Ice melting device for high-voltage power transmission cable capable of taking electricity through induction

Abstract

The invention discloses a high-voltage power transmission cable ice melting device capable of taking electricity through induction, and the device is characterized in that a magnetic core assembly is arranged on an installation assembly, converts electromagnetic energy into electric energy, and is used for carrying out the induction electricity taking; the locking assemblies are arranged on the mounting assembly, located on the two sides of the magnetic core assembly and used for fixing the high-voltage power transmission cable. The heating coil wraps the high-voltage power transmission cable, spirally extends in the length direction of the high-voltage power transmission cable and is used for converting electric energy into heat energy and directly transmitting the heat energy to the high-voltage power transmission cable, so that pre-judgment type ice melting is realized; the temperature sensor is arranged on the installation assembly and used for monitoring the surrounding environment temperature of the high-voltage power transmission cable in real time, and when it is detected that the temperature is reduced to an easy-to-freeze threshold value, a heating instruction is automatically triggered. The ice melting device has the beneficial effects that the risk of device failure caused by a power supply fault is reduced, the ice melting efficiency is greatly improved, the daily maintenance frequency and cost are reduced, the long-term operation and maintenance pressure is reduced, the structure is simple, the manufacturing cost is low, and the damage is not easy.

Description

Technical Field

[0001] This invention relates to an ice-melting device, and more particularly, to an inductively powered high-voltage transmission cable ice-melting device. Background Technology

[0002] Icing on transmission lines is a core safety hazard for power system operation in winter. While the northern and southern regions exhibit different icing characteristics due to climatic differences, both pose a serious threat to the power grid. In the north, icing is hard and of stable thickness, and long-term accumulation can easily lead to conductor overload and tower overload. In the south, rapid icing caused by freezing rain is sudden and can quickly exceed the line's load-bearing capacity. The common hazards of both types manifest in three core issues: firstly, exceeding the line load limit; for example, on a 220kV transmission line, when the icing thickness reaches 20mm, the line load can exceed the limit. First, an extra load exceeding 30kg on a meter-long conductor can easily lead to conductor breakage and tower collapse. Second, conductor galloping occurs when ice-covered conductors experience low-frequency vibrations with large amplitudes of 1-3 meters under wind force, causing collisions with towers and insulators, resulting in hardware damage and short circuits. Third, insulator flashover occurs because the conductive water film formed by ice accumulation or melting reduces the insulation performance of insulators. Especially in northern regions, long-term ice accumulation can easily accumulate impurities, increasing the risk of ice flashover with the duration of icing, ultimately leading to line grounding faults. To address the threat of icing, the industry has developed various de-icing and melting technologies. While ice-melting technology is available, existing methods are limited. Firstly, manual inspection and mechanical tapping were the mainstream early methods. The former relies on manpower, making it difficult to cover lines in remote and complex terrains, and it cannot respond in real time to sudden icing. The latter easily causes physical damage to conductor insulation and tower hardware, shortening the line's lifespan. Furthermore, thick ice can easily cause conductor galloping, exacerbating the risk of phase-to-phase flashover. Secondly, Joule heating ice-melting technologies such as DC and AC short-circuit ice-melting, while able to melt ice by increasing current, require a large external power supply, resulting in high equipment investment (e.g., DC ice-melting devices can reach 60MVA capacity) and complex operation. AC short-circuit ice-melting is limited by power supply capacity and is only suitable for medium and low voltage lines. While DC ice-melting can cover high-voltage lines, it requires changing the grid operation mode, shutting down the target line for each ice-melting operation, and cannot handle multiple lines simultaneously. The stability of the external power supply is also difficult to guarantee under extreme weather conditions. In addition, these devices are mostly large, fixed or mobile equipment with low adaptability to terrain and voltage levels, making them difficult to apply to distributed, remote high-voltage transmission lines.

