Temperature control and ice melting integrated system for preventing cable from icing

Abstract

The utility model provides a temperature control and ice melting integrated system for preventing a cable from icing, which comprises an electric heating ice melting system, a temperature control system and an alarm system, the electric heating ice melting system comprises a super-hydrophobic electric heating ice melting coating which is coated outside an outer insulating layer of the cable; the temperature control system comprises a temperature detector and an external power supply which are arranged on a cable pile, the external power supply is electrically connected with the super-hydrophobic electric heating ice melting coating and the temperature detector, and the temperature detector monitors the environment temperature and the working temperature of the cable in real time. Therefore, the temperature control state of the cable is formed through the external power supply. According to the temperature control and ice melting integrated system capable of preventing the cable from icing, the environment temperature and the working temperature of the cable are monitored in real time, so that the electric heating ice melting system and the alarm system are controlled to be turned on and turned off, and the output power of the external power supply is automatically adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of cable ice melting, and in particular to a temperature control and ice melting integrated system for preventing cable icing. Background Art

[0002] As a device for transmitting electric energy and signals, cables play an indispensable role in power transmission. They are composed of multiple insulated conductors and are usually installed in the air or buried underground or underwater. In low temperature and rainy and snowy environments, the cable surface is prone to ice, causing the cable to gain weight and be pressed down, or even break, resulting in power failures and safety accidents. Utility Model Content

[0003] The utility model aims to provide a temperature control and ice-melting integrated system which can actively prevent cable icing and has a long-lasting deicing capability.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A temperature control and ice-melting integrated system for preventing cable icing comprises an electric thermal ice-melting system, a temperature control system, and an alarm system; the electric thermal ice-melting system comprises a super-hydrophobic electric thermal ice-melting coating coated on the outer insulation layer of the cable; the temperature control system comprises a temperature detector and an external power supply arranged on a cable pile, the external power supply is electrically connected to the super-hydrophobic electric thermal ice-melting coating and the temperature detector, the temperature detector monitors the ambient temperature and the working temperature of the cable in real time, thereby forming a temperature control state of the cable through the external power supply; the alarm system is electrically connected to the temperature detector and the external power supply at the same time, so as to issue an over-temperature warning to the working temperature of the cable and shut down the external power supply.

[0006] Furthermore: the cable includes a core body, an inner shielding layer, an inner insulating layer and the outer insulating layer which are arranged in sequence from the inside to the outside.

[0007] Furthermore: the super-hydrophobic electrothermal ice-melting coating comprises a mixture of super-hydrophobic material, inorganic nanoparticles and carbon-based electrothermal material.

[0008] Furthermore, the mixing ratio of the super hydrophobic material, the inorganic nanoparticles and the carbon-based electrothermal material is 90-80:5-10:5-10.

[0009] Furthermore: the integrated temperature control and ice-melting system forms zoned preventive control on the cables in the entire power transmission system.

[0010] Furthermore: the coating thickness of the super hydrophobic electrothermal ice-melting coating is 1-2 mm.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model uses the integrated temperature control and ice-melting system that can prevent the cable from freezing to monitor the ambient temperature and the cable working temperature in real time to control the opening and closing of the electric heating ice-melting system and the alarm system, and automatically adjust the output power of the external power supply without any additional mechanical equipment, thereby effectively ensuring that the power output environment of the cable is maintained in the best state. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of a cable coated with a super-hydrophobic electric thermal ice-melting coating according to the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the super-hydrophobic electrothermal ice-melting coating of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the temperature control and ice melting integrated system of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the temperature control system of the utility model;

[0017] Figure 5 It is a schematic diagram of the working process of the temperature control and ice melting integrated system of the present utility model.

