A monitoring device and method for power equipment monitoring scenarios

CN121395659BActive Publication Date: 2026-08-14SHANGHAI JIAQI NETWORK TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-09-16
Publication Date
2026-08-14

AI Technical Summary

Technical Problem

[0003]基于此,有必要针对在医疗等电力使用场景中,遇到断电切换线路突发情况时,难以跟随调整监控线路,导致电力线路监控效果不佳问题,提供一种用于电力设备监控场景的监控设备及监控方法

Benefits of technology

[0015]上述用于电力设备监控场景的监控设备及监控方法,可以根据监控切换机构的作用,当系统发生断电切换线路时,监控系统可自动同步切换至新线路的监测模式,该装置通过转动铁轴转动带动连接铁端头与相邻的非晶合金铁芯端部贴合,使得连接铁端头与相邻非晶合金铁芯贴合紧密,形成类似铁芯的效果,达到可以在断电切换线路时,跟随线路进行调整监控的效果,确保线路切换过程中监控数据的连续性和完整性,从而保障电力线路的全周期监控有效性,保障了对电力线路监控效果;

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Abstract

This invention relates to a monitoring device and method for power equipment monitoring scenarios, belonging to the field of power monitoring technology. The monitoring device and method for power equipment monitoring scenarios include: multiple through-shell housings, each housing containing insulated copper wires, with connecting terminals fixedly connected to the ends of the insulated copper wires, and two connecting terminals mounted on the surface of the through-shell housings; a monitoring switching mechanism installed between the multiple through-shell housings; and, under the energized operation of the power system, a dynamic monitoring strategy is implemented based on the line load characteristics of different power consumption scenarios. When a power outage occurs and a line is switched, the monitoring system can automatically and synchronously switch to the monitoring mode of the new line, ensuring the continuity and integrity of monitoring data during the line switching process, thereby guaranteeing the effectiveness of full-cycle monitoring of power lines and ensuring the monitoring effect of power lines.
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Description

Technical Field

[0001] This invention relates to the field of power monitoring technology, and in particular to a monitoring device and method for power equipment monitoring scenarios. Background Technology

[0002] In specialized fields such as hospitals, power equipment needs to be monitored. The electronic equipment used needs to transmit some electrical signals, and the power equipment needs to be monitored during the signal transmission process. Common monitoring devices include current transformers. Current transformers are key devices used for current transformation and isolation in power systems and are one of the core components of power monitoring systems. In scenarios where power equipment is used in medical settings, power supply lines will be replaced in the event of a sudden power outage, and the replacement circuit needs to be monitored synchronously. A search of existing Chinese patents reveals that "A Remote Power Monitoring Device" (publication number CN222503341U) allows for monitoring of the lower end of a support plate by changing the position of the monitor, thus eliminating the need for multiple monitors. However, in power usage scenarios such as medical settings, this device struggles to adjust the monitoring line in the event of a power outage or line switching, resulting in poor power line monitoring performance. Summary of the Invention

[0003] Therefore, it is necessary to provide a monitoring device and method for power equipment monitoring scenarios, which is needed to address the problem that it is difficult to adjust the monitoring line when encountering sudden power outages and line switching in power use scenarios such as medical care, resulting in poor power line monitoring performance.

[0004] A monitoring device for power equipment monitoring scenarios includes: multiple through-hole housings, each housing having an insulated copper wire inside, the ends of which are fixedly connected to connecting terminals, and two connecting terminals mounted on the surface of the through-hole housings; a monitoring switching mechanism installed between the multiple through-hole housings, the surface of which extends into the interior of the through-hole housings, and the insulated copper wires wound around the surface of which; wherein the monitoring switching mechanism includes a switching component connected to the upper end of the multiple through-hole housings, a matching component at the lower end of the switching component extending into the interior of the matching component, a servo motor mounted at the upper end of the switching component, the surface of which extends into the interior of adjacent through-hole housings, and the matching component mounted at the other end of the multiple through-hole housings.