[0003] Therefore, those skilled in the art are dedicated to providing a high-voltage transmission cable de-icing device that can effectively solve the above-mentioned technical problems by using inductive power extraction. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides a high-voltage transmission cable de-icing device that utilizes inductive power supply, including an installation assembly; A magnetic core assembly, disposed on the mounting assembly, converts electromagnetic energy into electrical energy for inductive power extraction; A locking assembly is disposed on the mounting assembly and located on both sides of the magnetic core assembly for fixing the high-voltage transmission cable; A heating coil is wrapped around the outside of a high-voltage transmission cable and extends in a spiral shape along the length of the high-voltage transmission cable. It is used to convert electrical energy into heat energy and directly transfer it to the high-voltage transmission cable to achieve predictive de-icing. A temperature sensor, installed on the mounting assembly, is used to monitor the ambient temperature around the high-voltage transmission cable in real time. When the temperature drops to the threshold for easy icing, a heating command is automatically triggered.

[0005] Furthermore, the mounting assembly includes a base and an obstacle ball housing, and both the magnetic core assembly and the locking assembly are disposed at the upper end of the base; The obstacle ball shell is detachably connected to the base, and both the magnetic core assembly and the locking assembly are located inside the obstacle ball shell.

[0006] Furthermore, the lower end of the base is provided with two single lamp covers, and each single lamp cover is provided with an obstruction lamp.

[0007] Furthermore, the obstacle ball shell includes a left shell and a right shell that interlock with each other; The lower ends of the left and right housings are hinged to the base. The upper ends of the left and right housings are provided with extension blocks and positioning grooves. Each extension block is located at each positioning groove and is fixed by eye bolts.

[0008] Furthermore, the magnetic core assembly includes a lower magnetic core housing, and a magnetic core upper cover is provided at the upper end of the lower magnetic core housing. A magnetic core channel is formed between the lower magnetic core housing and the magnetic core upper cover for the high-voltage transmission cable to pass through.

[0009] Furthermore, there are two magnetic core assemblies, and a positioning cavity is provided at the upper end of the base. The lower half of the lower shell of each magnetic core is located in the respective positioning cavity.

[0010] Furthermore, the lower end of the base is provided with two mounting seats, each of the single lamp covers is located directly below each of the positioning cavities, and is connected to each of the mounting seats to form an internal space for mounting the obstruction lamp. Each of the mounting seats is provided with a wire hole, and each of the wire holes passes through each of the positioning cavities.

[0011] Furthermore, threaded positioning through holes are provided on both sides of the base, and sockets are inserted into the threaded positioning through holes. The heating coil is connected to the plug, and the plug is inserted into the socket.

[0012] Furthermore, the locking assembly includes a positioning frame integrally formed with the base. The upper end of the positioning frame has an upper arc-shaped section, and a clamping plate is provided above the positioning frame. A reinforcing rib is provided at the upper end of the clamping plate, and a lower arc-shaped section is provided at the lower end of the clamping plate. A cable sheath passing through the high-voltage transmission cable is provided between the upper arc-shaped section and the lower arc-shaped section. The clamping plate is detachably connected to the positioning frame.

[0013] Furthermore, the lower half of the positioning frame is provided with limiting cavities on both sides, and each limiting cavity has a movable lock. A pin is inserted into the movable lock, the lower end of the screw is sleeved on the pin, and the upper half of the screw is threaded with a retaining ring.

[0014] The present invention has the following beneficial effects 1. No external power supply required, high reliability: Power is drawn by induction through the magnetic core assembly, and electrical energy is converted by the electromagnetic field of the high-voltage transmission cable itself. No external power supply is required, and the dependence on the external power supply system is completely eliminated. This design has significant advantages in transmission lines in remote and complex terrains. It reduces the risk of device failure due to power failure and saves the cost and construction difficulty of laying power supply lines. 2. This invention adopts a predictive heating logic, which monitors the ambient temperature in real time through a temperature sensor and actively heats the cable before ice forms. Compared with the traditional method of removing ice after it forms, this invention can prevent damage to the cable from ice at the source, avoid serious accidents such as cable breakage and tower tilting caused by ice, significantly improve the de-icing efficiency, and reduce the probability of power transmission failure caused by ice, thus ensuring the stability of the power grid. 3. The heating coil is directly attached to the cable for heating, ensuring precise heat transfer and avoiding damage to the cable insulation layer caused by traditional de-icing methods (such as current short-circuit de-icing); the obstruction light inside the single lampshade is continuously powered, clearly warning of the location of high-voltage lines, effectively preventing safety hazards such as collisions with flying objects and accidental contact during outdoor operations, covering both land and air scenarios. 4. By using standardized components such as the locking mechanism, pins, and screws, along with the hinged obstacle ball housing, the device and cables can be fixed quickly, significantly reducing construction time. 5. The device has strong overall sealing. Core components such as magnetic cores and heating coils are protected by the barrier sphere shell, which can effectively resist the erosion of wind, rain, sand, dust and snow, reduce the frequency and cost of daily maintenance, reduce the pressure of long-term operation and maintenance, and also has the advantages of simple structure, low manufacturing cost and not easy to damage. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the present invention without a right shell.

