually composed of a conductor 11, an inner shielding layer 12, an insulating layer 13 and an insulating shielding layer 14 in sequence to provide the basic function of power transmission; the self-controlling temperature heating reinforcement core layer 2 is located outside the insulating cable core 1, and is used to provide additional temperature regulation and heating functions to cope with extreme weather conditions, so that the cable can prevent the formation of ice or frost in a cold environment; the self-controlling temperature heating belt 21 is the core part of the self-controlling temperature heating reinforcement core layer 2, which has an automatic temperature control function, can sense changes in ambient temperature, and adjust the heating power as needed to ensure that the cable surface temperature is within an appropriate range to prevent the formation of ice or frost.

[0024] The self-controlling temperature heating overhead insulated cable in this embodiment is provided with a self-controlling temperature heating reinforced core layer 2 with a self-controlling temperature heating belt 21 outside the insulating cable core 1. The self-controlling temperature heating belt 21 can sense the ambient temperature in real time, and prevent the formation of ice or frost by automatically adjusting the heating power, thereby effectively reducing the cable load and power loss, and improving the reliability and stability of the cable in extremely cold weather. The self-controlling temperature heating belt 21 has an automatic temperature control function, and can adjust the heating power according to actual needs, reduce energy consumption, and improve energy efficiency; the self-controlling temperature heating reinforced core layer 2 provides comprehensive protection for the cable, which not only ensures the conductive performance of the cable, but also ensures the stable operation of the cable in harsh environments.

[0025] Optionally, combined Figure 1 , Figure 2 As shown, the self-controlling temperature heating reinforcement core layer 2 also includes a galvanized steel pipe 22 sleeved on the self-controlling temperature heating belt 21; the galvanized steel pipe 22 is located outside the self-controlling temperature heating belt 21, providing further protection and reinforcement for the self-controlling temperature heating reinforcement core layer 2; the galvanized steel pipe 22 is a corrosion-resistant pipe, usually made of a carbon steel pipe with a layer of zinc plated on the surface, which can resist possible corrosion problems in a humid environment and extend the service life of the self-controlling temperature heating reinforcement core layer 2. The galvanized steel pipe 22 can also enhance the mechanical strength of the cable, making it more adaptable to harsh use environments.

[0026] Optionally, combined Figure 1 , Figure 2As shown, the self-controlling temperature tracing reinforcing core layer 2 also includes galvanized steel wires 23 arranged outside the galvanized steel pipe 22; the galvanized steel wires 23 are uniformly covered on the outside of the galvanized steel pipe 22 in the circumferential direction, providing further mechanical protection and structural support. The galvanized steel wires 23 are usually a steel wire mesh formed around the surface of the galvanized steel pipe 22, which increases the overall mechanical strength of the self-controlling temperature tracing reinforcing core layer 2 and improves the cable's ability to resist extrusion, bending and external impact. The arrangement of the galvanized steel wires 23 forms an additional sheath layer, which further strengthens the protection of the self-controlling temperature tracing belt 21 and makes the cable more reliable.

[0027] Optionally, combined Figure 1 As shown, there are multiple insulating cable cores 1, that is, the cable contains more than one insulating cable core 1, and multiple insulating cable cores 1 can be arranged in parallel inside the cable, which increases the conductive cross-sectional area of ​​the cable and improves the power transmission capacity of the cable to meet the power transmission needs of higher currents.

[0028] Optionally, combined Figure 1 As shown, the self-controlling temperature tracing and reinforcing core layer 2 is located between two or more adjacent insulating cable cores 1; placing the self-controlling temperature tracing and reinforcing core layer 2 between adjacent insulating cable cores 1 helps to distribute the heating effect more evenly, prevents a certain insulating cable core 1 from being excessively cooled, reduces the decrease in conductivity caused by low temperature, ensures that the entire cable can be effectively protected from ice and frost in bad weather, and can more effectively utilize the cable space, making the entire structure more compact. The existence of the self-controlling temperature tracing and reinforcing core layer 2 not only provides temperature regulation for the insulating cable core 1, but also plays a role in mutual protection of adjacent insulating cable cores 1.

[0029] Optionally, combined Figure 1 , Figure 3 As shown, the insulating cable core 1 includes a conductor 11 , an inner shielding layer 12 , an insulating layer 13 and an insulating shielding layer 14 which are arranged in sequence from the inside to the outside, and the self-controlling temperature tracing and reinforcing core layer 2 is arranged outside the insulating shielding layer 14 .

[0030] The conductor 11 is located in the innermost layer of the insulating cable core 1. There are multiple conductors 11, which are made of high-conductivity aluminum alloy, that is, aluminum alloy with high conductivity. The high-conductivity aluminum alloy conductor 11 is composed of multiple strands of twisted aluminum alloy wires, which not only improves the conductivity of the conductor 11, but also has the characteristics of high mechanical strength and strong creep resistance. The high-conductivity aluminum alloy conductor 11 has a high conductivity, which can reduce transmission losses and improve conductivity. The inner shielding layer 12 is located outside the conductor 11 and is used to shield the internal electric field of the cable and improve the electromagnetic compatibility of the cable. Layer 13 is located outside the inner shielding layer 12, and is used to isolate the conductor 11 and the insulating shielding layer 14 to prevent current leakage. It usually uses materials with excellent insulation properties, such as polyethylene (PE) or cross-linked polyethylene (XLPE). The insulating shielding layer 14 is located outside the insulating layer 13, and is used to shield the external electric field of the cable and improve the electromagnetic compatibility of the cable. It usually uses metal or conductive materials. The self-controlling temperature heating reinforcement core layer 2 is arranged outside the insulating shielding layer 14, and is a self-controlling temperature heating belt 21 with automatic temperature control function, which is used to adjust the surface temperature of the cable to prevent the formation of ice or frost.

