A lightning protection device for power transformers

Abstract

The utility model relates to transformer technical field discloses a lightning -resistant power transformer protection device, including transformer, the transformer outer wall is provided with lightning protection component, and the transformer bottom is provided with energy -dissipating component. The utility model discloses through personnel rotation handle drive screw rod is screwed in the fixed plate, promotes the connecting plate to move down, and the guiding rod is fixed in the connecting plate top, and the guiding rod slides along the fixed plate inner wall, and ensures the stable movement, makes the ground insertion insert into the soil, establishes reliable ground passage, when encounters the lightning stroke, the lightning rod gives priority to and meets the thunderbolt, and the lightning current passes through the current -conducting wire conduction to the ground insertion, finally through the ground insertion and leads into the earth, avoids the lightning current direct invasion transformer ontology, and the rubber block fixed lightning rod and the connection of transformer, plays the insulation isolation function simultaneously, prevents the lightning current and diffuses in disorder to transformer shell, thereby reduced the maintenance frequency of transformer, improved the service life of transformer.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a lightning protection device for power transformers. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are the primary coil, the secondary coil, and the iron core (magnetic core). Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer).

[0003] The utility model, with publication number CN216528285U, discloses an outdoor power transformer protection device, belonging to the field of transformer protection technology. It includes a base, a housing at the top of the base, fans at both ends of the housing, water pipes corresponding to the fans on both sides of the housing's interior, and the water pipes connected to the housing via mounting plates. A water tank is located at the top of the housing. A water pump is installed between one end of the water pipe and the water tank, and a second water pump is installed between the other end of the water pipe and the water tank. This utility model utilizes water pipes on both sides of the housing's interior, with the first water pump supplying water from the tank into the water pipes. When the fans blow air, the air passes through the water pipes, reducing the temperature of the fan-blown air and increasing the cooling speed inside the housing, thereby improving the transformer's heat dissipation efficiency. Used water is recycled back into the water tank by the second water pump, cooled by fins, and reused, achieving water recycling.

[0004] During outdoor thunderstorms, the water tank, a metal or non-metal water storage component installed at the top of the enclosure, is higher than the transformer body and enclosure. In thunderstorms, it is a prime target for direct lightning strikes. When lightning strikes, the powerful lightning current will be directly conducted to the transformer body or base through the connection structure between the water tank and the enclosure, which may break through the transformer insulation layer, causing core component failures such as winding short circuits and core damage, increasing the maintenance frequency and reducing the service life of the transformer. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a power transformer protection device for lightning strike protection.

[0006] This utility model is achieved by the following technical solution: a power transformer protection device for lightning strike protection, including a transformer, a lightning protection component is provided on the outer wall of the transformer, an energy dissipation component is provided at the bottom of the transformer, and a heat dissipation component is provided on the inner wall of the transformer;

[0007] The lightning protection assembly includes a fixed plate, with a threaded rod threadedly connected internally to the fixed plate. A handle is fixedly connected to the top of the threaded rod, and a connecting plate is rotatably connected to the end of the threaded rod away from the handle. A guide rod is fixedly connected to the top of the connecting plate and slidably connected to the inner wall of the fixed plate. A grounding plug is fixedly connected to the outer wall of the connecting plate, with a conductor wire fixedly connected to the top of the grounding plug. A lightning rod is fixedly connected to the end of the conductor wire away from the grounding plug, and a rubber block is fixedly connected to the outer wall of the lightning rod. The rubber block is fixedly connected to the outer wall of the transformer.

[0008] With the above technical solution, when struck by lightning, the lightning rod will preferentially intercept the lightning strike. The lightning current will be conducted to the grounding plug through the conductor and finally into the ground through the grounding plug, thus preventing the lightning current from directly entering the transformer body. The rubber block fixes the connection between the lightning rod and the transformer and also plays an insulating role, preventing the lightning current from spreading disorderly to the transformer shell, thereby reducing the maintenance frequency of the transformer and improving the service life of the transformer.

[0009] As a further improvement to the above solution, the energy-consuming component includes a support plate, which is fixedly connected to the outer wall of a fixed plate, and the outer wall of the support plate is provided with a sliding groove.

