Lightning protection device for a transformer

Abstract

The utility model discloses a lightning arrester equipment for transformer, including the lightning receptor, the outer surface fixed mounting of lightning receptor has the lightning electrode, the bottom fixed mounting of lightning receptor has the down lead subassembly, the bottom fixed mounting of down lead subassembly has the reel, the bottom fixed mounting of reel has the ground assembly, the utility model relates to lightning protection technical field. The lightning arrester equipment for transformer, through the extension piece of lightning from the lightning receptor transmission to down lead subassembly, the lightning is dispersed and is conducted to the insulating ceramic seat in the extension piece among central shaft guide rod, inclined frame pole etc. structure, again through the further downward guidance of insulating tube, extension rod etc. part, the dispersion and the discharge of lightning of discharge ball and annular ring can assist simultaneously. The extension piece of down lead subassembly adopts the structure of many rods, many balls, can carry out the dispersion and the conduction of lightning current, avoid local current too big, the insulating ceramic seat and insulating tube play the insulating protection effect, prevent lightning to cause the misinjury of other parts of equipment.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection technology, specifically a lightning protection device for transformers. Background Technology

[0002] In power systems, transformers are core equipment for power transmission and transformation, and their safe and stable operation is crucial. However, lightning strikes are one of the main threats to transformer safety. Statistics show that transformer failures caused by lightning strikes account for a significant proportion of power equipment failures. These failures not only cause direct damage such as insulation breakdown and winding burnout, but also trigger large-scale power outages, resulting in substantial economic losses and social impact.

[0003] Traditional transformer lightning protection equipment, such as ordinary lightning rods and conventional surge arresters, has many shortcomings. Ordinary lightning rods have limited protection range and are prone to generating electromagnetic pulses and ground potential backflash during lightning strikes, which can interfere with or even damage transformers and surrounding sensitive electronic equipment. Conventional surge arresters often fail to meet the requirements for current carrying capacity, weather resistance, and insulation performance when dealing with strong lightning currents and complex environments (such as heavy pollution and extreme temperature and humidity), and their maintenance costs are high. For example, traditional gap-type surge arresters are gradually being phased out of the market due to their unstable protection characteristics. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model achieves this through the following technical solution: a lightning arrester for transformers, comprising: a lightning arrester, a lightning-attracting electrode fixedly installed on the outer surface of the lightning arrester, a down-leading assembly fixedly installed at the bottom of the lightning arrester, a winding frame fixedly installed at the bottom of the down-leading assembly, and a grounding assembly fixedly installed at the bottom of the winding frame; the lightning-attracting electrode on the lightning arrester actively attracts lightning and guides the lightning to the lightning arrester. The lightning-attracting electrode increases the lightning-attracting range and efficiency of the lightning arrester, enabling it to more actively capture lightning and reduce the probability of the transformer being struck by lightning.

[0005] The lead-down assembly includes an extension member, an insulating ceramic seat is fixedly installed inside the extension member, a positioning pad is fixedly installed on the outer surface of the insulating ceramic seat, an insulating tube is fixedly installed on the outer surface of the positioning pad, an extension rod is fixedly installed at the center of the outer surface of the insulating tube, a discharge ball is fixedly installed at the top of the extension rod, and a ring is fixedly installed inside the discharge ball.

[0006] Preferably, the extension component is fixedly installed at the bottom of the lightning arrester, the extension rod extends through the extension component to its outer side, and three positioning pads are provided, which are distributed circumferentially on the surface of the insulating ceramic base. The insulating ceramic base is fixedly installed at the middle of the top of the winding frame. Lightning is transmitted from the lightning arrester to the extension component of the downlead assembly. The central guide rod, inclined frame rod, and other structures in the extension component disperse and conduct the lightning to the insulating ceramic base, and then further guide it downward through the insulating tube, extension rod, and other components. At the same time, the discharge ball and ring can assist in the dispersion and discharge of lightning. The extension component of the downlead assembly adopts a multi-rod, multi-ball structure, which can disperse and conduct lightning current and avoid excessive local current; the insulating ceramic base and insulating tube provide insulation protection to prevent lightning from accidentally damaging other components of the equipment.

[0007] Preferably, the extension includes a column, a central guide rod is fixedly installed on the top of the column, and an inclined frame rod is fixedly installed on the outer surface of the central guide rod. There are three inclined frame rods, and a ball is fixedly installed on the outer surface of each of the three inclined frame rods.