[0018] The markings in the accompanying drawings are: core 1, inner shielding layer 2, inner insulating layer 3, outer insulating layer 4, super-hydrophobic electrothermal ice-melting coating 5, inorganic nanoparticles 6, super-hydrophobic material 7, carbon-based electrothermal material 8, power output port 9, and temperature detector 10. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0020] like Figure 1-5 As shown, a temperature control and ice-melting integrated system for preventing cable icing includes an electric thermal ice-melting system, a temperature control system, and an alarm system; the electric thermal ice-melting system includes a super-hydrophobic electric thermal ice-melting coating 5 coated on the outside of the cable outer insulation layer 4; the temperature control system includes a temperature detector 10 and an external power supply arranged on the cable pile, the external power supply is electrically connected to the super-hydrophobic electric thermal ice-melting coating and the temperature detector 10, the temperature detector 10 monitors the ambient temperature and the working temperature of the cable in real time, thereby forming a temperature control state of the cable by controlling the external power supply; an alarm device electrically connected to the temperature detector 10 and the external power supply is arranged in the alarm system, and an over-temperature warning is given to the working temperature of the cable through the alarm device, and the external power supply can be turned off.

[0021] In this embodiment, the upper limit of the cable working temperature monitoring set by the temperature detector 10 is 50°C, and the lower limit of the cable freezing prevention temperature monitoring set is 0°C. Among them, the continuous over-temperature alarm system will trigger an alarm and automatically shut down the external power supply to prevent the cable from overheating when the cable working temperature still exceeds 50°C after the external power supply reduces the power output power for three consecutive times. The alarm device can use a conventional buzzer.

[0022] like Figure 1 As shown, specifically, the cable includes a core body 1, an inner shielding layer 2, an inner insulating layer 3 and an outer insulating layer 4 which are arranged in sequence from the inside to the outside.

[0023] like Figure 2 As shown, specifically, the super-hydrophobic electrothermal ice-melting coating 5 is a hydrophobic conductive layer, which includes a mixture of super-hydrophobic material 7, inorganic nanoparticles 6 and carbon-based electrothermal material 8.

[0024] Among them, the superhydrophobic material 7 is one or more of organic silicon materials and organic fluorine materials; the inorganic nanoparticles 6 are modified silicon dioxide of one or more materials such as zinc oxide, cerium oxide and zirconium oxide, with a size of less than 30nm; the carbon-based electrothermal material 8 is at least one of materials such as carbon nanotubes, nanocarbon balls and graphene.

[0025] The super-hydrophobic electric thermal ice-melting coating 5 is evenly coated on the surface of the cable outer insulation layer 4, and the coating thickness of the super-hydrophobic electric thermal ice-melting coating 5 is 1-2 mm.

[0026] like Figure 3 As shown, specifically, the integrated temperature control and ice-melting system forms zoned preventive control over the cables in the entire power transmission system.

[0027] Among them, the cables in the area are connected at both ends through cable piles on both sides, and the temperature control system is set on the cable piles on both sides, so as to simultaneously monitor the real-time ambient temperature and cable working temperature of the area through temperature detectors 10 at both ends, so as to achieve the purpose of bilateral control of external power supply opening and closing and output power.

[0028] like Figure 4As shown, the external power supply can be arranged in the temperature detector 10, so that the external power supply and the temperature detector 10 share the same housing, and thus are uniformly installed on the cable pile. The external power supply converts AC power into DC power for output through a rectifier, and the output end of the external power supply is through the power output port 9 on the temperature detector 10, and the power output port 9 is connected to the super-hydrophobic electric thermal ice-melting coating 5 to form a conductive connection; the specific connection method is: through the copper sheet electrode or silver wire pre-buried in the hydrophobic electric thermal ice-melting layer 5 and other conductive materials connected to the power output port to form a complete current loop. The external power supply is electrically connected to the cable and can store electricity to ensure that there is enough electricity to prevent the cable from freezing before the cable power is transmitted.

