A safety isolated mutual inductor

Abstract

The present application relates to the field of mutual inductor, especially to a kind of safety isolation mutual inductor.The safety isolation mutual inductor includes body and protective cover, and the body center is provided with bus hole, and the body outside is slidably sleeved with protective cover, and the protective cover is composed of the following parts: inner shell plate, outer shell plate, shielding plate, drive box, adjusting ring, rotating shaft, worm wheel and worm, the body outside is slidably sleeved with inner shell plate, the outer shell plate is fixedly connected on the outside of inner shell plate, and the sandwich layer is symmetrically arranged between the inner shell plate and the outer shell plate, and the circular hole is formed in the both sides of inner shell plate and outer shell plate.The safety isolation mutual inductor provided by the present application realizes the comprehensive protection of bus hole and internal structure of mutual inductor through the sandwich layer design between inner shell plate and outer shell plate, and the shielding plate is connected by equal distance sliding, which not only enhances the safety of equipment, reduces the interference of external factors on the operation of mutual inductor, but also prolongs the service life of mutual inductor.

Description

Technical Field

[0001] This invention relates to the field of current transformers, and more particularly to a safety isolation current transformer. Background Technology

[0002] With the rapid development of the power industry, instrument transformers, as indispensable key equipment in the power system, are crucial to the stability and safety of their performance. While traditional instrument transformer designs meet the needs of the power system to a certain extent, they still have shortcomings in some aspects. First, with the continuous growth of power transmission capacity and the continuous improvement of grid voltage levels, the performance requirements for instrument transformers are also increasing. Traditional instrument transformers are prone to overheating and insulation aging under high voltage and high current environments, affecting their long-term operational stability and safety. They are also susceptible to interference from external electromagnetic fields during operation. Second, in the power system, the busbar perforation area is an important channel for power transmission, but it also poses certain safety hazards. Traditional instrument transformers have certain limitations in protecting the busbar perforation area and cannot provide comprehensive and effective protection.

[0003] Therefore, it is necessary to provide a new safety isolation transformer to solve the above-mentioned technical problems. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a safety isolation transformer.

[0005] The safety isolation transformer provided by this invention includes:

[0006] The vessel body has a busbar perforation at its center.

[0007] A protective cover is slidably fitted onto the outer side of the device body. The protective cover consists of the following parts:

[0008] Inner shell plate, the outer side of the vessel body is slidably fitted with an inner shell plate;

[0009] The outer shell plate is fixedly connected to the outside of the inner shell plate. A sandwich layer is symmetrically provided between the inner shell plate and the outer shell plate. Circular holes are provided on both sides of the inner shell plate and the outer shell plate, and the circular holes are all set directly opposite the busbar through holes.

[0010] The shielding plate has several shielding plates that are equidistantly slidably connected inside the interlayer;

[0011] The drive box is located on one side of the outer casing.

[0012] The adjusting ring is rotatably connected inside the interlayer and is used to synchronously control the dispersion or convergence of multiple shielding plates.

[0013] The rotating shaft is rotatably connected inside the drive housing, and the rotating shaft is connected to the adjusting ring via a transmission.

[0014] A worm gear is fixedly connected to the outside of the shaft;

[0015] The worm gear is rotatably connected inside the drive box and meshes with the worm wheel.

[0016] Preferably, a sliding rod is fixedly connected inside the shielding plate, and sliding grooves are equally spaced on both sides of the inner shell plate. Sliding tracks are equally spaced inside the adjusting ring. One end of the sliding rod is slidably connected to the corresponding sliding groove, and the other end of the sliding rod is slidably connected to the corresponding sliding track.

[0017] Preferably, the shielding plates are arranged in an equilateral triangle, and multiple shielding plates are distributed at equal intervals and angles and spliced ​​together to form a regular hexagon, which is used to shield the busbar perforation.

[0018] Preferably, grooves are symmetrically formed on both sides of the bottom of the inner shell plate.

[0019] Preferably, an adjusting block is fixedly connected to the top of the worm gear.