[0005] In one embodiment, the switching assembly includes a top insulating shell fixedly connected to the upper end of a plurality of through-core outer shells, a middle insulating tube fixedly connected to the lower end of the top insulating shell, a rotating iron shaft rotatably connected to the inner wall of the middle insulating tube, a connecting iron end fixedly connected to the surface of the rotating iron shaft, the lower end of the rotating iron shaft extending into the interior of the alignment assembly, and a plurality of amorphous alloy iron cores fixedly connected inside the top insulating shell, the plurality of amorphous alloy iron cores being evenly distributed in a ring along the inner wall of the top insulating shell.

[0006] In one embodiment, the alignment assembly includes a bottom insulating shell fixedly connected to the lower end of the middle insulating tube, the bottom insulating shell being fixedly connected to the lower end of the through-core outer shell, an iron metal disk being fixedly connected to the inner wall of the bottom insulating shell, a bottom insulating block being fixedly connected to the lower end of the iron metal disk, the bottom insulating block being fixedly connected to the inner wall of the bottom insulating shell, an inner cavity being formed at the upper end of the bottom insulating block, and the surface of the iron metal disk being fixedly connected to the lower end of the adjacent amorphous alloy iron core.

[0007] In one embodiment, the surface of the amorphous alloy core penetrates through the top insulating shell and extends into the interior of the adjacent through-core shell, the insulating copper wire is wound around the surface of the amorphous alloy core, and the lower end of the amorphous alloy core is connected to the interior of the alignment assembly.

[0008] In one embodiment, a vertical square groove is provided at the upper end of the rotating iron shaft, and an insulating ceramic square column is slidably connected to the inner wall of the vertical square groove. The insulating ceramic square column is fixedly connected to the output shaft of the servo motor.

[0009] In one embodiment, the end of the amorphous alloy core near the servo motor has a concave arc-shaped surface, and the surface of the connecting iron end away from the rotating iron shaft matches the end of the amorphous alloy core.

[0010] In one embodiment, a positioning metal block is fixedly connected to the surface of the rotating iron shaft away from the connecting iron end. The upper cross-section of the positioning metal block is a rounded triangle, and the lower cross-section of the positioning metal block is a circle.

[0011] In one embodiment, an insulating connecting frame is provided inside the inner cavity, the insulating connecting frame is fixedly connected to the lower end of the rotating iron shaft, and a nickel metal disk is fixedly connected to the lower end of the insulating connecting frame.

[0012] In one embodiment, the lower end of the bottom insulating block is provided with a bottom circular groove, the inner wall of the bottom circular groove is fixedly connected with a snap-fit ​​ring, and a permanent magnet is installed on the inner wall of the bottom circular groove.

[0013] In one embodiment, the upper end of the ferrous metal disc has a top slot, and the lower end of the top slot is connected to the upper end of the inner cavity.

[0014] A monitoring method for power scenario monitoring equipment: A1. Pass the common line and the spare line through the inside of the adjacent through-core shell respectively. At this time, make the connecting iron end touch the upper end of the amorphous alloy iron core near the common line, and connect multiple sets of connecting ends to the multiphase current detector through wires. A2. In the event of a power outage, the servo motor is driven by the backup power supply to rotate, so that the connecting iron end will contact the end of the amorphous alloy iron core near the backup line. At this time, the positioning metal block moves to the matching position of the top empty slot, so that the nickel metal disk is attracted by the magnetic force of the permanent magnet, and the nickel metal disk maintains the downward trend. A3. Because the insulating connector is made of insulating material, the nickel metal disc can be prevented from affecting the rotating iron shaft. Furthermore, the connecting iron end will form an iron core structure with the amorphous alloy iron core of the backup line, and the backup line can be monitored through the insulated copper wire.

