Six-column ac overvoltage protector with redundancy protection function

Abstract

The utility model relates to the field of voltage protection especially relates to six -column alternating -current overvoltage protector with redundancy protection function, including bottom plate, body, installation slot, linear motor and deformation metal, the bottom plate upper end is equipped with six square array distribution's protector body, the bottom plate upper end is equipped with the installation slot, the body is installed in the inside of installation slot, be equipped with linear motor between the installation slot, the installation slot bottom is equipped with deformation metal. The device utilizes six bodies of redundancy design cooperation deformation metal to realize mechanical fault separation, and utilizes insulating plate to guarantee separation state again, solves the existing voltage protector after still easy to appear homing to cause circuit secondary short circuit, the problem of influence circuit normal use after the self -protection mechanism triggers.

Description

Technical Field

[0001] This utility model relates to the field of voltage protection, and in particular to a six-column AC overvoltage protector with redundant protection function. Background Technology

[0002] Voltage protection devices are primarily used to prevent electrical equipment from being damaged by overvoltage (such as lightning strikes or operational overvoltage) or undervoltage (such as power grid anomalies). Their core functions include: rapidly dissipating energy when voltage abnormally rises to prevent insulation breakdown or component burnout; disconnecting the circuit when voltage is too low to prevent equipment malfunctions due to undervoltage operation (such as motor stall); maintaining the power grid or equipment within a safe voltage range to reduce the risk of power outages; and reducing long-term stress damage to equipment by suppressing voltage fluctuations.

[0003] A search revealed patent publication number CN212572073U, which discloses a general-purpose high-capacity combined overvoltage protector. The protector includes a housing and terminals mounted on the top surface of the housing. A cable is installed at the upper end of each terminal. An insulating sleeve is fitted over the terminal and fixedly connected to it. An insulating cable sleeve is wrapped around the outer surface of the cable. The insulating sleeve and the insulating cable sleeve are integrally molded. This application allows workers to easily embed the housing into the installation location, minimizing the risk of collision with other equipment in other switchgear during installation, thus facilitating the installation of the overvoltage protector.

[0004] While existing technologies can provide some voltage protection, they also have drawbacks: after the self-protection mechanism is triggered, existing voltage protectors are still prone to reverting to their original position, causing a secondary short circuit and affecting the normal operation of the circuit. In view of this, we propose a six-column AC overvoltage protector with redundant protection function, which solves the above problems. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a six-column AC overvoltage protector with redundant protection function.

[0006] The technical solution of this utility model: a six-column AC overvoltage protector with redundant protection function, including a base plate, a body, a mounting slot, a linear motor and deformable metal. The upper end of the base plate is provided with six protector bodies arranged in a square array. The upper end of the base plate is provided with a mounting slot. The body is installed inside the mounting slot. A linear motor is provided between the mounting slots. Deformable metal is provided at the bottom of the mounting slot.

[0007] When using this device, fix the base in a suitable position, then connect the wiring port to the circuit. The six bodies are designed in parallel. When a short circuit occurs in one body, the deformable metal will be heated and deformed upwards, breaking through the tightening force of the screw and lifting the body to separate it from the contact. Then, the controller starts the linear motor at the corresponding point to drive the insulating plate to insert into the slot. The insulating plate is located between the contact and the body. Even if the shape memory metal is pre-cooled and returns to its original position, it will be blocked by the insulating plate, waiting for the back-end personnel to come for maintenance. The other five bodies can still protect the circuit voltage from overload. Overall, it achieves a redundant voltage protection effect, which is more significant and will not cause secondary damage, making it highly practical.

[0008] Preferably, the base plate has latches on both sides, positioning holes at the four corners, and a wiring port at the top of the main body. The latches facilitate quick installation and disassembly for maintenance, while also enhancing the stability of the base plate and the cabinet, preventing poor contact due to vibration. The positioning holes at the four corners ensure that the protector is aligned with the holes in the distribution cabinet during installation, improving assembly efficiency and avoiding insufficient electrical clearance caused by misalignment. The wiring port is located at the top of the main body.

[0009] Preferably, slots are provided on both sides of the mounting groove, and an insulating plate is fixed to the output end of the linear motor. The thickness of the insulating plate is less than the thickness of the slot to ensure accurate alignment when the insulating plate is inserted, avoid jamming or displacement, and improve the reliability of the isolation action.

[0010] Preferably, the bottom of the mounting groove is provided with a mounting base, and the deformable metal is fixed to the upper end of the mounting base by two screws. The deformable metal and the mounting base can be pre-assembled, which facilitates mass production and quick replacement, reduces maintenance costs, and uses anti-reverse threads or spring washers to ensure that the deformable metal remains in a fixed position under long-term vibration environment to avoid malfunction.