[0010] As a further improvement to the above solution, a guide block is slidably connected to the outer wall of the chute, the guide block is fixedly connected to the outer wall of the transformer, and a sliding rod is fixedly connected to the bottom of the transformer.

[0011] As a further improvement to the above solution, a high-strength spring is sleeved on the outer wall of the sliding rod, a limit plate is fixedly connected to the end of the sliding rod away from the transformer, a support plate is slidably connected to the outer wall of the sliding rod, and the support plate is fixedly connected to the outer wall of the bracket plate.

[0012] With the above technical solution, when lightning strikes and generates instantaneous impact force on the transformer, the transformer drives the sliding rod to slide along the inner wall of the support plate, thereby compressing the high-strength spring and converting the impact energy into the elastic potential energy of the spring. The energy is consumed through the deformation process, reducing the transmission of impact force to the core components of the transformer.

[0013] As a further improvement to the above solution, the heat dissipation component includes a dustproof plate, which is fixedly connected inside the transformer. A protective frame is fixedly connected to the inner wall of the transformer, and ventilation holes are provided inside the protective frame. A motor is fixedly connected to the top of the protective frame.

[0014] As a further improvement to the above solution, a worm is fixedly connected to the output end of the motor, a worm gear is meshed with the worm gear, a rotating rod is fixedly connected to the inner wall of the worm gear, a fan blade is fixedly connected to the outer wall of the rotating rod, a protective plate is rotatably connected to the outer wall of the rotating rod, and the protective plate is fixedly connected to the inner wall of the transformer.

[0015] Through the above technical solution, the motor drives the worm to rotate, the worm meshes with the worm wheel to make the rotating rod rotate, and the rotating rod drives the fan blade to rotate at high speed to generate airflow. The airflow flows through the ventilation holes opened in the protective frame to carry away the heat inside the transformer.

[0016] As a further improvement to the above solution, a fixing block is fixedly connected to the top of the transformer, and a rain shield is fixedly connected to the end of the fixing block away from the transformer.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention allows a person to rotate a handle, causing a threaded rod to rotate within the fixed plate, thus pushing the connecting plate downwards. A guide rod is fixed at the top of the connecting plate and slides along the inner wall of the fixed plate to ensure stable movement. This allows the grounding plug to be inserted into the soil, establishing a reliable grounding path. When struck by lightning, the lightning rod preferentially intercepts the lightning strike. The lightning current is conducted through a conductor to the grounding plug and ultimately into the earth, preventing the lightning current from directly intruding into the transformer body. The rubber block secures the connection between the lightning rod and the transformer and also provides insulation, preventing the lightning current from spreading disorderly to the transformer casing. This reduces the frequency of transformer maintenance and extends the transformer's service life.

[0019] This invention utilizes the principle that when lightning strikes a transformer, the transformer causes a sliding rod to slide along the inner wall of the support plate, thereby compressing a high-strength spring. This converts the impact energy into the elastic potential energy of the spring, dissipating energy through deformation and reducing the transmission of the impact force to the core components of the transformer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the lightning protection component structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the energy-consuming component structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the heat dissipation component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the rain shield structure of this utility model.

[0025] Explanation of key symbols:

[0026] 1. Transformer; 2. Lightning protection components; 201. Fixing plate; 202. Threaded rod; 203. Handle; 204. Connecting plate; 205. Guide rod; 206. Grounding plug; 207. Conductor wire; 208. Lightning rod; 209. Rubber block; 3. Energy dissipation components; 301. Support plate; 302. Slide groove; 303. Guide block; 304. Sliding rod; 305. High-strength spring; 306. Limiting plate; 307. Support plate; 4. Heat dissipation components; 401. Dustproof plate; 402. Protective frame; 403. Ventilation hole; 404. Motor; 405. Worm gear; 406. Worm wheel; 407. Rotating rod; 408. Fan blade; 409. Protective plate; 5. Fixing block; 6. Rain shield. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] Example:

[0029] Please combine Figure 1-5 This embodiment of a lightning protection device for a power transformer includes a transformer 1, a lightning protection component 2 installed on the outer wall of the transformer 1, an energy dissipation component 3 installed at the bottom of the transformer 1, and a heat dissipation component 4 installed on the inner wall of the transformer 1.