[0008] Preferably, the column is fixedly installed at the middle of the top of the insulating ceramic base, the ball is sleeved on the outer surface of the extension rod, and the central guide rod is fixedly installed at the bottom of the lightning arrester.

[0009] Preferably, the winding frame includes a connecting cylinder, on the outer surface of which a wiring groove is fixedly installed. A winding ring is fixedly installed at the bottom of the connecting cylinder, and the winding ring is fixedly installed on the top of the grounding assembly. A lightning protection wire, made of iron wire, is connected inside the wiring groove and is coiled on the surface of the winding ring. The lower part of the lightning protection wire is buried in the soil. When lightning is transmitted to the lightning protection wire, the lightning current can be buffered to a certain extent, making the current transmission more stable and reducing the impact of instantaneous large current on the equipment.

[0010] Preferably, the grounding assembly includes two frame plates. Connecting rods are fixedly installed on the outer edges of both frame plates. Three connecting rods are provided, and mounting rods are fixedly installed at the bottom of each of the three connecting rods. A round pad is fixedly installed at the bottom of each mounting rod. Lightning is ultimately transmitted to the round pad through the frame plates, connecting rods, and mounting rods of the grounding assembly, and then conducted into the ground by the round pad, completing the entire lightning protection process. The structure of multiple connecting rods, multiple mounting rods, and round pads increases the grounding area, improves the stability and reliability of the grounding, and ensures that lightning can be efficiently conducted into the ground.

[0011] This utility model provides a lightning protection device for transformers. It has the following beneficial effects: I. The lightning protection device for this transformer transmits lightning from the lightning arrester to the extension of the downconductor assembly. The extension assembly's central guide rod, inclined support rod, and other structures disperse and conduct the lightning to the insulating ceramic base. From there, it is further guided downwards through insulating tubes, extension rods, and other components. Simultaneously, discharge spheres and rings assist in the dispersion and discharge of lightning. The downconductor assembly's extension uses a multi-rod, multi-sphere structure to disperse and conduct lightning current, preventing excessive local current. The insulating ceramic base and insulating tubes provide insulation protection, preventing lightning from accidentally damaging other components of the equipment.

[0012] 2. The transformer uses a lightning protection device, which is connected to the inside of the wiring slot with a lightning protection wire. The lightning protection wire is made of iron wire and is coiled on the surface of the winding ring. The lower part of the lightning protection wire is buried in the soil. When lightning is transmitted to the lightning protection wire, it can buffer the lightning current to a certain extent, making the current transmission more stable and reducing the impact of instantaneous large current on the equipment.

[0013] Third, the lightning protection equipment used in this transformer transmits lightning strikes through the grounding assembly's frame, connecting rods, and mounting rods to the circular pad, which then conducts the lightning into the ground, completing the entire lightning protection process. The structure of multiple connecting rods, multiple mounting rods, and the circular pad increases the grounding area, improves the stability and reliability of the grounding, and ensures that lightning can be efficiently conducted into the ground. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle; Figure 3 This is a schematic diagram of the connection structure between the grounding component and the downlead component of this utility model; Figure 4 This is an enlarged structural schematic diagram of the grounding component of this utility model; Figure 5 This is a schematic diagram of the structure of the lead-out component of this utility model; Figure 6 This is a schematic diagram of the structure of the extension component of this utility model; Figure 7 This is an enlarged structural schematic diagram of the winding frame of this utility model.

[0015] In the diagram: 1. Grounding assembly; 11. Frame plate; 12. Mounting rod; 13. Connecting rod; 14. Round pad; 2. Winding frame; 21. Connecting cylinder; 22. Wiring groove; 23. Winding ring; 3. Downlead assembly; 31. Extension piece; 311. Inclined frame pole; 312. Sleeve ball; 313. Central guide rod; 314. Column; 32. Circular ring; 33. Positioning pad; 34. Insulating ceramic seat; 35. Insulating tube; 36. Discharge ball; 37. Extension rod; 4. Lightning arrester; 5. Lightning electrode. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] First embodiment, such as Figures 1 to 7 As shown, this utility model provides a technical solution: a lightning protection device for transformers, comprising: a lightning arrester 4, a lightning-attracting electrode 5 fixedly installed on the outer surface of the lightning arrester 4, a down-leading assembly 3 fixedly installed on the bottom of the lightning arrester 4, a winding frame 2 fixedly installed on the bottom of the down-leading assembly 3, and a grounding assembly 1 fixedly installed on the bottom of the winding frame 2; the lightning-attracting electrode 5 on the lightning arrester 4 actively attracts lightning and guides the lightning to the lightning arrester 4. The lightning-attracting electrode 5 increases the lightning-attracting range and efficiency of the lightning arrester 4, enabling it to more actively capture lightning and reduce the probability of the transformer being struck by lightning.