[0015] The aforementioned monitoring equipment and method for power equipment monitoring scenarios can automatically switch to the monitoring mode of the new line when a power outage occurs and the line is switched, based on the function of the monitoring switching mechanism. The device rotates the iron shaft to drive the connecting iron end to fit with the end of the adjacent amorphous alloy iron core, making the connecting iron end fit tightly with the adjacent amorphous alloy iron core, forming an effect similar to an iron core. This achieves the effect of adjusting and monitoring the line when switching lines during a power outage, ensuring the continuity and integrity of monitoring data during the line switching process, thereby ensuring the effectiveness of full-cycle monitoring of power lines and guaranteeing the monitoring effect of power lines. By setting up the alignment component, the nickel metal disk can be positioned so that the positioning metal block moves to the matching position in the top slot. This causes the nickel metal disk to be attracted by the magnetic force of the permanent magnet, and the nickel metal disk maintains a downward trend. The insulating connecting frame and the rotating iron shaft ensure that the beveled end of the connecting iron end fits tightly with the beveled end of the amorphous alloy iron core, ensuring the monitoring effect of different lines. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the monitoring switching mechanism of the present invention; Figure 3 This is an exploded view of the internal structure of the monitoring switching mechanism of the present invention; Figure 4 This is a partial structural diagram of the switching component of the present invention; Figure 5 This is a schematic diagram of the vertical square groove of the present invention; Figure 6 This is a schematic diagram of the connection between the insulating connecting frame and the nickel metal disk of the present invention; Figure 7 This is a schematic diagram showing the connection between the rotating iron shaft and the connecting iron end of the present invention; Figure 8 This is a partially exploded cross-sectional view of the quasi-opposition component of the present invention.