[0030] The lightning protection component 2 includes a fixed plate 201, a threaded rod 202 is threadedly connected inside the fixed plate 201, a handle 203 is fixedly connected to the top of the threaded rod 202, a connecting plate 204 is rotatably connected to the end of the threaded rod 202 away from the handle 203, a guide rod 205 is fixedly connected to the top of the connecting plate 204, the guide rod 205 is slidably connected to the inner wall of the fixed plate 201, a grounding plug 206 is fixedly connected to the outer wall of the connecting plate 204, a guide wire 207 is fixedly connected to the top of the grounding plug 206, a lightning rod 208 is fixedly connected to the end of the guide wire 207 away from the grounding plug 206, a rubber block 209 is fixedly connected to the outer wall of the lightning rod 208, and the rubber block 209 is fixedly connected to the outer wall of the transformer 1.

[0031] The energy-consuming component 3 includes a support plate 301, which is fixedly connected to the outer wall of the fixed plate 201. A groove 302 is provided on the outer wall of the support plate 301.

[0032] A guide block 303 is slidably connected to the outer wall of the slide 302. The guide block 303 is fixedly connected to the outer wall of the transformer 1. A sliding rod 304 is fixedly connected to the bottom of the transformer 1.

[0033] A high-strength spring 305 is sleeved on the outer wall of the sliding rod 304. A limit plate 306 is fixedly connected to the end of the sliding rod 304 away from the transformer 1. A support plate 307 is slidably connected to the outer wall of the sliding rod 304. The support plate 307 is fixedly connected to the outer wall of the bracket plate 301.

[0034] The heat dissipation component 4 includes a dustproof plate 401, which is fixedly connected inside the transformer 1. A protective frame 402 is fixedly connected to the inner wall of the transformer 1. A ventilation hole 403 is provided inside the protective frame 402. A motor 404 is fixedly connected to the top of the protective frame 402.

[0035] A worm gear 405 is fixedly connected to the output end of the motor 404. A worm wheel 406 is meshed with the worm gear 405. A rotating rod 407 is fixedly connected to the inner wall of the worm wheel 406. A fan blade 408 is fixedly connected to the outer wall of the rotating rod 407. A protective plate 409 is rotatably connected to the outer wall of the rotating rod 407. The protective plate 409 is fixedly connected to the inner wall of the transformer 1.

[0036] A fixing block 5 is fixedly connected to the top of transformer 1, and a rain shield 6 is fixedly connected to the end of fixing block 5 away from transformer 1.

[0037] The implementation principle of a lightning protection device for a power transformer in this application embodiment is as follows: When a person rotates the handle 203, the threaded rod 202 rotates within the fixed plate 201, pushing the connecting plate 204 downwards. A guide rod 205 is fixed at the top of the connecting plate 204, and the guide rod 205 slides along the inner wall of the fixed plate 201 to ensure stable movement, allowing the grounding plug 206 to be inserted into the underground soil, establishing a reliable grounding path. When struck by lightning, the lightning rod 208 preferentially intercepts the lightning strike. The lightning current is conducted through the conductor 207 to the grounding plug 206, and finally guided to the ground, preventing the lightning current from directly intruding into the transformer 1 body. The rubber block 209 secures the connection between the lightning rod 208 and the transformer 1, while also providing insulation to prevent the lightning current from spreading disorderly to the transformer 1 casing, thereby reducing the maintenance frequency of the transformer 1 and increasing its service life. The transformer 1 slides along the groove 302 opened in the support plate 301 via the guide block 303. When a lightning strike generates an instantaneous impact force on the transformer 1, the transformer 1 drives the sliding rod 304 along the support plate 301. The inner wall of plate 307 slides, thereby compressing the high-strength spring 305 of transformer 1, converting the impact energy into the elastic potential energy of the spring. Energy is dissipated through deformation, reducing the transmission of impact force to the core components of transformer 1. After the impact, the high-strength spring 305 returns to its original deformation, resetting transformer 1 and reducing the risk of mechanical damage. The limiting plate 306 limits the sliding rod 304 to prevent it from detaching from the support plate 307. The motor 404 drives the worm gear 405 to rotate, and the worm gear 405 meshes with the worm wheel 4. 06 rotates the rotating rod 407, which drives the fan blade 408 to rotate at high speed to generate airflow. The airflow flows through the ventilation hole 403 opened in the protective frame 402, carrying away the heat inside the transformer 1. The dustproof plate 401 prevents external dust from entering the equipment. The protective plate 409 provides support for the rotating rod 407 and isolates the fan blade 408 from the internal components, ensuring a safe and stable heat dissipation process. The fixing block 5 on the top of the transformer 1 supports the rain shield 6, which can prevent rainwater from splashing directly on the top of the transformer 1, thereby protecting the transformer 1.

