A shielding device for a high voltage transformer

Abstract

The utility model discloses a shielding device for high -tension mutual -inductor, specifically relates to high -tension mutual -inductor shielding technical field, including installation base, the upper end of installation base is installed with shielding cover body, the upper end of shielding cover body is installed with shielding cover, the upper end of shielding cover is installed with protection top, the upper end of shielding cover is installed with lacquer box, the outside of shielding cover body is provided with hollow paint frame, the inside of hollow paint frame is installed with sponge brush, the outside of lacquer box is installed with a plurality of paint hose, and the one end of paint hose is connected with hollow paint frame away from lacquer box, and the upper portion of shielding cover body is provided with elevating system. The utility model discloses through the lacquer box, paint hose, hollow paint frame and the built -in sponge brush's synergies, combine elevating system, can automatically, evenly to the low -resistance lacquer's coating and repair of shielding cover body outer surface, effectively solved the key problem of the reduction of shielding effect because of the knock of outside and the peeling of paint layer, improved the durability and reliability of device.

Description

Technical Field

[0001] This utility model relates to the field of high voltage transformer shielding technology, and more specifically, to a shielding device for high voltage transformers. Background Technology

[0002] Instrument transformers, also known as instrument transformers, can transform high voltage into low voltage and large current into small current. They are used in measurement or protection systems. Their main function is to proportionally transform high voltage or large current into standard low voltage or standard small current to achieve standardization and miniaturization of measuring instruments, protection equipment, and automatic control equipment. At the same time, instrument transformers can also be used to isolate high voltage systems to ensure the safety of personnel and equipment. High voltage instrument transformers need to be shielded from the electric field when they are working, which requires shielding covers and low-resistivity paint applied to their surfaces to achieve the shielding effect.

[0003] Common shielding devices used for high-voltage transformers can only achieve the shielding effect through the shielding cover and the low-resistivity paint applied to its surface. However, they lack the function of touch-up painting. In daily use, the shielding cover may be touched by external objects for various reasons, which will cause the low-resistivity paint on part of the shielding cover to fall off, ultimately resulting in a decrease in the shielding effect.

[0004] In summary, to achieve the desired shielding effect, it is necessary to address the issue of low-resistivity varnish peeling off, ensuring that any peeling of the low-resistivity varnish on the surface of the shielding cover can be repaired promptly. Summary of the Invention

[0005] The present invention provides a shielding device for high voltage transformers, which aims to solve the problem that the shielding cover may be touched by external objects for various reasons, which will cause the low-resistivity paint on part of the shielding cover surface to peel off.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shielding device for a high-voltage transformer, comprising a mounting base, a shielding cover mounted on the upper end of the mounting base, a shielding cap mounted on the upper end of the shielding cover, a protective top mounted on the upper end of the shielding cap, a paint box mounted on the upper end of the shielding cap, a hollow paint brush frame provided on the outer side of the shielding cover, a sponge brush mounted on the inner side of the hollow paint brush frame, multiple paint delivery hoses mounted on the outer side of the paint box, the end of the paint delivery hoses away from the paint box being connected to the hollow paint brush frame, a lifting mechanism provided on the shielding cover, and a balancing mechanism provided on the shielding cover.

[0007] In a preferred embodiment, the output end of the lifting mechanism is connected to the hollow paint brush frame. The lifting mechanism is used to control the lifting and lowering movement of the sponge brush. The lifting mechanism includes a drive component and a linkage component. The output end of the drive component is connected to the linkage component, and the drive component is used to control the lifting and lowering movement of the linkage component. The output end of the linkage component is connected to the hollow paint brush frame, and the linkage component is used to control the lifting and lowering movement of the hollow paint brush frame.

[0008] In a preferred embodiment, the drive assembly includes a first fixing plate mounted on the outside of the shielding cover, a motor mounted on the lower end of the first fixing plate, and a lead screw mounted on the output end of the motor, wherein the motor is used to control the rotational movement of the lead screw.