[0018] Figure label: 100. Through-hole outer shell; 110. Insulated copper wire; 200. Connecting end; 300. Monitoring switching mechanism; 310. Switching component; 311. Top insulating shell; 312. Middle insulating tube; 313. Rotating iron shaft; 314. Connecting iron end; 315. Positioning metal block; 316. Amorphous alloy iron core; 317. Vertical square slot; 318. Insulated ceramic square column; 320. Alignment component; 321. Bottom insulating shell; 322. Iron metal disc; 323. Bottom insulating block; 324. Inner cavity; 325. Top slot; 326. Insulated connecting frame; 327. Nickel metal disc; 328. Bottom circular slot; 329. Permanent magnet; 3281. Snap-fit ​​ring; 330. Servo motor. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The following is combined with Figures 1-8The present invention describes a monitoring device for power equipment monitoring scenarios, comprising: a plurality of through-hole housings 100, wherein an insulated copper wire 110 is disposed inside the through-hole housing 100, and the ends of the insulated copper wire 110 are fixedly connected to connecting ends 200, and two connecting ends 200 are mounted on the surface of the through-hole housing 100; a monitoring switching mechanism 300, which is mounted between the plurality of through-hole housings 100, the surface of the monitoring switching mechanism 300 extends into the interior of the through-hole housings 100, and the insulated copper wire 110 is wound around the surface of the monitoring switching mechanism 300; The monitoring switching mechanism 300 includes a switching component 310 connected to the upper end of multiple through-hole housings 100, a matching component 320 provided at the lower end of the switching component 310, the lower end of the switching component 310 extending into the interior of the matching component 320, a servo motor 330 installed at the upper end of the switching component 310, the surface of the switching component 310 extending into the interior of adjacent through-hole housings 100, and the matching component 320 installed at the other end of the multiple through-hole housings 100. It should be noted that, since the current of electronic equipment is relatively small, during the use of this device, the commonly used circuit and the spare circuit can pass through the interior of the adjacent through-hole housing 100 respectively. The insulated copper wire 110 is wound around the surface of the adjacent amorphous alloy iron core 316 away from the rotating iron shaft 313. The amorphous alloy iron core 316, the rotating iron shaft 313, and the connecting iron end 314 form a closed iron core that is almost complete. Combined with the insulated copper wire 110, the commonly used circuit of the electronic equipment that needs to be detected can be detected when it passes through the through-hole housing 100. The connecting end 200 can be used with an external multiphase current detector. The servo motor 330 and the changeover switch can be operated synchronously. The changeover switch can be connected to the insulated ceramic square post 318 through a belt. The servo motor 330 can be replaced by the belt and connecting rod to drive the operation. The specific adjustment should be made according to the usage environment. like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8As shown, the switching assembly 310 includes a top insulating shell 311 fixedly connected to the upper end of multiple through-core shells 100. A middle insulating tube 312 is fixedly connected to the lower end of the top insulating shell 311. A rotating iron shaft 313 is rotatably connected to the inner wall of the middle insulating tube 312. A connecting iron end 314 is fixedly connected to the surface of the rotating iron shaft 313. The lower end of the rotating iron shaft 313 extends into the interior of the alignment assembly 320. Multiple amorphous alloy iron cores 316 are fixedly connected inside the top insulating shell 311. The multiple amorphous alloy iron cores 316 are evenly distributed in a ring along the inner wall of the top insulating shell 311. The surface of the amorphous alloy iron cores 316 penetrates the top insulating shell 311 and extends into the interior of the adjacent through-core shell 100. An insulating copper wire 110 is wound around the surface of the amorphous alloy iron core 316. The lower end of the amorphous alloy iron core 316 is connected to the interior of the alignment assembly 320. A vertical square groove 317 is provided at the upper end of the rotating iron shaft 313. An insulating ceramic square column 318 is slidably connected to the inner wall of the vertical square groove 317. The insulating ceramic square column 318 is fixedly connected to the output shaft of the servo motor 330. The end of the amorphous alloy iron core 316 near the servo motor 330 has an inwardly concave arc-shaped surface. The surface of the connecting iron end 314 away from the rotating iron shaft 313 matches the end of the amorphous alloy iron core 316. A positioning metal block 315 is fixedly connected to the surface of the rotating iron shaft 313 away from the connecting iron end 314. The upper cross section of the positioning metal block 315 is a rounded triangle, and the lower cross section of the positioning metal block 315 is circular. During monitoring, in the event of a sudden power outage, the insulating ceramic square column 318 can be offset by a changeover switch. The rotating insulating ceramic square column 318, in conjunction with the vertical square groove 317, causes the rotating iron shaft 313 to rotate synchronously. This allows for the detection of the backup line. At this time, the connecting iron end 314 can be offset at an angle under the drive of the rotating iron shaft 313. The synchronous rotation of the iron shaft 313 causes the positioning metal block 315 to rotate synchronously. The positioning metal block 315 matches the top empty groove 325. As the positioning metal block 315 rotates, it pushes the rotating iron shaft 313 upward. This, in turn, causes the connecting iron end 314 to offset and push upward simultaneously. When the rotating iron shaft 313 drives the positioning metal block 315 to rotate 120 degrees, the rotation angle of the positioning metal block 315 is appropriately adjusted according to the included angle between the adjacent amorphous alloy iron cores 316. The rotation of the iron shaft 313 drives the connecting iron end 314 to fit with the end of the adjacent amorphous alloy iron core 316, so that the connecting iron end 314 and the adjacent amorphous alloy iron core 316 fit tightly, forming an effect similar to an iron core. This achieves the effect of adjusting and monitoring the line when switching lines during power outages. like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8 As shown, the alignment assembly 320 includes a bottom insulating shell 321 fixedly connected to the lower end of the middle insulating tube 312. The bottom insulating shell 321 is fixedly connected to the lower end of the through-core outer shell 100. An iron metal disk 322 is fixedly connected to the inner wall of the bottom insulating shell 321. A bottom insulating block 323 is fixedly connected to the lower end of the iron metal disk 322. The bottom insulating block 323 is fixedly connected to the inner wall of the bottom insulating shell 321. An inner cavity 324 is opened at the upper end of the bottom insulating block 323. The surface of the iron metal disk 322 is fixedly connected to the lower end of the adjacent amorphous alloy iron core 316. An insulating connecting frame 326 is provided inside the inner cavity 324. The insulating connecting frame 326 is fixedly connected to the lower end of the rotating iron shaft 313. A nickel metal disk 327 is fixedly connected to the lower end of the insulating connecting frame 326. A bottom circular groove 328 is opened at the lower end of the bottom insulating block 323. A snap ring 3281 is fixedly connected to the inner wall of the bottom circular groove 328. A permanent magnet 329 is installed on the inner wall of the bottom circular groove 328. A top empty groove 325 is opened at the upper end of the iron metal disk 322. The lower end of the top empty groove 325 communicates with the upper end of the inner cavity 324. During the use of this device, the lower end of the amorphous alloy iron core 316 is kept firmly connected by the iron metal disk 322, and the gap between the upper end of the iron metal disk 322 and the inner top wall of the bottom insulating shell 321 is greater than the height of the positioning metal block 315, so that the positioning metal block 315 can be smoothly adjusted inside the bottom insulating shell 321. The insulating connecting frame 326 is used to keep the nickel metal disk 327 insulated from the rotating iron shaft 313. By setting the nickel metal disk 327, the positioning metal block 315 can be moved to the position where it matches the top empty slot 325, so that the nickel metal disk 327 is attracted by the magnetic force of the permanent magnet 329. The nickel metal disk 327 maintains a downward trend, and then through the insulating connecting frame 326 and the rotating iron shaft 313, the end bevel of the connecting iron end 314 fits tightly with the end bevel of the amorphous alloy iron core 316, forming an effect similar to a stable iron core.

