Electromagnetic interference resistant transformer shield housing

Abstract

The utility model relates to transformer shielding shell technical field, and disclose based on transformer shielding shell of anti - electromagnetic interference, including shielding shell and movable door mechanism, movable door mechanism is by fixed frame, fixed strip, bolt etc.

Description

Technical Field

[0001] This utility model relates to the field of transformer shielding shell technology, specifically to a transformer shielding shell based on electromagnetic interference resistance. Background Technology

[0002] Electromagnetic interference (EMI) shielding enclosures for transformers are specialized protective devices designed to enclose transformers. Through unique structural and material designs, they block and absorb external electromagnetic signals while preventing electromagnetic radiation generated by the transformer itself from interfering with external equipment. In power systems, transformers, as core energy conversion devices, directly impact the stability and security of power transmission. With the rapid development of industrial automation and electronic information technology, the surrounding environment is filled with numerous electromagnetic signals. This EMI can cause malfunctions in the transformer's internal circuitry, decreased metering accuracy, and even equipment damage. Simultaneously, the electromagnetic radiation generated by the transformer itself during operation can adversely affect surrounding precision electronic equipment. Therefore, such shielding enclosures are needed to create a relatively clean electromagnetic environment for the transformer, ensuring its efficient and stable operation.

[0003] Traditional transformer protection devices have significant shortcomings in resisting electromagnetic interference. Some traditional devices use only a single metal shell as the protective structure. Due to the lack of a dedicated shielding design, electromagnetic signals can easily penetrate through gaps and interfaces in the shell, resulting in poor shielding effectiveness. In addition, some traditional devices have relatively simple structural designs. In pursuit of protective performance, the convenience of equipment maintenance is often overlooked. For example, the closed structure is fixed and rigid. When the transformer needs to be inspected or maintained, the opening and closing process is time-consuming and laborious, which not only affects work efficiency but may also lead to a decrease in the sealing of the protective structure due to frequent operation, further weakening the electromagnetic interference resistance. This cannot meet the dual requirements of modern power systems for equipment protection and operation and maintenance efficiency. Therefore, we propose a transformer shielding shell based on electromagnetic interference resistance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a transformer shielding shell based on electromagnetic interference resistance, thus solving the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a transformer shielding shell based on electromagnetic interference resistance, comprising a shielding shell, characterized in that it further comprises a movable door mechanism; The movable door mechanism includes a fixed frame, a fixed strip, bolts, a slide rail, a T-shaped slide bar, a movable closing door, and a T-shaped slide groove; A fixing frame is fixedly connected to one end of the top of the shielding shell, and fixing strips are movably connected to both sides of the inner wall of the fixing frame; The outer wall of one side of the fixing strip is threaded with four equally spaced bolts; A slide rail is fixedly connected to one end of the bottom of the shielding shell, and the slide rail is parallel to the top and bottom of the fixing frame; The bottom of the inner wall of the slide rail is provided with a T-shaped slide bar, and the top of the slide rail is provided with a movable closed door, the bottom of which is provided with a T-shaped slide groove; The T-shaped groove and the T-shaped slide bar are in sliding fit.

[0006] Preferably, parallel fixing grooves are provided on the outer walls of both sides of the movable closed door.

[0007] Preferably, four threaded holes are provided on one side of the inner wall of the fixing groove, which are vertically and equidistantly distributed.

[0008] Preferably, the outer wall of one side of the fixing strip is fitted into the inner wall of the fixing groove.

[0009] Preferably, the bolt output end is threadedly connected to the inner wall of the threaded hole.

[0010] Preferably, the top of the shielding shell has multiple sets of equidistantly distributed output ports; The shielding shell has shielding plates fixedly connected to both sides of its inner wall.

[0011] Preferably, mounting plates are fixedly connected to the outer walls of the shielding shell on both sides near the bottom; The mounting plate has two equally spaced mounting holes on its top.