[0017] Figure 3 yes Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0018] Figure 4 This is a bottom view of the structure of the present invention without high-voltage transmission cables.

[0019] Figure 5 This is a schematic diagram of the structure of the left shell in this invention.

[0020] Figure 6 yes Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0021] Figure 7 yes Figure 5 A magnified schematic diagram of the structure at point C.

[0022] Figure 8 This is a schematic diagram of a structure with a magnetic core, a lower housing, and a single lampshade respectively installed on the upper and lower parts of the base.

[0023] Figure 9 yes Figure 8 A magnified schematic diagram of the structure at point D.

[0024] Figure 10 This is a schematic diagram of the right shell.

[0025] Figure 11 This is a three-dimensional structural diagram of the plug in this invention.

[0026] Figure 12 This is a schematic diagram of a structure with positioning cavities and other components on the base.

[0027] Figure 13 yes Figure 12 A schematic diagram of the three-dimensional structure viewed from below.

[0028] Figure 14 This is a schematic diagram of the wire clamp.

[0029] Figure 15 It is a structural diagram showing the use of components such as pins and screws.

[0030] The attached diagram lists the components represented by each number as follows: 1. Mounting components; 2. Magnetic core assembly; 3. Locking assembly; 5. High-voltage transmission cable; 6. Heating coil; 7. Base; 8. Obstacle ball housing; 9. Single lampshade; 10. Left housing; 11. Right housing; 12. Extension block; 13. Positioning groove; 15. Lifting eye screw; 16. Lower housing of magnetic core; 17. Upper cover of magnetic core; 18. Magnetic core channel; 19. Positioning cavity; 21. Wire hole; 22. Socket; 23. Plug; 26. Positioning frame; 27. Upper arc section; 28. Cable clamping plate; 29. ​​Reinforcing rib; 30. Lower arc section; 31. Cable sheath; 32. Limiting cavity; 33. Lock; 35. Pin; 36. Screw; 37. Buckle; 50. Threaded positioning through hole, mounting base; 60. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments: In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] like Figures 1 to 15 As shown, a high-voltage transmission cable de-icing device that uses induction to draw power includes an installation component 1; The magnetic core assembly 2, mounted on the mounting assembly 1, converts electromagnetic energy into electrical energy for inductive power extraction. Specifically, the magnetic core assembly 2 couples energy from the power frequency electromagnetic field of the high-voltage transmission cable 5 through the principle of electromagnetic induction. After rectification, filtering, and voltage stabilization by the circuit control system, it outputs stable electrical energy to power the heating coil 6 and the obstruction light. The induction voltage range of a single magnetic core assembly is 110V~220V. Two magnetic core assemblies are connected in parallel to improve power supply reliability and power redundancy.

[0034] Locking assembly 3 is disposed on the mounting assembly 1 and located on both sides of the magnetic core assembly 2, for fixing the high-voltage transmission cable 5; Heating coil 6 is wrapped around the outside of high-voltage transmission cable 5 and extends in a spiral shape along the length of high-voltage transmission cable 5. It is used to convert electrical energy into heat energy and directly transfer it to high-voltage transmission cable 5 to achieve predictive de-icing. A temperature sensor is installed on the mounting assembly 1 to monitor the ambient temperature around the high-voltage transmission cable 5 in real time. When the temperature drops to the icing threshold, a heating command is automatically triggered. Specifically, the temperature sensor is installed on the upper surface of the base, close to the magnetic core assembly. Its detection accuracy range is ±0.5℃. The icing threshold can be preset to 0℃~2℃ according to different regional climate conditions. It forms a linkage control with the heating coil and magnetic core assembly through the circuit control system.

