A kind of active air-cooled heat dissipation structure for field coil

Abstract

The application relates to a coil active air-cooling heat dissipation structure, and relates to a coil air-cooling heat dissipation structure which is suitable for spring vibrator excitation coil heat dissipation. The application is aimed at solving the problems of low natural heat dissipation efficiency of the excitation coil in the existing spring vibrator, complex water-cooling heat dissipation structure and poor electrical safety, and the excitation coil insulation plate and the fixed coil insulation plate are arranged in relative parallelism, a group of excitation coils are fixed on the excitation coil insulation plate through a group of excitation coil positioning members, a group of fixed coils are fixed on the fixed coil insulation plate through a group of fixed coil positioning members, a group of heat dissipation fans are installed on the excitation coil insulation plate, a group of heat dissipation fans are installed on the fixed coil insulation plate, the excitation coil insulation plate slides on the guide rod of the excitation coil relative to the fixed coil insulation plate, and one temperature sensor is respectively installed on the excitation coil insulation plate and the fixed coil insulation plate.

Description

Technical Field

[0001] This invention relates to a coil air-cooling heat dissipation structure, specifically to an active air-cooling heat dissipation structure for excitation coils. This invention is applicable to the heat dissipation of excitation coils on spring starters. Background Technology

[0002] Spring vibrators are a type of vibration-based debris removal device widely used in cable maintenance. Their core working principle is that the excitation coil generates an alternating magnetic field after being energized. The magnetic field force drives the vibration mechanism to vibrate reciprocally, causing debris attached to the cable surface to break and fall off. Due to its convenient debris removal effect, it has been widely used in various cable maintenance projects.

[0003] In actual engineering conditions, the excitation coil of a spring vibrator needs to be energized for extended periods. Since the coil is encapsulated within a sealed insulating structure, the large amount of heat generated during operation cannot dissipate quickly enough. If heat continues to accumulate, the coil's operating temperature will rise sharply, leading to a decline in insulation performance, accelerated material aging, and in severe cases, even coil burnout. This directly reduces the operational reliability of the spring vibrator and significantly shortens the overall lifespan of the equipment.

[0004] To address the heat dissipation problem of excitation coils, existing technologies mainly employ natural cooling or the addition of external cooling structures. However, these methods suffer from low cooling efficiency and are insufficient to meet the long-term cooling requirements of the coils. While water cooling offers strong heat dissipation capabilities, it suffers from drawbacks such as complex structural design, difficulties in coolant input and recovery, and a tendency to cause electrical insulation failure. Due to the limited internal installation space and extremely high electrical insulation safety requirements of spring oscillators, water cooling is unsuitable for their operating conditions. Therefore, there is an urgent need to propose a heat dissipation solution for excitation coils that balances heat dissipation efficiency, structural simplicity, and insulation safety. Summary of the Invention

[0005] The present invention aims to solve the problems of low natural heat dissipation efficiency of excitation coils, complex water-cooled heat dissipation structure and poor electrical safety in existing spring oscillators, and to provide an active air-cooled heat dissipation structure for excitation coils.

[0006] To solve the above problems, this application adopts the following technical solution:

[0007] An active air-cooled heat dissipation structure for excitation coils includes an excitation coil insulation plate, a fixed coil insulation plate, a set of excitation coil positioning components, a set of fixed coil positioning components, two temperature sensors, and two sets of cooling fans.

[0008] The excitation coil insulation plate and the fixed coil insulation plate are arranged parallel to each other. A set of excitation coils is set on the excitation coil insulation plate, and a set of fixed coils is fixedly set on the fixed coil insulation plate. The excitation coils are fixed to the excitation coil insulation plate by a set of excitation coil positioning pieces, and the fixed coils are fixed to the fixed coil insulation plate by a set of fixed coil positioning pieces. A set of cooling fans for cooling the excitation coils is installed on the excitation coil insulation plate, and a set of cooling fans for cooling the fixed coils is installed on the fixed coil insulation plate. The excitation coil insulation plate slides relative to the fixed coil insulation plate on the guide rod of the excitation coil. A temperature sensor is installed on both the excitation coil insulation plate and the fixed coil insulation plate.