[0011] Preferably, the body is fixed to the upper end of the mounting groove by a limiting ring, and the limiting ring is fixed to the upper end of the mounting groove by a screw. The screw can position the body, but it will be lifted by the deformed metal, causing the body to separate from the contact.

[0012] Preferably, the bottom of the mounting groove is provided with a contact, which is electrically connected to the bottom of the body. The contact has a built-in spring structure to ensure a tight fit with the bottom of the body, so that no electric arc is generated even in a vibration environment. When the contact is separated from the body, the arc is quickly pulled out, and with the insertion of the insulating plate, the arc is doubly blocked from reigniting.

[0013] Preferably, a controller is fixed to the upper end of the linear motor, and a current detector is fixed to the outer wall of one side of the base plate. The current detector monitors the current of each body in real time, provides early warning of abnormalities (such as increased leakage current), and records the fault location. It also supports remote operation and maintenance controllers to drive the motor according to current or temperature signals.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] I. This utility model utilizes six protector bodies connected independently in parallel to ensure that the remaining bodies can still provide overvoltage protection even if one body fails, significantly improving system reliability. When a body heats up due to a short circuit, the deformable metal deforms under heat, automatically lifting the faulty body to achieve rapid physical isolation and avoid the risk of continuous short circuit. The controller drives a linear motor to insert into the insulating plate to ensure that the faulty body cannot re-contact even after cooling, completely preventing secondary conduction. After fault isolation, the remaining five bodies continue to work, ensuring circuit safety without the need for immediate shutdown for maintenance. It is suitable for power systems with high reliability requirements.

[0016] II. Based on the first beneficial effect, this device achieves high reliability, self-healing capability, and long lifespan for overvoltage protectors through three core innovations: a six-column parallel redundant design, deformation metal thermal triggering isolation, and a linear motor-driven insulating plate dual-blocking mechanism. Specific advantages include: redundancy and safety (single column failure does not affect the overall protection function, meeting the continuous operation requirements of the power system); rapid isolation (deformation metal + linear motor coordinated action physically isolates the faulty column, preventing secondary damage); intelligent operation and maintenance (current detection and controller linkage support status monitoring and remote management, reducing maintenance costs); and structural optimization (modular design improves installation efficiency and stability).

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the mounting groove of this utility model;

[0020] Figure 3 This is a partial cross-sectional view of the present invention;

[0021] Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of structure A in the middle.

[0022] Figure label:

[0023] 1. Base plate; 2. Current detector; 3. Locking buckle; 4. Controller; 5. Wiring port; 6. Body; 7. Linear motor; 8. Contact; 9. Deformable metal; 10. Mounting slot; 11. Limiting ring; 12. Screw one; 13. Insulating plate; 14. Mounting base; 15. Slot; 16. Screw two. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] Please see Figures 1-4 As shown, this embodiment is a six-column AC overvoltage protector with redundant protection function, including a base plate 1, a body 6, a mounting slot 10, a linear motor 7 and a deformable metal 9. The upper end of the base plate 1 is provided with six protector bodies 6 arranged in a square array. The upper end of the base plate 1 is provided with a mounting slot 10. The body 6 is installed inside the mounting slot 10. The linear motor 7 is provided between the mounting slots 10. The bottom of the mounting slot 10 is provided with deformable metal 9.

[0030] When using this device, fix the base in a suitable position, then connect the wiring port 5 to the circuit. The six bodies 6 are designed in parallel. When a short circuit occurs in one body 6, the deformable metal 9 will be heated and deformed upwards, breaking through the fastening force of screw 12 and lifting the body 6 to separate it from the contact 8. Then, the controller 4 starts the linear motor 7 at the corresponding point to drive the insulating plate 13 to insert into the slot 15. The insulating plate 13 is located between the contact 8 and the body 6. Even if the shape memory metal is pre-cooled and returns to its original position, it will be blocked by the insulating plate 13, waiting for the back-end personnel to come for maintenance. The other five bodies 6 can still protect the circuit voltage from overload. Overall, it achieves a redundant voltage protection effect, which is more significant and will not cause secondary damage, making it highly practical.

[0031] The base plate 1 has latches 3 on both sides and positioning holes at the four corners. The main body 6 has a wiring port 5 at the top. The latches 3 facilitate quick installation and disassembly for maintenance, while also enhancing the stability of the base plate 1 and the cabinet, preventing poor contact caused by vibration. The positioning holes at the four corners ensure that the protector is aligned with the holes in the power distribution cabinet during installation, improving assembly efficiency and avoiding insufficient electrical clearance caused by misalignment. The wiring port 5 is located at the top of the main body 6, facilitating centralized cable management, reducing internal wiring interference, and lowering maintenance complexity.