[0020] Preferably, the bottom of the inner shell plate is provided with lugs on both sides, and the top of each lug is provided with a mounting hole.

[0021] Preferably, a ring gear is fixedly connected to the outer side of each adjusting ring, and a transmission gear is symmetrically fixedly connected to the outer side of the rotating shaft. The transmission gear meshes with the corresponding ring gear.

[0022] Preferably, the top of the inner shell plate has an opening.

[0023] Compared with related technologies, the safety isolation transformer provided by the present invention has the following advantages:

[0024] This invention provides a safety isolation transformer. Through a sandwich design between the inner and outer shell plates, combined with equally spaced sliding shielding plates, this transformer achieves comprehensive protection for the busbar perforation and the internal structure of the transformer. This protection mechanism not only enhances the safety of the equipment and reduces interference from external factors on the operation of the transformer, but also extends the service life of the transformer. Secondly, the synchronous dispersion function of the shielding plates allows users to precisely adjust the size of the exposed area so as to better fit the induction wire during wiring, improving the efficiency and accuracy of wiring and reducing the risk of damage caused by improper operation. At the same time, by adjusting the position of the shielding plates, users can flexibly control the protection range of the induction wire, ensuring effective protection in different working scenarios. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of the safety isolation transformer provided by the present invention;

[0026] Figure 2 for Figure 1 The diagram shows the structure of the vessel.

[0027] Figure 3 for Figure 1 The diagram shows the structure of the inner shell plate.

[0028] Figure 4 for Figure 1 The diagram shows a structural cross-sectional view of the outer shell panel.

[0029] Figure 5 for Figure 1 The structural cross-sectional view of the inner and outer shell plates is shown.

[0030] The following are the labeling elements in the diagram: 1. Body; 11. Busbar perforation; 2. Protective cover; 21. Inner shell plate; 22. Outer shell plate; 23. Interlayer; 24. Shielding plate; 25. Drive box; 26. Circular hole; 27. Adjusting ring; 28. Rotating shaft; 29. ​​Worm gear; 30. Worm; 241. Sliding rod; 211. Sliding groove; 271. Sliding track; 212. Groove; 31. Adjusting block; 213. Ear plate; 214. Mounting hole; 272. Ring gear; 281. Transmission gear; 215. Opening. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0033] Please see Figures 1 to 5 A safety isolation transformer, the safety isolation transformer comprising:

[0034] The device body 1 has a busbar through hole 11 at its center.

[0035] Protective cover 2 is slidably fitted onto the outside of the device body 1. Protective cover 2 consists of the following parts:

[0036] Inner shell plate 21, the outer side of the vessel body 1 is slidably fitted with inner shell plate 21;

[0037] The outer shell plate 22 is fixedly connected to the outside of the inner shell plate 21. A sandwich layer 23 is symmetrically provided between the inner shell plate 21 and the outer shell plate 22. Circular holes 26 are provided on both sides of the inner shell plate 21 and the outer shell plate 22, and the circular holes 26 are all positioned opposite the busbar through hole 11.

[0038] The shielding plate 24 and the interlayer 23 are all equidistantly slidably connected with several shielding plates 24 inside;

[0039] Drive box 25, drive box 25 is located on one side of outer shell plate 22;

[0040] Adjusting ring 27 is rotatably connected inside the interlayer 23. Adjusting ring 27 is used to synchronously control the synchronous dispersion or convergence movement of multiple shielding plates 24.

[0041] A rotating shaft 28 is rotatably connected inside the drive housing 25, and the rotating shaft 28 is connected to the adjusting ring 27 in a transmission manner.

[0042] Worm gear 29 is fixedly connected to the outer side of the rotating shaft 28;

[0043] The worm gear 30 is rotatably connected inside the drive box 25, and the worm gear 30 is meshed with the worm wheel 29.

[0044] It should be noted that the protective cover 2 is composed of an inner shell plate 21 and an outer shell plate 22, which form a sandwich 23. Several shielding plates 24 are equidistantly slidably connected inside the sandwich 23. Circular holes 26 are opened on both sides of the inner shell plate 21 and the outer shell plate 22. These circular holes 26 are set opposite to the busbar through hole 11 in the center of the device body 1, allowing the busbar to pass through.