[0021] A monitoring method for power scenario monitoring equipment: A1. Pass the common line and the spare line through the inside of the adjacent through-core housing 100 respectively. At this time, the connecting iron end 314 is brought into contact with the upper end of the amorphous alloy iron core 316 near the common line, and the multiple sets of connecting ends 200 are connected to the multiphase current detector through wires. A2. In the event of a power outage, the servo motor 330 is driven to rotate by the backup power supply, so that the connecting iron end 314 will contact the end of the amorphous alloy iron core 316 near the backup line. At this time, the positioning metal block 315 moves to the matching position of the top empty slot 325, so that the nickel metal disk 327 is attracted by the magnetic force of the permanent magnet 329, and the nickel metal disk 327 maintains the downward moving trend. A3. Since the insulating connector 326 is made of insulating material, the nickel metal disc 327 can be prevented from affecting the rotating iron shaft 313. Furthermore, the connecting iron end 314 will form an iron core structure with the amorphous alloy iron core 316 of the backup line. The backup line can be monitored through the insulated copper wire 110.

[0022] Working principle: The servo motor 330 drives the insulating ceramic square column 318 to offset. The insulating ceramic square column 318, in conjunction with the vertical square groove 317, drives the rotating iron shaft 313 to rotate accordingly. The connecting iron end 314 shifts its angle under the drive of the rotating iron shaft 313. The synchronously rotating iron shaft 313 drives the positioning metal block 315 to rotate synchronously. The positioning metal block 315 matches the top empty groove 325. During the rotation of the positioning metal block 315, it pushes the rotating iron shaft 313 to move upward. 3. While the connecting iron end 314 is offset, it pushes upward. The nickel metal disk 327 is attracted by the magnetic force of the permanent magnet 329. The nickel metal disk 327 maintains the downward trend. The insulating connecting frame 326 and the rotating iron shaft 313 make the end slope of the connecting iron end 314 fit tightly with the end slope of the amorphous alloy iron core 316. The rotation of the rotating iron shaft 313 drives the connecting iron end 314 to fit with the end of the adjacent amorphous alloy iron core 316. The connecting iron end 314 fits tightly with the adjacent amorphous alloy iron core 316.

[0023] It should be noted that the servo motor 330 and multiphase current detector mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the servo motor 330 and multiphase current detector can be powered by the built-in power supply or by the mains power. The specific power supply method depends on the situation and will not be elaborated here.