[0012] Compared with the prior art, this utility model provides a transformer shielding shell based on electromagnetic interference resistance, which has the following beneficial effects: 1. This transformer shielding shell, based on electromagnetic interference resistance, differs from traditional devices that often use a single metal shell, which is prone to poor shielding due to electromagnetic leakage at gaps and interfaces. This device achieves three-dimensional protection through a multi-layered structural design. The shielding shell serves as the outer basic shield, while the shielding plates on both sides of the inner wall form the inner barrier. The dual structure works together to absorb and reflect electromagnetic signals, significantly reducing the intrusion of external interference. At the same time, the movable sealing door and the shielding shell are tightly closed by fitting the fixing strip and fixing groove and locking the bolts and threaded holes, reducing electromagnetic leakage caused by poor sealing in traditional devices. In addition, although the top output port is a cable outlet channel, the overall shielding structure design minimizes electromagnetic radiation leakage at the opening. Compared with the simple protection of a single shell in traditional devices, the electromagnetic interference resistance is significantly improved.

[0013] 2. Compared to traditional devices with rigid and fixed enclosed structures that are time-consuming and laborious to open and close, and whose frequent operation can easily lead to a decrease in sealing performance, this device's movable door mechanism uses a sliding cooperation of slide rails and T-shaped slide bars. This allows the movable door to move easily horizontally along the slide rails, making the opening and closing process smooth and effortless, significantly shortening the operation time during maintenance. At the same time, the interlocking design of the fixing strip and fixing groove, combined with the threaded connection of bolts and threaded holes, can quickly lock the movable door in place with bolts to ensure sealing, and can also be easily opened by removing the bolts. This solves the problem of cumbersome disassembly of the fixed structure of traditional devices. This flexible opening and closing and fixing method greatly improves the efficiency of transformer installation, inspection and other maintenance work while ensuring the shielding effect.

[0014] 3. Compared to traditional devices that may shift due to unstable installation and vibration during equipment operation, leading to a loosening of the shielding structure and weakened electromagnetic interference resistance, this device features mounting holes on both sides of the bottom mounting plate. The shielding shell can be securely fixed to the mounting base with bolts, effectively resisting vibration and impact during operation and preventing shell displacement. Simultaneously, the sliding rails and fixing frames in the movable door mechanism are arranged parallel vertically. The sliding cooperation between the T-shaped sliding strip and the T-shaped sliding groove limits the offset of the movable closed door. The engagement of the fixing strip and the fixing groove, along with the tightening of the bolts, further ensures a stable connection between the movable closed door and the shielding shell. Compared to the simple installation method of traditional devices, the overall structural design of this device emphasizes stability from installation and fixing to component connection, maintaining excellent shielding performance over a long period and meeting the requirements of long-term stable operation of the power system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the fixing strip of this utility model; Figure 3 This is a schematic diagram of the slide rail of this utility model; Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0016] In the diagram: 1. Shielding shell; 2. Fixing bracket; 3. Fixing strip; 4. Bolt; 5. Slide rail; 6. T-shaped slide bar; 7. Movable enclosing door; 8. T-shaped slide groove; 9. Fixing groove; 10. Threaded hole; 11. Output port; 12. Shielding plate; 13. Mounting plate; 14. Mounting hole. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 A transformer shielding shell based on electromagnetic interference resistance, comprising a shielding shell 1, characterized in that it further comprises a movable door mechanism; The movable door mechanism includes a fixed frame 2, a fixed strip 3, bolts 4, a slide rail 5, a T-shaped slide bar 6, a movable closing door 7, and a T-shaped slide groove 8; A fixed frame 2 is fixedly connected to one end of the top of the shielding shell 1. The fixed frame 2 provides a base for the installation and support of the fixing strip, so that the fixing strip can stably play the role of fixing the movable closed door and ensure the overall stability of the movable door mechanism. Fixing strips 3 are movably connected to both sides of the inner wall of the fixed frame 2. The fixing strips can move in the fixed frame to facilitate cooperation with the fixing groove on the movable closed door. By adjusting the position, precise fitting with the fixing groove can be achieved, thereby fixing the movable closed door. Four equally spaced bolts 4 are threaded on one side of the outer wall of the fixing strip 3. The bolts are used to tightly connect the fixing strip to the movable closing door. The tightness of the threaded connection prevents the movable closing door from loosening during use and ensures the sealing of the outer shell. A slide rail 5 is fixedly connected to one end of the bottom of the shielding shell 1. The slide rail 5 is parallel to the top and bottom of the fixed frame 2. The slide rail provides a track for the sliding of the movable closed door. Its parallel setting with the fixed frame ensures that the movable closed door remains stable during the sliding process and will not deviate, thus ensuring the normal operation of the movable door mechanism. The bottom of the inner wall of the slide rail 5 is provided with a T-shaped slide bar 6, and the top of the slide rail 5 is provided with a movable closed door 7. The bottom of the movable closed door 7 is provided with a T-shaped slide groove 8. The cooperation design of the T-shaped slide bar and the T-shaped slide groove restricts the sliding direction of the movable closed door, so that it can only move horizontally along the slide rail, while preventing the movable closed door from falling off the slide rail, ensuring the stability and safety of the sliding of the movable closed door. The T-shaped slide rail 8 and the T-shaped slide bar 6 are in sliding fit. This sliding fit allows the movable closed door to move easily along the slide rail, realizing the opening and closing of the outer shell. It is easy to operate, and at the same time, it can ensure the accurate docking of the movable closed door and the shielding shell when closed, thus enhancing the sealing effect.