[0029] In this embodiment, according to the super-hydrophobic theory, it can be known that the higher the free energy of the solid surface, the easier it is for the liquid to spread on its surface, and vice versa. The surface tension of the liquid is generally less than 100mN / m, such as the surface tension of water is 72.8mN / m (20°C), and the surface tension of organic compounds is generally less than the surface tension of water. The solid surface is usually divided into low-energy surfaces, such as fluorine-containing silicon surfaces that are not easily wetted by liquids, and high-energy surfaces, such as common metals that are easily wetted by liquids. Organic fluorine compounds have the lowest surface tension, excellent hydrophobic and oleophobic properties, high weather resistance, heat resistance, stability, and can be made into low-surface energy coatings that are superior in all aspects such as waterproofing, oleophobic, antifouling and film-forming. The bond energy of the silicon-oxygen bond in the organosilicon molecule is as high as 443.5kJ / mol. The electronegativity of silicon and oxygen is quite different. It is a covalent bond close to an ionic bond, so it has excellent properties such as heat resistance, radiation resistance and oxidation resistance. Moreover, the polysiloxane macromolecules present a helical structure, the methyl groups in the molecules rotate around the silicon-oxygen bonds and arrange outwards. The molecular volume of polysiloxane is large and the cohesive force density is low, thus giving the polysiloxane macromolecules good hydrophobicity, anti-fouling and easy-to-scrub properties.

[0030] Among them, nano-scale materials have many special surface properties, such as surface interface effect, small size effect, quantum size effect and macroscopic particle tunneling effect, which give them special surface chemical properties. Silica nanoparticles modified by zinc oxide, cerium oxide or zirconium oxide can improve the roughness and aging resistance of the material; adding modified silica nanoparticles to organic hydrophobic materials can greatly improve their hydrophobicity, toughness and stability.

[0031] Moreover, according to the Joule heating principle, free electrons move in a directional manner under the action of an external electric field, and electrons collide with phonons, transferring energy to the conductor, causing the conductor temperature to rise. Carbon-based electrothermal materials, such as carbon fibers, carbon nanotubes, nanocarbon balls, and graphene, have excellent photothermal properties, electrical properties, and high thermal conductivity, so they can continuously generate heat and melt ice under the action of direct current.

[0032] See also Figure 1-5 The specific working process of the integrated temperature control and ice-melting system for preventing cable icing and melting ice is as follows:

[0033] When the temperature detector detects that the ambient temperature is lower than 0℃, the external power supply starts working and the integrated temperature control and ice-melting system starts; when the ambient temperature continues to be lower than 0℃, the output power of the external power supply increases; when the temperature control system detects that the cable operating temperature exceeds 50℃, the output power of the external power supply decreases; if the cable operating temperature still exceeds 50℃ after the power output power is reduced for three consecutive times, an alarm will be triggered and the external power supply will be automatically shut down; when the temperature detector detects that the ambient temperature is higher than 0℃, the external power supply stops working and the electric heating ice-melting system is shut down.

[0034] The above embodiment is only a preferred technical solution of the present invention. Those skilled in the art should understand that the technical solutions or parameters in the embodiments can be modified or replaced without departing from the principle and essence of the present invention, and all should be included in the protection scope of the present invention.

Claims

1. A temperature control and ice melting integrated system for preventing cable icing, characterized in that: Including electric ice melting system and temperature control system, as well as alarm system; The electric thermal ice-melting system comprises a super-hydrophobic electric thermal ice-melting coating (5) coated on the outer insulation layer (4) of the cable; the temperature control system comprises a temperature detector (10) and an external power supply arranged on the cable pile, the external power supply is electrically connected to the super-hydrophobic electric thermal ice-melting coating (5) and the temperature detector (10), and the temperature detector (10) monitors the ambient temperature and the working temperature of the cable in real time, thereby forming a temperature control state of the cable through the external power supply; The alarm system is electrically connected to the temperature detector (10) and the external power supply at the same time, so as to issue an over-temperature warning to the working temperature of the cable and shut down the external power supply.

2. The temperature control and ice-melting integrated system for preventing cable icing according to claim 1 is characterized in that: The cable comprises a core body (1), an inner shielding layer (2), an inner insulating layer (3) and an outer insulating layer (4) which are arranged in sequence from the inside to the outside.

3. The temperature control and ice-melting integrated system for preventing cable icing according to claim 1 is characterized in that: The integrated temperature control and ice-melting system forms zoned preventive control on the cables in the entire power transmission system.

4. The temperature control and ice-melting integrated system for preventing cable icing according to claim 1 is characterized in that: The coating thickness of the super hydrophobic electrothermal ice-melting coating (5) is 1-2 mm.

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