[0018] The lead-down assembly 3 includes an extension 31, an insulating ceramic seat 34 is fixedly installed inside the extension 31, a positioning pad 33 is fixedly installed on the outer surface of the insulating ceramic seat 34, an insulating tube 35 is fixedly installed on the outer surface of the positioning pad 33, an extension rod 37 is fixedly installed at the axial center of the outer surface of the insulating tube 35, a discharge ball 36 is fixedly installed at the top end of the extension rod 37, and a ring 32 is fixedly installed inside the discharge ball 36.

[0019] Preferably, the extension member 31 is fixedly installed at the bottom of the lightning arrester 4, and the extension rod 37 extends through the extension member 31 to its outer side. Three positioning pads 33 are provided, arranged circumferentially on the surface of the insulating ceramic base 34. The insulating ceramic base 34 is fixedly installed at the middle of the top of the winding frame 2. Lightning is transmitted from the lightning arrester 4 to the extension member 31 of the downconductor assembly. The central guide rod 313, inclined frame rod 311, and other structures in the extension member disperse and conduct the lightning to the insulating ceramic base 34, and then further guide it downwards through components such as the insulating tube 35 and the extension rod 37. Simultaneously, the discharge ball 36 and the ring 32 assist in the dispersion and discharge of lightning. The extension member 31 of the downconductor assembly adopts a multi-rod, multi-ball structure, which can disperse and conduct lightning current, avoiding excessive local current. The insulating ceramic base 34 and the insulating tube 35 provide insulation protection, preventing lightning from accidentally damaging other components of the equipment.

[0020] Preferably, the extension 31 includes a column 314, a central guide rod 313 is fixedly installed on the top of the column 314, an inclined support rod 311 is fixedly installed on the outer surface of the central guide rod 313, and three inclined support rods 311 are provided, and a ball 312 is fixedly installed on the outer surface of each of the three inclined support rods 311.

[0021] Preferably, the column 314 is fixedly installed at the middle of the top of the insulating ceramic base 34, the ball 312 is sleeved on the outer surface of the extension rod 37, and the central guide rod 313 is fixedly installed at the bottom of the lightning arrester 4.

[0022] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figure 3 , Figure 4 and Figure 7 As shown, preferably, the winding frame 2 includes a connecting cylinder 21, with a wiring groove 22 fixedly installed on the outer surface of the connecting cylinder 21. A winding ring 23 is fixedly installed at the bottom of the connecting cylinder 21, and the winding ring 23 is fixedly installed on the top of the grounding assembly 1. A lightning protection wire is connected inside the wiring groove 22. The lightning protection wire is made of iron wire and is coiled on the surface of the winding ring 23. The lower part of the lightning protection wire is buried in the soil. When lightning is transmitted to the lightning protection wire, the lightning current can be buffered and conducted to a certain extent, making the current conduction more stable and reducing the impact of instantaneous large current on the equipment.

[0023] Preferably, the grounding assembly 1 includes two frame plates 11. Connecting rods 13 are fixedly installed on the outer sides of both frame plates 11. Three connecting rods 13 are provided, and mounting rods 12 are fixedly installed at the bottom of each of the three connecting rods 13. A circular pad 14 is fixedly installed at the bottom of each mounting rod 12. Lightning is ultimately transmitted to the circular pad 14 through the frame plates 11, connecting rods 13, and mounting rods 12 of the grounding assembly 1, and then conducted into the ground by the circular pad, completing the entire lightning protection process. The structure of multiple connecting rods 13, multiple mounting rods 12, and circular pads 14 increases the grounding area, improves the stability and reliability of the grounding, and ensures that lightning can be efficiently conducted into the ground.

[0024] In use, the lightning-attracting electrode 5 on the lightning arrester 4 actively attracts lightning and guides it to the lightning arrester 4. The lightning-attracting electrode 5 increases the lightning-attracting range and efficiency of the lightning arrester 4, enabling it to more actively capture lightning and reduce the probability of the transformer being struck by lightning.

