Lightning protection assembly of power electrical transformer

Abstract

The utility model relates to the technical field of transformers, and discloses a power electrical transformer lightning protection assembly which comprises a bottom plate, a discharge ground screen, a fixing plate and an inserting rod, the right side of the top of the bottom plate is fixedly connected with a transformer body, and an insulating cover is placed on the top of the bottom plate and located on the outer side of the transformer body. The top of the insulating cover is fixedly connected with a lightning rod. According to the lightning protection assembly of the power electrical transformer, thunder and lightning are attracted through the lightning rod, a space where a local electric field is concentrated is formed at the top end of the lightning rod so as to influence the development direction of thunder and lightning leader discharge and guide thunder and lightning to discharge towards the lightning rod, and then thunder and lightning current is led to the ground through the detonator and the corrugated pipe, so that the transformer body is protected; the problems that an existing electric power transformer is poor in anti-thunder effect when used, thunder and lightning are easily attracted in thunderstorm weather, the transformer is damaged, residents are powered off, and people cannot use the transformer conveniently are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a lightning protection component for a power electrical transformer. Background Art

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

[0003] After searching, the prior art provides "an electric power transformer that is easy to install", and its announcement number is: CN213242153U. The application includes a box body, the bottom of the box body is connected to a base, and heat sinks are fixed on both sides of the box body. A transformer is installed in the middle of the box body, and heat conducting plates are arranged on both sides of the box body. Slide grooves are opened on both sides of the bottom of the base. This kind of electric power transformer is provided with slide grooves, sliders, limit rods and bolts. When the user installs this kind of electric power transformer, slide grooves are opened on both sides of the bottom of the base, and sliders are arranged in the slide grooves. When the steel channel is wider, the mounting piece can be adjusted by the slide groove and the slider to the appropriate position, and then the limit rod is inserted into the corresponding limit hole. By placing the mounting piece inside the channel steel and then fixing it with bolts, this kind of electric power transformer is easier to fix and install.

[0004] Although the existing technology has met the user's needs to a certain extent, there are still certain defects in the use process. The specific problems are as follows: the power electrical transformer has poor lightning protection effect when in use. Lightning directly hitting the transformer may cause equipment damage, short circuit or even fire. It may also cause sudden changes in current and voltage inside the transformer through inductive coupling, thereby causing equipment damage or increased heat load.

[0005] In order to solve the above problems, we have made improvements and proposed a lightning protection component for power electrical transformers. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a lightning protection component for an electric power transformer, comprising a base plate, a discharge ground grid, a fixed plate and a plug rod, the right side of the top of the base plate being fixedly connected to a transformer body, an insulating cover being placed on the top of the base plate and located outside the transformer body, a lightning rod being fixedly connected to the top of the insulating cover, a detonator being connected to the right side of the lightning rod, a bellows being connected to the bottom of the bellows, the bottom of the bellows being connected to the top of the discharge ground grid, and a fixing box being fixedly connected to the left side of the top of the base plate.

[0007] Preferably, a servo motor is fixedly connected to the top of the fixed box, a screw is fixedly connected to the output end of the servo motor, a screw sleeve is threadedly connected to the surface of the screw, a connecting plate is fixedly connected to the front and back sides of the screw sleeve, a connecting rod is fixedly connected to the right side of the connecting plate, and the right side of the connecting rod is fixedly connected to the left side of the insulating cover.

[0008] Preferably, the front side and the back side of the inner wall of the fixed box are both provided with sliding grooves, the outer side of the connecting plate is fixedly connected with a sliding block, and the outer side of the sliding block is slidably connected to the inner cavity of the sliding groove.

[0009] Preferably, a through slot is provided on the front side and the back side of the right side of the fixing box, and the right side of the connecting rod passes through the inner cavity of the through slot and extends to the right side of the fixing box.

[0010] Preferably, mounting seats are fixedly connected around the top and bottom of the inner wall of the insulation cover, mounting blocks are fixedly connected around the inner side of the fixing plate, the mounting blocks are snap-fitted into the inner cavity of the mounting seats, and a dustproof net is inlaid on the inner surface of the fixing plate.

[0011] Preferably, a slot is provided on the inner surface of the mounting block, a card slot is provided on the bottom of the inner surface of the mounting seat, the bottom of the insertion rod passes through the inner cavity of the slot and is carded in the inner cavity of the card slot, and a pull plate is fixedly connected to the top of the insertion rod.