[0009] In a preferred embodiment, the linkage assembly includes a drive plate mounted on the outside of the hollow paint frame and a folded gooseneck tube mounted on the lower end of the drive plate, with the drive plate threadedly connected to a lead screw.

[0010] In a preferred embodiment, a balancing mechanism is used to maintain the stability of the hollow paint brush frame during lifting and lowering. The balancing mechanism includes a limiting component and a sliding component. The limiting component is used to limit the range of movement of the sliding component, and the sliding component is used to move up and down along the limiting component.

[0011] In a preferred embodiment, the limiting component includes a second fixing plate mounted on the outside of the shield and a sliding rod mounted on the upper end of the second fixing plate.

[0012] In a preferred embodiment, the sliding assembly includes a driven plate mounted on the outside of the hollow paint frame, the driven plate being slidably connected to the slide rod.

[0013] In a preferred embodiment, the upper end of the mounting base is provided with a mounting groove, the lower end of the mounting base is provided with a heat dissipation groove, a plurality of heat dissipation fins are installed inside the heat dissipation groove, four heat dissipation plates are installed in a rectangular shape inside the shielding cover, a plurality of reinforcing ribs are installed on the outer side of the shielding cover, and the inner side of the sponge brush is in contact with the shielding cover and the reinforcing ribs.

[0014] The beneficial effects of this utility model are as follows: This invention uses a paint box as a storage source for low-resistivity paint. Multiple paint delivery hoses stably deliver the paint to a hollow paint-brushing frame surrounding the shielding cover, saturating the sponge brush inside. A cleverly integrated lifting mechanism drives the entire hollow paint-brushing frame and its sponge brush to move smoothly up and down along the outer surface of the shielding cover. This achieves automated and uniform low-resistivity paint coating and intelligent repair on the outer surface of the shielding cover, including its reinforcing rib areas. It effectively solves the core technical problem of localized paint peeling due to external impacts, which weakens the electromagnetic shielding effect. This significantly improves the shielding device's self-repair capability against accidental damage, the long-term stability of its overall shielding performance, and the durability and reliability of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0017] Figure 3 This is a schematic cross-sectional view of the mounting base of this utility model.

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the shielding cover of this utility model.

[0019] Figure 5 This is an exploded structural diagram of the drive component of this utility model.

[0020] Figure 6 This is a schematic diagram of the paint touch-up component of this utility model.

[0021] The attached diagram is labeled as follows: 1. Mounting base; 11. Shielding cover; 12. Shielding cap; 13. Protective top; 14. Paint box; 15. Hollow paint brush frame; 16. Sponge brush; 17. Paint delivery hose; 211. First fixing plate; 212. Motor; 213. Lead screw; 221. Drive plate; 222. Folding gooseneck tube; 311. Second fixing plate; 312. Sliding rod; 321. Driven plate; 411. Mounting slot; 412. Heat dissipation slot; 413. Heat dissipation fins; 414. Heat dissipation plate; 415. Reinforcing rib. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] Refer to the instruction manual appendix Figures 1 to 6 A shielding device for a high-voltage transformer includes a mounting base 1, a shielding cover 11 mounted on the upper end of the mounting base 1, a shielding cover 12 mounted on the upper end of the shielding cover 11, a protective top 13 mounted on the upper end of the shielding cover 12, a paint box 14 mounted on the upper end of the shielding cover 12, a hollow paint brush frame 15 provided on the outer side of the shielding cover 11, a sponge brush 16 mounted on the inner side of the hollow paint brush frame 15, and a plurality of paint delivery hoses 17 mounted on the outer side of the paint box 14. The end of the paint delivery hoses 17 away from the paint box 14 is connected to the hollow paint brush frame 15. A lifting mechanism and a balancing mechanism are provided on the shielding cover 11.