[0009] Furthermore, the excitation coil insulation plate includes an excitation coil fan fixing plate and an excitation coil clamping fixing plate;

[0010] The excitation coil clamping plate has multiple blind holes. A set of excitation coils is installed in the blind holes of the excitation coil clamping plate. The excitation coil fan fixing plate is fastened to the excitation coil clamping plate and clamps and fixes the set of excitation coils. The excitation coil fan fixing plate and the excitation coil clamping plate are fixed by bolts. A set of cooling fans is installed on the excitation coil fan fixing plate, and the set of cooling fans is set corresponding to the set of excitation coils to dissipate heat from the set of excitation coils.

[0011] Furthermore, the fixed coil insulation plate includes a fixed coil fan fixing plate and a fixed coil clamping fixing plate;

[0012] The fixed coil clamping plate has multiple blind holes. A set of fixed coils is installed in the blind holes of the fixed coil clamping plate. The fixed coil fan fixing plate is fastened to the fixed coil clamping plate and clamps and fixes the set of fixed coils. The fixed coil fan fixing plate and the fixed coil clamping plate are fixed by bolts. A set of cooling fans is installed on the fixed coil fan fixing plate, and the set of cooling fans is set in correspondence with the set of fixed coils to dissipate heat from the set of excitation coils.

[0013] Furthermore, it also includes four guide rod sleeves;

[0014] Four guide rods are mounted on the excitation coil insulation plate, and the excitation coil insulation plate slides on the guide rods of the excitation coil via the four guide rods.

[0015] Furthermore, the number of excitation coils in a set is four, arranged in a 2×2 plane; the number of fixed coils in a set is also four, arranged in a 2×2 plane.

[0016] Furthermore, a set of excitation coil positioning components includes four excitation coil thermal conductive silicone pads, which are respectively filled on the excitation coil clamping and fixing plates. Each excitation coil clamping and fixing plate is correspondingly set with one excitation coil, and a cooling fan is correspondingly installed on each excitation coil clamping and fixing plate where the excitation coil thermal conductive silicone pad is installed.

[0017] A set of fixed coil positioning components includes four fixed coil thermal conductive silicone pads. The four fixed coil thermal conductive silicone pads are respectively filled on the fixed coil clamping plate, and each fixed coil thermal conductive silicone pad is set to correspond to one fixed coil. A cooling fan is installed on each fixed coil clamping plate on which the fixed coil thermal conductive silicone pad is installed.

[0018] Furthermore, the insulation plates of the excitation coil and the fixed coil have the same structure, and both are made of epoxy resin.

[0019] Furthermore, the excitation coil fan mounting plate is machined with air guide channels for ventilation and heat dissipation, and the fixed coil fan mounting plate is machined with air guide channels for ventilation and heat dissipation.

[0020] Furthermore, the temperature sensor is an NTC temperature sensor.

[0021] Furthermore, there are eight cooling fans, and the cooling fans are brushless DC fans.

[0022] Compared with the prior art, this application has the following technical advantages:

[0023] 1. This application combines automatic control technology and physical heat conduction methods to construct a directional airflow path within a limited insulating space. The heat generated by the excitation coil during operation is conducted to the insulating plate through a thermally conductive silicone pad. When the temperature sensor detects that the temperature has reached the set threshold, the DC fan is activated. Air flows into the plate along the air guide channel and then flows out from one side of the fan, carrying away the heat accumulated in the coil and the insulating plate, thereby achieving heat dissipation of the excitation coil.

[0024] 2. This application adopts air cooling, which is more compact, safer, and has higher heat dissipation efficiency than water cooling and other methods, enabling the excitation coil to work stably for a long time; the fan is controlled by a temperature sensor to achieve on-demand heat dissipation and reduce energy consumption.

[0025] 3. This application features dedicated cooling fans on both the excitation coil insulation plate and the fixed coil insulation plate, forming dual independent directional heat dissipation channels. Compared to existing natural and external heat dissipation structures, this represents a significant leap in heat dissipation efficiency. The fans blow air directly onto the coil body, quickly removing heat accumulated within the sealed insulation structure. Combined with a temperature sensor for real-time coil temperature monitoring, the heat dissipation rate can be adjusted promptly, fundamentally preventing overheating caused by prolonged energization and effectively blocking the causes of insulation degradation and coil aging.

[0026] 4. This application eliminates the complex piping system of existing water-cooled heat dissipation methods, directly integrating the cooling fan and temperature sensor onto the coil insulation board, forming an integrated design with the coil positioning components and guide rod sliding structure, eliminating the need for a large amount of additional installation space. This simple and compact structure perfectly suits the limited internal space of the spring vibrator, solving the technical pain points of water-cooling methods being unsuitable due to complex structures and difficulties in coolant access, while also reducing the overall assembly difficulty and subsequent maintenance costs of the equipment.