[0024] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0025] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A monitoring device for power equipment monitoring scenarios, characterized in that, include: Multiple through-hole shells (100), each through-hole shell (100) has an insulated copper wire (110) inside, and the ends of the insulated copper wire (110) are fixedly connected to connecting heads (200), with two connecting heads (200) installed on the surface of the through-hole shell (100); A monitoring switching mechanism (300) is installed between a plurality of through-hole housings (100), the surface of the monitoring switching mechanism (300) extends into the interior of the through-hole housings (100), and the insulated copper wire (110) is wound around the surface of the monitoring switching mechanism (300); The monitoring switching mechanism (300) includes a switching component (310) connected to the upper end of a plurality of through-hole shells (100). A matching component (320) is provided at the lower end of the switching component (310). The lower end of the switching component (310) extends into the interior of the matching component (320). A servo motor (330) is installed at the upper end of the switching component (310). The surface of the switching component (310) extends into the interior of an adjacent through-hole shell (100). The matching component (320) is installed at the other end of the plurality of through-hole shells (100). The switching assembly (310) includes a top insulating shell (311) fixedly connected to the upper end of a plurality of through-hole shells (100). A middle insulating tube (312) is fixedly connected to the lower end of the top insulating shell (311). A rotating iron shaft (313) is rotatably connected to the inner wall of the middle insulating tube (312). A connecting iron end (314) is fixedly connected to the surface of the rotating iron shaft (313). The lower end of the rotating iron shaft (313) extends into the interior of the alignment assembly (320). A plurality of amorphous alloy iron cores (316) are fixedly connected inside the top insulating shell (311). The plurality of amorphous alloy iron cores (316) are evenly distributed in a ring shape along the inner wall of the top insulating shell (311). The alignment assembly (320) includes a bottom insulating shell (321) fixedly connected to the lower end of the middle insulating tube (312). The bottom insulating shell (321) is fixedly connected to the lower end of the through-core outer shell (100). An iron metal disc (322) is fixedly connected to the inner wall of the bottom insulating shell (321). A bottom insulating block (323) is fixedly connected to the lower end of the iron metal disc (322). The bottom insulating block (323) is fixedly connected to the inner wall of the bottom insulating shell (321). An inner cavity (324) is opened at the upper end of the bottom insulating block (323). The surface of the iron metal disc (322) is fixedly connected to the lower end of the adjacent amorphous alloy iron core (316). The upper end of the rotating iron shaft (313) is provided with a vertical square groove (317), and an insulating ceramic square column (318) is slidably connected to the inner wall of the vertical square groove (317). The insulating ceramic square column (318) is fixedly connected to the output shaft of the servo motor (330). An insulating connecting frame (326) is provided inside the inner cavity (324). The insulating connecting frame (326) is fixedly connected to the lower end of the rotating iron shaft (313). A nickel metal disk (327) is fixedly connected to the lower end of the insulating connecting frame (326). The upper end of the iron metal disc (322) is provided with a top slot (325), and the lower end of the top slot (325) is connected to the upper end of the inner cavity (324).

2. The monitoring equipment for power equipment monitoring scenarios according to claim 1, characterized in that, The surface of the amorphous alloy core (316) penetrates through the top insulating shell (311) and extends into the interior of the adjacent through-core shell (100), the insulating copper wire (110) is wound around the surface of the amorphous alloy core (316), and the lower end of the amorphous alloy core (316) is connected to the interior of the alignment assembly (320).

3. The monitoring equipment for power equipment monitoring scenarios according to claim 2, characterized in that, The end of the amorphous alloy core (316) near the servo motor (330) has a concave arc-shaped surface, and the surface of the connecting iron end (314) away from the rotating iron shaft (313) matches the end of the amorphous alloy core (316).

4. The monitoring equipment for power equipment monitoring scenarios according to claim 3, characterized in that, A positioning metal block (315) is fixedly connected to the surface of the rotating iron shaft (313) away from the connecting iron end (314). The upper cross section of the positioning metal block (315) is a rounded triangle, and the lower cross section of the positioning metal block (315) is a circle.

5. The monitoring equipment for power equipment monitoring scenarios according to claim 1, characterized in that, The bottom insulating block (323) has a bottom circular groove (328) at its lower end. A snap ring (3281) is fixedly connected to the inner wall of the bottom circular groove (328), and a permanent magnet (329) is installed on the inner wall of the bottom circular groove (328).

Citation Information

Patent Citations

  • Remote power monitoring device

    CN222503341U

  • Circuit switching device used in double-power-supply 10-kilovolt line multi-stage protection device

    CN216015209U