[0019] The two outer walls of the movable closed door 7 are respectively provided with parallel fixing grooves 9. The fixing grooves provide a fitting space for the fixing strip. By fitting the fixing strip with the fixing groove, the displacement of the movable closed door is restricted from the side, further enhancing the stability of the connection between the movable closed door and the shielding shell.

[0020] Four threaded holes 10 are provided on one side of the inner wall of the fixing groove 9, which are vertically and equidistantly distributed. The threaded holes cooperate with bolts, and the fixing strip is rigidly connected to the movable closing door by screwing in the bolts. The setting of multiple threaded holes can be adjusted and fixed according to different positions of the movable closing door, which improves the flexibility and applicability of fixing.

[0021] The outer wall of one side of the fixing strip 3 is fitted into the inner wall of the fixing groove 9. This fitting method allows the fixing strip to fit tightly into the fixing groove, fixing the movable closing door from the side, preventing the movable closing door from moving in the horizontal direction, and ensuring the sealing of the outer shell.

[0022] The output end of bolt 4 is threaded to the inner wall of threaded hole 10. The threaded connection has good fastening properties. Through the cooperation of bolt and threaded hole, the fixing strip and movable sealing door are firmly fixed together, ensuring that the movable sealing door will not loosen when closed, and effectively blocking electromagnetic interference.

[0023] The top of the shielding shell 1 has multiple sets of equally spaced output ports 11. The output ports are used to lead out the transformer cables. The equally spaced design makes the cable layout neat. At the same time, the overall structure of the shielding shell can reduce electromagnetic leakage at the output ports and ensure that the anti-electromagnetic interference effect is not affected too much. Shielding plates 12 are fixedly connected to both sides of the inner wall of the shielding shell 1. As an inner shielding structure, the shielding plates work together with the shielding shell to further absorb and reflect electromagnetic signals, enhance the electromagnetic shielding effect on the internal transformer, and effectively isolate external electromagnetic interference.

[0024] Mounting plates 13 are fixedly connected to the outer walls of the shielding shell 1 near the bottom on both sides. The mounting plates provide support points for the installation of the shielding shell, making it easy to fix the shielding shell in the designated position, ensuring the stability of the shielding shell during use, and avoiding the impact of the shielding shell shaking on the electromagnetic interference resistance performance. The top of the mounting plate 13 has two equally spaced mounting holes 14. The mounting holes are used to fix the mounting plate to the mounting base by means of bolts or other connecting parts. The two equally spaced mounting holes make the fixation more stable, prevent the shielding shell from shifting during operation, and ensure that it continues to play its role in resisting electromagnetic interference.

