A current transformer with a protection device

Abstract

This utility model discloses a current transformer with a protection device, belonging to the field of power equipment technology. It includes a current transformer body, with two ventilation windows on both the front and rear sides of the outer surface of the current transformer body. Each ventilation window is equipped with a cleaning structure. Each ventilation window is connected to a first inner window and a second inner window located inside the current transformer body via an air duct. Several shock-absorbing structures are installed at the bottom of the current transformer body, all mounted on a base plate. Side plates are also provided on the side surfaces of the current transformer body. This utility model, through the synergistic effect of the ventilation windows, cleaning structures, fan, dust suppression net, shock-absorbing structures, and moisture-proof pads, achieves heat dissipation, dust prevention, shock absorption, and moisture protection for the current transformer, effectively improving the reliability and environmental adaptability of the equipment and extending its service life.

Description

Technical Field

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

[0002] Currently, traditional instrument transformers face the following problems during operation: poor ventilation and heat dissipation, leading to performance degradation due to overheating of internal components; external dust easily entering the equipment through ventilation openings, affecting the stability of electrical components; vibrations generated during operation may cause internal structural loosening, shortening service life; in addition, humid environments may cause moisture damage to components. Therefore, there is an urgent need to design an instrument transformer protection device that integrates multiple protection functions. Utility Model Content

[0003] The purpose of this invention is to provide a current transformer with a protection device, which solves the shortcomings of traditional current transformers in terms of ventilation, heat dissipation, dust prevention, shock absorption and moisture prevention, and improves the stability and service life of the equipment.

[0004] To achieve the above objectives, this utility model provides a current transformer with a protection device, including a current transformer body. Two ventilation windows are provided on both the front and rear sides of the outer surface of the current transformer body. Each ventilation window is equipped with a cleaning structure. Each ventilation window is connected to a first inner window and a second inner window located inside the current transformer body through an air duct. Several shock-absorbing structures are installed at the bottom of the current transformer body, and the shock-absorbing structures are all installed on a base plate. Side plates are also provided on the side surface of the current transformer body.

[0005] Preferably, the ventilation window is provided with a top slide rail and a bottom slide rail at the top and bottom, and the bottom slide rail is an L-shaped structure. An external dust suppression net is also provided at the connection between the ventilation window and the air duct opening.

[0006] Preferably, the cleaning structure includes a brush mounted on a fixed plate. A top slider and an L-shaped slider are respectively mounted at the upper and lower ends of the fixed plate. The fixed plate also has a sliding handle connected to the upper end of the top slider. The top slider and the L-shaped slider are located within top and bottom tracks respectively on the ventilation window. By controlling the sliding handle, the fixed plate slides within the tracks, thereby displacing the brush to clean the external dust-collecting screen. This cleaning is to prevent accumulated dust from clogging the dust-collecting screen and reducing ventilation efficiency.

[0007] Preferably, a fan is installed inside the first inner window, and internal dust-reducing screens are installed on both outer sides of the first inner window and on the second inner window. The fan can improve airflow inside the transformer body, thereby improving the overall ventilation effect. The improved ventilation effect can also indirectly improve the heat dissipation effect.

[0008] Preferably, the bottom of the transformer body is provided with several moisture-proof pads.

[0009] Preferably, the shock-absorbing structure includes several piston rods, each piston rod having a spring sleeved on its exterior. The upper and lower ends of each piston rod are connected to a top cover and a support column, respectively. The top cover is sleeved on the outside of the support column, and the support column is mounted on a base. The piston rods and springs work together to achieve shock absorption. Furthermore, this invention employs a design with multiple shock-absorbing structures, allowing the selection of the number of structures to be installed according to actual needs, thereby achieving the most suitable shock absorption effect.

[0010] Preferably, the support column has a "T" shaped structure, and the bottom end of the top cover is connected to the "T" shaped part of the top of the support column to limit the position and prevent the top cover from falling off.

[0011] Preferably, the base and the base plate are fixedly connected by bolts. The base can also be fixedly connected to the base plate by other means, including welding.