[0027] 5. This application relies on the double insulation protection of the excitation coil insulation plate and the fixed coil insulation plate, and mounts auxiliary components such as the cooling fan and temperature sensor on the insulation plate, ensuring that they do not form electrical contact with the excitation coil throughout the entire process. Compared with water cooling, which is prone to coolant leakage and electrical insulation failure, this solution completely eliminates electrical safety hazards from the structural design, perfectly meets the extremely high insulation safety requirements of the spring oscillator, and eliminates equipment failures caused by the cooling system.

[0028] 6. This application precisely addresses the two core issues of coil overheating and insulation safety, effectively slowing down the aging rate of the excitation coil and preventing coil burnout. Simultaneously, the sliding insulation plate structure, combined with an independent heat dissipation design, ensures that the coil maintains a stable operating temperature and insulation performance during reciprocating vibration, significantly improving the long-term operational reliability of the spring vibrator, substantially extending the service life of the overall equipment and core components, and reducing the frequency of equipment replacement and maintenance in engineering operations. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 A schematic diagram showing the thermal conductive silicone pad 5 and the excitation coil 6 mounted on the excitation coil clamping and fixing plate;

[0031] Figure 3 A schematic diagram showing the installation of the fixed coil 7 and the fixed coil thermal conductive silicone pad 8 on the fixed coil fan mounting plate. Detailed Implementation

[0032] Combination Figure 1 This embodiment describes an active air-cooled heat dissipation structure for an excitation coil, which includes an excitation coil insulation plate 3, a fixed coil insulation plate 4, a set of excitation coil positioning components, a set of fixed coil positioning components, two temperature sensors 1, and two sets of cooling fans 2.

[0033] The excitation coil insulation plate 3 and the fixed coil insulation plate 4 are arranged parallel to each other. A set of excitation coils 6 are set on the excitation coil insulation plate 3, and a set of fixed coils 7 are fixed on the fixed coil insulation plate 4. The set of excitation coils 6 is fixed to the excitation coil insulation plate 3 by a set of excitation coil positioning parts, and the set of fixed coils 7 is fixed to the fixed coil insulation plate 4 by a set of fixed coil positioning parts. A set of cooling fans 2 for cooling the set of excitation coils 6 is installed on the excitation coil insulation plate 3, and a set of cooling fans 2 for cooling the set of fixed coils 7 is installed on the fixed coil insulation plate 4. The excitation coil insulation plate 3 slides on the guide rod of the excitation coil relative to the fixed coil insulation plate 4. A temperature sensor 1 is installed on the excitation coil insulation plate 3 and the fixed coil insulation plate 4 respectively.

[0034] Combination Figure 1 and Figure 2 As shown, the excitation coil insulation plate 3 includes an excitation coil fan fixing plate and an excitation coil clamping fixing plate;

[0035] The excitation coil clamping plate has multiple blind holes. A set of excitation coils 6 are installed in the blind holes of the excitation coil clamping plate. The excitation coil fan fixing plate is fastened to the excitation coil clamping plate and clamps and fixes the set of excitation coils 6. The excitation coil fan fixing plate and the excitation coil clamping plate are fixed by bolts. A set of cooling fans 2 are installed on the excitation coil fan fixing plate, and the set of cooling fans 2 is corresponding to the set of excitation coils 6 for cooling the set of excitation coils 6.

[0036] Combination Figure 1 and Figure 3 As shown, the fixed coil insulation plate 4 includes a fixed coil fan fixing plate and a fixed coil clamping fixing plate;

[0037] The fixed coil clamping plate has multiple blind holes. A set of fixed coils 7 are installed in the blind holes of the fixed coil clamping plate. The fixed coil fan fixing plate is fastened to the fixed coil clamping plate and clamps and fixes the set of fixed coils 7. The fixed coil fan fixing plate and the fixed coil clamping plate are fixed by bolts. A set of cooling fans 2 are installed on the fixed coil fan fixing plate and are arranged corresponding to the set of fixed coils 7 to dissipate heat from the set of excitation coils 6.

[0038] Combination Figure 1 As shown, it also includes four guide rod sleeves 10;

[0039] Four guide rod sleeves 10 are installed on the excitation coil insulation plate 3, and the excitation coil insulation plate 3 slides on the guide rod of the excitation coil through the four guide rod sleeves 10.