[0024] It should be noted that the shielding cover 11, the shielding cover 12, and the protective top 13 together form a complete electromagnetic shielding cavity. The paint box 14 is used to store low-resistance shielding paint and delivers it to the hollow paint brush frame 15 surrounding the shielding cover 11 through the paint delivery hose 17. The low-resistance paint in the hollow paint brush frame 15 will soak the sponge brush 16 inside. The sponge brush 16 can move up and down along the surface of the cover under the drive of the lifting mechanism, realizing automatic and uniform application or repair of the paint layer on the outer surface of the shielding cover 11. This effectively solves the problem of paint layer peeling off due to bumps and ensures a long-lasting shielding effect.

[0025] It is worth noting that the protective top 13 not only provides physical protection to prevent falling objects from damaging the paint box 14 and the shielding cover 12, but also prevents the shielding cover 12 from being damaged by collisions with external objects due to the shielding top 13, thus eliminating the need for repainting. Its structure also helps to channel rainwater and other liquids, preventing them from accumulating at the top. The design of multiple paint delivery hoses 17 ensures that low-resistance paint can be evenly distributed to all parts of the hollow paint frame 15, thereby ensuring a consistent coating effect of the sponge brush 16.

[0026] Refer to the instruction manual appendix Figures 1 to 6 The output end of the lifting mechanism is connected to the hollow paint brush frame 15. The lifting mechanism is used to control the lifting and lowering movement of the sponge brush 16. The lifting mechanism includes a drive component and a linkage component. The output end of the drive component is connected to the linkage component. The drive component is used to control the lifting and lowering movement of the linkage component. The output end of the linkage component is connected to the hollow paint brush frame 15. The linkage component is used to control the lifting and lowering movement of the hollow paint brush frame 15.

[0027] It should be noted that the lifting mechanism adopts a modular design, consisting of a drive component and a linkage component. This design makes the power transmission path clear and maintenance convenient. The drive component provides the core power, while the linkage component converts the rotational motion into stable linear lifting motion and ultimately transmits the power to the hollow paint frame 15, driving its overall movement.

[0028] Refer to the instruction manual appendix Figures 5 to 6 The drive assembly includes a first fixing plate 211 mounted on the outside of the shield 11, a motor 212 mounted on the lower end of the first fixing plate 211, and a lead screw 213 mounted on the output end of the motor 212. The motor 212 is used to control the rotational movement of the lead screw 213.

[0029] It should be noted that the drive assembly adopts a scheme of motor 212 and lead screw 213. The first fixing plate 211 provides a sturdy and stable mounting base for motor 212, ensuring that the power source will not shake during operation. The lead screw 213 transmission has the characteristics of high precision and good self-locking, which can accurately control the lifting stroke and position of hollow paint brush frame 15. Even in the power failure state, it can keep the position still and prevent accidental slippage.

[0030] Refer to the instruction manual appendix Figures 4 to 6 The linkage component includes a drive plate 221 installed on the outside of the hollow paint frame 15 and a folded gooseneck tube 222 installed at the lower end of the drive plate 221. The drive plate 221 is threadedly connected to the lead screw 213.

[0031] It should be noted that the drive plate 221 has a threaded hole in the center that matches the lead screw 213, which can convert the rotational motion of the lead screw 213 into the linear motion of the drive plate 221 itself. The folded gooseneck tube 222 is connected to the lower end of the drive plate 221 and is fitted on the outside of the lead screw 213. Its telescopic feature ensures that the height can be adaptively adjusted during the lifting and lowering of the drive plate 221, thereby protecting the lead screw 213.

[0032] Refer to the instruction manual appendix Figures 4 to 6 The balancing mechanism is used to maintain the stability of the hollow paint frame 15 during lifting. The balancing mechanism includes a limiting component and a sliding component. The limiting component is used to limit the range of movement of the sliding component, and the sliding component is used to move up and down along the limiting component.

