Lightning protection device of transformer

Abstract

The utility model relates to the field of transformer lightning protection, in particular to a lightning protection device of a transformer. The utility model provides a lightning protection device of a transformer, which comprises a shell capable of protecting the transformer and a guide piece for transferring electricity absorbed by lightning protection. A lightning protection device of a transformer comprises a mounting base, a transformer, a connecting frame and the like, the transformer is arranged on the upper side of the mounting base in a sliding mode, and the connecting frame is connected to the right side of the mounting base. According to the utility model, the transformer is covered and protected through the first insulating shell, the transformer is secondarily protected through the second insulating shell, and when thunders come towards the transformer, the lightning rod and the lightning arrester can collect the received thunders, and then the thunders are transferred to the ground through the ground wire; the effects of preventing the overvoltage from damaging the insulation system of the transformer, preventing the transformer from being damaged by the overvoltage, avoiding short circuit or electric shock accidents, keeping the interior clean and dry and prolonging the service life of the transformer are achieved.

Description

Technical Field

[0001] The utility model relates to the field of lightning protection for transformers, and particularly relates to a lightning protection device for a transformer. Background Art

[0002] Transformer lightning protection refers to taking a series of technologies and measures to protect transformers from lightning overvoltage damage. Lightning is a powerful natural phenomenon. When lightning directly hits the power system or occurs nearby, it will generate extremely high voltages. These voltage waves will invade the transformer along the transmission line, posing a great threat to the insulation system of the transformer, and may cause insulation breakdown, damage or destruction of the transformer.

[0003] For existing transformer lightning protection, usually a lightning protection device is installed on the transformer to protect it from lightning. However, when it rains, the transformer will also be drenched by rain. Since rainwater is conductive, the transformer will be electrocuted, and then the transformer is damaged. At the same time, no guiding component for transferring electricity is provided on the lightning protection device, resulting in a reduced lightning protection effect.

[0004] Therefore, it is necessary to design a lightning protection device for a transformer that can protect the transformer with a casing and has a guiding component for transferring the electricity absorbed by lightning protection. Summary of the Utility Model

[0005] In order to overcome the shortcomings of existing transformer lightning protection, that is, when it rains, the transformer will also be drenched by rain. Since rainwater is conductive, the transformer will be electrocuted, and then the transformer is damaged. At the same time, no guiding component for transferring electricity is provided on the lightning protection device, resulting in a reduced lightning protection effect, the utility model provides a lightning protection device for a transformer that can protect the transformer with a casing and has a guiding component for transferring the electricity absorbed by lightning protection.

[0006] The technical implementation solution of the utility model is: A lightning protection device for a transformer includes an installation base, a transformer, a connecting frame, a rotating frame, a first insulating casing and a second insulating casing. The transformer is slidably arranged on the upper side of the installation base. A connecting frame is connected to the right side of the installation base. A rotating frame is rotatably connected to the connecting frame. A first insulating casing is connected to the rotating frame. A second insulating casing is connected to the installation base. The second insulating casing and the first insulating casing cooperate to protect the transformer.

[0007] Furthermore, a connecting block is provided on the installation base, and a card slot is provided on the transformer. The connecting block and the card slot cooperate with each other to fix the transformer on the installation base.

[0008] Furthermore, the middle of the first insulating casing is made of a transparent material, so as to facilitate observing the situation of the transformer.

[0009] Furthermore, it also includes an insulating support frame, a lightning protection net, lightning arresters, and a ground wire connector. An insulating support frame is connected to the installation base, a lightning protection net is connected to the insulating support frame, two lightning arresters are connected to the lightning protection net, and ground wire connectors are connected to both the left and right sides of the lightning protection net.

[0010] Furthermore, a lightning rod is connected to the lightning protection net.

[0011] Furthermore, an external ground wire is connected to the ground wire connector, and the electricity received by the lightning rod is transferred through the ground wire.

[0012] The utility model has the following advantages: The utility model covers and protects the transformer through the first insulating housing, and conducts secondary protection on the transformer through the second insulating housing. When lightning strikes the transformer, the lightning rod and lightning arresters will collect the received lightning, and then transfer the lightning to the ground through the ground wire, achieving the effect of preventing overvoltage from damaging the insulation system of the transformer, while protecting the transformer from overvoltage damage, avoiding short circuit or electric shock accidents, keeping the interior clean and dry, and extending the service life of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 is a structural schematic diagram of the utility model.

[0015] In the above drawings: 1: Installation base, 2: Transformer, 3: Insulating support frame, 4: Lightning protection net, 5: Lightning arrester, 6: Lightning rod, 7: Ground wire connector, 8: Connecting frame, 9: Rotating frame, 10: First insulating housing, 11: Second insulating housing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following further describes the utility model in conjunction with the drawings and embodiments.