[0012] Therefore, the current transformer with a protection device using the above-described structure has the following beneficial effects:

[0013] (1) This utility model forms an air convection channel through the combination of ventilation windows, fans and inner and outer dust-reducing nets, which significantly improves heat dissipation efficiency and avoids equipment failure due to overheating. In addition, the outer and inner dust-reducing nets form a double dust barrier. Combined with the cleanable brush structure, it effectively prevents dust from entering and reduces the frequency of component maintenance. The bottom moisture-proof pad can absorb moisture and ensure the stability of the equipment under complex working conditions.

[0014] (2) The limiting design of the spring-piston rod damping unit and the "T"-shaped support column in this utility model can significantly reduce the vibration amplitude of the equipment, reduce the risk of loosening of the internal structure, and extend the service life. The number of damping structures can be increased or decreased according to needs, and the base fixing method is diversified, which improves the environmental adaptability and installation convenience of the equipment.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a current transformer with a protection device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of a current transformer with a protection device according to the present invention;

[0018] Figure 3This is a perspective view of the shock absorption structure of a current transformer with a protection device according to this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the shock-absorbing structure of a current transformer with a protection device according to this utility model;

[0020] Figure 5 This is a schematic diagram of the air duct opening of a current transformer with a protection device according to this utility model;

[0021] Figure 6 This is a schematic diagram of the ventilation window structure of a current transformer with a protection device according to the present invention;

[0022] Figure Labels

[0023] 1. Current transformer body; 2. Ventilation window; 3. Cleaning structure; 4. Moisture-proof pad; 5. Air duct opening; 6. First inner window; 7. Second inner window; 8. Shock-absorbing structure; 9. Base plate; 10. Side plate; 21. Top slide rail; 22. Bottom slide rail; 23. External dust suppression net; 31. Brush; 32. Fixing plate; 33. Sliding handle; 34. L-shaped slider; 35. Top slider; 61. Fan; 62. Internal dust suppression net; 81. Piston rod; 82. Spring; 83. Top cover; 84. Support column; 85. Base. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0025] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] Example

[0027] As shown in the figure, this utility model provides a current transformer with a protection device, including a current transformer body 1. Two ventilation windows 2 are provided on both the front and rear sides of the outer surface of the current transformer body 1. Each ventilation window 2 is equipped with a cleaning structure 3. Each ventilation window 2 is connected to a first inner window 6 and a second inner window 7 located inside the current transformer body 1 via an air duct 5. Several shock-absorbing structures 8 are installed at the bottom of the current transformer body 1, all mounted on a base plate 9. Side plates 10 are also provided on the side surfaces of the current transformer body 1. The side plates 10 are fixed to the current transformer body 1 with bolts. The side plates can be removed by unscrewing the bolts to allow for maintenance of the interior of the current transformer body 1.

[0028] The ventilation window 2 has a top slide rail 21 and a bottom slide rail 22 at its top and bottom, respectively. The bottom slide rail 22 has an L-shaped structure. An external dust suppression net 23 is also installed at the connection between the ventilation window 2 and the air duct 5. The top slide rail 21 and the bottom slide rail 22 facilitate the installation and sliding of the cleaning structure 3. The external dust suppression net 23 can initially filter dust in the air and reduce dust entering the equipment.

[0029] The cleaning structure 3 includes a brush 31, which is mounted on a fixed plate 32. A top slider 35 and an L-shaped slider 34 are respectively mounted on the upper and lower ends of the fixed plate 32. A sliding handle 33 is also provided on the fixed plate 32, and the sliding handle 33 is connected to the upper end of the top slider 35. The top slider 35 and the L-shaped slider 34 are respectively embedded in the top slide rail 21 and the bottom slide rail 22 of the ventilation window 2. By pushing the sliding handle 33, the brush 31 slides along the slide rail, periodically removing accumulated dust from the external dust collection screen 23, preventing the dust collection screen from clogging and affecting the ventilation effect.

[0030] A fan is installed inside the first inner window 6, and internal dust-reducing nets 62 are installed on both outer sides of the first inner window 6 and on the second inner window 7. The fan 61 can improve the airflow inside the transformer body 1, thereby improving the overall ventilation effect. The improved ventilation effect can also indirectly improve the heat dissipation effect. The fan 61 improves the airflow inside the transformer body 1 through forced convection, enhancing the heat dissipation effect; the internal dust-reducing nets 62 further filter fine particles in the air, ensuring that the air entering the equipment is clean and protecting the electrical components.