[0035] The mounting assembly 1 includes a base 7 and an obstacle ball housing 8, and the magnetic core assembly 2 and the locking assembly 3 are both disposed on the upper end of the base 7; The obstacle ball housing 8 is detachably connected to the base 7, and the magnetic core assembly 2 and the locking assembly 3 are both located inside the obstacle ball housing 8.

[0036] The base 7 has two single lamp covers 9 at its lower end, and each single lamp cover 9 is equipped with an obstruction light.

[0037] The obstacle ball shell 8 includes a left shell 10 and a right shell 11 that are interlocked. The lower ends of the left housing 10 and the right housing 11 are both hinged to the base 7. The upper ends of the left housing 10 and the right housing 11 are provided with extension blocks 12 and positioning grooves 13. Each extension block 12 is located at each positioning groove 13 and is fixed by eye bolts 15.

[0038] The magnetic core assembly 2 includes a lower magnetic core housing 16, and a magnetic core upper cover 17 is provided at the upper end of the lower magnetic core housing 16. A magnetic core channel 18 is formed between the lower magnetic core housing 16 and the magnetic core upper cover 17 for the high-voltage transmission cable 5 to pass through.

[0039] There are two magnetic core assemblies 2. The upper end of the base 7 is provided with a positioning cavity 19, and the lower half of the lower housing 16 of each magnetic core is located in the positioning cavity 19.

[0040] The base 7 has two mounting seats 60 at its lower end. Each single lampshade 9 is located directly below each positioning cavity 19 and is connected to each mounting seat 60 to form an internal space for mounting the obstruction light. Each mounting seat 60 has a wire hole 21 that extends into each positioning cavity 19. Preferably, in use, the internal space for mounting the obstruction light can also accommodate related circuit control devices, and further, sensors and remote communication modules.

[0041] Both sides of the base 7 are provided with threaded positioning through holes 50, and a socket 22 is inserted into the threaded positioning through hole 50. The heating coil 6 is connected to the plug 23, and the plug 23 is inserted into the socket 22.

[0042] The locking assembly 3 includes a positioning frame 26 integrally formed with the base 7. The upper end of the positioning frame 26 has an upper arc-shaped section 27. A clamping plate 28 is provided above the positioning frame 26. A reinforcing rib 29 is provided at the upper end of the clamping plate 28. The lower end of the clamping plate 28 has a lower arc-shaped section 30. A cable sheath 31 passing through the high-voltage transmission cable 5 is provided between the upper arc-shaped section 27 and the lower arc-shaped section 30. The clamping plate 28 is detachably connected to the positioning frame 26.

[0043] The lower half of the positioning frame 26 is provided with limiting cavities 32 on both sides. Each limiting cavity 32 has a lock 33. A pin 35 is inserted into the lock 33. The lower end of the screw 36 is sleeved on the pin 35. The upper half of the screw 36 is threaded with a retaining ring 37.

[0044] The optimal working principle of this invention is as follows: First, the base 7 of the mounting component 1 and the outer shell 8 of the obstacle ball are used to construct the basic support and protection structure. Then, the positioning frame 26, clamping plate 28, cable sheath 31 and other components of the locking component 3 are used to firmly fix the device to the high-voltage transmission cable 5. Subsequently, the magnetic core component 2 uses the electromagnetic field of the cable to achieve induction power. One path of power is delivered to the heating coil 6, and the other path powers the obstacle light in the single lamp cover 9. The temperature sensor (set on the base 7 of the mounting component 1) monitors the ambient temperature around the high-voltage transmission cable 5 in real time. When the temperature sensor detects that the ambient temperature reaches the threshold for easy freezing, it automatically triggers the heating command. In addition, as a further preferred option, a remote communication module can also be equipped, which allows heating to be controlled remotely. After the heating command is triggered, the heating coil 6 converts electrical energy into heat energy and transfers it directly to the surface of the high-voltage transmission cable 5, so that the rain and snow falling on the cable melt immediately and prevents it from freezing and forming ice. This structure is different from the traditional de-icing mode after icing, and achieves predictive de-icing to prevent problems before they occur. At the same time, the obstruction light continues to illuminate to warn of the location of the high-voltage line.