[0012] Compared with the prior art, the utility model provides a lightning protection component for a power electrical transformer, which has the following beneficial effects:

[0013] 1. The lightning protection component of the power and electrical transformer attracts lightning through the lightning rod, forms a space with a local electric field concentration at the top of the lightning rod, so as to affect the development direction of the lightning leader discharge, guide the lightning to discharge to the lightning rod, and then introduce the lightning current into the earth through the lightning conductor and the bellows, so as to protect the transformer body, and solve the problem that the existing power and electrical transformers have poor lightning protection effect when in use, and are easy to attract lightning in thunderstorms, resulting in damage to the transformer, and then causing power outages for residents, making it inconvenient for people to use.

[0014] 2. The lightning protection component of the power electrical transformer drives the screw to rotate through the output end of the servo motor. The screw drives the screw sleeve to move upward through the action of the thread. The screw sleeve drives the connecting plate to move upward. The connecting plate drives the insulating cover to move upward through the connecting rod, and the insulating cover is lifted so that the bottom of the insulating cover no longer contacts the top of the bottom plate, thereby avoiding electrical conduction and further improving the lightning protection effect of the transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the fixed box of the utility model in the right-side view;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the insulation cover of the utility model in a front view state;

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0020] Among them: 1. Base plate; 2. Insulation cover; 3. Fixed box; 4. Servo motor; 5. Through slot; 6. Lightning rod; 7. Pull plate; 8. Lightning conductor; 9. Bellows; 10. Discharge ground grid; 11. Fixed plate; 12. Dust net; 13. Screw; 14. Screw sleeve; 15. Connecting plate; 16. Connecting rod; 17. Slide; 18. Slider; 19. Mounting block; 20. Insert rod; 21. Slot; 22. Slot; 23. Mounting seat; 24. Transformer body. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 A lightning protection component for an electric power transformer comprises a base plate 1, a discharge ground grid 10, a fixing plate 11 and a plug rod 20. A transformer body 24 is fixedly connected to the right side of the top of the base plate 1. An insulating cover 2 is placed on the top of the base plate 1 and outside the transformer body 24. A lightning rod 6 is fixedly connected to the top of the insulating cover 2. A detonator 8 is connected to the right side of the lightning rod 6. A bellows 9 is connected to the bottom of the detonator 8. The bottom of the bellows 9 is connected to the top of the discharge ground grid 10. A fixing box 3 is fixedly connected to the left side of the top of the base plate 1.

[0023] Specifically, the top of the fixed box 3 is fixedly connected to the servo motor 4, the output end of the servo motor 4 is fixedly connected to the screw 13, the surface of the screw 13 is threadedly connected to the screw sleeve 14, the front and back sides of the screw sleeve 14 are fixedly connected to the connecting plate 15, the right side of the connecting plate 15 is fixedly connected to the connecting rod 16, and the right side of the connecting rod 16 is fixedly connected to the left side of the insulating cover 2.

[0024] Specifically, the front side and the back side of the inner wall of the fixed box 3 are both provided with a slide groove 17 , the outer side of the connecting plate 15 is fixedly connected with a slider 18 , and the outer side of the slider 18 is slidably connected in the inner cavity of the slide groove 17 .

[0025] Through the above technical solution, by providing the slide groove 17 and the slider 18, the stability of the connecting plate 15 and the screw sleeve 14 during the up and down movement is effectively improved.

[0026] Specifically, a through slot 5 is provided on the front side and the back side of the right side of the fixing box 3 , and the right side of the connecting rod 16 passes through the inner cavity of the through slot 5 and extends to the right side of the fixing box 3 .

[0027] Specifically, mounting seats 23 are fixedly connected around the top and bottom of the inner wall of the insulating cover 2, mounting blocks 19 are fixedly connected around the inner side of the fixing plate 11, the mounting blocks 19 are snapped into the inner cavity of the mounting seats 23, and a dustproof net 12 is inlaid on the inner surface of the fixing plate 11.

[0028] Through the above technical solution, by setting the dustproof net 12, the heat dissipation effect in the inner cavity of the insulating cover 2 is effectively improved, and at the same time, dust is prevented from entering the inner cavity of the insulating cover 2. By setting the mounting block 19 and the mounting seat 23, the disassembly and assembly of the fixing plate 11 is convenient, and the cleaning of the dustproof net 12 is also convenient.