[0045] Please see Figures 1 to 5 The shielding plate 24 is fixedly connected to the slide rod 241. The inner shell plate 21 has slide grooves 211 at equal intervals on both sides. The adjusting ring 27 has slide tracks 271 at equal intervals inside. One end of the slide rod 241 is slidably connected to the corresponding slide groove 211, and the other end of the slide rod 241 is slidably connected to the corresponding slide track 271.

[0046] It should be noted that when the adjusting ring 27 rotates, it pushes the slide rod 241 through the slide rail 271, causing the shielding plate 24 to slide along the slide groove 211, and simultaneously perform the dispersing or gathering motion.

[0047] Please see Figures 1 to 5 The shielding plate 24 is arranged in an equilateral triangle, and multiple shielding plates 24 are distributed at equal intervals and angles and spliced ​​together to form a regular hexagon, which is used to shield the busbar through hole 11.

[0048] It should be noted that the shielding plate 24 can move in a dispersed or converged manner simultaneously. By adjusting the position of the shielding plate 24, the size of the exposed area can be precisely controlled, thereby ensuring that it can better fit the sensor wire during wire threading and provide effective protection.

[0049] Please see Figures 1 to 5 The inner shell plate 21 has symmetrical grooves 212 on both sides of its bottom;

[0050] It should be noted that when the protective cover 2 is fitted onto the body 1, the groove 212 can expose the wiring terminals of the current transformer;

[0051] Please see Figures 1 to 5An adjusting block 31 is fixedly connected to the top of the worm gear 30;

[0052] It should be noted that the worm gear 30 is driven to rotate by operating the adjusting block 31, thereby controlling the opening and closing of the shielding plate 24;

[0053] Please see Figures 1 to 5 The inner shell plate 21 has lugs 213 on both sides of the bottom, and mounting holes 214 are opened on the top of the lugs 213.

[0054] It should be noted that: the mounting hole 214 is used to cooperate with the mounting plate of the current transformer itself. When fixing the current transformer with screws, the screws can also pass through the mounting hole 214 to fix the protective cover 2 to the outside of the current transformer.

[0055] Please see Figures 1 to 5 The outer side of the adjusting ring 27 is fixedly connected with a ring gear 272, and the outer side of the rotating shaft 28 is symmetrically fixedly connected with a transmission gear 281. The transmission gear 281 meshes with the corresponding ring gear 272.

[0056] It should be noted that the transmission gear 281, which is symmetrically and fixedly connected to the outer side of the rotating shaft 28, meshes with the ring gear 272 on the outer side of the adjusting ring 27, thereby driving the adjusting ring 27 to rotate.

[0057] Please see Figures 1 to 5 The inner shell plate 21 has an opening 215 at the top;

[0058] It should be noted that the size and position of the opening 215 are designed to expose the nameplate of the current transformer, so that users can easily look up information such as the model and specifications of the current transformer.

[0059] The working principle of the safety isolation transformer provided by this invention is as follows:

[0060] The protective cover 2 is composed of an inner shell plate 21 and an outer shell plate 22, which form a sandwich 23. Several shielding plates 24 are equidistantly connected inside the sandwich 23. Circular holes 26 are opened on both sides of the inner shell plate 21 and the outer shell plate 22. These circular holes 26 are set opposite to the busbar through hole 11 in the center of the device 1, allowing the busbar to pass through.

[0061] When it is necessary to protect the busbar through hole 11 or the internal structure of the transformer, the worm 30 is rotated by operating the adjusting block 31 at the top of the worm 30. The worm 30 meshes with the worm wheel 29, which is fixed on the rotating shaft 28. As the worm 30 rotates, the worm wheel 29 drives the rotating shaft 28 to rotate. The transmission gear 281, which is symmetrically fixedly connected to the outside of the rotating shaft 28, meshes with the ring gear 272 on the outside of the adjusting ring 27, thereby driving the adjusting ring 27 to rotate.