[0031] In this embodiment, by providing a conductor 11, an inner shielding layer 12, an insulating layer 13 and an insulating shielding layer 14, the cable forms a multi-layer structure, which improves the insulation performance, shielding performance and durability of the cable. The self-controlling heating reinforcing core layer 2 is located outside the insulating shielding layer 14. By adjusting the heating power, the formation of ice or frost is prevented, thereby ensuring the normal operation of the cable and improving its reliability and stability in harsh environments.

[0032] Optionally, the self-controlling temperature heating belt 21 is made of semi-conductive plastic; semi-conductive plastic is a material with an electrical conductivity between that of the conductor 11 and the insulator, has a certain conductive property, and can achieve self-control temperature by adjusting the resistance, so that the self-controlling temperature heating belt 21 can sense the change of ambient temperature and automatically adjust the heating power to keep the cable surface temperature within a suitable range to prevent the formation of ice or frost; in addition, the plastic material makes the self-controlling temperature heating belt 21 have good flexibility and plasticity, and can better fit the shape of the cable surface, ensuring uniform heating effect and comprehensive coverage; semi-conductive plastic usually has good corrosion resistance, can resist chemicals in the external environment, and improve the durability of the self-controlling temperature heating belt 21.

[0033] Due to the characteristics of semi-conductive plastic, the self-controlling temperature heating belt 21 can effectively prevent overheating when heated, thereby improving the safety of the cable; in a low temperature environment, the resistance of the semi-conductive plastic is large, and the self-controlling temperature heating belt 21 generates a large amount of heat when powered on to heat the insulating cable core 1, thereby achieving the function of melting snow and ice; as the temperature rises, the resistance decreases accordingly, thereby adjusting the heat output power to achieve the purpose of heat preservation and temperature control, that is, when a cold wave or blizzard occurs, heat can be released to heat the conductor at a constant temperature, thereby achieving the function of melting snow and ice, thereby avoiding the problem of power transmission interruption caused by the conductor being broken due to overload.

[0034] Optionally, the semi-conductive plastic comprises conductive carbon black and polymer. Conductive carbon black is added to the semi-conductive plastic as a conductive filler, and a certain polymer is used as a base material, which effectively improves the conductivity of the semi-conductive plastic, so that it can realize the self-controlled temperature regulation function; the polymer is used as a base material, so that the semi-conductive plastic maintains good flexibility and plasticity, which is conducive to the self-controlled temperature heating belt 21 to fit the shape of the cable surface and ensure uniform heating effect; the composite material of conductive carbon black and polymer can usually provide the semi-conductive plastic with good stability and durability, so that the self-controlled temperature heating belt 21 maintains good performance in long-term use, realizes the electric heating performance of the self-controlled temperature heating belt 21, and ensures the reliability of the cable in cold environments.

[0035] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A self-controlling temperature tracing overhead insulated cable, characterized in that: The invention comprises an insulating cable core (1), wherein a self-controlling temperature heating reinforcing core layer (2) is arranged outside the insulating cable core (1), wherein the self-controlling temperature heating reinforcing core layer (2) comprises a self-controlling temperature heating belt (21) having an automatic temperature control function; the self-controlling temperature heating reinforcing core layer (2) further comprises a galvanized steel pipe (22) sleeved outside the self-controlling temperature heating belt (21); and the self-controlling temperature heating reinforcing core layer (2) further comprises a galvanized steel wire (23) arranged outside the galvanized steel pipe (22).

2. The self-controlling temperature tracing overhead insulated cable according to claim 1, characterized in that: The number of the insulating cable cores (1) is multiple.

3. The self-controlling temperature tracing overhead insulated cable according to claim 2, characterized in that: The self-controlling temperature tracing and reinforcing core layer (2) is located between two or more adjacent insulating cable cores (1).

4. The self-controlling temperature tracing overhead insulated cable according to claim 1, characterized in that: The insulating cable core (1) comprises a conductor (11), an inner shielding layer (12), an insulating layer (13) and an insulating shielding layer (14) which are arranged in sequence from the inside to the outside, and the self-controlling temperature tracing and reinforcing core layer (2) is arranged outside the insulating shielding layer (14).

5. The self-controlling temperature tracing overhead insulated cable according to claim 4, characterized in that: The conductor (11) is made of a highly conductive aluminum alloy.

6. The self-controlling temperature tracing overhead insulated cable according to claim 4, characterized in that: The number of the conductors (11) is multiple.

7. The self-regulating temperature tracing overhead insulated cable according to any one of claims 1 to 6, characterized in that: The material of the self-controlling temperature heating belt (21) is semi-conductive plastic.

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