[0029] Specifically, a slot 22 is provided on the inner surface of the mounting block 19, a slot 21 is provided on the bottom of the inner surface of the mounting seat 23, the bottom of the insertion rod 20 passes through the inner cavity of the slot 22 and is snapped into the inner cavity of the slot 21, and the top of the insertion rod 20 is fixedly connected with a pull plate 7.

[0030] Through the above technical solution, the insertion rod 20 is provided to limit the mounting block 19, thereby preventing the fixing plate 11 from falling off, and effectively improving the fixing effect of the fixing plate 11.

[0031] When in use, first, the output end of the servo motor 4 drives the screw 13 to rotate, and the screw 13 drives the screw sleeve 14 to move upward through the action of the thread, and the screw sleeve 14 drives the connecting plate 15 to move upward, and the connecting plate 15 drives the insulating cover 2 to move upward through the connecting rod 16, and the insulating cover 2 is lifted, so that the bottom of the insulating cover 2 is no longer in contact with the top of the base plate 1, so as to avoid the occurrence of conductive phenomenon, improve the lightning protection effect of the transformer body 24, and attract lightning through the lightning rod 6, and form a space with a local electric field concentration at the top of the lightning rod 6 to affect the development direction of the lightning leader discharge, guide the lightning to discharge to the lightning rod 6, and then introduce the lightning current into the earth through the detonator 8 and the bellows 9, so as to protect the transformer body 24, solve the problem that the existing power and electrical transformer has poor lightning protection effect when in use, and thunderstorm weather easily attracts lightning, resulting in damage to the transformer, and then causes power outages for residents, which is inconvenient for people to use (the above is the working process of the whole device, and the content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field).

[0032] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lightning protection assembly for a power transformer, comprising a base plate (1), a grounding grid (10), a fixing plate (11) and a plug (20), characterized in that: The right side of the top of the base plate (1) is fixedly connected to a transformer body (24); an insulating cover (2) is placed on the top of the base plate (1) and outside the transformer body (24); a lightning rod (6) is fixedly connected to the top of the insulating cover (2); a detonator (8) is connected to the right side of the lightning rod (6); a bellows (9) is connected to the bottom of the bellows (9); the bottom of the bellows (9) is connected to the top of a leakage ground grid (10); and a fixing box (3) is fixedly connected to the left side of the top of the base plate (1).

2. A lightning protection assembly for a power transformer according to claim 1, characterized in that: The top of the fixed box (3) is fixedly connected to a servo motor (4), the output end of the servo motor (4) is fixedly connected to a screw rod (13), the surface of the screw rod (13) is threadedly connected to a screw sleeve (14), the front and back sides of the screw sleeve (14) are fixedly connected to a connecting plate (15), the right side of the connecting plate (15) is fixedly connected to a connecting rod (16), and the right side of the connecting rod (16) is fixedly connected to the left side of the insulating cover (2).

3. A lightning protection assembly for a power transformer according to claim 2, characterized in that: The front side and the back side of the inner wall of the fixed box (3) are both provided with a slide groove (17), the outer side of the connecting plate (15) is fixedly connected with a slider (18), and the outer side of the slider (18) is slidably connected to the inner cavity of the slide groove (17).

4. A lightning protection assembly for a power transformer according to claim 2, characterized in that: A through slot (5) is provided on the front side and the back side of the right side of the fixed box (3), and the right side of the connecting rod (16) passes through the inner cavity of the through slot (5) and extends to the right side of the fixed box (3).

5. The lightning protection assembly for a power transformer according to claim 1, characterized in that: The top and bottom of the inner wall of the insulating cover (2) are fixedly connected to mounting seats (23) all around, the inner side of the fixing plate (11) is fixedly connected to mounting blocks (19) all around, the mounting blocks (19) are snap-fitted into the inner cavity of the mounting seats (23), and the inner surface of the fixing plate (11) is inlaid with a dustproof net (12).

6. A lightning protection assembly for a power transformer according to claim 5, characterized in that: The inner surface of the mounting block (19) is provided with a slot (22), the bottom of the inner surface of the mounting seat (23) is provided with a clamping slot (21), the bottom of the insertion rod (20) passes through the inner cavity of the slot (22) and is clamped in the inner cavity of the clamping slot (21), and the top of the insertion rod (20) is fixedly connected with a pull plate (7).

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