[0045] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A high-voltage transmission cable de-icing device based on induction power supply, characterized in that: Includes installation components (1); The magnetic core assembly (2) is disposed on the mounting assembly (1) and converts electromagnetic energy into electrical energy for inductive power extraction. Locking assembly (3) is disposed on the mounting assembly (1) and located on both sides of the magnetic core assembly (2) for fixing the high voltage transmission cable (5); Heating coil (6) is wrapped around the outside of high-voltage transmission cable (5) and extends in a spiral shape along the length of the high-voltage transmission cable (5) to convert electrical energy into heat energy and directly transfer it to the high-voltage transmission cable (5) to achieve predictive ice melting; A temperature sensor is installed on the mounting assembly (1) to monitor the ambient temperature around the high-voltage transmission cable (5) in real time. When the temperature drops to the threshold for easy freezing, a heating command is automatically triggered.

2. The high-voltage transmission cable de-icing device based on inductive power extraction as described in claim 1, characterized in that: The mounting assembly (1) includes a base (7) and an obstacle ball shell (8), and the magnetic core assembly (2) and the locking assembly (3) are both disposed on the upper end of the base (7); The obstacle ball shell (8) is detachably connected to the base (7), and the magnetic core assembly (2) and the locking assembly (3) are both located inside the obstacle ball shell (8).

3. The high-voltage transmission cable de-icing device based on inductive power extraction as described in claim 2, characterized in that: The base (7) has two single lamp covers (9) at its lower end, and each of the single lamp covers (9) is equipped with an obstruction lamp.

4. The high-voltage transmission cable de-icing device based on inductive power extraction as described in claim 3, characterized in that: The obstacle ball shell (8) includes a left shell (10) and a right shell (11) that interlock with each other. The lower ends of the left housing (10) and the right housing (11) are hinged to the base (7). The upper ends of the left housing (10) and the right housing (11) are provided with extension blocks (12) and positioning grooves (13). Each extension block (12) is located at each positioning groove (13) and is fixed by eye bolts (15).

5. The high-voltage transmission cable de-icing device based on inductive power extraction as described in claim 4, characterized in that: The magnetic core assembly (2) includes a lower magnetic core housing (16), and a magnetic core upper cover (17) is provided at the upper end of the lower magnetic core housing (16). A magnetic core channel (18) is formed between the lower magnetic core housing (16) and the magnetic core upper cover (17) for the high-voltage transmission cable (5) to pass through.

6. The high-voltage transmission cable de-icing device for inductive power extraction as described in claim 5, characterized in that: There are two magnetic core assemblies (2), and a positioning cavity (19) is provided at the upper end of the base (7). The lower half of each magnetic core lower shell (16) is located in each positioning cavity (19).

7. The high-voltage transmission cable de-icing device for inductive power extraction as described in claim 6, characterized in that: The base (7) has two mounting seats (60) at its lower end. Each single lamp cover (9) is located directly below each positioning cavity (19) and is connected to each mounting seat (60) to form an internal space for mounting obstruction lights. Each mounting seat (60) has a wire hole (21) which extends to each positioning cavity (19).

8. The high-voltage transmission cable de-icing device for inductive power extraction as described in claim 7, characterized in that: Both sides of the base (7) are provided with threaded positioning through holes (50), and a socket (22) is provided inside the threaded positioning through holes (50). The heating coil (6) is connected to the plug (23), and the plug (23) is inserted into the socket (22).

9. The high-voltage transmission cable de-icing device for inductive power extraction as described in claim 8, characterized in that: The locking assembly (3) includes a positioning frame (26) integrally formed with the base (7). The upper end of the positioning frame (26) has an upper arc-shaped section (27). The upper part of the positioning frame (26) has a clamping plate (28). The upper end of the clamping plate (28) is provided with a reinforcing rib (29). The lower end of the clamping plate (28) has a lower arc-shaped section (30). Between the upper arc-shaped section (27) and the lower arc-shaped section (30) is a cable sheath (31) that passes through the high-voltage transmission cable (5). The clamping plate (28) is detachably connected to the positioning frame (26).

10. The high-voltage transmission cable de-icing device for inductive power extraction as described in claim 9, characterized in that: The lower half of the positioning frame (26) is provided with limiting cavities (32) on both sides. The limiting cavity (32) has a lock (33). A pin (35) is inserted into the lock (33). The lower end of the screw (36) is sleeved on the pin (35). The upper half of the screw (36) is threaded with a retaining ring (37).

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