[0025] Working principle: First, the slide rail 5 at the bottom of the shielding shell 1 and the T-shaped slide groove 8 at the bottom of the movable closed door 7 are slidably connected by the T-shaped slide bar 6. When the shell needs to be opened, the movable closed door 7 is pushed, and the T-shaped slide bar 6 slides along the inner wall of the slide rail 5, causing the movable closed door 7 to move horizontally, thus opening one end of the shell; when closing, it is pushed in the opposite direction to reset the movable closed door 7, initially closing the shell opening. The fixing grooves 9 on both sides of the movable closed door 7 are adapted to the fixing bars 3 on the inner wall of the fixing frame 2. When the movable closed door 7 slides to the closed position, the fixing bars 3 are embedded in the fixing grooves 9, which restricts the displacement of the movable closed door 7 laterally, ensuring its fit with the shielding shell 1. The bolts 4 (four in total, evenly distributed) on the fixing bars 3 are threadedly connected to the threaded holes 10 (vertically evenly distributed) in the fixing grooves 9. Tighten bolt 4, screwing its output end into threaded hole 10, to rigidly fix the fixing strip 3 to the movable closed door 7, further strengthening the sealing effect and preventing electromagnetic leakage caused by loose movable door. The shielding shell 1, as the outer protective structure, has basic electromagnetic shielding capability. The shielding plates 12 fixed on both sides of its inner wall are the inner shielding, which absorb and reflect electromagnetic signals through the characteristics of the material (usually conductive or magnetic material). The dual structure greatly reduces the interference of external electromagnetic radiation on the internal transformer. The multiple output ports 11 on the top of the shielding shell 1 are used for the lead-out of transformer cables. Their equidistant distribution structure, together with the overall shielding performance of the shell, ensures normal cable connection while reducing electromagnetic leakage caused by openings and preventing external interference from entering through the output ports. Through the synergy of the shell body and the inner shielding plate, a three-dimensional electromagnetic protection barrier is formed, effectively isolating external electromagnetic interference and ensuring the stable operation of the transformer. The mounting plates 13 on both sides of the bottom of the shielding shell 1 are connected to the external fixed structure (such as the ground or bracket) through the mounting holes 14 on the top. Bolts pass through mounting holes 14 to fix the outer casing, preventing vibration during equipment operation from causing displacement of the outer casing or loosening of components, ensuring the stability of the shielding structure, and maintaining long-term anti-electromagnetic interference effect. When the movable closed door 7 is fully closed and fixed by bolts 4, the shielding outer casing 1, the movable closed door 7, and the shielding plate 12 together form a closed cavity, in which the transformer is placed, isolated from the external electromagnetic environment, minimizing the impact of electromagnetic interference on its performance.

[0026] 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 transformer shielding enclosure based on electromagnetic interference resistance, comprising a shielding enclosure (1), characterized in that, It also includes movable door mechanisms; The movable door mechanism includes a fixed frame (2), a fixed strip (3), a bolt (4), a slide rail (5), a T-shaped slide bar (6), a movable closed door (7), and a T-shaped slide groove (8); The top end of the shielding shell (1) is fixedly connected to a fixing frame (2), and the two sides of the inner wall of the fixing frame (2) are respectively movably connected to fixing strips (3); The outer wall of one side of the fixing strip (3) is threaded with four equally spaced bolts (4); The bottom end of the shielding shell (1) is fixedly connected to a slide rail (5), and the slide rail (5) is parallel to the top and bottom of the fixing frame (2); The slide rail (5) has a T-shaped slide bar (6) at the bottom of its inner wall, and a movable closed door (7) is provided above the slide rail (5). The movable closed door (7) has a T-shaped slide groove (8) at its bottom. The T-shaped groove (8) and the T-shaped slide bar (6) are in sliding fit.

2. The transformer shielding enclosure based on electromagnetic interference resistance according to claim 1, characterized in that: The movable closed door (7) has parallel fixing grooves (9) on both outer walls.

3. The transformer shielding enclosure based on electromagnetic interference suppression according to claim 2, characterized in that: The inner wall of the fixing groove (9) has four threaded holes (10) that are vertically and equidistantly distributed.

4. The transformer shielding enclosure based on electromagnetic interference suppression according to claim 1, characterized in that: The outer wall of one side of the fixing strip (3) is fitted into the inner wall of the fixing groove (9).

5. The transformer shielding enclosure based on electromagnetic interference resistance according to claim 1, characterized in that: The output end of the bolt (4) is threadedly connected to the inner wall of the threaded hole (10).

6. The transformer shielding enclosure based on electromagnetic interference suppression according to claim 1, characterized in that: The shielding shell (1) has multiple sets of equally spaced output ports (11) on its top. The shielding shell (1) has shielding plates (12) fixedly connected to both sides of its inner wall.

7. The transformer shielding enclosure based on electromagnetic interference suppression according to claim 1, characterized in that: The shielding shell (1) has mounting plates (13) fixedly connected to the outer walls on both sides near the bottom. The mounting plate (13) has two equally spaced mounting holes (14) on its top.

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