[0033] It should be noted that, since the hollow paint brush frame 15 is a ring structure, it is easy to get stuck, tilt or twist if driven by only one side of the lifting mechanism. The role of the balancing mechanism is to provide guidance and support for the hollow paint brush frame 15 on the symmetrical side, so as to ensure that it remains in a horizontal and stable state throughout the entire lifting process, thereby ensuring that the sponge brush 16 and the surface of the shielding cover 11 maintain uniform contact pressure and guarantee the quality of paint coating.

[0034] It is worth noting that the balancing mechanism and the lifting mechanism work together to ensure the smooth and reliable operation of the automatic paint touch-up function, avoiding uneven paint application or damage to the mechanism caused by structural instability.

[0035] Refer to the instruction manual appendix Figure 4 The limiting component includes a second fixing plate 311 installed on the outside of the shield 11 and a slide rod 312 installed on the upper end of the second fixing plate 311.

[0036] It should be noted that the second fixing plate 311 and the slide rod 312 constitute a simple and effective rigid guide structure. The second fixing plate 311 securely mounts the slide rod 312 onto the shielding cover 11, while the slide rod 312 provides a straight and smooth guide trajectory, constraining the sliding component to move only in the vertical direction.

[0037] Refer to the instruction manual appendix Figure 6 The sliding assembly includes a driven plate 321 mounted on the outside of the hollow paint frame 15, and the driven plate 321 is slidably connected to the slide rod 312.

[0038] It should be noted that when the lifting mechanism pushes one side of the hollow paint frame 15 upward through the drive plate 221, the driven plate 321 on the other side slides synchronously along the slide rod 312, which plays a good auxiliary support and guiding role and effectively prevents the frame from twisting.

[0039] Refer to the instruction manual appendix Figures 1 to 3 The upper end of the mounting base 1 is provided with a mounting groove 411, and the lower end of the mounting base 1 is provided with a heat dissipation groove 412. Multiple heat dissipation fins 413 are installed inside the heat dissipation groove 412. Four heat dissipation plates 414 are installed in a rectangular shape inside the shielding cover 11. Multiple reinforcing ribs 415 are installed on the outer side of the shielding cover 11. The inner side of the sponge brush 16 is in contact with the shielding cover 11 and the reinforcing ribs 415.

[0040] It should be noted that the high-voltage transformer generates heat during operation. The heat dissipation slots 412 and heat dissipation fins 413 of the mounting base 1 increase the contact area with air, which is conducive to heat dissipation. The heat dissipation plate 414 inside the shielding cover 11 also plays the role of increasing the heat dissipation area and uniform temperature. The outer reinforcing ribs 415 significantly enhance the structural rigidity of the shielding cover 11, preventing it from deforming due to internal pressure or external impact. At the same time, the design of the sponge brush 16 closely fits the surface of the cover and the contour of the reinforcing ribs 415, ensuring that the entire outer surface can be effectively painted or touched up.

[0041] Working principle: The high-voltage transformer is installed in the mounting groove 411 at the upper end of the mounting base 1, and electromagnetic shielding is performed by the shielding cavity composed of the shielding cover 11, the shielding cover 12, and the protective top 13. When the low-resistivity shielding paint on the outer surface of the shielding cover 11 is partially peeled off due to impact or other reasons, the motor 212 is periodically started by the PLC controller with preset parameters. The motor 212 drives the lead screw 213 at its output end to rotate. The drive plate 221, which is threaded to the lead screw 213, converts the rotational motion into linear lifting motion. The drive plate 221 drives the hollow paint brush frame 15 to move up and down along the outside of the shielding cover 11. At the same time, the low-resistivity shielding paint stored in the paint box 14 is continuously delivered to the hollow paint brush frame 15 through multiple paint delivery hoses 17, and the sponge brush 16 on its inner side is soaked. As the hollow paint brush frame 15 moves up and down, the soaked sponge brush 16 evenly coats the outer surface of the shielding cover 11 and its reinforcing ribs 415, achieving automatic repair of the peeling paint layer. During this process, in order to maintain the stability of the hollow paint brush frame 15, the balancing mechanism works synchronously. The driven plate 321 installed on the outside of the hollow paint brush frame 15 slides along the slide rod 312 fixed to the upper end of the second fixed plate 311, thereby preventing the hollow paint brush frame 15 from tilting or getting stuck. In addition, the heat generated by the high voltage transformer during operation can be effectively dissipated to the external environment through the heat dissipation groove 412 at the lower end of the mounting base 1 and its multiple heat dissipation fins 413, as well as the four rectangular heat dissipation plates 414 installed inside the shielding cover 11, thereby ensuring the stable operation of the entire device.