[0031] Several moisture-proof pads 4 are installed at the bottom of the inside of the current transformer body 1. The moisture-proof pads 4 are made of hygroscopic material, which can effectively absorb most of the moisture inside the equipment, prevent the components from getting damp and rusting or short-circuiting in a high humidity environment, and reduce the moisture content, thus extending the service life of the components.

[0032] The vibration damping structure 8 includes several piston rods 81, each with a spring 82 sleeved on its exterior. The upper and lower ends of each piston rod 81 are connected to a top cover 83 and a support column 84, respectively. The top cover 83 is sleeved on the outside of the support column 84, which is mounted on a base 85. The piston rods 81 and springs 82 form an elastic vibration damping unit. When the equipment is subjected to vibration, the springs 82 absorb vibration energy through compression and extension, reducing the amplitude of vibration transmitted to the transformer body 1. The combination design of multiple vibration damping structures can be adjusted according to actual installation requirements to adapt to different vibration environments. The top of the "T"-shaped support column 84 engages with the groove at the bottom of the top cover 83 to form a limiting structure, preventing the top cover 83 from shifting laterally or falling off during vibration, ensuring the stability of the vibration damping structure.

[0033] The base 85 is fixedly connected to the base plate 9 by bolts. The base 85 can also be fixedly connected to the base plate 9 by other methods. The flexible fixing methods facilitate equipment installation and maintenance. Bolt connection is suitable for scenarios that require disassembly, while welding is suitable for fixed installation requirements.

[0034] Ventilation and dust control procedures:

[0035] Outside air is filtered through the external dust-reducing net of the ventilation window and enters the inside of the transformer body through the air duct, passing through the first inner window and the second inner window in sequence.

[0036] The fan inside the first inner window starts, accelerating airflow and carrying internal heat out through the second inner window, forming a heat dissipation cycle.

[0037] When the external dust suppression net accumulates a lot of dust, push the sliding handle of the cleaning structure to move the brush along the top and bottom tracks to remove the dust from the dust suppression net.

[0038] Shock absorption and moisture-proof functions are achieved:

[0039] The transformer body is connected to the piston rod of the shock-absorbing structure through the top cover. The vibration generated by the operation of the equipment is transmitted to the spring through the piston rod. The spring is compressed and deformed to absorb the vibration energy. The "T"-shaped structure of the support column restricts the lateral movement of the top cover to ensure the shock absorption effect.

[0040] A moisture-proof pad is laid at the bottom of the transformer body to continuously absorb internal moisture and maintain a dry environment.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A current transformer with a protection device, characterized in that, The device includes a current transformer body. Two ventilation windows are provided on the front and rear sides of the outer surface of the current transformer body. Each ventilation window is equipped with a cleaning structure. Each ventilation window is connected to a first inner window and a second inner window located inside the current transformer body through an air duct. Several shock-absorbing structures are installed at the bottom of the current transformer body. Several shock-absorbing structures are installed on a base plate. Side plates are also provided on the side surface of the current transformer body.

2. A current transformer with a protection device according to claim 1, characterized in that: The ventilation window is provided with a top slide rail and a bottom slide rail at the top and bottom, and the bottom slide rail is L-shaped. An external dust suppression net is also provided at the connection between the ventilation window and the air duct opening.

3. A current transformer with a protection device according to claim 1, characterized in that: The cleaning structure includes a brush mounted on a fixed plate. A top slider and an L-shaped slider are respectively mounted on the upper and lower ends of the fixed plate. A sliding handle is also provided on the fixed plate, and the sliding handle is connected to the upper end of the top slider.

4. A current transformer with a protection device according to claim 1, characterized in that: The first inner window is equipped with a fan, and internal dust-reducing nets are installed on both sides of the first inner window and on the second inner window.

5. A current transformer with a protection device according to claim 1, characterized in that: The bottom of the transformer body is provided with several moisture-proof pads.

6. A current transformer with a protection device according to claim 1, characterized in that: The shock-absorbing structure includes a piston rod, a spring is sleeved on the outside of the piston rod, the upper and lower ends of the piston rod are respectively connected to a top cover and a support column, the top cover is sleeved on the outside of the support column, and the support column is mounted on a base.

7. A current transformer with a protection device according to claim 6, characterized in that: The support column has a "T" shaped structure.

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