[0062] The adjusting ring 27 has equidistant slide rails 271 inside. One end of the slide rod 241 fixedly connected inside the shielding plate 24 is slidably connected to the slide grooves 211 on both sides of the inner shell plate 21, and the other end is slidably connected to the slide rails 271 of the adjusting ring 27. Therefore, when the adjusting ring 27 rotates, the slide rod 241 is pushed through the slide rails 271, so that the shielding plate 24 slides along the slide grooves 211 to the round hole 26, forming a regular hexagonal structure that completely shields the busbar through hole 11.

[0063] Conversely, when it is necessary to expose the busbar through-hole 11, the adjusting block 31 of the worm 30 is operated in the reverse direction, causing the worm 30 to rotate in the opposite direction. This, in turn, drives the adjusting ring 27 to rotate in the opposite direction through the worm wheel 29, the worm 30 mechanism, and the transmission gear 281, so that multiple shielding plates 24 are dispersed synchronously. By adjusting the position of the shielding plates 24, the size of the exposed area can be precisely controlled, thereby ensuring that the busbar can be better fitted during wire threading and providing effective protection.

[0064] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A safety isolation transformer, characterized in that, include: The vessel body (1) has a busbar perforation (11) at the center of the vessel body (1). The protective cover (2) is slidably fitted on the outside of the body (1). The protective cover (2) consists of the following parts: Inner shell plate (21), the outer side of the vessel body (1) is slidably fitted with inner shell plate (21); The outer shell plate (22) is fixedly connected to the outside of the inner shell plate (21). A sandwich layer (23) is symmetrically provided between the inner shell plate (21) and the outer shell plate (22). Circular holes (26) are provided on both sides of the inner shell plate (21) and the outer shell plate (22), and the circular holes (26) are all directly opposite the busbar through hole (11). The shielding plate (24) and the interlayer (23) are all equidistantly connected with several shielding plates (24). The drive box (25) is located on one side of the outer shell plate (22); Adjusting ring (27) is rotatably connected inside the interlayer (23). Adjusting ring (27) is used to synchronously control the synchronous dispersion or convergence of multiple shielding plates (24). The rotating shaft (28) is rotatably connected inside the drive box (25), and the rotating shaft (28) is connected to the adjusting ring (27) in a transmission connection; Worm gear (29), the outer side of the shaft (28) is fixedly connected to the worm gear (29); The worm (30) is rotatably connected inside the drive box (25), and the worm (30) is meshed with the worm wheel (29); The shielding plate (24) is fixedly connected to the slide rod (241), and the inner shell plate (21) is provided with slide grooves (211) at equal intervals on both sides. The adjusting ring (27) is provided with slide tracks (271) at equal intervals. One end of the slide rod (241) is slidably connected to the corresponding slide groove (211), and the other end of the slide rod (241) is slidably connected to the corresponding slide track (271). The shielding plate (24) is arranged in an equilateral triangle, and multiple shielding plates (24) are distributed at equal intervals and angles and spliced ​​together to form a regular hexagon, which is used to shield the busbar perforation (11).

2. The safety isolation transformer according to claim 1, characterized in that, The inner shell plate (21) has symmetrical grooves (212) on both sides of its bottom.

3. The safety isolation transformer according to claim 1, characterized in that, An adjusting block (31) is fixedly connected to the top of the worm (30).

4. The safety isolation transformer according to claim 1, characterized in that, The inner shell plate (21) has ear pieces (213) on both sides of the bottom, and the top of the ear pieces (213) has mounting holes (214).

5. The safety isolation transformer according to claim 1, characterized in that, The outer side of the adjusting ring (27) is fixedly connected with a ring gear (272), and the outer side of the rotating shaft (28) is symmetrically fixedly connected with a transmission gear (281). The transmission gear (281) meshes with the corresponding ring gear (272).

6. The safety isolation transformer according to claim 1, characterized in that, An opening (215) is provided at the top of the inner shell plate (21).

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