[0038] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A lightning protection device for power transformers, characterized in that, The transformer (1) is provided with a lightning protection component (2) on its outer wall, an energy dissipation component (3) on its bottom, and a heat dissipation component (4) on its inner wall. The lightning protection component (2) includes a fixing plate (201), a threaded rod (202) is threadedly connected inside the fixing plate (201), a handle (203) is fixedly connected to the top of the threaded rod (202), a connecting plate (204) is rotatably connected to the end of the threaded rod (202) away from the handle (203), a guide rod (205) is fixedly connected to the top of the connecting plate (204), the guide rod (205) is slidably connected to the inner wall of the fixing plate (201), a grounding plug (206) is fixedly connected to the outer wall of the connecting plate (204), a guide wire (207) is fixedly connected to the top of the grounding plug (206), a lightning rod (208) is fixedly connected to the end of the guide wire (207) away from the grounding plug (206), a rubber block (209) is fixedly connected to the outer wall of the lightning rod (208), and the rubber block (209) is fixedly connected to the outer wall of the transformer (1).

2. The lightning protection device for power transformers as described in claim 1, characterized in that: The energy-consuming component (3) includes a support plate (301), which is fixedly connected to the outer wall of the fixing plate (201), and the outer wall of the support plate (301) is provided with a sliding groove (302).

3. The lightning protection device for power transformers as described in claim 2, characterized in that: The outer wall of the chute (302) is slidably connected to a guide block (303), the guide block (303) is fixedly connected to the outer wall of the transformer (1), and a sliding rod (304) is fixedly connected to the bottom of the transformer (1).

4. The lightning protection device for power transformers as described in claim 3, characterized in that: A high-strength spring (305) is sleeved on the outer wall of the sliding rod (304). A limit plate (306) is fixedly connected to the end of the sliding rod (304) away from the transformer (1). A support plate (307) is slidably connected to the outer wall of the sliding rod (304). The support plate (307) is fixedly connected to the outer wall of the bracket plate (301).

5. The lightning protection device for power transformers as described in claim 1, characterized in that: The heat dissipation component (4) includes a dustproof plate (401), which is fixedly connected inside the transformer (1). A protective frame (402) is fixedly connected to the inner wall of the transformer (1). A ventilation hole (403) is provided inside the protective frame (402). A motor (404) is fixedly connected to the top of the protective frame (402).

6. The lightning protection device for power transformers as described in claim 5, characterized in that: The output end of the motor (404) is fixedly connected to a worm gear (405), which is meshed with a worm wheel (406). A rotating rod (407) is fixedly connected to the inner wall of the worm wheel (406), and a fan blade (408) is fixedly connected to the outer wall of the rotating rod (407). A protective plate (409) is rotatably connected to the outer wall of the rotating rod (407), and the protective plate (409) is fixedly connected to the inner wall of the transformer (1).

7. The lightning protection device for power transformers as described in claim 1, characterized in that: A fixing block (5) is fixedly connected to the top of the transformer (1), and a rain shield (6) is fixedly connected to the end of the fixing block (5) away from the transformer (1).

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