[0040] Combination Figure 1 and Figure 2 As shown, there are four excitation coils 6 arranged in a 2×2 plane; there are also four fixed coils 7 arranged in a 2×2 plane.

[0041] Combination Figure 1 , Figure 2 and Figure 3 As shown, a set of excitation coil positioning components includes four excitation coil thermal conductive silicone pads 5. The four excitation coil thermal conductive silicone pads 5 are respectively filled on the excitation coil clamping and fixing plate, and each excitation coil clamping and fixing plate is correspondingly set with one excitation coil 6. A cooling fan 2 is correspondingly installed on each excitation coil clamping and fixing plate where the excitation coil thermal conductive silicone pad 5 is installed.

[0042] A set of fixed coil positioning components includes four fixed coil thermal conductive silicone pads 8. The four fixed coil thermal conductive silicone pads 8 are respectively filled on the fixed coil clamping and fixing plate, and each fixed coil thermal conductive silicone pad 8 is correspondingly set with one fixed coil 7. A cooling fan 2 is correspondingly installed on each fixed coil clamping and fixing plate on which the fixed coil thermal conductive silicone pad 8 is installed.

[0043] Combination Figure 1 , Figure 2 and Figure 3 As shown, the excitation coil insulation plate 3 and the fixed coil insulation plate 4 have the same structure, and both the excitation coil insulation plate 3 and the fixed coil insulation plate 4 are made of epoxy resin.

[0044] Combination Figure 1 , Figure 2 and Figure 3 As shown, the excitation coil fan mounting plate is machined with air guide channels 9 for ventilation and heat dissipation, and the fixed coil fan mounting plate is machined with air guide channels 9 for ventilation and heat dissipation. The air guide channels 9 are formed by slotting the coil inside the insulating plate to the side of the insulating plate. The number of air guide channels 9 machined on the excitation coil insulating plate 3 is one to four, and the number of air guide channels 9 machined on the fixed coil insulating plate 4 is one to four.

[0045] Combination Figure 1 , Figure 2 and Figure 3 As shown, temperature sensor 1 is an NTC temperature sensor. The probe of one temperature sensor 1 is located near the excitation coil 6 and is set inside the excitation coil insulation plate 3. The probe of the other temperature sensor 1 is located near the fixed coil 7 and is set inside the fixed coil insulation plate 4.

[0046] Combination Figure 1 , Figure 2 and Figure 3 As shown, there are eight cooling fans 2, and the cooling fans 2 are brushless DC fans. The excitation coil insulation plate 3 and the fixed coil insulation plate 4 are connected to the outside world through the air guide channel 9. When the cooling fans 2 are working, they dissipate the heat inside the excitation coil insulation plate 3 and the fixed coil insulation plate 4 into the air.

[0047] When the air-cooled heat dissipation structure of the present invention is in operation, firstly, the device is fixed under the overhead cable using a fixing device;

[0048] Secondly, during the cleaning operation, turn on the power of the equipment and control the power supply to supply current to the coil while simultaneously powering the heat dissipation device;

[0049] Furthermore, when the current flows through the fixed coil 7 and the excitation coil 6, the heat generated is conducted to the corresponding insulating plate through the thermally conductive silicone pad 5 of the excitation coil and the thermally conductive silicone pad 8 of the fixed coil.

[0050] Finally, when temperature sensor 1 detects that the temperature has reached the set threshold, cooling fan 2 is activated. Air flows into the board along the airflow channel and then flows out from one side of the fan, carrying away the heat accumulated in the coil and insulation board, thus dissipating heat from the excitation coil; when the temperature inside the board is lower than the set lower limit temperature, the fan turns off.

[0051] After cleaning, turn off the power to the equipment. The next step is to clean again, move the equipment to a different location, or finish cleaning.

Claims

1. An active air-cooled heat dissipation structure for excitation coils, characterized in that: It includes an excitation coil insulation plate (3), a fixed coil insulation plate (4), a set of excitation coil positioning components, a set of fixed coil positioning components, two temperature sensors (1), and two sets of cooling fans (2). The excitation coil insulation plate (3) and the fixed coil insulation plate (4) are arranged in parallel relative to each other. A set of excitation coils (6) are set on the excitation coil insulation plate (3), and a set of fixed coils (7) are fixed on the fixed coil insulation plate (4). A set of excitation coils (6) are fixed on the excitation coil insulation plate (3) by a set of excitation coil positioning parts, and a set of fixed coils (7) are fixed on the fixed coil insulation plate (4) by a set of fixed coil positioning parts. A set of cooling fans (2) for cooling the set of excitation coils (6) is installed on the excitation coil insulation plate (3), and a set of cooling fans (2) for cooling the set of fixed coils (7) is installed on the fixed coil insulation plate (4). The excitation coil insulation plate (3) slides on the guide rod of the excitation coil relative to the fixed coil insulation plate (4). A temperature sensor (1) is installed on the excitation coil insulation plate (3) and the fixed coil insulation plate (4) respectively.