[0032] Example 2

[0033] Please see Figures 1-4 As shown, this embodiment further includes, based on embodiment 1, slots 15 on both sides of the mounting groove 10, and an insulating plate 13 fixed to the output end of the linear motor 7. The thickness of the insulating plate 13 is less than the thickness of the slot 15, ensuring that the insulating plate 13 is accurately aligned when inserted, avoiding jamming or offset, and improving the reliability of the isolation action. The insulating plate 13 is made of high-temperature resistant material (such as ceramic-filled epoxy resin), so that even if the faulty body 6 is ablated by high temperature, it can still effectively isolate the electric arc.

[0034] The bottom of the mounting slot 10 is provided with a mounting base 14. The deformable metal 9 is fixed to the upper end of the mounting base 14 by screws 16. The deformable metal 9 and the mounting base 14 can be pre-assembled, which facilitates mass production and quick replacement, and reduces maintenance costs. Anti-reverse threads or spring washers are used to ensure that the deformable metal 9 remains in a fixed position under long-term vibration environment to avoid malfunction. The mounting base 14 is made of a high thermal conductivity metal (such as aluminum alloy) to accelerate the transfer of heat from the body 6 to the deformable metal 9 and shorten the response time.

[0035] The main body 6 is fixed to the upper end of the mounting groove 10 by a limiting ring 11. The limiting ring 11 is fixed to the upper end of the mounting groove 10 by a screw 12. The screw 12 can position the main body 6, but it will be lifted by the deformed metal, causing the main body 6 to separate from the contact 8.

[0036] The bottom of the mounting slot 10 is provided with a contact 8, which is electrically connected to the bottom of the body 6. The contact 8 has a built-in spring structure to ensure a tight fit with the bottom of the body 6, so that no electric arc is generated even in a vibration environment. When the contact 8 is separated from the body 6, it quickly pulls an arc, and with the insertion of the insulating plate 13, the arc is doubly blocked from reigniting.

[0037] A controller 4 is fixed to the upper end of the linear motor 7, and a current detector 2 is fixed to the outer wall of one side of the base plate 1. The current detector 2 monitors the current of each body 6 in real time, provides early warning of abnormalities (such as increased leakage current), and records the fault location. It supports remote operation and maintenance. The controller 4 drives the motor according to the current or temperature signal to ensure that the insulation plate 13 acts within milliseconds, which is faster and more reliable than pure mechanical triggering. The current detector 2 is connected to a communication module (such as RS485) to upload the operating data to the monitoring platform, which helps predictive maintenance.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A six-column AC overvoltage protector with redundant protection function, comprising a base plate (1), a body (6), a mounting slot (10), a linear motor (7), and a deformable metal (9), characterized in that: The base plate (1) has six protector bodies (6) arranged in a square array at its upper end. The base plate (1) has a mounting groove (10) at its upper end. The body (6) is installed inside the mounting groove (10). A linear motor (7) is provided between the mounting grooves (10). Deformable metal (9) is provided at the bottom of the mounting groove (10).

2. The six-column AC overvoltage protector with redundant protection function according to claim 1, characterized in that: The base plate (1) is provided with latches (3) on both sides, and positioning holes are provided at the four corners of the base plate (1). The upper end of the body (6) is provided with a wiring port (5).

3. The six-column AC overvoltage protector with redundant protection function according to claim 1, characterized in that: The mounting groove (10) has slots (15) on both sides, and the output end of the linear motor (7) is fixed with an insulating plate (13). The thickness of the insulating plate (13) is less than the thickness of the slot (15).

4. The six-column AC overvoltage protector with redundant protection function according to claim 1, characterized in that: The mounting groove (10) is provided with a mounting base (14) at the bottom, and the deformable metal (9) is fixed to the upper end of the mounting base (14) by screw two (16).

5. The six-column AC overvoltage protector with redundant protection function according to claim 2, characterized in that: The main body (6) is fixed to the upper end of the mounting groove (10) by a limiting ring (11), and the limiting ring (11) is fixed to the upper end of the mounting groove (10) by a screw (12).

6. The six-column AC overvoltage protector with redundant protection function according to claim 1, characterized in that: The bottom of the mounting groove (10) is provided with a contact (8), which is electrically connected to the bottom of the body (6).

7. The six-column AC overvoltage protector with redundant protection function according to claim 1, characterized in that: A controller (4) is fixed to the upper end of the linear motor (7), and a current detector (2) is fixed to the outer wall of one side of the base plate (1).

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