Backup protector with step-by-step through-flow function

Abstract

The utility model discloses a backup protector with a step-by-step through-current function, which comprises a backup protector, a KG-1 end static contact of a backup switch of a left backup protection area is electrically connected with a wire inlet end of a surge protection device, a KG-2 end moving contact of the backup switch of the left backup protection area is electrically connected with a JX-1 end of a one-way gap, and a KG-2 end moving contact of the backup switch of the left backup protection area is electrically connected with a JX-1 end of the one-way gap. Two terminals of the one-way gap of the backup protector, the gas discharge tube and the electromagnetic coil are connected in parallel and are electrically connected with a connection point B of the backup protector; the B connection point of the backup protector is electrically connected with the output end of the surge protector. A backup switch voltage limiting protection effect is provided, the use safety protection performance is improved, and the phenomenon that a protected circuit or product is damaged is avoided.

Description

Technical Field

[0001] The utility model relates to a surge protector, in particular to a backup protector with a step-by-step increasing current flow function. Background Art

[0002] The backup protector is a device used for overcurrent protection at the front end of the surge protector. It is an external disconnect device for the surge protector used in low-voltage power supply systems. It can withstand the expected surge current at the installation location of the backup surge protector and can disconnect the power frequency overcurrent generated by the failure of the surge protector. It also has the characteristic of power frequency low current operation.

[0003] In power systems, overcurrent or surges can occur due to various reasons (such as lightning strikes, equipment failures, and circuit overloads). These can cause serious damage to equipment or the entire power system, or even lead to safety incidents such as fires. Therefore, a device is needed to provide additional protection when surge protectors fail or are unable to respond in a timely manner.

[0004] It is in this context that backup protectors are widely used. They are typically installed in front of a surge protector, working in conjunction with it to provide multi-layered protection. If the surge protector malfunctions for some reason, the backup protector can quickly respond and disconnect the circuit, preventing equipment damage or fires.

[0005] In terms of technological development, backup protectors are constantly innovating and improving to enhance their response speed, accuracy, and reliability. For example, some advanced backup protectors feature intelligent identification and remote control capabilities, enabling real-time monitoring of circuit status and enabling operation and adjustments via remote control systems. The application of these technologies has significantly improved the safety and reliability of power systems.

[0006] In summary, the background technology of backup protectors mainly involves safety and reliability issues in power systems, as well as the continuous technological innovations and improvements to address these issues.

[0007] Patent No. ZL202220940751.1, with an announcement date of October 21, 2022, discloses a surge protector for lightning protection engineering, comprising a slide rail body, the surface of which is longitudinally slidably connected to the surge protector body, the interior of which is laterally slidably connected to a moving rod via a limit groove and a limit rod, the top and bottom of the moving rod are both provided with a movable groove, and the interior of the movable groove is movably connected to a connecting rod via a pin. The utility model solves the problem that the stability of the existing surge protector needs to be improved by providing a slide rail body, a surge protector body, a moving rod, a movable groove, a connecting rod, an insert, a round block, a support plate, a spring, a clamping groove, a fixing plate, an outlet and a push rod. When the surge protector is in use, it is generally slidably limited on the surface of the slide rail for fixed use. The slide rail can only limit the surge protector and cannot effectively ensure that the surge protector is stably placed on the surface of the slide rail, thereby reducing the stability of the surge protector. This solution also has the problem of not having a step-by-step flow-through function, which may cause damage to the protected circuits or products due to lack of protection during the safety protection process. Utility Model Content

[0008] The utility model aims to solve the problem that the existing backup protector has only a single through-current protection but no step-by-step increasing through-current function, which easily leads to damage to the protected circuit or product due to lack of protection during the safety protection process. The utility model provides a surge protector with a step-by-step increasing through-current function, which can reduce the protection blind area, improve the safety protection of use to a greater extent, and more effectively avoid damage to the protected circuit or product.

[0009] The specific technical solution adopted by the utility model to solve the above technical problems is: a surge protector with backup protection, including a backup protector, characterized in that: the static contact of the KG-1 end of the backup switch of the backup protector is electrically connected to the incoming line end of the surge protector, the moving contact of the KG-2 end of the backup switch of the backup protector is electrically connected to the JX-1 end of the one-way gap, the JX-1 terminal of the one-way gap of the backup protector, the FDG-1 terminal of the gas discharge tube and the DCX-1 terminal of the electromagnetic coil are electrically connected in parallel and electrically connected to the A connection point of the left backup area; the JX-2 terminal of the one-way gap of the backup protector, the FDG-2 terminal of the gas discharge tube and the DCX-2 terminal of the electromagnetic coil are electrically connected in parallel and electrically connected to the B connection point of the backup protector; the B connection point of the backup protector is electrically connected to the output end of the surge protector. Through the above-mentioned combined protection of the left backup protector, the surge protector provides more comprehensive protection, reduces the protection blind area, improves the safety protection of use to a greater extent, and more effectively avoids damage to the protected lines or products.

[0010] Preferably, the three components of the electromagnetic coil DCX, the gas discharge tube FDG and the unidirectional gap JX together constitute a step-by-step increasing current backup protector.

[0011] Preferably, the backup protector is provided with an arc extinguishing hood, which is arranged in the enclosed space area formed by the B connection point, the electromagnetic coil, the gas discharge tube and the KG-2 end moving contact.

[0012] Preferably, the B connection point is located at an outer area of ​​the electromagnetic coil and the gas discharge tube.

[0013] Preferably, the backup switch is arranged at the operating end face of the backup protector, and the static contact at the KG-1 end and the moving contact at the KG-2 end of the backup switch are arranged in the area where the inner side of the incoming line end of the backup protector and the outer side of the electromagnetic coil are located; the incoming line end of the backup protector and the grounding end of the backup protector are respectively arranged at two farthest positions on the backup protector facing away from each other.