2. The active air-cooled heat dissipation structure for excitation coils according to claim 1, characterized in that: The excitation coil insulation plate (3) includes an excitation coil fan fixing plate and an excitation coil clamping fixing plate; Multiple blind holes are machined on the excitation coil clamping and fixing plate. A set of excitation coils (6) are installed in the blind holes of the excitation coil clamping and fixing plate. The excitation coil fan fixing plate is fastened and fixed on the excitation coil clamping and fixing plate and clamps and fixes the set of excitation coils (6). The excitation coil fan fixing plate and the excitation coil clamping and fixing plate are fixed by bolts. A set of cooling fans (2) are installed on the excitation coil fan fixing plate and are set in correspondence with the set of excitation coils (6) for cooling the set of excitation coils (6).

3. The active air-cooled heat dissipation structure for excitation coils according to claim 1, characterized in that: The fixed coil insulation plate (4) includes a fixed coil fan fixing plate and a fixed coil clamping fixing plate; The fixed coil clamping plate has multiple blind holes. A set of fixed coils (7) are installed in the blind holes of the fixed coil clamping plate. The fixed coil fan fixing plate is fastened to the fixed coil clamping plate and clamps and fixes the set of fixed coils (7). The fixed coil fan fixing plate and the fixed coil clamping plate are fixed by bolts. A set of cooling fans (2) are installed on the fixed coil fan fixing plate and are set in correspondence with the set of fixed coils (7) for cooling the set of excitation coils (6).

4. The active air-cooled heat dissipation structure for excitation coils according to claim 2 or 3, characterized in that: It also includes four guide rod sleeves (10); Four guide rod sleeves (10) are installed on the excitation coil insulation plate (3), and the excitation coil insulation plate (3) slides on the guide rod of the excitation coil through the four guide rod sleeves (10).

5. The active air-cooled heat dissipation structure for excitation coils according to claim 1, characterized in that: The number of a set of excitation coils (6) is four, arranged in a 2×2 plane; the number of a set of fixed coils (7) is also four, arranged in a 2×2 plane.

6. The active air-cooled heat dissipation structure for excitation coils according to claim 4, characterized in that: A set of excitation coil positioning components includes four excitation coil thermal conductive silicone pads (5). The four excitation coil thermal conductive silicone pads (5) are respectively filled on the excitation coil clamping and fixing plate, and each excitation coil clamping and fixing plate is correspondingly set with one excitation coil (6). Each excitation coil clamping and fixing plate on which the excitation coil thermal conductive silicone pad (5) is installed has a corresponding cooling fan (2). A set of fixed coil positioning components includes four fixed coil thermal conductive silicone pads (8). The four fixed coil thermal conductive silicone pads (8) are respectively filled on the fixed coil clamping plate, and each fixed coil thermal conductive silicone pad (8) is correspondingly set with a fixed coil (7). Each fixed coil clamping plate on which the fixed coil thermal conductive silicone pad (8) is installed has a corresponding cooling fan (2).

7. The active air-cooled heat dissipation structure for excitation coils according to claim 6, characterized in that: The excitation coil insulation plate (3) and the fixed coil insulation plate (4) have the same structure. Both the excitation coil insulation plate (3) and the fixed coil insulation plate (4) are made of epoxy resin.

8. The active air-cooled heat dissipation structure for excitation coils according to claim 7, characterized in that: The excitation coil fan mounting plate is machined with air guide channels (9) for ventilation and heat dissipation, and the fixed coil fan mounting plate is machined with air guide channels (9) for ventilation and heat dissipation.

9. The active air-cooled heat dissipation structure for excitation coils according to claim 1, characterized in that: The temperature sensor (1) is an NTC temperature sensor.

10. The active air-cooled heat dissipation structure for excitation coils according to claim 1, characterized in that: There are eight cooling fans (2), and the cooling fans (2) are brushless DC fans.

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