[0025] Lightning strikes from the lightning arrester 4 to the extension 31 of the downconductor assembly. The central guide rod 313 and inclined support rod 311 within the extension disperse and conduct the lightning to the insulating ceramic base 34. From there, it is further guided downwards through components such as the insulating tube 35 and extension rod 37. Simultaneously, the discharge ball 36 and ring 32 assist in the dispersion and discharge of the lightning. The extension 31 of the downconductor assembly employs a multi-rod, multi-ball structure to disperse and conduct the lightning current, preventing excessive local current. The insulating ceramic base 34 and insulating tube 35 provide insulation protection, preventing accidental damage to other components of the equipment from lightning strikes.

[0026] The wiring trough 22 is internally connected to a lightning protection wire, which is made of iron wire and is coiled on the surface of the winding ring 23. The lower part of the lightning protection wire is buried in the soil. When lightning is transmitted to the lightning protection wire, it can buffer the lightning current to a certain extent, making the current transmission more stable and reducing the impact of instantaneous large current on the equipment.

[0027] Lightning is ultimately transmitted to the circular pad 14 via the frame plate 11, connecting rod 13, and mounting rod 12 of the grounding component 1, and then conducted into the ground by the circular pad, completing the entire lightning protection process. The structure of multiple connecting rods 13, multiple mounting rods 12, and circular pad 14 increases the grounding area, improves the stability and reliability of grounding, and ensures that lightning can be efficiently conducted into the ground.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightning protection device for a transformer, characterized in that, include: Lightning arrester (4), lightning electrode (5) is fixedly installed on the outer surface of the lightning arrester (4), down conductor assembly (3) is fixedly installed at the bottom of the lightning arrester (4), winding frame (2) is fixedly installed at the bottom of the down conductor assembly (3), and grounding assembly (1) is fixedly installed at the bottom of the winding frame (2). The lead-down assembly (3) includes an extension (31), an insulating ceramic seat (34) is fixedly installed inside the extension (31), a positioning pad (33) is fixedly installed on the outer surface of the insulating ceramic seat (34), an insulating tube (35) is fixedly installed on the outer surface of the positioning pad (33), an extension rod (37) is fixedly installed at the axial center of the outer surface of the insulating tube (35), a discharge ball (36) is fixedly installed at the top end of the extension rod (37), and a ring (32) is fixedly installed inside the discharge ball (36).

2. The lightning protection device for a transformer according to claim 1, characterized in that: The extension member (31) is fixedly installed at the bottom of the lightning arrester (4), and the extension rod (37) extends through the extension member (31) to its outer side. There are three positioning pads (33), which are distributed in a circular shape on the surface of the insulating ceramic seat (34). The insulating ceramic seat (34) is fixedly installed at the middle of the top of the winding frame (2).

3. A lightning arrester for a transformer according to claim 2, characterized in that: The extension (31) includes a column (314), a central guide rod (313) is fixedly installed on the top of the column (314), and an inclined frame rod (311) is fixedly installed on the outer surface of the central guide rod (313). There are three inclined frame rods (311), and a ball (312) is fixedly installed on the outer surface of each of the three inclined frame rods (311).

4. A lightning arrester for a transformer according to claim 3, characterized in that: The column (314) is fixedly installed at the middle of the top of the insulating ceramic base (34), the ball (312) is sleeved on the outer surface of the extension rod (37), and the central guide rod (313) is fixedly installed at the bottom of the lightning arrester (4).

5. A lightning arrester for a transformer according to claim 1, characterized in that: The winding frame (2) includes a connecting cylinder (21), a wiring groove (22) is fixedly installed on the outer surface of the connecting cylinder (21), a winding ring (23) is fixedly installed at the bottom of the connecting cylinder (21), and the winding ring (23) is fixedly installed on the top of the grounding assembly (1).

6. A lightning arrester for a transformer according to claim 5, characterized in that: The grounding assembly (1) includes a frame plate (11), two of which are provided. A connecting rod (13) is fixedly installed on the side of the outer surface of each of the two frames (11). There are three connecting rods (13), and an installation rod (12) is fixedly installed at the bottom of each of the three connecting rods (13). A round pad (14) is fixedly installed at the bottom of the installation rod (12).

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