[0014] The beneficial effects of the utility model are: it can provide a step-by-step increasing current flow function for the surge protector, reduce the protection blind area, improve the safety protection of use to a greater extent, and more effectively avoid damage to the protected lines or products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0016] Figure 1 The utility model is a schematic diagram of the electrical principle structure of a surge protector with backup protection.

[0017] Figure 2 It is a structural schematic diagram of the left backup protection zone in the surge protector with backup protection of the utility model.

[0018] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of the surge protector with backup protection. DETAILED DESCRIPTION

[0019] Figure 1 、 Figure 2 、 Figure 3In the illustrated embodiment 1, a surge protector with backup protection includes a backup protector 10, wherein the static contact at the KG-1 end of the backup switch KG of the backup protector 10 is electrically connected to the incoming line terminal 11 of the surge protector, and the moving contact at the KG-2 end of the backup switch of the backup protector 10 is electrically connected to the JX-1 end of the unidirectional gap JX; the JX-1 terminal of the unidirectional gap JX of the backup protector 10, the FDG-1 terminal of the gas discharge tube FDG, and the DCX-1 terminal of the electromagnetic coil DCX are electrically connected in parallel and electrically connected to the A connection point of the backup protector 10; the JX-2 terminal of the unidirectional gap JX of the backup protector 10, the FDG-2 terminal of the gas discharge tube FDG, and the DCX-2 terminal of the electromagnetic coil DCX are electrically connected in parallel and electrically connected to the B connection point of the backup protector 10; and the B connection point of the backup protector 10 is electrically connected to the output end of the backup protector 10.

[0020] The electromagnetic coil DCX, gas discharge tube FDG, and unidirectional gap JX together constitute a step-by-step current backup protector. The backup protector 10 is mounted and connected with a B connection point. The backup protector 10 is also mounted and connected with an arc extinguishing hood 14, which is mounted and connected in the space formed by the B connection point, the electromagnetic coil DCX, the gas discharge tube FDG, and the KG-2 moving contact. The B connection point is mounted and connected outside the electromagnetic coil DCX and the gas discharge tube FDG. The backup switch KG is mounted and connected at the operating end of the backup protector 10. The KG-1 static contact and KG-2 moving contact of the backup switch KG are located inside the backup protector's incoming line terminal 11 and outside the electromagnetic coil DCX. The backup protector's incoming line terminal 11 and the backup protector's output terminal 12 are located at the two most distant locations on the backup protector 10, facing away from each other.

[0021] When in use, the backup protector connection method is:

[0022] First, introduce the KG-1 static contact through the incoming line end, then connect the moving contact from the KG-2 end to point A, and connect the two ends of the three components DCX, FDG, and JX to points A and B in parallel, and then connect point B to the output end.

[0023] Working principle of backup protector:

[0024] The KG-1 static contact is first introduced through the incoming line end, the KG backup switch is closed, and then the moving contact from the KG-2 end is connected to point A. In order to improve the stability of the backup protector, the present invention adopts a step-by-step increasing current design composed of three components: DCX, FDG, and JX. In the absence of a lightning surge, the Un voltage passes from DCX to point B. When the lightning surge energy reaches a certain level, the FDG is first instantaneously started and turned on to point B. As the lightning surge increases again, the JX component is started and turned on to point B, and then connected from point B to the output end.

[0025] In the description of positional relationships in the present invention, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0026] The above content and structure describe the basic principles, main features, and advantages of the present invention, which should be understood by those skilled in the art. The above examples and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements are intended to be within the scope of the invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A backup protector with a step-by-step increasing flow function, characterized in that: The static contact at the KG-1 end of the backup switch of the backup protector is electrically connected to the incoming line end of the surge protector, the moving contact at the KG-2 end of the backup switch of the backup protector is electrically connected to the JX-1 end of the one-way gap, the JX-1 terminal of the one-way gap of the backup protector, the FDG-1 terminal of the gas discharge tube and the DCX-1 terminal of the electromagnetic coil are electrically connected in parallel and electrically connected to the A connection point of the left backup area; the JX-2 terminal of the one-way gap of the backup protector, the FDG-2 terminal of the gas discharge tube and the DCX-2 terminal of the electromagnetic coil are electrically connected in parallel and electrically connected to the B connection point of the backup protector; the B connection point of the backup protector is electrically connected to the output end of the surge protector.

2. The backup protector with step-by-step increasing flow function according to claim 1, characterized in that: The three components of the electromagnetic coil DCX, the gas discharge tube FDG and the unidirectional gap JX together constitute a step-by-step increasing through-current backup protector.

3. The backup protector with step-by-step increasing flow function according to claim 1, characterized in that: The backup protector is provided with an arc extinguishing cover, which is arranged in the enclosed space area formed by the B connection point, the electromagnetic coil, the gas discharge tube and the KG-2 end moving contact.

4. The backup protector with step-by-step increasing flow function according to claim 1 or 3, characterized in that: The B connection point is located at the outer area of ​​the electromagnetic coil and the gas discharge tube.

5. The backup protector with step-by-step increasing flow function according to claim 1, characterized in that: The backup switch is arranged at the operating end surface of the backup protector, and the KG-1 end static contact and KG-2 end moving contact of the backup switch are arranged in the area where the inner side of the backup protector is close to the incoming line end and the outer side of the electromagnetic coil is located; the backup protector is close to the incoming line end and the backup protector is close to the ground end and are respectively arranged at two farthest positions on the backup protector facing away from each other.

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