[0042] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A shielding device for a high-voltage instrument transformer, characterized in that: The system includes a mounting base (1), a shielding cover (11) installed on the upper end of the mounting base (1), a shielding cover (12) installed on the upper end of the shielding cover (11), a protective top (13) installed on the upper end of the shielding cover (12), a paint box (14) installed on the upper end of the shielding cover (12), a hollow paint brush frame (15) provided on the outside of the shielding cover (11), a sponge brush (16) installed on the inside of the hollow paint brush frame (15), multiple paint delivery hoses (17) installed on the outside of the paint box (14), and the end of the paint delivery hose (17) away from the paint box (14) connected to the hollow paint brush frame (15). A lifting mechanism is provided on the shielding cover (11), and a balancing mechanism is provided on the shielding cover (11).

2. A shielding device for a high-voltage transformer according to claim 1, characterized in that: The output end of the lifting mechanism is connected to the hollow paint brush frame (15). The lifting mechanism is used to control the lifting and lowering movement of the sponge brush (16). The lifting mechanism includes a drive component and a linkage component. The output end of the drive component is connected to the linkage component. The drive component is used to control the lifting and lowering movement of the linkage component. The output end of the linkage component is connected to the hollow paint brush frame (15). The linkage component is used to control the lifting and lowering movement of the hollow paint brush frame (15).

3. A shielding device for a high-voltage transformer according to claim 2, characterized in that: The drive assembly includes a first fixing plate (211) mounted on the outside of the shield (11), a motor (212) mounted on the lower end of the first fixing plate (211), and a lead screw (213) mounted on the output end of the motor (212). The motor (212) is used to control the rotation of the lead screw (213).

4. A shielding device for a high-voltage transformer according to claim 3, characterized in that: The linkage assembly includes a drive plate (221) installed on the outside of the hollow paint frame (15) and a folded gooseneck tube (222) installed at the lower end of the drive plate (221). The drive plate (221) is threadedly connected to the lead screw (213).

5. A shielding device for a high-voltage transformer according to claim 1, characterized in that: The balancing mechanism is used to maintain the stability of the hollow paint frame (15) during lifting. The balancing mechanism includes a limiting component and a sliding component. The limiting component is used to limit the range of movement of the sliding component, and the sliding component is used to move up and down along the limiting component.

6. A shielding device for a high-voltage transformer according to claim 5, characterized in that: The limiting assembly includes a second fixing plate (311) installed on the outside of the shield (11) and a slide rod (312) installed on the upper end of the second fixing plate (311).

7. A shielding device for a high-voltage transformer according to claim 6, characterized in that: The sliding assembly includes a driven plate (321) mounted on the outside of the hollow paint frame (15), and the driven plate (321) is slidably connected to the slide rod (312).

8. A shielding device for a high-voltage transformer according to claim 1, characterized in that: The upper end of the mounting base (1) is provided with a mounting groove (411), and the lower end of the mounting base (1) is provided with a heat dissipation groove (412). Multiple heat dissipation fins (413) are installed inside the heat dissipation groove (412). Four heat dissipation plates (414) are installed in a rectangular shape inside the shielding cover (11). Multiple reinforcing ribs (415) are installed on the outside of the shielding cover (11). The inner side of the sponge brush (16) is in contact with the shielding cover (11) and the reinforcing ribs (415).

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