[0017] A lightning protection device for a transformer, as Figure 1 - Figure 2As shown in the figure, it includes an installation base 1, a transformer 2, an insulating support frame 3, a lightning protection net 4, a lightning arrester 5, a lightning rod 6, a ground wire connector 7, a connecting frame 8, a rotating frame 9, a first insulating housing 10 and a second insulating housing 11. The transformer 2 is slidably arranged on the upper side of the installation base 1. There is a connecting block on the installation base 1, and a clamping groove is arranged on the transformer 2. The connecting block and the clamping groove cooperate with each other to fix the transformer 2 on the installation base 1. The installation base 1 is connected with an insulating support frame 3, the insulating support frame 3 is connected with a lightning protection net 4, two lightning arresters 5 are connected to the lightning protection net 4, and a lightning rod 6 is connected to the lightning protection net 4. A connecting frame 8 is connected to the right side of the installation base 1. The external grounding wire is connected to the ground wire connector 7, and the electricity received by the lightning rod 6 is transferred through the ground wire. Ground wire connectors 7 are connected to both the left and right sides of the lightning protection net 4. A rotating frame 9 is rotatably connected to the connecting frame 8, and a first insulating housing 10 is connected to the rotating frame 9. The middle of the first insulating housing 10 is made of a transparent material, so as to facilitate observing the situation of the transformer 2. A second insulating housing 11 is connected to the installation base 1, and the second insulating housing 11 and the first insulating housing 10 cooperate to protect the transformer 2.

[0018] When using this device, first place the installation base 1 in the lightning protection area, then snap the transformer 2 onto the installation base 1. After that, externally connect two ground wires to the ground wire connector 7. When encountering a thunderstorm, turn the first insulating housing 10 to the left so that the first insulating housing 10 and the second insulating housing 11 cooperate to cover and protect the transformer 2. The state of the transformer 2 can be observed through the transparent part of the first insulating housing 10. When the thunder strikes the transformer 2, the lightning rod 6 and the lightning arrester 5 will collect the received thunder, and then transfer the thunder to the ground through the ground wire, so as to be able to transfer the electricity received by the lightning rod 6, prevent overvoltage from damaging the insulation system of the transformer 2, and at the same time protect the transformer 2 from overvoltage damage, prevent the live part of the transformer 2 from directly contacting external objects or the human body, avoid short - circuit or electric shock accidents, keep the inside clean and dry, and extend the service life of the transformer 2.

[0019] Although the present utility model has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications can be made to the present utility model without departing from the principle and spirit scope of the present utility model defined by the claims. Therefore, the detailed description of the embodiments of this disclosure is only used to explain, rather than to limit the present utility model, and the scope of protection is defined by the content of the claims.

Claims

1. A lightning protection device for a transformer, characterized in that: The invention comprises a mounting base (1), a transformer (2), a connecting frame (8), a rotating frame (9), a first insulating shell (10) and a second insulating shell (11); the transformer (2) is slidably arranged on the upper side of the mounting base (1); the right side of the mounting base (1) is connected to the connecting frame (8); the rotating frame (9) is rotatably connected to the connecting frame (8); the first insulating shell (10) is connected to the rotating frame (9); the mounting base (1) is connected to the second insulating shell (11); the second insulating shell (11) cooperates with the first insulating shell (10) to protect the transformer (2).

2. A lightning protection device for a transformer according to claim 1, characterized in that: A connecting block is provided on the mounting base (1), and a clamping slot is provided on the transformer (2); the connecting block and the clamping slot cooperate with each other, thereby fixing the transformer (2) on the mounting base (1).

3. A lightning protection device for a transformer according to claim 2, characterized in that: The middle of the first insulating shell (10) is made of transparent material, thereby making it easy to observe the condition of the transformer (2).

4. A lightning protection device for a transformer according to claim 3, characterized in that: The invention also comprises an insulating support frame (3), a lightning protection net (4), a lightning arrester (5) and a grounding connector (7); the mounting base (1) is connected to the insulating support frame (3), the insulating support frame (3) is connected to the lightning protection net (4), the lightning protection net (4) is connected to two lightning arresters (5), and the left and right sides of the lightning protection net (4) are both connected to the grounding connector (7).

5. A lightning protection device for a transformer according to claim 4, characterized in that: A lightning rod (6) is connected to the lightning protection net (4).

6. A lightning protection device for a transformer according to claim 5, characterized in that: An external ground wire is connected to the ground wire connector (7), and the electricity received by the lightning rod (6) is transferred through the ground wire.

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